Bernhard Reutner-Fischer | dac7ff1 | 2006-04-12 17:55:51 +0000 | [diff] [blame] | 1 | /* vi: set sw=4 ts=4: */ |
Eric Andersen | ec45595 | 2001-02-14 08:11:27 +0000 | [diff] [blame] | 2 | /* route |
| 3 | * |
| 4 | * Similar to the standard Unix route, but with only the necessary |
Eric Andersen | 51b8bd6 | 2002-07-03 11:46:38 +0000 | [diff] [blame] | 5 | * parts for AF_INET and AF_INET6 |
Eric Andersen | ec45595 | 2001-02-14 08:11:27 +0000 | [diff] [blame] | 6 | * |
| 7 | * Bjorn Wesen, Axis Communications AB |
| 8 | * |
Eric Andersen | b940850 | 2001-09-05 19:32:00 +0000 | [diff] [blame] | 9 | * Author of the original route: |
Eric Andersen | ec45595 | 2001-02-14 08:11:27 +0000 | [diff] [blame] | 10 | * Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org> |
| 11 | * (derived from FvK's 'route.c 1.70 01/04/94') |
| 12 | * |
Denys Vlasenko | 0ef64bd | 2010-08-16 20:14:46 +0200 | [diff] [blame] | 13 | * Licensed under GPLv2 or later, see file LICENSE in this source tree. |
Eric Andersen | ec45595 | 2001-02-14 08:11:27 +0000 | [diff] [blame] | 14 | * |
Eric Andersen | ec45595 | 2001-02-14 08:11:27 +0000 | [diff] [blame] | 15 | * |
Eric Andersen | 68be2ab | 2001-02-14 19:26:39 +0000 | [diff] [blame] | 16 | * displayroute() code added by Vladimir N. Oleynik <dzo@simtreas.ru> |
Eric Andersen | 26d53eb | 2001-03-07 06:33:01 +0000 | [diff] [blame] | 17 | * adjustments by Larry Doolittle <LRDoolittle@lbl.gov> |
Eric Andersen | 51b8bd6 | 2002-07-03 11:46:38 +0000 | [diff] [blame] | 18 | * |
| 19 | * IPV6 support added by Bart Visscher <magick@linux-fan.com> |
Eric Andersen | ec45595 | 2001-02-14 08:11:27 +0000 | [diff] [blame] | 20 | */ |
| 21 | |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 22 | /* 2004/03/09 Manuel Novoa III <mjn3@codepoet.org> |
| 23 | * |
| 24 | * Rewritten to fix several bugs, add additional error checking, and |
| 25 | * remove ridiculous amounts of bloat. |
| 26 | */ |
| 27 | |
Pere Orga | 5bc8c00 | 2011-04-11 03:29:49 +0200 | [diff] [blame] | 28 | //usage:#define route_trivial_usage |
| 29 | //usage: "[{add|del|delete}]" |
| 30 | //usage:#define route_full_usage "\n\n" |
| 31 | //usage: "Edit kernel routing tables\n" |
Pere Orga | 5bc8c00 | 2011-04-11 03:29:49 +0200 | [diff] [blame] | 32 | //usage: "\n -n Don't resolve names" |
| 33 | //usage: "\n -e Display other/more information" |
| 34 | //usage: "\n -A inet" IF_FEATURE_IPV6("{6}") " Select address family" |
| 35 | |
Ricardo Cerqueira | 04f05b8 | 2012-11-19 14:32:59 +0000 | [diff] [blame] | 36 | #include <sys/socket.h> |
Rob Landley | d921b2e | 2006-08-03 15:41:12 +0000 | [diff] [blame] | 37 | #include <net/route.h> |
| 38 | #include <net/if.h> |
Tanguy Pruvot | 8a6c2c2 | 2012-04-28 00:24:09 +0200 | [diff] [blame] | 39 | |
Denis Vlasenko | b6adbf1 | 2007-05-26 19:00:18 +0000 | [diff] [blame] | 40 | #include "libbb.h" |
| 41 | #include "inet_common.h" |
| 42 | |
Tanguy Pruvot | 8aeb371 | 2011-06-30 08:59:26 +0200 | [diff] [blame] | 43 | #if ENABLE_FEATURE_IPV6 |
maxwen | 27116ba | 2015-08-14 21:41:28 +0200 | [diff] [blame] | 44 | #include <linux/ipv6_route.h> |
Tanguy Pruvot | 8aeb371 | 2011-06-30 08:59:26 +0200 | [diff] [blame] | 45 | #endif |
Eric Andersen | 51b8bd6 | 2002-07-03 11:46:38 +0000 | [diff] [blame] | 46 | |
Eric Andersen | 863a3e1 | 2001-08-27 17:57:27 +0000 | [diff] [blame] | 47 | #ifndef RTF_UP |
| 48 | /* Keep this in sync with /usr/src/linux/include/linux/route.h */ |
Glenn L McGrath | 7c58e9b | 2002-08-22 18:24:43 +0000 | [diff] [blame] | 49 | #define RTF_UP 0x0001 /* route usable */ |
| 50 | #define RTF_GATEWAY 0x0002 /* destination is a gateway */ |
| 51 | #define RTF_HOST 0x0004 /* host entry (net otherwise) */ |
| 52 | #define RTF_REINSTATE 0x0008 /* reinstate route after tmout */ |
| 53 | #define RTF_DYNAMIC 0x0010 /* created dyn. (by redirect) */ |
| 54 | #define RTF_MODIFIED 0x0020 /* modified dyn. (by redirect) */ |
| 55 | #define RTF_MTU 0x0040 /* specific MTU for this route */ |
Eric Andersen | 863a3e1 | 2001-08-27 17:57:27 +0000 | [diff] [blame] | 56 | #ifndef RTF_MSS |
Glenn L McGrath | 7c58e9b | 2002-08-22 18:24:43 +0000 | [diff] [blame] | 57 | #define RTF_MSS RTF_MTU /* Compatibility :-( */ |
Eric Andersen | 863a3e1 | 2001-08-27 17:57:27 +0000 | [diff] [blame] | 58 | #endif |
Glenn L McGrath | 7c58e9b | 2002-08-22 18:24:43 +0000 | [diff] [blame] | 59 | #define RTF_WINDOW 0x0080 /* per route window clamping */ |
| 60 | #define RTF_IRTT 0x0100 /* Initial round trip time */ |
| 61 | #define RTF_REJECT 0x0200 /* Reject route */ |
Eric Andersen | 863a3e1 | 2001-08-27 17:57:27 +0000 | [diff] [blame] | 62 | #endif |
| 63 | |
Tanguy Pruvot | 8aeb371 | 2011-06-30 08:59:26 +0200 | [diff] [blame] | 64 | #ifndef RTF_CACHE |
| 65 | #define RTF_DEFAULT 0x00010000 /* default - learned via ND */ |
| 66 | #define RTF_ADDRCONF 0x00040000 /* addrconf route - RA */ |
| 67 | #define RTF_CACHE 0x01000000 /* cache entry */ |
| 68 | #endif |
| 69 | |
Denis Vlasenko | ff131b9 | 2007-04-10 15:42:06 +0000 | [diff] [blame] | 70 | #if defined(SIOCADDRTOLD) || defined(RTF_IRTT) /* route */ |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 71 | #define HAVE_NEW_ADDRT 1 |
| 72 | #endif |
| 73 | |
| 74 | #if HAVE_NEW_ADDRT |
| 75 | #define mask_in_addr(x) (((struct sockaddr_in *)&((x).rt_genmask))->sin_addr.s_addr) |
