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Signed-off-by: Mrunal Patel <mrunalp@gmail.com>
This commit is contained in:
Mrunal Patel 2017-01-31 16:45:59 -08:00
parent d6ab91be27
commit 8e5b17cf13
15431 changed files with 3971413 additions and 8881 deletions
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269
vendor/k8s.io/apimachinery/pkg/util/net/http.go generated vendored Normal file
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/*
Copyright 2016 The Kubernetes Authors.
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.
*/
package net
import (
"crypto/tls"
"fmt"
"io"
"net"
"net/http"
"net/url"
"os"
"strconv"
"strings"
"github.com/golang/glog"
"golang.org/x/net/http2"
)
// IsProbableEOF returns true if the given error resembles a connection termination
// scenario that would justify assuming that the watch is empty.
// These errors are what the Go http stack returns back to us which are general
// connection closure errors (strongly correlated) and callers that need to
// differentiate probable errors in connection behavior between normal "this is
// disconnected" should use the method.
func IsProbableEOF(err error) bool {
if uerr, ok := err.(*url.Error); ok {
err = uerr.Err
}
switch {
case err == io.EOF:
return true
case err.Error() == "http: can't write HTTP request on broken connection":
return true
case strings.Contains(err.Error(), "connection reset by peer"):
return true
case strings.Contains(strings.ToLower(err.Error()), "use of closed network connection"):
return true
}
return false
}
var defaultTransport = http.DefaultTransport.(*http.Transport)
// SetOldTransportDefaults applies the defaults from http.DefaultTransport
// for the Proxy, Dial, and TLSHandshakeTimeout fields if unset
func SetOldTransportDefaults(t *http.Transport) *http.Transport {
if t.Proxy == nil || isDefault(t.Proxy) {
// http.ProxyFromEnvironment doesn't respect CIDRs and that makes it impossible to exclude things like pod and service IPs from proxy settings
// ProxierWithNoProxyCIDR allows CIDR rules in NO_PROXY
t.Proxy = NewProxierWithNoProxyCIDR(http.ProxyFromEnvironment)
}
if t.Dial == nil {
t.Dial = defaultTransport.Dial
}
if t.TLSHandshakeTimeout == 0 {
t.TLSHandshakeTimeout = defaultTransport.TLSHandshakeTimeout
}
return t
}
// SetTransportDefaults applies the defaults from http.DefaultTransport
// for the Proxy, Dial, and TLSHandshakeTimeout fields if unset
func SetTransportDefaults(t *http.Transport) *http.Transport {
t = SetOldTransportDefaults(t)
// Allow clients to disable http2 if needed.
if s := os.Getenv("DISABLE_HTTP2"); len(s) > 0 {
glog.Infof("HTTP2 has been explicitly disabled")
} else {
if err := http2.ConfigureTransport(t); err != nil {
glog.Warningf("Transport failed http2 configuration: %v", err)
}
}
return t
}
type RoundTripperWrapper interface {
http.RoundTripper
WrappedRoundTripper() http.RoundTripper
}
type DialFunc func(net, addr string) (net.Conn, error)
func Dialer(transport http.RoundTripper) (DialFunc, error) {
if transport == nil {
return nil, nil
}
switch transport := transport.(type) {
case *http.Transport:
return transport.Dial, nil
case RoundTripperWrapper:
return Dialer(transport.WrappedRoundTripper())
default:
return nil, fmt.Errorf("unknown transport type: %v", transport)
}
}
// CloneTLSConfig returns a tls.Config with all exported fields except SessionTicketsDisabled and SessionTicketKey copied.
// This makes it safe to call CloneTLSConfig on a config in active use by a server.
// TODO: replace with tls.Config#Clone when we move to go1.8
func CloneTLSConfig(cfg *tls.Config) *tls.Config {
if cfg == nil {
return &tls.Config{}
}
return &tls.Config{
Rand: cfg.Rand,
Time: cfg.Time,
Certificates: cfg.Certificates,
NameToCertificate: cfg.NameToCertificate,
GetCertificate: cfg.GetCertificate,
RootCAs: cfg.RootCAs,
NextProtos: cfg.NextProtos,
ServerName: cfg.ServerName,
ClientAuth: cfg.ClientAuth,
ClientCAs: cfg.ClientCAs,
InsecureSkipVerify: cfg.InsecureSkipVerify,
CipherSuites: cfg.CipherSuites,
PreferServerCipherSuites: cfg.PreferServerCipherSuites,
ClientSessionCache: cfg.ClientSessionCache,
MinVersion: cfg.MinVersion,
MaxVersion: cfg.MaxVersion,
CurvePreferences: cfg.CurvePreferences,
}
}
type TLSClientConfigHolder interface {
TLSClientConfig() *tls.Config
}
func TLSClientConfig(transport http.RoundTripper) (*tls.Config, error) {
if transport == nil {
return nil, nil
}
switch transport := transport.(type) {
case *http.Transport:
return transport.TLSClientConfig, nil
case TLSClientConfigHolder:
return transport.TLSClientConfig(), nil
case RoundTripperWrapper:
return TLSClientConfig(transport.WrappedRoundTripper())
default:
return nil, fmt.Errorf("unknown transport type: %v", transport)
}
}
func FormatURL(scheme string, host string, port int, path string) *url.URL {
return &url.URL{
Scheme: scheme,
Host: net.JoinHostPort(host, strconv.Itoa(port)),
Path: path,
}
}
func GetHTTPClient(req *http.Request) string {
if userAgent, ok := req.Header["User-Agent"]; ok {
if len(userAgent) > 0 {
return userAgent[0]
}
}
return "unknown"
}
// Extracts and returns the clients IP from the given request.
// Looks at X-Forwarded-For header, X-Real-Ip header and request.RemoteAddr in that order.
