2 * Copyright (c) 1999 - 2000 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
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7 * modification, are permitted provided that the following conditions
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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
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27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 RCSID("$Id: socket.c,v 1.8 2003/04/15 03:26:51 lha Exp $");
43 * Set `sa' to the unitialized address of address family `af'
47 socket_set_any (struct sockaddr *sa, int af)
51 struct sockaddr_in *sin = (struct sockaddr_in *)sa;
53 memset (sin, 0, sizeof(*sin));
54 sin->sin_family = AF_INET;
56 sin->sin_addr.s_addr = INADDR_ANY;
61 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
63 memset (sin6, 0, sizeof(*sin6));
64 sin6->sin6_family = AF_INET6;
66 sin6->sin6_addr = in6addr_any;
71 errx (1, "unknown address family %d", sa->sa_family);
77 * set `sa' to (`ptr', `port')
81 socket_set_address_and_port (struct sockaddr *sa, const void *ptr, int port)
83 switch (sa->sa_family) {
85 struct sockaddr_in *sin = (struct sockaddr_in *)sa;
87 memset (sin, 0, sizeof(*sin));
88 sin->sin_family = AF_INET;
90 memcpy (&sin->sin_addr, ptr, sizeof(struct in_addr));
95 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
97 memset (sin6, 0, sizeof(*sin6));
98 sin6->sin6_family = AF_INET6;
99 sin6->sin6_port = port;
100 memcpy (&sin6->sin6_addr, ptr, sizeof(struct in6_addr));
105 errx (1, "unknown address family %d", sa->sa_family);
111 * Return the size of an address of the type in `sa'
115 socket_addr_size (const struct sockaddr *sa)
117 switch (sa->sa_family) {
119 return sizeof(struct in_addr);
122 return sizeof(struct in6_addr);
125 errx (1, "unknown address family %d", sa->sa_family);
131 * Return the size of a `struct sockaddr' in `sa'.
135 socket_sockaddr_size (const struct sockaddr *sa)
137 switch (sa->sa_family) {
139 return sizeof(struct sockaddr_in);
142 return sizeof(struct sockaddr_in6);
145 errx (1, "unknown address family %d", sa->sa_family);
151 * Return the binary address of `sa'.
155 socket_get_address (struct sockaddr *sa)
157 switch (sa->sa_family) {
159 struct sockaddr_in *sin = (struct sockaddr_in *)sa;
160 return &sin->sin_addr;
164 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
165 return &sin6->sin6_addr;
169 errx (1, "unknown address family %d", sa->sa_family);
175 * Return the port number from `sa'.
179 socket_get_port (const struct sockaddr *sa)
181 switch (sa->sa_family) {
183 const struct sockaddr_in *sin = (const struct sockaddr_in *)sa;
184 return sin->sin_port;
188 const struct sockaddr_in6 *sin6 = (const struct sockaddr_in6 *)sa;
189 return sin6->sin6_port;
193 errx (1, "unknown address family %d", sa->sa_family);
199 * Set the port in `sa' to `port'.
203 socket_set_port (struct sockaddr *sa, int port)
205 switch (sa->sa_family) {
207 struct sockaddr_in *sin = (struct sockaddr_in *)sa;
208 sin->sin_port = port;
213 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
214 sin6->sin6_port = port;
219 errx (1, "unknown address family %d", sa->sa_family);
225 * Set the range of ports to use when binding with port = 0.
228 socket_set_portrange (int sock, int restr, int af)
230 #if defined(IP_PORTRANGE)
232 int on = restr ? IP_PORTRANGE_HIGH : IP_PORTRANGE_DEFAULT;
233 if (setsockopt (sock, IPPROTO_IP, IP_PORTRANGE, &on,
235 warn ("setsockopt IP_PORTRANGE (ignored)");
238 #if defined(IPV6_PORTRANGE)
239 if (af == AF_INET6) {
240 int on = restr ? IPV6_PORTRANGE_HIGH :
241 IPV6_PORTRANGE_DEFAULT;
242 if (setsockopt (sock, IPPROTO_IPV6, IPV6_PORTRANGE, &on,
244 warn ("setsockopt IPV6_PORTRANGE (ignored)");
250 * Enable debug on `sock'.
254 socket_set_debug (int sock)
256 #if defined(SO_DEBUG) && defined(HAVE_SETSOCKOPT)
259 if (setsockopt (sock, SOL_SOCKET, SO_DEBUG, (void *) &on, sizeof (on)) < 0)
260 warn ("setsockopt SO_DEBUG (ignored)");
265 * Set the type-of-service of `sock' to `tos'.
269 socket_set_tos (int sock, int tos)
271 #if defined(IP_TOS) && defined(HAVE_SETSOCKOPT)
272 if (setsockopt (sock, IPPROTO_IP, IP_TOS, (void *) &tos, sizeof (int)) < 0)
274 warn ("setsockopt TOS (ignored)");
279 * set the reuse of addresses on `sock' to `val'.
283 socket_set_reuseaddr (int sock, int val)
285 #if defined(SO_REUSEADDR) && defined(HAVE_SETSOCKOPT)
286 if(setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (void *)&val,
288 err (1, "setsockopt SO_REUSEADDR");