| 76 | #define full_mask(x) (x) |
| 77 | #else |
| 78 | #define mask_in_addr(x) ((x).rt_genmask) |
| 79 | #define full_mask(x) (((struct sockaddr_in *)&(x))->sin_addr.s_addr) |
| 80 | #endif |
| 81 | |
| 82 | /* The RTACTION entries must agree with tbl_verb[] below! */ |
Denis Vlasenko | 703e202 | 2007-01-22 14:12:08 +0000 | [diff] [blame] | 83 | #define RTACTION_ADD 1 |
| 84 | #define RTACTION_DEL 2 |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 85 | |
| 86 | /* For the various tbl_*[] arrays, the 1st byte is the offset to |
| 87 | * the next entry and the 2nd byte is return value. */ |
| 88 | |
Denis Vlasenko | 703e202 | 2007-01-22 14:12:08 +0000 | [diff] [blame] | 89 | #define NET_FLAG 1 |
| 90 | #define HOST_FLAG 2 |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 91 | |
| 92 | /* We remap '-' to '#' to avoid problems with getopt. */ |
Denis Vlasenko | 6ca409e | 2007-08-12 20:58:27 +0000 | [diff] [blame] | 93 | static const char tbl_hash_net_host[] ALIGN1 = |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 94 | "\007\001#net\0" |
Tim Riker | c1ef7bd | 2006-01-25 00:08:53 +0000 | [diff] [blame] | 95 | /* "\010\002#host\0" */ |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 96 | "\007\002#host" /* Since last, we can save a byte. */ |
| 97 | ; |
| 98 | |
Denis Vlasenko | 703e202 | 2007-01-22 14:12:08 +0000 | [diff] [blame] | 99 | #define KW_TAKES_ARG 020 |
| 100 | #define KW_SETS_FLAG 040 |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 101 | |
Denis Vlasenko | 703e202 | 2007-01-22 14:12:08 +0000 | [diff] [blame] | 102 | #define KW_IPVx_METRIC 020 |
| 103 | #define KW_IPVx_NETMASK 021 |
| 104 | #define KW_IPVx_GATEWAY 022 |
| 105 | #define KW_IPVx_MSS 023 |
| 106 | #define KW_IPVx_WINDOW 024 |
| 107 | #define KW_IPVx_IRTT 025 |
| 108 | #define KW_IPVx_DEVICE 026 |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 109 | |
Denis Vlasenko | 703e202 | 2007-01-22 14:12:08 +0000 | [diff] [blame] | 110 | #define KW_IPVx_FLAG_ONLY 040 |
| 111 | #define KW_IPVx_REJECT 040 |
| 112 | #define KW_IPVx_MOD 041 |
| 113 | #define KW_IPVx_DYN 042 |
| 114 | #define KW_IPVx_REINSTATE 043 |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 115 | |
Denis Vlasenko | 6ca409e | 2007-08-12 20:58:27 +0000 | [diff] [blame] | 116 | static const char tbl_ipvx[] ALIGN1 = |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 117 | /* 020 is the "takes an arg" bit */ |
| 118 | #if HAVE_NEW_ADDRT |
| 119 | "\011\020metric\0" |
| 120 | #endif |
| 121 | "\012\021netmask\0" |
| 122 | "\005\022gw\0" |
| 123 | "\012\022gateway\0" |
| 124 | "\006\023mss\0" |
| 125 | "\011\024window\0" |
| 126 | #ifdef RTF_IRTT |
| 127 | "\007\025irtt\0" |
| 128 | #endif |
| 129 | "\006\026dev\0" |
| 130 | "\011\026device\0" |
| 131 | /* 040 is the "sets a flag" bit - MUST match flags_ipvx[] values below. */ |
| 132 | #ifdef RTF_REJECT |
| 133 | "\011\040reject\0" |
| 134 | #endif |
| 135 | "\006\041mod\0" |
| 136 | "\006\042dyn\0" |
Tim Riker | c1ef7bd | 2006-01-25 00:08:53 +0000 | [diff] [blame] | 137 | /* "\014\043reinstate\0" */ |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 138 | "\013\043reinstate" /* Since last, we can save a byte. */ |
| 139 | ; |
| 140 | |
| 141 | static const int flags_ipvx[] = { /* MUST match tbl_ipvx[] values above. */ |
| 142 | #ifdef RTF_REJECT |
| 143 | RTF_REJECT, |
| 144 | #endif |
| 145 | RTF_MODIFIED, |
| 146 | RTF_DYNAMIC, |
| 147 | RTF_REINSTATE |
| 148 | }; |
| 149 | |
| 150 | static int kw_lookup(const char *kwtbl, char ***pargs) |
| 151 | { |
| 152 | if (**pargs) { |
| 153 | do { |
| 154 | if (strcmp(kwtbl+2, **pargs) == 0) { /* Found a match. */ |
| 155 | *pargs += 1; |
| 156 | if (kwtbl[1] & KW_TAKES_ARG) { |
| 157 | if (!**pargs) { /* No more args! */ |
| 158 | bb_show_usage(); |
| 159 | } |
| 160 | *pargs += 1; /* Calling routine will use args[-1]. */ |
| 161 | } |
| 162 | return kwtbl[1]; |
| 163 | } |
| 164 | kwtbl += *kwtbl; |
| 165 | } while (*kwtbl); |
| 166 | } |
| 167 | return 0; |
| 168 | } |
| 169 | |
| 170 | /* Add or delete a route, depending on action. */ |
| 171 | |
Denys Vlasenko | adf922e | 2009-10-08 14:35:37 +0200 | [diff] [blame] | 172 | static NOINLINE void INET_setroute(int action, char **args) |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 173 | { |
Denys Vlasenko | b3b6c8b | 2011-01-20 11:29:00 +0100 | [diff] [blame] | 174 | /* char buffer instead of bona-fide struct avoids aliasing warning */ |
| 175 | char rt_buf[sizeof(struct rtentry)]; |
| 176 | struct rtentry *const rt = (void *)rt_buf; |
| 177 | |
Eric Andersen | 0cb6f35 | 2006-01-30 22:30:41 +0000 | [diff] [blame] | 178 | const char *netmask = NULL; |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 179 | int skfd, isnet, xflag; |
| 180 | |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 181 | /* Grab the -net or -host options. Remember they were transformed. */ |
| 182 | xflag = kw_lookup(tbl_hash_net_host, &args); |
| 183 | |
| 184 | /* If we did grab -net or -host, make sure we still have an arg left. */ |
| 185 | if (*args == NULL) { |
| 186 | bb_show_usage(); |
| 187 | } |
| 188 | |
| 189 | /* Clean out the RTREQ structure. */ |
Denys Vlasenko | b3b6c8b | 2011-01-20 11:29:00 +0100 | [diff] [blame] | 190 | memset(rt, 0, sizeof(*rt)); |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 191 | |
