1 /*
2  * This file is part of net-y-unix strace test.
3  *
4  * Copyright (c) 2013-2016 Dmitry V. Levin <ldv@altlinux.org>
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  * 3. The name of the author may not be used to endorse or promote products
16  *    derived from this software without specific prior written permission.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28  */
29 
30 #include "tests.h"
31 #include <assert.h>
32 #include <stddef.h>
33 #include <stdio.h>
34 #include <stdlib.h>
35 #include <string.h>
36 #include <unistd.h>
37 #include <sys/param.h>
38 #include <sys/socket.h>
39 #include <sys/un.h>
40 
41 int
main(int ac,const char ** av)42 main(int ac, const char **av)
43 {
44 	assert(ac == 2);
45 
46 	struct sockaddr_un addr = { .sun_family = AF_UNIX };
47 	unsigned int sun_path_len = strlen(av[1]);
48 	assert(sun_path_len > 0 && sun_path_len <= sizeof(addr.sun_path));
49 	strncpy(addr.sun_path, av[1], sizeof(addr.sun_path));
50 	struct sockaddr * const listen_sa = tail_memdup(&addr, sizeof(addr));
51 
52 	socklen_t * const len = tail_alloc(sizeof(socklen_t));
53 	*len = offsetof(struct sockaddr_un, sun_path) + strlen(av[1]) + 1;
54 	if (*len > sizeof(addr))
55 		*len = sizeof(addr);
56 
57 	int listen_fd = socket(AF_UNIX, SOCK_STREAM, 0);
58 	if (listen_fd < 0)
59 		perror_msg_and_skip("socket");
60 	unsigned long listen_inode = inode_of_sockfd(listen_fd);
61 	printf("socket(AF_UNIX, SOCK_STREAM, 0) = %d<socket:[%lu]>\n",
62 	       listen_fd, listen_inode);
63 
64 	(void) unlink(av[1]);
65 	if (bind(listen_fd, listen_sa, *len))
66 		perror_msg_and_skip("bind");
67 	printf("bind(%d<socket:[%lu]>, {sa_family=AF_UNIX, sun_path=\"%s\"}"
68 	       ", %u) = 0\n", listen_fd, listen_inode, av[1], (unsigned) *len);
69 
70 	if (listen(listen_fd, 1))
71 		perror_msg_and_skip("listen");
72 	printf("listen(%d<socket:[%lu]>, 1) = 0\n", listen_fd, listen_inode);
73 
74 	unsigned int * const optval = tail_alloc(sizeof(unsigned int));
75 	*len = sizeof(*optval);
76 	if (getsockopt(listen_fd, SOL_SOCKET, SO_PASSCRED, optval, len))
77 		perror_msg_and_fail("getsockopt");
78 	printf("getsockopt(%d<socket:[%lu]>, SOL_SOCKET, SO_PASSCRED"
79 	       ", [%u], [%u]) = 0\n",
80 	       listen_fd, listen_inode, *optval, (unsigned) *len);
81 
82 	memset(listen_sa, 0, sizeof(addr));
83 	*len = sizeof(addr);
84 	if (getsockname(listen_fd, listen_sa, len))
85 		perror_msg_and_fail("getsockname");
86 	printf("getsockname(%d<socket:[%lu]>, {sa_family=AF_UNIX"
87 	       ", sun_path=\"%s\"}, [%d->%d]) = 0\n", listen_fd, listen_inode,
88 	       av[1], (int) sizeof(addr), (int) *len);
89 
90 	int connect_fd = socket(AF_UNIX, SOCK_STREAM, 0);
91 	if (connect_fd < 0)
92 		perror_msg_and_fail("socket");
93 	unsigned long connect_inode = inode_of_sockfd(connect_fd);
94 	printf("socket(AF_UNIX, SOCK_STREAM, 0) = %d<socket:[%lu]>\n",
