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1 // Copyright (c) 2006-2009 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 // These tests are POSIX only. | |
6 | |
7 #include "ipc/ipc_channel_posix.h" | |
8 | |
9 #include <fcntl.h> | |
10 #include <sys/socket.h> | |
11 #include <sys/un.h> | |
12 #include <unistd.h> | |
13 | |
14 #include "base/basictypes.h" | |
15 #include "base/eintr_wrapper.h" | |
16 #include "base/file_path.h" | |
17 #include "base/file_util.h" | |
18 #include "base/message_loop.h" | |
19 #include "base/scoped_ptr.h" | |
20 #include "base/test/multiprocess_test.h" | |
21 #include "base/test/test_timeouts.h" | |
22 #include "testing/multiprocess_func_list.h" | |
23 | |
24 namespace { | |
25 | |
26 enum { | |
27 QUIT_MESSAGE = 47 | |
28 }; | |
29 | |
30 class IPCChannelPosixTestListener : public IPC::Channel::Listener { | |
31 public: | |
32 enum STATUS { | |
33 DISCONNECTED, | |
34 MESSAGE_RECEIVED, | |
35 CHANNEL_ERROR, | |
36 CONNECTED, | |
37 DENIED, | |
38 LISTEN_ERROR | |
39 }; | |
40 | |
41 IPCChannelPosixTestListener(bool quit_only_on_message) | |
42 : status_(DISCONNECTED), quit_only_on_message_(quit_only_on_message) {} | |
43 | |
44 virtual ~IPCChannelPosixTestListener() {} | |
45 | |
46 virtual void OnMessageReceived(const IPC::Message& message) { | |
47 EXPECT_EQ(message.type(), QUIT_MESSAGE); | |
48 status_ = MESSAGE_RECEIVED; | |
49 QuitRunLoop(); | |
50 } | |
51 | |
52 virtual void OnChannelConnected(int32 peer_pid) { | |
53 status_ = CONNECTED; | |
54 if (!quit_only_on_message_) { | |
55 QuitRunLoop(); | |
56 } | |
57 } | |
58 | |
59 virtual void OnChannelError() { | |
60 status_ = CHANNEL_ERROR; | |
61 if (!quit_only_on_message_) { | |
62 QuitRunLoop(); | |
63 } | |
64 } | |
65 | |
66 virtual void OnChannelDenied() { | |
67 status_ = DENIED; | |
68 if (!quit_only_on_message_) { | |
69 QuitRunLoop(); | |
70 } | |
71 } | |
72 | |
73 virtual void OnChannelListenError() { | |
74 status_ = LISTEN_ERROR; | |
75 if (!quit_only_on_message_) { | |
76 QuitRunLoop(); | |
77 } | |
78 } | |
79 | |
80 STATUS status() { return status_; } | |
81 | |
82 void QuitRunLoop() { | |
83 MessageLoopForIO::current()->QuitNow(); | |
84 } | |
85 | |
86 private: | |
87 // The current status of the listener. | |
88 STATUS status_; | |
89 // If |quit_only_on_message_| then the listener will only break out of | |
90 // the run loop when the QUIT_MESSAGE is received. | |
91 bool quit_only_on_message_; | |
92 }; | |
93 | |
94 } // namespace | |
95 | |
96 class IPCChannelPosixTest : public base::MultiProcessTest { | |
97 public: | |
98 static const char kConnectionSocketTestName[]; | |
99 static void SetUpSocket(IPC::ChannelHandle *handle, | |
100 IPC::Channel::Mode mode); | |
101 static void SpinRunLoop(int milliseconds); | |
102 | |
103 protected: | |
104 virtual void SetUp(); | |
105 virtual void TearDown(); | |
106 | |
107 private: | |
108 scoped_ptr<MessageLoopForIO> message_loop_; | |
109 }; | |
110 | |
111 const char IPCChannelPosixTest::kConnectionSocketTestName[] = | |
112 "/var/tmp/chrome_IPCChannelPosixTest__ConnectionSocket"; | |
113 | |
114 void IPCChannelPosixTest::SetUp() { | |
115 MultiProcessTest::SetUp(); | |
116 // Construct a fresh IO Message loop for the duration of each test. | |
117 message_loop_.reset(new MessageLoopForIO()); | |
118 } | |
119 | |
120 void IPCChannelPosixTest::TearDown() { | |
121 message_loop_.reset(NULL); | |
122 MultiProcessTest::TearDown(); | |
123 } | |
124 | |
125 // Create up a socket and bind and listen to it, or connect it | |
126 // depending on the |mode|. | |
127 void IPCChannelPosixTest::SetUpSocket(IPC::ChannelHandle *handle, | |
128 IPC::Channel::Mode mode) { | |