| 192 | { |
| 193 | const char *target = *args++; |
"Vladimir N. Oleynik" | 5775aa2 | 2006-01-25 16:17:58 +0000 | [diff] [blame] | 194 | char *prefix; |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 195 | |
"Vladimir N. Oleynik" | 5775aa2 | 2006-01-25 16:17:58 +0000 | [diff] [blame] | 196 | /* recognize x.x.x.x/mask format. */ |
| 197 | prefix = strchr(target, '/'); |
Denis Vlasenko | 51742f4 | 2007-04-12 00:32:05 +0000 | [diff] [blame] | 198 | if (prefix) { |
"Vladimir N. Oleynik" | 5775aa2 | 2006-01-25 16:17:58 +0000 | [diff] [blame] | 199 | int prefix_len; |
| 200 | |
Denis Vlasenko | 1385899 | 2006-10-08 12:49:22 +0000 | [diff] [blame] | 201 | prefix_len = xatoul_range(prefix+1, 0, 32); |
Denys Vlasenko | b3b6c8b | 2011-01-20 11:29:00 +0100 | [diff] [blame] | 202 | mask_in_addr(*rt) = htonl( ~(0xffffffffUL >> prefix_len)); |
"Vladimir N. Oleynik" | 5775aa2 | 2006-01-25 16:17:58 +0000 | [diff] [blame] | 203 | *prefix = '\0'; |
| 204 | #if HAVE_NEW_ADDRT |
Denys Vlasenko | b3b6c8b | 2011-01-20 11:29:00 +0100 | [diff] [blame] | 205 | rt->rt_genmask.sa_family = AF_INET; |
"Vladimir N. Oleynik" | 5775aa2 | 2006-01-25 16:17:58 +0000 | [diff] [blame] | 206 | #endif |
| 207 | } else { |
| 208 | /* Default netmask. */ |
Denys Vlasenko | 0004e99 | 2010-09-01 12:01:17 +0200 | [diff] [blame] | 209 | netmask = "default"; |
"Vladimir N. Oleynik" | 5775aa2 | 2006-01-25 16:17:58 +0000 | [diff] [blame] | 210 | } |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 211 | /* Prefer hostname lookup is -host flag (xflag==1) was given. */ |
Denys Vlasenko | b3b6c8b | 2011-01-20 11:29:00 +0100 | [diff] [blame] | 212 | isnet = INET_resolve(target, (struct sockaddr_in *) &rt->rt_dst, |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 213 | (xflag & HOST_FLAG)); |
| 214 | if (isnet < 0) { |
| 215 | bb_error_msg_and_die("resolving %s", target); |
| 216 | } |
Denis Vlasenko | 51742f4 | 2007-04-12 00:32:05 +0000 | [diff] [blame] | 217 | if (prefix) { |
"Vladimir N. Oleynik" | 5775aa2 | 2006-01-25 16:17:58 +0000 | [diff] [blame] | 218 | /* do not destroy prefix for process args */ |
| 219 | *prefix = '/'; |
| 220 | } |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 221 | } |
| 222 | |
| 223 | if (xflag) { /* Reinit isnet if -net or -host was specified. */ |
| 224 | isnet = (xflag & NET_FLAG); |
| 225 | } |
| 226 | |
| 227 | /* Fill in the other fields. */ |
Denys Vlasenko | b3b6c8b | 2011-01-20 11:29:00 +0100 | [diff] [blame] | 228 | rt->rt_flags = ((isnet) ? RTF_UP : (RTF_UP | RTF_HOST)); |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 229 | |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 230 | while (*args) { |
| 231 | int k = kw_lookup(tbl_ipvx, &args); |
| 232 | const char *args_m1 = args[-1]; |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 233 | |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 234 | if (k & KW_IPVx_FLAG_ONLY) { |
Denys Vlasenko | b3b6c8b | 2011-01-20 11:29:00 +0100 | [diff] [blame] | 235 | rt->rt_flags |= flags_ipvx[k & 3]; |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 236 | continue; |
| 237 | } |
| 238 | |
| 239 | #if HAVE_NEW_ADDRT |
| 240 | if (k == KW_IPVx_METRIC) { |
Denys Vlasenko | b3b6c8b | 2011-01-20 11:29:00 +0100 | [diff] [blame] | 241 | rt->rt_metric = xatoul(args_m1) + 1; |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 242 | continue; |
| 243 | } |
| 244 | #endif |
| 245 | |
| 246 | if (k == KW_IPVx_NETMASK) { |
| 247 | struct sockaddr mask; |
| 248 | |
Denys Vlasenko | b3b6c8b | 2011-01-20 11:29:00 +0100 | [diff] [blame] | 249 | if (mask_in_addr(*rt)) { |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 250 | bb_show_usage(); |
| 251 | } |
| 252 | |
| 253 | netmask = args_m1; |
| 254 | isnet = INET_resolve(netmask, (struct sockaddr_in *) &mask, 0); |
| 255 | if (isnet < 0) { |
| 256 | bb_error_msg_and_die("resolving %s", netmask); |
| 257 | } |
Denys Vlasenko | b3b6c8b | 2011-01-20 11:29:00 +0100 | [diff] [blame] | 258 | rt->rt_genmask = full_mask(mask); |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 259 | continue; |
| 260 | } |
| 261 | |
| 262 | if (k == KW_IPVx_GATEWAY) { |
Denys Vlasenko | b3b6c8b | 2011-01-20 11:29:00 +0100 | [diff] [blame] | 263 | if (rt->rt_flags & RTF_GATEWAY) { |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 264 | bb_show_usage(); |
| 265 | } |
| 266 | |
| 267 | isnet = INET_resolve(args_m1, |
Denys Vlasenko | b3b6c8b | 2011-01-20 11:29:00 +0100 | [diff] [blame] | 268 | (struct sockaddr_in *) &rt->rt_gateway, 1); |
| 269 | rt->rt_flags |= RTF_GATEWAY; |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 270 | |
| 271 | if (isnet) { |
| 272 | if (isnet < 0) { |
| 273 | bb_error_msg_and_die("resolving %s", args_m1); |
| 274 | } |
| 275 | bb_error_msg_and_die("gateway %s is a NETWORK", args_m1); |
| 276 | } |
| 277 | continue; |
| 278 | } |
| 279 | |
| 280 | if (k == KW_IPVx_MSS) { /* Check valid MSS bounds. */ |
Denys Vlasenko | b3b6c8b | 2011-01-20 11:29:00 +0100 | [diff] [blame] | 281 | rt->rt_flags |= RTF_MSS; |
| 282 | rt->rt_mss = xatoul_range(args_m1, 64, 32768); |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 283 | continue; |
| 284 | } |
| 285 | |
