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 (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright 2017 Nexenta Systems, Inc. All rights reserved.
24 */
25
26 #include <sys/types.h>
27 #include <sys/sockio.h>
28 #include <sys/socket.h>
29 #include <sys/utsname.h>
30
31 #include <stdarg.h>
32 #include <unistd.h>
33 #include <stdlib.h>
34 #include <time.h>
35 #include <synch.h>
36 #include <syslog.h>
37 #include <string.h>
38 #include <strings.h>
39 #include <errno.h>
40 #include <net/if.h>
41 #include <netdb.h>
42 #include <netinet/in.h>
43 #include <arpa/nameser.h>
44 #include <resolv.h>
45
46 #include <smbsrv/smbinfo.h>
47 #include <smbsrv/netbios.h>
48 #include <smbsrv/libsmb.h>
49 #include <assert.h>
50
51 static mutex_t seqnum_mtx;
52
53 /*
54 * IPC connection information that may be passed to the SMB Redirector.
55 */
56 typedef struct {
57 char user[SMB_USERNAME_MAXLEN];
58 uint8_t passwd[SMBAUTH_HASH_SZ];
59 } smb_ipc_t;
60
61 static smb_ipc_t ipc_info;
62 static smb_ipc_t ipc_orig_info;
63 static rwlock_t smb_ipc_lock;
64
65 /*
66 * These three parameters are all related:
67 * skc_initial_credits
68 * skc_maximum_credits
69 * skc_maxworkers (max worker threads)
70 * They must be in non-decreasing order. Get the values in order:
71 * maxworkers, maximum_credits, initial_credits
72 * enforcing maximum values and relations as we go. Then in the
73 * opposite order check minimum values and relations.
74 *
75 * smb_config_getnum puts a zero in the &citem if it fails getting
76 * the parameter value. When fetch parameters for which zero is OK,
77 * the return code is intentionally ignored.
78 */
79 void
80 smb_load_kconfig(smb_kmod_cfg_t *kcfg)
81 {
82 struct utsname uts;
83 int64_t citem;
84 int rc;
85
86 bzero(kcfg, sizeof (smb_kmod_cfg_t));
87
88 /*
89 * skc_maxworkers (max. no. of taskq worker threads)
90 */
91 rc = smb_config_getnum(SMB_CI_MAX_WORKERS, &citem);
92 if (rc != SMBD_SMF_OK)
93 citem = SMB_PI_MAX_WORKERS_DEF;
94 if (citem > SMB_PI_MAX_WORKERS_MAX)
95 citem = SMB_PI_MAX_WORKERS_MAX;
96 kcfg->skc_maxworkers = (uint32_t)citem;
97
98 /*
99 * The largest number of credits we let a single client have.
100 * It never makes sense for this to be > max_workers
101 */
102 rc = smb_config_getnum(SMB_CI_MAXIMUM_CREDITS, &citem);
103 if (rc != SMBD_SMF_OK)
104 citem = SMB_PI_MAXIMUM_CREDITS_DEF;
105 if (citem > SMB_PI_MAXIMUM_CREDITS_MAX)
106 citem = SMB_PI_MAXIMUM_CREDITS_MAX;
107 kcfg->skc_maximum_credits = (uint16_t)citem;
108 if (kcfg->skc_maximum_credits > kcfg->skc_maxworkers)
109 kcfg->skc_maximum_credits = (uint16_t)kcfg->skc_maxworkers;
110
111 /*
112 * The number of credits we give a client initially.
113 * Should be enough for a "light" workload, as the
114 * client will request additional credits when the
115 * workload increases. Must be <= maximum_credits.
116 */
117 rc = smb_config_getnum(SMB_CI_INITIAL_CREDITS, &citem);
118 if (rc != SMBD_SMF_OK)
119 citem = SMB_PI_INITIAL_CREDITS_DEF;
120 if (citem > SMB_PI_INITIAL_CREDITS_MAX)
121 citem = SMB_PI_INITIAL_CREDITS_MAX;
122 kcfg->skc_initial_credits = (uint16_t)citem;
123 if (kcfg->skc_initial_credits > kcfg->skc_maximum_credits)
124 kcfg->skc_initial_credits = kcfg->skc_maximum_credits;
125
126 /*
127 * Now enforce minimums, smaller to larger.
