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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: fixed up some small singleton usage in preparation for submitting 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 <fcntl.h>
8 #include <sys/socket.h>
9 #include <sys/un.h>
10 #include <unistd.h>
11
12 #include "base/basictypes.h"
13 #include "base/eintr_wrapper.h"
14 #include "base/message_loop.h"
15 #include "base/scoped_ptr.h"
16 #include "base/test/multiprocess_test.h"
17 #include "base/test/test_timeouts.h"
18 #include "ipc/ipc_channel_posix.h"
Evan Martin 2010/12/14 20:23:19 This should be in its own block around line 6 I th
dmac 2010/12/14 21:01:16 I was matching the style of the other unittest fil
19 #include "testing/multiprocess_func_list.h"
20
21 namespace {
22
23 enum {
24 QUIT_MESSAGE = 47
25 };
26
27 class IPCChannelPosixTestListener : public IPC::Channel::Listener {
28 public:
29 enum STATUS {
30 DISCONNECTED,
31 MESSAGE_RECEIVED,
32 CHANNEL_ERROR,
33 CONNECTED,
34 DENIED,
35 LISTEN_ERROR
36 };
37
38 IPCChannelPosixTestListener(bool quit_only_on_message)
39 : status_(DISCONNECTED), quit_only_on_message_(quit_only_on_message) {}
40
41 virtual ~IPCChannelPosixTestListener() {}
42
43 virtual void OnMessageReceived(const IPC::Message& message) {
44 EXPECT_EQ(message.type(), QUIT_MESSAGE);
45 status_ = MESSAGE_RECEIVED;
46 QuitRunLoop();
47 }
48
49 virtual void OnChannelConnected(int32 peer_pid) {
50 status_ = CONNECTED;
51 if (!quit_only_on_message_) {
52 QuitRunLoop();
53 }
54 }
55
56 virtual void OnChannelError() {
57 status_ = CHANNEL_ERROR;
58 if (!quit_only_on_message_) {
59 QuitRunLoop();
60 }
61 }
62
63 virtual void OnChannelDenied() {
64 status_ = DENIED;
65 if (!quit_only_on_message_) {
66 QuitRunLoop();
67 }
68 }
69
70 virtual void OnChannelListenError() {
71 status_ = LISTEN_ERROR;
72 if (!quit_only_on_message_) {
73 QuitRunLoop();
74 }
75 }
76
77 STATUS status() { return status_; }
78
79 void QuitRunLoop() {
80 MessageLoopForIO::current()->QuitNow();
81 }
82
83 private:
84 // The current status of the listener.
85 STATUS status_;
86 // If |quit_only_on_message_| then the listener will only break out of
87 // the run loop when the QUIT_MESSAGE is received.
88 bool quit_only_on_message_;
89 };
90
91 } // namespace
92
93 class IPCChannelPosixTest : public base::MultiProcessTest {
94 public:
95 static const char kConnectionSocketTestName[];
96 static void SetUpSocket(IPC::ChannelHandle *handle,
97 IPC::Channel::Mode mode);
98 static void SpinRunLoop(int milliseconds);
99
100 protected:
101 virtual void SetUp();
102 virtual void TearDown();
103
104 private:
105 scoped_ptr<MessageLoopForIO> message_loop_;
106 };
107
108 const char IPCChannelPosixTest::kConnectionSocketTestName[] =
109 "/var/tmp/chrome_IPCChannelPosixTest__AdvancedConnected";
110
111 void IPCChannelPosixTest::SetUp() {
112 MultiProcessTest::SetUp();
113 // Construct a fresh IO Message loop for the duration of each test.
114 message_loop_.reset(new MessageLoopForIO());
115 }
116
117 void IPCChannelPosixTest::TearDown() {
118 message_loop_.reset(NULL);
119 MultiProcessTest::TearDown();
120 }
121
122 // Create up a socket and bind and listen to it, or connect it
123 // depending on the |mode|.
