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_pass = False, got_username = False;
33 static BOOL stdin_passwd_get = False;
34 static fstring user_name, user_password;
35 static char *new_passwd = NULL;
36 static const char *remote_machine = NULL;
38 static fstring ldap_secret;
40 /*********************************************************
41 Print command usage on stderr and die.
42 **********************************************************/
43 static void usage(void)
45 printf("When run by root:\n");
46 printf(" smbpasswd [options] [username] [password]\n");
47 printf("otherwise:\n");
48 printf(" smbpasswd [options] [password]\n\n");
51 printf(" -L local mode (must be first option)\n");
52 printf(" -h print this usage message\n");
53 printf(" -s use stdin for password prompt\n");
54 printf(" -c smb.conf file Use the given path to the smb.conf file\n");
55 printf(" -D LEVEL debug level\n");
56 printf(" -r MACHINE remote machine\n");
57 printf(" -U USER remote username\n");
59 printf("extra options when run by root or in local mode:\n");
60 printf(" -a add user\n");
61 printf(" -d disable user\n");
62 printf(" -e enable user\n");
63 printf(" -i interdomain trust account\n");
64 printf(" -m machine trust account\n");
65 printf(" -n set no password\n");
66 printf(" -w PASSWORD ldap admin password\n");
67 printf(" -x delete user\n");
68 printf(" -R ORDER name resolve order\n");
73 static void set_line_buffering(FILE *f)
75 setvbuf(f, NULL, _IOLBF, 0);
78 /*******************************************************************
79 Process command line options
80 ******************************************************************/
81 static int process_options(int argc, char **argv, int local_flags)
85 pstrcpy(configfile, dyn_CONFIGFILE);
87 local_flags |= LOCAL_SET_PASSWORD;
89 ZERO_STRUCT(user_name);
90 ZERO_STRUCT(user_password);
94 while ((ch = getopt(argc, argv, "c:axdehminjr:sw:R:D:U:L")) != EOF) {
97 local_flags |= LOCAL_AM_ROOT;
100 pstrcpy(configfile,optarg);
103 local_flags |= LOCAL_ADD_USER;
106 local_flags |= LOCAL_DELETE_USER;
107 local_flags &= ~LOCAL_SET_PASSWORD;
110 local_flags |= LOCAL_DISABLE_USER;
111 local_flags &= ~LOCAL_SET_PASSWORD;
114 local_flags |= LOCAL_ENABLE_USER;
115 local_flags &= ~LOCAL_SET_PASSWORD;
118 local_flags |= LOCAL_TRUST_ACCOUNT;
121 local_flags |= LOCAL_INTERDOM_ACCOUNT;
124 d_printf("See 'net join' for this functionality\n");
128 local_flags |= LOCAL_SET_NO_PASSWORD;
129 local_flags &= ~LOCAL_SET_PASSWORD;
130 new_passwd = smb_xstrdup("NO PASSWORD");
133 remote_machine = optarg;
136 set_line_buffering(stdin);
137 set_line_buffering(stdout);
138 set_line_buffering(stderr);
139 stdin_passwd_get = True;
142 local_flags |= LOCAL_SET_LDAP_ADMIN_PW;
143 fstrcpy(ldap_secret, optarg);
146 lp_set_name_resolve_order(optarg);
149 DEBUGLEVEL = atoi(optarg);
155 fstrcpy(user_name, optarg);
157 if ((lp = strchr(user_name, '%'))) {
159 fstrcpy(user_password, lp + 1);
161 memset(strchr_m(optarg, '%') + 1, 'X',
162 strlen(user_password));
179 fstrcpy(user_name, "");
182 if (!(local_flags & LOCAL_AM_ROOT)) {
183 new_passwd = argv[0];
188 fstrcpy(user_name, argv[0]);
193 if (!(local_flags & LOCAL_AM_ROOT) || got_username || got_pass) {
197 fstrcpy(user_name, argv[0]);
198 new_passwd = smb_xstrdup(argv[1]);
204 if (!lp_load(configfile,True,False,False)) {
205 fprintf(stderr, "Can't load %s - run testparm to debug it\n",
213 /*************************************************************
214 Utility function to prompt for passwords from stdin. Each
215 password entered must end with a newline.
