ypxfr.c revision 1.10
1 /* $NetBSD: ypxfr.c,v 1.10 2001/01/11 00:35:49 lukem Exp $ */ 2 3 /* 4 * Copyright (c) 1994 Mats O Jansson <moj (at) stacken.kth.se> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Mats O Jansson 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 22 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 23 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 25 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #include <sys/cdefs.h> 35 #ifndef lint 36 __RCSID("$NetBSD: ypxfr.c,v 1.10 2001/01/11 00:35:49 lukem Exp $"); 37 #endif 38 39 #include <sys/types.h> 40 #include <sys/stat.h> 41 #include <sys/socket.h> 42 43 #include <netinet/in.h> 44 #include <arpa/inet.h> 45 46 #include <err.h> 47 #include <fcntl.h> 48 #include <netdb.h> 49 #include <string.h> 50 #include <stdio.h> 51 #include <stdlib.h> 52 #include <syslog.h> 53 #include <unistd.h> 54 55 #include <rpc/rpc.h> 56 #include <rpc/xdr.h> 57 #include <rpcsvc/yp_prot.h> 58 #include <rpcsvc/ypclnt.h> 59 60 #include "yplib_host.h" 61 #include "ypdb.h" 62 #include "ypdef.h" 63 64 extern char *__progname; /* from crt0.o */ 65 66 DBM *db; 67 68 static int ypxfr_foreach __P((int, char *, int, char *, int, char *)); 69 70 int main __P((int, char *[])); 71 int get_local_ordernum __P((char *, char *, u_int *)); 72 int get_remote_ordernum __P((CLIENT *, char *, char *, u_int, u_int *)); 73 void get_map __P((CLIENT *, char *, char *, struct ypall_callback *)); 74 DBM *create_db __P((char *, char *, char *)); 75 int install_db __P((char *, char *, char *)); 76 int unlink_db __P((char *, char *, char *)); 77 int add_order __P((DBM *, u_int)); 78 int add_master __P((CLIENT *, char *, char *, DBM *)); 79 int add_interdomain __P((CLIENT *, char *, char *, DBM *)); 80 int add_secure __P((CLIENT *, char *, char *, DBM *)); 81 int send_clear __P((CLIENT *)); 82 int send_reply __P((CLIENT *, int, int)); 83 84 int 85 main(argc, argv) 86 int argc; 87 char *argv[]; 88 { 89 int need_usage = 0, cflag = 0, fflag = 0, Cflag = 0; 90 int ch; 91 char *domain; 92 char *host = NULL; 93 char *srcdomain = NULL; 94 char *tid = NULL; 95 char *prog = NULL; 96 char *ipadd = NULL; 97 char *port = NULL; 98 char *map = NULL; 99 u_int ordernum, new_ordernum; 100 struct ypall_callback callback; 101 CLIENT *client; 102 char mapname[] = "ypdbXXXXXX"; 103 int status, xfr_status; 104 105 status = YPPUSH_SUCC; 106 client = NULL; 107 108 if (yp_get_default_domain(&domain)) 109 errx(1, "can't get YP domain name"); 110 111 while ((ch = getopt(argc, argv, "cd:fh:s:C:")) != -1) { 112 switch (ch) { 113 case 'c': 114 cflag = 1; 115 break; 116 117 case 'd': 118 domain = optarg; 119 break; 120 121 case 'f': 122 fflag = 1; 123 break; 124 125 case 'h': 126 host = optarg; 127 break; 128 129 case 's': 130 srcdomain = optarg; 131 break; 132 133 case 'C': 134 if (optind + 3 >= argc) { 135 need_usage = 1; 136 optind = argc; 137 break; 138 } 139 Cflag = 1; 140 tid = optarg; 141 prog = argv[optind++]; 142 ipadd = argv[optind++]; 143 port = argv[optind++]; 144 break; 145 146 default: 147 need_usage = 1; 148 } 149 } 150 argc -= optind; argv += optind; 151 152 if (argc != 1) 153 need_usage = 1; 154 155 map = argv[0]; 156 157 if (need_usage) { 158 status = YPPUSH_BADARGS; 159 fprintf(stderr, "usage: %s [-cf] [-d domain] [-h host] %s\n", 160 __progname, "[-s domain] [-C tid prog ipadd port] mapname"); 161 goto punt; 162 } 163 164 #ifdef