Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 1 | /* |
| 2 | * iproute.c "ip route". |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation; either version |
| 7 | * 2 of the License, or (at your option) any later version. |
| 8 | * |
| 9 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> |
| 10 | * |
| 11 | * |
| 12 | * Changes: |
| 13 | * |
| 14 | * Rani Assaf <rani@magic.metawire.com> 980929: resolve addresses |
| 15 | * Kunihiro Ishiguro <kunihiro@zebra.org> 001102: rtnh_ifindex was not initialized |
| 16 | */ |
| 17 | |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 18 | #include <sys/socket.h> |
Glenn L McGrath | 275be87 | 2002-12-16 07:37:21 +0000 | [diff] [blame] | 19 | |
| 20 | #include <stdlib.h> |
| 21 | #include <string.h> |
Glenn L McGrath | 4a4c677 | 2003-02-15 11:50:33 +0000 | [diff] [blame] | 22 | #include <fcntl.h> |
| 23 | #include <unistd.h> |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 24 | |
| 25 | #include "rt_names.h" |
| 26 | #include "utils.h" |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 27 | |
Glenn L McGrath | 275be87 | 2002-12-16 07:37:21 +0000 | [diff] [blame] | 28 | #include "libbb.h" |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 29 | |
| 30 | #ifndef RTAX_RTTVAR |
| 31 | #define RTAX_RTTVAR RTAX_HOPS |
| 32 | #endif |
| 33 | |
| 34 | |
| 35 | static struct |
| 36 | { |
| 37 | int tb; |
Glenn L McGrath | 4a4c677 | 2003-02-15 11:50:33 +0000 | [diff] [blame] | 38 | int flushed; |
| 39 | char *flushb; |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 40 | int flushp; |
| 41 | int flushe; |
| 42 | struct rtnl_handle *rth; |
| 43 | int protocol, protocolmask; |
| 44 | int scope, scopemask; |
| 45 | int type, typemask; |
| 46 | int tos, tosmask; |
| 47 | int iif, iifmask; |
| 48 | int oif, oifmask; |
| 49 | int realm, realmmask; |
| 50 | inet_prefix rprefsrc; |
| 51 | inet_prefix rvia; |
| 52 | inet_prefix rdst; |
| 53 | inet_prefix mdst; |
| 54 | inet_prefix rsrc; |
| 55 | inet_prefix msrc; |
| 56 | } filter; |
| 57 | |
Glenn L McGrath | 4a4c677 | 2003-02-15 11:50:33 +0000 | [diff] [blame] | 58 | static int flush_update(void) |
| 59 | { |
| 60 | if (rtnl_send(filter.rth, filter.flushb, filter.flushp) < 0) { |
| 61 | perror("Failed to send flush request\n"); |
| 62 | return -1; |
| 63 | } |
| 64 | filter.flushp = 0; |
| 65 | return 0; |
| 66 | } |
| 67 | |
Glenn L McGrath | c82f232 | 2002-12-02 00:35:23 +0000 | [diff] [blame] | 68 | static int print_route(struct sockaddr_nl *who, struct nlmsghdr *n, void *arg) |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 69 | { |
| 70 | FILE *fp = (FILE*)arg; |
| 71 | struct rtmsg *r = NLMSG_DATA(n); |
| 72 | int len = n->nlmsg_len; |
| 73 | struct rtattr * tb[RTA_MAX+1]; |
| 74 | char abuf[256]; |
Glenn L McGrath | fbf0b8a | 2003-04-26 02:22:19 +0000 | [diff] [blame] | 75 | inet_prefix dst; |
| 76 | inet_prefix src; |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 77 | int host_len = -1; |
| 78 | SPRINT_BUF(b1); |
| 79 | |
| 80 | |
| 81 | if (n->nlmsg_type != RTM_NEWROUTE && n->nlmsg_type != RTM_DELROUTE) { |
| 82 | fprintf(stderr, "Not a route: %08x %08x %08x\n", |
| 83 | n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags); |
| 84 | return 0; |
| 85 | } |
Glenn L McGrath | 4a4c677 | 2003-02-15 11:50:33 +0000 | [diff] [blame] | 86 | if (filter.flushb && n->nlmsg_type != RTM_NEWROUTE) |
| 87 | return 0; |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 88 | len -= NLMSG_LENGTH(sizeof(*r)); |
| 89 | if (len < 0) { |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 90 | bb_error_msg("wrong nlmsg len %d", len); |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 91 | return -1; |
| 92 | } |
| 93 | |
| 94 | if (r->rtm_family == AF_INET6) |
| 95 | host_len = 128; |
| 96 | else if (r->rtm_family == AF_INET) |
| 97 | host_len = 32; |
| 98 | |
| 99 | if (r->rtm_family == AF_INET6) { |
| 100 | if (filter.tb) { |
| 101 | if (filter.tb < 0) { |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 102 | if (!(r->rtm_flags&RTM_F_CLONED)) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 103 | return 0; |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 104 | } |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 105 | } else { |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 106 | if (r->rtm_flags&RTM_F_CLONED) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 107 | return 0; |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 108 | } |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 109 | if (filter.tb == RT_TABLE_LOCAL) { |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 110 | if (r->rtm_type != RTN_LOCAL) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 111 | return 0; |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 112 | } |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 113 | } else if (filter.tb == RT_TABLE_MAIN) { |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 114 | if (r->rtm_type == RTN_LOCAL) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 115 | return 0; |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 116 | } |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 117 | } else { |