128 */
129 if (kcfg->skc_initial_credits < SMB_PI_INITIAL_CREDITS_MIN)
130 kcfg->skc_initial_credits = SMB_PI_INITIAL_CREDITS_MIN;
131
132 if (kcfg->skc_maximum_credits < SMB_PI_MAXIMUM_CREDITS_MIN)
133 kcfg->skc_maximum_credits = SMB_PI_MAXIMUM_CREDITS_MIN;
134 if (kcfg->skc_maximum_credits < kcfg->skc_initial_credits)
135 kcfg->skc_maximum_credits = kcfg->skc_initial_credits;
136
137 if (kcfg->skc_maxworkers < SMB_PI_MAX_WORKERS_MIN)
138 kcfg->skc_maxworkers = SMB_PI_MAX_WORKERS_MIN;
139 if (kcfg->skc_maxworkers < kcfg->skc_maximum_credits)
140 kcfg->skc_maxworkers = kcfg->skc_maximum_credits;
141
142 (void) smb_config_getnum(SMB_CI_KEEPALIVE, &citem);
143 kcfg->skc_keepalive = (uint32_t)citem;
144 if ((kcfg->skc_keepalive != 0) &&
145 (kcfg->skc_keepalive < SMB_PI_KEEP_ALIVE_MIN))
146 kcfg->skc_keepalive = SMB_PI_KEEP_ALIVE_MIN;
147
148 (void) smb_config_getnum(SMB_CI_MAX_CONNECTIONS, &citem);
149 kcfg->skc_maxconnections = (uint32_t)citem;
150 kcfg->skc_restrict_anon = smb_config_getbool(SMB_CI_RESTRICT_ANON);
151 kcfg->skc_signing_enable = smb_config_getbool(SMB_CI_SIGNING_ENABLE);
152 kcfg->skc_signing_required = smb_config_getbool(SMB_CI_SIGNING_REQD);
153 kcfg->skc_netbios_enable = smb_config_getbool(SMB_CI_NETBIOS_ENABLE);
154 kcfg->skc_ipv6_enable = smb_config_getbool(SMB_CI_IPV6_ENABLE);
155 kcfg->skc_print_enable = smb_config_getbool(SMB_CI_PRINT_ENABLE);
156 kcfg->skc_oplock_enable = smb_config_getbool(SMB_CI_OPLOCK_ENABLE);
157 kcfg->skc_sync_enable = smb_config_getbool(SMB_CI_SYNC_ENABLE);
158 kcfg->skc_traverse_mounts = smb_config_getbool(SMB_CI_TRAVERSE_MOUNTS);
159 kcfg->skc_max_protocol = smb_config_get_max_protocol();
160 kcfg->skc_min_protocol = smb_config_get_min_protocol();
161 kcfg->skc_secmode = smb_config_get_secmode();
162 kcfg->skc_encrypt = smb_config_get_require(SMB_CI_ENCRYPT);
163
164 (void) smb_getdomainname(kcfg->skc_nbdomain,
165 sizeof (kcfg->skc_nbdomain));
166 (void) smb_getfqdomainname(kcfg->skc_fqdn,
167 sizeof (kcfg->skc_fqdn));
168 (void) smb_getnetbiosname(kcfg->skc_hostname,
169 sizeof (kcfg->skc_hostname));
170 (void) smb_config_getstr(SMB_CI_SYS_CMNT, kcfg->skc_system_comment,
171 sizeof (kcfg->skc_system_comment));
172 smb_config_get_version(&kcfg->skc_version);
173 kcfg->skc_execflags = smb_config_get_execinfo(NULL, NULL, 0);
174 if (smb_config_get_localuuid(kcfg->skc_machine_uuid) < 0) {
175 syslog(LOG_ERR, "smb_load_kconfig: no machine_uuid");
176 uuid_generate_time(kcfg->skc_machine_uuid);
177 }
178 /* skc_negtok, skc_negtok_len: see smbd_authsvc.c */
179
180 (void) uname(&uts);
181 (void) snprintf(kcfg->skc_native_os, sizeof (kcfg->skc_native_os),
182 "%s %s %s", uts.sysname, uts.release, uts.version);
183
184 (void) strlcpy(kcfg->skc_native_lm, "Native SMB service",
185 sizeof (kcfg->skc_native_lm));
186 }
187
188 /*
189 * Get the current system NetBIOS name. The hostname is truncated at
190 * the first `.` or 15 bytes, whichever occurs first, and converted
191 * to uppercase (by smb_gethostname). Text that appears after the
192 * first '.' is considered to be part of the NetBIOS scope.
193 *
194 * Returns 0 on success, otherwise -1 to indicate an error.
