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 BOOL AllowDebugChange
;
25 * Next two lines needed for SunOS and don't
26 * hurt anything else...
31 /* forced running in root-mode */
32 static BOOL got_username
= False
;
33 static BOOL stdin_passwd_get
= False
;
34 static fstring user_name
;
35 static char *new_passwd
= NULL
;
36 static const char *remote_machine
= NULL
;
38 static fstring ldap_secret
;
41 /*********************************************************
42 Print command usage on stderr and die.
43 **********************************************************/
44 static void usage(void)
46 printf("When run by root:\n");
47 printf(" smbpasswd [options] [username]\n");
48 printf("otherwise:\n");
49 printf(" smbpasswd [options]\n\n");
52 printf(" -L local mode (must be first option)\n");
53 printf(" -h print this usage message\n");
54 printf(" -s use stdin for password prompt\n");
55 printf(" -c smb.conf file Use the given path to the smb.conf file\n");
56 printf(" -D LEVEL debug level\n");
57 printf(" -r MACHINE remote machine\n");
58 printf(" -U USER remote username\n");
60 printf("extra options when run by root or in local mode:\n");
61 printf(" -a add user\n");
62 printf(" -d disable user\n");
63 printf(" -e enable user\n");
64 printf(" -i interdomain trust account\n");
65 printf(" -m machine trust account\n");
66 printf(" -n set no 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:L")) != 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
);
169 fstrcpy(user_name
, "");
172 if (!(local_flags
& LOCAL_AM_ROOT
)) {
178 fstrcpy(user_name
, argv
[0]);
186 if (!lp_load(configfile
,True
,False
,False
)) {
187 fprintf(stderr
, "Can't load %s - run testparm to debug it\n",
195 /*************************************************************
196 Utility function to prompt for passwords from stdin. Each
197 password entered must end with a newline.
198 *************************************************************/
199 static char *stdin_new_passwd(void)
201 static fstring new_pw
;
207 * if no error is reported from fgets() and string at least contains
208 * the newline that ends the password, then replace the newline with
211 if ( fgets(new_pw
, sizeof(new_pw
), stdin
) != NULL
) {
212 if ((len
= strlen(new_pw
)) > 0) {
213 if(new_pw
[len
-1] == '\n')
221 /*************************************************************
222 Utility function to get passwords via tty or stdin
223 Used if the '-s' option is set to silently get passwords
225 *************************************************************/
226 static char *get_pass( const char *prompt
, BOOL stdin_get
)
230 p
= stdin_new_passwd();
234 return smb_xstrdup(p
);
237 /*************************************************************
238 Utility function to prompt for new password.
239 *************************************************************/
240 static char *prompt_for_new_password(BOOL stdin_get
)
247 p
= get_pass("New SMB password:", stdin_get
);
252 p
= get_pass("Retype new SMB password:", stdin_get
);
254 if (strcmp(p
, new_pw
)) {
255 fprintf(stderr
, "Mismatch - password unchanged.\n");
265 /*************************************************************
266 Change a password either locally or remotely.
267 *************************************************************/
269 static BOOL
password_change(const char *remote_mach
, char *username
,
270 char *old_passwd
, char *new_pw
, int local_flags
)
276 if (remote_mach
!= NULL
) {
277 if (local_flags
& (LOCAL_ADD_USER
|LOCAL_DELETE_USER
|LOCAL_DISABLE_USER
|LOCAL_ENABLE_USER
|
278 LOCAL_TRUST_ACCOUNT
|LOCAL_SET_NO_PASSWORD
)) {
279 /* these things can't be done remotely yet */
282 ret
= remote_password_change(remote_mach
, username
,
283 old_passwd
, new_pw
, err_str
, sizeof(err_str
));
285 fprintf(stderr
, "%s", err_str
);
289 ret
= local_password_change(username
, local_flags
, new_pw
,
290 err_str
, sizeof(err_str
), msg_str
, sizeof(msg_str
));
293 printf("%s", msg_str
);
295 fprintf(stderr
, "%s", err_str
);
300 /*******************************************************************
301 Store the LDAP admin password in secrets.tdb
302 ******************************************************************/
303 static BOOL
store_ldap_admin_pw (char* pw
)
311 return secrets_store_ldap_pw(lp_ldap_admin_dn(), pw
);
315 /*************************************************************
316 Handle password changing for root.
317 *************************************************************/
319 static int process_root(int local_flags
)
323 char *old_passwd
= NULL
;
325 if (local_flags
& LOCAL_SET_LDAP_ADMIN_PW
) {
326 printf("Setting stored password for \"%s\" in secrets.tdb\n",
328 if (!store_ldap_admin_pw(ldap_secret
))
329 DEBUG(0,("ERROR: Failed to store the ldap admin password!\n"));
333 /* Ensure passdb startup(). */
334 if(!initialize_password_db(False
)) {
335 DEBUG(0, ("Failed to open passdb!\n"));
339 /* Ensure we have a SAM sid. */
340 get_global_sam_sid();
343 * Ensure both add/delete user are not set
344 * Ensure add/delete user and either remote machine or join domain are
347 if(((local_flags
& (LOCAL_ADD_USER
|LOCAL_DELETE_USER
)) == (LOCAL_ADD_USER
|LOCAL_DELETE_USER
)) ||
348 ((local_flags
& (LOCAL_ADD_USER
|LOCAL_DELETE_USER
)) &&
349 (remote_machine
!= NULL
))) {
353 /* Only load interfaces if we are doing network operations. */
355 if (remote_machine
) {
359 if (!user_name
[0] && (pwd
= getpwuid_alloc(geteuid()))) {
360 fstrcpy(user_name
, pwd
->pw_name
);
365 fprintf(stderr
,"You must specify a username\n");
369 if (local_flags
& LOCAL_TRUST_ACCOUNT
) {
370 /* add the $ automatically */
374 * Remove any trailing '$' before we
375 * generate the initial machine password.