// Returns nil if none of them are set or is set to an invalid value.
func GetClientIP(req *http.Request) net.IP {
hdr := req.Header
// First check the X-Forwarded-For header for requests via proxy.
hdrForwardedFor := hdr.Get("X-Forwarded-For")
if hdrForwardedFor != "" {
// X-Forwarded-For can be a csv of IPs in case of multiple proxies.
// Use the first valid one.
parts := strings.Split(hdrForwardedFor, ",")
for _, part := range parts {
ip := net.ParseIP(strings.TrimSpace(part))
if ip != nil {
return ip
}
}
}
// Try the X-Real-Ip header.
hdrRealIp := hdr.Get("X-Real-Ip")
if hdrRealIp != "" {
ip := net.ParseIP(hdrRealIp)
if ip != nil {
return ip
}
}
// Fallback to Remote Address in request, which will give the correct client IP when there is no proxy.
// Remote Address in Go's HTTP server is in the form host:port so we need to split that first.
host, _, err := net.SplitHostPort(req.RemoteAddr)
if err == nil {
return net.ParseIP(host)
}
// Fallback if Remote Address was just IP.
return net.ParseIP(req.RemoteAddr)
}
var defaultProxyFuncPointer = fmt.Sprintf("%p", http.ProxyFromEnvironment)
// isDefault checks to see if the transportProxierFunc is pointing to the default one
func isDefault(transportProxier func(*http.Request) (*url.URL, error)) bool {
transportProxierPointer := fmt.Sprintf("%p", transportProxier)
return transportProxierPointer == defaultProxyFuncPointer
}
// NewProxierWithNoProxyCIDR constructs a Proxier function that respects CIDRs in NO_PROXY and delegates if
// no matching CIDRs are found
func NewProxierWithNoProxyCIDR(delegate func(req *http.Request) (*url.URL, error)) func(req *http.Request) (*url.URL, error) {
// we wrap the default method, so we only need to perform our check if the NO_PROXY envvar has a CIDR in it
noProxyEnv := os.Getenv("NO_PROXY")
noProxyRules := strings.Split(noProxyEnv, ",")
cidrs := []*net.IPNet{}
for _, noProxyRule := range noProxyRules {
_, cidr, _ := net.ParseCIDR(noProxyRule)
if cidr != nil {
cidrs = append(cidrs, cidr)
}
}
if len(cidrs) == 0 {
return delegate
}
return func(req *http.Request) (*url.URL, error) {
host := req.URL.Host
// for some urls, the Host is already the host, not the host:port
if net.ParseIP(host) == nil {
var err error
host, _, err = net.SplitHostPort(req.URL.Host)
if err != nil {
return delegate(req)
}
}
ip := net.ParseIP(host)
if ip == nil {
return delegate(req)
}
for _, cidr := range cidrs {
if cidr.Contains(ip) {
return nil, nil
}
}
return delegate(req)
}
}

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vendor/k8s.io/apimachinery/pkg/util/net/http_test.go generated vendored Normal file
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/*
Copyright 2016 The Kubernetes Authors.
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.
*/
package net
import (
"crypto/tls"
"net"
"net/http"
"net/url"
"os"
"reflect"
"runtime"
"strings"
"testing"
"k8s.io/apimachinery/pkg/util/sets"
)
func TestCloneTLSConfig(t *testing.T) {
expected := sets.NewString(
// These fields are copied in CloneTLSConfig
"Rand",
"Time",
"Certificates",
"RootCAs",
"NextProtos",
"ServerName",
"InsecureSkipVerify",
"CipherSuites",
"PreferServerCipherSuites",
"MinVersion",
"MaxVersion",
"CurvePreferences",
"NameToCertificate",
"GetCertificate",
"ClientAuth",
"ClientCAs",
"ClientSessionCache",
// These fields are not copied
"SessionTicketsDisabled",
"SessionTicketKey",
// These fields are unexported
"serverInitOnce",
"mutex",
"sessionTicketKeys",
)
// See #33936.
if strings.HasPrefix(runtime.Version(), "go1.7") {
expected.Insert("DynamicRecordSizingDisabled", "Renegotiation")
}
fields := sets.NewString()
structType := reflect.TypeOf(tls.Config{})
for i := 0; i < structType.NumField(); i++ {
fields.Insert(structType.Field(i).Name)
}
if missing := expected.Difference(fields); len(missing) > 0 {
t.Errorf("Expected fields that were not seen in http.Transport: %v", missing.List())
}
if extra := fields.Difference(expected); len(extra) > 0 {
t.Errorf("New fields seen in http.Transport: %v\nAdd to CopyClientTLSConfig if client-relevant, then add to expected list in TestCopyClientTLSConfig", extra.List())
}
}
func TestGetClientIP(t *testing.T) {
ipString := "10.0.0.1"
ip := net.ParseIP(ipString)
invalidIPString := "invalidIPString"
testCases := []struct {
Request http.Request
ExpectedIP net.IP
}{
{
Request: http.Request{},
},
{
Request: http.Request{
Header: map[string][]string{
"X-Real-Ip": {ipString},
},
},
ExpectedIP: ip,
},
{
Request: http.Request{
Header: map[string][]string{
"X-Real-Ip": {invalidIPString},
},
},
},
{
Request: http.Request{
