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/* X-Chat
* Copyright (C) 2001 Peter Zelezny.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
/* ipv4 and ipv6 networking functions with a common interface */
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <glib.h>
#ifndef WIN32
#include <unistd.h>
#endif
#define WANTSOCKET
#define WANTARPA
#define WANTDNS
#include "inet.h"
#define NETWORK_PRIVATE
#include "network.h"
#define RAND_INT(n) ((int)(rand() / (RAND_MAX + 1.0) * (n)))
/* ================== COMMON ================= */
static void
net_set_socket_options (int sok)
{
socklen_t sw;
sw = 1;
setsockopt (sok, SOL_SOCKET, SO_REUSEADDR, (char *) &sw, sizeof (sw));
sw = 1;
setsockopt (sok, SOL_SOCKET, SO_KEEPALIVE, (char *) &sw, sizeof (sw));
}
char *
net_ip (guint32 addr)
{
struct in_addr ia;
ia.s_addr = htonl (addr);
return inet_ntoa (ia);
}
void
net_store_destroy (netstore * ns)
{
if (ns->ip6_hostent)
freeaddrinfo (ns->ip6_hostent);
g_free (ns);
}
netstore *
net_store_new (void)
{
return g_new0 (netstore, 1);
}
/* =================== IPV6 ================== */
char *
net_resolve (netstore * ns, char *hostname, int port, char **real_host)
{
struct addrinfo hints;
char ipstring[MAX_HOSTNAME];
char portstring[MAX_HOSTNAME];
int ret;
/* if (ns->ip6_hostent)
freeaddrinfo (ns->ip6_hostent);*/
sprintf (portstring, "%d", port);
memset (&hints, 0, sizeof (struct addrinfo));
hints.ai_family = PF_UNSPEC; /* support ipv6 and ipv4 */
hints.ai_flags = AI_CANONNAME | AI_ADDRCONFIG;
hints.ai_socktype = SOCK_STREAM;
if (port == 0)
ret = getaddrinfo (hostname, NULL, &hints, &ns->ip6_hostent);
else
ret = getaddrinfo (hostname, portstring, &hints, &ns->ip6_hostent);
if (ret != 0)
return NULL;
#ifdef LOOKUPD /* See note about lookupd above the IPv4 version of net_resolve. */
struct addrinfo *tmp;
int count = 0;
for (tmp = ns->ip6_hostent; tmp; tmp = tmp->ai_next)
count ++;
count = RAND_INT(count);
while (count--) ns->ip6_hostent = ns->ip6_hostent->ai_next;
#endif
/* find the numeric IP number */
ipstring[0] = 0;
getnameinfo (ns->ip6_hostent->ai_addr, ns->ip6_hostent->ai_addrlen,
ipstring, sizeof (ipstring), NULL, 0, NI_NUMERICHOST);
if (ns->ip6_hostent->ai_canonname)
*real_host = g_strdup (ns->ip6_hostent->ai_canonname);
else
*real_host = g_strdup (hostname);
return g_strdup (ipstring);
}
/* the only thing making this interface unclean, this shitty sok4, sok6 business */
int
net_connect (netstore * ns, int sok4, int sok6, int *sok_return)
{
struct addrinfo *res, *res0;
int error = -1;
res0 = ns->ip6_hostent;
for (res = res0; res; res = res->ai_next)
{
/* sok = socket (res->ai_family, res->ai_socktype, res->ai_protocol);
if (sok < 0)
continue;*/
switch (res->ai_family)
{
case AF_INET:
error = connect (sok4, res->ai_addr, res->ai_addrlen);
*sok_return = sok4;
break;
case AF_INET6:
error = connect (sok6, res->ai_addr, res->ai_addrlen);
*sok_return = sok6;
break;
default:
error = 1;
}
if (error == 0)
break;
}
return error;
}
void
net_bind (netstore * tobindto, int sok4, int sok6)
{
bind (sok4, tobindto->ip6_hostent->ai_addr,
tobindto->ip6_hostent->ai_addrlen);
bind (sok6, tobindto->ip6_hostent->ai_addr,
tobindto->ip6_hostent->ai_addrlen);
}
void
net_sockets (int *sok4, int *sok6)
{
*sok4 = socket (AF_INET, SOCK_STREAM, IPPROTO_TCP);
*sok6 = socket (AF_INET6, SOCK_STREAM, IPPROTO_TCP);
net_set_socket_options (*sok4);
net_set_socket_options (*sok6);
}
void
udp_sockets (int *sok4, int *sok6)
{
*sok4 = socket (AF_INET, SOCK_DGRAM, IPPROTO_UDP);
*sok6 = socket (AF_INET6, SOCK_DGRAM, IPPROTO_UDP);
}
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