ypxfr.c revision 1.9
1 /* $NetBSD: ypxfr.c,v 1.9 1999/07/25 09:36:02 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 1.9 1999/07/25 09:36:02 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(__progname, 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 syslog(LOG_DEBUG, "Get Master"); 189 190 if (host == NULL) { 191 if (srcdomain == NULL) 192 status = yp_master(domain, map, &host); 193 else 194 status = yp_master(srcdomain, map, &host); 195 196 if (status == 0) 197 status = YPPUSH_SUCC; 198 else { 199 status = -status; 200 goto punt; 201 } 202 } 203 204 syslog(LOG_DEBUG, "Connect host: %s", host); 205 206 client = yp_bind_host(host, YPPROG, YPVERS, 0, 1); 207 208 status = get_remote_ordernum(client, domain, map, ordernum, 209 &new_ordernum); 210 211 212 if (status == YPPUSH_SUCC) { 213 /* Create temporary db */ 214 mktemp(mapname); 215 db = create_db(domain, map, mapname); 216 if (db == NULL) 217 status = YPPUSH_DBM; 218 219 /* Add ORDER */ 220 if (status > 0) 221 status = add_order(db, new_ordernum); 222 223 /* Add MASTER */ 224 if (status > 0) 225 status = add_master(client, domain, map, db); 226 227 /* Add INTERDOMAIN */ 228 if (status > 0) 229 status = add_interdomain(client, domain, map, db); 230 231 /* Add SECURE */ 232 if (status > 0) 233 status = add_secure(client, domain, map, db); 234 235 if (status > 0) { 236 callback.foreach = ypxfr_foreach; 237 get_map(client, domain, map, &callback); 238 } 239 240 /* Close db */ 241 if (db != NULL) 242 ypdb_close(db); 243 244 /* Rename db */ 245 if (status > 0) 246 status = install_db(domain, map, mapname); 247 else 248 status = unlink_db(domain, map, mapname); 249 } 250 251 punt: 252 xfr_status = status; 253 254 if (client != NULL) 255 clnt_destroy(client); 256 257 /* YP_CLEAR */ 258 if (!cflag) { 259 client = yp_bind_local(YPPROG, YPVERS); 260 status = send_clear(client); 261 clnt_destroy(client); 262 } 263 264 if (Cflag > 0) { 265 /* Send Response */ 266 client = yp_bind_host(ipadd, atoi(prog), 1, atoi(port), 0); 267 status = send_reply(client, xfr_status, atoi(tid)); 268 clnt_destroy(client); 269 } 270 271 exit (0); 272 } 273 274 static int 275 ypxfr_foreach(status, keystr, keylen, valstr, vallen, data) 276 int status; 277 char *keystr; 278 int keylen; 279 char *valstr; 280 int vallen; 281 char *data; 282 { 283 datum key, val; 284 285 if (status == YP_NOMORE) 286 return (0); 287 288 keystr[keylen] = '\0'; 289 valstr[vallen] = '\0'; 290 291 key.dptr = keystr; 292 key.dsize = strlen(keystr); 293 294 val.dptr = valstr; 295 val.dsize = strlen(valstr); 296 297 ypdb_store(db, key, val, YPDB_INSERT); 298 299 return (0); 300 } 301 302 int 303 get_local_ordernum(domain, map, lordernum) 304 char *domain, *map; 305 u_int *lordernum; 306 { 307 char map_path[1024]; 308 char order_key[] = YP_LAST_KEY; 309 char order[MAX_LAST_LEN+1]; 310 struct stat finfo; 311 DBM *db; 312 datum k, v; 313 int status; 314 315 status = YPPUSH_SUCC; 316 317 snprintf(map_path, sizeof(map_path), "%s/%s", YP_DB_PATH, domain); 318 map_path[sizeof(map_path) - 1] = '\0'; 319 320 /* Make sure we serve the domain. */ 321 if ((stat(map_path, &finfo)) != 0 || 322 (S_ISDIR(finfo.st_mode) == 0)) { 323 warnx("domain `%s' not found locally", domain); 324 