| File: | src/usr.sbin/ypserv/ypserv/ypserv_db.c |
| Warning: | line 384, column 3 Value stored to 'addr_name' is never read |
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| 1 | /* $OpenBSD: ypserv_db.c,v 1.32 2021/10/09 18:43:51 deraadt Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 1994 Mats O Jansson <moj@stacken.kth.se> |
| 5 | * Copyright (c) 1996 Charles D. Cranor |
| 6 | * All rights reserved. |
| 7 | * |
| 8 | * Redistribution and use in source and binary forms, with or without |
| 9 | * modification, are permitted provided that the following conditions |
| 10 | * are met: |
| 11 | * 1. Redistributions of source code must retain the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer. |
| 13 | * 2. Redistributions in binary form must reproduce the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer in the |
| 15 | * documentation and/or other materials provided with the distribution. |
| 16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS |
| 18 | * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 19 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| 21 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 27 | * SUCH DAMAGE. |
| 28 | */ |
| 29 | |
| 30 | /* |
| 31 | * major revision/cleanup of Mats' version |
| 32 | * done by Chuck Cranor <chuck@ccrc.wustl.edu> |
| 33 | * Jan 1996. |
| 34 | */ |
| 35 | |
| 36 | #include <rpc/rpc.h> |
| 37 | #include <rpcsvc/yp.h> |
| 38 | #include <rpcsvc/ypclnt.h> |
| 39 | #include <sys/stat.h> |
| 40 | #include <fcntl.h> |
| 41 | #include <string.h> |
| 42 | #include <stdio.h> |
| 43 | #include <stdlib.h> |
| 44 | #include <netdb.h> |
| 45 | #include <resolv.h> |
| 46 | #include <sys/types.h> |
| 47 | #include <sys/socket.h> |
| 48 | #include <sys/queue.h> |
| 49 | #include <netinet/in.h> |
| 50 | #include <arpa/inet.h> |
| 51 | #include <syslog.h> |
| 52 | #include <errno(*__errno()).h> |
| 53 | #include "yplog.h" |
| 54 | #include "ypdb.h" |
| 55 | #include "ypdef.h" |
| 56 | #include "ypserv.h" |
| 57 | |
| 58 | LIST_HEAD(domainlist, opt_domain)struct domainlist { struct opt_domain *lh_first; }; /* LIST of domains */ |
| 59 | LIST_HEAD(maplist, opt_map)struct maplist { struct opt_map *lh_first; }; /* LIST of maps (in a domain) */ |
| 60 | TAILQ_HEAD(mapq, opt_map)struct mapq { struct opt_map *tqh_first; struct opt_map **tqh_last ; }; /* TAILQ of maps (LRU) */ |
| 61 | |
| 62 | struct opt_map { |
| 63 | mapname map; /* map name (malloc'd) */ |
| 64 | DBM *db; /* database */ |
| 65 | struct opt_domain *dom; /* back ptr to our domain */ |
| 66 | int host_lookup; /* host lookup */ |
| 67 | int secure; /* secure map? */ |
| 68 | TAILQ_ENTRY(opt_map)struct { struct opt_map *tqe_next; struct opt_map **tqe_prev; } mapsq; /* map queue pointers */ |
| 69 | LIST_ENTRY(opt_map)struct { struct opt_map *le_next; struct opt_map **le_prev; } mapsl; /* map list pointers */ |
| 70 | }; |
| 71 | |
| 72 | struct opt_domain { |
| 73 | domainname domain; /* domain name (malloc'd) */ |
| 74 | struct maplist dmaps; /* the domain's active maps */ |
