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s3: Fix vfs_zfsacl to compile.
[Samba.git] / source3 / utils / smbpasswd.c
blob3af7e56f7d4ec5af7a333f693536c273c9c3e45d
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 !defined(NSS_WRAPPER)
101 if (getuid() != 0) {
102 fprintf(stderr, "smbpasswd -L can only be used by root.\n");
103 exit(1);
104 }
105 #endif
106 local_flags |= LOCAL_AM_ROOT;
107 break;
108 case 'c':
109 configfile = optarg;
110 set_dyn_CONFIGFILE(optarg);
111 break;
112 case 'a':
113 local_flags |= LOCAL_ADD_USER;
114 break;
115 case 'x':
116 local_flags |= LOCAL_DELETE_USER;
117 local_flags &= ~LOCAL_SET_PASSWORD;
118 break;
119 case 'd':
120 local_flags |= LOCAL_DISABLE_USER;
121 local_flags &= ~LOCAL_SET_PASSWORD;
122 break;
123 case 'e':
124 local_flags |= LOCAL_ENABLE_USER;
125 local_flags &= ~LOCAL_SET_PASSWORD;
126 break;
127 case 'm':
128 local_flags |= LOCAL_TRUST_ACCOUNT;
129 break;
130 case 'i':
131 local_flags |= LOCAL_INTERDOM_ACCOUNT;
132 break;
133 case 'j':
134 d_printf("See 'net join' for this functionality\n");
135 exit(1);
136 break;
137 case 'n':
138 local_flags |= LOCAL_SET_NO_PASSWORD;
139 local_flags &= ~LOCAL_SET_PASSWORD;
140 new_passwd = smb_xstrdup("NO PASSWORD");
141 break;
142 case 'r':
143 remote_machine = optarg;
144 break;
145 case 's':
146 set_line_buffering(stdin);
147 set_line_buffering(stdout);
148 set_line_buffering(stderr);
149 stdin_passwd_get = True;
150 break;
151 case 'w':
152 local_flags |= LOCAL_SET_LDAP_ADMIN_PW;
153 fstrcpy(ldap_secret, optarg);
154 break;
155 case 'R':
156 lp_set_cmdline("name resolve order", optarg);
157 break;
158 case 'D':
159 lp_set_cmdline("log level", optarg);
160 break;
161 case 'U': {
162 got_username = True;
163 fstrcpy(user_name, optarg);
164 break;
165 case 'W':
166 local_flags |= LOCAL_SET_LDAP_ADMIN_PW;
167 *ldap_secret = '\0';
168 break;
169 }
170 case 'h':
171 default:
172 usage();
173 }
174 }
175
176 argc -= optind;
177 argv += optind;
178
179 switch(argc) {
180 case 0:
181 if (!got_username)
182 fstrcpy(user_name, "");
183 break;
184 case 1:
185 if (!(local_flags & LOCAL_AM_ROOT)) {
186 usage();
187 } else {
188 if (got_username) {
189 usage();
190 } else {
191 fstrcpy(user_name, argv[0]);
192 }
193 }
194 break;
195 default:
196 usage();
197 }
198
199 if (!lp_load_global(configfile)) {
200 fprintf(stderr, "Can't load %s - run testparm to debug it\n",
201 configfile);
202 exit(1);
203 }
204
205 return local_flags;
206 }
207
208 /*************************************************************
209 Utility function to prompt for new password.
210 *************************************************************/
211 static char *prompt_for_new_password(bool stdin_get)
212 {
213 char *p;
214 fstring new_pw;
215
216 ZERO_ARRAY(new_pw);
217
218 p = get_pass("New SMB password:", stdin_get);
219
220 fstrcpy(new_pw, p);
221 SAFE_FREE(p);
222
223 p = get_pass("Retype new SMB password:", stdin_get);
224
225 if (strcmp(p, new_pw)) {
226 fprintf(stderr, "Mismatch - password unchanged.\n");
227 ZERO_ARRAY(new_pw);
228 SAFE_FREE(p);
229 return NULL;
230 }
231
232 return p;
