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 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 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( 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)
345 printf("Setting stored password for \"%s\" in secrets.tdb\n",
347 if (!store_ldap_admin_pw(ldap_secret))
348 DEBUG(0,("ERROR: Failed to store the ldap admin password!\n"));
353 * Ensure both add/delete user are not set
354 * Ensure add/delete user and either remote machine or join domain are
357 if(((local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER)) == (LOCAL_ADD_USER|LOCAL_DELETE_USER)) ||
358 ((local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER)) &&
359 (remote_machine != NULL))) {
363 /* Only load interfaces if we are doing network operations. */
365 if (remote_machine) {
369 if (!user_name[0] && (pwd = getpwuid_alloc(geteuid()))) {
370 fstrcpy(user_name, pwd->pw_name);
375 fprintf(stderr,"You must specify a username\n");
379 if (local_flags & LOCAL_TRUST_ACCOUNT) {
380 /* add the $ automatically */
384 * Remove any trailing '$' before we
385 * generate the initial machine password.
388 if (user_name[strlen(user_name)-1] == '$') {
389 user_name[strlen(user_name)-1] = 0;
392 if (local_flags & LOCAL_ADD_USER) {
393 SAFE_FREE(new_passwd);
394 new_passwd = smb_xstrdup(user_name);
395 strlower(new_passwd);
399 * Now ensure the username ends in '$' for
403 slprintf(buf, sizeof(buf)-1, "%s$", user_name);
404 fstrcpy(user_name, buf);
405 } else if (local_flags & LOCAL_INTERDOM_ACCOUNT) {
408 if (local_flags & LOCAL_ADD_USER) {
410 * Prompt for trusting domain's account password
412 new_passwd = prompt_for_new_password(stdin_passwd_get);
414 fprintf(stderr, "Unable to get newpassword.\n");
419 /* prepare uppercased and '$' terminated username */
420 slprintf(buf, sizeof(buf) - 1, "%s$", user_name);
421 fstrcpy(user_name, buf);
425 if (remote_machine != NULL) {
426 old_passwd = get_pass("Old SMB password:",stdin_passwd_get);
429 if (!(local_flags & LOCAL_SET_PASSWORD)) {
432 * If we are trying to enable a user, first we need to find out
433 * if they are using a modern version of the smbpasswd file that
434 * disables a user by just writing a flag into the file. If so
435 * then we can re-enable a user without prompting for a new
436 * password. If not (ie. they have a no stored password in the
437 * smbpasswd file) then we need to prompt for a new password.
440 if(local_flags & LOCAL_ENABLE_USER) {
441 SAM_ACCOUNT *sampass = NULL;
444 pdb_init_sam(&sampass);
445 ret = pdb_getsampwnam(sampass, user_name);
446 if((sampass != False) && (pdb_get_lanman_passwd(sampass) == NULL)) {
447 local_flags |= LOCAL_SET_PASSWORD;
449 pdb_free_sam(&sampass);
453 if(local_flags & LOCAL_SET_PASSWORD) {
454 new_passwd = prompt_for_new_password(stdin_passwd_get);
457 fprintf(stderr, "Unable to get new password.\n");
463 if (!password_change(remote_machine, user_name, old_passwd, new_passwd, local_flags)) {
464 fprintf(stderr,"Failed to modify password entry for user %s\n", user_name);
470 printf("Password changed for user %s on %s.\n", user_name, remote_machine );
471 } else if(!(local_flags & (LOCAL_ADD_USER|LOCAL_DISABLE_USER|LOCAL_ENABLE_USER|LOCAL_DELETE_USER|LOCAL_SET_NO_PASSWORD|LOCAL_SET_PASSWORD))) {
472 SAM_ACCOUNT *sampass = NULL;
475 pdb_init_sam(&sampass);
476 ret = pdb_getsampwnam(sampass, user_name);
478 printf("Password changed for user %s.", user_name );
479 if( (ret != False) && (pdb_get_acct_ctrl(sampass)&ACB_DISABLED) )
480 printf(" User has disabled flag set.");
481 if((ret != False) && (pdb_get_acct_ctrl(sampass) & ACB_PWNOTREQ) )
482 printf(" User has no password flag set.");
484 pdb_free_sam(&sampass);
488 SAFE_FREE(new_passwd);
493 /*************************************************************
494 Handle password changing for non-root.
495 *************************************************************/
497 static int process_nonroot(int local_flags)
499 struct passwd *pwd = NULL;
501 char *old_passwd = NULL;
503 if (local_flags & ~(LOCAL_AM_ROOT | LOCAL_SET_PASSWORD)) {
504 /* Extra flags that we can't honor non-root */
509 pwd = getpwuid_alloc(getuid());
511 fstrcpy(user_name,pwd->pw_name);
514 fprintf(stderr, "smbpasswd: you don't exist - go away\n");
520 * A non-root user is always setting a password
521 * via a remote machine (even if that machine is
525 load_interfaces(); /* Delayed from main() */
527 if (remote_machine == NULL) {
528 remote_machine = "127.0.0.1";
531 if (remote_machine != NULL) {
532 old_passwd = get_pass("Old SMB password:",stdin_passwd_get);
536 new_passwd = prompt_for_new_password(stdin_passwd_get);
540 fprintf(stderr, "Unable to get new password.\n");
544 if (!password_change(remote_machine, user_name, old_passwd, new_passwd, 0)) {
545 fprintf(stderr,"Failed to change password for %s\n", user_name);
550 printf("Password changed for user %s\n", user_name);
553 SAFE_FREE(old_passwd);
554 SAFE_FREE(new_passwd);
561 /*********************************************************
563 **********************************************************/
564 int main(int argc, char **argv)
568 AllowDebugChange = False;
570 #if defined(HAVE_SET_AUTH_PARAMETERS)
571 set_auth_parameters(argc, argv);
572 #endif /* HAVE_SET_AUTH_PARAMETERS */
575 local_flags = LOCAL_AM_ROOT;
578 local_flags = process_options(argc, argv, local_flags);
580 setup_logging("smbpasswd", True);
583 * Set the machine NETBIOS name if not already
584 * set from the config file.
590 /* Check the effective uid - make sure we are not setuid */
591 if (is_setuid_root()) {
592 fprintf(stderr, "smbpasswd must *NOT* be setuid root.\n");
596 if (local_flags & LOCAL_AM_ROOT) {
598 return process_root(local_flags);
601 return process_nonroot(local_flags);