source: trunk-3.0/source/utils/smbpasswd.c@ 101

Last change on this file since 101 was 30, checked in by Paul Smedley, 18 years ago

Code updated to Samba 3.0.25rc2 level
File size: 15.0 KB
Line 
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 2 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, write to the Free Software Foundation, Inc., 675
18 * Mass Ave, Cambridge, MA 02139, USA. */
19
20#include "includes.h"
21
22extern BOOL AllowDebugChange;
23
24/*
25 * Next two lines needed for SunOS and don't
26 * hurt anything else...
27 */
28extern char *optarg;
29extern int optind;
30
31/* forced running in root-mode */
32static BOOL got_username = False;
33static BOOL stdin_passwd_get = False;
34static fstring user_name;
35static char *new_passwd = NULL;
36static const char *remote_machine = NULL;
37
38static fstring ldap_secret;
39
40
41/*********************************************************
42 Print command usage on stderr and die.
43**********************************************************/
44static void usage(void)
45{
46 printf("When run by root:\n");
47 printf(" smbpasswd [options] [username]\n");
48 printf("otherwise:\n");
49 printf(" smbpasswd [options]\n\n");
50
51 printf("options:\n");
52 printf(" -L local mode (must be first option)\n");
53 printf(" -h print this usage message\n");
54 printf(" -s use stdin for password prompt\n");
55 printf(" -c smb.conf file Use the given path to the smb.conf file\n");
56 printf(" -D LEVEL debug level\n");
57 printf(" -r MACHINE remote machine\n");
58 printf(" -U USER remote username\n");
59
60 printf("extra options when run by root or in local mode:\n");
61 printf(" -a add user\n");
62 printf(" -d disable user\n");
63 printf(" -e enable user\n");
64 printf(" -i interdomain trust account\n");
65 printf(" -m machine trust account\n");
66 printf(" -n set no password\n");
67 printf(" -W use stdin ldap admin password\n");
68 printf(" -w PASSWORD ldap admin password\n");
69 printf(" -x delete user\n");
70 printf(" -R ORDER name resolve order\n");
71
72 exit(1);
73}
74
75static void set_line_buffering(FILE *f)
76{
77 setvbuf(f, NULL, _IOLBF, 0);
78}
79
80/*******************************************************************
81 Process command line options
82 ******************************************************************/
83
84static int process_options(int argc, char **argv, int local_flags)
85{
86 int ch;
87 pstring configfile;
88 pstrcpy(configfile, dyn_CONFIGFILE);
89
90 local_flags |= LOCAL_SET_PASSWORD;
91
92 ZERO_STRUCT(user_name);
93
94 user_name[0] = '\0';
95
96 while ((ch = getopt(argc, argv, "c:axdehminjr:sw:R:D:U:LW")) != EOF) {
97 switch(ch) {
98 case 'L':
99 local_flags |= LOCAL_AM_ROOT;
100 break;
101 case 'c':
102 pstrcpy(configfile,optarg);
103 break;
104 case 'a':
105 local_flags |= LOCAL_ADD_USER;
106 break;
107 case 'x':
108 local_flags |= LOCAL_DELETE_USER;
109 local_flags &= ~LOCAL_SET_PASSWORD;
110 break;
111 case 'd':
112 local_flags |= LOCAL_DISABLE_USER;
113 local_flags &= ~LOCAL_SET_PASSWORD;
114 break;
115 case 'e':
116 local_flags |= LOCAL_ENABLE_USER;
117 local_flags &= ~LOCAL_SET_PASSWORD;
118 break;
119 case 'm':
120 local_flags |= LOCAL_TRUST_ACCOUNT;
121 break;
122 case 'i':
123 local_flags |= LOCAL_INTERDOM_ACCOUNT;
124 break;
125 case 'j':
126 d_printf("See 'net join' for this functionality\n");
127 exit(1);
128 break;
129 case 'n':
130 local_flags |= LOCAL_SET_NO_PASSWORD;
131 local_flags &= ~LOCAL_SET_PASSWORD;
132 new_passwd = smb_xstrdup("NO PASSWORD");
133 break;
134 case 'r':
135 remote_machine = optarg;
136 break;
137 case 's':
138 set_line_buffering(stdin);
139 set_line_buffering(stdout);
140 set_line_buffering(stderr);
141 stdin_passwd_get = True;
142 break;
143 case 'w':
144 local_flags |= LOCAL_SET_LDAP_ADMIN_PW;
145 fstrcpy(ldap_secret, optarg);
146 break;
147 case 'R':
148 lp_set_name_resolve_order(optarg);
149 break;
150 case 'D':
151 DEBUGLEVEL = atoi(optarg);
152 break;
153 case 'U': {
154 got_username = True;
155 fstrcpy(user_name, optarg);
156 break;
157 case 'W':
158 local_flags |= LOCAL_SET_LDAP_ADMIN_PW;
159 *ldap_secret = '\0';
160 break;
161 }
162 case 'h':
163 default:
164 usage();
165 }
166 }
167
168 argc -= optind;
169 argv += optind;
170
171 switch(argc) {
172 case 0:
173 if (!got_username)
174 fstrcpy(user_name, "");
175 break;
176 case 1:
177 if (!(local_flags & LOCAL_AM_ROOT)) {
178 usage();
179 } else {
180 if (got_username) {
181 usage();
182 } else {
183 fstrcpy(user_name, argv[0]);
184 }
185 }
186 break;
187 default:
188 usage();
189 }
190
191 if (!lp_load(configfile,True,False,False,True)) {
192 fprintf(stderr, "Can't load %s - run testparm to debug it\n",
193 configfile);
194 exit(1);
195 }
196
197 return local_flags;
