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/*
* Copyright (c) 1999 - 2000 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
RCSID("$KTH: socket.c,v 1.5 2000/07/27 04:41:06 assar Exp $");
#endif
#include <telnetd.h>
#include <err.h>
#include <netinet/in.h>
/*
* Set `sa' to the unitialized address of address family `af'
*/
void
socket_set_any (struct sockaddr *sa, int af)
{
switch (af) {
case AF_INET : {
struct sockaddr_in *sin = (struct sockaddr_in *)sa;
memset (sin, 0, sizeof(*sin));
sin->sin_family = AF_INET;
sin->sin_port = 0;
sin->sin_addr.s_addr = INADDR_ANY;
break;
}
#ifdef HAVE_IPV6
case AF_INET6 : {
struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
memset (sin6, 0, sizeof(*sin6));
sin6->sin6_family = AF_INET6;
sin6->sin6_port = 0;
sin6->sin6_addr = in6addr_any;
break;
}
#endif
default :
errx (1, "unknown address family %d", sa->sa_family);
break;
}
}
/*
* set `sa' to (`ptr', `port')
*/
void
socket_set_address_and_port (struct sockaddr *sa, const void *ptr, int port)
{
switch (sa->sa_family) {
case AF_INET : {
struct sockaddr_in *sin = (struct sockaddr_in *)sa;
memset (sin, 0, sizeof(*sin));
sin->sin_family = AF_INET;
sin->sin_port = port;
memcpy (&sin->sin_addr, ptr, sizeof(struct in_addr));
break;
}
#ifdef HAVE_IPV6
case AF_INET6 : {
struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
memset (sin6, 0, sizeof(*sin6));
sin6->sin6_family = AF_INET6;
sin6->sin6_port = port;
memcpy (&sin6->sin6_addr, ptr, sizeof(struct in6_addr));
break;
}
#endif
default :
errx (1, "unknown address family %d", sa->sa_family);
break;
}
}
/*
* Return the size of an address of the type in `sa'
*/
size_t
socket_addr_size (const struct sockaddr *sa)
{
switch (sa->sa_family) {
case AF_INET :
return sizeof(struct in_addr);
#ifdef HAVE_IPV6
case AF_INET6 :
return sizeof(struct in6_addr);
#endif
default :
errx (1, "unknown address family %d", sa->sa_family);
break;
}
}
/*
* Return the size of a `struct sockaddr' in `sa'.
*/
size_t
socket_sockaddr_size (const struct sockaddr *sa)
{
switch (sa->sa_family) {
case AF_INET :
return sizeof(struct sockaddr_in);
#ifdef HAVE_IPV6
case AF_INET6 :
return sizeof(struct sockaddr_in6);
#endif
default :
errx (1, "unknown address family %d", sa->sa_family);
break;
}
}
/*
* Return the binary address of `sa'.
*/
void *
socket_get_address (struct sockaddr *sa)
{
switch (sa->sa_family) {
case AF_INET : {
struct sockaddr_in *sin = (struct sockaddr_in *)sa;
return &sin->sin_addr;
}
#ifdef HAVE_IPV6
case AF_INET6 : {
struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
return &sin6->sin6_addr;
}
#endif
default :
errx (1, "unknown address family %d", sa->sa_family);
break;
}
}
/*
* Return the port number from `sa'.
*/
int
socket_get_port (const struct sockaddr *sa)
{
switch (sa->sa_family) {
case AF_INET : {
const struct sockaddr_in *sin = (const struct sockaddr_in *)sa;
return sin->sin_port;
}
#ifdef HAVE_IPV6
case AF_INET6 : {
const struct sockaddr_in6 *sin6 = (const struct sockaddr_in6 *)sa;
return sin6->sin6_port;
}
#endif
default :
errx (1, "unknown address family %d", sa->sa_family);
break;
}
}
/*
* Set the port in `sa' to `port'.
*/
void
socket_set_port (struct sockaddr *sa, int port)
{
switch (sa->sa_family) {
case AF_INET : {
struct sockaddr_in *sin = (struct sockaddr_in *)sa;
sin->sin_port = port;
break;
}
#ifdef HAVE_IPV6
case AF_INET6 : {
struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
sin6->sin6_port = port;
break;
}
#endif
default :
errx (1, "unknown address family %d", sa->sa_family);
break;
}
}
/*
* Enable debug on `sock'.
*/
void
socket_set_debug (int sock)
{
#if defined(SO_DEBUG) && defined(HAVE_SETSOCKOPT)
int on = 1;
if (setsockopt (sock, SOL_SOCKET, SO_DEBUG, (void *) &on, sizeof (on)) < 0)
warn ("setsockopt SO_DEBUG (ignored)");
#endif
}
/*
* Set the type-of-service of `sock' to `tos'.
*/
void
socket_set_tos (int sock, int tos)
{
#if defined(IP_TOS) && defined(HAVE_SETSOCKOPT)
if (setsockopt (sock, IPPROTO_IP, IP_TOS, (void *) &tos, sizeof (int)) < 0)
warn ("setsockopt TOS (ignored)");
#endif
}
/*
* set the reuse of addresses on `sock' to `val'.
*/
void
socket_set_reuseaddr (int sock, int val)
{
#if defined(SO_REUSEADDR) && defined(HAVE_SETSOCKOPT)
if(setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (void *)&val,
sizeof(val)) < 0)
err (1, "setsockopt SO_REUSEADDR");
#endif
}
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