| 118 | return 0; |
| 119 | } |
| 120 | } |
| 121 | } |
| 122 | } else { |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 123 | if (filter.tb > 0 && filter.tb != r->rtm_table) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 124 | return 0; |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 125 | } |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 126 | } |
| 127 | if (filter.rdst.family && |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 128 | (r->rtm_family != filter.rdst.family || filter.rdst.bitlen > r->rtm_dst_len)) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 129 | return 0; |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 130 | } |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 131 | if (filter.mdst.family && |
| 132 | (r->rtm_family != filter.mdst.family || |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 133 | (filter.mdst.bitlen >= 0 && filter.mdst.bitlen < r->rtm_dst_len))) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 134 | return 0; |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 135 | } |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 136 | if (filter.rsrc.family && |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 137 | (r->rtm_family != filter.rsrc.family || filter.rsrc.bitlen > r->rtm_src_len)) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 138 | return 0; |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 139 | } |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 140 | if (filter.msrc.family && |
| 141 | (r->rtm_family != filter.msrc.family || |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 142 | (filter.msrc.bitlen >= 0 && filter.msrc.bitlen < r->rtm_src_len))) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 143 | return 0; |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 144 | } |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 145 | |
| 146 | memset(tb, 0, sizeof(tb)); |
| 147 | parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len); |
| 148 | |
Glenn L McGrath | fbf0b8a | 2003-04-26 02:22:19 +0000 | [diff] [blame] | 149 | if (filter.rdst.family && inet_addr_match(&dst, &filter.rdst, filter.rdst.bitlen)) |
| 150 | return 0; |
| 151 | if (filter.mdst.family && filter.mdst.bitlen >= 0 && |
| 152 | inet_addr_match(&dst, &filter.mdst, r->rtm_dst_len)) |
| 153 | return 0; |
| 154 | |
| 155 | if (filter.rsrc.family && inet_addr_match(&src, &filter.rsrc, filter.rsrc.bitlen)) |
| 156 | return 0; |
| 157 | if (filter.msrc.family && filter.msrc.bitlen >= 0 && |
| 158 | inet_addr_match(&src, &filter.msrc, r->rtm_src_len)) |
| 159 | return 0; |
| 160 | |
Glenn L McGrath | 4a4c677 | 2003-02-15 11:50:33 +0000 | [diff] [blame] | 161 | if (filter.flushb && |
| 162 | r->rtm_family == AF_INET6 && |
| 163 | r->rtm_dst_len == 0 && |
| 164 | r->rtm_type == RTN_UNREACHABLE && |
| 165 | tb[RTA_PRIORITY] && |
| 166 | *(int*)RTA_DATA(tb[RTA_PRIORITY]) == -1) |
| 167 | return 0; |
| 168 | |
| 169 | if (filter.flushb) { |
| 170 | struct nlmsghdr *fn; |
| 171 | if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) { |
| 172 | if (flush_update()) |
| 173 | return -1; |
| 174 | } |
| 175 | fn = (struct nlmsghdr*)(filter.flushb + NLMSG_ALIGN(filter.flushp)); |
| 176 | memcpy(fn, n, n->nlmsg_len); |
| 177 | fn->nlmsg_type = RTM_DELROUTE; |
| 178 | fn->nlmsg_flags = NLM_F_REQUEST; |
| 179 | fn->nlmsg_seq = ++filter.rth->seq; |
| 180 | filter.flushp = (((char*)fn) + n->nlmsg_len) - filter.flushb; |
| 181 | filter.flushed++; |
| 182 | return 0; |
| 183 | } |
| 184 | |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 185 | if (n->nlmsg_type == RTM_DELROUTE) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 186 | fprintf(fp, "Deleted "); |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 187 | } |
| 188 | if (r->rtm_type != RTN_UNICAST && !filter.type) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 189 | fprintf(fp, "%s ", rtnl_rtntype_n2a(r->rtm_type, b1, sizeof(b1))); |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 190 | } |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 191 | |
| 192 | if (tb[RTA_DST]) { |
| 193 | if (r->rtm_dst_len != host_len) { |
| 194 | fprintf(fp, "%s/%u ", rt_addr_n2a(r->rtm_family, |
| 195 | RTA_PAYLOAD(tb[RTA_DST]), |
| 196 | RTA_DATA(tb[RTA_DST]), |
| 197 | abuf, sizeof(abuf)), |
| 198 | r->rtm_dst_len |
| 199 | ); |
| 200 | } else { |
| 201 | fprintf(fp, "%s ", format_host(r->rtm_family, |
| 202 | RTA_PAYLOAD(tb[RTA_DST]), |
| 203 | RTA_DATA(tb[RTA_DST]), |
| 204 | abuf, sizeof(abuf)) |
| 205 | ); |
| 206 | } |
