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 3 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, see <http://www.gnu.org/licenses/>. */
21 extern bool AllowDebugChange;
24 * Next two lines needed for SunOS and don't
25 * hurt anything else...
30 /* forced running in root-mode */
31 static bool got_username = False;
32 static bool stdin_passwd_get = False;
33 static fstring user_name;
34 static char *new_passwd = NULL;
35 static const char *remote_machine = NULL;
37 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]\n");
47 printf("otherwise:\n");
48 printf(" smbpasswd [options]\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 use stdin ldap admin 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,True)) {
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 NTSTATUS password_change(const char *remote_mach, char *username,
232 char *old_passwd, char *new_pw,
236 char *err_str = NULL;
237 char *msg_str = NULL;
239 if (remote_mach != NULL) {
240 if (local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER|LOCAL_DISABLE_USER|LOCAL_ENABLE_USER|
241 LOCAL_TRUST_ACCOUNT|LOCAL_SET_NO_PASSWORD)) {
242 /* these things can't be done remotely yet */
243 return NT_STATUS_UNSUCCESSFUL;
245 ret = remote_password_change(remote_mach, username,
246 old_passwd, new_pw, err_str, sizeof(err_str));
248 fprintf(stderr, "%s", err_str);
252 ret = local_password_change(username, local_flags, new_pw,
256 printf("%s", msg_str);
258 fprintf(stderr, "%s", err_str);
265 /*******************************************************************
266 Store the LDAP admin password in secrets.tdb
267 ******************************************************************/
268 static bool store_ldap_admin_pw (char* pw)
276 return secrets_store_ldap_pw(lp_ldap_admin_dn(), pw);
280 /*************************************************************
281 Handle password changing for root.
282 *************************************************************/
284 static int process_root(int local_flags)
288 char *old_passwd = NULL;
290 if (local_flags & LOCAL_SET_LDAP_ADMIN_PW) {
291 char *ldap_admin_dn = lp_ldap_admin_dn();
292 if ( ! *ldap_admin_dn ) {
293 DEBUG(0,("ERROR: 'ldap admin dn' not defined! Please check your smb.conf\n"));
297 printf("Setting stored password for \"%s\" in secrets.tdb\n", ldap_admin_dn);
298 if ( ! *ldap_secret ) {
299 new_passwd = prompt_for_new_password(stdin_passwd_get);
300 fstrcpy(ldap_secret, new_passwd);
302 if (!store_ldap_admin_pw(ldap_secret)) {
303 DEBUG(0,("ERROR: Failed to store the ldap admin password!\n"));
308 /* Ensure passdb startup(). */
309 if(!initialize_password_db(False, NULL)) {
310 DEBUG(0, ("Failed to open passdb!\n"));
314 /* Ensure we have a SAM sid. */
315 get_global_sam_sid();
318 * Ensure both add/delete user are not set
319 * Ensure add/delete user and either remote machine or join domain are
322 if(((local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER)) == (LOCAL_ADD_USER|LOCAL_DELETE_USER)) ||
323 ((local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER)) &&
324 (remote_machine != NULL))) {
328 /* Only load interfaces if we are doing network operations. */
330 if (remote_machine) {
334 if (!user_name[0] && (pwd = getpwuid_alloc(NULL, geteuid()))) {
335 fstrcpy(user_name, pwd->pw_name);
340 fprintf(stderr,"You must specify a username\n");
344 if (local_flags & LOCAL_TRUST_ACCOUNT) {
345 /* add the $ automatically */
349 * Remove any trailing '$' before we
350 * generate the initial machine password.
353 if (user_name[strlen(user_name)-1] == '$') {
354 user_name[strlen(user_name)-1] = 0;
357 if (local_flags & LOCAL_ADD_USER) {
358 SAFE_FREE(new_passwd);
359 new_passwd = smb_xstrdup(user_name);
360 strlower_m(new_passwd);
364 * Now ensure the username ends in '$' for
368 slprintf(buf, sizeof(buf)-1, "%s$", user_name);
369 fstrcpy(user_name, buf);
370 } else if (local_flags & LOCAL_INTERDOM_ACCOUNT) {
373 if ((local_flags & LOCAL_ADD_USER) && (new_passwd == NULL)) {
375 * Prompt for trusting domain's account password
377 new_passwd = prompt_for_new_password(stdin_passwd_get);
379 fprintf(stderr, "Unable to get newpassword.\n");
384 /* prepare uppercased and '$' terminated username */
385 slprintf(buf, sizeof(buf) - 1, "%s$", user_name);
386 fstrcpy(user_name, buf);
390 if (remote_machine != NULL) {
391 old_passwd = get_pass("Old SMB password:",stdin_passwd_get);
394 if (!(local_flags & LOCAL_SET_PASSWORD)) {
397 * If we are trying to enable a user, first we need to find out
398 * if they are using a modern version of the smbpasswd file that
399 * disables a user by just writing a flag into the file. If so
400 * then we can re-enable a user without prompting for a new
401 * password. If not (ie. they have a no stored password in the
402 * smbpasswd file) then we need to prompt for a new password.
