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socks5_test.go
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package socks5_test
import (
"crypto/tls"
"io"
"net"
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"golang.org/x/net/proxy"
"github.com/TuanKiri/socks5"
)
func TestProxyConnect(t *testing.T) {
t.Parallel()
testCases := map[string]struct {
proxyAddress string
proxyOpts []socks5.Option
destinationUrl string
clientCredentials *proxy.Auth
wait []byte
errString string
}{
"IPv4_address": {
proxyAddress: "127.0.0.1:1151",
proxyOpts: []socks5.Option{
socks5.WithLogger(socks5.NopLogger),
socks5.WithPort(1151),
},
destinationUrl: "http://127.0.0.1:5444/ping",
wait: []byte("pong!"),
},
"FQDN_address": {
proxyAddress: "127.0.0.1:1152",
proxyOpts: []socks5.Option{
socks5.WithLogger(socks5.NopLogger),
socks5.WithPort(1152),
},
destinationUrl: "http://localhost:5444/ping",
wait: []byte("pong!"),
},
"authenticate_by_username_password": {
proxyAddress: "127.0.0.1:1153",
proxyOpts: []socks5.Option{
socks5.WithLogger(socks5.NopLogger),
socks5.WithPort(1153),
socks5.WithPasswordAuthentication(),
},
destinationUrl: "http://localhost:5444/ping",
clientCredentials: &proxy.Auth{
User: "root",
Password: "password",
},
wait: []byte("pong!"),
},
"wrong_authenticate_by_username_password": {
proxyAddress: "127.0.0.1:1154",
proxyOpts: []socks5.Option{
socks5.WithLogger(socks5.NopLogger),
socks5.WithPort(1154),
socks5.WithPasswordAuthentication(),
socks5.WithStaticCredentials(map[string]string{
"root": "password123",
}),
},
destinationUrl: "http://localhost:5444",
clientCredentials: &proxy.Auth{
User: "root",
Password: "password",
},
errString: "Get \"http://localhost:5444\": socks connect " +
"tcp 127.0.0.1:1154->localhost:5444: username/password authentication failed",
},
"over_tls": {
proxyAddress: "127.0.0.1:1155",
proxyOpts: []socks5.Option{
socks5.WithLogger(socks5.NopLogger),
socks5.WithPort(1155),
socks5.WithDriver(&testTLSDriver{
tlsConfig: &tls.Config{
Certificates: []tls.Certificate{cert},
},
}),
},
destinationUrl: "https://localhost:6444/ping",
wait: []byte("pong!"),
},
"connection_refused": {
proxyAddress: "127.0.0.1:1156",
proxyOpts: []socks5.Option{
socks5.WithLogger(socks5.NopLogger),
socks5.WithPort(1156),
},
destinationUrl: "http://localhost:4000",
errString: "Get \"http://localhost:4000\": socks connect " +
"tcp 127.0.0.1:1156->localhost:4000: unknown error connection refused",
},
"IPv6_address": {
proxyAddress: "127.0.0.1:1157",
proxyOpts: []socks5.Option{
socks5.WithLogger(socks5.NopLogger),
socks5.WithPort(1157),
},
destinationUrl: "http://[::1]:5444/ping",
wait: []byte("pong!"),
},
"host_unreachable": {
proxyAddress: "127.0.0.1:1158",
proxyOpts: []socks5.Option{
socks5.WithLogger(socks5.NopLogger),
socks5.WithPort(1158),
},
destinationUrl: "http://no_such_host.test",
errString: "Get \"http://no_such_host.test\": socks connect " +
"tcp 127.0.0.1:1158->no_such_host.test:80: unknown error host unreachable",
},
"not_allowed_command": {
proxyAddress: "127.0.0.1:1159",
proxyOpts: []socks5.Option{
socks5.WithAllowCommands(),
socks5.WithLogger(socks5.NopLogger),
socks5.WithPort(1159),
},
destinationUrl: "http://localhost:4000",
errString: "Get \"http://localhost:4000\": socks connect " +
"tcp 127.0.0.1:1159->localhost:4000: unknown error connection not allowed by ruleset",
},
"not_allowed_host": {
proxyAddress: "127.0.0.1:1160",
proxyOpts: []socks5.Option{
socks5.WithLogger(socks5.NopLogger),
socks5.WithPort(1160),
socks5.WithBlockListHosts(
"www.google.com",
),
},
destinationUrl: "http://www.google.com",
errString: "Get \"http://www.google.com\": socks connect " +
"tcp 127.0.0.1:1160->www.google.com:80: unknown error connection not allowed by ruleset",
},
}
for name, tc := range testCases {
t.Run(name, func(t *testing.T) {
go runProxy(tc.proxyOpts...)