124 void IPCChannelPosixTest::SetUpSocket(IPC::ChannelHandle *handle,
125 IPC::Channel::Mode mode) {
126 const std::string& name = handle->name;
127 int socket_fd = socket(PF_UNIX, SOCK_STREAM, 0);
128 ASSERT_GE(socket_fd, 0) << name;
129 ASSERT_GE(fcntl(socket_fd, F_SETFL, O_NONBLOCK), 0);
130 struct sockaddr_un server_address = { 0 };
131 server_address.sun_family = AF_UNIX;
132 memcpy(server_address.sun_path, name.c_str(), name.length() + 1);
133 if (mode == IPC::Channel::MODE_NAMED_SERVER) {
134 // Only one server at a time. Cleanup garbage if it exists.
135 unlink(name.c_str());
136 ASSERT_GE(bind(socket_fd,
137 reinterpret_cast<struct sockaddr *>(&server_address),
138 SUN_LEN(&server_address)), 0) << name;
139 ASSERT_GE(listen(socket_fd, SOMAXCONN), 0) << name;
140 } else if (mode == IPC::Channel::MODE_NAMED_CLIENT) {
141 ASSERT_GE(connect(socket_fd,
142 reinterpret_cast<struct sockaddr *>(&server_address),
143 SUN_LEN(&server_address)), 0) << name;
144 } else {
145 FAIL() << "Unknown mode " << mode;
146 }
147 handle->socket.fd = socket_fd;
148 }
149
150 void IPCChannelPosixTest::SpinRunLoop(int milliseconds) {
151 MessageLoopForIO *loop = MessageLoopForIO::current();
152 // Post a quit task so that this loop eventually ends and we don't hang
153 // in the case of a bad test. Usually, the run loop will quit sooner than
154 // that because all tests use a IPCChannelPosixTestListener which quits the
155 // current run loop on any channel activity.
156 loop->PostDelayedTask(FROM_HERE, new MessageLoop::QuitTask(), milliseconds);
157 loop->Run();
158 }
159
160 TEST_F(IPCChannelPosixTest, BasicListen) {
161 // Test creating a socket that is listening.
162 IPC::ChannelHandle handle("/var/tmp/IPCChannelPosixTest::BasicListen");
163 SetUpSocket(&handle, IPC::Channel::MODE_NAMED_SERVER);
164 unlink(handle.name.c_str());
165 IPC::Channel channel(handle, IPC::Channel::MODE_NAMED_SERVER, NULL);
166 ASSERT_TRUE(channel.Connect());
167 ASSERT_TRUE(channel.AcceptsConnections());
168 ASSERT_FALSE(channel.HasAcceptedConnection());
169 channel.ResetToAcceptingConnectionState();
170 ASSERT_FALSE(channel.HasAcceptedConnection());
171 }
172
173 TEST_F(IPCChannelPosixTest, BasicConnected) {
174 // Test creating a socket that is connected.
175 int pipe_fds[2];
176 ASSERT_EQ(0, socketpair(AF_UNIX, SOCK_STREAM, 0, pipe_fds));
177 std::string socket_name("/var/tmp/IPCChannelPosixTest::BasicConnected");
178 base::FileDescriptor fd(pipe_fds[0], false);
179 IPC::ChannelHandle handle(socket_name, fd);
180 IPC::Channel channel(handle, IPC::Channel::MODE_NAMED_SERVER, NULL);
181 ASSERT_TRUE(channel.Connect());
182 ASSERT_FALSE(channel.AcceptsConnections());
183 channel.Close();
184 ASSERT_TRUE(HANDLE_EINTR(close(pipe_fds[1])) == 0);
185
186 // Make sure that we can use the socket that is created for us by
187 // a standard channel.
188 IPC::Channel channel2(socket_name, IPC::Channel::MODE_SERVER, NULL);
189 ASSERT_TRUE(channel2.Connect());
190 ASSERT_FALSE(channel2.AcceptsConnections());
191 }
192
193 TEST_F(IPCChannelPosixTest, AdvancedConnected) {
194 // Test creating a connection to an external process.