| 207 | } else if (r->rtm_dst_len) { |
| 208 | fprintf(fp, "0/%d ", r->rtm_dst_len); |
| 209 | } else { |
| 210 | fprintf(fp, "default "); |
| 211 | } |
| 212 | if (tb[RTA_SRC]) { |
| 213 | if (r->rtm_src_len != host_len) { |
| 214 | fprintf(fp, "from %s/%u ", rt_addr_n2a(r->rtm_family, |
| 215 | RTA_PAYLOAD(tb[RTA_SRC]), |
| 216 | RTA_DATA(tb[RTA_SRC]), |
| 217 | abuf, sizeof(abuf)), |
| 218 | r->rtm_src_len |
| 219 | ); |
| 220 | } else { |
| 221 | fprintf(fp, "from %s ", format_host(r->rtm_family, |
| 222 | RTA_PAYLOAD(tb[RTA_SRC]), |
| 223 | RTA_DATA(tb[RTA_SRC]), |
| 224 | abuf, sizeof(abuf)) |
| 225 | ); |
| 226 | } |
| 227 | } else if (r->rtm_src_len) { |
| 228 | fprintf(fp, "from 0/%u ", r->rtm_src_len); |
| 229 | } |
| 230 | if (tb[RTA_GATEWAY] && filter.rvia.bitlen != host_len) { |
| 231 | fprintf(fp, "via %s ", |
| 232 | format_host(r->rtm_family, |
| 233 | RTA_PAYLOAD(tb[RTA_GATEWAY]), |
| 234 | RTA_DATA(tb[RTA_GATEWAY]), |
| 235 | abuf, sizeof(abuf))); |
| 236 | } |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 237 | if (tb[RTA_OIF] && filter.oifmask != -1) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 238 | fprintf(fp, "dev %s ", ll_index_to_name(*(int*)RTA_DATA(tb[RTA_OIF]))); |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 239 | } |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 240 | |
| 241 | if (tb[RTA_PREFSRC] && filter.rprefsrc.bitlen != host_len) { |
| 242 | /* Do not use format_host(). It is our local addr |
| 243 | and symbolic name will not be useful. |
| 244 | */ |
| 245 | fprintf(fp, " src %s ", |
| 246 | rt_addr_n2a(r->rtm_family, |
| 247 | RTA_PAYLOAD(tb[RTA_PREFSRC]), |
| 248 | RTA_DATA(tb[RTA_PREFSRC]), |
| 249 | abuf, sizeof(abuf))); |
| 250 | } |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 251 | if (tb[RTA_PRIORITY]) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 252 | fprintf(fp, " metric %d ", *(__u32*)RTA_DATA(tb[RTA_PRIORITY])); |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 253 | } |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 254 | if (r->rtm_family == AF_INET6) { |
| 255 | struct rta_cacheinfo *ci = NULL; |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 256 | if (tb[RTA_CACHEINFO]) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 257 | ci = RTA_DATA(tb[RTA_CACHEINFO]); |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 258 | } |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 259 | if ((r->rtm_flags & RTM_F_CLONED) || (ci && ci->rta_expires)) { |
| 260 | static int hz; |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 261 | if (!hz) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 262 | hz = get_hz(); |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 263 | } |
| 264 | if (r->rtm_flags & RTM_F_CLONED) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 265 | fprintf(fp, "%s cache ", _SL_); |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 266 | } |
| 267 | if (ci->rta_expires) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 268 | fprintf(fp, " expires %dsec", ci->rta_expires/hz); |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 269 | } |
| 270 | if (ci->rta_error != 0) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 271 | fprintf(fp, " error %d", ci->rta_error); |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 272 | } |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 273 | } else if (ci) { |
| 274 | if (ci->rta_error != 0) |
| 275 | fprintf(fp, " error %d", ci->rta_error); |
| 276 | } |
| 277 | } |
| 278 | if (tb[RTA_IIF] && filter.iifmask != -1) { |
| 279 | fprintf(fp, " iif %s", ll_index_to_name(*(int*)RTA_DATA(tb[RTA_IIF]))); |
| 280 | } |
| 281 | fprintf(fp, "\n"); |
| 282 | fflush(fp); |
| 283 | return 0; |
| 284 | } |
| 285 | |
Glenn L McGrath | c82f232 | 2002-12-02 00:35:23 +0000 | [diff] [blame] | 286 | static int iproute_modify(int cmd, unsigned flags, int argc, char **argv) |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 287 | { |
| 288 | struct rtnl_handle rth; |
| 289 | struct { |
| 290 | struct nlmsghdr n; |
| 291 | struct rtmsg r; |
| 292 | char buf[1024]; |
| 293 | } req; |
| 294 | char mxbuf[256]; |
| 295 | struct rtattr * mxrta = (void*)mxbuf; |
| 296 | unsigned mxlock = 0; |
| 297 | char *d = NULL; |
| 298 | int gw_ok = 0; |
| 299 | int dst_ok = 0; |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 300 | int proto_ok = 0; |
| 301 | int type_ok = 0; |
| 302 | |
| 303 | memset(&req, 0, sizeof(req)); |
| 304 | |
| 305 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg)); |
| 306 | req.n.nlmsg_flags = NLM_F_REQUEST|flags; |
| 307 | req.n.nlmsg_type = cmd; |
| 308 | req.r.rtm_family = preferred_family; |
| 309 | req.r.rtm_table = RT_TABLE_MAIN; |
| 310 | req.r.rtm_scope = RT_SCOPE_NOWHERE; |
| 311 | |
| 312 | if (cmd != RTM_DELROUTE) { |
| 313 | req.r.rtm_protocol = RTPROT_BOOT; |
| 314 | req.r.rtm_scope = RT_SCOPE_UNIVERSE; |
