net/socket/socks5_client_socket_unittest.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "net/socket/socks5_client_socket.h"
   6
   7 #include <algorithm>
   8 #include <iterator>
   9 #include <map>
  10
  11 #include "base/sys_byteorder.h"
  12 #include "net/base/address_list.h"
  13 #include "net/base/net_log.h"
  14 #include "net/base/net_log_unittest.h"
  15 #include "net/base/test_completion_callback.h"
  16 #include "net/base/winsock_init.h"
  17 #include "net/dns/mock_host_resolver.h"
  18 #include "net/socket/client_socket_factory.h"
  19 #include "net/socket/socket_test_util.h"
  20 #include "net/socket/tcp_client_socket.h"
  21 #include "testing/gtest/include/gtest/gtest.h"
  22 #include "testing/platform_test.h"
  23
  24 //-----------------------------------------------------------------------------
  25
  26 namespace net {
  27
  28 namespace {
  29
  30 // Base class to test SOCKS5ClientSocket
  31 class SOCKS5ClientSocketTest : public PlatformTest {
  32  public:
  33   SOCKS5ClientSocketTest();
  34   // Create a SOCKSClientSocket on top of a MockSocket.
  35   scoped_ptr<SOCKS5ClientSocket> BuildMockSocket(MockRead reads[],
  36                                                  size_t reads_count,
  37                                                  MockWrite writes[],
  38                                                  size_t writes_count,
  39                                                  const std::string& hostname,
  40                                                  int port,
  41                                                  NetLog* net_log);
  42
  43   void SetUp() override;
  44
  45  protected:
  46   const uint16 kNwPort;
  47   CapturingNetLog net_log_;
  48   scoped_ptr<SOCKS5ClientSocket> user_sock_;
  49   AddressList address_list_;
  50   // Filled in by BuildMockSocket() and owned by its return value
  51   // (which |user_sock| is set to).
  52   StreamSocket* tcp_sock_;
  53   TestCompletionCallback callback_;
  54   scoped_ptr<MockHostResolver> host_resolver_;
  55   scoped_ptr<SocketDataProvider> data_;
  56
  57  private:
  58   DISALLOW_COPY_AND_ASSIGN(SOCKS5ClientSocketTest);
  59 };
  60
  61 SOCKS5ClientSocketTest::SOCKS5ClientSocketTest()
  62   : kNwPort(base::HostToNet16(80)),
  63     host_resolver_(new MockHostResolver) {
  64 }
  65
  66 // Set up platform before every test case
  67 void SOCKS5ClientSocketTest::SetUp() {
  68   PlatformTest::SetUp();
  69
  70   // Resolve the "localhost" AddressList used by the TCP connection to connect.
  71   HostResolver::RequestInfo info(HostPortPair("www.socks-proxy.com", 1080));
  72   TestCompletionCallback callback;
  73   int rv = host_resolver_->Resolve(info,
  74                                    DEFAULT_PRIORITY,
  75                                    &address_list_,
  76                                    callback.callback(),
  77                                    NULL,
  78                                    BoundNetLog());
  79   ASSERT_EQ(ERR_IO_PENDING, rv);
  80   rv = callback.WaitForResult();
  81   ASSERT_EQ(OK, rv);
  82 }
  83
  84 scoped_ptr<SOCKS5ClientSocket> SOCKS5ClientSocketTest::BuildMockSocket(
  85     MockRead reads[],
  86     size_t reads_count,
  87     MockWrite writes[],
  88     size_t writes_count,
  89     const std::string& hostname,
  90     int port,
  91     NetLog* net_log) {
  92   TestCompletionCallback callback;
  93   data_.reset(new StaticSocketDataProvider(reads, reads_count,
  94                                            writes, writes_count));
  95   tcp_sock_ = new MockTCPClientSocket(address_list_, net_log, data_.get());
  96
  97   int rv = tcp_sock_->Connect(callback.callback());
  98   EXPECT_EQ(ERR_IO_PENDING, rv);
  99   rv = callback.WaitForResult();
 100   EXPECT_EQ(OK, rv);
 101   EXPECT_TRUE(tcp_sock_->IsConnected());
 102
 103   scoped_ptr<ClientSocketHandle> connection(new ClientSocketHandle);
 104   // |connection| takes ownership of |tcp_sock_|, but keep a
 105   // non-owning pointer to it.
 106   connection->SetSocket(scoped_ptr<StreamSocket>(tcp_sock_));
 107   return scoped_ptr<SOCKS5ClientSocket>(new SOCKS5ClientSocket(
 108       connection.Pass(),
 109       HostResolver::RequestInfo(HostPortPair(hostname, port))));
 110 }
 111
 112 // Tests a complete SOCKS5 handshake and the disconnection.
