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) {
101 fprintf(stderr, "smbpasswd -L can only be used by root.\n");
104 local_flags |= LOCAL_AM_ROOT;
108 set_dyn_CONFIGFILE(optarg);
111 local_flags |= LOCAL_ADD_USER;
114 local_flags |= LOCAL_DELETE_USER;
115 local_flags &= ~LOCAL_SET_PASSWORD;
118 local_flags |= LOCAL_DISABLE_USER;
119 local_flags &= ~LOCAL_SET_PASSWORD;
122 local_flags |= LOCAL_ENABLE_USER;
123 local_flags &= ~LOCAL_SET_PASSWORD;
126 local_flags |= LOCAL_TRUST_ACCOUNT;
129 local_flags |= LOCAL_INTERDOM_ACCOUNT;
132 d_printf("See 'net join' for this functionality\n");
136 local_flags |= LOCAL_SET_NO_PASSWORD;
137 local_flags &= ~LOCAL_SET_PASSWORD;
138 SAFE_FREE(new_passwd);
139 new_passwd = smb_xstrdup("NO PASSWORD");
142 remote_machine = optarg;
145 set_line_buffering(stdin);
146 set_line_buffering(stdout);
147 set_line_buffering(stderr);
148 stdin_passwd_get = True;
151 local_flags |= LOCAL_SET_LDAP_ADMIN_PW;
152 fstrcpy(ldap_secret, optarg);
155 lp_set_cmdline("name resolve order", optarg);
158 lp_set_cmdline("log level", optarg);
162 fstrcpy(user_name, optarg);
165 local_flags |= LOCAL_SET_LDAP_ADMIN_PW;
181 fstrcpy(user_name, "");
184 if (!(local_flags & LOCAL_AM_ROOT)) {
190 fstrcpy(user_name, argv[0]);
198 if (!lp_load_global(configfile)) {
199 fprintf(stderr, "Can't load %s - run testparm to debug it\n",
207 /*************************************************************
208 Utility function to prompt for new password.
209 *************************************************************/
210 static char *prompt_for_new_password(bool stdin_get)
217 p = get_pass("New SMB password:", stdin_get);
225 p = get_pass("Retype new SMB password:", stdin_get);
230 if (strcmp(p, new_pw)) {
231 fprintf(stderr, "Mismatch - password unchanged.\n");
241 /*************************************************************
242 Change a password either locally or remotely.
243 *************************************************************/
245 static NTSTATUS password_change(const char *remote_mach, char *username,
246 char *old_passwd, char *new_pw,
250 char *err_str = NULL;
251 char *msg_str = NULL;
253 if (remote_mach != NULL) {
254 if (local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER|
255 LOCAL_DISABLE_USER|LOCAL_ENABLE_USER|
256 LOCAL_TRUST_ACCOUNT|LOCAL_SET_NO_PASSWORD)) {
257 /* these things can't be done remotely yet */
258 fprintf(stderr, "Invalid remote operation!\n");
259 return NT_STATUS_UNSUCCESSFUL;
261 ret = remote_password_change(remote_mach, username,
262 old_passwd, new_pw, &err_str);
264 ret = local_password_change(username, local_flags, new_pw,
269 printf("%s", msg_str);
272 fprintf(stderr, "%s", err_str);
274 if (!NT_STATUS_IS_OK(ret) && !err_str) {
275 fprintf(stderr, "Failed to change password!\n");
283 /*******************************************************************
284 Store the LDAP admin password in secrets.tdb
285 ******************************************************************/
286 static bool store_ldap_admin_pw (char* pw)
294 return secrets_store_ldap_pw(lp_ldap_admin_dn(talloc_tos()), pw);
