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1 // Copyright 2014 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 "mojo/embedder/platform_channel_pair.h" | |
6 | |
7 #include <errno.h> | |
8 #include <poll.h> | |
9 #include <signal.h> | |
10 #include <stdio.h> | |
11 #include <sys/socket.h> | |
12 #include <sys/types.h> | |
13 #include <sys/uio.h> | |
14 #include <unistd.h> | |
15 | |
16 #include <deque> | |
17 | |
18 #include "base/files/file_path.h" | |
19 #include "base/files/file_util.h" | |
20 #include "base/files/scoped_file.h" | |
21 #include "base/files/scoped_temp_dir.h" | |
22 #include "base/logging.h" | |
23 #include "base/macros.h" | |
24 #include "mojo/common/test/test_utils.h" | |
25 #include "mojo/embedder/platform_channel_utils_posix.h" | |
26 #include "mojo/embedder/platform_handle.h" | |
27 #include "mojo/embedder/platform_handle_vector.h" | |
28 #include "mojo/embedder/scoped_platform_handle.h" | |
29 #include "testing/gtest/include/gtest/gtest.h" | |
30 | |
31 namespace mojo { | |
32 namespace embedder { | |
33 namespace { | |
34 | |
35 void WaitReadable(PlatformHandle h) { | |
36 struct pollfd pfds = {}; | |
37 pfds.fd = h.fd; | |
38 pfds.events = POLLIN; | |
39 CHECK_EQ(poll(&pfds, 1, -1), 1); | |
40 } | |
41 | |
42 class PlatformChannelPairPosixTest : public testing::Test { | |
43 public: | |
44 PlatformChannelPairPosixTest() {} | |
45 virtual ~PlatformChannelPairPosixTest() {} | |
46 | |
47 virtual void SetUp() override { | |
48 // Make sure |SIGPIPE| isn't being ignored. | |
49 struct sigaction action = {}; | |
50 action.sa_handler = SIG_DFL; | |
51 ASSERT_EQ(0, sigaction(SIGPIPE, &action, &old_action_)); | |
52 } | |
53 | |
54 virtual void TearDown() override { | |
55 // Restore the |SIGPIPE| handler. | |
56 ASSERT_EQ(0, sigaction(SIGPIPE, &old_action_, nullptr)); | |
57 } | |
58 | |
59 private: | |
60 struct sigaction old_action_; | |
61 | |
62 DISALLOW_COPY_AND_ASSIGN(PlatformChannelPairPosixTest); | |
63 }; | |
64 | |
65 TEST_F(PlatformChannelPairPosixTest, NoSigPipe) { | |
66 PlatformChannelPair channel_pair; | |
67 ScopedPlatformHandle server_handle = channel_pair.PassServerHandle().Pass(); | |
68 ScopedPlatformHandle client_handle = channel_pair.PassClientHandle().Pass(); | |
69 | |
70 // Write to the client. | |
71 static const char kHello[] = "hello"; | |
72 EXPECT_EQ(static_cast<ssize_t>(sizeof(kHello)), | |
73 write(client_handle.get().fd, kHello, sizeof(kHello))); | |
74 | |
75 // Close the client. | |
76 client_handle.reset(); | |
77 | |
78 // Read from the server; this should be okay. | |
79 char buffer[100] = {}; | |
80 EXPECT_EQ(static_cast<ssize_t>(sizeof(kHello)), | |
81 read(server_handle.get().fd, buffer, sizeof(buffer))); | |
82 EXPECT_STREQ(kHello, buffer); | |
83 | |
84 // Try reading again. | |
85 ssize_t result = read(server_handle.get().fd, buffer, sizeof(buffer)); | |
86 // We should probably get zero (for "end of file"), but -1 would also be okay. | |
87 EXPECT_TRUE(result == 0 || result == -1); | |
88 if (result == -1) | |
89 PLOG(WARNING) << "read (expected 0 for EOF)"; | |
90 | |
91 // Test our replacement for |write()|/|send()|. | |
92 result = PlatformChannelWrite(server_handle.get(), kHello, sizeof(kHello)); | |
93 EXPECT_EQ(-1, result); | |
94 if (errno != EPIPE) | |