216 *************************************************************/
217 static char *stdin_new_passwd(void)
219 static fstring new_pw;
225 * if no error is reported from fgets() and string at least contains
226 * the newline that ends the password, then replace the newline with
229 if ( fgets(new_pw, sizeof(new_pw), stdin) != NULL) {
230 if ((len = strlen(new_pw)) > 0) {
231 if(new_pw[len-1] == '\n')
239 /*************************************************************
240 Utility function to get passwords via tty or stdin
241 Used if the '-s' option is set to silently get passwords
243 *************************************************************/
244 static char *get_pass( const char *prompt, BOOL stdin_get)
248 p = stdin_new_passwd();
252 return smb_xstrdup(p);
255 /*************************************************************
256 Utility function to prompt for new password.
257 *************************************************************/
258 static char *prompt_for_new_password(BOOL stdin_get)
265 p = get_pass("New SMB password:", stdin_get);
270 p = get_pass("Retype new SMB password:", stdin_get);
272 if (strcmp(p, new_pw)) {
273 fprintf(stderr, "Mismatch - password unchanged.\n");
283 /*************************************************************
284 Change a password either locally or remotely.
285 *************************************************************/
287 static BOOL password_change(const char *remote_mach, char *username,
288 char *old_passwd, char *new_pw, int local_flags)
294 if (remote_mach != NULL) {
295 if (local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER|LOCAL_DISABLE_USER|LOCAL_ENABLE_USER|
296 LOCAL_TRUST_ACCOUNT|LOCAL_SET_NO_PASSWORD)) {
297 /* these things can't be done remotely yet */
300 ret = remote_password_change(remote_mach, username,
301 old_passwd, new_pw, err_str, sizeof(err_str));
303 fprintf(stderr, err_str);
307 ret = local_password_change(username, local_flags, new_pw,
308 err_str, sizeof(err_str), msg_str, sizeof(msg_str));
313 fprintf(stderr, err_str);
318 /*******************************************************************
319 Store the LDAP admin password in secrets.tdb
320 ******************************************************************/
321 static BOOL store_ldap_admin_pw (char* pw)
329 return secrets_store_ldap_pw(lp_ldap_admin_dn(), pw);
333 /*************************************************************
334 Handle password changing for root.
335 *************************************************************/
337 static int process_root(int local_flags)
341 char *old_passwd = NULL;
343 if (local_flags & LOCAL_SET_LDAP_ADMIN_PW) {
344 printf("Setting stored password for \"%s\" in secrets.tdb\n",
346 if (!store_ldap_admin_pw(ldap_secret))
347 DEBUG(0,("ERROR: Failed to store the ldap admin password!\n"));
351 /* Ensure we have a SAM sid. */
352 get_global_sam_sid();
355 * Ensure both add/delete user are not set
356 * Ensure add/delete user and either remote machine or join domain are
359 if(((local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER)) == (LOCAL_ADD_USER|LOCAL_DELETE_USER)) ||
360 ((local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER)) &&
361 (remote_machine != NULL))) {
365 /* Only load interfaces if we are doing network operations. */
367 if (remote_machine) {
371 if (!user_name[0] && (pwd = getpwuid_alloc(geteuid()))) {
372 fstrcpy(user_name, pwd->pw_name);
377 fprintf(stderr,"You must specify a username\n");
381 if (local_flags & LOCAL_TRUST_ACCOUNT) {
382 /* add the $ automatically */
386 * Remove any trailing '$' before we
387 * generate the initial machine password.
390 if (user_name[strlen(user_name)-1] == '$') {
391 user_name[strlen(user_name)-1] = 0;
394 if (local_flags & LOCAL_ADD_USER) {
395 SAFE_FREE(new_passwd);
396 new_passwd = smb_xstrdup(user_name);
397 strlower_m(new_passwd);
401 * Now ensure the username ends in '$' for
405 slprintf(buf, sizeof(buf)-1, "%s$", user_name);
406 fstrcpy(user_name, buf);
407 } else if (local_flags & LOCAL_INTERDOM_ACCOUNT) {
410 if ((local_flags & LOCAL_ADD_USER) && (new_passwd == NULL)) {
412 * Prompt for trusting domain's account password
414 new_passwd = prompt_for_new_password(stdin_passwd_get);
416 fprintf(stderr, "Unable to get newpassword.\n");
421 /* prepare uppercased and '$' terminated username */
422 slprintf(buf, sizeof(buf) - 1, "%s$", user_name);
423 fstrcpy(user_name, buf);
427 if (remote_machine != NULL) {
428 old_passwd = get_pass("Old SMB password:",stdin_passwd_get);
431 if (!(local_flags & LOCAL_SET_PASSWORD)) {
434 * If we are trying to enable a user, first we need to find out
435 * if they are using a modern version of the smbpasswd file that
436 * disables a user by just writing a flag into the file. If so
437 * then we can re-enable a user without prompting for a new
438 * password. If not (ie. they have a no stored password in the
439 * smbpasswd file) then we need to prompt for a new password.
