osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 1 | /* |
| 2 | * rt_names.c rtnetlink names DB. |
| 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 | #include <stdio.h> |
| 13 | #include <stdlib.h> |
| 14 | #include <unistd.h> |
| 15 | #include <syslog.h> |
| 16 | #include <fcntl.h> |
| 17 | #include <string.h> |
| 18 | #include <sys/time.h> |
osdl.org!shemminger | b88fd9f | 2004-06-08 23:50:43 +0000 | [diff] [blame] | 19 | #include <sys/socket.h> |
| 20 | |
| 21 | #include <asm/types.h> |
| 22 | #include <linux/rtnetlink.h> |
| 23 | |
| 24 | #include "rt_names.h" |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 25 | |
Patrick McHardy | 9c47d87 | 2006-08-11 00:14:50 +0200 | [diff] [blame] | 26 | struct rtnl_hash_entry { |
| 27 | struct rtnl_hash_entry *next; |
| 28 | char * name; |
| 29 | unsigned int id; |
| 30 | }; |
| 31 | |
| 32 | static void |
| 33 | rtnl_hash_initialize(char *file, struct rtnl_hash_entry **hash, int size) |
| 34 | { |
| 35 | struct rtnl_hash_entry *entry; |
| 36 | char buf[512]; |
| 37 | FILE *fp; |
| 38 | |
| 39 | fp = fopen(file, "r"); |
| 40 | if (!fp) |
| 41 | return; |
| 42 | while (fgets(buf, sizeof(buf), fp)) { |
| 43 | char *p = buf; |
| 44 | int id; |
| 45 | char namebuf[512]; |
| 46 | |
| 47 | while (*p == ' ' || *p == '\t') |
| 48 | p++; |
| 49 | if (*p == '#' || *p == '\n' || *p == 0) |
| 50 | continue; |
| 51 | if (sscanf(p, "0x%x %s\n", &id, namebuf) != 2 && |
| 52 | sscanf(p, "0x%x %s #", &id, namebuf) != 2 && |
| 53 | sscanf(p, "%d %s\n", &id, namebuf) != 2 && |
| 54 | sscanf(p, "%d %s #", &id, namebuf) != 2) { |
| 55 | fprintf(stderr, "Database %s is corrupted at %s\n", |
| 56 | file, p); |
| 57 | return; |
| 58 | } |
| 59 | |
| 60 | if (id<0) |
| 61 | continue; |
| 62 | entry = malloc(sizeof(*entry)); |
| 63 | entry->id = id; |
| 64 | entry->name = strdup(namebuf); |
| 65 | entry->next = hash[id & (size - 1)]; |
| 66 | hash[id & (size - 1)] = entry; |
| 67 | } |
| 68 | fclose(fp); |
| 69 | } |
| 70 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 71 | static void rtnl_tab_initialize(char *file, char **tab, int size) |
| 72 | { |
| 73 | char buf[512]; |
| 74 | FILE *fp; |
| 75 | |
| 76 | fp = fopen(file, "r"); |
| 77 | if (!fp) |
| 78 | return; |
| 79 | while (fgets(buf, sizeof(buf), fp)) { |
| 80 | char *p = buf; |
| 81 | int id; |
| 82 | char namebuf[512]; |
| 83 | |
| 84 | while (*p == ' ' || *p == '\t') |
| 85 | p++; |
| 86 | if (*p == '#' || *p == '\n' || *p == 0) |
| 87 | continue; |
| 88 | if (sscanf(p, "0x%x %s\n", &id, namebuf) != 2 && |
| 89 | sscanf(p, "0x%x %s #", &id, namebuf) != 2 && |
| 90 | sscanf(p, "%d %s\n", &id, namebuf) != 2 && |
| 91 | sscanf(p, "%d %s #", &id, namebuf) != 2) { |
| 92 | fprintf(stderr, "Database %s is corrupted at %s\n", |
| 93 | file, p); |
| 94 | return; |
| 95 | } |
| 96 | |
