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