1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #include <synch.h> 27 #include <stdio.h> 28 #include <syslog.h> 29 #include <stdlib.h> 30 #include <arpa/inet.h> 31 #include <netdb.h> 32 33 #include <smbsrv/libsmbns.h> 34 #include <smbns_netbios.h> 35 36 #define NETBIOS_HTAB_SZ 128 37 #define NETBIOS_HKEY_SZ (NETBIOS_NAME_SZ + NETBIOS_DOMAIN_NAME_MAX) 38 39 #define NETBIOS_SAME_IP(addr1, addr2) \ 40 ((addr1)->sin.sin_addr.s_addr == (addr2)->sin.sin_addr.s_addr) 41 42 typedef char nb_key_t[NETBIOS_HKEY_SZ]; 43 static HT_HANDLE *smb_netbios_cache = 0; 44 static rwlock_t nb_cache_lock; 45 46 static void smb_strname(struct name_entry *name, char *buf, int bufsize); 47 static void hash_callback(HT_ITEM *item); 48 static int smb_netbios_match(const char *key1, const char *key2, size_t n); 49 static void smb_netbios_cache_key(char *key, unsigned char *name, 50 unsigned char *scope); 51 52 int 53 smb_netbios_cache_init(void) 54 { 55 (void) rw_wrlock(&nb_cache_lock); 56 if (smb_netbios_cache == NULL) { 57 smb_netbios_cache = ht_create_table(NETBIOS_HTAB_SZ, 58 NETBIOS_HKEY_SZ, HTHF_FIXED_KEY); 59 if (smb_netbios_cache == NULL) { 60 syslog(LOG_ERR, "nbns: cannot create name cache"); 61 (void) rw_unlock(&nb_cache_lock); 62 return (-1); 63 } 64 (void) ht_register_callback(smb_netbios_cache, hash_callback); 65 ht_set_cmpfn(smb_netbios_cache, smb_netbios_match); 66 } 67 (void) rw_unlock(&nb_cache_lock); 68 69 return (0); 70 } 71 72 void 73 smb_netbios_cache_fini(void) 74 { 75 (void) rw_wrlock(&nb_cache_lock); 76 ht_destroy_table(smb_netbios_cache); 77 smb_netbios_cache = NULL; 78 (void) rw_unlock(&nb_cache_lock); 79 } 80 81 void 82 smb_netbios_cache_clean(void) 83 { 84 (void) rw_wrlock(&nb_cache_lock); 85 (void) ht_clean_table(smb_netbios_cache); 86 (void) rw_unlock(&nb_cache_lock); 87 } 88 89 int 90 smb_netbios_cache_getfirst(nbcache_iter_t *iter) 91 { 92 HT_ITEM *item; 93 struct name_entry *entry; 94 95 (void) rw_rdlock(&nb_cache_lock); 96 item = ht_findfirst(smb_netbios_cache, &iter->nbc_hti); 97 if (item == NULL || item->hi_data == NULL) { 98 (void) rw_unlock(&nb_cache_lock); 99 return (-1); 100 } 101 102 entry = (struct name_entry *)item->hi_data; 103 (void) mutex_lock(&entry->mtx); 104 iter->nbc_entry = smb_netbios_name_dup(entry, 1); 105 (void) mutex_unlock(&entry->mtx); 106 107 (void) rw_unlock(&nb_cache_lock); 108 109 return ((iter->nbc_entry) ? 0 : -1); 110 } 111 112 int 113 smb_netbios_cache_getnext(nbcache_iter_t *iter) 114 { 115 HT_ITEM *item; 116 struct name_entry *entry; 117 118 (void) rw_rdlock(&nb_cache_lock); 119 item = ht_findnext(&iter->nbc_hti); 120 if (item == NULL || item->hi_data == NULL) { 121 (void) rw_unlock(&nb_cache_lock); 122 return (-1); 123 } 124 125 entry = (struct name_entry *)item->hi_data; 126 (void) mutex_lock(&entry->mtx); 127 iter->nbc_entry = smb_netbios_name_dup(entry, 1); 128 (void) mutex_unlock(&entry->mtx); 129 130 (void) rw_unlock(&nb_cache_lock); 131 132 return ((iter->nbc_entry) ? 