129 const std::string& name = handle->name; | |
130 | |
131 int socket_fd = socket(PF_UNIX, SOCK_STREAM, 0); | |
132 ASSERT_GE(socket_fd, 0) << name; | |
133 ASSERT_GE(fcntl(socket_fd, F_SETFL, O_NONBLOCK), 0); | |
134 struct sockaddr_un server_address = { 0 }; | |
135 memset(&server_address, 0, sizeof(server_address)); | |
136 server_address.sun_family = AF_UNIX; | |
137 DCHECK_EQ(static_cast<int>(name.length()), | |
138 snprintf(server_address.sun_path, IPC::kMaxPipeNameLength, "%s", | |
139 name.c_str())); | |
140 size_t server_address_len = offsetof(struct sockaddr_un, sun_path) + | |
141 strlen(server_address.sun_path) + 1; | |
142 | |
143 if (mode == IPC::Channel::MODE_NAMED_SERVER) { | |
144 // Only one server at a time. Cleanup garbage if it exists. | |
145 unlink(name.c_str()); | |
146 // Make sure the path we need exists. | |
147 FilePath path(name); | |
148 FilePath dir_path = path.DirName(); | |
149 ASSERT_TRUE(file_util::CreateDirectory(dir_path)); | |
150 ASSERT_GE(bind(socket_fd, | |
151 reinterpret_cast<struct sockaddr *>(&server_address), | |
152 server_address_len), 0) << server_address.sun_path | |
153 << ": " << strerror(errno) | |
154 << "(" << errno << ")"; | |
155 ASSERT_GE(listen(socket_fd, SOMAXCONN), 0) << server_address.sun_path | |
156 << ": " << strerror(errno) | |
157 << "(" << errno << ")"; | |
158 } else if (mode == IPC::Channel::MODE_NAMED_CLIENT) { | |
159 ASSERT_GE(connect(socket_fd, | |
160 reinterpret_cast<struct sockaddr *>(&server_address), | |
161 server_address_len), 0) << server_address.sun_path | |
162 << ": " << strerror(errno) | |
163 << "(" << errno << ")"; | |
164 } else { | |
165 FAIL() << "Unknown mode " << mode; | |
166 } | |
167 handle->socket.fd = socket_fd; | |
168 } | |
169 | |
170 void IPCChannelPosixTest::SpinRunLoop(int milliseconds) { | |
171 MessageLoopForIO *loop = MessageLoopForIO::current(); | |
172 // Post a quit task so that this loop eventually ends and we don't hang | |
173 // in the case of a bad test. Usually, the run loop will quit sooner than | |
174 // that because all tests use a IPCChannelPosixTestListener which quits the | |
175 // current run loop on any channel activity. | |
176 loop->PostDelayedTask(FROM_HERE, new MessageLoop::QuitTask(), milliseconds); | |
177 loop->Run(); | |
178 } | |
179 | |
180 TEST_F(IPCChannelPosixTest, BasicListen) { | |
181 // Test creating a socket that is listening. | |
182 IPC::ChannelHandle handle("/var/tmp/IPCChannelPosixTest_BasicListen"); | |
183 SetUpSocket(&handle, IPC::Channel::MODE_NAMED_SERVER); | |
184 unlink(handle.name.c_str()); | |
185 IPC::Channel channel(handle, IPC::Channel::MODE_NAMED_SERVER, NULL); | |
186 ASSERT_TRUE(channel.Connect()); | |
187 ASSERT_TRUE(channel.AcceptsConnections()); | |
188 ASSERT_FALSE(channel.HasAcceptedConnection()); | |
189 channel.ResetToAcceptingConnectionState(); | |
190 ASSERT_FALSE(channel.HasAcceptedConnection()); | |
191 } | |
192 | |
193 TEST_F(IPCChannelPosixTest, BasicConnected) { | |
194 // Test creating a socket that is connected. | |
195 int pipe_fds[2]; | |
196 ASSERT_EQ(0, socketpair(AF_UNIX, SOCK_STREAM, 0, pipe_fds)); | |
197 std::string socket_name("/var/tmp/IPCChannelPosixTest_BasicConnected"); | |
198 ASSERT_GE(fcntl(pipe_fds[0], F_SETFL, O_NONBLOCK), 0); | |
199 | |
200 base::FileDescriptor fd(pipe_fds[0], false); | |
201 IPC::ChannelHandle handle(socket_name, fd); | |
202 IPC::Channel channel(handle, IPC::Channel::MODE_SERVER, NULL); | |
203 ASSERT_TRUE(channel.Connect()); | |
204 ASSERT_FALSE(channel.AcceptsConnections()); | |
205 channel.Close(); | |
206 ASSERT_TRUE(HANDLE_EINTR(close(pipe_fds[1])) == 0); | |
207 | |
208 // Make sure that we can use the socket that is created for us by | |
