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 "net/socket/unix_domain_server_socket_posix.h"
6
7 #include <memory>
8 #include <vector>
9
10 #include "base/bind.h"
11 #include "base/files/file_path.h"
12 #include "base/files/scoped_temp_dir.h"
13 #include "base/run_loop.h"
14 #include "base/stl_util.h"
15 #include "base/test/task_environment.h"
16 #include "net/base/io_buffer.h"
17 #include "net/base/net_errors.h"
18 #include "net/base/test_completion_callback.h"
19 #include "net/socket/unix_domain_client_socket_posix.h"
20 #include "net/test/gtest_util.h"
21 #include "testing/gmock/include/gmock/gmock.h"
22 #include "testing/gtest/include/gtest/gtest.h"
23
24 using net::test::IsError;
25 using net::test::IsOk;
26
27 namespace net {
28 namespace {
29
30 const char kSocketFilename[] = "socket_for_testing";
31 const char kInvalidSocketPath[] = "/invalid/path";
32
UserCanConnectCallback(bool allow_user,const UnixDomainServerSocket::Credentials & credentials)33 bool UserCanConnectCallback(bool allow_user,
34 const UnixDomainServerSocket::Credentials& credentials) {
35 // Here peers are running in same process.
36 #if defined(OS_LINUX) || defined(OS_CHROMEOS) || defined(OS_ANDROID)
37 EXPECT_EQ(getpid(), credentials.process_id);
38 #endif
39 EXPECT_EQ(getuid(), credentials.user_id);
40 EXPECT_EQ(getgid(), credentials.group_id);
41 return allow_user;
42 }
43
CreateAuthCallback(bool allow_user)44 UnixDomainServerSocket::AuthCallback CreateAuthCallback(bool allow_user) {
45 return base::BindRepeating(&UserCanConnectCallback, allow_user);
46 }
47
48 class UnixDomainServerSocketTest : public testing::Test {
49 protected:
UnixDomainServerSocketTest()50 UnixDomainServerSocketTest() {
51 EXPECT_TRUE(temp_dir_.CreateUniqueTempDir());
52 socket_path_ = temp_dir_.GetPath().Append(kSocketFilename).value();
53 }
54
55 base::ScopedTempDir temp_dir_;
56 std::string socket_path_;
57 };
58
TEST_F(UnixDomainServerSocketTest,ListenWithInvalidPath)59 TEST_F(UnixDomainServerSocketTest, ListenWithInvalidPath) {
60 const bool kUseAbstractNamespace = false;
61 UnixDomainServerSocket server_socket(CreateAuthCallback(true),
62 kUseAbstractNamespace);
63 EXPECT_EQ(ERR_FILE_NOT_FOUND,
64 server_socket.BindAndListen(kInvalidSocketPath, /*backlog=*/1));
65 }
66
TEST_F(UnixDomainServerSocketTest,ListenWithInvalidPathWithAbstractNamespace)67 TEST_F(UnixDomainServerSocketTest, ListenWithInvalidPathWithAbstractNamespace) {
68 const bool kUseAbstractNamespace = true;
69 UnixDomainServerSocket server_socket(CreateAuthCallback(true),
70 kUseAbstractNamespace);
71 #if defined(OS_ANDROID) || defined(OS_LINUX) || defined(OS_CHROMEOS)
72 EXPECT_THAT(server_socket.BindAndListen(kInvalidSocketPath, /*backlog=*/1),
73 IsOk());
74 #else
75 EXPECT_EQ(ERR_ADDRESS_INVALID,
76 server_socket.BindAndListen(kInvalidSocketPath, /*backlog=*/1));
77 #endif
78 }
79
TEST_F(UnixDomainServerSocketTest,ListenAgainAfterFailureWithInvalidPath)80 TEST_F(UnixDomainServerSocketTest, ListenAgainAfterFailureWithInvalidPath) {
81 const bool kUseAbstractNamespace = false;
82 UnixDomainServerSocket server_socket(CreateAuthCallback(true),
83 kUseAbstractNamespace);
84 EXPECT_EQ(ERR_FILE_NOT_FOUND,
85 server_socket.BindAndListen(kInvalidSocketPath, /*backlog=*/1));
86 EXPECT_THAT(server_socket.BindAndListen(socket_path_, /*backlog=*/1), IsOk());
87 }
88
TEST_F(UnixDomainServerSocketTest,AcceptWithForbiddenUser)89 TEST_F(UnixDomainServerSocketTest, AcceptWithForbiddenUser) {
90 base::test::TaskEnvironment task_environment(
91 base::test::TaskEnvironment::MainThreadType::IO);
92
93 const bool kUseAbstractNamespace = false;
94
95 UnixDomainServerSocket server_socket(CreateAuthCallback(false),
96 kUseAbstractNamespace);
97 EXPECT_THAT(server_socket.BindAndListen(socket_path_, /*backlog=*/1), IsOk());
98
99 std::unique_ptr<StreamSocket> accepted_socket;
100 TestCompletionCallback accept_callback;
101 EXPECT_EQ(ERR_IO_PENDING,
102 server_socket.Accept(&accepted_socket, accept_callback.callback()));
103 EXPECT_FALSE(accepted_socket);
104
105 UnixDomainClientSocket client_socket(socket_path_, kUseAbstractNamespace);
106 EXPECT_FALSE(client_socket.IsConnected());
107
108 // Connect() will return OK before the server rejects the connection.
109 TestCompletionCallback connect_callback;
110 int rv = connect_callback.GetResult(
111 client_socket.Connect(connect_callback.callback()));
112 ASSERT_THAT(rv, IsOk());
113
114 // Try to read from the socket.
115 const int read_buffer_size = 10;
116 scoped_refptr<IOBuffer> read_buffer =
117 base::MakeRefCounted<IOBuffer>(read_buffer_size);
118 TestCompletionCallback read_callback;
119 rv = read_callback.GetResult(client_socket.Read(
120 read_buffer.get(), read_buffer_size, read_callback.callback()));
121
122 // The server should have disconnected gracefully, without sending any data.
123 ASSERT_EQ(0, rv);
124 EXPECT_FALSE(client_socket.IsConnected());
125
126 // The server socket should not have called |accept_callback| or modified
127 // |accepted_socket|.
128 EXPECT_FALSE(accept_callback.have_result());
129 EXPECT_FALSE(accepted_socket);
130 }
131
TEST_F(UnixDomainServerSocketTest,UnimplementedMethodsFail)132 TEST_F(UnixDomainServerSocketTest, UnimplementedMethodsFail) {
133 const bool kUseAbstractNamespace = false;
134 UnixDomainServerSocket server_socket(CreateAuthCallback(true),
135 kUseAbstractNamespace);
136
137 IPEndPoint ep;
138 EXPECT_THAT(server_socket.Listen(ep, 0), IsError(ERR_NOT_IMPLEMENTED));
139 EXPECT_EQ(ERR_NOT_IMPLEMENTED,
140 server_socket.ListenWithAddressAndPort(kInvalidSocketPath,
141 0,
142 /*backlog=*/1));
143
144 EXPECT_THAT(server_socket.GetLocalAddress(&ep), IsError(ERR_ADDRESS_INVALID));
145 }
146
147 // Normal cases including read/write are tested by UnixDomainClientSocketTest.
148
149 } // namespace
150 } // namespace net
151