Header: map[string][]string{
"X-Forwarded-For": {ipString},
},
},
ExpectedIP: ip,
},
{
Request: http.Request{
Header: map[string][]string{
"X-Forwarded-For": {invalidIPString},
},
},
},
{
Request: http.Request{
Header: map[string][]string{
"X-Forwarded-For": {invalidIPString + "," + ipString},
},
},
ExpectedIP: ip,
},
{
Request: http.Request{
// RemoteAddr is in the form host:port
RemoteAddr: ipString + ":1234",
},
ExpectedIP: ip,
},
{
Request: http.Request{
RemoteAddr: invalidIPString,
},
},
{
Request: http.Request{
Header: map[string][]string{
"X-Forwarded-For": {invalidIPString},
},
// RemoteAddr is in the form host:port
RemoteAddr: ipString,
},
ExpectedIP: ip,
},
}
for i, test := range testCases {
if a, e := GetClientIP(&test.Request), test.ExpectedIP; reflect.DeepEqual(e, a) != true {
t.Fatalf("test case %d failed. expected: %v, actual: %v", i, e, a)
}
}
}
func TestProxierWithNoProxyCIDR(t *testing.T) {
testCases := []struct {
name string
noProxy string
url string
expectedDelegated bool
}{
{
name: "no env",
url: "https://192.168.143.1/api",
expectedDelegated: true,
},
{
name: "no cidr",
noProxy: "192.168.63.1",
url: "https://192.168.143.1/api",
expectedDelegated: true,
},
{
name: "hostname",
noProxy: "192.168.63.0/24,192.168.143.0/24",
url: "https://my-hostname/api",
expectedDelegated: true,
},
{
name: "match second cidr",
noProxy: "192.168.63.0/24,192.168.143.0/24",
url: "https://192.168.143.1/api",
expectedDelegated: false,
},
{
name: "match second cidr with host:port",
noProxy: "192.168.63.0/24,192.168.143.0/24",
url: "https://192.168.143.1:8443/api",
expectedDelegated: false,
},
}
for _, test := range testCases {
os.Setenv("NO_PROXY", test.noProxy)
actualDelegated := false
proxyFunc := NewProxierWithNoProxyCIDR(func(req *http.Request) (*url.URL, error) {
actualDelegated = true
return nil, nil
})
req, err := http.NewRequest("GET", test.url, nil)
if err != nil {
t.Errorf("%s: unexpected err: %v", test.name, err)
continue
}
if _, err := proxyFunc(req); err != nil {
t.Errorf("%s: unexpected err: %v", test.name, err)
continue
}
if test.expectedDelegated != actualDelegated {
t.Errorf("%s: expected %v, got %v", test.name, test.expectedDelegated, actualDelegated)
continue
}
}
}
type fakeTLSClientConfigHolder struct {
called bool
}
func (f *fakeTLSClientConfigHolder) TLSClientConfig() *tls.Config {
f.called = true
return nil
}
func (f *fakeTLSClientConfigHolder) RoundTrip(*http.Request) (*http.Response, error) {
return nil, nil
}
func TestTLSClientConfigHolder(t *testing.T) {
rt := &fakeTLSClientConfigHolder{}
TLSClientConfig(rt)
if !rt.called {
t.Errorf("didn't find tls config")
}
}

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vendor/k8s.io/apimachinery/pkg/util/net/interface.go generated vendored Normal file
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/*
Copyright 2016 The Kubernetes Authors.
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.
*/
package net
import (
"bufio"
"encoding/hex"
"fmt"
"io"
"net"
"os"
"strings"
"github.com/golang/glog"
)
type Route struct {
Interface string
Destination net.IP
Gateway net.IP
// TODO: add more fields here if needed
}
func getRoutes(input io.Reader) ([]Route, error) {
routes := []Route{}
if input == nil {
return nil, fmt.Errorf("input is nil")
}
scanner := bufio.NewReader(input)
for {
line, err := scanner.ReadString('\n')
if err == io.EOF {
break
}
//ignore the headers in the route info
if strings.HasPrefix(line, "Iface") {
continue
}
fields := strings.Fields(line)
routes = append(routes, Route{})
route := &routes[len(routes)-1]
route.Interface = fields[0]
ip, err := parseIP(fields[1])
if err != nil {
return nil, err
}
route.Destination = ip
ip, err = parseIP(fields[2])
if err != nil {
return nil, err
}
route.Gateway = ip
}
return routes, nil
}
func parseIP(str string) (net.IP, error) {
if str == "" {
return nil, fmt.Errorf("input is nil")
}
bytes, err := hex.DecodeString(str)
if err != nil {
return nil, err
}
//TODO add ipv6 support
if len(bytes) != net.IPv4len {
return nil, fmt.Errorf("only IPv4 is supported")
}
bytes[0], bytes[1], bytes[2], bytes[3] = bytes[3], bytes[2], bytes[1], bytes[0]
return net.IP(bytes), nil
}
func isInterfaceUp(intf *net.Interface) bool {
if intf == nil {
return false
}
if intf.Flags&net.FlagUp != 0 {
glog.V(4).Infof("Interface %v is up", intf.Name)
return true
}
return false
}
//getFinalIP method receives all the IP addrs of a Interface
//and returns a nil if the address is Loopback, Ipv6, link-local or nil.
//It returns a valid IPv4 if an Ipv4 address is found in the array.
