ypxfr.c revision 1.1
1 /* $NetBSD: ypxfr.c,v 1.1 1996/08/09 10:15:06 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 <fcntl.h> 42 #include <netdb.h> 43 #include <string.h> 44 #include <stdio.h> 45 #include <stdlib.h> 46 #include <unistd.h> 47 48 #include <rpc/rpc.h> 49 #include <rpc/xdr.h> 50 #include <rpcsvc/yp_prot.h> 51 #include <rpcsvc/ypclnt.h> 52 53 #include "yplib_host.h" 54 #include "yplog.h" 55 #include "ypdb.h" 56 #include "ypdef.h" 57 58 extern char *__progname; /* from crt0.o */ 59 extern char *optarg; 60 extern int optind; 61 62 DBM *db; 63 64 static int ypxfr_foreach __P((int, char *, int, char *, int, int *)); 65 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 Cflag = 1; 130 break; 131 tid = optarg; 132 prog = argv[optind++]; 133 ipadd = argv[optind++]; 134 port = argv[optind++]; 135 break; 136 137 default: 138 need_usage = 1; 139 } 140 } 141 argc -= optind; argv += optind; 142 143 if (argc != 1) 144 need_usage = 1; 145 146 map = argv[0]; 147 148 if (need_usage) { 149 status = YPPUSH_BADARGS; 150 fprintf(stderr, "usage: %s [-cf] [-d domain] [-h host] %s\n", 151 __progname, "[-s domain] [-C tid prog ipadd port] mapname"); 152 goto punt; 153 } 154 155 ypopenlog(); 156 157 yplog("ypxfr: Arguments:"); 158 yplog("YP clear to local: %s", (cflag) ? "no" : "yes"); 159 yplog(" Force transfer: %s", (fflag) ? "yes" : "no"); 160 yplog(" domain: %s", domain); 161 yplog(" host: %s", host); 162 yplog(" source domain: %s", srcdomain); 163 yplog(" transid: %s", tid); 164 yplog(" prog: %s", prog); 165 yplog(" port: %s", port); 166 yplog(" ipadd: %s", ipadd); 167 yplog(" map: %s", map); 168 169 if (fflag != 0) 170 ordernum = 0; 171 else { 172 status = get_local_ordernum(domain, map, &ordernum); 173 if (status < 0) 174 goto punt; 175 } 176 177 yplog("Get Master"); 178 179 if (host == NULL) { 180 if (srcdomain == NULL) 181 status = yp_master(domain,map,&host); 182 else 183 status = yp_master(srcdomain,map,&host); 184 185 if (status == 0) 186 status = YPPUSH_SUCC; 187 else { 188 status = -status; 189 goto punt; 190 } 191 } 192 193 yplog("Connect host: %s", host); 194 195 client = yp_bind_host(host,YPPROG,YPVERS,0,1); 196 197 status = get_remote_ordernum(client,domain,map, 198 ordernum,&new_ordernum); 199 200 201 if (status == YPPUSH_SUCC) { 202 /* Create temporary db */ 203 mktemp(mapname); 204 db = create_db(domain,map,mapname); 205 if (db == NULL) 206 status = YPPUSH_DBM; 207 208 /* Add ORDER */ 209 if (status > 0) 210 status = add_order(db, new_ordernum); 211 212 /* Add MASTER */ 213 if (status > 0) 214 status = add_master(client, domain, map, db); 215 216 /* Add INTERDOMAIN */ 217 if (status > 0) 218 status = add_interdomain(client, domain, map, db); 219 220 /* Add SECURE */ 221 if (status > 0) 222 status = add_secure(client, domain, map, db); 223 224 if (status > 0) { 225 callback.foreach = (int(*)())ypxfr_foreach; 226 get_map(client, domain, map, &callback); 227 } 228 229 /* Close db */ 230 if (db != NULL) 231 ypdb_close(db); 232 233 /* Rename db */ 234 if (status > 0) 235 status = install_db(domain, map, mapname); 236 else 237 status = unlink_db(domain, map, mapname); 238 } 239 240 punt: 241 xfr_status = status; 242 243 if (client != NULL) 244 clnt_destroy(client); 245 246 /* YP_CLEAR */ 247 if (!cflag) { 248 client = yp_bind_local(YPPROG, YPVERS); 249 status = send_clear(client); 250 clnt_destroy(client); 251 } 252 253 if (Cflag > 0) { 254 /* Send Response */ 255 client = yp_bind_host(ipadd, atoi(prog), 1, atoi(port), 0); 256 status = send_reply(client, xfr_status, atoi(tid)); 257 clnt_destroy(client); 258 } 259 260 exit (0); 261 } 262 263 static int 264 ypxfr_foreach(status, keystr, keylen, valstr, vallen, data) 265 int status; 266 char *keystr; 267 int keylen; 268 char *valstr; 269 int vallen; 270 int *data; 271 { 272 datum key, val; 273 274 if (status == YP_NOMORE) 275 return (0); 276 277 keystr[keylen] = '\0'; 278 valstr[vallen] = '\0'; 279 280 key.dptr = keystr; 281 key.dsize = strlen(keystr); 282 283 val.dptr = valstr; 284 val.dsize = strlen(valstr); 285 286 ypdb_store(db, key, val, YPDB_INSERT); 287 288 return (0); 289 } 290 291 int 292 get_local_ordernum(domain, map, lordernum) 293 char *domain, *map; 294 u_int *lordernum; 295 { 296 char map_path[1024]; 297 char order_key[] = YP_LAST_KEY; 298 char order[MAX_LAST_LEN+1]; 299 struct stat finfo; 300 DBM *db; 301 datum k,v; 302 int status; 303 304 status = YPPUSH_SUCC; 305 306 snprintf(map_path, sizeof(map_path), "%s/%s", YP_DB_PATH, domain); 307 map_path[sizeof(map_path) - 1] = '\0'; 308 309 /* Make sure we serve the domain. */ 310 if ((stat(map_path, &finfo)) != 0 || 311 (S_ISDIR(finfo.st_mode) == 0)) { 312 warnx("domain `%s' not found locally"); 313 status = YPPUSH_NODOM; 314 goto out; 315 } 316 317 /* Make sure we serve the map. */ 318 snprintf(map_path, sizeof(map_path), "%s/%s/%s%s", 319 YP_DB_PATH, domain, map, YPDB_SUFFIX); 320 map_path[sizeof(map_path) - 1] = '\0'; 321 if (stat(map_path, &finfo) != 0) { 322 status = YPPUSH_NOMAP; 323 goto out; 324 } 325 326 /* Open the map file. */ 327 snprintf(map_path, sizeof(map_path), "%s/%s/%s", 328 YP_DB_PATH, domain, map); 329 map_path[sizeof(map_path) - 1] = '\0'; 330 db = ypdb_open(map_path, O_RDONLY, 0444); 331 if (db == NULL) { 332 status = YPPUSH_DBM; 333 goto out; 334 } 335 336 k.dptr = (char *)&order_key; 337 k.dsize = YP_LAST_LEN; 338 339 v = ypdb_fetch(db, k); 340 ypdb_close(db); 341 342 if (v.dptr == NULL) 343 *lordernum = 0; 344 else { 345 strncpy(order, v.dptr, v.dsize); 346 order[v.dsize] = '\0'; 347 *lordernum = (u_int)atoi((char *)&order); 348 } 349 350 out: 351 if ((status == YPPUSH_NOMAP) || (status == YPPUSH_DBM)) { 352 *lordernum = 0; 353 status = YPPUSH_SUCC; 354 } 355 356 return (status); 357 } 358 359 int 360 get_remote_ordernum(client, domain, map, lordernum, rordernum) 361 CLIENT *client; 362 char *domain, *map; 363 u_int lordernum, *rordernum; 364 { 365 int status; 366 367 status = yp_order_host(client, domain, map, (int *)rordernum); 368 369 if (status == 0) 370 if (*rordernum <= lordernum) 371 status = YPPUSH_AGE; 372 else 373 status = YPPUSH_SUCC; 374 375 return status; 376 } 377 378 void 379 get_map(client, domain, map, incallback) 380 CLIENT *client; 381 char *domain, *map; 382 struct ypall_callback *incallback; 383 { 384 385 (void)yp_all_host(client, domain, map, incallback); 386 } 387 388 DBM * 389 create_db(domain, map, temp_map) 390 char *domain, *map, *temp_map; 391 { 392 char db_temp[255]; 393 DBM *db; 394 395 snprintf(db_temp, sizeof(db_temp), "%s/%s/%s", 396 YP_DB_PATH, domain, temp_map); 397 db_temp[sizeof(db_temp) - 1] = '\0'; 398 399 db = ypdb_open(db_temp, O_RDWR|O_CREAT, 0444); 400 401 return db; 402 } 403 404 int 405 install_db(domain,map,temp_map) 406 char *domain, *map, *temp_map; 407 { 408 char db_name[255], db_temp[255]; 409 410 snprintf(db_name, sizeof(db_name), "%s/%s/%s%s", 411 YP_DB_PATH, domain, map, YPDB_SUFFIX); 412 db_name[sizeof(db_name) - 1] = '\0'; 413 414 snprintf(db_temp, sizeof(db_temp), "%s/%s/%s%s", 415 YP_DB_PATH, domain, temp_map, YPDB_SUFFIX); 416 db_temp[sizeof(db_temp) - 1] = '\0'; 417 418 if (rename(db_temp, db_name)) { 419 warn("can't rename `%s' -> `%s'", db_temp, db_name); 420 return YPPUSH_YPERR; 421 } 422 423 return YPPUSH_SUCC; 424 } 425 426 int 427 unlink_db(domain, map, temp_map) 428 char *domain, *map, *temp_map; 429 { 430 char db_temp[255]; 431 432 snprintf(db_temp, sizeof(db_temp), "%s/%s/%s%s", 