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// SPDX-License-Identifier: GPL-2.0-or-later
/* IP forward control by sysctl function.
* Copyright (C) 1997, 1999 Kunihiro Ishiguro
*/
#include <zebra.h>
#if !defined(GNU_LINUX)
#include <sys/sysctl.h>
#include "privs.h"
#include "zebra/ipforward.h"
#include "zebra/zebra_errors.h"
#include "log.h"
#include "lib_errors.h"
#define MIB_SIZ 4
extern struct zebra_privs_t zserv_privs;
/* IPv4 forwarding control MIB. */
int mib[MIB_SIZ] = {CTL_NET, PF_INET, IPPROTO_IP, IPCTL_FORWARDING};
int ipforward(void)
{
size_t len;
int ipforwarding = 0;
len = sizeof(ipforwarding);
if (sysctl(mib, MIB_SIZ, &ipforwarding, &len, 0, 0) < 0) {
flog_err_sys(EC_LIB_SYSTEM_CALL,
"Can't get ipforwarding value");
return -1;
}
return ipforwarding;
}
int ipforward_on(void)
{
size_t len;
int ipforwarding = 1;
len = sizeof(ipforwarding);
frr_with_privs(&zserv_privs) {
if (sysctl(mib, MIB_SIZ, NULL, NULL, &ipforwarding, len) < 0) {
flog_err_sys(EC_LIB_SYSTEM_CALL,
"Can't set ipforwarding on");
return -1;
}
}
return ipforwarding;
}
int ipforward_off(void)
{
size_t len;
int ipforwarding = 0;
len = sizeof(ipforwarding);
frr_with_privs(&zserv_privs) {
if (sysctl(mib, MIB_SIZ, NULL, NULL, &ipforwarding, len) < 0) {
flog_err_sys(EC_LIB_SYSTEM_CALL,
"Can't set ipforwarding on");
return -1;
}
}
return ipforwarding;
}
/* IPv6 forwarding control MIB. */
int mib_ipv6[MIB_SIZ] = {CTL_NET, PF_INET6,
#if defined(BSD_V6_SYSCTL)
IPPROTO_IPV6, IPV6CTL_FORWARDING
#else /* NOT BSD_V6_SYSCTL */
IPPROTO_IP, IP6CTL_FORWARDING
#endif /* BSD_V6_SYSCTL */
};
int ipforward_ipv6(void)
{
size_t len;
int ip6forwarding = 0;
len = sizeof(ip6forwarding);
frr_with_privs(&zserv_privs) {
if (sysctl(mib_ipv6, MIB_SIZ, &ip6forwarding, &len, 0, 0) < 0) {
flog_err_sys(EC_LIB_SYSTEM_CALL,
"can't get ip6forwarding value");
return -1;
}
}
return ip6forwarding;
}
int ipforward_ipv6_on(void)
{
size_t len;
int ip6forwarding = 1;
len = sizeof(ip6forwarding);
frr_with_privs(&zserv_privs) {
if (sysctl(mib_ipv6, MIB_SIZ, NULL, NULL, &ip6forwarding, len)
< 0) {
flog_err_sys(EC_LIB_SYSTEM_CALL,
"can't get ip6forwarding value");
return -1;
}
}
return ip6forwarding;
}
int ipforward_ipv6_off(void)
{
size_t len;
int ip6forwarding = 0;
len = sizeof(ip6forwarding);
frr_with_privs(&zserv_privs) {
if (sysctl(mib_ipv6, MIB_SIZ, NULL, NULL, &ip6forwarding, len)
< 0) {
flog_err_sys(EC_LIB_SYSTEM_CALL,
"can't get ip6forwarding value");
return -1;
}
}
return ip6forwarding;
}
#endif /* !defined(GNU_LINUX) */
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