233 }
234
235
236 /*************************************************************
237 Change a password either locally or remotely.
238 *************************************************************/
239
240 static NTSTATUS password_change(const char *remote_mach, char *username,
241 char *old_passwd, char *new_pw,
242 int local_flags)
243 {
244 NTSTATUS ret;
245 char *err_str = NULL;
246 char *msg_str = NULL;
247
248 if (remote_mach != NULL) {
249 if (local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER|
250 LOCAL_DISABLE_USER|LOCAL_ENABLE_USER|
251 LOCAL_TRUST_ACCOUNT|LOCAL_SET_NO_PASSWORD)) {
252 /* these things can't be done remotely yet */
253 fprintf(stderr, "Invalid remote operation!\n");
254 return NT_STATUS_UNSUCCESSFUL;
255 }
256 ret = remote_password_change(remote_mach, username,
257 old_passwd, new_pw, &err_str);
258 } else {
259 ret = local_password_change(username, local_flags, new_pw,
260 &err_str, &msg_str);
261 }
262
263 if (msg_str) {
264 printf("%s", msg_str);
265 }
266 if (err_str) {
267 fprintf(stderr, "%s", err_str);
268 }
269 if (!NT_STATUS_IS_OK(ret) && !err_str) {
270 fprintf(stderr, "Failed to change password!\n");
271 }
272
273 SAFE_FREE(msg_str);
274 SAFE_FREE(err_str);
275 return ret;
276 }
277
278 /*******************************************************************
279 Store the LDAP admin password in secrets.tdb
280 ******************************************************************/
281 static bool store_ldap_admin_pw (char* pw)
282 {
283 if (!pw)
284 return False;
285
286 if (!secrets_init())
287 return False;
288
289 return secrets_store_ldap_pw(lp_ldap_admin_dn(talloc_tos()), pw);
290 }
291
292
293 /*************************************************************
294 Handle password changing for root.
295 *************************************************************/
296
297 static int process_root(int local_flags)
298 {
299 struct passwd *pwd;
300 int result = 0;
301 char *old_passwd = NULL;
302
303 if (local_flags & LOCAL_SET_LDAP_ADMIN_PW) {
304 char *ldap_admin_dn = lp_ldap_admin_dn(talloc_tos());
305 if ( ! *ldap_admin_dn ) {
306 DEBUG(0,("ERROR: 'ldap admin dn' not defined! Please check your smb.conf\n"));
307 goto done;
308 }
309
310 printf("Setting stored password for \"%s\" in secrets.tdb\n", ldap_admin_dn);
311 if ( ! *ldap_secret ) {
312 new_passwd = prompt_for_new_password(stdin_passwd_get);
313 fstrcpy(ldap_secret, new_passwd);
314 }
315 if (!store_ldap_admin_pw(ldap_secret)) {
316 DEBUG(0,("ERROR: Failed to store the ldap admin password!\n"));
317 }
318 goto done;
319 }
320
321 /* Ensure passdb startup(). */
322 if(!initialize_password_db(False, NULL)) {
323 DEBUG(0, ("Failed to open passdb!\n"));
324 exit(1);
325 }
326
327 /* Ensure we have a SAM sid. */
328 get_global_sam_sid();
329
330 /*
331 * Ensure both add/delete user are not set
332 * Ensure add/delete user and either remote machine or join domain are
333 * not both set.
334 */
335 if(((local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER)) == (LOCAL_ADD_USER|LOCAL_DELETE_USER)) ||
336 ((local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER)) &&
337 (remote_machine != NULL))) {
338 usage();
339 }
340
341 /* Only load interfaces if we are doing network operations. */
342
343 if (remote_machine) {
344 load_interfaces();
345 }
346
347 if (!user_name[0] && (pwd = getpwuid_alloc(talloc_tos(), geteuid()))) {
348 fstrcpy(user_name, pwd->pw_name);
349 TALLOC_FREE(pwd);
350 }
351
352 if (!user_name[0]) {
353 fprintf(stderr,"You must specify a username\n");
354 exit(1);
355 }
356
357 if (local_flags & LOCAL_TRUST_ACCOUNT) {
358 /* add the $ automatically */
359 static fstring buf;
360
361 /*
362 * Remove any trailing '$' before we
363 * generate the initial machine password.
