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// Copyright 2014 Damjan Cvetko. All rights reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the LICENSE file in the root of the source
// tree.
package pcapgo
import (
"bytes"
"testing"
"time"
)
// test header read
func TestCreatePcapReader(t *testing.T) {
test := []byte{
0xd4, 0xc3, 0xb2, 0xa1, 0x02, 0x00, 0x04, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0xff, 0xff, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
}
buf := bytes.NewBuffer(test)
_, err := NewReader(buf)
if err != nil {
t.Error(err)
t.FailNow()
}
}
// test big endian file read
func TestCreatePcapReaderBigEndian(t *testing.T) {
test := []byte{
0xa1, 0xb2, 0xc3, 0xd4, 0x00, 0x02, 0x00, 0x04,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xff, 0xff, 0x00, 0x00, 0x00, 0x01,
}
buf := bytes.NewBuffer(test)
_, err := NewReader(buf)
if err != nil {
t.Error(err)
t.FailNow()
}
}
// test opening invalid data
func TestCreatePcapReaderFail(t *testing.T) {
test := []byte{
0xd0, 0xc3, 0xb2, 0xa1, 0x02, 0x00, 0x04, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0xff, 0xff, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
}
buf := bytes.NewBuffer(test)
_, err := NewReader(buf)
if err == nil {
t.Error("Should fail but did not")
t.FailNow()
}
}
func TestPacket(t *testing.T) {
test := []byte{
0xd4, 0xc3, 0xb2, 0xa1, 0x02, 0x00, 0x04, 0x00, // magic, maj, min
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // tz, sigfigs
0xff, 0xff, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, // snaplen, linkType
0x5A, 0xCC, 0x1A, 0x54, 0x01, 0x00, 0x00, 0x00, // sec, usec
0x04, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, // cap len, full len
0x01, 0x02, 0x03, 0x04, // data
}
buf := bytes.NewBuffer(test)
r, err := NewReader(buf)
data, ci, err := r.ReadPacketData()
if err != nil {
t.Error(err)
t.FailNow()
}
if !ci.Timestamp.Equal(time.Date(2014, 9, 18, 12, 13, 14, 1000, time.UTC)) {
t.Error("Invalid time read")
t.FailNow()
}
if ci.CaptureLength != 4 || ci.Length != 8 {
t.Error("Invalid CapLen or Len")
}
want := []byte{1, 2, 3, 4}
if !bytes.Equal(data, want) {
t.Errorf("buf mismatch:\nwant: %+v\ngot: %+v", want, data)
}
}
func TestPacketNano(t *testing.T) {
test := []byte{
0x4d, 0x3c, 0xb2, 0xa1, 0x02, 0x00, 0x04, 0x00, // magic, maj, min
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // tz, sigfigs
0xff, 0xff, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, // snaplen, linkType
0x5A, 0xCC, 0x1A, 0x54, 0x01, 0x00, 0x00, 0x00, // sec, usec
0x04, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, // cap len, full len
0x01, 0x02, 0x03, 0x04, // data
}
buf := bytes.NewBuffer(test)
r, err := NewReader(buf)
data, ci, err := r.ReadPacketData()
if err != nil {
t.Error(err)
t.FailNow()
}
if !ci.Timestamp.Equal(time.Date(2014, 9, 18, 12, 13, 14, 1, time.UTC)) {
t.Error("Invalid time read")
t.FailNow()
}
if ci.CaptureLength != 4 || ci.Length != 8 {
t.Error("Invalid CapLen or Len")
}
want := []byte{1, 2, 3, 4}
if !bytes.Equal(data, want) {
t.Errorf("buf mismatch:\nwant: %+v\ngot: %+v", want, data)
}
}
func TestGzipPacket(t *testing.T) {
test := []byte{
0x1f, 0x8b, 0x08, 0x08, 0x92, 0x4d, 0x81, 0x57,
0x00, 0x03, 0x74, 0x65, 0x73, 0x74, 0x00, 0xbb,
0x72, 0x78, 0xd3, 0x42, 0x26, 0x06, 0x16, 0x06,
0x18, 0xf8, 0xff, 0x9f, 0x81, 0x81, 0x11, 0x48,
0x47, 0x9d, 0x91, 0x0a, 0x01, 0xd1, 0x20, 0x19,
0x0e, 0x20, 0x66, 0x64, 0x62, 0x66, 0x01, 0x00,
0xe4, 0x76, 0x9b, 0x75, 0x2c, 0x00, 0x00, 0x00,
}
buf := bytes.NewBuffer(test)
r, err := NewReader(buf)
if err != nil {
t.Error("Unexpected error returned:", err)
t.FailNow()
}
data, ci, err := r.ReadPacketData()
if err != nil {
t.Error(err)
t.FailNow()
}
if !ci.Timestamp.Equal(time.Date(2014, 9, 18, 12, 13, 14, 1000, time.UTC)) {
t.Error("Invalid time read")
t.FailNow()
}
if ci.CaptureLength != 4 || ci.Length != 8 {
t.Error("Invalid CapLen or Len")
}
want := []byte{1, 2, 3, 4}
if !bytes.Equal(data, want) {
t.Errorf("buf mismatch:\nwant: %+v\ngot: %+v", want, data)
}
}
func TestTruncatedGzipPacket(t *testing.T) {
test := []byte{
0x1f, 0x8b, 0x08,
}
buf := bytes.NewBuffer(test)
_, err := NewReader(buf)
if err == nil {
t.Error("Should fail but did not")
t.FailNow()
}
}
func TestPacketBufferReuse(t *testing.T) {
test := []byte{
0xd4, 0xc3, 0xb2, 0xa1, 0x02, 0x00, 0x04, 0x00, // magic, maj, min
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // tz, sigfigs
0xff, 0xff, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, // snaplen, linkType
0x5A, 0xCC, 0x1A, 0x54, 0x01, 0x00, 0x00, 0x00, // sec, usec
0x04, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, // cap len, full len
0x01, 0x02, 0x03, 0x04, // data
0x5A, 0xCC, 0x1A, 0x54, 0x01, 0x00, 0x00, 0x00, // sec, usec
0x04, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, // cap len, full len
0x01, 0x02, 0x03, 0x04, // data
}
buf := bytes.NewBuffer(test)
r, err := NewReader(buf)
data1, _, err := r.ReadPacketData()
if err != nil {
t.Error(err)
t.FailNow()
}
if want := []byte{1, 2, 3, 4}; !bytes.Equal(data1, want) {
t.Errorf("buf mismatch:\nwant: %+v\ngot: %+v", want, data1)
}
data2, _, err := r.ReadPacketData()
if err != nil {
t.Error(err)
t.FailNow()
}
for i := range data1 {
data1[i] = 0xff // modify data1 after getting data2, make sure we don't overlap buffers.
}
if want := []byte{1, 2, 3, 4}; !bytes.Equal(data2, want) {
t.Errorf("buf mismatch:\nwant: %+v\ngot: %+v", want, data2)
}
}
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