| 75 | LIST_ENTRY(opt_domain)struct { struct opt_domain *le_next; struct opt_domain **le_prev ; } domsl; /* global linked list of domains */ |
| 76 | }; |
| 77 | |
| 78 | struct domainlist doms; /* global list of domains */ |
| 79 | struct mapq maps; /* global queue of maps (LRU) */ |
| 80 | |
| 81 | extern int usedns; |
| 82 | |
| 83 | /* |
| 84 | * ypdb_init: init the queues and lists |
| 85 | */ |
| 86 | void |
| 87 | ypdb_init(void) |
| 88 | { |
| 89 | LIST_INIT(&doms)do { ((&doms)->lh_first) = 0; } while (0); |
| 90 | TAILQ_INIT(&maps)do { (&maps)->tqh_first = 0; (&maps)->tqh_last = &(&maps)->tqh_first; } while (0); |
| 91 | } |
| 92 | |
| 93 | /* |
| 94 | * yp_private: |
| 95 | * Check if key is a YP private key. Return TRUE if it is and |
| 96 | * ypprivate is FALSE. |
| 97 | */ |
| 98 | static int |
| 99 | yp_private(datum key, int ypprivate) |
| 100 | { |
| 101 | if (ypprivate) |
| 102 | return (FALSE(0)); |
| 103 | |
| 104 | if (key.dsize == 0 || key.dptr == NULL0) |
| 105 | return (FALSE(0)); |
| 106 | |
| 107 | if (key.dsize == YP_LAST_LEN(sizeof("YP_LAST_MODIFIED")-1) && |
| 108 | strncmp(key.dptr, YP_LAST_KEY"YP_LAST_MODIFIED", YP_LAST_LEN(sizeof("YP_LAST_MODIFIED")-1)) == 0) |
| 109 | return(TRUE(1)); |
| 110 | if (key.dsize == YP_INPUT_LEN(sizeof("YP_INPUT_FILE")-1) && |
| 111 | strncmp(key.dptr, YP_INPUT_KEY"YP_INPUT_FILE", YP_INPUT_LEN(sizeof("YP_INPUT_FILE")-1)) == 0) |
| 112 | return(TRUE(1)); |
| 113 | if (key.dsize == YP_OUTPUT_LEN(sizeof("YP_OUTPUT_FILE")-1) && |
| 114 | strncmp(key.dptr, YP_OUTPUT_KEY"YP_OUTPUT_FILE", YP_OUTPUT_LEN(sizeof("YP_OUTPUT_FILE")-1)) == 0) |
| 115 | return(TRUE(1)); |
| 116 | if (key.dsize == YP_MASTER_LEN(sizeof("YP_MASTER_NAME")-1) && |
| 117 | strncmp(key.dptr, YP_MASTER_KEY"YP_MASTER_NAME", YP_MASTER_LEN(sizeof("YP_MASTER_NAME")-1)) == 0) |
| 118 | return(TRUE(1)); |
| 119 | if (key.dsize == YP_DOMAIN_LEN(sizeof("YP_DOMAIN_NAME")-1) && |
| 120 | strncmp(key.dptr, YP_DOMAIN_KEY"YP_DOMAIN_NAME", YP_DOMAIN_LEN(sizeof("YP_DOMAIN_NAME")-1)) == 0) |
| 121 | return(TRUE(1)); |
| 122 | if (key.dsize == YP_INTERDOMAIN_LEN(sizeof("YP_INTERDOMAIN")-1) && |
| 123 | strncmp(key.dptr, YP_INTERDOMAIN_KEY"YP_INTERDOMAIN", YP_INTERDOMAIN_LEN(sizeof("YP_INTERDOMAIN")-1)) == 0) |
| 124 | return(TRUE(1)); |
| 125 | if (key.dsize == YP_SECURE_LEN(sizeof("YP_SECURE")-1) && |
| 126 | strncmp(key.dptr, YP_SECURE_KEY"YP_SECURE", YP_SECURE_LEN(sizeof("YP_SECURE")-1)) == 0) |
| 127 | return(TRUE(1)); |
| 128 | return(FALSE(0)); |
| 129 | } |
| 130 | |
| 131 | /* |
| 132 | * Close least recent used map. This routine is called when we have |
| 133 | * no more file descripotors free, or we want to close all maps. |
| 134 | */ |
| 135 | static void |
| 136 | ypdb_close_last(void) |
| 137 | { |
| 138 | struct opt_map *last; |
| 139 | |
| 140 | if (TAILQ_EMPTY(&maps)(((&maps)->tqh_first) == 0)) { |
| 141 | yplog(" ypdb_close_last: LRU list is empty!"); |
| 142 | return; |
| 143 | } |
| 144 | |
| 145 | last = TAILQ_LAST(&maps, mapq)(*(((struct mapq *)((&maps)->tqh_last))->tqh_last)); |
| 146 | |
