2 * Unix SMB/CIFS implementation.
3 * Copyright (C) Jeremy Allison 1995-1998
4 * Copyright (C) Tim Potter 2001
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.
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
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. */
22 extern BOOL AllowDebugChange;
25 * Next two lines needed for SunOS and don't
26 * hurt anything else...
31 /* forced running in root-mode */
32 static BOOL got_username = False;
33 static BOOL stdin_passwd_get = False;
34 static fstring user_name;
35 static char *new_passwd = NULL;
36 static const char *remote_machine = NULL;
38 static fstring ldap_secret;
41 /*********************************************************
42 Print command usage on stderr and die.
43 **********************************************************/
44 static void usage(void)
46 printf("When run by root:\n");
47 printf(" smbpasswd [options] [username]\n");
48 printf("otherwise:\n");
49 printf(" smbpasswd [options]\n\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");
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 PASSWORD ldap admin password\n");
68 printf(" -x delete user\n");
69 printf(" -R ORDER name resolve order\n");
74 static void set_line_buffering(FILE *f)
76 setvbuf(f, NULL, _IOLBF, 0);
79 /*******************************************************************
80 Process command line options
81 ******************************************************************/
83 static int process_options(int argc, char **argv, int local_flags)
87 pstrcpy(configfile, dyn_CONFIGFILE);
89 local_flags |= LOCAL_SET_PASSWORD;
91 ZERO_STRUCT(user_name);
95 while ((ch = getopt(argc, argv, "c:axdehminjr:sw:R:D:U:LW")) != EOF) {
98 local_flags |= LOCAL_AM_ROOT;
101 pstrcpy(configfile,optarg);
104 local_flags |= LOCAL_ADD_USER;
107 local_flags |= LOCAL_DELETE_USER;
108 local_flags &= ~LOCAL_SET_PASSWORD;
111 local_flags |= LOCAL_DISABLE_USER;
112 local_flags &= ~LOCAL_SET_PASSWORD;
115 local_flags |= LOCAL_ENABLE_USER;
116 local_flags &= ~LOCAL_SET_PASSWORD;
119 local_flags |= LOCAL_TRUST_ACCOUNT;
122 local_flags |= LOCAL_INTERDOM_ACCOUNT;
125 d_printf("See 'net join' for this functionality\n");
129 local_flags |= LOCAL_SET_NO_PASSWORD;
130 local_flags &= ~LOCAL_SET_PASSWORD;
131 new_passwd = smb_xstrdup("NO PASSWORD");
134 remote_machine = optarg;
137 set_line_buffering(stdin);
138 set_line_buffering(stdout);
139 set_line_buffering(stderr);
140 stdin_passwd_get = True;
143 local_flags |= LOCAL_SET_LDAP_ADMIN_PW;
144 fstrcpy(ldap_secret, optarg);
147 lp_set_name_resolve_order(optarg);
150 DEBUGLEVEL = atoi(optarg);
154 fstrcpy(user_name, optarg);
157 local_flags |= LOCAL_SET_LDAP_ADMIN_PW;
173 fstrcpy(user_name, "");
176 if (!(local_flags & LOCAL_AM_ROOT)) {
182 fstrcpy(user_name, argv[0]);
190 if (!lp_load(configfile,True,False,False)) {
191 fprintf(stderr, "Can't load %s - run testparm to debug it\n",
199 /*************************************************************
200 Utility function to prompt for new password.
201 *************************************************************/
202 static char *prompt_for_new_password(BOOL stdin_get)
209 p = get_pass("New SMB password:", stdin_get);
214 p = get_pass("Retype new SMB password:", stdin_get);
216 if (strcmp(p, new_pw)) {
217 fprintf(stderr, "Mismatch - password unchanged.\n");