195 */
196 int
197 smb_getnetbiosname(char *buf, size_t buflen)
198 {
199 if (smb_gethostname(buf, buflen, SMB_CASE_UPPER) != 0)
200 return (-1);
201
202 if (buflen >= NETBIOS_NAME_SZ)
203 buf[NETBIOS_NAME_SZ - 1] = '\0';
204
205 return (0);
206 }
207
208 /*
209 * Get the SAM account of the current system.
210 * Returns 0 on success, otherwise, -1 to indicate an error.
211 */
212 int
213 smb_getsamaccount(char *buf, size_t buflen)
214 {
215 if (smb_getnetbiosname(buf, buflen - 1) != 0)
216 return (-1);
217
218 (void) strlcat(buf, "$", buflen);
219 return (0);
220 }
221
222 /*
223 * Get the current system node name. The returned name is guaranteed
224 * to be null-terminated (gethostname may not null terminate the name).
225 * If the hostname has been fully-qualified for some reason, the domain
226 * part will be removed. The returned hostname is converted to the
227 * specified case (lower, upper, or preserved).
228 *
229 * If gethostname fails, the returned buffer will contain an empty
230 * string.
231 */
232 int
233 smb_gethostname(char *buf, size_t buflen, smb_caseconv_t which)
234 {
235 char *p;
236
237 if (buf == NULL || buflen == 0)
238 return (-1);
239
240 if (gethostname(buf, buflen) != 0) {
241 *buf = '\0';
242 return (-1);
243 }
244
245 buf[buflen - 1] = '\0';
246
247 if ((p = strchr(buf, '.')) != NULL)
248 *p = '\0';
249
250 switch (which) {
251 case SMB_CASE_LOWER:
252 (void) smb_strlwr(buf);
253 break;
254
255 case SMB_CASE_UPPER:
256 (void) smb_strupr(buf);
257 break;
258
259 case SMB_CASE_PRESERVE:
260 default:
261 break;
262 }
263
264 return (0);
265 }
266
267 /*
268 * Obtain the fully-qualified name for this machine in lower case. If
269 * the hostname is fully-qualified, accept it. Otherwise, try to find an
270 * appropriate domain name to append to the hostname.
271 */
272 int
273 smb_getfqhostname(char *buf, size_t buflen)
274 {
275 char hostname[MAXHOSTNAMELEN];
276 char domain[MAXHOSTNAMELEN];
277
278 hostname[0] = '\0';
279 domain[0] = '\0';
280
281 if (smb_gethostname(hostname, MAXHOSTNAMELEN,
282 SMB_CASE_LOWER) != 0)
283 return (-1);
284
285 if (smb_getfqdomainname(domain, MAXHOSTNAMELEN) != 0)
286 return (-1);
287
288 if (hostname[0] == '\0')
289 return (-1);
290
291 if (domain[0] == '\0') {
292 (void) strlcpy(buf, hostname, buflen);
293 return (0);
294 }
295
296 (void) snprintf(buf, buflen, "%s.%s", hostname, domain);
297 return (0);
298 }
299
300 /*
301 * smb_getdomainname
302 *
303 * Returns NETBIOS name of the domain if the system is in domain
304 * mode. Or returns workgroup name if the system is in workgroup
305 * mode.
306 */
307 int
308 smb_getdomainname(char *buf, size_t buflen)
309 {
310 int rc;
311
312 if (buf == NULL || buflen == 0)
313 return (-1);
314
315 *buf = '\0';
316 rc = smb_config_getstr(SMB_CI_DOMAIN_NAME, buf, buflen);
317
318 if ((rc != SMBD_SMF_OK) || (*buf == '\0'))
319 return (-1);
320
321 return (0);
322 }
323
324 /*
325 * smb_getfqdomainname
326 *
327 * In the system is in domain mode, the dns_domain property value
328 * is returned. Otherwise, it returns the local domain obtained via
329 * resolver.
330 *
331 * Returns 0 upon success. Otherwise, returns -1.
332 */
333 int
334 smb_getfqdomainname(char *buf, size_t buflen)
335 {
336 struct __res_state res_state;
337 int rc;
338
339 if (buf == NULL || buflen == 0)
340 return (-1);
341
342 *buf = '\0';
343 if (smb_config_get_secmode() == SMB_SECMODE_DOMAIN) {
344 rc = smb_config_getstr(SMB_CI_DOMAIN_FQDN, buf, buflen);
345
346 if ((rc != SMBD_SMF_OK) || (*buf == '\0'))
347 return (-1);
348 } else {
349 bzero(&res_state, sizeof (struct __res_state));
350 if (res_ninit(&res_state))
351 return (-1);
352
353 if (*res_state.defdname == '\0') {
354 res_ndestroy(&res_state);
355 return (-1);
356 }
357
358 (void) strlcpy(buf, res_state.defdname, buflen);
359 res_ndestroy(&res_state);
360 rc = 0;
361 }
362
363 return (rc);
364 }
365
366
367 /*
368 * smb_set_machine_passwd
369 *
370 * This function should be used when setting the machine password property.