| 97 | if (id<0 || id>size) |
| 98 | continue; |
| 99 | |
| 100 | tab[id] = strdup(namebuf); |
| 101 | } |
| 102 | fclose(fp); |
| 103 | } |
| 104 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 105 | static char * rtnl_rtprot_tab[256] = { |
osdl.org!shemminger | b88fd9f | 2004-06-08 23:50:43 +0000 | [diff] [blame] | 106 | [RTPROT_UNSPEC] = "none", |
| 107 | [RTPROT_REDIRECT] ="redirect", |
| 108 | [RTPROT_KERNEL] = "kernel", |
| 109 | [RTPROT_BOOT] = "boot", |
| 110 | [RTPROT_STATIC] = "static", |
| 111 | |
| 112 | [RTPROT_GATED] = "gated", |
| 113 | [RTPROT_RA] = "ra", |
| 114 | [RTPROT_MRT] = "mrt", |
| 115 | [RTPROT_ZEBRA] ="zebra", |
| 116 | [RTPROT_BIRD] = "bird", |
| 117 | [RTPROT_DNROUTED] = "dnrouted", |
| 118 | [RTPROT_XORP] = "xorp", |
shemminger | 40b6c62 | 2006-03-10 23:44:04 +0000 | [diff] [blame] | 119 | [RTPROT_NTK] = "ntk", |
Stephen Hemminger | 1e659af | 2009-03-18 13:33:12 -0700 | [diff] [blame^] | 120 | [RTPROT_DHCP] = "dhcp", |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 121 | }; |
| 122 | |
| 123 | |
| 124 | |
| 125 | static int rtnl_rtprot_init; |
| 126 | |
| 127 | static void rtnl_rtprot_initialize(void) |
| 128 | { |
| 129 | rtnl_rtprot_init = 1; |
| 130 | rtnl_tab_initialize("/etc/iproute2/rt_protos", |
| 131 | rtnl_rtprot_tab, 256); |
| 132 | } |
| 133 | |
| 134 | char * rtnl_rtprot_n2a(int id, char *buf, int len) |
| 135 | { |
| 136 | if (id<0 || id>=256) { |
| 137 | snprintf(buf, len, "%d", id); |
| 138 | return buf; |
| 139 | } |
| 140 | if (!rtnl_rtprot_tab[id]) { |
| 141 | if (!rtnl_rtprot_init) |
| 142 | rtnl_rtprot_initialize(); |
| 143 | } |
| 144 | if (rtnl_rtprot_tab[id]) |
| 145 | return rtnl_rtprot_tab[id]; |
| 146 | snprintf(buf, len, "%d", id); |
| 147 | return buf; |
| 148 | } |
| 149 | |
| 150 | int rtnl_rtprot_a2n(__u32 *id, char *arg) |
| 151 | { |
| 152 | static char *cache = NULL; |
| 153 | static unsigned long res; |
| 154 | char *end; |
| 155 | int i; |
| 156 | |
| 157 | if (cache && strcmp(cache, arg) == 0) { |
| 158 | *id = res; |
| 159 | return 0; |
| 160 | } |
| 161 | |
| 162 | if (!rtnl_rtprot_init) |
| 163 | rtnl_rtprot_initialize(); |
| 164 | |
| 165 | for (i=0; i<256; i++) { |
| 166 | if (rtnl_rtprot_tab[i] && |
| 167 | strcmp(rtnl_rtprot_tab[i], arg) == 0) { |
| 168 | cache = rtnl_rtprot_tab[i]; |
| 169 | res = i; |
| 170 | *id = res; |
| 171 | return 0; |
| 172 | } |
| 173 | } |
| 174 | |
| 175 | res = strtoul(arg, &end, 0); |
| 176 | if (!end || end == arg || *end || res > 255) |
| 177 | return -1; |
| 178 | *id = res; |
| 179 | return 0; |
| 180 | } |
| 181 | |
| 182 | |
| 183 | |
| 184 | static char * rtnl_rtscope_tab[256] = { |
| 185 | "global", |
| 186 | }; |
| 187 | |
| 188 | static int rtnl_rtscope_init; |
| 189 | |
| 190 | static void rtnl_rtscope_initialize(void) |
| 191 | { |
| 192 | rtnl_rtscope_init = 1; |