95 	       connect_fd, connect_inode);
96 
97 	if (connect(connect_fd, listen_sa, *len))
98 		perror_msg_and_fail("connect");
99 	printf("connect(%d<socket:[%lu]>, {sa_family=AF_UNIX"
100 	       ", sun_path=\"%s\"}, %u) = 0\n",
101 	       connect_fd, connect_inode, av[1], (unsigned) *len);
102 
103 	struct sockaddr * const accept_sa = tail_alloc(sizeof(addr));
104 	memset(accept_sa, 0, sizeof(addr));
105 	*len = sizeof(addr);
106 	int accept_fd = accept(listen_fd, accept_sa, len);
107 	if (accept_fd < 0)
108 		perror_msg_and_fail("accept");
109 	unsigned long accept_inode = inode_of_sockfd(accept_fd);
110 	printf("accept(%d<socket:[%lu]>, {sa_family=AF_UNIX}"
111 	       ", [%d->%d]) = %d<socket:[%lu]>\n",
112 	       listen_fd, listen_inode,
113 	       (int) sizeof(addr), (int) *len,
114 	       accept_fd, accept_inode);
115 
116 	memset(listen_sa, 0, sizeof(addr));
117 	*len = sizeof(addr);
118 	if (getpeername(connect_fd, listen_sa, len))
119 		perror_msg_and_fail("getpeername");
120 	printf("getpeername(%d<socket:[%lu]>, {sa_family=AF_UNIX"
121 	       ", sun_path=\"%s\"}, [%d->%d]) = 0\n", connect_fd, connect_inode,
122 	       av[1], (int) sizeof(addr), (int) *len);
123 
124 	char text[] = "text";
125 	assert(sendto(connect_fd, text, sizeof(text) - 1, MSG_DONTWAIT, NULL, 0)
126 	       == sizeof(text) - 1);
127 	printf("sendto(%d<socket:[%lu]>, \"%s\", %u, MSG_DONTWAIT"
128 	       ", NULL, 0) = %u\n",
129 	       connect_fd, connect_inode, text,
130 	       (unsigned) sizeof(text) - 1, (unsigned) sizeof(text) - 1);
131 
132 	assert(close(connect_fd) == 0);
133 	printf("close(%d<socket:[%lu]>) = 0\n", connect_fd, connect_inode);
134 
135 	assert(recvfrom(accept_fd, text, sizeof(text) - 1, MSG_DONTWAIT, NULL, NULL)
136 	       == sizeof(text) - 1);
137 	printf("recvfrom(%d<socket:[%lu]>, \"%s\", %u, MSG_DONTWAIT"
138 	       ", NULL, NULL) = %u\n",
139 	       accept_fd, accept_inode, text,
140 	       (unsigned) sizeof(text) - 1, (unsigned) sizeof(text) - 1);
141 
142 	assert(close(accept_fd) == 0);
143 	printf("close(%d<socket:[%lu]>) = 0\n", accept_fd, accept_inode);
144 
145 	connect_fd = socket(AF_UNIX, SOCK_STREAM, 0);
146 	if (connect_fd < 0)
147 		perror_msg_and_fail("socket");
148 	connect_inode = inode_of_sockfd(connect_fd);
149 	printf("socket(AF_UNIX, SOCK_STREAM, 0) = %d<socket:[%lu]>\n",
150 	       connect_fd, connect_inode);
151 
152 	*optval = 1;
153 	*len = sizeof(*optval);
154 	if (setsockopt(connect_fd, SOL_SOCKET, SO_PASSCRED, optval, *len))
155 		perror_msg_and_fail("setsockopt");
156 	printf("setsockopt(%d<socket:[%lu]>, SOL_SOCKET, SO_PASSCRED"
157 	       ", [%u], %u) = 0\n",
158 	       connect_fd, connect_inode, *optval, (unsigned) *len);
159 
160 	memset(listen_sa, 0, sizeof(addr));
161 	*len = sizeof(addr);
162 	if (getsockname(listen_fd, listen_sa, len))
163 		perror_msg_and_fail("getsockname");
