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718e3744 | 1 | /* |
2 | * ipforward value get function for solaris. | |
3 | * Copyright (C) 1997 Kunihiro Ishiguro | |
4 | * | |
5 | * This file is part of GNU Zebra. | |
6 | * | |
7 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * GNU Zebra is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
896014f4 DL |
17 | * You should have received a copy of the GNU General Public License along |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
718e3744 | 20 | */ |
21 | ||
22 | #include <zebra.h> | |
269c67c5 | 23 | #include "log.h" |
edd7c245 | 24 | #include "prefix.h" |
718e3744 | 25 | |
9bcdb638 | 26 | #include "privs.h" |
a1ac18c4 | 27 | #include "zebra/ipforward.h" |
9bcdb638 | 28 | |
269c67c5 | 29 | /* |
30 | ** Solaris should define IP_DEV_NAME in <inet/ip.h>, but we'll save | |
31 | ** configure.in changes for another day. We can use the same device | |
32 | ** for both IPv4 and IPv6. | |
33 | */ | |
34 | /* #include <inet/ip.h> */ | |
35 | #ifndef IP_DEV_NAME | |
36 | #define IP_DEV_NAME "/dev/ip" | |
37 | #endif | |
9bcdb638 | 38 | |
edd7c245 | 39 | |
40 | extern struct zebra_privs_t zserv_privs; | |
41 | ||
9bcdb638 | 42 | /* This is a limited ndd style function that operates one integer |
269c67c5 | 43 | ** value only. Errors return -1. ND_SET commands return 0 on |
44 | ** success. ND_GET commands return the value on success (which could | |
45 | ** be -1 and be confused for an error). The parameter is the string | |
46 | ** name of the parameter being referenced. | |
47 | */ | |
718e3744 | 48 | |
269c67c5 | 49 | static int |
50 | solaris_nd(const int cmd, const char* parameter, const int value) | |
718e3744 | 51 | { |
269c67c5 | 52 | #define ND_BUFFER_SIZE 1024 |
53 | int fd; | |
54 | char nd_buf[ND_BUFFER_SIZE]; | |
55 | struct strioctl strioctl; | |
56 | const char* device = IP_DEV_NAME; | |
57 | int retval; | |
58 | memset(nd_buf, '\0', ND_BUFFER_SIZE); | |
59 | /* | |
60 | ** ND_SET takes a NULL delimited list of strings further terminated | |
61 | ** buy a NULL. ND_GET returns a list in a similar layout, although | |
62 | ** here we only use the first result. | |
63 | */ | |
66e9488c | 64 | if (cmd == ND_SET) |
269c67c5 | 65 | snprintf(nd_buf, ND_BUFFER_SIZE, "%s%c%d%c", parameter, '\0', value,'\0'); |
66e9488c | 66 | else if (cmd == ND_GET) |
269c67c5 | 67 | snprintf(nd_buf, ND_BUFFER_SIZE, "%s", parameter); |
66e9488c | 68 | else { |
69 | zlog_err("internal error - inappropriate command given to " | |
70 | "solaris_nd()%s:%d", __FILE__, __LINE__); | |
718e3744 | 71 | return -1; |
72 | } | |
edd7c245 | 73 | |
269c67c5 | 74 | strioctl.ic_cmd = cmd; |
75 | strioctl.ic_timout = 0; | |
76 | strioctl.ic_len = ND_BUFFER_SIZE; | |
77 | strioctl.ic_dp = nd_buf; | |
edd7c245 | 78 | |
79 | if ( zserv_privs.change (ZPRIVS_RAISE) ) | |
80 | zlog_err ("solaris_nd: Can't raise privileges"); | |
81 | if ((fd = open (device, O_RDWR)) < 0) | |
82 | { | |
6099b3b5 | 83 | zlog_warn("failed to open device %s - %s", device, safe_strerror(errno)); |
edd7c245 | 84 | if ( zserv_privs.change (ZPRIVS_LOWER) ) |
85 | zlog_err ("solaris_nd: Can't lower privileges"); | |
86 | return -1; | |
87 | } | |
88 | if (ioctl (fd, I_STR, &strioctl) < 0) | |
89 | { | |
4460e7a4 | 90 | int save_errno = errno; |
edd7c245 | 91 | if ( zserv_privs.change (ZPRIVS_LOWER) ) |
92 | zlog_err ("solaris_nd: Can't lower privileges"); | |
93 | close (fd); | |
4460e7a4 | 94 | zlog_warn("ioctl I_STR failed on device %s - %s", |
95 | device, safe_strerror(save_errno)); | |
edd7c245 | 96 | return -1; |
97 | } | |
269c67c5 | 98 | close(fd); |
edd7c245 | 99 | if ( zserv_privs.change (ZPRIVS_LOWER) ) |
100 | zlog_err ("solaris_nd: Can't lower privileges"); | |
101 | ||
102 | if (cmd == ND_GET) | |
103 | { | |
104 | errno = 0; | |
105 | retval = atoi(nd_buf); | |
106 | if (errno) | |
107 | { | |
108 | zlog_warn("failed to convert returned value to integer - %s", | |
6099b3b5 | 109 | safe_strerror(errno)); |
edd7c245 | 110 | retval = -1; |
111 | } | |
112 | } | |
113 | else | |
114 | { | |
115 | retval = 0; | |
269c67c5 | 116 | } |
269c67c5 | 117 | return retval; |
118 | } | |
718e3744 | 119 | |
269c67c5 | 120 | static int |
121 | solaris_nd_set(const char* parameter, const int value) { | |
122 | return solaris_nd(ND_SET, parameter, value); | |
123 | } | |
124 | static int | |
125 | solaris_nd_get(const char* parameter) { | |
126 | return solaris_nd(ND_GET, parameter, 0); | |
127 | } | |
128 | int | |
a1ac18c4 | 129 | ipforward(void) |
269c67c5 | 130 | { |
131 | return solaris_nd_get("ip_forwarding"); | |
718e3744 | 132 | } |
133 | ||
134 | int | |
a1ac18c4 | 135 | ipforward_on (void) |
718e3744 | 136 | { |
269c67c5 | 137 | (void) solaris_nd_set("ip_forwarding", 1); |
138 | return ipforward(); | |
718e3744 | 139 | } |
140 | ||
141 | int | |
a1ac18c4 | 142 | ipforward_off (void) |
718e3744 | 143 | { |
269c67c5 | 144 | (void) solaris_nd_set("ip_forwarding", 0); |
145 | return ipforward(); | |
146 | } | |
a1ac18c4 | 147 | int ipforward_ipv6(void) |
269c67c5 | 148 | { |
66e9488c | 149 | return solaris_nd_get("ip6_forwarding"); |
269c67c5 | 150 | } |
151 | int | |
a1ac18c4 | 152 | ipforward_ipv6_on (void) |
269c67c5 | 153 | { |
154 | (void) solaris_nd_set("ip6_forwarding", 1); | |
155 | return ipforward_ipv6(); | |
156 | } | |
157 | int | |
a1ac18c4 | 158 | ipforward_ipv6_off (void) |
269c67c5 | 159 | { |
160 | (void) solaris_nd_set("ip6_forwarding", 0); | |
161 | return ipforward_ipv6(); | |
718e3744 | 162 | } |