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      1 /*
      2  * This file is part of net-y-unix strace test.
      3  *
      4  * Copyright (c) 2013-2017 Dmitry V. Levin <ldv (at) altlinux.org>
      5  * Copyright (c) 2016-2018 The strace developers.
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. The name of the author may not be used to endorse or promote products
     17  *    derived from this software without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     20  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     21  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     22  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     23  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     24  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     28  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include "tests.h"
     32 #include <assert.h>
     33 #include <stddef.h>
     34 #include <stdio.h>
     35 #include <stdlib.h>
     36 #include <string.h>
     37 #include <unistd.h>
     38 #include <sys/socket.h>
     39 #include <sys/un.h>
     40 
     41 #include "accept_compat.h"
     42 
     43 #define TEST_SOCKET "net-y-unix.socket"
     44 
     45 int
     46 main(void)
     47 {
     48 	skip_if_unavailable("/proc/self/fd/");
     49 
     50 	static const struct sockaddr_un addr = {
     51 		.sun_family = AF_UNIX,
     52 		.sun_path = TEST_SOCKET
     53 	};
     54 	struct sockaddr * const listen_sa = tail_memdup(&addr, sizeof(addr));
     55 
     56 	TAIL_ALLOC_OBJECT_CONST_PTR(socklen_t, len);
     57 	*len = offsetof(struct sockaddr_un, sun_path) + strlen(TEST_SOCKET) + 1;
     58 	if (*len > sizeof(addr))
     59 		*len = sizeof(addr);
     60 
     61 	int listen_fd = socket(AF_UNIX, SOCK_STREAM, 0);
     62 	if (listen_fd < 0)
     63 		perror_msg_and_skip("socket");
     64 	unsigned long listen_inode = inode_of_sockfd(listen_fd);
     65 	printf("socket(AF_UNIX, SOCK_STREAM, 0) = %d<socket:[%lu]>\n",
     66 	       listen_fd, listen_inode);
     67 
     68 	(void) unlink(TEST_SOCKET);
     69 	if (bind(listen_fd, listen_sa, *len))
     70 		perror_msg_and_skip("bind");
     71 	printf("bind(%d<socket:[%lu]>, {sa_family=AF_UNIX, sun_path=\"%s\"}"
     72 	       ", %u) = 0\n",
     73 	       listen_fd, listen_inode, TEST_SOCKET, (unsigned) *len);
     74 
     75 	if (listen(listen_fd, 1))
     76 		perror_msg_and_skip("listen");
     77 	printf("listen(%d<socket:[%lu]>, 1) = 0\n", listen_fd, listen_inode);
     78 
     79 	TAIL_ALLOC_OBJECT_CONST_PTR(unsigned int, optval);
     80 	*len = sizeof(*optval);
     81 	if (getsockopt(listen_fd, SOL_SOCKET, SO_PASSCRED, optval, len))
     82 		perror_msg_and_fail("getsockopt");
     83 	printf("getsockopt(%d<socket:[%lu]>, SOL_SOCKET, SO_PASSCRED"
     84 	       ", [%u], [%u]) = 0\n",
     85 	       listen_fd, listen_inode, *optval, (unsigned) *len);
     86 
     87 	memset(listen_sa, 0, sizeof(addr));
     88 	*len = sizeof(addr);
     89 	if (getsockname(listen_fd, listen_sa, len))
     90 		perror_msg_and_fail("getsockname");
     91 	printf("getsockname(%d<socket:[%lu]>, {sa_family=AF_UNIX"
     92 	       ", sun_path=\"%s\"}, [%d->%d]) = 0\n", listen_fd, listen_inode,
     93 	       TEST_SOCKET, (int) sizeof(addr), (int) *len);
     94 