| 286 | if (k == KW_IPVx_WINDOW) { /* Check valid window bounds. */ |
Denys Vlasenko | b3b6c8b | 2011-01-20 11:29:00 +0100 | [diff] [blame] | 287 | rt->rt_flags |= RTF_WINDOW; |
| 288 | rt->rt_window = xatoul_range(args_m1, 128, INT_MAX); |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 289 | continue; |
| 290 | } |
| 291 | |
| 292 | #ifdef RTF_IRTT |
| 293 | if (k == KW_IPVx_IRTT) { |
Denys Vlasenko | b3b6c8b | 2011-01-20 11:29:00 +0100 | [diff] [blame] | 294 | rt->rt_flags |= RTF_IRTT; |
| 295 | rt->rt_irtt = xatoul(args_m1); |
| 296 | rt->rt_irtt *= (sysconf(_SC_CLK_TCK) / 100); /* FIXME */ |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 297 | #if 0 /* FIXME: do we need to check anything of this? */ |
Denys Vlasenko | b3b6c8b | 2011-01-20 11:29:00 +0100 | [diff] [blame] | 298 | if (rt->rt_irtt < 1 || rt->rt_irtt > (120 * HZ)) { |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 299 | bb_error_msg_and_die("bad irtt"); |
| 300 | } |
| 301 | #endif |
| 302 | continue; |
| 303 | } |
| 304 | #endif |
| 305 | |
| 306 | /* Device is special in that it can be the last arg specified |
| 307 | * and doesn't requre the dev/device keyword in that case. */ |
Denys Vlasenko | b3b6c8b | 2011-01-20 11:29:00 +0100 | [diff] [blame] | 308 | if (!rt->rt_dev && ((k == KW_IPVx_DEVICE) || (!k && !*++args))) { |
Manuel Novoa III | 539fa95 | 2004-03-19 23:27:08 +0000 | [diff] [blame] | 309 | /* Don't use args_m1 here since args may have changed! */ |
Denys Vlasenko | b3b6c8b | 2011-01-20 11:29:00 +0100 | [diff] [blame] | 310 | rt->rt_dev = args[-1]; |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 311 | continue; |
| 312 | } |
| 313 | |
| 314 | /* Nothing matched. */ |
| 315 | bb_show_usage(); |
| 316 | } |
| 317 | |
| 318 | #ifdef RTF_REJECT |
Denys Vlasenko | b3b6c8b | 2011-01-20 11:29:00 +0100 | [diff] [blame] | 319 | if ((rt->rt_flags & RTF_REJECT) && !rt->rt_dev) { |
| 320 | rt->rt_dev = (char*)"lo"; |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 321 | } |
| 322 | #endif |
| 323 | |
| 324 | /* sanity checks.. */ |
Denys Vlasenko | b3b6c8b | 2011-01-20 11:29:00 +0100 | [diff] [blame] | 325 | if (mask_in_addr(*rt)) { |
| 326 | uint32_t mask = mask_in_addr(*rt); |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 327 | |
| 328 | mask = ~ntohl(mask); |
Denys Vlasenko | b3b6c8b | 2011-01-20 11:29:00 +0100 | [diff] [blame] | 329 | if ((rt->rt_flags & RTF_HOST) && mask != 0xffffffff) { |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 330 | bb_error_msg_and_die("netmask %.8x and host route conflict", |
| 331 | (unsigned int) mask); |
| 332 | } |
| 333 | if (mask & (mask + 1)) { |
| 334 | bb_error_msg_and_die("bogus netmask %s", netmask); |
| 335 | } |
Denys Vlasenko | b3b6c8b | 2011-01-20 11:29:00 +0100 | [diff] [blame] | 336 | mask = ((struct sockaddr_in *) &rt->rt_dst)->sin_addr.s_addr; |
| 337 | if (mask & ~(uint32_t)mask_in_addr(*rt)) { |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 338 | bb_error_msg_and_die("netmask and route address conflict"); |
| 339 | } |
| 340 | } |
| 341 | |
| 342 | /* Fill out netmask if still unset */ |
Denys Vlasenko | b3b6c8b | 2011-01-20 11:29:00 +0100 | [diff] [blame] | 343 | if ((action == RTACTION_ADD) && (rt->rt_flags & RTF_HOST)) { |
| 344 | mask_in_addr(*rt) = 0xffffffff; |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 345 | } |
| 346 | |
| 347 | /* Create a socket to the INET kernel. */ |
Rob Landley | d921b2e | 2006-08-03 15:41:12 +0000 | [diff] [blame] | 348 | skfd = xsocket(AF_INET, SOCK_DGRAM, 0); |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 349 | |
Denis Vlasenko | fb79a2e | 2007-07-14 22:07:14 +0000 | [diff] [blame] | 350 | if (action == RTACTION_ADD) |
Denys Vlasenko | b3b6c8b | 2011-01-20 11:29:00 +0100 | [diff] [blame] | 351 | xioctl(skfd, SIOCADDRT, rt); |
Denis Vlasenko | fb79a2e | 2007-07-14 22:07:14 +0000 | [diff] [blame] | 352 | else |
Denys Vlasenko | b3b6c8b | 2011-01-20 11:29:00 +0100 | [diff] [blame] | 353 | xioctl(skfd, SIOCDELRT, rt); |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 354 | |
Rob Landley | 6417564 | 2005-08-22 15:57:50 +0000 | [diff] [blame] | 355 | if (ENABLE_FEATURE_CLEAN_UP) close(skfd); |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 356 | } |
| 357 | |
Denis Vlasenko | 703e202 | 2007-01-22 14:12:08 +0000 | [diff] [blame] | 358 | #if ENABLE_FEATURE_IPV6 |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 359 | |
Denys Vlasenko | adf922e | 2009-10-08 14:35:37 +0200 | [diff] [blame] | 360 | static NOINLINE void INET6_setroute(int action, char **args) |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 361 | { |
| 362 | struct sockaddr_in6 sa6; |
| 363 | struct in6_rtmsg rt; |
| 364 | int prefix_len, skfd; |
| 365 | const char *devname; |
| 366 | |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 367 | /* We know args isn't NULL from the check in route_main. */ |
| 368 | const char *target = *args++; |
| 369 | |
Denys Vlasenko | 0004e99 | 2010-09-01 12:01:17 +0200 | [diff] [blame] | 370 | if (strcmp(target, "default") == 0) { |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 371 | prefix_len = 0; |
| 372 | memset(&sa6, 0, sizeof(sa6)); |
| 373 | } else { |
| 374 | char *cp; |
Denis Vlasenko | 1bec1b9 | 2007-11-06 02:23:39 +0000 | [diff] [blame] | 375 | cp = strchr(target, '/'); /* Yes... const to non is ok. */ |