| 193 | rtnl_rtscope_tab[255] = "nowhere"; |
| 194 | rtnl_rtscope_tab[254] = "host"; |
| 195 | rtnl_rtscope_tab[253] = "link"; |
| 196 | rtnl_rtscope_tab[200] = "site"; |
| 197 | rtnl_tab_initialize("/etc/iproute2/rt_scopes", |
| 198 | rtnl_rtscope_tab, 256); |
| 199 | } |
| 200 | |
| 201 | char * rtnl_rtscope_n2a(int id, char *buf, int len) |
| 202 | { |
| 203 | if (id<0 || id>=256) { |
| 204 | snprintf(buf, len, "%d", id); |
| 205 | return buf; |
| 206 | } |
| 207 | if (!rtnl_rtscope_tab[id]) { |
| 208 | if (!rtnl_rtscope_init) |
| 209 | rtnl_rtscope_initialize(); |
| 210 | } |
| 211 | if (rtnl_rtscope_tab[id]) |
| 212 | return rtnl_rtscope_tab[id]; |
| 213 | snprintf(buf, len, "%d", id); |
| 214 | return buf; |
| 215 | } |
| 216 | |
| 217 | int rtnl_rtscope_a2n(__u32 *id, char *arg) |
| 218 | { |
| 219 | static char *cache = NULL; |
| 220 | static unsigned long res; |
| 221 | char *end; |
| 222 | int i; |
| 223 | |
| 224 | if (cache && strcmp(cache, arg) == 0) { |
| 225 | *id = res; |
| 226 | return 0; |
| 227 | } |
| 228 | |
| 229 | if (!rtnl_rtscope_init) |
| 230 | rtnl_rtscope_initialize(); |
| 231 | |
| 232 | for (i=0; i<256; i++) { |
| 233 | if (rtnl_rtscope_tab[i] && |
| 234 | strcmp(rtnl_rtscope_tab[i], arg) == 0) { |
| 235 | cache = rtnl_rtscope_tab[i]; |
| 236 | res = i; |
| 237 | *id = res; |
| 238 | return 0; |
| 239 | } |
| 240 | } |
| 241 | |
| 242 | res = strtoul(arg, &end, 0); |
| 243 | if (!end || end == arg || *end || res > 255) |
| 244 | return -1; |
| 245 | *id = res; |
| 246 | return 0; |
| 247 | } |
| 248 | |
| 249 | |
| 250 | |
| 251 | static char * rtnl_rtrealm_tab[256] = { |
| 252 | "unknown", |
| 253 | }; |
| 254 | |
| 255 | static int rtnl_rtrealm_init; |
| 256 | |
| 257 | static void rtnl_rtrealm_initialize(void) |
| 258 | { |
| 259 | rtnl_rtrealm_init = 1; |
| 260 | rtnl_tab_initialize("/etc/iproute2/rt_realms", |
| 261 | rtnl_rtrealm_tab, 256); |
| 262 | } |
| 263 | |
| 264 | char * rtnl_rtrealm_n2a(int id, char *buf, int len) |
| 265 | { |
| 266 | if (id<0 || id>=256) { |
| 267 | snprintf(buf, len, "%d", id); |
| 268 | return buf; |
| 269 | } |
| 270 | if (!rtnl_rtrealm_tab[id]) { |
| 271 | if (!rtnl_rtrealm_init) |
| 272 | rtnl_rtrealm_initialize(); |
| 273 | } |
| 274 | if (rtnl_rtrealm_tab[id]) |
| 275 | return rtnl_rtrealm_tab[id]; |
| 276 | snprintf(buf, len, "%d", id); |
| 277 | return buf; |
| 278 | } |
| 279 | |
| 280 | |
| 281 | int rtnl_rtrealm_a2n(__u32 *id, char *arg) |
| 282 | { |
| 283 | static char *cache = NULL; |
| 284 | static unsigned long res; |
| 285 | char *end; |
| 286 | int i; |
| 287 | |
| 288 | if (cache && strcmp(cache, arg) == 0) { |
| 289 | *id = res; |
| 290 | return 0; |
| 291 | } |
| 292 | |
| 293 | if (!rtnl_rtrealm_init) |
| 294 | rtnl_rtrealm_initialize(); |
| 295 | |
| 296 | for (i=0; i<256; i++) { |
