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s3:libsmb: Pass domain to remote_password_change()
[Samba.git] / source3 / utils / smbpasswd.c
blob4d7a3c739bc616235d96d8034d7b11ff93e2292b
1 /*
2 * Unix SMB/CIFS implementation.
3 * Copyright (C) Jeremy Allison 1995-1998
4 * Copyright (C) Tim Potter 2001
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 3 of the License, or (at your
9 * option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * more details.
15 *
16 * You should have received a copy of the GNU General Public License along with
17 * this program; if not, see <http://www.gnu.org/licenses/>. */
18
19 #include "includes.h"
20 #include "system/passwd.h"
21 #include "secrets.h"
22 #include "../librpc/gen_ndr/samr.h"
23 #include "../lib/util/util_pw.h"
24 #include "passdb.h"
25
26 /*
27 * Next two lines needed for SunOS and don't
28 * hurt anything else...
29 */
30 extern char *optarg;
31 extern int optind;
32
33 /* forced running in root-mode */
34 static bool got_username = False;
35 static bool stdin_passwd_get = False;
36 static fstring user_name;
37 static char *new_passwd = NULL;
38 static const char *remote_machine = NULL;
39
40 static fstring ldap_secret;
41
42
43 /*********************************************************
44 Print command usage on stderr and die.
45 **********************************************************/
46 static void usage(void)
47 {
48 printf("When run by root:\n");
49 printf(" smbpasswd [options] [username]\n");
50 printf("otherwise:\n");
51 printf(" smbpasswd [options]\n\n");
52
53 printf("options:\n");
54 printf(" -L local mode (must be first option)\n");
55 printf(" -h print this usage message\n");
56 printf(" -s use stdin for password prompt\n");
57 printf(" -c smb.conf file Use the given path to the smb.conf file\n");
58 printf(" -D LEVEL debug level\n");
59 printf(" -r MACHINE remote machine\n");
60 printf(" -U USER remote username\n");
61
62 printf("extra options when run by root or in local mode:\n");
63 printf(" -a add user\n");
64 printf(" -d disable user\n");
65 printf(" -e enable user\n");
66 printf(" -i interdomain trust account\n");
67 printf(" -m machine trust account\n");
68 printf(" -n set no password\n");
69 printf(" -W use stdin ldap admin password\n");
70 printf(" -w PASSWORD ldap admin password\n");
71 printf(" -x delete user\n");
72 printf(" -R ORDER name resolve order\n");
73
74 exit(1);
75 }
76
77 static void set_line_buffering(FILE *f)
78 {
79 setvbuf(f, NULL, _IOLBF, 0);
80 }
81
82 /*******************************************************************
83 Process command line options
84 ******************************************************************/
85
86 static int process_options(int argc, char **argv, int local_flags)
87 {
88 int ch;
89 const char *configfile = get_dyn_CONFIGFILE();
90
91 local_flags |= LOCAL_SET_PASSWORD;
92
93 ZERO_STRUCT(user_name);
94
95 user_name[0] = '\0';
96
97 while ((ch = getopt(argc, argv, "c:axdehminjr:sw:R:D:U:LW")) != EOF) {