| 376 | if (cp) { |
| 377 | *cp = '\0'; |
| 378 | prefix_len = xatoul_range(cp + 1, 0, 128); |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 379 | } else { |
| 380 | prefix_len = 128; |
| 381 | } |
| 382 | if (INET6_resolve(target, (struct sockaddr_in6 *) &sa6) < 0) { |
| 383 | bb_error_msg_and_die("resolving %s", target); |
| 384 | } |
| 385 | } |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 386 | |
| 387 | /* Clean out the RTREQ structure. */ |
Denis Vlasenko | 703e202 | 2007-01-22 14:12:08 +0000 | [diff] [blame] | 388 | memset(&rt, 0, sizeof(rt)); |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 389 | |
| 390 | memcpy(&rt.rtmsg_dst, sa6.sin6_addr.s6_addr, sizeof(struct in6_addr)); |
| 391 | |
| 392 | /* Fill in the other fields. */ |
| 393 | rt.rtmsg_dst_len = prefix_len; |
| 394 | rt.rtmsg_flags = ((prefix_len == 128) ? (RTF_UP|RTF_HOST) : RTF_UP); |
| 395 | rt.rtmsg_metric = 1; |
| 396 | |
| 397 | devname = NULL; |
| 398 | |
| 399 | while (*args) { |
| 400 | int k = kw_lookup(tbl_ipvx, &args); |
| 401 | const char *args_m1 = args[-1]; |
| 402 | |
| 403 | if ((k == KW_IPVx_MOD) || (k == KW_IPVx_DYN)) { |
| 404 | rt.rtmsg_flags |= flags_ipvx[k & 3]; |
| 405 | continue; |
| 406 | } |
| 407 | |
| 408 | if (k == KW_IPVx_METRIC) { |
Denis Vlasenko | 1385899 | 2006-10-08 12:49:22 +0000 | [diff] [blame] | 409 | rt.rtmsg_metric = xatoul(args_m1); |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 410 | continue; |
| 411 | } |
| 412 | |
| 413 | if (k == KW_IPVx_GATEWAY) { |
| 414 | if (rt.rtmsg_flags & RTF_GATEWAY) { |
| 415 | bb_show_usage(); |
| 416 | } |
| 417 | |
| 418 | if (INET6_resolve(args_m1, (struct sockaddr_in6 *) &sa6) < 0) { |
| 419 | bb_error_msg_and_die("resolving %s", args_m1); |
| 420 | } |
| 421 | memcpy(&rt.rtmsg_gateway, sa6.sin6_addr.s6_addr, |
Tanguy Pruvot | 823694d | 2012-11-18 13:20:29 +0100 | [diff] [blame] | 422 | sizeof(struct in6_addr)); |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 423 | rt.rtmsg_flags |= RTF_GATEWAY; |
| 424 | continue; |
| 425 | } |
| 426 | |
| 427 | /* Device is special in that it can be the last arg specified |
| 428 | * and doesn't requre the dev/device keyword in that case. */ |
| 429 | if (!devname && ((k == KW_IPVx_DEVICE) || (!k && !*++args))) { |
Manuel Novoa III | 539fa95 | 2004-03-19 23:27:08 +0000 | [diff] [blame] | 430 | /* Don't use args_m1 here since args may have changed! */ |
| 431 | devname = args[-1]; |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 432 | continue; |
| 433 | } |
| 434 | |
| 435 | /* Nothing matched. */ |
| 436 | bb_show_usage(); |
| 437 | } |
| 438 | |
| 439 | /* Create a socket to the INET6 kernel. */ |
Rob Landley | d921b2e | 2006-08-03 15:41:12 +0000 | [diff] [blame] | 440 | skfd = xsocket(AF_INET6, SOCK_DGRAM, 0); |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 441 | |
| 442 | rt.rtmsg_ifindex = 0; |
| 443 | |
| 444 | if (devname) { |
| 445 | struct ifreq ifr; |
| 446 | memset(&ifr, 0, sizeof(ifr)); |
Denis Vlasenko | 360d966 | 2008-12-02 18:18:50 +0000 | [diff] [blame] | 447 | strncpy_IFNAMSIZ(ifr.ifr_name, devname); |
Tanguy Pruvot | 823694d | 2012-11-18 13:20:29 +0100 | [diff] [blame] | 448 | xioctl(skfd, SIOCGIFINDEX, &ifr); |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 449 | rt.rtmsg_ifindex = ifr.ifr_ifindex; |
| 450 | } |
| 451 | |
| 452 | /* Tell the kernel to accept this route. */ |
Denis Vlasenko | fb79a2e | 2007-07-14 22:07:14 +0000 | [diff] [blame] | 453 | if (action == RTACTION_ADD) |
| 454 | xioctl(skfd, SIOCADDRT, &rt); |
| 455 | else |
| 456 | xioctl(skfd, SIOCDELRT, &rt); |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 457 | |
Rob Landley | 6417564 | 2005-08-22 15:57:50 +0000 | [diff] [blame] | 458 | if (ENABLE_FEATURE_CLEAN_UP) close(skfd); |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 459 | } |
| 460 | #endif |
| 461 | |
Denis Vlasenko | 6ca409e | 2007-08-12 20:58:27 +0000 | [diff] [blame] | 462 | static const unsigned flagvals[] = { /* Must agree with flagchars[]. */ |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 463 | RTF_GATEWAY, |
| 464 | RTF_HOST, |
| 465 | RTF_REINSTATE, |
| 466 | RTF_DYNAMIC, |
| 467 | RTF_MODIFIED, |
Denis Vlasenko | 703e202 | 2007-01-22 14:12:08 +0000 | [diff] [blame] | 468 | #if ENABLE_FEATURE_IPV6 |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 469 | RTF_DEFAULT, |
| 470 | RTF_ADDRCONF, |
| 471 | RTF_CACHE |
| 472 | #endif |
| 473 | }; |
| 474 | |
| 475 | #define IPV4_MASK (RTF_GATEWAY|RTF_HOST|RTF_REINSTATE|RTF_DYNAMIC|RTF_MODIFIED) |
| 476 | #define IPV6_MASK (RTF_GATEWAY|RTF_HOST|RTF_DEFAULT|RTF_ADDRCONF|RTF_CACHE) |
| 477 | |
Denis Vlasenko | 6ca409e | 2007-08-12 20:58:27 +0000 | [diff] [blame] | 478 | /* Must agree with flagvals[]. */ |
| 479 | static const char flagchars[] ALIGN1 = |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 480 | "GHRDM" |
Denis Vlasenko | 703e202 | 2007-01-22 14:12:08 +0000 | [diff] [blame] | 481 | #if ENABLE_FEATURE_IPV6 |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 482 | "DAC" |
| 483 | #endif |
| 484 | ; |
| 485 | |
Denis Vlasenko | 98ee06d | 2006-12-31 18:57:37 +0000 | [diff] [blame] | 486 | static void set_flags(char *flagstr, int flags) |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 487 | { |