209 // a standard channel. | |
210 IPC::Channel channel2(socket_name, IPC::Channel::MODE_SERVER, NULL); | |
211 ASSERT_TRUE(channel2.Connect()); | |
212 ASSERT_FALSE(channel2.AcceptsConnections()); | |
213 } | |
214 | |
215 TEST_F(IPCChannelPosixTest, AdvancedConnected) { | |
216 // Test creating a connection to an external process. | |
217 IPCChannelPosixTestListener listener(false); | |
218 IPC::ChannelHandle chan_handle(kConnectionSocketTestName); | |
219 SetUpSocket(&chan_handle, IPC::Channel::MODE_NAMED_SERVER); | |
220 IPC::Channel channel(chan_handle, IPC::Channel::MODE_NAMED_SERVER, &listener); | |
221 ASSERT_TRUE(channel.Connect()); | |
222 ASSERT_TRUE(channel.AcceptsConnections()); | |
223 ASSERT_FALSE(channel.HasAcceptedConnection()); | |
224 | |
225 base::ProcessHandle handle = SpawnChild("IPCChannelPosixTestConnectionProc", | |
226 false); | |
227 ASSERT_TRUE(handle); | |
228 SpinRunLoop(TestTimeouts::action_max_timeout_ms()); | |
229 ASSERT_EQ(IPCChannelPosixTestListener::CONNECTED, listener.status()); | |
230 ASSERT_TRUE(channel.HasAcceptedConnection()); | |
231 IPC::Message* message = new IPC::Message(0, // routing_id | |
232 QUIT_MESSAGE, // message type | |
233 IPC::Message::PRIORITY_NORMAL); | |
234 channel.Send(message); | |
235 SpinRunLoop(TestTimeouts::action_timeout_ms()); | |
236 int exit_code = 0; | |
237 EXPECT_TRUE(base::WaitForExitCode(handle, &exit_code)); | |
238 EXPECT_EQ(0, exit_code); | |
239 ASSERT_EQ(IPCChannelPosixTestListener::CHANNEL_ERROR, listener.status()); | |
240 ASSERT_FALSE(channel.HasAcceptedConnection()); | |
241 } | |
242 | |
243 TEST_F(IPCChannelPosixTest, ResetState) { | |
244 // Test creating a connection to an external process. Close the connection, | |
245 // but continue to listen and make sure another external process can connect | |
246 // to us. | |
247 IPCChannelPosixTestListener listener(false); | |
248 IPC::ChannelHandle chan_handle(kConnectionSocketTestName); | |
249 SetUpSocket(&chan_handle, IPC::Channel::MODE_NAMED_SERVER); | |
250 IPC::Channel channel(chan_handle, IPC::Channel::MODE_NAMED_SERVER, &listener); | |
251 ASSERT_TRUE(channel.Connect()); | |
252 ASSERT_TRUE(channel.AcceptsConnections()); | |
253 ASSERT_FALSE(channel.HasAcceptedConnection()); | |
254 | |
255 base::ProcessHandle handle = SpawnChild("IPCChannelPosixTestConnectionProc", | |
256 false); | |
257 ASSERT_TRUE(handle); | |
258 SpinRunLoop(TestTimeouts::action_max_timeout_ms()); | |
259 ASSERT_EQ(IPCChannelPosixTestListener::CONNECTED, listener.status()); | |
260 ASSERT_TRUE(channel.HasAcceptedConnection()); | |
261 channel.ResetToAcceptingConnectionState(); | |
262 ASSERT_FALSE(channel.HasAcceptedConnection()); | |
263 | |
264 base::ProcessHandle handle2 = SpawnChild("IPCChannelPosixTestConnectionProc", | |
265 false); | |
266 ASSERT_TRUE(handle2); | |
267 SpinRunLoop(TestTimeouts::action_max_timeout_ms()); | |
268 ASSERT_EQ(IPCChannelPosixTestListener::CONNECTED, listener.status()); | |
269 ASSERT_TRUE(channel.HasAcceptedConnection()); | |
270 IPC::Message* message = new IPC::Message(0, // routing_id | |
271 QUIT_MESSAGE, // message type | |
272 IPC::Message::PRIORITY_NORMAL); | |
273 channel.Send(message); | |
274 SpinRunLoop(TestTimeouts::action_timeout_ms()); | |
275 EXPECT_TRUE(base::KillProcess(handle, 0, false)); | |
276 int exit_code = 0; | |
277 EXPECT_TRUE(base::WaitForExitCode(handle2, &exit_code)); | |
278 EXPECT_EQ(0, exit_code); | |
279 ASSERT_EQ(IPCChannelPosixTestListener::CHANNEL_ERROR, listener.status()); | |
280 ASSERT_FALSE(channel.HasAcceptedConnection()); | |
281 } | |
282 | |
283 TEST_F(IPCChannelPosixTest, MultiConnection) { | |
284 // Test setting up a connection to an external process, and then have | |