364 */
365
366 if (user_name[strlen(user_name)-1] == '$') {
367 user_name[strlen(user_name)-1] = 0;
368 }
369
370 if (local_flags & LOCAL_ADD_USER) {
371 SAFE_FREE(new_passwd);
372 new_passwd = smb_xstrdup(user_name);
373 if (!strlower_m(new_passwd)) {
374 fprintf(stderr, "strlower_m %s failed\n",
375 new_passwd);
376 exit(1);
377 }
378 }
379
380 /*
381 * Now ensure the username ends in '$' for
382 * the machine add.
383 */
384
385 slprintf(buf, sizeof(buf)-1, "%s$", user_name);
386 strlcpy(user_name, buf, sizeof(user_name));
387 } else if (local_flags & LOCAL_INTERDOM_ACCOUNT) {
388 static fstring buf;
389
390 if ((local_flags & LOCAL_ADD_USER) && (new_passwd == NULL)) {
391 /*
392 * Prompt for trusting domain's account password
393 */
394 new_passwd = prompt_for_new_password(stdin_passwd_get);
395 if(!new_passwd) {
396 fprintf(stderr, "Unable to get newpassword.\n");
397 exit(1);
398 }
399 }
400
401 /* prepare uppercased and '$' terminated username */
402 slprintf(buf, sizeof(buf) - 1, "%s$", user_name);
403 strlcpy(user_name, buf, sizeof(user_name));
404
405 } else {
406
407 if (remote_machine != NULL) {
408 old_passwd = get_pass("Old SMB password:",stdin_passwd_get);
409 if(!old_passwd) {
410 fprintf(stderr, "Unable to get old password.\n");
411 exit(1);
412 }
413 }
414
415 if (!(local_flags & LOCAL_SET_PASSWORD)) {
416
417 /*
418 * If we are trying to enable a user, first we need to find out
419 * if they are using a modern version of the smbpasswd file that
420 * disables a user by just writing a flag into the file. If so
421 * then we can re-enable a user without prompting for a new
422 * password. If not (ie. they have a no stored password in the
423 * smbpasswd file) then we need to prompt for a new password.
424 */
425
426 if(local_flags & LOCAL_ENABLE_USER) {
427 struct samu *sampass = NULL;
428
429 sampass = samu_new( NULL );
430 if (!sampass) {
431 fprintf(stderr, "talloc fail for struct samu.\n");
432 exit(1);
433 }
434 if (!pdb_getsampwnam(sampass, user_name)) {
435 fprintf(stderr, "Failed to find user %s in passdb backend.\n",
436 user_name );
437 exit(1);
438 }
439
440 if(pdb_get_nt_passwd(sampass) == NULL) {
441 local_flags |= LOCAL_SET_PASSWORD;
442 }
443 TALLOC_FREE(sampass);
444 }
445 }
446
447 if((local_flags & LOCAL_SET_PASSWORD) && (new_passwd == NULL)) {
448
449 new_passwd = prompt_for_new_password(stdin_passwd_get);
450 if(!new_passwd) {
451 fprintf(stderr, "Unable to get new password.\n");
452 exit(1);
453 }
454 }
455 }
456
457 if (!NT_STATUS_IS_OK(password_change(remote_machine, user_name,
458 old_passwd, new_passwd,
459 local_flags))) {
460 result = 1;
461 goto done;
462 }
463
464 if(remote_machine) {
465 printf("Password changed for user %s on %s.\n", user_name, remote_machine );
466 } else if(!(local_flags & (LOCAL_ADD_USER|LOCAL_DISABLE_USER|LOCAL_ENABLE_USER|LOCAL_DELETE_USER|LOCAL_SET_NO_PASSWORD|LOCAL_SET_PASSWORD))) {
467 struct samu *sampass = NULL;
468
469 sampass = samu_new( NULL );
470 if (!sampass) {
471 fprintf(stderr, "talloc fail for struct samu.\n");
472 exit(1);
473 }
474
475 if (!pdb_getsampwnam(sampass, user_name)) {
476 fprintf(stderr, "Failed to find user %s in passdb backend.\n",
477 user_name );
478 exit(1);
479 }
480
481 printf("Password changed for user %s.", user_name );
482 if(pdb_get_acct_ctrl(sampass)&ACB_DISABLED) {
483 printf(" User has disabled flag set.");
484 }
485 if(pdb_get_acct_ctrl(sampass) & ACB_PWNOTREQ) {
486 printf(" User has no password flag set.");
487 }
488 printf("\n");
489 TALLOC_FREE(sampass);
490 }
491
492 done:
493 SAFE_FREE(old_passwd);
494 SAFE_FREE(new_passwd);
495 return result;