DEBUG 165 openlog("ypxfr", LOG_PID, LOG_DAEMON); 166 167 syslog(LOG_DEBUG, "ypxfr: Arguments:"); 168 syslog(LOG_DEBUG, "YP clear to local: %s", (cflag) ? "no" : "yes"); 169 syslog(LOG_DEBUG, " Force transfer: %s", (fflag) ? "yes" : "no"); 170 syslog(LOG_DEBUG, " domain: %s", domain); 171 syslog(LOG_DEBUG, " host: %s", host); 172 syslog(LOG_DEBUG, " source domain: %s", srcdomain); 173 syslog(LOG_DEBUG, " transid: %s", tid); 174 syslog(LOG_DEBUG, " prog: %s", prog); 175 syslog(LOG_DEBUG, " port: %s", port); 176 syslog(LOG_DEBUG, " ipadd: %s", ipadd); 177 syslog(LOG_DEBUG, " map: %s", map); 178 #endif 179 180 if (fflag != 0) 181 ordernum = 0; 182 else { 183 status = get_local_ordernum(domain, map, &ordernum); 184 if (status < 0) 185 goto punt; 186 } 187 188 #ifdef DEBUG 189 syslog(LOG_DEBUG, "Get Master"); 190 #endif 191 192 if (host == NULL) { 193 if (srcdomain == NULL) 194 status = yp_master(domain, map, &host); 195 else 196 status = yp_master(srcdomain, map, &host); 197 198 if (status == 0) 199 status = YPPUSH_SUCC; 200 else { 201 status = -status; 202 goto punt; 203 } 204 } 205 206 #ifdef DEBUG 207 syslog(LOG_DEBUG, "Connect host: %s", host); 208 #endif 209 210 client = yp_bind_host(host, YPPROG, YPVERS, 0, 1); 211 212 status = get_remote_ordernum(client, domain, map, ordernum, 213 &new_ordernum); 214 215 216 if (status == YPPUSH_SUCC) { 217 /* Create temporary db */ 218 mktemp(mapname); 219 db = create_db(domain, map, mapname); 220 if (db == NULL) 221 status = YPPUSH_DBM; 222 223 /* Add ORDER */ 224 if (status > 0) 225 status = add_order(db, new_ordernum); 226 227 /* Add MASTER */ 228 if (status > 0) 229 status = add_master(client, domain, map, db); 230 231 /* Add INTERDOMAIN */ 232 if (status > 0) 233 status = add_interdomain(client, domain, map, db); 234 235 /* Add SECURE */ 236 if (status > 0) 237 status = add_secure(client, domain, map, db); 238 239 if (status > 0) { 240 callback.foreach = ypxfr_foreach; 241 get_map(client, domain, map, &callback); 242 } 243 244 /* Close db */ 245 if (db != NULL) 246 ypdb_close(db); 247 248 /* Rename db */ 249 if (status > 0) 250 status = install_db(domain, map, mapname); 251 else 252 status = unlink_db(domain, map, mapname); 253 } 254 255 punt: 256 xfr_status = status; 257 258 if (client != NULL) 259 clnt_destroy(client); 260 261 /* YP_CLEAR */ 262 if (!cflag) { 263 client = yp_bind_local(YPPROG, YPVERS); 264 status = send_clear(client); 265 clnt_destroy(client); 266 } 267 268 if (Cflag > 0) { 269 /* Send Response */ 270 client = yp_bind_host(ipadd, atoi(prog), 1, atoi(port), 0); 271 status = send_reply(client, xfr_status, atoi(tid)); 272 clnt_destroy(client); 273 } 274 275 exit (0); 276 } 277 278 static int 279 ypxfr_foreach(status, keystr, keylen, valstr, vallen, data) 280 int status; 281 char *keystr; 282 int keylen; 283 char *valstr; 284 int vallen; 285 char *data; 286 { 287 datum key, val; 288 289 if (status == YP_NOMORE) 290 return (0); 291 292 keystr[keylen] = '\0'; 293 valstr[vallen] = '\0'; 294 295 key.dptr = keystr; 296 key.dsize = strlen(keystr); 297 298 val.dptr = valstr; 299 val.dsize = strlen(valstr); 300 301 ypdb_store(db, key, val, YPDB_INSERT); 302 303 return (0); 304 } 305 306 int 307 get_local_ordernum(domain, map, lordernum) 308 char *domain, *map; 309 u_int *lordernum; 310 { 311 char map_path[1024]; 312 char order_key[] = YP_LAST_KEY; 313 char order[MAX_LAST_LEN+1]; 314 struct stat finfo; 315 