Direct proxy works

_obfuscated2/frame_test.go

@@ -0,0 +1,106 @@
+package obfuscated2
+
+import (
+	"bytes"
+	"strconv"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+
+	"github.com/9seconds/mtg/mtproto"
+)
+
+func TestFrameKey(t *testing.T) {
+	toCompare := make([]byte, 32)
+	for i := 0; i < 32; i++ {
+		toCompare[i] = byte(1)
+	}
+
+	assert.Equal(t, toCompare, makeFrame().Key())
+}
+
+func TestFrameIV(t *testing.T) {
+	toCompare := make([]byte, 16)
+	for i := 0; i < 16; i++ {
+		toCompare[i] = byte(2)
+	}
+
+	assert.Equal(t, toCompare, makeFrame().IV())
+}
+
+func TestFrameMagic(t *testing.T) {
+	toCompare := make([]byte, 4)
+	for i := 0; i < 4; i++ {
+		toCompare[i] = 0xee
+	}
+
+	assert.Equal(t, toCompare, makeFrame().Magic())
+}
+
+func TestFrameDC(t *testing.T) {
+	assert.Equal(t, int16(771), makeFrame().DC())
+}
+
+func TestFrameValid(t *testing.T) {
+	frame := makeFrame()
+	connType, err := frame.ConnectionType()
+	assert.Nil(t, err)
+	assert.Equal(t, connType, mtproto.ConnectionTypeIntermediate)
+
+	frame[8+32+16+2] = byte(3)
+	_, err = frame.ConnectionType()
+	assert.NotNil(t, err)
+}
+
+func TestFrameDoubleInvert(t *testing.T) {
+	frame := makeFrame()
+	assert.True(t, bytes.Equal(frame, frame.Invert().Invert()))
+}
+
+func TestFrameInvert(t *testing.T) {
+	frame := makeFrame()
+	reversed := frame.Invert()
+
+	assert.Exactly(t, frame[:8], reversed[:8])
+	assert.Exactly(t, frame[56:], reversed[56:])
+
+	toCompare := make([]byte, 48)
+	for i := 0; i < 48; i++ {
+		toCompare[i] = frame[55-i]
+	}
+	assert.Equal(t, []byte(reversed[8:56]), toCompare)
+}
+
+func TestFrameGenerateValid(t *testing.T) {
+	validTests := []mtproto.ConnectionType{
+		mtproto.ConnectionTypeIntermediate,
+		mtproto.ConnectionTypeAbridged,
+	}
+	for _, test := range validTests {
+		t.Run(strconv.Itoa(int(test)), func(tt *testing.T) {
+			frame := generateFrame(test) // nolint: scopelint
+			conType, err := frame.ConnectionType()
+			assert.Nil(tt, err)
+			assert.Equal(tt, conType, test) // nolint: scopelint
+		})
+	}
+}
+
+func makeFrame() Frame {
+	f := make(Frame, FrameLen)
+
+	for i := 8; i < (8 + 32); i++ {
+		f[i] = byte(1)
+	}
+	for i := (8 + 32); i < (8 + 32 + 16); i++ {
+		f[i] = byte(2)
+	}
+	for i := (8 + 32 + 16); i < (8 + 32 + 16 + 4); i++ {
+		f[i] = 0xee
+	}
+	for i := (8 + 32 + 16 + 4); i < (8 + 32 + 16 + 4 + 2); i++ {
+		f[i] = byte(3)
+	}
+
+	return f
+}