198}
199
200/*************************************************************
201 Utility function to prompt for new password.
202*************************************************************/
203static char *prompt_for_new_password(BOOL stdin_get)
204{
205 char *p;
206 fstring new_pw;
207
208 ZERO_ARRAY(new_pw);
209
210 p = get_pass("New SMB password:", stdin_get);
211
212 fstrcpy(new_pw, p);
213 SAFE_FREE(p);
214
215 p = get_pass("Retype new SMB password:", stdin_get);
216
217 if (strcmp(p, new_pw)) {
218 fprintf(stderr, "Mismatch - password unchanged.\n");
219 ZERO_ARRAY(new_pw);
220 SAFE_FREE(p);
221 return NULL;
222 }
223
224 return p;
225}
226
227
228/*************************************************************
229 Change a password either locally or remotely.
230*************************************************************/
231
232static NTSTATUS password_change(const char *remote_mach, char *username,
233 char *old_passwd, char *new_pw,
234 int local_flags)
235{
236 NTSTATUS ret;
237 pstring err_str;
238 pstring msg_str;
239
240 if (remote_mach != NULL) {
241 if (local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER|LOCAL_DISABLE_USER|LOCAL_ENABLE_USER|
242 LOCAL_TRUST_ACCOUNT|LOCAL_SET_NO_PASSWORD)) {
243 /* these things can't be done remotely yet */
244 return NT_STATUS_UNSUCCESSFUL;
245 }
246 ret = remote_password_change(remote_mach, username,
247 old_passwd, new_pw, err_str, sizeof(err_str));
248 if(*err_str)
249 fprintf(stderr, "%s", err_str);
250 return ret;
251 }
252
253 ret = local_password_change(username, local_flags, new_pw,
254 err_str, sizeof(err_str), msg_str, sizeof(msg_str));
255
256 if(*msg_str)
257 printf("%s", msg_str);
258 if(*err_str)
259 fprintf(stderr, "%s", err_str);
260
261 return ret;
262}
263
264/*******************************************************************
265 Store the LDAP admin password in secrets.tdb
266 ******************************************************************/
267static BOOL store_ldap_admin_pw (char* pw)
268{
269 if (!pw)
270 return False;
271
272 if (!secrets_init())
273 return False;
274
275 return secrets_store_ldap_pw(lp_ldap_admin_dn(), pw);
276}
277
278
279/*************************************************************
280 Handle password changing for root.
281*************************************************************/
282
283static int process_root(int local_flags)
284{
285 struct passwd *pwd;
286 int result = 0;
287 char *old_passwd = NULL;
288
289 if (local_flags & LOCAL_SET_LDAP_ADMIN_PW) {
290 char *ldap_admin_dn = lp_ldap_admin_dn();
291 if ( ! *ldap_admin_dn ) {
292 DEBUG(0,("ERROR: 'ldap admin dn' not defined! Please check your smb.conf\n"));
293 goto done;
294 }
295
296 printf("Setting stored password for \"%s\" in secrets.tdb\n", ldap_admin_dn);
297 if ( ! *ldap_secret ) {
298 new_passwd = prompt_for_new_password(stdin_passwd_get);
299 fstrcpy(ldap_secret, new_passwd);
300 }
301 if (!store_ldap_admin_pw(ldap_secret)) {
302 DEBUG(0,("ERROR: Failed to store the ldap admin password!\n"));
303 }
304 goto done;
305 }
306
307 /* Ensure passdb startup(). */
308 if(!initialize_password_db(False)) {
309 DEBUG(0, ("Failed to open passdb!\n"));
310 exit(1);
311 }
312
313 /* Ensure we have a SAM sid. */
314 get_global_sam_sid();
315
316 /*
317 * Ensure both add/delete user are not set
318 * Ensure add/delete user and either remote machine or join domain are
319 * not both set.
