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 got_pass
= False
, got_username
= False
;
34 static BOOL stdin_passwd_get
= False
;
35 static fstring user_name
, user_password
;
36 static char *new_passwd
= NULL
;
37 static char *remote_machine
= NULL
;
39 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] [password]\n");
48 printf("otherwise:\n");
49 printf(" smbpasswd [options] [password]\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 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 ******************************************************************/
82 static int process_options(int argc
, char **argv
, int local_flags
)
86 pstrcpy(configfile
, dyn_CONFIGFILE
);
88 local_flags
|= LOCAL_SET_PASSWORD
;
90 ZERO_STRUCT(user_name
);
91 ZERO_STRUCT(user_password
);
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 rpc 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
);
156 fstrcpy(user_name
, optarg
);
158 if ((lp
= strchr(user_name
, '%'))) {
160 fstrcpy(user_password
, lp
+ 1);
162 memset(strchr_m(optarg
, '%') + 1, 'X',
163 strlen(user_password
));
180 fstrcpy(user_name
, "");
183 if (!(local_flags
& LOCAL_AM_ROOT
)) {
184 new_passwd
= argv
[0];
189 fstrcpy(user_name
, argv
[0]);
194 if (!(local_flags
& LOCAL_AM_ROOT
) || got_username
|| got_pass
) {
198 fstrcpy(user_name
, argv
[0]);
199 new_passwd
= smb_xstrdup(argv
[1]);
205 if (!lp_load(configfile
,True
,False
,False
)) {
206 fprintf(stderr
, "Can't load %s - run testparm to debug it\n",
214 /*************************************************************
215 Utility function to prompt for passwords from stdin. Each
216 password entered must end with a newline.
217 *************************************************************/
218 static char *stdin_new_passwd(void)
220 static fstring new_passwd
;
223 ZERO_ARRAY(new_passwd
);
226 * if no error is reported from fgets() and string at least contains
227 * the newline that ends the password, then replace the newline with
230 if ( fgets(new_passwd
, sizeof(new_passwd
), stdin
) != NULL
) {
231 if ((len
= strlen(new_passwd
)) > 0) {
232 if(new_passwd
[len
-1] == '\n')
233 new_passwd
[len
- 1] = 0;
240 /*************************************************************
241 Utility function to get passwords via tty or stdin
242 Used if the '-s' option is set to silently get passwords
244 *************************************************************/
245 static char *get_pass( char *prompt
, BOOL stdin_get
)
249 p
= stdin_new_passwd();
253 return smb_xstrdup(p
);
256 /*************************************************************
257 Utility function to prompt for new password.
258 *************************************************************/
259 static char *prompt_for_new_password(BOOL stdin_get
)
264 ZERO_ARRAY(new_passwd
);
266 p
= get_pass("New SMB password:", stdin_get
);
268 fstrcpy(new_passwd
, p
);
271 p
= get_pass("Retype new SMB password:", stdin_get
);
273 if (strcmp(p
, new_passwd
)) {
274 fprintf(stderr
, "Mismatch - password unchanged.\n");
275 ZERO_ARRAY(new_passwd
);
284 /*************************************************************
285 Change a password either locally or remotely.
286 *************************************************************/
288 static BOOL
password_change(const char *remote_machine
, char *user_name
,
289 char *old_passwd
, char *new_passwd
, int local_flags
)
295 if (remote_machine
!= NULL
) {
296 if (local_flags
& (LOCAL_ADD_USER
|LOCAL_DELETE_USER
|LOCAL_DISABLE_USER
|LOCAL_ENABLE_USER
|
297 LOCAL_TRUST_ACCOUNT
|LOCAL_SET_NO_PASSWORD
)) {
298 /* these things can't be done remotely yet */
301 ret
= remote_password_change(remote_machine
, user_name
,
302 old_passwd
, new_passwd
, err_str
, sizeof(err_str
));
304 fprintf(stderr
, err_str
);
308 ret
= local_password_change(user_name
, local_flags
, new_passwd
,
309 err_str
, sizeof(err_str
), msg_str
, sizeof(msg_str
));
314 fprintf(stderr
, err_str
);
319 /*******************************************************************
320 Store the LDAP admin password in secrets.tdb
321 ******************************************************************/
322 static BOOL
store_ldap_admin_pw (char* pw
)
330 return secrets_store_ldap_pw(lp_ldap_admin_dn(), pw
);
