ypxfr.c revision 1.4
1 /* $NetBSD: ypxfr.c,v 1.4 1997/07/18 21:57:24 thorpej 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 extern char *optarg; 61 extern int optind; 62 63 DBM *db; 64 65 static int ypxfr_foreach __P((int, char *, int, char *, int, char *)); 66 67 int main __P((int, char *[])); 68 int get_local_ordernum __P((char *, char *, u_int *)); 69 int get_remote_ordernum __P((CLIENT *, char *, char *, u_int, u_int *)); 70 void get_map __P((CLIENT *, char *, char *, struct ypall_callback *)); 71 DBM *create_db __P((char *, char *, char *)); 72 int install_db __P((char *, char *, char *)); 73 int unlink_db __P((char *, char *, char *)); 74 int add_order __P((DBM *, u_int)); 75 int add_master __P((CLIENT *, char *, char *, DBM *)); 76 int add_interdomain __P((CLIENT *, char *, char *, DBM *)); 77 int add_secure __P((CLIENT *, char *, char *, DBM *)); 78 int send_clear __P((CLIENT *)); 79 int send_reply __P((CLIENT *, int, int)); 80 81 int 82 main(argc, argv) 83 int argc; 84 char *argv[]; 85 { 86 int need_usage = 0, cflag = 0, fflag = 0, Cflag = 0; 87 int ch; 88 char *domain; 89 char *host = NULL; 90 char *srcdomain = NULL; 91 char *tid = NULL; 92 char *prog = NULL; 93 char *ipadd = NULL; 94 char *port = NULL; 95 char *map = NULL; 96 u_int ordernum, new_ordernum; 97 struct ypall_callback callback; 98 CLIENT *client; 99 char mapname[] = "ypdbXXXXXX"; 100 int status, xfr_status; 101 102 status = YPPUSH_SUCC; 103 client = NULL; 104 105 if (yp_get_default_domain(&domain)) 106 errx(1, "can't get YP domain name"); 107 108 while ((ch = getopt(argc, argv, "cd:fh:s:C:")) != -1) { 109 switch (ch) { 110 case 'c': 111 cflag = 1; 112 break; 113 114 case 'd': 115 domain = optarg; 116 break; 117 118 case 'f': 119 fflag = 1; 120 break; 121 122 case 'h': 123 host = optarg; 124 break; 125 126 case 's': 127 srcdomain = optarg; 128 break; 129 130 case 'C': 131 if (optind + 3 >= argc) { 132 need_usage = 1; 133 optind = argc; 134 break; 135 } 136 Cflag = 1; 137 tid = optarg; 138 prog = argv[optind++]; 139 ipadd = argv[optind++]; 140 port = argv[optind++]; 141 break; 142 143 default: 144 need_usage = 1; 145 } 146 } 147 argc -= optind; argv += optind; 148 149 if (argc != 1) 150 need_usage = 1; 151 152 map = argv[0]; 153 154 if (need_usage) { 155 status = YPPUSH_BADARGS; 156 fprintf(stderr, "usage: %s [-cf] [-d domain] [-h host] %s\n", 157 __progname, "[-s domain] [-C tid prog ipadd port] mapname"); 158 goto punt; 159 } 160 161 ypopenlog(); 162 163 yplog("ypxfr: Arguments:"); 164 yplog("YP clear to local: %s", (cflag) ? "no" : "yes"); 165 yplog(" Force transfer: %s", (fflag) ? "yes" : "no"); 166 yplog(" domain: %s", domain); 167 yplog(" host: %s", host); 168 yplog(" source domain: %s", srcdomain); 169 yplog(" transid: %s", tid); 170 yplog(" prog: %s", prog); 171 yplog(" port: %s", port); 172 yplog(" ipadd: %s", ipadd); 173 yplog(" map: %s", map); 174 175 if (fflag != 0) 176 ordernum = 0; 177 else { 178 status = get_local_ordernum(domain, map, &ordernum); 179 if (status < 0) 180 goto punt; 181 } 182 183 yplog("Get Master"); 184 185 if (host == NULL) { 186 if (srcdomain == NULL) 187 status = yp_master(domain,map,&host); 188 else 189 status = yp_master(srcdomain,map,&host); 190 191 if (status == 0) 192 status = YPPUSH_SUCC; 193 else { 194 status = -status; 195 goto punt; 196 } 197 } 198 199 yplog("Connect host: %s", host); 200 201 client = yp_bind_host(host,YPPROG,YPVERS,0,1); 202 203 status = get_remote_ordernum(client,domain,map, 204 ordernum,&new_ordernum); 205 206 207 if (status == YPPUSH_SUCC) { 208 /* Create temporary db */ 209 mktemp(mapname); 210 db = create_db(domain,map,mapname); 211 if (db == NULL) 212 status = YPPUSH_DBM; 213 214 /* Add ORDER */ 215 if (status > 0) 216 status = add_order(db, new_ordernum); 217 218 /* Add MASTER */ 219 if (status > 0) 220 status = add_master(client, domain, map, db); 221 222 /* Add INTERDOMAIN */ 223 if (status > 0) 224 status = add_interdomain(client, domain, map, db); 225 226 /* Add SECURE */ 227 if (status > 0) 228 status = add_secure(client, domain, map, db); 229 230 if (status > 0) { 231 callback.foreach = ypxfr_foreach; 232 get_map(client, domain, map, &callback); 233 } 234 235 /* Close db */ 236 if (db != NULL) 237 ypdb_close(db); 238 239 /* Rename db */ 240 if (status > 0) 241 status = install_db(domain, map, mapname); 242 else 243 status = unlink_db(domain, map, mapname); 244 } 245 246 punt: 247 xfr_status = status; 248 249 if (client != NULL) 250 clnt_destroy(client); 251 252 /* YP_CLEAR */ 253 if (!cflag) { 254 client = yp_bind_local(YPPROG, YPVERS); 255 status = send_clear(client); 256 clnt_destroy(client); 257 } 258 259 if (Cflag > 0) { 260 /* Send Response */ 261 client = yp_bind_host(ipadd, atoi(prog), 1, atoi(port), 0); 262 status = send_reply(client, xfr_status, atoi(tid)); 263 clnt_destroy(client); 264 } 265 266 exit (0); 267 } 268 269 static int 270 ypxfr_foreach(status, keystr, keylen, valstr, vallen, data) 271 int status; 272 char *keystr; 273 int keylen; 274 char *valstr; 275 int vallen; 276 char *data; 277 { 278 datum key, val; 279 280 if (status == YP_NOMORE) 281 return (0); 282 283 keystr[keylen] = '\0'; 284 valstr[vallen] = '\0'; 285 286 key.dptr = keystr; 287 key.dsize = strlen(keystr); 288 289 val.dptr = valstr; 290 val.dsize = strlen(valstr); 291 292 ypdb_store(db, key, val, YPDB_INSERT); 293 294 return (0); 295 } 296 297 int 298 get_local_ordernum(domain, map, lordernum) 299 char *domain, *map; 300 u_int *lordernum; 301 { 302 char map_path[1024]; 303 char order_key[] = YP_LAST_KEY; 304 char order[MAX_LAST_LEN+1]; 305 struct stat finfo; 306 DBM *db; 307 datum k,v; 308 int status; 309 310 status = YPPUSH_SUCC; 311 312 snprintf(map_path, sizeof(map_path), "%s/%s", YP_DB_PATH, domain); 313 map_path[sizeof(map_path) - 1] = '\0'; 314 315 /* Make sure we serve the domain. */ 316 if ((stat(map_path, &finfo)) != 0 || 317 (S_ISDIR(finfo.st_mode) == 0)) { 318 warnx("domain `%s' not found locally", domain); 319 status = YPPUSH_NODOM; 320 goto out; 321 } 322 323 /* Make sure we serve the map. */ 324 snprintf(map_path, sizeof(map_path), "%s/%s/%s%s", 325 YP_DB_PATH, domain, map, YPDB_SUFFIX); 326 map_path[sizeof(map_path) - 1] = '\0'; 327 if (stat(map_path, &finfo) != 0) { 328 status = YPPUSH_NOMAP; 329 goto out; 330 } 331 332 /* Open the map file. */ 333 snprintf(map_path, sizeof(map_path), "%s/%s/%s", 334 YP_DB_PATH, domain, map); 335 map_path[sizeof(map_path) - 1] = '\0'; 336 db = ypdb_open(map_path, O_RDONLY, 0444); 337 if (db == NULL) { 338 status = YPPUSH_DBM; 339 goto out; 340 } 341 342 k.dptr = (char *)&order_key; 343 k.dsize = YP_LAST_LEN; 344 345 v = ypdb_fetch(db, k); 346 ypdb_close(db); 347 348 if (v.dptr == NULL) 349 *lordernum = 0; 350 else { 351 strncpy(order, v.dptr, v.dsize); 352 order[v.dsize] = '\0'; 353 *lordernum = (u_int)atoi((char *)&order); 354 } 355 356 out: 357 if ((status == YPPUSH_NOMAP) || (status == YPPUSH_DBM)) { 358 *lordernum = 0; 359 status = YPPUSH_SUCC; 360 } 361 362 return (status); 363 } 364 365 int 366 get_remote_ordernum(client, domain, map, lordernum, rordernum) 367 CLIENT *client; 368 char *domain, *map; 369 u_int lordernum, *rordernum; 370 { 371 int status; 372 373 status = yp_order_host(client, domain, map, (int *)rordernum); 374 375 if (status == 0) 376 if (*rordernum <= lordernum) 377 status = YPPUSH_AGE; 378 else 379 status = YPPUSH_SUCC; 380 381 return status; 382 } 383 384 void 385 get_map(client, domain, map, incallback) 386 CLIENT *client; 387 char *domain, *map; 388 struct ypall_callback *incallback; 389 { 390 391 (void)yp_all_host(client, domain, map, incallback); 392 } 393 394 DBM * 395 create_db(domain, map, temp_map) 396 char *domain, *map, *temp_map; 397 { 398 char db_temp[255]; 399 DBM *db; 400 401 snprintf(db_temp, sizeof(db_temp), "%s/%s/%s", 402 YP_DB_PATH, domain, temp_map); 403 db_temp[sizeof(db_temp) - 1] = '\0'; 404 405 db = ypdb_open(db_temp, O_RDWR|O_CREAT|O_EXCL, 0444); 406 407 return db; 408 } 409 410 int 411 install_db(domain,map,temp_map) 412 char *domain, *map, *temp_map; 413 { 414 char db_name[255], db_temp[255]; 415 416 snprintf(db_name, sizeof(db_name), "%s/%s/%s%s", 417 YP_DB_PATH, domain, map, YPDB_SUFFIX); 418 db_name[sizeof(db_name) - 1] = '\0'; 419 420 snprintf(db_temp, sizeof(db_temp), "%s/%s/%s%s", 421 YP_DB_PATH, domain, temp_map, YPDB_SUFFIX); 422 db_temp[sizeof(db_temp) - 1] = '\0'; 423 424 if (rename(db_temp, db_name)) { 425 warn("can't rename `%s' -> `%s'", db_temp, db_name); 426 return YPPUSH_YPERR; 427 } 428 429 return YPPUSH_SUCC; 430 } 431 432 int 433 unlink_db(domain, map, temp_map) 434 char *domain, *map, *temp_map; 435 { 436 char db_temp[255]; 437 438 snprintf(db_temp, sizeof(db_temp), "%s/%s/%s%s", 439 YP_DB_PATH, domain, temp_map, YPDB_SUFFIX); 440 db_temp[sizeof(db_temp) - 1] = '\0'; 441 442 if (unlink(db_temp)) { 443 warn("can't unlink `%s'", db_temp); 444 return YPPUSH_YPERR; 445 } 446 447 return YPPUSH_SUCC; 448 } 449 450 int 451 add_order(db, ordernum) 452 DBM *db; 453 u_int ordernum; 454 { 455 char datestr[11]; 456 datum key, val; 457 char keystr[] = YP_LAST_KEY; 458 int status; 459 460 snprintf(datestr, sizeof(datestr), "%010d", ordernum); 461 datestr[sizeof(datestr) - 1] = '\0'; 462 463 key.dptr = keystr; 464 key.dsize = strlen(keystr); 465 466 val.dptr = datestr; 467 val.dsize = strlen(datestr); 