/usr/share/gocode/src/golang.org/x/crypto/ssh/test/forward_unix_test.go is in golang-golang-x-crypto-dev 1:0.0~git20170629.0.5ef0053-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 | // Copyright 2012 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.
// +build darwin dragonfly freebsd linux netbsd openbsd
package test
import (
"bytes"
"io"
"io/ioutil"
"math/rand"
"net"
"testing"
"time"
)
type closeWriter interface {
CloseWrite() error
}
func testPortForward(t *testing.T, n, listenAddr string) {
server := newServer(t)
defer server.Shutdown()
conn := server.Dial(clientConfig())
defer conn.Close()
sshListener, err := conn.Listen(n, listenAddr)
if err != nil {
t.Fatal(err)
}
go func() {
sshConn, err := sshListener.Accept()
if err != nil {
t.Fatalf("listen.Accept failed: %v", err)
}
_, err = io.Copy(sshConn, sshConn)
if err != nil && err != io.EOF {
t.Fatalf("ssh client copy: %v", err)
}
sshConn.Close()
}()
forwardedAddr := sshListener.Addr().String()
netConn, err := net.Dial(n, forwardedAddr)
if err != nil {
t.Fatalf("net dial failed: %v", err)
}
readChan := make(chan []byte)
go func() {
data, _ := ioutil.ReadAll(netConn)
readChan <- data
}()
// Invent some data.
data := make([]byte, 100*1000)
for i := range data {
data[i] = byte(i % 255)
}
var sent []byte
for len(sent) < 1000*1000 {
// Send random sized chunks
m := rand.Intn(len(data))
n, err := netConn.Write(data[:m])
if err != nil {
break
}
sent = append(sent, data[:n]...)
}
if err := netConn.(closeWriter).CloseWrite(); err != nil {
t.Errorf("netConn.CloseWrite: %v", err)
}
read := <-readChan
if len(sent) != len(read) {
t.Fatalf("got %d bytes, want %d", len(read), len(sent))
}
if bytes.Compare(sent, read) != 0 {
t.Fatalf("read back data does not match")
}
if err := sshListener.Close(); err != nil {
t.Fatalf("sshListener.Close: %v", err)
}
// Check that the forward disappeared.
netConn, err = net.Dial(n, forwardedAddr)
if err == nil {
netConn.Close()
t.Errorf("still listening to %s after closing", forwardedAddr)
}
}
func TestPortForwardTCP(t *testing.T) {
testPortForward(t, "tcp", "localhost:0")
}
func TestPortForwardUnix(t *testing.T) {
addr, cleanup := newTempSocket(t)
defer cleanup()
testPortForward(t, "unix", addr)
}
func testAcceptClose(t *testing.T, n, listenAddr string) {
server := newServer(t)
defer server.Shutdown()
conn := server.Dial(clientConfig())
sshListener, err := conn.Listen(n, listenAddr)
if err != nil {
t.Fatal(err)
}
quit := make(chan error, 1)
go func() {
for {
c, err := sshListener.Accept()
if err != nil {
quit <- err
break
}
c.Close()
}
}()
sshListener.Close()
select {
case <-time.After(1 * time.Second):
t.Errorf("timeout: listener did not close.")
case err := <-quit:
t.Logf("quit as expected (error %v)", err)
}
}
func TestAcceptCloseTCP(t *testing.T) {
testAcceptClose(t, "tcp", "localhost:0")
}
func TestAcceptCloseUnix(t *testing.T) {
addr, cleanup := newTempSocket(t)
defer cleanup()
testAcceptClose(t, "unix", addr)
}
// Check that listeners exit if the underlying client transport dies.
func testPortForwardConnectionClose(t *testing.T, n, listenAddr string) {
server := newServer(t)
defer server.Shutdown()
conn := server.Dial(clientConfig())
sshListener, err := conn.Listen(n, listenAddr)
if err != nil {
t.Fatal(err)
}
quit := make(chan error, 1)
go func() {
for {
c, err := sshListener.Accept()
if err != nil {
quit <- err
break
}
c.Close()
}
}()
// It would be even nicer if we closed the server side, but it
// is more involved as the fd for that side is dup()ed.
server.clientConn.Close()
select {
case <-time.After(1 * time.Second):
t.Errorf("timeout: listener did not close.")
case err := <-quit:
t.Logf("quit as expected (error %v)", err)
}
}
func TestPortForwardConnectionCloseTCP(t *testing.T) {
testPortForwardConnectionClose(t, "tcp", "localhost:0")
}
func TestPortForwardConnectionCloseUnix(t *testing.T) {
addr, cleanup := newTempSocket(t)
defer cleanup()
testPortForwardConnectionClose(t, "unix", addr)
}
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