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Side by Side Diff: mojo/embedder/platform_channel_pair_posix_unittest.cc

Issue 621153003: Move mojo edk into mojo/edk (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: fix checkdeps Created 6 years, 2 months ago
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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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