378 if (user_name
[strlen(user_name
)-1] == '$') {
379 user_name
[strlen(user_name
)-1] = 0;
382 if (local_flags
& LOCAL_ADD_USER
) {
383 SAFE_FREE(new_passwd
);
384 new_passwd
= smb_xstrdup(user_name
);
385 strlower_m(new_passwd
);
389 * Now ensure the username ends in '$' for
393 slprintf(buf
, sizeof(buf
)-1, "%s$", user_name
);
394 fstrcpy(user_name
, buf
);
395 } else if (local_flags
& LOCAL_INTERDOM_ACCOUNT
) {
398 if ((local_flags
& LOCAL_ADD_USER
) && (new_passwd
== NULL
)) {
400 * Prompt for trusting domain's account password
402 new_passwd
= prompt_for_new_password(stdin_passwd_get
);
404 fprintf(stderr
, "Unable to get newpassword.\n");
409 /* prepare uppercased and '$' terminated username */
410 slprintf(buf
, sizeof(buf
) - 1, "%s$", user_name
);
411 fstrcpy(user_name
, buf
);
415 if (remote_machine
!= NULL
) {
416 old_passwd
= get_pass("Old SMB password:",stdin_passwd_get
);
419 if (!(local_flags
& LOCAL_SET_PASSWORD
)) {
422 * If we are trying to enable a user, first we need to find out
423 * if they are using a modern version of the smbpasswd file that
424 * disables a user by just writing a flag into the file. If so
425 * then we can re-enable a user without prompting for a new
426 * password. If not (ie. they have a no stored password in the
427 * smbpasswd file) then we need to prompt for a new password.
430 if(local_flags
& LOCAL_ENABLE_USER
) {
431 SAM_ACCOUNT
*sampass
= NULL
;
434 pdb_init_sam(&sampass
);
435 ret
= pdb_getsampwnam(sampass
, user_name
);
437 (pdb_get_lanman_passwd(sampass
) == NULL
)) {
438 local_flags
|= LOCAL_SET_PASSWORD
;
440 pdb_free_sam(&sampass
);
444 if((local_flags
& LOCAL_SET_PASSWORD
) && (new_passwd
== NULL
)) {
445 new_passwd
= prompt_for_new_password(stdin_passwd_get
);
448 fprintf(stderr
, "Unable to get new password.\n");
454 if (!password_change(remote_machine
, user_name
, old_passwd
, new_passwd
, local_flags
)) {
455 fprintf(stderr
,"Failed to modify password entry for user %s\n", user_name
);
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 SAM_ACCOUNT
*sampass
= NULL
;
466 pdb_init_sam(&sampass
);
467 ret
= pdb_getsampwnam(sampass
, user_name
);
469 printf("Password changed for user %s.", user_name
);
470 if( (ret
!= False
) && (pdb_get_acct_ctrl(sampass
)&ACB_DISABLED
) )
471 printf(" User has disabled flag set.");
472 if((ret
!= False
) && (pdb_get_acct_ctrl(sampass
) & ACB_PWNOTREQ
) )
473 printf(" User has no password flag set.");
475 pdb_free_sam(&sampass
);
479 SAFE_FREE(new_passwd
);
484 /*************************************************************
485 Handle password changing for non-root.
486 *************************************************************/
488 static int process_nonroot(int local_flags
)
490 struct passwd
*pwd
= NULL
;
495 if (local_flags
& ~(LOCAL_AM_ROOT
| LOCAL_SET_PASSWORD
)) {
496 /* Extra flags that we can't honor non-root */
501 pwd
= getpwuid_alloc(getuid());
503 fstrcpy(user_name
,pwd
->pw_name
);
506 fprintf(stderr
, "smbpasswd: cannot lookup user name for uid %u\n", (unsigned int)getuid());
512 * A non-root user is always setting a password
513 * via a remote machine (even if that machine is
517 load_interfaces(); /* Delayed from main() */
519 if (remote_machine
== NULL
) {
520 remote_machine
= "127.0.0.1";
523 if (remote_machine
!= NULL
) {
524 old_pw
= get_pass("Old SMB password:",stdin_passwd_get
);
528 new_pw
= prompt_for_new_password(stdin_passwd_get
);
531 new_pw
= smb_xstrdup(new_passwd
);
534 fprintf(stderr
, "Unable to get new password.\n");
538 if (!password_change(remote_machine
, user_name
, old_pw
, new_pw
, 0)) {
539 fprintf(stderr
,"Failed to change password for %s\n", user_name
);
544 printf("Password changed for user %s\n", user_name
);
555 /*********************************************************
557 **********************************************************/
558 int main(int argc
, char **argv
)
562 AllowDebugChange
= False
;
564 #if defined(HAVE_SET_AUTH_PARAMETERS)
565 set_auth_parameters(argc
, argv
);
566 #endif /* HAVE_SET_AUTH_PARAMETERS */
569 local_flags
= LOCAL_AM_ROOT
;
572 local_flags
= process_options(argc
, argv
, local_flags
);
574 setup_logging("smbpasswd", True
);
577 * Set the machine NETBIOS name if not already
578 * set from the config file.
584 /* Check the effective uid - make sure we are not setuid */
585 if (is_setuid_root()) {
586 fprintf(stderr
, "smbpasswd must *NOT* be setuid root.\n");
590 if (local_flags
& LOCAL_AM_ROOT
) {
592 return process_root(local_flags
);
595 return process_nonroot(local_flags
);