DBM *db; 316 datum k, v; 317 int status; 318 319 status = YPPUSH_SUCC; 320 321 snprintf(map_path, sizeof(map_path), "%s/%s", YP_DB_PATH, domain); 322 map_path[sizeof(map_path) - 1] = '\0'; 323 324 /* Make sure we serve the domain. */ 325 if ((stat(map_path, &finfo)) != 0 || 326 (S_ISDIR(finfo.st_mode) == 0)) { 327 warnx("domain `%s' not found locally", domain); 328 status = YPPUSH_NODOM; 329 goto out; 330 } 331 332 /* Make sure we serve the map. */ 333 snprintf(map_path, sizeof(map_path), "%s/%s/%s%s", 334 YP_DB_PATH, domain, map, YPDB_SUFFIX); 335 map_path[sizeof(map_path) - 1] = '\0'; 336 if (stat(map_path, &finfo) != 0) { 337 status = YPPUSH_NOMAP; 338 goto out; 339 } 340 341 /* Open the map file. */ 342 snprintf(map_path, sizeof(map_path), "%s/%s/%s", 343 YP_DB_PATH, domain, map); 344 map_path[sizeof(map_path) - 1] = '\0'; 345 db = ypdb_open(map_path, O_RDONLY, 0444); 346 if (db == NULL) { 347 status = YPPUSH_DBM; 348 goto out; 349 } 350 351 k.dptr = (char *)&order_key; 352 k.dsize = YP_LAST_LEN; 353 354 v = ypdb_fetch(db, k); 355 356 if (v.dptr == NULL) 357 *lordernum = 0; 358 else { 359 strncpy(order, v.dptr, v.dsize); 360 order[v.dsize] = '\0'; 361 *lordernum = (u_int)atoi((char *)&order); 362 } 363 ypdb_close(db); 364 365 out: 366 if ((status == YPPUSH_NOMAP) || (status == YPPUSH_DBM)) { 367 *lordernum = 0; 368 status = YPPUSH_SUCC; 369 } 370 371 return (status); 372 } 373 374 int 375 get_remote_ordernum(client, domain, map, lordernum, rordernum) 376 CLIENT *client; 377 char *domain, *map; 378 u_int lordernum, *rordernum; 379 { 380 int status; 381 382 status = yp_order_host(client, domain, map, (int *)rordernum); 383 384 if (status == 0) { 385 if (*rordernum <= lordernum) 386 status = YPPUSH_AGE; 387 else 388 status = YPPUSH_SUCC; 389 } 390 391 return status; 392 } 393 394 void 395 get_map(client, domain, map, incallback) 396 CLIENT *client; 397 char *domain, *map; 398 struct ypall_callback *incallback; 399 { 400 401 (void)yp_all_host(client, domain, map, incallback); 402 } 403 404 DBM * 405 create_db(domain, map, temp_map) 406 char *domain, *map, *temp_map; 407 { 408 char db_temp[255]; 409 DBM *db; 410 411 snprintf(db_temp, sizeof(db_temp), "%s/%s/%s", 412 YP_DB_PATH, domain, temp_map); 413 db_temp[sizeof(db_temp) - 1] = '\0'; 414 415 db = ypdb_open(db_temp, O_RDWR|O_CREAT|O_EXCL, 0444); 416 417 return db; 418 } 419 420 int 421 install_db(domain, map, temp_map) 422 char *domain, *map, *temp_map; 423 { 424 char db_name[255], db_temp[255]; 425 426 snprintf(db_name, sizeof(db_name), "%s/%s/%s%s", 427 YP_DB_PATH, domain, map, YPDB_SUFFIX); 428 db_name[sizeof(db_name) - 1] = '\0'; 429 430 snprintf(db_temp, sizeof(db_temp), "%s/%s/%s%s", 431 YP_DB_PATH, domain, temp_map, YPDB_SUFFIX); 432 db_temp[sizeof(db_temp) - 1] = '\0'; 433 434 if (rename(db_temp, db_name)) { 435 warn("can't rename `%s' -> `%s'", db_temp, db_name); 436 return YPPUSH_YPERR; 437 } 438 439 return YPPUSH_SUCC; 440 } 441 442 int 443 unlink_db(domain, map, temp_map) 444 char *domain, *map, *temp_map; 445 { 446 char db_temp[255]; 447 448 snprintf(db_temp, sizeof(db_temp), "%s/%s/%s%s", 449 YP_DB_PATH, domain, temp_map, YPDB_SUFFIX); 450 db_temp[sizeof(db_temp) - 1] = '\0'; 451 452 if (unlink(db_temp)) { 453 warn("can't unlink `%s'", db_temp); 454 return YPPUSH_YPERR; 455 } 456 457 return YPPUSH_SUCC; 458 } 459 460 int 461 add_order(db, ordernum) 462 DBM *db; 463 u_int ordernum; 464 { 