 113 TEST_F(SOCKS5ClientSocketTest, CompleteHandshake) {
 114   const std::string payload_write = "random data";
 115   const std::string payload_read = "moar random data";
 116
 117   const char kOkRequest[] = {
 118     0x05,  // Version
 119     0x01,  // Command (CONNECT)
 120     0x00,  // Reserved.
 121     0x03,  // Address type (DOMAINNAME).
 122     0x09,  // Length of domain (9)
 123     // Domain string:
 124     'l', 'o', 'c', 'a', 'l', 'h', 'o', 's', 't',
 125     0x00, 0x50,  // 16-bit port (80)
 126   };
 127
 128   MockWrite data_writes[] = {
 129       MockWrite(ASYNC, kSOCKS5GreetRequest, kSOCKS5GreetRequestLength),
 130       MockWrite(ASYNC, kOkRequest, arraysize(kOkRequest)),
 131       MockWrite(ASYNC, payload_write.data(), payload_write.size()) };
 132   MockRead data_reads[] = {
 133       MockRead(ASYNC, kSOCKS5GreetResponse, kSOCKS5GreetResponseLength),
 134       MockRead(ASYNC, kSOCKS5OkResponse, kSOCKS5OkResponseLength),
 135       MockRead(ASYNC, payload_read.data(), payload_read.size()) };
 136
 137   user_sock_ = BuildMockSocket(data_reads, arraysize(data_reads),
 138                                data_writes, arraysize(data_writes),
 139                                "localhost", 80, &net_log_);
 140
 141   // At this state the TCP connection is completed but not the SOCKS handshake.
 142   EXPECT_TRUE(tcp_sock_->IsConnected());
 143   EXPECT_FALSE(user_sock_->IsConnected());
 144
 145   int rv = user_sock_->Connect(callback_.callback());
 146   EXPECT_EQ(ERR_IO_PENDING, rv);
 147   EXPECT_FALSE(user_sock_->IsConnected());
 148
 149   CapturingNetLog::CapturedEntryList net_log_entries;
 150   net_log_.GetEntries(&net_log_entries);
 151   EXPECT_TRUE(LogContainsBeginEvent(net_log_entries, 0,
 152                                     NetLog::TYPE_SOCKS5_CONNECT));
 153
 154   rv = callback_.WaitForResult();
 155
 156   EXPECT_EQ(OK, rv);
 157   EXPECT_TRUE(user_sock_->IsConnected());
 158
 159   net_log_.GetEntries(&net_log_entries);
 160   EXPECT_TRUE(LogContainsEndEvent(net_log_entries, -1,
 161                                   NetLog::TYPE_SOCKS5_CONNECT));
 162
 163   scoped_refptr<IOBuffer> buffer(new IOBuffer(payload_write.size()));
 164   memcpy(buffer->data(), payload_write.data(), payload_write.size());
 165   rv = user_sock_->Write(
 166       buffer.get(), payload_write.size(), callback_.callback());
 167   EXPECT_EQ(ERR_IO_PENDING, rv);
 168   rv = callback_.WaitForResult();
 169   EXPECT_EQ(static_cast<int>(payload_write.size()), rv);
 170
 171   buffer = new IOBuffer(payload_read.size());
 172   rv =
 173       user_sock_->Read(buffer.get(), payload_read.size(), callback_.callback());
 174   EXPECT_EQ(ERR_IO_PENDING, rv);
 175   rv = callback_.WaitForResult();
 176   EXPECT_EQ(static_cast<int>(payload_read.size()), rv);
 177   EXPECT_EQ(payload_read, std::string(buffer->data(), payload_read.size()));
 178
 179   user_sock_->Disconnect();
 180   EXPECT_FALSE(tcp_sock_->IsConnected());
 181   EXPECT_FALSE(user_sock_->IsConnected());
 182 }
 183
 184 // Test that you can call Connect() again after having called Disconnect().
 185 TEST_F(SOCKS5ClientSocketTest, ConnectAndDisconnectTwice) {
 186   const std::string hostname = "my-host-name";
 187   const char kSOCKS5DomainRequest[] = {
 188       0x05,  // VER
 189       0x01,  // CMD
 190       0x00,  // RSV
 191       0x03,  // ATYPE
 192   };
 193
 194   std::string request(kSOCKS5DomainRequest, arraysize(kSOCKS5DomainRequest));
 195   request.push_back(hostname.size());
 196   request.append(hostname);
 197   request.append(reinterpret_cast<const char*>(&kNwPort), sizeof(kNwPort));
 198
 199   for (int i = 0; i < 2; ++i) {
 200     MockWrite data_writes[] = {
 201         MockWrite(SYNCHRONOUS, kSOCKS5GreetRequest, kSOCKS5GreetRequestLength),
 202         MockWrite(SYNCHRONOUS, request.data(), request.size())
 203     };
 204     MockRead data_reads[] = {
 205         MockRead(SYNCHRONOUS, kSOCKS5GreetResponse, kSOCKS5GreetResponseLength),
 206         MockRead(SYNCHRONOUS, kSOCKS5OkResponse, kSOCKS5OkResponseLength)
 207     };
 208
 209     user_sock_ = BuildMockSocket(data_reads, arraysize(data_reads),
 210                                  data_writes, arraysize(data_writes),
 211                                  hostname, 80, NULL);
 212
 213     int rv = user_sock_->Connect(callback_.callback());
 214     EXPECT_EQ(OK, rv);
 215     EXPECT_TRUE(user_sock_->IsConnected());
 216
 217     user_sock_->Disconnect();
 218     EXPECT_FALSE(user_sock_->IsConnected());
 219   }
 220 }
 221
 222 // Test that we fail trying to connect to a hosname longer than 255 bytes.
