1/*
2 * Copyright (C) 2024 HiHope Open Source Organization.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16#include <cerrno>
17#include <cstdio>
18#include <cstdlib>
19#include <string>
20#include <fcntl.h>
21#include <unistd.h>
22#include <vector>
23#include <arpa/inet.h>
24#include <gtest/gtest.h>
25#include <netinet/in.h>
26#include <sys/stat.h>
27#include <sys/socket.h>
28#include <sys/types.h>
29#include "securec.h"
30
31using namespace testing::ext;
32
33class HatsAccept4Test : public testing::Test {
34public:
35    static void SetUpTestCase();
36    static void TearDownTestCase();
37    void SetUp();
38    void TearDown();
39private:
40};
41void HatsAccept4Test::SetUp()
42{
43}
44void HatsAccept4Test::TearDown()
45{
46}
47void HatsAccept4Test::SetUpTestCase()
48{
49}
50void HatsAccept4Test::TearDownTestCase()
51{
52}
53
54static const int BAD_SOCKET_FD = -1;
55static const int TEST_PORT = 21357;
56static const char *TEST_LOCAL_IP = "127.0.0.1";
57
58enum AcceptType {
59    GET_NONE = 0,
60    GET_CLIENT_SOCKET_ADDR_TEST,
61    GET_CLIENT_SOCKET_ADDR_LEN_TEST,
62};
63
64static void SocketServiceStart(int *fd)
65{
66    int ret;
67    int socketFd = -1;
68    int32_t backLog = 2;
69    int32_t optVal = 1;
70    struct sockaddr_in serAddr = {
71        .sin_family = AF_INET,
72        .sin_port = htons(TEST_PORT),
73        .sin_addr = {
74            .s_addr = inet_addr(TEST_LOCAL_IP),
75        }
76    };
77
78    socketFd = socket(AF_INET, SOCK_STREAM, 0);
79    ASSERT_TRUE(socketFd > 0);
80
81    ret = setsockopt(socketFd, SOL_SOCKET, SO_REUSEADDR, &optVal, sizeof(optVal));
82    ASSERT_TRUE(ret == 0);
83
84    ret = bind(socketFd, reinterpret_cast<struct sockaddr *>(&serAddr), sizeof(serAddr));
85    ASSERT_TRUE(ret == 0);
86
87    ret = listen(socketFd, backLog);
88    ASSERT_EQ(ret, 0);
89
90    *fd = socketFd;
91}
92
93static void *ClientConnect(void *arg)
94{
95    int ret;
96    int socketFd = -1;
97    struct sockaddr_in serAddr = {
98        .sin_family = AF_INET,
99        .sin_port = htons(TEST_PORT),
100        .sin_addr = {
101            .s_addr = inet_addr(TEST_LOCAL_IP),
102        }
103    };
104    socketFd = socket(AF_INET, SOCK_STREAM, 0);
105    EXPECT_TRUE(socketFd > 0);
106    ret = connect(socketFd, reinterpret_cast<struct sockaddr *>(&serAddr), sizeof(struct sockaddr_in));
107    EXPECT_EQ(ret, 0);
108    close(socketFd);
109    return nullptr;
110}
111
112/*
113 * @tc.number : SUB_KERNEL_SYSCALL_ACCEPT4_0100
114 * @tc.name   : Accept4ValidSockfdSuccess_0001
115 * @tc.desc   : accept4 valid sockfd success.
116 * @tc.size   : MediumTest
117 * @tc.type   : Function
118 * @tc.level  : Level 1
119 */
120HWTEST_F(HatsAccept4Test, Accept4ValidSockfdSuccess_0001, Function | MediumTest | Level1)
121{
122    int pid = -1;
123    int socketFd = -1;
124    int acceptFd = -1;
125    int status = 0;
126    struct sockaddr_in cliAddr;
127    socklen_t addrlen = sizeof(struct sockaddr_in);
128    SocketServiceStart(&socketFd);
129    ASSERT_TRUE(socketFd > 0);
130    if ((pid = fork()) == 0) {
131        ClientConnect(nullptr);
132        exit(0);
133    }
134    acceptFd = accept4(socketFd, reinterpret_cast<struct sockaddr *>(&cliAddr), &addrlen, 0);
135    EXPECT_TRUE(acceptFd > 0);
136
137    close(acceptFd);
138    close(socketFd);
139    waitpid(pid, &status, 0);
140    EXPECT_TRUE(status == 0);
141}
142
143/*
144 * @tc.number : SUB_KERNEL_SYSCALL_ACCEPT4_0200
145 * @tc.name   : Accept4GetClientAddrSuccess_0002
146 * @tc.desc   : accept4 get client addr success.