     95 	int connect_fd = socket(AF_UNIX, SOCK_STREAM, 0);
     96 	if (connect_fd < 0)
     97 		perror_msg_and_fail("socket");
     98 	unsigned long connect_inode = inode_of_sockfd(connect_fd);
     99 	printf("socket(AF_UNIX, SOCK_STREAM, 0) = %d<socket:[%lu]>\n",
    100 	       connect_fd, connect_inode);
    101 
    102 	if (connect(connect_fd, listen_sa, *len))
    103 		perror_msg_and_fail("connect");
    104 	printf("connect(%d<socket:[%lu]>, {sa_family=AF_UNIX"
    105 	       ", sun_path=\"%s\"}, %u) = 0\n",
    106 	       connect_fd, connect_inode, TEST_SOCKET, (unsigned) *len);
    107 
    108 	struct sockaddr * const accept_sa = tail_alloc(sizeof(addr));
    109 	memset(accept_sa, 0, sizeof(addr));
    110 	*len = sizeof(addr);
    111 	int accept_fd = do_accept(listen_fd, accept_sa, len);
    112 	if (accept_fd < 0)
    113 		perror_msg_and_fail("accept");
    114 	unsigned long accept_inode = inode_of_sockfd(accept_fd);
    115 	printf("accept(%d<socket:[%lu]>, {sa_family=AF_UNIX}"
    116 	       ", [%d->%d]) = %d<socket:[%lu]>\n",
    117 	       listen_fd, listen_inode,
    118 	       (int) sizeof(addr), (int) *len,
    119 	       accept_fd, accept_inode);
    120 
    121 	memset(listen_sa, 0, sizeof(addr));
    122 	*len = sizeof(addr);
    123 	if (getpeername(connect_fd, listen_sa, len))
    124 		perror_msg_and_fail("getpeername");
    125 	printf("getpeername(%d<socket:[%lu]>, {sa_family=AF_UNIX"
    126 	       ", sun_path=\"%s\"}, [%d->%d]) = 0\n", connect_fd, connect_inode,
    127 	       TEST_SOCKET, (int) sizeof(addr), (int) *len);
    128 
    129 	char text[] = "text";
    130 	assert(sendto(connect_fd, text, sizeof(text) - 1, MSG_DONTWAIT, NULL, 0)
    131 	       == sizeof(text) - 1);
    132 	printf("sendto(%d<socket:[%lu]>, \"%s\", %u, MSG_DONTWAIT"
    133 	       ", NULL, 0) = %u\n",
    134 	       connect_fd, connect_inode, text,
    135 	       (unsigned) sizeof(text) - 1, (unsigned) sizeof(text) - 1);
    136 
    137 	assert(close(connect_fd) == 0);
    138 	printf("close(%d<socket:[%lu]>) = 0\n", connect_fd, connect_inode);
    139 
    140 	assert(recvfrom(accept_fd, text, sizeof(text) - 1, MSG_DONTWAIT, NULL, NULL)
    141 	       == sizeof(text) - 1);
    142 	printf("recvfrom(%d<socket:[%lu]>, \"%s\", %u, MSG_DONTWAIT"
    143 	       ", NULL, NULL) = %u\n",
    144 	       accept_fd, accept_inode, text,
    145 	       (unsigned) sizeof(text) - 1, (unsigned) sizeof(text) - 1);
    146 
    147 	assert(close(accept_fd) == 0);
    148 	printf("close(%d<socket:[%lu]>) = 0\n", accept_fd, accept_inode);
    149 
    150 	connect_fd = socket(AF_UNIX, SOCK_STREAM, 0);
    151 	if (connect_fd < 0)
    152 		perror_msg_and_fail("socket");
    153 	connect_inode = inode_of_sockfd(connect_fd);
    154 	printf("socket(AF_UNIX, SOCK_STREAM, 0) = %d<socket:[%lu]>\n",
    155 	       connect_fd, connect_inode);
    156 
    157 	*optval = 1;
    158 	*len = sizeof(*optval);
    159 	if (setsockopt(connect_fd, SOL_SOCKET, SO_PASSCRED, optval, *len))
    160 		perror_msg_and_fail("setsockopt");
    161 	printf("setsockopt(%d<socket:[%lu]>, SOL_SOCKET, SO_PASSCRED"
    162 	       ", [%u], %u) = 0\n",
    163 	       connect_fd, connect_inode, *optval, (unsigned) *len);
    164 
    165 	memset(listen_sa, 0, sizeof(addr));
    166 	*len = sizeof(addr);
