route/vendor/golang.org/x/net/proxy/proxy_test.go

216 lines
5.0 KiB
Go

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