| 315 | req.r.rtm_type = RTN_UNICAST; |
| 316 | } |
| 317 | |
| 318 | mxrta->rta_type = RTA_METRICS; |
| 319 | mxrta->rta_len = RTA_LENGTH(0); |
| 320 | |
| 321 | while (argc > 0) { |
| 322 | if (strcmp(*argv, "src") == 0) { |
| 323 | inet_prefix addr; |
| 324 | NEXT_ARG(); |
| 325 | get_addr(&addr, *argv, req.r.rtm_family); |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 326 | if (req.r.rtm_family == AF_UNSPEC) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 327 | req.r.rtm_family = addr.family; |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 328 | } |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 329 | addattr_l(&req.n, sizeof(req), RTA_PREFSRC, &addr.data, addr.bytelen); |
| 330 | } else if (strcmp(*argv, "via") == 0) { |
| 331 | inet_prefix addr; |
| 332 | gw_ok = 1; |
| 333 | NEXT_ARG(); |
| 334 | get_addr(&addr, *argv, req.r.rtm_family); |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 335 | if (req.r.rtm_family == AF_UNSPEC) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 336 | req.r.rtm_family = addr.family; |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 337 | } |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 338 | addattr_l(&req.n, sizeof(req), RTA_GATEWAY, &addr.data, addr.bytelen); |
| 339 | } else if (strcmp(*argv, "mtu") == 0) { |
| 340 | unsigned mtu; |
| 341 | NEXT_ARG(); |
| 342 | if (strcmp(*argv, "lock") == 0) { |
| 343 | mxlock |= (1<<RTAX_MTU); |
| 344 | NEXT_ARG(); |
| 345 | } |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 346 | if (get_unsigned(&mtu, *argv, 0)) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 347 | invarg("\"mtu\" value is invalid\n", *argv); |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 348 | } |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 349 | rta_addattr32(mxrta, sizeof(mxbuf), RTAX_MTU, mtu); |
| 350 | } else if (matches(*argv, "protocol") == 0) { |
| 351 | int prot; |
| 352 | NEXT_ARG(); |
| 353 | if (rtnl_rtprot_a2n(&prot, *argv)) |
| 354 | invarg("\"protocol\" value is invalid\n", *argv); |
| 355 | req.r.rtm_protocol = prot; |
| 356 | proto_ok =1; |
| 357 | } else if (strcmp(*argv, "dev") == 0 || |
| 358 | strcmp(*argv, "oif") == 0) { |
| 359 | NEXT_ARG(); |
| 360 | d = *argv; |
| 361 | } else { |
| 362 | int type; |
| 363 | inet_prefix dst; |
| 364 | |
| 365 | if (strcmp(*argv, "to") == 0) { |
| 366 | NEXT_ARG(); |
| 367 | } |
| 368 | if ((**argv < '0' || **argv > '9') && |
| 369 | rtnl_rtntype_a2n(&type, *argv) == 0) { |
| 370 | NEXT_ARG(); |
| 371 | req.r.rtm_type = type; |
| 372 | type_ok = 1; |
| 373 | } |
| 374 | |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 375 | if (dst_ok) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 376 | duparg2("to", *argv); |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 377 | } |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 378 | get_prefix(&dst, *argv, req.r.rtm_family); |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 379 | if (req.r.rtm_family == AF_UNSPEC) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 380 | req.r.rtm_family = dst.family; |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 381 | } |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 382 | req.r.rtm_dst_len = dst.bitlen; |
| 383 | dst_ok = 1; |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 384 | if (dst.bytelen) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 385 | addattr_l(&req.n, sizeof(req), RTA_DST, &dst.data, dst.bytelen); |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 386 | } |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 387 | } |
| 388 | argc--; argv++; |
| 389 | } |
| 390 | |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 391 | if (rtnl_open(&rth, 0) < 0) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 392 | exit(1); |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 393 | } |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 394 | |
Eric Andersen | 5780adb | 2002-11-15 09:12:47 +0000 | [diff] [blame] | 395 | if (d) { |
| 396 | int idx; |
| 397 | |
| 398 | ll_init_map(&rth); |
| 399 | |
| 400 | if (d) { |
| 401 | if ((idx = ll_name_to_index(d)) == 0) { |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 402 | bb_error_msg("Cannot find device \"%s\"", d); |
Eric Andersen | 5780adb | 2002-11-15 09:12:47 +0000 | [diff] [blame] | 403 | return -1; |
| 404 | } |
| 405 | addattr32(&req.n, sizeof(req), RTA_OIF, idx); |
| 406 | } |
| 407 | } |
| 408 | |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 409 | if (mxrta->rta_len > RTA_LENGTH(0)) { |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 410 | if (mxlock) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 411 | rta_addattr32(mxrta, sizeof(mxbuf), RTAX_LOCK, mxlock); |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 412 | } |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 413 | addattr_l(&req.n, sizeof(req), RTA_METRICS, RTA_DATA(mxrta), RTA_PAYLOAD(mxrta)); |
