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 pstring global_myname;
23 extern BOOL AllowDebugChange;
26 * Next two lines needed for SunOS and don't
27 * hurt anything else...
32 /* forced running in root-mode */
33 static BOOL got_pass = False, got_username = False;
34 static BOOL stdin_passwd_get = False;
35 static fstring user_name, user_password;
36 static char *new_passwd = NULL;
37 static char *remote_machine = NULL;
39 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] [password]\n");
48 printf("otherwise:\n");
49 printf(" smbpasswd [options] [password]\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 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 ******************************************************************/
82 static int process_options(int argc, char **argv, int local_flags)
86 pstrcpy(configfile, dyn_CONFIGFILE);
88 local_flags |= LOCAL_SET_PASSWORD;
90 ZERO_STRUCT(user_name);
91 ZERO_STRUCT(user_password);
95 while ((ch = getopt(argc, argv, "c:axdehminjr:sw:R:D:U:L")) != 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 rpc 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);
156 fstrcpy(user_name, optarg);
158 if ((lp = strchr(user_name, '%'))) {
160 fstrcpy(user_password, lp + 1);
162 memset(strchr_m(optarg, '%') + 1, 'X',
163 strlen(user_password));
180 fstrcpy(user_name, "");
183 if (!(local_flags & LOCAL_AM_ROOT)) {
184 new_passwd = argv[0];
189 fstrcpy(user_name, argv[0]);
194 if (!(local_flags & LOCAL_AM_ROOT) || got_username || got_pass) {
198 fstrcpy(user_name, argv[0]);
199 new_passwd = smb_xstrdup(argv[1]);
205 if (!lp_load(configfile,True,False,False)) {
206 fprintf(stderr, "Can't load %s - run testparm to debug it\n",
214 /*************************************************************
215 Utility function to prompt for passwords from stdin. Each
216 password entered must end with a newline.
217 *************************************************************/
218 static char *stdin_new_passwd(void)
220 static fstring new_passwd;
223 ZERO_ARRAY(new_passwd);
226 * if no error is reported from fgets() and string at least contains
227 * the newline that ends the password, then replace the newline with
230 if ( fgets(new_passwd, sizeof(new_passwd), stdin) != NULL) {
231 if ((len = strlen(new_passwd)) > 0) {
232 if(new_passwd[len-1] == '\n')
233 new_passwd[len - 1] = 0;
240 /*************************************************************
241 Utility function to get passwords via tty or stdin
242 Used if the '-s' option is set to silently get passwords
244 *************************************************************/
245 static char *get_pass( char *prompt, BOOL stdin_get)
249 p = stdin_new_passwd();
253 return smb_xstrdup(p);
256 /*************************************************************
257 Utility function to prompt for new password.
258 *************************************************************/
259 static char *prompt_for_new_password(BOOL stdin_get)
264 ZERO_ARRAY(new_passwd);
266 p = get_pass("New SMB password:", stdin_get);
268 fstrcpy(new_passwd, p);
271 p = get_pass("Retype new SMB password:", stdin_get);
273 if (strcmp(p, new_passwd)) {
274 fprintf(stderr, "Mismatch - password unchanged.\n");
275 ZERO_ARRAY(new_passwd);
284 /*************************************************************
285 Change a password either locally or remotely.
286 *************************************************************/
288 static BOOL password_change(const char *remote_machine, char *user_name,
289 char *old_passwd, char *new_passwd, int local_flags)
295 if (remote_machine != NULL) {
296 if (local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER|LOCAL_DISABLE_USER|LOCAL_ENABLE_USER|
297 LOCAL_TRUST_ACCOUNT|LOCAL_SET_NO_PASSWORD)) {
298 /* these things can't be done remotely yet */
301 ret = remote_password_change(remote_machine, user_name,
302 old_passwd, new_passwd, err_str, sizeof(err_str));
304 fprintf(stderr, err_str);
308 ret = local_password_change(user_name, local_flags, new_passwd,
309 err_str, sizeof(err_str), msg_str, sizeof(msg_str));
314 fprintf(stderr, err_str);
319 /*******************************************************************
320 Store the LDAP admin password in secrets.tdb
321 ******************************************************************/
322 static BOOL store_ldap_admin_pw (char* pw)
330 return secrets_store_ldap_pw(lp_ldap_admin_dn(), pw);
334 /*************************************************************
335 Handle password changing for root.
336 *************************************************************/
338 static int process_root(int local_flags)
342 char *old_passwd = NULL;
344 if (local_flags & LOCAL_SET_LDAP_ADMIN_PW)
346 printf("Setting stored password for \"%s\" in secrets.tdb\n",
348 if (!store_ldap_admin_pw(ldap_secret))
349 DEBUG(0,("ERROR: Failed to store the ldap admin password!\n"));
354 * Ensure both add/delete user are not set
355 * Ensure add/delete user and either remote machine or join domain are
358 if(((local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER)) == (LOCAL_ADD_USER|LOCAL_DELETE_USER)) ||
359 ((local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER)) &&
360 (remote_machine != NULL))) {
364 /* Only load interfaces if we are doing network operations. */
366 if (remote_machine) {
370 if (!user_name[0] && (pwd = getpwuid_alloc(geteuid()))) {
371 fstrcpy(user_name, pwd->pw_name);
376 fprintf(stderr,"You must specify a username\n");
380 if (local_flags & LOCAL_TRUST_ACCOUNT) {
381 /* add the $ automatically */
385 * Remove any trailing '$' before we
386 * generate the initial machine password.
