mirror of
https://github.com/Luzifer/repo-template.git
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216 lines
5 KiB
Go
216 lines
5 KiB
Go
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// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package proxy
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import (
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"bytes"
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"fmt"
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"io"
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"net"
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"net/url"
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"os"
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"strconv"
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"strings"
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"sync"
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"testing"
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)
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type proxyFromEnvTest struct {
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allProxyEnv string
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noProxyEnv string
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wantTypeOf Dialer
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}
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func (t proxyFromEnvTest) String() string {
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var buf bytes.Buffer
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space := func() {
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if buf.Len() > 0 {
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buf.WriteByte(' ')
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}
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}
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if t.allProxyEnv != "" {
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fmt.Fprintf(&buf, "all_proxy=%q", t.allProxyEnv)
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}
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if t.noProxyEnv != "" {
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space()
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fmt.Fprintf(&buf, "no_proxy=%q", t.noProxyEnv)
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}
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return strings.TrimSpace(buf.String())
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}
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func TestFromEnvironment(t *testing.T) {
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ResetProxyEnv()
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type dummyDialer struct {
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direct
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}
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RegisterDialerType("irc", func(_ *url.URL, _ Dialer) (Dialer, error) {
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return dummyDialer{}, nil
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})
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proxyFromEnvTests := []proxyFromEnvTest{
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{allProxyEnv: "127.0.0.1:8080", noProxyEnv: "localhost, 127.0.0.1", wantTypeOf: direct{}},
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{allProxyEnv: "ftp://example.com:8000", noProxyEnv: "localhost, 127.0.0.1", wantTypeOf: direct{}},
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{allProxyEnv: "socks5://example.com:8080", noProxyEnv: "localhost, 127.0.0.1", wantTypeOf: &PerHost{}},
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{allProxyEnv: "irc://example.com:8000", wantTypeOf: dummyDialer{}},
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{noProxyEnv: "localhost, 127.0.0.1", wantTypeOf: direct{}},
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{wantTypeOf: direct{}},
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}
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for _, tt := range proxyFromEnvTests {
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os.Setenv("ALL_PROXY", tt.allProxyEnv)
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os.Setenv("NO_PROXY", tt.noProxyEnv)
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ResetCachedEnvironment()
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d := FromEnvironment()
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if got, want := fmt.Sprintf("%T", d), fmt.Sprintf("%T", tt.wantTypeOf); got != want {
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t.Errorf("%v: got type = %T, want %T", tt, d, tt.wantTypeOf)
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}
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}
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}
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func TestFromURL(t *testing.T) {
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endSystem, err := net.Listen("tcp", "127.0.0.1:0")
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if err != nil {
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t.Fatalf("net.Listen failed: %v", err)
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}
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defer endSystem.Close()
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gateway, err := net.Listen("tcp", "127.0.0.1:0")
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if err != nil {
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t.Fatalf("net.Listen failed: %v", err)
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}
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defer gateway.Close()
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var wg sync.WaitGroup
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wg.Add(1)
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go socks5Gateway(t, gateway, endSystem, socks5Domain, &wg)
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url, err := url.Parse("socks5://user:password@" + gateway.Addr().String())
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if err != nil {
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t.Fatalf("url.Parse failed: %v", err)
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}
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proxy, err := FromURL(url, Direct)
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if err != nil {
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t.Fatalf("FromURL failed: %v", err)
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}
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_, port, err := net.SplitHostPort(endSystem.Addr().String())
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if err != nil {
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t.Fatalf("net.SplitHostPort failed: %v", err)
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}
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if c, err := proxy.Dial("tcp", "localhost:"+port); err != nil {
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t.Fatalf("FromURL.Dial failed: %v", err)
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} else {
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c.Close()
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}
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wg.Wait()
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}
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func TestSOCKS5(t *testing.T) {
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endSystem, err := net.Listen("tcp", "127.0.0.1:0")
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if err != nil {
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t.Fatalf("net.Listen failed: %v", err)
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}
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defer endSystem.Close()
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gateway, err := net.Listen("tcp", "127.0.0.1:0")
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if err != nil {
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t.Fatalf("net.Listen failed: %v", err)
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}
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defer gateway.Close()
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var wg sync.WaitGroup
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wg.Add(1)
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go socks5Gateway(t, gateway, endSystem, socks5IP4, &wg)
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proxy, err := SOCKS5("tcp", gateway.Addr().String(), nil, Direct)
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if err != nil {
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t.Fatalf("SOCKS5 failed: %v", err)
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}
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if c, err := proxy.Dial("tcp", endSystem.Addr().String()); err != nil {
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t.Fatalf("SOCKS5.Dial failed: %v", err)
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} else {
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c.Close()
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}
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wg.Wait()
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}
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func socks5Gateway(t *testing.T, gateway, endSystem net.Listener, typ byte, wg *sync.WaitGroup) {
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defer wg.Done()
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c, err := gateway.Accept()
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if err != nil {
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t.Errorf("net.Listener.Accept failed: %v", err)
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return
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}
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defer c.Close()
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b := make([]byte, 32)
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var n int
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if typ == socks5Domain {
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n = 4
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} else {
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n = 3
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}
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if _, err := io.ReadFull(c, b[:n]); err != nil {
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t.Errorf("io.ReadFull failed: %v", err)
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return
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}
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if _, err := c.Write([]byte{socks5Version, socks5AuthNone}); err != nil {
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t.Errorf("net.Conn.Write failed: %v", err)
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return
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}
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if typ == socks5Domain {
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n = 16
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} else {
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n = 10
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}
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if _, err := io.ReadFull(c, b[:n]); err != nil {
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t.Errorf("io.ReadFull failed: %v", err)
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return
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}
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if b[0] != socks5Version || b[1] != socks5Connect || b[2] != 0x00 || b[3] != typ {
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t.Errorf("got an unexpected packet: %#02x %#02x %#02x %#02x", b[0], b[1], b[2], b[3])
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return
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}
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if typ == socks5Domain {
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copy(b[:5], []byte{socks5Version, 0x00, 0x00, socks5Domain, 9})
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b = append(b, []byte("localhost")...)
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} else {
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copy(b[:4], []byte{socks5Version, 0x00, 0x00, socks5IP4})
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}
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host, port, err := net.SplitHostPort(endSystem.Addr().String())
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if err != nil {
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t.Errorf("net.SplitHostPort failed: %v", err)
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return
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}
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b = append(b, []byte(net.ParseIP(host).To4())...)
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p, err := strconv.Atoi(port)
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if err != nil {
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t.Errorf("strconv.Atoi failed: %v", err)
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return
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}
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b = append(b, []byte{byte(p >> 8), byte(p)}...)
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if _, err := c.Write(b); err != nil {
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t.Errorf("net.Conn.Write failed: %v", err)
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return
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}
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}
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func ResetProxyEnv() {
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for _, env := range []*envOnce{allProxyEnv, noProxyEnv} {
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for _, v := range env.names {
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os.Setenv(v, "")
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}
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}
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ResetCachedEnvironment()
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}
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func ResetCachedEnvironment() {
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allProxyEnv.reset()
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noProxyEnv.reset()
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}
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