148 lines
2.9 KiB
Go
148 lines
2.9 KiB
Go
package socks5
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import (
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"bytes"
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"encoding/binary"
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"io"
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"log"
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"net"
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"os"
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"testing"
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"github.com/stretchr/testify/require"
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)
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type MockConn struct {
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buf bytes.Buffer
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}
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func (m *MockConn) Write(b []byte) (int, error) {
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return m.buf.Write(b)
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}
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func (m *MockConn) RemoteAddr() net.Addr {
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return &net.TCPAddr{IP: []byte{127, 0, 0, 1}, Port: 65432}
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}
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func TestRequest_Connect(t *testing.T) {
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// Create a local listener
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l, err := net.Listen("tcp", "127.0.0.1:0")
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require.NoError(t, err)
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go func() {
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conn, err := l.Accept()
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require.NoError(t, err)
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defer conn.Close()
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buf := make([]byte, 4)
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_, err = io.ReadAtLeast(conn, buf, 4)
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require.NoError(t, err)
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require.Equal(t, []byte("ping"), buf)
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conn.Write([]byte("pong")) // nolint: errcheck
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}()
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lAddr := l.Addr().(*net.TCPAddr)
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// Make server
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proxySrv := &Server{
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rules: NewPermitAll(),
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resolver: DNSResolver{},
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logger: NewLogger(log.New(os.Stdout, "socks5: ", log.LstdFlags)),
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bufferPool: newPool(32 * 1024),
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}
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// Create the connect request
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buf := bytes.NewBuffer(nil)
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buf.Write([]byte{5, 1, 0, 1, 127, 0, 0, 1}) // nolint: errcheck
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port := []byte{0, 0}
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binary.BigEndian.PutUint16(port, uint16(lAddr.Port))
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buf.Write(port) // nolint: errcheck
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// Send a ping
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buf.Write([]byte("ping")) // nolint: errcheck
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// Handle the request
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resp := &MockConn{}
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req, err := NewRequest(buf)
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require.NoError(t, err)
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err = proxySrv.handleRequest(resp, req)
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require.NoError(t, err)
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// Verify response
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out := resp.buf.Bytes()
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expected := []byte{
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5,
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0,
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0,
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1,
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127, 0, 0, 1,
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0, 0,
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'p', 'o', 'n', 'g',
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}
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// Ignore the port for both
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out[8] = 0
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out[9] = 0
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require.Equal(t, expected, out)
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}
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func TestRequest_Connect_RuleFail(t *testing.T) {
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// Create a local listener
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l, err := net.Listen("tcp", "127.0.0.1:0")
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require.NoError(t, err)
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go func() {
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conn, err := l.Accept()
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require.NoError(t, err)
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defer conn.Close()
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buf := make([]byte, 4)
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_, err = io.ReadAtLeast(conn, buf, 4)
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require.NoError(t, err)
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require.Equal(t, []byte("ping"), buf)
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conn.Write([]byte("pong")) // nolint: errcheck
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}()
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lAddr := l.Addr().(*net.TCPAddr)
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// Make server
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s := &Server{
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rules: NewPermitNone(),
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resolver: DNSResolver{},
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logger: NewLogger(log.New(os.Stdout, "socks5: ", log.LstdFlags)),
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bufferPool: newPool(32 * 1024),
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}
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// Create the connect request
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buf := bytes.NewBuffer(nil)
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buf.Write([]byte{5, 1, 0, 1, 127, 0, 0, 1})
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port := []byte{0, 0}
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binary.BigEndian.PutUint16(port, uint16(lAddr.Port))
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buf.Write(port)
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// Send a ping
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buf.Write([]byte("ping"))
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// Handle the request
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resp := &MockConn{}
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req, err := NewRequest(buf)
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require.NoError(t, err)
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err = s.handleRequest(resp, req)
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require.Contains(t, err.Error(), "blocked by rules")
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// Verify response
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out := resp.buf.Bytes()
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expected := []byte{
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5,
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2,
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0,
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1,
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0, 0, 0, 0,
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0, 0,
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}
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require.Equal(t, expected, out)
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}
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