func getFinalIP(addrs []net.Addr) (net.IP, error) {
if len(addrs) > 0 {
for i := range addrs {
glog.V(4).Infof("Checking addr %s.", addrs[i].String())
ip, _, err := net.ParseCIDR(addrs[i].String())
if err != nil {
return nil, err
}
//Only IPv4
//TODO : add IPv6 support
if ip.To4() != nil {
if !ip.IsLoopback() && !ip.IsLinkLocalMulticast() && !ip.IsLinkLocalUnicast() {
glog.V(4).Infof("IP found %v", ip)
return ip, nil
} else {
glog.V(4).Infof("Loopback/link-local found %v", ip)
}
} else {
glog.V(4).Infof("%v is not a valid IPv4 address", ip)
}
}
}
return nil, nil
}
func getIPFromInterface(intfName string, nw networkInterfacer) (net.IP, error) {
intf, err := nw.InterfaceByName(intfName)
if err != nil {
return nil, err
}
if isInterfaceUp(intf) {
addrs, err := nw.Addrs(intf)
if err != nil {
return nil, err
}
glog.V(4).Infof("Interface %q has %d addresses :%v.", intfName, len(addrs), addrs)
finalIP, err := getFinalIP(addrs)
if err != nil {
return nil, err
}
if finalIP != nil {
glog.V(4).Infof("valid IPv4 address for interface %q found as %v.", intfName, finalIP)
return finalIP, nil
}
}
return nil, nil
}
func flagsSet(flags net.Flags, test net.Flags) bool {
return flags&test != 0
}
func flagsClear(flags net.Flags, test net.Flags) bool {
return flags&test == 0
}
func chooseHostInterfaceNativeGo() (net.IP, error) {
intfs, err := net.Interfaces()
if err != nil {
return nil, err
}
i := 0
var ip net.IP
for i = range intfs {
if flagsSet(intfs[i].Flags, net.FlagUp) && flagsClear(intfs[i].Flags, net.FlagLoopback|net.FlagPointToPoint) {
addrs, err := intfs[i].Addrs()
if err != nil {
return nil, err
}
if len(addrs) > 0 {
for _, addr := range addrs {
if addrIP, _, err := net.ParseCIDR(addr.String()); err == nil {
if addrIP.To4() != nil {
ip = addrIP.To4()
if !ip.IsLinkLocalMulticast() && !ip.IsLinkLocalUnicast() {
break
}
}
}
}
if ip != nil {
// This interface should suffice.
break
}
}
}
}
if ip == nil {
return nil, fmt.Errorf("no acceptable interface from host")
}
glog.V(4).Infof("Choosing interface %s (IP %v) as default", intfs[i].Name, ip)
return ip, nil
}
//ChooseHostInterface is a method used fetch an IP for a daemon.
//It uses data from /proc/net/route file.
//For a node with no internet connection ,it returns error
//For a multi n/w interface node it returns the IP of the interface with gateway on it.
func ChooseHostInterface() (net.IP, error) {
inFile, err := os.Open("/proc/net/route")
if err != nil {
if os.IsNotExist(err) {
return chooseHostInterfaceNativeGo()
}
return nil, err
}
defer inFile.Close()
var nw networkInterfacer = networkInterface{}
return chooseHostInterfaceFromRoute(inFile, nw)
}
type networkInterfacer interface {
InterfaceByName(intfName string) (*net.Interface, error)
Addrs(intf *net.Interface) ([]net.Addr, error)
}
type networkInterface struct{}
func (_ networkInterface) InterfaceByName(intfName string) (*net.Interface, error) {
intf, err := net.InterfaceByName(intfName)
if err != nil {
return nil, err
}
return intf, nil
}
func (_ networkInterface) Addrs(intf *net.Interface) ([]net.Addr, error) {
addrs, err := intf.Addrs()
if err != nil {
return nil, err
}
return addrs, nil
}
func chooseHostInterfaceFromRoute(inFile io.Reader, nw networkInterfacer) (net.IP, error) {
routes, err := getRoutes(inFile)
if err != nil {
return nil, err
}
zero := net.IP{0, 0, 0, 0}
var finalIP net.IP
for i := range routes {
//find interface with gateway
if routes[i].Destination.Equal(zero) {
glog.V(4).Infof("Default route transits interface %q", routes[i].Interface)
finalIP, err := getIPFromInterface(routes[i].Interface, nw)
if err != nil {
return nil, err
}
if finalIP != nil {
glog.V(4).Infof("Choosing IP %v ", finalIP)
return finalIP, nil
}
}
}
glog.V(4).Infof("No valid IP found")
if finalIP == nil {
return nil, fmt.Errorf("Unable to select an IP.")
}
return nil, nil
}
// If bind-address is usable, return it directly
// If bind-address is not usable (unset, 0.0.0.0, or loopback), we will use the host's default
// interface.
func ChooseBindAddress(bindAddress net.IP) (net.IP, error) {
if bindAddress == nil || bindAddress.IsUnspecified() || bindAddress.IsLoopback() {
hostIP, err := ChooseHostInterface()
if err != nil {
return nil, err
}
bindAddress = hostIP
}
return bindAddress, nil
}

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vendor/k8s.io/apimachinery/pkg/util/net/interface_test.go generated vendored Normal file
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/*
Copyright 2014 The Kubernetes Authors.
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.
