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: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 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);
169 fstrcpy(user_name, "");
172 if (!(local_flags & LOCAL_AM_ROOT)) {
178 fstrcpy(user_name, argv[0]);
186 if (!lp_load(configfile,True,False,False)) {
187 fprintf(stderr, "Can't load %s - run testparm to debug it\n",
195 /*************************************************************
196 Utility function to prompt for passwords from stdin. Each
197 password entered must end with a newline.
198 *************************************************************/
199 static char *stdin_new_passwd(void)
201 static fstring new_pw;
207 * if no error is reported from fgets() and string at least contains
208 * the newline that ends the password, then replace the newline with
211 if ( fgets(new_pw, sizeof(new_pw), stdin) != NULL) {
212 if ((len = strlen(new_pw)) > 0) {
213 if(new_pw[len-1] == '\n')
221 /*************************************************************
222 Utility function to get passwords via tty or stdin
223 Used if the '-s' option is set to silently get passwords
225 *************************************************************/
226 static char *get_pass( const char *prompt, BOOL stdin_get)
230 p = stdin_new_passwd();
234 return smb_xstrdup(p);
237 /*************************************************************
238 Utility function to prompt for new password.
239 *************************************************************/
240 static char *prompt_for_new_password(BOOL stdin_get)
247 p = get_pass("New SMB password:", stdin_get);
252 p = get_pass("Retype new SMB password:", stdin_get);
254 if (strcmp(p, new_pw)) {
255 fprintf(stderr, "Mismatch - password unchanged.\n");
265 /*************************************************************
266 Change a password either locally or remotely.
267 *************************************************************/
269 static BOOL password_change(const char *remote_mach, char *username,
270 char *old_passwd, char *new_pw, int local_flags)
276 if (remote_mach != NULL) {
277 if (local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER|LOCAL_DISABLE_USER|LOCAL_ENABLE_USER|
278 LOCAL_TRUST_ACCOUNT|LOCAL_SET_NO_PASSWORD)) {
279 /* these things can't be done remotely yet */
282 ret = remote_password_change(remote_mach, username,
283 old_passwd, new_pw, err_str, sizeof(err_str));
285 fprintf(stderr, "%s", err_str);
289 ret = local_password_change(username, local_flags, new_pw,
290 err_str, sizeof(err_str), msg_str, sizeof(msg_str));
295 fprintf(stderr, "%s", err_str);
300 /*******************************************************************
301 Store the LDAP admin password in secrets.tdb
302 ******************************************************************/
303 static BOOL store_ldap_admin_pw (char* pw)
311 return secrets_store_ldap_pw(lp_ldap_admin_dn(), pw);
315 /*************************************************************
316 Handle password changing for root.
317 *************************************************************/
319 static int process_root(int local_flags)
323 char *old_passwd = NULL;
325 if (local_flags & LOCAL_SET_LDAP_ADMIN_PW) {
326 printf("Setting stored password for \"%s\" in secrets.tdb\n",
328 if (!store_ldap_admin_pw(ldap_secret))
329 DEBUG(0,("ERROR: Failed to store the ldap admin password!\n"));
333 /* Ensure passdb startup(). */
334 if(!initialize_password_db(False)) {
335 DEBUG(0, ("Failed to open passdb!\n"));
339 /* Ensure we have a SAM sid. */
340 get_global_sam_sid();
343 * Ensure both add/delete user are not set
344 * Ensure add/delete user and either remote machine or join domain are
347 if(((local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER)) == (LOCAL_ADD_USER|LOCAL_DELETE_USER)) ||
348 ((local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER)) &&
349 (remote_machine != NULL))) {
353 /* Only load interfaces if we are doing network operations. */
355 if (remote_machine) {
359 if (!user_name[0] && (pwd = getpwuid_alloc(geteuid()))) {
360 fstrcpy(user_name, pwd->pw_name);
365 fprintf(stderr,"You must specify a username\n");
369 if (local_flags & LOCAL_TRUST_ACCOUNT) {
370 /* add the $ automatically */
374 * Remove any trailing '$' before we
375 * generate the initial machine password.
