2 * Copyright (c) 1999 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * 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.
17 * 3. Neither the name of the Institute nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 RCSID("$Id: socket.c,v 1.3 1999/12/02 16:58:52 joda Exp $");
40 #ifdef HAVE_SYS_TYPES_H
41 #include <sys/types.h>
43 #ifdef HAVE_SYS_SOCKET_H
44 #include <sys/socket.h>
46 #ifdef HAVE_NETINET_IN_H
47 #include <netinet/in.h>
49 #ifdef HAVE_NETINET_IN_SYSTM_H
50 #include <netinet/in_systm.h>
52 #ifdef HAVE_NETINET_IP_H
53 #include <netinet/ip.h>
61 * Set `sa' to the unitialized address of address family `af'
65 socket_set_any (struct sockaddr *sa, int af)
69 struct sockaddr_in *sin = (struct sockaddr_in *)sa;
71 memset (sin, 0, sizeof(*sin));
72 sin->sin_family = AF_INET;
74 sin->sin_addr.s_addr = INADDR_ANY;
79 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
81 memset (sin6, 0, sizeof(*sin6));
82 sin6->sin6_family = AF_INET6;
84 sin6->sin6_addr = in6addr_any;
89 errx (1, "unknown address family %d", sa->sa_family);
95 * set `sa' to (`ptr', `port')
99 socket_set_address_and_port (struct sockaddr *sa, const void *ptr, int port)
101 switch (sa->sa_family) {
103 struct sockaddr_in *sin = (struct sockaddr_in *)sa;
105 memset (sin, 0, sizeof(*sin));
106 sin->sin_family = AF_INET;
107 sin->sin_port = port;
108 memcpy (&sin->sin_addr, ptr, sizeof(struct in_addr));
113 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
115 memset (sin6, 0, sizeof(*sin6));
116 sin6->sin6_family = AF_INET6;
117 sin6->sin6_port = port;
118 memcpy (&sin6->sin6_addr, ptr, sizeof(struct in6_addr));
123 errx (1, "unknown address family %d", sa->sa_family);
129 * Return the size of an address of the type in `sa'
133 socket_addr_size (const struct sockaddr *sa)
135 switch (sa->sa_family) {
137 return sizeof(struct in_addr);
140 return sizeof(struct in6_addr);
143 errx (1, "unknown address family %d", sa->sa_family);
149 * Return the size of a `struct sockaddr' in `sa'.
153 socket_sockaddr_size (const struct sockaddr *sa)
155 switch (sa->sa_family) {
157 return sizeof(struct sockaddr_in);
160 return sizeof(struct sockaddr_in6);
163 errx (1, "unknown address family %d", sa->sa_family);
169 * Return the binary address of `sa'.
173 socket_get_address (struct sockaddr *sa)
175 switch (sa->sa_family) {
177 struct sockaddr_in *sin = (struct sockaddr_in *)sa;
178 return &sin->sin_addr;
182 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
183 return &sin6->sin6_addr;
187 errx (1, "unknown address family %d", sa->sa_family);
193 * Return the port number from `sa'.
197 socket_get_port (const struct sockaddr *sa)
199 switch (sa->sa_family) {
201 const struct sockaddr_in *sin = (const struct sockaddr_in *)sa;
202 return sin->sin_port;
206 const struct sockaddr_in6 *sin6 = (const struct sockaddr_in6 *)sa;
207 return sin6->sin6_port;
211 errx (1, "unknown address family %d", sa->sa_family);
217 * Set the port in `sa' to `port'.
221 socket_set_port (struct sockaddr *sa, int port)
223 switch (sa->sa_family) {
225 struct sockaddr_in *sin = (struct sockaddr_in *)sa;
226 sin->sin_port = port;
231 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
232 sin6->sin6_port = port;
237 errx (1, "unknown address family %d", sa->sa_family);
243 * Enable debug on `sock'.
247 socket_set_debug (int sock)
251 #if defined(SO_DEBUG) && defined(HAVE_SETSOCKOPT)
252 if (setsockopt (sock, SOL_SOCKET, SO_DEBUG, (void *) &on, sizeof (on)) < 0)
253 warn ("setsockopt SO_DEBUG (ignored)");
258 * Set the type-of-service of `sock' to `tos'.
262 socket_set_tos (int sock, int tos)
264 #if defined(IP_TOS) && defined(HAVE_SETSOCKOPT)
265 if (setsockopt (sock, IPPROTO_IP, IP_TOS, (void *) &tos, sizeof (int)) < 0)
266 warn ("setsockopt TOS (ignored)");
271 * set the reuse of addresses on `sock' to `val'.
275 socket_set_reuseaddr (int sock, int val)
277 #if defined(SO_REUSEADDR) && defined(HAVE_SETSOCKOPT)
278 if(setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (void *)&val,
280 err (1, "setsockopt SO_REUSEADDR");