*/
package net
import (
"fmt"
"io"
"net"
"strings"
"testing"
)
const gatewayfirst = `Iface Destination Gateway Flags RefCnt Use Metric Mask MTU Window IRTT
eth3 00000000 0100FE0A 0003 0 0 1024 00000000 0 0 0
eth3 0000FE0A 00000000 0001 0 0 0 0080FFFF 0 0 0
docker0 000011AC 00000000 0001 0 0 0 0000FFFF 0 0 0
virbr0 007AA8C0 00000000 0001 0 0 0 00FFFFFF 0 0 0
`
const gatewaylast = `Iface Destination Gateway Flags RefCnt Use Metric Mask MTU Window IRTT
docker0 000011AC 00000000 0001 0 0 0 0000FFFF 0 0 0
virbr0 007AA8C0 00000000 0001 0 0 0 00FFFFFF 0 0 0
eth3 0000FE0A 00000000 0001 0 0 0 0080FFFF 0 0 0
eth3 00000000 0100FE0A 0003 0 0 1024 00000000 0 0 0
`
const gatewaymiddle = `Iface Destination Gateway Flags RefCnt Use Metric Mask MTU Window IRTT
eth3 0000FE0A 00000000 0001 0 0 0 0080FFFF 0 0 0
docker0 000011AC 00000000 0001 0 0 0 0000FFFF 0 0 0
eth3 00000000 0100FE0A 0003 0 0 1024 00000000 0 0 0
virbr0 007AA8C0 00000000 0001 0 0 0 00FFFFFF 0 0 0
`
const noInternetConnection = `Iface Destination Gateway Flags RefCnt Use Metric Mask MTU Window IRTT
docker0 000011AC 00000000 0001 0 0 0 0000FFFF 0 0 0
virbr0 007AA8C0 00000000 0001 0 0 0 00FFFFFF 0 0 0
`
const nothing = `Iface Destination Gateway Flags RefCnt Use Metric Mask MTU Window IRTT
`
const gatewayfirstIpv6_1 = `Iface Destination Gateway Flags RefCnt Use Metric Mask MTU Window IRTT
eth3 00000000 0100FE0A 0003 0 0 1024 00000000 0 0 0
eth3 0000FE0AA1 00000000 0001 0 0 0 0080FFFF 0 0 0
docker0 000011AC 00000000 0001 0 0 0 0000FFFF 0 0 0
virbr0 007AA8C0 00000000 0001 0 0 0 00FFFFFF 0 0 0
`
const gatewayfirstIpv6_2 = `Iface Destination Gateway Flags RefCnt Use Metric Mask MTU Window IRTT
eth3 00000000 0100FE0AA1 0003 0 0 1024 00000000 0 0 0
eth3 0000FE0A 00000000 0001 0 0 0 0080FFFF 0 0 0
docker0 000011AC 00000000 0001 0 0 0 0000FFFF 0 0 0
virbr0 007AA8C0 00000000 0001 0 0 0 00FFFFFF 0 0 0
`
const route_Invalidhex = `Iface Destination Gateway Flags RefCnt Use Metric Mask MTU Window IRTT
eth3 00000000 0100FE0AA 0003 0 0 1024 00000000 0 0 0
eth3 0000FE0A 00000000 0001 0 0 0 0080FFFF 0 0 0
docker0 000011AC 00000000 0001 0 0 0 0000FFFF 0 0 0
virbr0 007AA8C0 00000000 0001 0 0 0 00FFFFFF 0 0 0
`
// Based on DigitalOcean COREOS
const gatewayfirstLinkLocal = `Iface Destination Gateway Flags RefCnt Use Metric Mask MTU Window IRTT
eth0 00000000 0120372D 0001 0 0 0 00000000 0 0 0
eth0 00000000 00000000 0001 0 0 2048 00000000 0 0 0
`
func TestGetRoutes(t *testing.T) {
testCases := []struct {
tcase string
route string
expected int
}{
{"gatewayfirst", gatewayfirst, 4},
{"gatewaymiddle", gatewaymiddle, 4},
{"gatewaylast", gatewaylast, 4},
{"nothing", nothing, 0},
{"gatewayfirstIpv6_1", gatewayfirstIpv6_1, 0},
{"gatewayfirstIpv6_2", gatewayfirstIpv6_2, 0},
{"route_Invalidhex", route_Invalidhex, 0},
}
for _, tc := range testCases {
r := strings.NewReader(tc.route)
routes, err := getRoutes(r)
if len(routes) != tc.expected {
t.Errorf("case[%v]: expected %v, got %v .err : %v", tc.tcase, tc.expected, len(routes), err)
}
}
}
func TestParseIP(t *testing.T) {
testCases := []struct {
tcase string
ip string
success bool
expected net.IP
}{
{"empty", "", false, nil},
{"too short", "AA", false, nil},
{"too long", "0011223344", false, nil},
{"invalid", "invalid!", false, nil},
{"zero", "00000000", true, net.IP{0, 0, 0, 0}},
{"ffff", "FFFFFFFF", true, net.IP{0xff, 0xff, 0xff, 0xff}},
{"valid", "12345678", true, net.IP{120, 86, 52, 18}},
}
for _, tc := range testCases {
ip, err := parseIP(tc.ip)
if !ip.Equal(tc.expected) {
t.Errorf("case[%v]: expected %q, got %q . err : %v", tc.tcase, tc.expected, ip, err)
}
}
}
func TestIsInterfaceUp(t *testing.T) {
testCases := []struct {
tcase string
intf net.Interface
expected bool
}{
{"up", net.Interface{Index: 0, MTU: 0, Name: "eth3", HardwareAddr: nil, Flags: net.FlagUp}, true},
{"down", net.Interface{Index: 0, MTU: 0, Name: "eth3", HardwareAddr: nil, Flags: 0}, false},
{"nothing", net.Interface{}, false},
}
for _, tc := range testCases {
it := isInterfaceUp(&tc.intf)
if it != tc.expected {
t.Errorf("case[%v]: expected %v, got %v .", tc.tcase, tc.expected, it)
}
}
}
type addrStruct struct{ val string }
func (a addrStruct) Network() string {
return a.val
}
func (a addrStruct) String() string {
return a.val
}
func TestFinalIP(t *testing.T) {
testCases := []struct {
tcase string
addr []net.Addr
expected net.IP
}{
{"ipv6", []net.Addr{addrStruct{val: "fe80::2f7:6fff:fe6e:2956/64"}}, nil},
{"invalidCIDR", []net.Addr{addrStruct{val: "fe80::2f7:67fff:fe6e:2956/64"}}, nil},
{"loopback", []net.Addr{addrStruct{val: "127.0.0.1/24"}}, nil},
{"ip4", []net.Addr{addrStruct{val: "10.254.12.132/17"}}, net.ParseIP("10.254.12.132")},
{"nothing", []net.Addr{}, nil},
}
for _, tc := range testCases {
ip, err := getFinalIP(tc.addr)
if !ip.Equal(tc.expected) {
t.Errorf("case[%v]: expected %v, got %v .err : %v", tc.tcase, tc.expected, ip, err)