285 // another external process attempt to connect to us. | |
286 IPCChannelPosixTestListener listener(false); | |
287 IPC::ChannelHandle chan_handle(kConnectionSocketTestName); | |
288 SetUpSocket(&chan_handle, IPC::Channel::MODE_NAMED_SERVER); | |
289 IPC::Channel channel(chan_handle, IPC::Channel::MODE_NAMED_SERVER, &listener); | |
290 ASSERT_TRUE(channel.Connect()); | |
291 ASSERT_TRUE(channel.AcceptsConnections()); | |
292 ASSERT_FALSE(channel.HasAcceptedConnection()); | |
293 | |
294 base::ProcessHandle handle = SpawnChild("IPCChannelPosixTestConnectionProc", | |
295 false); | |
296 ASSERT_TRUE(handle); | |
297 SpinRunLoop(TestTimeouts::action_max_timeout_ms()); | |
298 ASSERT_EQ(IPCChannelPosixTestListener::CONNECTED, listener.status()); | |
299 ASSERT_TRUE(channel.HasAcceptedConnection()); | |
300 base::ProcessHandle handle2 = SpawnChild("IPCChannelPosixFailConnectionProc", | |
301 false); | |
302 ASSERT_TRUE(handle2); | |
303 SpinRunLoop(TestTimeouts::action_max_timeout_ms()); | |
304 int exit_code = 0; | |
305 EXPECT_TRUE(base::WaitForExitCode(handle2, &exit_code)); | |
306 EXPECT_EQ(exit_code, 0); | |
307 ASSERT_EQ(IPCChannelPosixTestListener::DENIED, listener.status()); | |
308 ASSERT_TRUE(channel.HasAcceptedConnection()); | |
309 IPC::Message* message = new IPC::Message(0, // routing_id | |
310 QUIT_MESSAGE, // message type | |
311 IPC::Message::PRIORITY_NORMAL); | |
312 channel.Send(message); | |
313 SpinRunLoop(TestTimeouts::action_timeout_ms()); | |
314 EXPECT_TRUE(base::WaitForExitCode(handle, &exit_code)); | |
315 EXPECT_EQ(exit_code, 0); | |
316 ASSERT_EQ(IPCChannelPosixTestListener::CHANNEL_ERROR, listener.status()); | |
317 ASSERT_FALSE(channel.HasAcceptedConnection()); | |
318 } | |
319 | |
320 // A long running process that connects to us | |
321 MULTIPROCESS_TEST_MAIN(IPCChannelPosixTestConnectionProc) { | |
322 MessageLoopForIO message_loop; | |
323 IPCChannelPosixTestListener listener(true); | |
324 IPC::ChannelHandle handle(IPCChannelPosixTest::kConnectionSocketTestName); | |
325 IPCChannelPosixTest::SetUpSocket(&handle, IPC::Channel::MODE_NAMED_CLIENT); | |
326 IPC::Channel channel(handle, IPC::Channel::MODE_NAMED_CLIENT, &listener); | |
327 EXPECT_TRUE(channel.Connect()); | |
328 IPCChannelPosixTest::SpinRunLoop(TestTimeouts::action_max_timeout_ms()); | |
329 EXPECT_EQ(IPCChannelPosixTestListener::MESSAGE_RECEIVED, listener.status()); | |
330 return 0; | |
331 } | |
332 | |
333 // Simple external process that shouldn't be able to connect to us. | |
334 MULTIPROCESS_TEST_MAIN(IPCChannelPosixFailConnectionProc) { | |
335 MessageLoopForIO message_loop; | |
336 IPCChannelPosixTestListener listener(false); | |
337 IPC::ChannelHandle handle(IPCChannelPosixTest::kConnectionSocketTestName); | |
338 IPCChannelPosixTest::SetUpSocket(&handle, IPC::Channel::MODE_NAMED_CLIENT); | |
339 IPC::Channel channel(handle, IPC::Channel::MODE_NAMED_CLIENT, &listener); | |
340 | |
341 // In this case connect may succeed or fail depending on if the packet | |
342 // actually gets sent at sendmsg. Since we never delay on send, we may not | |
343 // see the error. However even if connect succeeds, eventually we will get an | |
344 // error back since the channel will be closed when we attempt to read from | |
345 // it. | |
346 bool connected = channel.Connect(); | |
347 if (connected) { | |
348 IPCChannelPosixTest::SpinRunLoop(TestTimeouts::action_max_timeout_ms()); | |
349 EXPECT_EQ(IPCChannelPosixTestListener::CHANNEL_ERROR, listener.status()); | |
350 } else { | |
351 EXPECT_EQ(IPCChannelPosixTestListener::DISCONNECTED, listener.status()); | |
352 } | |
353 return 0; | |
354 } | |
355 | |
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