vendor: Update vendoring for the exec client and server implementations

Signed-off-by: Jacek J. Łakis <jacek.lakis@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

vendor/github.com/Azure/go-ansiterm/LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2015 Microsoft Corporation
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

vendor/github.com/Azure/go-ansiterm/README.md

@@ -0,0 +1,12 @@
+# go-ansiterm
+
+This is a cross platform Ansi Terminal Emulation library.  It reads a stream of Ansi characters and produces the appropriate function calls.  The results of the function calls are platform dependent.
+
+For example the parser might receive "ESC, [, A" as a stream of three characters.  This is the code for Cursor Up (http://www.vt100.net/docs/vt510-rm/CUU).  The parser then calls the cursor up function (CUU()) on an event handler.  The event handler determines what platform specific work must be done to cause the cursor to move up one position.
+
+The parser (parser.go) is a partial implementation of this state machine (http://vt100.net/emu/vt500_parser.png).  There are also two event handler implementations, one for tests (test_event_handler.go) to validate that the expected events are being produced and called, the other is a Windows implementation (winterm/win_event_handler.go).
+
+See parser_test.go for examples exercising the state machine and generating appropriate function calls.
+
+-----
+This project has adopted the [Microsoft Open Source Code of Conduct](https://opensource.microsoft.com/codeofconduct/). For more information see the [Code of Conduct FAQ](https://opensource.microsoft.com/codeofconduct/faq/) or contact [opencode@microsoft.com](mailto:opencode@microsoft.com) with any additional questions or comments.

vendor/github.com/Azure/go-ansiterm/constants.go

@@ -0,0 +1,188 @@
+package ansiterm
+
+const LogEnv = "DEBUG_TERMINAL"
+
+// ANSI constants
+// References:
+// -- http://www.ecma-international.org/publications/standards/Ecma-048.htm
+// -- http://man7.org/linux/man-pages/man4/console_codes.4.html
+// -- http://manpages.ubuntu.com/manpages/intrepid/man4/console_codes.4.html
+// -- http://en.wikipedia.org/wiki/ANSI_escape_code
+// -- http://vt100.net/emu/dec_ansi_parser
+// -- http://vt100.net/emu/vt500_parser.svg
+// -- http://invisible-island.net/xterm/ctlseqs/ctlseqs.html
+// -- http://www.inwap.com/pdp10/ansicode.txt
+const (
+	// ECMA-48 Set Graphics Rendition
+	// Note:
+	// -- Constants leading with an underscore (e.g., _ANSI_xxx) are unsupported or reserved
+	// -- Fonts could possibly be supported via SetCurrentConsoleFontEx
+	// -- Windows does not expose the per-window cursor (i.e., caret) blink times
+	ANSI_SGR_RESET              = 0
+	ANSI_SGR_BOLD               = 1
+	ANSI_SGR_DIM                = 2
+	_ANSI_SGR_ITALIC            = 3
+	ANSI_SGR_UNDERLINE          = 4
+	_ANSI_SGR_BLINKSLOW         = 5
+	_ANSI_SGR_BLINKFAST         = 6
+	ANSI_SGR_REVERSE            = 7
+	_ANSI_SGR_INVISIBLE         = 8
+	_ANSI_SGR_LINETHROUGH       = 9
+	_ANSI_SGR_FONT_00           = 10
+	_ANSI_SGR_FONT_01           = 11
+	_ANSI_SGR_FONT_02           = 12
+	_ANSI_SGR_FONT_03           = 13
+	_ANSI_SGR_FONT_04           = 14
+	_ANSI_SGR_FONT_05           = 15
+	_ANSI_SGR_FONT_06           = 16
+	_ANSI_SGR_FONT_07           = 17
+	_ANSI_SGR_FONT_08           = 18
+	_ANSI_SGR_FONT_09           = 19
+	_ANSI_SGR_FONT_10           = 20
+	_ANSI_SGR_DOUBLEUNDERLINE   = 21
+	ANSI_SGR_BOLD_DIM_OFF       = 22
+	_ANSI_SGR_ITALIC_OFF        = 23
+	ANSI_SGR_UNDERLINE_OFF      = 24
+	_ANSI_SGR_BLINK_OFF         = 25
+	_ANSI_SGR_RESERVED_00       = 26
+	ANSI_SGR_REVERSE_OFF        = 27
+	_ANSI_SGR_INVISIBLE_OFF     = 28
+	_ANSI_SGR_LINETHROUGH_OFF   = 29
+	ANSI_SGR_FOREGROUND_BLACK   = 30
+	ANSI_SGR_FOREGROUND_RED     = 31
+	ANSI_SGR_FOREGROUND_GREEN   = 32
+	ANSI_SGR_FOREGROUND_YELLOW  = 33
+	ANSI_SGR_FOREGROUND_BLUE    = 34
+	ANSI_SGR_FOREGROUND_MAGENTA = 35
+	ANSI_SGR_FOREGROUND_CYAN    = 36
+	ANSI_SGR_FOREGROUND_WHITE   = 37
+	_ANSI_SGR_RESERVED_01       = 38
+	ANSI_SGR_FOREGROUND_DEFAULT = 39
+	ANSI_SGR_BACKGROUND_BLACK   = 40
+	ANSI_SGR_BACKGROUND_RED     = 41
+	ANSI_SGR_BACKGROUND_GREEN   = 42
+	ANSI_SGR_BACKGROUND_YELLOW  = 43
+	ANSI_SGR_BACKGROUND_BLUE    = 44
+	ANSI_SGR_BACKGROUND_MAGENTA = 45
+	ANSI_SGR_BACKGROUND_CYAN    = 46
+	ANSI_SGR_BACKGROUND_WHITE   = 47
+	_ANSI_SGR_RESERVED_02       = 48
+	ANSI_SGR_BACKGROUND_DEFAULT = 49
+	// 50 - 65: Unsupported
+
+	ANSI_MAX_CMD_LENGTH = 4096
+
+	MAX_INPUT_EVENTS = 128
+	DEFAULT_WIDTH    = 80
+	DEFAULT_HEIGHT   = 24
+
+	ANSI_BEL              = 0x07
+	ANSI_BACKSPACE        = 0x08
+	ANSI_TAB              = 0x09
+	ANSI_LINE_FEED        = 0x0A
+	ANSI_VERTICAL_TAB     = 0x0B
+	ANSI_FORM_FEED        = 0x0C
+	ANSI_CARRIAGE_RETURN  = 0x0D
+	ANSI_ESCAPE_PRIMARY   = 0x1B
+	ANSI_ESCAPE_SECONDARY = 0x5B
+	ANSI_OSC_STRING_ENTRY = 0x5D
+	ANSI_COMMAND_FIRST    = 0x40
+	ANSI_COMMAND_LAST     = 0x7E
+	DCS_ENTRY             = 0x90
+	CSI_ENTRY             = 0x9B
+	OSC_STRING            = 0x9D
+	ANSI_PARAMETER_SEP    = ";"
+	ANSI_CMD_G0           = '('
+	ANSI_CMD_G1           = ')'
+	ANSI_CMD_G2           = '*'
+	ANSI_CMD_G3           = '+'
+	ANSI_CMD_DECPNM       = '>'
+	ANSI_CMD_DECPAM       = '='
+	ANSI_CMD_OSC          = ']'
+	ANSI_CMD_STR_TERM     = '\\'
+
+	KEY_CONTROL_PARAM_2 = ";2"
+	KEY_CONTROL_PARAM_3 = ";3"
+	KEY_CONTROL_PARAM_4 = ";4"
+	KEY_CONTROL_PARAM_5 = ";5"
+	KEY_CONTROL_PARAM_6 = ";6"
+	KEY_CONTROL_PARAM_7 = ";7"
+	KEY_CONTROL_PARAM_8 = ";8"
+	KEY_ESC_CSI         = "\x1B["
+	KEY_ESC_N           = "\x1BN"
+	KEY_ESC_O           = "\x1BO"
+
+	FILL_CHARACTER = ' '
+)
+
+func getByteRange(start byte, end byte) []byte {
+	bytes := make([]byte, 0, 32)
+	for i := start; i <= end; i++ {
+		bytes = append(bytes, byte(i))
+	}
+
+	return bytes
+}
+
+var toGroundBytes = getToGroundBytes()
+var executors = getExecuteBytes()
+
+// SPACE		  20+A0 hex  Always and everywhere a blank space
+// Intermediate	  20-2F hex   !"#$%&'()*+,-./
+var intermeds = getByteRange(0x20, 0x2F)
+
+// Parameters	  30-3F hex  0123456789:;<=>?
+// CSI Parameters 30-39, 3B hex 0123456789;
+var csiParams = getByteRange(0x30, 0x3F)
+
+var csiCollectables = append(getByteRange(0x30, 0x39), getByteRange(0x3B, 0x3F)...)
+
+// Uppercase	  40-5F hex  @ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_
+var upperCase = getByteRange(0x40, 0x5F)
+
+// Lowercase	  60-7E hex  `abcdefghijlkmnopqrstuvwxyz{|}~
+var lowerCase = getByteRange(0x60, 0x7E)
+
+// Alphabetics	  40-7E hex  (all of upper and lower case)
+var alphabetics = append(upperCase, lowerCase...)
+
+var printables = getByteRange(0x20, 0x7F)
+
+var escapeIntermediateToGroundBytes = getByteRange(0x30, 0x7E)
+var escapeToGroundBytes = getEscapeToGroundBytes()
+
+// See http://www.vt100.net/emu/vt500_parser.png for description of the complex
+// byte ranges below
+
+func getEscapeToGroundBytes() []byte {
+	escapeToGroundBytes := getByteRange(0x30, 0x4F)
+	escapeToGroundBytes = append(escapeToGroundBytes, getByteRange(0x51, 0x57)...)
+	escapeToGroundBytes = append(escapeToGroundBytes, 0x59)
+	escapeToGroundBytes = append(escapeToGroundBytes, 0x5A)
+	escapeToGroundBytes = append(escapeToGroundBytes, 0x5C)
+	escapeToGroundBytes = append(escapeToGroundBytes, getByteRange(0x60, 0x7E)...)
+	return escapeToGroundBytes
+}
+
+func getExecuteBytes() []byte {
+	executeBytes := getByteRange(0x00, 0x17)
+	executeBytes = append(executeBytes, 0x19)
+	executeBytes = append(executeBytes, getByteRange(0x1C, 0x1F)...)
+	return executeBytes
+}
+
+func getToGroundBytes() []byte {
+	groundBytes := []byte{0x18}
+	groundBytes = append(groundBytes, 0x1A)
+	groundBytes = append(groundBytes, getByteRange(0x80, 0x8F)...)
+	groundBytes = append(groundBytes, getByteRange(0x91, 0x97)...)
+	groundBytes = append(groundBytes, 0x99)
+	groundBytes = append(groundBytes, 0x9A)
+	groundBytes = append(groundBytes, 0x9C)
+	return groundBytes
+}
+
+// Delete		     7F hex  Always and everywhere ignored
+// C1 Control	  80-9F hex  32 additional control characters
+// G1 Displayable A1-FE hex  94 additional displayable characters
+// Special		  A0+FF hex  Same as SPACE and DELETE

vendor/github.com/Azure/go-ansiterm/context.go

@@ -0,0 +1,7 @@
+package ansiterm
+
+type ansiContext struct {
+	currentChar byte
+	paramBuffer []byte
+	interBuffer []byte
+}

vendor/github.com/Azure/go-ansiterm/csi_entry_state.go

@@ -0,0 +1,49 @@
+package ansiterm
+
+type csiEntryState struct {
+	baseState
+}
+
+func (csiState csiEntryState) Handle(b byte) (s state, e error) {
+	logger.Infof("CsiEntry::Handle %#x", b)
+
+	nextState, err := csiState.baseState.Handle(b)
+	if nextState != nil || err != nil {
+		return nextState, err
+	}
+
+	switch {
+	case sliceContains(alphabetics, b):
+		return csiState.parser.ground, nil
+	case sliceContains(csiCollectables, b):
+		return csiState.parser.csiParam, nil
+	case sliceContains(executors, b):
+		return csiState, csiState.parser.execute()
+	}
+
+	return csiState, nil
+}
+
+func (csiState csiEntryState) Transition(s state) error {
+	logger.Infof("CsiEntry::Transition %s --> %s", csiState.Name(), s.Name())
+	csiState.baseState.Transition(s)
+
+	switch s {
+	case csiState.parser.ground:
+		return csiState.parser.csiDispatch()
+	case csiState.parser.csiParam:
+		switch {
+		case sliceContains(csiParams, csiState.parser.context.currentChar):
+			csiState.parser.collectParam()
+		case sliceContains(intermeds, csiState.parser.context.currentChar):
+			csiState.parser.collectInter()
+		}
+	}
+
+	return nil
+}
+
+func (csiState csiEntryState) Enter() error {
+	csiState.parser.clear()
+	return nil
+}

vendor/github.com/Azure/go-ansiterm/csi_param_state.go

@@ -0,0 +1,38 @@
+package ansiterm
+
+type csiParamState struct {
+	baseState
+}
+
+func (csiState csiParamState) Handle(b byte) (s state, e error) {
+	logger.Infof("CsiParam::Handle %#x", b)
+
+	nextState, err := csiState.baseState.Handle(b)
+	if nextState != nil || err != nil {
+		return nextState, err
+	}
+
+	switch {
+	case sliceContains(alphabetics, b):
+		return csiState.parser.ground, nil
+	case sliceContains(csiCollectables, b):
+		csiState.parser.collectParam()
+		return csiState, nil
+	case sliceContains(executors, b):
+		return csiState, csiState.parser.execute()
+	}
+
+	return csiState, nil
+}
+
+func (csiState csiParamState) Transition(s state) error {
+	logger.Infof("CsiParam::Transition %s --> %s", csiState.Name(), s.Name())
+	csiState.baseState.Transition(s)
+
+	switch s {
+	case csiState.parser.ground:
+		return csiState.parser.csiDispatch()
+	}
+
+	return nil
+}

vendor/github.com/Azure/go-ansiterm/escape_intermediate_state.go

@@ -0,0 +1,36 @@
+package ansiterm
+
+type escapeIntermediateState struct {
+	baseState
+}
+
+func (escState escapeIntermediateState) Handle(b byte) (s state, e error) {
+	logger.Infof("escapeIntermediateState::Handle %#x", b)
+	nextState, err := escState.baseState.Handle(b)
+	if nextState != nil || err != nil {
+		return nextState, err
+	}
+
+	switch {
+	case sliceContains(intermeds, b):
+		return escState, escState.parser.collectInter()
+	case sliceContains(executors, b):
+		return escState, escState.parser.execute()
+	case sliceContains(escapeIntermediateToGroundBytes, b):
+		return escState.parser.ground, nil
+	}
+
+	return escState, nil
+}
+
+func (escState escapeIntermediateState) Transition(s state) error {
+	logger.Infof("escapeIntermediateState::Transition %s --> %s", escState.Name(), s.Name())
+	escState.baseState.Transition(s)
+
+	switch s {
+	case escState.parser.ground:
+		return escState.parser.escDispatch()
+	}
+
+	return nil
+}

vendor/github.com/Azure/go-ansiterm/escape_state.go

@@ -0,0 +1,47 @@
+package ansiterm
+
+type escapeState struct {
+	baseState
+}
+
+func (escState escapeState) Handle(b byte) (s state, e error) {
+	logger.Infof("escapeState::Handle %#x", b)
+	nextState, err := escState.baseState.Handle(b)
+	if nextState != nil || err != nil {
+		return nextState, err
+	}
+
+	switch {
+	case b == ANSI_ESCAPE_SECONDARY:
+		return escState.parser.csiEntry, nil
+	case b == ANSI_OSC_STRING_ENTRY:
+		return escState.parser.oscString, nil
+	case sliceContains(executors, b):
+		return escState, escState.parser.execute()
+	case sliceContains(escapeToGroundBytes, b):
+		return escState.parser.ground, nil
+	case sliceContains(intermeds, b):
+		return escState.parser.escapeIntermediate, nil
+	}
+
+	return escState, nil
+}
+
+func (escState escapeState) Transition(s state) error {
+	logger.Infof("Escape::Transition %s --> %s", escState.Name(), s.Name())
+	escState.baseState.Transition(s)
+
+	switch s {
+	case escState.parser.ground:
+		return escState.parser.escDispatch()
+	case escState.parser.escapeIntermediate:
+		return escState.parser.collectInter()
+	}
+
+	return nil
+}
+
+func (escState escapeState) Enter() error {
+	escState.parser.clear()
+	return nil
+}

vendor/github.com/Azure/go-ansiterm/event_handler.go

@@ -0,0 +1,90 @@
+package ansiterm
+
+type AnsiEventHandler interface {
+	// Print
+	Print(b byte) error
+
+	// Execute C0 commands
+	Execute(b byte) error
+
+	// CUrsor Up
+	CUU(int) error
+
+	// CUrsor Down
+	CUD(int) error
+
+	// CUrsor Forward
+	CUF(int) error
+
+	// CUrsor Backward
+	CUB(int) error
+
+	// Cursor to Next Line
+	CNL(int) error
+
+	// Cursor to Previous Line
+	CPL(int) error
+
+	// Cursor Horizontal position Absolute
+	CHA(int) error
+
+	// Vertical line Position Absolute
+	VPA(int) error
+
+	// CUrsor Position
+	CUP(int, int) error
+
+	// Horizontal and Vertical Position (depends on PUM)
+	HVP(int, int) error
+
+	// Text Cursor Enable Mode
+	DECTCEM(bool) error
+
+	// Origin Mode
+	DECOM(bool) error
+
+	// 132 Column Mode
+	DECCOLM(bool) error
+
+	// Erase in Display
+	ED(int) error
+
+	// Erase in Line
+	EL(int) error
+
+	// Insert Line
+	IL(int) error
+
+	// Delete Line
+	DL(int) error
+
+	// Insert Character
+	ICH(int) error
+
+	// Delete Character
+	DCH(int) error
+
+	// Set Graphics Rendition
+	SGR([]int) error
+
+	// Pan Down
+	SU(int) error
+
+	// Pan Up
+	SD(int) error
+
+	// Device Attributes
+	DA([]string) error
+
+	// Set Top and Bottom Margins
+	DECSTBM(int, int) error
+
+	// Index
+	IND() error
+
+	// Reverse Index
+	RI() error
+
+	// Flush updates from previous commands
+	Flush() error
+}

vendor/github.com/Azure/go-ansiterm/ground_state.go

@@ -0,0 +1,24 @@
+package ansiterm
+
+type groundState struct {
+	baseState
+}
+
+func (gs groundState) Handle(b byte) (s state, e error) {
+	gs.parser.context.currentChar = b
+
+	nextState, err := gs.baseState.Handle(b)
+	if nextState != nil || err != nil {
+		return nextState, err
+	}
+
+	switch {
+	case sliceContains(printables, b):
+		return gs, gs.parser.print()
+
+	case sliceContains(executors, b):
+		return gs, gs.parser.execute()
+	}
+
+	return gs, nil
+}

vendor/github.com/Azure/go-ansiterm/osc_string_state.go

@@ -0,0 +1,31 @@
+package ansiterm
+
+type oscStringState struct {
+	baseState
+}
+
+func (oscState oscStringState) Handle(b byte) (s state, e error) {
+	logger.Infof("OscString::Handle %#x", b)
+	nextState, err := oscState.baseState.Handle(b)
+	if nextState != nil || err != nil {
+		return nextState, err
+	}
+
+	switch {
+	case isOscStringTerminator(b):
+		return oscState.parser.ground, nil
+	}
+
+	return oscState, nil
+}
+
+// See below for OSC string terminators for linux
+// http://man7.org/linux/man-pages/man4/console_codes.4.html
+func isOscStringTerminator(b byte) bool {
+
+	if b == ANSI_BEL || b == 0x5C {
+		return true
+	}
+
+	return false
+}

vendor/github.com/Azure/go-ansiterm/parser.go

@@ -0,0 +1,136 @@
+package ansiterm
+
+import (
+	"errors"
+	"io/ioutil"
+	"os"
+
+	"github.com/Sirupsen/logrus"
+)
+
+var logger *logrus.Logger
+
+type AnsiParser struct {
+	currState          state
+	eventHandler       AnsiEventHandler
+	context            *ansiContext
+	csiEntry           state
+	csiParam           state
+	dcsEntry           state
+	escape             state
+	escapeIntermediate state
+	error              state
+	ground             state
+	oscString          state
+	stateMap           []state
+}
+
+func CreateParser(initialState string, evtHandler AnsiEventHandler) *AnsiParser {
+	logFile := ioutil.Discard
+
+	if isDebugEnv := os.Getenv(LogEnv); isDebugEnv == "1" {
+		logFile, _ = os.Create("ansiParser.log")
+	}
+
+	logger = &logrus.Logger{
+		Out:       logFile,
+		Formatter: new(logrus.TextFormatter),
+		Level:     logrus.InfoLevel,
+	}
+
+	parser := &AnsiParser{
+		eventHandler: evtHandler,
+		context:      &ansiContext{},
+	}
+
+	parser.csiEntry = csiEntryState{baseState{name: "CsiEntry", parser: parser}}
+	parser.csiParam = csiParamState{baseState{name: "CsiParam", parser: parser}}
+	parser.dcsEntry = dcsEntryState{baseState{name: "DcsEntry", parser: parser}}
+	parser.escape = escapeState{baseState{name: "Escape", parser: parser}}
+	parser.escapeIntermediate = escapeIntermediateState{baseState{name: "EscapeIntermediate", parser: parser}}
+	parser.error = errorState{baseState{name: "Error", parser: parser}}
+	parser.ground = groundState{baseState{name: "Ground", parser: parser}}
+	parser.oscString = oscStringState{baseState{name: "OscString", parser: parser}}
+
+	parser.stateMap = []state{
+		parser.csiEntry,
+		parser.csiParam,
+		parser.dcsEntry,
+		parser.escape,
+		parser.escapeIntermediate,
+		parser.error,
+		parser.ground,
+		parser.oscString,
+	}
+
+	parser.currState = getState(initialState, parser.stateMap)
+
+	logger.Infof("CreateParser: parser %p", parser)
+	return parser
+}
+
+func getState(name string, states []state) state {
+	for _, el := range states {
+		if el.Name() == name {
+			return el
+		}
+	}
+
+	return nil
+}
+
+func (ap *AnsiParser) Parse(bytes []byte) (int, error) {
+	for i, b := range bytes {
+		if err := ap.handle(b); err != nil {
+			return i, err
+		}
+	}
+
+	return len(bytes), ap.eventHandler.Flush()
+}
+
+func (ap *AnsiParser) handle(b byte) error {
+	ap.context.currentChar = b
+	newState, err := ap.currState.Handle(b)
+	if err != nil {
+		return err
+	}
+
+	if newState == nil {
+		logger.Warning("newState is nil")
+		return errors.New("New state of 'nil' is invalid.")
+	}
+
+	if newState != ap.currState {
+		if err := ap.changeState(newState); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (ap *AnsiParser) changeState(newState state) error {
+	logger.Infof("ChangeState %s --> %s", ap.currState.Name(), newState.Name())
+
+	// Exit old state
+	if err := ap.currState.Exit(); err != nil {
+		logger.Infof("Exit state '%s' failed with : '%v'", ap.currState.Name(), err)
+		return err
+	}
+
+	// Perform transition action
+	if err := ap.currState.Transition(newState); err != nil {
+		logger.Infof("Transition from '%s' to '%s' failed with: '%v'", ap.currState.Name(), newState.Name, err)
+		return err
+	}
+
+	// Enter new state
+	if err := newState.Enter(); err != nil {
+		logger.Infof("Enter state '%s' failed with: '%v'", newState.Name(), err)
+		return err
+	}
+
+	ap.currState = newState
+	return nil
+}

vendor/github.com/Azure/go-ansiterm/parser_action_helpers.go

@@ -0,0 +1,103 @@
+package ansiterm
+
+import (
+	"strconv"
+)
+
+func parseParams(bytes []byte) ([]string, error) {
+	paramBuff := make([]byte, 0, 0)
+	params := []string{}
+
+	for _, v := range bytes {
+		if v == ';' {
+			if len(paramBuff) > 0 {
+				// Completed parameter, append it to the list
+				s := string(paramBuff)
+				params = append(params, s)
+				paramBuff = make([]byte, 0, 0)
+			}
+		} else {
+			paramBuff = append(paramBuff, v)
+		}
+	}
+
+	// Last parameter may not be terminated with ';'
+	if len(paramBuff) > 0 {
+		s := string(paramBuff)
+		params = append(params, s)
+	}
+
+	logger.Infof("Parsed params: %v with length: %d", params, len(params))
+	return params, nil
+}
+
+func parseCmd(context ansiContext) (string, error) {
+	return string(context.currentChar), nil
+}
+
+func getInt(params []string, dflt int) int {
+	i := getInts(params, 1, dflt)[0]
+	logger.Infof("getInt: %v", i)
+	return i
+}
+
+func getInts(params []string, minCount int, dflt int) []int {
+	ints := []int{}
+
+	for _, v := range params {
+		i, _ := strconv.Atoi(v)
+		// Zero is mapped to the default value in VT100.
+		if i == 0 {
+			i = dflt
+		}
+		ints = append(ints, i)
+	}
+
+	if len(ints) < minCount {
+		remaining := minCount - len(ints)
+		for i := 0; i < remaining; i++ {
+			ints = append(ints, dflt)
+		}
+	}
+
+	logger.Infof("getInts: %v", ints)
+
+	return ints
+}
+
+func (ap *AnsiParser) modeDispatch(param string, set bool) error {
+	switch param {
+	case "?3":
+		return ap.eventHandler.DECCOLM(set)
+	case "?6":
+		return ap.eventHandler.DECOM(set)
+	case "?25":
+		return ap.eventHandler.DECTCEM(set)
+	}
+	return nil
+}
+
+func (ap *AnsiParser) hDispatch(params []string) error {
+	if len(params) == 1 {
+		return ap.modeDispatch(params[0], true)
+	}
+
+	return nil
+}
+
+func (ap *AnsiParser) lDispatch(params []string) error {
+	if len(params) == 1 {
+		return ap.modeDispatch(params[0], false)
+	}
+
+	return nil
+}
+
+func getEraseParam(params []string) int {
+	param := getInt(params, 0)
+	if param < 0 || 3 < param {
+		param = 0
+	}
+
+	return param
+}

vendor/github.com/Azure/go-ansiterm/parser_actions.go

@@ -0,0 +1,122 @@
+package ansiterm
+
+import (
+	"fmt"
+)
+
+func (ap *AnsiParser) collectParam() error {
+	currChar := ap.context.currentChar
+	logger.Infof("collectParam %#x", currChar)
+	ap.context.paramBuffer = append(ap.context.paramBuffer, currChar)
+	return nil
+}
+
+func (ap *AnsiParser) collectInter() error {
+	currChar := ap.context.currentChar
+	logger.Infof("collectInter %#x", currChar)
+	ap.context.paramBuffer = append(ap.context.interBuffer, currChar)
+	return nil
+}
+
+func (ap *AnsiParser) escDispatch() error {
+	cmd, _ := parseCmd(*ap.context)
+	intermeds := ap.context.interBuffer
+	logger.Infof("escDispatch currentChar: %#x", ap.context.currentChar)
+	logger.Infof("escDispatch: %v(%v)", cmd, intermeds)
+
+	switch cmd {
+	case "D": // IND
+		return ap.eventHandler.IND()
+	case "E": // NEL, equivalent to CRLF
+		err := ap.eventHandler.Execute(ANSI_CARRIAGE_RETURN)
+		if err == nil {
+			err = ap.eventHandler.Execute(ANSI_LINE_FEED)
+		}
+		return err
+	case "M": // RI
+		return ap.eventHandler.RI()
+	}
+
+	return nil
+}
+
+func (ap *AnsiParser) csiDispatch() error {
+	cmd, _ := parseCmd(*ap.context)
+	params, _ := parseParams(ap.context.paramBuffer)
+
+	logger.Infof("csiDispatch: %v(%v)", cmd, params)
+
+	switch cmd {
+	case "@":
+		return ap.eventHandler.ICH(getInt(params, 1))
+	case "A":
+		return ap.eventHandler.CUU(getInt(params, 1))
+	case "B":
+		return ap.eventHandler.CUD(getInt(params, 1))
+	case "C":
+		return ap.eventHandler.CUF(getInt(params, 1))
+	case "D":
+		return ap.eventHandler.CUB(getInt(params, 1))
+	case "E":
+		return ap.eventHandler.CNL(getInt(params, 1))
+	case "F":
+		return ap.eventHandler.CPL(getInt(params, 1))
+	case "G":
+		return ap.eventHandler.CHA(getInt(params, 1))
+	case "H":
+		ints := getInts(params, 2, 1)
+		x, y := ints[0], ints[1]
+		return ap.eventHandler.CUP(x, y)
+	case "J":
+		param := getEraseParam(params)
+		return ap.eventHandler.ED(param)
+	case "K":
+		param := getEraseParam(params)
+		return ap.eventHandler.EL(param)
+	case "L":
+		return ap.eventHandler.IL(getInt(params, 1))
+	case "M":
+		return ap.eventHandler.DL(getInt(params, 1))
+	case "P":
+		return ap.eventHandler.DCH(getInt(params, 1))
+	case "S":
+		return ap.eventHandler.SU(getInt(params, 1))
+	case "T":
+		return ap.eventHandler.SD(getInt(params, 1))
+	case "c":
+		return ap.eventHandler.DA(params)
+	case "d":
+		return ap.eventHandler.VPA(getInt(params, 1))
+	case "f":
+		ints := getInts(params, 2, 1)
+		x, y := ints[0], ints[1]
+		return ap.eventHandler.HVP(x, y)
+	case "h":
+		return ap.hDispatch(params)
+	case "l":
+		return ap.lDispatch(params)
+	case "m":
+		return ap.eventHandler.SGR(getInts(params, 1, 0))
+	case "r":
+		ints := getInts(params, 2, 1)
+		top, bottom := ints[0], ints[1]
+		return ap.eventHandler.DECSTBM(top, bottom)
+	default:
+		logger.Errorf(fmt.Sprintf("Unsupported CSI command: '%s', with full context:  %v", cmd, ap.context))
+		return nil
+	}
+
+}
+
+func (ap *AnsiParser) print() error {
+	return ap.eventHandler.Print(ap.context.currentChar)
+}
+
+func (ap *AnsiParser) clear() error {
+	ap.context = &ansiContext{}
+	return nil
+}
+
+func (ap *AnsiParser) execute() error {
+	return ap.eventHandler.Execute(ap.context.currentChar)
+}

vendor/github.com/Azure/go-ansiterm/parser_test.go

@@ -0,0 +1,141 @@
+package ansiterm
+
+import (
+	"fmt"
+	"testing"
+)
+
+func TestStateTransitions(t *testing.T) {
+	stateTransitionHelper(t, "CsiEntry", "Ground", alphabetics)
+	stateTransitionHelper(t, "CsiEntry", "CsiParam", csiCollectables)
+	stateTransitionHelper(t, "Escape", "CsiEntry", []byte{ANSI_ESCAPE_SECONDARY})
+	stateTransitionHelper(t, "Escape", "OscString", []byte{0x5D})
+	stateTransitionHelper(t, "Escape", "Ground", escapeToGroundBytes)
+	stateTransitionHelper(t, "Escape", "EscapeIntermediate", intermeds)
+	stateTransitionHelper(t, "EscapeIntermediate", "EscapeIntermediate", intermeds)
+	stateTransitionHelper(t, "EscapeIntermediate", "EscapeIntermediate", executors)
+	stateTransitionHelper(t, "EscapeIntermediate", "Ground", escapeIntermediateToGroundBytes)
+	stateTransitionHelper(t, "OscString", "Ground", []byte{ANSI_BEL})
+	stateTransitionHelper(t, "OscString", "Ground", []byte{0x5C})
+	stateTransitionHelper(t, "Ground", "Ground", executors)
+}
+
+func TestAnyToX(t *testing.T) {
+	anyToXHelper(t, []byte{ANSI_ESCAPE_PRIMARY}, "Escape")
+	anyToXHelper(t, []byte{DCS_ENTRY}, "DcsEntry")
+	anyToXHelper(t, []byte{OSC_STRING}, "OscString")
+	anyToXHelper(t, []byte{CSI_ENTRY}, "CsiEntry")
+	anyToXHelper(t, toGroundBytes, "Ground")
+}
+
+func TestCollectCsiParams(t *testing.T) {
+	parser, _ := createTestParser("CsiEntry")
+	parser.Parse(csiCollectables)
+
+	buffer := parser.context.paramBuffer
+	bufferCount := len(buffer)
+
+	if bufferCount != len(csiCollectables) {
+		t.Errorf("Buffer:    %v", buffer)
+		t.Errorf("CsiParams: %v", csiCollectables)
+		t.Errorf("Buffer count failure: %d != %d", bufferCount, len(csiParams))
+		return
+	}
+
+	for i, v := range csiCollectables {
+		if v != buffer[i] {
+			t.Errorf("Buffer:    %v", buffer)
+			t.Errorf("CsiParams: %v", csiParams)
+			t.Errorf("Mismatch at buffer[%d] = %d", i, buffer[i])
+		}
+	}
+}
+
+func TestParseParams(t *testing.T) {
+	parseParamsHelper(t, []byte{}, []string{})
+	parseParamsHelper(t, []byte{';'}, []string{})
+	parseParamsHelper(t, []byte{';', ';'}, []string{})
+	parseParamsHelper(t, []byte{'7'}, []string{"7"})
+	parseParamsHelper(t, []byte{'7', ';'}, []string{"7"})
+	parseParamsHelper(t, []byte{'7', ';', ';'}, []string{"7"})
+	parseParamsHelper(t, []byte{'7', ';', ';', '8'}, []string{"7", "8"})
+	parseParamsHelper(t, []byte{'7', ';', '8', ';'}, []string{"7", "8"})
+	parseParamsHelper(t, []byte{'7', ';', ';', '8', ';', ';'}, []string{"7", "8"})
+	parseParamsHelper(t, []byte{'7', '8'}, []string{"78"})
+	parseParamsHelper(t, []byte{'7', '8', ';'}, []string{"78"})
+	parseParamsHelper(t, []byte{'7', '8', ';', '9', '0'}, []string{"78", "90"})
+	parseParamsHelper(t, []byte{'7', '8', ';', ';', '9', '0'}, []string{"78", "90"})
+	parseParamsHelper(t, []byte{'7', '8', ';', '9', '0', ';'}, []string{"78", "90"})
+	parseParamsHelper(t, []byte{'7', '8', ';', '9', '0', ';', ';'}, []string{"78", "90"})
+}
+
+func TestCursor(t *testing.T) {
+	cursorSingleParamHelper(t, 'A', "CUU")
+	cursorSingleParamHelper(t, 'B', "CUD")
+	cursorSingleParamHelper(t, 'C', "CUF")
+	cursorSingleParamHelper(t, 'D', "CUB")
+	cursorSingleParamHelper(t, 'E', "CNL")
+	cursorSingleParamHelper(t, 'F', "CPL")
+	cursorSingleParamHelper(t, 'G', "CHA")
+	cursorTwoParamHelper(t, 'H', "CUP")
+	cursorTwoParamHelper(t, 'f', "HVP")
+	funcCallParamHelper(t, []byte{'?', '2', '5', 'h'}, "CsiEntry", "Ground", []string{"DECTCEM([true])"})
+	funcCallParamHelper(t, []byte{'?', '2', '5', 'l'}, "CsiEntry", "Ground", []string{"DECTCEM([false])"})
+}
+
+func TestErase(t *testing.T) {
+	// Erase in Display
+	eraseHelper(t, 'J', "ED")
+
+	// Erase in Line
+	eraseHelper(t, 'K', "EL")
+}
+
+func TestSelectGraphicRendition(t *testing.T) {
+	funcCallParamHelper(t, []byte{'m'}, "CsiEntry", "Ground", []string{"SGR([0])"})
+	funcCallParamHelper(t, []byte{'0', 'm'}, "CsiEntry", "Ground", []string{"SGR([0])"})
+	funcCallParamHelper(t, []byte{'0', ';', '1', 'm'}, "CsiEntry", "Ground", []string{"SGR([0 1])"})
+	funcCallParamHelper(t, []byte{'0', ';', '1', ';', '2', 'm'}, "CsiEntry", "Ground", []string{"SGR([0 1 2])"})
+}
+
+func TestScroll(t *testing.T) {
+	scrollHelper(t, 'S', "SU")
+	scrollHelper(t, 'T', "SD")
+}
+
+func TestPrint(t *testing.T) {
+	parser, evtHandler := createTestParser("Ground")
+	parser.Parse(printables)
+	validateState(t, parser.currState, "Ground")
+
+	for i, v := range printables {
+		expectedCall := fmt.Sprintf("Print([%s])", string(v))
+		actualCall := evtHandler.FunctionCalls[i]
+		if actualCall != expectedCall {
+			t.Errorf("Actual != Expected: %v != %v at %d", actualCall, expectedCall, i)
+		}
+	}
+}
+
+func TestClear(t *testing.T) {
+	p, _ := createTestParser("Ground")
+	fillContext(p.context)
+	p.clear()
+	validateEmptyContext(t, p.context)
+}
+
+func TestClearOnStateChange(t *testing.T) {
+	clearOnStateChangeHelper(t, "Ground", "Escape", []byte{ANSI_ESCAPE_PRIMARY})
+	clearOnStateChangeHelper(t, "Ground", "CsiEntry", []byte{CSI_ENTRY})
+}
+
+func TestC0(t *testing.T) {
+	expectedCall := "Execute([" + string(ANSI_LINE_FEED) + "])"
+	c0Helper(t, []byte{ANSI_LINE_FEED}, "Ground", []string{expectedCall})
+	expectedCall = "Execute([" + string(ANSI_CARRIAGE_RETURN) + "])"
+	c0Helper(t, []byte{ANSI_CARRIAGE_RETURN}, "Ground", []string{expectedCall})
+}
+
+func TestEscDispatch(t *testing.T) {
+	funcCallParamHelper(t, []byte{'M'}, "Escape", "Ground", []string{"RI([])"})
+}

vendor/github.com/Azure/go-ansiterm/parser_test_helpers_test.go

@@ -0,0 +1,114 @@
+package ansiterm
+
+import (
+	"fmt"
+	"testing"
+)
+
+func getStateNames() []string {
+	parser, _ := createTestParser("Ground")
+
+	stateNames := []string{}
+	for _, state := range parser.stateMap {
+		stateNames = append(stateNames, state.Name())
+	}
+
+	return stateNames
+}
+
+func stateTransitionHelper(t *testing.T, start string, end string, bytes []byte) {
+	for _, b := range bytes {
+		bytes := []byte{byte(b)}
+		parser, _ := createTestParser(start)
+		parser.Parse(bytes)
+		validateState(t, parser.currState, end)
+	}
+}
+
+func anyToXHelper(t *testing.T, bytes []byte, expectedState string) {
+	for _, s := range getStateNames() {
+		stateTransitionHelper(t, s, expectedState, bytes)
+	}
+}
+
+func funcCallParamHelper(t *testing.T, bytes []byte, start string, expected string, expectedCalls []string) {
+	parser, evtHandler := createTestParser(start)
+	parser.Parse(bytes)
+	validateState(t, parser.currState, expected)
+	validateFuncCalls(t, evtHandler.FunctionCalls, expectedCalls)
+}
+
+func parseParamsHelper(t *testing.T, bytes []byte, expectedParams []string) {
+	params, err := parseParams(bytes)
+
+	if err != nil {
+		t.Errorf("Parameter parse error: %v", err)
+		return
+	}
+
+	if len(params) != len(expectedParams) {
+		t.Errorf("Parsed   parameters: %v", params)
+		t.Errorf("Expected parameters: %v", expectedParams)
+		t.Errorf("Parameter length failure: %d != %d", len(params), len(expectedParams))
+		return
+	}
+
+	for i, v := range expectedParams {
+		if v != params[i] {
+			t.Errorf("Parsed   parameters: %v", params)
+			t.Errorf("Expected parameters: %v", expectedParams)
+			t.Errorf("Parameter parse failure: %s != %s at position %d", v, params[i], i)
+		}
+	}
+}
+
+func cursorSingleParamHelper(t *testing.T, command byte, funcName string) {
+	funcCallParamHelper(t, []byte{command}, "CsiEntry", "Ground", []string{fmt.Sprintf("%s([1])", funcName)})
+	funcCallParamHelper(t, []byte{'0', command}, "CsiEntry", "Ground", []string{fmt.Sprintf("%s([1])", funcName)})
+	funcCallParamHelper(t, []byte{'2', command}, "CsiEntry", "Ground", []string{fmt.Sprintf("%s([2])", funcName)})
+	funcCallParamHelper(t, []byte{'2', '3', command}, "CsiEntry", "Ground", []string{fmt.Sprintf("%s([23])", funcName)})
+	funcCallParamHelper(t, []byte{'2', ';', '3', command}, "CsiEntry", "Ground", []string{fmt.Sprintf("%s([2])", funcName)})
+	funcCallParamHelper(t, []byte{'2', ';', '3', ';', '4', command}, "CsiEntry", "Ground", []string{fmt.Sprintf("%s([2])", funcName)})
+}
+
+func cursorTwoParamHelper(t *testing.T, command byte, funcName string) {
+	funcCallParamHelper(t, []byte{command}, "CsiEntry", "Ground", []string{fmt.Sprintf("%s([1 1])", funcName)})
+	funcCallParamHelper(t, []byte{'0', command}, "CsiEntry", "Ground", []string{fmt.Sprintf("%s([1 1])", funcName)})
+	funcCallParamHelper(t, []byte{'2', command}, "CsiEntry", "Ground", []string{fmt.Sprintf("%s([2 1])", funcName)})
+	funcCallParamHelper(t, []byte{'2', '3', command}, "CsiEntry", "Ground", []string{fmt.Sprintf("%s([23 1])", funcName)})
+	funcCallParamHelper(t, []byte{'2', ';', '3', command}, "CsiEntry", "Ground", []string{fmt.Sprintf("%s([2 3])", funcName)})
+	funcCallParamHelper(t, []byte{'2', ';', '3', ';', '4', command}, "CsiEntry", "Ground", []string{fmt.Sprintf("%s([2 3])", funcName)})
+}
+
+func eraseHelper(t *testing.T, command byte, funcName string) {
+	funcCallParamHelper(t, []byte{command}, "CsiEntry", "Ground", []string{fmt.Sprintf("%s([0])", funcName)})
+	funcCallParamHelper(t, []byte{'0', command}, "CsiEntry", "Ground", []string{fmt.Sprintf("%s([0])", funcName)})
+	funcCallParamHelper(t, []byte{'1', command}, "CsiEntry", "Ground", []string{fmt.Sprintf("%s([1])", funcName)})
+	funcCallParamHelper(t, []byte{'2', command}, "CsiEntry", "Ground", []string{fmt.Sprintf("%s([2])", funcName)})
+	funcCallParamHelper(t, []byte{'3', command}, "CsiEntry", "Ground", []string{fmt.Sprintf("%s([3])", funcName)})
+	funcCallParamHelper(t, []byte{'4', command}, "CsiEntry", "Ground", []string{fmt.Sprintf("%s([0])", funcName)})
+	funcCallParamHelper(t, []byte{'1', ';', '2', command}, "CsiEntry", "Ground", []string{fmt.Sprintf("%s([1])", funcName)})
+}
+
+func scrollHelper(t *testing.T, command byte, funcName string) {
+	funcCallParamHelper(t, []byte{command}, "CsiEntry", "Ground", []string{fmt.Sprintf("%s([1])", funcName)})
+	funcCallParamHelper(t, []byte{'0', command}, "CsiEntry", "Ground", []string{fmt.Sprintf("%s([1])", funcName)})
+	funcCallParamHelper(t, []byte{'1', command}, "CsiEntry", "Ground", []string{fmt.Sprintf("%s([1])", funcName)})
+	funcCallParamHelper(t, []byte{'5', command}, "CsiEntry", "Ground", []string{fmt.Sprintf("%s([5])", funcName)})
+	funcCallParamHelper(t, []byte{'4', ';', '6', command}, "CsiEntry", "Ground", []string{fmt.Sprintf("%s([4])", funcName)})
+}
+
+func clearOnStateChangeHelper(t *testing.T, start string, end string, bytes []byte) {
+	p, _ := createTestParser(start)
+	fillContext(p.context)
+	p.Parse(bytes)
+	validateState(t, p.currState, end)
+	validateEmptyContext(t, p.context)
+}
+
+func c0Helper(t *testing.T, bytes []byte, expectedState string, expectedCalls []string) {
+	parser, evtHandler := createTestParser("Ground")
+	parser.Parse(bytes)
+	validateState(t, parser.currState, expectedState)
+	validateFuncCalls(t, evtHandler.FunctionCalls, expectedCalls)
+}

vendor/github.com/Azure/go-ansiterm/parser_test_utilities_test.go

@@ -0,0 +1,66 @@
+package ansiterm
+
+import (
+	"testing"
+)
+
+func createTestParser(s string) (*AnsiParser, *TestAnsiEventHandler) {
+	evtHandler := CreateTestAnsiEventHandler()
+	parser := CreateParser(s, evtHandler)
+
+	return parser, evtHandler
+}
+
+func validateState(t *testing.T, actualState state, expectedStateName string) {
+	actualName := "Nil"
+
+	if actualState != nil {
+		actualName = actualState.Name()
+	}
+
+	if actualName != expectedStateName {
+		t.Errorf("Invalid state: '%s' != '%s'", actualName, expectedStateName)
+	}
+}
+
+func validateFuncCalls(t *testing.T, actualCalls []string, expectedCalls []string) {
+	actualCount := len(actualCalls)
+	expectedCount := len(expectedCalls)
+
+	if actualCount != expectedCount {
+		t.Errorf("Actual   calls: %v", actualCalls)
+		t.Errorf("Expected calls: %v", expectedCalls)
+		t.Errorf("Call count error: %d != %d", actualCount, expectedCount)
+		return
+	}
+
+	for i, v := range actualCalls {
+		if v != expectedCalls[i] {
+			t.Errorf("Actual   calls: %v", actualCalls)
+			t.Errorf("Expected calls: %v", expectedCalls)
+			t.Errorf("Mismatched calls: %s != %s with lengths %d and %d", v, expectedCalls[i], len(v), len(expectedCalls[i]))
+		}
+	}
+}
+
+func fillContext(context *ansiContext) {
+	context.currentChar = 'A'
+	context.paramBuffer = []byte{'C', 'D', 'E'}
+	context.interBuffer = []byte{'F', 'G', 'H'}
+}
+
+func validateEmptyContext(t *testing.T, context *ansiContext) {
+	var expectedCurrChar byte = 0x0
+	if context.currentChar != expectedCurrChar {
+		t.Errorf("Currentchar mismatch '%#x' != '%#x'", context.currentChar, expectedCurrChar)
+	}
+
+	if len(context.paramBuffer) != 0 {
+		t.Errorf("Non-empty parameter buffer: %v", context.paramBuffer)
+	}
+
+	if len(context.paramBuffer) != 0 {
+		t.Errorf("Non-empty intermediate buffer: %v", context.interBuffer)
+	}
+
+}

vendor/github.com/Azure/go-ansiterm/states.go

@@ -0,0 +1,71 @@
+package ansiterm
+
+type stateID int
+
+type state interface {
+	Enter() error
+	Exit() error
+	Handle(byte) (state, error)
+	Name() string
+	Transition(state) error
+}
+
+type baseState struct {
+	name   string
+	parser *AnsiParser
+}
+
+func (base baseState) Enter() error {
+	return nil
+}
+
+func (base baseState) Exit() error {
+	return nil
+}
+
+func (base baseState) Handle(b byte) (s state, e error) {
+
+	switch {
+	case b == CSI_ENTRY:
+		return base.parser.csiEntry, nil
+	case b == DCS_ENTRY:
+		return base.parser.dcsEntry, nil
+	case b == ANSI_ESCAPE_PRIMARY:
+		return base.parser.escape, nil
+	case b == OSC_STRING:
+		return base.parser.oscString, nil
+	case sliceContains(toGroundBytes, b):
+		return base.parser.ground, nil
+	}
+
+	return nil, nil
+}
+
+func (base baseState) Name() string {
+	return base.name
+}
+
+func (base baseState) Transition(s state) error {
+	if s == base.parser.ground {
+		execBytes := []byte{0x18}
+		execBytes = append(execBytes, 0x1A)
+		execBytes = append(execBytes, getByteRange(0x80, 0x8F)...)
+		execBytes = append(execBytes, getByteRange(0x91, 0x97)...)
+		execBytes = append(execBytes, 0x99)
+		execBytes = append(execBytes, 0x9A)
+
+		if sliceContains(execBytes, base.parser.context.currentChar) {
+			return base.parser.execute()
+		}
+	}
+
+	return nil
+}
+
+type dcsEntryState struct {
+	baseState
+}
+
+type errorState struct {
+	baseState
+}

vendor/github.com/Azure/go-ansiterm/test_event_handler_test.go

@@ -0,0 +1,173 @@
+package ansiterm
+
+import (
+	"fmt"
+	"strconv"
+)
+
+type TestAnsiEventHandler struct {
+	FunctionCalls []string
+}
+
+func CreateTestAnsiEventHandler() *TestAnsiEventHandler {
+	evtHandler := TestAnsiEventHandler{}
+	evtHandler.FunctionCalls = make([]string, 0)
+	return &evtHandler
+}
+
+func (h *TestAnsiEventHandler) recordCall(call string, params []string) {
+	s := fmt.Sprintf("%s(%v)", call, params)
+	h.FunctionCalls = append(h.FunctionCalls, s)
+}
+
+func (h *TestAnsiEventHandler) Print(b byte) error {
+	h.recordCall("Print", []string{string(b)})
+	return nil
+}
+
+func (h *TestAnsiEventHandler) Execute(b byte) error {
+	h.recordCall("Execute", []string{string(b)})
+	return nil
+}
+
+func (h *TestAnsiEventHandler) CUU(param int) error {
+	h.recordCall("CUU", []string{strconv.Itoa(param)})
+	return nil
+}
+
+func (h *TestAnsiEventHandler) CUD(param int) error {
+	h.recordCall("CUD", []string{strconv.Itoa(param)})
+	return nil
+}
+
+func (h *TestAnsiEventHandler) CUF(param int) error {
+	h.recordCall("CUF", []string{strconv.Itoa(param)})
+	return nil
+}
+
+func (h *TestAnsiEventHandler) CUB(param int) error {
+	h.recordCall("CUB", []string{strconv.Itoa(param)})
+	return nil
+}
+
+func (h *TestAnsiEventHandler) CNL(param int) error {
+	h.recordCall("CNL", []string{strconv.Itoa(param)})
+	return nil
+}
+
+func (h *TestAnsiEventHandler) CPL(param int) error {
+	h.recordCall("CPL", []string{strconv.Itoa(param)})
+	return nil
+}
+
+func (h *TestAnsiEventHandler) CHA(param int) error {
+	h.recordCall("CHA", []string{strconv.Itoa(param)})
+	return nil
+}
+
+func (h *TestAnsiEventHandler) VPA(param int) error {
+	h.recordCall("VPA", []string{strconv.Itoa(param)})
+	return nil
+}
+
+func (h *TestAnsiEventHandler) CUP(x int, y int) error {
+	xS, yS := strconv.Itoa(x), strconv.Itoa(y)
+	h.recordCall("CUP", []string{xS, yS})
+	return nil
+}
+
+func (h *TestAnsiEventHandler) HVP(x int, y int) error {
+	xS, yS := strconv.Itoa(x), strconv.Itoa(y)
+	h.recordCall("HVP", []string{xS, yS})
+	return nil
+}
+
+func (h *TestAnsiEventHandler) DECTCEM(visible bool) error {
+	h.recordCall("DECTCEM", []string{strconv.FormatBool(visible)})
+	return nil
+}
+
+func (h *TestAnsiEventHandler) DECOM(visible bool) error {
+	h.recordCall("DECOM", []string{strconv.FormatBool(visible)})
+	return nil
+}
+
+func (h *TestAnsiEventHandler) DECCOLM(use132 bool) error {
+	h.recordCall("DECOLM", []string{strconv.FormatBool(use132)})
+	return nil
+}
+
+func (h *TestAnsiEventHandler) ED(param int) error {
+	h.recordCall("ED", []string{strconv.Itoa(param)})
+	return nil
+}
+
+func (h *TestAnsiEventHandler) EL(param int) error {
+	h.recordCall("EL", []string{strconv.Itoa(param)})
+	return nil
+}
+
+func (h *TestAnsiEventHandler) IL(param int) error {
+	h.recordCall("IL", []string{strconv.Itoa(param)})
+	return nil
+}
+
+func (h *TestAnsiEventHandler) DL(param int) error {
+	h.recordCall("DL", []string{strconv.Itoa(param)})
+	return nil
+}
+
+func (h *TestAnsiEventHandler) ICH(param int) error {
+	h.recordCall("ICH", []string{strconv.Itoa(param)})
+	return nil
+}
+
+func (h *TestAnsiEventHandler) DCH(param int) error {
+	h.recordCall("DCH", []string{strconv.Itoa(param)})
+	return nil
+}
+
+func (h *TestAnsiEventHandler) SGR(params []int) error {
+	strings := []string{}
+	for _, v := range params {
+		strings = append(strings, strconv.Itoa(v))
+	}
+
+	h.recordCall("SGR", strings)
+	return nil
+}
+
+func (h *TestAnsiEventHandler) SU(param int) error {
+	h.recordCall("SU", []string{strconv.Itoa(param)})
+	return nil
+}
+
+func (h *TestAnsiEventHandler) SD(param int) error {
+	h.recordCall("SD", []string{strconv.Itoa(param)})
+	return nil
+}
+
+func (h *TestAnsiEventHandler) DA(params []string) error {
+	h.recordCall("DA", params)
+	return nil
+}
+
+func (h *TestAnsiEventHandler) DECSTBM(top int, bottom int) error {
+	topS, bottomS := strconv.Itoa(top), strconv.Itoa(bottom)
+	h.recordCall("DECSTBM", []string{topS, bottomS})
+	return nil
+}
+
+func (h *TestAnsiEventHandler) RI() error {
+	h.recordCall("RI", nil)
+	return nil
+}
+
+func (h *TestAnsiEventHandler) IND() error {
+	h.recordCall("IND", nil)
+	return nil
+}
+
+func (h *TestAnsiEventHandler) Flush() error {
+	return nil
+}

vendor/github.com/Azure/go-ansiterm/utilities.go

@@ -0,0 +1,21 @@
+package ansiterm
+
+import (
+	"strconv"
+)
+
+func sliceContains(bytes []byte, b byte) bool {
+	for _, v := range bytes {
+		if v == b {
+			return true
+		}
+	}
+
+	return false
+}
+
+func convertBytesToInteger(bytes []byte) int {
+	s := string(bytes)
+	i, _ := strconv.Atoi(s)
+	return i
+}

vendor/github.com/Azure/go-ansiterm/winterm/ansi.go

@@ -0,0 +1,182 @@
+// +build windows
+
+package winterm
+
+import (
+	"fmt"
+	"os"
+	"strconv"
+	"strings"
+	"syscall"
+
+	"github.com/Azure/go-ansiterm"
+)
+
+// Windows keyboard constants
+// See https://msdn.microsoft.com/en-us/library/windows/desktop/dd375731(v=vs.85).aspx.
+const (
+	VK_PRIOR    = 0x21 // PAGE UP key
+	VK_NEXT     = 0x22 // PAGE DOWN key
+	VK_END      = 0x23 // END key
+	VK_HOME     = 0x24 // HOME key
+	VK_LEFT     = 0x25 // LEFT ARROW key
+	VK_UP       = 0x26 // UP ARROW key
+	VK_RIGHT    = 0x27 // RIGHT ARROW key
+	VK_DOWN     = 0x28 // DOWN ARROW key
+	VK_SELECT   = 0x29 // SELECT key
+	VK_PRINT    = 0x2A // PRINT key
+	VK_EXECUTE  = 0x2B // EXECUTE key
+	VK_SNAPSHOT = 0x2C // PRINT SCREEN key
+	VK_INSERT   = 0x2D // INS key
+	VK_DELETE   = 0x2E // DEL key
+	VK_HELP     = 0x2F // HELP key
+	VK_F1       = 0x70 // F1 key
+	VK_F2       = 0x71 // F2 key
+	VK_F3       = 0x72 // F3 key
+	VK_F4       = 0x73 // F4 key
+	VK_F5       = 0x74 // F5 key
+	VK_F6       = 0x75 // F6 key
+	VK_F7       = 0x76 // F7 key
+	VK_F8       = 0x77 // F8 key
+	VK_F9       = 0x78 // F9 key
+	VK_F10      = 0x79 // F10 key
+	VK_F11      = 0x7A // F11 key
+	VK_F12      = 0x7B // F12 key
+
+	RIGHT_ALT_PRESSED  = 0x0001
+	LEFT_ALT_PRESSED   = 0x0002
+	RIGHT_CTRL_PRESSED = 0x0004
+	LEFT_CTRL_PRESSED  = 0x0008
+	SHIFT_PRESSED      = 0x0010
+	NUMLOCK_ON         = 0x0020
+	SCROLLLOCK_ON      = 0x0040
+	CAPSLOCK_ON        = 0x0080
+	ENHANCED_KEY       = 0x0100
+)
+
+type ansiCommand struct {
+	CommandBytes []byte
+	Command      string
+	Parameters   []string
+	IsSpecial    bool
+}
+
+func newAnsiCommand(command []byte) *ansiCommand {
+
+	if isCharacterSelectionCmdChar(command[1]) {
+		// Is Character Set Selection commands
+		return &ansiCommand{
+			CommandBytes: command,
+			Command:      string(command),
+			IsSpecial:    true,
+		}
+	}
+
+	// last char is command character
+	lastCharIndex := len(command) - 1
+
+	ac := &ansiCommand{
+		CommandBytes: command,
+		Command:      string(command[lastCharIndex]),
+		IsSpecial:    false,
+	}
+
+	// more than a single escape
+	if lastCharIndex != 0 {
+		start := 1
+		// skip if double char escape sequence
+		if command[0] == ansiterm.ANSI_ESCAPE_PRIMARY && command[1] == ansiterm.ANSI_ESCAPE_SECONDARY {
+			start++
+		}
+		// convert this to GetNextParam method
+		ac.Parameters = strings.Split(string(command[start:lastCharIndex]), ansiterm.ANSI_PARAMETER_SEP)
+	}
+
+	return ac
+}
+
+func (ac *ansiCommand) paramAsSHORT(index int, defaultValue int16) int16 {
+	if index < 0 || index >= len(ac.Parameters) {
+		return defaultValue
+	}
+
+	param, err := strconv.ParseInt(ac.Parameters[index], 10, 16)
+	if err != nil {
+		return defaultValue
+	}
+
+	return int16(param)
+}
+
+func (ac *ansiCommand) String() string {
+	return fmt.Sprintf("0x%v \"%v\" (\"%v\")",
+		bytesToHex(ac.CommandBytes),
+		ac.Command,
+		strings.Join(ac.Parameters, "\",\""))
+}
+
+// isAnsiCommandChar returns true if the passed byte falls within the range of ANSI commands.
+// See http://manpages.ubuntu.com/manpages/intrepid/man4/console_codes.4.html.
+func isAnsiCommandChar(b byte) bool {
+	switch {
+	case ansiterm.ANSI_COMMAND_FIRST <= b && b <= ansiterm.ANSI_COMMAND_LAST && b != ansiterm.ANSI_ESCAPE_SECONDARY:
+		return true
+	case b == ansiterm.ANSI_CMD_G1 || b == ansiterm.ANSI_CMD_OSC || b == ansiterm.ANSI_CMD_DECPAM || b == ansiterm.ANSI_CMD_DECPNM:
+		// non-CSI escape sequence terminator
+		return true
+	case b == ansiterm.ANSI_CMD_STR_TERM || b == ansiterm.ANSI_BEL:
+		// String escape sequence terminator
+		return true
+	}
+	return false
+}
+
+func isXtermOscSequence(command []byte, current byte) bool {
+	return (len(command) >= 2 && command[0] == ansiterm.ANSI_ESCAPE_PRIMARY && command[1] == ansiterm.ANSI_CMD_OSC && current != ansiterm.ANSI_BEL)
+}
+
+func isCharacterSelectionCmdChar(b byte) bool {
+	return (b == ansiterm.ANSI_CMD_G0 || b == ansiterm.ANSI_CMD_G1 || b == ansiterm.ANSI_CMD_G2 || b == ansiterm.ANSI_CMD_G3)
+}
+
+// bytesToHex converts a slice of bytes to a human-readable string.
+func bytesToHex(b []byte) string {
+	hex := make([]string, len(b))
+	for i, ch := range b {
+		hex[i] = fmt.Sprintf("%X", ch)
+	}
+	return strings.Join(hex, "")
+}
+
+// ensureInRange adjusts the passed value, if necessary, to ensure it is within
+// the passed min / max range.
+func ensureInRange(n int16, min int16, max int16) int16 {
+	if n < min {
+		return min
+	} else if n > max {
+		return max
+	} else {
+		return n
+	}
+}
+
+func GetStdFile(nFile int) (*os.File, uintptr) {
+	var file *os.File
+	switch nFile {
+	case syscall.STD_INPUT_HANDLE:
+		file = os.Stdin
+	case syscall.STD_OUTPUT_HANDLE:
+		file = os.Stdout
+	case syscall.STD_ERROR_HANDLE:
+		file = os.Stderr
+	default:
+		panic(fmt.Errorf("Invalid standard handle identifier: %v", nFile))
+	}
+
+	fd, err := syscall.GetStdHandle(nFile)
+	if err != nil {
+		panic(fmt.Errorf("Invalid standard handle indentifier: %v -- %v", nFile, err))
+	}
+
+	return file, uintptr(fd)
+}