| 147 | TAILQ_REMOVE(&maps, last, mapsq)do { if (((last)->mapsq.tqe_next) != 0) (last)->mapsq.tqe_next ->mapsq.tqe_prev = (last)->mapsq.tqe_prev; else (&maps )->tqh_last = (last)->mapsq.tqe_prev; *(last)->mapsq .tqe_prev = (last)->mapsq.tqe_next; ; ; } while (0); /* remove from LRU circleq */ |
| 148 | LIST_REMOVE(last, mapsl)do { if ((last)->mapsl.le_next != 0) (last)->mapsl.le_next ->mapsl.le_prev = (last)->mapsl.le_prev; *(last)->mapsl .le_prev = (last)->mapsl.le_next; ; ; } while (0); /* remove from domain list */ |
| 149 | |
| 150 | #ifdef DEBUG |
| 151 | yplog(" ypdb_close_last: closing map %s in domain %s [db=0x%x]", |
| 152 | last->map, last->dom->domain, last->db); |
| 153 | #endif |
| 154 | |
| 155 | ypdb_close(last->db); /* close DB */ |
| 156 | free(last->map); /* free map name */ |
| 157 | free(last); /* free map */ |
| 158 | } |
| 159 | |
| 160 | /* |
| 161 | * Close all open maps. |
| 162 | */ |
| 163 | void |
| 164 | ypdb_close_all(void) |
| 165 | { |
| 166 | |
| 167 | #ifdef DEBUG |
| 168 | yplog(" ypdb_close_all(): start"); |
| 169 | #endif |
| 170 | while (!TAILQ_EMPTY(&maps)(((&maps)->tqh_first) == 0)) |
| 171 | ypdb_close_last(); |
| 172 | #ifdef DEBUG |
| 173 | yplog(" ypdb_close_all(): done"); |
| 174 | #endif |
| 175 | } |
| 176 | |
| 177 | /* |
| 178 | * Close Database if Open/Close Optimization isn't turned on. |
| 179 | */ |
| 180 | static void |
| 181 | ypdb_close_db(DBM *db) |
| 182 | { |
| 183 | #ifdef DEBUG |
| 184 | yplog(" ypdb_close_db(0x%x)", db); |
| 185 | #endif |
| 186 | #ifndef OPTDB1 |
| 187 | ypdb_close_all(); |
| 188 | #endif |
| 189 | } |
| 190 | |
| 191 | /* |
| 192 | * ypdb_open_db |
| 193 | */ |
| 194 | DBM * |
| 195 | ypdb_open_db(domainname domain, mapname map, ypstat *status, |
| 196 | struct opt_map **map_info) |
| 197 | { |
| 198 | char map_path[PATH_MAX1024]; |
| 199 | static char *domain_key = YP_INTERDOMAIN_KEY"YP_INTERDOMAIN"; |
| 200 | static char *secure_key = YP_SECURE_KEY"YP_SECURE"; |
| 201 | DBM *db; |
| 202 | struct opt_domain *d = NULL0; |
| 203 | struct opt_map *m = NULL0; |
| 204 | datum k, v; |
| 205 | #ifdef OPTDB1 |
| 206 | int i; |
| 207 | #endif |
| 208 | |
| 209 | /* |
| 210 | * check for preloaded domain, map |
| 211 | */ |
| 212 | LIST_FOREACH(d, &doms, domsl)for((d) = ((&doms)->lh_first); (d)!= 0; (d) = ((d)-> domsl.le_next)) { |
| 213 | if (strcmp(domain, d->domain) == 0) |
| 214 | break; |
| 215 | } |
| 216 | |
| 217 | if (d) { |
| 218 | LIST_FOREACH(m, &d->dmaps, mapsl)for((m) = ((&d->dmaps)->lh_first); (m)!= 0; (m) = ( (m)->mapsl.le_next)) |
| 219 | if (strcmp(map, m->map) == 0) |
| 220 | break; |
| 221 | } |
| 222 | |
| 223 | /* |
| 224 | * map found open? |
| 225 | */ |
| 226 | if (m) { |
| 227 | #ifdef DEBUG |
| 228 | yplog(" ypdb_open_db: cached open: domain=%s, map=%s, db=0x%x", |
| 229 | domain, map, m->db); |
| 230 | #endif |
| 231 | TAILQ_REMOVE(&maps, m, mapsq)do { if (((m)->mapsq.tqe_next) != 0) (m)->mapsq.tqe_next ->mapsq.tqe_prev = (m)->mapsq.tqe_prev; else (&maps )->tqh_last = (m)->mapsq.tqe_prev; *(m)->mapsq.tqe_prev = (m)->mapsq.tqe_next; ; ; } while (0); /* adjust LRU queue */ |