}
}
}
func TestAddrs(t *testing.T) {
var nw networkInterfacer = validNetworkInterface{}
intf := net.Interface{Index: 0, MTU: 0, Name: "eth3", HardwareAddr: nil, Flags: 0}
addrs, err := nw.Addrs(&intf)
if err != nil {
t.Errorf("expected no error got : %v", err)
}
if len(addrs) != 2 {
t.Errorf("expected addrs: 2 got null")
}
}
type validNetworkInterface struct {
}
func (_ validNetworkInterface) InterfaceByName(intfName string) (*net.Interface, error) {
c := net.Interface{Index: 0, MTU: 0, Name: "eth3", HardwareAddr: nil, Flags: net.FlagUp}
return &c, nil
}
func (_ validNetworkInterface) Addrs(intf *net.Interface) ([]net.Addr, error) {
var ifat []net.Addr
ifat = []net.Addr{
addrStruct{val: "fe80::2f7:6fff:fe6e:2956/64"}, addrStruct{val: "10.254.71.145/17"}}
return ifat, nil
}
type validNetworkInterfaceWithLinkLocal struct {
}
func (_ validNetworkInterfaceWithLinkLocal) InterfaceByName(intfName string) (*net.Interface, error) {
c := net.Interface{Index: 0, MTU: 0, Name: "eth0", HardwareAddr: nil, Flags: net.FlagUp}
return &c, nil
}
func (_ validNetworkInterfaceWithLinkLocal) Addrs(intf *net.Interface) ([]net.Addr, error) {
var ifat []net.Addr
ifat = []net.Addr{addrStruct{val: "169.254.162.166/16"}, addrStruct{val: "45.55.47.146/19"}}
return ifat, nil
}
type validNetworkInterfacewithIpv6Only struct {
}
func (_ validNetworkInterfacewithIpv6Only) InterfaceByName(intfName string) (*net.Interface, error) {
c := net.Interface{Index: 0, MTU: 0, Name: "eth3", HardwareAddr: nil, Flags: net.FlagUp}
return &c, nil
}
func (_ validNetworkInterfacewithIpv6Only) Addrs(intf *net.Interface) ([]net.Addr, error) {
var ifat []net.Addr
ifat = []net.Addr{addrStruct{val: "fe80::2f7:6fff:fe6e:2956/64"}}
return ifat, nil
}
type noNetworkInterface struct {
}
func (_ noNetworkInterface) InterfaceByName(intfName string) (*net.Interface, error) {
return nil, fmt.Errorf("unable get Interface")
}
func (_ noNetworkInterface) Addrs(intf *net.Interface) ([]net.Addr, error) {
return nil, nil
}
type networkInterfacewithNoAddrs struct {
}
func (_ networkInterfacewithNoAddrs) InterfaceByName(intfName string) (*net.Interface, error) {
c := net.Interface{Index: 0, MTU: 0, Name: "eth3", HardwareAddr: nil, Flags: net.FlagUp}
return &c, nil
}
func (_ networkInterfacewithNoAddrs) Addrs(intf *net.Interface) ([]net.Addr, error) {
return nil, fmt.Errorf("unable get Addrs")
}
type networkInterfacewithIpv6addrs struct {
}
func (_ networkInterfacewithIpv6addrs) InterfaceByName(intfName string) (*net.Interface, error) {
c := net.Interface{Index: 0, MTU: 0, Name: "eth3", HardwareAddr: nil, Flags: net.FlagUp}
return &c, nil
}
func (_ networkInterfacewithIpv6addrs) Addrs(intf *net.Interface) ([]net.Addr, error) {
var ifat []net.Addr
ifat = []net.Addr{addrStruct{val: "fe80::2f7:6ffff:fe6e:2956/64"}}
return ifat, nil
}
func TestGetIPFromInterface(t *testing.T) {
testCases := []struct {
tcase string
nwname string
nw networkInterfacer
expected net.IP
}{
{"valid", "eth3", validNetworkInterface{}, net.ParseIP("10.254.71.145")},
{"ipv6", "eth3", validNetworkInterfacewithIpv6Only{}, nil},
{"nothing", "eth3", noNetworkInterface{}, nil},
}
for _, tc := range testCases {
ip, err := getIPFromInterface(tc.nwname, tc.nw)
if !ip.Equal(tc.expected) {
t.Errorf("case[%v]: expected %v, got %+v .err : %v", tc.tcase, tc.expected, ip, err)
}
}
}
func TestChooseHostInterfaceFromRoute(t *testing.T) {
testCases := []struct {
tcase string
inFile io.Reader
nw networkInterfacer
expected net.IP
}{
{"valid_routefirst", strings.NewReader(gatewayfirst), validNetworkInterface{}, net.ParseIP("10.254.71.145")},
{"valid_routelast", strings.NewReader(gatewaylast), validNetworkInterface{}, net.ParseIP("10.254.71.145")},
{"valid_routemiddle", strings.NewReader(gatewaymiddle), validNetworkInterface{}, net.ParseIP("10.254.71.145")},
{"valid_routemiddle_ipv6", strings.NewReader(gatewaymiddle), validNetworkInterfacewithIpv6Only{}, nil},
{"no internet connection", strings.NewReader(noInternetConnection), validNetworkInterface{}, nil},
{"no non-link-local ip", strings.NewReader(gatewayfirstLinkLocal), validNetworkInterfaceWithLinkLocal{}, net.ParseIP("45.55.47.146")},
{"no route", strings.NewReader(nothing), validNetworkInterface{}, nil},
{"no route file", nil, validNetworkInterface{}, nil},
{"no interfaces", nil, noNetworkInterface{}, nil},
{"no interface Addrs", strings.NewReader(gatewaymiddle), networkInterfacewithNoAddrs{}, nil},
{"Invalid Addrs", strings.NewReader(gatewaymiddle), networkInterfacewithIpv6addrs{}, nil},
}
for _, tc := range testCases {
ip, err := chooseHostInterfaceFromRoute(tc.inFile, tc.nw)
if !ip.Equal(tc.expected) {
t.Errorf("case[%v]: expected %v, got %+v .err : %v", tc.tcase, tc.expected, ip, err)
}
}
}

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/*
Copyright 2015 The Kubernetes Authors.