vendor/github.com/Azure/go-ansiterm/winterm/api.go

@@ -0,0 +1,322 @@
+// +build windows
+
+package winterm
+
+import (
+	"fmt"
+	"syscall"
+	"unsafe"
+)
+
+//===========================================================================================================
+// IMPORTANT NOTE:
+//
+//	The methods below make extensive use of the "unsafe" package to obtain the required pointers.
+//	Beginning in Go 1.3, the garbage collector may release local variables (e.g., incoming arguments, stack
+//	variables) the pointers reference *before* the API completes.
+//
+//  As a result, in those cases, the code must hint that the variables remain in active by invoking the
+//	dummy method "use" (see below). Newer versions of Go are planned to change the mechanism to no longer
+//	require unsafe pointers.
+//
+//	If you add or modify methods, ENSURE protection of local variables through the "use" builtin to inform
+//	the garbage collector the variables remain in use if:
+//
+//	-- The value is not a pointer (e.g., int32, struct)
+//	-- The value is not referenced by the method after passing the pointer to Windows
+//
+//	See http://golang.org/doc/go1.3.
+//===========================================================================================================
+
+var (
+	kernel32DLL = syscall.NewLazyDLL("kernel32.dll")
+
+	getConsoleCursorInfoProc       = kernel32DLL.NewProc("GetConsoleCursorInfo")
+	setConsoleCursorInfoProc       = kernel32DLL.NewProc("SetConsoleCursorInfo")
+	setConsoleCursorPositionProc   = kernel32DLL.NewProc("SetConsoleCursorPosition")
+	setConsoleModeProc             = kernel32DLL.NewProc("SetConsoleMode")
+	getConsoleScreenBufferInfoProc = kernel32DLL.NewProc("GetConsoleScreenBufferInfo")
+	setConsoleScreenBufferSizeProc = kernel32DLL.NewProc("SetConsoleScreenBufferSize")
+	scrollConsoleScreenBufferProc  = kernel32DLL.NewProc("ScrollConsoleScreenBufferA")
+	setConsoleTextAttributeProc    = kernel32DLL.NewProc("SetConsoleTextAttribute")
+	setConsoleWindowInfoProc       = kernel32DLL.NewProc("SetConsoleWindowInfo")
+	writeConsoleOutputProc         = kernel32DLL.NewProc("WriteConsoleOutputW")
+	readConsoleInputProc           = kernel32DLL.NewProc("ReadConsoleInputW")
+	waitForSingleObjectProc        = kernel32DLL.NewProc("WaitForSingleObject")
+)
+
+// Windows Console constants
+const (
+	// Console modes
+	// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms686033(v=vs.85).aspx.
+	ENABLE_PROCESSED_INPUT = 0x0001
+	ENABLE_LINE_INPUT      = 0x0002
+	ENABLE_ECHO_INPUT      = 0x0004
+	ENABLE_WINDOW_INPUT    = 0x0008
+	ENABLE_MOUSE_INPUT     = 0x0010
+	ENABLE_INSERT_MODE     = 0x0020
+	ENABLE_QUICK_EDIT_MODE = 0x0040
+	ENABLE_EXTENDED_FLAGS  = 0x0080
+
+	ENABLE_PROCESSED_OUTPUT   = 0x0001
+	ENABLE_WRAP_AT_EOL_OUTPUT = 0x0002
+
+	// Character attributes
+	// Note:
+	// -- The attributes are combined to produce various colors (e.g., Blue + Green will create Cyan).
+	//    Clearing all foreground or background colors results in black; setting all creates white.
+	// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms682088(v=vs.85).aspx#_win32_character_attributes.
+	FOREGROUND_BLUE      uint16 = 0x0001
+	FOREGROUND_GREEN     uint16 = 0x0002
+	FOREGROUND_RED       uint16 = 0x0004
+	FOREGROUND_INTENSITY uint16 = 0x0008
+	FOREGROUND_MASK      uint16 = 0x000F
+
+	BACKGROUND_BLUE      uint16 = 0x0010
+	BACKGROUND_GREEN     uint16 = 0x0020
+	BACKGROUND_RED       uint16 = 0x0040
+	BACKGROUND_INTENSITY uint16 = 0x0080
+	BACKGROUND_MASK      uint16 = 0x00F0
+
+	COMMON_LVB_MASK          uint16 = 0xFF00
+	COMMON_LVB_REVERSE_VIDEO uint16 = 0x4000
+	COMMON_LVB_UNDERSCORE    uint16 = 0x8000
+
+	// Input event types
+	// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms683499(v=vs.85).aspx.
+	KEY_EVENT                = 0x0001
+	MOUSE_EVENT              = 0x0002
+	WINDOW_BUFFER_SIZE_EVENT = 0x0004
+	MENU_EVENT               = 0x0008
+	FOCUS_EVENT              = 0x0010
+
+	// WaitForSingleObject return codes
+	WAIT_ABANDONED = 0x00000080
+	WAIT_FAILED    = 0xFFFFFFFF
+	WAIT_SIGNALED  = 0x0000000
+	WAIT_TIMEOUT   = 0x00000102
+
+	// WaitForSingleObject wait duration
+	WAIT_INFINITE       = 0xFFFFFFFF
+	WAIT_ONE_SECOND     = 1000
+	WAIT_HALF_SECOND    = 500
+	WAIT_QUARTER_SECOND = 250
+)
+
+// Windows API Console types
+// -- See https://msdn.microsoft.com/en-us/library/windows/desktop/ms682101(v=vs.85).aspx for Console specific types (e.g., COORD)
+// -- See https://msdn.microsoft.com/en-us/library/aa296569(v=vs.60).aspx for comments on alignment
+type (
+	CHAR_INFO struct {
+		UnicodeChar uint16
+		Attributes  uint16
+	}
+
+	CONSOLE_CURSOR_INFO struct {
+		Size    uint32
+		Visible int32
+	}
+
+	CONSOLE_SCREEN_BUFFER_INFO struct {
+		Size              COORD
+		CursorPosition    COORD
+		Attributes        uint16
+		Window            SMALL_RECT
+		MaximumWindowSize COORD
+	}
+
+	COORD struct {
+		X int16
+		Y int16
+	}
+
+	SMALL_RECT struct {
+		Left   int16
+		Top    int16
+		Right  int16
+		Bottom int16
+	}
+
+	// INPUT_RECORD is a C/C++ union of which KEY_EVENT_RECORD is one case, it is also the largest
+	// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms683499(v=vs.85).aspx.
+	INPUT_RECORD struct {
+		EventType uint16
+		KeyEvent  KEY_EVENT_RECORD
+	}
+
+	KEY_EVENT_RECORD struct {
+		KeyDown         int32
+		RepeatCount     uint16
+		VirtualKeyCode  uint16
+		VirtualScanCode uint16
+		UnicodeChar     uint16
+		ControlKeyState uint32
+	}
+
+	WINDOW_BUFFER_SIZE struct {
+		Size COORD
+	}
+)
+
+// boolToBOOL converts a Go bool into a Windows int32.
+func boolToBOOL(f bool) int32 {
+	if f {
+		return int32(1)
+	} else {
+		return int32(0)
+	}
+}
+
+// GetConsoleCursorInfo retrieves information about the size and visiblity of the console cursor.
+// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms683163(v=vs.85).aspx.
+func GetConsoleCursorInfo(handle uintptr, cursorInfo *CONSOLE_CURSOR_INFO) error {
+	r1, r2, err := getConsoleCursorInfoProc.Call(handle, uintptr(unsafe.Pointer(cursorInfo)), 0)
+	return checkError(r1, r2, err)
+}
+
+// SetConsoleCursorInfo sets the size and visiblity of the console cursor.
+// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms686019(v=vs.85).aspx.
+func SetConsoleCursorInfo(handle uintptr, cursorInfo *CONSOLE_CURSOR_INFO) error {
+	r1, r2, err := setConsoleCursorInfoProc.Call(handle, uintptr(unsafe.Pointer(cursorInfo)), 0)
+	return checkError(r1, r2, err)
+}
+
+// SetConsoleCursorPosition location of the console cursor.
+// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms686025(v=vs.85).aspx.
+func SetConsoleCursorPosition(handle uintptr, coord COORD) error {
+	r1, r2, err := setConsoleCursorPositionProc.Call(handle, coordToPointer(coord))
+	use(coord)
+	return checkError(r1, r2, err)
+}
+
+// GetConsoleMode gets the console mode for given file descriptor
+// See http://msdn.microsoft.com/en-us/library/windows/desktop/ms683167(v=vs.85).aspx.
+func GetConsoleMode(handle uintptr) (mode uint32, err error) {
+	err = syscall.GetConsoleMode(syscall.Handle(handle), &mode)
+	return mode, err
+}
+
+// SetConsoleMode sets the console mode for given file descriptor
+// See http://msdn.microsoft.com/en-us/library/windows/desktop/ms686033(v=vs.85).aspx.
+func SetConsoleMode(handle uintptr, mode uint32) error {
+	r1, r2, err := setConsoleModeProc.Call(handle, uintptr(mode), 0)
+	use(mode)
+	return checkError(r1, r2, err)
+}
+
+// GetConsoleScreenBufferInfo retrieves information about the specified console screen buffer.
+// See http://msdn.microsoft.com/en-us/library/windows/desktop/ms683171(v=vs.85).aspx.
+func GetConsoleScreenBufferInfo(handle uintptr) (*CONSOLE_SCREEN_BUFFER_INFO, error) {
+	info := CONSOLE_SCREEN_BUFFER_INFO{}
+	err := checkError(getConsoleScreenBufferInfoProc.Call(handle, uintptr(unsafe.Pointer(&info)), 0))
+	if err != nil {
+		return nil, err
+	}
+	return &info, nil
+}
+
+func ScrollConsoleScreenBuffer(handle uintptr, scrollRect SMALL_RECT, clipRect SMALL_RECT, destOrigin COORD, char CHAR_INFO) error {
+	r1, r2, err := scrollConsoleScreenBufferProc.Call(handle, uintptr(unsafe.Pointer(&scrollRect)), uintptr(unsafe.Pointer(&clipRect)), coordToPointer(destOrigin), uintptr(unsafe.Pointer(&char)))
+	use(scrollRect)
+	use(clipRect)
+	use(destOrigin)
+	use(char)
+	return checkError(r1, r2, err)
+}
+
+// SetConsoleScreenBufferSize sets the size of the console screen buffer.
+// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms686044(v=vs.85).aspx.
+func SetConsoleScreenBufferSize(handle uintptr, coord COORD) error {
+	r1, r2, err := setConsoleScreenBufferSizeProc.Call(handle, coordToPointer(coord))
+	use(coord)
+	return checkError(r1, r2, err)
+}
+
+// SetConsoleTextAttribute sets the attributes of characters written to the
+// console screen buffer by the WriteFile or WriteConsole function.
+// See http://msdn.microsoft.com/en-us/library/windows/desktop/ms686047(v=vs.85).aspx.
+func SetConsoleTextAttribute(handle uintptr, attribute uint16) error {
+	r1, r2, err := setConsoleTextAttributeProc.Call(handle, uintptr(attribute), 0)
+	use(attribute)
+	return checkError(r1, r2, err)
+}
+
+// SetConsoleWindowInfo sets the size and position of the console screen buffer's window.
+// Note that the size and location must be within and no larger than the backing console screen buffer.
+// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms686125(v=vs.85).aspx.
+func SetConsoleWindowInfo(handle uintptr, isAbsolute bool, rect SMALL_RECT) error {
+	r1, r2, err := setConsoleWindowInfoProc.Call(handle, uintptr(boolToBOOL(isAbsolute)), uintptr(unsafe.Pointer(&rect)))
+	use(isAbsolute)
+	use(rect)
+	return checkError(r1, r2, err)
+}
+
+// WriteConsoleOutput writes the CHAR_INFOs from the provided buffer to the active console buffer.
+// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms687404(v=vs.85).aspx.
+func WriteConsoleOutput(handle uintptr, buffer []CHAR_INFO, bufferSize COORD, bufferCoord COORD, writeRegion *SMALL_RECT) error {
+	r1, r2, err := writeConsoleOutputProc.Call(handle, uintptr(unsafe.Pointer(&buffer[0])), coordToPointer(bufferSize), coordToPointer(bufferCoord), uintptr(unsafe.Pointer(writeRegion)))
+	use(buffer)
+	use(bufferSize)
+	use(bufferCoord)
+	return checkError(r1, r2, err)
+}
+
+// ReadConsoleInput reads (and removes) data from the console input buffer.
+// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms684961(v=vs.85).aspx.
+func ReadConsoleInput(handle uintptr, buffer []INPUT_RECORD, count *uint32) error {
+	r1, r2, err := readConsoleInputProc.Call(handle, uintptr(unsafe.Pointer(&buffer[0])), uintptr(len(buffer)), uintptr(unsafe.Pointer(count)))
+	use(buffer)
+	return checkError(r1, r2, err)
+}
+
+// WaitForSingleObject waits for the passed handle to be signaled.
+// It returns true if the handle was signaled; false otherwise.
+// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms687032(v=vs.85).aspx.
+func WaitForSingleObject(handle uintptr, msWait uint32) (bool, error) {
+	r1, _, err := waitForSingleObjectProc.Call(handle, uintptr(uint32(msWait)))
+	switch r1 {
+	case WAIT_ABANDONED, WAIT_TIMEOUT:
+		return false, nil
+	case WAIT_SIGNALED:
+		return true, nil
+	}
+	use(msWait)
+	return false, err
+}
+
+// String helpers
+func (info CONSOLE_SCREEN_BUFFER_INFO) String() string {
+	return fmt.Sprintf("Size(%v) Cursor(%v) Window(%v) Max(%v)", info.Size, info.CursorPosition, info.Window, info.MaximumWindowSize)
+}
+
+func (coord COORD) String() string {
+	return fmt.Sprintf("%v,%v", coord.X, coord.Y)
+}
+
+func (rect SMALL_RECT) String() string {
+	return fmt.Sprintf("(%v,%v),(%v,%v)", rect.Left, rect.Top, rect.Right, rect.Bottom)
+}
+
+// checkError evaluates the results of a Windows API call and returns the error if it failed.
+func checkError(r1, r2 uintptr, err error) error {
+	// Windows APIs return non-zero to indicate success
+	if r1 != 0 {
+		return nil
+	}
+
+	// Return the error if provided, otherwise default to EINVAL
+	if err != nil {
+		return err
+	}
+	return syscall.EINVAL
+}
+
+// coordToPointer converts a COORD into a uintptr (by fooling the type system).
+func coordToPointer(c COORD) uintptr {
+	// Note: This code assumes the two SHORTs are correctly laid out; the "cast" to uint32 is just to get a pointer to pass.
+	return uintptr(*((*uint32)(unsafe.Pointer(&c))))
+}
+
+// use is a no-op, but the compiler cannot see that it is.
+// Calling use(p) ensures that p is kept live until that point.
+func use(p interface{}) {}

vendor/github.com/Azure/go-ansiterm/winterm/attr_translation.go

@@ -0,0 +1,100 @@
+// +build windows
+
+package winterm
+
+import "github.com/Azure/go-ansiterm"
+
+const (
+	FOREGROUND_COLOR_MASK = FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE
+	BACKGROUND_COLOR_MASK = BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE
+)
+
+// collectAnsiIntoWindowsAttributes modifies the passed Windows text mode flags to reflect the
+// request represented by the passed ANSI mode.
+func collectAnsiIntoWindowsAttributes(windowsMode uint16, inverted bool, baseMode uint16, ansiMode int16) (uint16, bool) {
+	switch ansiMode {
+
+	// Mode styles
+	case ansiterm.ANSI_SGR_BOLD:
+		windowsMode = windowsMode | FOREGROUND_INTENSITY
+
+	case ansiterm.ANSI_SGR_DIM, ansiterm.ANSI_SGR_BOLD_DIM_OFF:
+		windowsMode &^= FOREGROUND_INTENSITY
+
+	case ansiterm.ANSI_SGR_UNDERLINE:
+		windowsMode = windowsMode | COMMON_LVB_UNDERSCORE
+
+	case ansiterm.ANSI_SGR_REVERSE:
+		inverted = true
+
+	case ansiterm.ANSI_SGR_REVERSE_OFF:
+		inverted = false
+
+	case ansiterm.ANSI_SGR_UNDERLINE_OFF:
+		windowsMode &^= COMMON_LVB_UNDERSCORE
+
+		// Foreground colors
+	case ansiterm.ANSI_SGR_FOREGROUND_DEFAULT:
+		windowsMode = (windowsMode &^ FOREGROUND_MASK) | (baseMode & FOREGROUND_MASK)
+
+	case ansiterm.ANSI_SGR_FOREGROUND_BLACK:
+		windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK)
+
+	case ansiterm.ANSI_SGR_FOREGROUND_RED:
+		windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) | FOREGROUND_RED
+
+	case ansiterm.ANSI_SGR_FOREGROUND_GREEN:
+		windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) | FOREGROUND_GREEN
+
+	case ansiterm.ANSI_SGR_FOREGROUND_YELLOW:
+		windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) | FOREGROUND_RED | FOREGROUND_GREEN
+
+	case ansiterm.ANSI_SGR_FOREGROUND_BLUE:
+		windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) | FOREGROUND_BLUE
+
+	case ansiterm.ANSI_SGR_FOREGROUND_MAGENTA:
+		windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) | FOREGROUND_RED | FOREGROUND_BLUE
+
+	case ansiterm.ANSI_SGR_FOREGROUND_CYAN:
+		windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) | FOREGROUND_GREEN | FOREGROUND_BLUE
+
+	case ansiterm.ANSI_SGR_FOREGROUND_WHITE:
+		windowsMode = (windowsMode &^ FOREGROUND_COLOR_MASK) | FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE
+
+		// Background colors
+	case ansiterm.ANSI_SGR_BACKGROUND_DEFAULT:
+		// Black with no intensity
+		windowsMode = (windowsMode &^ BACKGROUND_MASK) | (baseMode & BACKGROUND_MASK)
+
+	case ansiterm.ANSI_SGR_BACKGROUND_BLACK:
+		windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK)
+
+	case ansiterm.ANSI_SGR_BACKGROUND_RED:
+		windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK) | BACKGROUND_RED
+
+	case ansiterm.ANSI_SGR_BACKGROUND_GREEN:
+		windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK) | BACKGROUND_GREEN
+
+	case ansiterm.ANSI_SGR_BACKGROUND_YELLOW:
+		windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK) | BACKGROUND_RED | BACKGROUND_GREEN
+
+	case ansiterm.ANSI_SGR_BACKGROUND_BLUE:
+		windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK) | BACKGROUND_BLUE
+
+	case ansiterm.ANSI_SGR_BACKGROUND_MAGENTA:
+		windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK) | BACKGROUND_RED | BACKGROUND_BLUE
+
+	case ansiterm.ANSI_SGR_BACKGROUND_CYAN:
+		windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK) | BACKGROUND_GREEN | BACKGROUND_BLUE
+
+	case ansiterm.ANSI_SGR_BACKGROUND_WHITE:
+		windowsMode = (windowsMode &^ BACKGROUND_COLOR_MASK) | BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE
+	}
+
+	return windowsMode, inverted
+}
+
+// invertAttributes inverts the foreground and background colors of a Windows attributes value
+func invertAttributes(windowsMode uint16) uint16 {
+	return (COMMON_LVB_MASK & windowsMode) | ((FOREGROUND_MASK & windowsMode) << 4) | ((BACKGROUND_MASK & windowsMode) >> 4)
+}

vendor/github.com/Azure/go-ansiterm/winterm/cursor_helpers.go

@@ -0,0 +1,101 @@
+// +build windows
+
+package winterm
+
+const (
+	horizontal = iota
+	vertical
+)
+
+func (h *windowsAnsiEventHandler) getCursorWindow(info *CONSOLE_SCREEN_BUFFER_INFO) SMALL_RECT {
+	if h.originMode {
+		sr := h.effectiveSr(info.Window)
+		return SMALL_RECT{
+			Top:    sr.top,
+			Bottom: sr.bottom,
+			Left:   0,
+			Right:  info.Size.X - 1,
+		}
+	} else {
+		return SMALL_RECT{
+			Top:    info.Window.Top,
+			Bottom: info.Window.Bottom,
+			Left:   0,
+			Right:  info.Size.X - 1,
+		}
+	}
+}
+
+// setCursorPosition sets the cursor to the specified position, bounded to the screen size
+func (h *windowsAnsiEventHandler) setCursorPosition(position COORD, window SMALL_RECT) error {
+	position.X = ensureInRange(position.X, window.Left, window.Right)
+	position.Y = ensureInRange(position.Y, window.Top, window.Bottom)
+	err := SetConsoleCursorPosition(h.fd, position)
+	if err != nil {
+		return err
+	}
+	logger.Infof("Cursor position set: (%d, %d)", position.X, position.Y)
+	return err
+}
+
+func (h *windowsAnsiEventHandler) moveCursorVertical(param int) error {
+	return h.moveCursor(vertical, param)
+}
+
+func (h *windowsAnsiEventHandler) moveCursorHorizontal(param int) error {
+	return h.moveCursor(horizontal, param)
+}
+
+func (h *windowsAnsiEventHandler) moveCursor(moveMode int, param int) error {
+	info, err := GetConsoleScreenBufferInfo(h.fd)
+	if err != nil {
+		return err
+	}
+
+	position := info.CursorPosition
+	switch moveMode {
+	case horizontal:
+		position.X += int16(param)
+	case vertical:
+		position.Y += int16(param)
+	}
+
+	if err = h.setCursorPosition(position, h.getCursorWindow(info)); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (h *windowsAnsiEventHandler) moveCursorLine(param int) error {
+	info, err := GetConsoleScreenBufferInfo(h.fd)
+	if err != nil {
+		return err
+	}
+
+	position := info.CursorPosition
+	position.X = 0
+	position.Y += int16(param)
+
+	if err = h.setCursorPosition(position, h.getCursorWindow(info)); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (h *windowsAnsiEventHandler) moveCursorColumn(param int) error {
+	info, err := GetConsoleScreenBufferInfo(h.fd)
+	if err != nil {
+		return err
+	}
+
+	position := info.CursorPosition
+	position.X = int16(param) - 1
+
+	if err = h.setCursorPosition(position, h.getCursorWindow(info)); err != nil {
+		return err
+	}
+
+	return nil
+}

vendor/github.com/Azure/go-ansiterm/winterm/erase_helpers.go

@@ -0,0 +1,84 @@
+// +build windows
+
+package winterm
+
+import "github.com/Azure/go-ansiterm"
+
+func (h *windowsAnsiEventHandler) clearRange(attributes uint16, fromCoord COORD, toCoord COORD) error {
+	// Ignore an invalid (negative area) request
+	if toCoord.Y < fromCoord.Y {
+		return nil
+	}
+
+	var err error
+
+	var coordStart = COORD{}
+	var coordEnd = COORD{}
+
+	xCurrent, yCurrent := fromCoord.X, fromCoord.Y
+	xEnd, yEnd := toCoord.X, toCoord.Y
+
+	// Clear any partial initial line
+	if xCurrent > 0 {
+		coordStart.X, coordStart.Y = xCurrent, yCurrent
+		coordEnd.X, coordEnd.Y = xEnd, yCurrent
+
+		err = h.clearRect(attributes, coordStart, coordEnd)
+		if err != nil {
+			return err
+		}
+
+		xCurrent = 0
+		yCurrent += 1
+	}
+
+	// Clear intervening rectangular section
+	if yCurrent < yEnd {
+		coordStart.X, coordStart.Y = xCurrent, yCurrent
+		coordEnd.X, coordEnd.Y = xEnd, yEnd-1
+
+		err = h.clearRect(attributes, coordStart, coordEnd)
+		if err != nil {
+			return err
+		}
+
+		xCurrent = 0
+		yCurrent = yEnd
+	}
+
+	// Clear remaining partial ending line
+	coordStart.X, coordStart.Y = xCurrent, yCurrent
+	coordEnd.X, coordEnd.Y = xEnd, yEnd
+
+	err = h.clearRect(attributes, coordStart, coordEnd)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (h *windowsAnsiEventHandler) clearRect(attributes uint16, fromCoord COORD, toCoord COORD) error {
+	region := SMALL_RECT{Top: fromCoord.Y, Left: fromCoord.X, Bottom: toCoord.Y, Right: toCoord.X}
+	width := toCoord.X - fromCoord.X + 1
+	height := toCoord.Y - fromCoord.Y + 1
+	size := uint32(width) * uint32(height)
+
+	if size <= 0 {
+		return nil
+	}
+
+	buffer := make([]CHAR_INFO, size)
+
+	char := CHAR_INFO{ansiterm.FILL_CHARACTER, attributes}
+	for i := 0; i < int(size); i++ {
+		buffer[i] = char
+	}
+
+	err := WriteConsoleOutput(h.fd, buffer, COORD{X: width, Y: height}, COORD{X: 0, Y: 0}, &region)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}

vendor/github.com/Azure/go-ansiterm/winterm/scroll_helper.go

@@ -0,0 +1,118 @@
+// +build windows
+
+package winterm
+
+// effectiveSr gets the current effective scroll region in buffer coordinates
+func (h *windowsAnsiEventHandler) effectiveSr(window SMALL_RECT) scrollRegion {
+	top := addInRange(window.Top, h.sr.top, window.Top, window.Bottom)
+	bottom := addInRange(window.Top, h.sr.bottom, window.Top, window.Bottom)
+	if top >= bottom {
+		top = window.Top
+		bottom = window.Bottom
+	}
+	return scrollRegion{top: top, bottom: bottom}
+}
+
+func (h *windowsAnsiEventHandler) scrollUp(param int) error {
+	info, err := GetConsoleScreenBufferInfo(h.fd)
+	if err != nil {
+		return err
+	}
+
+	sr := h.effectiveSr(info.Window)
+	return h.scroll(param, sr, info)
+}
+
+func (h *windowsAnsiEventHandler) scrollDown(param int) error {
+	return h.scrollUp(-param)
+}
+
+func (h *windowsAnsiEventHandler) deleteLines(param int) error {
+	info, err := GetConsoleScreenBufferInfo(h.fd)
+	if err != nil {
+		return err
+	}
+
+	start := info.CursorPosition.Y
+	sr := h.effectiveSr(info.Window)
+	// Lines cannot be inserted or deleted outside the scrolling region.
+	if start >= sr.top && start <= sr.bottom {
+		sr.top = start
+		return h.scroll(param, sr, info)
+	} else {
+		return nil
+	}
+}
+
+func (h *windowsAnsiEventHandler) insertLines(param int) error {
+	return h.deleteLines(-param)
+}
+
+// scroll scrolls the provided scroll region by param lines. The scroll region is in buffer coordinates.
+func (h *windowsAnsiEventHandler) scroll(param int, sr scrollRegion, info *CONSOLE_SCREEN_BUFFER_INFO) error {
+	logger.Infof("scroll: scrollTop: %d, scrollBottom: %d", sr.top, sr.bottom)
+	logger.Infof("scroll: windowTop: %d, windowBottom: %d", info.Window.Top, info.Window.Bottom)
+
+	// Copy from and clip to the scroll region (full buffer width)
+	scrollRect := SMALL_RECT{
+		Top:    sr.top,
+		Bottom: sr.bottom,
+		Left:   0,
+		Right:  info.Size.X - 1,
+	}
+
+	// Origin to which area should be copied
+	destOrigin := COORD{
+		X: 0,
+		Y: sr.top - int16(param),
+	}
+
+	char := CHAR_INFO{
+		UnicodeChar: ' ',
+		Attributes:  h.attributes,
+	}
+
+	if err := ScrollConsoleScreenBuffer(h.fd, scrollRect, scrollRect, destOrigin, char); err != nil {
+		return err
+	}
+	return nil
+}
+
+func (h *windowsAnsiEventHandler) deleteCharacters(param int) error {
+	info, err := GetConsoleScreenBufferInfo(h.fd)
+	if err != nil {
+		return err
+	}
+	return h.scrollLine(param, info.CursorPosition, info)
+}
+
+func (h *windowsAnsiEventHandler) insertCharacters(param int) error {
+	return h.deleteCharacters(-param)
+}
+
+// scrollLine scrolls a line horizontally starting at the provided position by a number of columns.
+func (h *windowsAnsiEventHandler) scrollLine(columns int, position COORD, info *CONSOLE_SCREEN_BUFFER_INFO) error {
+	// Copy from and clip to the scroll region (full buffer width)
+	scrollRect := SMALL_RECT{
+		Top:    position.Y,
+		Bottom: position.Y,
+		Left:   position.X,
+		Right:  info.Size.X - 1,
+	}
+
+	// Origin to which area should be copied
+	destOrigin := COORD{
+		X: position.X - int16(columns),
+		Y: position.Y,
+	}
+
+	char := CHAR_INFO{
+		UnicodeChar: ' ',
+		Attributes:  h.attributes,
+	}
+
+	if err := ScrollConsoleScreenBuffer(h.fd, scrollRect, scrollRect, destOrigin, char); err != nil {
+		return err
+	}
+	return nil
+}

vendor/github.com/Azure/go-ansiterm/winterm/utilities.go

@@ -0,0 +1,9 @@
+// +build windows
+
+package winterm
+
+// AddInRange increments a value by the passed quantity while ensuring the values
+// always remain within the supplied min / max range.
+func addInRange(n int16, increment int16, min int16, max int16) int16 {
+	return ensureInRange(n+increment, min, max)
+}

vendor/github.com/Azure/go-ansiterm/winterm/win_event_handler.go

@@ -0,0 +1,726 @@
+// +build windows
+
+package winterm
+
+import (
+	"bytes"
+	"io/ioutil"
+	"os"
+	"strconv"
+
+	"github.com/Azure/go-ansiterm"
+	"github.com/Sirupsen/logrus"
+)
+
+var logger *logrus.Logger
+
+type windowsAnsiEventHandler struct {
+	fd             uintptr
+	file           *os.File
+	infoReset      *CONSOLE_SCREEN_BUFFER_INFO
+	sr             scrollRegion
+	buffer         bytes.Buffer
+	attributes     uint16
+	inverted       bool
+	wrapNext       bool
+	drewMarginByte bool
+	originMode     bool
+	marginByte     byte
+	curInfo        *CONSOLE_SCREEN_BUFFER_INFO
+	curPos         COORD
+}
+
+func CreateWinEventHandler(fd uintptr, file *os.File) ansiterm.AnsiEventHandler {
+	logFile := ioutil.Discard
+
+	if isDebugEnv := os.Getenv(ansiterm.LogEnv); isDebugEnv == "1" {
+		logFile, _ = os.Create("winEventHandler.log")
+	}
+
+	logger = &logrus.Logger{
+		Out:       logFile,
+		Formatter: new(logrus.TextFormatter),
+		Level:     logrus.DebugLevel,
+	}
+
+	infoReset, err := GetConsoleScreenBufferInfo(fd)
+	if err != nil {
+		return nil
+	}
+
+	return &windowsAnsiEventHandler{
+		fd:         fd,
+		file:       file,
+		infoReset:  infoReset,
+		attributes: infoReset.Attributes,
+	}
+}
+
+type scrollRegion struct {
+	top    int16
+	bottom int16
+}
+
+// simulateLF simulates a LF or CR+LF by scrolling if necessary to handle the
+// current cursor position and scroll region settings, in which case it returns
+// true. If no special handling is necessary, then it does nothing and returns
+// false.
+//
+// In the false case, the caller should ensure that a carriage return
+// and line feed are inserted or that the text is otherwise wrapped.
+func (h *windowsAnsiEventHandler) simulateLF(includeCR bool) (bool, error) {
+	if h.wrapNext {
+		if err := h.Flush(); err != nil {
+			return false, err
+		}
+		h.clearWrap()
+	}
+	pos, info, err := h.getCurrentInfo()
+	if err != nil {
+		return false, err
+	}
+	sr := h.effectiveSr(info.Window)
+	if pos.Y == sr.bottom {
+		// Scrolling is necessary. Let Windows automatically scroll if the scrolling region
+		// is the full window.
+		if sr.top == info.Window.Top && sr.bottom == info.Window.Bottom {
+			if includeCR {
+				pos.X = 0
+				h.updatePos(pos)
+			}
+			return false, nil
+		}
+
+		// A custom scroll region is active. Scroll the window manually to simulate
+		// the LF.
+		if err := h.Flush(); err != nil {
+			return false, err
+		}
+		logger.Info("Simulating LF inside scroll region")
+		if err := h.scrollUp(1); err != nil {
+			return false, err
+		}
+		if includeCR {
+			pos.X = 0
+			if err := SetConsoleCursorPosition(h.fd, pos); err != nil {
+				return false, err
+			}
+		}
+		return true, nil
+
+	} else if pos.Y < info.Window.Bottom {
+		// Let Windows handle the LF.
+		pos.Y++
+		if includeCR {
+			pos.X = 0
+		}
+		h.updatePos(pos)
+		return false, nil
+	} else {
+		// The cursor is at the bottom of the screen but outside the scroll
+		// region. Skip the LF.
+		logger.Info("Simulating LF outside scroll region")
+		if includeCR {
+			if err := h.Flush(); err != nil {
+				return false, err
+			}
+			pos.X = 0
+			if err := SetConsoleCursorPosition(h.fd, pos); err != nil {
+				return false, err
+			}
+		}
+		return true, nil
+	}
+}
+
+// executeLF executes a LF without a CR.
+func (h *windowsAnsiEventHandler) executeLF() error {
+	handled, err := h.simulateLF(false)
+	if err != nil {
+		return err
+	}
+	if !handled {
+		// Windows LF will reset the cursor column position. Write the LF
+		// and restore the cursor position.
+		pos, _, err := h.getCurrentInfo()
+		if err != nil {
+			return err
+		}
+		h.buffer.WriteByte(ansiterm.ANSI_LINE_FEED)
+		if pos.X != 0 {
+			if err := h.Flush(); err != nil {
+				return err
+			}
+			logger.Info("Resetting cursor position for LF without CR")
+			if err := SetConsoleCursorPosition(h.fd, pos); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+func (h *windowsAnsiEventHandler) Print(b byte) error {
+	if h.wrapNext {
+		h.buffer.WriteByte(h.marginByte)
+		h.clearWrap()
+		if _, err := h.simulateLF(true); err != nil {
+			return err
+		}
+	}
+	pos, info, err := h.getCurrentInfo()
+	if err != nil {
+		return err
+	}
+	if pos.X == info.Size.X-1 {
+		h.wrapNext = true
+		h.marginByte = b
+	} else {
+		pos.X++
+		h.updatePos(pos)
+		h.buffer.WriteByte(b)
+	}
+	return nil
+}
+
+func (h *windowsAnsiEventHandler) Execute(b byte) error {
+	switch b {
+	case ansiterm.ANSI_TAB:
+		logger.Info("Execute(TAB)")
+		// Move to the next tab stop, but preserve auto-wrap if already set.
+		if !h.wrapNext {
+			pos, info, err := h.getCurrentInfo()
+			if err != nil {
+				return err
+			}
+			pos.X = (pos.X + 8) - pos.X%8
+			if pos.X >= info.Size.X {
+				pos.X = info.Size.X - 1
+			}
+			if err := h.Flush(); err != nil {
+				return err
+			}
+			if err := SetConsoleCursorPosition(h.fd, pos); err != nil {
+				return err
+			}
+		}
+		return nil
+
+	case ansiterm.ANSI_BEL:
+		h.buffer.WriteByte(ansiterm.ANSI_BEL)
+		return nil
+
+	case ansiterm.ANSI_BACKSPACE:
+		if h.wrapNext {
+			if err := h.Flush(); err != nil {
+				return err
+			}
+			h.clearWrap()
+		}
+		pos, _, err := h.getCurrentInfo()
+		if err != nil {
+			return err
+		}
+		if pos.X > 0 {
+			pos.X--
+			h.updatePos(pos)
+			h.buffer.WriteByte(ansiterm.ANSI_BACKSPACE)
+		}
+		return nil
+
+	case ansiterm.ANSI_VERTICAL_TAB, ansiterm.ANSI_FORM_FEED:
+		// Treat as true LF.
+		return h.executeLF()
+
+	case ansiterm.ANSI_LINE_FEED:
+		// Simulate a CR and LF for now since there is no way in go-ansiterm
+		// to tell if the LF should include CR (and more things break when it's
+		// missing than when it's incorrectly added).
+		handled, err := h.simulateLF(true)
+		if handled || err != nil {
+			return err
+		}
+		return h.buffer.WriteByte(ansiterm.ANSI_LINE_FEED)
+
+	case ansiterm.ANSI_CARRIAGE_RETURN:
+		if h.wrapNext {
+			if err := h.Flush(); err != nil {
+				return err
+			}
+			h.clearWrap()
+		}
+		pos, _, err := h.getCurrentInfo()
+		if err != nil {
+			return err
+		}
+		if pos.X != 0 {
+			pos.X = 0
+			h.updatePos(pos)
+			h.buffer.WriteByte(ansiterm.ANSI_CARRIAGE_RETURN)
+		}
+		return nil
+
+	default:
+		return nil
+	}
+}
+
+func (h *windowsAnsiEventHandler) CUU(param int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	logger.Infof("CUU: [%v]", []string{strconv.Itoa(param)})
+	h.clearWrap()
+	return h.moveCursorVertical(-param)
+}
+
+func (h *windowsAnsiEventHandler) CUD(param int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	logger.Infof("CUD: [%v]", []string{strconv.Itoa(param)})
+	h.clearWrap()
+	return h.moveCursorVertical(param)
+}
+
+func (h *windowsAnsiEventHandler) CUF(param int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	logger.Infof("CUF: [%v]", []string{strconv.Itoa(param)})
+	h.clearWrap()
+	return h.moveCursorHorizontal(param)
+}
+
+func (h *windowsAnsiEventHandler) CUB(param int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	logger.Infof("CUB: [%v]", []string{strconv.Itoa(param)})
+	h.clearWrap()
+	return h.moveCursorHorizontal(-param)
+}
+
+func (h *windowsAnsiEventHandler) CNL(param int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	logger.Infof("CNL: [%v]", []string{strconv.Itoa(param)})
+	h.clearWrap()
+	return h.moveCursorLine(param)
+}
+
+func (h *windowsAnsiEventHandler) CPL(param int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	logger.Infof("CPL: [%v]", []string{strconv.Itoa(param)})
+	h.clearWrap()
+	return h.moveCursorLine(-param)
+}
+
+func (h *windowsAnsiEventHandler) CHA(param int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	logger.Infof("CHA: [%v]", []string{strconv.Itoa(param)})
+	h.clearWrap()
+	return h.moveCursorColumn(param)
+}
+
+func (h *windowsAnsiEventHandler) VPA(param int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	logger.Infof("VPA: [[%d]]", param)
+	h.clearWrap()
+	info, err := GetConsoleScreenBufferInfo(h.fd)
+	if err != nil {
+		return err
+	}
+	window := h.getCursorWindow(info)
+	position := info.CursorPosition
+	position.Y = window.Top + int16(param) - 1
+	return h.setCursorPosition(position, window)
+}
+
+func (h *windowsAnsiEventHandler) CUP(row int, col int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	logger.Infof("CUP: [[%d %d]]", row, col)
+	h.clearWrap()
+	info, err := GetConsoleScreenBufferInfo(h.fd)
+	if err != nil {
+		return err
+	}
+
+	window := h.getCursorWindow(info)
+	position := COORD{window.Left + int16(col) - 1, window.Top + int16(row) - 1}
+	return h.setCursorPosition(position, window)
+}
+
+func (h *windowsAnsiEventHandler) HVP(row int, col int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	logger.Infof("HVP: [[%d %d]]", row, col)
+	h.clearWrap()
+	return h.CUP(row, col)
+}
+
+func (h *windowsAnsiEventHandler) DECTCEM(visible bool) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	logger.Infof("DECTCEM: [%v]", []string{strconv.FormatBool(visible)})
+	h.clearWrap()
+	return nil
+}
+
+func (h *windowsAnsiEventHandler) DECOM(enable bool) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	logger.Infof("DECOM: [%v]", []string{strconv.FormatBool(enable)})
+	h.clearWrap()
+	h.originMode = enable
+	return h.CUP(1, 1)
+}
+
+func (h *windowsAnsiEventHandler) DECCOLM(use132 bool) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	logger.Infof("DECCOLM: [%v]", []string{strconv.FormatBool(use132)})
+	h.clearWrap()
+	if err := h.ED(2); err != nil {
+		return err
+	}
+	info, err := GetConsoleScreenBufferInfo(h.fd)
+	if err != nil {
+		return err
+	}
+	targetWidth := int16(80)
+	if use132 {
+		targetWidth = 132
+	}
+	if info.Size.X < targetWidth {
+		if err := SetConsoleScreenBufferSize(h.fd, COORD{targetWidth, info.Size.Y}); err != nil {
+			logger.Info("set buffer failed:", err)
+			return err
+		}
+	}
+	window := info.Window
+	window.Left = 0
+	window.Right = targetWidth - 1
+	if err := SetConsoleWindowInfo(h.fd, true, window); err != nil {
+		logger.Info("set window failed:", err)
+		return err
+	}
+	if info.Size.X > targetWidth {
+		if err := SetConsoleScreenBufferSize(h.fd, COORD{targetWidth, info.Size.Y}); err != nil {
+			logger.Info("set buffer failed:", err)
+			return err
+		}
+	}
+	return SetConsoleCursorPosition(h.fd, COORD{0, 0})
+}
+
+func (h *windowsAnsiEventHandler) ED(param int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	logger.Infof("ED: [%v]", []string{strconv.Itoa(param)})
+	h.clearWrap()
+
+	// [J  -- Erases from the cursor to the end of the screen, including the cursor position.
+	// [1J -- Erases from the beginning of the screen to the cursor, including the cursor position.
+	// [2J -- Erases the complete display. The cursor does not move.
+	// Notes:
+	// -- Clearing the entire buffer, versus just the Window, works best for Windows Consoles
+
+	info, err := GetConsoleScreenBufferInfo(h.fd)
+	if err != nil {
+		return err
+	}
+
+	var start COORD
+	var end COORD
+
+	switch param {
+	case 0:
+		start = info.CursorPosition
+		end = COORD{info.Size.X - 1, info.Size.Y - 1}
+
+	case 1:
+		start = COORD{0, 0}
+		end = info.CursorPosition
+
+	case 2:
+		start = COORD{0, 0}
+		end = COORD{info.Size.X - 1, info.Size.Y - 1}
+	}
+
+	err = h.clearRange(h.attributes, start, end)
+	if err != nil {
+		return err
+	}
+
+	// If the whole buffer was cleared, move the window to the top while preserving
+	// the window-relative cursor position.
+	if param == 2 {
+		pos := info.CursorPosition
+		window := info.Window
+		pos.Y -= window.Top
+		window.Bottom -= window.Top
+		window.Top = 0
+		if err := SetConsoleCursorPosition(h.fd, pos); err != nil {
+			return err
+		}
+		if err := SetConsoleWindowInfo(h.fd, true, window); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (h *windowsAnsiEventHandler) EL(param int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	logger.Infof("EL: [%v]", strconv.Itoa(param))
+	h.clearWrap()
+
+	// [K  -- Erases from the cursor to the end of the line, including the cursor position.
+	// [1K -- Erases from the beginning of the line to the cursor, including the cursor position.
+	// [2K -- Erases the complete line.
+
+	info, err := GetConsoleScreenBufferInfo(h.fd)
+	if err != nil {
+		return err
+	}
+
+	var start COORD
+	var end COORD
+
+	switch param {
+	case 0:
+		start = info.CursorPosition
+		end = COORD{info.Size.X, info.CursorPosition.Y}
+
+	case 1:
+		start = COORD{0, info.CursorPosition.Y}
+		end = info.CursorPosition
+
+	case 2:
+		start = COORD{0, info.CursorPosition.Y}
+		end = COORD{info.Size.X, info.CursorPosition.Y}
+	}
+
+	err = h.clearRange(h.attributes, start, end)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (h *windowsAnsiEventHandler) IL(param int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	logger.Infof("IL: [%v]", strconv.Itoa(param))
+	h.clearWrap()
+	return h.insertLines(param)
+}
+
+func (h *windowsAnsiEventHandler) DL(param int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	logger.Infof("DL: [%v]", strconv.Itoa(param))
+	h.clearWrap()
+	return h.deleteLines(param)
+}
+
+func (h *windowsAnsiEventHandler) ICH(param int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	logger.Infof("ICH: [%v]", strconv.Itoa(param))
+	h.clearWrap()
+	return h.insertCharacters(param)
+}
+
+func (h *windowsAnsiEventHandler) DCH(param int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	logger.Infof("DCH: [%v]", strconv.Itoa(param))
+	h.clearWrap()
+	return h.deleteCharacters(param)
+}
+
+func (h *windowsAnsiEventHandler) SGR(params []int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	strings := []string{}
+	for _, v := range params {
+		strings = append(strings, strconv.Itoa(v))
+	}
+
+	logger.Infof("SGR: [%v]", strings)
+
+	if len(params) <= 0 {
+		h.attributes = h.infoReset.Attributes
+		h.inverted = false
+	} else {
+		for _, attr := range params {
+
+			if attr == ansiterm.ANSI_SGR_RESET {
+				h.attributes = h.infoReset.Attributes
+				h.inverted = false
+				continue
+			}
+
+			h.attributes, h.inverted = collectAnsiIntoWindowsAttributes(h.attributes, h.inverted, h.infoReset.Attributes, int16(attr))
+		}
+	}
+
+	attributes := h.attributes
+	if h.inverted {
+		attributes = invertAttributes(attributes)
+	}
+	err := SetConsoleTextAttribute(h.fd, attributes)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (h *windowsAnsiEventHandler) SU(param int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	logger.Infof("SU: [%v]", []string{strconv.Itoa(param)})
+	h.clearWrap()
+	return h.scrollUp(param)
+}
+
+func (h *windowsAnsiEventHandler) SD(param int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	logger.Infof("SD: [%v]", []string{strconv.Itoa(param)})
+	h.clearWrap()
+	return h.scrollDown(param)
+}
+
+func (h *windowsAnsiEventHandler) DA(params []string) error {
+	logger.Infof("DA: [%v]", params)
+	// DA cannot be implemented because it must send data on the VT100 input stream,
+	// which is not available to go-ansiterm.
+	return nil
+}
+
+func (h *windowsAnsiEventHandler) DECSTBM(top int, bottom int) error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	logger.Infof("DECSTBM: [%d, %d]", top, bottom)
+
+	// Windows is 0 indexed, Linux is 1 indexed
+	h.sr.top = int16(top - 1)
+	h.sr.bottom = int16(bottom - 1)
+
+	// This command also moves the cursor to the origin.
+	h.clearWrap()
+	return h.CUP(1, 1)
+}
+
+func (h *windowsAnsiEventHandler) RI() error {
+	if err := h.Flush(); err != nil {
+		return err
+	}
+	logger.Info("RI: []")
+	h.clearWrap()
+
+	info, err := GetConsoleScreenBufferInfo(h.fd)
+	if err != nil {
+		return err
+	}
+
+	sr := h.effectiveSr(info.Window)
+	if info.CursorPosition.Y == sr.top {
+		return h.scrollDown(1)
+	}
+
+	return h.moveCursorVertical(-1)
+}
+
+func (h *windowsAnsiEventHandler) IND() error {
+	logger.Info("IND: []")
+	return h.executeLF()
+}
+
+func (h *windowsAnsiEventHandler) Flush() error {
+	h.curInfo = nil
+	if h.buffer.Len() > 0 {
+		logger.Infof("Flush: [%s]", h.buffer.Bytes())
+		if _, err := h.buffer.WriteTo(h.file); err != nil {
+			return err
+		}
+	}
+
+	if h.wrapNext && !h.drewMarginByte {
+		logger.Infof("Flush: drawing margin byte '%c'", h.marginByte)
+
+		info, err := GetConsoleScreenBufferInfo(h.fd)
+		if err != nil {
+			return err
+		}
+
+		charInfo := []CHAR_INFO{{UnicodeChar: uint16(h.marginByte), Attributes: info.Attributes}}
+		size := COORD{1, 1}
+		position := COORD{0, 0}
+		region := SMALL_RECT{Left: info.CursorPosition.X, Top: info.CursorPosition.Y, Right: info.CursorPosition.X, Bottom: info.CursorPosition.Y}
+		if err := WriteConsoleOutput(h.fd, charInfo, size, position, &region); err != nil {
+			return err
+		}
+		h.drewMarginByte = true
+	}
+	return nil
+}
+
+// cacheConsoleInfo ensures that the current console screen information has been queried
+// since the last call to Flush(). It must be called before accessing h.curInfo or h.curPos.
+func (h *windowsAnsiEventHandler) getCurrentInfo() (COORD, *CONSOLE_SCREEN_BUFFER_INFO, error) {
+	if h.curInfo == nil {
+		info, err := GetConsoleScreenBufferInfo(h.fd)
+		if err != nil {
+			return COORD{}, nil, err
+		}
+		h.curInfo = info
+		h.curPos = info.CursorPosition
+	}
+	return h.curPos, h.curInfo, nil
+}
+
+func (h *windowsAnsiEventHandler) updatePos(pos COORD) {
+	if h.curInfo == nil {
+		panic("failed to call getCurrentInfo before calling updatePos")
+	}
+	h.curPos = pos
+}
+
+// clearWrap clears the state where the cursor is in the margin
+// waiting for the next character before wrapping the line. This must
+// be done before most operations that act on the cursor.
+func (h *windowsAnsiEventHandler) clearWrap() {
+	h.wrapNext = false
+	h.drewMarginByte = false
+}

vendor/github.com/PuerkitoBio/purell/.gitignore

@@ -0,0 +1,5 @@
+*.sublime-*
+.DS_Store
+*.swp
+*.swo
+tags

vendor/github.com/PuerkitoBio/purell/.travis.yml

@@ -0,0 +1,7 @@
+language: go
+
+go:
+    - 1.4
+    - 1.5
+    - 1.6
+    - tip

vendor/github.com/PuerkitoBio/purell/LICENSE

@@ -0,0 +1,12 @@
+Copyright (c) 2012, Martin Angers
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+
+* Neither the name of the author nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

vendor/github.com/PuerkitoBio/purell/README.md

@@ -0,0 +1,187 @@
+# Purell
+
+Purell is a tiny Go library to normalize URLs. It returns a pure URL. Pure-ell. Sanitizer and all. Yeah, I know...
+
+Based on the [wikipedia paper][wiki] and the [RFC 3986 document][rfc].
+
+[![build status](https://secure.travis-ci.org/PuerkitoBio/purell.png)](http://travis-ci.org/PuerkitoBio/purell)
+
+## Install
+
+`go get github.com/PuerkitoBio/purell`
+
+## Changelog
+
+*    **2016-11-14 (v1.1.0)** : IDN: Conform to RFC 5895: Fold character width (thanks to @beeker1121).
+*    **2016-07-27 (v1.0.0)** : Normalize IDN to ASCII (thanks to @zenovich).
+*    **2015-02-08** : Add fix for relative paths issue ([PR #5][pr5]) and add fix for unnecessary encoding of reserved characters ([see issue #7][iss7]).
+*    **v0.2.0** : Add benchmarks, Attempt IDN support.
+*    **v0.1.0** : Initial release.
+
+## Examples
+
+From `example_test.go` (note that in your code, you would import "github.com/PuerkitoBio/purell", and would prefix references to its methods and constants with "purell."):
+
+```go
+package purell
+
+import (
+  "fmt"
+  "net/url"
+)
+
+func ExampleNormalizeURLString() {
+  if normalized, err := NormalizeURLString("hTTp://someWEBsite.com:80/Amazing%3f/url/",
+    FlagLowercaseScheme|FlagLowercaseHost|FlagUppercaseEscapes); err != nil {
+    panic(err)
+  } else {
+    fmt.Print(normalized)
+  }
+  // Output: http://somewebsite.com:80/Amazing%3F/url/
+}
+
+func ExampleMustNormalizeURLString() {
+  normalized := MustNormalizeURLString("hTTpS://someWEBsite.com:443/Amazing%fa/url/",
+    FlagsUnsafeGreedy)
+  fmt.Print(normalized)
+
+  // Output: http://somewebsite.com/Amazing%FA/url
+}
+
+func ExampleNormalizeURL() {
+  if u, err := url.Parse("Http://SomeUrl.com:8080/a/b/.././c///g?c=3&a=1&b=9&c=0#target"); err != nil {
+    panic(err)
+  } else {
+    normalized := NormalizeURL(u, FlagsUsuallySafeGreedy|FlagRemoveDuplicateSlashes|FlagRemoveFragment)
+    fmt.Print(normalized)
+  }
+
+  // Output: http://someurl.com:8080/a/c/g?c=3&a=1&b=9&c=0
+}
+```
+
+## API
+
+As seen in the examples above, purell offers three methods, `NormalizeURLString(string, NormalizationFlags) (string, error)`, `MustNormalizeURLString(string, NormalizationFlags) (string)` and `NormalizeURL(*url.URL, NormalizationFlags) (string)`. They all normalize the provided URL based on the specified flags. Here are the available flags:
+
+```go
+const (
+	// Safe normalizations
+	FlagLowercaseScheme           NormalizationFlags = 1 << iota // HTTP://host -> http://host, applied by default in Go1.1
+	FlagLowercaseHost                                            // http://HOST -> http://host
+	FlagUppercaseEscapes                                         // http://host/t%ef -> http://host/t%EF
+	FlagDecodeUnnecessaryEscapes                                 // http://host/t%41 -> http://host/tA
+	FlagEncodeNecessaryEscapes                                   // http://host/!"#$ -> http://host/%21%22#$
+	FlagRemoveDefaultPort                                        // http://host:80 -> http://host
+	FlagRemoveEmptyQuerySeparator                                // http://host/path? -> http://host/path
+
+	// Usually safe normalizations
+	FlagRemoveTrailingSlash // http://host/path/ -> http://host/path
+	FlagAddTrailingSlash    // http://host/path -> http://host/path/ (should choose only one of these add/remove trailing slash flags)
+	FlagRemoveDotSegments   // http://host/path/./a/b/../c -> http://host/path/a/c
+
+	// Unsafe normalizations
+	FlagRemoveDirectoryIndex   // http://host/path/index.html -> http://host/path/
+	FlagRemoveFragment         // http://host/path#fragment -> http://host/path
+	FlagForceHTTP              // https://host -> http://host
+	FlagRemoveDuplicateSlashes // http://host/path//a///b -> http://host/path/a/b
+	FlagRemoveWWW              // http://www.host/ -> http://host/
+	FlagAddWWW                 // http://host/ -> http://www.host/ (should choose only one of these add/remove WWW flags)
+	FlagSortQuery              // http://host/path?c=3&b=2&a=1&b=1 -> http://host/path?a=1&b=1&b=2&c=3
+
+	// Normalizations not in the wikipedia article, required to cover tests cases
+	// submitted by jehiah
+	FlagDecodeDWORDHost           // http://1113982867 -> http://66.102.7.147
+	FlagDecodeOctalHost           // http://0102.0146.07.0223 -> http://66.102.7.147
+	FlagDecodeHexHost             // http://0x42660793 -> http://66.102.7.147
+	FlagRemoveUnnecessaryHostDots // http://.host../path -> http://host/path
+	FlagRemoveEmptyPortSeparator  // http://host:/path -> http://host/path
+
+	// Convenience set of safe normalizations
+	FlagsSafe NormalizationFlags = FlagLowercaseHost | FlagLowercaseScheme | FlagUppercaseEscapes | FlagDecodeUnnecessaryEscapes | FlagEncodeNecessaryEscapes | FlagRemoveDefaultPort | FlagRemoveEmptyQuerySeparator
+
+	// For convenience sets, "greedy" uses the "remove trailing slash" and "remove www. prefix" flags,
+	// while "non-greedy" uses the "add (or keep) the trailing slash" and "add www. prefix".
+
+	// Convenience set of usually safe normalizations (includes FlagsSafe)
+	FlagsUsuallySafeGreedy    NormalizationFlags = FlagsSafe | FlagRemoveTrailingSlash | FlagRemoveDotSegments
+	FlagsUsuallySafeNonGreedy NormalizationFlags = FlagsSafe | FlagAddTrailingSlash | FlagRemoveDotSegments
+
+	// Convenience set of unsafe normalizations (includes FlagsUsuallySafe)
+	FlagsUnsafeGreedy    NormalizationFlags = FlagsUsuallySafeGreedy | FlagRemoveDirectoryIndex | FlagRemoveFragment | FlagForceHTTP | FlagRemoveDuplicateSlashes | FlagRemoveWWW | FlagSortQuery
+	FlagsUnsafeNonGreedy NormalizationFlags = FlagsUsuallySafeNonGreedy | FlagRemoveDirectoryIndex | FlagRemoveFragment | FlagForceHTTP | FlagRemoveDuplicateSlashes | FlagAddWWW | FlagSortQuery
+
+	// Convenience set of all available flags
+	FlagsAllGreedy    = FlagsUnsafeGreedy | FlagDecodeDWORDHost | FlagDecodeOctalHost | FlagDecodeHexHost | FlagRemoveUnnecessaryHostDots | FlagRemoveEmptyPortSeparator
+	FlagsAllNonGreedy = FlagsUnsafeNonGreedy | FlagDecodeDWORDHost | FlagDecodeOctalHost | FlagDecodeHexHost | FlagRemoveUnnecessaryHostDots | FlagRemoveEmptyPortSeparator
+)
+```
+
+For convenience, the set of flags `FlagsSafe`, `FlagsUsuallySafe[Greedy|NonGreedy]`, `FlagsUnsafe[Greedy|NonGreedy]` and `FlagsAll[Greedy|NonGreedy]` are provided for the similarly grouped normalizations on [wikipedia's URL normalization page][wiki]. You can add (using the bitwise OR `|` operator) or remove (using the bitwise AND NOT `&^` operator) individual flags from the sets if required, to build your own custom set.
+
+The [full godoc reference is available on gopkgdoc][godoc].
+
+Some things to note:
+
+*    `FlagDecodeUnnecessaryEscapes`, `FlagEncodeNecessaryEscapes`, `FlagUppercaseEscapes` and `FlagRemoveEmptyQuerySeparator` are always implicitly set, because internally, the URL string is parsed as an URL object, which automatically decodes unnecessary escapes, uppercases and encodes necessary ones, and removes empty query separators (an unnecessary `?` at the end of the url). So this operation cannot **not** be done. For this reason, `FlagRemoveEmptyQuerySeparator` (as well as the other three) has been included in the `FlagsSafe` convenience set, instead of `FlagsUnsafe`, where Wikipedia puts it.
+
+*    The `FlagDecodeUnnecessaryEscapes` decodes the following escapes (*from -> to*):
+    -    %24 -> $
+    -    %26 -> &
+    -    %2B-%3B -> +,-./0123456789:;
+    -    %3D -> =
+    -    %40-%5A -> @ABCDEFGHIJKLMNOPQRSTUVWXYZ
+    -    %5F -> _
+    -    %61-%7A -> abcdefghijklmnopqrstuvwxyz
+    -    %7E -> ~
+
+
+*    When the `NormalizeURL` function is used (passing an URL object), this source URL object is modified (that is, after the call, the URL object will be modified to reflect the normalization).
+
+*    The *replace IP with domain name* normalization (`http://208.77.188.166/ → http://www.example.com/`) is obviously not possible for a library without making some network requests. This is not implemented in purell.
+
+*    The *remove unused query string parameters* and *remove default query parameters* are also not implemented, since this is a very case-specific normalization, and it is quite trivial to do with an URL object.
+
+### Safe vs Usually Safe vs Unsafe
+
+Purell allows you to control the level of risk you take while normalizing an URL. You can aggressively normalize, play it totally safe, or anything in between.
+
+Consider the following URL:
+
+`HTTPS://www.RooT.com/toto/t%45%1f///a/./b/../c/?z=3&w=2&a=4&w=1#invalid`
+
+Normalizing with the `FlagsSafe` gives:
+
+`https://www.root.com/toto/tE%1F///a/./b/../c/?z=3&w=2&a=4&w=1#invalid`
+
+With the `FlagsUsuallySafeGreedy`:
+
+`https://www.root.com/toto/tE%1F///a/c?z=3&w=2&a=4&w=1#invalid`
+
+And with `FlagsUnsafeGreedy`:
+
+`http://root.com/toto/tE%1F/a/c?a=4&w=1&w=2&z=3`
+
+## TODOs
+
+*    Add a class/default instance to allow specifying custom directory index names? At the moment, removing directory index removes `(^|/)((?:default|index)\.\w{1,4})$`.
+
+## Thanks / Contributions
+
+@rogpeppe
+@jehiah
+@opennota
+@pchristopher1275
+@zenovich
+@beeker1121
+
+## License
+
+The [BSD 3-Clause license][bsd].
+
+[bsd]: http://opensource.org/licenses/BSD-3-Clause
+[wiki]: http://en.wikipedia.org/wiki/URL_normalization
+[rfc]: http://tools.ietf.org/html/rfc3986#section-6
+[godoc]: http://go.pkgdoc.org/github.com/PuerkitoBio/purell
+[pr5]: https://github.com/PuerkitoBio/purell/pull/5
+[iss7]: https://github.com/PuerkitoBio/purell/issues/7

vendor/github.com/PuerkitoBio/purell/bench_test.go

@@ -0,0 +1,57 @@
+package purell
+
+import (
+	"testing"
+)
+
+var (
+	safeUrl        = "HttPS://..iaMHost..Test:443/paTh^A%ef//./%41PaTH/..//?"
+	usuallySafeUrl = "HttPS://..iaMHost..Test:443/paTh^A%ef//./%41PaTH/../final/"
+	unsafeUrl      = "HttPS://..www.iaMHost..Test:443/paTh^A%ef//./%41PaTH/../final/index.html?t=val1&a=val4&z=val5&a=val1#fragment"
+	allDWORDUrl    = "HttPS://1113982867:/paTh^A%ef//./%41PaTH/../final/index.html?t=val1&a=val4&z=val5&a=val1#fragment"
+	allOctalUrl    = "HttPS://0102.0146.07.0223:/paTh^A%ef//./%41PaTH/../final/index.html?t=val1&a=val4&z=val5&a=val1#fragment"
+	allHexUrl      = "HttPS://0x42660793:/paTh^A%ef//./%41PaTH/../final/index.html?t=val1&a=val4&z=val5&a=val1#fragment"
+	allCombinedUrl = "HttPS://..0x42660793.:/paTh^A%ef//./%41PaTH/../final/index.html?t=val1&a=val4&z=val5&a=val1#fragment"
+)
+
+func BenchmarkSafe(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		NormalizeURLString(safeUrl, FlagsSafe)
+	}
+}
+
+func BenchmarkUsuallySafe(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		NormalizeURLString(usuallySafeUrl, FlagsUsuallySafeGreedy)
+	}
+}
+
+func BenchmarkUnsafe(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		NormalizeURLString(unsafeUrl, FlagsUnsafeGreedy)
+	}
+}
+
+func BenchmarkAllDWORD(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		NormalizeURLString(allDWORDUrl, FlagsAllGreedy)
+	}
+}
+
+func BenchmarkAllOctal(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		NormalizeURLString(allOctalUrl, FlagsAllGreedy)
+	}
+}
+
+func BenchmarkAllHex(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		NormalizeURLString(allHexUrl, FlagsAllGreedy)
+	}
+}
+
+func BenchmarkAllCombined(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		NormalizeURLString(allCombinedUrl, FlagsAllGreedy)
+	}
+}