| 414 | } |
| 415 | |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 416 | if (req.r.rtm_family == AF_UNSPEC) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 417 | req.r.rtm_family = AF_INET; |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 418 | } |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 419 | |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 420 | if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 421 | exit(2); |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 422 | } |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 423 | |
| 424 | return 0; |
| 425 | } |
| 426 | |
| 427 | static int rtnl_rtcache_request(struct rtnl_handle *rth, int family) |
| 428 | { |
| 429 | struct { |
| 430 | struct nlmsghdr nlh; |
| 431 | struct rtmsg rtm; |
| 432 | } req; |
| 433 | struct sockaddr_nl nladdr; |
| 434 | |
| 435 | memset(&nladdr, 0, sizeof(nladdr)); |
| 436 | memset(&req, 0, sizeof(req)); |
| 437 | nladdr.nl_family = AF_NETLINK; |
| 438 | |
| 439 | req.nlh.nlmsg_len = sizeof(req); |
| 440 | req.nlh.nlmsg_type = RTM_GETROUTE; |
| 441 | req.nlh.nlmsg_flags = NLM_F_ROOT|NLM_F_REQUEST; |
| 442 | req.nlh.nlmsg_pid = 0; |
| 443 | req.nlh.nlmsg_seq = rth->dump = ++rth->seq; |
| 444 | req.rtm.rtm_family = family; |
| 445 | req.rtm.rtm_flags |= RTM_F_CLONED; |
| 446 | |
| 447 | return sendto(rth->fd, (void*)&req, sizeof(req), 0, (struct sockaddr*)&nladdr, sizeof(nladdr)); |
| 448 | } |
| 449 | |
Glenn L McGrath | 4a4c677 | 2003-02-15 11:50:33 +0000 | [diff] [blame] | 450 | static int iproute_flush_cache(void) |
| 451 | { |
| 452 | #define ROUTE_FLUSH_PATH "/proc/sys/net/ipv4/route/flush" |
| 453 | |
| 454 | int len; |
| 455 | int flush_fd = open (ROUTE_FLUSH_PATH, O_WRONLY); |
| 456 | char *buffer = "-1"; |
| 457 | |
| 458 | if (flush_fd < 0) { |
| 459 | fprintf (stderr, "Cannot open \"%s\"\n", ROUTE_FLUSH_PATH); |
| 460 | return -1; |
| 461 | } |
| 462 | |
| 463 | len = strlen (buffer); |
| 464 | |
| 465 | if ((write (flush_fd, (void *)buffer, len)) < len) { |
| 466 | fprintf (stderr, "Cannot flush routing cache\n"); |
| 467 | return -1; |
| 468 | } |
| 469 | close(flush_fd); |
| 470 | return 0; |
| 471 | } |
| 472 | |
Glenn L McGrath | c82f232 | 2002-12-02 00:35:23 +0000 | [diff] [blame] | 473 | static void iproute_reset_filter(void) |
| 474 | { |
| 475 | memset(&filter, 0, sizeof(filter)); |
| 476 | filter.mdst.bitlen = -1; |
| 477 | filter.msrc.bitlen = -1; |
| 478 | } |
| 479 | |
Glenn L McGrath | 4a4c677 | 2003-02-15 11:50:33 +0000 | [diff] [blame] | 480 | static int iproute_list_or_flush(int argc, char **argv, int flush) |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 481 | { |
| 482 | int do_ipv6 = preferred_family; |
| 483 | struct rtnl_handle rth; |
| 484 | char *id = NULL; |
| 485 | char *od = NULL; |
| 486 | |
| 487 | iproute_reset_filter(); |
| 488 | filter.tb = RT_TABLE_MAIN; |
| 489 | |
Glenn L McGrath | 4a4c677 | 2003-02-15 11:50:33 +0000 | [diff] [blame] | 490 | if (flush && argc <= 0) { |
| 491 | fprintf(stderr, "\"ip route flush\" requires arguments.\n"); |
| 492 | return -1; |
| 493 | } |
| 494 | |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 495 | while (argc > 0) { |
| 496 | if (matches(*argv, "protocol") == 0) { |
| 497 | int prot = 0; |
| 498 | NEXT_ARG(); |
| 499 | filter.protocolmask = -1; |
| 500 | if (rtnl_rtprot_a2n(&prot, *argv)) { |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 501 | if (strcmp(*argv, "all") != 0) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 502 | invarg("invalid \"protocol\"\n", *argv); |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 503 | } |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 504 | prot = 0; |
| 505 | filter.protocolmask = 0; |
| 506 | } |
| 507 | filter.protocol = prot; |
| 508 | } else if (strcmp(*argv, "dev") == 0 || |
| 509 | strcmp(*argv, "oif") == 0) { |
| 510 | NEXT_ARG(); |
| 511 | od = *argv; |
| 512 | } else if (strcmp(*argv, "iif") == 0) { |
| 513 | NEXT_ARG(); |
| 514 | id = *argv; |
| 515 | } else if (matches(*argv, "from") == 0) { |
| 516 | NEXT_ARG(); |
| 517 | if (matches(*argv, "root") == 0) { |
| 518 | NEXT_ARG(); |
| 519 | get_prefix(&filter.rsrc, *argv, do_ipv6); |
| 520 | } else if (matches(*argv, "match") == 0) { |
| 521 | NEXT_ARG(); |
| 522 | get_prefix(&filter.msrc, *argv, do_ipv6); |
| 523 | } else { |
| 524 | if (matches(*argv, "exact") == 0) { |
| 525 | NEXT_ARG(); |
| 526 | } |
| 527 | get_prefix(&filter.msrc, *argv, do_ipv6); |
| 528 | filter.rsrc = filter.msrc; |
| 529 | } |
| 530 | } else { |
| 531 | if (matches(*argv, "to") == 0) { |
| 532 | NEXT_ARG(); |
| 533 | } |
| 534 | if (matches(*argv, "root") == 0) { |
| 535 | NEXT_ARG(); |
| 536 | get_prefix(&filter.rdst, *argv, do_ipv6); |
| 537 | } else if (matches(*argv, "match") == 0) { |