| 232 | TAILQ_INSERT_HEAD(&maps, m, mapsq)do { if (((m)->mapsq.tqe_next = (&maps)->tqh_first) != 0) (&maps)->tqh_first->mapsq.tqe_prev = &(m )->mapsq.tqe_next; else (&maps)->tqh_last = &(m )->mapsq.tqe_next; (&maps)->tqh_first = (m); (m)-> mapsq.tqe_prev = &(&maps)->tqh_first; } while (0); |
| 233 | *status = YP_TRUE; |
| 234 | if (map_info) |
| 235 | *map_info = m; |
| 236 | return(m->db); |
| 237 | } |
| 238 | |
| 239 | /* Check for illegal charcaters */ |
| 240 | |
| 241 | if (strchr(domain, '/')) { |
| 242 | *status = YP_NODOM; |
| 243 | return (NULL0); |
| 244 | } |
| 245 | if (strchr(map, '/')) { |
| 246 | *status = YP_NOMAP; |
| 247 | return (NULL0); |
| 248 | } |
| 249 | |
| 250 | /* |
| 251 | * open map |
| 252 | */ |
| 253 | #ifdef OPTDB1 |
| 254 | i = 0; |
| 255 | while (i == 0) { |
| 256 | #endif |
| 257 | snprintf(map_path, sizeof(map_path), "%s/%s/%s", YP_DB_PATH"/var/yp", |
| 258 | domain, map); |
| 259 | db = ypdb_open(map_path, O_RDONLY0x0000, 0444); |
| 260 | #ifdef OPTDB1 |
| 261 | if (db == NULL0) { |
| 262 | #ifdef DEBUG |
| 263 | yplog(" ypdb_open_db: errno %d (%s)", |
| 264 | errno(*__errno()), sys_errlist[errno(*__errno())]); |
| 265 | #endif |
| 266 | if (errno(*__errno()) == ENFILE23 || errno(*__errno()) == EMFILE24) { |
| 267 | ypdb_close_last(); |
| 268 | } else { |
| 269 | i = errno(*__errno()); |
| 270 | } |
| 271 | } else { |
| 272 | i = 4711; |
| 273 | } |
| 274 | } |
| 275 | #endif |
| 276 | *status = YP_NOMAP; /* see note below */ |
| 277 | if (db == NULL0) { |
| 278 | if (errno(*__errno()) == ENOENT2) { |
| 279 | #ifdef DEBUG |
| 280 | yplog(" ypdb_open_db: no map %s (domain=%s)", |
| 281 | map, domain); |
| 282 | #endif |
| 283 | return(NULL0); |
| 284 | } |
| 285 | #ifdef DEBUG |
| 286 | yplog(" ypdb_open_db: ypdb_open FAILED: map %s (domain=%s)", |
| 287 | map, domain); |
| 288 | #endif |
| 289 | return(NULL0); |
| 290 | } |
| 291 | |
| 292 | /* |
| 293 | * note: status now YP_NOMAP |
| 294 | */ |
| 295 | |
| 296 | if (d == NULL0) { /* allocate new domain? */ |
| 297 | d = malloc(sizeof(*d)); |
| 298 | if (d) |
| 299 | d->domain = strdup(domain); |
| 300 | if (d == NULL0 || d->domain == NULL0) { |
| 301 | yplog(" ypdb_open_db: MALLOC failed"); |
| 302 | ypdb_close(db); |
| 303 | free(d); |
| 304 | return(NULL0); |
| 305 | } |
| 306 | LIST_INIT(&d->dmaps)do { ((&d->dmaps)->lh_first) = 0; } while (0); |
| 307 | LIST_INSERT_HEAD(&doms, d, domsl)do { if (((d)->domsl.le_next = (&doms)->lh_first) != 0) (&doms)->lh_first->domsl.le_prev = &(d)-> domsl.le_next; (&doms)->lh_first = (d); (d)->domsl. le_prev = &(&doms)->lh_first; } while (0); |
| 308 | #ifdef DEBUG |
| 309 | yplog(" ypdb_open_db: NEW DOMAIN %s", domain); |
| 310 | #endif |
| 311 | } |
| 312 | |
| 313 | /* |
| 314 | * m must be NULL since we couldn't find a map. allocate new one |
| 315 | */ |
| 316 | |
| 317 | m = malloc(sizeof(*m)); |
| 318 | if (m) |
| 319 | m->map = strdup(map); |
| 320 | if (m == NULL0 || m->map == NULL0) { |
| 321 | free(m); |
| 322 | yplog(" ypdb_open_db: MALLOC failed"); |
| 323 | ypdb_close(db); |
| 324 | return(NULL0); |
| 325 | } |
| 326 | m->db = db; |
