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/*
* Copyright (c) 2002-2014 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.h"
#include "messages.h"
#include <sys/types.h>
#include <sys/socket.h>
gboolean
socket_options_setup_socket_method(SocketOptions *self, gint fd, GSockAddr *bind_addr, AFSocketDirection dir)
{
gint rc;
if (dir & AFSOCKET_DIR_RECV)
{
if (self->so_rcvbuf)
{
gint so_rcvbuf_set = 0;
socklen_t sz = sizeof(so_rcvbuf_set);
rc = setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &self->so_rcvbuf, sizeof(self->so_rcvbuf));
if (rc < 0 ||
getsockopt(fd, SOL_SOCKET, SO_RCVBUF, &so_rcvbuf_set, &sz) < 0 ||
sz != sizeof(so_rcvbuf_set) ||
so_rcvbuf_set < self->so_rcvbuf)
{
msg_warning("The kernel refused to set the receive buffer (SO_RCVBUF) to the requested size, you probably need to adjust buffer related kernel parameters",
evt_tag_int("so_rcvbuf", self->so_rcvbuf),
evt_tag_int("so_rcvbuf_set", so_rcvbuf_set));
}
}
}
if (dir & AFSOCKET_DIR_SEND)
{
if (self->so_sndbuf)
{
gint so_sndbuf_set = 0;
socklen_t sz = sizeof(so_sndbuf_set);
rc = setsockopt(fd, SOL_SOCKET, SO_SNDBUF, &self->so_sndbuf, sizeof(self->so_sndbuf));
if (rc < 0 ||
getsockopt(fd, SOL_SOCKET, SO_SNDBUF, &so_sndbuf_set, &sz) < 0 ||
sz != sizeof(so_sndbuf_set) ||
so_sndbuf_set < self->so_sndbuf)
{
msg_warning("The kernel refused to set the send buffer (SO_SNDBUF) to the requested size, you probably need to adjust buffer related kernel parameters",
evt_tag_int("so_sndbuf", self->so_sndbuf),
evt_tag_int("so_sndbuf_set", so_sndbuf_set));
}
}
if (self->so_broadcast)
setsockopt(fd, SOL_SOCKET, SO_BROADCAST, &self->so_broadcast, sizeof(self->so_broadcast));
}
setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &self->so_keepalive, sizeof(self->so_keepalive));
return TRUE;
}
void
socket_options_init_instance(SocketOptions *self)
{
self->setup_socket = socket_options_setup_socket_method;
self->free = g_free;
}
SocketOptions *
socket_options_new(void)
{
SocketOptions *self = g_new0(SocketOptions, 1);
socket_options_init_instance(self);
return self;
}
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