| 488 | int i; |
| 489 | |
| 490 | *flagstr++ = 'U'; |
| 491 | |
Denis Vlasenko | 98ee06d | 2006-12-31 18:57:37 +0000 | [diff] [blame] | 492 | for (i = 0; (*flagstr = flagchars[i]) != 0; i++) { |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 493 | if (flags & flagvals[i]) { |
| 494 | ++flagstr; |
| 495 | } |
| 496 | } |
| 497 | } |
| 498 | |
Eric Andersen | 14f5c8d | 2005-04-16 19:39:00 +0000 | [diff] [blame] | 499 | /* also used in netstat */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 500 | void FAST_FUNC bb_displayroutes(int noresolve, int netstatfmt) |
Eric Andersen | 68be2ab | 2001-02-14 19:26:39 +0000 | [diff] [blame] | 501 | { |
Denis Vlasenko | 6d9ea24 | 2007-06-19 11:12:46 +0000 | [diff] [blame] | 502 | char devname[64], flags[16], *sdest, *sgw; |
Denis Vlasenko | 8746885 | 2007-04-13 23:22:00 +0000 | [diff] [blame] | 503 | unsigned long d, g, m; |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 504 | int flgs, ref, use, metric, mtu, win, ir; |
| 505 | struct sockaddr_in s_addr; |
| 506 | struct in_addr mask; |
Eric Andersen | 68be2ab | 2001-02-14 19:26:39 +0000 | [diff] [blame] | 507 | |
Denis Vlasenko | 5415c85 | 2008-07-21 23:05:26 +0000 | [diff] [blame] | 508 | FILE *fp = xfopen_for_read("/proc/net/route"); |
Eric Andersen | 68be2ab | 2001-02-14 19:26:39 +0000 | [diff] [blame] | 509 | |
Denis Vlasenko | f0ed376 | 2006-10-26 23:21:47 +0000 | [diff] [blame] | 510 | printf("Kernel IP routing table\n" |
Tanguy Pruvot | 823694d | 2012-11-18 13:20:29 +0100 | [diff] [blame] | 511 | "Destination Gateway Genmask Flags %s Iface\n", |
Denis Vlasenko | 98ee06d | 2006-12-31 18:57:37 +0000 | [diff] [blame] | 512 | netstatfmt ? " MSS Window irtt" : "Metric Ref Use"); |
Eric Andersen | cd8c436 | 2001-11-10 11:22:46 +0000 | [diff] [blame] | 513 | |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 514 | if (fscanf(fp, "%*[^\n]\n") < 0) { /* Skip the first line. */ |
Tanguy Pruvot | 823694d | 2012-11-18 13:20:29 +0100 | [diff] [blame] | 515 | goto ERROR; /* Empty or missing line, or read error. */ |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 516 | } |
| 517 | while (1) { |
| 518 | int r; |
| 519 | r = fscanf(fp, "%63s%lx%lx%X%d%d%d%lx%d%d%d\n", |
Tanguy Pruvot | 823694d | 2012-11-18 13:20:29 +0100 | [diff] [blame] | 520 | devname, &d, &g, &flgs, &ref, &use, &metric, &m, |
| 521 | &mtu, &win, &ir); |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 522 | if (r != 11) { |
| 523 | if ((r < 0) && feof(fp)) { /* EOF with no (nonspace) chars read. */ |
| 524 | break; |
Eric Andersen | 68be2ab | 2001-02-14 19:26:39 +0000 | [diff] [blame] | 525 | } |
Denis Vlasenko | 98ee06d | 2006-12-31 18:57:37 +0000 | [diff] [blame] | 526 | ERROR: |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 527 | bb_error_msg_and_die("fscanf"); |
Glenn L McGrath | 7c58e9b | 2002-08-22 18:24:43 +0000 | [diff] [blame] | 528 | } |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 529 | |
| 530 | if (!(flgs & RTF_UP)) { /* Skip interfaces that are down. */ |
| 531 | continue; |
| 532 | } |
| 533 | |
| 534 | set_flags(flags, (flgs & IPV4_MASK)); |
| 535 | #ifdef RTF_REJECT |
| 536 | if (flgs & RTF_REJECT) { |
| 537 | flags[0] = '!'; |
| 538 | } |
| 539 | #endif |
| 540 | |
| 541 | memset(&s_addr, 0, sizeof(struct sockaddr_in)); |
| 542 | s_addr.sin_family = AF_INET; |
| 543 | s_addr.sin_addr.s_addr = d; |
Denis Vlasenko | 6d9ea24 | 2007-06-19 11:12:46 +0000 | [diff] [blame] | 544 | sdest = INET_rresolve(&s_addr, (noresolve | 0x8000), m); /* 'default' instead of '*' */ |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 545 | s_addr.sin_addr.s_addr = g; |
Denis Vlasenko | 6d9ea24 | 2007-06-19 11:12:46 +0000 | [diff] [blame] | 546 | sgw = INET_rresolve(&s_addr, (noresolve | 0x4000), m); /* Host instead of net */ |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 547 | mask.s_addr = m; |
Denis Vlasenko | 6d9ea24 | 2007-06-19 11:12:46 +0000 | [diff] [blame] | 548 | /* "%15.15s" truncates hostnames, do we really want that? */ |
| 549 | printf("%-15.15s %-15.15s %-16s%-6s", sdest, sgw, inet_ntoa(mask), flags); |
| 550 | free(sdest); |
| 551 | free(sgw); |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 552 | if (netstatfmt) { |
Denis Vlasenko | f0ed376 | 2006-10-26 23:21:47 +0000 | [diff] [blame] | 553 | printf("%5d %-5d %6d %s\n", mtu, win, ir, devname); |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 554 | } else { |
Denis Vlasenko | f0ed376 | 2006-10-26 23:21:47 +0000 | [diff] [blame] | 555 | printf("%-6d %-2d %7d %s\n", metric, ref, use, devname); |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 556 | } |
Glenn L McGrath | 7c58e9b | 2002-08-22 18:24:43 +0000 | [diff] [blame] | 557 | } |
Alexey Fomenko | 708dd4c | 2011-03-02 04:01:24 +0100 | [diff] [blame] | 558 | fclose(fp); |
Eric Andersen | 68be2ab | 2001-02-14 19:26:39 +0000 | [diff] [blame] | 559 | } |
| 560 | |
Denis Vlasenko | 703e202 | 2007-01-22 14:12:08 +0000 | [diff] [blame] | 561 | #if ENABLE_FEATURE_IPV6 |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 562 | |
Denis Vlasenko | 68404f1 | 2008-03-17 09:00:54 +0000 | [diff] [blame] | 563 | static void INET6_displayroutes(void) |
Eric Andersen | 51b8bd6 | 2002-07-03 11:46:38 +0000 | [diff] [blame] | 564 | { |