vendor/github.com/PuerkitoBio/purell/benchmarks/v0.1.0

@@ -0,0 +1,9 @@
+PASS
+BenchmarkSafe	  500000	      6131 ns/op
+BenchmarkUsuallySafe	  200000	      7864 ns/op
+BenchmarkUnsafe	  100000	     28560 ns/op
+BenchmarkAllDWORD	   50000	     38722 ns/op
+BenchmarkAllOctal	   50000	     40941 ns/op
+BenchmarkAllHex	   50000	     44063 ns/op
+BenchmarkAllCombined	   50000	     33613 ns/op
+ok  	github.com/PuerkitoBio/purell	17.404s

vendor/github.com/PuerkitoBio/purell/example_test.go

@@ -0,0 +1,35 @@
+package purell
+
+import (
+	"fmt"
+	"net/url"
+)
+
+func ExampleNormalizeURLString() {
+	if normalized, err := NormalizeURLString("hTTp://someWEBsite.com:80/Amazing%3f/url/",
+		FlagLowercaseScheme|FlagLowercaseHost|FlagUppercaseEscapes); err != nil {
+		panic(err)
+	} else {
+		fmt.Print(normalized)
+	}
+	// Output: http://somewebsite.com:80/Amazing%3F/url/
+}
+
+func ExampleMustNormalizeURLString() {
+	normalized := MustNormalizeURLString("hTTpS://someWEBsite.com:443/Amazing%fa/url/",
+		FlagsUnsafeGreedy)
+	fmt.Print(normalized)
+
+	// Output: http://somewebsite.com/Amazing%FA/url
+}
+
+func ExampleNormalizeURL() {
+	if u, err := url.Parse("Http://SomeUrl.com:8080/a/b/.././c///g?c=3&a=1&b=9&c=0#target"); err != nil {
+		panic(err)
+	} else {
+		normalized := NormalizeURL(u, FlagsUsuallySafeGreedy|FlagRemoveDuplicateSlashes|FlagRemoveFragment)
+		fmt.Print(normalized)
+	}
+
+	// Output: http://someurl.com:8080/a/c/g?c=3&a=1&b=9&c=0
+}

vendor/github.com/PuerkitoBio/purell/purell.go

@@ -0,0 +1,379 @@
+/*
+Package purell offers URL normalization as described on the wikipedia page:
+http://en.wikipedia.org/wiki/URL_normalization
+*/
+package purell
+
+import (
+	"bytes"
+	"fmt"
+	"net/url"
+	"regexp"
+	"sort"
+	"strconv"
+	"strings"
+
+	"github.com/PuerkitoBio/urlesc"
+	"golang.org/x/net/idna"
+	"golang.org/x/text/unicode/norm"
+	"golang.org/x/text/width"
+)
+
+// A set of normalization flags determines how a URL will
+// be normalized.
+type NormalizationFlags uint
+
+const (
+	// Safe normalizations
+	FlagLowercaseScheme           NormalizationFlags = 1 << iota // HTTP://host -> http://host, applied by default in Go1.1
+	FlagLowercaseHost                                            // http://HOST -> http://host
+	FlagUppercaseEscapes                                         // http://host/t%ef -> http://host/t%EF
+	FlagDecodeUnnecessaryEscapes                                 // http://host/t%41 -> http://host/tA
+	FlagEncodeNecessaryEscapes                                   // http://host/!"#$ -> http://host/%21%22#$
+	FlagRemoveDefaultPort                                        // http://host:80 -> http://host
+	FlagRemoveEmptyQuerySeparator                                // http://host/path? -> http://host/path
+
+	// Usually safe normalizations
+	FlagRemoveTrailingSlash // http://host/path/ -> http://host/path
+	FlagAddTrailingSlash    // http://host/path -> http://host/path/ (should choose only one of these add/remove trailing slash flags)
+	FlagRemoveDotSegments   // http://host/path/./a/b/../c -> http://host/path/a/c
+
+	// Unsafe normalizations
+	FlagRemoveDirectoryIndex   // http://host/path/index.html -> http://host/path/
+	FlagRemoveFragment         // http://host/path#fragment -> http://host/path
+	FlagForceHTTP              // https://host -> http://host
+	FlagRemoveDuplicateSlashes // http://host/path//a///b -> http://host/path/a/b
+	FlagRemoveWWW              // http://www.host/ -> http://host/
+	FlagAddWWW                 // http://host/ -> http://www.host/ (should choose only one of these add/remove WWW flags)
+	FlagSortQuery              // http://host/path?c=3&b=2&a=1&b=1 -> http://host/path?a=1&b=1&b=2&c=3
+
+	// Normalizations not in the wikipedia article, required to cover tests cases
+	// submitted by jehiah
+	FlagDecodeDWORDHost           // http://1113982867 -> http://66.102.7.147
+	FlagDecodeOctalHost           // http://0102.0146.07.0223 -> http://66.102.7.147
+	FlagDecodeHexHost             // http://0x42660793 -> http://66.102.7.147
+	FlagRemoveUnnecessaryHostDots // http://.host../path -> http://host/path
+	FlagRemoveEmptyPortSeparator  // http://host:/path -> http://host/path
+
+	// Convenience set of safe normalizations
+	FlagsSafe NormalizationFlags = FlagLowercaseHost | FlagLowercaseScheme | FlagUppercaseEscapes | FlagDecodeUnnecessaryEscapes | FlagEncodeNecessaryEscapes | FlagRemoveDefaultPort | FlagRemoveEmptyQuerySeparator
+
+	// For convenience sets, "greedy" uses the "remove trailing slash" and "remove www. prefix" flags,
+	// while "non-greedy" uses the "add (or keep) the trailing slash" and "add www. prefix".
+
+	// Convenience set of usually safe normalizations (includes FlagsSafe)
+	FlagsUsuallySafeGreedy    NormalizationFlags = FlagsSafe | FlagRemoveTrailingSlash | FlagRemoveDotSegments
+	FlagsUsuallySafeNonGreedy NormalizationFlags = FlagsSafe | FlagAddTrailingSlash | FlagRemoveDotSegments
+
+	// Convenience set of unsafe normalizations (includes FlagsUsuallySafe)
+	FlagsUnsafeGreedy    NormalizationFlags = FlagsUsuallySafeGreedy | FlagRemoveDirectoryIndex | FlagRemoveFragment | FlagForceHTTP | FlagRemoveDuplicateSlashes | FlagRemoveWWW | FlagSortQuery
+	FlagsUnsafeNonGreedy NormalizationFlags = FlagsUsuallySafeNonGreedy | FlagRemoveDirectoryIndex | FlagRemoveFragment | FlagForceHTTP | FlagRemoveDuplicateSlashes | FlagAddWWW | FlagSortQuery
+
+	// Convenience set of all available flags
+	FlagsAllGreedy    = FlagsUnsafeGreedy | FlagDecodeDWORDHost | FlagDecodeOctalHost | FlagDecodeHexHost | FlagRemoveUnnecessaryHostDots | FlagRemoveEmptyPortSeparator
+	FlagsAllNonGreedy = FlagsUnsafeNonGreedy | FlagDecodeDWORDHost | FlagDecodeOctalHost | FlagDecodeHexHost | FlagRemoveUnnecessaryHostDots | FlagRemoveEmptyPortSeparator
+)
+
+const (
+	defaultHttpPort  = ":80"
+	defaultHttpsPort = ":443"
+)
+
+// Regular expressions used by the normalizations
+var rxPort = regexp.MustCompile(`(:\d+)/?$`)
+var rxDirIndex = regexp.MustCompile(`(^|/)((?:default|index)\.\w{1,4})$`)
+var rxDupSlashes = regexp.MustCompile(`/{2,}`)
+var rxDWORDHost = regexp.MustCompile(`^(\d+)((?:\.+)?(?:\:\d*)?)$`)
+var rxOctalHost = regexp.MustCompile(`^(0\d*)\.(0\d*)\.(0\d*)\.(0\d*)((?:\.+)?(?:\:\d*)?)$`)
+var rxHexHost = regexp.MustCompile(`^0x([0-9A-Fa-f]+)((?:\.+)?(?:\:\d*)?)$`)
+var rxHostDots = regexp.MustCompile(`^(.+?)(:\d+)?$`)
+var rxEmptyPort = regexp.MustCompile(`:+$`)
+
+// Map of flags to implementation function.
+// FlagDecodeUnnecessaryEscapes has no action, since it is done automatically
+// by parsing the string as an URL. Same for FlagUppercaseEscapes and FlagRemoveEmptyQuerySeparator.
+
+// Since maps have undefined traversing order, make a slice of ordered keys
+var flagsOrder = []NormalizationFlags{
+	FlagLowercaseScheme,
+	FlagLowercaseHost,
+	FlagRemoveDefaultPort,
+	FlagRemoveDirectoryIndex,
+	FlagRemoveDotSegments,
+	FlagRemoveFragment,
+	FlagForceHTTP, // Must be after remove default port (because https=443/http=80)
+	FlagRemoveDuplicateSlashes,
+	FlagRemoveWWW,
+	FlagAddWWW,
+	FlagSortQuery,
+	FlagDecodeDWORDHost,
+	FlagDecodeOctalHost,
+	FlagDecodeHexHost,
+	FlagRemoveUnnecessaryHostDots,
+	FlagRemoveEmptyPortSeparator,
+	FlagRemoveTrailingSlash, // These two (add/remove trailing slash) must be last
+	FlagAddTrailingSlash,
+}
+
+// ... and then the map, where order is unimportant
+var flags = map[NormalizationFlags]func(*url.URL){
+	FlagLowercaseScheme:           lowercaseScheme,
+	FlagLowercaseHost:             lowercaseHost,
+	FlagRemoveDefaultPort:         removeDefaultPort,
+	FlagRemoveDirectoryIndex:      removeDirectoryIndex,
+	FlagRemoveDotSegments:         removeDotSegments,
+	FlagRemoveFragment:            removeFragment,
+	FlagForceHTTP:                 forceHTTP,
+	FlagRemoveDuplicateSlashes:    removeDuplicateSlashes,
+	FlagRemoveWWW:                 removeWWW,
+	FlagAddWWW:                    addWWW,
+	FlagSortQuery:                 sortQuery,
+	FlagDecodeDWORDHost:           decodeDWORDHost,
+	FlagDecodeOctalHost:           decodeOctalHost,
+	FlagDecodeHexHost:             decodeHexHost,
+	FlagRemoveUnnecessaryHostDots: removeUnncessaryHostDots,
+	FlagRemoveEmptyPortSeparator:  removeEmptyPortSeparator,
+	FlagRemoveTrailingSlash:       removeTrailingSlash,
+	FlagAddTrailingSlash:          addTrailingSlash,
+}
+
+// MustNormalizeURLString returns the normalized string, and panics if an error occurs.
+// It takes an URL string as input, as well as the normalization flags.
+func MustNormalizeURLString(u string, f NormalizationFlags) string {
+	result, e := NormalizeURLString(u, f)
+	if e != nil {
+		panic(e)
+	}
+	return result
+}
+
+// NormalizeURLString returns the normalized string, or an error if it can't be parsed into an URL object.
+// It takes an URL string as input, as well as the normalization flags.
+func NormalizeURLString(u string, f NormalizationFlags) (string, error) {
+	parsed, err := url.Parse(u)
+	if err != nil {
+		return "", err
+	}
+
+	if f&FlagLowercaseHost == FlagLowercaseHost {
+		parsed.Host = strings.ToLower(parsed.Host)
+	}
+
+	// The idna package doesn't fully conform to RFC 5895
+	// (https://tools.ietf.org/html/rfc5895), so we do it here.
+	// Taken from Go 1.8 cycle source, courtesy of bradfitz.
+	// TODO: Remove when (if?) idna package conforms to RFC 5895.
+	parsed.Host = width.Fold.String(parsed.Host)
+	parsed.Host = norm.NFC.String(parsed.Host)
+	if parsed.Host, err = idna.ToASCII(parsed.Host); err != nil {
+		return "", err
+	}
+
+	return NormalizeURL(parsed, f), nil
+}
+
+// NormalizeURL returns the normalized string.
+// It takes a parsed URL object as input, as well as the normalization flags.
+func NormalizeURL(u *url.URL, f NormalizationFlags) string {
+	for _, k := range flagsOrder {
+		if f&k == k {
+			flags[k](u)
+		}
+	}
+	return urlesc.Escape(u)
+}
+
+func lowercaseScheme(u *url.URL) {
+	if len(u.Scheme) > 0 {
+		u.Scheme = strings.ToLower(u.Scheme)
+	}
+}
+
+func lowercaseHost(u *url.URL) {
+	if len(u.Host) > 0 {
+		u.Host = strings.ToLower(u.Host)
+	}
+}
+
+func removeDefaultPort(u *url.URL) {
+	if len(u.Host) > 0 {
+		scheme := strings.ToLower(u.Scheme)
+		u.Host = rxPort.ReplaceAllStringFunc(u.Host, func(val string) string {
+			if (scheme == "http" && val == defaultHttpPort) || (scheme == "https" && val == defaultHttpsPort) {
+				return ""
+			}
+			return val
+		})
+	}
+}
+
+func removeTrailingSlash(u *url.URL) {
+	if l := len(u.Path); l > 0 {
+		if strings.HasSuffix(u.Path, "/") {
+			u.Path = u.Path[:l-1]
+		}
+	} else if l = len(u.Host); l > 0 {
+		if strings.HasSuffix(u.Host, "/") {
+			u.Host = u.Host[:l-1]
+		}
+	}
+}
+
+func addTrailingSlash(u *url.URL) {
+	if l := len(u.Path); l > 0 {
+		if !strings.HasSuffix(u.Path, "/") {
+			u.Path += "/"
+		}
+	} else if l = len(u.Host); l > 0 {
+		if !strings.HasSuffix(u.Host, "/") {
+			u.Host += "/"
+		}
+	}
+}
+
+func removeDotSegments(u *url.URL) {
+	if len(u.Path) > 0 {
+		var dotFree []string
+		var lastIsDot bool
+
+		sections := strings.Split(u.Path, "/")
+		for _, s := range sections {
+			if s == ".." {
+				if len(dotFree) > 0 {
+					dotFree = dotFree[:len(dotFree)-1]
+				}
+			} else if s != "." {
+				dotFree = append(dotFree, s)
+			}
+			lastIsDot = (s == "." || s == "..")
+		}
+		// Special case if host does not end with / and new path does not begin with /
+		u.Path = strings.Join(dotFree, "/")
+		if u.Host != "" && !strings.HasSuffix(u.Host, "/") && !strings.HasPrefix(u.Path, "/") {
+			u.Path = "/" + u.Path
+		}
+		// Special case if the last segment was a dot, make sure the path ends with a slash
+		if lastIsDot && !strings.HasSuffix(u.Path, "/") {
+			u.Path += "/"
+		}
+	}
+}
+
+func removeDirectoryIndex(u *url.URL) {
+	if len(u.Path) > 0 {
+		u.Path = rxDirIndex.ReplaceAllString(u.Path, "$1")
+	}
+}
+
+func removeFragment(u *url.URL) {
+	u.Fragment = ""
+}
+
+func forceHTTP(u *url.URL) {
+	if strings.ToLower(u.Scheme) == "https" {
+		u.Scheme = "http"
+	}
+}
+
+func removeDuplicateSlashes(u *url.URL) {
+	if len(u.Path) > 0 {
+		u.Path = rxDupSlashes.ReplaceAllString(u.Path, "/")
+	}
+}
+
+func removeWWW(u *url.URL) {
+	if len(u.Host) > 0 && strings.HasPrefix(strings.ToLower(u.Host), "www.") {
+		u.Host = u.Host[4:]
+	}
+}
+
+func addWWW(u *url.URL) {
+	if len(u.Host) > 0 && !strings.HasPrefix(strings.ToLower(u.Host), "www.") {
+		u.Host = "www." + u.Host
+	}
+}
+
+func sortQuery(u *url.URL) {
+	q := u.Query()
+
+	if len(q) > 0 {
+		arKeys := make([]string, len(q))
+		i := 0
+		for k, _ := range q {
+			arKeys[i] = k
+			i++
+		}
+		sort.Strings(arKeys)
+		buf := new(bytes.Buffer)
+		for _, k := range arKeys {
+			sort.Strings(q[k])
+			for _, v := range q[k] {
+				if buf.Len() > 0 {
+					buf.WriteRune('&')
+				}
+				buf.WriteString(fmt.Sprintf("%s=%s", k, urlesc.QueryEscape(v)))
+			}
+		}
+
+		// Rebuild the raw query string
+		u.RawQuery = buf.String()
+	}
+}
+
+func decodeDWORDHost(u *url.URL) {
+	if len(u.Host) > 0 {
+		if matches := rxDWORDHost.FindStringSubmatch(u.Host); len(matches) > 2 {
+			var parts [4]int64
+
+			dword, _ := strconv.ParseInt(matches[1], 10, 0)
+			for i, shift := range []uint{24, 16, 8, 0} {
+				parts[i] = dword >> shift & 0xFF
+			}
+			u.Host = fmt.Sprintf("%d.%d.%d.%d%s", parts[0], parts[1], parts[2], parts[3], matches[2])
+		}
+	}
+}
+
+func decodeOctalHost(u *url.URL) {
+	if len(u.Host) > 0 {
+		if matches := rxOctalHost.FindStringSubmatch(u.Host); len(matches) > 5 {
+			var parts [4]int64
+
+			for i := 1; i <= 4; i++ {
+				parts[i-1], _ = strconv.ParseInt(matches[i], 8, 0)
+			}
+			u.Host = fmt.Sprintf("%d.%d.%d.%d%s", parts[0], parts[1], parts[2], parts[3], matches[5])
+		}
+	}
+}
+
+func decodeHexHost(u *url.URL) {
+	if len(u.Host) > 0 {
+		if matches := rxHexHost.FindStringSubmatch(u.Host); len(matches) > 2 {
+			// Conversion is safe because of regex validation
+			parsed, _ := strconv.ParseInt(matches[1], 16, 0)
+			// Set host as DWORD (base 10) encoded host
+			u.Host = fmt.Sprintf("%d%s", parsed, matches[2])
+			// The rest is the same as decoding a DWORD host
+			decodeDWORDHost(u)
+		}
+	}
+}
+
+func removeUnncessaryHostDots(u *url.URL) {
+	if len(u.Host) > 0 {
+		if matches := rxHostDots.FindStringSubmatch(u.Host); len(matches) > 1 {
+			// Trim the leading and trailing dots
+			u.Host = strings.Trim(matches[1], ".")
+			if len(matches) > 2 {
+				u.Host += matches[2]
+			}
+		}
+	}
+}
+
+func removeEmptyPortSeparator(u *url.URL) {
+	if len(u.Host) > 0 {
+		u.Host = rxEmptyPort.ReplaceAllString(u.Host, "")
+	}
+}

vendor/github.com/PuerkitoBio/purell/purell_test.go

@@ -0,0 +1,768 @@
+package purell
+
+import (
+	"fmt"
+	"net/url"
+	"testing"
+)
+
+type testCase struct {
+	nm     string
+	src    string
+	flgs   NormalizationFlags
+	res    string
+	parsed bool
+}
+
+var (
+	cases = [...]*testCase{
+		&testCase{
+			"LowerScheme",
+			"HTTP://www.SRC.ca",
+			FlagLowercaseScheme,
+			"http://www.SRC.ca",
+			false,
+		},
+		&testCase{
+			"LowerScheme2",
+			"http://www.SRC.ca",
+			FlagLowercaseScheme,
+			"http://www.SRC.ca",
+			false,
+		},
+		&testCase{
+			"LowerHost",
+			"HTTP://www.SRC.ca/",
+			FlagLowercaseHost,
+			"http://www.src.ca/", // Since Go1.1, scheme is automatically lowercased
+			false,
+		},
+		&testCase{
+			"UpperEscapes",
+			`http://www.whatever.com/Some%aa%20Special%8Ecases/`,
+			FlagUppercaseEscapes,
+			"http://www.whatever.com/Some%AA%20Special%8Ecases/",
+			false,
+		},
+		&testCase{
+			"UnnecessaryEscapes",
+			`http://www.toto.com/%41%42%2E%44/%32%33%52%2D/%5f%7E`,
+			FlagDecodeUnnecessaryEscapes,
+			"http://www.toto.com/AB.D/23R-/_~",
+			false,
+		},
+		&testCase{
+			"RemoveDefaultPort",
+			"HTTP://www.SRC.ca:80/",
+			FlagRemoveDefaultPort,
+			"http://www.SRC.ca/", // Since Go1.1, scheme is automatically lowercased
+			false,
+		},
+		&testCase{
+			"RemoveDefaultPort2",
+			"HTTP://www.SRC.ca:80",
+			FlagRemoveDefaultPort,
+			"http://www.SRC.ca", // Since Go1.1, scheme is automatically lowercased
+			false,
+		},
+		&testCase{
+			"RemoveDefaultPort3",
+			"HTTP://www.SRC.ca:8080",
+			FlagRemoveDefaultPort,
+			"http://www.SRC.ca:8080", // Since Go1.1, scheme is automatically lowercased
+			false,
+		},
+		&testCase{
+			"Safe",
+			"HTTP://www.SRC.ca:80/to%1ato%8b%ee/OKnow%41%42%43%7e",
+			FlagsSafe,
+			"http://www.src.ca/to%1Ato%8B%EE/OKnowABC~",
+			false,
+		},
+		&testCase{
+			"BothLower",
+			"HTTP://www.SRC.ca:80/to%1ato%8b%ee/OKnow%41%42%43%7e",
+			FlagLowercaseHost | FlagLowercaseScheme,
+			"http://www.src.ca:80/to%1Ato%8B%EE/OKnowABC~",
+			false,
+		},
+		&testCase{
+			"RemoveTrailingSlash",
+			"HTTP://www.SRC.ca:80/",
+			FlagRemoveTrailingSlash,
+			"http://www.SRC.ca:80", // Since Go1.1, scheme is automatically lowercased
+			false,
+		},
+		&testCase{
+			"RemoveTrailingSlash2",
+			"HTTP://www.SRC.ca:80/toto/titi/",
+			FlagRemoveTrailingSlash,
+			"http://www.SRC.ca:80/toto/titi", // Since Go1.1, scheme is automatically lowercased
+			false,
+		},
+		&testCase{
+			"RemoveTrailingSlash3",
+			"HTTP://www.SRC.ca:80/toto/titi/fin/?a=1",
+			FlagRemoveTrailingSlash,
+			"http://www.SRC.ca:80/toto/titi/fin?a=1", // Since Go1.1, scheme is automatically lowercased
+			false,
+		},
+		&testCase{
+			"AddTrailingSlash",
+			"HTTP://www.SRC.ca:80",
+			FlagAddTrailingSlash,
+			"http://www.SRC.ca:80/", // Since Go1.1, scheme is automatically lowercased
+			false,
+		},
+		&testCase{
+			"AddTrailingSlash2",
+			"HTTP://www.SRC.ca:80/toto/titi.html",
+			FlagAddTrailingSlash,
+			"http://www.SRC.ca:80/toto/titi.html/", // Since Go1.1, scheme is automatically lowercased
+			false,
+		},
+		&testCase{
+			"AddTrailingSlash3",
+			"HTTP://www.SRC.ca:80/toto/titi/fin?a=1",
+			FlagAddTrailingSlash,
+			"http://www.SRC.ca:80/toto/titi/fin/?a=1", // Since Go1.1, scheme is automatically lowercased
+			false,
+		},
+		&testCase{
+			"RemoveDotSegments",
+			"HTTP://root/a/b/./../../c/",
+			FlagRemoveDotSegments,
+			"http://root/c/", // Since Go1.1, scheme is automatically lowercased
+			false,
+		},
+		&testCase{
+			"RemoveDotSegments2",
+			"HTTP://root/../a/b/./../c/../d",
+			FlagRemoveDotSegments,
+			"http://root/a/d", // Since Go1.1, scheme is automatically lowercased
+			false,
+		},
+		&testCase{
+			"UsuallySafe",
+			"HTTP://www.SRC.ca:80/to%1ato%8b%ee/./c/d/../OKnow%41%42%43%7e/?a=b#test",
+			FlagsUsuallySafeGreedy,
+			"http://www.src.ca/to%1Ato%8B%EE/c/OKnowABC~?a=b#test",
+			false,
+		},
+		&testCase{
+			"RemoveDirectoryIndex",
+			"HTTP://root/a/b/c/default.aspx",
+			FlagRemoveDirectoryIndex,
+			"http://root/a/b/c/", // Since Go1.1, scheme is automatically lowercased
+			false,
+		},
+		&testCase{
+			"RemoveDirectoryIndex2",
+			"HTTP://root/a/b/c/default#a=b",
+			FlagRemoveDirectoryIndex,
+			"http://root/a/b/c/default#a=b", // Since Go1.1, scheme is automatically lowercased
+			false,
+		},
+		&testCase{
+			"RemoveFragment",
+			"HTTP://root/a/b/c/default#toto=tata",
+			FlagRemoveFragment,
+			"http://root/a/b/c/default", // Since Go1.1, scheme is automatically lowercased
+			false,
+		},
+		&testCase{
+			"ForceHTTP",
+			"https://root/a/b/c/default#toto=tata",
+			FlagForceHTTP,
+			"http://root/a/b/c/default#toto=tata",
+			false,
+		},
+		&testCase{
+			"RemoveDuplicateSlashes",
+			"https://root/a//b///c////default#toto=tata",
+			FlagRemoveDuplicateSlashes,
+			"https://root/a/b/c/default#toto=tata",
+			false,
+		},
+		&testCase{
+			"RemoveDuplicateSlashes2",
+			"https://root//a//b///c////default#toto=tata",
+			FlagRemoveDuplicateSlashes,
+			"https://root/a/b/c/default#toto=tata",
+			false,
+		},
+		&testCase{
+			"RemoveWWW",
+			"https://www.root/a/b/c/",
+			FlagRemoveWWW,
+			"https://root/a/b/c/",
+			false,
+		},
+		&testCase{
+			"RemoveWWW2",
+			"https://WwW.Root/a/b/c/",
+			FlagRemoveWWW,
+			"https://Root/a/b/c/",
+			false,
+		},
+		&testCase{
+			"AddWWW",
+			"https://Root/a/b/c/",
+			FlagAddWWW,
+			"https://www.Root/a/b/c/",
+			false,
+		},
+		&testCase{
+			"SortQuery",
+			"http://root/toto/?b=4&a=1&c=3&b=2&a=5",
+			FlagSortQuery,
+			"http://root/toto/?a=1&a=5&b=2&b=4&c=3",
+			false,
+		},
+		&testCase{
+			"RemoveEmptyQuerySeparator",
+			"http://root/toto/?",
+			FlagRemoveEmptyQuerySeparator,
+			"http://root/toto/",
+			false,
+		},
+		&testCase{
+			"Unsafe",
+			"HTTPS://www.RooT.com/toto/t%45%1f///a/./b/../c/?z=3&w=2&a=4&w=1#invalid",
+			FlagsUnsafeGreedy,
+			"http://root.com/toto/tE%1F/a/c?a=4&w=1&w=2&z=3",
+			false,
+		},
+		&testCase{
+			"Safe2",
+			"HTTPS://www.RooT.com/toto/t%45%1f///a/./b/../c/?z=3&w=2&a=4&w=1#invalid",
+			FlagsSafe,
+			"https://www.root.com/toto/tE%1F///a/./b/../c/?z=3&w=2&a=4&w=1#invalid",
+			false,
+		},
+		&testCase{
+			"UsuallySafe2",
+			"HTTPS://www.RooT.com/toto/t%45%1f///a/./b/../c/?z=3&w=2&a=4&w=1#invalid",
+			FlagsUsuallySafeGreedy,
+			"https://www.root.com/toto/tE%1F///a/c?z=3&w=2&a=4&w=1#invalid",
+			false,
+		},
+		&testCase{
+			"AddTrailingSlashBug",
+			"http://src.ca/",
+			FlagsAllNonGreedy,
+			"http://www.src.ca/",
+			false,
+		},
+		&testCase{
+			"SourceModified",
+			"HTTPS://www.RooT.com/toto/t%45%1f///a/./b/../c/?z=3&w=2&a=4&w=1#invalid",
+			FlagsUnsafeGreedy,
+			"http://root.com/toto/tE%1F/a/c?a=4&w=1&w=2&z=3",
+			true,
+		},
+		&testCase{
+			"IPv6-1",
+			"http://[2001:db8:1f70::999:de8:7648:6e8]/test",
+			FlagsSafe | FlagRemoveDotSegments,
+			"http://[2001:db8:1f70::999:de8:7648:6e8]/test",
+			false,
+		},
+		&testCase{
+			"IPv6-2",
+			"http://[::ffff:192.168.1.1]/test",
+			FlagsSafe | FlagRemoveDotSegments,
+			"http://[::ffff:192.168.1.1]/test",
+			false,
+		},
+		&testCase{
+			"IPv6-3",
+			"http://[::ffff:192.168.1.1]:80/test",
+			FlagsSafe | FlagRemoveDotSegments,
+			"http://[::ffff:192.168.1.1]/test",
+			false,
+		},
+		&testCase{
+			"IPv6-4",
+			"htTps://[::fFff:192.168.1.1]:443/test",
+			FlagsSafe | FlagRemoveDotSegments,
+			"https://[::ffff:192.168.1.1]/test",
+			false,
+		},
+		&testCase{
+			"FTP",
+			"ftp://user:pass@ftp.foo.net/foo/bar",
+			FlagsSafe | FlagRemoveDotSegments,
+			"ftp://user:pass@ftp.foo.net/foo/bar",
+			false,
+		},
+		&testCase{
+			"Standard-1",
+			"http://www.foo.com:80/foo",
+			FlagsSafe | FlagRemoveDotSegments,
+			"http://www.foo.com/foo",
+			false,
+		},
+		&testCase{
+			"Standard-2",
+			"http://www.foo.com:8000/foo",
+			FlagsSafe | FlagRemoveDotSegments,
+			"http://www.foo.com:8000/foo",
+			false,
+		},
+		&testCase{
+			"Standard-3",
+			"http://www.foo.com/%7ebar",
+			FlagsSafe | FlagRemoveDotSegments,
+			"http://www.foo.com/~bar",
+			false,
+		},
+		&testCase{
+			"Standard-4",
+			"http://www.foo.com/%7Ebar",
+			FlagsSafe | FlagRemoveDotSegments,
+			"http://www.foo.com/~bar",
+			false,
+		},
+		&testCase{
+			"Standard-5",
+			"http://USER:pass@www.Example.COM/foo/bar",
+			FlagsSafe | FlagRemoveDotSegments,
+			"http://USER:pass@www.example.com/foo/bar",
+			false,
+		},
+		&testCase{
+			"Standard-6",
+			"http://test.example/?a=%26&b=1",
+			FlagsSafe | FlagRemoveDotSegments,
+			"http://test.example/?a=%26&b=1",
+			false,
+		},
+		&testCase{
+			"Standard-7",
+			"http://test.example/%25/?p=%20val%20%25",
+			FlagsSafe | FlagRemoveDotSegments,
+			"http://test.example/%25/?p=%20val%20%25",
+			false,
+		},
+		&testCase{
+			"Standard-8",
+			"http://test.example/path/with a%20space+/",
+			FlagsSafe | FlagRemoveDotSegments,
+			"http://test.example/path/with%20a%20space+/",
+			false,
+		},
+		&testCase{
+			"Standard-9",
+			"http://test.example/?",
+			FlagsSafe | FlagRemoveDotSegments,
+			"http://test.example/",
+			false,
+		},
+		&testCase{
+			"Standard-10",
+			"http://a.COM/path/?b&a",
+			FlagsSafe | FlagRemoveDotSegments,
+			"http://a.com/path/?b&a",
+			false,
+		},
+		&testCase{
+			"StandardCasesAddTrailingSlash",
+			"http://test.example?",
+			FlagsSafe | FlagAddTrailingSlash,
+			"http://test.example/",
+			false,
+		},
+		&testCase{
+			"OctalIP-1",
+			"http://0123.011.0.4/",
+			FlagsSafe | FlagDecodeOctalHost,
+			"http://0123.011.0.4/",
+			false,
+		},
+		&testCase{
+			"OctalIP-2",
+			"http://0102.0146.07.0223/",
+			FlagsSafe | FlagDecodeOctalHost,
+			"http://66.102.7.147/",
+			false,
+		},
+		&testCase{
+			"OctalIP-3",
+			"http://0102.0146.07.0223.:23/",
+			FlagsSafe | FlagDecodeOctalHost,
+			"http://66.102.7.147.:23/",
+			false,
+		},
+		&testCase{
+			"OctalIP-4",
+			"http://USER:pass@0102.0146.07.0223../",
+			FlagsSafe | FlagDecodeOctalHost,
+			"http://USER:pass@66.102.7.147../",
+			false,
+		},
+		&testCase{
+			"DWORDIP-1",
+			"http://123.1113982867/",
+			FlagsSafe | FlagDecodeDWORDHost,
+			"http://123.1113982867/",
+			false,
+		},
+		&testCase{
+			"DWORDIP-2",
+			"http://1113982867/",
+			FlagsSafe | FlagDecodeDWORDHost,
+			"http://66.102.7.147/",
+			false,
+		},
+		&testCase{
+			"DWORDIP-3",
+			"http://1113982867.:23/",
+			FlagsSafe | FlagDecodeDWORDHost,
+			"http://66.102.7.147.:23/",
+			false,
+		},
+		&testCase{
+			"DWORDIP-4",
+			"http://USER:pass@1113982867../",
+			FlagsSafe | FlagDecodeDWORDHost,
+			"http://USER:pass@66.102.7.147../",
+			false,
+		},
+		&testCase{
+			"HexIP-1",
+			"http://0x123.1113982867/",
+			FlagsSafe | FlagDecodeHexHost,
+			"http://0x123.1113982867/",
+			false,
+		},
+		&testCase{
+			"HexIP-2",
+			"http://0x42660793/",
+			FlagsSafe | FlagDecodeHexHost,
+			"http://66.102.7.147/",
+			false,
+		},
+		&testCase{
+			"HexIP-3",
+			"http://0x42660793.:23/",
+			FlagsSafe | FlagDecodeHexHost,
+			"http://66.102.7.147.:23/",
+			false,
+		},
+		&testCase{
+			"HexIP-4",
+			"http://USER:pass@0x42660793../",
+			FlagsSafe | FlagDecodeHexHost,
+			"http://USER:pass@66.102.7.147../",
+			false,
+		},
+		&testCase{
+			"UnnecessaryHostDots-1",
+			"http://.www.foo.com../foo/bar.html",
+			FlagsSafe | FlagRemoveUnnecessaryHostDots,
+			"http://www.foo.com/foo/bar.html",
+			false,
+		},
+		&testCase{
+			"UnnecessaryHostDots-2",
+			"http://www.foo.com./foo/bar.html",
+			FlagsSafe | FlagRemoveUnnecessaryHostDots,
+			"http://www.foo.com/foo/bar.html",
+			false,
+		},
+		&testCase{
+			"UnnecessaryHostDots-3",
+			"http://www.foo.com.:81/foo",
+			FlagsSafe | FlagRemoveUnnecessaryHostDots,
+			"http://www.foo.com:81/foo",
+			false,
+		},
+		&testCase{
+			"UnnecessaryHostDots-4",
+			"http://www.example.com./",
+			FlagsSafe | FlagRemoveUnnecessaryHostDots,
+			"http://www.example.com/",
+			false,
+		},
+		&testCase{
+			"EmptyPort-1",
+			"http://www.thedraymin.co.uk:/main/?p=308",
+			FlagsSafe | FlagRemoveEmptyPortSeparator,
+			"http://www.thedraymin.co.uk/main/?p=308",
+			false,
+		},
+		&testCase{
+			"EmptyPort-2",
+			"http://www.src.ca:",
+			FlagsSafe | FlagRemoveEmptyPortSeparator,
+			"http://www.src.ca",
+			false,
+		},
+		&testCase{
+			"Slashes-1",
+			"http://test.example/foo/bar/.",
+			FlagsSafe | FlagRemoveDotSegments | FlagRemoveDuplicateSlashes,
+			"http://test.example/foo/bar/",
+			false,
+		},
+		&testCase{
+			"Slashes-2",
+			"http://test.example/foo/bar/./",
+			FlagsSafe | FlagRemoveDotSegments | FlagRemoveDuplicateSlashes,
+			"http://test.example/foo/bar/",
+			false,
+		},
+		&testCase{
+			"Slashes-3",
+			"http://test.example/foo/bar/..",
+			FlagsSafe | FlagRemoveDotSegments | FlagRemoveDuplicateSlashes,
+			"http://test.example/foo/",
+			false,
+		},
+		&testCase{
+			"Slashes-4",
+			"http://test.example/foo/bar/../",
+			FlagsSafe | FlagRemoveDotSegments | FlagRemoveDuplicateSlashes,
+			"http://test.example/foo/",
+			false,
+		},
+		&testCase{
+			"Slashes-5",
+			"http://test.example/foo/bar/../baz",
+			FlagsSafe | FlagRemoveDotSegments | FlagRemoveDuplicateSlashes,
+			"http://test.example/foo/baz",
+			false,
+		},
+		&testCase{
+			"Slashes-6",
+			"http://test.example/foo/bar/../..",
+			FlagsSafe | FlagRemoveDotSegments | FlagRemoveDuplicateSlashes,
+			"http://test.example/",
+			false,
+		},
+		&testCase{
+			"Slashes-7",
+			"http://test.example/foo/bar/../../",
+			FlagsSafe | FlagRemoveDotSegments | FlagRemoveDuplicateSlashes,
+			"http://test.example/",
+			false,
+		},
+		&testCase{
+			"Slashes-8",
+			"http://test.example/foo/bar/../../baz",
+			FlagsSafe | FlagRemoveDotSegments | FlagRemoveDuplicateSlashes,
+			"http://test.example/baz",
+			false,
+		},
+		&testCase{
+			"Slashes-9",
+			"http://test.example/foo/bar/../../../baz",
+			FlagsSafe | FlagRemoveDotSegments | FlagRemoveDuplicateSlashes,
+			"http://test.example/baz",
+			false,
+		},
+		&testCase{
+			"Slashes-10",
+			"http://test.example/foo/bar/../../../../baz",
+			FlagsSafe | FlagRemoveDotSegments | FlagRemoveDuplicateSlashes,
+			"http://test.example/baz",
+			false,
+		},
+		&testCase{
+			"Slashes-11",
+			"http://test.example/./foo",
+			FlagsSafe | FlagRemoveDotSegments | FlagRemoveDuplicateSlashes,
+			"http://test.example/foo",
+			false,
+		},
+		&testCase{
+			"Slashes-12",
+			"http://test.example/../foo",
+			FlagsSafe | FlagRemoveDotSegments | FlagRemoveDuplicateSlashes,
+			"http://test.example/foo",
+			false,
+		},
+		&testCase{
+			"Slashes-13",
+			"http://test.example/foo.",
+			FlagsSafe | FlagRemoveDotSegments | FlagRemoveDuplicateSlashes,
+			"http://test.example/foo.",
+			false,
+		},
+		&testCase{
+			"Slashes-14",
+			"http://test.example/.foo",
+			FlagsSafe | FlagRemoveDotSegments | FlagRemoveDuplicateSlashes,
+			"http://test.example/.foo",
+			false,
+		},
+		&testCase{
+			"Slashes-15",
+			"http://test.example/foo..",
+			FlagsSafe | FlagRemoveDotSegments | FlagRemoveDuplicateSlashes,
+			"http://test.example/foo..",
+			false,
+		},
+		&testCase{
+			"Slashes-16",
+			"http://test.example/..foo",
+			FlagsSafe | FlagRemoveDotSegments | FlagRemoveDuplicateSlashes,
+			"http://test.example/..foo",
+			false,
+		},
+		&testCase{
+			"Slashes-17",
+			"http://test.example/./../foo",
+			FlagsSafe | FlagRemoveDotSegments | FlagRemoveDuplicateSlashes,
+			"http://test.example/foo",
+			false,
+		},
+		&testCase{
+			"Slashes-18",
+			"http://test.example/./foo/.",
+			FlagsSafe | FlagRemoveDotSegments | FlagRemoveDuplicateSlashes,
+			"http://test.example/foo/",
+			false,
+		},
+		&testCase{
+			"Slashes-19",
+			"http://test.example/foo/./bar",
+			FlagsSafe | FlagRemoveDotSegments | FlagRemoveDuplicateSlashes,
+			"http://test.example/foo/bar",
+			false,
+		},
+		&testCase{
+			"Slashes-20",
+			"http://test.example/foo/../bar",
+			FlagsSafe | FlagRemoveDotSegments | FlagRemoveDuplicateSlashes,
+			"http://test.example/bar",
+			false,
+		},
+		&testCase{
+			"Slashes-21",
+			"http://test.example/foo//",
+			FlagsSafe | FlagRemoveDotSegments | FlagRemoveDuplicateSlashes,
+			"http://test.example/foo/",
+			false,
+		},
+		&testCase{
+			"Slashes-22",
+			"http://test.example/foo///bar//",
+			FlagsSafe | FlagRemoveDotSegments | FlagRemoveDuplicateSlashes,
+			"http://test.example/foo/bar/",
+			false,
+		},
+		&testCase{
+			"Relative",
+			"foo/bar",
+			FlagsAllGreedy,
+			"foo/bar",
+			false,
+		},
+		&testCase{
+			"Relative-1",
+			"./../foo",
+			FlagsSafe | FlagRemoveDotSegments | FlagRemoveDuplicateSlashes,
+			"foo",
+			false,
+		},
+		&testCase{
+			"Relative-2",
+			"./foo/bar/../baz/../bang/..",
+			FlagsSafe | FlagRemoveDotSegments | FlagRemoveDuplicateSlashes,
+			"foo/",
+			false,
+		},
+		&testCase{
+			"Relative-3",
+			"foo///bar//",
+			FlagsSafe | FlagRemoveDotSegments | FlagRemoveDuplicateSlashes,
+			"foo/bar/",
+			false,
+		},
+		&testCase{
+			"Relative-4",
+			"www.youtube.com",
+			FlagsUsuallySafeGreedy,
+			"www.youtube.com",
+			false,
+		},
+		/*&testCase{
+			"UrlNorm-5",
+			"http://ja.wikipedia.org/wiki/%E3%82%AD%E3%83%A3%E3%82%BF%E3%83%94%E3%83%A9%E3%83%BC%E3%82%B8%E3%83%A3%E3%83%91%E3%83%B3",
+			FlagsSafe | FlagRemoveDotSegments,
+			"http://ja.wikipedia.org/wiki/\xe3\x82\xad\xe3\x83\xa3\xe3\x82\xbf\xe3\x83\x94\xe3\x83\xa9\xe3\x83\xbc\xe3\x82\xb8\xe3\x83\xa3\xe3\x83\x91\xe3\x83\xb3",
+			false,
+		},
+		&testCase{
+			"UrlNorm-1",
+			"http://test.example/?a=%e3%82%82%26",
+			FlagsAllGreedy,
+			"http://test.example/?a=\xe3\x82\x82%26",
+			false,
+		},*/
+	}
+)
+
+func TestRunner(t *testing.T) {
+	for _, tc := range cases {
+		runCase(tc, t)
+	}
+}
+
+func runCase(tc *testCase, t *testing.T) {
+	t.Logf("running %s...", tc.nm)
+	if tc.parsed {
+		u, e := url.Parse(tc.src)
+		if e != nil {
+			t.Errorf("%s - FAIL : %s", tc.nm, e)
+			return
+		} else {
+			NormalizeURL(u, tc.flgs)
+			if s := u.String(); s != tc.res {
+				t.Errorf("%s - FAIL expected '%s', got '%s'", tc.nm, tc.res, s)
+			}
+		}
+	} else {
+		if s, e := NormalizeURLString(tc.src, tc.flgs); e != nil {
+			t.Errorf("%s - FAIL : %s", tc.nm, e)
+		} else if s != tc.res {
+			t.Errorf("%s - FAIL expected '%s', got '%s'", tc.nm, tc.res, s)
+		}
+	}
+}
+
+func TestDecodeUnnecessaryEscapesAll(t *testing.T) {
+	var url = "http://host/"
+
+	for i := 0; i < 256; i++ {
+		url += fmt.Sprintf("%%%02x", i)
+	}
+	if s, e := NormalizeURLString(url, FlagDecodeUnnecessaryEscapes); e != nil {
+		t.Fatalf("Got error %s", e.Error())
+	} else {
+		const want = "http://host/%00%01%02%03%04%05%06%07%08%09%0A%0B%0C%0D%0E%0F%10%11%12%13%14%15%16%17%18%19%1A%1B%1C%1D%1E%1F%20!%22%23$%25&'()*+,-./0123456789:;%3C=%3E%3F@ABCDEFGHIJKLMNOPQRSTUVWXYZ[%5C]%5E_%60abcdefghijklmnopqrstuvwxyz%7B%7C%7D~%7F%80%81%82%83%84%85%86%87%88%89%8A%8B%8C%8D%8E%8F%90%91%92%93%94%95%96%97%98%99%9A%9B%9C%9D%9E%9F%A0%A1%A2%A3%A4%A5%A6%A7%A8%A9%AA%AB%AC%AD%AE%AF%B0%B1%B2%B3%B4%B5%B6%B7%B8%B9%BA%BB%BC%BD%BE%BF%C0%C1%C2%C3%C4%C5%C6%C7%C8%C9%CA%CB%CC%CD%CE%CF%D0%D1%D2%D3%D4%D5%D6%D7%D8%D9%DA%DB%DC%DD%DE%DF%E0%E1%E2%E3%E4%E5%E6%E7%E8%E9%EA%EB%EC%ED%EE%EF%F0%F1%F2%F3%F4%F5%F6%F7%F8%F9%FA%FB%FC%FD%FE%FF"
+		if s != want {
+			t.Errorf("DecodeUnnecessaryEscapesAll:\nwant\n%s\ngot\n%s", want, s)
+		}
+	}
+}
+
+func TestEncodeNecessaryEscapesAll(t *testing.T) {
+	var url = "http://host/"
+
+	for i := 0; i < 256; i++ {
+		if i != 0x25 {
+			url += string(i)
+		}
+	}
+	if s, e := NormalizeURLString(url, FlagEncodeNecessaryEscapes); e != nil {
+		t.Fatalf("Got error %s", e.Error())
+	} else {
+		const want = "http://host/%00%01%02%03%04%05%06%07%08%09%0A%0B%0C%0D%0E%0F%10%11%12%13%14%15%16%17%18%19%1A%1B%1C%1D%1E%1F%20!%22#$&'()*+,-./0123456789:;%3C=%3E?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[%5C]%5E_%60abcdefghijklmnopqrstuvwxyz%7B%7C%7D~%7F%C2%80%C2%81%C2%82%C2%83%C2%84%C2%85%C2%86%C2%87%C2%88%C2%89%C2%8A%C2%8B%C2%8C%C2%8D%C2%8E%C2%8F%C2%90%C2%91%C2%92%C2%93%C2%94%C2%95%C2%96%C2%97%C2%98%C2%99%C2%9A%C2%9B%C2%9C%C2%9D%C2%9E%C2%9F%C2%A0%C2%A1%C2%A2%C2%A3%C2%A4%C2%A5%C2%A6%C2%A7%C2%A8%C2%A9%C2%AA%C2%AB%C2%AC%C2%AD%C2%AE%C2%AF%C2%B0%C2%B1%C2%B2%C2%B3%C2%B4%C2%B5%C2%B6%C2%B7%C2%B8%C2%B9%C2%BA%C2%BB%C2%BC%C2%BD%C2%BE%C2%BF%C3%80%C3%81%C3%82%C3%83%C3%84%C3%85%C3%86%C3%87%C3%88%C3%89%C3%8A%C3%8B%C3%8C%C3%8D%C3%8E%C3%8F%C3%90%C3%91%C3%92%C3%93%C3%94%C3%95%C3%96%C3%97%C3%98%C3%99%C3%9A%C3%9B%C3%9C%C3%9D%C3%9E%C3%9F%C3%A0%C3%A1%C3%A2%C3%A3%C3%A4%C3%A5%C3%A6%C3%A7%C3%A8%C3%A9%C3%AA%C3%AB%C3%AC%C3%AD%C3%AE%C3%AF%C3%B0%C3%B1%C3%B2%C3%B3%C3%B4%C3%B5%C3%B6%C3%B7%C3%B8%C3%B9%C3%BA%C3%BB%C3%BC%C3%BD%C3%BE%C3%BF"
+		if s != want {
+			t.Errorf("EncodeNecessaryEscapesAll:\nwant\n%s\ngot\n%s", want, s)
+		}
+	}
+}

vendor/github.com/PuerkitoBio/purell/urlnorm_test.go

@@ -0,0 +1,53 @@
+package purell
+
+import (
+	"testing"
+)
+
+// Test cases merged from PR #1
+// Originally from https://github.com/jehiah/urlnorm/blob/master/test_urlnorm.py
+
+func assertMap(t *testing.T, cases map[string]string, f NormalizationFlags) {
+	for bad, good := range cases {
+		s, e := NormalizeURLString(bad, f)
+		if e != nil {
+			t.Errorf("%s normalizing %v to %v", e.Error(), bad, good)
+		} else {
+			if s != good {
+				t.Errorf("source: %v expected: %v got: %v", bad, good, s)
+			}
+		}
+	}
+}
+
+// This tests normalization to a unicode representation
+// precent escapes for unreserved values are unescaped to their unicode value
+// tests normalization to idna domains
+// test ip word handling, ipv6 address handling, and trailing domain periods
+// in general, this matches google chromes unescaping for things in the address bar.
+// spaces are converted to '+' (perhaphs controversial)
+// http://code.google.com/p/google-url/ probably is another good reference for this approach
+func TestUrlnorm(t *testing.T) {
+	testcases := map[string]string{
+		"http://test.example/?a=%e3%82%82%26": "http://test.example/?a=%e3%82%82%26",
+		//"http://test.example/?a=%e3%82%82%26": "http://test.example/?a=\xe3\x82\x82%26", //should return a unicode character
+		"http://s.xn--q-bga.DE/":    "http://s.xn--q-bga.de/",       //should be in idna format
+		"http://XBLA\u306eXbox.com": "http://xn--xblaxbox-jf4g.com", //test utf8 and unicode
+		"http://президент.рф":       "http://xn--d1abbgf6aiiy.xn--p1ai",
+		"http://ПРЕЗИДЕНТ.РФ":       "http://xn--d1abbgf6aiiy.xn--p1ai",
+		"http://ａｂ￥ヲ￦○.com":         "http://xn--ab-ida8983azmfnvs.com", //test width folding
+		"http://\u00e9.com":         "http://xn--9ca.com",
+		"http://e\u0301.com":        "http://xn--9ca.com",
+		"http://ja.wikipedia.org/wiki/%E3%82%AD%E3%83%A3%E3%82%BF%E3%83%94%E3%83%A9%E3%83%BC%E3%82%B8%E3%83%A3%E3%83%91%E3%83%B3": "http://ja.wikipedia.org/wiki/%E3%82%AD%E3%83%A3%E3%82%BF%E3%83%94%E3%83%A9%E3%83%BC%E3%82%B8%E3%83%A3%E3%83%91%E3%83%B3",
+		//"http://ja.wikipedia.org/wiki/%E3%82%AD%E3%83%A3%E3%82%BF%E3%83%94%E3%83%A9%E3%83%BC%E3%82%B8%E3%83%A3%E3%83%91%E3%83%B3": "http://ja.wikipedia.org/wiki/\xe3\x82\xad\xe3\x83\xa3\xe3\x82\xbf\xe3\x83\x94\xe3\x83\xa9\xe3\x83\xbc\xe3\x82\xb8\xe3\x83\xa3\xe3\x83\x91\xe3\x83\xb3",
+
+		"http://test.example/\xe3\x82\xad": "http://test.example/%E3%82%AD",
+		//"http://test.example/\xe3\x82\xad":              "http://test.example/\xe3\x82\xad",
+		"http://test.example/?p=%23val#test-%23-val%25": "http://test.example/?p=%23val#test-%23-val%25", //check that %23 (#) is not escaped where it shouldn't be
+
+		"http://test.domain/I%C3%B1t%C3%ABrn%C3%A2ti%C3%B4n%EF%BF%BDliz%C3%A6ti%C3%B8n": "http://test.domain/I%C3%B1t%C3%ABrn%C3%A2ti%C3%B4n%EF%BF%BDliz%C3%A6ti%C3%B8n",
+		//"http://test.domain/I%C3%B1t%C3%ABrn%C3%A2ti%C3%B4n%EF%BF%BDliz%C3%A6ti%C3%B8n": "http://test.domain/I\xc3\xb1t\xc3\xabrn\xc3\xa2ti\xc3\xb4n\xef\xbf\xbdliz\xc3\xa6ti\xc3\xb8n",
+	}
+
+	assertMap(t, testcases, FlagsSafe|FlagRemoveDotSegments)
+}

vendor/github.com/PuerkitoBio/urlesc/.travis.yml

@@ -0,0 +1,11 @@
+language: go
+
+go:
+  - 1.4
+  - tip
+
+install:
+  - go build .
+
+script:
+  - go test -v

vendor/github.com/PuerkitoBio/urlesc/LICENSE

@@ -0,0 +1,27 @@
+Copyright (c) 2012 The Go Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

vendor/github.com/PuerkitoBio/urlesc/README.md

@@ -0,0 +1,16 @@
+urlesc [![Build Status](https://travis-ci.org/PuerkitoBio/urlesc.png?branch=master)](https://travis-ci.org/PuerkitoBio/urlesc) [![GoDoc](http://godoc.org/github.com/PuerkitoBio/urlesc?status.svg)](http://godoc.org/github.com/PuerkitoBio/urlesc)
+======
+
+Package urlesc implements query escaping as per RFC 3986.
+
+It contains some parts of the net/url package, modified so as to allow
+some reserved characters incorrectly escaped by net/url (see [issue 5684](https://github.com/golang/go/issues/5684)).
+
+## Install
+
+    go get github.com/PuerkitoBio/urlesc
+
+## License
+
+Go license (BSD-3-Clause)
+

vendor/github.com/PuerkitoBio/urlesc/urlesc.go

@@ -0,0 +1,180 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package urlesc implements query escaping as per RFC 3986.
+// It contains some parts of the net/url package, modified so as to allow
+// some reserved characters incorrectly escaped by net/url.
+// See https://github.com/golang/go/issues/5684
+package urlesc
+
+import (
+	"bytes"
+	"net/url"
+	"strings"
+)
+
+type encoding int
+
+const (
+	encodePath encoding = 1 + iota
+	encodeUserPassword
+	encodeQueryComponent
+	encodeFragment
+)
+
+// Return true if the specified character should be escaped when
+// appearing in a URL string, according to RFC 3986.
+func shouldEscape(c byte, mode encoding) bool {
+	// §2.3 Unreserved characters (alphanum)
+	if 'A' <= c && c <= 'Z' || 'a' <= c && c <= 'z' || '0' <= c && c <= '9' {
+		return false
+	}
+
+	switch c {
+	case '-', '.', '_', '~': // §2.3 Unreserved characters (mark)
+		return false
+
+	// §2.2 Reserved characters (reserved)
+	case ':', '/', '?', '#', '[', ']', '@', // gen-delims
+		'!', '$', '&', '\'', '(', ')', '*', '+', ',', ';', '=': // sub-delims
+		// Different sections of the URL allow a few of
+		// the reserved characters to appear unescaped.
+		switch mode {
+		case encodePath: // §3.3
+			// The RFC allows sub-delims and : @.
+			// '/', '[' and ']' can be used to assign meaning to individual path
+			// segments.  This package only manipulates the path as a whole,
+			// so we allow those as well.  That leaves only ? and # to escape.
+			return c == '?' || c == '#'
+
+		case encodeUserPassword: // §3.2.1
+			// The RFC allows : and sub-delims in
+			// userinfo.  The parsing of userinfo treats ':' as special so we must escape
+			// all the gen-delims.
+			return c == ':' || c == '/' || c == '?' || c == '#' || c == '[' || c == ']' || c == '@'
+
+		case encodeQueryComponent: // §3.4
+			// The RFC allows / and ?.
+			return c != '/' && c != '?'
+
+		case encodeFragment: // §4.1
+			// The RFC text is silent but the grammar allows
+			// everything, so escape nothing but #
+			return c == '#'
+		}
+	}
+
+	// Everything else must be escaped.
+	return true
+}
+
+// QueryEscape escapes the string so it can be safely placed
+// inside a URL query.
+func QueryEscape(s string) string {
+	return escape(s, encodeQueryComponent)
+}
+
+func escape(s string, mode encoding) string {
+	spaceCount, hexCount := 0, 0
+	for i := 0; i < len(s); i++ {
+		c := s[i]
+		if shouldEscape(c, mode) {
+			if c == ' ' && mode == encodeQueryComponent {
+				spaceCount++
+			} else {
+				hexCount++
+			}
+		}
+	}
+
+	if spaceCount == 0 && hexCount == 0 {
+		return s
+	}
+
+	t := make([]byte, len(s)+2*hexCount)
+	j := 0
+	for i := 0; i < len(s); i++ {
+		switch c := s[i]; {
+		case c == ' ' && mode == encodeQueryComponent:
+			t[j] = '+'
+			j++
+		case shouldEscape(c, mode):
+			t[j] = '%'
+			t[j+1] = "0123456789ABCDEF"[c>>4]
+			t[j+2] = "0123456789ABCDEF"[c&15]
+			j += 3
+		default:
+			t[j] = s[i]
+			j++
+		}
+	}
+	return string(t)
+}
+
+var uiReplacer = strings.NewReplacer(
+	"%21", "!",
+	"%27", "'",
+	"%28", "(",
+	"%29", ")",
+	"%2A", "*",
+)
+
+// unescapeUserinfo unescapes some characters that need not to be escaped as per RFC3986.
+func unescapeUserinfo(s string) string {
+	return uiReplacer.Replace(s)
+}
+
+// Escape reassembles the URL into a valid URL string.
+// The general form of the result is one of:
+//
+//	scheme:opaque
+//	scheme://userinfo@host/path?query#fragment
+//
+// If u.Opaque is non-empty, String uses the first form;
+// otherwise it uses the second form.
+//
+// In the second form, the following rules apply:
+//	- if u.Scheme is empty, scheme: is omitted.
+//	- if u.User is nil, userinfo@ is omitted.
+//	- if u.Host is empty, host/ is omitted.
+//	- if u.Scheme and u.Host are empty and u.User is nil,
+//	   the entire scheme://userinfo@host/ is omitted.
+//	- if u.Host is non-empty and u.Path begins with a /,
+//	   the form host/path does not add its own /.
+//	- if u.RawQuery is empty, ?query is omitted.
+//	- if u.Fragment is empty, #fragment is omitted.
+func Escape(u *url.URL) string {
+	var buf bytes.Buffer
+	if u.Scheme != "" {
+		buf.WriteString(u.Scheme)
+		buf.WriteByte(':')
+	}
+	if u.Opaque != "" {
+		buf.WriteString(u.Opaque)
+	} else {
+		if u.Scheme != "" || u.Host != "" || u.User != nil {
+			buf.WriteString("//")
+			if ui := u.User; ui != nil {
+				buf.WriteString(unescapeUserinfo(ui.String()))
+				buf.WriteByte('@')
+			}
+			if h := u.Host; h != "" {
+				buf.WriteString(h)
+			}
+		}
+		if u.Path != "" && u.Path[0] != '/' && u.Host != "" {
+			buf.WriteByte('/')
+		}
+		buf.WriteString(escape(u.Path, encodePath))
+	}
+	if u.RawQuery != "" {
+		buf.WriteByte('?')
+		buf.WriteString(u.RawQuery)
+	}
+	if u.Fragment != "" {
+		buf.WriteByte('#')
+		buf.WriteString(escape(u.Fragment, encodeFragment))
+	}
+	return buf.String()
+}

