83 lines
1.9 KiB
Go
83 lines
1.9 KiB
Go
// Copyright 2014 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
|
|
|
|
import (
|
|
"encoding/binary"
|
|
"net"
|
|
"reflect"
|
|
"runtime"
|
|
"testing"
|
|
|
|
"golang.org/x/net/internal/socket"
|
|
"golang.org/x/net/ipv4"
|
|
)
|
|
|
|
type ipv4HeaderTest struct {
|
|
wireHeaderFromKernel [ipv4.HeaderLen]byte
|
|
wireHeaderFromTradBSDKernel [ipv4.HeaderLen]byte
|
|
Header *ipv4.Header
|
|
}
|
|
|
|
var ipv4HeaderLittleEndianTest = ipv4HeaderTest{
|
|
// TODO(mikio): Add platform dependent wire header formats when
|
|
// we support new platforms.
|
|
wireHeaderFromKernel: [ipv4.HeaderLen]byte{
|
|
0x45, 0x01, 0xbe, 0xef,
|
|
0xca, 0xfe, 0x45, 0xdc,
|
|
0xff, 0x01, 0xde, 0xad,
|
|
172, 16, 254, 254,
|
|
192, 168, 0, 1,
|
|
},
|
|
wireHeaderFromTradBSDKernel: [ipv4.HeaderLen]byte{
|
|
0x45, 0x01, 0xef, 0xbe,
|
|
0xca, 0xfe, 0x45, 0xdc,
|
|
0xff, 0x01, 0xde, 0xad,
|
|
172, 16, 254, 254,
|
|
192, 168, 0, 1,
|
|
},
|
|
Header: &ipv4.Header{
|
|
Version: ipv4.Version,
|
|
Len: ipv4.HeaderLen,
|
|
TOS: 1,
|
|
TotalLen: 0xbeef,
|
|
ID: 0xcafe,
|
|
Flags: ipv4.DontFragment,
|
|
FragOff: 1500,
|
|
TTL: 255,
|
|
Protocol: 1,
|
|
Checksum: 0xdead,
|
|
Src: net.IPv4(172, 16, 254, 254),
|
|
Dst: net.IPv4(192, 168, 0, 1),
|
|
},
|
|
}
|
|
|
|
func TestParseIPv4Header(t *testing.T) {
|
|
tt := &ipv4HeaderLittleEndianTest
|
|
if socket.NativeEndian != binary.LittleEndian {
|
|
t.Skip("no test for non-little endian machine yet")
|
|
}
|
|
|
|
var wh []byte
|
|
switch runtime.GOOS {
|
|
case "darwin":
|
|
wh = tt.wireHeaderFromTradBSDKernel[:]
|
|
case "freebsd":
|
|
if freebsdVersion >= 1000000 {
|
|
wh = tt.wireHeaderFromKernel[:]
|
|
} else {
|
|
wh = tt.wireHeaderFromTradBSDKernel[:]
|
|
}
|
|
default:
|
|
wh = tt.wireHeaderFromKernel[:]
|
|
}
|
|
h, err := ParseIPv4Header(wh)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if !reflect.DeepEqual(h, tt.Header) {
|
|
t.Fatalf("got %#v; want %#v", h, tt.Header)
|
|
}
|
|
}
|