// Copyright 2015 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 icmp_test
import (
"fmt"
"net"
"reflect"
"testing"
"golang.org/x/net/icmp"
"golang.org/x/net/internal/iana"
"golang.org/x/net/ipv4"
"golang.org/x/net/ipv6"
)
var marshalAndParseMultipartMessageForIPv4Tests = []icmp.Message{
{
Type: ipv4.ICMPTypeDestinationUnreachable, Code: 15,
Body: &icmp.DstUnreach{
Data: []byte("ERROR-INVOKING-PACKET"),
Extensions: []icmp.Extension{
&icmp.MPLSLabelStack{
Class: 1,
Type: 1,
Labels: []icmp.MPLSLabel{
{
Label: 16014,
TC: 0x4,
S: true,
TTL: 255,
},
},
},
&icmp.InterfaceInfo{
Class: 2,
Type: 0x0f,
Interface: &net.Interface{
Index: 15,
Name: "en101",
MTU: 8192,
},
Addr: &net.IPAddr{
IP: net.IPv4(192, 168, 0, 1).To4(),
},
},
},
},
},
{
Type: ipv4.ICMPTypeTimeExceeded, Code: 1,
Body: &icmp.TimeExceeded{
Data: []byte("ERROR-INVOKING-PACKET"),
Extensions: []icmp.Extension{
&icmp.InterfaceInfo{
Class: 2,
Type: 0x0f,
Interface: &net.Interface{
Index: 15,
Name: "en101",
MTU: 8192,
},
Addr: &net.IPAddr{
IP: net.IPv4(192, 168, 0, 1).To4(),
},
},
&icmp.MPLSLabelStack{
Class: 1,
Type: 1,
Labels: []icmp.MPLSLabel{
{
Label: 16014,
TC: 0x4,
S: true,
TTL: 255,
},
},
},
},
},
},
{
Type: ipv4.ICMPTypeParameterProblem, Code: 2,
Body: &icmp.ParamProb{
Pointer: 8,
Data: []byte("ERROR-INVOKING-PACKET"),
Extensions: []icmp.Extension{
&icmp.MPLSLabelStack{
Class: 1,
Type: 1,
Labels: []icmp.MPLSLabel{
{
Label: 16014,
TC: 0x4,
S: true,
TTL: 255,
},
},
},
&icmp.InterfaceInfo{
Class: 2,
Type: 0x0f,
Interface: &net.Interface{
Index: 15,
Name: "en101",
MTU: 8192,
},
Addr: &net.IPAddr{
IP: net.IPv4(192, 168, 0, 1).To4(),
},
},
&icmp.InterfaceInfo{
Class: 2,
Type: 0x2f,
Interface: &net.Interface{
Index: 16,
Name: "en102",
MTU: 8192,
},
Addr: &net.IPAddr{
IP: net.IPv4(192, 168, 0, 2).To4(),
},
},
},
},
},
}
func TestMarshalAndParseMultipartMessageForIPv4(t *testing.T) {
for i, tt := range marshalAndParseMultipartMessageForIPv4Tests {
b, err := tt.Marshal(nil)
if err != nil {
t.Fatal(err)
}
if b[5] != 32 {
t.Errorf("#%v: got %v; want 32", i, b[5])
}
m, err := icmp.ParseMessage(iana.ProtocolICMP, b)
if err != nil {
t.Fatal(err)
}
if m.Type != tt.Type || m.Code != tt.Code {
t.Errorf("#%v: got %v; want %v", i, m, &tt)
}
switch m.Type {
case ipv4.ICMPTypeDestinationUnreachable:
got, want := m.Body.(*icmp.DstUnreach), tt.Body.(*icmp.DstUnreach)
if !reflect.DeepEqual(got.Extensions, want.Extensions) {
t.Error(dumpExtensions(i, got.Extensions, want.Extensions))
}
if len(got.Data) != 128 {
t.Errorf("#%v: got %v; want 128", i, len(got.Data))
}
case ipv4.ICMPTypeTimeExceeded:
got, want := m.Body.(*icmp.TimeExceeded), tt.Body.(*icmp.TimeExceeded)
if !reflect.DeepEqual(got.Extensions, want.Extensions) {
t.Error(dumpExtensions(i, got.Extensions, want.Extensions))
}
if len(got.Data) != 128 {
t.Errorf("#%v: got %v; want 128", i, len(got.Data))
}
case ipv4.ICMPTypeParameterProblem:
got, want := m.Body.(*icmp.ParamProb), tt.Body.(*icmp.ParamProb)