| 327 | m->dom = d; |
| 328 | m->host_lookup = FALSE(0); |
| 329 | TAILQ_INSERT_HEAD(&maps, m, mapsq)do { if (((m)->mapsq.tqe_next = (&maps)->tqh_first) != 0) (&maps)->tqh_first->mapsq.tqe_prev = &(m )->mapsq.tqe_next; else (&maps)->tqh_last = &(m )->mapsq.tqe_next; (&maps)->tqh_first = (m); (m)-> mapsq.tqe_prev = &(&maps)->tqh_first; } while (0); |
| 330 | LIST_INSERT_HEAD(&d->dmaps, m, mapsl)do { if (((m)->mapsl.le_next = (&d->dmaps)->lh_first ) != 0) (&d->dmaps)->lh_first->mapsl.le_prev = & (m)->mapsl.le_next; (&d->dmaps)->lh_first = (m); (m)->mapsl.le_prev = &(&d->dmaps)->lh_first ; } while (0); |
| 331 | if (strcmp(map, YP_HOSTNAME"hosts.byname") == 0 || strcmp(map, YP_HOSTADDR"hosts.byaddr") == 0) { |
| 332 | if (!usedns) { |
| 333 | k.dptr = domain_key; |
| 334 | k.dsize = YP_INTERDOMAIN_LEN(sizeof("YP_INTERDOMAIN")-1); |
| 335 | v = ypdb_fetch(db, k); |
| 336 | if (v.dptr) |
| 337 | m->host_lookup = TRUE(1); |
| 338 | } else |
| 339 | m->host_lookup = TRUE(1); |
| 340 | } |
| 341 | m->secure = FALSE(0); |
| 342 | k.dptr = secure_key; |
| 343 | k.dsize = YP_SECURE_LEN(sizeof("YP_SECURE")-1); |
| 344 | v = ypdb_fetch(db, k); |
| 345 | if (v.dptr) |
| 346 | m->secure = TRUE(1); |
| 347 | *status = YP_TRUE; |
| 348 | if (map_info) |
| 349 | *map_info = m; |
| 350 | #ifdef DEBUG |
| 351 | yplog(" ypdb_open_db: NEW MAP domain=%s, map=%s, hl=%d, s=%d, db=0x%x", |
| 352 | domain, map, m->host_lookup, m->secure, m->db); |
| 353 | #endif |
| 354 | return(m->db); |
| 355 | } |
| 356 | |
| 357 | /* |
| 358 | * lookup host |
| 359 | */ |
| 360 | static ypstat |
| 361 | lookup_host(int nametable, int host_lookup, DBM *db, char *keystr, |
| 362 | ypresp_val *result) |
| 363 | { |
| 364 | struct hostent *host; |
| 365 | struct in_addr *addr_name; |
| 366 | struct in_addr addr_addr; |
| 367 | static char val[BUFSIZ1024+1]; /* match libc */ |
| 368 | static char hostname[HOST_NAME_MAX255+1]; |
| 369 | char tmpbuf[HOST_NAME_MAX255+1 + 20], *v, *ptr; |
| 370 | size_t len; |
| 371 | int l; |
| 372 | |
| 373 | if (!host_lookup) |
| 374 | return(YP_NOKEY); |
| 375 | |
| 376 | if ((_res.options & RES_INIT0x00000001) == 0) |
| 377 | res_init(); |
| 378 | bcopy("b", _res.lookups, sizeof("b")); |
| 379 | |
| 380 | if (nametable) { |
| 381 | host = gethostbyname(keystr); |
| 382 | if (host == NULL0 || host->h_addrtype != AF_INET2) |
| 383 | return(YP_NOKEY); |
| 384 | addr_name = (struct in_addr *) *host->h_addr_list; |
Value stored to 'addr_name' is never read | |
| 385 | v = val; |
| 386 | for (; host->h_addr_list[0] != NULL0; host->h_addr_list++) { |
| 387 | addr_name = (struct in_addr *)host->h_addr_list[0]; |
| 388 | snprintf(tmpbuf, sizeof(tmpbuf), "%s %s\n", |
| 389 | inet_ntoa(*addr_name), host->h_name); |
| 390 | len = strlcat(val, tmpbuf, sizeof(val)); |
| 391 | if (len >= sizeof(val)) |
| 392 | break; |
| 393 | v = val + len; |
| 394 | } |
| 395 | result->val.valdat_val = val; |
| 396 | result->val.valdat_len = v - val; |
| 397 | return(YP_TRUE); |
| 398 | } |
| 399 | |
| 400 | inet_aton(keystr, &addr_addr); |
| 401 | host = gethostbyaddr((char *)&addr_addr, sizeof(addr_addr), AF_INET2); |