98 switch(ch) {
99 case 'L':
100 if (getuid() != 0) {
101 fprintf(stderr, "smbpasswd -L can only be used by root.\n");
102 exit(1);
103 }
104 local_flags |= LOCAL_AM_ROOT;
105 break;
106 case 'c':
107 configfile = optarg;
108 set_dyn_CONFIGFILE(optarg);
109 break;
110 case 'a':
111 local_flags |= LOCAL_ADD_USER;
112 break;
113 case 'x':
114 local_flags |= LOCAL_DELETE_USER;
115 local_flags &= ~LOCAL_SET_PASSWORD;
116 break;
117 case 'd':
118 local_flags |= LOCAL_DISABLE_USER;
119 local_flags &= ~LOCAL_SET_PASSWORD;
120 break;
121 case 'e':
122 local_flags |= LOCAL_ENABLE_USER;
123 local_flags &= ~LOCAL_SET_PASSWORD;
124 break;
125 case 'm':
126 local_flags |= LOCAL_TRUST_ACCOUNT;
127 break;
128 case 'i':
129 local_flags |= LOCAL_INTERDOM_ACCOUNT;
130 break;
131 case 'j':
132 d_printf("See 'net join' for this functionality\n");
133 exit(1);
134 break;
135 case 'n':
136 local_flags |= LOCAL_SET_NO_PASSWORD;
137 local_flags &= ~LOCAL_SET_PASSWORD;
138 SAFE_FREE(new_passwd);
139 new_passwd = smb_xstrdup("NO PASSWORD");
140 break;
141 case 'r':
142 remote_machine = optarg;
143 break;
144 case 's':
145 set_line_buffering(stdin);
146 set_line_buffering(stdout);
147 set_line_buffering(stderr);
148 stdin_passwd_get = True;
149 break;
150 case 'w':
151 local_flags |= LOCAL_SET_LDAP_ADMIN_PW;
152 fstrcpy(ldap_secret, optarg);
153 break;
154 case 'R':
155 lp_set_cmdline("name resolve order", optarg);
156 break;
157 case 'D':
158 lp_set_cmdline("log level", optarg);
159 break;
160 case 'U': {
161 got_username = True;
162 fstrcpy(user_name, optarg);
163 break;
164 case 'W':
165 local_flags |= LOCAL_SET_LDAP_ADMIN_PW;
166 *ldap_secret = '\0';
167 break;
168 }
169 case 'h':
170 default:
171 usage();
172 }
173 }
174
175 argc -= optind;
176 argv += optind;
177
178 switch(argc) {
179 case 0:
180 if (!got_username)
181 fstrcpy(user_name, "");
182 break;
183 case 1:
184 if (!(local_flags & LOCAL_AM_ROOT)) {
185 usage();
186 } else {
187 if (got_username) {
188 usage();
189 } else {
190 fstrcpy(user_name, argv[0]);
191 }
192 }
193 break;
194 default:
195 usage();
196 }
197
198 if (!lp_load_global(configfile)) {
199 fprintf(stderr, "Can't load %s - run testparm to debug it\n",
200 configfile);
201 exit(1);
202 }
203
204 return local_flags;
205 }
206
207 /*************************************************************
208 Utility function to prompt for new password.
209 *************************************************************/
210 static char *prompt_for_new_password(bool stdin_get)
211 {
212 char *p;
213 fstring new_pw;
214
215 ZERO_ARRAY(new_pw);
216
217 p = get_pass("New SMB password:", stdin_get);
218 if (p == NULL) {
219 return NULL;
220 }
221
222 fstrcpy(new_pw, p);
223 SAFE_FREE(p);
224
225 p = get_pass("Retype new SMB password:", stdin_get);
226 if (p == NULL) {
227 return NULL;
228 }
229
230 if (strcmp(p, new_pw)) {
231 fprintf(stderr, "Mismatch - password unchanged.\n");
232 ZERO_ARRAY(new_pw);
233 SAFE_FREE(p);
234 return NULL;
235 }
236
237 return p;
