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 #include "../librpc/gen_ndr/samr.h"
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)
86 const char *configfile = get_dyn_CONFIGFILE();
88 local_flags |= LOCAL_SET_PASSWORD;
90 ZERO_STRUCT(user_name);
94 while ((ch = getopt(argc, argv, "c:axdehminjr:sw:R:D:U:LW")) != EOF) {
97 #if !defined(NSS_WRAPPER)
99 fprintf(stderr, "smbpasswd -L can only be used by root.\n");
103 local_flags |= LOCAL_AM_ROOT;
109 local_flags |= LOCAL_ADD_USER;
112 local_flags |= LOCAL_DELETE_USER;
113 local_flags &= ~LOCAL_SET_PASSWORD;
116 local_flags |= LOCAL_DISABLE_USER;
117 local_flags &= ~LOCAL_SET_PASSWORD;
120 local_flags |= LOCAL_ENABLE_USER;
121 local_flags &= ~LOCAL_SET_PASSWORD;
124 local_flags |= LOCAL_TRUST_ACCOUNT;
127 local_flags |= LOCAL_INTERDOM_ACCOUNT;
130 d_printf("See 'net join' for this functionality\n");
134 local_flags |= LOCAL_SET_NO_PASSWORD;
135 local_flags &= ~LOCAL_SET_PASSWORD;
136 new_passwd = smb_xstrdup("NO PASSWORD");
139 remote_machine = optarg;
142 set_line_buffering(stdin);
143 set_line_buffering(stdout);
144 set_line_buffering(stderr);
145 stdin_passwd_get = True;
148 local_flags |= LOCAL_SET_LDAP_ADMIN_PW;
149 fstrcpy(ldap_secret, optarg);
152 lp_set_name_resolve_order(optarg);
155 lp_set_cmdline("log level", optarg);
159 fstrcpy(user_name, optarg);
162 local_flags |= LOCAL_SET_LDAP_ADMIN_PW;
178 fstrcpy(user_name, "");
181 if (!(local_flags & LOCAL_AM_ROOT)) {
187 fstrcpy(user_name, argv[0]);
195 if (!lp_load(configfile,True,False,False,True)) {
196 fprintf(stderr, "Can't load %s - run testparm to debug it\n",
204 /*************************************************************
205 Utility function to prompt for new password.
206 *************************************************************/
207 static char *prompt_for_new_password(bool stdin_get)
214 p = get_pass("New SMB password:", stdin_get);
219 p = get_pass("Retype new SMB password:", stdin_get);
221 if (strcmp(p, new_pw)) {
222 fprintf(stderr, "Mismatch - password unchanged.\n");
232 /*************************************************************
233 Change a password either locally or remotely.
234 *************************************************************/
236 static NTSTATUS password_change(const char *remote_mach, char *username,
237 char *old_passwd, char *new_pw,
241 char *err_str = NULL;
242 char *msg_str = NULL;
244 if (remote_mach != NULL) {
245 if (local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER|
246 LOCAL_DISABLE_USER|LOCAL_ENABLE_USER|
247 LOCAL_TRUST_ACCOUNT|LOCAL_SET_NO_PASSWORD)) {
248 /* these things can't be done remotely yet */
249 fprintf(stderr, "Invalid remote operation!\n");
250 return NT_STATUS_UNSUCCESSFUL;
252 ret = remote_password_change(remote_mach, username,
253 old_passwd, new_pw, &err_str);
255 ret = local_password_change(username, local_flags, new_pw,
260 printf("%s", msg_str);
263 fprintf(stderr, "%s", err_str);
265 if (!NT_STATUS_IS_OK(ret) && !err_str) {
266 fprintf(stderr, "Failed to change password!\n");
274 /*******************************************************************
275 Store the LDAP admin password in secrets.tdb
276 ******************************************************************/
277 static bool store_ldap_admin_pw (char* pw)
285 return secrets_store_ldap_pw(lp_ldap_admin_dn(), pw);
289 /*************************************************************
290 Handle password changing for root.
291 *************************************************************/
293 static int process_root(int local_flags)
297 char *old_passwd = NULL;
299 if (local_flags & LOCAL_SET_LDAP_ADMIN_PW) {
300 char *ldap_admin_dn = lp_ldap_admin_dn();
301 if ( ! *ldap_admin_dn ) {
302 DEBUG(0,("ERROR: 'ldap admin dn' not defined! Please check your smb.conf\n"));
306 printf("Setting stored password for \"%s\" in secrets.tdb\n", ldap_admin_dn);
307 if ( ! *ldap_secret ) {
308 new_passwd = prompt_for_new_password(stdin_passwd_get);
309 fstrcpy(ldap_secret, new_passwd);
311 if (!store_ldap_admin_pw(ldap_secret)) {
312 DEBUG(0,("ERROR: Failed to store the ldap admin password!\n"));
317 /* Ensure passdb startup(). */
318 if(!initialize_password_db(False, NULL)) {
319 DEBUG(0, ("Failed to open passdb!\n"));
323 /* Ensure we have a SAM sid. */
324 get_global_sam_sid();
327 * Ensure both add/delete user are not set
328 * Ensure add/delete user and either remote machine or join domain are
331 if(((local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER)) == (LOCAL_ADD_USER|LOCAL_DELETE_USER)) ||
332 ((local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER)) &&
333 (remote_machine != NULL))) {
337 /* Only load interfaces if we are doing network operations. */
339 if (remote_machine) {
343 if (!user_name[0] && (pwd = getpwuid_alloc(talloc_tos(), geteuid()))) {
344 fstrcpy(user_name, pwd->pw_name);
349 fprintf(stderr,"You must specify a username\n");
353 if (local_flags & LOCAL_TRUST_ACCOUNT) {
354 /* add the $ automatically */
358 * Remove any trailing '$' before we
359 * generate the initial machine password.