| 538 | NEXT_ARG(); |
| 539 | get_prefix(&filter.mdst, *argv, do_ipv6); |
| 540 | } else { |
| 541 | if (matches(*argv, "exact") == 0) { |
| 542 | NEXT_ARG(); |
| 543 | } |
| 544 | get_prefix(&filter.mdst, *argv, do_ipv6); |
| 545 | filter.rdst = filter.mdst; |
| 546 | } |
| 547 | } |
| 548 | argc--; argv++; |
| 549 | } |
| 550 | |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 551 | if (do_ipv6 == AF_UNSPEC && filter.tb) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 552 | do_ipv6 = AF_INET; |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 553 | } |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 554 | |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 555 | if (rtnl_open(&rth, 0) < 0) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 556 | exit(1); |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 557 | } |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 558 | |
| 559 | ll_init_map(&rth); |
| 560 | |
| 561 | if (id || od) { |
| 562 | int idx; |
| 563 | |
| 564 | if (id) { |
| 565 | if ((idx = ll_name_to_index(id)) == 0) { |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 566 | bb_error_msg("Cannot find device \"%s\"", id); |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 567 | return -1; |
| 568 | } |
| 569 | filter.iif = idx; |
| 570 | filter.iifmask = -1; |
| 571 | } |
| 572 | if (od) { |
| 573 | if ((idx = ll_name_to_index(od)) == 0) { |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 574 | bb_error_msg("Cannot find device \"%s\"", od); |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 575 | } |
| 576 | filter.oif = idx; |
| 577 | filter.oifmask = -1; |
| 578 | } |
| 579 | } |
| 580 | |
Glenn L McGrath | 4a4c677 | 2003-02-15 11:50:33 +0000 | [diff] [blame] | 581 | if (flush) { |
| 582 | int round = 0; |
| 583 | char flushb[4096-512]; |
| 584 | |
| 585 | if (filter.tb == -1) { |
| 586 | if (do_ipv6 != AF_INET6) |
| 587 | iproute_flush_cache(); |
| 588 | if (do_ipv6 == AF_INET) |
| 589 | return 0; |
| 590 | } |
| 591 | |
| 592 | filter.flushb = flushb; |
| 593 | filter.flushp = 0; |
| 594 | filter.flushe = sizeof(flushb); |
| 595 | filter.rth = &rth; |
| 596 | |
| 597 | for (;;) { |
| 598 | if (rtnl_wilddump_request(&rth, do_ipv6, RTM_GETROUTE) < 0) { |
| 599 | perror("Cannot send dump request"); |
| 600 | return -1; |
| 601 | } |
| 602 | filter.flushed = 0; |
| 603 | if (rtnl_dump_filter(&rth, print_route, stdout, NULL, NULL) < 0) { |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 604 | bb_error_msg("Flush terminated\n"); |
Glenn L McGrath | 4a4c677 | 2003-02-15 11:50:33 +0000 | [diff] [blame] | 605 | return -1; |
| 606 | } |
| 607 | if (filter.flushed == 0) { |
| 608 | if (round == 0) { |
| 609 | if (filter.tb != -1 || do_ipv6 == AF_INET6) |
| 610 | fprintf(stderr, "Nothing to flush.\n"); |
| 611 | } |
| 612 | fflush(stdout); |
| 613 | return 0; |
| 614 | } |
| 615 | round++; |
| 616 | if (flush_update() < 0) |
| 617 | exit(1); |
| 618 | } |
| 619 | } |
| 620 | |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 621 | if (filter.tb != -1) { |
| 622 | if (rtnl_wilddump_request(&rth, do_ipv6, RTM_GETROUTE) < 0) { |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 623 | bb_perror_msg_and_die("Cannot send dump request"); |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 624 | } |
| 625 | } else { |
| 626 | if (rtnl_rtcache_request(&rth, do_ipv6) < 0) { |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 627 | bb_perror_msg_and_die("Cannot send dump request"); |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 628 | } |
| 629 | } |
| 630 | |
| 631 | if (rtnl_dump_filter(&rth, print_route, stdout, NULL, NULL) < 0) { |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 632 | bb_error_msg_and_die("Dump terminated"); |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 633 | } |
| 634 | |
| 635 | exit(0); |
| 636 | } |
| 637 | |
| 638 | |
Glenn L McGrath | c82f232 | 2002-12-02 00:35:23 +0000 | [diff] [blame] | 639 | static int iproute_get(int argc, char **argv) |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 640 | { |
| 641 | struct rtnl_handle rth; |
| 642 | struct { |
| 643 | struct nlmsghdr n; |
| 644 | struct rtmsg r; |
| 645 | char buf[1024]; |
| 646 | } req; |
| 647 | char *idev = NULL; |
| 648 | char *odev = NULL; |
| 649 | int connected = 0; |
| 650 | int from_ok = 0; |
Glenn L McGrath | 18eae00 | 2002-12-02 00:54:10 +0000 | [diff] [blame] | 651 | const char *options[] = { "from", "iif", "oif", "dev", "notify", "connected", "to", 0 }; |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 652 | |
| 653 | memset(&req, 0, sizeof(req)); |
| 654 | |
| 655 | iproute_reset_filter(); |
| 656 | |
| 657 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg)); |
| 658 | req.n.nlmsg_flags = NLM_F_REQUEST; |
| 659 | req.n.nlmsg_type = RTM_GETROUTE; |
| 660 | req.r.rtm_family = preferred_family; |