238 }
239
240
241 /*************************************************************
242 Change a password either locally or remotely.
243 *************************************************************/
244
245 static NTSTATUS password_change(const char *remote_mach, char *username,
246 char *old_passwd, char *new_pw,
247 int local_flags)
248 {
249 NTSTATUS ret;
250 char *err_str = NULL;
251 char *msg_str = NULL;
252
253 if (remote_mach != NULL) {
254 if (local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER|
255 LOCAL_DISABLE_USER|LOCAL_ENABLE_USER|
256 LOCAL_TRUST_ACCOUNT|LOCAL_SET_NO_PASSWORD)) {
257 /* these things can't be done remotely yet */
258 fprintf(stderr, "Invalid remote operation!\n");
259 return NT_STATUS_UNSUCCESSFUL;
260 }
261 ret = remote_password_change(remote_mach,
262 NULL, username,
263 old_passwd, new_pw, &err_str);
264 } else {
265 ret = local_password_change(username, local_flags, new_pw,
266 &err_str, &msg_str);
267 }
268
269 if (msg_str) {
270 printf("%s", msg_str);
271 }
272 if (err_str) {
273 fprintf(stderr, "%s", err_str);
274 }
275 if (!NT_STATUS_IS_OK(ret) && !err_str) {
276 fprintf(stderr, "Failed to change password!\n");
277 }
278
279 SAFE_FREE(msg_str);
280 SAFE_FREE(err_str);
281 return ret;
282 }
283
284 /*******************************************************************
285 Store the LDAP admin password in secrets.tdb
286 ******************************************************************/
287 static bool store_ldap_admin_pw (char* pw)
288 {
289 if (!pw)
290 return False;
291
292 if (!secrets_init())
293 return False;
294
295 return secrets_store_ldap_pw(lp_ldap_admin_dn(talloc_tos()), pw);
296 }
297
298
299 /*************************************************************
300 Handle password changing for root.
301 *************************************************************/
302
303 static int process_root(int local_flags)
304 {
305 struct passwd *pwd;
306 int result = 0;
307 char *old_passwd = NULL;
308
309 if (local_flags & LOCAL_SET_LDAP_ADMIN_PW) {
310 char *ldap_admin_dn = lp_ldap_admin_dn(talloc_tos());
311 if ( ! *ldap_admin_dn ) {
312 DEBUG(0,("ERROR: 'ldap admin dn' not defined! Please check your smb.conf\n"));
313 goto done;
314 }
315
316 printf("Setting stored password for \"%s\" in secrets.tdb\n", ldap_admin_dn);
317 if ( ! *ldap_secret ) {
318 new_passwd = prompt_for_new_password(stdin_passwd_get);
319 if (new_passwd == NULL) {
320 fprintf(stderr, "Failed to read new password!\n");
321 exit(1);
322 }
323 fstrcpy(ldap_secret, new_passwd);
324 }
325 if (!store_ldap_admin_pw(ldap_secret)) {
326 DEBUG(0,("ERROR: Failed to store the ldap admin password!\n"));
327 }
328 goto done;
329 }
330
331 /* Ensure passdb startup(). */
332 if(!initialize_password_db(False, NULL)) {
333 DEBUG(0, ("Failed to open passdb!\n"));
334 exit(1);
335 }
336
337 /* Ensure we have a SAM sid. */
338 get_global_sam_sid();
339
340 /*
341 * Ensure both add/delete user are not set
342 * Ensure add/delete user and either remote machine or join domain are
343 * not both set.
344 */
345 if(((local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER)) == (LOCAL_ADD_USER|LOCAL_DELETE_USER)) ||
346 ((local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER)) &&
347 (remote_machine != NULL))) {
348 usage();
349 }
350
351 /* Only load interfaces if we are doing network operations. */
352
353 if (remote_machine) {
354 load_interfaces();
355 }
356
357 if (!user_name[0] && (pwd = getpwuid_alloc(talloc_tos(), geteuid()))) {
358 fstrcpy(user_name, pwd->pw_name);
359 TALLOC_FREE(pwd);
360 }
361
362 if (!user_name[0]) {
363 fprintf(stderr,"You must specify a username\n");
364 exit(1);
365 }
366
367 if (local_flags & LOCAL_TRUST_ACCOUNT) {
368 /* add the $ automatically */
369 static fstring buf;
370
371 /*
372 * Remove any trailing '$' before we
373 * generate the initial machine password.
374 */
375
376 if (user_name[strlen(user_name)-1] == '$') {
377 user_name[strlen(user_name)-1] = 0;
378 }
379
380 if (local_flags & LOCAL_ADD_USER) {
381 SAFE_FREE(new_passwd);
382 new_passwd = smb_xstrdup(user_name);
383 if (!strlower_m(new_passwd)) {
384 fprintf(stderr, "strlower_m %s failed\n",
385 new_passwd);
386 exit(1);
387 }
388 }
389
390 /*
391 * Now ensure the username ends in '$' for
392 * the machine add.
