289 lines
6 KiB
Go
289 lines
6 KiB
Go
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// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package ssh
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import (
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"bytes"
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"math/big"
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"math/rand"
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"reflect"
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"testing"
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"testing/quick"
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)
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var intLengthTests = []struct {
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val, length int
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}{
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{0, 4 + 0},
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{1, 4 + 1},
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{127, 4 + 1},
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{128, 4 + 2},
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{-1, 4 + 1},
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}
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func TestIntLength(t *testing.T) {
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for _, test := range intLengthTests {
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v := new(big.Int).SetInt64(int64(test.val))
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length := intLength(v)
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if length != test.length {
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t.Errorf("For %d, got length %d but expected %d", test.val, length, test.length)
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}
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}
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}
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type msgAllTypes struct {
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Bool bool `sshtype:"21"`
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Array [16]byte
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Uint64 uint64
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Uint32 uint32
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Uint8 uint8
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String string
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Strings []string
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Bytes []byte
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Int *big.Int
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Rest []byte `ssh:"rest"`
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}
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func (t *msgAllTypes) Generate(rand *rand.Rand, size int) reflect.Value {
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m := &msgAllTypes{}
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m.Bool = rand.Intn(2) == 1
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randomBytes(m.Array[:], rand)
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m.Uint64 = uint64(rand.Int63n(1<<63 - 1))
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m.Uint32 = uint32(rand.Intn((1 << 31) - 1))
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m.Uint8 = uint8(rand.Intn(1 << 8))
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m.String = string(m.Array[:])
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m.Strings = randomNameList(rand)
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m.Bytes = m.Array[:]
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m.Int = randomInt(rand)
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m.Rest = m.Array[:]
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return reflect.ValueOf(m)
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}
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func TestMarshalUnmarshal(t *testing.T) {
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rand := rand.New(rand.NewSource(0))
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iface := &msgAllTypes{}
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ty := reflect.ValueOf(iface).Type()
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n := 100
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if testing.Short() {
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n = 5
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}
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for j := 0; j < n; j++ {
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v, ok := quick.Value(ty, rand)
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if !ok {
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t.Errorf("failed to create value")
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break
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}
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m1 := v.Elem().Interface()
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m2 := iface
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marshaled := Marshal(m1)
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if err := Unmarshal(marshaled, m2); err != nil {
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t.Errorf("Unmarshal %#v: %s", m1, err)
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break
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}
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if !reflect.DeepEqual(v.Interface(), m2) {
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t.Errorf("got: %#v\nwant:%#v\n%x", m2, m1, marshaled)
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break
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}
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}
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}
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func TestUnmarshalEmptyPacket(t *testing.T) {
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var b []byte
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var m channelRequestSuccessMsg
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if err := Unmarshal(b, &m); err == nil {
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t.Fatalf("unmarshal of empty slice succeeded")
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}
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}
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func TestUnmarshalUnexpectedPacket(t *testing.T) {
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type S struct {
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I uint32 `sshtype:"43"`
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S string
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B bool
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}
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s := S{11, "hello", true}
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packet := Marshal(s)
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packet[0] = 42
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roundtrip := S{}
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err := Unmarshal(packet, &roundtrip)
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if err == nil {
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t.Fatal("expected error, not nil")
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}
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}
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func TestMarshalPtr(t *testing.T) {
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s := struct {
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S string
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}{"hello"}
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m1 := Marshal(s)
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m2 := Marshal(&s)
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if !bytes.Equal(m1, m2) {
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t.Errorf("got %q, want %q for marshaled pointer", m2, m1)
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}
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}
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func TestBareMarshalUnmarshal(t *testing.T) {
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type S struct {
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I uint32
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S string
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B bool
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}
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s := S{42, "hello", true}
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packet := Marshal(s)
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roundtrip := S{}
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Unmarshal(packet, &roundtrip)
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if !reflect.DeepEqual(s, roundtrip) {
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t.Errorf("got %#v, want %#v", roundtrip, s)
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}
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}
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func TestBareMarshal(t *testing.T) {
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type S2 struct {
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I uint32
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}
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s := S2{42}
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packet := Marshal(s)
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i, rest, ok := parseUint32(packet)
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if len(rest) > 0 || !ok {
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t.Errorf("parseInt(%q): parse error", packet)
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}
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if i != s.I {
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t.Errorf("got %d, want %d", i, s.I)
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}
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}
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func TestUnmarshalShortKexInitPacket(t *testing.T) {
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// This used to panic.