147 * @tc.size   : MediumTest
148 * @tc.type   : Function
149 * @tc.level  : Level 1
150 */
151HWTEST_F(HatsAccept4Test, Accept4GetClientAddrSuccess_0002, Function | MediumTest | Level1)
152{
153    int pid = -1;
154    int acceptFd = -1;
155    int socketFd = -1;
156    int status = 0;
157    struct sockaddr_in cliAddr = { 0 };
158    socklen_t addrlen = sizeof(struct sockaddr_in);
159    SocketServiceStart(&socketFd);
160    ASSERT_TRUE(socketFd > 0);
161    if ((pid = fork()) == 0) {
162        ClientConnect(nullptr);
163        exit(0);
164    }
165    acceptFd = accept4(socketFd, reinterpret_cast<struct sockaddr *>(&cliAddr), &addrlen, 0);
166    EXPECT_STREQ(inet_ntoa(cliAddr.sin_addr), TEST_LOCAL_IP);
167    close(acceptFd);
168    close(socketFd);
169    waitpid(pid, &status, 0);
170    EXPECT_TRUE(status == 0);
171}
172
173/*
174 * @tc.number : SUB_KERNEL_SYSCALL_ACCEPT4_0300
175 * @tc.name   : Accept4GetClientAddrSuccess_0003
176 * @tc.desc   : accept4 get client addr len success.
177 * @tc.size   : MediumTest
178 * @tc.type   : Function
179 * @tc.level  : Level 1
180 */
181HWTEST_F(HatsAccept4Test, Accept4GetClientAddrSuccess_0003, Function | MediumTest | Level1)
182{
183    int pid = -1;
184    int acceptFd = -1;
185    int socketFd = -1;
186    int status = 0;
187    struct sockaddr_in cliAddr = { 0 };
188    socklen_t addrlen = sizeof(struct sockaddr_in);
189    SocketServiceStart(&socketFd);
190    ASSERT_TRUE(socketFd > 0);
191    if ((pid = fork()) == 0) {
192        ClientConnect(nullptr);
193        exit(0);
194    }
195    acceptFd = accept4(socketFd, reinterpret_cast<struct sockaddr *>(&cliAddr), &addrlen, 0);
196    EXPECT_EQ(addrlen, sizeof(struct sockaddr));
197    close(acceptFd);
198    close(socketFd);
199    waitpid(pid, &status, 0);
200    EXPECT_TRUE(status == 0);
201}
202
203/*
204 * @tc.number : SUB_KERNEL_SYSCALL_ACCEPT4_0400
205 * @tc.name   : Accept4InvalidFd_0004
206 * @tc.desc   : accept4 use invalid socket fd, return -1, and set errno.
207 * @tc.size   : MediumTest
208 * @tc.type   : Function
209 * @tc.level  : Level 2
210 */
211HWTEST_F(HatsAccept4Test, Accept4InvalidFd_0004, Function | MediumTest | Level2)
212{
213    int ret = accept4(BAD_SOCKET_FD, nullptr, nullptr, 0);
214    EXPECT_EQ(ret, -1);
215    EXPECT_EQ(errno, EBADF);
216    ret = accept4(STDIN_FILENO, nullptr, nullptr, 0);
217    EXPECT_EQ(ret, -1);
218    EXPECT_EQ(errno, ENOTSOCK);
219}
220
221/*
222 * @tc.number : SUB_KERNEL_SYSCALL_ACCEPT4_0500
223 * @tc.name   : Accept4FlagTestSuccess_0005
224 * @tc.desc   : accept4 flag SOCK_NONBLOCK and SOCK_CLOEXEC test success.
225 * @tc.size   : MediumTest
226 * @tc.type   : Function
227 * @tc.level  : Level 1
228 */
229HWTEST_F(HatsAccept4Test, Accept4FlagTestSuccess_0005, Function | MediumTest | Level1)
230{
231    int socketFd = -1;
232    int acceptFd = -1;
233    pthread_t thread;
234    struct sockaddr_in cliAddr;
235    socklen_t addrlen = sizeof(struct sockaddr_in);
236    SocketServiceStart(&socketFd);
237    ASSERT_TRUE(socketFd > 0);
238
239    pthread_create(&thread, nullptr, ClientConnect, nullptr);
240    acceptFd = accept4(socketFd, reinterpret_cast<struct sockaddr *>(&cliAddr), &addrlen, SOCK_NONBLOCK | SOCK_CLOEXEC);
241    EXPECT_TRUE(acceptFd > 0);
242
243    close(acceptFd);
244    close(socketFd);
245    pthread_join(thread, nullptr);
246}
247