393 */
394
395 slprintf(buf, sizeof(buf)-1, "%s$", user_name);
396 strlcpy(user_name, buf, sizeof(user_name));
397 } else if (local_flags & LOCAL_INTERDOM_ACCOUNT) {
398 static fstring buf;
399
400 if ((local_flags & LOCAL_ADD_USER) && (new_passwd == NULL)) {
401 /*
402 * Prompt for trusting domain's account password
403 */
404 new_passwd = prompt_for_new_password(stdin_passwd_get);
405 if(!new_passwd) {
406 fprintf(stderr, "Unable to get newpassword.\n");
407 exit(1);
408 }
409 }
410
411 /* prepare uppercased and '$' terminated username */
412 slprintf(buf, sizeof(buf) - 1, "%s$", user_name);
413 strlcpy(user_name, buf, sizeof(user_name));
414
415 } else {
416
417 if (remote_machine != NULL) {
418 old_passwd = get_pass("Old SMB password:",stdin_passwd_get);
419 if(!old_passwd) {
420 fprintf(stderr, "Unable to get old password.\n");
421 exit(1);
422 }
423 }
424
425 if (!(local_flags & LOCAL_SET_PASSWORD)) {
426
427 /*
428 * If we are trying to enable a user, first we need to find out
429 * if they are using a modern version of the smbpasswd file that
430 * disables a user by just writing a flag into the file. If so
431 * then we can re-enable a user without prompting for a new
432 * password. If not (ie. they have a no stored password in the
433 * smbpasswd file) then we need to prompt for a new password.
434 */
435
436 if(local_flags & LOCAL_ENABLE_USER) {
437 struct samu *sampass = NULL;
438
439 sampass = samu_new( NULL );
440 if (!sampass) {
441 fprintf(stderr, "talloc fail for struct samu.\n");
442 exit(1);
443 }
444 if (!pdb_getsampwnam(sampass, user_name)) {
445 fprintf(stderr, "Failed to find user %s in passdb backend.\n",
446 user_name );
447 exit(1);
448 }
449
450 if(pdb_get_nt_passwd(sampass) == NULL) {
451 local_flags |= LOCAL_SET_PASSWORD;
452 }
453 TALLOC_FREE(sampass);
454 }
455 }
456
457 if((local_flags & LOCAL_SET_PASSWORD) && (new_passwd == NULL)) {
458
459 new_passwd = prompt_for_new_password(stdin_passwd_get);
460 if(!new_passwd) {
461 fprintf(stderr, "Unable to get new password.\n");
462 exit(1);
463 }
464 }
465 }
466
467 if (!NT_STATUS_IS_OK(password_change(remote_machine, user_name,
468 old_passwd, new_passwd,
469 local_flags))) {
470 result = 1;
471 goto done;
472 }
473
474 if(remote_machine) {
475 printf("Password changed for user %s on %s.\n", user_name, remote_machine );
476 } else if(!(local_flags & (LOCAL_ADD_USER|LOCAL_DISABLE_USER|LOCAL_ENABLE_USER|LOCAL_DELETE_USER|LOCAL_SET_NO_PASSWORD|LOCAL_SET_PASSWORD))) {
477 struct samu *sampass = NULL;
478
479 sampass = samu_new( NULL );
480 if (!sampass) {
481 fprintf(stderr, "talloc fail for struct samu.\n");
482 exit(1);
483 }
484
485 if (!pdb_getsampwnam(sampass, user_name)) {
486 fprintf(stderr, "Failed to find user %s in passdb backend.\n",
487 user_name );
488 exit(1);
489 }
490
491 printf("Password changed for user %s.", user_name );
492 if(pdb_get_acct_ctrl(sampass)&ACB_DISABLED) {
493 printf(" User has disabled flag set.");
494 }
495 if(pdb_get_acct_ctrl(sampass) & ACB_PWNOTREQ) {
496 printf(" User has no password flag set.");
497 }
498 printf("\n");
499 TALLOC_FREE(sampass);
500 }
501
502 done:
503 SAFE_FREE(old_passwd);
504 SAFE_FREE(new_passwd);
505 return result;
