ypxfr.c revision 1.5
1 /* $NetBSD: ypxfr.c,v 1.5 1997/10/07 15:00:35 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/types.h> 35 #include <sys/stat.h> 36 #include <sys/socket.h> 37 38 #include <netinet/in.h> 39 #include <arpa/inet.h> 40 41 #include <err.h> 42 #include <fcntl.h> 43 #include <netdb.h> 44 #include <string.h> 45 #include <stdio.h> 46 #include <stdlib.h> 47 #include <unistd.h> 48 49 #include <rpc/rpc.h> 50 #include <rpc/xdr.h> 51 #include <rpcsvc/yp_prot.h> 52 #include <rpcsvc/ypclnt.h> 53 54 #include "yplib_host.h" 55 #include "yplog.h" 56 #include "ypdb.h" 57 #include "ypdef.h" 58 59 extern char *__progname; /* from crt0.o */ 60 61 DBM *db; 62 63 static int ypxfr_foreach __P((int, char *, int, char *, int, char *)); 64 65 int main __P((int, char *[])); 66 int get_local_ordernum __P((char *, char *, u_int *)); 67 int get_remote_ordernum __P((CLIENT *, char *, char *, u_int, u_int *)); 68 void get_map __P((CLIENT *, char *, char *, struct ypall_callback *)); 69 DBM *create_db __P((char *, char *, char *)); 70 int install_db __P((char *, char *, char *)); 71 int unlink_db __P((char *, char *, char *)); 72 int add_order __P((DBM *, u_int)); 73 int add_master __P((CLIENT *, char *, char *, DBM *)); 74 int add_interdomain __P((CLIENT *, char *, char *, DBM *)); 75 int add_secure __P((CLIENT *, char *, char *, DBM *)); 76 int send_clear __P((CLIENT *)); 77 int send_reply __P((CLIENT *, int, int)); 78 79 int 80 main(argc, argv) 81 int argc; 82 char *argv[]; 83 { 84 int need_usage = 0, cflag = 0, fflag = 0, Cflag = 0; 85 int ch; 86 char *domain; 87 char *host = NULL; 88 char *srcdomain = NULL; 89 char *tid = NULL; 90 char *prog = NULL; 91 char *ipadd = NULL; 92 char *port = NULL; 93 char *map = NULL; 94 u_int ordernum, new_ordernum; 95 struct ypall_callback callback; 96 CLIENT *client; 97 char mapname[] = "ypdbXXXXXX"; 98 int status, xfr_status; 99 100 status = YPPUSH_SUCC; 101 client = NULL; 102 103 if (yp_get_default_domain(&domain)) 104 errx(1, "can't get YP domain name"); 105 106 while ((ch = getopt(argc, argv, "cd:fh:s:C:")) != -1) { 107 switch (ch) { 108 case 'c': 109 cflag = 1; 110 break; 111 112 case 'd': 113 domain = optarg; 114 break; 115 116 case 'f': 117 fflag = 1; 118 break; 119 120 case 'h': 121 host = optarg; 122 break; 123 124 case 's': 125 srcdomain = optarg; 126 break; 127 128 case 'C': 129 if (optind + 3 >= argc) { 130 need_usage = 1; 131 optind = argc; 132 break; 133 } 134 Cflag = 1; 135 tid = optarg; 136 prog = argv[optind++]; 137 ipadd = argv[optind++]; 138 port = argv[optind++]; 139 break; 140 141 default: 142 need_usage = 1; 143 } 144 } 145 argc -= optind; argv += optind; 146 147 if (argc != 1) 148 need_usage = 1; 149 150 map = argv[0]; 151 152 if (need_usage) { 153 status = YPPUSH_BADARGS; 154 fprintf(stderr, "usage: %s [-cf] [-d domain] [-h host] %s\n", 155 __progname, "[-s domain] [-C tid prog ipadd port] mapname"); 156 goto punt; 157 } 158 159 ypopenlog(); 160 161 yplog("ypxfr: Arguments:"); 162 yplog("YP clear to local: %s", (cflag) ? "no" : "yes"); 163 yplog(" Force transfer: %s", (fflag) ? "yes" : "no"); 164 yplog(" domain: %s", domain); 165 yplog(" host: %s", host); 166 yplog(" source domain: %s", srcdomain); 167 yplog(" transid: %s", tid); 168 yplog(" prog: %s", prog); 169 yplog(" port: %s", port); 170 yplog(" ipadd: %s", ipadd); 171 yplog(" map: %s", map); 172 173 if (fflag != 0) 174 ordernum = 0; 175 else { 176 status = get_local_ordernum(domain, map, &ordernum); 177 if (status < 0) 178 goto punt; 179 } 180 181 yplog("Get Master"); 182 183 if (host == NULL) { 184 if (srcdomain == NULL) 185 status = yp_master(domain, map, &host); 186 else 187 status = yp_master(srcdomain, map, &host); 188 189 if (status == 0) 190 status = YPPUSH_SUCC; 191 else { 192 status = -status; 193 goto punt; 194 } 195 } 196 197 yplog("Connect host: %s", host); 198 199 client = yp_bind_host(host, YPPROG, YPVERS, 0, 1); 200 201 status = get_remote_ordernum(client, domain, map, ordernum, 202 &new_ordernum); 203 204 205 if (status == YPPUSH_SUCC) { 206 /* Create temporary db */ 207 mktemp(mapname); 208 db = create_db(domain, map, mapname); 209 if (db == NULL) 210 status = YPPUSH_DBM; 211 212 /* Add ORDER */ 213 if (status > 0) 214 status = add_order(db, new_ordernum); 215 216 /* Add MASTER */ 217 if (status > 0) 218 status = add_master(client, domain, map, db); 219 220 /* Add INTERDOMAIN */ 221 if (status > 0) 222 status = add_interdomain(client, domain, map, db); 223 224 /* Add SECURE */ 225 if (status > 0) 226 status = add_secure(client, domain, map, db); 227 228 if (status > 0) { 229 callback.foreach = ypxfr_foreach; 230 get_map(client, domain, map, &callback); 231 } 232 233 /* Close db */ 234 if (db != NULL) 235 ypdb_close(db); 236 237 /* Rename db */ 238 if (status > 0) 239 status = install_db(domain, map, mapname); 240 else 241 status = unlink_db(domain, map, mapname); 242 } 243 244 punt: 245 xfr_status = status; 246 247 if (client != NULL) 248 clnt_destroy(client); 249 250 /* YP_CLEAR */ 251 if (!cflag) { 252 client = yp_bind_local(YPPROG, YPVERS); 253 status = send_clear(client); 254 clnt_destroy(client); 255 } 256 257 if (Cflag > 0) { 258 /* Send Response */ 259 client = yp_bind_host(ipadd, atoi(prog), 1, atoi(port), 0); 260 status = send_reply(client, xfr_status, atoi(tid)); 261 clnt_destroy(client); 262 } 263 264 exit (0); 265 } 266 267 static int 268 ypxfr_foreach(status, keystr, keylen, valstr, vallen, data) 269 int status; 270 char *keystr; 271 int keylen; 272 char *valstr; 273 int vallen; 274 char *data; 275 { 276 datum key, val; 277 278 if (status == YP_NOMORE) 279 return (0); 280 281 keystr[keylen] = '\0'; 282 valstr[vallen] = '\0'; 283 284 key.dptr = keystr; 285 key.dsize = strlen(keystr); 286 287 val.dptr = valstr; 288 val.dsize = strlen(valstr); 289 290 ypdb_store(db, key, val, YPDB_INSERT); 291 292 return (0); 293 } 294 295 int 296 get_local_ordernum(domain, map, lordernum) 297 char *domain, *map; 298 u_int *lordernum; 299 { 300 char map_path[1024]; 301 char order_key[] = YP_LAST_KEY; 302 char order[MAX_LAST_LEN+1]; 303 struct stat finfo; 304 DBM *db; 305 datum k, v; 306 int status; 307 308 status = YPPUSH_SUCC; 309 310 snprintf(map_path, sizeof(map_path), "%s/%s", YP_DB_PATH, domain); 311 map_path[sizeof(map_path) - 1] = '\0'; 312 313 /* Make sure we serve the domain. */ 314 if ((stat(map_path, &finfo)) != 0 || 315 (S_ISDIR(finfo.st_mode) == 0)) { 316 warnx("domain `%s' not found locally", domain); 