371 * The associated sequence number is incremented.
372 */
373 static int
374 smb_set_machine_passwd(char *passwd)
375 {
376 int64_t num;
377 int rc = -1;
378
379 if (smb_config_set(SMB_CI_MACHINE_PASSWD, passwd) != SMBD_SMF_OK)
380 return (-1);
381
382 (void) mutex_lock(&seqnum_mtx);
383 (void) smb_config_getnum(SMB_CI_KPASSWD_SEQNUM, &num);
384 if (smb_config_setnum(SMB_CI_KPASSWD_SEQNUM, ++num)
385 == SMBD_SMF_OK)
386 rc = 0;
387 (void) mutex_unlock(&seqnum_mtx);
388 return (rc);
389 }
390
391 static int
392 smb_get_machine_passwd(uint8_t *buf, size_t buflen)
393 {
394 char pwd[SMB_PASSWD_MAXLEN + 1];
395 int rc;
396
397 if (buflen < SMBAUTH_HASH_SZ)
398 return (-1);
399
400 rc = smb_config_getstr(SMB_CI_MACHINE_PASSWD, pwd, sizeof (pwd));
401 if ((rc != SMBD_SMF_OK) || *pwd == '\0')
402 return (-1);
403
404 if (smb_auth_ntlm_hash(pwd, buf) != 0)
405 return (-1);
406
407 return (rc);
408 }
409
410 /*
411 * Set up IPC connection credentials.
412 */
413 void
414 smb_ipc_init(void)
415 {
416 int rc;
417
418 (void) rw_wrlock(&smb_ipc_lock);
419 bzero(&ipc_info, sizeof (smb_ipc_t));
420 bzero(&ipc_orig_info, sizeof (smb_ipc_t));
421
422 (void) smb_getsamaccount(ipc_info.user, SMB_USERNAME_MAXLEN);
423 rc = smb_get_machine_passwd(ipc_info.passwd, SMBAUTH_HASH_SZ);
424 if (rc != 0)
425 *ipc_info.passwd = 0;
426 (void) rw_unlock(&smb_ipc_lock);
427
428 }
429
430 /*
431 * Set the IPC username and password hash in memory. If the domain
432 * join succeeds, the credentials will be committed for use with
433 * authenticated IPC. Otherwise, they should be rolled back.
434 */
435 void
436 smb_ipc_set(char *plain_user, uint8_t *passwd_hash)
437 {
438 (void) rw_wrlock(&smb_ipc_lock);
439 (void) strlcpy(ipc_info.user, plain_user, sizeof (ipc_info.user));
440 (void) memcpy(ipc_info.passwd, passwd_hash, SMBAUTH_HASH_SZ);
441 (void) rw_unlock(&smb_ipc_lock);
442
443 }
444
445 /*
446 * Save the host credentials to be used for authenticated IPC.
447 * The credentials are also saved to the original IPC info as
448 * rollback data in case the join domain process fails later.
449 */
450 void
451 smb_ipc_commit(void)
452 {
453 (void) rw_wrlock(&smb_ipc_lock);
454 (void) smb_getsamaccount(ipc_info.user, SMB_USERNAME_MAXLEN);
455 (void) smb_get_machine_passwd(ipc_info.passwd, SMBAUTH_HASH_SZ);
456 (void) memcpy(&ipc_orig_info, &ipc_info, sizeof (smb_ipc_t));
457 (void) rw_unlock(&smb_ipc_lock);
458 }
459
460 /*
461 * Restore the original credentials
462 */
463 void
464 smb_ipc_rollback(void)
465 {
466 (void) rw_wrlock(&smb_ipc_lock);
467 (void) strlcpy(ipc_info.user, ipc_orig_info.user,
468 sizeof (ipc_info.user));
469 (void) memcpy(ipc_info.passwd, ipc_orig_info.passwd,
470 sizeof (ipc_info.passwd));
471 (void) rw_unlock(&smb_ipc_lock);
472 }
473
474 void
475 smb_ipc_get_user(char *buf, size_t buflen)
476 {
477 (void) rw_rdlock(&smb_ipc_lock);
478 (void) strlcpy(buf, ipc_info.user, buflen);
479 (void) rw_unlock(&smb_ipc_lock);
480 }
481
482 void
483 smb_ipc_get_passwd(uint8_t *buf, size_t buflen)
484 {
485 if (buflen < SMBAUTH_HASH_SZ)
486 return;
487
488 (void) rw_rdlock(&smb_ipc_lock);
489 (void) memcpy(buf, ipc_info.passwd, SMBAUTH_HASH_SZ);
490 (void) rw_unlock(&smb_ipc_lock);
491 }
492
493 /*
494 * smb_match_netlogon_seqnum
495 *
496 * A sequence number is associated with each machine password property
497 * update and the netlogon credential chain setup. If the
498 * sequence numbers don't match, a NETLOGON credential chain
499 * establishment is required.