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// Issue 11348
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packet := []byte{0x14, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0xff, 0xff, 0xff, 0xff}
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kim := &kexInitMsg{}
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if err := Unmarshal(packet, kim); err == nil {
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t.Error("truncated packet unmarshaled without error")
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}
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}
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func TestMarshalMultiTag(t *testing.T) {
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var res struct {
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A uint32 `sshtype:"1|2"`
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}
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good1 := struct {
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A uint32 `sshtype:"1"`
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}{
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1,
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}
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good2 := struct {
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A uint32 `sshtype:"2"`
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}{
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1,
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}
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if e := Unmarshal(Marshal(good1), &res); e != nil {
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t.Errorf("error unmarshaling multipart tag: %v", e)
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}
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if e := Unmarshal(Marshal(good2), &res); e != nil {
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t.Errorf("error unmarshaling multipart tag: %v", e)
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}
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bad1 := struct {
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A uint32 `sshtype:"3"`
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}{
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1,
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}
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if e := Unmarshal(Marshal(bad1), &res); e == nil {
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t.Errorf("bad struct unmarshaled without error")
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}
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}
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func randomBytes(out []byte, rand *rand.Rand) {
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for i := 0; i < len(out); i++ {
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out[i] = byte(rand.Int31())
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}
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}
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func randomNameList(rand *rand.Rand) []string {
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ret := make([]string, rand.Int31()&15)
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for i := range ret {
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s := make([]byte, 1+(rand.Int31()&15))
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for j := range s {
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s[j] = 'a' + uint8(rand.Int31()&15)
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}
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ret[i] = string(s)
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}
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return ret
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}
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func randomInt(rand *rand.Rand) *big.Int {
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return new(big.Int).SetInt64(int64(int32(rand.Uint32())))
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}
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func (*kexInitMsg) Generate(rand *rand.Rand, size int) reflect.Value {
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ki := &kexInitMsg{}
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randomBytes(ki.Cookie[:], rand)
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ki.KexAlgos = randomNameList(rand)
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ki.ServerHostKeyAlgos = randomNameList(rand)
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ki.CiphersClientServer = randomNameList(rand)
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ki.CiphersServerClient = randomNameList(rand)
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ki.MACsClientServer = randomNameList(rand)
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ki.MACsServerClient = randomNameList(rand)
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ki.CompressionClientServer = randomNameList(rand)
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ki.CompressionServerClient = randomNameList(rand)
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ki.LanguagesClientServer = randomNameList(rand)
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ki.LanguagesServerClient = randomNameList(rand)
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if rand.Int31()&1 == 1 {
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ki.FirstKexFollows = true
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}
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return reflect.ValueOf(ki)
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}
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func (*kexDHInitMsg) Generate(rand *rand.Rand, size int) reflect.Value {
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dhi := &kexDHInitMsg{}
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dhi.X = randomInt(rand)
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return reflect.ValueOf(dhi)
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}
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var (
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_kexInitMsg = new(kexInitMsg).Generate(rand.New(rand.NewSource(0)), 10).Elem().Interface()
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_kexDHInitMsg = new(kexDHInitMsg).Generate(rand.New(rand.NewSource(0)), 10).Elem().Interface()
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_kexInit = Marshal(_kexInitMsg)
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_kexDHInit = Marshal(_kexDHInitMsg)
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)
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func BenchmarkMarshalKexInitMsg(b *testing.B) {
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for i := 0; i < b.N; i++ {
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Marshal(_kexInitMsg)
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}
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}
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func BenchmarkUnmarshalKexInitMsg(b *testing.B) {
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m := new(kexInitMsg)
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for i := 0; i < b.N; i++ {
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Unmarshal(_kexInit, m)
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}
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}
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func BenchmarkMarshalKexDHInitMsg(b *testing.B) {
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for i := 0; i < b.N; i++ {
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Marshal(_kexDHInitMsg)
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}
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}
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func BenchmarkUnmarshalKexDHInitMsg(b *testing.B) {
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m := new(kexDHInitMsg)
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for i := 0; i < b.N; i++ {
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Unmarshal(_kexDHInit, m)
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}
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}
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