389 if (user_name[strlen(user_name)-1] == '$') {
390 user_name[strlen(user_name)-1] = 0;
393 if (local_flags & LOCAL_ADD_USER) {
394 SAFE_FREE(new_passwd);
395 new_passwd = smb_xstrdup(user_name);
396 strlower(new_passwd);
400 * Now ensure the username ends in '$' for
404 slprintf(buf, sizeof(buf)-1, "%s$", user_name);
405 fstrcpy(user_name, buf);
406 } else if (local_flags & LOCAL_INTERDOM_ACCOUNT) {
409 if (local_flags & LOCAL_ADD_USER) {
411 * Prompt for trusting domain's account password
413 new_passwd = prompt_for_new_password(stdin_passwd_get);
415 fprintf(stderr, "Unable to get newpassword.\n");
420 /* prepare uppercased and '$' terminated username */
421 slprintf(buf, sizeof(buf) - 1, "%s$", user_name);
422 fstrcpy(user_name, buf);
426 if (remote_machine != NULL) {
427 old_passwd = get_pass("Old SMB password:",stdin_passwd_get);
430 if (!(local_flags & LOCAL_SET_PASSWORD)) {
433 * If we are trying to enable a user, first we need to find out
434 * if they are using a modern version of the smbpasswd file that
435 * disables a user by just writing a flag into the file. If so
436 * then we can re-enable a user without prompting for a new
437 * password. If not (ie. they have a no stored password in the
438 * smbpasswd file) then we need to prompt for a new password.
441 if(local_flags & LOCAL_ENABLE_USER) {
442 SAM_ACCOUNT *sampass = NULL;
445 pdb_init_sam(&sampass);
446 ret = pdb_getsampwnam(sampass, user_name);
447 if((sampass != False) && (pdb_get_lanman_passwd(sampass) == NULL)) {
448 local_flags |= LOCAL_SET_PASSWORD;
450 pdb_free_sam(&sampass);
454 if(local_flags & LOCAL_SET_PASSWORD) {
455 new_passwd = prompt_for_new_password(stdin_passwd_get);
458 fprintf(stderr, "Unable to get new password.\n");
464 if (!password_change(remote_machine, user_name, old_passwd, new_passwd, local_flags)) {
465 fprintf(stderr,"Failed to modify password entry for user %s\n", user_name);
471 printf("Password changed for user %s on %s.\n", user_name, remote_machine );
472 } else if(!(local_flags & (LOCAL_ADD_USER|LOCAL_DISABLE_USER|LOCAL_ENABLE_USER|LOCAL_DELETE_USER|LOCAL_SET_NO_PASSWORD|LOCAL_SET_PASSWORD))) {
473 SAM_ACCOUNT *sampass = NULL;
476 pdb_init_sam(&sampass);
477 ret = pdb_getsampwnam(sampass, user_name);
479 printf("Password changed for user %s.", user_name );
480 if( (ret != False) && (pdb_get_acct_ctrl(sampass)&ACB_DISABLED) )
481 printf(" User has disabled flag set.");
482 if((ret != False) && (pdb_get_acct_ctrl(sampass) & ACB_PWNOTREQ) )
483 printf(" User has no password flag set.");
485 pdb_free_sam(&sampass);
489 SAFE_FREE(new_passwd);
494 /*************************************************************
495 Handle password changing for non-root.
496 *************************************************************/
498 static int process_nonroot(int local_flags)
500 struct passwd *pwd = NULL;
502 char *old_passwd = NULL;
504 if (local_flags & ~(LOCAL_AM_ROOT | LOCAL_SET_PASSWORD)) {
505 /* Extra flags that we can't honor non-root */
510 pwd = getpwuid_alloc(getuid());
512 fstrcpy(user_name,pwd->pw_name);
515 fprintf(stderr, "smbpasswd: you don't exist - go away\n");
521 * A non-root user is always setting a password
522 * via a remote machine (even if that machine is
526 load_interfaces(); /* Delayed from main() */
528 if (remote_machine == NULL) {
529 remote_machine = "127.0.0.1";
532 if (remote_machine != NULL) {
533 old_passwd = get_pass("Old SMB password:",stdin_passwd_get);
537 new_passwd = prompt_for_new_password(stdin_passwd_get);
541 fprintf(stderr, "Unable to get new password.\n");
545 if (!password_change(remote_machine, user_name, old_passwd, new_passwd, 0)) {
546 fprintf(stderr,"Failed to change password for %s\n", user_name);
551 printf("Password changed for user %s\n", user_name);
554 SAFE_FREE(old_passwd);
555 SAFE_FREE(new_passwd);
562 /*********************************************************
564 **********************************************************/
565 int main(int argc, char **argv)
569 AllowDebugChange = False;
571 #if defined(HAVE_SET_AUTH_PARAMETERS)
572 set_auth_parameters(argc, argv);
573 #endif /* HAVE_SET_AUTH_PARAMETERS */
576 local_flags = LOCAL_AM_ROOT;
579 local_flags = process_options(argc, argv, local_flags);
581 setup_logging("smbpasswd", True);
584 * Set the machine NETBIOS name if not already
585 * set from the config file.
588 if (!*global_myname) {
590 fstrcpy(global_myname, myhostname());
591 p = strchr_m(global_myname, '.' );
594 strupper(global_myname);
596 /* Check the effective uid - make sure we are not setuid */
597 if (is_setuid_root()) {
598 fprintf(stderr, "smbpasswd must *NOT* be setuid root.\n");
602 if (local_flags & LOCAL_AM_ROOT) {
604 return process_root(local_flags);
607 return process_nonroot(local_flags);