0 : -1); 133 } 134 135 /* 136 * smb_netbios_cache_lookup 137 * 138 * Searches the name cache for the given entry, if found 139 * the entry will be locked before returning to caller 140 * so caller MUST unlock the entry after it's done with it. 141 */ 142 struct name_entry * 143 smb_netbios_cache_lookup(struct name_entry *name) 144 { 145 HT_ITEM *item; 146 nb_key_t key; 147 struct name_entry *entry = NULL; 148 unsigned char hostname[MAXHOSTNAMELEN]; 149 150 if (NETBIOS_NAME_IS_STAR(name->name)) { 151 /* Return our address */ 152 if (smb_getnetbiosname((char *)hostname, sizeof (hostname)) 153 != 0) 154 return (NULL); 155 156 smb_encode_netbios_name(hostname, 0x00, NULL, name); 157 } 158 159 (void) rw_rdlock(&nb_cache_lock); 160 161 smb_netbios_cache_key(key, name->name, name->scope); 162 item = ht_find_item(smb_netbios_cache, key); 163 if (item) { 164 entry = (struct name_entry *)item->hi_data; 165 (void) mutex_lock(&entry->mtx); 166 if ((entry->attributes & NAME_ATTR_CONFLICT) != 0) { 167 (void) mutex_unlock(&entry->mtx); 168 entry = NULL; 169 } 170 } 171 172 (void) rw_unlock(&nb_cache_lock); 173 return (entry); 174 } 175 176 void 177 smb_netbios_cache_unlock_entry(struct name_entry *name) 178 { 179 if (name) 180 (void) mutex_unlock(&name->mtx); 181 } 182 183 /* 184 * smb_netbios_cache_lookup_addr 185 * 186 * lookup the given 'name' in the cache and then checks 187 * if the address also matches with the found entry. 188 * 'name' is supposed to contain only one address. 189 * 190 * The found entry will be locked before returning to caller 191 * so caller MUST unlock the entry after it's done with it. 192 */ 193 struct name_entry * 194 smb_netbios_cache_lookup_addr(struct name_entry *name) 195 { 196 struct name_entry *entry = 0; 197 addr_entry_t *addr; 198 addr_entry_t *name_addr; 199 HT_ITEM *item; 200 nb_key_t key; 201 202 (void) rw_rdlock(&nb_cache_lock); 203 smb_netbios_cache_key(key, name->name, name->scope); 204 item = ht_find_item(smb_netbios_cache, key); 205 206 if (item && item->hi_data) { 207 name_addr = &name->addr_list; 208 entry = (struct name_entry *)item->hi_data; 209 (void) mutex_lock(&entry->mtx); 210 addr = &entry->addr_list; 211 do { 212 if (NETBIOS_SAME_IP(addr, name_addr)) { 213 /* note that entry lock isn't released here */ 214 (void) rw_unlock(&nb_cache_lock); 215 return (entry); 216 } 217 addr = addr->forw; 218 } while (addr != &entry->addr_list); 219 (void) mutex_unlock(&entry->mtx); 220 } 221 222 (void) rw_unlock(&nb_cache_lock); 223 return (0); 224 } 225 226 int 227 smb_netbios_cache_insert(struct name_entry *name) 228 { 229 struct name_entry *entry; 230 addr_entry_t *addr; 231 addr_entry_t *name_addr; 232 HT_ITEM *item; 233 nb_key_t key; 234 int rc; 235 236 /* No point in adding a name with IP address 255.255.255.255 */ 237 if (name->addr_list.sin.sin_addr.s_addr == 0xffffffff) 238 return (0); 239 240 (void) rw_wrlock(&nb_cache_lock); 241 smb_netbios_cache_key(key, name->name, name->scope); 242 item = ht_find_item(smb_netbios_cache, key); 243 244 if (item && item->hi_data) { 245 /* Name already exists */ 246 entry = (struct name_entry *)item->hi_data; 247 (void) mutex_lock(&entry->mtx); 248 249 name_addr = &name->addr_list; 250 addr = &entry->addr_list; 251 if (NETBIOS_SAME_IP(addr, name_addr) && 252 (addr->sin.sin_port == name_addr->sin.sin_port)) { 253 entry->attributes |= 254 name_addr->attributes & NAME_ATTR_LOCAL; 255 (void) mutex_unlock(&entry->mtx); 256 (void) rw_unlock(&nb_cache_lock); 257 return (0); 258 } 259 260 /* Was not primary: looks for others */ 261 for (addr = entry->addr_list.forw; 262 addr != &entry->addr_list; addr = addr->forw) { 263 if (NETBIOS_SAME_IP(addr, name_addr) && 264 (addr->sin.sin_port == name_addr->sin.sin_port)) { 265 (void) mutex_unlock(&entry->mtx); 266 (void) rw_unlock(&nb_cache_lock); 267 return (0); 268 } 269 } 270 271 if ((addr = malloc(sizeof (addr_entry_t))) != NULL) { 272 *addr = name->addr_list; 273 entry->attributes |= addr->attributes; 274 QUEUE_INSERT_TAIL(&entry->addr_list, addr); 275 rc = 0; 276 } else { 277 rc = -1; 278 } 279 280 (void) mutex_unlock(&entry->mtx); 281 (void) rw_unlock(&nb_cache_lock); 282 return (rc); 283 } 284 285 if ((entry = malloc(sizeof (struct name_entry))) == NULL) { 286 (void) rw_unlock(&nb_cache_lock); 287 return (-1); 288 } 289 290 *entry = *name; 291 entry->addr_list.forw = entry->addr_list.back = &entry->addr_list; 292 entry->attributes |= entry->addr_list.attributes; 293 (void) mutex_init(&entry->mtx, 0, 0); 294 if (ht_replace_item(smb_netbios_cache, key, entry) == 0) { 295 free(entry); 296 (void) rw_unlock(&nb_cache_lock); 297 return (-1); 298 } 299 300 (void) rw_unlock(&nb_cache_lock); 301 return (0); 302 } 303 304 305 void 306 smb_netbios_cache_delete(struct name_entry *name) 307 { 308 nb_key_t key; 309 HT_ITEM *item; 310 struct name_entry *entry; 311 312 (void) rw_wrlock(&nb_cache_lock); 313 smb_netbios_cache_key(key, name->name, name->scope); 314 item = ht_find_item(smb_netbios_cache, key); 315 if (item && item->hi_data) { 316 entry = (struct name_entry *)item->hi_data; 317 (void) mutex_lock(&entry->mtx); 318 ht_mark_delete(smb_netbios_cache, item); 319 (void) mutex_unlock(&entry->mtx); 320 } 321 (void) rw_unlock(&nb_cache_lock); 322 } 323 324 /* 325 * smb_netbios_cache_insert_list 326 * 327 * Insert a name with multiple addresses 328 */ 329 int 330 smb_netbios_cache_insert_list(struct name_entry *name) 331 { 332 struct name_entry entry; 333 addr_entry_t *addr; 334 335 addr = &name->addr_list; 336 do { 337 smb_init_name_struct(NETBIOS_EMPTY_NAME, 0, name->scope, 338 addr->sin.sin_addr.s_addr, 339 addr->sin.sin_port, 340 name->attributes, 341 addr->attributes, 342 &entry); 343 (void) memcpy(entry.name, name->name, NETBIOS_NAME_SZ); 344 entry.addr_list.refresh_ttl = entry.addr_list.ttl = 345 addr->refresh_ttl; 