vendor/github.com/PuerkitoBio/urlesc/urlesc_test.go

@@ -0,0 +1,641 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package urlesc
+
+import (
+	"net/url"
+	"testing"
+)
+
+type URLTest struct {
+	in        string
+	out       *url.URL
+	roundtrip string // expected result of reserializing the URL; empty means same as "in".
+}
+
+var urltests = []URLTest{
+	// no path
+	{
+		"http://www.google.com",
+		&url.URL{
+			Scheme: "http",
+			Host:   "www.google.com",
+		},
+		"",
+	},
+	// path
+	{
+		"http://www.google.com/",
+		&url.URL{
+			Scheme: "http",
+			Host:   "www.google.com",
+			Path:   "/",
+		},
+		"",
+	},
+	// path with hex escaping
+	{
+		"http://www.google.com/file%20one%26two",
+		&url.URL{
+			Scheme: "http",
+			Host:   "www.google.com",
+			Path:   "/file one&two",
+		},
+		"http://www.google.com/file%20one&two",
+	},
+	// user
+	{
+		"ftp://webmaster@www.google.com/",
+		&url.URL{
+			Scheme: "ftp",
+			User:   url.User("webmaster"),
+			Host:   "www.google.com",
+			Path:   "/",
+		},
+		"",
+	},
+	// escape sequence in username
+	{
+		"ftp://john%20doe@www.google.com/",
+		&url.URL{
+			Scheme: "ftp",
+			User:   url.User("john doe"),
+			Host:   "www.google.com",
+			Path:   "/",
+		},
+		"ftp://john%20doe@www.google.com/",
+	},
+	// query
+	{
+		"http://www.google.com/?q=go+language",
+		&url.URL{
+			Scheme:   "http",
+			Host:     "www.google.com",
+			Path:     "/",
+			RawQuery: "q=go+language",
+		},
+		"",
+	},
+	// query with hex escaping: NOT parsed
+	{
+		"http://www.google.com/?q=go%20language",
+		&url.URL{
+			Scheme:   "http",
+			Host:     "www.google.com",
+			Path:     "/",
+			RawQuery: "q=go%20language",
+		},
+		"",
+	},
+	// %20 outside query
+	{
+		"http://www.google.com/a%20b?q=c+d",
+		&url.URL{
+			Scheme:   "http",
+			Host:     "www.google.com",
+			Path:     "/a b",
+			RawQuery: "q=c+d",
+		},
+		"",
+	},
+	// path without leading /, so no parsing
+	{
+		"http:www.google.com/?q=go+language",
+		&url.URL{
+			Scheme:   "http",
+			Opaque:   "www.google.com/",
+			RawQuery: "q=go+language",
+		},
+		"http:www.google.com/?q=go+language",
+	},
+	// path without leading /, so no parsing
+	{
+		"http:%2f%2fwww.google.com/?q=go+language",
+		&url.URL{
+			Scheme:   "http",
+			Opaque:   "%2f%2fwww.google.com/",
+			RawQuery: "q=go+language",
+		},
+		"http:%2f%2fwww.google.com/?q=go+language",
+	},
+	// non-authority with path
+	{
+		"mailto:/webmaster@golang.org",
+		&url.URL{
+			Scheme: "mailto",
+			Path:   "/webmaster@golang.org",
+		},
+		"mailto:///webmaster@golang.org", // unfortunate compromise
+	},
+	// non-authority
+	{
+		"mailto:webmaster@golang.org",
+		&url.URL{
+			Scheme: "mailto",
+			Opaque: "webmaster@golang.org",
+		},
+		"",
+	},
+	// unescaped :// in query should not create a scheme
+	{
+		"/foo?query=http://bad",
+		&url.URL{
+			Path:     "/foo",
+			RawQuery: "query=http://bad",
+		},
+		"",
+	},
+	// leading // without scheme should create an authority
+	{
+		"//foo",
+		&url.URL{
+			Host: "foo",
+		},
+		"",
+	},
+	// leading // without scheme, with userinfo, path, and query
+	{
+		"//user@foo/path?a=b",
+		&url.URL{
+			User:     url.User("user"),
+			Host:     "foo",
+			Path:     "/path",
+			RawQuery: "a=b",
+		},
+		"",
+	},
+	// Three leading slashes isn't an authority, but doesn't return an error.
+	// (We can't return an error, as this code is also used via
+	// ServeHTTP -> ReadRequest -> Parse, which is arguably a
+	// different URL parsing context, but currently shares the
+	// same codepath)
+	{
+		"///threeslashes",
+		&url.URL{
+			Path: "///threeslashes",
+		},
+		"",
+	},
+	{
+		"http://user:password@google.com",
+		&url.URL{
+			Scheme: "http",
+			User:   url.UserPassword("user", "password"),
+			Host:   "google.com",
+		},
+		"http://user:password@google.com",
+	},
+	// unescaped @ in username should not confuse host
+	{
+		"http://j@ne:password@google.com",
+		&url.URL{
+			Scheme: "http",
+			User:   url.UserPassword("j@ne", "password"),
+			Host:   "google.com",
+		},
+		"http://j%40ne:password@google.com",
+	},
+	// unescaped @ in password should not confuse host
+	{
+		"http://jane:p@ssword@google.com",
+		&url.URL{
+			Scheme: "http",
+			User:   url.UserPassword("jane", "p@ssword"),
+			Host:   "google.com",
+		},
+		"http://jane:p%40ssword@google.com",
+	},
+	{
+		"http://j@ne:password@google.com/p@th?q=@go",
+		&url.URL{
+			Scheme:   "http",
+			User:     url.UserPassword("j@ne", "password"),
+			Host:     "google.com",
+			Path:     "/p@th",
+			RawQuery: "q=@go",
+		},
+		"http://j%40ne:password@google.com/p@th?q=@go",
+	},
+	{
+		"http://www.google.com/?q=go+language#foo",
+		&url.URL{
+			Scheme:   "http",
+			Host:     "www.google.com",
+			Path:     "/",
+			RawQuery: "q=go+language",
+			Fragment: "foo",
+		},
+		"",
+	},
+	{
+		"http://www.google.com/?q=go+language#foo%26bar",
+		&url.URL{
+			Scheme:   "http",
+			Host:     "www.google.com",
+			Path:     "/",
+			RawQuery: "q=go+language",
+			Fragment: "foo&bar",
+		},
+		"http://www.google.com/?q=go+language#foo&bar",
+	},
+	{
+		"file:///home/adg/rabbits",
+		&url.URL{
+			Scheme: "file",
+			Host:   "",
+			Path:   "/home/adg/rabbits",
+		},
+		"file:///home/adg/rabbits",
+	},
+	// "Windows" paths are no exception to the rule.
+	// See golang.org/issue/6027, especially comment #9.
+	{
+		"file:///C:/FooBar/Baz.txt",
+		&url.URL{
+			Scheme: "file",
+			Host:   "",
+			Path:   "/C:/FooBar/Baz.txt",
+		},
+		"file:///C:/FooBar/Baz.txt",
+	},
+	// case-insensitive scheme
+	{
+		"MaIlTo:webmaster@golang.org",
+		&url.URL{
+			Scheme: "mailto",
+			Opaque: "webmaster@golang.org",
+		},
+		"mailto:webmaster@golang.org",
+	},
+	// Relative path
+	{
+		"a/b/c",
+		&url.URL{
+			Path: "a/b/c",
+		},
+		"a/b/c",
+	},
+	// escaped '?' in username and password
+	{
+		"http://%3Fam:pa%3Fsword@google.com",
+		&url.URL{
+			Scheme: "http",
+			User:   url.UserPassword("?am", "pa?sword"),
+			Host:   "google.com",
+		},
+		"",
+	},
+	// escaped '?' and '#' in path
+	{
+		"http://example.com/%3F%23",
+		&url.URL{
+			Scheme: "http",
+			Host:   "example.com",
+			Path:   "?#",
+		},
+		"",
+	},
+	// unescaped [ ] ! ' ( ) * in path
+	{
+		"http://example.com/[]!'()*",
+		&url.URL{
+			Scheme: "http",
+			Host:   "example.com",
+			Path:   "[]!'()*",
+		},
+		"http://example.com/[]!'()*",
+	},
+	// escaped : / ? # [ ] @ in username and password
+	{
+		"http://%3A%2F%3F:%23%5B%5D%40@example.com",
+		&url.URL{
+			Scheme: "http",
+			User:   url.UserPassword(":/?", "#[]@"),
+			Host:   "example.com",
+		},
+		"",
+	},
+	// unescaped ! $ & ' ( ) * + , ; = in username and password
+	{
+		"http://!$&'():*+,;=@example.com",
+		&url.URL{
+			Scheme: "http",
+			User:   url.UserPassword("!$&'()", "*+,;="),
+			Host:   "example.com",
+		},
+		"",
+	},
+	// unescaped = : / . ? = in query component
+	{
+		"http://example.com/?q=http://google.com/?q=",
+		&url.URL{
+			Scheme:   "http",
+			Host:     "example.com",
+			Path:     "/",
+			RawQuery: "q=http://google.com/?q=",
+		},
+		"",
+	},
+	// unescaped : / ? [ ] @ ! $ & ' ( ) * + , ; = in fragment
+	{
+		"http://example.com/#:/?%23[]@!$&'()*+,;=",
+		&url.URL{
+			Scheme:   "http",
+			Host:     "example.com",
+			Path:     "/",
+			Fragment: ":/?#[]@!$&'()*+,;=",
+		},
+		"",
+	},
+}
+
+func DoTestString(t *testing.T, parse func(string) (*url.URL, error), name string, tests []URLTest) {
+	for _, tt := range tests {
+		u, err := parse(tt.in)
+		if err != nil {
+			t.Errorf("%s(%q) returned error %s", name, tt.in, err)
+			continue
+		}
+		expected := tt.in
+		if len(tt.roundtrip) > 0 {
+			expected = tt.roundtrip
+		}
+		s := Escape(u)
+		if s != expected {
+			t.Errorf("Escape(%s(%q)) == %q (expected %q)", name, tt.in, s, expected)
+		}
+	}
+}
+
+func TestURLString(t *testing.T) {
+	DoTestString(t, url.Parse, "Parse", urltests)
+
+	// no leading slash on path should prepend
+	// slash on String() call
+	noslash := URLTest{
+		"http://www.google.com/search",
+		&url.URL{
+			Scheme: "http",
+			Host:   "www.google.com",
+			Path:   "search",
+		},
+		"",
+	}
+	s := Escape(noslash.out)
+	if s != noslash.in {
+		t.Errorf("Expected %s; go %s", noslash.in, s)
+	}
+}
+
+type EscapeTest struct {
+	in  string
+	out string
+	err error
+}
+
+var escapeTests = []EscapeTest{
+	{
+		"",
+		"",
+		nil,
+	},
+	{
+		"abc",
+		"abc",
+		nil,
+	},
+	{
+		"one two",
+		"one+two",
+		nil,
+	},
+	{
+		"10%",
+		"10%25",
+		nil,
+	},
+	{
+		" ?&=#+%!<>#\"{}|\\^[]`☺\t:/@$'()*,;",
+		"+?%26%3D%23%2B%25%21%3C%3E%23%22%7B%7D%7C%5C%5E%5B%5D%60%E2%98%BA%09%3A/%40%24%27%28%29%2A%2C%3B",
+		nil,
+	},
+}
+
+func TestEscape(t *testing.T) {
+	for _, tt := range escapeTests {
+		actual := QueryEscape(tt.in)
+		if tt.out != actual {
+			t.Errorf("QueryEscape(%q) = %q, want %q", tt.in, actual, tt.out)
+		}
+
+		// for bonus points, verify that escape:unescape is an identity.
+		roundtrip, err := url.QueryUnescape(actual)
+		if roundtrip != tt.in || err != nil {
+			t.Errorf("QueryUnescape(%q) = %q, %s; want %q, %s", actual, roundtrip, err, tt.in, "[no error]")
+		}
+	}
+}
+
+var resolveReferenceTests = []struct {
+	base, rel, expected string
+}{
+	// Absolute URL references
+	{"http://foo.com?a=b", "https://bar.com/", "https://bar.com/"},
+	{"http://foo.com/", "https://bar.com/?a=b", "https://bar.com/?a=b"},
+	{"http://foo.com/bar", "mailto:foo@example.com", "mailto:foo@example.com"},
+
+	// Path-absolute references
+	{"http://foo.com/bar", "/baz", "http://foo.com/baz"},
+	{"http://foo.com/bar?a=b#f", "/baz", "http://foo.com/baz"},
+	{"http://foo.com/bar?a=b", "/baz?c=d", "http://foo.com/baz?c=d"},
+
+	// Scheme-relative
+	{"https://foo.com/bar?a=b", "//bar.com/quux", "https://bar.com/quux"},
+
+	// Path-relative references:
+
+	// ... current directory
+	{"http://foo.com", ".", "http://foo.com/"},
+	{"http://foo.com/bar", ".", "http://foo.com/"},
+	{"http://foo.com/bar/", ".", "http://foo.com/bar/"},
+
+	// ... going down
+	{"http://foo.com", "bar", "http://foo.com/bar"},
+	{"http://foo.com/", "bar", "http://foo.com/bar"},
+	{"http://foo.com/bar/baz", "quux", "http://foo.com/bar/quux"},
+
+	// ... going up
+	{"http://foo.com/bar/baz", "../quux", "http://foo.com/quux"},
+	{"http://foo.com/bar/baz", "../../../../../quux", "http://foo.com/quux"},
+	{"http://foo.com/bar", "..", "http://foo.com/"},
+	{"http://foo.com/bar/baz", "./..", "http://foo.com/"},
+	// ".." in the middle (issue 3560)
+	{"http://foo.com/bar/baz", "quux/dotdot/../tail", "http://foo.com/bar/quux/tail"},
+	{"http://foo.com/bar/baz", "quux/./dotdot/../tail", "http://foo.com/bar/quux/tail"},
+	{"http://foo.com/bar/baz", "quux/./dotdot/.././tail", "http://foo.com/bar/quux/tail"},
+	{"http://foo.com/bar/baz", "quux/./dotdot/./../tail", "http://foo.com/bar/quux/tail"},
+	{"http://foo.com/bar/baz", "quux/./dotdot/dotdot/././../../tail", "http://foo.com/bar/quux/tail"},
+	{"http://foo.com/bar/baz", "quux/./dotdot/dotdot/./.././../tail", "http://foo.com/bar/quux/tail"},
+	{"http://foo.com/bar/baz", "quux/./dotdot/dotdot/dotdot/./../../.././././tail", "http://foo.com/bar/quux/tail"},
+	{"http://foo.com/bar/baz", "quux/./dotdot/../dotdot/../dot/./tail/..", "http://foo.com/bar/quux/dot/"},
+
+	// Remove any dot-segments prior to forming the target URI.
+	// http://tools.ietf.org/html/rfc3986#section-5.2.4
+	{"http://foo.com/dot/./dotdot/../foo/bar", "../baz", "http://foo.com/dot/baz"},
+
+	// Triple dot isn't special
+	{"http://foo.com/bar", "...", "http://foo.com/..."},
+
+	// Fragment
+	{"http://foo.com/bar", ".#frag", "http://foo.com/#frag"},
+
+	// RFC 3986: Normal Examples
+	// http://tools.ietf.org/html/rfc3986#section-5.4.1
+	{"http://a/b/c/d;p?q", "g:h", "g:h"},
+	{"http://a/b/c/d;p?q", "g", "http://a/b/c/g"},
+	{"http://a/b/c/d;p?q", "./g", "http://a/b/c/g"},
+	{"http://a/b/c/d;p?q", "g/", "http://a/b/c/g/"},
+	{"http://a/b/c/d;p?q", "/g", "http://a/g"},
+	{"http://a/b/c/d;p?q", "//g", "http://g"},
+	{"http://a/b/c/d;p?q", "?y", "http://a/b/c/d;p?y"},
+	{"http://a/b/c/d;p?q", "g?y", "http://a/b/c/g?y"},
+	{"http://a/b/c/d;p?q", "#s", "http://a/b/c/d;p?q#s"},
+	{"http://a/b/c/d;p?q", "g#s", "http://a/b/c/g#s"},
+	{"http://a/b/c/d;p?q", "g?y#s", "http://a/b/c/g?y#s"},
+	{"http://a/b/c/d;p?q", ";x", "http://a/b/c/;x"},
+	{"http://a/b/c/d;p?q", "g;x", "http://a/b/c/g;x"},
+	{"http://a/b/c/d;p?q", "g;x?y#s", "http://a/b/c/g;x?y#s"},
+	{"http://a/b/c/d;p?q", "", "http://a/b/c/d;p?q"},
+	{"http://a/b/c/d;p?q", ".", "http://a/b/c/"},
+	{"http://a/b/c/d;p?q", "./", "http://a/b/c/"},
+	{"http://a/b/c/d;p?q", "..", "http://a/b/"},
+	{"http://a/b/c/d;p?q", "../", "http://a/b/"},
+	{"http://a/b/c/d;p?q", "../g", "http://a/b/g"},
+	{"http://a/b/c/d;p?q", "../..", "http://a/"},
+	{"http://a/b/c/d;p?q", "../../", "http://a/"},
+	{"http://a/b/c/d;p?q", "../../g", "http://a/g"},
+
+	// RFC 3986: Abnormal Examples
+	// http://tools.ietf.org/html/rfc3986#section-5.4.2
+	{"http://a/b/c/d;p?q", "../../../g", "http://a/g"},
+	{"http://a/b/c/d;p?q", "../../../../g", "http://a/g"},
+	{"http://a/b/c/d;p?q", "/./g", "http://a/g"},
+	{"http://a/b/c/d;p?q", "/../g", "http://a/g"},
+	{"http://a/b/c/d;p?q", "g.", "http://a/b/c/g."},
+	{"http://a/b/c/d;p?q", ".g", "http://a/b/c/.g"},
+	{"http://a/b/c/d;p?q", "g..", "http://a/b/c/g.."},
+	{"http://a/b/c/d;p?q", "..g", "http://a/b/c/..g"},
+	{"http://a/b/c/d;p?q", "./../g", "http://a/b/g"},
+	{"http://a/b/c/d;p?q", "./g/.", "http://a/b/c/g/"},
+	{"http://a/b/c/d;p?q", "g/./h", "http://a/b/c/g/h"},
+	{"http://a/b/c/d;p?q", "g/../h", "http://a/b/c/h"},
+	{"http://a/b/c/d;p?q", "g;x=1/./y", "http://a/b/c/g;x=1/y"},
+	{"http://a/b/c/d;p?q", "g;x=1/../y", "http://a/b/c/y"},
+	{"http://a/b/c/d;p?q", "g?y/./x", "http://a/b/c/g?y/./x"},
+	{"http://a/b/c/d;p?q", "g?y/../x", "http://a/b/c/g?y/../x"},
+	{"http://a/b/c/d;p?q", "g#s/./x", "http://a/b/c/g#s/./x"},
+	{"http://a/b/c/d;p?q", "g#s/../x", "http://a/b/c/g#s/../x"},
+
+	// Extras.
+	{"https://a/b/c/d;p?q", "//g?q", "https://g?q"},
+	{"https://a/b/c/d;p?q", "//g#s", "https://g#s"},
+	{"https://a/b/c/d;p?q", "//g/d/e/f?y#s", "https://g/d/e/f?y#s"},
+	{"https://a/b/c/d;p#s", "?y", "https://a/b/c/d;p?y"},
+	{"https://a/b/c/d;p?q#s", "?y", "https://a/b/c/d;p?y"},
+}
+
+func TestResolveReference(t *testing.T) {
+	mustParse := func(url_ string) *url.URL {
+		u, err := url.Parse(url_)
+		if err != nil {
+			t.Fatalf("Expected URL to parse: %q, got error: %v", url_, err)
+		}
+		return u
+	}
+	opaque := &url.URL{Scheme: "scheme", Opaque: "opaque"}
+	for _, test := range resolveReferenceTests {
+		base := mustParse(test.base)
+		rel := mustParse(test.rel)
+		url := base.ResolveReference(rel)
+		if Escape(url) != test.expected {
+			t.Errorf("URL(%q).ResolveReference(%q) == %q, got %q", test.base, test.rel, test.expected, Escape(url))
+		}
+		// Ensure that new instances are returned.
+		if base == url {
+			t.Errorf("Expected URL.ResolveReference to return new URL instance.")
+		}
+		// Test the convenience wrapper too.
+		url, err := base.Parse(test.rel)
+		if err != nil {
+			t.Errorf("URL(%q).Parse(%q) failed: %v", test.base, test.rel, err)
+		} else if Escape(url) != test.expected {
+			t.Errorf("URL(%q).Parse(%q) == %q, got %q", test.base, test.rel, test.expected, Escape(url))
+		} else if base == url {
+			// Ensure that new instances are returned for the wrapper too.
+			t.Errorf("Expected URL.Parse to return new URL instance.")
+		}
+		// Ensure Opaque resets the URL.
+		url = base.ResolveReference(opaque)
+		if *url != *opaque {
+			t.Errorf("ResolveReference failed to resolve opaque URL: want %#v, got %#v", url, opaque)
+		}
+		// Test the convenience wrapper with an opaque URL too.
+		url, err = base.Parse("scheme:opaque")
+		if err != nil {
+			t.Errorf(`URL(%q).Parse("scheme:opaque") failed: %v`, test.base, err)
+		} else if *url != *opaque {
+			t.Errorf("Parse failed to resolve opaque URL: want %#v, got %#v", url, opaque)
+		} else if base == url {
+			// Ensure that new instances are returned, again.
+			t.Errorf("Expected URL.Parse to return new URL instance.")
+		}
+	}
+}
+
+type shouldEscapeTest struct {
+	in     byte
+	mode   encoding
+	escape bool
+}
+
+var shouldEscapeTests = []shouldEscapeTest{
+	// Unreserved characters (§2.3)
+	{'a', encodePath, false},
+	{'a', encodeUserPassword, false},
+	{'a', encodeQueryComponent, false},
+	{'a', encodeFragment, false},
+	{'z', encodePath, false},
+	{'A', encodePath, false},
+	{'Z', encodePath, false},
+	{'0', encodePath, false},
+	{'9', encodePath, false},
+	{'-', encodePath, false},
+	{'-', encodeUserPassword, false},
+	{'-', encodeQueryComponent, false},
+	{'-', encodeFragment, false},
+	{'.', encodePath, false},
+	{'_', encodePath, false},
+	{'~', encodePath, false},
+
+	// User information (§3.2.1)
+	{':', encodeUserPassword, true},
+	{'/', encodeUserPassword, true},
+	{'?', encodeUserPassword, true},
+	{'@', encodeUserPassword, true},
+	{'$', encodeUserPassword, false},
+	{'&', encodeUserPassword, false},
+	{'+', encodeUserPassword, false},
+	{',', encodeUserPassword, false},
+	{';', encodeUserPassword, false},
+	{'=', encodeUserPassword, false},
+}
+
+func TestShouldEscape(t *testing.T) {
+	for _, tt := range shouldEscapeTests {
+		if shouldEscape(tt.in, tt.mode) != tt.escape {
+			t.Errorf("shouldEscape(%q, %v) returned %v; expected %v", tt.in, tt.mode, !tt.escape, tt.escape)
+		}
+	}
+}

vendor/github.com/coreos/go-oidc/.gitignore

@@ -0,0 +1,2 @@
+/bin
+/gopath

vendor/github.com/coreos/go-oidc/.travis.yml

@@ -0,0 +1,16 @@
+language: go
+
+go:
+  - 1.7.5
+  - 1.8
+
+install:
+ - go get -v -t github.com/coreos/go-oidc/...
+ - go get golang.org/x/tools/cmd/cover
+ - go get github.com/golang/lint/golint
+
+script:
+ - ./test
+
+notifications:
+  email: false

vendor/github.com/coreos/go-oidc/CONTRIBUTING.md

@@ -0,0 +1,71 @@
+# How to Contribute
+
+CoreOS projects are [Apache 2.0 licensed](LICENSE) and accept contributions via
+GitHub pull requests.  This document outlines some of the conventions on
+development workflow, commit message formatting, contact points and other
+resources to make it easier to get your contribution accepted.
+
+# Certificate of Origin
+
+By contributing to this project you agree to the Developer Certificate of
+Origin (DCO). This document was created by the Linux Kernel community and is a
+simple statement that you, as a contributor, have the legal right to make the
+contribution. See the [DCO](DCO) file for details.
+
+# Email and Chat
+
+The project currently uses the general CoreOS email list and IRC channel:
+- Email: [coreos-dev](https://groups.google.com/forum/#!forum/coreos-dev)
+- IRC: #[coreos](irc://irc.freenode.org:6667/#coreos) IRC channel on freenode.org
+
+Please avoid emailing maintainers found in the MAINTAINERS file directly. They
+are very busy and read the mailing lists.
+
+## Getting Started
+
+- Fork the repository on GitHub
+- Read the [README](README.md) for build and test instructions
+- Play with the project, submit bugs, submit patches!
+
+## Contribution Flow
+
+This is a rough outline of what a contributor's workflow looks like:
+
+- Create a topic branch from where you want to base your work (usually master).
+- Make commits of logical units.
+- Make sure your commit messages are in the proper format (see below).
+- Push your changes to a topic branch in your fork of the repository.
+- Make sure the tests pass, and add any new tests as appropriate.
+- Submit a pull request to the original repository.
+
+Thanks for your contributions!
+
+### Format of the Commit Message
+
+We follow a rough convention for commit messages that is designed to answer two
+questions: what changed and why. The subject line should feature the what and
+the body of the commit should describe the why.
+
+```
+scripts: add the test-cluster command
+
+this uses tmux to setup a test cluster that you can easily kill and
+start for debugging.
+
+Fixes #38
+```
+
+The format can be described more formally as follows:
+
+```
+<subsystem>: <what changed>
+<BLANK LINE>
+<why this change was made>
+<BLANK LINE>
+<footer>
+```
+
+The first line is the subject and should be no longer than 70 characters, the
+second line is always blank, and other lines should be wrapped at 80 characters.
+This allows the message to be easier to read on GitHub as well as in various
+git tools.

vendor/github.com/coreos/go-oidc/DCO

@@ -0,0 +1,36 @@
+Developer Certificate of Origin
+Version 1.1
+
+Copyright (C) 2004, 2006 The Linux Foundation and its contributors.
+660 York Street, Suite 102,
+San Francisco, CA 94110 USA
+
+Everyone is permitted to copy and distribute verbatim copies of this
+license document, but changing it is not allowed.
+
+
+Developer's Certificate of Origin 1.1
+
+By making a contribution to this project, I certify that:
+
+(a) The contribution was created in whole or in part by me and I
+    have the right to submit it under the open source license
+    indicated in the file; or
+
+(b) The contribution is based upon previous work that, to the best
+    of my knowledge, is covered under an appropriate open source
+    license and I have the right under that license to submit that
+    work with modifications, whether created in whole or in part
+    by me, under the same open source license (unless I am
+    permitted to submit under a different license), as indicated
+    in the file; or
+
+(c) The contribution was provided directly to me by some other
+    person who certified (a), (b) or (c) and I have not modified
+    it.
+
+(d) I understand and agree that this project and the contribution
+    are public and that a record of the contribution (including all
+    personal information I submit with it, including my sign-off) is
+    maintained indefinitely and may be redistributed consistent with
+    this project or the open source license(s) involved.

vendor/github.com/coreos/go-oidc/LICENSE

@@ -0,0 +1,202 @@
+Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
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+
+      "Work" shall mean the work of authorship, whether in Source or
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+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
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+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "{}"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
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+
+   Copyright {yyyy} {name of copyright owner}
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+

vendor/github.com/coreos/go-oidc/MAINTAINERS

@@ -0,0 +1,3 @@
+Bobby Rullo <bobby.rullo@coreos.com> (@bobbyrullo)
+Ed Rooth <ed.rooth@coreos.com> (@sym3tri)
+Eric Chiang <eric.chiang@coreos.com> (@ericchiang)

vendor/github.com/coreos/go-oidc/NOTICE

@@ -0,0 +1,5 @@
+CoreOS Project
+Copyright 2014 CoreOS, Inc
+
+This product includes software developed at CoreOS, Inc.
+(http://www.coreos.com/).

vendor/github.com/coreos/go-oidc/README.md

@@ -0,0 +1,72 @@
+# go-oidc
+
+[![GoDoc](https://godoc.org/github.com/coreos/go-oidc?status.svg)](https://godoc.org/github.com/coreos/go-oidc)
+[![Build Status](https://travis-ci.org/coreos/go-oidc.png?branch=master)](https://travis-ci.org/coreos/go-oidc)
+
+## OpenID Connect support for Go
+
+This package enables OpenID Connect support for the [golang.org/x/oauth2](https://godoc.org/golang.org/x/oauth2) package.
+
+```go
+provider, err := oidc.NewProvider(ctx, "https://accounts.google.com")
+if err != nil {
+    // handle error
+}
+
+// Configure an OpenID Connect aware OAuth2 client.
+oauth2Config := oauth2.Config{
+    ClientID:     clientID,
+    ClientSecret: clientSecret,
+    RedirectURL:  redirectURL,
+
+    // Discovery returns the OAuth2 endpoints.
+    Endpoint: provider.Endpoint(),
+
+    // "openid" is a required scope for OpenID Connect flows.
+    Scopes: []string{oidc.ScopeOpenID, "profile", "email"},
+}
+```
+
+OAuth2 redirects are unchanged.
+
+```go
+func handleRedirect(w http.ResponseWriter, r *http.Request) {
+    http.Redirect(w, r, oauth2Config.AuthCodeURL(state), http.StatusFound)
+}
+```
+
+The on responses, the provider can be used to verify ID Tokens.
+
+```go
+var verifier = provider.Verifier()
+
+func handleOAuth2Callback(w http.ResponseWriter, r *http.Request) {
+    // Verify state and errors.
+
+    oauth2Token, err := oauth2Config.Exchange(ctx, r.URL.Query().Get("code"))
+    if err != nil {
+        // handle error
+    }
+
+    // Extract the ID Token from OAuth2 token.
+    rawIDToken, ok := oauth2Token.Extra("id_token").(string)
+    if !ok {
+        // handle missing token
+    }
+
+    // Parse and verify ID Token payload.
+    idToken, err := verifier.Verify(ctx, rawIDToken)
+    if err != nil {
+        // handle error
+    }
+
+    // Extract custom claims
+    var claims struct {
+        Email    string `json:"email"`
+        Verified bool   `json:"email_verified"`
+    }
+    if err := idToken.Claims(&claims); err != nil {
+        // handle error
+    }
+}
+```

vendor/github.com/coreos/go-oidc/example/README.md

@@ -0,0 +1,21 @@
+# Examples
+
+These are example uses of the oidc package. Each requires a Google account and the client ID and secret of a registered OAuth2 application. To create one:
+
+1. Visit your [Google Developer Console][google-developer-console].
+2. Click "Credentials" on the left column.
+3. Click the "Create credentials" button followed by "OAuth client ID".
+4. Select "Web application" and add "http://127.0.0.1:5556/auth/google/callback" as an authorized redirect URI.
+5. Click create and add the printed client ID and secret to your environment using the following variables:
+
+```
+GOOGLE_OAUTH2_CLIENT_ID
+GOOGLE_OAUTH2_CLIENT_SECRET
+```
+
+Finally run the examples using the Go tool and navigate to http://127.0.0.1:5556.
+
+```
+go run ./example/idtoken/app.go
+```
+[google-developer-console]: https://console.developers.google.com/apis/dashboard

vendor/github.com/coreos/go-oidc/example/idtoken/app.go

@@ -0,0 +1,93 @@
+/*
+This is an example application to demonstrate parsing an ID Token.
+*/
+package main
+
+import (
+	"encoding/json"
+	"log"
+	"net/http"
+	"os"
+
+	oidc "github.com/coreos/go-oidc"
+
+	"golang.org/x/net/context"
+	"golang.org/x/oauth2"
+)
+
+var (
+	clientID     = os.Getenv("GOOGLE_OAUTH2_CLIENT_ID")
+	clientSecret = os.Getenv("GOOGLE_OAUTH2_CLIENT_SECRET")
+)
+
+func main() {
+	ctx := context.Background()
+
+	provider, err := oidc.NewProvider(ctx, "https://accounts.google.com")
+	if err != nil {
+		log.Fatal(err)
+	}
+	oidcConfig := &oidc.Config{
+		ClientID:       clientID,
+		SkipNonceCheck: true,
+	}
+	verifier := provider.Verifier(oidcConfig)
+
+	config := oauth2.Config{
+		ClientID:     clientID,
+		ClientSecret: clientSecret,
+		Endpoint:     provider.Endpoint(),
+		RedirectURL:  "http://127.0.0.1:5556/auth/google/callback",
+		Scopes:       []string{oidc.ScopeOpenID, "profile", "email"},
+	}
+
+	state := "foobar" // Don't do this in production.
+
+	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		http.Redirect(w, r, config.AuthCodeURL(state), http.StatusFound)
+	})
+
+	http.HandleFunc("/auth/google/callback", func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Query().Get("state") != state {
+			http.Error(w, "state did not match", http.StatusBadRequest)
+			return
+		}
+
+		oauth2Token, err := config.Exchange(ctx, r.URL.Query().Get("code"))
+		if err != nil {
+			http.Error(w, "Failed to exchange token: "+err.Error(), http.StatusInternalServerError)
+			return
+		}
+		rawIDToken, ok := oauth2Token.Extra("id_token").(string)
+		if !ok {
+			http.Error(w, "No id_token field in oauth2 token.", http.StatusInternalServerError)
+			return
+		}
+		idToken, err := verifier.Verify(ctx, rawIDToken)
+		if err != nil {
+			http.Error(w, "Failed to verify ID Token: "+err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		oauth2Token.AccessToken = "*REDACTED*"
+
+		resp := struct {
+			OAuth2Token   *oauth2.Token
+			IDTokenClaims *json.RawMessage // ID Token payload is just JSON.
+		}{oauth2Token, new(json.RawMessage)}
+
+		if err := idToken.Claims(&resp.IDTokenClaims); err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+		data, err := json.MarshalIndent(resp, "", "    ")
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+		w.Write(data)
+	})
+
+	log.Printf("listening on http://%s/", "127.0.0.1:5556")
+	log.Fatal(http.ListenAndServe("127.0.0.1:5556", nil))
+}

vendor/github.com/coreos/go-oidc/example/nonce/app.go

@@ -0,0 +1,105 @@
+/*
+This is an example application to demonstrate verifying an ID Token with a nonce.
+*/
+package main
+
+import (
+	"encoding/json"
+	"errors"
+	"log"
+	"net/http"
+	"os"
+
+	oidc "github.com/coreos/go-oidc"
+
+	"golang.org/x/net/context"
+	"golang.org/x/oauth2"
+)
+
+var (
+	clientID     = os.Getenv("GOOGLE_OAUTH2_CLIENT_ID")
+	clientSecret = os.Getenv("GOOGLE_OAUTH2_CLIENT_SECRET")
+)
+
+const appNonce = "a super secret nonce"
+
+func ClaimNonce(nonce string) error {
+	if nonce != appNonce {
+		return errors.New("unregonized nonce")
+	}
+	return nil
+}
+
+func main() {
+	ctx := context.Background()
+
+	provider, err := oidc.NewProvider(ctx, "https://accounts.google.com")
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	oidcConfig := &oidc.Config{
+		ClientID:   clientID,
+		ClaimNonce: ClaimNonce,
+	}
+	// Use the nonce source to create a custom ID Token verifier.
+	nonceEnabledVerifier := provider.Verifier(oidcConfig)
+
+	config := oauth2.Config{
+		ClientID:     clientID,
+		ClientSecret: clientSecret,
+		Endpoint:     provider.Endpoint(),
+		RedirectURL:  "http://127.0.0.1:5556/auth/google/callback",
+		Scopes:       []string{oidc.ScopeOpenID, "profile", "email"},
+	}
+
+	state := "foobar" // Don't do this in production.
+
+	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		http.Redirect(w, r, config.AuthCodeURL(state, oidc.Nonce(appNonce)), http.StatusFound)
+	})
+
+	http.HandleFunc("/auth/google/callback", func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Query().Get("state") != state {
+			http.Error(w, "state did not match", http.StatusBadRequest)
+			return
+		}
+
+		oauth2Token, err := config.Exchange(ctx, r.URL.Query().Get("code"))
+		if err != nil {
+			http.Error(w, "Failed to exchange token: "+err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		rawIDToken, ok := oauth2Token.Extra("id_token").(string)
+		if !ok {
+			http.Error(w, "No id_token field in oauth2 token.", http.StatusInternalServerError)
+			return
+		}
+		// Verify the ID Token signature and nonce.
+		idToken, err := nonceEnabledVerifier.Verify(ctx, rawIDToken)
+		if err != nil {
+			http.Error(w, "Failed to verify ID Token: "+err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		resp := struct {
+			OAuth2Token   *oauth2.Token
+			IDTokenClaims *json.RawMessage // ID Token payload is just JSON.
+		}{oauth2Token, new(json.RawMessage)}
+
+		if err := idToken.Claims(&resp.IDTokenClaims); err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+		data, err := json.MarshalIndent(resp, "", "    ")
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+		w.Write(data)
+	})
+
+	log.Printf("listening on http://%s/", "127.0.0.1:5556")
+	log.Fatal(http.ListenAndServe("127.0.0.1:5556", nil))
+}

vendor/github.com/coreos/go-oidc/example/userinfo/app.go

@@ -0,0 +1,76 @@
+/*
+This is an example application to demonstrate querying the user info endpoint.
+*/
+package main
+
+import (
+	"encoding/json"
+	"log"
+	"net/http"
+	"os"
+
+	oidc "github.com/coreos/go-oidc"
+
+	"golang.org/x/net/context"
+	"golang.org/x/oauth2"
+)
+
+var (
+	clientID     = os.Getenv("GOOGLE_OAUTH2_CLIENT_ID")
+	clientSecret = os.Getenv("GOOGLE_OAUTH2_CLIENT_SECRET")
+)
+
+func main() {
+	ctx := context.Background()
+
+	provider, err := oidc.NewProvider(ctx, "https://accounts.google.com")
+	if err != nil {
+		log.Fatal(err)
+	}
+	config := oauth2.Config{
+		ClientID:     clientID,
+		ClientSecret: clientSecret,
+		Endpoint:     provider.Endpoint(),
+		RedirectURL:  "http://127.0.0.1:5556/auth/google/callback",
+		Scopes:       []string{oidc.ScopeOpenID, "profile", "email"},
+	}
+
+	state := "foobar" // Don't do this in production.
+
+	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		http.Redirect(w, r, config.AuthCodeURL(state), http.StatusFound)
+	})
+
+	http.HandleFunc("/auth/google/callback", func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Query().Get("state") != state {
+			http.Error(w, "state did not match", http.StatusBadRequest)
+			return
+		}
+
+		oauth2Token, err := config.Exchange(ctx, r.URL.Query().Get("code"))
+		if err != nil {
+			http.Error(w, "Failed to exchange token: "+err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		userInfo, err := provider.UserInfo(ctx, oauth2.StaticTokenSource(oauth2Token))
+		if err != nil {
+			http.Error(w, "Failed to get userinfo: "+err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		resp := struct {
+			OAuth2Token *oauth2.Token
+			UserInfo    *oidc.UserInfo
+		}{oauth2Token, userInfo}
+		data, err := json.MarshalIndent(resp, "", "    ")
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+		w.Write(data)
+	})
+
+	log.Printf("listening on http://%s/", "127.0.0.1:5556")
+	log.Fatal(http.ListenAndServe("127.0.0.1:5556", nil))
+}

vendor/github.com/coreos/go-oidc/gen.go

@@ -0,0 +1,150 @@
+// +build ignore
+
+// This file is used to generate keys for tests.
+
+package main
+
+import (
+	"bytes"
+	"crypto"
+	"crypto/ecdsa"
+	"crypto/elliptic"
+	"crypto/rand"
+	"crypto/rsa"
+	"encoding/hex"
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"text/template"
+
+	jose "gopkg.in/square/go-jose.v2"
+)
+
+type key struct {
+	name string
+	new  func() (crypto.Signer, error)
+}
+
+var keys = []key{
+	{
+		"ECDSA_256", func() (crypto.Signer, error) {
+			return ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
+		},
+	},
+	{
+		"ECDSA_384", func() (crypto.Signer, error) {
+			return ecdsa.GenerateKey(elliptic.P384(), rand.Reader)
+		},
+	},
+	{
+		"ECDSA_521", func() (crypto.Signer, error) {
+			return ecdsa.GenerateKey(elliptic.P521(), rand.Reader)
+		},
+	},
+	{
+		"RSA_1024", func() (crypto.Signer, error) {
+			return rsa.GenerateKey(rand.Reader, 1024)
+		},
+	},
+	{
+		"RSA_2048", func() (crypto.Signer, error) {
+			return rsa.GenerateKey(rand.Reader, 2048)
+		},
+	},
+	{
+		"RSA_4096", func() (crypto.Signer, error) {
+			return rsa.GenerateKey(rand.Reader, 4096)
+		},
+	},
+}
+
+func newJWK(k key, prefix, ident string) (privBytes, pubBytes []byte, err error) {
+	priv, err := k.new()
+	if err != nil {
+		return nil, nil, fmt.Errorf("generate %s: %v", k.name, err)
+	}
+	pub := priv.Public()
+
+	privKey := &jose.JSONWebKey{Key: priv}
+	thumbprint, err := privKey.Thumbprint(crypto.SHA256)
+	if err != nil {
+		return nil, nil, fmt.Errorf("computing thumbprint: %v", err)
+	}
+
+	keyID := hex.EncodeToString(thumbprint)
+	privKey.KeyID = keyID
+	pubKey := &jose.JSONWebKey{Key: pub, KeyID: keyID}
+
+	privBytes, err = json.MarshalIndent(privKey, prefix, ident)
+	if err != nil {
+		return
+	}
+	pubBytes, err = json.MarshalIndent(pubKey, prefix, ident)
+	return
+}
+
+type keyData struct {
+	Name string
+	Priv string
+	Pub  string
+}
+
+var tmpl = template.Must(template.New("").Parse(`// +build !golint
+
+// This file contains statically created JWKs for tests created by gen.go
+
+package oidc
+
+import (
+	"encoding/json"
+
+	jose "gopkg.in/square/go-jose.v2"
+)
+
+func mustLoadJWK(s string) jose.JSONWebKey {
+	var jwk jose.JSONWebKey
+	if err := json.Unmarshal([]byte(s), &jwk); err != nil {
+		panic(err)
+	}
+	return jwk
+}
+
+var (
+{{- range $i, $key := .Keys }}
+	testKey{{ $key.Name }} = mustLoadJWK(` + "`" + `{{ $key.Pub }}` + "`" + `)
+	testKey{{ $key.Name }}_Priv = mustLoadJWK(` + "`" + `{{ $key.Priv }}` + "`" + `)
+{{ end -}}
+)
+`))
+
+func main() {
+	var tmplData struct {
+		Keys []keyData
+	}
+	for _, k := range keys {
+		for i := 0; i < 4; i++ {
+			log.Printf("generating %s", k.name)
+			priv, pub, err := newJWK(k, "\t", "\t")
+			if err != nil {
+				log.Fatal(err)
+			}
+			name := fmt.Sprintf("%s_%d", k.name, i)
+
+			tmplData.Keys = append(tmplData.Keys, keyData{
+				Name: name,
+				Priv: string(priv),
+				Pub:  string(pub),
+			})
+		}
+	}
+
+	buff := new(bytes.Buffer)
+	if err := tmpl.Execute(buff, tmplData); err != nil {
+		log.Fatalf("excuting template: %v", err)
+	}
+
+	if err := ioutil.WriteFile("jose_test.go", buff.Bytes(), 0644); err != nil {
+		log.Fatal(err)
+	}
+}

vendor/github.com/coreos/go-oidc/http/client.go

@@ -0,0 +1,7 @@
+package http
+
+import "net/http"
+
+type Client interface {
+	Do(*http.Request) (*http.Response, error)
+}

vendor/github.com/coreos/go-oidc/http/doc.go

@@ -0,0 +1,2 @@
+// Package http is DEPRECATED. Use net/http instead.
+package http

vendor/github.com/coreos/go-oidc/http/http.go

@@ -0,0 +1,156 @@
+package http
+
+import (
+	"encoding/base64"
+	"encoding/json"
+	"errors"
+	"log"
+	"net/http"
+	"net/url"
+	"path"
+	"strconv"
+	"strings"
+	"time"
+)
+
+func WriteError(w http.ResponseWriter, code int, msg string) {
+	e := struct {
+		Error string `json:"error"`
+	}{
+		Error: msg,
+	}
+	b, err := json.Marshal(e)
+	if err != nil {
+		log.Printf("go-oidc: failed to marshal %#v: %v", e, err)
+		code = http.StatusInternalServerError
+		b = []byte(`{"error":"server_error"}`)
+	}
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(code)
+	w.Write(b)
+}
+
+// BasicAuth parses a username and password from the request's
+// Authorization header. This was pulled from golang master:
+// https://codereview.appspot.com/76540043
+func BasicAuth(r *http.Request) (username, password string, ok bool) {
+	auth := r.Header.Get("Authorization")
+	if auth == "" {
+		return
+	}
+
+	if !strings.HasPrefix(auth, "Basic ") {
+		return
+	}
+	c, err := base64.StdEncoding.DecodeString(strings.TrimPrefix(auth, "Basic "))
+	if err != nil {
+		return
+	}
+	cs := string(c)
+	s := strings.IndexByte(cs, ':')
+	if s < 0 {
+		return
+	}
+	return cs[:s], cs[s+1:], true
+}
+
+func cacheControlMaxAge(hdr string) (time.Duration, bool, error) {
+	for _, field := range strings.Split(hdr, ",") {
+		parts := strings.SplitN(strings.TrimSpace(field), "=", 2)
+		k := strings.ToLower(strings.TrimSpace(parts[0]))
+		if k != "max-age" {
+			continue
+		}
+
+		if len(parts) == 1 {
+			return 0, false, errors.New("max-age has no value")
+		}
+
+		v := strings.TrimSpace(parts[1])
+		if v == "" {
+			return 0, false, errors.New("max-age has empty value")
+		}
+
+		age, err := strconv.Atoi(v)
+		if err != nil {
+			return 0, false, err
+		}
+
+		if age <= 0 {
+			return 0, false, nil
+		}
+
+		return time.Duration(age) * time.Second, true, nil
+	}
+
+	return 0, false, nil
+}
+
+func expires(date, expires string) (time.Duration, bool, error) {
+	if date == "" || expires == "" {
+		return 0, false, nil
+	}
+
+	te, err := time.Parse(time.RFC1123, expires)
+	if err != nil {
+		return 0, false, err
+	}
+
+	td, err := time.Parse(time.RFC1123, date)
+	if err != nil {
+		return 0, false, err
+	}
+
+	ttl := te.Sub(td)
+
+	// headers indicate data already expired, caller should not
+	// have to care about this case
+	if ttl <= 0 {
+		return 0, false, nil
+	}
+
+	return ttl, true, nil
+}
+
+func Cacheable(hdr http.Header) (time.Duration, bool, error) {
+	ttl, ok, err := cacheControlMaxAge(hdr.Get("Cache-Control"))
+	if err != nil || ok {
+		return ttl, ok, err
+	}
+
+	return expires(hdr.Get("Date"), hdr.Get("Expires"))
+}
+
+// MergeQuery appends additional query values to an existing URL.
+func MergeQuery(u url.URL, q url.Values) url.URL {
+	uv := u.Query()
+	for k, vs := range q {
+		for _, v := range vs {
+			uv.Add(k, v)
+		}
+	}
+	u.RawQuery = uv.Encode()
+	return u
+}
+
+// NewResourceLocation appends a resource id to the end of the requested URL path.
+func NewResourceLocation(reqURL *url.URL, id string) string {
+	var u url.URL
+	u = *reqURL
+	u.Path = path.Join(u.Path, id)
+	u.RawQuery = ""
+	u.Fragment = ""
+	return u.String()
+}
+
+// CopyRequest returns a clone of the provided *http.Request.
+// The returned object is a shallow copy of the struct and a
+// deep copy of its Header field.
+func CopyRequest(r *http.Request) *http.Request {
+	r2 := *r
+	r2.Header = make(http.Header)
+	for k, s := range r.Header {
+		r2.Header[k] = s
+	}
+	return &r2
+}

vendor/github.com/coreos/go-oidc/http/http_test.go

@@ -0,0 +1,367 @@
+package http
+
+import (
+	"net/http"
+	"net/url"
+	"reflect"
+	"testing"
+	"time"
+)
+
+func TestCacheControlMaxAgeSuccess(t *testing.T) {
+	tests := []struct {
+		hdr     string
+		wantAge time.Duration
+		wantOK  bool
+	}{
+		{"max-age=12", 12 * time.Second, true},
+		{"max-age=-12", 0, false},
+		{"max-age=0", 0, false},
+		{"public, max-age=12", 12 * time.Second, true},
+		{"public, max-age=40192, must-revalidate", 40192 * time.Second, true},
+		{"public, not-max-age=12, must-revalidate", time.Duration(0), false},
+	}
+
+	for i, tt := range tests {
+		maxAge, ok, err := cacheControlMaxAge(tt.hdr)
+		if err != nil {
+			t.Errorf("case %d: err=%v", i, err)
+		}
+		if tt.wantAge != maxAge {
+			t.Errorf("case %d: want=%d got=%d", i, tt.wantAge, maxAge)
+		}
+		if tt.wantOK != ok {
+			t.Errorf("case %d: incorrect ok value: want=%t got=%t", i, tt.wantOK, ok)
+		}
+	}
+}
+
+func TestCacheControlMaxAgeFail(t *testing.T) {
+	tests := []string{
+		"max-age=aasdf",
+		"max-age=",
+		"max-age",
+	}
+
+	for i, tt := range tests {
+		_, ok, err := cacheControlMaxAge(tt)
+		if ok {
+			t.Errorf("case %d: want ok=false, got true", i)
+		}
+		if err == nil {
+			t.Errorf("case %d: want non-nil err", i)
+		}
+	}
+}
+
+func TestMergeQuery(t *testing.T) {
+	tests := []struct {
+		u string
+		q url.Values
+		w string
+	}{
+		// No values
+		{
+			u: "http://example.com",
+			q: nil,
+			w: "http://example.com",
+		},
+		// No additional values
+		{
+			u: "http://example.com?foo=bar",
+			q: nil,
+			w: "http://example.com?foo=bar",
+		},
+		// Simple addition
+		{
+			u: "http://example.com",
+			q: url.Values{
+				"foo": []string{"bar"},
+			},
+			w: "http://example.com?foo=bar",
+		},
+		// Addition with existing values
+		{
+			u: "http://example.com?dog=boo",
+			q: url.Values{
+				"foo": []string{"bar"},
+			},
+			w: "http://example.com?dog=boo&foo=bar",
+		},
+		// Merge
+		{
+			u: "http://example.com?dog=boo",
+			q: url.Values{
+				"dog": []string{"elroy"},
+			},
+			w: "http://example.com?dog=boo&dog=elroy",
+		},
+		// Add and merge
+		{
+			u: "http://example.com?dog=boo",
+			q: url.Values{
+				"dog": []string{"elroy"},
+				"foo": []string{"bar"},
+			},
+			w: "http://example.com?dog=boo&dog=elroy&foo=bar",
+		},
+		// Multivalue merge
+		{
+			u: "http://example.com?dog=boo",
+			q: url.Values{
+				"dog": []string{"elroy", "penny"},
+			},
+			w: "http://example.com?dog=boo&dog=elroy&dog=penny",
+		},
+	}
+
+	for i, tt := range tests {
+		ur, err := url.Parse(tt.u)
+		if err != nil {
+			t.Errorf("case %d: failed parsing test url: %v, error: %v", i, tt.u, err)
+		}
+
+		got := MergeQuery(*ur, tt.q)
+		want, err := url.Parse(tt.w)
+		if err != nil {
+			t.Errorf("case %d: failed parsing want url: %v, error: %v", i, tt.w, err)
+		}
+
+		if !reflect.DeepEqual(*want, got) {
+			t.Errorf("case %d: want: %v, got: %v", i, *want, got)
+		}
+	}
+}
+
+func TestExpiresPass(t *testing.T) {
+	tests := []struct {
+		date    string
+		exp     string
+		wantTTL time.Duration
+		wantOK  bool
+	}{
+		// Expires and Date properly set
+		{
+			date:    "Thu, 01 Dec 1983 22:00:00 GMT",
+			exp:     "Fri, 02 Dec 1983 01:00:00 GMT",
+			wantTTL: 10800 * time.Second,
+			wantOK:  true,
+		},
+		// empty headers
+		{
+			date:   "",
+			exp:    "",
+			wantOK: false,
+		},
+		// lack of Expirs short-ciruits Date parsing
+		{
+			date:   "foo",
+			exp:    "",
+			wantOK: false,
+		},
+		// lack of Date short-ciruits Expires parsing
+		{
+			date:   "",
+			exp:    "foo",
+			wantOK: false,
+		},
+		// no Date
+		{
+			exp:     "Thu, 01 Dec 1983 22:00:00 GMT",
+			wantTTL: 0,
+			wantOK:  false,
+		},
+		// no Expires
+		{
+			date:    "Thu, 01 Dec 1983 22:00:00 GMT",
+			wantTTL: 0,
+			wantOK:  false,
+		},
+		// Expires < Date
+		{
+			date:    "Fri, 02 Dec 1983 01:00:00 GMT",
+			exp:     "Thu, 01 Dec 1983 22:00:00 GMT",
+			wantTTL: 0,
+			wantOK:  false,
+		},
+	}
+
+	for i, tt := range tests {
+		ttl, ok, err := expires(tt.date, tt.exp)
+		if err != nil {
+			t.Errorf("case %d: err=%v", i, err)
+		}
+		if tt.wantTTL != ttl {
+			t.Errorf("case %d: want=%d got=%d", i, tt.wantTTL, ttl)
+		}
+		if tt.wantOK != ok {
+			t.Errorf("case %d: incorrect ok value: want=%t got=%t", i, tt.wantOK, ok)
+		}
+	}
+}
+
+func TestExpiresFail(t *testing.T) {
+	tests := []struct {
+		date string
+		exp  string
+	}{
+		// malformed Date header
+		{
+			date: "foo",
+			exp:  "Fri, 02 Dec 1983 01:00:00 GMT",
+		},
+		// malformed exp header
+		{
+			date: "Fri, 02 Dec 1983 01:00:00 GMT",
+			exp:  "bar",
+		},
+	}
+
+	for i, tt := range tests {
+		_, _, err := expires(tt.date, tt.exp)
+		if err == nil {
+			t.Errorf("case %d: expected non-nil error", i)
+		}
+	}
+}
+
+func TestCacheablePass(t *testing.T) {
+	tests := []struct {
+		headers http.Header
+		wantTTL time.Duration
+		wantOK  bool
+	}{
+		// valid Cache-Control
+		{
+			headers: http.Header{
+				"Cache-Control": []string{"max-age=100"},
+			},
+			wantTTL: 100 * time.Second,
+			wantOK:  true,
+		},
+		// valid Date/Expires
+		{
+			headers: http.Header{
+				"Date":    []string{"Thu, 01 Dec 1983 22:00:00 GMT"},
+				"Expires": []string{"Fri, 02 Dec 1983 01:00:00 GMT"},
+			},
+			wantTTL: 10800 * time.Second,
+			wantOK:  true,
+		},
+		// Cache-Control supersedes Date/Expires
+		{
+			headers: http.Header{
+				"Cache-Control": []string{"max-age=100"},
+				"Date":          []string{"Thu, 01 Dec 1983 22:00:00 GMT"},
+				"Expires":       []string{"Fri, 02 Dec 1983 01:00:00 GMT"},
+			},
+			wantTTL: 100 * time.Second,
+			wantOK:  true,
+		},
+		// no caching headers
+		{
+			headers: http.Header{},
+			wantOK:  false,
+		},
+	}
+
+	for i, tt := range tests {
+		ttl, ok, err := Cacheable(tt.headers)
+		if err != nil {
+			t.Errorf("case %d: err=%v", i, err)
+			continue
+		}
+		if tt.wantTTL != ttl {
+			t.Errorf("case %d: want=%d got=%d", i, tt.wantTTL, ttl)
+		}
+		if tt.wantOK != ok {
+			t.Errorf("case %d: incorrect ok value: want=%t got=%t", i, tt.wantOK, ok)
+		}
+	}
+}
+
+func TestCacheableFail(t *testing.T) {
+	tests := []http.Header{
+		// invalid Cache-Control short-circuits
+		http.Header{
+			"Cache-Control": []string{"max-age"},
+			"Date":          []string{"Thu, 01 Dec 1983 22:00:00 GMT"},
+			"Expires":       []string{"Fri, 02 Dec 1983 01:00:00 GMT"},
+		},
+		// no Cache-Control, invalid Expires
+		http.Header{
+			"Date":    []string{"Thu, 01 Dec 1983 22:00:00 GMT"},
+			"Expires": []string{"boo"},
+		},
+	}
+
+	for i, tt := range tests {
+		_, _, err := Cacheable(tt)
+		if err == nil {
+			t.Errorf("case %d: want non-nil err", i)
+		}
+	}
+}
+
+func TestNewResourceLocation(t *testing.T) {
+	tests := []struct {
+		ru   *url.URL
+		id   string
+		want string
+	}{
+		{
+			ru: &url.URL{
+				Scheme: "http",
+				Host:   "example.com",
+			},
+			id:   "foo",
+			want: "http://example.com/foo",
+		},
+		// https
+		{
+			ru: &url.URL{
+				Scheme: "https",
+				Host:   "example.com",
+			},
+			id:   "foo",
+			want: "https://example.com/foo",
+		},
+		// with path
+		{
+			ru: &url.URL{
+				Scheme: "http",
+				Host:   "example.com",
+				Path:   "one/two/three",
+			},
+			id:   "foo",
+			want: "http://example.com/one/two/three/foo",
+		},
+		// with fragment
+		{
+			ru: &url.URL{
+				Scheme:   "http",
+				Host:     "example.com",
+				Fragment: "frag",
+			},
+			id:   "foo",
+			want: "http://example.com/foo",
+		},
+		// with query
+		{
+			ru: &url.URL{
+				Scheme:   "http",
+				Host:     "example.com",
+				RawQuery: "dog=elroy",
+			},
+			id:   "foo",
+			want: "http://example.com/foo",
+		},
+	}
+
+	for i, tt := range tests {
+		got := NewResourceLocation(tt.ru, tt.id)
+		if tt.want != got {
+			t.Errorf("case %d: want=%s, got=%s", i, tt.want, got)
+		}
+	}
+}

vendor/github.com/coreos/go-oidc/http/url.go

@@ -0,0 +1,29 @@
+package http
+
+import (
+	"errors"
+	"net/url"
+)
+
+// ParseNonEmptyURL checks that a string is a parsable URL which is also not empty
+// since `url.Parse("")` does not return an error. Must contian a scheme and a host.
+func ParseNonEmptyURL(u string) (*url.URL, error) {
+	if u == "" {
+		return nil, errors.New("url is empty")
+	}
+
+	ur, err := url.Parse(u)
+	if err != nil {
+		return nil, err
+	}
+
+	if ur.Scheme == "" {
+		return nil, errors.New("url scheme is empty")
+	}
+
+	if ur.Host == "" {
+		return nil, errors.New("url host is empty")
+	}
+
+	return ur, nil
+}

vendor/github.com/coreos/go-oidc/http/url_test.go

@@ -0,0 +1,49 @@
+package http
+
+import (
+	"net/url"
+	"testing"
+)
+
+func TestParseNonEmptyURL(t *testing.T) {
+	tests := []struct {
+		u  string
+		ok bool
+	}{
+		{"", false},
+		{"http://", false},
+		{"example.com", false},
+		{"example", false},
+		{"http://example", true},
+		{"http://example:1234", true},
+		{"http://example.com", true},
+		{"http://example.com:1234", true},
+	}
+
+	for i, tt := range tests {
+		u, err := ParseNonEmptyURL(tt.u)
+		if err != nil {
+			t.Logf("err: %v", err)
+			if tt.ok {
+				t.Errorf("case %d: unexpected error: %v", i, err)
+			} else {
+				continue
+			}
+		}
+
+		if !tt.ok {
+			t.Errorf("case %d: expected error but got none", i)
+			continue
+		}
+
+		uu, err := url.Parse(tt.u)
+		if err != nil {
+			t.Errorf("case %d: unexpected error: %v", i, err)
+			continue
+		}
+
+		if uu.String() != u.String() {
+			t.Errorf("case %d: incorrect url value, want: %q, got: %q", i, uu.String(), u.String())
+		}
+	}
+}

vendor/github.com/coreos/go-oidc/jose.go

@@ -0,0 +1,20 @@
+// +build !golint
+
+// Don't lint this file. We don't want to have to add a comment to each constant.
+
+package oidc
+
+const (
+	// JOSE asymmetric signing algorithm values as defined by RFC 7518
+	//
+	// see: https://tools.ietf.org/html/rfc7518#section-3.1
+	RS256 = "RS256" // RSASSA-PKCS-v1.5 using SHA-256
+	RS384 = "RS384" // RSASSA-PKCS-v1.5 using SHA-384
+	RS512 = "RS512" // RSASSA-PKCS-v1.5 using SHA-512
+	ES256 = "ES256" // ECDSA using P-256 and SHA-256
+	ES384 = "ES384" // ECDSA using P-384 and SHA-384
+	ES512 = "ES512" // ECDSA using P-521 and SHA-512
+	PS256 = "PS256" // RSASSA-PSS using SHA256 and MGF1-SHA256
+	PS384 = "PS384" // RSASSA-PSS using SHA384 and MGF1-SHA384
+	PS512 = "PS512" // RSASSA-PSS using SHA512 and MGF1-SHA512
+)

vendor/github.com/coreos/go-oidc/jose/claims.go

@@ -0,0 +1,126 @@
+package jose
+
+import (
+	"encoding/json"
+	"fmt"
+	"math"
+	"time"
+)
+
+type Claims map[string]interface{}
+
+func (c Claims) Add(name string, value interface{}) {
+	c[name] = value
+}
+
+func (c Claims) StringClaim(name string) (string, bool, error) {
+	cl, ok := c[name]
+	if !ok {
+		return "", false, nil
+	}
+
+	v, ok := cl.(string)
+	if !ok {
+		return "", false, fmt.Errorf("unable to parse claim as string: %v", name)
+	}
+
+	return v, true, nil
+}
+
+func (c Claims) StringsClaim(name string) ([]string, bool, error) {
+	cl, ok := c[name]
+	if !ok {
+		return nil, false, nil
+	}
+
+	if v, ok := cl.([]string); ok {
+		return v, true, nil
+	}
+
+	// When unmarshaled, []string will become []interface{}.
+	if v, ok := cl.([]interface{}); ok {
+		var ret []string
+		for _, vv := range v {
+			str, ok := vv.(string)
+			if !ok {
+				return nil, false, fmt.Errorf("unable to parse claim as string array: %v", name)
+			}
+			ret = append(ret, str)
+		}
+		return ret, true, nil
+	}
+
+	return nil, false, fmt.Errorf("unable to parse claim as string array: %v", name)
+}
+
+func (c Claims) Int64Claim(name string) (int64, bool, error) {
+	cl, ok := c[name]
+	if !ok {
+		return 0, false, nil
+	}
+
+	v, ok := cl.(int64)
+	if !ok {
+		vf, ok := cl.(float64)
+		if !ok {
+			return 0, false, fmt.Errorf("unable to parse claim as int64: %v", name)
+		}
+		v = int64(vf)
+	}
+
+	return v, true, nil
+}
+
+func (c Claims) Float64Claim(name string) (float64, bool, error) {
+	cl, ok := c[name]
+	if !ok {
+		return 0, false, nil
+	}
+
+	v, ok := cl.(float64)
+	if !ok {
+		vi, ok := cl.(int64)
+		if !ok {
+			return 0, false, fmt.Errorf("unable to parse claim as float64: %v", name)
+		}
+		v = float64(vi)
+	}
+
+	return v, true, nil
+}
+
+func (c Claims) TimeClaim(name string) (time.Time, bool, error) {
+	v, ok, err := c.Float64Claim(name)
+	if !ok || err != nil {
+		return time.Time{}, ok, err
+	}
+
+	s := math.Trunc(v)
+	ns := (v - s) * math.Pow(10, 9)
+	return time.Unix(int64(s), int64(ns)).UTC(), true, nil
+}
+
+func decodeClaims(payload []byte) (Claims, error) {
+	var c Claims
+	if err := json.Unmarshal(payload, &c); err != nil {
+		return nil, fmt.Errorf("malformed JWT claims, unable to decode: %v", err)
+	}
+	return c, nil
+}
+
+func marshalClaims(c Claims) ([]byte, error) {
+	b, err := json.Marshal(c)
+	if err != nil {
+		return nil, err
+	}
+	return b, nil
+}
+
+func encodeClaims(c Claims) (string, error) {
+	b, err := marshalClaims(c)
+	if err != nil {
+		return "", err
+	}
+
+	return encodeSegment(b), nil
+}

