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145 lines
3.3 KiB
C
145 lines
3.3 KiB
C
/* IP forward control by sysctl function.
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* Copyright (C) 1997, 1999 Kunihiro Ishiguro
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*
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* This file is part of GNU Zebra.
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*
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* GNU Zebra is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* GNU Zebra is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; see the file COPYING; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <zebra.h>
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#if !defined(GNU_LINUX) && !defined(SUNOS_5)
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#include "privs.h"
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#include "zebra/ipforward.h"
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#include "zebra/zebra_errors.h"
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#include "log.h"
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#include "lib_errors.h"
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#define MIB_SIZ 4
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extern struct zebra_privs_t zserv_privs;
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/* IPv4 forwarding control MIB. */
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int mib[MIB_SIZ] = {CTL_NET, PF_INET, IPPROTO_IP, IPCTL_FORWARDING};
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int ipforward(void)
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{
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size_t len;
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int ipforwarding = 0;
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len = sizeof ipforwarding;
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if (sysctl(mib, MIB_SIZ, &ipforwarding, &len, 0, 0) < 0) {
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flog_err_sys(EC_LIB_SYSTEM_CALL,
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"Can't get ipforwarding value");
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return -1;
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}
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return ipforwarding;
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}
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int ipforward_on(void)
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{
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size_t len;
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int ipforwarding = 1;
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len = sizeof ipforwarding;
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frr_elevate_privs(&zserv_privs) {
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if (sysctl(mib, MIB_SIZ, NULL, NULL, &ipforwarding, len) < 0) {
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flog_err_sys(EC_LIB_SYSTEM_CALL,
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"Can't set ipforwarding on");
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return -1;
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}
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}
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return ipforwarding;
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}
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int ipforward_off(void)
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{
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size_t len;
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int ipforwarding = 0;
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len = sizeof ipforwarding;
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frr_elevate_privs(&zserv_privs) {
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if (sysctl(mib, MIB_SIZ, NULL, NULL, &ipforwarding, len) < 0) {
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flog_err_sys(EC_LIB_SYSTEM_CALL,
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"Can't set ipforwarding on");
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return -1;
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}
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}
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return ipforwarding;
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}
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/* IPv6 forwarding control MIB. */
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int mib_ipv6[MIB_SIZ] = {CTL_NET, PF_INET6,
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#if defined(BSD_V6_SYSCTL)
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IPPROTO_IPV6, IPV6CTL_FORWARDING
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#else /* NOT BSD_V6_SYSCTL */
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IPPROTO_IP, IP6CTL_FORWARDING
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#endif /* BSD_V6_SYSCTL */
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};
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int ipforward_ipv6(void)
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{
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size_t len;
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int ip6forwarding = 0;
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len = sizeof ip6forwarding;
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frr_elevate_privs(&zserv_privs) {
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if (sysctl(mib_ipv6, MIB_SIZ, &ip6forwarding, &len, 0, 0) < 0) {
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flog_err_sys(EC_LIB_SYSTEM_CALL,
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"can't get ip6forwarding value");
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return -1;
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}
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}
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return ip6forwarding;
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}
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int ipforward_ipv6_on(void)
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{
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size_t len;
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int ip6forwarding = 1;
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len = sizeof ip6forwarding;
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frr_elevate_privs(&zserv_privs) {
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if (sysctl(mib_ipv6, MIB_SIZ, NULL, NULL, &ip6forwarding, len)
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< 0) {
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flog_err_sys(EC_LIB_SYSTEM_CALL,
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"can't get ip6forwarding value");
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return -1;
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}
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}
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return ip6forwarding;
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}
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int ipforward_ipv6_off(void)
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{
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size_t len;
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int ip6forwarding = 0;
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len = sizeof ip6forwarding;
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frr_elevate_privs(&zserv_privs) {
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if (sysctl(mib_ipv6, MIB_SIZ, NULL, NULL, &ip6forwarding, len)
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< 0) {
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flog_err_sys(EC_LIB_SYSTEM_CALL,
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"can't get ip6forwarding value");
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return -1;
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}
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}
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return ip6forwarding;
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}
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#endif /* !defined(GNU_LINUX) && !defined(SUNOS_5) */
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