317 status = YPPUSH_NODOM; 318 goto out; 319 } 320 321 /* Make sure we serve the map. */ 322 snprintf(map_path, sizeof(map_path), "%s/%s/%s%s", 323 YP_DB_PATH, domain, map, YPDB_SUFFIX); 324 map_path[sizeof(map_path) - 1] = '\0'; 325 if (stat(map_path, &finfo) != 0) { 326 status = YPPUSH_NOMAP; 327 goto out; 328 } 329 330 /* Open the map file. */ 331 snprintf(map_path, sizeof(map_path), "%s/%s/%s", 332 YP_DB_PATH, domain, map); 333 map_path[sizeof(map_path) - 1] = '\0'; 334 db = ypdb_open(map_path, O_RDONLY, 0444); 335 if (db == NULL) { 336 status = YPPUSH_DBM; 337 goto out; 338 } 339 340 k.dptr = (char *)&order_key; 341 k.dsize = YP_LAST_LEN; 342 343 v = ypdb_fetch(db, k); 344 ypdb_close(db); 345 346 if (v.dptr == NULL) 347 *lordernum = 0; 348 else { 349 strncpy(order, v.dptr, v.dsize); 350 order[v.dsize] = '\0'; 351 *lordernum = (u_int)atoi((char *)&order); 352 } 353 354 out: 355 if ((status == YPPUSH_NOMAP) || (status == YPPUSH_DBM)) { 356 *lordernum = 0; 357 status = YPPUSH_SUCC; 358 } 359 360 return (status); 361 } 362 363 int 364 get_remote_ordernum(client, domain, map, lordernum, rordernum) 365 CLIENT *client; 366 char *domain, *map; 367 u_int lordernum, *rordernum; 368 { 369 int status; 370 371 status = yp_order_host(client, domain, map, (int *)rordernum); 372 373 if (status == 0) 374 if (*rordernum <= lordernum) 375 status = YPPUSH_AGE; 376 else 377 status = YPPUSH_SUCC; 378 379 return status; 380 } 381 382 void 383 get_map(client, domain, map, incallback) 384 CLIENT *client; 385 char *domain, *map; 386 struct ypall_callback *incallback; 387 { 388 389 (void)yp_all_host(client, domain, map, incallback); 390 } 391 392 DBM * 393 create_db(domain, map, temp_map) 394 char *domain, *map, *temp_map; 395 { 396 char db_temp[255]; 397 DBM *db; 398 399 snprintf(db_temp, sizeof(db_temp), "%s/%s/%s", 400 YP_DB_PATH, domain, temp_map); 401 db_temp[sizeof(db_temp) - 1] = '\0'; 402 403 db = ypdb_open(db_temp, O_RDWR|O_CREAT|O_EXCL, 0444); 404 405 return db; 406 } 407 408 int 409 install_db(domain, map, temp_map) 410 char *domain, *map, *temp_map; 411 { 412 char db_name[255], db_temp[255]; 413 414 snprintf(db_name, sizeof(db_name), "%s/%s/%s%s", 415 YP_DB_PATH, domain, map, YPDB_SUFFIX); 416 db_name[sizeof(db_name) - 1] = '\0'; 417 418 snprintf(db_temp, sizeof(db_temp), "%s/%s/%s%s", 419 YP_DB_PATH, domain, temp_map, YPDB_SUFFIX); 420 db_temp[sizeof(db_temp) - 1] = '\0'; 421 422 if (rename(db_temp, db_name)) { 423 warn("can't rename `%s' -> `%s'", db_temp, db_name); 424 return YPPUSH_YPERR; 425 } 426 427 return YPPUSH_SUCC; 428 } 429 430 int 431 unlink_db(domain, map, temp_map) 432 char *domain, *map, *temp_map; 433 { 434 char db_temp[255]; 435 436 snprintf(db_temp, sizeof(db_temp), "%s/%s/%s%s", 437 YP_DB_PATH, domain, temp_map, YPDB_SUFFIX); 438 db_temp[sizeof(db_temp) - 1] = '\0'; 439 440 if (unlink(db_temp)) { 441 warn("can't unlink `%s'", db_temp); 442 return YPPUSH_YPERR; 443 } 444 445 return YPPUSH_SUCC; 446 } 447 448 int 449 add_order(db, ordernum) 450 DBM *db; 451 u_int ordernum; 452 { 453 char datestr[11]; 454 datum key, val; 455 char keystr[] = YP_LAST_KEY; 456 int status; 457 458 snprintf(datestr, sizeof(datestr), "%010d", ordernum); 459 datestr[sizeof(datestr) - 