227 /*************************************************************
228 Change a password either locally or remotely.
229 *************************************************************/
231 static BOOL password_change(const char *remote_mach, char *username,
232 char *old_passwd, char *new_pw, int local_flags)
238 if (remote_mach != NULL) {
239 if (local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER|LOCAL_DISABLE_USER|LOCAL_ENABLE_USER|
240 LOCAL_TRUST_ACCOUNT|LOCAL_SET_NO_PASSWORD)) {
241 /* these things can't be done remotely yet */
244 ret = remote_password_change(remote_mach, username,
245 old_passwd, new_pw, err_str, sizeof(err_str));
247 fprintf(stderr, "%s", err_str);
251 ret = local_password_change(username, local_flags, new_pw,
252 err_str, sizeof(err_str), msg_str, sizeof(msg_str));
255 printf("%s", msg_str);
257 fprintf(stderr, "%s", err_str);
262 /*******************************************************************
263 Store the LDAP admin password in secrets.tdb
264 ******************************************************************/
265 static BOOL store_ldap_admin_pw (char* pw)
273 return secrets_store_ldap_pw(lp_ldap_admin_dn(), pw);
277 /*************************************************************
278 Handle password changing for root.
279 *************************************************************/
281 static int process_root(int local_flags)
285 char *old_passwd = NULL;
287 if (local_flags & LOCAL_SET_LDAP_ADMIN_PW) {
288 printf("Setting stored password for \"%s\" in secrets.tdb\n",
290 if ( ! *ldap_secret ) {
291 new_passwd = prompt_for_new_password(stdin_passwd_get);
292 fstrcpy(ldap_secret, new_passwd);
294 if (!store_ldap_admin_pw(ldap_secret))
295 DEBUG(0,("ERROR: Failed to store the ldap admin password!\n"));
299 /* Ensure passdb startup(). */
300 if(!initialize_password_db(False)) {
301 DEBUG(0, ("Failed to open passdb!\n"));
305 /* Ensure we have a SAM sid. */
306 get_global_sam_sid();
309 * Ensure both add/delete user are not set
310 * Ensure add/delete user and either remote machine or join domain are
313 if(((local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER)) == (LOCAL_ADD_USER|LOCAL_DELETE_USER)) ||
314 ((local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER)) &&
315 (remote_machine != NULL))) {
319 /* Only load interfaces if we are doing network operations. */
321 if (remote_machine) {
325 if (!user_name[0] && (pwd = getpwuid_alloc(geteuid()))) {
326 fstrcpy(user_name, pwd->pw_name);
331 fprintf(stderr,"You must specify a username\n");
335 if (local_flags & LOCAL_TRUST_ACCOUNT) {
336 /* add the $ automatically */
340 * Remove any trailing '$' before we
341 * generate the initial machine password.
344 if (user_name[strlen(user_name)-1] == '$') {
345 user_name[strlen(user_name)-1] = 0;
348 if (local_flags & LOCAL_ADD_USER) {
349 SAFE_FREE(new_passwd);
350 new_passwd = smb_xstrdup(user_name);
351 strlower_m(new_passwd);
355 * Now ensure the username ends in '$' for
359 slprintf(buf, sizeof(buf)-1, "%s$", user_name);
360 fstrcpy(user_name, buf);
361 } else if (local_flags & LOCAL_INTERDOM_ACCOUNT) {
364 if ((local_flags & LOCAL_ADD_USER) && (new_passwd == NULL)) {
366 * Prompt for trusting domain's account password
368 new_passwd = prompt_for_new_password(stdin_passwd_get);
370 fprintf(stderr, "Unable to get newpassword.\n");
375 /* prepare uppercased and '$' terminated username */
376 slprintf(buf, sizeof(buf) - 1, "%s$", user_name);
377 fstrcpy(user_name, buf);
381 if (remote_machine != NULL) {
382 old_passwd = get_pass("Old SMB password:",stdin_passwd_get);
385 if (!(local_flags & LOCAL_SET_PASSWORD)) {
388 * If we are trying to enable a user, first we need to find out
389 * if they are using a modern version of the smbpasswd file that
390 * disables a user by just writing a flag into the file. If so
391 * then we can re-enable a user without prompting for a new
392 * password. If not (ie. they have a no stored password in the
393 * smbpasswd file) then we need to prompt for a new password.
