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718e3744 | 1 | /* IP forward control by sysctl function. |
2 | * Copyright (C) 1997, 1999 Kunihiro Ishiguro | |
3 | * | |
4 | * This file is part of GNU Zebra. | |
5 | * | |
6 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2, or (at your option) any | |
9 | * later version. | |
10 | * | |
11 | * GNU Zebra is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
896014f4 DL |
16 | * You should have received a copy of the GNU General Public License along |
17 | * with this program; see the file COPYING; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
718e3744 | 19 | */ |
20 | ||
21 | #include <zebra.h> | |
ddfeb486 DL |
22 | |
23 | #if !defined(GNU_LINUX) && !defined(SUNOS_5) | |
24 | ||
edd7c245 | 25 | #include "privs.h" |
a1ac18c4 | 26 | #include "zebra/ipforward.h" |
718e3744 | 27 | |
718e3744 | 28 | #include "log.h" |
174482ef | 29 | #include "lib_errors.h" |
718e3744 | 30 | |
31 | #define MIB_SIZ 4 | |
32 | ||
edd7c245 | 33 | extern struct zebra_privs_t zserv_privs; |
34 | ||
718e3744 | 35 | /* IPv4 forwarding control MIB. */ |
d62a17ae | 36 | int mib[MIB_SIZ] = {CTL_NET, PF_INET, IPPROTO_IP, IPCTL_FORWARDING}; |
718e3744 | 37 | |
d62a17ae | 38 | int ipforward(void) |
718e3744 | 39 | { |
d62a17ae | 40 | size_t len; |
41 | int ipforwarding = 0; | |
42 | ||
43 | len = sizeof ipforwarding; | |
44 | if (sysctl(mib, MIB_SIZ, &ipforwarding, &len, 0, 0) < 0) { | |
45 | zlog_warn("Can't get ipforwarding value"); | |
46 | return -1; | |
47 | } | |
48 | return ipforwarding; | |
718e3744 | 49 | } |
50 | ||
d62a17ae | 51 | int ipforward_on(void) |
718e3744 | 52 | { |
d62a17ae | 53 | size_t len; |
54 | int ipforwarding = 1; | |
55 | ||
56 | len = sizeof ipforwarding; | |
01b9e3fd DL |
57 | frr_elevate_privs(&zserv_privs) { |
58 | if (sysctl(mib, MIB_SIZ, NULL, NULL, &ipforwarding, len) < 0) { | |
59 | zlog_warn("Can't set ipforwarding on"); | |
60 | return -1; | |
61 | } | |
d62a17ae | 62 | } |
d62a17ae | 63 | return ipforwarding; |
718e3744 | 64 | } |
65 | ||
d62a17ae | 66 | int ipforward_off(void) |
718e3744 | 67 | { |
d62a17ae | 68 | size_t len; |
69 | int ipforwarding = 0; | |
70 | ||
71 | len = sizeof ipforwarding; | |
01b9e3fd DL |
72 | frr_elevate_privs(&zserv_privs) { |
73 | if (sysctl(mib, MIB_SIZ, NULL, NULL, &ipforwarding, len) < 0) { | |
74 | zlog_warn("Can't set ipforwarding on"); | |
75 | return -1; | |
76 | } | |
d62a17ae | 77 | } |
d62a17ae | 78 | return ipforwarding; |
718e3744 | 79 | } |
80 | ||
718e3744 | 81 | /* IPv6 forwarding control MIB. */ |
d62a17ae | 82 | int mib_ipv6[MIB_SIZ] = {CTL_NET, PF_INET6, |
d616d639 | 83 | #if defined(BSD_V6_SYSCTL) |
d62a17ae | 84 | IPPROTO_IPV6, IPV6CTL_FORWARDING |
d616d639 | 85 | #else /* NOT BSD_V6_SYSCTL */ |
d62a17ae | 86 | IPPROTO_IP, IP6CTL_FORWARDING |
d616d639 | 87 | #endif /* BSD_V6_SYSCTL */ |
d62a17ae | 88 | }; |
718e3744 | 89 | |
d62a17ae | 90 | int ipforward_ipv6(void) |
718e3744 | 91 | { |
d62a17ae | 92 | size_t len; |
93 | int ip6forwarding = 0; | |
94 | ||
95 | len = sizeof ip6forwarding; | |
01b9e3fd DL |
96 | frr_elevate_privs(&zserv_privs) { |
97 | if (sysctl(mib_ipv6, MIB_SIZ, &ip6forwarding, &len, 0, 0) < 0) { | |
98 | zlog_warn("can't get ip6forwarding value"); | |
99 | return -1; | |
100 | } | |
d62a17ae | 101 | } |
d62a17ae | 102 | return ip6forwarding; |
718e3744 | 103 | } |
104 | ||
d62a17ae | 105 | int ipforward_ipv6_on(void) |
718e3744 | 106 | { |
d62a17ae | 107 | size_t len; |
108 | int ip6forwarding = 1; | |
109 | ||
110 | len = sizeof ip6forwarding; | |
01b9e3fd DL |
111 | frr_elevate_privs(&zserv_privs) { |
112 | if (sysctl(mib_ipv6, MIB_SIZ, NULL, NULL, &ip6forwarding, len) < 0) { | |
113 | zlog_warn("can't get ip6forwarding value"); | |
114 | return -1; | |
115 | } | |
d62a17ae | 116 | } |
d62a17ae | 117 | return ip6forwarding; |
718e3744 | 118 | } |
119 | ||
d62a17ae | 120 | int ipforward_ipv6_off(void) |
718e3744 | 121 | { |
d62a17ae | 122 | size_t len; |
123 | int ip6forwarding = 0; | |
124 | ||
125 | len = sizeof ip6forwarding; | |
01b9e3fd DL |
126 | frr_elevate_privs(&zserv_privs) { |
127 | if (sysctl(mib_ipv6, MIB_SIZ, NULL, NULL, &ip6forwarding, len) < 0) { | |
128 | zlog_warn("can't get ip6forwarding value"); | |
129 | return -1; | |
130 | } | |
d62a17ae | 131 | } |
d62a17ae | 132 | return ip6forwarding; |
718e3744 | 133 | } |
ddfeb486 DL |
134 | |
135 | #endif /* !defined(GNU_LINUX) && !defined(SUNOS_5) */ |