| 661 | req.r.rtm_table = 0; |
| 662 | req.r.rtm_protocol = 0; |
| 663 | req.r.rtm_scope = 0; |
| 664 | req.r.rtm_type = 0; |
| 665 | req.r.rtm_src_len = 0; |
| 666 | req.r.rtm_dst_len = 0; |
| 667 | req.r.rtm_tos = 0; |
| 668 | |
| 669 | while (argc > 0) { |
Glenn L McGrath | 18eae00 | 2002-12-02 00:54:10 +0000 | [diff] [blame] | 670 | switch (compare_string_array(options, *argv)) { |
| 671 | case 0: /* from */ |
| 672 | { |
| 673 | inet_prefix addr; |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 674 | NEXT_ARG(); |
Glenn L McGrath | 18eae00 | 2002-12-02 00:54:10 +0000 | [diff] [blame] | 675 | from_ok = 1; |
| 676 | get_prefix(&addr, *argv, req.r.rtm_family); |
| 677 | if (req.r.rtm_family == AF_UNSPEC) { |
| 678 | req.r.rtm_family = addr.family; |
| 679 | } |
| 680 | if (addr.bytelen) { |
| 681 | addattr_l(&req.n, sizeof(req), RTA_SRC, &addr.data, addr.bytelen); |
| 682 | } |
| 683 | req.r.rtm_src_len = addr.bitlen; |
| 684 | break; |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 685 | } |
Glenn L McGrath | 18eae00 | 2002-12-02 00:54:10 +0000 | [diff] [blame] | 686 | case 1: /* iif */ |
| 687 | NEXT_ARG(); |
| 688 | idev = *argv; |
| 689 | break; |
| 690 | case 2: /* oif */ |
| 691 | case 3: /* dev */ |
| 692 | NEXT_ARG(); |
| 693 | odev = *argv; |
| 694 | break; |
| 695 | case 4: /* notify */ |
| 696 | req.r.rtm_flags |= RTM_F_NOTIFY; |
| 697 | break; |
| 698 | case 5: /* connected */ |
| 699 | connected = 1; |
| 700 | break; |
| 701 | case 6: /* to */ |
| 702 | NEXT_ARG(); |
| 703 | default: |
| 704 | { |
| 705 | inet_prefix addr; |
| 706 | get_prefix(&addr, *argv, req.r.rtm_family); |
| 707 | if (req.r.rtm_family == AF_UNSPEC) { |
| 708 | req.r.rtm_family = addr.family; |
| 709 | } |
| 710 | if (addr.bytelen) { |
| 711 | addattr_l(&req.n, sizeof(req), RTA_DST, &addr.data, addr.bytelen); |
| 712 | } |
| 713 | req.r.rtm_dst_len = addr.bitlen; |
| 714 | } |
| 715 | argc--; argv++; |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 716 | } |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 717 | } |
| 718 | |
| 719 | if (req.r.rtm_dst_len == 0) { |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 720 | bb_error_msg_and_die("need at least destination address"); |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 721 | } |
| 722 | |
| 723 | if (rtnl_open(&rth, 0) < 0) |
| 724 | exit(1); |
| 725 | |
| 726 | ll_init_map(&rth); |
| 727 | |
| 728 | if (idev || odev) { |
| 729 | int idx; |
| 730 | |
| 731 | if (idev) { |
| 732 | if ((idx = ll_name_to_index(idev)) == 0) { |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 733 | bb_error_msg("Cannot find device \"%s\"", idev); |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 734 | return -1; |
| 735 | } |
| 736 | addattr32(&req.n, sizeof(req), RTA_IIF, idx); |
| 737 | } |
| 738 | if (odev) { |
| 739 | if ((idx = ll_name_to_index(odev)) == 0) { |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 740 | bb_error_msg("Cannot find device \"%s\"", odev); |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 741 | return -1; |
| 742 | } |
| 743 | addattr32(&req.n, sizeof(req), RTA_OIF, idx); |
| 744 | } |
| 745 | } |
| 746 | |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 747 | if (req.r.rtm_family == AF_UNSPEC) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 748 | req.r.rtm_family = AF_INET; |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 749 | } |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 750 | |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 751 | if (rtnl_talk(&rth, &req.n, 0, 0, &req.n, NULL, NULL) < 0) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 752 | exit(2); |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 753 | } |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 754 | |
| 755 | if (connected && !from_ok) { |
| 756 | struct rtmsg *r = NLMSG_DATA(&req.n); |
| 757 | int len = req.n.nlmsg_len; |
| 758 | struct rtattr * tb[RTA_MAX+1]; |
| 759 | |
| 760 | if (print_route(NULL, &req.n, (void*)stdout) < 0) { |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 761 | bb_error_msg_and_die("An error :-)"); |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 762 | } |
| 763 | |
| 764 | if (req.n.nlmsg_type != RTM_NEWROUTE) { |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 765 | bb_error_msg("Not a route?"); |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 766 | return -1; |
| 767 | } |
| 768 | len -= NLMSG_LENGTH(sizeof(*r)); |
| 769 | if (len < 0) { |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 770 | bb_error_msg("Wrong len %d", len); |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 771 | return -1; |
| 772 | } |
| 773 | |
| 774 | memset(tb, 0, sizeof(tb)); |
| 775 | parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len); |
| 776 | |
| 777 | if (tb[RTA_PREFSRC]) { |
| 778 | tb[RTA_PREFSRC]->rta_type = RTA_SRC; |