// Wait for socks5 proxy to start
time.Sleep(100 * time.Millisecond)
client, err := newHttpClient(tc.proxyAddress, tc.clientCredentials)
require.NoError(t, err)
response, err := client.Get(tc.destinationUrl)
if err != nil {
require.EqualError(t, err, tc.errString)
return
}
defer response.Body.Close()
body, err := io.ReadAll(response.Body)
require.NoError(t, err)
assert.Equal(t, tc.wait, body)
})
}
}
func TestProxyUDPAssociate(t *testing.T) {
testCase := struct {
handshake []byte
response []byte
request []byte
acceptRequest []byte
packets map[string][]byte
}{
handshake: []byte{
0x05, // version: 5
0x01, // number of methods: 1
0x00, // method: no authentication required
},
response: []byte{
0x05, // version: 5
0x00, // method: no authentication required
},
request: []byte{
0x05, // version: 5
0x03, // command: udp associate
0x00, // reserved byte
0x01, // address type: Ipv4
0x00, 0x00, 0x00, 0x00, // address: 0.0.0.0
0xB6, 0xD9, // port: 46809
},
acceptRequest: []byte{
0x05, // version: 5
0x00, // status: connection successful
0x00, // reserved byte
0x01, // address type: Ipv4
0x7F, 0x00, 0x00, 0x01, // address: 127.0.0.1
0xB6, 0xD9, // port: 46809
},
packets: map[string][]byte{
"IPv4_address": {
0x00, 0x00, // reserved 2 bytes
0x00, // current fragment number: 0
0x01, // address type: Ipv4
0x7F, 0x00, 0x00, 0x01, // address: 127.0.0.1
0x1D, 0x14, // port: 7444
0x48, 0x45, 0x6C, 0x6C, 0x6F, 0x20, 0x57, 0x4F, 0x52, 0x6C, 0x64, // payload: HEllo WORld
},
"FQDN_address": {
0x00, 0x00, // reserved 2 bytes
0x00, // current fragment number: 0
0x03, // address type: FQDN
0x09, // domain len: 9
0x6c, 0x6f, 0x63, 0x61, 0x6c, 0x68, 0x6f, 0x73, 0x74, // address: localhost
0x1D, 0x14, // port: 7444
0x48, 0x45, 0x6C, 0x6C, 0x6F, 0x20, 0x57, 0x4F, 0x52, 0x6C, 0x64, // payload: HEllo WORld
},
"IPv6_address": {
0x00, 0x00, // reserved 2 bytes
0x00, // current fragment number: 0
0x04, // address type: IPv6
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, // address: ::1
0x1D, 0x14, // port: 7444
0x48, 0x45, 0x6C, 0x6C, 0x6F, 0x20, 0x57, 0x4F, 0x52, 0x6C, 0x64, // payload: HEllo WORld
},
},
}
go runProxy(
socks5.WithLogger(socks5.NopLogger),
)
// Wait for socks5 proxy to start
time.Sleep(100 * time.Millisecond)
conn, err := net.Dial("tcp", ":1080")
require.NoError(t, err)
t.Cleanup(func() {
conn.Close()
})
_, err = conn.Write(testCase.handshake)
require.NoError(t, err)
response := make([]byte, 2)
_, err = conn.Read(response)
require.NoError(t, err)
require.Equal(t, testCase.response, response)
_, err = conn.Write(testCase.request)
require.NoError(t, err)
acceptRequest := make([]byte, 10)
_, err = conn.Read(acceptRequest)
require.NoError(t, err)
require.Equal(t, testCase.acceptRequest, acceptRequest)
udpConn, err := net.Dial("udp", ":46809")
require.NoError(t, err)
t.Cleanup(func() {
udpConn.Close()
})
for name, packet := range testCase.packets {
udpConn.SetWriteDeadline(time.Now().Add(200 * time.Millisecond))
_, err := udpConn.Write(packet)
require.NoErrorf(t, err, name)
udpConn.SetReadDeadline(time.Now().Add(200 * time.Millisecond))
response := make([]byte, len(packet))
_, err = udpConn.Read(response)
require.NoErrorf(t, err, name)
assert.Equalf(t, packet, response, name)
}
}