195 IPCChannelPosixTestListener listener(false);
196 IPC::ChannelHandle chan_handle(kConnectionSocketTestName);
197 SetUpSocket(&chan_handle, IPC::Channel::MODE_NAMED_SERVER);
198 IPC::Channel channel(chan_handle, IPC::Channel::MODE_NAMED_SERVER, &listener);
199 ASSERT_TRUE(channel.Connect());
200 ASSERT_TRUE(channel.AcceptsConnections());
201 ASSERT_FALSE(channel.HasAcceptedConnection());
202
203 base::ProcessHandle handle = SpawnChild("IPCChannelPosixTestConnectionProc",
204 false);
205 ASSERT_TRUE(handle);
206 SpinRunLoop(TestTimeouts::action_timeout_ms());
207 ASSERT_EQ(IPCChannelPosixTestListener::CONNECTED, listener.status());
208 ASSERT_TRUE(channel.HasAcceptedConnection());
209 IPC::Message* message = new IPC::Message(0, // routing_id
210 QUIT_MESSAGE, // message type
211 IPC::Message::PRIORITY_NORMAL);
212 channel.Send(message);
213 SpinRunLoop(TestTimeouts::action_timeout_ms());
214 int exit_code = 0;
215 EXPECT_TRUE(base::WaitForExitCode(handle, &exit_code));
216 EXPECT_EQ(0, exit_code);
217 ASSERT_EQ(IPCChannelPosixTestListener::CHANNEL_ERROR, listener.status());
218 ASSERT_FALSE(channel.HasAcceptedConnection());
219 }
220
221 TEST_F(IPCChannelPosixTest, ResetState) {
222 // Test creating a connection to an external process. Close the connection,
223 // but continue to listen and make sure another external process can connect
224 // to us.
225 IPCChannelPosixTestListener listener(false);
226 IPC::ChannelHandle chan_handle(kConnectionSocketTestName);
227 SetUpSocket(&chan_handle, IPC::Channel::MODE_NAMED_SERVER);
228 IPC::Channel channel(chan_handle, IPC::Channel::MODE_NAMED_SERVER, &listener);
229 ASSERT_TRUE(channel.Connect());
230 ASSERT_TRUE(channel.AcceptsConnections());
231 ASSERT_FALSE(channel.HasAcceptedConnection());
232
233 base::ProcessHandle handle = SpawnChild("IPCChannelPosixTestConnectionProc",
234 false);
235 ASSERT_TRUE(handle);
236 SpinRunLoop(TestTimeouts::action_timeout_ms());
237 ASSERT_EQ(IPCChannelPosixTestListener::CONNECTED, listener.status());
238 ASSERT_TRUE(channel.HasAcceptedConnection());
239 channel.ResetToAcceptingConnectionState();
240 ASSERT_FALSE(channel.HasAcceptedConnection());
241
242 base::ProcessHandle handle2 = SpawnChild("IPCChannelPosixTestConnectionProc",
243 false);
244 ASSERT_TRUE(handle2);
245 SpinRunLoop(TestTimeouts::action_timeout_ms());
246 ASSERT_EQ(IPCChannelPosixTestListener::CONNECTED, listener.status());
247 ASSERT_TRUE(channel.HasAcceptedConnection());
248 IPC::Message* message = new IPC::Message(0, // routing_id
249 QUIT_MESSAGE, // message type
250 IPC::Message::PRIORITY_NORMAL);
251 channel.Send(message);
252 SpinRunLoop(TestTimeouts::action_timeout_ms());
253 EXPECT_TRUE(base::KillProcess(handle, 0, false));
254 int exit_code = 0;
255 EXPECT_TRUE(base::WaitForExitCode(handle2, &exit_code));
256 EXPECT_EQ(0, exit_code);
257 ASSERT_EQ(IPCChannelPosixTestListener::CHANNEL_ERROR, listener.status());
258 ASSERT_FALSE(channel.HasAcceptedConnection());
259 }
260
261 TEST_F(IPCChannelPosixTest, MultiConnection) {
262 // Test setting up a connection to an external process, and then have
263 // another external process attempt to connect to us.