| 297 | if (rtnl_rtrealm_tab[i] && |
| 298 | strcmp(rtnl_rtrealm_tab[i], arg) == 0) { |
| 299 | cache = rtnl_rtrealm_tab[i]; |
| 300 | res = i; |
| 301 | *id = res; |
| 302 | return 0; |
| 303 | } |
| 304 | } |
| 305 | |
| 306 | res = strtoul(arg, &end, 0); |
| 307 | if (!end || end == arg || *end || res > 255) |
| 308 | return -1; |
| 309 | *id = res; |
| 310 | return 0; |
| 311 | } |
| 312 | |
| 313 | |
Patrick McHardy | 9c47d87 | 2006-08-11 00:14:50 +0200 | [diff] [blame] | 314 | static struct rtnl_hash_entry dflt_table_entry = { .id = 253, .name = "default" }; |
| 315 | static struct rtnl_hash_entry main_table_entry = { .id = 254, .name = "main" }; |
| 316 | static struct rtnl_hash_entry local_table_entry = { .id = 255, .name = "local" }; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 317 | |
Patrick McHardy | 9c47d87 | 2006-08-11 00:14:50 +0200 | [diff] [blame] | 318 | static struct rtnl_hash_entry * rtnl_rttable_hash[256] = { |
| 319 | [253] = &dflt_table_entry, |
| 320 | [254] = &main_table_entry, |
| 321 | [255] = &local_table_entry, |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 322 | }; |
| 323 | |
| 324 | static int rtnl_rttable_init; |
| 325 | |
| 326 | static void rtnl_rttable_initialize(void) |
| 327 | { |
| 328 | rtnl_rttable_init = 1; |
Patrick McHardy | 9c47d87 | 2006-08-11 00:14:50 +0200 | [diff] [blame] | 329 | rtnl_hash_initialize("/etc/iproute2/rt_tables", |
| 330 | rtnl_rttable_hash, 256); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 331 | } |
| 332 | |
Patrick McHardy | 34e9564 | 2006-08-11 00:14:51 +0200 | [diff] [blame] | 333 | char * rtnl_rttable_n2a(__u32 id, char *buf, int len) |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 334 | { |
Patrick McHardy | 9c47d87 | 2006-08-11 00:14:50 +0200 | [diff] [blame] | 335 | struct rtnl_hash_entry *entry; |
| 336 | |
Boian Bonev | 887a5d0 | 2006-11-27 14:12:31 -0800 | [diff] [blame] | 337 | if (id > RT_TABLE_MAX) { |
Patrick McHardy | 9c47d87 | 2006-08-11 00:14:50 +0200 | [diff] [blame] | 338 | snprintf(buf, len, "%u", id); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 339 | return buf; |
| 340 | } |
Patrick McHardy | 9c47d87 | 2006-08-11 00:14:50 +0200 | [diff] [blame] | 341 | if (!rtnl_rttable_init) |
| 342 | rtnl_rttable_initialize(); |
| 343 | entry = rtnl_rttable_hash[id & 255]; |
| 344 | while (entry && entry->id != id) |
| 345 | entry = entry->next; |
| 346 | if (entry) |
| 347 | return entry->name; |
| 348 | snprintf(buf, len, "%u", id); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 349 | return buf; |
| 350 | } |
| 351 | |
| 352 | int rtnl_rttable_a2n(__u32 *id, char *arg) |
| 353 | { |
| 354 | static char *cache = NULL; |
| 355 | static unsigned long res; |
Patrick McHardy | 9c47d87 | 2006-08-11 00:14:50 +0200 | [diff] [blame] | 356 | struct rtnl_hash_entry *entry; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 357 | char *end; |