433 YP_DB_PATH, domain, temp_map, YPDB_SUFFIX); 434 db_temp[sizeof(db_temp) - 1] = '\0'; 435 436 if (unlink(db_temp)) { 437 warn("can't unlink `%s'", db_temp); 438 return YPPUSH_YPERR; 439 } 440 441 return YPPUSH_SUCC; 442 } 443 444 int 445 add_order(db, ordernum) 446 DBM *db; 447 u_int ordernum; 448 { 449 char datestr[11]; 450 datum key, val; 451 char keystr[] = YP_LAST_KEY; 452 int status; 453 454 snprintf(datestr, sizeof(datestr), "%010d", ordernum); 455 datestr[sizeof(datestr) - 1] = '\0'; 456 457 key.dptr = keystr; 458 key.dsize = strlen(keystr); 459 460 val.dptr = datestr; 461 val.dsize = strlen(datestr); 462 463 status = ypdb_store(db, key, val, YPDB_INSERT); 464 if(status >= 0) 465 status = YPPUSH_SUCC; 466 else 467 status = YPPUSH_DBM; 468 469 return (status); 470 } 471 472 int 473 add_master(client, domain, map, db) 474 CLIENT *client; 475 char *domain, *map; 476 DBM *db; 477 { 478 char keystr[] = YP_MASTER_KEY; 479 char *master; 480 int status; 481 datum key,val; 482 483 master = NULL; 484 485 /* Get MASTER */ 486 status = yp_master_host(client, domain, map, &master); 487 488 if (master != NULL) { 489 key.dptr = keystr; 490 key.dsize = strlen(keystr); 491 492 val.dptr = master; 493 val.dsize = strlen(master); 494 495 status = ypdb_store(db, key, val, YPDB_INSERT); 496 if (status >= 0) 497 status = YPPUSH_SUCC; 498 else 499 status = YPPUSH_DBM; 500 } 501 502 return status; 503 } 504 505 int 506 add_interdomain(client, domain, map, db) 507 CLIENT *client; 508 char *domain, *map; 509 DBM *db; 510 { 511 char keystr[] = YP_INTERDOMAIN_KEY; 512 char *value; 513 int vallen; 514 int status; 515 datum k, v; 516 517 /* Get INTERDOMAIN */ 518 k.dptr = keystr; 519 k.dsize = strlen(keystr); 520 521 status = yp_match_host(client, domain, map, 522 k.dptr, k.dsize, &value, &vallen); 523 524 if (status == 0 && value) { 525 v.dptr = value; 526 v.dsize = vallen; 527 528 if (v.dptr != NULL) { 529 status = ypdb_store(db, k, v, YPDB_INSERT); 530 if (status >= 0) 531 status = YPPUSH_SUCC; 532 else 533 status = YPPUSH_DBM; 534 } 535 } 536 537 return status; 538 } 539 540 int 541 add_secure(client, domain, map, db) 542 CLIENT *client; 543 char *domain, *map; 544 DBM *db; 545 { 546 char keystr[] = YP_SECURE_KEY; 547 char *value; 548 int vallen; 549 int status; 550 datum k, v; 551 552 /* Get SECURE */ 553 k.dptr = keystr; 554 k.dsize = strlen(keystr); 555 556 status = yp_match_host(client, domain, map, 557 k.dptr, k.dsize, &value, &vallen); 558 559 if (status > 0) { 560 v.dptr = value; 561 v.dsize = vallen; 562 563 if (v.dptr != NULL) { 564 status = ypdb_store(db, k, v, YPDB_INSERT); 565 if (status >= 0) 566 status = YPPUSH_SUCC; 567 else 568 status = YPPUSH_DBM; 569 } 570 } 571 572 return status; 573 } 574 575 int 576 send_clear(client) 577 CLIENT *client; 578 { 579 struct timeval tv; 580 int r; 581 int status; 582 583 status = YPPUSH_SUCC; 584 585 tv.tv_sec = 10; 586 tv.tv_usec = 0; 587 588 /* Send CLEAR */ 589 r = clnt_call(client, YPPROC_CLEAR, xdr_void, 0, xdr_void, 0, tv); 590 if (r != RPC_SUCCESS) { 591 clnt_perror(client, "yp_clear: clnt_call"); 592 status = YPPUSH_RPC; 593 } 594 595 return status; 596 } 597 598 int 599 send_reply(client, status, tid) 600 CLIENT *client; 601 int status, tid; 602 { 603 struct timeval tv; 604 struct ypresp_xfr resp; 605 int r; 606 607 tv.tv_sec = 10; 608 tv.tv_usec = 0; 609 610 resp.transid = tid; 611 resp.xfrstat = status; 612 613 /* Send XFRRESP */ 614 r = clnt_call(client, YPPUSHPROC_XFRRESP, xdr_ypresp_xfr, &resp, 615 xdr_void, 0, tv); 616 if (r != RPC_SUCCESS) { 617 clnt_perror(client, "yppushresp_xdr: clnt_call"); 618 status = YPPUSH_RPC; 619 } 620 621 return status; 622 } 623
Indexes created Sun Oct 12 09:09:55 GMT 2025