Denis Vlasenko | 6d9ea24 | 2007-06-19 11:12:46 +0000 | [diff] [blame] | 565 | char addr6[128], *naddr6; |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 566 | /* In addr6x, we store both 40-byte ':'-delimited ipv6 addresses. |
| 567 | * We read the non-delimited strings into the tail of the buffer |
| 568 | * using fscanf and then modify the buffer by shifting forward |
| 569 | * while inserting ':'s and the nul terminator for the first string. |
| 570 | * Hence the strings are at addr6x and addr6x+40. This generates |
| 571 | * _much_ less code than the previous (upstream) approach. */ |
| 572 | char addr6x[80]; |
| 573 | char iface[16], flags[16]; |
Eric Andersen | 51b8bd6 | 2002-07-03 11:46:38 +0000 | [diff] [blame] | 574 | int iflags, metric, refcnt, use, prefix_len, slen; |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 575 | struct sockaddr_in6 snaddr6; |
Eric Andersen | 51b8bd6 | 2002-07-03 11:46:38 +0000 | [diff] [blame] | 576 | |
Denis Vlasenko | 5415c85 | 2008-07-21 23:05:26 +0000 | [diff] [blame] | 577 | FILE *fp = xfopen_for_read("/proc/net/ipv6_route"); |
Eric Andersen | 51b8bd6 | 2002-07-03 11:46:38 +0000 | [diff] [blame] | 578 | |
Denis Vlasenko | f0ed376 | 2006-10-26 23:21:47 +0000 | [diff] [blame] | 579 | printf("Kernel IPv6 routing table\n%-44s%-40s" |
Tanguy Pruvot | 823694d | 2012-11-18 13:20:29 +0100 | [diff] [blame] | 580 | "Flags Metric Ref Use Iface\n", |
| 581 | "Destination", "Next Hop"); |
Glenn L McGrath | 7c58e9b | 2002-08-22 18:24:43 +0000 | [diff] [blame] | 582 | |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 583 | while (1) { |
| 584 | int r; |
| 585 | r = fscanf(fp, "%32s%x%*s%x%32s%x%x%x%x%s\n", |
Denis Vlasenko | a46dd89 | 2008-07-12 09:20:44 +0000 | [diff] [blame] | 586 | addr6x+14, &prefix_len, &slen, addr6x+40+7, |
| 587 | &metric, &use, &refcnt, &iflags, iface); |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 588 | if (r != 9) { |
| 589 | if ((r < 0) && feof(fp)) { /* EOF with no (nonspace) chars read. */ |
| 590 | break; |
| 591 | } |
Denis Vlasenko | 98ee06d | 2006-12-31 18:57:37 +0000 | [diff] [blame] | 592 | ERROR: |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 593 | bb_error_msg_and_die("fscanf"); |
Eric Andersen | 51b8bd6 | 2002-07-03 11:46:38 +0000 | [diff] [blame] | 594 | } |
| 595 | |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 596 | /* Do the addr6x shift-and-insert changes to ':'-delimit addresses. |
| 597 | * For now, always do this to validate the proc route format, even |
| 598 | * if the interface is down. */ |
| 599 | { |
| 600 | int i = 0; |
| 601 | char *p = addr6x+14; |
| 602 | |
| 603 | do { |
| 604 | if (!*p) { |
Denis Vlasenko | 6d9ea24 | 2007-06-19 11:12:46 +0000 | [diff] [blame] | 605 | if (i == 40) { /* nul terminator for 1st address? */ |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 606 | addr6x[39] = 0; /* Fixup... need 0 instead of ':'. */ |
| 607 | ++p; /* Skip and continue. */ |
| 608 | continue; |
| 609 | } |
| 610 | goto ERROR; |
| 611 | } |
| 612 | addr6x[i++] = *p++; |
Denis Vlasenko | 703e202 | 2007-01-22 14:12:08 +0000 | [diff] [blame] | 613 | if (!((i+1) % 5)) { |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 614 | addr6x[i++] = ':'; |
| 615 | } |
| 616 | } while (i < 40+28+7); |
| 617 | } |
| 618 | |
| 619 | if (!(iflags & RTF_UP)) { /* Skip interfaces that are down. */ |
Eric Andersen | 51b8bd6 | 2002-07-03 11:46:38 +0000 | [diff] [blame] | 620 | continue; |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 621 | } |
Eric Andersen | 51b8bd6 | 2002-07-03 11:46:38 +0000 | [diff] [blame] | 622 | |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 623 | set_flags(flags, (iflags & IPV6_MASK)); |
Eric Andersen | 51b8bd6 | 2002-07-03 11:46:38 +0000 | [diff] [blame] | 624 | |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 625 | r = 0; |
Denys Vlasenko | 940c720 | 2011-03-02 04:07:14 +0100 | [diff] [blame] | 626 | while (1) { |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 627 | inet_pton(AF_INET6, addr6x + r, |
| 628 | (struct sockaddr *) &snaddr6.sin6_addr); |
| 629 | snaddr6.sin6_family = AF_INET6; |
Denis Vlasenko | 6d9ea24 | 2007-06-19 11:12:46 +0000 | [diff] [blame] | 630 | naddr6 = INET6_rresolve((struct sockaddr_in6 *) &snaddr6, |
Tanguy Pruvot | 823694d | 2012-11-18 13:20:29 +0100 | [diff] [blame] | 631 | 0x0fff /* Apparently, upstream never resolves. */ |
| 632 | ); |
Eric Andersen | 51b8bd6 | 2002-07-03 11:46:38 +0000 | [diff] [blame] | 633 | |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 634 | if (!r) { /* 1st pass */ |
| 635 | snprintf(addr6, sizeof(addr6), "%s/%d", naddr6, prefix_len); |
| 636 | r += 40; |
Denis Vlasenko | 6d9ea24 | 2007-06-19 11:12:46 +0000 | [diff] [blame] | 637 | free(naddr6); |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 638 | } else { /* 2nd pass */ |
| 639 | /* Print the info. */ |
Denis Vlasenko | f0ed376 | 2006-10-26 23:21:47 +0000 | [diff] [blame] | 640 | printf("%-43s %-39s %-5s %-6d %-2d %7d %-8s\n", |
Denis Vlasenko | 6d9ea24 | 2007-06-19 11:12:46 +0000 | [diff] [blame] | 641 | addr6, naddr6, flags, metric, refcnt, use, iface); |
| 642 | free(naddr6); |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 643 | break; |
| 644 | } |
