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/
mse_test.go
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/
mse_test.go
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package mse_test
import (
"bytes"
"encoding/hex"
"errors"
"fmt"
"io"
"testing"
"github.com/cenkalti/mse"
)
// Pipe2 is a bidirectional io.Pipe.
type Pipe2 struct {
r *io.PipeReader
w *io.PipeWriter
}
func (p *Pipe2) Read(b []byte) (n int, err error) {
return p.r.Read(b)
}
func (p *Pipe2) Write(b []byte) (n int, err error) {
return p.w.Write(b)
}
func (p *Pipe2) Close() error {
p.r.Close()
p.w.Close()
return nil
}
func NewPipe2() (*Pipe2, *Pipe2) {
var a, b Pipe2
a.r, b.w = io.Pipe()
b.r, a.w = io.Pipe()
return &a, &b
}
func TestPipe2(t *testing.T) {
a, b := NewPipe2()
err := testRws(a, b)
if err != nil {
t.Fatal(err)
}
}
func TestStream(t *testing.T) {
conn1, conn2 := NewPipe2()
a := mse.NewStream(conn1)
b := mse.NewStream(conn2)
sKey := []byte("1234")
payloadA := []byte("payloadA")
payloadB := []byte("payloadB")
payloadARead := make([]byte, 8)
payloadBRead := make([]byte, 8)
var n uint16
go func() {
_, err := a.HandshakeOutgoing(sKey, mse.RC4, payloadA)
if err != nil {
t.Fatal(err)
}
_, err = io.ReadFull(a, payloadBRead)
if err != nil {
t.Fatal(err)
}
}()
err := b.HandshakeIncoming(
func(sKeyHash [20]byte) []byte {
if sKeyHash == mse.HashSKey(sKey) {
return sKey
}
return nil
},
func(provided mse.CryptoMethod) (selected mse.CryptoMethod) {
if provided == mse.RC4 {
selected = mse.RC4
}
return
},
payloadARead, &n,
func() ([]byte, error) {
if !bytes.Equal(payloadARead[:n], payloadA) {
return nil, errors.New("invalid payload A")
}
return payloadB, nil
})
if err != nil {
t.Fatal(err)
}
if !bytes.Equal(payloadB, payloadBRead) {
t.Fatal("invalid payload B")
}
err = testRws(a, b)
if err != nil {
t.Fatal(err)
}
}
func testRws(a, b io.ReadWriter) error {
data := []byte("ABCD")
go a.Write(data)
buf := make([]byte, 10)
n, err := b.Read(buf)
if err != nil {
return err
}
if n != 4 {
return fmt.Errorf("n must be 4, not %d", n)
}
if !bytes.Equal(buf[:n], data) {
return fmt.Errorf("invalid data received: %s", hex.EncodeToString(buf[:n]))
}
return nil
}