| 402 | if (host == NULL0) return(YP_NOKEY); |
| 403 | |
| 404 | strncpy((char *)hostname, host->h_name, sizeof(hostname) - 1); |
| 405 | hostname[sizeof(hostname) - 1] = '\0'; |
| 406 | host = gethostbyname((char *)hostname); |
| 407 | if (host == NULL0) |
| 408 | return(YP_NOKEY); |
| 409 | |
| 410 | l = 0; |
| 411 | for (; host->h_addr_list[0] != NULL0; host->h_addr_list++) |
| 412 | if (!bcmp(host->h_addr_list[0], &addr_addr, sizeof(addr_addr))) |
| 413 | l++; |
| 414 | if (l == 0) { |
| 415 | yplog("lookup_host: address %s not listed for host %s\n", |
| 416 | inet_ntoa(addr_addr), hostname); |
| 417 | syslog(LOG_NOTICE5, |
| 418 | "ypserv: address %s not listed for host %s\n", |
| 419 | inet_ntoa(addr_addr), hostname); |
| 420 | return(YP_NOKEY); |
| 421 | } |
| 422 | |
| 423 | len = snprintf(val, sizeof(val), "%s %s", keystr, host->h_name); |
| 424 | if (len < 0 || len >= sizeof(val)) |
| 425 | return(YP_YPERR); |
| 426 | v = val + len; |
| 427 | while ((ptr = *(host->h_aliases)) != NULL0) { |
| 428 | strlcat(val, " ", sizeof(val)); |
| 429 | len = strlcat(val, ptr, sizeof(val)); |
| 430 | if (len >= sizeof(val)) |
| 431 | break; |
| 432 | v = val + len; |
| 433 | host->h_aliases++; |
| 434 | } |
| 435 | result->val.valdat_val = val; |
| 436 | result->val.valdat_len = v - val; |
| 437 | |
| 438 | return(YP_TRUE); |
| 439 | } |
| 440 | |
| 441 | ypresp_val |
| 442 | ypdb_get_record(domainname domain, mapname map, keydat key, int ypprivate) |
| 443 | { |
| 444 | static ypresp_val res; |
| 445 | static char keystr[YPMAXRECORD1024+1]; |
| 446 | DBM *db; |
| 447 | datum k, v; |
| 448 | int host_lookup = 0, hn; |
| 449 | struct opt_map *map_info = NULL0; |
| 450 | |
| 451 | bzero(&res, sizeof(res)); |
| 452 | |
| 453 | db = ypdb_open_db(domain, map, &res.stat, &map_info); |
| 454 | if (!db || res.stat < 0) |
| 455 | return(res); |
| 456 | if (map_info) |
| 457 | host_lookup = map_info->host_lookup; |
| 458 | |
| 459 | k.dptr = key.keydat_val; |
| 460 | k.dsize = key.keydat_len; |
| 461 | |
| 462 | if (yp_private(k, ypprivate)) { |
| 463 | res.stat = YP_NOKEY; |
| 464 | goto done; |
| 465 | } |
| 466 | |
| 467 | v = ypdb_fetch(db, k); |
| 468 | |
| 469 | if (v.dptr == NULL0) { |
| 470 | res.stat = YP_NOKEY; |
| 471 | if ((hn = strcmp(map, YP_HOSTNAME"hosts.byname")) != 0 && |
| 472 | strcmp(map, YP_HOSTADDR"hosts.byaddr") != 0) |
| 473 | goto done; |
| 474 | /* note: lookup_host needs null terminated string */ |
| 475 | strncpy(keystr, key.keydat_val, key.keydat_len); |
| 476 | keystr[key.keydat_len] = '\0'; |
| 477 | res.stat = lookup_host((hn == 0) ? TRUE(1) : FALSE(0), |
| 478 | host_lookup, db, keystr, &res); |
| 479 | } else { |
| 480 | res.val.valdat_val = v.dptr; |
| 481 | res.val.valdat_len = v.dsize; |
| 482 | } |
| 483 | |
| 484 | done: |
| 485 | ypdb_close_db(db); |
| 486 | return(res); |
| 487 | } |
| 488 | |
| 489 | ypresp_key_val |
| 490 | ypdb_get_first(domainname domain, mapname map, int ypprivate) |
| 491 | { |
| 492 | static ypresp_key_val res; |
| 493 | DBM *db; |
| 494 | datum k, v; |
