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 pstring global_myname;
23 extern BOOL AllowDebugChange;
26 * Next two lines needed for SunOS and don't
27 * hurt anything else...
32 /** forced running in root-mode **/
33 static BOOL local_mode;
36 * Print command usage on stderr and die.
38 static void usage(void)
40 printf("When run by root:\n");
41 printf(" smbpasswd [options] [username] [password]\n");
42 printf("otherwise:\n");
43 printf(" smbpasswd [options] [password]\n\n");
46 printf(" -s use stdin for password prompt\n");
47 printf(" -D LEVEL debug level\n");
48 printf(" -U USER remote username\n");
49 printf(" -r MACHINE remote machine\n");
51 printf("extra options when run by root or in local mode:\n");
52 printf(" -L local mode (must be first option)\n");
53 printf(" -R ORDER name resolve order\n");
54 printf(" -a add user\n");
55 printf(" -x delete user\n");
56 printf(" -d disable user\n");
57 printf(" -e enable user\n");
58 printf(" -n set no password\n");
59 printf(" -m machine trust account\n");
60 printf(" -i interdomain trust account\n");
62 printf(" -w ldap admin password\n");
68 static void set_line_buffering(FILE *f)
70 setvbuf(f, NULL, _IOLBF, 0);
73 /*************************************************************
74 Utility function to prompt for passwords from stdin. Each
75 password entered must end with a newline.
76 *************************************************************/
77 static char *stdin_new_passwd(void)
79 static fstring new_passwd;
82 ZERO_ARRAY(new_passwd);
85 * if no error is reported from fgets() and string at least contains
86 * the newline that ends the password, then replace the newline with
89 if ( fgets(new_passwd, sizeof(new_passwd), stdin) != NULL) {
90 if ((len = strlen(new_passwd)) > 0) {
91 if(new_passwd[len-1] == '\n')
92 new_passwd[len - 1] = 0;
99 /*************************************************************
100 Utility function to get passwords via tty or stdin
101 Used if the '-s' option is set to silently get passwords
103 *************************************************************/
104 static char *get_pass( char *prompt, BOOL stdin_get)
108 p = stdin_new_passwd();
112 return smb_xstrdup(p);
115 /*************************************************************
116 Utility function to prompt for new password.
117 *************************************************************/
118 static char *prompt_for_new_password(BOOL stdin_get)
123 ZERO_ARRAY(new_passwd);
125 p = get_pass("New SMB password:", stdin_get);
127 fstrcpy(new_passwd, p);
130 p = get_pass("Retype new SMB password:", stdin_get);
132 if (strcmp(p, new_passwd)) {
133 fprintf(stderr, "Mismatch - password unchanged.\n");
134 ZERO_ARRAY(new_passwd);
143 /*************************************************************
144 Change a password either locally or remotely.
145 *************************************************************/
147 static BOOL password_change(const char *remote_machine, char *user_name,
148 char *old_passwd, char *new_passwd, int local_flags)
154 if (remote_machine != NULL) {
155 if (local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER|LOCAL_DISABLE_USER|LOCAL_ENABLE_USER|
156 LOCAL_TRUST_ACCOUNT|LOCAL_SET_NO_PASSWORD)) {
157 /* these things can't be done remotely yet */
160 ret = remote_password_change(remote_machine, user_name,
161 old_passwd, new_passwd, err_str, sizeof(err_str));
163 fprintf(stderr, err_str);
167 ret = local_password_change(user_name, local_flags, new_passwd,
168 err_str, sizeof(err_str), msg_str, sizeof(msg_str));
173 fprintf(stderr, err_str);
179 /*******************************************************************
180 Store the LDAP admin password in secrets.tdb
181 ******************************************************************/
182 static BOOL store_ldap_admin_pw (char* pw)
190 return secrets_store_ldap_pw(lp_ldap_admin_dn(), pw);