status = YPPUSH_NODOM; 325 goto out; 326 } 327 328 /* Make sure we serve the map. */ 329 snprintf(map_path, sizeof(map_path), "%s/%s/%s%s", 330 YP_DB_PATH, domain, map, YPDB_SUFFIX); 331 map_path[sizeof(map_path) - 1] = '\0'; 332 if (stat(map_path, &finfo) != 0) { 333 status = YPPUSH_NOMAP; 334 goto out; 335 } 336 337 /* Open the map file. */ 338 snprintf(map_path, sizeof(map_path), "%s/%s/%s", 339 YP_DB_PATH, domain, map); 340 map_path[sizeof(map_path) - 1] = '\0'; 341 db = ypdb_open(map_path, O_RDONLY, 0444); 342 if (db == NULL) { 343 status = YPPUSH_DBM; 344 goto out; 345 } 346 347 k.dptr = (char *)&order_key; 348 k.dsize = YP_LAST_LEN; 349 350 v = ypdb_fetch(db, k); 351 352 if (v.dptr == NULL) 353 *lordernum = 0; 354 else { 355 strncpy(order, v.dptr, v.dsize); 356 order[v.dsize] = '\0'; 357 *lordernum = (u_int)atoi((char *)&order); 358 } 359 ypdb_close(db); 360 361 out: 362 if ((status == YPPUSH_NOMAP) || (status == YPPUSH_DBM)) { 363 *lordernum = 0; 364 status = YPPUSH_SUCC; 365 } 366 367 return (status); 368 } 369 370 int 371 get_remote_ordernum(client, domain, map, lordernum, rordernum) 372 CLIENT *client; 373 char *domain, *map; 374 u_int lordernum, *rordernum; 375 { 376 int status; 377 378 status = yp_order_host(client, domain, map, (int *)rordernum); 379 380 if (status == 0) { 381 if (*rordernum <= lordernum) 382 status = YPPUSH_AGE; 383 else 384 status = YPPUSH_SUCC; 385 } 386 387 return status; 388 } 389 390 void 391 get_map(client, domain, map, incallback) 392 CLIENT *client; 393 char *domain, *map; 394 struct ypall_callback *incallback; 395 { 396 397 (void)yp_all_host(client, domain, map, incallback); 398 } 399 400 DBM * 401 create_db(domain, map, temp_map) 402 char *domain, *map, *temp_map; 403 { 404 char db_temp[255]; 405 DBM *db; 406 407 snprintf(db_temp, sizeof(db_temp), "%s/%s/%s", 408 YP_DB_PATH, domain, temp_map); 409 db_temp[sizeof(db_temp) - 1] = '\0'; 410 411 db = ypdb_open(db_temp, O_RDWR|O_CREAT|O_EXCL, 0444); 412 413 return db; 414 } 415 416 int 417 install_db(domain, map, temp_map) 418 char *domain, *map, *temp_map; 419 { 420 char db_name[255], db_temp[255]; 421 422 snprintf(db_name, sizeof(db_name), "%s/%s/%s%s", 423 YP_DB_PATH, domain, map, YPDB_SUFFIX); 424 db_name[sizeof(db_name) - 1] = '\0'; 425 426 snprintf(db_temp, sizeof(db_temp), "%s/%s/%s%s", 427 YP_DB_PATH, domain, temp_map, YPDB_SUFFIX); 428 db_temp[sizeof(db_temp) - 1] = '\0'; 429 430 if (rename(db_temp, db_name)) { 431 warn("can't rename `%s' -> `%s'", db_temp, db_name); 432 return YPPUSH_YPERR; 433 } 434 435 return YPPUSH_SUCC; 436 } 437 438 int 439 unlink_db(domain, map, temp_map) 440 char *domain, *map, *temp_map; 441 { 442 char db_temp[255]; 443 444 snprintf(db_temp, sizeof(db_temp), "%s/%s/%s%s", 445 YP_DB_PATH, domain, temp_map, YPDB_SUFFIX); 446 db_temp[sizeof(db_temp) - 1] = '\0'; 447 448 if (unlink(db_temp)) { 449 warn("can't unlink `%s'", db_temp); 450 return YPPUSH_YPERR; 451 } 452 453 return YPPUSH_SUCC; 454 } 455 456 int 457 add_order(db, ordernum) 458 DBM *db; 459 u_int ordernum; 460 { 461 char datestr[11]; 462 datum key, val; 463 char keystr[] = YP_LAST_KEY; 464 int status; 465 466 snprintf(datestr, sizeof(datestr), "%010d", ordernum); 467 datestr[sizeof(datestr) - 