 223 TEST_F(SOCKS5ClientSocketTest, LargeHostNameFails) {
 224   // Create a string of length 256, where each character is 'x'.
 225   std::string large_host_name;
 226   std::fill_n(std::back_inserter(large_host_name), 256, 'x');
 227
 228   // Create a SOCKS socket, with mock transport socket.
 229   MockWrite data_writes[] = {MockWrite()};
 230   MockRead data_reads[] = {MockRead()};
 231   user_sock_ = BuildMockSocket(data_reads, arraysize(data_reads),
 232                                data_writes, arraysize(data_writes),
 233                                large_host_name, 80, NULL);
 234
 235   // Try to connect -- should fail (without having read/written anything to
 236   // the transport socket first) because the hostname is too long.
 237   TestCompletionCallback callback;
 238   int rv = user_sock_->Connect(callback.callback());
 239   EXPECT_EQ(ERR_SOCKS_CONNECTION_FAILED, rv);
 240 }
 241
 242 TEST_F(SOCKS5ClientSocketTest, PartialReadWrites) {
 243   const std::string hostname = "www.google.com";
 244
 245   const char kOkRequest[] = {
 246     0x05,  // Version
 247     0x01,  // Command (CONNECT)
 248     0x00,  // Reserved.
 249     0x03,  // Address type (DOMAINNAME).
 250     0x0E,  // Length of domain (14)
 251     // Domain string:
 252     'w', 'w', 'w', '.', 'g', 'o', 'o', 'g', 'l', 'e', '.', 'c', 'o', 'm',
 253     0x00, 0x50,  // 16-bit port (80)
 254   };
 255
 256   // Test for partial greet request write
 257   {
 258     const char partial1[] = { 0x05, 0x01 };
 259     const char partial2[] = { 0x00 };
 260     MockWrite data_writes[] = {
 261         MockWrite(ASYNC, partial1, arraysize(partial1)),
 262         MockWrite(ASYNC, partial2, arraysize(partial2)),
 263         MockWrite(ASYNC, kOkRequest, arraysize(kOkRequest)) };
 264     MockRead data_reads[] = {
 265         MockRead(ASYNC, kSOCKS5GreetResponse, kSOCKS5GreetResponseLength),
 266         MockRead(ASYNC, kSOCKS5OkResponse, kSOCKS5OkResponseLength) };
 267     user_sock_ = BuildMockSocket(data_reads, arraysize(data_reads),
 268                                  data_writes, arraysize(data_writes),
 269                                  hostname, 80, &net_log_);
 270     int rv = user_sock_->Connect(callback_.callback());
 271     EXPECT_EQ(ERR_IO_PENDING, rv);
 272
 273     CapturingNetLog::CapturedEntryList net_log_entries;
 274     net_log_.GetEntries(&net_log_entries);
 275     EXPECT_TRUE(LogContainsBeginEvent(net_log_entries, 0,
 276                 NetLog::TYPE_SOCKS5_CONNECT));
 277
 278     rv = callback_.WaitForResult();
 279     EXPECT_EQ(OK, rv);
 280     EXPECT_TRUE(user_sock_->IsConnected());
 281
 282     net_log_.GetEntries(&net_log_entries);
 283     EXPECT_TRUE(LogContainsEndEvent(net_log_entries, -1,
 284                 NetLog::TYPE_SOCKS5_CONNECT));
 285   }
 286
 287   // Test for partial greet response read
 288   {
 289     const char partial1[] = { 0x05 };
 290     const char partial2[] = { 0x00 };
 291     MockWrite data_writes[] = {
 292         MockWrite(ASYNC, kSOCKS5GreetRequest, kSOCKS5GreetRequestLength),
 293         MockWrite(ASYNC, kOkRequest, arraysize(kOkRequest)) };
 294     MockRead data_reads[] = {
 295         MockRead(ASYNC, partial1, arraysize(partial1)),
 296         MockRead(ASYNC, partial2, arraysize(partial2)),
 297         MockRead(ASYNC, kSOCKS5OkResponse, kSOCKS5OkResponseLength) };
 298     user_sock_ = BuildMockSocket(data_reads, arraysize(data_reads),
 299                                  data_writes, arraysize(data_writes),
 300                                  hostname, 80, &net_log_);
 301     int rv = user_sock_->Connect(callback_.callback());
 302     EXPECT_EQ(ERR_IO_PENDING, rv);
 303
 304     CapturingNetLog::CapturedEntryList net_log_entries;
 305     net_log_.GetEntries(&net_log_entries);
 306     EXPECT_TRUE(LogContainsBeginEvent(net_log_entries, 0,
 307                                       NetLog::TYPE_SOCKS5_CONNECT));
 308     rv = callback_.WaitForResult();
 309     EXPECT_EQ(OK, rv);
 310     EXPECT_TRUE(user_sock_->IsConnected());
 311     net_log_.GetEntries(&net_log_entries);
 312     EXPECT_TRUE(LogContainsEndEvent(net_log_entries, -1,
 313                                     NetLog::TYPE_SOCKS5_CONNECT));
 314   }
 315
 316   // Test for partial handshake request write.