468 469 status = ypdb_store(db, key, val, YPDB_INSERT); 470 if(status >= 0) 471 status = YPPUSH_SUCC; 472 else 473 status = YPPUSH_DBM; 474 475 return (status); 476 } 477 478 int 479 add_master(client, domain, map, db) 480 CLIENT *client; 481 char *domain, *map; 482 DBM *db; 483 { 484 char keystr[] = YP_MASTER_KEY; 485 char *master; 486 int status; 487 datum key,val; 488 489 master = NULL; 490 491 /* Get MASTER */ 492 status = yp_master_host(client, domain, map, &master); 493 494 if (master != NULL) { 495 key.dptr = keystr; 496 key.dsize = strlen(keystr); 497 498 val.dptr = master; 499 val.dsize = strlen(master); 500 501 status = ypdb_store(db, key, val, YPDB_INSERT); 502 if (status >= 0) 503 status = YPPUSH_SUCC; 504 else 505 status = YPPUSH_DBM; 506 } 507 508 return status; 509 } 510 511 int 512 add_interdomain(client, domain, map, db) 513 CLIENT *client; 514 char *domain, *map; 515 DBM *db; 516 { 517 char keystr[] = YP_INTERDOMAIN_KEY; 518 char *value; 519 int vallen; 520 int status; 521 datum k, v; 522 523 /* Get INTERDOMAIN */ 524 k.dptr = keystr; 525 k.dsize = strlen(keystr); 526 527 status = yp_match_host(client, domain, map, 528 k.dptr, k.dsize, &value, &vallen); 529 530 if (status == 0 && value) { 531 v.dptr = value; 532 v.dsize = vallen; 533 534 if (v.dptr != NULL) { 535 status = ypdb_store(db, k, v, YPDB_INSERT); 536 if (status >= 0) 537 status = YPPUSH_SUCC; 538 else 539 status = YPPUSH_DBM; 540 } 541 } 542 543 return status; 544 } 545 546 int 547 add_secure(client, domain, map, db) 548 CLIENT *client; 549 char *domain, *map; 550 DBM *db; 551 { 552 char keystr[] = YP_SECURE_KEY; 553 char *value; 554 int vallen; 555 int status; 556 datum k, v; 557 558 /* Get SECURE */ 559 k.dptr = keystr; 560 k.dsize = strlen(keystr); 561 562 status = yp_match_host(client, domain, map, 563 k.dptr, k.dsize, &value, &vallen); 564 565 if (status > 0) { 566 v.dptr = value; 567 v.dsize = vallen; 568 569 if (v.dptr != NULL) { 570 status = ypdb_store(db, k, v, YPDB_INSERT); 571 if (status >= 0) 572 status = YPPUSH_SUCC; 573 else 574 status = YPPUSH_DBM; 575 } 576 } 577 578 return status; 579 } 580 581 int 582 send_clear(client) 583 CLIENT *client; 584 { 585 struct timeval tv; 586 int r; 587 int status; 588 589 status = YPPUSH_SUCC; 590 591 tv.tv_sec = 10; 592 tv.tv_usec = 0; 593 594 /* Send CLEAR */ 595 r = clnt_call(client, YPPROC_CLEAR, xdr_void, 0, xdr_void, 0, tv); 596 if (r != RPC_SUCCESS) { 597 clnt_perror(client, "yp_clear: clnt_call"); 598 status = YPPUSH_RPC; 599 } 600 601 return status; 602 } 603 604 int 605 send_reply(client, status, tid) 606 CLIENT *client; 607 int status, tid; 608 { 609 struct timeval tv; 610 struct ypresp_xfr resp; 611 int r; 612 613 tv.tv_sec = 10; 614 tv.tv_usec = 0; 615 616 resp.transid = tid; 617 resp.xfrstat = status; 618 619 /* Send XFRRESP */ 620 r = clnt_call(client, YPPUSHPROC_XFRRESP, xdr_ypresp_xfr, &resp, 621 xdr_void, 0, tv); 622 if (r != RPC_SUCCESS) { 623 clnt_perror(client, "yppushresp_xdr: clnt_call"); 624 status = YPPUSH_RPC; 625 } 626 627 return status; 628 } 629
Indexes created Sun Oct 12 09:09:55 GMT 2025