506 }
507
508
509 /*************************************************************
510 Handle password changing for non-root.
511 *************************************************************/
512
513 static int process_nonroot(int local_flags)
514 {
515 struct passwd *pwd = NULL;
516 int result = 0;
517 char *old_pw = NULL;
518 char *new_pw = NULL;
519
520 if (local_flags & ~(LOCAL_AM_ROOT | LOCAL_SET_PASSWORD)) {
521 /* Extra flags that we can't honor non-root */
522 usage();
523 }
524
525 if (!user_name[0]) {
526 pwd = getpwuid_alloc(talloc_tos(), getuid());
527 if (pwd) {
528 fstrcpy(user_name,pwd->pw_name);
529 TALLOC_FREE(pwd);
530 } else {
531 fprintf(stderr, "smbpasswd: cannot lookup user name for uid %u\n", (unsigned int)getuid());
532 exit(1);
533 }
534 }
535
536 /*
537 * A non-root user is always setting a password
538 * via a remote machine (even if that machine is
539 * localhost).
540 */
541
542 load_interfaces(); /* Delayed from main() */
543
544 if (remote_machine == NULL) {
545 remote_machine = "127.0.0.1";
546 }
547
548 if (remote_machine != NULL) {
549 old_pw = get_pass("Old SMB password:",stdin_passwd_get);
550 if (old_pw == NULL) {
551 fprintf(stderr, "Unable to get old password.\n");
552 exit(1);
553 }
554 }
555
556 if (!new_passwd) {
557 new_pw = prompt_for_new_password(stdin_passwd_get);
558 }
559 else
560 new_pw = smb_xstrdup(new_passwd);
561
562 if (!new_pw) {
563 fprintf(stderr, "Unable to get new password.\n");
564 exit(1);
565 }
566
567 if (!NT_STATUS_IS_OK(password_change(remote_machine, user_name, old_pw,
568 new_pw, 0))) {
569 result = 1;
570 goto done;
571 }
572
573 printf("Password changed for user %s\n", user_name);
574
575 done:
576 SAFE_FREE(old_pw);
577 SAFE_FREE(new_pw);
578
579 return result;
580 }
581
582
583
584 /*********************************************************
585 Start here.
586 **********************************************************/
587 int main(int argc, char **argv)
588 {
589 TALLOC_CTX *frame = talloc_stackframe();
590 int local_flags = 0;
591 int ret;
592
593 #if defined(HAVE_SET_AUTH_PARAMETERS)
594 set_auth_parameters(argc, argv);
595 #endif /* HAVE_SET_AUTH_PARAMETERS */
596
597 if (getuid() == 0) {
598 local_flags = LOCAL_AM_ROOT;
599 }
600
601 smb_init_locale();
602
603 local_flags = process_options(argc, argv, local_flags);
604
605 setup_logging("smbpasswd", DEBUG_STDERR);
606
607 /*
608 * Set the machine NETBIOS name if not already
609 * set from the config file.
610 */
611
612 if (!init_names())
613 return 1;
614
615 /* Check the effective uid - make sure we are not setuid */
616 if (is_setuid_root()) {
617 fprintf(stderr, "smbpasswd must *NOT* be setuid root.\n");
618 exit(1);
619 }
620
621 if (local_flags & LOCAL_AM_ROOT) {
622 bool ok;
623
624 ok = secrets_init();
625 if (!ok) {
626 return 1;
627 }
628 ret = process_root(local_flags);
629 } else {
630 ret = process_nonroot(local_flags);
631 }
632 TALLOC_FREE(frame);
633 return ret;
634 }
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