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/>. */
20 #include "system/passwd.h"
22 #include "../librpc/gen_ndr/samr.h"
23 #include "../lib/util/util_pw.h"
27 * Next two lines needed for SunOS and don't
28 * hurt anything else...
33 /* forced running in root-mode */
34 static bool got_username = False;
35 static bool stdin_passwd_get = False;
36 static fstring user_name;
37 static char *new_passwd = NULL;
38 static const char *remote_machine = NULL;
40 static fstring ldap_secret;
43 /*********************************************************
44 Print command usage on stderr and die.
45 **********************************************************/
46 static void usage(void)
48 printf("When run by root:\n");
49 printf(" smbpasswd [options] [username]\n");
50 printf("otherwise:\n");
51 printf(" smbpasswd [options]\n\n");
54 printf(" -L local mode (must be first option)\n");
55 printf(" -h print this usage message\n");
56 printf(" -s use stdin for password prompt\n");
57 printf(" -c smb.conf file Use the given path to the smb.conf file\n");
58 printf(" -D LEVEL debug level\n");
59 printf(" -r MACHINE remote machine\n");
60 printf(" -U USER remote username\n");
62 printf("extra options when run by root or in local mode:\n");
63 printf(" -a add user\n");
64 printf(" -d disable user\n");
65 printf(" -e enable user\n");
66 printf(" -i interdomain trust account\n");
67 printf(" -m machine trust account\n");
68 printf(" -n set no password\n");
69 printf(" -W use stdin ldap admin password\n");
70 printf(" -w PASSWORD ldap admin password\n");
71 printf(" -x delete user\n");
72 printf(" -R ORDER name resolve order\n");
77 static void set_line_buffering(FILE *f)
79 setvbuf(f, NULL, _IOLBF, 0);
82 /*******************************************************************
83 Process command line options
84 ******************************************************************/
86 static int process_options(int argc, char **argv, int local_flags)
89 const char *configfile = get_dyn_CONFIGFILE();
91 local_flags |= LOCAL_SET_PASSWORD;
93 ZERO_STRUCT(user_name);
97 while ((ch = getopt(argc, argv, "c:axdehminjr:sw:R:D:U:LW")) != EOF) {
100 #if !defined(NSS_WRAPPER)
102 fprintf(stderr, "smbpasswd -L can only be used by root.\n");
106 local_flags |= LOCAL_AM_ROOT;
110 set_dyn_CONFIGFILE(optarg);
113 local_flags |= LOCAL_ADD_USER;
116 local_flags |= LOCAL_DELETE_USER;
117 local_flags &= ~LOCAL_SET_PASSWORD;
120 local_flags |= LOCAL_DISABLE_USER;
121 local_flags &= ~LOCAL_SET_PASSWORD;
124 local_flags |= LOCAL_ENABLE_USER;
125 local_flags &= ~LOCAL_SET_PASSWORD;
128 local_flags |= LOCAL_TRUST_ACCOUNT;
131 local_flags |= LOCAL_INTERDOM_ACCOUNT;
134 d_printf("See 'net join' for this functionality\n");
138 local_flags |= LOCAL_SET_NO_PASSWORD;
139 local_flags &= ~LOCAL_SET_PASSWORD;
140 new_passwd = smb_xstrdup("NO PASSWORD");
143 remote_machine = optarg;
146 set_line_buffering(stdin);
147 set_line_buffering(stdout);
148 set_line_buffering(stderr);
149 stdin_passwd_get = True;
152 local_flags |= LOCAL_SET_LDAP_ADMIN_PW;
153 fstrcpy(ldap_secret, optarg);
156 lp_set_name_resolve_order(optarg);
159 lp_set_cmdline("log level", optarg);
163 fstrcpy(user_name, optarg);
166 local_flags |= LOCAL_SET_LDAP_ADMIN_PW;
182 fstrcpy(user_name, "");
185 if (!(local_flags & LOCAL_AM_ROOT)) {
191 fstrcpy(user_name, argv[0]);