378 if (user_name[strlen(user_name)-1] == '$') {
379 user_name[strlen(user_name)-1] = 0;
382 if (local_flags & LOCAL_ADD_USER) {
383 SAFE_FREE(new_passwd);
384 new_passwd = smb_xstrdup(user_name);
385 strlower_m(new_passwd);
389 * Now ensure the username ends in '$' for
393 slprintf(buf, sizeof(buf)-1, "%s$", user_name);
394 fstrcpy(user_name, buf);
395 } else if (local_flags & LOCAL_INTERDOM_ACCOUNT) {
398 if ((local_flags & LOCAL_ADD_USER) && (new_passwd == NULL)) {
400 * Prompt for trusting domain's account password
402 new_passwd = prompt_for_new_password(stdin_passwd_get);
404 fprintf(stderr, "Unable to get newpassword.\n");
409 /* prepare uppercased and '$' terminated username */
410 slprintf(buf, sizeof(buf) - 1, "%s$", user_name);
411 fstrcpy(user_name, buf);
415 if (remote_machine != NULL) {
416 old_passwd = get_pass("Old SMB password:",stdin_passwd_get);
419 if (!(local_flags & LOCAL_SET_PASSWORD)) {
422 * If we are trying to enable a user, first we need to find out
423 * if they are using a modern version of the smbpasswd file that
424 * disables a user by just writing a flag into the file. If so
425 * then we can re-enable a user without prompting for a new
426 * password. If not (ie. they have a no stored password in the
427 * smbpasswd file) then we need to prompt for a new password.
430 if(local_flags & LOCAL_ENABLE_USER) {
431 SAM_ACCOUNT *sampass = NULL;
434 pdb_init_sam(&sampass);
435 ret = pdb_getsampwnam(sampass, user_name);
437 (pdb_get_lanman_passwd(sampass) == NULL)) {
438 local_flags |= LOCAL_SET_PASSWORD;
440 pdb_free_sam(&sampass);
444 if((local_flags & LOCAL_SET_PASSWORD) && (new_passwd == NULL)) {
445 new_passwd = prompt_for_new_password(stdin_passwd_get);
448 fprintf(stderr, "Unable to get new password.\n");
454 if (!password_change(remote_machine, user_name, old_passwd, new_passwd, local_flags)) {
455 fprintf(stderr,"Failed to modify password entry for user %s\n", user_name);
461 printf("Password changed for user %s on %s.\n", user_name, remote_machine );
462 } else if(!(local_flags & (LOCAL_ADD_USER|LOCAL_DISABLE_USER|LOCAL_ENABLE_USER|LOCAL_DELETE_USER|LOCAL_SET_NO_PASSWORD|LOCAL_SET_PASSWORD))) {
463 SAM_ACCOUNT *sampass = NULL;
466 pdb_init_sam(&sampass);
467 ret = pdb_getsampwnam(sampass, user_name);
469 printf("Password changed for user %s.", user_name );
470 if( (ret != False) && (pdb_get_acct_ctrl(sampass)&ACB_DISABLED) )
471 printf(" User has disabled flag set.");
472 if((ret != False) && (pdb_get_acct_ctrl(sampass) & ACB_PWNOTREQ) )
473 printf(" User has no password flag set.");
475 pdb_free_sam(&sampass);
479 SAFE_FREE(new_passwd);
484 /*************************************************************
485 Handle password changing for non-root.
486 *************************************************************/
488 static int process_nonroot(int local_flags)
490 struct passwd *pwd = NULL;
495 if (local_flags & ~(LOCAL_AM_ROOT | LOCAL_SET_PASSWORD)) {
496 /* Extra flags that we can't honor non-root */
501 pwd = getpwuid_alloc(getuid());
503 fstrcpy(user_name,pwd->pw_name);
506 fprintf(stderr, "smbpasswd: cannot lookup user name for uid %u\n", (unsigned int)getuid());
512 * A non-root user is always setting a password
513 * via a remote machine (even if that machine is
517 load_interfaces(); /* Delayed from main() */
519 if (remote_machine == NULL) {
520 remote_machine = "127.0.0.1";
523 if (remote_machine != NULL) {
524 old_pw = get_pass("Old SMB password:",stdin_passwd_get);
528 new_pw = prompt_for_new_password(stdin_passwd_get);
531 new_pw = smb_xstrdup(new_passwd);
534 fprintf(stderr, "Unable to get new password.\n");
538 if (!password_change(remote_machine, user_name, old_pw, new_pw, 0)) {
539 fprintf(stderr,"Failed to change password for %s\n", user_name);
544 printf("Password changed for user %s\n", user_name);
555 /*********************************************************
557 **********************************************************/
558 int main(int argc, char **argv)
562 AllowDebugChange = False;
564 #if defined(HAVE_SET_AUTH_PARAMETERS)
565 set_auth_parameters(argc, argv);
566 #endif /* HAVE_SET_AUTH_PARAMETERS */
569 local_flags = LOCAL_AM_ROOT;
572 local_flags = process_options(argc, argv, local_flags);
574 setup_logging("smbpasswd", True);
577 * Set the machine NETBIOS name if not already
578 * set from the config file.
584 /* Check the effective uid - make sure we are not setuid */
585 if (is_setuid_root()) {
586 fprintf(stderr, "smbpasswd must *NOT* be setuid root.\n");
590 if (local_flags & LOCAL_AM_ROOT) {
592 return process_root(local_flags);
595 return process_nonroot(local_flags);