95 PLOG(WARNING) << "write (expected EPIPE)"; | |
96 | |
97 // Test our replacement for |writev()|/|sendv()|. | |
98 struct iovec iov[2] = {{const_cast<char*>(kHello), sizeof(kHello)}, | |
99 {const_cast<char*>(kHello), sizeof(kHello)}}; | |
100 result = PlatformChannelWritev(server_handle.get(), iov, 2); | |
101 EXPECT_EQ(-1, result); | |
102 if (errno != EPIPE) | |
103 PLOG(WARNING) << "write (expected EPIPE)"; | |
104 } | |
105 | |
106 TEST_F(PlatformChannelPairPosixTest, SendReceiveData) { | |
107 PlatformChannelPair channel_pair; | |
108 ScopedPlatformHandle server_handle = channel_pair.PassServerHandle().Pass(); | |
109 ScopedPlatformHandle client_handle = channel_pair.PassClientHandle().Pass(); | |
110 | |
111 for (size_t i = 0; i < 10; i++) { | |
112 std::string send_string(1 << i, 'A' + i); | |
113 | |
114 EXPECT_EQ(static_cast<ssize_t>(send_string.size()), | |
115 PlatformChannelWrite( | |
116 server_handle.get(), send_string.data(), send_string.size())); | |
117 | |
118 WaitReadable(client_handle.get()); | |
119 | |
120 char buf[10000] = {}; | |
121 std::deque<PlatformHandle> received_handles; | |
122 ssize_t result = PlatformChannelRecvmsg( | |
123 client_handle.get(), buf, sizeof(buf), &received_handles); | |
124 EXPECT_EQ(static_cast<ssize_t>(send_string.size()), result); | |
125 EXPECT_EQ(send_string, std::string(buf, static_cast<size_t>(result))); | |
126 EXPECT_TRUE(received_handles.empty()); | |
127 } | |
128 } | |
129 | |
130 TEST_F(PlatformChannelPairPosixTest, SendReceiveFDs) { | |
131 base::ScopedTempDir temp_dir; | |
132 ASSERT_TRUE(temp_dir.CreateUniqueTempDir()); | |
133 | |
134 static const char kHello[] = "hello"; | |
135 | |
136 PlatformChannelPair channel_pair; | |
137 ScopedPlatformHandle server_handle = channel_pair.PassServerHandle().Pass(); | |
138 ScopedPlatformHandle client_handle = channel_pair.PassClientHandle().Pass(); | |
139 | |
140 for (size_t i = 1; i < kPlatformChannelMaxNumHandles; i++) { | |
141 // Make |i| files, with the j-th file consisting of j copies of the digit i. | |
142 PlatformHandleVector platform_handles; | |
143 for (size_t j = 1; j <= i; j++) { | |
144 base::FilePath unused; | |
145 base::ScopedFILE fp( | |
146 base::CreateAndOpenTemporaryFileInDir(temp_dir.path(), &unused)); | |
147 ASSERT_TRUE(fp); | |
148 ASSERT_EQ(j, fwrite(std::string(j, '0' + i).data(), 1, j, fp.get())); | |
149 platform_handles.push_back( | |
150 test::PlatformHandleFromFILE(fp.Pass()).release()); | |
151 ASSERT_TRUE(platform_handles.back().is_valid()); | |
152 } | |
153 | |
154 // Send the FDs (+ "hello"). | |
155 struct iovec iov = {const_cast<char*>(kHello), sizeof(kHello)}; | |
156 // We assume that the |sendmsg()| actually sends all the data. | |
157 EXPECT_EQ(static_cast<ssize_t>(sizeof(kHello)), | |
158 PlatformChannelSendmsgWithHandles(server_handle.get(), | |
159 &iov, | |
160 1, | |
161 &platform_handles[0], | |
162 platform_handles.size())); | |
163 | |
164 WaitReadable(client_handle.get()); | |
165 | |
166 char buf[100] = {}; | |
167 std::deque<PlatformHandle> received_handles; | |
168 // We assume that the |recvmsg()| actually reads all the data. | |
169 EXPECT_EQ(static_cast<ssize_t>(sizeof(kHello)), | |
170 PlatformChannelRecvmsg( | |
171 client_handle.get(), buf, sizeof(buf), &received_handles)); | |