1] = '\0'; 468 469 key.dptr = keystr; 470 key.dsize = strlen(keystr); 471 472 val.dptr = datestr; 473 val.dsize = strlen(datestr); 474 475 status = ypdb_store(db, key, val, YPDB_INSERT); 476 if(status >= 0) 477 status = YPPUSH_SUCC; 478 else 479 status = YPPUSH_DBM; 480 481 return (status); 482 } 483 484 int 485 add_master(client, domain, map, db) 486 CLIENT *client; 487 char *domain, *map; 488 DBM *db; 489 { 490 char keystr[] = YP_MASTER_KEY; 491 char *master; 492 int status; 493 datum key, val; 494 495 master = NULL; 496 497 /* Get MASTER */ 498 status = yp_master_host(client, domain, map, &master); 499 500 if (master != NULL) { 501 key.dptr = keystr; 502 key.dsize = strlen(keystr); 503 504 val.dptr = master; 505 val.dsize = strlen(master); 506 507 status = ypdb_store(db, key, val, YPDB_INSERT); 508 if (status >= 0) 509 status = YPPUSH_SUCC; 510 else 511 status = YPPUSH_DBM; 512 } 513 514 return status; 515 } 516 517 int 518 add_interdomain(client, domain, map, db) 519 CLIENT *client; 520 char *domain, *map; 521 DBM *db; 522 { 523 char keystr[] = YP_INTERDOMAIN_KEY; 524 char *value; 525 int vallen; 526 int status; 527 datum k, v; 528 529 /* Get INTERDOMAIN */ 530 k.dptr = keystr; 531 k.dsize = strlen(keystr); 532 533 status = yp_match_host(client, domain, map, 534 k.dptr, k.dsize, &value, &vallen); 535 536 if (status == 0 && value) { 537 v.dptr = value; 538 v.dsize = vallen; 539 540 if (v.dptr != NULL) { 541 status = ypdb_store(db, k, v, YPDB_INSERT); 542 if (status >= 0) 543 status = YPPUSH_SUCC; 544 else 545 status = YPPUSH_DBM; 546 } 547 } 548 549 return status; 550 } 551 552 int 553 add_secure(client, domain, map, db) 554 CLIENT *client; 555 char *domain, *map; 556 DBM *db; 557 { 558 char keystr[] = YP_SECURE_KEY; 559 char *value; 560 int vallen; 561 int status; 562 datum k, v; 563 564 /* Get SECURE */ 565 k.dptr = keystr; 566 k.dsize = strlen(keystr); 567 568 status = yp_match_host(client, domain, map, 569 k.dptr, k.dsize, &value, &vallen); 570 571 if (status > 0) { 572 v.dptr = value; 573 v.dsize = vallen; 574 575 if (v.dptr != NULL) { 576 status = ypdb_store(db, k, v, YPDB_INSERT); 577 if (status >= 0) 578 status = YPPUSH_SUCC; 579 else 580 status = YPPUSH_DBM; 581 } 582 } 583 584 return status; 585 } 586 587 int 588 send_clear(client) 589 CLIENT *client; 590 { 591 struct timeval tv; 592 int r; 593 int status; 594 595 status = YPPUSH_SUCC; 596 597 tv.tv_sec = 10; 598 tv.tv_usec = 0; 599 600 /* Send CLEAR */ 601 r = clnt_call(client, YPPROC_CLEAR, xdr_void, 0, xdr_void, 0, tv); 602 if (r != RPC_SUCCESS) { 603 clnt_perror(client, "yp_clear: clnt_call"); 604 status = YPPUSH_RPC; 605 } 606 607 return status; 608 } 609 610 int 611 send_reply(client, status, tid) 612 CLIENT *client; 613 int status, tid; 614 { 615 struct timeval tv; 616 struct ypresp_xfr resp; 617 int r; 618 619 tv.tv_sec = 10; 620 tv.tv_usec = 0; 621 622 resp.transid = tid; 623 resp.xfrstat = status; 624 625 /* Send XFRRESP */ 626 r = clnt_call(client, YPPUSHPROC_XFRRESP, xdr_ypresp_xfr, &resp, 627 xdr_void, 0, tv); 628 if (r != RPC_SUCCESS) { 629 clnt_perror(client, "yppushresp_xdr: clnt_call"); 630 status = YPPUSH_RPC; 631 } 632 633 return status; 634 } 635
Indexes created Sun Oct 12 09:09:55 GMT 2025