vendor/github.com/coreos/go-oidc/jose/claims_test.go

@@ -0,0 +1,328 @@
+package jose
+
+import (
+	"reflect"
+	"testing"
+	"time"
+)
+
+func TestString(t *testing.T) {
+	tests := []struct {
+		cl  Claims
+		key string
+		ok  bool
+		err bool
+		val string
+	}{
+		// ok, no err, claim exists
+		{
+			cl: Claims{
+				"foo": "bar",
+			},
+			key: "foo",
+			val: "bar",
+			ok:  true,
+			err: false,
+		},
+		// no claims
+		{
+			cl:  Claims{},
+			key: "foo",
+			val: "",
+			ok:  false,
+			err: false,
+		},
+		// missing claim
+		{
+			cl: Claims{
+				"foo": "bar",
+			},
+			key: "xxx",
+			val: "",
+			ok:  false,
+			err: false,
+		},
+		// unparsable: type
+		{
+			cl: Claims{
+				"foo": struct{}{},
+			},
+			key: "foo",
+			val: "",
+			ok:  false,
+			err: true,
+		},
+		// unparsable: nil value
+		{
+			cl: Claims{
+				"foo": nil,
+			},
+			key: "foo",
+			val: "",
+			ok:  false,
+			err: true,
+		},
+	}
+
+	for i, tt := range tests {
+		val, ok, err := tt.cl.StringClaim(tt.key)
+
+		if tt.err && err == nil {
+			t.Errorf("case %d: want err=non-nil, got err=nil", i)
+		} else if !tt.err && err != nil {
+			t.Errorf("case %d: want err=nil, got err=%v", i, err)
+		}
+
+		if tt.ok != ok {
+			t.Errorf("case %d: want ok=%v, got ok=%v", i, tt.ok, ok)
+		}
+
+		if tt.val != val {
+			t.Errorf("case %d: want val=%v, got val=%v", i, tt.val, val)
+		}
+	}
+}
+
+func TestInt64(t *testing.T) {
+	tests := []struct {
+		cl  Claims
+		key string
+		ok  bool
+		err bool
+		val int64
+	}{
+		// ok, no err, claim exists
+		{
+			cl: Claims{
+				"foo": int64(100),
+			},
+			key: "foo",
+			val: int64(100),
+			ok:  true,
+			err: false,
+		},
+		// no claims
+		{
+			cl:  Claims{},
+			key: "foo",
+			val: 0,
+			ok:  false,
+			err: false,
+		},
+		// missing claim
+		{
+			cl: Claims{
+				"foo": "bar",
+			},
+			key: "xxx",
+			val: 0,
+			ok:  false,
+			err: false,
+		},
+		// unparsable: type
+		{
+			cl: Claims{
+				"foo": struct{}{},
+			},
+			key: "foo",
+			val: 0,
+			ok:  false,
+			err: true,
+		},
+		// unparsable: nil value
+		{
+			cl: Claims{
+				"foo": nil,
+			},
+			key: "foo",
+			val: 0,
+			ok:  false,
+			err: true,
+		},
+	}
+
+	for i, tt := range tests {
+		val, ok, err := tt.cl.Int64Claim(tt.key)
+
+		if tt.err && err == nil {
+			t.Errorf("case %d: want err=non-nil, got err=nil", i)
+		} else if !tt.err && err != nil {
+			t.Errorf("case %d: want err=nil, got err=%v", i, err)
+		}
+
+		if tt.ok != ok {
+			t.Errorf("case %d: want ok=%v, got ok=%v", i, tt.ok, ok)
+		}
+
+		if tt.val != val {
+			t.Errorf("case %d: want val=%v, got val=%v", i, tt.val, val)
+		}
+	}
+}
+
+func TestTime(t *testing.T) {
+	now := time.Now().UTC()
+	unixNow := now.Unix()
+
+	tests := []struct {
+		cl  Claims
+		key string
+		ok  bool
+		err bool
+		val time.Time
+	}{
+		// ok, no err, claim exists
+		{
+			cl: Claims{
+				"foo": unixNow,
+			},
+			key: "foo",
+			val: time.Unix(now.Unix(), 0).UTC(),
+			ok:  true,
+			err: false,
+		},
+		// no claims
+		{
+			cl:  Claims{},
+			key: "foo",
+			val: time.Time{},
+			ok:  false,
+			err: false,
+		},
+		// missing claim
+		{
+			cl: Claims{
+				"foo": "bar",
+			},
+			key: "xxx",
+			val: time.Time{},
+			ok:  false,
+			err: false,
+		},
+		// unparsable: type
+		{
+			cl: Claims{
+				"foo": struct{}{},
+			},
+			key: "foo",
+			val: time.Time{},
+			ok:  false,
+			err: true,
+		},
+		// unparsable: nil value
+		{
+			cl: Claims{
+				"foo": nil,
+			},
+			key: "foo",
+			val: time.Time{},
+			ok:  false,
+			err: true,
+		},
+	}
+
+	for i, tt := range tests {
+		val, ok, err := tt.cl.TimeClaim(tt.key)
+
+		if tt.err && err == nil {
+			t.Errorf("case %d: want err=non-nil, got err=nil", i)
+		} else if !tt.err && err != nil {
+			t.Errorf("case %d: want err=nil, got err=%v", i, err)
+		}
+
+		if tt.ok != ok {
+			t.Errorf("case %d: want ok=%v, got ok=%v", i, tt.ok, ok)
+		}
+
+		if tt.val != val {
+			t.Errorf("case %d: want val=%v, got val=%v", i, tt.val, val)
+		}
+	}
+}
+
+func TestStringArray(t *testing.T) {
+	tests := []struct {
+		cl  Claims
+		key string
+		ok  bool
+		err bool
+		val []string
+	}{
+		// ok, no err, claim exists
+		{
+			cl: Claims{
+				"foo": []string{"bar", "faf"},
+			},
+			key: "foo",
+			val: []string{"bar", "faf"},
+			ok:  true,
+			err: false,
+		},
+		// ok, no err, []interface{}
+		{
+			cl: Claims{
+				"foo": []interface{}{"bar", "faf"},
+			},
+			key: "foo",
+			val: []string{"bar", "faf"},
+			ok:  true,
+			err: false,
+		},
+		// no claims
+		{
+			cl:  Claims{},
+			key: "foo",
+			val: nil,
+			ok:  false,
+			err: false,
+		},
+		// missing claim
+		{
+			cl: Claims{
+				"foo": "bar",
+			},
+			key: "xxx",
+			val: nil,
+			ok:  false,
+			err: false,
+		},
+		// unparsable: type
+		{
+			cl: Claims{
+				"foo": struct{}{},
+			},
+			key: "foo",
+			val: nil,
+			ok:  false,
+			err: true,
+		},
+		// unparsable: nil value
+		{
+			cl: Claims{
+				"foo": nil,
+			},
+			key: "foo",
+			val: nil,
+			ok:  false,
+			err: true,
+		},
+	}
+
+	for i, tt := range tests {
+		val, ok, err := tt.cl.StringsClaim(tt.key)
+
+		if tt.err && err == nil {
+			t.Errorf("case %d: want err=non-nil, got err=nil", i)
+		} else if !tt.err && err != nil {
+			t.Errorf("case %d: want err=nil, got err=%v", i, err)
+		}
+
+		if tt.ok != ok {
+			t.Errorf("case %d: want ok=%v, got ok=%v", i, tt.ok, ok)
+		}
+
+		if !reflect.DeepEqual(tt.val, val) {
+			t.Errorf("case %d: want val=%v, got val=%v", i, tt.val, val)
+		}
+	}
+}

vendor/github.com/coreos/go-oidc/jose/doc.go

@@ -0,0 +1,2 @@
+// Package jose is DEPRECATED. Use gopkg.in/square/go-jose.v2 instead.
+package jose

vendor/github.com/coreos/go-oidc/jose/jose.go

@@ -0,0 +1,112 @@
+package jose
+
+import (
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+	"strings"
+)
+
+const (
+	HeaderMediaType    = "typ"
+	HeaderKeyAlgorithm = "alg"
+	HeaderKeyID        = "kid"
+)
+
+const (
+	// Encryption Algorithm Header Parameter Values for JWS
+	// See: https://tools.ietf.org/html/draft-ietf-jose-json-web-algorithms-40#page-6
+	AlgHS256 = "HS256"
+	AlgHS384 = "HS384"
+	AlgHS512 = "HS512"
+	AlgRS256 = "RS256"
+	AlgRS384 = "RS384"
+	AlgRS512 = "RS512"
+	AlgES256 = "ES256"
+	AlgES384 = "ES384"
+	AlgES512 = "ES512"
+	AlgPS256 = "PS256"
+	AlgPS384 = "PS384"
+	AlgPS512 = "PS512"
+	AlgNone  = "none"
+)
+
+const (
+	// Algorithm Header Parameter Values for JWE
+	// See: https://tools.ietf.org/html/draft-ietf-jose-json-web-algorithms-40#section-4.1
+	AlgRSA15            = "RSA1_5"
+	AlgRSAOAEP          = "RSA-OAEP"
+	AlgRSAOAEP256       = "RSA-OAEP-256"
+	AlgA128KW           = "A128KW"
+	AlgA192KW           = "A192KW"
+	AlgA256KW           = "A256KW"
+	AlgDir              = "dir"
+	AlgECDHES           = "ECDH-ES"
+	AlgECDHESA128KW     = "ECDH-ES+A128KW"
+	AlgECDHESA192KW     = "ECDH-ES+A192KW"
+	AlgECDHESA256KW     = "ECDH-ES+A256KW"
+	AlgA128GCMKW        = "A128GCMKW"
+	AlgA192GCMKW        = "A192GCMKW"
+	AlgA256GCMKW        = "A256GCMKW"
+	AlgPBES2HS256A128KW = "PBES2-HS256+A128KW"
+	AlgPBES2HS384A192KW = "PBES2-HS384+A192KW"
+	AlgPBES2HS512A256KW = "PBES2-HS512+A256KW"
+)
+
+const (
+	// Encryption Algorithm Header Parameter Values for JWE
+	// See: https://tools.ietf.org/html/draft-ietf-jose-json-web-algorithms-40#page-22
+	EncA128CBCHS256 = "A128CBC-HS256"
+	EncA128CBCHS384 = "A128CBC-HS384"
+	EncA256CBCHS512 = "A256CBC-HS512"
+	EncA128GCM      = "A128GCM"
+	EncA192GCM      = "A192GCM"
+	EncA256GCM      = "A256GCM"
+)
+
+type JOSEHeader map[string]string
+
+func (j JOSEHeader) Validate() error {
+	if _, exists := j[HeaderKeyAlgorithm]; !exists {
+		return fmt.Errorf("header missing %q parameter", HeaderKeyAlgorithm)
+	}
+
+	return nil
+}
+
+func decodeHeader(seg string) (JOSEHeader, error) {
+	b, err := decodeSegment(seg)
+	if err != nil {
+		return nil, err
+	}
+
+	var h JOSEHeader
+	err = json.Unmarshal(b, &h)
+	if err != nil {
+		return nil, err
+	}
+
+	return h, nil
+}
+
+func encodeHeader(h JOSEHeader) (string, error) {
+	b, err := json.Marshal(h)
+	if err != nil {
+		return "", err
+	}
+
+	return encodeSegment(b), nil
+}
+
+// Decode JWT specific base64url encoding with padding stripped
+func decodeSegment(seg string) ([]byte, error) {
+	if l := len(seg) % 4; l != 0 {
+		seg += strings.Repeat("=", 4-l)
+	}
+	return base64.URLEncoding.DecodeString(seg)
+}
+
+// Encode JWT specific base64url encoding with padding stripped
+func encodeSegment(seg []byte) string {
+	return strings.TrimRight(base64.URLEncoding.EncodeToString(seg), "=")
+}

vendor/github.com/coreos/go-oidc/jose/jwk.go

@@ -0,0 +1,135 @@
+package jose
+
+import (
+	"bytes"
+	"encoding/base64"
+	"encoding/binary"
+	"encoding/json"
+	"math/big"
+	"strings"
+)
+
+// JSON Web Key
+// https://tools.ietf.org/html/draft-ietf-jose-json-web-key-36#page-5
+type JWK struct {
+	ID       string
+	Type     string
+	Alg      string
+	Use      string
+	Exponent int
+	Modulus  *big.Int
+	Secret   []byte
+}
+
+type jwkJSON struct {
+	ID       string `json:"kid"`
+	Type     string `json:"kty"`
+	Alg      string `json:"alg"`
+	Use      string `json:"use"`
+	Exponent string `json:"e"`
+	Modulus  string `json:"n"`
+}
+
+func (j *JWK) MarshalJSON() ([]byte, error) {
+	t := jwkJSON{
+		ID:       j.ID,
+		Type:     j.Type,
+		Alg:      j.Alg,
+		Use:      j.Use,
+		Exponent: encodeExponent(j.Exponent),
+		Modulus:  encodeModulus(j.Modulus),
+	}
+
+	return json.Marshal(&t)
+}
+
+func (j *JWK) UnmarshalJSON(data []byte) error {
+	var t jwkJSON
+	err := json.Unmarshal(data, &t)
+	if err != nil {
+		return err
+	}
+
+	e, err := decodeExponent(t.Exponent)
+	if err != nil {
+		return err
+	}
+
+	n, err := decodeModulus(t.Modulus)
+	if err != nil {
+		return err
+	}
+
+	j.ID = t.ID
+	j.Type = t.Type
+	j.Alg = t.Alg
+	j.Use = t.Use
+	j.Exponent = e
+	j.Modulus = n
+
+	return nil
+}
+
+type JWKSet struct {
+	Keys []JWK `json:"keys"`
+}
+
+func decodeExponent(e string) (int, error) {
+	decE, err := decodeBase64URLPaddingOptional(e)
+	if err != nil {
+		return 0, err
+	}
+	var eBytes []byte
+	if len(decE) < 8 {
+		eBytes = make([]byte, 8-len(decE), 8)
+		eBytes = append(eBytes, decE...)
+	} else {
+		eBytes = decE
+	}
+	eReader := bytes.NewReader(eBytes)
+	var E uint64
+	err = binary.Read(eReader, binary.BigEndian, &E)
+	if err != nil {
+		return 0, err
+	}
+	return int(E), nil
+}
+
+func encodeExponent(e int) string {
+	b := make([]byte, 8)
+	binary.BigEndian.PutUint64(b, uint64(e))
+	var idx int
+	for ; idx < 8; idx++ {
+		if b[idx] != 0x0 {
+			break
+		}
+	}
+	return base64.RawURLEncoding.EncodeToString(b[idx:])
+}
+
+// Turns a URL encoded modulus of a key into a big int.
+func decodeModulus(n string) (*big.Int, error) {
+	decN, err := decodeBase64URLPaddingOptional(n)
+	if err != nil {
+		return nil, err
+	}
+	N := big.NewInt(0)
+	N.SetBytes(decN)
+	return N, nil
+}
+
+func encodeModulus(n *big.Int) string {
+	return base64.RawURLEncoding.EncodeToString(n.Bytes())
+}
+
+// decodeBase64URLPaddingOptional decodes Base64 whether there is padding or not.
+// The stdlib version currently doesn't handle this.
+// We can get rid of this is if this bug:
+//   https://github.com/golang/go/issues/4237
+// ever closes.
+func decodeBase64URLPaddingOptional(e string) ([]byte, error) {
+	if m := len(e) % 4; m != 0 {
+		e += strings.Repeat("=", 4-m)
+	}
+	return base64.URLEncoding.DecodeString(e)
+}

vendor/github.com/coreos/go-oidc/jose/jwk_test.go

@@ -0,0 +1,64 @@
+package jose
+
+import (
+	"testing"
+)
+
+func TestDecodeBase64URLPaddingOptional(t *testing.T) {
+	tests := []struct {
+		encoded string
+		decoded string
+		err     bool
+	}{
+		{
+			// With padding
+			encoded: "VGVjdG9uaWM=",
+			decoded: "Tectonic",
+		},
+		{
+			// Without padding
+			encoded: "VGVjdG9uaWM",
+			decoded: "Tectonic",
+		},
+		{
+			// Even More padding
+			encoded: "VGVjdG9uaQ==",
+			decoded: "Tectoni",
+		},
+		{
+			// And take it away!
+			encoded: "VGVjdG9uaQ",
+			decoded: "Tectoni",
+		},
+		{
+			// Too much padding.
+			encoded: "VGVjdG9uaWNh=",
+			decoded: "",
+			err:     true,
+		},
+		{
+			// Too much padding.
+			encoded: "VGVjdG9uaWNh=",
+			decoded: "",
+			err:     true,
+		},
+	}
+
+	for i, tt := range tests {
+		got, err := decodeBase64URLPaddingOptional(tt.encoded)
+		if tt.err {
+			if err == nil {
+				t.Errorf("case %d: expected non-nil err", i)
+			}
+			continue
+		}
+
+		if err != nil {
+			t.Errorf("case %d: want nil err, got: %v", i, err)
+		}
+
+		if string(got) != tt.decoded {
+			t.Errorf("case %d: want=%q, got=%q", i, tt.decoded, got)
+		}
+	}
+}

vendor/github.com/coreos/go-oidc/jose/jws.go

@@ -0,0 +1,51 @@
+package jose
+
+import (
+	"fmt"
+	"strings"
+)
+
+type JWS struct {
+	RawHeader  string
+	Header     JOSEHeader
+	RawPayload string
+	Payload    []byte
+	Signature  []byte
+}
+
+// Given a raw encoded JWS token parses it and verifies the structure.
+func ParseJWS(raw string) (JWS, error) {
+	parts := strings.Split(raw, ".")
+	if len(parts) != 3 {
+		return JWS{}, fmt.Errorf("malformed JWS, only %d segments", len(parts))
+	}
+
+	rawSig := parts[2]
+	jws := JWS{
+		RawHeader:  parts[0],
+		RawPayload: parts[1],
+	}
+
+	header, err := decodeHeader(jws.RawHeader)
+	if err != nil {
+		return JWS{}, fmt.Errorf("malformed JWS, unable to decode header, %s", err)
+	}
+	if err = header.Validate(); err != nil {
+		return JWS{}, fmt.Errorf("malformed JWS, %s", err)
+	}
+	jws.Header = header
+
+	payload, err := decodeSegment(jws.RawPayload)
+	if err != nil {
+		return JWS{}, fmt.Errorf("malformed JWS, unable to decode payload: %s", err)
+	}
+	jws.Payload = payload
+
+	sig, err := decodeSegment(rawSig)
+	if err != nil {
+		return JWS{}, fmt.Errorf("malformed JWS, unable to decode signature: %s", err)
+	}
+	jws.Signature = sig
+
+	return jws, nil
+}

vendor/github.com/coreos/go-oidc/jose/jws_test.go

@@ -0,0 +1,74 @@
+package jose
+
+import (
+	"strings"
+	"testing"
+)
+
+type testCase struct{ t string }
+
+var validInput []testCase
+
+var invalidInput []testCase
+
+func init() {
+	validInput = []testCase{
+		{
+			"eyJ0eXAiOiJKV1QiLA0KICJhbGciOiJIUzI1NiJ9.eyJpc3MiOiJqb2UiLA0KICJleHAiOjEzMDA4MTkzODAsDQogImh0dHA6Ly9leGFtcGxlLmNvbS9pc19yb290Ijp0cnVlfQ.dBjftJeZ4CVP-mB92K27uhbUJU1p1r_wW1gFWFOEjXk",
+		},
+	}
+
+	invalidInput = []testCase{
+		// empty
+		{
+			"",
+		},
+		// undecodeable
+		{
+			"aaa.bbb.ccc",
+		},
+		// missing parts
+		{
+			"aaa",
+		},
+		// missing parts
+		{
+			"aaa.bbb",
+		},
+		// too many parts
+		{
+			"aaa.bbb.ccc.ddd",
+		},
+		// invalid header
+		// EncodeHeader(map[string]string{"foo": "bar"})
+		{
+			"eyJmb28iOiJiYXIifQ.bbb.ccc",
+		},
+	}
+}
+
+func TestParseJWS(t *testing.T) {
+	for i, tt := range validInput {
+		jws, err := ParseJWS(tt.t)
+		if err != nil {
+			t.Errorf("test: %d. expected: valid, actual: invalid", i)
+		}
+
+		expectedHeader := strings.Split(tt.t, ".")[0]
+		if jws.RawHeader != expectedHeader {
+			t.Errorf("test: %d. expected: %s, actual: %s", i, expectedHeader, jws.RawHeader)
+		}
+
+		expectedPayload := strings.Split(tt.t, ".")[1]
+		if jws.RawPayload != expectedPayload {
+			t.Errorf("test: %d. expected: %s, actual: %s", i, expectedPayload, jws.RawPayload)
+		}
+	}
+
+	for i, tt := range invalidInput {
+		_, err := ParseJWS(tt.t)
+		if err == nil {
+			t.Errorf("test: %d. expected: invalid, actual: valid", i)
+		}
+	}
+}

vendor/github.com/coreos/go-oidc/jose/jwt.go

@@ -0,0 +1,82 @@
+package jose
+
+import "strings"
+
+type JWT JWS
+
+func ParseJWT(token string) (jwt JWT, err error) {
+	jws, err := ParseJWS(token)
+	if err != nil {
+		return
+	}
+
+	return JWT(jws), nil
+}
+
+func NewJWT(header JOSEHeader, claims Claims) (jwt JWT, err error) {
+	jwt = JWT{}
+
+	jwt.Header = header
+	jwt.Header[HeaderMediaType] = "JWT"
+
+	claimBytes, err := marshalClaims(claims)
+	if err != nil {
+		return
+	}
+	jwt.Payload = claimBytes
+
+	eh, err := encodeHeader(header)
+	if err != nil {
+		return
+	}
+	jwt.RawHeader = eh
+
+	ec, err := encodeClaims(claims)
+	if err != nil {
+		return
+	}
+	jwt.RawPayload = ec
+
+	return
+}
+
+func (j *JWT) KeyID() (string, bool) {
+	kID, ok := j.Header[HeaderKeyID]
+	return kID, ok
+}
+
+func (j *JWT) Claims() (Claims, error) {
+	return decodeClaims(j.Payload)
+}
+
+// Encoded data part of the token which may be signed.
+func (j *JWT) Data() string {
+	return strings.Join([]string{j.RawHeader, j.RawPayload}, ".")
+}
+
+// Full encoded JWT token string in format: header.claims.signature
+func (j *JWT) Encode() string {
+	d := j.Data()
+	s := encodeSegment(j.Signature)
+	return strings.Join([]string{d, s}, ".")
+}
+
+func NewSignedJWT(claims Claims, s Signer) (*JWT, error) {
+	header := JOSEHeader{
+		HeaderKeyAlgorithm: s.Alg(),
+		HeaderKeyID:        s.ID(),
+	}
+
+	jwt, err := NewJWT(header, claims)
+	if err != nil {
+		return nil, err
+	}
+
+	sig, err := s.Sign([]byte(jwt.Data()))
+	if err != nil {
+		return nil, err
+	}
+	jwt.Signature = sig
+
+	return &jwt, nil
+}

vendor/github.com/coreos/go-oidc/jose/jwt_test.go

@@ -0,0 +1,94 @@
+package jose
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestParseJWT(t *testing.T) {
+	tests := []struct {
+		r string
+		h JOSEHeader
+		c Claims
+	}{
+		{
+			// Example from JWT spec:
+			// http://self-issued.info/docs/draft-ietf-oauth-json-web-token.html#ExampleJWT
+			"eyJ0eXAiOiJKV1QiLA0KICJhbGciOiJIUzI1NiJ9.eyJpc3MiOiJqb2UiLA0KICJleHAiOjEzMDA4MTkzODAsDQogImh0dHA6Ly9leGFtcGxlLmNvbS9pc19yb290Ijp0cnVlfQ.dBjftJeZ4CVP-mB92K27uhbUJU1p1r_wW1gFWFOEjXk",
+			JOSEHeader{
+				HeaderMediaType:    "JWT",
+				HeaderKeyAlgorithm: "HS256",
+			},
+			Claims{
+				"iss": "joe",
+				// NOTE: test numbers must be floats for equality checks to work since values are converted form interface{} to float64 by default.
+				"exp": 1300819380.0,
+				"http://example.com/is_root": true,
+			},
+		},
+	}
+
+	for i, tt := range tests {
+		jwt, err := ParseJWT(tt.r)
+		if err != nil {
+			t.Errorf("raw token should parse. test: %d. expected: valid, actual: invalid. err=%v", i, err)
+		}
+
+		if !reflect.DeepEqual(tt.h, jwt.Header) {
+			t.Errorf("JOSE headers should match. test: %d. expected: %v, actual: %v", i, tt.h, jwt.Header)
+		}
+
+		claims, err := jwt.Claims()
+		if err != nil {
+			t.Errorf("test: %d. expected: valid claim parsing. err=%v", i, err)
+		}
+		if !reflect.DeepEqual(tt.c, claims) {
+			t.Errorf("claims should match. test: %d. expected: %v, actual: %v", i, tt.c, claims)
+		}
+
+		enc := jwt.Encode()
+		if enc != tt.r {
+			t.Errorf("encoded jwt should match raw jwt. test: %d. expected: %v, actual: %v", i, tt.r, enc)
+		}
+	}
+}
+
+func TestNewJWTHeaderType(t *testing.T) {
+	jwt, err := NewJWT(JOSEHeader{}, Claims{})
+	if err != nil {
+		t.Fatalf("Unexpected error: %v", err)
+	}
+
+	want := "JWT"
+	got := jwt.Header[HeaderMediaType]
+	if want != got {
+		t.Fatalf("Header %q incorrect: want=%s got=%s", HeaderMediaType, want, got)
+	}
+
+}
+
+func TestNewJWTHeaderKeyID(t *testing.T) {
+	jwt, err := NewJWT(JOSEHeader{HeaderKeyID: "foo"}, Claims{})
+	if err != nil {
+		t.Fatalf("Unexpected error: %v", err)
+	}
+
+	want := "foo"
+	got, ok := jwt.KeyID()
+	if !ok {
+		t.Fatalf("KeyID not set")
+	} else if want != got {
+		t.Fatalf("KeyID incorrect: want=%s got=%s", want, got)
+	}
+}
+
+func TestNewJWTHeaderKeyIDNotSet(t *testing.T) {
+	jwt, err := NewJWT(JOSEHeader{}, Claims{})
+	if err != nil {
+		t.Fatalf("Unexpected error: %v", err)
+	}
+
+	if _, ok := jwt.KeyID(); ok {
+		t.Fatalf("KeyID set, but should not be")
+	}
+}

vendor/github.com/coreos/go-oidc/jose/sig.go

@@ -0,0 +1,24 @@
+package jose
+
+import (
+	"fmt"
+)
+
+type Verifier interface {
+	ID() string
+	Alg() string
+	Verify(sig []byte, data []byte) error
+}
+
+type Signer interface {
+	Verifier
+	Sign(data []byte) (sig []byte, err error)
+}
+
+func NewVerifier(jwk JWK) (Verifier, error) {
+	if jwk.Type != "RSA" {
+		return nil, fmt.Errorf("unsupported key type %q", jwk.Type)
+	}
+
+	return NewVerifierRSA(jwk)
+}

vendor/github.com/coreos/go-oidc/jose/sig_rsa.go

@@ -0,0 +1,67 @@
+package jose
+
+import (
+	"crypto"
+	"crypto/rand"
+	"crypto/rsa"
+	"fmt"
+)
+
+type VerifierRSA struct {
+	KeyID     string
+	Hash      crypto.Hash
+	PublicKey rsa.PublicKey
+}
+
+type SignerRSA struct {
+	PrivateKey rsa.PrivateKey
+	VerifierRSA
+}
+
+func NewVerifierRSA(jwk JWK) (*VerifierRSA, error) {
+	if jwk.Alg != "" && jwk.Alg != "RS256" {
+		return nil, fmt.Errorf("unsupported key algorithm %q", jwk.Alg)
+	}
+
+	v := VerifierRSA{
+		KeyID: jwk.ID,
+		PublicKey: rsa.PublicKey{
+			N: jwk.Modulus,
+			E: jwk.Exponent,
+		},
+		Hash: crypto.SHA256,
+	}
+
+	return &v, nil
+}
+
+func NewSignerRSA(kid string, key rsa.PrivateKey) *SignerRSA {
+	return &SignerRSA{
+		PrivateKey: key,
+		VerifierRSA: VerifierRSA{
+			KeyID:     kid,
+			PublicKey: key.PublicKey,
+			Hash:      crypto.SHA256,
+		},
+	}
+}
+
+func (v *VerifierRSA) ID() string {
+	return v.KeyID
+}
+
+func (v *VerifierRSA) Alg() string {
+	return "RS256"
+}
+
+func (v *VerifierRSA) Verify(sig []byte, data []byte) error {
+	h := v.Hash.New()
+	h.Write(data)
+	return rsa.VerifyPKCS1v15(&v.PublicKey, v.Hash, h.Sum(nil), sig)
+}
+
+func (s *SignerRSA) Sign(data []byte) ([]byte, error) {
+	h := s.Hash.New()
+	h.Write(data)
+	return rsa.SignPKCS1v15(rand.Reader, &s.PrivateKey, s.Hash, h.Sum(nil))
+}