500 *
501 * Returns 0 if kpasswd_seqnum equals to netlogon_seqnum. Otherwise,
502 * returns -1.
503 */
504 boolean_t
505 smb_match_netlogon_seqnum(void)
506 {
507 int64_t setpasswd_seqnum;
508 int64_t netlogon_seqnum;
509
510 (void) mutex_lock(&seqnum_mtx);
511 (void) smb_config_getnum(SMB_CI_KPASSWD_SEQNUM, &setpasswd_seqnum);
512 (void) smb_config_getnum(SMB_CI_NETLOGON_SEQNUM, &netlogon_seqnum);
513 (void) mutex_unlock(&seqnum_mtx);
514 return (setpasswd_seqnum == netlogon_seqnum);
515 }
516
517 /*
518 * smb_setdomainprops
519 *
520 * This function should be called after joining an AD to
521 * set all the domain related SMF properties.
522 *
523 * The kpasswd_domain property is the AD domain to which the system
524 * is joined via kclient. If this function is invoked by the SMB
525 * daemon, fqdn should be set to NULL.
526 */
527 int
528 smb_setdomainprops(char *fqdn, char *server, char *passwd)
529 {
530 if (server == NULL || passwd == NULL)
531 return (-1);
532
533 if ((*server == '\0') || (*passwd == '\0'))
534 return (-1);
535
536 if (fqdn && (smb_config_set(SMB_CI_KPASSWD_DOMAIN, fqdn) != 0))
537 return (-1);
538
539 if (smb_config_set(SMB_CI_KPASSWD_SRV, server) != 0)
540 return (-1);
541
542 if (smb_set_machine_passwd(passwd) != 0) {
543 syslog(LOG_ERR, "smb_setdomainprops: failed to set"
544 " machine account password");
545 return (-1);
546 }
547
548 /*
549 * If we successfully create a trust account, we mark
550 * ourselves as a domain member in the environment so
551 * that we use the SAMLOGON version of the NETLOGON
552 * PDC location protocol.
553 */
554 (void) smb_config_setbool(SMB_CI_DOMAIN_MEMB, B_TRUE);
555
556 return (0);
557 }
558
559 /*
560 * smb_update_netlogon_seqnum
561 *
562 * This function should only be called upon a successful netlogon
563 * credential chain establishment to set the sequence number of the
564 * netlogon to match with that of the kpasswd.
565 */
566 void
567 smb_update_netlogon_seqnum(void)
568 {
569 int64_t num;
570
571 (void) mutex_lock(&seqnum_mtx);
572 (void) smb_config_getnum(SMB_CI_KPASSWD_SEQNUM, &num);
573 (void) smb_config_setnum(SMB_CI_NETLOGON_SEQNUM, num);
574 (void) mutex_unlock(&seqnum_mtx);
575 }
576
577
578 /*
579 * Temporary fbt for dtrace until user space sdt enabled.
580 */
581 void
582 smb_tracef(const char *fmt, ...)
583 {
584 va_list ap;
585 char buf[128];
586
587 va_start(ap, fmt);
588 (void) vsnprintf(buf, 128, fmt, ap);
589 va_end(ap);
590
591 smb_trace(buf);
592 }
593
594 /*
595 * Temporary fbt for dtrace until user space sdt enabled.
596 *
597 * This function is designed to be used with dtrace, i.e. see:
598 * usr/src/cmd/smbsrv/dtrace/smbd-all.d
599 *
600 * Outside of dtrace, the messages passed to this function usually
601 * lack sufficient context to be useful, so we don't log them.