| 495 | |
| 496 | bzero(&res, sizeof(res)); |
| 497 | |
| 498 | db = ypdb_open_db(domain, map, &res.stat, NULL0); |
| 499 | |
| 500 | if (res.stat >= 0) { |
| 501 | k = ypdb_firstkey(db); |
| 502 | |
| 503 | while (yp_private(k, ypprivate)) |
| 504 | k = ypdb_nextkey(db); |
| 505 | |
| 506 | if (k.dptr == NULL0) { |
| 507 | res.stat = YP_NOKEY; |
| 508 | } else { |
| 509 | res.key.keydat_val = k.dptr; |
| 510 | res.key.keydat_len = k.dsize; |
| 511 | v = ypdb_fetch(db, k); |
| 512 | if (v.dptr == NULL0) { |
| 513 | res.stat = YP_NOKEY; |
| 514 | } else { |
| 515 | res.val.valdat_val = v.dptr; |
| 516 | res.val.valdat_len = v.dsize; |
| 517 | } |
| 518 | } |
| 519 | } |
| 520 | ypdb_close_db(db); |
| 521 | return (res); |
| 522 | } |
| 523 | |
| 524 | ypresp_key_val |
| 525 | ypdb_get_next(domainname domain, mapname map, keydat key, int ypprivate) |
| 526 | { |
| 527 | static ypresp_key_val res; |
| 528 | DBM *db; |
| 529 | datum k, v, n; |
| 530 | |
| 531 | bzero(&res, sizeof(res)); |
| 532 | db = ypdb_open_db(domain, map, &res.stat, NULL0); |
| 533 | |
| 534 | if (res.stat >= 0) { |
| 535 | n.dptr = key.keydat_val; |
| 536 | n.dsize = key.keydat_len; |
| 537 | v.dptr = NULL0; |
| 538 | v.dsize = 0; |
| 539 | k.dptr = NULL0; |
| 540 | k.dsize = 0; |
| 541 | |
| 542 | n = ypdb_setkey(db, n); |
| 543 | |
| 544 | if (n.dptr != NULL0) |
| 545 | k = ypdb_nextkey(db); |
| 546 | else |
| 547 | k.dptr = NULL0; |
| 548 | |
| 549 | if (k.dptr != NULL0) { |
| 550 | while (yp_private(k, ypprivate)) |
| 551 | k = ypdb_nextkey(db); |
| 552 | } |
| 553 | |
| 554 | if (k.dptr == NULL0) { |
| 555 | res.stat = YP_NOMORE; |
| 556 | } else { |
| 557 | res.key.keydat_val = k.dptr; |
| 558 | res.key.keydat_len = k.dsize; |
| 559 | v = ypdb_fetch(db, k); |
| 560 | if (v.dptr == NULL0) { |
| 561 | res.stat = YP_NOMORE; |
| 562 | } else { |
| 563 | res.val.valdat_val = v.dptr; |
| 564 | res.val.valdat_len = v.dsize; |
| 565 | } |
| 566 | } |
| 567 | } |
| 568 | ypdb_close_db(db); |
| 569 | return (res); |
| 570 | } |
| 571 | |
| 572 | ypresp_order |
| 573 | ypdb_get_order(domainname domain, mapname map) |
| 574 | { |
| 575 | static ypresp_order res; |
| 576 | static char *order_key = YP_LAST_KEY"YP_LAST_MODIFIED"; |
| 577 | char order[MAX_LAST_LEN10+1]; |
| 578 | DBM *db; |
| 579 | datum k, v; |
| 580 | |
| 581 | bzero(&res, sizeof(res)); |
| 582 | db = ypdb_open_db(domain, map, &res.stat, NULL0); |
| 583 | |
| 584 | if (res.stat >= 0) { |
| 585 | k.dptr = order_key; |
| 586 | k.dsize = YP_LAST_LEN(sizeof("YP_LAST_MODIFIED")-1); |
| 587 | |
| 588 | v = ypdb_fetch(db, k); |
| 589 | if (v.dptr == NULL0) { |
| 590 | res.stat = YP_NOKEY; |
| 591 | } else { |
| 592 | strncpy(order, v.dptr, v.dsize); |
| 593 | order[v.dsize] = '\0'; |
| 594 | res.ordernum = (u_int32_t)atol(order); |
| 595 | } |
| 596 | } |
| 597 | ypdb_close_db(db); |
| 598 | return (res); |
| 599 | } |
| 600 | |
| 601 | ypresp_master |
| 602 | ypdb_get_master(domainname domain, mapname map) |
| 603 | { |
| 604 | static ypresp_master res; |
| 605 | static char *master_key = YP_MASTER_KEY"YP_MASTER_NAME"; |