172 EXPECT_STREQ(kHello, buf); | |
173 EXPECT_EQ(i, received_handles.size()); | |
174 | |
175 for (size_t j = 0; !received_handles.empty(); j++) { | |
176 base::ScopedFILE fp(test::FILEFromPlatformHandle( | |
177 ScopedPlatformHandle(received_handles.front()), "rb")); | |
178 received_handles.pop_front(); | |
179 ASSERT_TRUE(fp); | |
180 rewind(fp.get()); | |
181 char read_buf[100]; | |
182 size_t bytes_read = fread(read_buf, 1, sizeof(read_buf), fp.get()); | |
183 EXPECT_EQ(j + 1, bytes_read); | |
184 EXPECT_EQ(std::string(j + 1, '0' + i), std::string(read_buf, bytes_read)); | |
185 } | |
186 } | |
187 } | |
188 | |
189 TEST_F(PlatformChannelPairPosixTest, AppendReceivedFDs) { | |
190 base::ScopedTempDir temp_dir; | |
191 ASSERT_TRUE(temp_dir.CreateUniqueTempDir()); | |
192 | |
193 static const char kHello[] = "hello"; | |
194 | |
195 PlatformChannelPair channel_pair; | |
196 ScopedPlatformHandle server_handle = channel_pair.PassServerHandle().Pass(); | |
197 ScopedPlatformHandle client_handle = channel_pair.PassClientHandle().Pass(); | |
198 | |
199 const std::string file_contents("hello world"); | |
200 | |
201 { | |
202 base::FilePath unused; | |
203 base::ScopedFILE fp( | |
204 base::CreateAndOpenTemporaryFileInDir(temp_dir.path(), &unused)); | |
205 ASSERT_TRUE(fp); | |
206 ASSERT_EQ(file_contents.size(), | |
207 fwrite(file_contents.data(), 1, file_contents.size(), fp.get())); | |
208 PlatformHandleVector platform_handles; | |
209 platform_handles.push_back( | |
210 test::PlatformHandleFromFILE(fp.Pass()).release()); | |
211 ASSERT_TRUE(platform_handles.back().is_valid()); | |
212 | |
213 // Send the FD (+ "hello"). | |
214 struct iovec iov = {const_cast<char*>(kHello), sizeof(kHello)}; | |
215 // We assume that the |sendmsg()| actually sends all the data. | |
216 EXPECT_EQ(static_cast<ssize_t>(sizeof(kHello)), | |
217 PlatformChannelSendmsgWithHandles(server_handle.get(), | |
218 &iov, | |
219 1, | |
220 &platform_handles[0], | |
221 platform_handles.size())); | |
222 } | |
223 | |
224 WaitReadable(client_handle.get()); | |
225 | |
226 // Start with an invalid handle in the deque. | |
227 std::deque<PlatformHandle> received_handles; | |
228 received_handles.push_back(PlatformHandle()); | |
229 | |
230 char buf[100] = {}; | |
231 // We assume that the |recvmsg()| actually reads all the data. | |
232 EXPECT_EQ(static_cast<ssize_t>(sizeof(kHello)), | |
233 PlatformChannelRecvmsg( | |
234 client_handle.get(), buf, sizeof(buf), &received_handles)); | |
235 EXPECT_STREQ(kHello, buf); | |
236 ASSERT_EQ(2u, received_handles.size()); | |
237 EXPECT_FALSE(received_handles[0].is_valid()); | |
238 EXPECT_TRUE(received_handles[1].is_valid()); | |
239 | |
240 { | |
241 base::ScopedFILE fp(test::FILEFromPlatformHandle( | |
242 ScopedPlatformHandle(received_handles[1]), "rb")); | |
243 received_handles[1] = PlatformHandle(); | |
244 ASSERT_TRUE(fp); | |
245 rewind(fp.get()); | |
246 char read_buf[100]; | |
247 size_t bytes_read = fread(read_buf, 1, sizeof(read_buf), fp.get()); | |
248 EXPECT_EQ(file_contents.size(), bytes_read); | |
249 EXPECT_EQ(file_contents, std::string(read_buf, bytes_read)); | |
250 } | |
251 } | |
252 | |
253 } // namespace | |
254 } // namespace embedder | |
255 } // namespace mojo | |
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