283 lines
6.3 KiB
C
283 lines
6.3 KiB
C
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/*
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* Copyright (c) 1999 Kungliga Tekniska H<EFBFBD>gskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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RCSID("$Id: socket.c,v 1.3 1999/12/02 16:58:52 joda Exp $");
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#endif
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#include <string.h>
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#endif
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#ifdef HAVE_NETINET_IN_H
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#include <netinet/in.h>
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#endif
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#ifdef HAVE_NETINET_IN_SYSTM_H
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#include <netinet/in_systm.h>
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#endif
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#ifdef HAVE_NETINET_IP_H
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#include <netinet/ip.h>
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#endif
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#include <roken.h>
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#include <err.h>
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/*
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* Set `sa' to the unitialized address of address family `af'
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*/
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void
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socket_set_any (struct sockaddr *sa, int af)
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{
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switch (af) {
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case AF_INET : {
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struct sockaddr_in *sin = (struct sockaddr_in *)sa;
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memset (sin, 0, sizeof(*sin));
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sin->sin_family = AF_INET;
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sin->sin_port = 0;
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sin->sin_addr.s_addr = INADDR_ANY;
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break;
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}
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#ifdef HAVE_IPV6
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case AF_INET6 : {
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struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
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memset (sin6, 0, sizeof(*sin6));
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sin6->sin6_family = AF_INET6;
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sin6->sin6_port = 0;
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sin6->sin6_addr = in6addr_any;
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break;
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}
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#endif
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default :
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errx (1, "unknown address family %d", sa->sa_family);
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break;
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}
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}
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/*
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* set `sa' to (`ptr', `port')
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*/
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void
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socket_set_address_and_port (struct sockaddr *sa, const void *ptr, int port)
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{
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switch (sa->sa_family) {
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case AF_INET : {
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struct sockaddr_in *sin = (struct sockaddr_in *)sa;
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memset (sin, 0, sizeof(*sin));
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sin->sin_family = AF_INET;
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sin->sin_port = port;
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memcpy (&sin->sin_addr, ptr, sizeof(struct in_addr));
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break;
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}
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#ifdef HAVE_IPV6
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case AF_INET6 : {
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struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
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memset (sin6, 0, sizeof(*sin6));
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sin6->sin6_family = AF_INET6;
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sin6->sin6_port = port;
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memcpy (&sin6->sin6_addr, ptr, sizeof(struct in6_addr));
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break;
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}
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#endif
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default :
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errx (1, "unknown address family %d", sa->sa_family);
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break;
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}
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}
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/*
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* Return the size of an address of the type in `sa'
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*/
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size_t
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socket_addr_size (const struct sockaddr *sa)
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{
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switch (sa->sa_family) {
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case AF_INET :
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return sizeof(struct in_addr);
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#ifdef HAVE_IPV6
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case AF_INET6 :
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return sizeof(struct in6_addr);
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#endif
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default :
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errx (1, "unknown address family %d", sa->sa_family);
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break;
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}
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}
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/*
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* Return the size of a `struct sockaddr' in `sa'.
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*/
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size_t
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socket_sockaddr_size (const struct sockaddr *sa)
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{
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switch (sa->sa_family) {
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case AF_INET :
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return sizeof(struct sockaddr_in);
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#ifdef HAVE_IPV6
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case AF_INET6 :
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return sizeof(struct sockaddr_in6);
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#endif
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default :
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errx (1, "unknown address family %d", sa->sa_family);
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break;
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}
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}
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/*
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* Return the binary address of `sa'.
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*/
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void *
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socket_get_address (struct sockaddr *sa)
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{
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switch (sa->sa_family) {
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case AF_INET : {
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struct sockaddr_in *sin = (struct sockaddr_in *)sa;
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return &sin->sin_addr;
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}
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#ifdef HAVE_IPV6
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case AF_INET6 : {
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struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
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return &sin6->sin6_addr;
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}
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#endif
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default :
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errx (1, "unknown address family %d", sa->sa_family);
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break;
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}
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}
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/*
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* Return the port number from `sa'.
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*/
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int
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socket_get_port (const struct sockaddr *sa)
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{
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switch (sa->sa_family) {
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case AF_INET : {
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const struct sockaddr_in *sin = (const struct sockaddr_in *)sa;
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return sin->sin_port;
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}
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#ifdef HAVE_IPV6
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case AF_INET6 : {
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const struct sockaddr_in6 *sin6 = (const struct sockaddr_in6 *)sa;
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return sin6->sin6_port;
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}
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#endif
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default :
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errx (1, "unknown address family %d", sa->sa_family);
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break;
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}
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}
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/*
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* Set the port in `sa' to `port'.
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*/
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void
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socket_set_port (struct sockaddr *sa, int port)
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{
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switch (sa->sa_family) {
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case AF_INET : {
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struct sockaddr_in *sin = (struct sockaddr_in *)sa;
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sin->sin_port = port;
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break;
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}
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#ifdef HAVE_IPV6
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case AF_INET6 : {
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struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
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sin6->sin6_port = port;
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break;
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}
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#endif
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default :
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errx (1, "unknown address family %d", sa->sa_family);
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break;
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}
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}
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/*
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* Enable debug on `sock'.
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*/
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void
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socket_set_debug (int sock)
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{
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int on = 1;
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#if defined(SO_DEBUG) && defined(HAVE_SETSOCKOPT)
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if (setsockopt (sock, SOL_SOCKET, SO_DEBUG, (void *) &on, sizeof (on)) < 0)
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warn ("setsockopt SO_DEBUG (ignored)");
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#endif
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}
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/*
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* Set the type-of-service of `sock' to `tos'.
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*/
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void
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socket_set_tos (int sock, int tos)
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{
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#if defined(IP_TOS) && defined(HAVE_SETSOCKOPT)
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if (setsockopt (sock, IPPROTO_IP, IP_TOS, (void *) &tos, sizeof (int)) < 0)
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warn ("setsockopt TOS (ignored)");
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#endif
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}
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/*
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* set the reuse of addresses on `sock' to `val'.
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*/
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void
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socket_set_reuseaddr (int sock, int val)
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{
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#if defined(SO_REUSEADDR) && defined(HAVE_SETSOCKOPT)
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if(setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (void *)&val,
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sizeof(val)) < 0)
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err (1, "setsockopt SO_REUSEADDR");
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#endif
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}
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