| 779 | r->rtm_src_len = 8*RTA_PAYLOAD(tb[RTA_PREFSRC]); |
| 780 | } else if (!tb[RTA_SRC]) { |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 781 | bb_error_msg("Failed to connect the route"); |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 782 | return -1; |
| 783 | } |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 784 | if (!odev && tb[RTA_OIF]) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 785 | tb[RTA_OIF]->rta_type = 0; |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 786 | } |
| 787 | if (tb[RTA_GATEWAY]) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 788 | tb[RTA_GATEWAY]->rta_type = 0; |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 789 | } |
| 790 | if (!idev && tb[RTA_IIF]) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 791 | tb[RTA_IIF]->rta_type = 0; |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 792 | } |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 793 | req.n.nlmsg_flags = NLM_F_REQUEST; |
| 794 | req.n.nlmsg_type = RTM_GETROUTE; |
| 795 | |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 796 | if (rtnl_talk(&rth, &req.n, 0, 0, &req.n, NULL, NULL) < 0) { |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 797 | exit(2); |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 798 | } |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 799 | } |
| 800 | |
| 801 | if (print_route(NULL, &req.n, (void*)stdout) < 0) { |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 802 | bb_error_msg_and_die("An error :-)"); |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 803 | } |
| 804 | |
| 805 | exit(0); |
| 806 | } |
| 807 | |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 808 | int do_iproute(int argc, char **argv) |
| 809 | { |
Glenn L McGrath | c82f232 | 2002-12-02 00:35:23 +0000 | [diff] [blame] | 810 | const char *ip_route_commands[] = { "add", "append", "change", "chg", |
Eric Andersen | 1a773a6 | 2003-12-19 10:47:40 +0000 | [diff] [blame^] | 811 | "delete", "del", "get", "list", "show", "prepend", "replace", "test", "flush", 0 }; |
Glenn L McGrath | c82f232 | 2002-12-02 00:35:23 +0000 | [diff] [blame] | 812 | unsigned short command_num = 6; |
| 813 | unsigned int flags = 0; |
| 814 | int cmd = RTM_NEWROUTE; |
| 815 | |
| 816 | if (*argv) { |
| 817 | command_num = compare_string_array(ip_route_commands, *argv); |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 818 | } |
Glenn L McGrath | c82f232 | 2002-12-02 00:35:23 +0000 | [diff] [blame] | 819 | switch(command_num) { |
| 820 | case 0: /* add*/ |
| 821 | flags = NLM_F_CREATE|NLM_F_EXCL; |
| 822 | break; |
| 823 | case 1: /* append */ |
| 824 | flags = NLM_F_CREATE|NLM_F_APPEND; |
| 825 | break; |
| 826 | case 2: /* change */ |
| 827 | case 3: /* chg */ |
| 828 | flags = NLM_F_REPLACE; |
| 829 | break; |
| 830 | case 4: /* delete */ |
Eric Andersen | 1a773a6 | 2003-12-19 10:47:40 +0000 | [diff] [blame^] | 831 | case 5: /* del */ |
Glenn L McGrath | c82f232 | 2002-12-02 00:35:23 +0000 | [diff] [blame] | 832 | cmd = RTM_DELROUTE; |
| 833 | break; |
Eric Andersen | 1a773a6 | 2003-12-19 10:47:40 +0000 | [diff] [blame^] | 834 | case 6: /* get */ |
Glenn L McGrath | c82f232 | 2002-12-02 00:35:23 +0000 | [diff] [blame] | 835 | return iproute_get(argc-1, argv+1); |
Eric Andersen | 1a773a6 | 2003-12-19 10:47:40 +0000 | [diff] [blame^] | 836 | case 7: /* list */ |
| 837 | case 8: /* show */ |
Glenn L McGrath | 4a4c677 | 2003-02-15 11:50:33 +0000 | [diff] [blame] | 838 | return iproute_list_or_flush(argc-1, argv+1, 0); |
Eric Andersen | 1a773a6 | 2003-12-19 10:47:40 +0000 | [diff] [blame^] | 839 | case 9: /* prepend */ |
Glenn L McGrath | c82f232 | 2002-12-02 00:35:23 +0000 | [diff] [blame] | 840 | flags = NLM_F_CREATE; |
Eric Andersen | 1a773a6 | 2003-12-19 10:47:40 +0000 | [diff] [blame^] | 841 | case 10: /* replace */ |
Glenn L McGrath | c82f232 | 2002-12-02 00:35:23 +0000 | [diff] [blame] | 842 | flags = NLM_F_CREATE|NLM_F_REPLACE; |
Eric Andersen | 1a773a6 | 2003-12-19 10:47:40 +0000 | [diff] [blame^] | 843 | case 11: /* test */ |
Glenn L McGrath | c82f232 | 2002-12-02 00:35:23 +0000 | [diff] [blame] | 844 | flags = NLM_F_EXCL; |
Eric Andersen | 1a773a6 | 2003-12-19 10:47:40 +0000 | [diff] [blame^] | 845 | case 12: /* flush */ |
Glenn L McGrath | 4a4c677 | 2003-02-15 11:50:33 +0000 | [diff] [blame] | 846 | return iproute_list_or_flush(argc-1, argv+1, 1); |
Glenn L McGrath | c82f232 | 2002-12-02 00:35:23 +0000 | [diff] [blame] | 847 | default: |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 848 | bb_error_msg_and_die("Unknown command %s", *argv); |
Glenn L McGrath | 1652855 | 2002-11-28 11:17:19 +0000 | [diff] [blame] | 849 | } |
Glenn L McGrath | c82f232 | 2002-12-02 00:35:23 +0000 | [diff] [blame] | 850 | |
| 851 | return iproute_modify(cmd, flags, argc-1, argv+1); |
Glenn L McGrath | 9a2d272 | 2002-11-10 01:33:55 +0000 | [diff] [blame] | 852 | } |
| 853 | |