346 (void) smb_netbios_cache_insert(&entry); 347 addr = addr->forw; 348 } while (addr != &name->addr_list); 349 350 return (0); 351 } 352 353 void 354 smb_netbios_cache_update_entry(struct name_entry *entry, 355 struct name_entry *name) 356 { 357 addr_entry_t *addr; 358 addr_entry_t *name_addr; 359 360 addr = &entry->addr_list; 361 name_addr = &name->addr_list; 362 363 if (IS_UNIQUE(entry->attributes)) { 364 do { 365 addr->ttl = name_addr->ttl; 366 addr = addr->forw; 367 } while (addr != &entry->addr_list); 368 369 } else { 370 do { 371 if (NETBIOS_SAME_IP(addr, name_addr) && 372 (addr->sin.sin_port == name_addr->sin.sin_port)) { 373 addr->ttl = name_addr->ttl; 374 return; 375 } 376 addr = addr->forw; 377 } while (addr != &entry->addr_list); 378 } 379 } 380 381 /* 382 * smb_netbios_cache_status 383 * 384 * Scan the name cache and gather status for 385 * Node Status response for names in the given scope 386 */ 387 unsigned char * 388 smb_netbios_cache_status(unsigned char *buf, int bufsize, unsigned char *scope) 389 { 390 HT_ITERATOR hti; 391 HT_ITEM *item; 392 struct name_entry *name; 393 unsigned char *numnames; 394 unsigned char *scan; 395 unsigned char *scan_end; 396 397 scan = buf; 398 scan_end = scan + bufsize; 399 400 numnames = scan++; 401 *numnames = 0; 402 403 (void) rw_rdlock(&nb_cache_lock); 404 item = ht_findfirst(smb_netbios_cache, &hti); 405 do { 406 if (item == 0) 407 break; 408 409 if (item->hi_data == 0) 410 continue; 411 412 if ((scan + NETBIOS_NAME_SZ + 2) >= scan_end) 413 /* no room for adding next entry */ 414 break; 415 416 name = (struct name_entry *)item->hi_data; 417 (void) mutex_lock(&name->mtx); 418 419 if (IS_LOCAL(name->attributes) && 420 (strcasecmp((char *)scope, (char *)name->scope) == 0)) { 421 bcopy(name->name, scan, NETBIOS_NAME_SZ); 422 scan += NETBIOS_NAME_SZ; 423 *scan++ = PUBLIC_BITS(name->attributes) >> 8; 424 *scan++ = PUBLIC_BITS(name->attributes); 425 (*numnames)++; 426 } 427 428 (void) mutex_unlock(&name->mtx); 429 } while ((item = ht_findnext(&hti)) != 0); 430 (void) rw_unlock(&nb_cache_lock); 431 432 return (scan); 433 } 434 435 void 436 smb_netbios_cache_reset_ttl() 437 { 438 addr_entry_t *addr; 439 struct name_entry *name; 440 HT_ITERATOR hti; 441 HT_ITEM *item; 442 443 (void) rw_rdlock(&nb_cache_lock); 444 item = ht_findfirst(smb_netbios_cache, &hti); 445 do { 446 if (item == 0) 447 break; 448 449 if (item->hi_data == 0) 450 continue; 451 452 name = (struct name_entry *)item->hi_data; 453 (void) mutex_lock(&name->mtx); 454 455 addr = &name->addr_list; 456 do { 457 if (addr->ttl < 1) { 458 if (addr->refresh_ttl) 459 addr->ttl = addr->refresh_ttl; 460 else 461 addr->refresh_ttl = addr->ttl = 462 TO_SECONDS(DEFAULT_TTL); 463 } 464 addr = addr->forw; 465 } while (addr != &name->addr_list); 466 467 (void) mutex_unlock(&name->mtx); 468 } while ((item = ht_findnext(&hti)) != 0); 469 (void) rw_unlock(&nb_cache_lock); 470 } 471 472 /* 