1 /*-
2 * Copyright (c) 2005 Andrey Simonenko
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD: stable/12/tools/regression/sockets/unix_cmsg/t_cmsgcred.c 309554 2016-12-05 17:21:04Z sobomax $");
29
30 #include <sys/types.h>
31 #include <sys/socket.h>
32 #include <sys/un.h>
33 #include <inttypes.h>
34 #include <stdarg.h>
35 #include <stdbool.h>
36 #include <stdlib.h>
37
38 #include "uc_common.h"
39 #include "t_generic.h"
40 #include "t_cmsgcred.h"
41
42 int
t_cmsgcred_client(int fd)43 t_cmsgcred_client(int fd)
44 {
45 struct msghdr msghdr;
46 struct iovec iov[1];
47 void *cmsg_data;
48 size_t cmsg_size;
49 int rv;
50
51 if (uc_sync_recv() < 0)
52 return (-2);
53
54 rv = -2;
55
56 cmsg_size = CMSG_SPACE(sizeof(struct cmsgcred));
57 cmsg_data = malloc(cmsg_size);
58 if (cmsg_data == NULL) {
59 uc_logmsg("malloc");
60 goto done;
61 }
62 uc_msghdr_init_client(&msghdr, iov, cmsg_data, cmsg_size,
63 SCM_CREDS, sizeof(struct cmsgcred));
64
65 if (uc_socket_connect(fd) < 0)
66 goto done;
67
68 if (uc_message_sendn(fd, &msghdr) < 0)
69 goto done;
70
71 rv = 0;
72 done:
73 free(cmsg_data);
74 return (rv);
75 }
76
77 static int
t_cmsgcred_server(int fd1)78 t_cmsgcred_server(int fd1)
79 {
80 struct msghdr msghdr;
81 struct iovec iov[1];
82 struct cmsghdr *cmsghdr;
83 void *cmsg_data;
84 size_t cmsg_size;
85 u_int i;
86 int fd2, rv;
87
88 if (uc_sync_send() < 0)
89 return (-2);
90
91 fd2 = -1;
92 rv = -2;
93
94 cmsg_size = CMSG_SPACE(sizeof(struct cmsgcred));
95 cmsg_data = malloc(cmsg_size);
96 if (cmsg_data == NULL) {
97 uc_logmsg("malloc");
98 goto done;
99 }
100
101 if (uc_cfg.sock_type == SOCK_STREAM) {
102 fd2 = uc_socket_accept(fd1);
103 if (fd2 < 0)
104 goto done;
105 } else
106 fd2 = fd1;
107
108 rv = -1;
109 for (i = 1; i <= uc_cfg.ipc_msg.msg_num; ++i) {
110 uc_dbgmsg("message #%u", i);
111
112 uc_msghdr_init_server(&msghdr, iov, cmsg_data, cmsg_size);
113 if (uc_message_recv(fd2, &msghdr) < 0) {
114 rv = -2;
115 break;
116 }
117
118 if (uc_check_msghdr(&msghdr, sizeof(*cmsghdr)) < 0)
119 break;
120
121 cmsghdr = CMSG_FIRSTHDR(&msghdr);
122 if (uc_check_scm_creds_cmsgcred(cmsghdr) < 0)
123 break;
124 }
125 if (i > uc_cfg.ipc_msg.msg_num)
126 rv = 0;
127 done:
128 free(cmsg_data);
129 if (uc_cfg.sock_type == SOCK_STREAM && fd2 >= 0)
130 if (uc_socket_close(fd2) < 0)
131 rv = -2;
132 return (rv);
133 }
134
135 int
t_cmsgcred(void)136 t_cmsgcred(void)
137 {
138 return (t_generic(t_cmsgcred_client, t_cmsgcred_server));
139 }
140