362 if (user_name[strlen(user_name)-1] == '$') {
363 user_name[strlen(user_name)-1] = 0;
366 if (local_flags & LOCAL_ADD_USER) {
367 SAFE_FREE(new_passwd);
368 new_passwd = smb_xstrdup(user_name);
369 strlower_m(new_passwd);
373 * Now ensure the username ends in '$' for
377 slprintf(buf, sizeof(buf)-1, "%s$", user_name);
378 fstrcpy(user_name, buf);
379 } else if (local_flags & LOCAL_INTERDOM_ACCOUNT) {
382 if ((local_flags & LOCAL_ADD_USER) && (new_passwd == NULL)) {
384 * Prompt for trusting domain's account password
386 new_passwd = prompt_for_new_password(stdin_passwd_get);
388 fprintf(stderr, "Unable to get newpassword.\n");
393 /* prepare uppercased and '$' terminated username */
394 slprintf(buf, sizeof(buf) - 1, "%s$", user_name);
395 fstrcpy(user_name, buf);
399 if (remote_machine != NULL) {
400 old_passwd = get_pass("Old SMB password:",stdin_passwd_get);
402 fprintf(stderr, "Unable to get old password.\n");
407 if (!(local_flags & LOCAL_SET_PASSWORD)) {
410 * If we are trying to enable a user, first we need to find out
411 * if they are using a modern version of the smbpasswd file that
412 * disables a user by just writing a flag into the file. If so
413 * then we can re-enable a user without prompting for a new
414 * password. If not (ie. they have a no stored password in the
415 * smbpasswd file) then we need to prompt for a new password.
418 if(local_flags & LOCAL_ENABLE_USER) {
419 struct samu *sampass = NULL;
421 sampass = samu_new( NULL );
423 fprintf(stderr, "talloc fail for struct samu.\n");
426 if (!pdb_getsampwnam(sampass, user_name)) {
427 fprintf(stderr, "Failed to find user %s in passdb backend.\n",
432 if(pdb_get_nt_passwd(sampass) == NULL) {
433 local_flags |= LOCAL_SET_PASSWORD;
435 TALLOC_FREE(sampass);
439 if((local_flags & LOCAL_SET_PASSWORD) && (new_passwd == NULL)) {
441 new_passwd = prompt_for_new_password(stdin_passwd_get);
443 fprintf(stderr, "Unable to get new password.\n");
449 if (!NT_STATUS_IS_OK(password_change(remote_machine, user_name,
450 old_passwd, new_passwd,
457 printf("Password changed for user %s on %s.\n", user_name, remote_machine );
458 } else if(!(local_flags & (LOCAL_ADD_USER|LOCAL_DISABLE_USER|LOCAL_ENABLE_USER|LOCAL_DELETE_USER|LOCAL_SET_NO_PASSWORD|LOCAL_SET_PASSWORD))) {
459 struct samu *sampass = NULL;
461 sampass = samu_new( NULL );
463 fprintf(stderr, "talloc fail for struct samu.\n");
467 if (!pdb_getsampwnam(sampass, user_name)) {
468 fprintf(stderr, "Failed to find user %s in passdb backend.\n",
473 printf("Password changed for user %s.", user_name );
474 if(pdb_get_acct_ctrl(sampass)&ACB_DISABLED) {
475 printf(" User has disabled flag set.");
477 if(pdb_get_acct_ctrl(sampass) & ACB_PWNOTREQ) {
478 printf(" User has no password flag set.");
481 TALLOC_FREE(sampass);
485 SAFE_FREE(old_passwd);
486 SAFE_FREE(new_passwd);
491 /*************************************************************
492 Handle password changing for non-root.
493 *************************************************************/
495 static int process_nonroot(int local_flags)
497 struct passwd *pwd = NULL;
502 if (local_flags & ~(LOCAL_AM_ROOT | LOCAL_SET_PASSWORD)) {
503 /* Extra flags that we can't honor non-root */
508 pwd = getpwuid_alloc(talloc_tos(), getuid());
510 fstrcpy(user_name,pwd->pw_name);
513 fprintf(stderr, "smbpasswd: cannot lookup user name for uid %u\n", (unsigned int)getuid());
519 * A non-root user is always setting a password
520 * via a remote machine (even if that machine is
524 load_interfaces(); /* Delayed from main() */
526 if (remote_machine == NULL) {
527 remote_machine = "127.0.0.1";
530 if (remote_machine != NULL) {
531 old_pw = get_pass("Old SMB password:",stdin_passwd_get);
535 new_pw = prompt_for_new_password(stdin_passwd_get);
538 new_pw = smb_xstrdup(new_passwd);
541 fprintf(stderr, "Unable to get new password.\n");
545 if (!NT_STATUS_IS_OK(password_change(remote_machine, user_name, old_pw,
551 printf("Password changed for user %s\n", user_name);
562 /*********************************************************
564 **********************************************************/
565 int main(int argc, char **argv)
567 TALLOC_CTX *frame = talloc_stackframe();
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;
581 local_flags = process_options(argc, argv, local_flags);
583 setup_logging("smbpasswd", DEBUG_STDERR);
586 * Set the machine NETBIOS name if not already
587 * set from the config file.
593 /* Check the effective uid - make sure we are not setuid */
594 if (is_setuid_root()) {
595 fprintf(stderr, "smbpasswd must *NOT* be setuid root.\n");
599 if (local_flags & LOCAL_AM_ROOT) {
601 return process_root(local_flags);
604 ret = process_nonroot(local_flags);