1] = '\0'; 460 461 key.dptr = keystr; 462 key.dsize = strlen(keystr); 463 464 val.dptr = datestr; 465 val.dsize = strlen(datestr); 466 467 status = ypdb_store(db, key, val, YPDB_INSERT); 468 if(status >= 0) 469 status = YPPUSH_SUCC; 470 else 471 status = YPPUSH_DBM; 472 473 return (status); 474 } 475 476 int 477 add_master(client, domain, map, db) 478 CLIENT *client; 479 char *domain, *map; 480 DBM *db; 481 { 482 char keystr[] = YP_MASTER_KEY; 483 char *master; 484 int status; 485 datum key, val; 486 487 master = NULL; 488 489 /* Get MASTER */ 490 status = yp_master_host(client, domain, map, &master); 491 492 if (master != NULL) { 493 key.dptr = keystr; 494 key.dsize = strlen(keystr); 495 496 val.dptr = master; 497 val.dsize = strlen(master); 498 499 status = ypdb_store(db, key, val, YPDB_INSERT); 500 if (status >= 0) 501 status = YPPUSH_SUCC; 502 else 503 status = YPPUSH_DBM; 504 } 505 506 return status; 507 } 508 509 int 510 add_interdomain(client, domain, map, db) 511 CLIENT *client; 512 char *domain, *map; 513 DBM *db; 514 { 515 char keystr[] = YP_INTERDOMAIN_KEY; 516 char *value; 517 int vallen; 518 int status; 519 datum k, v; 520 521 /* Get INTERDOMAIN */ 522 k.dptr = keystr; 523 k.dsize = strlen(keystr); 524 525 status = yp_match_host(client, domain, map, 526 k.dptr, k.dsize, &value, &vallen); 527 528 if (status == 0 && value) { 529 v.dptr = value; 530 v.dsize = vallen; 531 532 if (v.dptr != NULL) { 533 status = ypdb_store(db, k, v, YPDB_INSERT); 534 if (status >= 0) 535 status = YPPUSH_SUCC; 536 else 537 status = YPPUSH_DBM; 538 } 539 } 540 541 return status; 542 } 543 544 int 545 add_secure(client, domain, map, db) 546 CLIENT *client; 547 char *domain, *map; 548 DBM *db; 549 { 550 char keystr[] = YP_SECURE_KEY; 551 char *value; 552 int vallen; 553 int status; 554 datum k, v; 555 556 /* Get SECURE */ 557 k.dptr = keystr; 558 k.dsize = strlen(keystr); 559 560 status = yp_match_host(client, domain, map, 561 k.dptr, k.dsize, &value, &vallen); 562 563 if (status > 0) { 564 v.dptr = value; 565 v.dsize = vallen; 566 567 if (v.dptr != NULL) { 568 status = ypdb_store(db, k, v, YPDB_INSERT); 569 if (status >= 0) 570 status = YPPUSH_SUCC; 571 else 572 status = YPPUSH_DBM; 573 } 574 } 575 576 return status; 577 } 578 579 int 580 send_clear(client) 581 CLIENT *client; 582 { 583 struct timeval tv; 584 int r; 585 int status; 586 587 status = YPPUSH_SUCC; 588 589 tv.tv_sec = 10; 590 tv.tv_usec = 0; 591 592 /* Send CLEAR */ 593 r = clnt_call(client, YPPROC_CLEAR, xdr_void, 0, xdr_void, 0, tv); 594 if (r != RPC_SUCCESS) { 595 clnt_perror(client, "yp_clear: clnt_call"); 596 status = YPPUSH_RPC; 597 } 598 599 return status; 600 } 601 602 int 603 send_reply(client, status, tid) 604 CLIENT *client; 605 int status, tid; 606 { 607 struct timeval tv; 608 struct ypresp_xfr resp; 609 int r; 610 611 tv.tv_sec = 10; 612 tv.tv_usec = 0; 613 614 resp.transid = tid; 615 resp.xfrstat = status; 616 617 /* Send XFRRESP */ 618 r = clnt_call(client, YPPUSHPROC_XFRRESP, xdr_ypresp_xfr, &resp, 619 xdr_void, 0, tv); 620 if (r != RPC_SUCCESS) { 621 clnt_perror(client, "yppushresp_xdr: clnt_call"); 622 status = YPPUSH_RPC; 623 } 624 625 return status; 626 } 627
Indexes created Sun Oct 12 09:09:55 GMT 2025