199 if (!lp_load(configfile,True,False,False,True)) {
200 fprintf(stderr, "Can't load %s - run testparm to debug it\n",
208 /*************************************************************
209 Utility function to prompt for new password.
210 *************************************************************/
211 static char *prompt_for_new_password(bool stdin_get)
218 p = get_pass("New SMB password:", stdin_get);
223 p = get_pass("Retype new SMB password:", stdin_get);
225 if (strcmp(p, new_pw)) {
226 fprintf(stderr, "Mismatch - password unchanged.\n");
236 /*************************************************************
237 Change a password either locally or remotely.
238 *************************************************************/
240 static NTSTATUS password_change(const char *remote_mach, char *username,
241 char *old_passwd, char *new_pw,
245 char *err_str = NULL;
246 char *msg_str = NULL;
248 if (remote_mach != NULL) {
249 if (local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER|
250 LOCAL_DISABLE_USER|LOCAL_ENABLE_USER|
251 LOCAL_TRUST_ACCOUNT|LOCAL_SET_NO_PASSWORD)) {
252 /* these things can't be done remotely yet */
253 fprintf(stderr, "Invalid remote operation!\n");
254 return NT_STATUS_UNSUCCESSFUL;
256 ret = remote_password_change(remote_mach, username,
257 old_passwd, new_pw, &err_str);
259 ret = local_password_change(username, local_flags, new_pw,
264 printf("%s", msg_str);
267 fprintf(stderr, "%s", err_str);
269 if (!NT_STATUS_IS_OK(ret) && !err_str) {
270 fprintf(stderr, "Failed to change password!\n");
278 /*******************************************************************
279 Store the LDAP admin password in secrets.tdb
280 ******************************************************************/
281 static bool store_ldap_admin_pw (char* pw)
289 return secrets_store_ldap_pw(lp_ldap_admin_dn(), pw);
293 /*************************************************************
294 Handle password changing for root.
295 *************************************************************/
297 static int process_root(int local_flags)
301 char *old_passwd = NULL;
303 if (local_flags & LOCAL_SET_LDAP_ADMIN_PW) {
304 char *ldap_admin_dn = lp_ldap_admin_dn();
305 if ( ! *ldap_admin_dn ) {
306 DEBUG(0,("ERROR: 'ldap admin dn' not defined! Please check your smb.conf\n"));
310 printf("Setting stored password for \"%s\" in secrets.tdb\n", ldap_admin_dn);
311 if ( ! *ldap_secret ) {
312 new_passwd = prompt_for_new_password(stdin_passwd_get);
313 fstrcpy(ldap_secret, new_passwd);
315 if (!store_ldap_admin_pw(ldap_secret)) {
316 DEBUG(0,("ERROR: Failed to store the ldap admin password!\n"));
321 /* Ensure passdb startup(). */
322 if(!initialize_password_db(False, NULL)) {
323 DEBUG(0, ("Failed to open passdb!\n"));
327 /* Ensure we have a SAM sid. */
328 get_global_sam_sid();
331 * Ensure both add/delete user are not set
332 * Ensure add/delete user and either remote machine or join domain are
335 if(((local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER)) == (LOCAL_ADD_USER|LOCAL_DELETE_USER)) ||
336 ((local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER)) &&
337 (remote_machine != NULL))) {
341 /* Only load interfaces if we are doing network operations. */
343 if (remote_machine) {
347 if (!user_name[0] && (pwd = getpwuid_alloc(talloc_tos(), geteuid()))) {
348 fstrcpy(user_name, pwd->pw_name);
353 fprintf(stderr,"You must specify a username\n");
357 if (local_flags & LOCAL_TRUST_ACCOUNT) {
358 /* add the $ automatically */
362 * Remove any trailing '$' before we
363 * generate the initial machine password.