473 * Returns TRUE when given name is added to the refresh queue 474 * FALSE if not. 475 */ 476 static boolean_t 477 smb_netbios_cache_insrefq(name_queue_t *refq, HT_ITEM *item) 478 { 479 struct name_entry *name; 480 struct name_entry *refent; 481 482 name = (struct name_entry *)item->hi_data; 483 484 if (IS_LOCAL(name->attributes)) { 485 if (IS_UNIQUE(name->attributes)) { 486 refent = smb_netbios_name_dup(name, 1); 487 if (refent) 488 QUEUE_INSERT_TAIL(&refq->head, refent) 489 490 /* next name */ 491 return (B_TRUE); 492 } 493 } else { 494 ht_mark_delete(smb_netbios_cache, item); 495 refent = smb_netbios_name_dup(name, 0); 496 if (refent) 497 QUEUE_INSERT_TAIL(&refq->head, refent) 498 499 /* next name */ 500 return (B_TRUE); 501 } 502 503 return (B_FALSE); 504 } 505 506 /* 507 * smb_netbios_cache_refresh 508 * 509 * Scans the name cache and add all local unique names 510 * and non-local names the passed refresh queue. Non- 511 * local names will also be marked as deleted. 512 * 513 * NOTE that the caller MUST protect the queue using 514 * its mutex 515 */ 516 void 517 smb_netbios_cache_refresh(name_queue_t *refq) 518 { 519 struct name_entry *name; 520 addr_entry_t *addr; 521 HT_ITERATOR hti; 522 HT_ITEM *item; 523 524 bzero(&refq->head, sizeof (refq->head)); 525 refq->head.forw = refq->head.back = &refq->head; 526 527 (void) rw_rdlock(&nb_cache_lock); 528 item = ht_findfirst(smb_netbios_cache, &hti); 529 do { /* name loop */ 530 if (item == 0) 531 break; 532 533 if (item->hi_data == 0) 534 continue; 535 536 name = (struct name_entry *)item->hi_data; 537 (void) mutex_lock(&name->mtx); 538 539 addr = &name->addr_list; 540 do { /* address loop */ 541 if (addr->ttl > 0) { 542 addr->ttl--; 543 if (addr->ttl == 0) { 544 if (smb_netbios_cache_insrefq(refq, 545 item)) 546 break; 547 } 548 } 549 addr = addr->forw; 550 } while (addr != &name->addr_list); 551 552 (void) mutex_unlock(&name->mtx); 553 } while ((item = ht_findnext(&hti)) != 0); 554 (void) rw_unlock(&nb_cache_lock); 555 } 556 557 /* 558 * smb_netbios_cache_delete_locals 559 * 560 * Scans the name cache and add all local names to 561 * the passed delete queue. 562 * 563 * NOTE that the caller MUST protect the queue using 564 * its mutex 565 */ 566 void 567 smb_netbios_cache_delete_locals(name_queue_t *delq) 568 { 569 struct name_entry *entry; 570 struct name_entry *delent; 571 HT_ITERATOR hti; 572 HT_ITEM *item; 573 574 bzero(&delq->head, sizeof (delq->head)); 575 delq->head.forw = delq->head.back = &delq->head; 576 577 (void) rw_wrlock(&nb_cache_lock); 578 item = ht_findfirst(smb_netbios_cache, &hti); 579 do { 580 if (item == 0) 581 break; 582 583 if (item->hi_data == 0) 584 continue; 585 586 entry = (struct name_entry *)item->hi_data; 587 (void) mutex_lock(&entry->mtx); 588 589 if (IS_LOCAL(entry->attributes)) { 590 ht_mark_delete(smb_netbios_cache, item); 591 delent = smb_netbios_name_dup(entry, 1); 592 if (delent) 593 