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.
*/
package net
import (
"fmt"
"strconv"
"strings"
)
// PortRange represents a range of TCP/UDP ports. To represent a single port,
// set Size to 1.
type PortRange struct {
Base int
Size int
}
// Contains tests whether a given port falls within the PortRange.
func (pr *PortRange) Contains(p int) bool {
return (p >= pr.Base) && ((p - pr.Base) < pr.Size)
}
// String converts the PortRange to a string representation, which can be
// parsed by PortRange.Set or ParsePortRange.
func (pr PortRange) String() string {
if pr.Size == 0 {
return ""
}
return fmt.Sprintf("%d-%d", pr.Base, pr.Base+pr.Size-1)
}
// Set parses a string of the form "min-max", inclusive at both ends, and
// sets the PortRange from it. This is part of the flag.Value and pflag.Value
// interfaces.
func (pr *PortRange) Set(value string) error {
value = strings.TrimSpace(value)
// TODO: Accept "80" syntax
// TODO: Accept "80+8" syntax
if value == "" {
pr.Base = 0
pr.Size = 0
return nil
}
hyphenIndex := strings.Index(value, "-")
if hyphenIndex == -1 {
return fmt.Errorf("expected hyphen in port range")
}
var err error
var low int
var high int
low, err = strconv.Atoi(value[:hyphenIndex])
if err == nil {
high, err = strconv.Atoi(value[hyphenIndex+1:])
}
if err != nil {
return fmt.Errorf("unable to parse port range: %s: %v", value, err)
}
if low > 65535 || high > 65535 {
return fmt.Errorf("the port range cannot be greater than 65535: %s", value)
}
if high < low {
return fmt.Errorf("end port cannot be less than start port: %s", value)
}
pr.Base = low
pr.Size = 1 + high - low
return nil
}
// Type returns a descriptive string about this type. This is part of the
// pflag.Value interface.
func (*PortRange) Type() string {
return "portRange"
}
// ParsePortRange parses a string of the form "min-max", inclusive at both
// ends, and initializs a new PortRange from it.
func ParsePortRange(value string) (*PortRange, error) {
pr := &PortRange{}
err := pr.Set(value)
if err != nil {
return nil, err
}
return pr, nil
}
func ParsePortRangeOrDie(value string) *PortRange {
pr, err := ParsePortRange(value)
if err != nil {
panic(fmt.Sprintf("couldn't parse port range %q: %v", value, err))
}
return pr
}

69
vendor/k8s.io/apimachinery/pkg/util/net/port_range_test.go generated vendored Normal file
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/*
Copyright 2015 The Kubernetes Authors.
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.
*/
package net
import (
"testing"
flag "github.com/spf13/pflag"
)
func TestPortRange(t *testing.T) {
testCases := []struct {
input string
success bool
expected string
included int
excluded int
}{
{"100-200", true, "100-200", 200, 201},
{" 100-200 ", true, "100-200", 200, 201},
{"0-0", true, "0-0", 0, 1},
{"", true, "", -1, 0},
{"100", false, "", -1, -1},
{"100 - 200", false, "", -1, -1},
{"-100", false, "", -1, -1},
{"100-", false, "", -1, -1},
{"200-100", false, "", -1, -1},
{"60000-70000", false, "", -1, -1},
{"70000-80000", false, "", -1, -1},
}
for i := range testCases {
tc := &testCases[i]
pr := &PortRange{}
var f flag.Value = pr
err := f.Set(tc.input)
if err != nil && tc.success == true {
t.Errorf("expected success, got %q", err)
continue
} else if err == nil && tc.success == false {
t.Errorf("expected failure")
continue
} else if tc.success {
if f.String() != tc.expected {
t.Errorf("expected %q, got %q", tc.expected, f.String())
}
if tc.included >= 0 && !pr.Contains(tc.included) {
t.Errorf("expected %q to include %d", f.String(), tc.included)
}
if tc.excluded >= 0 && pr.Contains(tc.excluded) {
t.Errorf("expected %q to exclude %d", f.String(), tc.excluded)
}
}
}
}

77
vendor/k8s.io/apimachinery/pkg/util/net/port_split.go generated vendored Normal file
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/*
Copyright 2015 The Kubernetes Authors.
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.
*/
package net
import (
"strings"
"k8s.io/apimachinery/pkg/util/sets"
)
var validSchemes = sets.NewString("http", "https", "")
// SplitSchemeNamePort takes a string of the following forms:
// * "<name>", returns "", "<name>","", true
// * "<name>:<port>", returns "", "<name>","<port>",true
// * "<scheme>:<name>:<port>", returns "<scheme>","<name>","<port>",true
//
// Name must be non-empty or valid will be returned false.
