ypxfr.c revision 1.6
1 /* $NetBSD: ypxfr.c,v 1.6 1997/10/13 03:15:30 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 1.6 1997/10/13 03:15:30 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 <unistd.h> 53 54 #include <rpc/rpc.h> 55 #include <rpc/xdr.h> 56 #include <rpcsvc/yp_prot.h> 57 #include <rpcsvc/ypclnt.h> 58 59 #include "yplib_host.h" 60 #include "yplog.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 ypopenlog(); 165 166 yplog("ypxfr: Arguments:"); 167 yplog("YP clear to local: %s", (cflag) ? "no" : "yes"); 168 yplog(" Force transfer: %s", (fflag) ? "yes" : "no"); 169 yplog(" domain: %s", domain); 170 yplog(" host: %s", host); 171 yplog(" source domain: %s", srcdomain); 172 yplog(" transid: %s", tid); 173 yplog(" prog: %s", prog); 174 yplog(" port: %s", port); 175 yplog(" ipadd: %s", ipadd); 176 yplog(" map: %s", map); 177 178 if (fflag != 0) 179 ordernum = 0; 180 else { 181 status = get_local_ordernum(domain, map, &ordernum); 182 if (status < 0) 183 goto punt; 184 } 185 186 yplog("Get Master"); 187 188 if (host == NULL) { 189 if (srcdomain == NULL) 190 status = yp_master(domain, map, &host); 191 else 192 status = yp_master(srcdomain, map, &host); 193 194 if (status == 0) 195 status = YPPUSH_SUCC; 196 else { 197 status = -status; 198 goto punt; 199 } 200 } 201 202 yplog("Connect host: %s", host); 203 204 client = yp_bind_host(host, YPPROG, YPVERS, 0, 1); 205 206 status = get_remote_ordernum(client, domain, map, ordernum, 207 &new_ordernum); 208 209 210 if (status == YPPUSH_SUCC) { 211 /* Create temporary db */ 212 mktemp(mapname); 213 db = create_db(domain, map, mapname); 214 if (db == NULL) 215 status = YPPUSH_DBM; 216 217 /* Add ORDER */ 218 if (status > 0) 219 status = add_order(db, new_ordernum); 220 221 /* Add MASTER */ 222 if (status > 0) 223 status = add_master(client, domain, map, db); 224 225 /* Add INTERDOMAIN */ 226 if (status > 0) 227 status = add_interdomain(client, domain, map, db); 228 229 /* Add SECURE */ 230 if (status > 0) 231 status = add_secure(client, domain, map, db); 232 233 if (status > 0) { 234 callback.foreach = ypxfr_foreach; 235 get_map(client, domain, map, &callback); 236 } 237 238 /* Close db */ 239 if (db != NULL) 240 ypdb_close(db); 241 242 /* Rename db */ 243 if (status > 0) 244 status = install_db(domain, map, mapname); 245 else 246 status = unlink_db(domain, map, mapname); 247 } 248 249 punt: 250 xfr_status = status; 251 252 if (client != NULL) 253 clnt_destroy(client); 254 255 /* YP_CLEAR */ 256 if (!cflag) { 257 client = yp_bind_local(YPPROG, YPVERS); 258 status = send_clear(client); 259 clnt_destroy(client); 260 } 261 262 if (Cflag > 0) { 263 /* Send Response */ 264 client = yp_bind_host(ipadd, atoi(prog), 1, atoi(port), 0); 265 status = send_reply(client, xfr_status, atoi(tid)); 266 clnt_destroy(client); 267 } 268 269 exit (0); 270 } 271 272 static int 273 ypxfr_foreach(status, keystr, keylen, valstr, vallen, data) 274 int status; 275 char *keystr; 276 int keylen; 277 char *valstr; 278 int vallen; 279 char *data; 280 { 281 datum key, val; 282 283 if (status == YP_NOMORE) 284 return (0); 285 286 keystr[keylen] = '\0'; 287 valstr[vallen] = '\0'; 288 289 key.dptr = keystr; 290 key.dsize = strlen(keystr); 291 292 val.dptr = valstr; 293 val.dsize = strlen(valstr); 294 295 ypdb_store(db, key, val, YPDB_INSERT); 296 297 return (0); 298 } 299 300 int 301 get_local_ordernum(domain, map, lordernum) 302 char *domain, *map; 303 u_int *lordernum; 304 { 305 