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Side by Side Diff: ipc/ipc_channel_posix_unittest.cc

Issue 5749001: Add support for sockets that can listen and accept a connection. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Fix up use of DCHECK which was causing release build failures Created 10 years ago
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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 int path_len = snprintf(server_address.sun_path, IPC::kMaxPipeNameLength,
138 "%s", name.c_str());
139 DCHECK_EQ(static_cast<int>(name.length()), path_len);
140 size_t server_address_len = offsetof(struct sockaddr_un,
141 sun_path) + path_len + 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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