| 606 | static char master[MAX_MASTER_LEN255+1]; |
| 607 | DBM *db; |
| 608 | datum k, v; |
| 609 | |
| 610 | bzero(&res, sizeof(res)); |
| 611 | db = ypdb_open_db(domain, map, &res.stat, NULL0); |
| 612 | |
| 613 | if (res.stat >= 0) { |
| 614 | k.dptr = master_key; |
| 615 | k.dsize = YP_MASTER_LEN(sizeof("YP_MASTER_NAME")-1); |
| 616 | |
| 617 | v = ypdb_fetch(db, k); |
| 618 | if (v.dptr == NULL0) { |
| 619 | res.stat = YP_NOKEY; |
| 620 | } else { |
| 621 | strncpy(master, v.dptr, v.dsize); |
| 622 | master[v.dsize] = '\0'; |
| 623 | res.peer = (peername) &master; |
| 624 | } |
| 625 | } |
| 626 | ypdb_close_db(db); |
| 627 | return (res); |
| 628 | } |
| 629 | |
| 630 | bool_tint32_t |
| 631 | ypdb_xdr_get_all(XDR *xdrs, ypreq_nokey *req) |
| 632 | { |
| 633 | static ypresp_all resp; |
| 634 | DBM *db; |
| 635 | datum k, v; |
| 636 | |
| 637 | bzero(&resp, sizeof(resp)); |
| 638 | |
| 639 | /* |
| 640 | * open db, and advance past any private keys we may see |
| 641 | */ |
| 642 | db = ypdb_open_db(req->domain, req->map, |
| 643 | &resp.ypresp_all_u.val.stat, NULL0); |
| 644 | if (!db || resp.ypresp_all_u.val.stat < 0) |
| 645 | return(FALSE(0)); |
| 646 | k = ypdb_firstkey(db); |
| 647 | while (yp_private(k, FALSE(0))) |
| 648 | k = ypdb_nextkey(db); |
| 649 | |
| 650 | while (1) { |
| 651 | if (k.dptr == NULL0) |
| 652 | break; |
| 653 | |
| 654 | v = ypdb_fetch(db, k); |
| 655 | if (v.dptr == NULL0) |
| 656 | break; |
| 657 | |
| 658 | resp.more = TRUE(1); |
| 659 | resp.ypresp_all_u.val.stat = YP_TRUE; |
| 660 | resp.ypresp_all_u.val.key.keydat_val = k.dptr; |
| 661 | resp.ypresp_all_u.val.key.keydat_len = k.dsize; |
| 662 | resp.ypresp_all_u.val.val.valdat_val = v.dptr; |
| 663 | resp.ypresp_all_u.val.val.valdat_len = v.dsize; |
| 664 | |
| 665 | if (!xdr_ypresp_all(xdrs, &resp)) { |
| 666 | #ifdef DEBUG |
| 667 | yplog(" ypdb_xdr_get_all: xdr_ypresp_all failed"); |
| 668 | #endif |
| 669 | return(FALSE(0)); |
| 670 | } |
| 671 | |
| 672 | /* advance past private keys */ |
| 673 | k = ypdb_nextkey(db); |
| 674 | while (yp_private(k, FALSE(0))) |
| 675 | k = ypdb_nextkey(db); |
| 676 | } |
| 677 | |
| 678 | bzero(&resp, sizeof(resp)); |
| 679 | resp.ypresp_all_u.val.stat = YP_NOKEY; |
| 680 | resp.more = FALSE(0); |
| 681 | |
| 682 | if (!xdr_ypresp_all(xdrs, &resp)) { |
| 683 | #ifdef DEBUG |
| 684 | yplog(" ypdb_xdr_get_all: final xdr_ypresp_all failed"); |
| 685 | #endif |
| 686 | return(FALSE(0)); |
| 687 | } |
| 688 | ypdb_close_db(db); |
| 689 | return (TRUE(1)); |
| 690 | } |
| 691 | |
| 692 | int |
| 693 | ypdb_secure(domainname domain, mapname map) |
| 694 | { |
| 695 | static ypresp_val res; |
| 696 | DBM *db; |
| 697 | int secure; |
| 698 | struct opt_map *map_info = NULL0; |
| 699 | |
| 700 | bzero(&res, sizeof(res)); |
| 701 | secure = FALSE(0); |
| 702 | |
| 703 | db = ypdb_open_db(domain, map, &res.stat, &map_info); |
| 704 | if (!db || res.stat < 0) |
| 705 | return(secure); /* ? */ |
| 706 | if (map_info) |
| 707 | secure = map_info->secure; |
| 708 | |
| 709 | ypdb_close_db(db); |
| 710 | return(secure); |
| 711 | } |