char map_path[1024]; 306 char order_key[] = YP_LAST_KEY; 307 char order[MAX_LAST_LEN+1]; 308 struct stat finfo; 309 DBM *db; 310 datum k, v; 311 int status; 312 313 status = YPPUSH_SUCC; 314 315 snprintf(map_path, sizeof(map_path), "%s/%s", YP_DB_PATH, domain); 316 map_path[sizeof(map_path) - 1] = '\0'; 317 318 /* Make sure we serve the domain. */ 319 if ((stat(map_path, &finfo)) != 0 || 320 (S_ISDIR(finfo.st_mode) == 0)) { 321 warnx("domain `%s' not found locally", domain); 322 status = YPPUSH_NODOM; 323 goto out; 324 } 325 326 /* Make sure we serve the map. */ 327 snprintf(map_path, sizeof(map_path), "%s/%s/%s%s", 328 YP_DB_PATH, domain, map, YPDB_SUFFIX); 329 map_path[sizeof(map_path) - 1] = '\0'; 330 if (stat(map_path, &finfo) != 0) { 331 status = YPPUSH_NOMAP; 332 goto out; 333 } 334 335 /* Open the map file. */ 336 snprintf(map_path, sizeof(map_path), "%s/%s/%s", 337 YP_DB_PATH, domain, map); 338 map_path[sizeof(map_path) - 1] = '\0'; 339 db = ypdb_open(map_path, O_RDONLY, 0444); 340 if (db == NULL) { 341 status = YPPUSH_DBM; 342 goto out; 343 } 344 345 k.dptr = (char *)&order_key; 346 k.dsize = YP_LAST_LEN; 347 348 v = ypdb_fetch(db, k); 349 ypdb_close(db); 350 351 if (v.dptr == NULL) 352 *lordernum = 0; 353 else { 354 strncpy(order, v.dptr, v.dsize); 355 order[v.dsize] = '\0'; 356 *lordernum = (u_int)atoi((char *)&order); 357 } 358 359 out: 360 if ((status == YPPUSH_NOMAP) || (status == YPPUSH_DBM)) { 361 *lordernum = 0; 362 status = YPPUSH_SUCC; 363 } 364 365 return (status); 366 } 367 368 int 369 get_remote_ordernum(client, domain, map, lordernum, rordernum) 370 CLIENT *client; 371 char *domain, *map; 372 u_int lordernum, *rordernum; 373 { 374 int status; 375 376 status = yp_order_host(client, domain, map, (int *)rordernum); 377 378 if (status == 0) 379 if (*rordernum <= lordernum) 380 status = YPPUSH_AGE; 381 else 382 status = YPPUSH_SUCC; 383 384 return status; 385 } 386 387 void 388 get_map(client, domain, map, incallback) 389 CLIENT *client; 390 char *domain, *map; 391 struct ypall_callback *incallback; 392 { 393 394 (void)yp_all_host(client, domain, map, incallback); 395 } 396 397 DBM * 398 create_db(domain, map, temp_map) 399 char *domain, *map, *temp_map; 400 { 401 char db_temp[255]; 402 DBM *db; 403 404 snprintf(db_temp, sizeof(db_temp), "%s/%s/%s", 405 YP_DB_PATH, domain, temp_map); 406 db_temp[sizeof(db_temp) - 1] = '\0'; 407 408 db = ypdb_open(db_temp, O_RDWR|O_CREAT|O_EXCL, 0444); 409 410 return db; 411 } 412 413 int 414 install_db(domain, map, temp_map) 415 char *domain, *map, *temp_map; 416 { 417 char db_name[255], db_temp[255]; 418 419 snprintf(db_name, sizeof(db_name), "%s/%s/%s%s", 420 YP_DB_PATH, domain, map, YPDB_SUFFIX); 421 db_name[sizeof(db_name) - 1] = '\0'; 422 423 snprintf(db_temp, sizeof(db_temp), "%s/%s/%s%s", 424 YP_DB_PATH, domain, temp_map, YPDB_SUFFIX); 425 db_temp[sizeof(db_temp) - 1] = '\0'; 426 427 if (rename(db_temp, db_name)) { 428 warn("can't rename `%s' -> `%s'", db_temp, db_name); 429 return YPPUSH_YPERR; 430 } 431 432 return YPPUSH_SUCC; 433 } 434 435 int 436 unlink_db(domain, map, temp_map) 437 char *domain, *map, *temp_map; 438 { 439 char db_temp[255]; 440 441 snprintf(db_temp, sizeof(db_temp), "%s/%s/%s%s", 442 YP_DB_PATH, domain, temp_map, YPDB_SUFFIX); 443 db_temp[sizeof(db_temp) - 1] = '\0'; 444 445 if (unlink(db_temp)) { 446 warn("can't unlink `%s'", db_temp); 447 return YPPUSH_YPERR; 448 } 449 450 return YPPUSH_SUCC; 451 } 452 453 int 454 