496 }
497
498
499 /*************************************************************
500 Handle password changing for non-root.
501 *************************************************************/
502
503 static int process_nonroot(int local_flags)
504 {
505 struct passwd *pwd = NULL;
506 int result = 0;
507 char *old_pw = NULL;
508 char *new_pw = NULL;
509
510 if (local_flags & ~(LOCAL_AM_ROOT | LOCAL_SET_PASSWORD)) {
511 /* Extra flags that we can't honor non-root */
512 usage();
513 }
514
515 if (!user_name[0]) {
516 pwd = getpwuid_alloc(talloc_tos(), getuid());
517 if (pwd) {
518 fstrcpy(user_name,pwd->pw_name);
519 TALLOC_FREE(pwd);
520 } else {
521 fprintf(stderr, "smbpasswd: cannot lookup user name for uid %u\n", (unsigned int)getuid());
522 exit(1);
523 }
524 }
525
526 /*
527 * A non-root user is always setting a password
528 * via a remote machine (even if that machine is
529 * localhost).
530 */
531
532 load_interfaces(); /* Delayed from main() */
533
534 if (remote_machine == NULL) {
535 remote_machine = "127.0.0.1";
536 }
537
538 if (remote_machine != NULL) {
539 old_pw = get_pass("Old SMB password:",stdin_passwd_get);
540 }
541
542 if (!new_passwd) {
543 new_pw = prompt_for_new_password(stdin_passwd_get);
544 }
545 else
546 new_pw = smb_xstrdup(new_passwd);
547
548 if (!new_pw) {
549 fprintf(stderr, "Unable to get new password.\n");
550 exit(1);
551 }
552
553 if (!NT_STATUS_IS_OK(password_change(remote_machine, user_name, old_pw,
554 new_pw, 0))) {
555 result = 1;
556 goto done;
557 }
558
559 printf("Password changed for user %s\n", user_name);
560
561 done:
562 SAFE_FREE(old_pw);
563 SAFE_FREE(new_pw);
564
565 return result;
566 }
567
568
569
570 /*********************************************************
571 Start here.
572 **********************************************************/
573 int main(int argc, char **argv)
574 {
575 TALLOC_CTX *frame = talloc_stackframe();
576 int local_flags = 0;
577 int ret;
578
579 #if defined(HAVE_SET_AUTH_PARAMETERS)
580 set_auth_parameters(argc, argv);
581 #endif /* HAVE_SET_AUTH_PARAMETERS */
582
583 if (getuid() == 0) {
584 local_flags = LOCAL_AM_ROOT;
585 }
586
587 load_case_tables();
588
589 local_flags = process_options(argc, argv, local_flags);
590
591 setup_logging("smbpasswd", DEBUG_STDERR);
592
593 /*
594 * Set the machine NETBIOS name if not already
595 * set from the config file.
596 */
597
598 if (!init_names())
599 return 1;
600
601 /* Check the effective uid - make sure we are not setuid */
602 if (is_setuid_root()) {
603 fprintf(stderr, "smbpasswd must *NOT* be setuid root.\n");
604 exit(1);
605 }
606
607 if (local_flags & LOCAL_AM_ROOT) {
608 bool ok;
609
610 ok = secrets_init();
611 if (!ok) {
612 return 1;
613 }
614 ret = process_root(local_flags);
615 } else {
616 ret = process_nonroot(local_flags);
617 }
618 TALLOC_FREE(frame);
619 return ret;
620 }
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