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/*
* Copyright (c) 2002-2013 Balabit
* Copyright (c) 1998-2013 Balázs Scheidler
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation, 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
*
* As an additional exemption you are allowed to compile & link against the
* OpenSSL libraries as published by the OpenSSL project. See the file
* COPYING for details.
*
*/
#include "socket-options-inet.h"
#include "gsockaddr.h"
#include "messages.h"
#include <string.h>
#ifndef SOL_IP
#define SOL_IP IPPROTO_IP
#endif
#ifndef SOL_IPV6
#define SOL_IPV6 IPPROTO_IPV6
#endif
static gboolean
socket_options_inet_setup_socket(SocketOptions *s, gint fd, GSockAddr *addr, AFSocketDirection dir)
{
SocketOptionsInet *self = (SocketOptionsInet *) s;
gint off = 0;
if (!socket_options_setup_socket_method(s, fd, addr, dir))
return FALSE;
if (self->tcp_keepalive_time > 0)
{
#ifdef TCP_KEEPIDLE
setsockopt(fd, SOL_TCP, TCP_KEEPIDLE, &self->tcp_keepalive_time, sizeof(self->tcp_keepalive_time));
#else
msg_error("tcp-keepalive-time() is set but no TCP_KEEPIDLE setsockopt on this platform");
return FALSE;
#endif
}
if (self->tcp_keepalive_probes > 0)
{
#ifdef TCP_KEEPCNT
setsockopt(fd, SOL_TCP, TCP_KEEPCNT, &self->tcp_keepalive_probes, sizeof(self->tcp_keepalive_probes));
#else
msg_error("tcp-keepalive-probes() is set but no TCP_KEEPCNT setsockopt on this platform");
return FALSE;
#endif
}
if (self->tcp_keepalive_intvl > 0)
{
#ifdef TCP_KEEPINTVL
setsockopt(fd, SOL_TCP, TCP_KEEPINTVL, &self->tcp_keepalive_intvl, sizeof(self->tcp_keepalive_intvl));
#else
msg_error("tcp-keepalive-intvl() is set but no TCP_KEEPINTVL setsockopt on this platform");
return FALSE;
#endif
}
switch (addr->sa.sa_family)
{
case AF_INET:
{
struct ip_mreq mreq;
if (IN_MULTICAST(ntohl(g_sockaddr_inet_get_address(addr).s_addr)))
{
if (dir & AFSOCKET_DIR_RECV)
{
memset(&mreq, 0, sizeof(mreq));
mreq.imr_multiaddr = g_sockaddr_inet_get_address(addr);
mreq.imr_interface.s_addr = INADDR_ANY;
setsockopt(fd, SOL_IP, IP_ADD_MEMBERSHIP, &mreq, sizeof(mreq));
setsockopt(fd, SOL_IP, IP_MULTICAST_LOOP, &off, sizeof(off));
}
if (dir & AFSOCKET_DIR_SEND)
{
if (self->ip_ttl)
setsockopt(fd, SOL_IP, IP_MULTICAST_TTL, &self->ip_ttl, sizeof(self->ip_ttl));
}
}
else
{
if (self->ip_ttl && (dir & AFSOCKET_DIR_SEND))
setsockopt(fd, SOL_IP, IP_TTL, &self->ip_ttl, sizeof(self->ip_ttl));
}
if (self->ip_tos && (dir & AFSOCKET_DIR_SEND))
setsockopt(fd, SOL_IP, IP_TOS, &self->ip_tos, sizeof(self->ip_tos));
break;
}
#if SYSLOG_NG_ENABLE_IPV6
case AF_INET6:
{
struct ipv6_mreq mreq6;
if (IN6_IS_ADDR_MULTICAST(&g_sockaddr_inet6_get_sa(addr)->sin6_addr))
{
if (dir & AFSOCKET_DIR_RECV)
{
memset(&mreq6, 0, sizeof(mreq6));
mreq6.ipv6mr_multiaddr = *g_sockaddr_inet6_get_address(addr);
mreq6.ipv6mr_interface = 0;
setsockopt(fd, SOL_IPV6, IPV6_JOIN_GROUP, &mreq6, sizeof(mreq6));
setsockopt(fd, SOL_IPV6, IPV6_MULTICAST_LOOP, &off, sizeof(off));
}
if (dir & AFSOCKET_DIR_SEND)
{
if (self->ip_ttl)
setsockopt(fd, SOL_IPV6, IPV6_MULTICAST_HOPS, &self->ip_ttl, sizeof(self->ip_ttl));
}
}
else
{
if (self->ip_ttl && (dir & AFSOCKET_DIR_SEND))
setsockopt(fd, SOL_IPV6, IPV6_UNICAST_HOPS, &self->ip_ttl, sizeof(self->ip_ttl));
}
break;
}
#endif
}
return TRUE;
}
SocketOptionsInet *
socket_options_inet_new_instance(void)
{
SocketOptionsInet *self = g_new0(SocketOptionsInet, 1);
socket_options_init_instance(&self->super);
self->super.setup_socket = socket_options_inet_setup_socket;
self->super.so_keepalive = TRUE;
#if defined(TCP_KEEPTIME) && defined(TCP_KEEPIDLE) && defined(TCP_KEEPCNT)
self->tcp_keepalive_time = 60;
self->tcp_keepalive_intvl = 10;
self->tcp_keepalive_probes = 6;
#endif
return self;
}
SocketOptions *
socket_options_inet_new(void)
{
return &socket_options_inet_new_instance()->super;
}
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