    167 	if (getsockname(listen_fd, listen_sa, len))
    168 		perror_msg_and_fail("getsockname");
    169 	printf("getsockname(%d<socket:[%lu]>, {sa_family=AF_UNIX"
    170 	       ", sun_path=\"%s\"}, [%d->%d]) = 0\n",
    171 	       listen_fd, listen_inode, TEST_SOCKET,
    172 	       (int) sizeof(addr), (int) *len);
    173 
    174 	if (connect(connect_fd, listen_sa, *len))
    175 		perror_msg_and_fail("connect");
    176 	printf("connect(%d<socket:[%lu]>, {sa_family=AF_UNIX"
    177 	       ", sun_path=\"%s\"}, %u) = 0\n",
    178 	       connect_fd, connect_inode, TEST_SOCKET, (unsigned) *len);
    179 
    180 	memset(accept_sa, 0, sizeof(addr));
    181 	*len = sizeof(addr);
    182 	accept_fd = do_accept(listen_fd, accept_sa, len);
    183 	if (accept_fd < 0)
    184 		perror_msg_and_fail("accept");
    185 	accept_inode = inode_of_sockfd(accept_fd);
    186 	const char * const sun_path1 =
    187 		((struct sockaddr_un *) accept_sa)->sun_path + 1;
    188 	printf("accept(%d<socket:[%lu]>, {sa_family=AF_UNIX"
    189 	       ", sun_path=@\"%s\"}, [%d->%d]) = %d<socket:[%lu]>\n",
    190 	       listen_fd, listen_inode, sun_path1,
    191 	       (int) sizeof(addr), (int) *len,
    192 	       accept_fd, accept_inode);
    193 
    194 	memset(listen_sa, 0, sizeof(addr));
    195 	*len = sizeof(addr);
    196 	if (getpeername(connect_fd, listen_sa, len))
    197 		perror_msg_and_fail("getpeername");
    198 	printf("getpeername(%d<socket:[%lu]>, {sa_family=AF_UNIX"
    199 	       ", sun_path=\"%s\"}, [%d->%d]) = 0\n",
    200 	       connect_fd, connect_inode, TEST_SOCKET,
    201 	       (int) sizeof(addr), (int) *len);
    202 
    203 	memset(accept_sa, 0, sizeof(addr));
    204 	*len = sizeof(addr);
    205 	if (getsockname(connect_fd, accept_sa, len))
    206 		perror_msg_and_fail("getsockname");
    207 	printf("getsockname(%d<socket:[%lu]>, {sa_family=AF_UNIX"
    208 	       ", sun_path=@\"%s\"}, [%d->%d]) = 0\n",
    209 	       connect_fd, connect_inode, sun_path1,
    210 	       (int) sizeof(addr), (int) *len);
    211 
    212 	assert(sendto(connect_fd, text, sizeof(text) - 1, MSG_DONTWAIT, NULL, 0)
    213 	       == sizeof(text) - 1);
    214 	printf("sendto(%d<socket:[%lu]>, \"%s\", %u, MSG_DONTWAIT"
    215 	       ", NULL, 0) = %u\n",
    216 	       connect_fd, connect_inode, text,
    217 	       (unsigned) sizeof(text) - 1, (unsigned) sizeof(text) - 1);
    218 
    219 	assert(close(connect_fd) == 0);
    220 	printf("close(%d<socket:[%lu]>) = 0\n", connect_fd, connect_inode);
    221 
    222 	assert(recvfrom(accept_fd, text, sizeof(text) - 1, MSG_DONTWAIT, NULL, NULL)
    223 	       == sizeof(text) - 1);
    224 	printf("recvfrom(%d<socket:[%lu]>, \"%s\", %u, MSG_DONTWAIT"
    225 	       ", NULL, NULL) = %u\n",
    226 	       accept_fd, accept_inode, text,
    227 	       (unsigned) sizeof(text) - 1, (unsigned) sizeof(text) - 1);
    228 
    229 	assert(close(accept_fd) == 0);
    230 	printf("close(%d<socket:[%lu]>) = 0\n", accept_fd, accept_inode);
    231 
    232 	assert(unlink(TEST_SOCKET) == 0);
    233 
    234 	assert(close(listen_fd) == 0);
    235 	printf("close(%d<socket:[%lu]>) = 0\n",
    236 	       listen_fd, listen_inode);
    237 
    238 	puts("+++ exited with 0 +++");
    239 	return 0;
    240 }
    241