vendor/github.com/coreos/go-oidc/jose_test.go

@@ -0,0 +1,405 @@
+// +build !golint
+
+// This file contains statically created JWKs for tests created by gen.go
+
+package oidc
+
+import (
+	"encoding/json"
+
+	jose "gopkg.in/square/go-jose.v2"
+)
+
+func mustLoadJWK(s string) jose.JSONWebKey {
+	var jwk jose.JSONWebKey
+	if err := json.Unmarshal([]byte(s), &jwk); err != nil {
+		panic(err)
+	}
+	return jwk
+}
+
+var (
+	testKeyECDSA_256_0 = mustLoadJWK(`{
+		"kty": "EC",
+		"kid": "bd06f3e11f523e310f8c2c8b20a892727fb558e0e23602312568b20a41e11188",
+		"crv": "P-256",
+		"x": "xK5N69f0-SAgWbjw2otcQeCGs3qqYMyqOWk4Os5Z_Xc",
+		"y": "AXSaOPcMklJY9UKZhkGzVevqhAIUEzE3cfZ8o-ML5xE"
+	}`)
+	testKeyECDSA_256_0_Priv = mustLoadJWK(`{
+		"kty": "EC",
+		"kid": "bd06f3e11f523e310f8c2c8b20a892727fb558e0e23602312568b20a41e11188",
+		"crv": "P-256",
+		"x": "xK5N69f0-SAgWbjw2otcQeCGs3qqYMyqOWk4Os5Z_Xc",
+		"y": "AXSaOPcMklJY9UKZhkGzVevqhAIUEzE3cfZ8o-ML5xE",
+		"d": "L7jynYt-fMRPqw1e9vgXCGTg4yhGU4tlLxiFyNVimG4"
+	}`)
+
+	testKeyECDSA_256_1 = mustLoadJWK(`{
+		"kty": "EC",
+		"kid": "27ebd2f5bf6723e4de06caaab03703be458a37bf28a9fa748576a0826acb6ec2",
+		"crv": "P-256",
+		"x": "KZisP6wLCph4q6056jr7BH_asiX9RcLcS3HrNjdCpkw",
+		"y": "5DrW-kEge0sePHlKmh1d2kqd10r32JEW6eyyewy18j8"
+	}`)
+	testKeyECDSA_256_1_Priv = mustLoadJWK(`{
+		"kty": "EC",
+		"kid": "27ebd2f5bf6723e4de06caaab03703be458a37bf28a9fa748576a0826acb6ec2",
+		"crv": "P-256",
+		"x": "KZisP6wLCph4q6056jr7BH_asiX9RcLcS3HrNjdCpkw",
+		"y": "5DrW-kEge0sePHlKmh1d2kqd10r32JEW6eyyewy18j8",
+		"d": "r6CiIpv0icIq5U4LYO39nBDVhCHCLObDFYC5IG9Y8Hk"
+	}`)
+
+	testKeyECDSA_256_2 = mustLoadJWK(`{
+		"kty": "EC",
+		"kid": "2c7d179db6006c90ece4d91f554791ff35156693c693102c00f66f473d15df17",
+		"crv": "P-256",
+		"x": "oDwcKp7SqgeRvycK5GgYjrlW4fbHn2Ybfd5iG7kDiPc",
+		"y": "qazib9UwdUdbHSFzdy_HN10xZEItLvufPw0v7nIJOWA"
+	}`)
+	testKeyECDSA_256_2_Priv = mustLoadJWK(`{
+		"kty": "EC",
+		"kid": "2c7d179db6006c90ece4d91f554791ff35156693c693102c00f66f473d15df17",
+		"crv": "P-256",
+		"x": "oDwcKp7SqgeRvycK5GgYjrlW4fbHn2Ybfd5iG7kDiPc",
+		"y": "qazib9UwdUdbHSFzdy_HN10xZEItLvufPw0v7nIJOWA",
+		"d": "p79U6biKrOyrKzg-i3C7FVJiqzlqBhYQqmyOiZ9bhVM"
+	}`)
+
+	testKeyECDSA_256_3 = mustLoadJWK(`{
+		"kty": "EC",
+		"kid": "aba0a256999af470c8b2449103ae75b257d907da4d1cbfc73c1d45ab1098f544",
+		"crv": "P-256",
+		"x": "CKRYWVt1R7FzuJ43vEprfIzgB-KgIhRDhxLmd5ixiXY",
+		"y": "QCxTVmK31ee710OYkNqdqEgHH3rqRQNQj3Wyq0xtYq0"
+	}`)
+	testKeyECDSA_256_3_Priv = mustLoadJWK(`{
+		"kty": "EC",
+		"kid": "aba0a256999af470c8b2449103ae75b257d907da4d1cbfc73c1d45ab1098f544",
+		"crv": "P-256",
+		"x": "CKRYWVt1R7FzuJ43vEprfIzgB-KgIhRDhxLmd5ixiXY",
+		"y": "QCxTVmK31ee710OYkNqdqEgHH3rqRQNQj3Wyq0xtYq0",
+		"d": "c_WflwwUxT_B5izk4iET49qoob0RH5hccnEScfBS9Qk"
+	}`)
+
+	testKeyECDSA_384_0 = mustLoadJWK(`{
+		"kty": "EC",
+		"kid": "bc271d0a68251171e0c5edfd384b32d154e1717af27c5089bda8fb598a474b7b",
+		"crv": "P-384",
+		"x": "FZEhxw06oB86xCAZCtKTfX3ze9tgxkdN199g-cWrpQTWF-2m6Blg1MN5D60Z9KoX",
+		"y": "EyWjZ46gLlqfoU08iv0zcDWut1nbfoUoTd-7La2VY4PqQeDSFrxPCOyplxFMGJIW"
+	}`)
+	testKeyECDSA_384_0_Priv = mustLoadJWK(`{
+		"kty": "EC",
+		"kid": "bc271d0a68251171e0c5edfd384b32d154e1717af27c5089bda8fb598a474b7b",
+		"crv": "P-384",
+		"x": "FZEhxw06oB86xCAZCtKTfX3ze9tgxkdN199g-cWrpQTWF-2m6Blg1MN5D60Z9KoX",
+		"y": "EyWjZ46gLlqfoU08iv0zcDWut1nbfoUoTd-7La2VY4PqQeDSFrxPCOyplxFMGJIW",
+		"d": "t6oJHJBH2rvH3uyQkK_JwoUEwE1QHjwTnGLSDMZbNEDrEaR8BBiAo3s0p8rzGz5-"
+	}`)
+
+	testKeyECDSA_384_1 = mustLoadJWK(`{
+		"kty": "EC",
+		"kid": "58ef375d6e63cedc637fed59f4012a779cd749a83373237cf3972bba74ebd738",
+		"crv": "P-384",
+		"x": "Gj3zkiRR4RCJb0Tke3lD2spG2jzuXgX50fEwDZTRjlQIzz3Rc96Fw32FCSDectxQ",
+		"y": "6alqN7ilqJAmqCU1BFrJJeivJiM0s1-RqBewRoNkTQinOLLbaiZlBAQxS4iq2dRv"
+	}`)
+	testKeyECDSA_384_1_Priv = mustLoadJWK(`{
+		"kty": "EC",
+		"kid": "58ef375d6e63cedc637fed59f4012a779cd749a83373237cf3972bba74ebd738",
+		"crv": "P-384",
+		"x": "Gj3zkiRR4RCJb0Tke3lD2spG2jzuXgX50fEwDZTRjlQIzz3Rc96Fw32FCSDectxQ",
+		"y": "6alqN7ilqJAmqCU1BFrJJeivJiM0s1-RqBewRoNkTQinOLLbaiZlBAQxS4iq2dRv",
+		"d": "-4eaoElyb_YANRownMtId_-glX2o45oc4_L_vgo3YOW5hxCq3KIBIdrhvBx1nw8B"
+	}`)
+
+	testKeyECDSA_384_2 = mustLoadJWK(`{
+		"kty": "EC",
+		"kid": "a8bab6f438b6cd2080711404549c978d1c00dd77a3c532bba12c964c4883b2ec",
+		"crv": "P-384",
+		"x": "CBKwYgZFLdTBBFnWD20q2YNUnRnOsDgTxG3y-dzCUrb65kOKm0ZFaZQPe5ZPjvDS",
+		"y": "WlubxLv2qH-Aw-LsESKXAwm4HF3l4H1rVn3DZRpqcac6p-QSrXmfKCtxJVHDaTNi"
+	}`)
+	testKeyECDSA_384_2_Priv = mustLoadJWK(`{
+		"kty": "EC",
+		"kid": "a8bab6f438b6cd2080711404549c978d1c00dd77a3c532bba12c964c4883b2ec",
+		"crv": "P-384",
+		"x": "CBKwYgZFLdTBBFnWD20q2YNUnRnOsDgTxG3y-dzCUrb65kOKm0ZFaZQPe5ZPjvDS",
+		"y": "WlubxLv2qH-Aw-LsESKXAwm4HF3l4H1rVn3DZRpqcac6p-QSrXmfKCtxJVHDaTNi",
+		"d": "XfoOcxV3yfoAcRquJ9eaBvcY-H71B0XzXwx2eidolHDKLK7GHygEt9ToYSY_DvxO"
+	}`)
+
+	testKeyECDSA_384_3 = mustLoadJWK(`{
+		"kty": "EC",
+		"kid": "32f0cfc686455840530d727fb029002b9757ffff15272f98f53be9f77560718a",
+		"crv": "P-384",
+		"x": "xxED1z8EUCOUQ_jwS9nuVUDVzxs-U1rl19y8jMWrv4TdPeGHTRTgNUE57-YAL3ly",
+		"y": "OsCN6-HmM-LP1itE5eW15WsSQoe3dZBX7AoHyKJUKtjzWKCJNUcyu3Np07xta1Cr"
+	}`)
+	testKeyECDSA_384_3_Priv = mustLoadJWK(`{
+		"kty": "EC",
+		"kid": "32f0cfc686455840530d727fb029002b9757ffff15272f98f53be9f77560718a",
+		"crv": "P-384",
+		"x": "xxED1z8EUCOUQ_jwS9nuVUDVzxs-U1rl19y8jMWrv4TdPeGHTRTgNUE57-YAL3ly",
+		"y": "OsCN6-HmM-LP1itE5eW15WsSQoe3dZBX7AoHyKJUKtjzWKCJNUcyu3Np07xta1Cr",
+		"d": "gfQA6wn4brWVT3OkeGiaCXGsQyTybZB9SdqTULsiSg8n6FS2T8hvK0doPwMTT5Gw"
+	}`)
+
+	testKeyECDSA_521_0 = mustLoadJWK(`{
+		"kty": "EC",
+		"kid": "f7b325c848a6c9fc5b72f131f179d2f37296837262797983c632597a4927726e",
+		"crv": "P-521",
+		"x": "AUaLqCAMEWPqiYgd-D_6F5kxpOgqnbQnjIHZ-NhjRnKKYuij9Iz7bq9pZU4F79wsODFpWxMFfISrveUfgEGt4Hy2",
+		"y": "AeAKfmFsfcFttwQqv2B-fUfgLhw837YoGoNWh5qNE_LqTBxbYKRUkbSLxVRHEcVNnU1t3z9yMMdYXtuMlfJ0bhjr"
+	}`)
+	testKeyECDSA_521_0_Priv = mustLoadJWK(`{
+		"kty": "EC",
+		"kid": "f7b325c848a6c9fc5b72f131f179d2f37296837262797983c632597a4927726e",
+		"crv": "P-521",
+		"x": "AUaLqCAMEWPqiYgd-D_6F5kxpOgqnbQnjIHZ-NhjRnKKYuij9Iz7bq9pZU4F79wsODFpWxMFfISrveUfgEGt4Hy2",
+		"y": "AeAKfmFsfcFttwQqv2B-fUfgLhw837YoGoNWh5qNE_LqTBxbYKRUkbSLxVRHEcVNnU1t3z9yMMdYXtuMlfJ0bhjr",
+		"d": "AbD3guIvlVd8CZD0xUNuebgnQkE24XJnxCQ69P5VL3etEMmdr4HPJLPMQfMs10Gz8RTmrGKo-bdsU-cjS3d7dKIC"
+	}`)
+
+	testKeyECDSA_521_1 = mustLoadJWK(`{
+		"kty": "EC",
+		"kid": "4ea260ba2c9ed5fe9d6adeb998bb68b3edbab839d8bfd2be09fa628680793b90",
+		"crv": "P-521",
+		"x": "AE8-53o64GiywneanVZAHb96NcPbq0Ml6zynIcgLdKUiHGVs2te7SABq_9keFZJC6wooACeNWWT7VDK3kY77fjdh",
+		"y": "AAnrIu0-D7JEd3-mqTR8Rdz53kw7DLAIypv0-_u4rqn0glwTZCkMpQ17wFH71bMInXaTi2Z_uq67NuVxFvUCaTvS"
+	}`)
+	testKeyECDSA_521_1_Priv = mustLoadJWK(`{
+		"kty": "EC",
+		"kid": "4ea260ba2c9ed5fe9d6adeb998bb68b3edbab839d8bfd2be09fa628680793b90",
+		"crv": "P-521",
+		"x": "AE8-53o64GiywneanVZAHb96NcPbq0Ml6zynIcgLdKUiHGVs2te7SABq_9keFZJC6wooACeNWWT7VDK3kY77fjdh",
+		"y": "AAnrIu0-D7JEd3-mqTR8Rdz53kw7DLAIypv0-_u4rqn0glwTZCkMpQ17wFH71bMInXaTi2Z_uq67NuVxFvUCaTvS",
+		"d": "AVVL9TIWcJCYH5r3QUhHXtsbkVXhLQSpp4sL1ta_H2_3bpRb9ZdVv10YOA-xN7Yz2wa-FMhIhj1ULe9z18ZM8dDF"
+	}`)
+
+	testKeyECDSA_521_2 = mustLoadJWK(`{
+		"kty": "EC",
+		"kid": "d69caddc821807ea63a46519b538a7d2f3135dbdda1ba628781f8567a47893d8",
+		"crv": "P-521",
+		"x": "AO618rH8GP78-mi9Z5FaPGqpyc_OVMK-BajZK-pwL89ZQdOvFa0fY0ENpB_KaRf5ELw9IP17lQh3T-O9O7jePDFj",
+		"y": "AT1x9pCMbY-BXqAJPQDQxp6j8Gca7IpdxL8OS4td_XPiwXtX4JKcj_VKxtOw6k64yr_VuFYCs6wImOc72jNRBjA7"
+	}`)
+	testKeyECDSA_521_2_Priv = mustLoadJWK(`{
+		"kty": "EC",
+		"kid": "d69caddc821807ea63a46519b538a7d2f3135dbdda1ba628781f8567a47893d8",
+		"crv": "P-521",
+		"x": "AO618rH8GP78-mi9Z5FaPGqpyc_OVMK-BajZK-pwL89ZQdOvFa0fY0ENpB_KaRf5ELw9IP17lQh3T-O9O7jePDFj",
+		"y": "AT1x9pCMbY-BXqAJPQDQxp6j8Gca7IpdxL8OS4td_XPiwXtX4JKcj_VKxtOw6k64yr_VuFYCs6wImOc72jNRBjA7",
+		"d": "AYmtaW9ojb0Gb8zSqrlRnEKzRVIBIM5dsb1qWkd3mfr4Wl5tbPuiEctGLN9s6LDtY0JOL3nukOVoDbrmS4qCW64"
+	}`)
+
+	testKeyECDSA_521_3 = mustLoadJWK(`{
+		"kty": "EC",
+		"kid": "7193cba4fd9c72153133ce5cffc423857517ab8eb176a827e1a002eb5621edca",
+		"crv": "P-521",
+		"x": "AQfpLehZCER3ZTw1V1pN0RsX8-4WEW4IDxFDSGwrULQ79YHiLNmubrOSlSxiOSv2S-tHq-hxgma1PZlQRghJfemx",
+		"y": "AAF41XT7jptLsy8FAaVRnex2WcSfdebcjjXMGO4rn6IlD3u9qnvrpR8MBp1gz5G1C5S7_NVgIeLSIYbdfd_wjVkd"
+	}`)
+	testKeyECDSA_521_3_Priv = mustLoadJWK(`{
+		"kty": "EC",
+		"kid": "7193cba4fd9c72153133ce5cffc423857517ab8eb176a827e1a002eb5621edca",
+		"crv": "P-521",
+		"x": "AQfpLehZCER3ZTw1V1pN0RsX8-4WEW4IDxFDSGwrULQ79YHiLNmubrOSlSxiOSv2S-tHq-hxgma1PZlQRghJfemx",
+		"y": "AAF41XT7jptLsy8FAaVRnex2WcSfdebcjjXMGO4rn6IlD3u9qnvrpR8MBp1gz5G1C5S7_NVgIeLSIYbdfd_wjVkd",
+		"d": "hzh0loqrhYFUik86SYBv3CC_GKNYankLMK95-Cfr1gLBD1l0M6W-7gn3XlyaQEInz0TBIbaQ1fL78HHjbVsNLrY"
+	}`)
+
+	testKeyRSA_1024_0 = mustLoadJWK(`{
+		"kty": "RSA",
+		"kid": "979d62e7114052027b11bcb51282d8228790134ef34e746f6372fa5aadaa9bf2",
+		"n": "6zxmGE5X74SUBWfDEo8Tl-YxrkVfvxljQG9vKmNPQ2RhEmJ8eplZpKn9_nlxVDHGLzfJMqqUBS19EarIfDnOqyFBRkyKRbsQdUVU9XLjDIXqImJ8aN-UmShAYoeOClJVDsBJuxBGgS3pdgG7u3YQpvTV_hGuMoJr7UYgIrqb0qc",
+		"e": "AQAB"
+	}`)
+	testKeyRSA_1024_0_Priv = mustLoadJWK(`{
+		"kty": "RSA",
+		"kid": "979d62e7114052027b11bcb51282d8228790134ef34e746f6372fa5aadaa9bf2",
+		"n": "6zxmGE5X74SUBWfDEo8Tl-YxrkVfvxljQG9vKmNPQ2RhEmJ8eplZpKn9_nlxVDHGLzfJMqqUBS19EarIfDnOqyFBRkyKRbsQdUVU9XLjDIXqImJ8aN-UmShAYoeOClJVDsBJuxBGgS3pdgG7u3YQpvTV_hGuMoJr7UYgIrqb0qc",
+		"e": "AQAB",
+		"d": "IARggP5oyZjp7LJqwqPmrs4OBQI8Pe5eq-5-2u4ZY7rN24q8FpO4t8jLYU92NVdw-gxFvjepXesLEtSD5SSZFD7s-5rqmX9tW_t5t1a1sBY6IKz_YBSf2p2LtdTyrqgo4nRD0nYH3sMvGtOKCTV4K_vwfWPD3elXq752trG-HwE",
+		"p": "9tgo12L3earNNrJfyIIDD2dqgKuNfWhQzhbe-Ju17dF37uGF6xnLqR0WXU-agGpUdYTMOd7IQi_bX_xkjQBYlw",
+		"q": "8_YDvufPdccjGM2rAXs-2LbeP_LrzLUk1uGNpEjIt2lXEm6sQKjIfNLcAfVKh9zsqwqroveL2iI1ijsDgNAIcQ"
+	}`)
+
+	testKeyRSA_1024_1 = mustLoadJWK(`{
+		"kty": "RSA",
+		"kid": "4a3a37dc10aec5f427509e4014683102a0fafa32bec2ff9921ff19e1a55c79e8",
+		"n": "sn7sU7dBEkU1RBIz_LKgrswSS7-68vTlOe7n-lanAqAlczm01_6IWrvcIC7lPv1iHQqWngusskANZirCZGTv6kK8kJLHBVRSROB9VkPTPNFYnSB6dacyPa0ty0otsaYOVM2RFvcCX7lBKKat2Tmst8vITdpvnoEzTgT_eGOKGAs",
+		"e": "AQAB"
+	}`)
+	testKeyRSA_1024_1_Priv = mustLoadJWK(`{
+		"kty": "RSA",
+		"kid": "4a3a37dc10aec5f427509e4014683102a0fafa32bec2ff9921ff19e1a55c79e8",
+		"n": "sn7sU7dBEkU1RBIz_LKgrswSS7-68vTlOe7n-lanAqAlczm01_6IWrvcIC7lPv1iHQqWngusskANZirCZGTv6kK8kJLHBVRSROB9VkPTPNFYnSB6dacyPa0ty0otsaYOVM2RFvcCX7lBKKat2Tmst8vITdpvnoEzTgT_eGOKGAs",
+		"e": "AQAB",
+		"d": "KTXqpE1sBaba7HNzc0Vemdzd4IVMyWlHPz_saTz2ZEHLQ7YwDapjmudCpF-PaCKiM2hNbAHwBluJfGwk4372cPHcJyri3Gs4GGj-cOlbXJh9aUp5o8fqn904B1UcPxMZ2DrZAKjseuLj3zyJgCsSJOGU1kJFRAkM8UN4a9cE8sE",
+		"p": "3ntHMGDJEXwqldLNR-DucKGp32aJVAaKnn4j9qy1Tj6KhH70o3HyFVO_TKYxGg-pG3zTV-VzyMqmeh9hDdnyKw",
+		"q": "zWMxEjyxvp-P-mNxhWQe1pJXZi6iPpcnt0SZLfweT3AtAzEaoSs4-4D1jT911LD4xDI8_a7-gYHgD8ME62PhoQ"
+	}`)
+
+	testKeyRSA_1024_2 = mustLoadJWK(`{
+		"kty": "RSA",
+		"kid": "d1c32aaea6c9527038e589dd94a546ca1beedb90f90e073228986cc258cf1fda",
+		"n": "3mZrDaB5-7e29zok9XkGuu6FXYB00FqFgnGTJAGCMpql5uHz1h9p0DljZL4vsGkkYOZUMvqFS1pCEuzdSsupPNClf0NKMRux6yLv6iIR9C4pE9RBKPUrinzJuYs634rq5JOEP4IpP_fJfKxMw4Na85otd9KposKwP14cCkOibYM",
+		"e": "AQAB"
+	}`)
+	testKeyRSA_1024_2_Priv = mustLoadJWK(`{
+		"kty": "RSA",
+		"kid": "d1c32aaea6c9527038e589dd94a546ca1beedb90f90e073228986cc258cf1fda",
+		"n": "3mZrDaB5-7e29zok9XkGuu6FXYB00FqFgnGTJAGCMpql5uHz1h9p0DljZL4vsGkkYOZUMvqFS1pCEuzdSsupPNClf0NKMRux6yLv6iIR9C4pE9RBKPUrinzJuYs634rq5JOEP4IpP_fJfKxMw4Na85otd9KposKwP14cCkOibYM",
+		"e": "AQAB",
+		"d": "Ft2M0B_ZqsmepBh0SFCjIoD3cT-NwwYrh9fJewA0tKM1v2EnwrIEHQZpc6giGw8UUGod6gfbwH2NIYj8z33U7lyrKWPR7F8gJRm1KR5NLCBCnAnz0ukhsg24ktB25LZLZRCStRRhtCev95Vvmew0ip5081hv730Z2T_PsEyOU6E",
+		"p": "8moFzLKJSQuhaIYTo1qNX0w8o4NBFb1atOlthHmq6Y6rdYTm_nyM9Q3mrNBolPS7LHTiBXtCEJ_m4V5hWDuGKw",
+		"q": "6t0_mZKOoZ5NAE--MxkuOCcRhuqNo9VoacfPEH39CeoKAam4v5k56R7aQcb_raQK396pgV-evM2dpfdUaasiCQ"
+	}`)
+
+	testKeyRSA_1024_3 = mustLoadJWK(`{
+		"kty": "RSA",
+		"kid": "838742d0e3195b19f974fa30352db79070fa19aaaeb678ec95c499de7bd48d52",
+		"n": "17Uc89-QvCjqBLXDJSCWxUoohjwFPI63Gub8g-lH1GSK3flXqiohz33KfKhqrdKsLrpRjskGTMg3Vo0IcLBnMYdp1i1nceORghtYLQsDNS7tqlHiKx725fLmWldGgiuP_0Ak0Knisw-j_q7Jx3OVAJnuS1o3vPLfJxJdyq6yV1k",
+		"e": "AQAB"
+	}`)
+	testKeyRSA_1024_3_Priv = mustLoadJWK(`{
+		"kty": "RSA",
+		"kid": "838742d0e3195b19f974fa30352db79070fa19aaaeb678ec95c499de7bd48d52",
+		"n": "17Uc89-QvCjqBLXDJSCWxUoohjwFPI63Gub8g-lH1GSK3flXqiohz33KfKhqrdKsLrpRjskGTMg3Vo0IcLBnMYdp1i1nceORghtYLQsDNS7tqlHiKx725fLmWldGgiuP_0Ak0Knisw-j_q7Jx3OVAJnuS1o3vPLfJxJdyq6yV1k",
+		"e": "AQAB",
+		"d": "B8cM-zIVauNixLa1CZKqPQTWfziMy8ktivfHJQ51O5BAfY5u_cC1JWEYuvPrnMba1Hh9VlOjOYOCk0lUg5OotMx5hxym6M5y_2rIrW90a8r3gGttPlZmyHQnFIgj2QZHlEyZGU1SIPTOtoECW5RGk7cYpA1s1_zfz8uyG-MiCPE",
+		"p": "2dwia5iWWLZwFcCVylPh_7QDr3Wxt3kW_TmHIbaRT10Rborj1lAwltyEx7aVpHq-aNfvrYIEBbOXWwUU8PDUrQ",
+		"q": "_XiDT55hn-Txi2C_peMVSDgXozf01qHKvdLirXM2uT_CI8kruYZYjWYn6_cSUptJ60eioM3WNTxjrSxWRS923Q"
+	}`)
+
+	testKeyRSA_2048_0 = mustLoadJWK(`{
+		"kty": "RSA",
+		"kid": "13b668c7b4f5d46d53de65e4b9f9c522fad4870e4d1656e459c88de6e90984d6",
+		"n": "1j-CxBxkn20C_M24t6ueLp02T4MMAiPLXf5yaDcj7EcsXGbnsGEhrAUwCZwdEJAxeZ0PolmlE0XBOhQfRtsCVJmwu918aknptToyDbOUBr6WtPIK_c_BuGVanLCx3SnczV4jle9Bz7tGfpj2vAXytSBrfnZhdCHNEFeefQTQMnavfMhfWf_njiTa76BRyAHjb-XZIJHKovwBu0y3glmzhSKYNsUrW11RsWx6DbueWEbE3FpsHTiEdnJipcP3UKl3Z2z6t6n9ZYtFWkx4zCVVBQu-RWUQwjr2XnR1LFwXgL9xQocDBmS1O-wMTHqL3_oosNUdV3vuMPdxs_SEoys2rQ",
+		"e": "AQAB"
+	}`)
+	testKeyRSA_2048_0_Priv = mustLoadJWK(`{
+		"kty": "RSA",
+		"kid": "13b668c7b4f5d46d53de65e4b9f9c522fad4870e4d1656e459c88de6e90984d6",
+		"n": "1j-CxBxkn20C_M24t6ueLp02T4MMAiPLXf5yaDcj7EcsXGbnsGEhrAUwCZwdEJAxeZ0PolmlE0XBOhQfRtsCVJmwu918aknptToyDbOUBr6WtPIK_c_BuGVanLCx3SnczV4jle9Bz7tGfpj2vAXytSBrfnZhdCHNEFeefQTQMnavfMhfWf_njiTa76BRyAHjb-XZIJHKovwBu0y3glmzhSKYNsUrW11RsWx6DbueWEbE3FpsHTiEdnJipcP3UKl3Z2z6t6n9ZYtFWkx4zCVVBQu-RWUQwjr2XnR1LFwXgL9xQocDBmS1O-wMTHqL3_oosNUdV3vuMPdxs_SEoys2rQ",
+		"e": "AQAB",
+		"d": "C8F4X2Jfcw_8Nfrjw9A64bvmmv5JzmRAaGvpwyYjZneRS5Cp7demjVXLiPtz7NC8pjuj-_iHQkN1ksY_4RdrTVERjX1dskdT94m17WKJIMWcZ1lQmRSpQIDvM-HOIKCHaQ1dToDOT6Oq_o9OGosJAj9BJrNALasdIWRtYda9xcb7roLl_U3AtOlK9RiFygtt5uVBIPh1rsxaT0Y1MvMk4EMbFnv7NXXk65UM_3p2leSoPpO7LvlYs3WoRRX9ABH7zI-ppwLGEDuxfnwKzAOaRBe9oUh5rTYdazaY9XqofvekBc9Xqa2HpjkYX-L4Zy3oj04u-u5zX8KTh25jFC2a0Q",
+		"p": "6L6icXqV7jLSXHrhMyLpW-tdFFp2XRQ_uKk972jmUJ-sEeh1YYSx_JpK6oaUnYshGbRLfEAOLy03iweAL4uMZJcASOR44TwSnn_qJZ72PkwhD42uKhE0eJRpxVht6jf5qhsynaMNUWc_FIW5ESpQIf6j4rqFV5WrKHAt0ypChTc",
+		"q": "66fAza4rLvyjqQAIGQ07RiRYW4no1h4cK8RH_CDUgI3CCFQSuqTB8ZqM38r2u0tZoKzCNgHcnde6Jk07X6-LSQW2kypMXt3idbgaeVSYSbdZndgG_jTibJvoybxSjo6HfLpPvCrfsihXo7O5M13LE7VqBLbGTLI5iubOxcrfFTs"
+	}`)
+
+	testKeyRSA_2048_1 = mustLoadJWK(`{
+		"kty": "RSA",
+		"kid": "6d2b0efff0011bbbbf694de684b5b97cf454fd4086fa53b9af92545f3fa65459",
+		"n": "1CmSBUbxU1jjnmaBG0r0cLLmyZgCOMbfpG6Z3HwfVDgCK6P-rU3F6QQazrOgGJJ0sz6vP50VK5u7BR6vSrPBBX5CicJPM2iNdz2JuV9ODEIkDQBLeI6TfIGhNOls-14tXKOPExY8b6JdyDMP31Hwo_0pF1FaunZ7yY1bgoKCtDV5-RKGd2EgylDGNPu0Ilr92MqCsAntBC8eQSkO4CcTcti4t9cX45VY5nPtwQRmp5zIgUHnU4LV3QVTLJnU-uidaAxRVQbS1pVql5xR6nYZHYvFk1IU-wTY6gGk5WvGWWQ440UTTaMAfnJP6VFDggUXeGSlKfKkDcz7JLT2Ma2KXQ",
+		"e": "AQAB"
+	}`)
+	testKeyRSA_2048_1_Priv = mustLoadJWK(`{
+		"kty": "RSA",
+		"kid": "6d2b0efff0011bbbbf694de684b5b97cf454fd4086fa53b9af92545f3fa65459",
+		"n": "1CmSBUbxU1jjnmaBG0r0cLLmyZgCOMbfpG6Z3HwfVDgCK6P-rU3F6QQazrOgGJJ0sz6vP50VK5u7BR6vSrPBBX5CicJPM2iNdz2JuV9ODEIkDQBLeI6TfIGhNOls-14tXKOPExY8b6JdyDMP31Hwo_0pF1FaunZ7yY1bgoKCtDV5-RKGd2EgylDGNPu0Ilr92MqCsAntBC8eQSkO4CcTcti4t9cX45VY5nPtwQRmp5zIgUHnU4LV3QVTLJnU-uidaAxRVQbS1pVql5xR6nYZHYvFk1IU-wTY6gGk5WvGWWQ440UTTaMAfnJP6VFDggUXeGSlKfKkDcz7JLT2Ma2KXQ",
+		"e": "AQAB",
+		"d": "DYJcHuPmh-UYEUT7oY5DRE3P7jQ0qALZyLGWMHji0c0DLl4x4D0chfrR7il33zisH6G1LPrGl1FCNlA-3yXU-5GPkRADVQWqRFZxx5Du-k7X1tAW_iUt9PaYGjNm0hasEsMDYDbBQGZ5TD8cGp8wEHEVRbvTaB4VQb8zfXrr8ad8XCFdtYQF5Sw_VuvUBcn-50kdl7S0MmQiwLx5xkisJHkVdVsrWbq-JJPMYrjYzPGo07kt8pQH2ecxrQD2waTzkLiAg-nytPBkAyMIFQ-XCulWCNiI-V_HJ0pqNctgVpdaSihlPCYhfllxUSU8yg4UvcfFEAN2S5yjvPyrJeJLAQ",
+		"p": "4db4J-vxAyb_3otKidzYISIo8NuPxPXuYeImbvVbY6CWHdAYAkPgbwADh592D1vM6kwqZLot4VQ4XUVtX7Vf8tCaq5BAzcVAslK0rhK86kSmzuvtpS1ruzm1DGwJcQWOl_9qYnaAov8Ny0NG8fTm8iwvWJH7rVa3XNtPL0t_fx0",
+		"q": "8H7_sX4kY3_4t90HbA8IvVkTf3-OGaIjtcDn2J3HLq1wMKAtdxwsbMtjhLYP70PPBe_FBNpcWhE7p-tOVhH1i0N0wwFqwlRQy-3Z4oiLeSsy0Npl29cfP7teO5UTrbrqfmHB0j2u_nEqA4n4iDF5QhPr_9yzxSR4Pg56z4PgFEE"
+	}`)
+
+	testKeyRSA_2048_2 = mustLoadJWK(`{
+		"kty": "RSA",
+		"kid": "7988e9dea9647281b04d094e4dc5737eaf739a412a570aa4d6deed7ee5640c30",
+		"n": "wWOFgHHiJ54ZjQEKxvfqYDuhYymbfvYxvreroqx7E-cAuU4QBsOvKV3HNnH_vDRQE1AlqihNWmPFLptp7wxdMrLEtDnRFqTxyTXJ7wLCaaaB6Wwx1dhpr9QEG5-8rxLGFYv2w5i0-o76JPHG0tuqf0YNmHp9oWcv524XnDBuji4-u6km1KynT1EQKHYgy57JWgUpukgJGImBEvf0hC2Y5s5mHvVby3xAD9-cFa2o9Vj3G-SBYFsrRIVR8GcVNwo88oj8F7-2nGD_wOOu_qT_5I3vfToUYGj5-2rAK1ja0bZpXFibrkPrW4w9paG-3F7I0sPeL3e_BDC_rQ8TgL03uQ",
+		"e": "AQAB"
+	}`)
+	testKeyRSA_2048_2_Priv = mustLoadJWK(`{
+		"kty": "RSA",
+		"kid": "7988e9dea9647281b04d094e4dc5737eaf739a412a570aa4d6deed7ee5640c30",
+		"n": "wWOFgHHiJ54ZjQEKxvfqYDuhYymbfvYxvreroqx7E-cAuU4QBsOvKV3HNnH_vDRQE1AlqihNWmPFLptp7wxdMrLEtDnRFqTxyTXJ7wLCaaaB6Wwx1dhpr9QEG5-8rxLGFYv2w5i0-o76JPHG0tuqf0YNmHp9oWcv524XnDBuji4-u6km1KynT1EQKHYgy57JWgUpukgJGImBEvf0hC2Y5s5mHvVby3xAD9-cFa2o9Vj3G-SBYFsrRIVR8GcVNwo88oj8F7-2nGD_wOOu_qT_5I3vfToUYGj5-2rAK1ja0bZpXFibrkPrW4w9paG-3F7I0sPeL3e_BDC_rQ8TgL03uQ",
+		"e": "AQAB",
+		"d": "RPC4j-CJUbw_uY-Miv-oMuQvFU2o3Crh8u5BJn28ZozsKiMU_YRW9jUzJkqfczVm8muY8b7qTHXSvlmy-v_6XW9zRhhyXFMyypr9QNJIAifUmiTy4xwCGSdIy5w3RGY57UZ3EqVmpwe_TtpOGa8rabHMePX5wUcqwaLykcCGOPLOFKfPF93GqZYi2StS1IaiijLi2IAMhxQGqS6Ct3dA7yacQwegPiDzjb4Is3V9UQ9k_aS3I1w56tz5qspVmfDEuuWToc-2Qyk-eMKWl1tTDJuGTCiS5IFtMPerRpPq9GCpycV0csIW-6AnW79b038DxWjDAUsNnDPnX0y1dQ1G3Q",
+		"p": "yh2KH_JqU29L2SLG5-ul1EBbaSbt3F5UUZbCvm_MIsiH1TzafVyBd8FeG1d-pMR8bgGjaDSA-DNkOEDAeAlLx-UCTl2Uk2ySoMnZr5JjVLW2DTuF7e8ySKrKQSSLe63aQyKuIZh9P1RNrwrmFwvJgXdzudVjirmdTwxAN0lijE8",
+		"q": "9PJitAE_kk6SoKvJisXbDb7Xursj26xiYIdWuzlzQ1CbwYcJ1oORDpo0bEpy0BfIbZDiJJ79Xrh5Lo1BVysQ-IZJCXK7mavqiSa8g3B8rmqLXmAtjDbwLGsJOayCpYnsGgOLT7XIUYXCFH7C-tSSydhJ1j8JAbsJveMiBPKnUXc"
+	}`)
+
+	testKeyRSA_2048_3 = mustLoadJWK(`{
+		"kty": "RSA",
+		"kid": "d214aea9b78d15dd2667f5d19c36df6647fa50023140fd4f5866d285718b897c",
+		"n": "qFnqWpBOZ_5jnIr_XkXnonmHII5gKzxPhUBfvWBhGN2eH8nmnGh6aUnKyKuCLP_qfYLU7cf9bah-e00451iGite8Tg9ZMYAPFX4NM5j0rGWNv9Z6lSn1xXezJv-FU9VUwXm0DG5eVcB8OV99JWxHivQUSBzY0Q3DUlgrD7FhMd7BrrcmTUO07KnW6SxN3oTbT7fNMxfJSTRxmvU-t-6sLhYP4Wbg39zEUgI8M7b7tvHp34klSqOn2DibVBhvWGF1-IgNT7ng6pS5iAZN7Cz7NjPc9ZM_IWyngPKZV49Tf-ikX2O8uiCb4ccgRur6znwkE7MPrDTXSMHALn10sUcO_w",
+		"e": "AQAB"
+	}`)
+	testKeyRSA_2048_3_Priv = mustLoadJWK(`{
+		"kty": "RSA",
+		"kid": "d214aea9b78d15dd2667f5d19c36df6647fa50023140fd4f5866d285718b897c",
+		"n": "qFnqWpBOZ_5jnIr_XkXnonmHII5gKzxPhUBfvWBhGN2eH8nmnGh6aUnKyKuCLP_qfYLU7cf9bah-e00451iGite8Tg9ZMYAPFX4NM5j0rGWNv9Z6lSn1xXezJv-FU9VUwXm0DG5eVcB8OV99JWxHivQUSBzY0Q3DUlgrD7FhMd7BrrcmTUO07KnW6SxN3oTbT7fNMxfJSTRxmvU-t-6sLhYP4Wbg39zEUgI8M7b7tvHp34klSqOn2DibVBhvWGF1-IgNT7ng6pS5iAZN7Cz7NjPc9ZM_IWyngPKZV49Tf-ikX2O8uiCb4ccgRur6znwkE7MPrDTXSMHALn10sUcO_w",
+		"e": "AQAB",
+		"d": "cCIT2uarktD6gFaE6cIeGzZfLuwmWiX9wX-zRWxgwDM9E2dj12IvxtmD3E2Ak4CSK69tLEQ9JUFJnc89y7pHQ0uW_VdzzWjCo0omeOu0bO_njpPJanlcXn7wMVWY9NHvdj8eEfmhk_R1ybE0piyNKpyQtcehEv3bz4kyhW1ck936zafn5GWxCEWKIF-7OcotxtOl6z1GrJ7WqglMk8ooLucnAXzaPtcvD6seUhVH0vG60yI2AEInI_jMHR-mfDxrebG2xPPJLsqH3GChqTsxG5vjuaq71sNBiY_TbaUDbmWZxV66zdjhN93Rw-lc3vCPwG5vmuA2igWH7SKsHmQOAQ",
+		"p": "xvTQi8nCJGyZQm3fr7HU23FkSUYkKFUN1FRDWqjyz7kFj5rJxq5dSsNrrgVBvIBNY4TwDDcYia4rvx7KSRRwfV_rsU2-TCOxBebqVlbeV0HI7xMcVZXsv61Eugz-dznUU4wqmP_rCQ8vyNcVvCBbBLBW92n-IRQXsfuSUfuHnT8",
+		"q": "2J64YbgvH62PB4h-0iYuaykgUzWVSrXENg3_GaF8877AMTe98gjcH7HzTDW1fOhIcNZtmYTwlA2SgFudLsIJLoOn0-kmHzZjZJTWcsZsfTVwKhHD8Lzic7QkrrlbTIZlVu4mfT2f0kvaQiZp6zDCke3SLvVjlD-ebqTFCDIlXkE"
+	}`)
+
+	testKeyRSA_4096_0 = mustLoadJWK(`{
+		"kty": "RSA",
+		"kid": "4941c1e95df518587e54ddde3510c084fedf92098473537fb3fe022eaece9b42",
+		"n": "ypJYaH9_PLdEgGN3WFPL1V9qhC2BRXr24f1kGocaQe7wORFlZGX6gRpOCQ1lLmziLafERoSqZuBWF4vSGLeanCRQ7UKObYalMRR_rTJk6D_VD95LNOmtR4DrucdZvjQrAuLXhM5dNLGVoSq_zQowLDMeLWDUBB_TK4WlofoxI0RVoUOt4UXnSev8M_6yIYASpOAk8gG4FAqRfmU-3JhgkZOQCD0BhKYZVw_kEhRBrS3aik-1pQkan9hYIxWwc4KKtrLHNls7--vk5xDk2Vod5sZYRLlimbqHavN2IBeAeJGJqt1grXOVlnagKqmyq2MoPKufwptJBiVrVsTplyUB9FZe9FxUfxrkkxYJHufwP-3wXhaXpPFdL86TCUuOz-jTfng1rsTpwzmwm3RqFzz01yMc1RhaeWininQqj42bhW4bgFGVRP2QqSFbCbRZ4WMW3qWr3aR2QpJ7b8ac7JUhAJoh7-UtMmyGx9UJP0gjA8Wm-O81UENoDjMMdNUaVTfpSUKB7xZppg244jNZDIm1ptq4QyvvWkr0brp9Ymxpu0e3g2HyywyPjbeyNrIelb4E2tU5vCR4Fs_zGFG71AieruJGfzPTXE7ZaiLhP8n1652NCzIH76Y7OGz4ap2D55-RKpUkSI3KqWxUKxkM0tuZ7LS2F-1wEVs8P01K6RuQpxE",
+		"e": "AQAB"
+	}`)
+	testKeyRSA_4096_0_Priv = mustLoadJWK(`{
+		"kty": "RSA",
+		"kid": "4941c1e95df518587e54ddde3510c084fedf92098473537fb3fe022eaece9b42",
+		"n": "ypJYaH9_PLdEgGN3WFPL1V9qhC2BRXr24f1kGocaQe7wORFlZGX6gRpOCQ1lLmziLafERoSqZuBWF4vSGLeanCRQ7UKObYalMRR_rTJk6D_VD95LNOmtR4DrucdZvjQrAuLXhM5dNLGVoSq_zQowLDMeLWDUBB_TK4WlofoxI0RVoUOt4UXnSev8M_6yIYASpOAk8gG4FAqRfmU-3JhgkZOQCD0BhKYZVw_kEhRBrS3aik-1pQkan9hYIxWwc4KKtrLHNls7--vk5xDk2Vod5sZYRLlimbqHavN2IBeAeJGJqt1grXOVlnagKqmyq2MoPKufwptJBiVrVsTplyUB9FZe9FxUfxrkkxYJHufwP-3wXhaXpPFdL86TCUuOz-jTfng1rsTpwzmwm3RqFzz01yMc1RhaeWininQqj42bhW4bgFGVRP2QqSFbCbRZ4WMW3qWr3aR2QpJ7b8ac7JUhAJoh7-UtMmyGx9UJP0gjA8Wm-O81UENoDjMMdNUaVTfpSUKB7xZppg244jNZDIm1ptq4QyvvWkr0brp9Ymxpu0e3g2HyywyPjbeyNrIelb4E2tU5vCR4Fs_zGFG71AieruJGfzPTXE7ZaiLhP8n1652NCzIH76Y7OGz4ap2D55-RKpUkSI3KqWxUKxkM0tuZ7LS2F-1wEVs8P01K6RuQpxE",
+		"e": "AQAB",
+		"d": "VQagPRxm16FFC260hUqG4ASwvNIs1HEMd0bYYZobl1knU4zNthpnzxCveHU65wWk2ez1IXRF4fB_slpp0R4fszI7FZs-FRLS-4rTHGtul11TnNl9T7RVmxGt38ihDojvFMMKGyBTVu7DE2bSIsoH9kVugTWHSEPjav0pzJcrUNY56vpxXYDt18VJkrlxI0aSjMnYOAwoq6DT-O2eORFsVy5M4mhY3sipEjYFUOFXv8zjUfKrF55-omE4fWF5MsK0XoMjwtkAkHkvFx2sMN72dgsCubXmgQgeFvIhvs6eifzsf99z2NoPC5y3FbEs4Ws5VF3lLNXpDL9gEoeMVHigHKNoztIzbJnFLjzEag4wOBqbig4nWIlYEcLwd5-E0oQ8GHAhWtJn5AJQKOwTcasRWiUnRAulCcI8f9R2ATTSjAGU-juFUfhProp4w3ZlnUbO6U3tbh90KdFSJa-Bapts6ijPgEp6MHubVCHIxh1KGmod_CuGGjze1GuISEwI_4Yh0SrFlp4Wy6ecg7mKNnXvkBMd6h90LJaTzubnts33cCs-5UzCtYqmWHwXrMA6dRJuicY6su3NXxStuZn2bxU_Dn8LrS1vx_lhDU__NqMNbYj5ZvHkPvZiJNBI6Z1R5SY3pQzpH6vh9W2KRKF8cKOkushIaHNnHo7W5o4eZ9HjJFE",
+		"p": "7Bxd2wTrXfeSZAEGZEnfoJaMh6hKFG-fx0wLmF9U-Myq1fCIQ-gdl_Atqy0xQxYtQl2lOPUWfySegJSxpdRF8pwvLq9Yt7xFQDrV0B8d5-FjYJ_Mk2bbyHv_PhNmnfcYHqE_VdADeSaU-MRV1iknvjdbxSxYUF-U2C6llfJhn-ZbGPmZJyz8fTWHSh8aKLPJkuYV84wcNL04hpFPJq7Bhy7HAFhRYNpxXyDO3I36DCU94uvUCY758VKLl8IYMMSqjh-thluKJSkWibo85ZOJR38XFksMr70pH-DkT0WMv3PpLtNu6ac6Ry4CEkZexSWmbVk-pduRooo0On1CMsrsLw",
+		"q": "26K4gFJ0Ygqr4KaJ4QcRGN29XcjDpX5XTlHy3hCs_wEWc5wedydVgIH4tadiZcu0WinTtl0I6FYewWNpI8nFh8XJXsLOLepdKKR798zW8kEhzxdYdP1MTtGfy12KUCMeS2RQRsBJlmNdgrI0_m0JvW2LlGeK0EqvrqeS06L8bKGXkfY2aFGHl6ipSfUd5OpuSUqgfrj4-HgB8zywm-yAvn7UK-ySyQrP3K4PuOiY5QZmcPDxl8yqDAjorStrjPieYrlMqREHMsyq2FtAXhx4FzpKN7OljbE3EpgyFKkFN-wDTWRGxu3au0hQJx0-XthZ9i5r8zGcEbArQ5jZH7CQvw"
+	}`)
+
+	testKeyRSA_4096_1 = mustLoadJWK(`{
+		"kty": "RSA",
+		"kid": "d01929d205e83facdc5080a0a4ade80853978298a5c73780e863c035d32127c9",
+		"n": "ve_rSTi1vwfV2Oj7YNu1kv8Xz2ImAEqf7qo2RehTYW4FJpbj0wkMBVGmAulm4dz-1knnaPdpbrrIwkEYr1XR6kSIeB8aXkCZqDGZATxLSRqGEzu2J8Xt9z_qTQLWYD-NuMEf9H3B1CiP3Q2RnoWUlGvOr_KI5h6anzeqgZxlQLgqQujXscwqWpX7MVh3sheZ5SbyTkDcFWvQS_NEPaBGso-Au9X-yhZsHU1Ky02Nd_DPOrrRzl7uymE07hy3bIbxmrh4ZeEz6P2ixsHHYbd15GNMRlr1cWbg91RBB-akSxX0VYoLjjuqwo33UHk1hBbSATbobfpOKRruuZPZ_xOiPi-m0tUdD1Pj-h6xRcA5sZ1d55IdL8IY_9kgLc_WyU2RWFTXV6zA2SDDdE6EdEB_8q6U0oLU5T-YRxd-V2qOTqW1388qUaL5BalSvqM0g8kVfBYIM3uwLqQI_hCer4CL7_0DGlUtheye3qcoyqWVJd9iqfcWC-1S8NljAJwM9sehx6kOSM85UuUTH89VM35oAVp0rSPcLy20dPzEVQ0LAcy_iRHTkqy9nZ1z6mo-IWQE2ZyPCuESEfG7nFJ3YlUfwBJ5uZnk0N1FVYX5zgEKdkP322vShrv1blB_JtUedpbCcuS-qCaywpwjL0pzTDKpJMEqHds0-DFT7AbULcujw_U",
+		"e": "AQAB"
+	}`)
+	testKeyRSA_4096_1_Priv = mustLoadJWK(`{
+		"kty": "RSA",
+		"kid": "d01929d205e83facdc5080a0a4ade80853978298a5c73780e863c035d32127c9",
+		"n": "ve_rSTi1vwfV2Oj7YNu1kv8Xz2ImAEqf7qo2RehTYW4FJpbj0wkMBVGmAulm4dz-1knnaPdpbrrIwkEYr1XR6kSIeB8aXkCZqDGZATxLSRqGEzu2J8Xt9z_qTQLWYD-NuMEf9H3B1CiP3Q2RnoWUlGvOr_KI5h6anzeqgZxlQLgqQujXscwqWpX7MVh3sheZ5SbyTkDcFWvQS_NEPaBGso-Au9X-yhZsHU1Ky02Nd_DPOrrRzl7uymE07hy3bIbxmrh4ZeEz6P2ixsHHYbd15GNMRlr1cWbg91RBB-akSxX0VYoLjjuqwo33UHk1hBbSATbobfpOKRruuZPZ_xOiPi-m0tUdD1Pj-h6xRcA5sZ1d55IdL8IY_9kgLc_WyU2RWFTXV6zA2SDDdE6EdEB_8q6U0oLU5T-YRxd-V2qOTqW1388qUaL5BalSvqM0g8kVfBYIM3uwLqQI_hCer4CL7_0DGlUtheye3qcoyqWVJd9iqfcWC-1S8NljAJwM9sehx6kOSM85UuUTH89VM35oAVp0rSPcLy20dPzEVQ0LAcy_iRHTkqy9nZ1z6mo-IWQE2ZyPCuESEfG7nFJ3YlUfwBJ5uZnk0N1FVYX5zgEKdkP322vShrv1blB_JtUedpbCcuS-qCaywpwjL0pzTDKpJMEqHds0-DFT7AbULcujw_U",
+		"e": "AQAB",
+		"d": "mCjZ3wDVaMJIKMsMhx28KpS9aGACfX1K_pHRhNOH6KeQ7Mc4oFnBDYnJas-8ofi_FsCB6G88QX7VUfmAYwZncjuQ8FpKb3NlJX8GSh0ZWukqu8G8PcSszMShWSyKvPRs_rOIe_87BlGwXrB-FfaBfx2WqRGtZlziFecsa0T1QJHJGW0bTs52p7c7Ut7ClSOfIBrBRrtjFK4YYp_x7US3HlkkElZvFUo9NoQzBQeN66Y4_Z2ocqFOv0Z8drz-nKzGZOKfYU62nVKD0qJurfOhOGPsOPipZD28v6b5qfC1cYmXAefjNgDK3a2JkShpHPaDKoHoViKN9xQiZvzxSQ1bjQCgB6xQWk61YwmiB44gFLshXvXkx_wcccO2XC4m-Pk0r-Uj9Ugvgizk8HYp1H9eqnp8A6sqU44mrmdt14vM68SGzEqYpLoUkcxPttHvNoORAzgQfuK3SOIFyuwFqKTMBupR4A42XvxLj_PuKEKFekS2JEK8fON2t_LuUDVemjMxwXD0gjljHSKD9HnguihI5IEd6Kgr-HlTwiiDQfzcmWQdoFUs_Je4tVCSbGRrJYju01gLouDu7gzN14pZcEyoBLPkj-_MDiiymvlBLOBU2s5nQRZCaC_0IKgHLaT_rzQaXwmVhU-OURdwdoViMVc_cdXtle4TqU1g41nNE_0tiwE",
+		"p": "2h_9HZCOpf3S9qpAkNS2ncMsRjBlWCpRltoCs-XBF_IgOJlCkJ-42k_V1zaf6YrgMy00XD4Ij5MMiUOharvc3w_WKJF-AwGu9JEpi38Wzj1nkY86sdB1ZPu4ihSRZm81jIjuLZ2siILqkupXaY0S_0CeNLKPoVpvfPWCb3psCWuLVRDhYECPCx9FYg2tzisbFpVAPPqNCFswMYNvhyJ2NQ0hzueKDc1uHBUanCSG6gIbeY1bQvYYFGySYkWZcQg98RSeDbLysHalCSQCgPjss3likTT9OjWLv23vpXURFhgywv6Phx4He0yWB8ZRrnskfW0S76kZ325SPUlnOhf31Q",
+		"q": "3urwELOa7TDpwLMeMEOf2aspz1gkMjoN-V4SMzRGxIoPy93-bQ62Z8nPduma1gK0zHOIs0gU8dDqjy8P8Z7vudJqRFJIrzjD-RnDqQDz7KM_6x0kbEN4GLQiNGVAckRhoEmYjDXXkG3teD2ST5NqlYwxGvFmCvw5RCJZG7eNjXY3KnJQrDyx61NIFEvSm3sBlJkOVhSanuqHBL6T-efaBkUcQ7mY7_iYtCt7cjMG8qQtF0KovVsMF6BUc9KDobpUvDsvPrSTAzsYJvVNkzGJtF8Strr-61VA6qZnRcDW3ukYvmJp_SdAcv3KzSkWwEmJEaAtaiOh2jWkRG9QpV_LoQ"
+	}`)
+
+	testKeyRSA_4096_2 = mustLoadJWK(`{
+		"kty": "RSA",
+		"kid": "822512e8098b9fa56c9152a56d2607bda912c89f6f4fe1b6ccf41627bf06de29",
+		"n": "3bcg0diA0TPvK283P02o5UT8cBf5q48uUsfuCkIbLqNFtskGuoft8OJLmik7c7pLNSK3Jad_-xRlfsrcV1fDBs8EJDFnoY-4r_xk_-GQl-OsHzuz7HMvjVYUSYeVZMtzPAfCIFJxSIaiIW9MEwCwYyrtRefedfKUV7Ax6hjOUXtyRZ5DRHj2FnNl6MjE8mTSJ8OQI9ETErg0wF448fJb6hYCidVHfeBSCOceljXMg8a9iDYHVnzsUb9ETl7xlRZDvUpIoG0jU-aC3oZdM0YgXspvw4FcXg1-ad-TbgRjEm_iJ-4KUhAYso6-Y6eimDT_TMhbKBLGE86pUjRPIXVNl6odjkXmcmh7bz9v0-gIfHB9zVbrqE8i8iIwkux-Uhq_VMiIFikjtjmDo5W-7qA_cjvq1dA1QqOJ54ijbdvglUtneuA5CnwfGHAvf94lEPebgP5eCMZjz_Dtl0FTX0u5lOVBs4qeyEfV1XANOq_h1gHmwJDlspGZVuPfSk4-YMCeBy5Ua_gNDqOIQo3EQbmjyN5yD9byFh3WDSQJN1kKT3BZSou-Q8-KT2lu9KT_CpTfVMaNXnPpXJ_H0S9Q7sbUzA6dF1h0Q_mu_bOlWTRlH3vXfZ3_3Vikjk-jhQdaRv8yjTdhX33wAVHk7omKlo76G3QJdnvjysJ6aagFPZ3qhmc",
+		"e": "AQAB"
+	}`)
+	testKeyRSA_4096_2_Priv = mustLoadJWK(`{
+		"kty": "RSA",
+		"kid": "822512e8098b9fa56c9152a56d2607bda912c89f6f4fe1b6ccf41627bf06de29",
+		"n": "3bcg0diA0TPvK283P02o5UT8cBf5q48uUsfuCkIbLqNFtskGuoft8OJLmik7c7pLNSK3Jad_-xRlfsrcV1fDBs8EJDFnoY-4r_xk_-GQl-OsHzuz7HMvjVYUSYeVZMtzPAfCIFJxSIaiIW9MEwCwYyrtRefedfKUV7Ax6hjOUXtyRZ5DRHj2FnNl6MjE8mTSJ8OQI9ETErg0wF448fJb6hYCidVHfeBSCOceljXMg8a9iDYHVnzsUb9ETl7xlRZDvUpIoG0jU-aC3oZdM0YgXspvw4FcXg1-ad-TbgRjEm_iJ-4KUhAYso6-Y6eimDT_TMhbKBLGE86pUjRPIXVNl6odjkXmcmh7bz9v0-gIfHB9zVbrqE8i8iIwkux-Uhq_VMiIFikjtjmDo5W-7qA_cjvq1dA1QqOJ54ijbdvglUtneuA5CnwfGHAvf94lEPebgP5eCMZjz_Dtl0FTX0u5lOVBs4qeyEfV1XANOq_h1gHmwJDlspGZVuPfSk4-YMCeBy5Ua_gNDqOIQo3EQbmjyN5yD9byFh3WDSQJN1kKT3BZSou-Q8-KT2lu9KT_CpTfVMaNXnPpXJ_H0S9Q7sbUzA6dF1h0Q_mu_bOlWTRlH3vXfZ3_3Vikjk-jhQdaRv8yjTdhX33wAVHk7omKlo76G3QJdnvjysJ6aagFPZ3qhmc",
+		"e": "AQAB",
+		"d": "wcO4mAxJUAu-OsxgkR9SusPWhjQ9y5Q_XLNDso1hahng5ES9b6k55mouvlTIk3Q9I_vp6auAKrMBnJS3ilG1rK6hJOxUcBrFwm-m6QV9s3CSzV0E-mEULsYKxtQKWOOBGvaAznSeck7PRL8a0gSpIpGyeYSRo6zTverLRJZXQVjMXlFY4m-ASdCiQJWtoVVBYOUFhHfE3nhECdaOl8xCTcrcfw75AuZXa1ZpIcd0q7m1jGQDd6-HbE3m6UMKiEvD-ZsA68tVs45h0w3ER_pCcfUjRc45Ji1OzEJLezu0RbmoAVOEi4FrxCkB9N_dNn4inD0BhX0axNa4nZH_kfMNUh06081FaBiBq5bNBPQF7lWIYxAhtd2VgsUTZtNxMfHDTllt5fvbCogYngU5-Wj3UM33R_es_aakt_CFndJPmyenP0J7KEBmf4qnlrbxun-jQNV_cbEzgQA_Pt5RIhB5jgofYzT72Ib-lViZUolXpxg8mFQ5BPghqriuaX8eSc85y5rbu-nEvheDkIC7xjTtDBShXMvKKokx6t4d-x_W4sWDuLKsVNn3Veg6mbbl3O74Fr-joEM9unMg-9KCapAuBKmMv4GejOVOIj43i0lm8dsuMslNKsThWpjApE50-VBuySi1f0jD2HNEzjMTt5ZrlNi9bRFzAht46kdc_g4TWLE",
+		"p": "7cl5QebQldiOrfe2Z7E2aP4d1GIuX4b3u-kXUDa73HI4S2u9TooJF8lfsbrtzJIG60iIzio9Pej8R4ss2_1TPC_F7gQS67ST5yY2zuwUH6jwpt8KtVO3NKd9SNfVJse_mZLp7eAeH8CMq4bqkDig8ZI_Sp1LQtWXvhvhju40i0h1ef-MD36wbc26BE1L6tQMAoJIU-pMDawmWMGG3Q5_LxKHb1cxvV8gVfFgsJbAHMPXxcmpCdp1FqeqpvRs3bch3AMxHwjy1SFRK6lhvliS2ZvD7fdupA09PGJ-cNO3S9iHdCvsnyOHg9pMbxxcYW8Io_t1ihk6JYFvZlDIYvukXw",
+		"q": "7rKFf6190MlunvlLSdMvN_E2Xuow35_EThaxQ9e_7FS32LKPy847vFreXzVivVW1IVXrRSDgU8VIEyBQzftliLSriefKYdx2jtd_A84baha4p6CAK9SwfZcVEcIuU2Ul8XcUpbg53_bxUWDv4mYewZW_AqaZ0ZR1Ug14gCGHELvjs7MmWkCkJB6lEenRQZvzwcmA8tWzZ6Dlqb_RyLtxcVPbeSuc3t6YxbB1-pquwXoQLB9-XvgR_4L6vuGZrp1D-C0lzboUPoftkC_hKYb_xY6LPJTsL8LUypATcTrAnD0TBrqj5-Oy_4dMin6OcsXrfdxflxaJqkh7B-kz20oa-Q"
+	}`)
+
+	testKeyRSA_4096_3 = mustLoadJWK(`{
+		"kty": "RSA",
+		"kid": "ad60df152305985e6bdd8cb1d1f496f766aed097b7464b8b821a09b27f054dcb",
+		"n": "q8mHub9-A7LH2ykklO52CRQ9KYeM9FlHaoLJCMokmwdb8FF8cAMOPDQ4lx7rB107vwX5oHS6T4uhOUH6ppgZnvB083-f5cBfvZPSwvKg1csOPI3Llp-hIO3vnu7v4M-dXRJevmNdTAoHINXP8mJ1KfGL6BuxckxLEOoIX0suSmyudAE_lc6ioMAfwehkH7qTWwllIuReGwxHHYapM0AFIYysJ0z96l-WNkO3ssLm6Q7txpumM_b0d58OkdezBLujEfn0t5H8hsml_LUSE4TfWcGwm3oDBB2q5tsI2_QmVwdV6BcP43Sm8R7EbJvTQq3YXKLlC-Et4-3CDGaMV6z1eFmHBs_FMGzto-kg9MUFockOe0vkfjHj6AafNw7AFyBJRvV3EdMM-O1ysiC5cs45aowbfQIz_9H9RVbR9iMiEjq6nM34bhgfu-FvOmAcliCOJnDlBy2wWe2XyXTLQVkmn1C_w2mitcQAkP-LiktypUwSIbyDqfBai1_imO1SIVzomRLvzSju5qGrcm0ROV6o9zKXCVc546g9la9FUTTPZsI0_s3hcVRVMaF3fa122hE848serjCqNJ0Nb3CYOlVCc6JrkUdeuCj0Y-on6V6aeCFAQxFb1z_p88STsNJkrcNZp87f1JUaSB4POF01dLNQ2HTe7xJCMRmK-fpNuDCOzNM",
+		"e": "AQAB"
+	}`)
+	testKeyRSA_4096_3_Priv = mustLoadJWK(`{
+		"kty": "RSA",
+		"kid": "ad60df152305985e6bdd8cb1d1f496f766aed097b7464b8b821a09b27f054dcb",
+		"n": "q8mHub9-A7LH2ykklO52CRQ9KYeM9FlHaoLJCMokmwdb8FF8cAMOPDQ4lx7rB107vwX5oHS6T4uhOUH6ppgZnvB083-f5cBfvZPSwvKg1csOPI3Llp-hIO3vnu7v4M-dXRJevmNdTAoHINXP8mJ1KfGL6BuxckxLEOoIX0suSmyudAE_lc6ioMAfwehkH7qTWwllIuReGwxHHYapM0AFIYysJ0z96l-WNkO3ssLm6Q7txpumM_b0d58OkdezBLujEfn0t5H8hsml_LUSE4TfWcGwm3oDBB2q5tsI2_QmVwdV6BcP43Sm8R7EbJvTQq3YXKLlC-Et4-3CDGaMV6z1eFmHBs_FMGzto-kg9MUFockOe0vkfjHj6AafNw7AFyBJRvV3EdMM-O1ysiC5cs45aowbfQIz_9H9RVbR9iMiEjq6nM34bhgfu-FvOmAcliCOJnDlBy2wWe2XyXTLQVkmn1C_w2mitcQAkP-LiktypUwSIbyDqfBai1_imO1SIVzomRLvzSju5qGrcm0ROV6o9zKXCVc546g9la9FUTTPZsI0_s3hcVRVMaF3fa122hE848serjCqNJ0Nb3CYOlVCc6JrkUdeuCj0Y-on6V6aeCFAQxFb1z_p88STsNJkrcNZp87f1JUaSB4POF01dLNQ2HTe7xJCMRmK-fpNuDCOzNM",
+		"e": "AQAB",
+		"d": "QFcw8I8aQYRaemlEfEt8BhaAeed9EZ_GscveQ96CK1ZsRuweMU3TrRTaBS_dU1rGH9u7DS_rABQKBIoDuRXKss7Y3sJ0Pvb4ZObSz5VUS_7LjD6HfBi5nr2_O8W-LnNUOyHAPoq0zOAMn221ftEFlPoVLpAAvBB7JRCiph5gbhuak3RMPm2wV4jd3CCQL5oPys8QBCuIW5UTpalkAf_-a_xmFiouB_RZLGXcjaWWGsAuqm5tp5TdJ1h5eoJRWHp2ryrxTzfsXwdzldyzsn_Xr6Rt4y2lp4r9EY4EGW2uVnY25MCOgOCWDkU5yHvselLmcHvKUdK6_11zinV2Jvhuz1FaW10P6lRXxhjuuT4bT7XmY6WkJCUvWf8w_NYrGwDbRvQa6YZcZZWKZ1l2Enkgd_P4qwtrnROQSCe0dJdNG3lSq90lrAwuvb8AhKhpQ8nJSaSQc_h2pa4NJZ-R__9m0_7CRUuEEg9k47AtgdIe09KLSpcACc3W5cBXEw2pL8ihqcf9AVgM0TFQQVrUdIst3YjUiB6r2zLVCRx8KjtT8Pmz6YtMQwDIFTrUopwwai5PEP3QEdxdNF39W1iwkqjA8uw4IlXgZAr4-9s3x617XUL0BQ4TgMpTsEghpV1U8U2HQfYGUKBcAlSqIlAi0MU4QRwcsAJrcoTIi-e34NFMbHE",
+		"p": "xvZ1BKzaRfrmQT2mmbK1MzKdr4amHrx4EJ_4fRsCRBj8MqB92y4Bp0iuO8rZ3iK_yOOgQQTcr4UP5UEACLOqGDPNa92UUpHu1U5XR3MiIY0kGcdovpkkGU8fq78VRpyofc1b9kvZsy4eL0e7W7jApjGu479D_evnpT7lqSOGRl1Z0QHdI3ctKmKw48-AmQWL4BibXTyaXOfRgTHm4AtbrvFshwCZ43QgzrCrwbhZlOfiIIW9wXa_OqqOhV11BLF72qTglecfTgUOxY0W5GWgbwXCVZ8Lwr6cxYKGrKjmny9UNOIjABGsJjZm5egwDNUhhoaEeXXyzXbCKynvUCDxZw",
+		"q": "3Qi1bRzj3TYW3Iw9KSDCuuHWBJRO_3Ke-JLB7PHEXc1hsPwF_XDqXPaBbIUtgKaqNzUehYAQbtHHhJVGqZadTKjsNkO4sO_r5nRoxUpFuGgUEmKNN0QeJa_llHzAZ9JpvUrtoyzVZX-2Em_3aAhtV5pZ6t22YToPDjZIBgqL96MQRCyKsv2FS_dbpoYKdXlG6phzkzKPn3oaWkh-VwmgAsFg7uXdiquQEsXYcOq3-77Umiuke6SBbaHLryLflTzOV7YvY7Kw3s3NycS9MDBESKYXqqX3YKvS25ZFFjYbrVOx5AluLiwajZu2biIPZb9rNbSXE77Hll3tAbmA5syJtQ"
+	}`)
+)

vendor/github.com/coreos/go-oidc/jwks.go

@@ -0,0 +1,199 @@
+package oidc
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"sync"
+	"time"
+
+	"github.com/pquerna/cachecontrol"
+	jose "gopkg.in/square/go-jose.v2"
+)
+
+// keysExpiryDelta is the allowed clock skew between a client and the OpenID Connect
+// server.
+//
+// When keys expire, they are valid for this amount of time after.
+//
+// If the keys have not expired, and an ID Token claims it was signed by a key not in
+// the cache, if and only if the keys expire in this amount of time, the keys will be
+// updated.
+const keysExpiryDelta = 30 * time.Second
+
+func newRemoteKeySet(ctx context.Context, jwksURL string, now func() time.Time) *remoteKeySet {
+	if now == nil {
+		now = time.Now
+	}
+	return &remoteKeySet{jwksURL: jwksURL, ctx: ctx, now: now}
+}
+
+type remoteKeySet struct {
+	jwksURL string
+	ctx     context.Context
+	now     func() time.Time
+
+	// guard all other fields
+	mu sync.Mutex
+
+	// inflightCtx suppresses parallel execution of updateKeys and allows
+	// multiple goroutines to wait for its result.
+	// Its Err() method returns any errors encountered during updateKeys.
+	//
+	// If nil, there is no inflight updateKeys request.
+	inflightCtx *inflight
+
+	// A set of cached keys and their expiry.
+	cachedKeys []jose.JSONWebKey
+	expiry     time.Time
+}
+
+// inflight is used to wait on some in-flight request from multiple goroutines
+type inflight struct {
+	done chan struct{}
+	err  error
+}
+
+// Done returns a channel that is closed when the inflight request finishes.
+func (i *inflight) Done() <-chan struct{} {
+	return i.done
+}
+
+// Err returns any error encountered during request execution. May be nil.
+func (i *inflight) Err() error {
+	return i.err
+}
+
+// Cancel signals completion of the inflight request with error err.
+// Must be called only once for particular inflight instance.
+func (i *inflight) Cancel(err error) {
+	i.err = err
+	close(i.done)
+}
+
+func (r *remoteKeySet) keysWithIDFromCache(keyIDs []string) ([]jose.JSONWebKey, bool) {
+	r.mu.Lock()
+	keys, expiry := r.cachedKeys, r.expiry
+	r.mu.Unlock()
+
+	// Have the keys expired?
+	if expiry.Add(keysExpiryDelta).Before(r.now()) {
+		return nil, false
+	}
+
+	var signingKeys []jose.JSONWebKey
+	for _, key := range keys {
+		if contains(keyIDs, key.KeyID) {
+			signingKeys = append(signingKeys, key)
+		}
+	}
+
+	if len(signingKeys) == 0 {
+		// Are the keys about to expire?
+		if r.now().Add(keysExpiryDelta).After(expiry) {
+			return nil, false
+		}
+	}
+
+	return signingKeys, true
+}
+func (r *remoteKeySet) keysWithID(ctx context.Context, keyIDs []string) ([]jose.JSONWebKey, error) {
+	keys, ok := r.keysWithIDFromCache(keyIDs)
+	if ok {
+		return keys, nil
+	}
+
+	var inflightCtx *inflight
+	func() {
+		r.mu.Lock()
+		defer r.mu.Unlock()
+
+		// If there's not a current inflight request, create one.
+		if r.inflightCtx == nil {
+			inflightCtx := &inflight{make(chan struct{}), nil}
+			r.inflightCtx = inflightCtx
+
+			go func() {
+				// TODO(ericchiang): Upstream Kubernetes request that we recover every time
+				// we spawn a goroutine, because panics in a goroutine will bring down the
+				// entire program. There's no way to recover from another goroutine's panic.
+				//
+				// Most users actually want to let the panic propagate and bring down the
+				// program because it implies some unrecoverable state.
+				//
+				// Add a context key to allow the recover behavior.
+				//
+				// See: https://github.com/coreos/go-oidc/issues/89
+
+				// Sync keys and close inflightCtx when that's done.
+				// Use the remoteKeySet's context instead of the requests context
+				// because a re-sync is unique to the keys set and will span multiple
+				// requests.
+				inflightCtx.Cancel(r.updateKeys(r.ctx))
+
+				r.mu.Lock()
+				defer r.mu.Unlock()
+				r.inflightCtx = nil
+			}()
+		}
+
+		inflightCtx = r.inflightCtx
+	}()
+
+	select {
+	case <-ctx.Done():
+		return nil, ctx.Err()
+	case <-inflightCtx.Done():
+		if err := inflightCtx.Err(); err != nil {
+			return nil, err
+		}
+	}
+
+	// Since we've just updated keys, we don't care about the cache miss.
+	keys, _ = r.keysWithIDFromCache(keyIDs)
+	return keys, nil
+}
+
+func (r *remoteKeySet) updateKeys(ctx context.Context) error {
+	req, err := http.NewRequest("GET", r.jwksURL, nil)
+	if err != nil {
+		return fmt.Errorf("oidc: can't create request: %v", err)
+	}
+
+	resp, err := doRequest(ctx, req)
+	if err != nil {
+		return fmt.Errorf("oidc: get keys failed %v", err)
+	}
+	defer resp.Body.Close()
+
+	body, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return fmt.Errorf("oidc: read response body: %v", err)
+	}
+	if resp.StatusCode != http.StatusOK {
+		return fmt.Errorf("oidc: get keys failed: %s %s", resp.Status, body)
+	}
+
+	var keySet jose.JSONWebKeySet
+	if err := json.Unmarshal(body, &keySet); err != nil {
+		return fmt.Errorf("oidc: failed to decode keys: %v %s", err, body)
+	}
+
+	// If the server doesn't provide cache control headers, assume the
+	// keys expire immediately.
+	expiry := r.now()
+
+	_, e, err := cachecontrol.CachableResponse(req, resp, cachecontrol.Options{})
+	if err == nil && e.After(expiry) {
+		expiry = e
+	}
+
+	r.mu.Lock()
+	defer r.mu.Unlock()
+	r.cachedKeys = keySet.Keys
+	r.expiry = expiry
+
+	return nil
+}

vendor/github.com/coreos/go-oidc/jwks_test.go

@@ -0,0 +1,99 @@
+package oidc
+
+import (
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"reflect"
+	"testing"
+	"time"
+
+	"golang.org/x/net/context"
+	jose "gopkg.in/square/go-jose.v2"
+)
+
+type keyServer struct {
+	keys jose.JSONWebKeySet
+}
+
+func newKeyServer(keys ...jose.JSONWebKey) keyServer {
+	return keyServer{
+		keys: jose.JSONWebKeySet{Keys: keys},
+	}
+}
+
+func (k keyServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	if err := json.NewEncoder(w).Encode(k.keys); err != nil {
+		panic(err)
+	}
+}
+
+func TestKeysFormID(t *testing.T) {
+	tests := []struct {
+		name     string
+		keys     []jose.JSONWebKey
+		keyIDs   []string
+		wantKeys []jose.JSONWebKey
+	}{
+		{
+			name: "single key",
+			keys: []jose.JSONWebKey{
+				testKeyRSA_2048_0,
+				testKeyECDSA_256_0,
+			},
+			keyIDs: []string{
+				testKeyRSA_2048_0.KeyID,
+			},
+			wantKeys: []jose.JSONWebKey{
+				testKeyRSA_2048_0,
+			},
+		},
+		{
+			name: "one key id matches",
+			keys: []jose.JSONWebKey{
+				testKeyRSA_2048_0,
+				testKeyECDSA_256_0,
+			},
+			keyIDs: []string{
+				testKeyRSA_2048_0.KeyID,
+				testKeyRSA_2048_1.KeyID,
+			},
+			wantKeys: []jose.JSONWebKey{
+				testKeyRSA_2048_0,
+			},
+		},
+		{
+			name: "no valid keys",
+			keys: []jose.JSONWebKey{
+				testKeyRSA_2048_1,
+				testKeyECDSA_256_0,
+			},
+			keyIDs: []string{
+				testKeyRSA_2048_0.KeyID,
+			},
+		},
+	}
+
+	t0 := time.Now()
+	now := func() time.Time { return t0 }
+
+	for _, test := range tests {
+		func() {
+			ctx, cancel := context.WithCancel(context.Background())
+			defer cancel()
+
+			server := httptest.NewServer(newKeyServer(test.keys...))
+			defer server.Close()
+
+			keySet := newRemoteKeySet(ctx, server.URL, now)
+			gotKeys, err := keySet.keysWithID(ctx, test.keyIDs)
+			if err != nil {
+				t.Errorf("%s: %v", test.name, err)
+				return
+			}
+			if !reflect.DeepEqual(gotKeys, test.wantKeys) {
+				t.Errorf("%s: expected keys=%#v, got=%#v", test.name, test.wantKeys, gotKeys)
+			}
+		}()
+	}
+}

vendor/github.com/coreos/go-oidc/key/doc.go

@@ -0,0 +1,2 @@
+// Package key is DEPRECATED. Use github.com/coreos/go-oidc instead.
+package key

vendor/github.com/coreos/go-oidc/key/key.go

@@ -0,0 +1,153 @@
+package key
+
+import (
+	"crypto/rand"
+	"crypto/rsa"
+	"encoding/hex"
+	"encoding/json"
+	"io"
+	"time"
+
+	"github.com/coreos/go-oidc/jose"
+)
+
+func NewPublicKey(jwk jose.JWK) *PublicKey {
+	return &PublicKey{jwk: jwk}
+}
+
+type PublicKey struct {
+	jwk jose.JWK
+}
+
+func (k *PublicKey) MarshalJSON() ([]byte, error) {
+	return json.Marshal(&k.jwk)
+}
+
+func (k *PublicKey) UnmarshalJSON(data []byte) error {
+	var jwk jose.JWK
+	if err := json.Unmarshal(data, &jwk); err != nil {
+		return err
+	}
+	k.jwk = jwk
+	return nil
+}
+
+func (k *PublicKey) ID() string {
+	return k.jwk.ID
+}
+
+func (k *PublicKey) Verifier() (jose.Verifier, error) {
+	return jose.NewVerifierRSA(k.jwk)
+}
+
+type PrivateKey struct {
+	KeyID      string
+	PrivateKey *rsa.PrivateKey
+}
+
+func (k *PrivateKey) ID() string {
+	return k.KeyID
+}
+
+func (k *PrivateKey) Signer() jose.Signer {
+	return jose.NewSignerRSA(k.ID(), *k.PrivateKey)
+}
+
+func (k *PrivateKey) JWK() jose.JWK {
+	return jose.JWK{
+		ID:       k.KeyID,
+		Type:     "RSA",
+		Alg:      "RS256",
+		Use:      "sig",
+		Exponent: k.PrivateKey.PublicKey.E,
+		Modulus:  k.PrivateKey.PublicKey.N,
+	}
+}
+
+type KeySet interface {
+	ExpiresAt() time.Time
+}
+
+type PublicKeySet struct {
+	keys      []PublicKey
+	index     map[string]*PublicKey
+	expiresAt time.Time
+}
+
+func NewPublicKeySet(jwks []jose.JWK, exp time.Time) *PublicKeySet {
+	keys := make([]PublicKey, len(jwks))
+	index := make(map[string]*PublicKey)
+	for i, jwk := range jwks {
+		keys[i] = *NewPublicKey(jwk)
+		index[keys[i].ID()] = &keys[i]
+	}
+	return &PublicKeySet{
+		keys:      keys,
+		index:     index,
+		expiresAt: exp,
+	}
+}
+
+func (s *PublicKeySet) ExpiresAt() time.Time {
+	return s.expiresAt
+}
+
+func (s *PublicKeySet) Keys() []PublicKey {
+	return s.keys
+}
+
+func (s *PublicKeySet) Key(id string) *PublicKey {
+	return s.index[id]
+}
+
+type PrivateKeySet struct {
+	keys        []*PrivateKey
+	ActiveKeyID string
+	expiresAt   time.Time
+}
+
+func NewPrivateKeySet(keys []*PrivateKey, exp time.Time) *PrivateKeySet {
+	return &PrivateKeySet{
+		keys:        keys,
+		ActiveKeyID: keys[0].ID(),
+		expiresAt:   exp.UTC(),
+	}
+}
+
+func (s *PrivateKeySet) Keys() []*PrivateKey {
+	return s.keys
+}
+
+func (s *PrivateKeySet) ExpiresAt() time.Time {
+	return s.expiresAt
+}
+
+func (s *PrivateKeySet) Active() *PrivateKey {
+	for i, k := range s.keys {
+		if k.ID() == s.ActiveKeyID {
+			return s.keys[i]
+		}
+	}
+
+	return nil
+}
+
+type GeneratePrivateKeyFunc func() (*PrivateKey, error)
+
+func GeneratePrivateKey() (*PrivateKey, error) {
+	pk, err := rsa.GenerateKey(rand.Reader, 2048)
+	if err != nil {
+		return nil, err
+	}
+	keyID := make([]byte, 20)
+	if _, err := io.ReadFull(rand.Reader, keyID); err != nil {
+		return nil, err
+	}
+
+	k := PrivateKey{
+		KeyID:      hex.EncodeToString(keyID),
+		PrivateKey: pk,
+	}
+
+	return &k, nil
+}

vendor/github.com/coreos/go-oidc/key/key_test.go

@@ -0,0 +1,103 @@
+package key
+
+import (
+	"crypto/rsa"
+	"math/big"
+	"reflect"
+	"testing"
+	"time"
+
+	"github.com/coreos/go-oidc/jose"
+)
+
+func TestPrivateRSAKeyJWK(t *testing.T) {
+	n := big.NewInt(int64(17))
+	if n == nil {
+		panic("NewInt returned nil")
+	}
+
+	k := &PrivateKey{
+		KeyID: "foo",
+		PrivateKey: &rsa.PrivateKey{
+			PublicKey: rsa.PublicKey{N: n, E: 65537},
+		},
+	}
+
+	want := jose.JWK{
+		ID:       "foo",
+		Type:     "RSA",
+		Alg:      "RS256",
+		Use:      "sig",
+		Modulus:  n,
+		Exponent: 65537,
+	}
+
+	got := k.JWK()
+	if !reflect.DeepEqual(want, got) {
+		t.Fatalf("JWK mismatch: want=%#v got=%#v", want, got)
+	}
+}
+
+func TestPublicKeySetKey(t *testing.T) {
+	n := big.NewInt(int64(17))
+	if n == nil {
+		panic("NewInt returned nil")
+	}
+
+	k := jose.JWK{
+		ID:       "foo",
+		Type:     "RSA",
+		Alg:      "RS256",
+		Use:      "sig",
+		Modulus:  n,
+		Exponent: 65537,
+	}
+	now := time.Now().UTC()
+	ks := NewPublicKeySet([]jose.JWK{k}, now)
+
+	want := &PublicKey{jwk: k}
+	got := ks.Key("foo")
+	if !reflect.DeepEqual(want, got) {
+		t.Errorf("Unexpected response from PublicKeySet.Key: want=%#v got=%#v", want, got)
+	}
+
+	got = ks.Key("bar")
+	if got != nil {
+		t.Errorf("Expected nil response from PublicKeySet.Key, got %#v", got)
+	}
+}
+
+func TestPublicKeyMarshalJSON(t *testing.T) {
+	k := jose.JWK{
+		ID:       "foo",
+		Type:     "RSA",
+		Alg:      "RS256",
+		Use:      "sig",
+		Modulus:  big.NewInt(int64(17)),
+		Exponent: 65537,
+	}
+	want := `{"kid":"foo","kty":"RSA","alg":"RS256","use":"sig","e":"AQAB","n":"EQ"}`
+	pubKey := NewPublicKey(k)
+	gotBytes, err := pubKey.MarshalJSON()
+	if err != nil {
+		t.Fatalf("failed to marshal public key: %v", err)
+	}
+	got := string(gotBytes)
+	if got != want {
+		t.Errorf("got != want:\n%s\n%s", got, want)
+	}
+}
+
+func TestGeneratePrivateKeyIDs(t *testing.T) {
+	key1, err := GeneratePrivateKey()
+	if err != nil {
+		t.Fatalf("GeneratePrivateKey(): %v", err)
+	}
+	key2, err := GeneratePrivateKey()
+	if err != nil {
+		t.Fatalf("GeneratePrivateKey(): %v", err)
+	}
+	if key1.KeyID == key2.KeyID {
+		t.Fatalf("expected different keys to have different key IDs")
+	}
+}

vendor/github.com/coreos/go-oidc/key/manager.go

@@ -0,0 +1,99 @@
+package key
+
+import (
+	"errors"
+	"time"
+
+	"github.com/jonboulle/clockwork"
+
+	"github.com/coreos/go-oidc/jose"
+	"github.com/coreos/pkg/health"
+)
+
+type PrivateKeyManager interface {
+	ExpiresAt() time.Time
+	Signer() (jose.Signer, error)
+	JWKs() ([]jose.JWK, error)
+	PublicKeys() ([]PublicKey, error)
+
+	WritableKeySetRepo
+	health.Checkable
+}
+
+func NewPrivateKeyManager() PrivateKeyManager {
+	return &privateKeyManager{
+		clock: clockwork.NewRealClock(),
+	}
+}
+
+type privateKeyManager struct {
+	keySet *PrivateKeySet
+	clock  clockwork.Clock
+}
+
+func (m *privateKeyManager) ExpiresAt() time.Time {
+	if m.keySet == nil {
+		return m.clock.Now().UTC()
+	}
+
+	return m.keySet.ExpiresAt()
+}
+
+func (m *privateKeyManager) Signer() (jose.Signer, error) {
+	if err := m.Healthy(); err != nil {
+		return nil, err
+	}
+
+	return m.keySet.Active().Signer(), nil
+}
+
+func (m *privateKeyManager) JWKs() ([]jose.JWK, error) {
+	if err := m.Healthy(); err != nil {
+		return nil, err
+	}
+
+	keys := m.keySet.Keys()
+	jwks := make([]jose.JWK, len(keys))
+	for i, k := range keys {
+		jwks[i] = k.JWK()
+	}
+	return jwks, nil
+}
+
+func (m *privateKeyManager) PublicKeys() ([]PublicKey, error) {
+	jwks, err := m.JWKs()
+	if err != nil {
+		return nil, err
+	}
+	keys := make([]PublicKey, len(jwks))
+	for i, jwk := range jwks {
+		keys[i] = *NewPublicKey(jwk)
+	}
+	return keys, nil
+}
+
+func (m *privateKeyManager) Healthy() error {
+	if m.keySet == nil {
+		return errors.New("private key manager uninitialized")
+	}
+
+	if len(m.keySet.Keys()) == 0 {
+		return errors.New("private key manager zero keys")
+	}
+
+	if m.keySet.ExpiresAt().Before(m.clock.Now().UTC()) {
+		return errors.New("private key manager keys expired")
+	}
+
+	return nil
+}
+
+func (m *privateKeyManager) Set(keySet KeySet) error {
+	privKeySet, ok := keySet.(*PrivateKeySet)
+	if !ok {
+		return errors.New("unable to cast to PrivateKeySet")
+	}
+
+	m.keySet = privKeySet
+	return nil
+}

vendor/github.com/coreos/go-oidc/key/manager_test.go

@@ -0,0 +1,225 @@
+package key
+
+import (
+	"crypto/rsa"
+	"math/big"
+	"reflect"
+	"strconv"
+	"testing"
+	"time"
+
+	"github.com/jonboulle/clockwork"
+
+	"github.com/coreos/go-oidc/jose"
+)
+
+var (
+	jwk1 jose.JWK
+	jwk2 jose.JWK
+	jwk3 jose.JWK
+)
+
+func init() {
+	jwk1 = jose.JWK{
+		ID:       "1",
+		Type:     "RSA",
+		Alg:      "RS256",
+		Use:      "sig",
+		Modulus:  big.NewInt(1),
+		Exponent: 65537,
+	}
+
+	jwk2 = jose.JWK{
+		ID:       "2",
+		Type:     "RSA",
+		Alg:      "RS256",
+		Use:      "sig",
+		Modulus:  big.NewInt(2),
+		Exponent: 65537,
+	}
+
+	jwk3 = jose.JWK{
+		ID:       "3",
+		Type:     "RSA",
+		Alg:      "RS256",
+		Use:      "sig",
+		Modulus:  big.NewInt(3),
+		Exponent: 65537,
+	}
+}
+
+func generatePrivateKeyStatic(t *testing.T, idAndN int) *PrivateKey {
+	n := big.NewInt(int64(idAndN))
+	if n == nil {
+		t.Fatalf("Call to NewInt(%d) failed", idAndN)
+	}
+
+	pk := &rsa.PrivateKey{
+		PublicKey: rsa.PublicKey{N: n, E: 65537},
+	}
+
+	return &PrivateKey{
+		KeyID:      strconv.Itoa(idAndN),
+		PrivateKey: pk,
+	}
+}
+
+func TestPrivateKeyManagerJWKsRotate(t *testing.T) {
+	k1 := generatePrivateKeyStatic(t, 1)
+	k2 := generatePrivateKeyStatic(t, 2)
+	k3 := generatePrivateKeyStatic(t, 3)
+	km := NewPrivateKeyManager()
+	err := km.Set(&PrivateKeySet{
+		keys:        []*PrivateKey{k1, k2, k3},
+		ActiveKeyID: k1.KeyID,
+		expiresAt:   time.Now().Add(time.Minute),
+	})
+	if err != nil {
+		t.Fatalf("Unexpected error: %v", err)
+	}
+
+	want := []jose.JWK{jwk1, jwk2, jwk3}
+	got, err := km.JWKs()
+	if err != nil {
+		t.Fatalf("Unexpected error: %v", err)
+	}
+	if !reflect.DeepEqual(want, got) {
+		t.Fatalf("JWK mismatch: want=%#v got=%#v", want, got)
+	}
+}
+
+func TestPrivateKeyManagerSigner(t *testing.T) {
+	k := generatePrivateKeyStatic(t, 13)
+
+	km := NewPrivateKeyManager()
+	err := km.Set(&PrivateKeySet{
+		keys:        []*PrivateKey{k},
+		ActiveKeyID: k.KeyID,
+		expiresAt:   time.Now().Add(time.Minute),
+	})
+	if err != nil {
+		t.Fatalf("Unexpected error: %v", err)
+	}
+
+	signer, err := km.Signer()
+	if err != nil {
+		t.Fatalf("Unexpected error: %v", err)
+	}
+
+	wantID := "13"
+	gotID := signer.ID()
+	if wantID != gotID {
+		t.Fatalf("Signer has incorrect ID: want=%s got=%s", wantID, gotID)
+	}
+}
+
+func TestPrivateKeyManagerHealthyFail(t *testing.T) {
+	keyFixture := generatePrivateKeyStatic(t, 1)
+	tests := []*privateKeyManager{
+		// keySet nil
+		&privateKeyManager{
+			keySet: nil,
+			clock:  clockwork.NewRealClock(),
+		},
+		// zero keys
+		&privateKeyManager{
+			keySet: &PrivateKeySet{
+				keys:      []*PrivateKey{},
+				expiresAt: time.Now().Add(time.Minute),
+			},
+			clock: clockwork.NewRealClock(),
+		},
+		// key set expired
+		&privateKeyManager{
+			keySet: &PrivateKeySet{
+				keys:      []*PrivateKey{keyFixture},
+				expiresAt: time.Now().Add(-1 * time.Minute),
+			},
+			clock: clockwork.NewRealClock(),
+		},
+	}
+
+	for i, tt := range tests {
+		if err := tt.Healthy(); err == nil {
+			t.Errorf("case %d: nil error", i)
+		}
+	}
+}
+
+func TestPrivateKeyManagerHealthyFailsOtherMethods(t *testing.T) {
+	km := NewPrivateKeyManager()
+	if _, err := km.JWKs(); err == nil {
+		t.Fatalf("Expected non-nil error")
+	}
+	if _, err := km.Signer(); err == nil {
+		t.Fatalf("Expected non-nil error")
+	}
+}
+
+func TestPrivateKeyManagerExpiresAt(t *testing.T) {
+	fc := clockwork.NewFakeClock()
+	now := fc.Now().UTC()
+
+	k := generatePrivateKeyStatic(t, 17)
+	km := &privateKeyManager{
+		clock: fc,
+	}
+
+	want := fc.Now().UTC()
+	got := km.ExpiresAt()
+	if want != got {
+		t.Fatalf("Incorrect expiration time: want=%v got=%v", want, got)
+	}
+
+	err := km.Set(&PrivateKeySet{
+		keys:        []*PrivateKey{k},
+		ActiveKeyID: k.KeyID,
+		expiresAt:   now.Add(2 * time.Minute),
+	})
+	if err != nil {
+		t.Fatalf("Unexpected error: %v", err)
+	}
+
+	want = fc.Now().UTC().Add(2 * time.Minute)
+	got = km.ExpiresAt()
+	if want != got {
+		t.Fatalf("Incorrect expiration time: want=%v got=%v", want, got)
+	}
+}
+
+func TestPublicKeys(t *testing.T) {
+	km := NewPrivateKeyManager()
+	k1 := generatePrivateKeyStatic(t, 1)
+	k2 := generatePrivateKeyStatic(t, 2)
+	k3 := generatePrivateKeyStatic(t, 3)
+
+	tests := [][]*PrivateKey{
+		[]*PrivateKey{k1},
+		[]*PrivateKey{k1, k2},
+		[]*PrivateKey{k1, k2, k3},
+	}
+
+	for i, tt := range tests {
+		ks := &PrivateKeySet{
+			keys:      tt,
+			expiresAt: time.Now().Add(time.Hour),
+		}
+		km.Set(ks)
+
+		jwks, err := km.JWKs()
+		if err != nil {
+			t.Fatalf("Unexpected error: %v", err)
+		}
+
+		pks := NewPublicKeySet(jwks, time.Now().Add(time.Hour))
+		want := pks.Keys()
+		got, err := km.PublicKeys()
+		if err != nil {
+			t.Fatalf("Unexpected error: %v", err)
+		}
+
+		if !reflect.DeepEqual(want, got) {
+			t.Errorf("case %d: Invalid public keys: want=%v got=%v", i, want, got)
+		}
+	}
+}