396 if(local_flags & LOCAL_ENABLE_USER) {
397 SAM_ACCOUNT *sampass = NULL;
400 pdb_init_sam(&sampass);
401 ret = pdb_getsampwnam(sampass, user_name);
403 (pdb_get_lanman_passwd(sampass) == NULL)) {
404 local_flags |= LOCAL_SET_PASSWORD;
406 pdb_free_sam(&sampass);
410 if((local_flags & LOCAL_SET_PASSWORD) && (new_passwd == NULL)) {
411 new_passwd = prompt_for_new_password(stdin_passwd_get);
414 fprintf(stderr, "Unable to get new password.\n");
420 if (!password_change(remote_machine, user_name, old_passwd, new_passwd, local_flags)) {
421 fprintf(stderr,"Failed to modify password entry for user %s\n", user_name);
427 printf("Password changed for user %s on %s.\n", user_name, remote_machine );
428 } else if(!(local_flags & (LOCAL_ADD_USER|LOCAL_DISABLE_USER|LOCAL_ENABLE_USER|LOCAL_DELETE_USER|LOCAL_SET_NO_PASSWORD|LOCAL_SET_PASSWORD))) {
429 SAM_ACCOUNT *sampass = NULL;
432 pdb_init_sam(&sampass);
433 ret = pdb_getsampwnam(sampass, user_name);
435 printf("Password changed for user %s.", user_name );
436 if( (ret != False) && (pdb_get_acct_ctrl(sampass)&ACB_DISABLED) )
437 printf(" User has disabled flag set.");
438 if((ret != False) && (pdb_get_acct_ctrl(sampass) & ACB_PWNOTREQ) )
439 printf(" User has no password flag set.");
441 pdb_free_sam(&sampass);
445 SAFE_FREE(new_passwd);
450 /*************************************************************
451 Handle password changing for non-root.
452 *************************************************************/
454 static int process_nonroot(int local_flags)
456 struct passwd *pwd = NULL;
461 if (local_flags & ~(LOCAL_AM_ROOT | LOCAL_SET_PASSWORD)) {
462 /* Extra flags that we can't honor non-root */
467 pwd = getpwuid_alloc(getuid());
469 fstrcpy(user_name,pwd->pw_name);
472 fprintf(stderr, "smbpasswd: cannot lookup user name for uid %u\n", (unsigned int)getuid());
478 * A non-root user is always setting a password
479 * via a remote machine (even if that machine is
483 load_interfaces(); /* Delayed from main() */
485 if (remote_machine == NULL) {
486 remote_machine = "127.0.0.1";
489 if (remote_machine != NULL) {
490 old_pw = get_pass("Old SMB password:",stdin_passwd_get);
494 new_pw = prompt_for_new_password(stdin_passwd_get);
497 new_pw = smb_xstrdup(new_passwd);
500 fprintf(stderr, "Unable to get new password.\n");
504 if (!password_change(remote_machine, user_name, old_pw, new_pw, 0)) {
505 fprintf(stderr,"Failed to change password for %s\n", user_name);
510 printf("Password changed for user %s\n", user_name);
521 /*********************************************************
523 **********************************************************/
524 int main(int argc, char **argv)
528 AllowDebugChange = False;
530 #if defined(HAVE_SET_AUTH_PARAMETERS)
531 set_auth_parameters(argc, argv);
532 #endif /* HAVE_SET_AUTH_PARAMETERS */
535 local_flags = LOCAL_AM_ROOT;
540 local_flags = process_options(argc, argv, local_flags);
542 setup_logging("smbpasswd", True);
545 * Set the machine NETBIOS name if not already
546 * set from the config file.
552 /* Check the effective uid - make sure we are not setuid */
553 if (is_setuid_root()) {
554 fprintf(stderr, "smbpasswd must *NOT* be setuid root.\n");
558 if (local_flags & LOCAL_AM_ROOT) {
560 return process_root(local_flags);
563 return process_nonroot(local_flags);