442 if(local_flags & LOCAL_ENABLE_USER) {
443 SAM_ACCOUNT *sampass = NULL;
446 pdb_init_sam(&sampass);
447 ret = pdb_getsampwnam(sampass, user_name);
448 if((sampass != False) && (pdb_get_lanman_passwd(sampass) == NULL)) {
449 local_flags |= LOCAL_SET_PASSWORD;
451 pdb_free_sam(&sampass);
455 if((local_flags & LOCAL_SET_PASSWORD) && (new_passwd == NULL)) {
456 new_passwd = prompt_for_new_password(stdin_passwd_get);
459 fprintf(stderr, "Unable to get new password.\n");
465 if (!password_change(remote_machine, user_name, old_passwd, new_passwd, local_flags)) {
466 fprintf(stderr,"Failed to modify password entry for user %s\n", user_name);
472 printf("Password changed for user %s on %s.\n", user_name, remote_machine );
473 } else if(!(local_flags & (LOCAL_ADD_USER|LOCAL_DISABLE_USER|LOCAL_ENABLE_USER|LOCAL_DELETE_USER|LOCAL_SET_NO_PASSWORD|LOCAL_SET_PASSWORD))) {
474 SAM_ACCOUNT *sampass = NULL;
477 pdb_init_sam(&sampass);
478 ret = pdb_getsampwnam(sampass, user_name);
480 printf("Password changed for user %s.", user_name );
481 if( (ret != False) && (pdb_get_acct_ctrl(sampass)&ACB_DISABLED) )
482 printf(" User has disabled flag set.");
483 if((ret != False) && (pdb_get_acct_ctrl(sampass) & ACB_PWNOTREQ) )
484 printf(" User has no password flag set.");
486 pdb_free_sam(&sampass);
490 SAFE_FREE(new_passwd);
495 /*************************************************************
496 Handle password changing for non-root.
497 *************************************************************/
499 static int process_nonroot(int local_flags)
501 struct passwd *pwd = NULL;
506 if (local_flags & ~(LOCAL_AM_ROOT | LOCAL_SET_PASSWORD)) {
507 /* Extra flags that we can't honor non-root */
512 pwd = getpwuid_alloc(getuid());
514 fstrcpy(user_name,pwd->pw_name);
517 fprintf(stderr, "smbpasswd: you don't exist - go away\n");
523 * A non-root user is always setting a password
524 * via a remote machine (even if that machine is
528 load_interfaces(); /* Delayed from main() */
530 if (remote_machine == NULL) {
531 remote_machine = "127.0.0.1";
534 if (remote_machine != NULL) {
535 old_pw = get_pass("Old SMB password:",stdin_passwd_get);
539 new_pw = prompt_for_new_password(stdin_passwd_get);
542 new_pw = smb_xstrdup(new_passwd);
545 fprintf(stderr, "Unable to get new password.\n");
549 if (!password_change(remote_machine, user_name, old_pw, new_pw, 0)) {
550 fprintf(stderr,"Failed to change password for %s\n", user_name);
555 printf("Password changed for user %s\n", user_name);
566 /*********************************************************
568 **********************************************************/
569 int main(int argc, char **argv)
573 AllowDebugChange = False;
575 #if defined(HAVE_SET_AUTH_PARAMETERS)
576 set_auth_parameters(argc, argv);
577 #endif /* HAVE_SET_AUTH_PARAMETERS */
580 local_flags = LOCAL_AM_ROOT;
583 local_flags = process_options(argc, argv, local_flags);
585 setup_logging("smbpasswd", True);
588 * Set the machine NETBIOS name if not already
589 * set from the config file.
595 /* Check the effective uid - make sure we are not setuid */
596 if (is_setuid_root()) {
597 fprintf(stderr, "smbpasswd must *NOT* be setuid root.\n");
601 if (local_flags & LOCAL_AM_ROOT) {
603 return process_root(local_flags);
606 return process_nonroot(local_flags);