164 	printf("getsockname(%d<socket:[%lu]>, {sa_family=AF_UNIX"
165 	       ", sun_path=\"%s\"}, [%d->%d]) = 0\n",
166 	       listen_fd, listen_inode, av[1],
167 	       (int) sizeof(addr), (int) *len);
168 
169 	if (connect(connect_fd, listen_sa, *len))
170 		perror_msg_and_fail("connect");
171 	printf("connect(%d<socket:[%lu]>, {sa_family=AF_UNIX"
172 	       ", sun_path=\"%s\"}, %u) = 0\n",
173 	       connect_fd, connect_inode, av[1], (unsigned) *len);
174 
175 	memset(accept_sa, 0, sizeof(addr));
176 	*len = sizeof(addr);
177 	accept_fd = accept(listen_fd, accept_sa, len);
178 	if (accept_fd < 0)
179 		perror_msg_and_fail("accept");
180 	accept_inode = inode_of_sockfd(accept_fd);
181 	const char * const sun_path1 =
182 		((struct sockaddr_un *) accept_sa) -> sun_path + 1;
183 	printf("accept(%d<socket:[%lu]>, {sa_family=AF_UNIX"
184 	       ", sun_path=@\"%s\"}, [%d->%d]) = %d<socket:[%lu]>\n",
185 	       listen_fd, listen_inode, sun_path1,
186 	       (int) sizeof(addr), (int) *len,
187 	       accept_fd, accept_inode);
188 
189 	memset(listen_sa, 0, sizeof(addr));
190 	*len = sizeof(addr);
191 	if (getpeername(connect_fd, listen_sa, len))
192 		perror_msg_and_fail("getpeername");
193 	printf("getpeername(%d<socket:[%lu]>, {sa_family=AF_UNIX"
194 	       ", sun_path=\"%s\"}, [%d->%d]) = 0\n",
195 	       connect_fd, connect_inode, av[1],
196 	       (int) sizeof(addr), (int) *len);
197 
198 	memset(accept_sa, 0, sizeof(addr));
199 	*len = sizeof(addr);
200 	if (getsockname(connect_fd, accept_sa, len))
201 		perror_msg_and_fail("getsockname");
202 	printf("getsockname(%d<socket:[%lu]>, {sa_family=AF_UNIX"
203 	       ", sun_path=@\"%s\"}, [%d->%d]) = 0\n",
204 	       connect_fd, connect_inode, sun_path1,
205 	       (int) sizeof(addr), (int) *len);
206 
207 	assert(sendto(connect_fd, text, sizeof(text) - 1, MSG_DONTWAIT, NULL, 0)
208 	       == sizeof(text) - 1);
209 	printf("sendto(%d<socket:[%lu]>, \"%s\", %u, MSG_DONTWAIT"
210 	       ", NULL, 0) = %u\n",
211 	       connect_fd, connect_inode, text,
212 	       (unsigned) sizeof(text) - 1, (unsigned) sizeof(text) - 1);
213 
214 	assert(close(connect_fd) == 0);
215 	printf("close(%d<socket:[%lu]>) = 0\n", connect_fd, connect_inode);
216 
217 	assert(recvfrom(accept_fd, text, sizeof(text) - 1, MSG_DONTWAIT, NULL, NULL)
218 	       == sizeof(text) - 1);
219 	printf("recvfrom(%d<socket:[%lu]>, \"%s\", %u, MSG_DONTWAIT"
220 	       ", NULL, NULL) = %u\n",
221 	       accept_fd, accept_inode, text,
222 	       (unsigned) sizeof(text) - 1, (unsigned) sizeof(text) - 1);
223 
224 	assert(close(accept_fd) == 0);
225 	printf("close(%d<socket:[%lu]>) = 0\n", accept_fd, accept_inode);
226 
227 	assert(unlink(av[1]) == 0);
228 
229 	assert(close(listen_fd) == 0);
230 	printf("close(%d<socket:[%lu]>) = 0\n",
231 	       listen_fd, listen_inode);
232 
233 	puts("+++ exited with 0 +++");
234 	return 0;
235 }
236