bagage/internal/encoding/ssh/filexfer/extended_packets_test.go

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2021-11-19 18:54:49 +00:00
package filexfer
import (
"bytes"
"testing"
)
type testExtendedData struct {
value uint8
}
func (d *testExtendedData) MarshalBinary() ([]byte, error) {
buf := NewBuffer(make([]byte, 0, 4))
buf.AppendUint8(d.value ^ 0x2a)
return buf.Bytes(), nil
}
func (d *testExtendedData) UnmarshalBinary(data []byte) error {
buf := NewBuffer(data)
v, err := buf.ConsumeUint8()
if err != nil {
return err
}
d.value = v ^ 0x2a
return nil
}
var _ Packet = &ExtendedPacket{}
func TestExtendedPacketNoData(t *testing.T) {
const (
id = 42
extendedRequest = "foo@example"
)
p := &ExtendedPacket{
ExtendedRequest: extendedRequest,
}
buf, err := ComposePacket(p.MarshalPacket(id, nil))
if err != nil {
t.Fatal("unexpected error:", err)
}
want := []byte{
0x00, 0x00, 0x00, 20,
200,
0x00, 0x00, 0x00, 42,
0x00, 0x00, 0x00, 11, 'f', 'o', 'o', '@', 'e', 'x', 'a', 'm', 'p', 'l', 'e',
}
if !bytes.Equal(buf, want) {
t.Fatalf("MarshalPacket() = %X, but wanted %X", buf, want)
}
*p = ExtendedPacket{}
// UnmarshalPacketBody assumes the (length, type, request-id) have already been consumed.
if err := p.UnmarshalPacketBody(NewBuffer(buf[9:])); err != nil {
t.Fatal("unexpected error:", err)
}
if p.ExtendedRequest != extendedRequest {
t.Errorf("UnmarshalPacketBody(): ExtendedRequest was %q, but expected %q", p.ExtendedRequest, extendedRequest)
}
}
func TestExtendedPacketTestData(t *testing.T) {
const (
id = 42
extendedRequest = "foo@example"
textValue = 13
)
const value = 13
p := &ExtendedPacket{
ExtendedRequest: extendedRequest,
Data: &testExtendedData{
value: textValue,
},
}
buf, err := ComposePacket(p.MarshalPacket(id, nil))
if err != nil {
t.Fatal("unexpected error:", err)
}
want := []byte{
0x00, 0x00, 0x00, 21,
200,
0x00, 0x00, 0x00, 42,
0x00, 0x00, 0x00, 11, 'f', 'o', 'o', '@', 'e', 'x', 'a', 'm', 'p', 'l', 'e',
0x27,
}
if !bytes.Equal(buf, want) {
t.Fatalf("MarshalPacket() = %X, but wanted %X", buf, want)
}
*p = ExtendedPacket{
Data: new(testExtendedData),
}
// UnmarshalPacketBody assumes the (length, type, request-id) have already been consumed.
if err := p.UnmarshalPacketBody(NewBuffer(buf[9:])); err != nil {
t.Fatal("unexpected error:", err)
}
if p.ExtendedRequest != extendedRequest {
t.Errorf("UnmarshalPacketBody(): ExtendedRequest was %q, but expected %q", p.ExtendedRequest, extendedRequest)
}
if buf, ok := p.Data.(*testExtendedData); !ok {
t.Errorf("UnmarshalPacketBody(): Data was type %T, but expected %T", p.Data, buf)
} else if buf.value != value {
t.Errorf("UnmarshalPacketBody(): Data.value was %#x, but expected %#x", buf.value, value)
}
*p = ExtendedPacket{}
// UnmarshalPacketBody assumes the (length, type, request-id) have already been consumed.
if err := p.UnmarshalPacketBody(NewBuffer(buf[9:])); err != nil {
t.Fatal("unexpected error:", err)
}
if p.ExtendedRequest != extendedRequest {
t.Errorf("UnmarshalPacketBody(): ExtendedRequest was %q, but expected %q", p.ExtendedRequest, extendedRequest)
}
wantBuffer := []byte{0x27}
if buf, ok := p.Data.(*Buffer); !ok {
t.Errorf("UnmarshalPacketBody(): Data was type %T, but expected %T", p.Data, buf)
} else if !bytes.Equal(buf.b, wantBuffer) {
t.Errorf("UnmarshalPacketBody(): Data was %X, but expected %X", buf.b, wantBuffer)
}
}
var _ Packet = &ExtendedReplyPacket{}
func TestExtendedReplyNoData(t *testing.T) {
const (
id = 42
)
p := &ExtendedReplyPacket{}
buf, err := ComposePacket(p.MarshalPacket(id, nil))
if err != nil {
t.Fatal("unexpected error:", err)
}
want := []byte{
0x00, 0x00, 0x00, 5,
201,
0x00, 0x00, 0x00, 42,
}
if !bytes.Equal(buf, want) {
t.Fatalf("MarshalPacket() = %X, but wanted %X", buf, want)
}
*p = ExtendedReplyPacket{}
// UnmarshalPacketBody assumes the (length, type, request-id) have already been consumed.
if err := p.UnmarshalPacketBody(NewBuffer(buf[9:])); err != nil {
t.Fatal("unexpected error:", err)
}
}
func TestExtendedReplyPacketTestData(t *testing.T) {
const (
id = 42
textValue = 13
)
const value = 13
p := &ExtendedReplyPacket{
Data: &testExtendedData{
value: textValue,
},
}
buf, err := ComposePacket(p.MarshalPacket(id, nil))
if err != nil {
t.Fatal("unexpected error:", err)
}
want := []byte{
0x00, 0x00, 0x00, 6,
201,
0x00, 0x00, 0x00, 42,
0x27,
}
if !bytes.Equal(buf, want) {
t.Fatalf("MarshalPacket() = %X, but wanted %X", buf, want)
}
*p = ExtendedReplyPacket{
Data: new(testExtendedData),
}
// UnmarshalPacketBody assumes the (length, type, request-id) have already been consumed.
if err := p.UnmarshalPacketBody(NewBuffer(buf[9:])); err != nil {
t.Fatal("unexpected error:", err)
}
if buf, ok := p.Data.(*testExtendedData); !ok {
t.Errorf("UnmarshalPacketBody(): Data was type %T, but expected %T", p.Data, buf)
} else if buf.value != value {
t.Errorf("UnmarshalPacketBody(): Data.value was %#x, but expected %#x", buf.value, value)
}
*p = ExtendedReplyPacket{}
// UnmarshalPacketBody assumes the (length, type, request-id) have already been consumed.
if err := p.UnmarshalPacketBody(NewBuffer(buf[9:])); err != nil {
t.Fatal("unexpected error:", err)
}
wantBuffer := []byte{0x27}
if buf, ok := p.Data.(*Buffer); !ok {
t.Errorf("UnmarshalPacketBody(): Data was type %T, but expected %T", p.Data, buf)
} else if !bytes.Equal(buf.b, wantBuffer) {
t.Errorf("UnmarshalPacketBody(): Data was %X, but expected %X", buf.b, wantBuffer)
}
}