465 char datestr[11]; 466 datum key, val; 467 char keystr[] = YP_LAST_KEY; 468 int status; 469 470 snprintf(datestr, sizeof(datestr), "%010d", ordernum); 471 datestr[sizeof(datestr) - 1] = '\0'; 472 473 key.dptr = keystr; 474 key.dsize = strlen(keystr); 475 476 val.dptr = datestr; 477 val.dsize = strlen(datestr); 478 479 status = ypdb_store(db, key, val, YPDB_INSERT); 480 if(status >= 0) 481 status = YPPUSH_SUCC; 482 else 483 status = YPPUSH_DBM; 484 485 return (status); 486 } 487 488 int 489 add_master(client, domain, map, db) 490 CLIENT *client; 491 char *domain, *map; 492 DBM *db; 493 { 494 char keystr[] = YP_MASTER_KEY; 495 char *master; 496 int status; 497 datum key, val; 498 499 master = NULL; 500 501 /* Get MASTER */ 502 status = yp_master_host(client, domain, map, &master); 503 504 if (master != NULL) { 505 key.dptr = keystr; 506 key.dsize = strlen(keystr); 507 508 val.dptr = master; 509 val.dsize = strlen(master); 510 511 status = ypdb_store(db, key, val, YPDB_INSERT); 512 if (status >= 0) 513 status = YPPUSH_SUCC; 514 else 515 status = YPPUSH_DBM; 516 } 517 518 return status; 519 } 520 521 int 522 add_interdomain(client, domain, map, db) 523 CLIENT *client; 524 char *domain, *map; 525 DBM *db; 526 { 527 char keystr[] = YP_INTERDOMAIN_KEY; 528 char *value; 529 int vallen; 530 int status; 531 datum k, v; 532 533 /* Get INTERDOMAIN */ 534 k.dptr = keystr; 535 k.dsize = strlen(keystr); 536 537 status = yp_match_host(client, domain, map, 538 k.dptr, k.dsize, &value, &vallen); 539 540 if (status == 0 && value) { 541 v.dptr = value; 542 v.dsize = vallen; 543 544 if (v.dptr != NULL) { 545 status = ypdb_store(db, k, v, YPDB_INSERT); 546 if (status >= 0) 547 status = YPPUSH_SUCC; 548 else 549 status = YPPUSH_DBM; 550 } 551 } 552 553 return status; 554 } 555 556 int 557 add_secure(client, domain, map, db) 558 CLIENT *client; 559 char *domain, *map; 560 DBM *db; 561 { 562 char keystr[] = YP_SECURE_KEY; 563 char *value; 564 int vallen; 565 int status; 566 datum k, v; 567 568 /* Get SECURE */ 569 k.dptr = keystr; 570 k.dsize = strlen(keystr); 571 572 status = yp_match_host(client, domain, map, 573 k.dptr, k.dsize, &value, &vallen); 574 575 if (status > 0) { 576 v.dptr = value; 577 v.dsize = vallen; 578 579 if (v.dptr != NULL) { 580 status = ypdb_store(db, k, v, YPDB_INSERT); 581 if (status >= 0) 582 status = YPPUSH_SUCC; 583 else 584 status = YPPUSH_DBM; 585 } 586 } 587 588 return status; 589 } 590 591 int 592 send_clear(client) 593 CLIENT *client; 594 { 595 struct timeval tv; 596 int r; 597 int status; 598 599 status = YPPUSH_SUCC; 600 601 tv.tv_sec = 10; 602 tv.tv_usec = 0; 603 604 /* Send CLEAR */ 605 r = clnt_call(client, YPPROC_CLEAR, xdr_void, 0, xdr_void, 0, tv); 606 if (r != RPC_SUCCESS) { 607 clnt_perror(client, "yp_clear: clnt_call"); 608 status = YPPUSH_RPC; 609 } 610 611 return status; 612 } 613 614 int 615 send_reply(client, status, tid) 616 CLIENT *client; 617 int status, tid; 618 { 619 struct timeval tv; 620 struct ypresp_xfr resp; 621 int r; 622 623 tv.tv_sec = 10; 624 tv.tv_usec = 0; 625 626 resp.transid = tid; 627 resp.xfrstat = status; 628 629 /* Send XFRRESP */ 630 r = clnt_call(client, YPPUSHPROC_XFRRESP, xdr_ypresp_xfr, &resp, 631 xdr_void, 0, tv); 632 if (r != RPC_SUCCESS) { 633 clnt_perror(client, "yppushresp_xdr: clnt_call"); 634 status = YPPUSH_RPC; 635 } 636 637 return status; 638 } 639
Indexes created Mon Oct 13 01:09:56 GMT 2025