320 */
321 if(((local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER)) == (LOCAL_ADD_USER|LOCAL_DELETE_USER)) ||
322 ((local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER)) &&
323 (remote_machine != NULL))) {
324 usage();
325 }
326
327 /* Only load interfaces if we are doing network operations. */
328
329 if (remote_machine) {
330 load_interfaces();
331 }
332
333 if (!user_name[0] && (pwd = getpwuid_alloc(NULL, geteuid()))) {
334 fstrcpy(user_name, pwd->pw_name);
335 TALLOC_FREE(pwd);
336 }
337
338 if (!user_name[0]) {
339 fprintf(stderr,"You must specify a username\n");
340 exit(1);
341 }
342
343 if (local_flags & LOCAL_TRUST_ACCOUNT) {
344 /* add the $ automatically */
345 static fstring buf;
346
347 /*
348 * Remove any trailing '$' before we
349 * generate the initial machine password.
350 */
351
352 if (user_name[strlen(user_name)-1] == '$') {
353 user_name[strlen(user_name)-1] = 0;
354 }
355
356 if (local_flags & LOCAL_ADD_USER) {
357 SAFE_FREE(new_passwd);
358 new_passwd = smb_xstrdup(user_name);
359 strlower_m(new_passwd);
360 }
361
362 /*
363 * Now ensure the username ends in '$' for
364 * the machine add.
365 */
366
367 slprintf(buf, sizeof(buf)-1, "%s$", user_name);
368 fstrcpy(user_name, buf);
369 } else if (local_flags & LOCAL_INTERDOM_ACCOUNT) {
370 static fstring buf;
371
372 if ((local_flags & LOCAL_ADD_USER) && (new_passwd == NULL)) {
373 /*
374 * Prompt for trusting domain's account password
375 */
376 new_passwd = prompt_for_new_password(stdin_passwd_get);
377 if(!new_passwd) {
378 fprintf(stderr, "Unable to get newpassword.\n");
379 exit(1);
380 }
381 }
382
383 /* prepare uppercased and '$' terminated username */
384 slprintf(buf, sizeof(buf) - 1, "%s$", user_name);
385 fstrcpy(user_name, buf);
386
387 } else {
388
389 if (remote_machine != NULL) {
390 old_passwd = get_pass("Old SMB password:",stdin_passwd_get);
391 }
392
393 if (!(local_flags & LOCAL_SET_PASSWORD)) {
394
395 /*
396 * If we are trying to enable a user, first we need to find out
397 * if they are using a modern version of the smbpasswd file that
398 * disables a user by just writing a flag into the file. If so
399 * then we can re-enable a user without prompting for a new
400 * password. If not (ie. they have a no stored password in the
401 * smbpasswd file) then we need to prompt for a new password.