if !reflect.DeepEqual(got.Extensions, want.Extensions) {
t.Error(dumpExtensions(i, got.Extensions, want.Extensions))
}
if len(got.Data) != 128 {
t.Errorf("#%v: got %v; want 128", i, len(got.Data))
}
}
}
}
var marshalAndParseMultipartMessageForIPv6Tests = []icmp.Message{
{
Type: ipv6.ICMPTypeDestinationUnreachable, Code: 6,
Body: &icmp.DstUnreach{
Data: []byte("ERROR-INVOKING-PACKET"),
Extensions: []icmp.Extension{
&icmp.MPLSLabelStack{
Class: 1,
Type: 1,
Labels: []icmp.MPLSLabel{
{
Label: 16014,
TC: 0x4,
S: true,
TTL: 255,
},
},
},
&icmp.InterfaceInfo{
Class: 2,
Type: 0x0f,
Interface: &net.Interface{
Index: 15,
Name: "en101",
MTU: 8192,
},
Addr: &net.IPAddr{
IP: net.ParseIP("fe80::1"),
Zone: "en101",
},
},
},
},
},
{
Type: ipv6.ICMPTypeTimeExceeded, Code: 1,
Body: &icmp.TimeExceeded{
Data: []byte("ERROR-INVOKING-PACKET"),
Extensions: []icmp.Extension{
&icmp.InterfaceInfo{
Class: 2,
Type: 0x0f,
Interface: &net.Interface{
Index: 15,
Name: "en101",
MTU: 8192,
},
Addr: &net.IPAddr{
IP: net.ParseIP("fe80::1"),
Zone: "en101",
},
},
&icmp.MPLSLabelStack{
Class: 1,
Type: 1,
Labels: []icmp.MPLSLabel{
{
Label: 16014,
TC: 0x4,
S: true,
TTL: 255,
},
},
},
&icmp.InterfaceInfo{
Class: 2,
Type: 0x2f,
Interface: &net.Interface{
Index: 16,
Name: "en102",
MTU: 8192,
},
Addr: &net.IPAddr{
IP: net.ParseIP("fe80::1"),
Zone: "en102",
},
},
},
},
},
}
func TestMarshalAndParseMultipartMessageForIPv6(t *testing.T) {
pshicmp := icmp.IPv6PseudoHeader(net.ParseIP("fe80::1"), net.ParseIP("ff02::1"))
for i, tt := range marshalAndParseMultipartMessageForIPv6Tests {
for _, psh := range [][]byte{pshicmp, nil} {
b, err := tt.Marshal(psh)
if err != nil {
t.Fatal(err)
}
if b[4] != 16 {
t.Errorf("#%v: got %v; want 16", i, b[4])
}
m, err := icmp.ParseMessage(iana.ProtocolIPv6ICMP, b)
if err != nil {
t.Fatal(err)
}
if m.Type != tt.Type || m.Code != tt.Code {
t.Errorf("#%v: got %v; want %v", i, m, &tt)
}
switch m.Type {
case ipv6.ICMPTypeDestinationUnreachable:
got, want := m.Body.(*icmp.DstUnreach), tt.Body.(*icmp.DstUnreach)
if !reflect.DeepEqual(got.Extensions, want.Extensions) {
t.Error(dumpExtensions(i, got.Extensions, want.Extensions))
}
if len(got.Data) != 128 {
t.Errorf("#%v: got %v; want 128", i, len(got.Data))
}
case ipv6.ICMPTypeTimeExceeded:
got, want := m.Body.(*icmp.TimeExceeded), tt.Body.(*icmp.TimeExceeded)
if !reflect.DeepEqual(got.Extensions, want.Extensions) {
t.Error(dumpExtensions(i, got.Extensions, want.Extensions))
}
if len(got.Data) != 128 {
t.Errorf("#%v: got %v; want 128", i, len(got.Data))
}
}
}
}
}
func dumpExtensions(i int, gotExts, wantExts []icmp.Extension) string {
var s string
for j, got := range gotExts {
switch got := got.(type) {
case *icmp.MPLSLabelStack:
want := wantExts[j].(*icmp.MPLSLabelStack)
if !reflect.DeepEqual(got, want) {
s += fmt.Sprintf("#%v/%v: got %#v; want %#v\n", i, j, got, want)
}
case *icmp.InterfaceInfo:
want := wantExts[j].(*icmp.InterfaceInfo)