 317   {
 318     const int kSplitPoint = 3;  // Break handshake write into two parts.
 319     MockWrite data_writes[] = {
 320         MockWrite(ASYNC, kSOCKS5GreetRequest, kSOCKS5GreetRequestLength),
 321         MockWrite(ASYNC, kOkRequest, kSplitPoint),
 322         MockWrite(ASYNC, kOkRequest + kSplitPoint,
 323                   arraysize(kOkRequest) - kSplitPoint)
 324     };
 325     MockRead data_reads[] = {
 326         MockRead(ASYNC, kSOCKS5GreetResponse, kSOCKS5GreetResponseLength),
 327         MockRead(ASYNC, kSOCKS5OkResponse, kSOCKS5OkResponseLength) };
 328     user_sock_ = BuildMockSocket(data_reads, arraysize(data_reads),
 329                                  data_writes, arraysize(data_writes),
 330                                  hostname, 80, &net_log_);
 331     int rv = user_sock_->Connect(callback_.callback());
 332     EXPECT_EQ(ERR_IO_PENDING, rv);
 333     CapturingNetLog::CapturedEntryList net_log_entries;
 334     net_log_.GetEntries(&net_log_entries);
 335     EXPECT_TRUE(LogContainsBeginEvent(net_log_entries, 0,
 336                                       NetLog::TYPE_SOCKS5_CONNECT));
 337     rv = callback_.WaitForResult();
 338     EXPECT_EQ(OK, rv);
 339     EXPECT_TRUE(user_sock_->IsConnected());
 340     net_log_.GetEntries(&net_log_entries);
 341     EXPECT_TRUE(LogContainsEndEvent(net_log_entries, -1,
 342                                     NetLog::TYPE_SOCKS5_CONNECT));
 343   }
 344
 345   // Test for partial handshake response read
 346   {
 347     const int kSplitPoint = 6;  // Break the handshake read into two parts.
 348     MockWrite data_writes[] = {
 349         MockWrite(ASYNC, kSOCKS5GreetRequest, kSOCKS5GreetRequestLength),
 350         MockWrite(ASYNC, kOkRequest, arraysize(kOkRequest))
 351     };
 352     MockRead data_reads[] = {
 353         MockRead(ASYNC, kSOCKS5GreetResponse, kSOCKS5GreetResponseLength),
 354         MockRead(ASYNC, kSOCKS5OkResponse, kSplitPoint),
 355         MockRead(ASYNC, kSOCKS5OkResponse + kSplitPoint,
 356                  kSOCKS5OkResponseLength - kSplitPoint)
 357     };
 358
 359     user_sock_ = BuildMockSocket(data_reads, arraysize(data_reads),
 360                                  data_writes, arraysize(data_writes),
 361                                  hostname, 80, &net_log_);
 362     int rv = user_sock_->Connect(callback_.callback());
 363     EXPECT_EQ(ERR_IO_PENDING, rv);
 364     CapturingNetLog::CapturedEntryList net_log_entries;
 365     net_log_.GetEntries(&net_log_entries);
 366     EXPECT_TRUE(LogContainsBeginEvent(net_log_entries, 0,
 367                                       NetLog::TYPE_SOCKS5_CONNECT));
 368     rv = callback_.WaitForResult();
 369     EXPECT_EQ(OK, rv);
 370     EXPECT_TRUE(user_sock_->IsConnected());
 371     net_log_.GetEntries(&net_log_entries);
 372     EXPECT_TRUE(LogContainsEndEvent(net_log_entries, -1,
 373                                     NetLog::TYPE_SOCKS5_CONNECT));
 374   }
 375 }
 376
 377 }  // namespace
 378
 379 }  // namespace net