194 /*************************************************************
195 Handle password changing for root.
196 *************************************************************/
198 static int process_root(int argc, char *argv[])
202 BOOL got_pass = False, got_username = False;
203 int local_flags = LOCAL_SET_PASSWORD;
204 BOOL stdin_passwd_get = False;
205 fstring user_name, user_password;
206 char *new_passwd = NULL;
207 char *old_passwd = NULL;
208 char *remote_machine = NULL;
213 ZERO_STRUCT(user_name);
214 ZERO_STRUCT(user_password);
218 while ((ch = getopt(argc, argv, "axdehmnijr:sw:R:D:U:L")) != EOF) {
224 local_flags |= LOCAL_ADD_USER;
227 local_flags |= LOCAL_DELETE_USER;
228 local_flags &= ~LOCAL_SET_PASSWORD;
231 local_flags |= LOCAL_DISABLE_USER;
232 local_flags &= ~LOCAL_SET_PASSWORD;
235 local_flags |= LOCAL_ENABLE_USER;
236 local_flags &= ~LOCAL_SET_PASSWORD;
239 local_flags |= LOCAL_TRUST_ACCOUNT;
242 local_flags |= LOCAL_INTERDOM_ACCOUNT;
245 d_printf("See 'net rpc join' for this functionality\n");
249 remote_machine = optarg;
252 set_line_buffering(stdin);
253 set_line_buffering(stdout);
254 set_line_buffering(stderr);
255 stdin_passwd_get = True;
259 local_flags |= LOCAL_SET_LDAP_ADMIN_PW;
260 fstrcpy(ldap_secret, optarg);
263 printf("-w not available unless configured --with-ldap\n");
267 lp_set_name_resolve_order(optarg);
270 DEBUGLEVEL = atoi(optarg);
276 fstrcpy(user_name, optarg);
278 if ((lp = strchr_m(user_name, '%'))) {
280 fstrcpy(user_password, lp + 1);
282 memset(strchr_m(optarg, '%') + 1, 'X',
283 strlen(user_password));
298 if (local_flags & LOCAL_SET_LDAP_ADMIN_PW)
300 printf("Setting stored password for \"%s\" in secrets.tdb\n",
302 if (!store_ldap_admin_pw(ldap_secret))
303 DEBUG(0,("ERROR: Failed to store the ldap admin password!\n"));
308 * Ensure both add/delete user are not set
309 * Ensure add/delete user and either remote machine or join domain are
312 if(((local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER)) == (LOCAL_ADD_USER|LOCAL_DELETE_USER)) ||
313 ((local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER)) &&
314 (remote_machine != NULL))) {
318 /* Only load interfaces if we are doing network operations. */
320 if (remote_machine) {
325 * Deal with root - can add a user, but only locally.
331 fstrcpy(user_name, "");
336 fstrcpy(user_name, argv[0]);
339 if (got_username || got_pass)
341 fstrcpy(user_name, argv[0]);
342 new_passwd = smb_xstrdup(argv[1]);
348 if (!user_name[0] && (pwd = sys_getpwuid(geteuid()))) {
349 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(new_passwd);
377 * Now ensure the username ends in '$' for
381 slprintf(buf, sizeof(buf)-1, "%s$", user_name);
382 fstrcpy(user_name, buf);
383 } else if (local_flags & LOCAL_INTERDOM_ACCOUNT) {
386 if (local_flags & LOCAL_ADD_USER) {
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");
396 slprintf(buf, sizeof(buf) - 1, "%s$", user_name);
397 fstrcpy(user_name, buf);
401 if (remote_machine != NULL) {
402 old_passwd = get_pass("Old SMB password:",stdin_passwd_get);
405 if (!(local_flags & LOCAL_SET_PASSWORD)) {
408 * If we are trying to enable a user, first we need to find out
409 * if they are using a modern version of the smbpasswd file that
410 * disables a user by just writing a flag into the file. If so
411 * then we can re-enable a user without prompting for a new
412 * password. If not (ie. they have a no stored password in the
413 * smbpasswd file) then we need to prompt for a new password.