298 /*************************************************************
299 Handle password changing for root.
300 *************************************************************/
302 static int process_root(int local_flags)
306 char *old_passwd = NULL;
308 if (local_flags & LOCAL_SET_LDAP_ADMIN_PW) {
309 char *ldap_admin_dn = lp_ldap_admin_dn(talloc_tos());
310 if ( ! *ldap_admin_dn ) {
311 DEBUG(0,("ERROR: 'ldap admin dn' not defined! Please check your smb.conf\n"));
315 printf("Setting stored password for \"%s\" in secrets.tdb\n", ldap_admin_dn);
316 if ( ! *ldap_secret ) {
317 new_passwd = prompt_for_new_password(stdin_passwd_get);
318 if (new_passwd == NULL) {
319 fprintf(stderr, "Failed to read new password!\n");
322 fstrcpy(ldap_secret, new_passwd);
324 if (!store_ldap_admin_pw(ldap_secret)) {
325 DEBUG(0,("ERROR: Failed to store the ldap admin password!\n"));
330 /* Ensure passdb startup(). */
331 if(!initialize_password_db(False, NULL)) {
332 DEBUG(0, ("Failed to open passdb!\n"));
336 /* Ensure we have a SAM sid. */
337 get_global_sam_sid();
340 * Ensure both add/delete user are not set
341 * Ensure add/delete user and either remote machine or join domain are
344 if(((local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER)) == (LOCAL_ADD_USER|LOCAL_DELETE_USER)) ||
345 ((local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER)) &&
346 (remote_machine != NULL))) {
350 /* Only load interfaces if we are doing network operations. */
352 if (remote_machine) {
356 if (!user_name[0] && (pwd = getpwuid_alloc(talloc_tos(), geteuid()))) {
357 fstrcpy(user_name, pwd->pw_name);
362 fprintf(stderr,"You must specify a username\n");
366 if (local_flags & LOCAL_TRUST_ACCOUNT) {
367 /* add the $ automatically */
371 * Remove any trailing '$' before we
372 * generate the initial machine password.
375 if (user_name[strlen(user_name)-1] == '$') {
376 user_name[strlen(user_name)-1] = 0;
379 if (local_flags & LOCAL_ADD_USER) {
380 SAFE_FREE(new_passwd);
381 new_passwd = smb_xstrdup(user_name);
382 if (!strlower_m(new_passwd)) {
383 fprintf(stderr, "strlower_m %s failed\n",
390 * Now ensure the username ends in '$' for
394 slprintf(buf, sizeof(buf)-1, "%s$", user_name);
395 strlcpy(user_name, buf, sizeof(user_name));
396 } else if (local_flags & LOCAL_INTERDOM_ACCOUNT) {
399 if ((local_flags & LOCAL_ADD_USER) && (new_passwd == NULL)) {
401 * Prompt for trusting domain's account password
403 new_passwd = prompt_for_new_password(stdin_passwd_get);
405 fprintf(stderr, "Unable to get newpassword.\n");
410 /* prepare uppercased and '$' terminated username */
411 slprintf(buf, sizeof(buf) - 1, "%s$", user_name);
412 strlcpy(user_name, buf, sizeof(user_name));
416 if (remote_machine != NULL) {
417 old_passwd = get_pass("Old SMB password:",stdin_passwd_get);
419 fprintf(stderr, "Unable to get old password.\n");
424 if (!(local_flags & LOCAL_SET_PASSWORD)) {
427 * If we are trying to enable a user, first we need to find out
428 * if they are using a modern version of the smbpasswd file that
429 * disables a user by just writing a flag into the file. If so
430 * then we can re-enable a user without prompting for a new
431 * password. If not (ie. they have a no stored password in the
432 * smbpasswd file) then we need to prompt for a new password.