vendor/github.com/coreos/go-oidc/key/repo.go

@@ -0,0 +1,55 @@
+package key
+
+import (
+	"errors"
+	"sync"
+)
+
+var ErrorNoKeys = errors.New("no keys found")
+
+type WritableKeySetRepo interface {
+	Set(KeySet) error
+}
+
+type ReadableKeySetRepo interface {
+	Get() (KeySet, error)
+}
+
+type PrivateKeySetRepo interface {
+	WritableKeySetRepo
+	ReadableKeySetRepo
+}
+
+func NewPrivateKeySetRepo() PrivateKeySetRepo {
+	return &memPrivateKeySetRepo{}
+}
+
+type memPrivateKeySetRepo struct {
+	mu  sync.RWMutex
+	pks PrivateKeySet
+}
+
+func (r *memPrivateKeySetRepo) Set(ks KeySet) error {
+	pks, ok := ks.(*PrivateKeySet)
+	if !ok {
+		return errors.New("unable to cast to PrivateKeySet")
+	} else if pks == nil {
+		return errors.New("nil KeySet")
+	}
+
+	r.mu.Lock()
+	defer r.mu.Unlock()
+
+	r.pks = *pks
+	return nil
+}
+
+func (r *memPrivateKeySetRepo) Get() (KeySet, error) {
+	r.mu.RLock()
+	defer r.mu.RUnlock()
+
+	if r.pks.keys == nil {
+		return nil, ErrorNoKeys
+	}
+	return KeySet(&r.pks), nil
+}

vendor/github.com/coreos/go-oidc/key/rotate.go

@@ -0,0 +1,159 @@
+package key
+
+import (
+	"errors"
+	"log"
+	"time"
+
+	ptime "github.com/coreos/pkg/timeutil"
+	"github.com/jonboulle/clockwork"
+)
+
+var (
+	ErrorPrivateKeysExpired = errors.New("private keys have expired")
+)
+
+func NewPrivateKeyRotator(repo PrivateKeySetRepo, ttl time.Duration) *PrivateKeyRotator {
+	return &PrivateKeyRotator{
+		repo: repo,
+		ttl:  ttl,
+
+		keep:        2,
+		generateKey: GeneratePrivateKey,
+		clock:       clockwork.NewRealClock(),
+	}
+}
+
+type PrivateKeyRotator struct {
+	repo        PrivateKeySetRepo
+	generateKey GeneratePrivateKeyFunc
+	clock       clockwork.Clock
+	keep        int
+	ttl         time.Duration
+}
+
+func (r *PrivateKeyRotator) expiresAt() time.Time {
+	return r.clock.Now().UTC().Add(r.ttl)
+}
+
+func (r *PrivateKeyRotator) Healthy() error {
+	pks, err := r.privateKeySet()
+	if err != nil {
+		return err
+	}
+
+	if r.clock.Now().After(pks.ExpiresAt()) {
+		return ErrorPrivateKeysExpired
+	}
+
+	return nil
+}
+
+func (r *PrivateKeyRotator) privateKeySet() (*PrivateKeySet, error) {
+	ks, err := r.repo.Get()
+	if err != nil {
+		return nil, err
+	}
+
+	pks, ok := ks.(*PrivateKeySet)
+	if !ok {
+		return nil, errors.New("unable to cast to PrivateKeySet")
+	}
+	return pks, nil
+}
+
+func (r *PrivateKeyRotator) nextRotation() (time.Duration, error) {
+	pks, err := r.privateKeySet()
+	if err == ErrorNoKeys {
+		return 0, nil
+	}
+	if err != nil {
+		return 0, err
+	}
+
+	now := r.clock.Now()
+
+	// Ideally, we want to rotate after half the TTL has elapsed.
+	idealRotationTime := pks.ExpiresAt().Add(-r.ttl / 2)
+
+	// If we are past the ideal rotation time, rotate immediatly.
+	return max(0, idealRotationTime.Sub(now)), nil
+}
+
+func max(a, b time.Duration) time.Duration {
+	if a > b {
+		return a
+	}
+	return b
+}
+
+func (r *PrivateKeyRotator) Run() chan struct{} {
+	attempt := func() {
+		k, err := r.generateKey()
+		if err != nil {
+			log.Printf("go-oidc: failed generating signing key: %v", err)
+			return
+		}
+
+		exp := r.expiresAt()
+		if err := rotatePrivateKeys(r.repo, k, r.keep, exp); err != nil {
+			log.Printf("go-oidc: key rotation failed: %v", err)
+			return
+		}
+	}
+
+	stop := make(chan struct{})
+	go func() {
+		for {
+			var nextRotation time.Duration
+			var sleep time.Duration
+			var err error
+			for {
+				if nextRotation, err = r.nextRotation(); err == nil {
+					break
+				}
+				sleep = ptime.ExpBackoff(sleep, time.Minute)
+				log.Printf("go-oidc: error getting nextRotation, retrying in %v: %v", sleep, err)
+				time.Sleep(sleep)
+			}
+
+			select {
+			case <-r.clock.After(nextRotation):
+				attempt()
+			case <-stop:
+				return
+			}
+		}
+	}()
+
+	return stop
+}
+
+func rotatePrivateKeys(repo PrivateKeySetRepo, k *PrivateKey, keep int, exp time.Time) error {
+	ks, err := repo.Get()
+	if err != nil && err != ErrorNoKeys {
+		return err
+	}
+
+	var keys []*PrivateKey
+	if ks != nil {
+		pks, ok := ks.(*PrivateKeySet)
+		if !ok {
+			return errors.New("unable to cast to PrivateKeySet")
+		}
+		keys = pks.Keys()
+	}
+
+	keys = append([]*PrivateKey{k}, keys...)
+	if l := len(keys); l > keep {
+		keys = keys[0:keep]
+	}
+
+	nks := PrivateKeySet{
+		keys:        keys,
+		ActiveKeyID: k.ID(),
+		expiresAt:   exp,
+	}
+
+	return repo.Set(KeySet(&nks))
+}

vendor/github.com/coreos/go-oidc/key/rotate_test.go

@@ -0,0 +1,311 @@
+package key
+
+import (
+	"reflect"
+	"testing"
+	"time"
+
+	"github.com/jonboulle/clockwork"
+)
+
+func generatePrivateKeySerialFunc(t *testing.T) GeneratePrivateKeyFunc {
+	var n int
+	return func() (*PrivateKey, error) {
+		n++
+		return generatePrivateKeyStatic(t, n), nil
+	}
+}
+
+func TestRotate(t *testing.T) {
+	now := time.Now()
+	k1 := generatePrivateKeyStatic(t, 1)
+	k2 := generatePrivateKeyStatic(t, 2)
+	k3 := generatePrivateKeyStatic(t, 3)
+
+	tests := []struct {
+		start *PrivateKeySet
+		key   *PrivateKey
+		keep  int
+		exp   time.Time
+		want  *PrivateKeySet
+	}{
+		// start with nil keys
+		{
+			start: nil,
+			key:   k1,
+			keep:  2,
+			exp:   now.Add(time.Second),
+			want: &PrivateKeySet{
+				keys:        []*PrivateKey{k1},
+				ActiveKeyID: k1.KeyID,
+				expiresAt:   now.Add(time.Second),
+			},
+		},
+		// start with zero keys
+		{
+			start: &PrivateKeySet{},
+			key:   k1,
+			keep:  2,
+			exp:   now.Add(time.Second),
+			want: &PrivateKeySet{
+				keys:        []*PrivateKey{k1},
+				ActiveKeyID: k1.KeyID,
+				expiresAt:   now.Add(time.Second),
+			},
+		},
+		// add second key
+		{
+			start: &PrivateKeySet{
+				keys:        []*PrivateKey{k1},
+				ActiveKeyID: k1.KeyID,
+				expiresAt:   now,
+			},
+			key:  k2,
+			keep: 2,
+			exp:  now.Add(time.Second),
+			want: &PrivateKeySet{
+				keys:        []*PrivateKey{k2, k1},
+				ActiveKeyID: k2.KeyID,
+				expiresAt:   now.Add(time.Second),
+			},
+		},
+		// rotate in third key
+		{
+			start: &PrivateKeySet{
+				keys:        []*PrivateKey{k2, k1},
+				ActiveKeyID: k2.KeyID,
+				expiresAt:   now,
+			},
+			key:  k3,
+			keep: 2,
+			exp:  now.Add(time.Second),
+			want: &PrivateKeySet{
+				keys:        []*PrivateKey{k3, k2},
+				ActiveKeyID: k3.KeyID,
+				expiresAt:   now.Add(time.Second),
+			},
+		},
+	}
+
+	for i, tt := range tests {
+		repo := NewPrivateKeySetRepo()
+		if tt.start != nil {
+			err := repo.Set(tt.start)
+			if err != nil {
+				t.Fatalf("case %d: unexpected error: %v", i, err)
+			}
+		}
+
+		rotatePrivateKeys(repo, tt.key, tt.keep, tt.exp)
+		got, err := repo.Get()
+		if err != nil {
+			t.Errorf("case %d: unexpected error: %v", i, err)
+			continue
+		}
+		if !reflect.DeepEqual(tt.want, got) {
+			t.Errorf("case %d: unexpected result: want=%#v got=%#v", i, tt.want, got)
+		}
+	}
+}
+
+func TestPrivateKeyRotatorRun(t *testing.T) {
+	fc := clockwork.NewFakeClock()
+	now := fc.Now().UTC()
+
+	k1 := generatePrivateKeyStatic(t, 1)
+	k2 := generatePrivateKeyStatic(t, 2)
+	k3 := generatePrivateKeyStatic(t, 3)
+	k4 := generatePrivateKeyStatic(t, 4)
+
+	kRepo := NewPrivateKeySetRepo()
+	krot := NewPrivateKeyRotator(kRepo, 4*time.Second)
+	krot.clock = fc
+	krot.generateKey = generatePrivateKeySerialFunc(t)
+
+	steps := []*PrivateKeySet{
+		&PrivateKeySet{
+			keys:        []*PrivateKey{k1},
+			ActiveKeyID: k1.KeyID,
+			expiresAt:   now.Add(4 * time.Second),
+		},
+		&PrivateKeySet{
+			keys:        []*PrivateKey{k2, k1},
+			ActiveKeyID: k2.KeyID,
+			expiresAt:   now.Add(6 * time.Second),
+		},
+		&PrivateKeySet{
+			keys:        []*PrivateKey{k3, k2},
+			ActiveKeyID: k3.KeyID,
+			expiresAt:   now.Add(8 * time.Second),
+		},
+		&PrivateKeySet{
+			keys:        []*PrivateKey{k4, k3},
+			ActiveKeyID: k4.KeyID,
+			expiresAt:   now.Add(10 * time.Second),
+		},
+	}
+
+	stop := krot.Run()
+	defer close(stop)
+
+	for i, st := range steps {
+		// wait for the rotater to get sleepy
+		fc.BlockUntil(1)
+
+		got, err := kRepo.Get()
+		if err != nil {
+			t.Fatalf("step %d: unexpected error: %v", i, err)
+		}
+		if !reflect.DeepEqual(st, got) {
+			t.Fatalf("step %d: unexpected state: want=%#v got=%#v", i, st, got)
+		}
+		fc.Advance(2 * time.Second)
+	}
+}
+
+func TestPrivateKeyRotatorExpiresAt(t *testing.T) {
+	fc := clockwork.NewFakeClock()
+	krot := &PrivateKeyRotator{
+		clock: fc,
+		ttl:   time.Minute,
+	}
+	got := krot.expiresAt()
+	want := fc.Now().UTC().Add(time.Minute)
+	if !reflect.DeepEqual(want, got) {
+		t.Errorf("Incorrect expiration time: want=%v got=%v", want, got)
+	}
+}
+
+func TestNextRotation(t *testing.T) {
+	fc := clockwork.NewFakeClock()
+	now := fc.Now().UTC()
+
+	tests := []struct {
+		expiresAt time.Time
+		ttl       time.Duration
+		numKeys   int
+		expected  time.Duration
+	}{
+		{
+			// closest to prod
+			expiresAt: now.Add(time.Hour * 24),
+			ttl:       time.Hour * 24,
+			numKeys:   2,
+			expected:  time.Hour * 12,
+		},
+		{
+			expiresAt: now.Add(time.Hour * 2),
+			ttl:       time.Hour * 4,
+			numKeys:   2,
+			expected:  0,
+		},
+		{
+			// No keys.
+			expiresAt: now.Add(time.Hour * 2),
+			ttl:       time.Hour * 4,
+			numKeys:   0,
+			expected:  0,
+		},
+		{
+			// Nil keyset.
+			expiresAt: now.Add(time.Hour * 2),
+			ttl:       time.Hour * 4,
+			numKeys:   -1,
+			expected:  0,
+		},
+		{
+			// KeySet expired.
+			expiresAt: now.Add(time.Hour * -2),
+			ttl:       time.Hour * 4,
+			numKeys:   2,
+			expected:  0,
+		},
+		{
+			// Expiry past now + TTL
+			expiresAt: now.Add(time.Hour * 5),
+			ttl:       time.Hour * 4,
+			numKeys:   2,
+			expected:  3 * time.Hour,
+		},
+	}
+
+	for i, tt := range tests {
+		kRepo := NewPrivateKeySetRepo()
+		krot := NewPrivateKeyRotator(kRepo, tt.ttl)
+		krot.clock = fc
+		pks := &PrivateKeySet{
+			expiresAt: tt.expiresAt,
+		}
+		if tt.numKeys != -1 {
+			for n := 0; n < tt.numKeys; n++ {
+				pks.keys = append(pks.keys, generatePrivateKeyStatic(t, n))
+			}
+			err := kRepo.Set(pks)
+			if err != nil {
+				t.Fatalf("case %d: unexpected error: %v", i, err)
+			}
+
+		}
+		actual, err := krot.nextRotation()
+		if err != nil {
+			t.Errorf("case %d: error calling shouldRotate(): %v", i, err)
+		}
+		if actual != tt.expected {
+			t.Errorf("case %d: actual == %v, want %v", i, actual, tt.expected)
+		}
+	}
+}
+
+func TestHealthy(t *testing.T) {
+	fc := clockwork.NewFakeClock()
+	now := fc.Now().UTC()
+
+	tests := []struct {
+		expiresAt time.Time
+		numKeys   int
+		expected  error
+	}{
+		{
+			expiresAt: now.Add(time.Hour),
+			numKeys:   2,
+			expected:  nil,
+		},
+		{
+			expiresAt: now.Add(time.Hour),
+			numKeys:   -1,
+			expected:  ErrorNoKeys,
+		},
+		{
+			expiresAt: now.Add(time.Hour),
+			numKeys:   0,
+			expected:  ErrorNoKeys,
+		},
+		{
+			expiresAt: now.Add(-time.Hour),
+			numKeys:   2,
+			expected:  ErrorPrivateKeysExpired,
+		},
+	}
+
+	for i, tt := range tests {
+		kRepo := NewPrivateKeySetRepo()
+		krot := NewPrivateKeyRotator(kRepo, time.Hour)
+		krot.clock = fc
+		pks := &PrivateKeySet{
+			expiresAt: tt.expiresAt,
+		}
+		if tt.numKeys != -1 {
+			for n := 0; n < tt.numKeys; n++ {
+				pks.keys = append(pks.keys, generatePrivateKeyStatic(t, n))
+			}
+			err := kRepo.Set(pks)
+			if err != nil {
+				t.Fatalf("case %d: unexpected error: %v", i, err)
+			}
+
+		}
+		if err := krot.Healthy(); err != tt.expected {
+			t.Errorf("case %d: got==%q, want==%q", i, err, tt.expected)
+		}
+	}
+}

vendor/github.com/coreos/go-oidc/key/sync.go

@@ -0,0 +1,91 @@
+package key
+
+import (
+	"errors"
+	"log"
+	"time"
+
+	"github.com/jonboulle/clockwork"
+
+	"github.com/coreos/pkg/timeutil"
+)
+
+func NewKeySetSyncer(r ReadableKeySetRepo, w WritableKeySetRepo) *KeySetSyncer {
+	return &KeySetSyncer{
+		readable: r,
+		writable: w,
+		clock:    clockwork.NewRealClock(),
+	}
+}
+
+type KeySetSyncer struct {
+	readable ReadableKeySetRepo
+	writable WritableKeySetRepo
+	clock    clockwork.Clock
+}
+
+func (s *KeySetSyncer) Run() chan struct{} {
+	stop := make(chan struct{})
+	go func() {
+		var failing bool
+		var next time.Duration
+		for {
+			exp, err := syncKeySet(s.readable, s.writable, s.clock)
+			if err != nil || exp == 0 {
+				if !failing {
+					failing = true
+					next = time.Second
+				} else {
+					next = timeutil.ExpBackoff(next, time.Minute)
+				}
+				if exp == 0 {
+					log.Printf("Synced to already expired key set, retrying in %v: %v", next, err)
+
+				} else {
+					log.Printf("Failed syncing key set, retrying in %v: %v", next, err)
+				}
+			} else {
+				failing = false
+				next = exp / 2
+			}
+
+			select {
+			case <-s.clock.After(next):
+				continue
+			case <-stop:
+				return
+			}
+		}
+	}()
+
+	return stop
+}
+
+func Sync(r ReadableKeySetRepo, w WritableKeySetRepo) (time.Duration, error) {
+	return syncKeySet(r, w, clockwork.NewRealClock())
+}
+
+// syncKeySet copies the keyset from r to the KeySet at w and returns the duration in which the KeySet will expire.
+// If keyset has already expired, returns a zero duration.
+func syncKeySet(r ReadableKeySetRepo, w WritableKeySetRepo, clock clockwork.Clock) (exp time.Duration, err error) {
+	var ks KeySet
+	ks, err = r.Get()
+	if err != nil {
+		return
+	}
+
+	if ks == nil {
+		err = errors.New("no source KeySet")
+		return
+	}
+
+	if err = w.Set(ks); err != nil {
+		return
+	}
+
+	now := clock.Now()
+	if ks.ExpiresAt().After(now) {
+		exp = ks.ExpiresAt().Sub(now)
+	}
+	return
+}

vendor/github.com/coreos/go-oidc/key/sync_test.go

@@ -0,0 +1,214 @@
+package key
+
+import (
+	"errors"
+	"reflect"
+	"sync"
+	"testing"
+	"time"
+
+	"github.com/jonboulle/clockwork"
+)
+
+type staticReadableKeySetRepo struct {
+	mu  sync.RWMutex
+	ks  KeySet
+	err error
+}
+
+func (r *staticReadableKeySetRepo) Get() (KeySet, error) {
+	r.mu.RLock()
+	defer r.mu.RUnlock()
+	return r.ks, r.err
+}
+
+func (r *staticReadableKeySetRepo) set(ks KeySet, err error) {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+	r.ks, r.err = ks, err
+}
+
+func TestKeySyncerSync(t *testing.T) {
+	fc := clockwork.NewFakeClock()
+	now := fc.Now().UTC()
+
+	k1 := generatePrivateKeyStatic(t, 1)
+	k2 := generatePrivateKeyStatic(t, 2)
+	k3 := generatePrivateKeyStatic(t, 3)
+
+	steps := []struct {
+		fromKS  KeySet
+		fromErr error
+		advance time.Duration
+		want    *PrivateKeySet
+	}{
+		// on startup, first sync should trigger within a second
+		{
+			fromKS: &PrivateKeySet{
+				keys:        []*PrivateKey{k1},
+				ActiveKeyID: k1.KeyID,
+				expiresAt:   now.Add(10 * time.Second),
+			},
+			advance: time.Second,
+			want: &PrivateKeySet{
+				keys:        []*PrivateKey{k1},
+				ActiveKeyID: k1.KeyID,
+				expiresAt:   now.Add(10 * time.Second),
+			},
+		},
+		// advance halfway into TTL, triggering sync
+		{
+			fromKS: &PrivateKeySet{
+				keys:        []*PrivateKey{k2, k1},
+				ActiveKeyID: k2.KeyID,
+				expiresAt:   now.Add(15 * time.Second),
+			},
+			advance: 5 * time.Second,
+			want: &PrivateKeySet{
+				keys:        []*PrivateKey{k2, k1},
+				ActiveKeyID: k2.KeyID,
+				expiresAt:   now.Add(15 * time.Second),
+			},
+		},
+
+		// advance halfway into TTL, triggering sync that fails
+		{
+			fromErr: errors.New("fail!"),
+			advance: 10 * time.Second,
+			want: &PrivateKeySet{
+				keys:        []*PrivateKey{k2, k1},
+				ActiveKeyID: k2.KeyID,
+				expiresAt:   now.Add(15 * time.Second),
+			},
+		},
+
+		// sync retries quickly, and succeeds with fixed data
+		{
+			fromKS: &PrivateKeySet{
+				keys:        []*PrivateKey{k3, k2, k1},
+				ActiveKeyID: k3.KeyID,
+				expiresAt:   now.Add(25 * time.Second),
+			},
+			advance: 3 * time.Second,
+			want: &PrivateKeySet{
+				keys:        []*PrivateKey{k3, k2, k1},
+				ActiveKeyID: k3.KeyID,
+				expiresAt:   now.Add(25 * time.Second),
+			},
+		},
+	}
+
+	from := &staticReadableKeySetRepo{}
+	to := NewPrivateKeySetRepo()
+
+	syncer := NewKeySetSyncer(from, to)
+	syncer.clock = fc
+	stop := syncer.Run()
+	defer close(stop)
+
+	for i, st := range steps {
+		from.set(st.fromKS, st.fromErr)
+
+		fc.Advance(st.advance)
+		fc.BlockUntil(1)
+
+		ks, err := to.Get()
+		if err != nil {
+			t.Fatalf("step %d: unable to get keys: %v", i, err)
+		}
+		if !reflect.DeepEqual(st.want, ks) {
+			t.Fatalf("step %d: incorrect state: want=%#v got=%#v", i, st.want, ks)
+		}
+	}
+}
+
+func TestSync(t *testing.T) {
+	fc := clockwork.NewFakeClock()
+	now := fc.Now().UTC()
+
+	k1 := generatePrivateKeyStatic(t, 1)
+	k2 := generatePrivateKeyStatic(t, 2)
+	k3 := generatePrivateKeyStatic(t, 3)
+
+	tests := []struct {
+		keySet *PrivateKeySet
+		want   time.Duration
+	}{
+		{
+			keySet: &PrivateKeySet{
+				keys:        []*PrivateKey{k1},
+				ActiveKeyID: k1.KeyID,
+				expiresAt:   now.Add(time.Minute),
+			},
+			want: time.Minute,
+		},
+		{
+			keySet: &PrivateKeySet{
+				keys:        []*PrivateKey{k2, k1},
+				ActiveKeyID: k2.KeyID,
+				expiresAt:   now.Add(time.Minute),
+			},
+			want: time.Minute,
+		},
+		{
+			keySet: &PrivateKeySet{
+				keys:        []*PrivateKey{k3, k2, k1},
+				ActiveKeyID: k2.KeyID,
+				expiresAt:   now.Add(time.Minute),
+			},
+			want: time.Minute,
+		},
+		{
+			keySet: &PrivateKeySet{
+				keys:        []*PrivateKey{k2, k1},
+				ActiveKeyID: k2.KeyID,
+				expiresAt:   now.Add(time.Hour),
+			},
+			want: time.Hour,
+		},
+		{
+			keySet: &PrivateKeySet{
+				keys:        []*PrivateKey{k1},
+				ActiveKeyID: k1.KeyID,
+				expiresAt:   now.Add(-time.Hour),
+			},
+			want: 0,
+		},
+	}
+
+	for i, tt := range tests {
+		from := NewPrivateKeySetRepo()
+		to := NewPrivateKeySetRepo()
+
+		err := from.Set(tt.keySet)
+		if err != nil {
+			t.Errorf("case %d: unexpected error: %v", i, err)
+			continue
+		}
+		exp, err := syncKeySet(from, to, fc)
+		if err != nil {
+			t.Errorf("case %d: unexpected error: %v", i, err)
+			continue
+		}
+
+		if tt.want != exp {
+			t.Errorf("case %d: want=%v got=%v", i, tt.want, exp)
+		}
+	}
+}
+
+func TestSyncFail(t *testing.T) {
+	tests := []error{
+		nil,
+		errors.New("fail!"),
+	}
+
+	for i, tt := range tests {
+		from := &staticReadableKeySetRepo{ks: nil, err: tt}
+		to := NewPrivateKeySetRepo()
+
+		if _, err := syncKeySet(from, to, clockwork.NewFakeClock()); err == nil {
+			t.Errorf("case %d: expected non-nil error", i)
+		}
+	}
+}

vendor/github.com/coreos/go-oidc/oauth2/doc.go

@@ -0,0 +1,2 @@
+// Package oauth2 is DEPRECATED. Use golang.org/x/oauth instead.
+package oauth2

vendor/github.com/coreos/go-oidc/oauth2/error.go

@@ -0,0 +1,29 @@
+package oauth2
+
+const (
+	ErrorAccessDenied            = "access_denied"
+	ErrorInvalidClient           = "invalid_client"
+	ErrorInvalidGrant            = "invalid_grant"
+	ErrorInvalidRequest          = "invalid_request"
+	ErrorServerError             = "server_error"
+	ErrorUnauthorizedClient      = "unauthorized_client"
+	ErrorUnsupportedGrantType    = "unsupported_grant_type"
+	ErrorUnsupportedResponseType = "unsupported_response_type"
+)
+
+type Error struct {
+	Type        string `json:"error"`
+	Description string `json:"error_description,omitempty"`
+	State       string `json:"state,omitempty"`
+}
+
+func (e *Error) Error() string {
+	if e.Description != "" {
+		return e.Type + ": " + e.Description
+	}
+	return e.Type
+}
+
+func NewError(typ string) *Error {
+	return &Error{Type: typ}
+}

vendor/github.com/coreos/go-oidc/oauth2/oauth2.go

@@ -0,0 +1,416 @@
+package oauth2
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io/ioutil"
+	"mime"
+	"net/http"
+	"net/url"
+	"sort"
+	"strconv"
+	"strings"
+
+	phttp "github.com/coreos/go-oidc/http"
+)
+
+// ResponseTypesEqual compares two response_type values. If either
+// contains a space, it is treated as an unordered list. For example,
+// comparing "code id_token" and "id_token code" would evaluate to true.
+func ResponseTypesEqual(r1, r2 string) bool {
+	if !strings.Contains(r1, " ") || !strings.Contains(r2, " ") {
+		// fast route, no split needed
+		return r1 == r2
+	}
+
+	// split, sort, and compare
+	r1Fields := strings.Fields(r1)
+	r2Fields := strings.Fields(r2)
+	if len(r1Fields) != len(r2Fields) {
+		return false
+	}
+	sort.Strings(r1Fields)
+	sort.Strings(r2Fields)
+	for i, r1Field := range r1Fields {
+		if r1Field != r2Fields[i] {
+			return false
+		}
+	}
+	return true
+}
+
+const (
+	// OAuth2.0 response types registered by OIDC.
+	//
+	// See: https://openid.net/specs/oauth-v2-multiple-response-types-1_0.html#RegistryContents
+	ResponseTypeCode             = "code"
+	ResponseTypeCodeIDToken      = "code id_token"
+	ResponseTypeCodeIDTokenToken = "code id_token token"
+	ResponseTypeIDToken          = "id_token"
+	ResponseTypeIDTokenToken     = "id_token token"
+	ResponseTypeToken            = "token"
+	ResponseTypeNone             = "none"
+)
+
+const (
+	GrantTypeAuthCode     = "authorization_code"
+	GrantTypeClientCreds  = "client_credentials"
+	GrantTypeUserCreds    = "password"
+	GrantTypeImplicit     = "implicit"
+	GrantTypeRefreshToken = "refresh_token"
+
+	AuthMethodClientSecretPost  = "client_secret_post"
+	AuthMethodClientSecretBasic = "client_secret_basic"
+	AuthMethodClientSecretJWT   = "client_secret_jwt"
+	AuthMethodPrivateKeyJWT     = "private_key_jwt"
+)
+
+type Config struct {
+	Credentials ClientCredentials
+	Scope       []string
+	RedirectURL string
+	AuthURL     string
+	TokenURL    string
+
+	// Must be one of the AuthMethodXXX methods above. Right now, only
+	// AuthMethodClientSecretPost and AuthMethodClientSecretBasic are supported.
+	AuthMethod string
+}
+
+type Client struct {
+	hc          phttp.Client
+	creds       ClientCredentials
+	scope       []string
+	authURL     *url.URL
+	redirectURL *url.URL
+	tokenURL    *url.URL
+	authMethod  string
+}
+
+type ClientCredentials struct {
+	ID     string
+	Secret string
+}
+
+func NewClient(hc phttp.Client, cfg Config) (c *Client, err error) {
+	if len(cfg.Credentials.ID) == 0 {
+		err = errors.New("missing client id")
+		return
+	}
+
+	if len(cfg.Credentials.Secret) == 0 {
+		err = errors.New("missing client secret")
+		return
+	}
+
+	if cfg.AuthMethod == "" {
+		cfg.AuthMethod = AuthMethodClientSecretBasic
+	} else if cfg.AuthMethod != AuthMethodClientSecretPost && cfg.AuthMethod != AuthMethodClientSecretBasic {
+		err = fmt.Errorf("auth method %q is not supported", cfg.AuthMethod)
+		return
+	}
+
+	au, err := phttp.ParseNonEmptyURL(cfg.AuthURL)
+	if err != nil {
+		return
+	}
+
+	tu, err := phttp.ParseNonEmptyURL(cfg.TokenURL)
+	if err != nil {
+		return
+	}
+
+	// Allow empty redirect URL in the case where the client
+	// only needs to verify a given token.
+	ru, err := url.Parse(cfg.RedirectURL)
+	if err != nil {
+		return
+	}
+
+	c = &Client{
+		creds:       cfg.Credentials,
+		scope:       cfg.Scope,
+		redirectURL: ru,
+		authURL:     au,
+		tokenURL:    tu,
+		hc:          hc,
+		authMethod:  cfg.AuthMethod,
+	}
+
+	return
+}
+
+// Return the embedded HTTP client
+func (c *Client) HttpClient() phttp.Client {
+	return c.hc
+}
+
+// Generate the url for initial redirect to oauth provider.
+func (c *Client) AuthCodeURL(state, accessType, prompt string) string {
+	v := c.commonURLValues()
+	v.Set("state", state)
+	if strings.ToLower(accessType) == "offline" {
+		v.Set("access_type", "offline")
+	}
+
+	if prompt != "" {
+		v.Set("prompt", prompt)
+	}
+	v.Set("response_type", "code")
+
+	q := v.Encode()
+	u := *c.authURL
+	if u.RawQuery == "" {
+		u.RawQuery = q
+	} else {
+		u.RawQuery += "&" + q
+	}
+	return u.String()
+}
+
+func (c *Client) commonURLValues() url.Values {
+	return url.Values{
+		"redirect_uri": {c.redirectURL.String()},
+		"scope":        {strings.Join(c.scope, " ")},
+		"client_id":    {c.creds.ID},
+	}
+}
+
+func (c *Client) newAuthenticatedRequest(urlToken string, values url.Values) (*http.Request, error) {
+	var req *http.Request
+	var err error
+	switch c.authMethod {
+	case AuthMethodClientSecretPost:
+		values.Set("client_secret", c.creds.Secret)
+		req, err = http.NewRequest("POST", urlToken, strings.NewReader(values.Encode()))
+		if err != nil {
+			return nil, err
+		}
+	case AuthMethodClientSecretBasic:
+		req, err = http.NewRequest("POST", urlToken, strings.NewReader(values.Encode()))
+		if err != nil {
+			return nil, err
+		}
+		encodedID := url.QueryEscape(c.creds.ID)
+		encodedSecret := url.QueryEscape(c.creds.Secret)
+		req.SetBasicAuth(encodedID, encodedSecret)
+	default:
+		panic("misconfigured client: auth method not supported")
+	}
+
+	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	return req, nil
+
+}
+
+// ClientCredsToken posts the client id and secret to obtain a token scoped to the OAuth2 client via the "client_credentials" grant type.
+// May not be supported by all OAuth2 servers.
+func (c *Client) ClientCredsToken(scope []string) (result TokenResponse, err error) {
+	v := url.Values{
+		"scope":      {strings.Join(scope, " ")},
+		"grant_type": {GrantTypeClientCreds},
+	}
+
+	req, err := c.newAuthenticatedRequest(c.tokenURL.String(), v)
+	if err != nil {
+		return
+	}
+
+	resp, err := c.hc.Do(req)
+	if err != nil {
+		return
+	}
+	defer resp.Body.Close()
+
+	return parseTokenResponse(resp)
+}
+
+// UserCredsToken posts the username and password to obtain a token scoped to the OAuth2 client via the "password" grant_type
+// May not be supported by all OAuth2 servers.
+func (c *Client) UserCredsToken(username, password string) (result TokenResponse, err error) {
+	v := url.Values{
+		"scope":      {strings.Join(c.scope, " ")},
+		"grant_type": {GrantTypeUserCreds},
+		"username":   {username},
+		"password":   {password},
+	}
+
+	req, err := c.newAuthenticatedRequest(c.tokenURL.String(), v)
+	if err != nil {
+		return
+	}
+
+	resp, err := c.hc.Do(req)
+	if err != nil {
+		return
+	}
+	defer resp.Body.Close()
+
+	return parseTokenResponse(resp)
+}
+
+// RequestToken requests a token from the Token Endpoint with the specified grantType.
+// If 'grantType' == GrantTypeAuthCode, then 'value' should be the authorization code.
+// If 'grantType' == GrantTypeRefreshToken, then 'value' should be the refresh token.
+func (c *Client) RequestToken(grantType, value string) (result TokenResponse, err error) {
+	v := c.commonURLValues()
+
+	v.Set("grant_type", grantType)
+	v.Set("client_secret", c.creds.Secret)
+	switch grantType {
+	case GrantTypeAuthCode:
+		v.Set("code", value)
+	case GrantTypeRefreshToken:
+		v.Set("refresh_token", value)
+	default:
+		err = fmt.Errorf("unsupported grant_type: %v", grantType)
+		return
+	}
+
+	req, err := c.newAuthenticatedRequest(c.tokenURL.String(), v)
+	if err != nil {
+		return
+	}
+
+	resp, err := c.hc.Do(req)
+	if err != nil {
+		return
+	}
+	defer resp.Body.Close()
+
+	return parseTokenResponse(resp)
+}
+
+func parseTokenResponse(resp *http.Response) (result TokenResponse, err error) {
+	body, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return
+	}
+	badStatusCode := resp.StatusCode < 200 || resp.StatusCode > 299
+
+	contentType, _, err := mime.ParseMediaType(resp.Header.Get("Content-Type"))
+	if err != nil {
+		return
+	}
+
+	result = TokenResponse{
+		RawBody: body,
+	}
+
+	newError := func(typ, desc, state string) error {
+		if typ == "" {
+			return fmt.Errorf("unrecognized error %s", body)
+		}
+		return &Error{typ, desc, state}
+	}
+
+	if contentType == "application/x-www-form-urlencoded" || contentType == "text/plain" {
+		var vals url.Values
+		vals, err = url.ParseQuery(string(body))
+		if err != nil {
+			return
+		}
+		if error := vals.Get("error"); error != "" || badStatusCode {
+			err = newError(error, vals.Get("error_description"), vals.Get("state"))
+			return
+		}
+		e := vals.Get("expires_in")
+		if e == "" {
+			e = vals.Get("expires")
+		}
+		if e != "" {
+			result.Expires, err = strconv.Atoi(e)
+			if err != nil {
+				return
+			}
+		}
+		result.AccessToken = vals.Get("access_token")
+		result.TokenType = vals.Get("token_type")
+		result.IDToken = vals.Get("id_token")
+		result.RefreshToken = vals.Get("refresh_token")
+		result.Scope = vals.Get("scope")
+	} else {
+		var r struct {
+			AccessToken  string      `json:"access_token"`
+			TokenType    string      `json:"token_type"`
+			IDToken      string      `json:"id_token"`
+			RefreshToken string      `json:"refresh_token"`
+			Scope        string      `json:"scope"`
+			State        string      `json:"state"`
+			ExpiresIn    json.Number `json:"expires_in"` // Azure AD returns string
+			Expires      int         `json:"expires"`
+			Error        string      `json:"error"`
+			Desc         string      `json:"error_description"`
+		}
+		if err = json.Unmarshal(body, &r); err != nil {
+			return
+		}
+		if r.Error != "" || badStatusCode {
+			err = newError(r.Error, r.Desc, r.State)
+			return
+		}
+		result.AccessToken = r.AccessToken
+		result.TokenType = r.TokenType
+		result.IDToken = r.IDToken
+		result.RefreshToken = r.RefreshToken
+		result.Scope = r.Scope
+		if expiresIn, err := r.ExpiresIn.Int64(); err != nil {
+			result.Expires = r.Expires
+		} else {
+			result.Expires = int(expiresIn)
+		}
+	}
+	return
+}
+
+type TokenResponse struct {
+	AccessToken  string
+	TokenType    string
+	Expires      int
+	IDToken      string
+	RefreshToken string // OPTIONAL.
+	Scope        string // OPTIONAL, if identical to the scope requested by the client, otherwise, REQUIRED.
+	RawBody      []byte // In case callers need some other non-standard info from the token response
+}
+
+type AuthCodeRequest struct {
+	ResponseType string
+	ClientID     string
+	RedirectURL  *url.URL
+	Scope        []string
+	State        string
+}
+
+func ParseAuthCodeRequest(q url.Values) (AuthCodeRequest, error) {
+	acr := AuthCodeRequest{
+		ResponseType: q.Get("response_type"),
+		ClientID:     q.Get("client_id"),
+		State:        q.Get("state"),
+		Scope:        make([]string, 0),
+	}
+
+	qs := strings.TrimSpace(q.Get("scope"))
+	if qs != "" {
+		acr.Scope = strings.Split(qs, " ")
+	}
+
+	err := func() error {
+		if acr.ClientID == "" {
+			return NewError(ErrorInvalidRequest)
+		}
+
+		redirectURL := q.Get("redirect_uri")
+		if redirectURL != "" {
+			ru, err := url.Parse(redirectURL)
+			if err != nil {
+				return NewError(ErrorInvalidRequest)
+			}
+			acr.RedirectURL = ru
+		}
+
+		return nil
+	}()
+
+	return acr, err
+}

vendor/github.com/coreos/go-oidc/oauth2/oauth2_test.go

@@ -0,0 +1,518 @@
+package oauth2
+
+import (
+	"errors"
+	"io/ioutil"
+	"net/http"
+	"net/url"
+	"reflect"
+	"strconv"
+	"strings"
+	"testing"
+
+	phttp "github.com/coreos/go-oidc/http"
+)
+
+func TestResponseTypesEqual(t *testing.T) {
+	tests := []struct {
+		r1, r2 string
+		want   bool
+	}{
+		{"code", "code", true},
+		{"id_token", "code", false},
+		{"code token", "token code", true},
+		{"code token", "code token", true},
+		{"foo", "bar code", false},
+		{"code token id_token", "token id_token code", true},
+		{"code token id_token", "token id_token code zoo", false},
+	}
+
+	for i, tt := range tests {
+		got1 := ResponseTypesEqual(tt.r1, tt.r2)
+		got2 := ResponseTypesEqual(tt.r2, tt.r1)
+		if got1 != got2 {
+			t.Errorf("case %d: got different answers with different orders", i)
+		}
+		if tt.want != got1 {
+			t.Errorf("case %d: want=%t, got=%t", i, tt.want, got1)
+		}
+	}
+}
+
+func TestParseAuthCodeRequest(t *testing.T) {
+	tests := []struct {
+		query   url.Values
+		wantACR AuthCodeRequest
+		wantErr error
+	}{
+		// no redirect_uri
+		{
+			query: url.Values{
+				"response_type": []string{"code"},
+				"scope":         []string{"foo bar baz"},
+				"client_id":     []string{"XXX"},
+				"state":         []string{"pants"},
+			},
+			wantACR: AuthCodeRequest{
+				ResponseType: "code",
+				ClientID:     "XXX",
+				Scope:        []string{"foo", "bar", "baz"},
+				State:        "pants",
+				RedirectURL:  nil,
+			},
+		},
+
+		// with redirect_uri
+		{
+			query: url.Values{
+				"response_type": []string{"code"},
+				"redirect_uri":  []string{"https://127.0.0.1:5555/callback?foo=bar"},
+				"scope":         []string{"foo bar baz"},
+				"client_id":     []string{"XXX"},
+				"state":         []string{"pants"},
+			},
+			wantACR: AuthCodeRequest{
+				ResponseType: "code",
+				ClientID:     "XXX",
+				Scope:        []string{"foo", "bar", "baz"},
+				State:        "pants",
+				RedirectURL: &url.URL{
+					Scheme:   "https",
+					Host:     "127.0.0.1:5555",
+					Path:     "/callback",
+					RawQuery: "foo=bar",
+				},
+			},
+		},
+
+		// unsupported response_type doesn't trigger error
+		{
+			query: url.Values{
+				"response_type": []string{"token"},
+				"redirect_uri":  []string{"https://127.0.0.1:5555/callback?foo=bar"},
+				"scope":         []string{"foo bar baz"},
+				"client_id":     []string{"XXX"},
+				"state":         []string{"pants"},
+			},
+			wantACR: AuthCodeRequest{
+				ResponseType: "token",
+				ClientID:     "XXX",
+				Scope:        []string{"foo", "bar", "baz"},
+				State:        "pants",
+				RedirectURL: &url.URL{
+					Scheme:   "https",
+					Host:     "127.0.0.1:5555",
+					Path:     "/callback",
+					RawQuery: "foo=bar",
+				},
+			},
+		},
+
+		// unparseable redirect_uri
+		{
+			query: url.Values{
+				"response_type": []string{"code"},
+				"redirect_uri":  []string{":"},
+				"scope":         []string{"foo bar baz"},
+				"client_id":     []string{"XXX"},
+				"state":         []string{"pants"},
+			},
+			wantACR: AuthCodeRequest{
+				ResponseType: "code",
+				ClientID:     "XXX",
+				Scope:        []string{"foo", "bar", "baz"},
+				State:        "pants",
+			},
+			wantErr: NewError(ErrorInvalidRequest),
+		},
+
+		// no client_id, redirect_uri not parsed
+		{
+			query: url.Values{
+				"response_type": []string{"code"},
+				"redirect_uri":  []string{"https://127.0.0.1:5555/callback?foo=bar"},
+				"scope":         []string{"foo bar baz"},
+				"client_id":     []string{},
+				"state":         []string{"pants"},
+			},
+			wantACR: AuthCodeRequest{
+				ResponseType: "code",
+				ClientID:     "",
+				Scope:        []string{"foo", "bar", "baz"},
+				State:        "pants",
+				RedirectURL:  nil,
+			},
+			wantErr: NewError(ErrorInvalidRequest),
+		},
+	}
+
+	for i, tt := range tests {
+		got, err := ParseAuthCodeRequest(tt.query)
+		if !reflect.DeepEqual(tt.wantErr, err) {
+			t.Errorf("case %d: incorrect error value: want=%q got=%q", i, tt.wantErr, err)
+		}
+
+		if !reflect.DeepEqual(tt.wantACR, got) {
+			t.Errorf("case %d: incorrect AuthCodeRequest value: want=%#v got=%#v", i, tt.wantACR, got)
+		}
+	}
+}
+
+type fakeBadClient struct {
+	Request *http.Request
+	err     error
+}
+
+func (f *fakeBadClient) Do(r *http.Request) (*http.Response, error) {
+	f.Request = r
+	return nil, f.err
+}
+
+func TestClientCredsToken(t *testing.T) {
+	hc := &fakeBadClient{nil, errors.New("error")}
+	cfg := Config{
+		Credentials: ClientCredentials{ID: "c#id", Secret: "c secret"},
+		Scope:       []string{"foo-scope", "bar-scope"},
+		TokenURL:    "http://example.com/token",
+		AuthMethod:  AuthMethodClientSecretBasic,
+		RedirectURL: "http://example.com/redirect",
+		AuthURL:     "http://example.com/auth",
+	}
+
+	c, err := NewClient(hc, cfg)
+	if err != nil {
+		t.Errorf("unexpected error %v", err)
+	}
+
+	scope := []string{"openid"}
+	c.ClientCredsToken(scope)
+	if hc.Request == nil {
+		t.Error("request is empty")
+	}
+
+	tu := hc.Request.URL.String()
+	if cfg.TokenURL != tu {
+		t.Errorf("wrong token url, want=%v, got=%v", cfg.TokenURL, tu)
+	}
+
+	ct := hc.Request.Header.Get("Content-Type")
+	if ct != "application/x-www-form-urlencoded" {
+		t.Errorf("wrong content-type, want=application/x-www-form-urlencoded, got=%v", ct)
+	}
+
+	cid, secret, ok := phttp.BasicAuth(hc.Request)
+	if !ok {
+		t.Error("unexpected error parsing basic auth")
+	}
+
+	if url.QueryEscape(cfg.Credentials.ID) != cid {
+		t.Errorf("wrong client ID, want=%v, got=%v", cfg.Credentials.ID, cid)
+	}
+
+	if url.QueryEscape(cfg.Credentials.Secret) != secret {
+		t.Errorf("wrong client secret, want=%v, got=%v", cfg.Credentials.Secret, secret)
+	}
+
+	err = hc.Request.ParseForm()
+	if err != nil {
+		t.Error("unexpected error parsing form")
+	}
+
+	gt := hc.Request.PostForm.Get("grant_type")
+	if gt != GrantTypeClientCreds {
+		t.Errorf("wrong grant_type, want=%v, got=%v", GrantTypeClientCreds, gt)
+	}
+
+	sc := strings.Split(hc.Request.PostForm.Get("scope"), " ")
+	if !reflect.DeepEqual(scope, sc) {
+		t.Errorf("wrong scope, want=%v, got=%v", scope, sc)
+	}
+}
+
+func TestUserCredsToken(t *testing.T) {
+	hc := &fakeBadClient{nil, errors.New("error")}
+	cfg := Config{
+		Credentials: ClientCredentials{ID: "c#id", Secret: "c secret"},
+		Scope:       []string{"foo-scope", "bar-scope"},
+		TokenURL:    "http://example.com/token",
+		AuthMethod:  AuthMethodClientSecretBasic,
+		RedirectURL: "http://example.com/redirect",
+		AuthURL:     "http://example.com/auth",
+	}
+
+	c, err := NewClient(hc, cfg)
+	if err != nil {
+		t.Errorf("unexpected error %v", err)
+	}
+
+	c.UserCredsToken("username", "password")
+	if hc.Request == nil {
+		t.Error("request is empty")
+	}
+
+	tu := hc.Request.URL.String()
+	if cfg.TokenURL != tu {
+		t.Errorf("wrong token url, want=%v, got=%v", cfg.TokenURL, tu)
+	}
+
+	ct := hc.Request.Header.Get("Content-Type")
+	if ct != "application/x-www-form-urlencoded" {
+		t.Errorf("wrong content-type, want=application/x-www-form-urlencoded, got=%v", ct)
+	}
+
+	cid, secret, ok := phttp.BasicAuth(hc.Request)
+	if !ok {
+		t.Error("unexpected error parsing basic auth")
+	}
+
+	if url.QueryEscape(cfg.Credentials.ID) != cid {
+		t.Errorf("wrong client ID, want=%v, got=%v", cfg.Credentials.ID, cid)
+	}
+
+	if url.QueryEscape(cfg.Credentials.Secret) != secret {
+		t.Errorf("wrong client secret, want=%v, got=%v", cfg.Credentials.Secret, secret)
+	}
+
+	err = hc.Request.ParseForm()
+	if err != nil {
+		t.Error("unexpected error parsing form")
+	}
+
+	gt := hc.Request.PostForm.Get("grant_type")
+	if gt != GrantTypeUserCreds {
+		t.Errorf("wrong grant_type, want=%v, got=%v", GrantTypeUserCreds, gt)
+	}
+
+	sc := strings.Split(hc.Request.PostForm.Get("scope"), " ")
+	if !reflect.DeepEqual(c.scope, sc) {
+		t.Errorf("wrong scope, want=%v, got=%v", c.scope, sc)
+	}
+}
+
+func TestNewAuthenticatedRequest(t *testing.T) {
+	tests := []struct {
+		authMethod string
+		url        string
+		values     url.Values
+	}{
+		{
+			authMethod: AuthMethodClientSecretBasic,
+			url:        "http://example.com/token",
+			values:     url.Values{},
+		},
+		{
+			authMethod: AuthMethodClientSecretPost,
+			url:        "http://example.com/token",
+			values:     url.Values{},
+		},
+	}
+
+	for i, tt := range tests {
+		cfg := Config{
+			Credentials: ClientCredentials{ID: "c#id", Secret: "c secret"},
+			Scope:       []string{"foo-scope", "bar-scope"},
+			TokenURL:    "http://example.com/token",
+			AuthURL:     "http://example.com/auth",
+			RedirectURL: "http://example.com/redirect",
+			AuthMethod:  tt.authMethod,
+		}
+		c, err := NewClient(nil, cfg)
+		req, err := c.newAuthenticatedRequest(tt.url, tt.values)
+		if err != nil {
+			t.Errorf("case %d: unexpected error: %v", i, err)
+			continue
+		}
+		err = req.ParseForm()
+		if err != nil {
+			t.Errorf("case %d: want nil err, got %v", i, err)
+		}
+
+		if tt.authMethod == AuthMethodClientSecretBasic {
+			cid, secret, ok := phttp.BasicAuth(req)
+			if !ok {
+				t.Errorf("case %d: !ok parsing Basic Auth headers", i)
+				continue
+			}
+			if cid != url.QueryEscape(cfg.Credentials.ID) {
+				t.Errorf("case %d: want CID == %q, got CID == %q", i, cfg.Credentials.ID, cid)
+			}
+			if secret != url.QueryEscape(cfg.Credentials.Secret) {
+				t.Errorf("case %d: want secret == %q, got secret == %q", i, cfg.Credentials.Secret, secret)
+			}
+		} else if tt.authMethod == AuthMethodClientSecretPost {
+			if req.PostFormValue("client_secret") != cfg.Credentials.Secret {
+				t.Errorf("case %d: want client_secret == %q, got client_secret == %q",
+					i, cfg.Credentials.Secret, req.PostFormValue("client_secret"))
+			}
+		}
+
+		for k, v := range tt.values {
+			if !reflect.DeepEqual(v, req.PostForm[k]) {
+				t.Errorf("case %d: key:%q want==%q, got==%q", i, k, v, req.PostForm[k])
+			}
+		}
+
+		if req.URL.String() != tt.url {
+			t.Errorf("case %d: want URL==%q, got URL==%q", i, tt.url, req.URL.String())
+		}
+
+	}
+}
+
+func TestParseTokenResponse(t *testing.T) {
+	type response struct {
+		body        string
+		contentType string
+		statusCode  int // defaults to http.StatusOK
+	}
+	tests := []struct {
+		resp      response
+		wantResp  TokenResponse
+		wantError *Error
+	}{
+		{
+			resp: response{
+				body:        "{ \"error\": \"invalid_client\", \"state\": \"foo\" }",
+				contentType: "application/json",
+				statusCode:  http.StatusBadRequest,
+			},
+			wantError: &Error{Type: "invalid_client", State: "foo"},
+		},
+		{
+			resp: response{
+				body:        "{ \"error\": \"invalid_request\", \"state\": \"bar\" }",
+				contentType: "application/json",
+				statusCode:  http.StatusBadRequest,
+			},
+			wantError: &Error{Type: "invalid_request", State: "bar"},
+		},
+		{
+			// Actual response from bitbucket
+			resp: response{
+				body:        `{"error_description": "Invalid OAuth client credentials", "error": "unauthorized_client"}`,
+				contentType: "application/json",
+				statusCode:  http.StatusBadRequest,
+			},
+			wantError: &Error{Type: "unauthorized_client", Description: "Invalid OAuth client credentials"},
+		},
+		{
+			// Actual response from github
+			resp: response{
+				body:        `error=incorrect_client_credentials&error_description=The+client_id+and%2For+client_secret+passed+are+incorrect.&error_uri=https%3A%2F%2Fdeveloper.github.com%2Fv3%2Foauth%2F%23incorrect-client-credentials`,
+				contentType: "application/x-www-form-urlencoded; charset=utf-8",
+			},
+			wantError: &Error{Type: "incorrect_client_credentials", Description: "The client_id and/or client_secret passed are incorrect."},
+		},
+		{
+			resp: response{
+				body:        `{"access_token":"e72e16c7e42f292c6912e7710c838347ae178b4a", "scope":"repo,gist", "token_type":"bearer"}`,
+				contentType: "application/json",
+			},
+			wantResp: TokenResponse{
+				AccessToken: "e72e16c7e42f292c6912e7710c838347ae178b4a",
+				TokenType:   "bearer",
+				Scope:       "repo,gist",
+			},
+		},
+		{
+			resp: response{
+				body:        `access_token=e72e16c7e42f292c6912e7710c838347ae178b4a&scope=user%2Cgist&token_type=bearer`,
+				contentType: "application/x-www-form-urlencoded",
+			},
+			wantResp: TokenResponse{
+				AccessToken: "e72e16c7e42f292c6912e7710c838347ae178b4a",
+				TokenType:   "bearer",
+				Scope:       "user,gist",
+			},
+		},
+		{
+			resp: response{
+				body:        `{"access_token":"foo","id_token":"bar","expires_in":200,"token_type":"bearer","refresh_token":"spam"}`,
+				contentType: "application/json; charset=utf-8",
+			},
+			wantResp: TokenResponse{
+				AccessToken:  "foo",
+				IDToken:      "bar",
+				Expires:      200,
+				TokenType:    "bearer",
+				RefreshToken: "spam",
+			},
+		},
+		{
+			// Azure AD returns "expires_in" value as string
+			resp: response{
+				body:        `{"access_token":"foo","id_token":"bar","expires_in":"300","token_type":"bearer","refresh_token":"spam"}`,
+				contentType: "application/json; charset=utf-8",
+			},
+			wantResp: TokenResponse{
+				AccessToken:  "foo",
+				IDToken:      "bar",
+				Expires:      300,
+				TokenType:    "bearer",
+				RefreshToken: "spam",
+			},
+		},
+		{
+			resp: response{
+				body:        `{"access_token":"foo","id_token":"bar","expires":200,"token_type":"bearer","refresh_token":"spam"}`,
+				contentType: "application/json; charset=utf-8",
+			},
+			wantResp: TokenResponse{
+				AccessToken:  "foo",
+				IDToken:      "bar",
+				Expires:      200,
+				TokenType:    "bearer",
+				RefreshToken: "spam",
+			},
+		},
+		{
+			resp: response{
+				body:        `access_token=foo&id_token=bar&expires_in=200&token_type=bearer&refresh_token=spam`,
+				contentType: "application/x-www-form-urlencoded",
+			},
+			wantResp: TokenResponse{
+				AccessToken:  "foo",
+				IDToken:      "bar",
+				Expires:      200,
+				TokenType:    "bearer",
+				RefreshToken: "spam",
+			},
+		},
+	}
+
+	for i, tt := range tests {
+		r := &http.Response{
+			StatusCode: http.StatusOK,
+			Header: http.Header{
+				"Content-Type":   []string{tt.resp.contentType},
+				"Content-Length": []string{strconv.Itoa(len([]byte(tt.resp.body)))},
+			},
+			Body:          ioutil.NopCloser(strings.NewReader(tt.resp.body)),
+			ContentLength: int64(len([]byte(tt.resp.body))),
+		}
+		if tt.resp.statusCode != 0 {
+			r.StatusCode = tt.resp.statusCode
+		}
+
+		result, err := parseTokenResponse(r)
+		if err != nil {
+			if tt.wantError == nil {
+				t.Errorf("case %d: got error==%v", i, err)
+				continue
+			}
+			if !reflect.DeepEqual(tt.wantError, err) {
+				t.Errorf("case %d: want=%+v, got=%+v", i, tt.wantError, err)
+			}
+		} else {
+			if tt.wantError != nil {
+				t.Errorf("case %d: want error==%v, got==nil", i, tt.wantError)
+				continue
+			}
+			// don't compare the raw body (it's really big and clogs error messages)
+			result.RawBody = tt.wantResp.RawBody
+			if !reflect.DeepEqual(tt.wantResp, result) {
+				t.Errorf("case %d: want=%+v, got=%+v", i, tt.wantResp, result)
+			}
+		}
+	}
+}

vendor/github.com/coreos/go-oidc/oidc.go

@@ -0,0 +1,319 @@
+// Package oidc implements OpenID Connect client logic for the golang.org/x/oauth2 package.
+package oidc
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"strings"
+	"time"
+
+	"golang.org/x/oauth2"
+	jose "gopkg.in/square/go-jose.v2"
+)
+
+const (
+	// ScopeOpenID is the mandatory scope for all OpenID Connect OAuth2 requests.
+	ScopeOpenID = "openid"
+
+	// ScopeOfflineAccess is an optional scope defined by OpenID Connect for requesting
+	// OAuth2 refresh tokens.
+	//
+	// Support for this scope differs between OpenID Connect providers. For instance
+	// Google rejects it, favoring appending "access_type=offline" as part of the
+	// authorization request instead.
+	//
+	// See: https://openid.net/specs/openid-connect-core-1_0.html#OfflineAccess
+	ScopeOfflineAccess = "offline_access"
+)
+
+// ClientContext returns a new Context that carries the provided HTTP client.
+//
+// This method sets the same context key used by the golang.org/x/oauth2 package,
+// so the returned context works for that package too.
+//
+//    myClient := &http.Client{}
+//    ctx := oidc.ClientContext(parentContext, myClient)
+//
+//    // This will use the custom client
+//    provider, err := oidc.NewProvider(ctx, "https://accounts.example.com")
+//
+func ClientContext(ctx context.Context, client *http.Client) context.Context {
+	return context.WithValue(ctx, oauth2.HTTPClient, client)
+}
+
+func doRequest(ctx context.Context, req *http.Request) (*http.Response, error) {
+	client := http.DefaultClient
+	if c, ok := ctx.Value(oauth2.HTTPClient).(*http.Client); ok {
+		client = c
+	}
+	return client.Do(req.WithContext(ctx))
+}
+
+// Provider represents an OpenID Connect server's configuration.
+type Provider struct {
+	issuer      string
+	authURL     string
+	tokenURL    string
+	userInfoURL string
+
+	// Raw claims returned by the server.
+	rawClaims []byte
+
+	remoteKeySet *remoteKeySet
+}
+
+type cachedKeys struct {
+	keys   []jose.JSONWebKey
+	expiry time.Time
+}
+
+type providerJSON struct {
+	Issuer      string `json:"issuer"`
+	AuthURL     string `json:"authorization_endpoint"`
+	TokenURL    string `json:"token_endpoint"`
+	JWKSURL     string `json:"jwks_uri"`
+	UserInfoURL string `json:"userinfo_endpoint"`
+}
+
+// NewProvider uses the OpenID Connect discovery mechanism to construct a Provider.
+//
+// The issuer is the URL identifier for the service. For example: "https://accounts.google.com"
+// or "https://login.salesforce.com".
+func NewProvider(ctx context.Context, issuer string) (*Provider, error) {
+	wellKnown := strings.TrimSuffix(issuer, "/") + "/.well-known/openid-configuration"
+	req, err := http.NewRequest("GET", wellKnown, nil)
+	if err != nil {
+		return nil, err
+	}
+	resp, err := doRequest(ctx, req)
+	if err != nil {
+		return nil, err
+	}
+	body, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return nil, err
+	}
+	if resp.StatusCode != http.StatusOK {
+		return nil, fmt.Errorf("%s: %s", resp.Status, body)
+	}
+	defer resp.Body.Close()
+	var p providerJSON
+	if err := json.Unmarshal(body, &p); err != nil {
+		return nil, fmt.Errorf("oidc: failed to decode provider discovery object: %v", err)
+	}
+	if p.Issuer != issuer {
+		return nil, fmt.Errorf("oidc: issuer did not match the issuer returned by provider, expected %q got %q", issuer, p.Issuer)
+	}
+	return &Provider{
+		issuer:       p.Issuer,
+		authURL:      p.AuthURL,
+		tokenURL:     p.TokenURL,
+		userInfoURL:  p.UserInfoURL,
+		rawClaims:    body,
+		remoteKeySet: newRemoteKeySet(ctx, p.JWKSURL, time.Now),
+	}, nil
+}
+
+// Claims unmarshals raw fields returned by the server during discovery.
+//
+//    var claims struct {
+//        ScopesSupported []string `json:"scopes_supported"`
+//        ClaimsSupported []string `json:"claims_supported"`
+//    }
+//
+//    if err := provider.Claims(&claims); err != nil {
+//        // handle unmarshaling error
+//    }
+//
+// For a list of fields defined by the OpenID Connect spec see:
+// https://openid.net/specs/openid-connect-discovery-1_0.html#ProviderMetadata
+func (p *Provider) Claims(v interface{}) error {
+	if p.rawClaims == nil {
+		return errors.New("oidc: claims not set")
+	}
+	return json.Unmarshal(p.rawClaims, v)
+}
+
+// Endpoint returns the OAuth2 auth and token endpoints for the given provider.
+func (p *Provider) Endpoint() oauth2.Endpoint {
+	return oauth2.Endpoint{AuthURL: p.authURL, TokenURL: p.tokenURL}
+}
+
+// UserInfo represents the OpenID Connect userinfo claims.
+type UserInfo struct {
+	Subject       string `json:"sub"`
+	Profile       string `json:"profile"`
+	Email         string `json:"email"`
+	EmailVerified bool   `json:"email_verified"`
+
+	claims []byte
+}
+
+// Claims unmarshals the raw JSON object claims into the provided object.
+func (u *UserInfo) Claims(v interface{}) error {
+	if u.claims == nil {
+		return errors.New("oidc: claims not set")
+	}
+	return json.Unmarshal(u.claims, v)
+}
+
+// UserInfo uses the token source to query the provider's user info endpoint.
+func (p *Provider) UserInfo(ctx context.Context, tokenSource oauth2.TokenSource) (*UserInfo, error) {
+	if p.userInfoURL == "" {
+		return nil, errors.New("oidc: user info endpoint is not supported by this provider")
+	}
+
+	req, err := http.NewRequest("GET", p.userInfoURL, nil)
+	if err != nil {
+		return nil, fmt.Errorf("oidc: create GET request: %v", err)
+	}
+
+	token, err := tokenSource.Token()
+	if err != nil {
+		return nil, fmt.Errorf("oidc: get access token: %v", err)
+	}
+	token.SetAuthHeader(req)
+
+	resp, err := doRequest(ctx, req)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+	body, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return nil, err
+	}
+	if resp.StatusCode != http.StatusOK {
+		return nil, fmt.Errorf("%s: %s", resp.Status, body)
+	}
+
+	var userInfo UserInfo
+	if err := json.Unmarshal(body, &userInfo); err != nil {
+		return nil, fmt.Errorf("oidc: failed to decode userinfo: %v", err)
+	}
+	userInfo.claims = body
+	return &userInfo, nil
+}
+
+// IDToken is an OpenID Connect extension that provides a predictable representation
+// of an authorization event.
+//
+// The ID Token only holds fields OpenID Connect requires. To access additional
+// claims returned by the server, use the Claims method.
+type IDToken struct {
+	// The URL of the server which issued this token. OpenID Connect
+	// requires this value always be identical to the URL used for
+	// initial discovery.
+	//
+	// Note: Because of a known issue with Google Accounts' implementation
+	// this value may differ when using Google.
+	//
+	// See: https://developers.google.com/identity/protocols/OpenIDConnect#obtainuserinfo
+	Issuer string
+
+	// The client ID, or set of client IDs, that this token is issued for. For
+	// common uses, this is the client that initialized the auth flow.
+	//
+	// This package ensures the audience contains an expected value.
+	Audience []string
+
+	// A unique string which identifies the end user.
+	Subject string
+
+	// Expiry of the token. Ths package will not process tokens that have
+	// expired unless that validation is explicitly turned off.
+	Expiry time.Time
+	// When the token was issued by the provider.
+	IssuedAt time.Time
+
+	// Initial nonce provided during the authentication redirect.
+	//
+	// If present, this package ensures this is a valid nonce.
+	Nonce string
+
+	// Raw payload of the id_token.
+	claims []byte
+}
+
+// Claims unmarshals the raw JSON payload of the ID Token into a provided struct.
+//
+//		idToken, err := idTokenVerifier.Verify(rawIDToken)
+//		if err != nil {
+//			// handle error
+//		}
+//		var claims struct {
+//			Email         string `json:"email"`
+//			EmailVerified bool   `json:"email_verified"`
+//		}
+//		if err := idToken.Claims(&claims); err != nil {
+//			// handle error
+//		}
+//
+func (i *IDToken) Claims(v interface{}) error {
+	if i.claims == nil {
+		return errors.New("oidc: claims not set")
+	}
+	return json.Unmarshal(i.claims, v)
+}
+
+type idToken struct {
+	Issuer   string   `json:"iss"`
+	Subject  string   `json:"sub"`
+	Audience audience `json:"aud"`
+	Expiry   jsonTime `json:"exp"`
+	IssuedAt jsonTime `json:"iat"`
+	Nonce    string   `json:"nonce"`
+}
+
+type audience []string
+
+func (a *audience) UnmarshalJSON(b []byte) error {
+	var s string
+	if json.Unmarshal(b, &s) == nil {
+		*a = audience{s}
+		return nil
+	}
+	var auds []string
+	if err := json.Unmarshal(b, &auds); err != nil {
+		return err
+	}
+	*a = audience(auds)
+	return nil
+}
+
+func (a audience) MarshalJSON() ([]byte, error) {
+	if len(a) == 1 {
+		return json.Marshal(a[0])
+	}
+	return json.Marshal([]string(a))
+}
+
+type jsonTime time.Time
+
+func (j *jsonTime) UnmarshalJSON(b []byte) error {
+	var n json.Number
+	if err := json.Unmarshal(b, &n); err != nil {
+		return err
+	}
+	var unix int64
+
+	if t, err := n.Int64(); err == nil {
+		unix = t
+	} else {
+		f, err := n.Float64()
+		if err != nil {
+			return err
+		}
+		unix = int64(f)
+	}
+	*j = jsonTime(time.Unix(unix, 0))
+	return nil
+}
+
+func (j jsonTime) MarshalJSON() ([]byte, error) {
+	return json.Marshal(time.Time(j).Unix())
+}