416 if(local_flags & LOCAL_ENABLE_USER) {
417 SAM_ACCOUNT *sampass = NULL;
420 pdb_init_sam(&sampass);
421 ret = pdb_getsampwnam(sampass, user_name);
422 if((sampass != False) && (pdb_get_lanman_passwd(sampass) == NULL)) {
423 local_flags |= LOCAL_SET_PASSWORD;
425 pdb_free_sam(&sampass);
429 if(local_flags & LOCAL_SET_PASSWORD) {
430 new_passwd = prompt_for_new_password(stdin_passwd_get);
433 fprintf(stderr, "Unable to get new password.\n");
439 if (!password_change(remote_machine, user_name, old_passwd, new_passwd, local_flags)) {
440 fprintf(stderr,"Failed to modify password entry for user %s\n", user_name);
445 if(!(local_flags & (LOCAL_ADD_USER|LOCAL_DISABLE_USER|LOCAL_ENABLE_USER|LOCAL_DELETE_USER|LOCAL_SET_NO_PASSWORD|LOCAL_SET_PASSWORD))) {
446 SAM_ACCOUNT *sampass = NULL;
449 pdb_init_sam(&sampass);
450 ret = pdb_getsampwnam(sampass, user_name);
452 printf("Password changed for user %s.", user_name );
453 if( (ret != False) && (pdb_get_acct_ctrl(sampass)&ACB_DISABLED) )
454 printf(" User has disabled flag set.");
455 if((ret != False) && (pdb_get_acct_ctrl(sampass) & ACB_PWNOTREQ) )
456 printf(" User has no password flag set.");
458 pdb_free_sam(&sampass);
462 SAFE_FREE(new_passwd);
468 handle password changing for non-root
470 static int process_nonroot(int argc, char *argv[])
472 struct passwd *pwd = NULL;
474 BOOL stdin_passwd_get = False;
475 char *old_passwd = NULL;
476 char *remote_machine = NULL;
477 char *user_name = NULL;
478 char *new_passwd = NULL;
480 while ((ch = getopt(argc, argv, "hD:r:sU:")) != EOF) {
483 DEBUGLEVEL = atoi(optarg);
486 remote_machine = optarg;
489 set_line_buffering(stdin);
490 set_line_buffering(stdout);
491 set_line_buffering(stderr);
492 stdin_passwd_get = True;
510 new_passwd = argv[0];
514 pwd = sys_getpwuid(getuid());
516 user_name = smb_xstrdup(pwd->pw_name);
518 fprintf(stderr, "smbpasswd: you don't exist - go away\n");
524 * A non-root user is always setting a password
525 * via a remote machine (even if that machine is
529 load_interfaces(); /* Delayed from main() */
531 if (remote_machine == NULL) {
532 remote_machine = "127.0.0.1";
535 if (remote_machine != NULL) {
536 old_passwd = get_pass("Old SMB password:",stdin_passwd_get);
540 new_passwd = prompt_for_new_password(stdin_passwd_get);
544 fprintf(stderr, "Unable to get new password.\n");
548 if (!password_change(remote_machine, user_name, old_passwd, new_passwd, 0)) {
549 fprintf(stderr,"Failed to change password for %s\n", user_name);
554 printf("Password changed for user %s\n", user_name);
557 SAFE_FREE(old_passwd);
558 SAFE_FREE(new_passwd);
565 /*********************************************************
567 **********************************************************/
568 int main(int argc, char **argv)
570 AllowDebugChange = False;
572 #if defined(HAVE_SET_AUTH_PARAMETERS)
573 set_auth_parameters(argc, argv);
574 #endif /* HAVE_SET_AUTH_PARAMETERS */
576 setup_logging("smbpasswd", True);
578 if (!lp_load(dyn_CONFIGFILE,True,False,False)) {
579 fprintf(stderr, "Can't load %s - run testparm to debug it\n",
585 * Set the machine NETBIOS name if not already
586 * set from the config file.
589 if (!*global_myname) {
591 fstrcpy(global_myname, myhostname());
592 p = strchr_m(global_myname, '.' );
595 strupper(global_myname);
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 /* pre-check for local mode option as first option. We can't
604 do this via normal getopt as getopt can't be called
606 if (argc > 1 && strcmp(argv[1], "-L") == 0) {
610 if (local_mode || getuid() == 0) {
612 return process_root(argc, argv);
615 return process_nonroot(argc, argv);