add_order(db, ordernum) 455 DBM *db; 456 u_int ordernum; 457 { 458 char datestr[11]; 459 datum key, val; 460 char keystr[] = YP_LAST_KEY; 461 int status; 462 463 snprintf(datestr, sizeof(datestr), "%010d", ordernum); 464 datestr[sizeof(datestr) - 1] = '\0'; 465 466 key.dptr = keystr; 467 key.dsize = strlen(keystr); 468 469 val.dptr = datestr; 470 val.dsize = strlen(datestr); 471 472 status = ypdb_store(db, key, val, YPDB_INSERT); 473 if(status >= 0) 474 status = YPPUSH_SUCC; 475 else 476 status = YPPUSH_DBM; 477 478 return (status); 479 } 480 481 int 482 add_master(client, domain, map, db) 483 CLIENT *client; 484 char *domain, *map; 485 DBM *db; 486 { 487 char keystr[] = YP_MASTER_KEY; 488 char *master; 489 int status; 490 datum key, val; 491 492 master = NULL; 493 494 /* Get MASTER */ 495 status = yp_master_host(client, domain, map, &master); 496 497 if (master != NULL) { 498 key.dptr = keystr; 499 key.dsize = strlen(keystr); 500 501 val.dptr = master; 502 val.dsize = strlen(master); 503 504 status = ypdb_store(db, key, val, YPDB_INSERT); 505 if (status >= 0) 506 status = YPPUSH_SUCC; 507 else 508 status = YPPUSH_DBM; 509 } 510 511 return status; 512 } 513 514 int 515 add_interdomain(client, domain, map, db) 516 CLIENT *client; 517 char *domain, *map; 518 DBM *db; 519 { 520 char keystr[] = YP_INTERDOMAIN_KEY; 521 char *value; 522 int vallen; 523 int status; 524 datum k, v; 525 526 /* Get INTERDOMAIN */ 527 k.dptr = keystr; 528 k.dsize = strlen(keystr); 529 530 status = yp_match_host(client, domain, map, 531 k.dptr, k.dsize, &value, &vallen); 532 533 if (status == 0 && value) { 534 v.dptr = value; 535 v.dsize = vallen; 536 537 if (v.dptr != NULL) { 538 status = ypdb_store(db, k, v, YPDB_INSERT); 539 if (status >= 0) 540 status = YPPUSH_SUCC; 541 else 542 status = YPPUSH_DBM; 543 } 544 } 545 546 return status; 547 } 548 549 int 550 add_secure(client, domain, map, db) 551 CLIENT *client; 552 char *domain, *map; 553 DBM *db; 554 { 555 char keystr[] = YP_SECURE_KEY; 556 char *value; 557 int vallen; 558 int status; 559 datum k, v; 560 561 /* Get SECURE */ 562 k.dptr = keystr; 563 k.dsize = strlen(keystr); 564 565 status = yp_match_host(client, domain, map, 566 k.dptr, k.dsize, &value, &vallen); 567 568 if (status > 0) { 569 v.dptr = value; 570 v.dsize = vallen; 571 572 if (v.dptr != NULL) { 573 status = ypdb_store(db, k, v, YPDB_INSERT); 574 if (status >= 0) 575 status = YPPUSH_SUCC; 576 else 577 status = YPPUSH_DBM; 578 } 579 } 580 581 return status; 582 } 583 584 int 585 send_clear(client) 586 CLIENT *client; 587 { 588 struct timeval tv; 589 int r; 590 int status; 591 592 status = YPPUSH_SUCC; 593 594 tv.tv_sec = 10; 595 tv.tv_usec = 0; 596 597 /* Send CLEAR */ 598 r = clnt_call(client, YPPROC_CLEAR, xdr_void, 0, xdr_void, 0, tv); 599 if (r != RPC_SUCCESS) { 600 clnt_perror(client, "yp_clear: clnt_call"); 601 status = YPPUSH_RPC; 602 } 603 604 return status; 605 } 606 607 int 608 send_reply(client, status, tid) 609 CLIENT *client; 610 int status, tid; 611 { 612 struct timeval tv; 613 struct ypresp_xfr resp; 614 int r; 615 616 tv.tv_sec = 10; 617 tv.tv_usec = 0; 618 619 resp.transid = tid; 620 resp.xfrstat = status; 621 622 /* Send XFRRESP */ 623 r = clnt_call(client, YPPUSHPROC_XFRRESP, xdr_ypresp_xfr, &resp, 624 xdr_void, 0, tv); 625 if (r != RPC_SUCCESS) { 626 clnt_perror(client, "yppushresp_xdr: clnt_call"); 627 status = YPPUSH_RPC; 628 } 629 630 return status; 631 } 632
Indexes created Sun Oct 12 09:09:55 GMT 2025