435 if(local_flags & LOCAL_ENABLE_USER) {
436 struct samu *sampass = NULL;
438 sampass = samu_new( NULL );
440 fprintf(stderr, "talloc fail for struct samu.\n");
443 if (!pdb_getsampwnam(sampass, user_name)) {
444 fprintf(stderr, "Failed to find user %s in passdb backend.\n",
449 if(pdb_get_nt_passwd(sampass) == NULL) {
450 local_flags |= LOCAL_SET_PASSWORD;
452 TALLOC_FREE(sampass);
456 if((local_flags & LOCAL_SET_PASSWORD) && (new_passwd == NULL)) {
458 new_passwd = prompt_for_new_password(stdin_passwd_get);
460 fprintf(stderr, "Unable to get new password.\n");
466 if (!NT_STATUS_IS_OK(password_change(remote_machine, user_name,
467 old_passwd, new_passwd,
474 printf("Password changed for user %s on %s.\n", user_name, remote_machine );
475 } else if(!(local_flags & (LOCAL_ADD_USER|LOCAL_DISABLE_USER|LOCAL_ENABLE_USER|LOCAL_DELETE_USER|LOCAL_SET_NO_PASSWORD|LOCAL_SET_PASSWORD))) {
476 struct samu *sampass = NULL;
478 sampass = samu_new( NULL );
480 fprintf(stderr, "talloc fail for struct samu.\n");
484 if (!pdb_getsampwnam(sampass, user_name)) {
485 fprintf(stderr, "Failed to find user %s in passdb backend.\n",
490 printf("Password changed for user %s.", user_name );
491 if(pdb_get_acct_ctrl(sampass)&ACB_DISABLED) {
492 printf(" User has disabled flag set.");
494 if(pdb_get_acct_ctrl(sampass) & ACB_PWNOTREQ) {
495 printf(" User has no password flag set.");
498 TALLOC_FREE(sampass);
502 SAFE_FREE(old_passwd);
503 SAFE_FREE(new_passwd);
508 /*************************************************************
509 Handle password changing for non-root.
510 *************************************************************/
512 static int process_nonroot(int local_flags)
514 struct passwd *pwd = NULL;
519 if (local_flags & ~(LOCAL_AM_ROOT | LOCAL_SET_PASSWORD)) {
520 /* Extra flags that we can't honor non-root */
525 pwd = getpwuid_alloc(talloc_tos(), getuid());
527 fstrcpy(user_name,pwd->pw_name);
530 fprintf(stderr, "smbpasswd: cannot lookup user name for uid %u\n", (unsigned int)getuid());
536 * A non-root user is always setting a password
537 * via a remote machine (even if that machine is
541 load_interfaces(); /* Delayed from main() */
543 if (remote_machine == NULL) {
544 remote_machine = "127.0.0.1";
547 if (remote_machine != NULL) {
548 old_pw = get_pass("Old SMB password:",stdin_passwd_get);
549 if (old_pw == NULL) {
550 fprintf(stderr, "Unable to get old password.\n");
556 new_pw = prompt_for_new_password(stdin_passwd_get);
559 new_pw = smb_xstrdup(new_passwd);
562 fprintf(stderr, "Unable to get new password.\n");
566 if (!NT_STATUS_IS_OK(password_change(remote_machine, user_name, old_pw,
572 printf("Password changed for user %s\n", user_name);
583 /*********************************************************
585 **********************************************************/
586 int main(int argc, char **argv)
588 TALLOC_CTX *frame = talloc_stackframe();
592 #if defined(HAVE_SET_AUTH_PARAMETERS)
593 set_auth_parameters(argc, argv);
594 #endif /* HAVE_SET_AUTH_PARAMETERS */
597 local_flags = LOCAL_AM_ROOT;
602 local_flags = process_options(argc, argv, local_flags);
604 setup_logging("smbpasswd", DEBUG_STDERR);
607 * Set the machine NETBIOS name if not already
608 * set from the config file.
614 /* Check the effective uid - make sure we are not setuid */
615 if (is_setuid_root()) {
616 fprintf(stderr, "smbpasswd must *NOT* be setuid root.\n");
620 if (local_flags & LOCAL_AM_ROOT) {
627 ret = process_root(local_flags);
629 ret = process_nonroot(local_flags);