1 files changed, 144 insertions, 0 deletions
diff --git a/zebra/ipforward_sysctl.c b/zebra/ipforward_sysctl.c
new file mode 100644
index 0000000..0015018
--- /dev/null
+++ b/zebra/ipforward_sysctl.c
@@ -0,0 +1,144 @@
+/* IP forward control by sysctl function.
+ * Copyright (C) 1997, 1999 Kunihiro Ishiguro
+ *
+ * This file is part of GNU Zebra.
+ *
+ * GNU Zebra is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * GNU Zebra 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; see the file COPYING; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <zebra.h>
+
+#if !defined(GNU_LINUX)
+
+#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) */