1 /*
2 * Copyright (c) 2014 Oracle and/or its affiliates. All Rights Reserved.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation; either version 2 of
7 * the License, or (at your option) any later version.
8 *
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19 #include <sys/types.h>
20 #include <sys/socket.h>
21 #include <netinet/ip.h>
22 #include <string.h>
23 #include <unistd.h>
24 #include <errno.h>
25
bound_socket(int domain,int type)26 int bound_socket(int domain, int type)
27 {
28 int sock;
29 struct sockaddr_storage addr;
30 struct sockaddr_in *addr4 = (struct sockaddr_in *)&addr;
31 struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)&addr;
32 socklen_t slen;
33
34 switch (domain) {
35 case AF_INET:
36 addr4->sin_family = AF_INET;
37 addr4->sin_port = 0;
38 addr4->sin_addr.s_addr = INADDR_ANY;
39 slen = sizeof(*addr4);
40 break;
41
42 case AF_INET6:
43 addr6->sin6_family = AF_INET6;
44 addr6->sin6_port = 0;
45 addr6->sin6_addr = in6addr_any;
46 slen = sizeof(*addr6);
47 break;
48
49 default:
50 errno = EAFNOSUPPORT;
51 return -1;
52 }
53
54 if ((type != SOCK_STREAM) && (type != SOCK_DGRAM)) {
55 errno = EINVAL;
56 return -1;
57 }
58
59 sock = socket(domain, type, 0);
60 if (sock < 0)
61 return -1;
62
63 if (bind(sock, (struct sockaddr *)&addr, slen) < 0) {
64 close(sock);
65 return -1;
66 }
67
68 return sock;
69 }
70