366 if (user_name[strlen(user_name)-1] == '$') {
367 user_name[strlen(user_name)-1] = 0;
370 if (local_flags & LOCAL_ADD_USER) {
371 SAFE_FREE(new_passwd);
372 new_passwd = smb_xstrdup(user_name);
373 strlower_m(new_passwd);
377 * Now ensure the username ends in '$' for
381 slprintf(buf, sizeof(buf)-1, "%s$", user_name);
382 strlcpy(user_name, buf, sizeof(user_name));
383 } else if (local_flags & LOCAL_INTERDOM_ACCOUNT) {
386 if ((local_flags & LOCAL_ADD_USER) && (new_passwd == NULL)) {
388 * Prompt for trusting domain's account password
390 new_passwd = prompt_for_new_password(stdin_passwd_get);
392 fprintf(stderr, "Unable to get newpassword.\n");
397 /* prepare uppercased and '$' terminated username */
398 slprintf(buf, sizeof(buf) - 1, "%s$", user_name);
399 strlcpy(user_name, buf, sizeof(user_name));
403 if (remote_machine != NULL) {
404 old_passwd = get_pass("Old SMB password:",stdin_passwd_get);
406 fprintf(stderr, "Unable to get old password.\n");
411 if (!(local_flags & LOCAL_SET_PASSWORD)) {
414 * If we are trying to enable a user, first we need to find out
415 * if they are using a modern version of the smbpasswd file that
416 * disables a user by just writing a flag into the file. If so
417 * then we can re-enable a user without prompting for a new
418 * password. If not (ie. they have a no stored password in the
419 * smbpasswd file) then we need to prompt for a new password.
422 if(local_flags & LOCAL_ENABLE_USER) {
423 struct samu *sampass = NULL;
425 sampass = samu_new( NULL );
427 fprintf(stderr, "talloc fail for struct samu.\n");
430 if (!pdb_getsampwnam(sampass, user_name)) {
431 fprintf(stderr, "Failed to find user %s in passdb backend.\n",
436 if(pdb_get_nt_passwd(sampass) == NULL) {
437 local_flags |= LOCAL_SET_PASSWORD;
439 TALLOC_FREE(sampass);
443 if((local_flags & LOCAL_SET_PASSWORD) && (new_passwd == NULL)) {
445 new_passwd = prompt_for_new_password(stdin_passwd_get);
447 fprintf(stderr, "Unable to get new password.\n");
453 if (!NT_STATUS_IS_OK(password_change(remote_machine, user_name,
454 old_passwd, new_passwd,
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 struct samu *sampass = NULL;
465 sampass = samu_new( NULL );
467 fprintf(stderr, "talloc fail for struct samu.\n");
471 if (!pdb_getsampwnam(sampass, user_name)) {
472 fprintf(stderr, "Failed to find user %s in passdb backend.\n",
477 printf("Password changed for user %s.", user_name );
478 if(pdb_get_acct_ctrl(sampass)&ACB_DISABLED) {
479 printf(" User has disabled flag set.");
481 if(pdb_get_acct_ctrl(sampass) & ACB_PWNOTREQ) {
482 printf(" User has no password flag set.");
485 TALLOC_FREE(sampass);
489 SAFE_FREE(old_passwd);
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(talloc_tos(), getuid());
514 fstrcpy(user_name,pwd->pw_name);
517 fprintf(stderr, "smbpasswd: cannot lookup user name for uid %u\n", (unsigned int)getuid());
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 (!NT_STATUS_IS_OK(password_change(remote_machine, user_name, old_pw,
555 printf("Password changed for user %s\n", user_name);
566 /*********************************************************
568 **********************************************************/
569 int main(int argc, char **argv)
571 TALLOC_CTX *frame = talloc_stackframe();
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;
585 local_flags = process_options(argc, argv, local_flags);
587 setup_logging("smbpasswd", DEBUG_STDERR);
590 * Set the machine NETBIOS name if not already
591 * set from the config file.
597 /* Check the effective uid - make sure we are not setuid */
598 if (is_setuid_root()) {
599 fprintf(stderr, "smbpasswd must *NOT* be setuid root.\n");
603 if (local_flags & LOCAL_AM_ROOT) {
605 return process_root(local_flags);
608 ret = process_nonroot(local_flags);