Patrick McHardy | 34e9564 | 2006-08-11 00:14:51 +0200 | [diff] [blame] | 358 | __u32 i; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 359 | |
| 360 | if (cache && strcmp(cache, arg) == 0) { |
| 361 | *id = res; |
| 362 | return 0; |
| 363 | } |
| 364 | |
| 365 | if (!rtnl_rttable_init) |
| 366 | rtnl_rttable_initialize(); |
| 367 | |
| 368 | for (i=0; i<256; i++) { |
Patrick McHardy | 9c47d87 | 2006-08-11 00:14:50 +0200 | [diff] [blame] | 369 | entry = rtnl_rttable_hash[i]; |
| 370 | while (entry && strcmp(entry->name, arg)) |
| 371 | entry = entry->next; |
| 372 | if (entry) { |
| 373 | cache = entry->name; |
| 374 | res = entry->id; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 375 | *id = res; |
| 376 | return 0; |
| 377 | } |
| 378 | } |
| 379 | |
| 380 | i = strtoul(arg, &end, 0); |
Patrick McHardy | 9c47d87 | 2006-08-11 00:14:50 +0200 | [diff] [blame] | 381 | if (!end || end == arg || *end || i > RT_TABLE_MAX) |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 382 | return -1; |
| 383 | *id = i; |
| 384 | return 0; |
| 385 | } |
| 386 | |
| 387 | |
| 388 | static char * rtnl_rtdsfield_tab[256] = { |
| 389 | "0", |
| 390 | }; |
| 391 | |
| 392 | static int rtnl_rtdsfield_init; |
| 393 | |
| 394 | static void rtnl_rtdsfield_initialize(void) |
| 395 | { |
| 396 | rtnl_rtdsfield_init = 1; |
| 397 | rtnl_tab_initialize("/etc/iproute2/rt_dsfield", |
| 398 | rtnl_rtdsfield_tab, 256); |
| 399 | } |
| 400 | |
| 401 | char * rtnl_dsfield_n2a(int id, char *buf, int len) |
| 402 | { |
| 403 | if (id<0 || id>=256) { |
| 404 | snprintf(buf, len, "%d", id); |
| 405 | return buf; |
| 406 | } |
| 407 | if (!rtnl_rtdsfield_tab[id]) { |
| 408 | if (!rtnl_rtdsfield_init) |
| 409 | rtnl_rtdsfield_initialize(); |
| 410 | } |
| 411 | if (rtnl_rtdsfield_tab[id]) |
| 412 | return rtnl_rtdsfield_tab[id]; |
| 413 | snprintf(buf, len, "0x%02x", id); |
| 414 | return buf; |
| 415 | } |
| 416 | |
| 417 | |
| 418 | int rtnl_dsfield_a2n(__u32 *id, char *arg) |
| 419 | { |
| 420 | static char *cache = NULL; |
| 421 | static unsigned long res; |
| 422 | char *end; |
| 423 | int i; |
| 424 | |
| 425 | if (cache && strcmp(cache, arg) == 0) { |
| 426 | *id = res; |
| 427 | return 0; |
| 428 | } |
| 429 | |
| 430 | if (!rtnl_rtdsfield_init) |
| 431 | rtnl_rtdsfield_initialize(); |
| 432 | |
| 433 | for (i=0; i<256; i++) { |
| 434 | if (rtnl_rtdsfield_tab[i] && |
| 435 | strcmp(rtnl_rtdsfield_tab[i], arg) == 0) { |
| 436 | cache = rtnl_rtdsfield_tab[i]; |
| 437 | res = i; |
| 438 | *id = res; |
| 439 | return 0; |
| 440 | } |
| 441 | } |
| 442 | |
| 443 | res = strtoul(arg, &end, 16); |
| 444 | if (!end || end == arg || *end || res > 255) |
| 445 | return -1; |
| 446 | *id = res; |
| 447 | return 0; |
| 448 | } |
| 449 | |