264 IPCChannelPosixTestListener listener(false);
265 IPC::ChannelHandle chan_handle(kConnectionSocketTestName);
266 SetUpSocket(&chan_handle, IPC::Channel::MODE_NAMED_SERVER);
267 IPC::Channel channel(chan_handle, IPC::Channel::MODE_NAMED_SERVER, &listener);
268 ASSERT_TRUE(channel.Connect());
269 ASSERT_TRUE(channel.AcceptsConnections());
270 ASSERT_FALSE(channel.HasAcceptedConnection());
271
272 base::ProcessHandle handle = SpawnChild("IPCChannelPosixTestConnectionProc",
273 false);
274 ASSERT_TRUE(handle);
275 SpinRunLoop(TestTimeouts::action_timeout_ms());
276 ASSERT_EQ(IPCChannelPosixTestListener::CONNECTED, listener.status());
277 ASSERT_TRUE(channel.HasAcceptedConnection());
278 base::ProcessHandle handle2 = SpawnChild("IPCChannelPosixFailConnectionProc",
279 false);
280 ASSERT_TRUE(handle2);
281 SpinRunLoop(TestTimeouts::action_timeout_ms());
282 int exit_code = 0;
283 EXPECT_TRUE(base::WaitForExitCode(handle2, &exit_code));
284 EXPECT_EQ(exit_code, 0);
285 ASSERT_EQ(IPCChannelPosixTestListener::DENIED, listener.status());
286 ASSERT_TRUE(channel.HasAcceptedConnection());
287 IPC::Message* message = new IPC::Message(0, // routing_id
288 QUIT_MESSAGE, // message type
289 IPC::Message::PRIORITY_NORMAL);
290 channel.Send(message);
291 SpinRunLoop(TestTimeouts::action_timeout_ms());
292 EXPECT_TRUE(base::WaitForExitCode(handle, &exit_code));
293 EXPECT_EQ(exit_code, 0);
294 ASSERT_EQ(IPCChannelPosixTestListener::CHANNEL_ERROR, listener.status());
295 ASSERT_FALSE(channel.HasAcceptedConnection());
296 }
297
298 // A long running process that connects to us
299 MULTIPROCESS_TEST_MAIN(IPCChannelPosixTestConnectionProc) {
300 MessageLoopForIO message_loop;
301 IPCChannelPosixTestListener listener(true);
302 IPC::ChannelHandle handle(IPCChannelPosixTest::kConnectionSocketTestName);
303 IPCChannelPosixTest::SetUpSocket(&handle, IPC::Channel::MODE_NAMED_CLIENT);
304 IPC::Channel channel(handle, IPC::Channel::MODE_NAMED_CLIENT, &listener);
305 EXPECT_TRUE(channel.Connect());
306 IPCChannelPosixTest::SpinRunLoop(TestTimeouts::action_timeout_ms());
307 EXPECT_EQ(IPCChannelPosixTestListener::MESSAGE_RECEIVED, listener.status());
308 return 0;
309 }
310
311 // Simple external process that shouldn't be able to connect to us.
312 MULTIPROCESS_TEST_MAIN(IPCChannelPosixFailConnectionProc) {
313 MessageLoopForIO message_loop;
314 IPCChannelPosixTestListener listener(false);
315 IPC::ChannelHandle handle(IPCChannelPosixTest::kConnectionSocketTestName);
316 IPCChannelPosixTest::SetUpSocket(&handle, IPC::Channel::MODE_NAMED_CLIENT);
317 IPC::Channel channel(handle, IPC::Channel::MODE_NAMED_CLIENT, &listener);
318
319 // In this case connect may succeed or fail depending on if the packet
320 // actually gets sent at sendmsg. Since we never delay on send, we may not
321 // see the error. However even if connect succeeds, eventually we will get an
322 // error back since the channel will be closed when we attempt to read from
323 // it.
324 bool connected = channel.Connect();
325 if (connected) {
326 IPCChannelPosixTest::SpinRunLoop(TestTimeouts::action_timeout_ms());
327 EXPECT_EQ(IPCChannelPosixTestListener::CHANNEL_ERROR, listener.status());
328 } else {
329 EXPECT_EQ(IPCChannelPosixTestListener::DISCONNECTED, listener.status());
330 }
331 return 0;
332 }
333
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