402 */
403
404 if(local_flags & LOCAL_ENABLE_USER) {
405 struct samu *sampass = NULL;
406
407 sampass = samu_new( NULL );
408 if (!sampass) {
409 fprintf(stderr, "talloc fail for struct samu.\n");
410 exit(1);
411 }
412 if (!pdb_getsampwnam(sampass, user_name)) {
413 fprintf(stderr, "Failed to find user %s in passdb backend.\n",
414 user_name );
415 exit(1);
416 }
417
418 if(pdb_get_nt_passwd(sampass) == NULL) {
419 local_flags |= LOCAL_SET_PASSWORD;
420 }
421 TALLOC_FREE(sampass);
422 }
423 }
424
425 if((local_flags & LOCAL_SET_PASSWORD) && (new_passwd == NULL)) {
426 new_passwd = prompt_for_new_password(stdin_passwd_get);
427
428 if(!new_passwd) {
429 fprintf(stderr, "Unable to get new password.\n");
430 exit(1);
431 }
432 }
433 }
434
435 if (!NT_STATUS_IS_OK(password_change(remote_machine, user_name,
436 old_passwd, new_passwd,
437 local_flags))) {
438 fprintf(stderr,"Failed to modify password entry for user %s\n", user_name);
439 result = 1;
440 goto done;
441 }
442
443 if(remote_machine) {
444 printf("Password changed for user %s on %s.\n", user_name, remote_machine );
445 } else if(!(local_flags & (LOCAL_ADD_USER|LOCAL_DISABLE_USER|LOCAL_ENABLE_USER|LOCAL_DELETE_USER|LOCAL_SET_NO_PASSWORD|LOCAL_SET_PASSWORD))) {
446 struct samu *sampass = NULL;
447
448 sampass = samu_new( NULL );
449 if (!sampass) {
450 fprintf(stderr, "talloc fail for struct samu.\n");
451 exit(1);
452 }
453
454 if (!pdb_getsampwnam(sampass, user_name)) {
455 fprintf(stderr, "Failed to find user %s in passdb backend.\n",
456 user_name );
457 exit(1);
458 }
459
460 printf("Password changed for user %s.", user_name );
461 if(pdb_get_acct_ctrl(sampass)&ACB_DISABLED) {
462 printf(" User has disabled flag set.");
463 }
464 if(pdb_get_acct_ctrl(sampass) & ACB_PWNOTREQ) {
465 printf(" User has no password flag set.");
466 }
467 printf("\n");
468 TALLOC_FREE(sampass);
469 }
470
471 done:
472 SAFE_FREE(new_passwd);
473 return result;
474}
475
476
477/*************************************************************
478 Handle password changing for non-root.
479*************************************************************/
480
481static int process_nonroot(int local_flags)
482{
483 struct passwd *pwd = NULL;
484 int result = 0;
485 char *old_pw = NULL;
486 char *new_pw = NULL;
487
488 if (local_flags & ~(LOCAL_AM_ROOT | LOCAL_SET_PASSWORD)) {
489 /* Extra flags that we can't honor non-root */
490 usage();
491 }
492
493 if (!user_name[0]) {
494 pwd = getpwuid_alloc(NULL, getuid());
495 if (pwd) {
496 fstrcpy(user_name,pwd->pw_name);
497 TALLOC_FREE(pwd);
498 } else {
499 fprintf(stderr, "smbpasswd: cannot lookup user name for uid %u\n", (unsigned int)getuid());
500 exit(1);
501 }
502 }
503
504 /*
505 * A non-root user is always setting a password
506 * via a remote machine (even if that machine is
507 * localhost).
508 */
509
510 load_interfaces(); /* Delayed from main() */
511
512 if (remote_machine == NULL) {
513 remote_machine = "127.0.0.1";
514 }
515
516 if (remote_machine != NULL) {
517 old_pw = get_pass("Old SMB password:",stdin_passwd_get);
518 }
519
520 if (!new_passwd) {
521 new_pw = prompt_for_new_password(stdin_passwd_get);
522 }
523 else
524 new_pw = smb_xstrdup(new_passwd);
525
526 if (!new_pw) {
527 fprintf(stderr, "Unable to get new password.\n");
528 exit(1);
529 }
530
531 if (!NT_STATUS_IS_OK(password_change(remote_machine, user_name, old_pw,
532 new_pw, 0))) {
533 fprintf(stderr,"Failed to change password for %s\n", user_name);
534 result = 1;
535 goto done;
536 }
537
538 printf("Password changed for user %s\n", user_name);
539
540 done:
541 SAFE_FREE(old_pw);
542 SAFE_FREE(new_pw);
543
544 return result;
545}
546
547
548
549/*********************************************************
550 Start here.
551**********************************************************/
552int main(int argc, char **argv)
553{
554 int local_flags = 0;
555
556 AllowDebugChange = False;
557
558#if defined(HAVE_SET_AUTH_PARAMETERS)
559 set_auth_parameters(argc, argv);
560#endif /* HAVE_SET_AUTH_PARAMETERS */
561
562 if (getuid() == 0) {
563 local_flags = LOCAL_AM_ROOT;
564 }
565
566 load_case_tables();
567
568 local_flags = process_options(argc, argv, local_flags);
569
570 setup_logging("smbpasswd", True);
571
572 /*
573 * Set the machine NETBIOS name if not already
574 * set from the config file.
575 */
576
577 if (!init_names())
578 return 1;
579
580 /* Check the effective uid - make sure we are not setuid */
581 if (is_setuid_root()) {
582 fprintf(stderr, "smbpasswd must *NOT* be setuid root.\n");
583 exit(1);
584 }
585
586 if (local_flags & LOCAL_AM_ROOT) {
587 secrets_init();
588 return process_root(local_flags);
589 }
590
591 return process_nonroot(local_flags);
592}
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