405 if(local_flags & LOCAL_ENABLE_USER) {
406 struct samu *sampass = NULL;
408 sampass = samu_new( NULL );
410 fprintf(stderr, "talloc fail for struct samu.\n");
413 if (!pdb_getsampwnam(sampass, user_name)) {
414 fprintf(stderr, "Failed to find user %s in passdb backend.\n",
419 if(pdb_get_nt_passwd(sampass) == NULL) {
420 local_flags |= LOCAL_SET_PASSWORD;
422 TALLOC_FREE(sampass);
426 if((local_flags & LOCAL_SET_PASSWORD) && (new_passwd == NULL)) {
427 new_passwd = prompt_for_new_password(stdin_passwd_get);
430 fprintf(stderr, "Unable to get new password.\n");
436 if (!NT_STATUS_IS_OK(password_change(remote_machine, user_name,
437 old_passwd, new_passwd,
439 fprintf(stderr,"Failed to modify password entry for user %s\n", user_name);
445 printf("Password changed for user %s on %s.\n", user_name, remote_machine );
446 } else if(!(local_flags & (LOCAL_ADD_USER|LOCAL_DISABLE_USER|LOCAL_ENABLE_USER|LOCAL_DELETE_USER|LOCAL_SET_NO_PASSWORD|LOCAL_SET_PASSWORD))) {
447 struct samu *sampass = NULL;
449 sampass = samu_new( NULL );
451 fprintf(stderr, "talloc fail for struct samu.\n");
455 if (!pdb_getsampwnam(sampass, user_name)) {
456 fprintf(stderr, "Failed to find user %s in passdb backend.\n",
461 printf("Password changed for user %s.", user_name );
462 if(pdb_get_acct_ctrl(sampass)&ACB_DISABLED) {
463 printf(" User has disabled flag set.");
465 if(pdb_get_acct_ctrl(sampass) & ACB_PWNOTREQ) {
466 printf(" User has no password flag set.");
469 TALLOC_FREE(sampass);
473 SAFE_FREE(new_passwd);
478 /*************************************************************
479 Handle password changing for non-root.
480 *************************************************************/
482 static int process_nonroot(int local_flags)
484 struct passwd *pwd = NULL;
489 if (local_flags & ~(LOCAL_AM_ROOT | LOCAL_SET_PASSWORD)) {
490 /* Extra flags that we can't honor non-root */
495 pwd = getpwuid_alloc(NULL, getuid());
497 fstrcpy(user_name,pwd->pw_name);
500 fprintf(stderr, "smbpasswd: cannot lookup user name for uid %u\n", (unsigned int)getuid());
506 * A non-root user is always setting a password
507 * via a remote machine (even if that machine is
511 load_interfaces(); /* Delayed from main() */
513 if (remote_machine == NULL) {
514 remote_machine = "127.0.0.1";
517 if (remote_machine != NULL) {
518 old_pw = get_pass("Old SMB password:",stdin_passwd_get);
522 new_pw = prompt_for_new_password(stdin_passwd_get);
525 new_pw = smb_xstrdup(new_passwd);
528 fprintf(stderr, "Unable to get new password.\n");
532 if (!NT_STATUS_IS_OK(password_change(remote_machine, user_name, old_pw,
534 fprintf(stderr,"Failed to change password for %s\n", user_name);
539 printf("Password changed for user %s\n", user_name);
550 /*********************************************************
552 **********************************************************/
553 int main(int argc, char **argv)
555 TALLOC_CTX *frame = talloc_stackframe();
559 AllowDebugChange = False;
561 #if defined(HAVE_SET_AUTH_PARAMETERS)
562 set_auth_parameters(argc, argv);
563 #endif /* HAVE_SET_AUTH_PARAMETERS */
566 local_flags = LOCAL_AM_ROOT;
571 local_flags = process_options(argc, argv, local_flags);
573 setup_logging("smbpasswd", True);
576 * Set the machine NETBIOS name if not already
577 * set from the config file.
583 /* Check the effective uid - make sure we are not setuid */
584 if (is_setuid_root()) {
585 fprintf(stderr, "smbpasswd must *NOT* be setuid root.\n");
589 if (local_flags & LOCAL_AM_ROOT) {
591 return process_root(local_flags);
594 ret = process_nonroot(local_flags);