if !reflect.DeepEqual(got, want) {
s += fmt.Sprintf("#%v/%v: got %#v, %#v, %#v; want %#v, %#v, %#v\n", i, j, got, got.Interface, got.Addr, want, want.Interface, want.Addr)
}
}
}
return s[:len(s)-1]
}
var multipartMessageBodyLenTests = []struct {
proto int
in icmp.MessageBody
out int
}{
{
iana.ProtocolICMP,
&icmp.DstUnreach{
Data: make([]byte, ipv4.HeaderLen),
},
4 + ipv4.HeaderLen, // unused and original datagram
},
{
iana.ProtocolICMP,
&icmp.TimeExceeded{
Data: make([]byte, ipv4.HeaderLen),
},
4 + ipv4.HeaderLen, // unused and original datagram
},
{
iana.ProtocolICMP,
&icmp.ParamProb{
Data: make([]byte, ipv4.HeaderLen),
},
4 + ipv4.HeaderLen, // [pointer, unused] and original datagram
},
{
iana.ProtocolICMP,
&icmp.ParamProb{
Data: make([]byte, ipv4.HeaderLen),
Extensions: []icmp.Extension{
&icmp.MPLSLabelStack{},
},
},
4 + 4 + 4 + 0 + 128, // [pointer, length, unused], extension header, object header, object payload, original datagram
},
{
iana.ProtocolICMP,
&icmp.ParamProb{
Data: make([]byte, 128),
Extensions: []icmp.Extension{
&icmp.MPLSLabelStack{},
},
},
4 + 4 + 4 + 0 + 128, // [pointer, length, unused], extension header, object header, object payload and original datagram
},
{
iana.ProtocolICMP,
&icmp.ParamProb{
Data: make([]byte, 129),
Extensions: []icmp.Extension{
&icmp.MPLSLabelStack{},
},
},
4 + 4 + 4 + 0 + 132, // [pointer, length, unused], extension header, object header, object payload and original datagram
},
{
iana.ProtocolIPv6ICMP,
&icmp.DstUnreach{
Data: make([]byte, ipv6.HeaderLen),
},
4 + ipv6.HeaderLen, // unused and original datagram
},
{
iana.ProtocolIPv6ICMP,
&icmp.PacketTooBig{
Data: make([]byte, ipv6.HeaderLen),
},
4 + ipv6.HeaderLen, // mtu and original datagram
},
{
iana.ProtocolIPv6ICMP,
&icmp.TimeExceeded{
Data: make([]byte, ipv6.HeaderLen),
},
4 + ipv6.HeaderLen, // unused and original datagram
},
{
iana.ProtocolIPv6ICMP,
&icmp.ParamProb{
Data: make([]byte, ipv6.HeaderLen),
},
4 + ipv6.HeaderLen, // pointer and original datagram
},
{
iana.ProtocolIPv6ICMP,
&icmp.DstUnreach{
Data: make([]byte, 127),
Extensions: []icmp.Extension{
&icmp.MPLSLabelStack{},
},
},
4 + 4 + 4 + 0 + 128, // [length, unused], extension header, object header, object payload and original datagram
},
{
iana.ProtocolIPv6ICMP,
&icmp.DstUnreach{
Data: make([]byte, 128),
Extensions: []icmp.Extension{
&icmp.MPLSLabelStack{},
},
},
4 + 4 + 4 + 0 + 128, // [length, unused], extension header, object header, object payload and original datagram
},
{
iana.ProtocolIPv6ICMP,
&icmp.DstUnreach{
Data: make([]byte, 129),
Extensions: []icmp.Extension{
&icmp.MPLSLabelStack{},
},
},
4 + 4 + 4 + 0 + 136, // [length, unused], extension header, object header, object payload and original datagram
},
}
func TestMultipartMessageBodyLen(t *testing.T) {
for i, tt := range multipartMessageBodyLenTests {
if out := tt.in.Len(tt.proto); out != tt.out {
t.Errorf("#%d: got %d; want %d", i, out, tt.out)
}
}
}