// Scheme must be "http" or "https" if specified
// Port is returned as a string, and it is not required to be numeric (could be
// used for a named port, for example).
func SplitSchemeNamePort(id string) (scheme, name, port string, valid bool) {
parts := strings.Split(id, ":")
switch len(parts) {
case 1:
name = parts[0]
case 2:
name = parts[0]
port = parts[1]
case 3:
scheme = parts[0]
name = parts[1]
port = parts[2]
default:
return "", "", "", false
}
if len(name) > 0 && validSchemes.Has(scheme) {
return scheme, name, port, true
} else {
return "", "", "", false
}
}
// JoinSchemeNamePort returns a string that specifies the scheme, name, and port:
// * "<name>"
// * "<name>:<port>"
// * "<scheme>:<name>:<port>"
// None of the parameters may contain a ':' character
// Name is required
// Scheme must be "", "http", or "https"
func JoinSchemeNamePort(scheme, name, port string) string {
if len(scheme) > 0 {
// Must include three segments to specify scheme
return scheme + ":" + name + ":" + port
}
if len(port) > 0 {
// Must include two segments to specify port
return name + ":" + port
}
// Return name alone
return name
}

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vendor/k8s.io/apimachinery/pkg/util/net/port_split_test.go generated vendored Normal file
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/*
Copyright 2015 The Kubernetes Authors.
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.
*/
package net
import (
"testing"
)
func TestSplitSchemeNamePort(t *testing.T) {
table := []struct {
in string
name, port, scheme string
valid bool
normalized bool
}{
{
in: "aoeu:asdf",
name: "aoeu",
port: "asdf",
valid: true,
normalized: true,
}, {
in: "http:aoeu:asdf",
scheme: "http",
name: "aoeu",
port: "asdf",
valid: true,
normalized: true,
}, {
in: "https:aoeu:",
scheme: "https",
name: "aoeu",
port: "",
valid: true,
normalized: false,
}, {
in: "https:aoeu:asdf",
scheme: "https",
name: "aoeu",
port: "asdf",
valid: true,
normalized: true,
}, {
in: "aoeu:",
name: "aoeu",
valid: true,
normalized: false,
}, {
in: "aoeu",
name: "aoeu",
valid: true,
normalized: true,
}, {
in: ":asdf",
valid: false,
}, {
in: "aoeu:asdf:htns",
valid: false,
}, {
in: "http::asdf",
valid: false,
}, {
in: "http::",
valid: false,
}, {
in: "",
valid: false,
},
}
for _, item := range table {
scheme, name, port, valid := SplitSchemeNamePort(item.in)
if e, a := item.scheme, scheme; e != a {
t.Errorf("%q: Wanted %q, got %q", item.in, e, a)
}
if e, a := item.name, name; e != a {
t.Errorf("%q: Wanted %q, got %q", item.in, e, a)
}
if e, a := item.port, port; e != a {
t.Errorf("%q: Wanted %q, got %q", item.in, e, a)
}
if e, a := item.valid, valid; e != a {
t.Errorf("%q: Wanted %t, got %t", item.in, e, a)
}
// Make sure valid items round trip through JoinSchemeNamePort
if item.valid {
out := JoinSchemeNamePort(scheme, name, port)
if item.normalized && out != item.in {
t.Errorf("%q: Wanted %s, got %s", item.in, item.in, out)
}
scheme, name, port, valid := SplitSchemeNamePort(out)
if e, a := item.scheme, scheme; e != a {
t.Errorf("%q: Wanted %q, got %q", item.in, e, a)
}
if e, a := item.name, name; e != a {
t.Errorf("%q: Wanted %q, got %q", item.in, e, a)
}
if e, a := item.port, port; e != a {
t.Errorf("%q: Wanted %q, got %q", item.in, e, a)
}
if e, a := item.valid, valid; e != a {
t.Errorf("%q: Wanted %t, got %t", item.in, e, a)
}
}
}
}

46
vendor/k8s.io/apimachinery/pkg/util/net/util.go generated vendored Normal file
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/*
Copyright 2016 The Kubernetes Authors.
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.
*/
package net
import (
"net"
"reflect"
"syscall"
)
// IPNetEqual checks if the two input IPNets are representing the same subnet.
// For example,
// 10.0.0.1/24 and 10.0.0.0/24 are the same subnet.
// 10.0.0.1/24 and 10.0.0.0/25 are not the same subnet.
func IPNetEqual(ipnet1, ipnet2 *net.IPNet) bool {
if ipnet1 == nil || ipnet2 == nil {
return false
}
if reflect.DeepEqual(ipnet1.Mask, ipnet2.Mask) && ipnet1.Contains(ipnet2.IP) && ipnet2.Contains(ipnet1.IP) {
return true
}
return false
}
// Returns if the given err is "connection reset by peer" error.
func IsConnectionReset(err error) bool {
opErr, ok := err.(*net.OpError)
if ok && opErr.Err.Error() == syscall.ECONNRESET.Error() {
return true
}
return false
}

68
vendor/k8s.io/apimachinery/pkg/util/net/util_test.go generated vendored Normal file
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/*
Copyright 2016 The Kubernetes Authors.
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.
*/
package net
import (
"net"
"testing"
)
func getIPNet(cidr string) *net.IPNet {
_, ipnet, _ := net.ParseCIDR(cidr)
return ipnet
}
func TestIPNetEqual(t *testing.T) {
testCases := []struct {
ipnet1 *net.IPNet
ipnet2 *net.IPNet
expect bool
}{
//null case
{
getIPNet("10.0.0.1/24"),
getIPNet(""),
false,
},
{
getIPNet("10.0.0.0/24"),
getIPNet("10.0.0.0/24"),
true,
},
{
getIPNet("10.0.0.0/24"),
getIPNet("10.0.0.1/24"),
true,
},
{
getIPNet("10.0.0.0/25"),
getIPNet("10.0.0.0/24"),
false,
},
{
getIPNet("10.0.1.0/24"),
getIPNet("10.0.0.0/24"),
false,
},
}
for _, tc := range testCases {
if tc.expect != IPNetEqual(tc.ipnet1, tc.ipnet2) {
t.Errorf("Expect equality of %s and %s be to %v", tc.ipnet1.String(), tc.ipnet2.String(), tc.expect)
}
}
}