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/*
* Copyright (C) 2006, 2007 BATMAN contributors:
* Stefan Sperling <stsp@stsp.name>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
* License as published by the Free Software Foundation.
*
* 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 Street, Fifth Floor, Boston, MA
* 02110-1301, USA
*
*/
/* This file contains functions that deal with BSD kernel interfaces,
* such as sysctls. */
#warning BSD support is known broken - if you compile this on BSD you are expected to fix it :-P
#include <sys/types.h>
#include <sys/param.h>
#include <sys/sysctl.h>
#include <sys/socket.h>
#include <fcntl.h>
#include <stdio.h>
#include <errno.h>
#include <err.h>
#include "../os.h"
#include "../batman.h"
void set_forwarding(int32_t state)
{
int mib[4];
/* FreeBSD allows us to set a boolean sysctl to anything.
* Check the value for sanity. */
if (state < 0 || state > 1) {
errno = EINVAL;
err(1, "set_forwarding: %i", state);
}
/* "net.inet.ip.forwarding" */
mib[0] = CTL_NET;
mib[1] = PF_INET;
mib[2] = IPPROTO_IP;
mib[3] = IPCTL_FORWARDING;
if (sysctl(mib, 4, NULL, 0, (void*)&state, sizeof(state)) == -1)
err(1, "Cannot change net.inet.ip.forwarding");
}
int32_t get_forwarding(void)
{
int state;
size_t len;
int mib[4];
/* "net.inet.ip.forwarding" */
mib[0] = CTL_NET;
mib[1] = PF_INET;
mib[2] = IPPROTO_IP;
mib[3] = IPCTL_FORWARDING;
len = sizeof(state);
if (sysctl(mib, 4, &state, &len, NULL, 0) == -1)
err(1, "Cannot tell if packet forwarding is enabled");
return state;
}
void set_send_redirects(int32_t state, char* BATMANUNUSED(dev))
{
int mib[4];
/* FreeBSD allows us to set a boolean sysctl to anything.
* Check the value for sanity. */
if (state < 0 || state > 1) {
errno = EINVAL;
err(1, "set_send_redirects: %i", state);
}
/* "net.inet.ip.redirect" */
mib[0] = CTL_NET;
mib[1] = PF_INET;
mib[2] = IPPROTO_IP;
mib[3] = IPCTL_SENDREDIRECTS;
if (sysctl(mib, 4, NULL, 0, (void*)&state, sizeof(state)) == -1)
err(1, "Cannot change net.inet.ip.redirect");
}
int32_t get_send_redirects(char *BATMANUNUSED(dev))
{
int state;
size_t len;
int mib[4];
/* "net.inet.ip.redirect" */
mib[0] = CTL_NET;
mib[1] = PF_INET;
mib[2] = IPPROTO_IP;
mib[3] = IPCTL_SENDREDIRECTS;
len = sizeof(state);
if (sysctl(mib, 4, &state, &len, NULL, 0) == -1)
err(1, "Cannot tell if redirects are enabled");
return state;
}
void set_rp_filter( int32_t BATMANUNUSED(state), char* BATMANUNUSED(dev) )
{
/* On BSD, reverse path filtering should be disabled in the firewall. */
return;
}
int32_t get_rp_filter( char *BATMANUNUSED(dev) )
{
/* On BSD, reverse path filtering should be disabled in the firewall. */
return 0;
}
int8_t bind_to_iface( int32_t BATMANUNUSED(udp_recv_sock), char *BATMANUNUSED(dev) )
{
/* XXX: Is binding a socket to a specific
* interface possible in *BSD?
* Possibly via bpf... */
return 1;
}
int32_t use_gateway_module(void)
{
return -1;
}
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