vendor/github.com/coreos/go-oidc/oidc/client.go

@@ -0,0 +1,846 @@
+package oidc
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net/http"
+	"net/mail"
+	"net/url"
+	"sync"
+	"time"
+
+	phttp "github.com/coreos/go-oidc/http"
+	"github.com/coreos/go-oidc/jose"
+	"github.com/coreos/go-oidc/key"
+	"github.com/coreos/go-oidc/oauth2"
+)
+
+const (
+	// amount of time that must pass after the last key sync
+	// completes before another attempt may begin
+	keySyncWindow = 5 * time.Second
+)
+
+var (
+	DefaultScope = []string{"openid", "email", "profile"}
+
+	supportedAuthMethods = map[string]struct{}{
+		oauth2.AuthMethodClientSecretBasic: struct{}{},
+		oauth2.AuthMethodClientSecretPost:  struct{}{},
+	}
+)
+
+type ClientCredentials oauth2.ClientCredentials
+
+type ClientIdentity struct {
+	Credentials ClientCredentials
+	Metadata    ClientMetadata
+}
+
+type JWAOptions struct {
+	// SigningAlg specifies an JWA alg for signing JWTs.
+	//
+	// Specifying this field implies different actions depending on the context. It may
+	// require objects be serialized and signed as a JWT instead of plain JSON, or
+	// require an existing JWT object use the specified alg.
+	//
+	// See: http://openid.net/specs/openid-connect-registration-1_0.html#ClientMetadata
+	SigningAlg string
+	// EncryptionAlg, if provided, specifies that the returned or sent object be stored
+	// (or nested) within a JWT object and encrypted with the provided JWA alg.
+	EncryptionAlg string
+	// EncryptionEnc specifies the JWA enc algorithm to use with EncryptionAlg. If
+	// EncryptionAlg is provided and EncryptionEnc is omitted, this field defaults
+	// to A128CBC-HS256.
+	//
+	// If EncryptionEnc is provided EncryptionAlg must also be specified.
+	EncryptionEnc string
+}
+
+func (opt JWAOptions) valid() error {
+	if opt.EncryptionEnc != "" && opt.EncryptionAlg == "" {
+		return errors.New("encryption encoding provided with no encryption algorithm")
+	}
+	return nil
+}
+
+func (opt JWAOptions) defaults() JWAOptions {
+	if opt.EncryptionAlg != "" && opt.EncryptionEnc == "" {
+		opt.EncryptionEnc = jose.EncA128CBCHS256
+	}
+	return opt
+}
+
+var (
+	// Ensure ClientMetadata satisfies these interfaces.
+	_ json.Marshaler   = &ClientMetadata{}
+	_ json.Unmarshaler = &ClientMetadata{}
+)
+
+// ClientMetadata holds metadata that the authorization server associates
+// with a client identifier. The fields range from human-facing display
+// strings such as client name, to items that impact the security of the
+// protocol, such as the list of valid redirect URIs.
+//
+// See http://openid.net/specs/openid-connect-registration-1_0.html#ClientMetadata
+//
+// TODO: support language specific claim representations
+// http://openid.net/specs/openid-connect-registration-1_0.html#LanguagesAndScripts
+type ClientMetadata struct {
+	RedirectURIs []url.URL // Required
+
+	// A list of OAuth 2.0 "response_type" values that the client wishes to restrict
+	// itself to. Either "code", "token", or another registered extension.
+	//
+	// If omitted, only "code" will be used.
+	ResponseTypes []string
+	// A list of OAuth 2.0 grant types the client wishes to restrict itself to.
+	// The grant type values used by OIDC are "authorization_code", "implicit",
+	// and "refresh_token".
+	//
+	// If ommitted, only "authorization_code" will be used.
+	GrantTypes []string
+	// "native" or "web". If omitted, "web".
+	ApplicationType string
+
+	// List of email addresses.
+	Contacts []mail.Address
+	// Name of client to be presented to the end-user.
+	ClientName string
+	// URL that references a logo for the Client application.
+	LogoURI *url.URL
+	// URL of the home page of the Client.
+	ClientURI *url.URL
+	// Profile data policies and terms of use to be provided to the end user.
+	PolicyURI         *url.URL
+	TermsOfServiceURI *url.URL
+
+	// URL to or the value of the client's JSON Web Key Set document.
+	JWKSURI *url.URL
+	JWKS    *jose.JWKSet
+
+	// URL referencing a flie with a single JSON array of redirect URIs.
+	SectorIdentifierURI *url.URL
+
+	SubjectType string
+
+	// Options to restrict the JWS alg and enc values used for server responses and requests.
+	IDTokenResponseOptions  JWAOptions
+	UserInfoResponseOptions JWAOptions
+	RequestObjectOptions    JWAOptions
+
+	// Client requested authorization method and signing options for the token endpoint.
+	//
+	// Defaults to "client_secret_basic"
+	TokenEndpointAuthMethod     string
+	TokenEndpointAuthSigningAlg string
+
+	// DefaultMaxAge specifies the maximum amount of time in seconds before an authorized
+	// user must reauthroize.
+	//
+	// If 0, no limitation is placed on the maximum.
+	DefaultMaxAge int64
+	// RequireAuthTime specifies if the auth_time claim in the ID token is required.
+	RequireAuthTime bool
+
+	// Default Authentication Context Class Reference values for authentication requests.
+	DefaultACRValues []string
+
+	// URI that a third party can use to initiate a login by the relaying party.
+	//
+	// See: http://openid.net/specs/openid-connect-core-1_0.html#ThirdPartyInitiatedLogin
+	InitiateLoginURI *url.URL
+	// Pre-registered request_uri values that may be cached by the server.
+	RequestURIs []url.URL
+}
+
+// Defaults returns a shallow copy of ClientMetadata with default
+// values replacing omitted fields.
+func (m ClientMetadata) Defaults() ClientMetadata {
+	if len(m.ResponseTypes) == 0 {
+		m.ResponseTypes = []string{oauth2.ResponseTypeCode}
+	}
+	if len(m.GrantTypes) == 0 {
+		m.GrantTypes = []string{oauth2.GrantTypeAuthCode}
+	}
+	if m.ApplicationType == "" {
+		m.ApplicationType = "web"
+	}
+	if m.TokenEndpointAuthMethod == "" {
+		m.TokenEndpointAuthMethod = oauth2.AuthMethodClientSecretBasic
+	}
+	m.IDTokenResponseOptions = m.IDTokenResponseOptions.defaults()
+	m.UserInfoResponseOptions = m.UserInfoResponseOptions.defaults()
+	m.RequestObjectOptions = m.RequestObjectOptions.defaults()
+	return m
+}
+
+func (m *ClientMetadata) MarshalJSON() ([]byte, error) {
+	e := m.toEncodableStruct()
+	return json.Marshal(&e)
+}
+
+func (m *ClientMetadata) UnmarshalJSON(data []byte) error {
+	var e encodableClientMetadata
+	if err := json.Unmarshal(data, &e); err != nil {
+		return err
+	}
+	meta, err := e.toStruct()
+	if err != nil {
+		return err
+	}
+	if err := meta.Valid(); err != nil {
+		return err
+	}
+	*m = meta
+	return nil
+}
+
+type encodableClientMetadata struct {
+	RedirectURIs                 []string     `json:"redirect_uris"` // Required
+	ResponseTypes                []string     `json:"response_types,omitempty"`
+	GrantTypes                   []string     `json:"grant_types,omitempty"`
+	ApplicationType              string       `json:"application_type,omitempty"`
+	Contacts                     []string     `json:"contacts,omitempty"`
+	ClientName                   string       `json:"client_name,omitempty"`
+	LogoURI                      string       `json:"logo_uri,omitempty"`
+	ClientURI                    string       `json:"client_uri,omitempty"`
+	PolicyURI                    string       `json:"policy_uri,omitempty"`
+	TermsOfServiceURI            string       `json:"tos_uri,omitempty"`
+	JWKSURI                      string       `json:"jwks_uri,omitempty"`
+	JWKS                         *jose.JWKSet `json:"jwks,omitempty"`
+	SectorIdentifierURI          string       `json:"sector_identifier_uri,omitempty"`
+	SubjectType                  string       `json:"subject_type,omitempty"`
+	IDTokenSignedResponseAlg     string       `json:"id_token_signed_response_alg,omitempty"`
+	IDTokenEncryptedResponseAlg  string       `json:"id_token_encrypted_response_alg,omitempty"`
+	IDTokenEncryptedResponseEnc  string       `json:"id_token_encrypted_response_enc,omitempty"`
+	UserInfoSignedResponseAlg    string       `json:"userinfo_signed_response_alg,omitempty"`
+	UserInfoEncryptedResponseAlg string       `json:"userinfo_encrypted_response_alg,omitempty"`
+	UserInfoEncryptedResponseEnc string       `json:"userinfo_encrypted_response_enc,omitempty"`
+	RequestObjectSigningAlg      string       `json:"request_object_signing_alg,omitempty"`
+	RequestObjectEncryptionAlg   string       `json:"request_object_encryption_alg,omitempty"`
+	RequestObjectEncryptionEnc   string       `json:"request_object_encryption_enc,omitempty"`
+	TokenEndpointAuthMethod      string       `json:"token_endpoint_auth_method,omitempty"`
+	TokenEndpointAuthSigningAlg  string       `json:"token_endpoint_auth_signing_alg,omitempty"`
+	DefaultMaxAge                int64        `json:"default_max_age,omitempty"`
+	RequireAuthTime              bool         `json:"require_auth_time,omitempty"`
+	DefaultACRValues             []string     `json:"default_acr_values,omitempty"`
+	InitiateLoginURI             string       `json:"initiate_login_uri,omitempty"`
+	RequestURIs                  []string     `json:"request_uris,omitempty"`
+}
+
+func (c *encodableClientMetadata) toStruct() (ClientMetadata, error) {
+	p := stickyErrParser{}
+	m := ClientMetadata{
+		RedirectURIs:                p.parseURIs(c.RedirectURIs, "redirect_uris"),
+		ResponseTypes:               c.ResponseTypes,
+		GrantTypes:                  c.GrantTypes,
+		ApplicationType:             c.ApplicationType,
+		Contacts:                    p.parseEmails(c.Contacts, "contacts"),
+		ClientName:                  c.ClientName,
+		LogoURI:                     p.parseURI(c.LogoURI, "logo_uri"),
+		ClientURI:                   p.parseURI(c.ClientURI, "client_uri"),
+		PolicyURI:                   p.parseURI(c.PolicyURI, "policy_uri"),
+		TermsOfServiceURI:           p.parseURI(c.TermsOfServiceURI, "tos_uri"),
+		JWKSURI:                     p.parseURI(c.JWKSURI, "jwks_uri"),
+		JWKS:                        c.JWKS,
+		SectorIdentifierURI:         p.parseURI(c.SectorIdentifierURI, "sector_identifier_uri"),
+		SubjectType:                 c.SubjectType,
+		TokenEndpointAuthMethod:     c.TokenEndpointAuthMethod,
+		TokenEndpointAuthSigningAlg: c.TokenEndpointAuthSigningAlg,
+		DefaultMaxAge:               c.DefaultMaxAge,
+		RequireAuthTime:             c.RequireAuthTime,
+		DefaultACRValues:            c.DefaultACRValues,
+		InitiateLoginURI:            p.parseURI(c.InitiateLoginURI, "initiate_login_uri"),
+		RequestURIs:                 p.parseURIs(c.RequestURIs, "request_uris"),
+		IDTokenResponseOptions: JWAOptions{
+			c.IDTokenSignedResponseAlg,
+			c.IDTokenEncryptedResponseAlg,
+			c.IDTokenEncryptedResponseEnc,
+		},
+		UserInfoResponseOptions: JWAOptions{
+			c.UserInfoSignedResponseAlg,
+			c.UserInfoEncryptedResponseAlg,
+			c.UserInfoEncryptedResponseEnc,
+		},
+		RequestObjectOptions: JWAOptions{
+			c.RequestObjectSigningAlg,
+			c.RequestObjectEncryptionAlg,
+			c.RequestObjectEncryptionEnc,
+		},
+	}
+	if p.firstErr != nil {
+		return ClientMetadata{}, p.firstErr
+	}
+	return m, nil
+}
+
+// stickyErrParser parses URIs and email addresses. Once it encounters
+// a parse error, subsequent calls become no-op.
+type stickyErrParser struct {
+	firstErr error
+}
+
+func (p *stickyErrParser) parseURI(s, field string) *url.URL {
+	if p.firstErr != nil || s == "" {
+		return nil
+	}
+	u, err := url.Parse(s)
+	if err == nil {
+		if u.Host == "" {
+			err = errors.New("no host in URI")
+		} else if u.Scheme != "http" && u.Scheme != "https" {
+			err = errors.New("invalid URI scheme")
+		}
+	}
+	if err != nil {
+		p.firstErr = fmt.Errorf("failed to parse %s: %v", field, err)
+		return nil
+	}
+	return u
+}
+
+func (p *stickyErrParser) parseURIs(s []string, field string) []url.URL {
+	if p.firstErr != nil || len(s) == 0 {
+		return nil
+	}
+	uris := make([]url.URL, len(s))
+	for i, val := range s {
+		if val == "" {
+			p.firstErr = fmt.Errorf("invalid URI in field %s", field)
+			return nil
+		}
+		if u := p.parseURI(val, field); u != nil {
+			uris[i] = *u
+		}
+	}
+	return uris
+}
+
+func (p *stickyErrParser) parseEmails(s []string, field string) []mail.Address {
+	if p.firstErr != nil || len(s) == 0 {
+		return nil
+	}
+	addrs := make([]mail.Address, len(s))
+	for i, addr := range s {
+		if addr == "" {
+			p.firstErr = fmt.Errorf("invalid email in field %s", field)
+			return nil
+		}
+		a, err := mail.ParseAddress(addr)
+		if err != nil {
+			p.firstErr = fmt.Errorf("invalid email in field %s: %v", field, err)
+			return nil
+		}
+		addrs[i] = *a
+	}
+	return addrs
+}
+
+func (m *ClientMetadata) toEncodableStruct() encodableClientMetadata {
+	return encodableClientMetadata{
+		RedirectURIs:                 urisToStrings(m.RedirectURIs),
+		ResponseTypes:                m.ResponseTypes,
+		GrantTypes:                   m.GrantTypes,
+		ApplicationType:              m.ApplicationType,
+		Contacts:                     emailsToStrings(m.Contacts),
+		ClientName:                   m.ClientName,
+		LogoURI:                      uriToString(m.LogoURI),
+		ClientURI:                    uriToString(m.ClientURI),
+		PolicyURI:                    uriToString(m.PolicyURI),
+		TermsOfServiceURI:            uriToString(m.TermsOfServiceURI),
+		JWKSURI:                      uriToString(m.JWKSURI),
+		JWKS:                         m.JWKS,
+		SectorIdentifierURI:          uriToString(m.SectorIdentifierURI),
+		SubjectType:                  m.SubjectType,
+		IDTokenSignedResponseAlg:     m.IDTokenResponseOptions.SigningAlg,
+		IDTokenEncryptedResponseAlg:  m.IDTokenResponseOptions.EncryptionAlg,
+		IDTokenEncryptedResponseEnc:  m.IDTokenResponseOptions.EncryptionEnc,
+		UserInfoSignedResponseAlg:    m.UserInfoResponseOptions.SigningAlg,
+		UserInfoEncryptedResponseAlg: m.UserInfoResponseOptions.EncryptionAlg,
+		UserInfoEncryptedResponseEnc: m.UserInfoResponseOptions.EncryptionEnc,
+		RequestObjectSigningAlg:      m.RequestObjectOptions.SigningAlg,
+		RequestObjectEncryptionAlg:   m.RequestObjectOptions.EncryptionAlg,
+		RequestObjectEncryptionEnc:   m.RequestObjectOptions.EncryptionEnc,
+		TokenEndpointAuthMethod:      m.TokenEndpointAuthMethod,
+		TokenEndpointAuthSigningAlg:  m.TokenEndpointAuthSigningAlg,
+		DefaultMaxAge:                m.DefaultMaxAge,
+		RequireAuthTime:              m.RequireAuthTime,
+		DefaultACRValues:             m.DefaultACRValues,
+		InitiateLoginURI:             uriToString(m.InitiateLoginURI),
+		RequestURIs:                  urisToStrings(m.RequestURIs),
+	}
+}
+
+func uriToString(u *url.URL) string {
+	if u == nil {
+		return ""
+	}
+	return u.String()
+}
+
+func urisToStrings(urls []url.URL) []string {
+	if len(urls) == 0 {
+		return nil
+	}
+	sli := make([]string, len(urls))
+	for i, u := range urls {
+		sli[i] = u.String()
+	}
+	return sli
+}
+
+func emailsToStrings(addrs []mail.Address) []string {
+	if len(addrs) == 0 {
+		return nil
+	}
+	sli := make([]string, len(addrs))
+	for i, addr := range addrs {
+		sli[i] = addr.String()
+	}
+	return sli
+}
+
+// Valid determines if a ClientMetadata conforms with the OIDC specification.
+//
+// Valid is called by UnmarshalJSON.
+//
+// NOTE(ericchiang): For development purposes Valid does not mandate 'https' for
+// URLs fields where the OIDC spec requires it. This may change in future releases
+// of this package. See: https://github.com/coreos/go-oidc/issues/34
+func (m *ClientMetadata) Valid() error {
+	if len(m.RedirectURIs) == 0 {
+		return errors.New("zero redirect URLs")
+	}
+
+	validURI := func(u *url.URL, fieldName string) error {
+		if u.Host == "" {
+			return fmt.Errorf("no host for uri field %s", fieldName)
+		}
+		if u.Scheme != "http" && u.Scheme != "https" {
+			return fmt.Errorf("uri field %s scheme is not http or https", fieldName)
+		}
+		return nil
+	}
+
+	uris := []struct {
+		val  *url.URL
+		name string
+	}{
+		{m.LogoURI, "logo_uri"},
+		{m.ClientURI, "client_uri"},
+		{m.PolicyURI, "policy_uri"},
+		{m.TermsOfServiceURI, "tos_uri"},
+		{m.JWKSURI, "jwks_uri"},
+		{m.SectorIdentifierURI, "sector_identifier_uri"},
+		{m.InitiateLoginURI, "initiate_login_uri"},
+	}
+
+	for _, uri := range uris {
+		if uri.val == nil {
+			continue
+		}
+		if err := validURI(uri.val, uri.name); err != nil {
+			return err
+		}
+	}
+
+	uriLists := []struct {
+		vals []url.URL
+		name string
+	}{
+		{m.RedirectURIs, "redirect_uris"},
+		{m.RequestURIs, "request_uris"},
+	}
+	for _, list := range uriLists {
+		for _, uri := range list.vals {
+			if err := validURI(&uri, list.name); err != nil {
+				return err
+			}
+		}
+	}
+
+	options := []struct {
+		option JWAOptions
+		name   string
+	}{
+		{m.IDTokenResponseOptions, "id_token response"},
+		{m.UserInfoResponseOptions, "userinfo response"},
+		{m.RequestObjectOptions, "request_object"},
+	}
+	for _, option := range options {
+		if err := option.option.valid(); err != nil {
+			return fmt.Errorf("invalid JWA values for %s: %v", option.name, err)
+		}
+	}
+	return nil
+}
+
+type ClientRegistrationResponse struct {
+	ClientID                string // Required
+	ClientSecret            string
+	RegistrationAccessToken string
+	RegistrationClientURI   string
+	// If IsZero is true, unspecified.
+	ClientIDIssuedAt time.Time
+	// Time at which the client_secret will expire.
+	// If IsZero is true, it will not expire.
+	ClientSecretExpiresAt time.Time
+
+	ClientMetadata
+}
+
+type encodableClientRegistrationResponse struct {
+	ClientID                string `json:"client_id"` // Required
+	ClientSecret            string `json:"client_secret,omitempty"`
+	RegistrationAccessToken string `json:"registration_access_token,omitempty"`
+	RegistrationClientURI   string `json:"registration_client_uri,omitempty"`
+	ClientIDIssuedAt        int64  `json:"client_id_issued_at,omitempty"`
+	// Time at which the client_secret will expire, in seconds since the epoch.
+	// If 0 it will not expire.
+	ClientSecretExpiresAt int64 `json:"client_secret_expires_at"` // Required
+
+	encodableClientMetadata
+}
+
+func unixToSec(t time.Time) int64 {
+	if t.IsZero() {
+		return 0
+	}
+	return t.Unix()
+}
+
+func (c *ClientRegistrationResponse) MarshalJSON() ([]byte, error) {
+	e := encodableClientRegistrationResponse{
+		ClientID:                c.ClientID,
+		ClientSecret:            c.ClientSecret,
+		RegistrationAccessToken: c.RegistrationAccessToken,
+		RegistrationClientURI:   c.RegistrationClientURI,
+		ClientIDIssuedAt:        unixToSec(c.ClientIDIssuedAt),
+		ClientSecretExpiresAt:   unixToSec(c.ClientSecretExpiresAt),
+		encodableClientMetadata: c.ClientMetadata.toEncodableStruct(),
+	}
+	return json.Marshal(&e)
+}
+
+func secToUnix(sec int64) time.Time {
+	if sec == 0 {
+		return time.Time{}
+	}
+	return time.Unix(sec, 0)
+}
+
+func (c *ClientRegistrationResponse) UnmarshalJSON(data []byte) error {
+	var e encodableClientRegistrationResponse
+	if err := json.Unmarshal(data, &e); err != nil {
+		return err
+	}
+	if e.ClientID == "" {
+		return errors.New("no client_id in client registration response")
+	}
+	metadata, err := e.encodableClientMetadata.toStruct()
+	if err != nil {
+		return err
+	}
+	*c = ClientRegistrationResponse{
+		ClientID:                e.ClientID,
+		ClientSecret:            e.ClientSecret,
+		RegistrationAccessToken: e.RegistrationAccessToken,
+		RegistrationClientURI:   e.RegistrationClientURI,
+		ClientIDIssuedAt:        secToUnix(e.ClientIDIssuedAt),
+		ClientSecretExpiresAt:   secToUnix(e.ClientSecretExpiresAt),
+		ClientMetadata:          metadata,
+	}
+	return nil
+}
+
+type ClientConfig struct {
+	HTTPClient     phttp.Client
+	Credentials    ClientCredentials
+	Scope          []string
+	RedirectURL    string
+	ProviderConfig ProviderConfig
+	KeySet         key.PublicKeySet
+}
+
+func NewClient(cfg ClientConfig) (*Client, error) {
+	// Allow empty redirect URL in the case where the client
+	// only needs to verify a given token.
+	ru, err := url.Parse(cfg.RedirectURL)
+	if err != nil {
+		return nil, fmt.Errorf("invalid redirect URL: %v", err)
+	}
+
+	c := Client{
+		credentials:    cfg.Credentials,
+		httpClient:     cfg.HTTPClient,
+		scope:          cfg.Scope,
+		redirectURL:    ru.String(),
+		providerConfig: newProviderConfigRepo(cfg.ProviderConfig),
+		keySet:         cfg.KeySet,
+	}
+
+	if c.httpClient == nil {
+		c.httpClient = http.DefaultClient
+	}
+
+	if c.scope == nil {
+		c.scope = make([]string, len(DefaultScope))
+		copy(c.scope, DefaultScope)
+	}
+
+	return &c, nil
+}
+
+type Client struct {
+	httpClient     phttp.Client
+	providerConfig *providerConfigRepo
+	credentials    ClientCredentials
+	redirectURL    string
+	scope          []string
+	keySet         key.PublicKeySet
+	providerSyncer *ProviderConfigSyncer
+
+	keySetSyncMutex sync.RWMutex
+	lastKeySetSync  time.Time
+}
+
+func (c *Client) Healthy() error {
+	now := time.Now().UTC()
+
+	cfg := c.providerConfig.Get()
+
+	if cfg.Empty() {
+		return errors.New("oidc client provider config empty")
+	}
+
+	if !cfg.ExpiresAt.IsZero() && cfg.ExpiresAt.Before(now) {
+		return errors.New("oidc client provider config expired")
+	}
+
+	return nil
+}
+
+func (c *Client) OAuthClient() (*oauth2.Client, error) {
+	cfg := c.providerConfig.Get()
+	authMethod, err := chooseAuthMethod(cfg)
+	if err != nil {
+		return nil, err
+	}
+
+	ocfg := oauth2.Config{
+		Credentials: oauth2.ClientCredentials(c.credentials),
+		RedirectURL: c.redirectURL,
+		AuthURL:     cfg.AuthEndpoint.String(),
+		TokenURL:    cfg.TokenEndpoint.String(),
+		Scope:       c.scope,
+		AuthMethod:  authMethod,
+	}
+
+	return oauth2.NewClient(c.httpClient, ocfg)
+}
+
+func chooseAuthMethod(cfg ProviderConfig) (string, error) {
+	if len(cfg.TokenEndpointAuthMethodsSupported) == 0 {
+		return oauth2.AuthMethodClientSecretBasic, nil
+	}
+
+	for _, authMethod := range cfg.TokenEndpointAuthMethodsSupported {
+		if _, ok := supportedAuthMethods[authMethod]; ok {
+			return authMethod, nil
+		}
+	}
+
+	return "", errors.New("no supported auth methods")
+}
+
+// SyncProviderConfig starts the provider config syncer
+func (c *Client) SyncProviderConfig(discoveryURL string) chan struct{} {
+	r := NewHTTPProviderConfigGetter(c.httpClient, discoveryURL)
+	s := NewProviderConfigSyncer(r, c.providerConfig)
+	stop := s.Run()
+	s.WaitUntilInitialSync()
+	return stop
+}
+
+func (c *Client) maybeSyncKeys() error {
+	tooSoon := func() bool {
+		return time.Now().UTC().Before(c.lastKeySetSync.Add(keySyncWindow))
+	}
+
+	// ignore request to sync keys if a sync operation has been
+	// attempted too recently
+	if tooSoon() {
+		return nil
+	}
+
+	c.keySetSyncMutex.Lock()
+	defer c.keySetSyncMutex.Unlock()
+
+	// check again, as another goroutine may have been holding
+	// the lock while updating the keys
+	if tooSoon() {
+		return nil
+	}
+
+	cfg := c.providerConfig.Get()
+	r := NewRemotePublicKeyRepo(c.httpClient, cfg.KeysEndpoint.String())
+	w := &clientKeyRepo{client: c}
+	_, err := key.Sync(r, w)
+	c.lastKeySetSync = time.Now().UTC()
+
+	return err
+}
+
+type clientKeyRepo struct {
+	client *Client
+}
+
+func (r *clientKeyRepo) Set(ks key.KeySet) error {
+	pks, ok := ks.(*key.PublicKeySet)
+	if !ok {
+		return errors.New("unable to cast to PublicKey")
+	}
+	r.client.keySet = *pks
+	return nil
+}
+
+func (c *Client) ClientCredsToken(scope []string) (jose.JWT, error) {
+	cfg := c.providerConfig.Get()
+
+	if !cfg.SupportsGrantType(oauth2.GrantTypeClientCreds) {
+		return jose.JWT{}, fmt.Errorf("%v grant type is not supported", oauth2.GrantTypeClientCreds)
+	}
+
+	oac, err := c.OAuthClient()
+	if err != nil {
+		return jose.JWT{}, err
+	}
+
+	t, err := oac.ClientCredsToken(scope)
+	if err != nil {
+		return jose.JWT{}, err
+	}
+
+	jwt, err := jose.ParseJWT(t.IDToken)
+	if err != nil {
+		return jose.JWT{}, err
+	}
+
+	return jwt, c.VerifyJWT(jwt)
+}
+
+// ExchangeAuthCode exchanges an OAuth2 auth code for an OIDC JWT ID token.
+func (c *Client) ExchangeAuthCode(code string) (jose.JWT, error) {
+	oac, err := c.OAuthClient()
+	if err != nil {
+		return jose.JWT{}, err
+	}
+
+	t, err := oac.RequestToken(oauth2.GrantTypeAuthCode, code)
+	if err != nil {
+		return jose.JWT{}, err
+	}
+
+	jwt, err := jose.ParseJWT(t.IDToken)
+	if err != nil {
+		return jose.JWT{}, err
+	}
+
+	return jwt, c.VerifyJWT(jwt)
+}
+
+// RefreshToken uses a refresh token to exchange for a new OIDC JWT ID Token.
+func (c *Client) RefreshToken(refreshToken string) (jose.JWT, error) {
+	oac, err := c.OAuthClient()
+	if err != nil {
+		return jose.JWT{}, err
+	}
+
+	t, err := oac.RequestToken(oauth2.GrantTypeRefreshToken, refreshToken)
+	if err != nil {
+		return jose.JWT{}, err
+	}
+
+	jwt, err := jose.ParseJWT(t.IDToken)
+	if err != nil {
+		return jose.JWT{}, err
+	}
+
+	return jwt, c.VerifyJWT(jwt)
+}
+
+func (c *Client) VerifyJWT(jwt jose.JWT) error {
+	var keysFunc func() []key.PublicKey
+	if kID, ok := jwt.KeyID(); ok {
+		keysFunc = c.keysFuncWithID(kID)
+	} else {
+		keysFunc = c.keysFuncAll()
+	}
+
+	v := NewJWTVerifier(
+		c.providerConfig.Get().Issuer.String(),
+		c.credentials.ID,
+		c.maybeSyncKeys, keysFunc)
+
+	return v.Verify(jwt)
+}
+
+// keysFuncWithID returns a function that retrieves at most unexpired
+// public key from the Client that matches the provided ID
+func (c *Client) keysFuncWithID(kID string) func() []key.PublicKey {
+	return func() []key.PublicKey {
+		c.keySetSyncMutex.RLock()
+		defer c.keySetSyncMutex.RUnlock()
+
+		if c.keySet.ExpiresAt().Before(time.Now()) {
+			return []key.PublicKey{}
+		}
+
+		k := c.keySet.Key(kID)
+		if k == nil {
+			return []key.PublicKey{}
+		}
+
+		return []key.PublicKey{*k}
+	}
+}
+
+// keysFuncAll returns a function that retrieves all unexpired public
+// keys from the Client
+func (c *Client) keysFuncAll() func() []key.PublicKey {
+	return func() []key.PublicKey {
+		c.keySetSyncMutex.RLock()
+		defer c.keySetSyncMutex.RUnlock()
+
+		if c.keySet.ExpiresAt().Before(time.Now()) {
+			return []key.PublicKey{}
+		}
+
+		return c.keySet.Keys()
+	}
+}
+
+type providerConfigRepo struct {
+	mu     sync.RWMutex
+	config ProviderConfig // do not access directly, use Get()
+}
+
+func newProviderConfigRepo(pc ProviderConfig) *providerConfigRepo {
+	return &providerConfigRepo{sync.RWMutex{}, pc}
+}
+
+// returns an error to implement ProviderConfigSetter
+func (r *providerConfigRepo) Set(cfg ProviderConfig) error {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+	r.config = cfg
+	return nil
+}
+
+func (r *providerConfigRepo) Get() ProviderConfig {
+	r.mu.RLock()
+	defer r.mu.RUnlock()
+	return r.config
+}

vendor/github.com/coreos/go-oidc/oidc/client_race_test.go

@@ -0,0 +1,81 @@
+// This file contains tests which depend on the race detector being enabled.
+// +build race
+
+package oidc
+
+import (
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"testing"
+	"time"
+)
+
+type testProvider struct {
+	baseURL *url.URL
+}
+
+func (p *testProvider) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	if r.URL.Path != discoveryConfigPath {
+		http.NotFound(w, r)
+		return
+	}
+
+	cfg := ProviderConfig{
+		Issuer:    p.baseURL,
+		ExpiresAt: time.Now().Add(time.Second),
+	}
+	cfg = fillRequiredProviderFields(cfg)
+	json.NewEncoder(w).Encode(&cfg)
+}
+
+// This test fails by triggering the race detector, not by calling t.Error or t.Fatal.
+func TestProviderSyncRace(t *testing.T) {
+
+	prov := &testProvider{}
+
+	s := httptest.NewServer(prov)
+	defer s.Close()
+	u, err := url.Parse(s.URL)
+	if err != nil {
+		t.Fatal(err)
+	}
+	prov.baseURL = u
+
+	prevValue := minimumProviderConfigSyncInterval
+	defer func() { minimumProviderConfigSyncInterval = prevValue }()
+
+	// Reduce the sync interval to increase the write frequencey.
+	minimumProviderConfigSyncInterval = 5 * time.Millisecond
+
+	cliCfg := ClientConfig{
+		HTTPClient: http.DefaultClient,
+	}
+	cli, err := NewClient(cliCfg)
+	if err != nil {
+		t.Error(err)
+		return
+	}
+
+	if !cli.providerConfig.Get().Empty() {
+		t.Errorf("want c.ProviderConfig == nil, got c.ProviderConfig=%#v")
+	}
+
+	// SyncProviderConfig beings a goroutine which writes to the client's provider config.
+	c := cli.SyncProviderConfig(s.URL)
+	if cli.providerConfig.Get().Empty() {
+		t.Errorf("want c.ProviderConfig != nil")
+	}
+
+	defer func() {
+		// stop the background process
+		c <- struct{}{}
+	}()
+
+	for i := 0; i < 10; i++ {
+		time.Sleep(5 * time.Millisecond)
+		// Creating an OAuth client reads from the provider config.
+		cli.OAuthClient()
+	}
+}

vendor/github.com/coreos/go-oidc/oidc/client_test.go

@@ -0,0 +1,654 @@
+package oidc
+
+import (
+	"encoding/json"
+	"net/mail"
+	"net/url"
+	"reflect"
+	"testing"
+	"time"
+
+	"github.com/coreos/go-oidc/jose"
+	"github.com/coreos/go-oidc/key"
+	"github.com/coreos/go-oidc/oauth2"
+	"github.com/kylelemons/godebug/pretty"
+)
+
+func TestNewClientScopeDefault(t *testing.T) {
+	tests := []struct {
+		c ClientConfig
+		e []string
+	}{
+		{
+			// No scope
+			c: ClientConfig{RedirectURL: "http://example.com/redirect"},
+			e: DefaultScope,
+		},
+		{
+			// Nil scope
+			c: ClientConfig{RedirectURL: "http://example.com/redirect", Scope: nil},
+			e: DefaultScope,
+		},
+		{
+			// Empty scope
+			c: ClientConfig{RedirectURL: "http://example.com/redirect", Scope: []string{}},
+			e: []string{},
+		},
+		{
+			// Custom scope equal to default
+			c: ClientConfig{RedirectURL: "http://example.com/redirect", Scope: []string{"openid", "email", "profile"}},
+			e: DefaultScope,
+		},
+		{
+			// Custom scope not including defaults
+			c: ClientConfig{RedirectURL: "http://example.com/redirect", Scope: []string{"foo", "bar"}},
+			e: []string{"foo", "bar"},
+		},
+		{
+			// Custom scopes overlapping with defaults
+			c: ClientConfig{RedirectURL: "http://example.com/redirect", Scope: []string{"openid", "foo"}},
+			e: []string{"openid", "foo"},
+		},
+	}
+
+	for i, tt := range tests {
+		c, err := NewClient(tt.c)
+		if err != nil {
+			t.Errorf("case %d: unexpected error from NewClient: %v", i, err)
+			continue
+		}
+		if !reflect.DeepEqual(tt.e, c.scope) {
+			t.Errorf("case %d: want: %v, got: %v", i, tt.e, c.scope)
+		}
+	}
+}
+
+func TestHealthy(t *testing.T) {
+	now := time.Now().UTC()
+
+	tests := []struct {
+		p ProviderConfig
+		h bool
+	}{
+		// all ok
+		{
+			p: ProviderConfig{
+				Issuer:    &url.URL{Scheme: "http", Host: "example.com"},
+				ExpiresAt: now.Add(time.Hour),
+			},
+			h: true,
+		},
+		// zero-value ProviderConfig.ExpiresAt
+		{
+			p: ProviderConfig{
+				Issuer: &url.URL{Scheme: "http", Host: "example.com"},
+			},
+			h: true,
+		},
+		// expired ProviderConfig
+		{
+			p: ProviderConfig{
+				Issuer:    &url.URL{Scheme: "http", Host: "example.com"},
+				ExpiresAt: now.Add(time.Hour * -1),
+			},
+			h: false,
+		},
+		// empty ProviderConfig
+		{
+			p: ProviderConfig{},
+			h: false,
+		},
+	}
+
+	for i, tt := range tests {
+		c := &Client{providerConfig: newProviderConfigRepo(tt.p)}
+		err := c.Healthy()
+		want := tt.h
+		got := (err == nil)
+
+		if want != got {
+			t.Errorf("case %d: want: healthy=%v, got: healhty=%v, err: %v", i, want, got, err)
+		}
+	}
+}
+
+func TestClientKeysFuncAll(t *testing.T) {
+	priv1, err := key.GeneratePrivateKey()
+	if err != nil {
+		t.Fatalf("failed to generate private key, error=%v", err)
+	}
+
+	priv2, err := key.GeneratePrivateKey()
+	if err != nil {
+		t.Fatalf("failed to generate private key, error=%v", err)
+	}
+
+	now := time.Now()
+	future := now.Add(time.Hour)
+	past := now.Add(-1 * time.Hour)
+
+	tests := []struct {
+		keySet *key.PublicKeySet
+		want   []key.PublicKey
+	}{
+		// two keys, non-expired set
+		{
+			keySet: key.NewPublicKeySet([]jose.JWK{priv2.JWK(), priv1.JWK()}, future),
+			want:   []key.PublicKey{*key.NewPublicKey(priv2.JWK()), *key.NewPublicKey(priv1.JWK())},
+		},
+
+		// no keys, non-expired set
+		{
+			keySet: key.NewPublicKeySet([]jose.JWK{}, future),
+			want:   []key.PublicKey{},
+		},
+
+		// two keys, expired set
+		{
+			keySet: key.NewPublicKeySet([]jose.JWK{priv2.JWK(), priv1.JWK()}, past),
+			want:   []key.PublicKey{},
+		},
+
+		// no keys, expired set
+		{
+			keySet: key.NewPublicKeySet([]jose.JWK{}, past),
+			want:   []key.PublicKey{},
+		},
+	}
+
+	for i, tt := range tests {
+		var c Client
+		c.keySet = *tt.keySet
+		keysFunc := c.keysFuncAll()
+		got := keysFunc()
+		if !reflect.DeepEqual(tt.want, got) {
+			t.Errorf("case %d: want=%#v got=%#v", i, tt.want, got)
+		}
+	}
+}
+
+func TestClientKeysFuncWithID(t *testing.T) {
+	priv1, err := key.GeneratePrivateKey()
+	if err != nil {
+		t.Fatalf("failed to generate private key, error=%v", err)
+	}
+
+	priv2, err := key.GeneratePrivateKey()
+	if err != nil {
+		t.Fatalf("failed to generate private key, error=%v", err)
+	}
+
+	now := time.Now()
+	future := now.Add(time.Hour)
+	past := now.Add(-1 * time.Hour)
+
+	tests := []struct {
+		keySet *key.PublicKeySet
+		argID  string
+		want   []key.PublicKey
+	}{
+		// two keys, match, non-expired set
+		{
+			keySet: key.NewPublicKeySet([]jose.JWK{priv2.JWK(), priv1.JWK()}, future),
+			argID:  priv2.ID(),
+			want:   []key.PublicKey{*key.NewPublicKey(priv2.JWK())},
+		},
+
+		// two keys, no match, non-expired set
+		{
+			keySet: key.NewPublicKeySet([]jose.JWK{priv2.JWK(), priv1.JWK()}, future),
+			argID:  "XXX",
+			want:   []key.PublicKey{},
+		},
+
+		// no keys, no match, non-expired set
+		{
+			keySet: key.NewPublicKeySet([]jose.JWK{}, future),
+			argID:  priv2.ID(),
+			want:   []key.PublicKey{},
+		},
+
+		// two keys, match, expired set
+		{
+			keySet: key.NewPublicKeySet([]jose.JWK{priv2.JWK(), priv1.JWK()}, past),
+			argID:  priv2.ID(),
+			want:   []key.PublicKey{},
+		},
+
+		// no keys, no match, expired set
+		{
+			keySet: key.NewPublicKeySet([]jose.JWK{}, past),
+			argID:  priv2.ID(),
+			want:   []key.PublicKey{},
+		},
+	}
+
+	for i, tt := range tests {
+		var c Client
+		c.keySet = *tt.keySet
+		keysFunc := c.keysFuncWithID(tt.argID)
+		got := keysFunc()
+		if !reflect.DeepEqual(tt.want, got) {
+			t.Errorf("case %d: want=%#v got=%#v", i, tt.want, got)
+		}
+	}
+}
+
+func TestClientMetadataValid(t *testing.T) {
+	tests := []ClientMetadata{
+		// one RedirectURL
+		ClientMetadata{
+			RedirectURIs: []url.URL{url.URL{Scheme: "http", Host: "example.com"}},
+		},
+
+		// one RedirectURL w/ nonempty path
+		ClientMetadata{
+			RedirectURIs: []url.URL{url.URL{Scheme: "http", Host: "example.com", Path: "/foo"}},
+		},
+
+		// two RedirectURIs
+		ClientMetadata{
+			RedirectURIs: []url.URL{
+				url.URL{Scheme: "http", Host: "foo.example.com"},
+				url.URL{Scheme: "http", Host: "bar.example.com"},
+			},
+		},
+	}
+
+	for i, tt := range tests {
+		if err := tt.Valid(); err != nil {
+			t.Errorf("case %d: unexpected error: %v", i, err)
+		}
+	}
+}
+
+func TestClientMetadataInvalid(t *testing.T) {
+	tests := []ClientMetadata{
+		// nil RedirectURls slice
+		ClientMetadata{
+			RedirectURIs: nil,
+		},
+
+		// empty RedirectURIs slice
+		ClientMetadata{
+			RedirectURIs: []url.URL{},
+		},
+
+		// empty url.URL
+		ClientMetadata{
+			RedirectURIs: []url.URL{url.URL{}},
+		},
+
+		// empty url.URL following OK item
+		ClientMetadata{
+			RedirectURIs: []url.URL{url.URL{Scheme: "http", Host: "example.com"}, url.URL{}},
+		},
+
+		// url.URL with empty Host
+		ClientMetadata{
+			RedirectURIs: []url.URL{url.URL{Scheme: "http", Host: ""}},
+		},
+
+		// url.URL with empty Scheme
+		ClientMetadata{
+			RedirectURIs: []url.URL{url.URL{Scheme: "", Host: "example.com"}},
+		},
+
+		// url.URL with non-HTTP(S) Scheme
+		ClientMetadata{
+			RedirectURIs: []url.URL{url.URL{Scheme: "tcp", Host: "127.0.0.1"}},
+		},
+
+		// EncryptionEnc without EncryptionAlg
+		ClientMetadata{
+			RedirectURIs: []url.URL{url.URL{Scheme: "http", Host: "example.com"}},
+			IDTokenResponseOptions: JWAOptions{
+				EncryptionEnc: "A128CBC-HS256",
+			},
+		},
+
+		// List of URIs with one empty element
+		ClientMetadata{
+			RedirectURIs: []url.URL{url.URL{Scheme: "http", Host: "example.com"}},
+			RequestURIs: []url.URL{
+				url.URL{Scheme: "http", Host: "example.com"},
+				url.URL{},
+			},
+		},
+	}
+
+	for i, tt := range tests {
+		if err := tt.Valid(); err == nil {
+			t.Errorf("case %d: expected non-nil error", i)
+		}
+	}
+}
+
+func TestChooseAuthMethod(t *testing.T) {
+	tests := []struct {
+		supported []string
+		chosen    string
+		err       bool
+	}{
+		{
+			supported: []string{},
+			chosen:    oauth2.AuthMethodClientSecretBasic,
+		},
+		{
+			supported: []string{oauth2.AuthMethodClientSecretBasic},
+			chosen:    oauth2.AuthMethodClientSecretBasic,
+		},
+		{
+			supported: []string{oauth2.AuthMethodClientSecretPost},
+			chosen:    oauth2.AuthMethodClientSecretPost,
+		},
+		{
+			supported: []string{oauth2.AuthMethodClientSecretPost, oauth2.AuthMethodClientSecretBasic},
+			chosen:    oauth2.AuthMethodClientSecretPost,
+		},
+		{
+			supported: []string{oauth2.AuthMethodClientSecretBasic, oauth2.AuthMethodClientSecretPost},
+			chosen:    oauth2.AuthMethodClientSecretBasic,
+		},
+		{
+			supported: []string{oauth2.AuthMethodClientSecretJWT, oauth2.AuthMethodClientSecretPost},
+			chosen:    oauth2.AuthMethodClientSecretPost,
+		},
+		{
+			supported: []string{oauth2.AuthMethodClientSecretJWT},
+			chosen:    "",
+			err:       true,
+		},
+	}
+
+	for i, tt := range tests {
+		cfg := ProviderConfig{
+			TokenEndpointAuthMethodsSupported: tt.supported,
+		}
+		got, err := chooseAuthMethod(cfg)
+		if tt.err {
+			if err == nil {
+				t.Errorf("case %d: expected non-nil err", i)
+			}
+			continue
+		}
+
+		if got != tt.chosen {
+			t.Errorf("case %d: want=%q, got=%q", i, tt.chosen, got)
+		}
+	}
+}
+
+func TestClientMetadataUnmarshal(t *testing.T) {
+	tests := []struct {
+		data    string
+		want    ClientMetadata
+		wantErr bool
+	}{
+		{
+			`{"redirect_uris":["https://example.com"]}`,
+			ClientMetadata{
+				RedirectURIs: []url.URL{
+					{Scheme: "https", Host: "example.com"},
+				},
+			},
+			false,
+		},
+		{
+			// redirect_uris required
+			`{}`,
+			ClientMetadata{},
+			true,
+		},
+		{
+			// must have at least one redirect_uris
+			`{"redirect_uris":[]}`,
+			ClientMetadata{},
+			true,
+		},
+		{
+			`{"redirect_uris":["https://example.com"],"contacts":["Ms. Foo <foo@example.com>"]}`,
+			ClientMetadata{
+				RedirectURIs: []url.URL{
+					{Scheme: "https", Host: "example.com"},
+				},
+				Contacts: []mail.Address{
+					{Name: "Ms. Foo", Address: "foo@example.com"},
+				},
+			},
+			false,
+		},
+		{
+			// invalid URI provided for field
+			`{"redirect_uris":["https://example.com"],"logo_uri":"not a valid uri"}`,
+			ClientMetadata{},
+			true,
+		},
+		{
+			// logo_uri can't be a list
+			`{"redirect_uris":["https://example.com"],"logo_uri":["https://example.com/logo"]}`,
+			ClientMetadata{},
+			true,
+		},
+		{
+			`{
+				"redirect_uris":["https://example.com"],
+				"userinfo_encrypted_response_alg":"RSA1_5",
+				"userinfo_encrypted_response_enc":"A128CBC-HS256",
+				"contacts": [
+					"jane doe <jane.doe@example.com>", "john doe <john.doe@example.com>"
+				]
+			}`,
+			ClientMetadata{
+				RedirectURIs: []url.URL{
+					{Scheme: "https", Host: "example.com"},
+				},
+				UserInfoResponseOptions: JWAOptions{
+					EncryptionAlg: "RSA1_5",
+					EncryptionEnc: "A128CBC-HS256",
+				},
+				Contacts: []mail.Address{
+					{Name: "jane doe", Address: "jane.doe@example.com"},
+					{Name: "john doe", Address: "john.doe@example.com"},
+				},
+			},
+			false,
+		},
+		{
+			// If encrypted_response_enc is provided encrypted_response_alg must also be.
+			`{
+				"redirect_uris":["https://example.com"],
+				"userinfo_encrypted_response_enc":"A128CBC-HS256"
+			}`,
+			ClientMetadata{},
+			true,
+		},
+	}
+	for i, tt := range tests {
+		var got ClientMetadata
+		if err := got.UnmarshalJSON([]byte(tt.data)); err != nil {
+			if !tt.wantErr {
+				t.Errorf("case %d: unmarshal failed: %v", i, err)
+			}
+			continue
+		}
+		if tt.wantErr {
+			t.Errorf("case %d: expected unmarshal to produce error", i)
+			continue
+		}
+
+		if diff := pretty.Compare(tt.want, got); diff != "" {
+			t.Errorf("case %d: results not equal: %s", i, diff)
+		}
+	}
+}
+
+func TestClientMetadataMarshal(t *testing.T) {
+
+	tests := []struct {
+		metadata ClientMetadata
+		want     string
+	}{
+		{
+			ClientMetadata{
+				RedirectURIs: []url.URL{
+					{Scheme: "https", Host: "example.com", Path: "/callback"},
+				},
+			},
+			`{"redirect_uris":["https://example.com/callback"]}`,
+		},
+		{
+			ClientMetadata{
+				RedirectURIs: []url.URL{
+					{Scheme: "https", Host: "example.com", Path: "/callback"},
+				},
+				RequestObjectOptions: JWAOptions{
+					EncryptionAlg: "RSA1_5",
+					EncryptionEnc: "A128CBC-HS256",
+				},
+			},
+			`{"redirect_uris":["https://example.com/callback"],"request_object_encryption_alg":"RSA1_5","request_object_encryption_enc":"A128CBC-HS256"}`,
+		},
+	}
+
+	for i, tt := range tests {
+		got, err := json.Marshal(&tt.metadata)
+		if err != nil {
+			t.Errorf("case %d: failed to marshal metadata: %v", i, err)
+			continue
+		}
+		if string(got) != tt.want {
+			t.Errorf("case %d: marshaled string did not match expected string", i)
+		}
+	}
+}
+
+func TestClientMetadataMarshalRoundTrip(t *testing.T) {
+	tests := []ClientMetadata{
+		{
+			RedirectURIs: []url.URL{
+				{Scheme: "https", Host: "example.com", Path: "/callback"},
+			},
+			LogoURI: &url.URL{Scheme: "https", Host: "example.com", Path: "/logo"},
+			RequestObjectOptions: JWAOptions{
+				EncryptionAlg: "RSA1_5",
+				EncryptionEnc: "A128CBC-HS256",
+			},
+			ApplicationType:         "native",
+			TokenEndpointAuthMethod: "client_secret_basic",
+		},
+	}
+
+	for i, want := range tests {
+		data, err := json.Marshal(&want)
+		if err != nil {
+			t.Errorf("case %d: failed to marshal metadata: %v", i, err)
+			continue
+		}
+		var got ClientMetadata
+		if err := json.Unmarshal(data, &got); err != nil {
+			t.Errorf("case %d: failed to unmarshal metadata: %v", i, err)
+			continue
+		}
+		if diff := pretty.Compare(want, got); diff != "" {
+			t.Errorf("case %d: struct did not survive a marshaling round trip: %s", i, diff)
+		}
+	}
+}
+
+func TestClientRegistrationResponseUnmarshal(t *testing.T) {
+	tests := []struct {
+		data          string
+		want          ClientRegistrationResponse
+		wantErr       bool
+		secretExpires bool
+	}{
+		{
+			`{
+				"client_id":"foo",
+				"client_secret":"bar",
+				"client_secret_expires_at": 1577858400,
+				"redirect_uris":[
+					"https://client.example.org/callback",
+					"https://client.example.org/callback2"
+				],
+				"client_name":"my_example"
+			}`,
+			ClientRegistrationResponse{
+				ClientID:              "foo",
+				ClientSecret:          "bar",
+				ClientSecretExpiresAt: time.Unix(1577858400, 0),
+				ClientMetadata: ClientMetadata{
+					RedirectURIs: []url.URL{
+						{Scheme: "https", Host: "client.example.org", Path: "/callback"},
+						{Scheme: "https", Host: "client.example.org", Path: "/callback2"},
+					},
+					ClientName: "my_example",
+				},
+			},
+			false,
+			true,
+		},
+		{
+			`{
+				"client_id":"foo",
+				"client_secret_expires_at": 0,
+				"redirect_uris":[
+					"https://client.example.org/callback",
+					"https://client.example.org/callback2"
+				],
+				"client_name":"my_example"
+			}`,
+			ClientRegistrationResponse{
+				ClientID: "foo",
+				ClientMetadata: ClientMetadata{
+					RedirectURIs: []url.URL{
+						{Scheme: "https", Host: "client.example.org", Path: "/callback"},
+						{Scheme: "https", Host: "client.example.org", Path: "/callback2"},
+					},
+					ClientName: "my_example",
+				},
+			},
+			false,
+			false,
+		},
+		{
+			// no client id
+			`{
+				"client_secret_expires_at": 0,
+				"redirect_uris":[
+					"https://client.example.org/callback",
+					"https://client.example.org/callback2"
+				],
+				"client_name":"my_example"
+			}`,
+			ClientRegistrationResponse{},
+			true,
+			false,
+		},
+	}
+
+	for i, tt := range tests {
+		var got ClientRegistrationResponse
+		if err := json.Unmarshal([]byte(tt.data), &got); err != nil {
+			if !tt.wantErr {
+				t.Errorf("case %d: unmarshal failed: %v", i, err)
+			}
+			continue
+		}
+
+		if tt.wantErr {
+			t.Errorf("case %d: expected unmarshal to produce error", i)
+			continue
+		}
+
+		if diff := pretty.Compare(tt.want, got); diff != "" {
+			t.Errorf("case %d: results not equal: %s", i, diff)
+		}
+		if tt.secretExpires && got.ClientSecretExpiresAt.IsZero() {
+			t.Errorf("case %d: expected client_secret to expire, but it doesn't", i)
+		} else if !tt.secretExpires && !got.ClientSecretExpiresAt.IsZero() {
+			t.Errorf("case %d: expected client_secret to not expire, but it does", i)
+		}
+	}
+}

vendor/github.com/coreos/go-oidc/oidc/doc.go

@@ -0,0 +1,2 @@
+// Package oidc is DEPRECATED. Use github.com/coreos/go-oidc instead.
+package oidc

vendor/github.com/coreos/go-oidc/oidc/identity.go

@@ -0,0 +1,44 @@
+package oidc
+
+import (
+	"errors"
+	"time"
+
+	"github.com/coreos/go-oidc/jose"
+)
+
+type Identity struct {
+	ID        string
+	Name      string
+	Email     string
+	ExpiresAt time.Time
+}
+
+func IdentityFromClaims(claims jose.Claims) (*Identity, error) {
+	if claims == nil {
+		return nil, errors.New("nil claim set")
+	}
+
+	var ident Identity
+	var err error
+	var ok bool
+
+	if ident.ID, ok, err = claims.StringClaim("sub"); err != nil {
+		return nil, err
+	} else if !ok {
+		return nil, errors.New("missing required claim: sub")
+	}
+
+	if ident.Email, _, err = claims.StringClaim("email"); err != nil {
+		return nil, err
+	}
+
+	exp, ok, err := claims.TimeClaim("exp")
+	if err != nil {
+		return nil, err
+	} else if ok {
+		ident.ExpiresAt = exp
+	}
+
+	return &ident, nil
+}

vendor/github.com/coreos/go-oidc/oidc/identity_test.go

@@ -0,0 +1,113 @@
+package oidc
+
+import (
+	"reflect"
+	"testing"
+	"time"
+
+	"github.com/coreos/go-oidc/jose"
+)
+
+func TestIdentityFromClaims(t *testing.T) {
+	tests := []struct {
+		claims jose.Claims
+		want   Identity
+	}{
+		{
+			claims: jose.Claims{
+				"sub":   "123850281",
+				"name":  "Elroy",
+				"email": "elroy@example.com",
+				"exp":   float64(1.416935146e+09),
+			},
+			want: Identity{
+				ID:        "123850281",
+				Name:      "",
+				Email:     "elroy@example.com",
+				ExpiresAt: time.Date(2014, time.November, 25, 17, 05, 46, 0, time.UTC),
+			},
+		},
+		{
+			claims: jose.Claims{
+				"sub":  "123850281",
+				"name": "Elroy",
+				"exp":  float64(1.416935146e+09),
+			},
+			want: Identity{
+				ID:        "123850281",
+				Name:      "",
+				Email:     "",
+				ExpiresAt: time.Date(2014, time.November, 25, 17, 05, 46, 0, time.UTC),
+			},
+		},
+		{
+			claims: jose.Claims{
+				"sub":   "123850281",
+				"name":  "Elroy",
+				"email": "elroy@example.com",
+				"exp":   int64(1416935146),
+			},
+			want: Identity{
+				ID:        "123850281",
+				Name:      "",
+				Email:     "elroy@example.com",
+				ExpiresAt: time.Date(2014, time.November, 25, 17, 05, 46, 0, time.UTC),
+			},
+		},
+		{
+			claims: jose.Claims{
+				"sub":   "123850281",
+				"name":  "Elroy",
+				"email": "elroy@example.com",
+			},
+			want: Identity{
+				ID:        "123850281",
+				Name:      "",
+				Email:     "elroy@example.com",
+				ExpiresAt: time.Time{},
+			},
+		},
+	}
+
+	for i, tt := range tests {
+		got, err := IdentityFromClaims(tt.claims)
+		if err != nil {
+			t.Errorf("case %d: unexpected error: %v", i, err)
+			continue
+		}
+		if !reflect.DeepEqual(tt.want, *got) {
+			t.Errorf("case %d: want=%#v got=%#v", i, tt.want, *got)
+		}
+	}
+}
+
+func TestIdentityFromClaimsFail(t *testing.T) {
+	tests := []jose.Claims{
+		// sub incorrect type
+		jose.Claims{
+			"sub":   123,
+			"name":  "foo",
+			"email": "elroy@example.com",
+		},
+		// email incorrect type
+		jose.Claims{
+			"sub":   "123850281",
+			"name":  "Elroy",
+			"email": false,
+		},
+		// exp incorrect type
+		jose.Claims{
+			"sub":   "123850281",
+			"name":  "Elroy",
+			"email": "elroy@example.com",
+			"exp":   "2014-11-25 18:05:46 +0000 UTC",
+		},
+	}
+
+	for i, tt := range tests {
+		_, err := IdentityFromClaims(tt)
+		if err == nil {
+			t.Errorf("case %d: expected non-nil error", i)
+		}
+	}
+}

vendor/github.com/coreos/go-oidc/oidc/interface.go

@@ -0,0 +1,3 @@
+package oidc
+
+type LoginFunc func(ident Identity, sessionKey string) (redirectURL string, err error)