QUEUE_INSERT_TAIL(&delq->head, delent) 594 } 595 596 (void) mutex_unlock(&entry->mtx); 597 } while ((item = ht_findnext(&hti)) != 0); 598 (void) rw_unlock(&nb_cache_lock); 599 } 600 601 void 602 smb_netbios_name_freeaddrs(struct name_entry *entry) 603 { 604 addr_entry_t *addr; 605 606 if (entry == 0) 607 return; 608 609 while ((addr = entry->addr_list.forw) != &entry->addr_list) { 610 QUEUE_CLIP(addr); 611 free(addr); 612 } 613 } 614 615 /* 616 * smb_netbios_cache_count 617 * 618 * Returns the number of names in the cache 619 */ 620 int 621 smb_netbios_cache_count() 622 { 623 int cnt; 624 625 (void) rw_rdlock(&nb_cache_lock); 626 cnt = ht_get_total_items(smb_netbios_cache); 627 (void) rw_unlock(&nb_cache_lock); 628 629 return (cnt); 630 } 631 632 void 633 smb_netbios_cache_dump(FILE *fp) 634 { 635 struct name_entry *name; 636 HT_ITERATOR hti; 637 HT_ITEM *item; 638 639 (void) rw_rdlock(&nb_cache_lock); 640 641 if (ht_get_total_items(smb_netbios_cache) != 0) { 642 (void) fprintf(fp, "\n%-22s %-16s %-16s %s\n", 643 "Name", "Type", "Address", "TTL"); 644 (void) fprintf(fp, "%s%s\n", 645 "-------------------------------", 646 "------------------------------"); 647 } 648 649 item = ht_findfirst(smb_netbios_cache, &hti); 650 while (item) { 651 if (item->hi_data) { 652 name = (struct name_entry *)item->hi_data; 653 (void) mutex_lock(&name->mtx); 654 smb_netbios_name_dump(fp, name); 655 (void) mutex_unlock(&name->mtx); 656 } 657 item = ht_findnext(&hti); 658 } 659 (void) rw_unlock(&nb_cache_lock); 660 } 661 662 void 663 smb_netbios_name_dump(FILE *fp, struct name_entry *entry) 664 { 665 char buf[MAXHOSTNAMELEN]; 666 addr_entry_t *addr; 667 char *type; 668 int count = 0; 669 670 smb_strname(entry, buf, sizeof (buf)); 671 type = (IS_UNIQUE(entry->attributes)) ? "UNIQUE" : "GROUP"; 672 673 (void) fprintf(fp, "%s %-6s (0x%04x) ", buf, type, entry->attributes); 674 675 addr = &entry->addr_list; 676 do { 677 if (count == 0) 678 (void) fprintf(fp, "%-16s %d\n", 679 inet_ntoa(addr->sin.sin_addr), addr->ttl); 680 else 681 (void) fprintf(fp, "%-28s (0x%04x) %-16s %d\n", 682 " ", addr->attributes, 683 inet_ntoa(addr->sin.sin_addr), addr->ttl); 684 ++count; 685 addr = addr->forw; 686 } while (addr != &entry->addr_list); 687 } 688 689 void 690 smb_netbios_name_logf(struct name_entry *entry) 691 { 692 char namebuf[MAXHOSTNAMELEN]; 693 addr_entry_t *addr; 694 695 smb_strname(entry, namebuf, sizeof (namebuf)); 696 syslog(LOG_DEBUG, "%s flags=0x%x\n", namebuf, entry->attributes); 697 addr = &entry->addr_list; 698 do { 699 syslog(LOG_DEBUG, " %s ttl=%d flags=0x%x port=%d", 700 inet_ntoa(addr->sin.sin_addr), 701 addr->ttl, addr->attributes, 702 addr->sin.sin_port); 703 addr = addr->forw; 704 } while (addr && (addr != &entry->addr_list)); 705 } 706 707 /* 708 * smb_netbios_name_dup 709 * 710 * Duplicate the given name entry. If 'alladdr' is 0 only 711 * copy the primary address otherwise duplicate all the 712 * addresses. NOTE that the duplicate structure is not 713 * like a regular cache entry i.e. it's a contiguous block 714 * of memory and each addr structure doesn't have it's own 715 * allocated memory. So, the returned structure can be freed 716 * by one free call. 717 */ 718 struct name_entry * 719 smb_netbios_name_dup(struct name_entry *entry, int alladdr) 720 { 721 addr_entry_t *addr; 722 addr_entry_t *dup_addr; 723 struct name_entry *dup; 724 int addr_cnt = 0; 725 int size = 0; 726 727 if (alladdr) { 728 addr = entry->addr_list.forw; 729 while (addr && (addr != &entry->addr_list)) { 730 addr_cnt++; 731 addr = addr->forw; 732 } 733 } 734 735 size = sizeof (struct name_entry) + 736 (addr_cnt * sizeof (addr_entry_t)); 737 dup = (struct name_entry *)malloc(size); 738 if (dup == 0) 739 return (0); 740 741 bzero(dup, size); 742 743 dup->forw = dup->back = dup; 744 dup->attributes = entry->attributes; 745 (void) memcpy(dup->name, entry->name, NETBIOS_NAME_SZ); 746 (void) strlcpy((char *)dup->scope, (char *)entry->scope, 747 NETBIOS_DOMAIN_NAME_MAX); 748 dup->addr_list = entry->addr_list; 749 dup->addr_list.forw = dup->addr_list.back = &dup->addr_list; 750 751 if (alladdr == 0) 752 return (dup); 753 754 /* LINTED - E_BAD_PTR_CAST_ALIGN */ 755 dup_addr = (addr_entry_t *)((unsigned char *)dup + 756 sizeof (struct name_entry)); 757 758 addr = entry->addr_list.forw; 759 while (addr && (addr != &entry->addr_list)) { 760 *dup_addr = *addr; 761 QUEUE_INSERT_TAIL(&dup->addr_list, dup_addr); 762 addr = addr->forw; 763 dup_addr++; 764 } 765 766 return (dup); 767 } 768 769 static void 770 smb_strname(struct name_entry *entry, char *buf, int bufsize) 771 { 772 char tmp[MAXHOSTNAMELEN]; 773 char *p; 774 775 (void) snprintf(tmp, MAXHOSTNAMELEN, "%15.15s", entry->name); 776 if ((p = strchr(tmp, ' ')) != NULL) 777 *p = '\0'; 778 779 if (entry->scope[0] != '\0') { 780 (void) strlcat(tmp, ".", MAXHOSTNAMELEN); 781 (void) strlcat(tmp, (char *)entry->scope, MAXHOSTNAMELEN); 782 } 783 784 (void) snprintf(buf, bufsize, "%-16s <%02X>", tmp, entry->name[15]); 785 } 786 787 static void 788 hash_callback(HT_ITEM *item) 789 { 790 struct name_entry *entry; 791 792 if (item && item->hi_data) { 793 entry = (struct name_entry *)item->hi_data; 794 smb_netbios_name_freeaddrs(entry); 795 free(entry); 796 } 797 } 798 799 800 /*ARGSUSED*/ 801 static int 802 smb_netbios_match(const char *key1, const char *key2, size_t n) 803 { 804 int res; 805 806 res = bcmp(key1, key2, NETBIOS_NAME_SZ); 807 if (res == 0) { 808 /* Names are the same, compare scopes */ 809 res = strcmp(key1 + NETBIOS_NAME_SZ, key2 + NETBIOS_NAME_SZ); 810 } 811 812 return (res); 813 } 814 815 static void 816 smb_netbios_cache_key(char *key, unsigned char *name, unsigned char *scope) 817 { 818 bzero(key, NETBIOS_HKEY_SZ); 819 (void) memcpy(key, name, NETBIOS_NAME_SZ); 820 (void) memcpy(key + NETBIOS_NAME_SZ, scope, 821 strlen((const char *)scope)); 822 } 823