602 */
603 /* ARGSUSED */
604 void
605 smb_trace(const char *s)
606 {
607 }
608
609 /*
610 * smb_tonetbiosname
611 *
612 * Creates a NetBIOS name based on the given name and suffix.
613 * NetBIOS name is 15 capital characters, padded with space if needed
614 * and the 16th byte is the suffix.
615 */
616 void
617 smb_tonetbiosname(char *name, char *nb_name, char suffix)
618 {
619 char tmp_name[NETBIOS_NAME_SZ];
620 smb_wchar_t wtmp_name[NETBIOS_NAME_SZ];
621 int len;
622 size_t rc;
623
624 len = 0;
625 rc = smb_mbstowcs(wtmp_name, (const char *)name, NETBIOS_NAME_SZ);
626
627 if (rc != (size_t)-1) {
628 wtmp_name[NETBIOS_NAME_SZ - 1] = 0;
629 rc = ucstooem(tmp_name, wtmp_name, NETBIOS_NAME_SZ,
630 OEM_CPG_850);
631 if (rc > 0)
632 len = strlen(tmp_name);
633 }
634
635 (void) memset(nb_name, ' ', NETBIOS_NAME_SZ - 1);
636 if (len) {
637 (void) smb_strupr(tmp_name);
638 (void) memcpy(nb_name, tmp_name, len);
639 }
640 nb_name[NETBIOS_NAME_SZ - 1] = suffix;
641 }
642
643 int
644 smb_get_nameservers(smb_inaddr_t *ips, int sz)
645 {
646 union res_sockaddr_union set[MAXNS];
647 int i, cnt;
648 struct __res_state res_state;
649 char ipstr[INET6_ADDRSTRLEN];
650
651 if (ips == NULL)
652 return (0);
653
654 bzero(&res_state, sizeof (struct __res_state));
655 if (res_ninit(&res_state) < 0)
656 return (0);
657
658 cnt = res_getservers(&res_state, set, MAXNS);
659 for (i = 0; i < cnt; i++) {
660 if (i >= sz)
661 break;
662 ips[i].a_family = AF_INET;
663 bcopy(&set[i].sin.sin_addr, &ips[i].a_ipv4, NS_INADDRSZ);
664 if (inet_ntop(AF_INET, &ips[i].a_ipv4, ipstr,
665 INET_ADDRSTRLEN)) {
666 syslog(LOG_DEBUG, "Found %s name server\n", ipstr);
667 continue;
668 }
669 ips[i].a_family = AF_INET6;
670 bcopy(&set[i].sin.sin_addr, &ips[i].a_ipv6, NS_IN6ADDRSZ);
671 if (inet_ntop(AF_INET6, &ips[i].a_ipv6, ipstr,
672 INET6_ADDRSTRLEN)) {
673 syslog(LOG_DEBUG, "Found %s name server\n", ipstr);
674 }
675 }
676 res_ndestroy(&res_state);
677 return (i);
678 }
679
680 /*
681 * smb_gethostbyname
682 *
683 * Looks up a host by the given name. The host entry can come
684 * from any of the sources for hosts specified in the
685 * /etc/nsswitch.conf and the NetBIOS cache.
686 *
687 * XXX Invokes nbt_name_resolve API once the NBTD is integrated
688 * to look in the NetBIOS cache if getipnodebyname fails.
689 *
690 * Caller should invoke freehostent to free the returned hostent.
691 */
692 struct hostent *
693 smb_gethostbyname(const char *name, int *err_num)
694 {
695 struct hostent *h;
696
697 h = getipnodebyname(name, AF_INET, 0, err_num);
698 if ((h == NULL) || h->h_length != INADDRSZ)
699 h = getipnodebyname(name, AF_INET6, AI_DEFAULT, err_num);
700 return (h);
701 }
702
703 /*
704 * smb_gethostbyaddr
705 *
706 * Looks up a host by the given IP address. The host entry can come
707 * from any of the sources for hosts specified in the
708 * /etc/nsswitch.conf and the NetBIOS cache.
709 *
710 * XXX Invokes nbt API to resolve name by IP once the NBTD is integrated
711 * to look in the NetBIOS cache if getipnodebyaddr fails.
712 *
713 * Caller should invoke freehostent to free the returned hostent.
714 */
715 struct hostent *
716 smb_gethostbyaddr(const char *addr, int len, int type, int *err_num)
717 {
718 struct hostent *h;
719
720 h = getipnodebyaddr(addr, len, type, err_num);
721
722 return (h);
723 }