Denys Vlasenko | 940c720 | 2011-03-02 04:07:14 +0100 | [diff] [blame] | 645 | } |
Eric Andersen | 51b8bd6 | 2002-07-03 11:46:38 +0000 | [diff] [blame] | 646 | } |
Alexey Fomenko | 708dd4c | 2011-03-02 04:01:24 +0100 | [diff] [blame] | 647 | fclose(fp); |
Eric Andersen | 51b8bd6 | 2002-07-03 11:46:38 +0000 | [diff] [blame] | 648 | } |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 649 | |
Eric Andersen | 51b8bd6 | 2002-07-03 11:46:38 +0000 | [diff] [blame] | 650 | #endif |
| 651 | |
Denis Vlasenko | 703e202 | 2007-01-22 14:12:08 +0000 | [diff] [blame] | 652 | #define ROUTE_OPT_A 0x01 |
| 653 | #define ROUTE_OPT_n 0x02 |
| 654 | #define ROUTE_OPT_e 0x04 |
| 655 | #define ROUTE_OPT_INET6 0x08 /* Not an actual option. See below. */ |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 656 | |
| 657 | /* 1st byte is offset to next entry offset. 2nd byte is return value. */ |
Denis Vlasenko | 6ca409e | 2007-08-12 20:58:27 +0000 | [diff] [blame] | 658 | /* 2nd byte matches RTACTION_* code */ |
| 659 | static const char tbl_verb[] ALIGN1 = |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 660 | "\006\001add\0" |
| 661 | "\006\002del\0" |
Tim Riker | c1ef7bd | 2006-01-25 00:08:53 +0000 | [diff] [blame] | 662 | /* "\011\002delete\0" */ |
Denis Vlasenko | 6ca409e | 2007-08-12 20:58:27 +0000 | [diff] [blame] | 663 | "\010\002delete" /* Since it's last, we can save a byte. */ |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 664 | ; |
| 665 | |
Denis Vlasenko | 9b49a5e | 2007-10-11 10:05:36 +0000 | [diff] [blame] | 666 | int route_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
Denis Vlasenko | a60f84e | 2008-07-05 09:18:54 +0000 | [diff] [blame] | 667 | int route_main(int argc UNUSED_PARAM, char **argv) |
Eric Andersen | ec45595 | 2001-02-14 08:11:27 +0000 | [diff] [blame] | 668 | { |
Denis Vlasenko | 67b23e6 | 2006-10-03 21:00:06 +0000 | [diff] [blame] | 669 | unsigned opt; |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 670 | int what; |
| 671 | char *family; |
Denis Vlasenko | f0ed376 | 2006-10-26 23:21:47 +0000 | [diff] [blame] | 672 | char **p; |
Glenn L McGrath | 7c58e9b | 2002-08-22 18:24:43 +0000 | [diff] [blame] | 673 | |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 674 | /* First, remap '-net' and '-host' to avoid getopt problems. */ |
Denis Vlasenko | f0ed376 | 2006-10-26 23:21:47 +0000 | [diff] [blame] | 675 | p = argv; |
| 676 | while (*++p) { |
Denis Vlasenko | 703e202 | 2007-01-22 14:12:08 +0000 | [diff] [blame] | 677 | if (strcmp(*p, "-net") == 0 || strcmp(*p, "-host") == 0) { |
Denis Vlasenko | f0ed376 | 2006-10-26 23:21:47 +0000 | [diff] [blame] | 678 | p[0][0] = '#'; |
Robert Griebl | 820098f | 2002-05-14 23:03:23 +0000 | [diff] [blame] | 679 | } |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 680 | } |
Glenn L McGrath | 7c58e9b | 2002-08-22 18:24:43 +0000 | [diff] [blame] | 681 | |
Denis Vlasenko | fe7cd64 | 2007-08-18 15:32:12 +0000 | [diff] [blame] | 682 | opt = getopt32(argv, "A:ne", &family); |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 683 | |
Denis Vlasenko | 703e202 | 2007-01-22 14:12:08 +0000 | [diff] [blame] | 684 | if ((opt & ROUTE_OPT_A) && strcmp(family, "inet") != 0) { |
| 685 | #if ENABLE_FEATURE_IPV6 |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 686 | if (strcmp(family, "inet6") == 0) { |
| 687 | opt |= ROUTE_OPT_INET6; /* Set flag for ipv6. */ |
| 688 | } else |
| 689 | #endif |
| 690 | bb_show_usage(); |
| 691 | } |
| 692 | |
| 693 | argv += optind; |
| 694 | |
| 695 | /* No more args means display the routing table. */ |
| 696 | if (!*argv) { |
| 697 | int noresolve = (opt & ROUTE_OPT_n) ? 0x0fff : 0; |
Denis Vlasenko | 703e202 | 2007-01-22 14:12:08 +0000 | [diff] [blame] | 698 | #if ENABLE_FEATURE_IPV6 |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 699 | if (opt & ROUTE_OPT_INET6) |
Denis Vlasenko | 68404f1 | 2008-03-17 09:00:54 +0000 | [diff] [blame] | 700 | INET6_displayroutes(); |
Eric Andersen | 51b8bd6 | 2002-07-03 11:46:38 +0000 | [diff] [blame] | 701 | else |
| 702 | #endif |
Denis Vlasenko | 703e202 | 2007-01-22 14:12:08 +0000 | [diff] [blame] | 703 | bb_displayroutes(noresolve, opt & ROUTE_OPT_e); |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 704 | |
Denis Vlasenko | f0ed376 | 2006-10-26 23:21:47 +0000 | [diff] [blame] | 705 | fflush_stdout_and_exit(EXIT_SUCCESS); |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 706 | } |
| 707 | |
| 708 | /* Check verb. At the moment, must be add, del, or delete. */ |
| 709 | what = kw_lookup(tbl_verb, &argv); |
| 710 | if (!what || !*argv) { /* Unknown verb or no more args. */ |
| 711 | bb_show_usage(); |
Eric Andersen | ec45595 | 2001-02-14 08:11:27 +0000 | [diff] [blame] | 712 | } |
| 713 | |
Denis Vlasenko | 703e202 | 2007-01-22 14:12:08 +0000 | [diff] [blame] | 714 | #if ENABLE_FEATURE_IPV6 |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 715 | if (opt & ROUTE_OPT_INET6) |
| 716 | INET6_setroute(what, argv); |
| 717 | else |
Eric Andersen | 51b8bd6 | 2002-07-03 11:46:38 +0000 | [diff] [blame] | 718 | #endif |
Manuel Novoa III | 7d0c519 | 2004-03-10 07:42:38 +0000 | [diff] [blame] | 719 | INET_setroute(what, argv); |
| 720 | |
| 721 | return EXIT_SUCCESS; |
Eric Andersen | ec45595 | 2001-02-14 08:11:27 +0000 | [diff] [blame] | 722 | } |