334 /*************************************************************
335 Handle password changing for root.
336 *************************************************************/
338 static int process_root(int local_flags
)
342 char *old_passwd
= NULL
;
344 if (local_flags
& LOCAL_SET_LDAP_ADMIN_PW
)
346 printf("Setting stored password for \"%s\" in secrets.tdb\n",
348 if (!store_ldap_admin_pw(ldap_secret
))
349 DEBUG(0,("ERROR: Failed to store the ldap admin password!\n"));
354 * Ensure both add/delete user are not set
355 * Ensure add/delete user and either remote machine or join domain are
358 if(((local_flags
& (LOCAL_ADD_USER
|LOCAL_DELETE_USER
)) == (LOCAL_ADD_USER
|LOCAL_DELETE_USER
)) ||
359 ((local_flags
& (LOCAL_ADD_USER
|LOCAL_DELETE_USER
)) &&
360 (remote_machine
!= NULL
))) {
364 /* Only load interfaces if we are doing network operations. */
366 if (remote_machine
) {
370 if (!user_name
[0] && (pwd
= getpwuid_alloc(geteuid()))) {
371 fstrcpy(user_name
, pwd
->pw_name
);
376 fprintf(stderr
,"You must specify a username\n");
380 if (local_flags
& LOCAL_TRUST_ACCOUNT
) {
381 /* add the $ automatically */
385 * Remove any trailing '$' before we
386 * generate the initial machine password.
389 if (user_name
[strlen(user_name
)-1] == '$') {
390 user_name
[strlen(user_name
)-1] = 0;
393 if (local_flags
& LOCAL_ADD_USER
) {
394 SAFE_FREE(new_passwd
);
395 new_passwd
= smb_xstrdup(user_name
);
396 strlower(new_passwd
);
400 * Now ensure the username ends in '$' for
404 slprintf(buf
, sizeof(buf
)-1, "%s$", user_name
);
405 fstrcpy(user_name
, buf
);
406 } else if (local_flags
& LOCAL_INTERDOM_ACCOUNT
) {
409 if (local_flags
& LOCAL_ADD_USER
) {
411 * Prompt for trusting domain's account password
413 new_passwd
= prompt_for_new_password(stdin_passwd_get
);
415 fprintf(stderr
, "Unable to get newpassword.\n");
420 /* prepare uppercased and '$' terminated username */
421 slprintf(buf
, sizeof(buf
) - 1, "%s$", user_name
);
422 fstrcpy(user_name
, buf
);
426 if (remote_machine
!= NULL
) {
427 old_passwd
= get_pass("Old SMB password:",stdin_passwd_get
);
430 if (!(local_flags
& LOCAL_SET_PASSWORD
)) {
433 * If we are trying to enable a user, first we need to find out
434 * if they are using a modern version of the smbpasswd file that
435 * disables a user by just writing a flag into the file. If so
436 * then we can re-enable a user without prompting for a new
437 * password. If not (ie. they have a no stored password in the
438 * smbpasswd file) then we need to prompt for a new password.
441 if(local_flags
& LOCAL_ENABLE_USER
) {
442 SAM_ACCOUNT
*sampass
= NULL
;
445 pdb_init_sam(&sampass
);
446 ret
= pdb_getsampwnam(sampass
, user_name
);
447 if((sampass
!= False
) && (pdb_get_lanman_passwd(sampass
) == NULL
)) {
448 local_flags
|= LOCAL_SET_PASSWORD
;
450 pdb_free_sam(&sampass
);
454 if(local_flags
& LOCAL_SET_PASSWORD
) {
455 new_passwd
= prompt_for_new_password(stdin_passwd_get
);
458 fprintf(stderr
, "Unable to get new password.\n");
464 if (!password_change(remote_machine
, user_name
, old_passwd
, new_passwd
, local_flags
)) {
465 fprintf(stderr
,"Failed to modify password entry for user %s\n", user_name
);
471 printf("Password changed for user %s on %s.\n", user_name
, remote_machine
);
472 } else if(!(local_flags
& (LOCAL_ADD_USER
|LOCAL_DISABLE_USER
|LOCAL_ENABLE_USER
|LOCAL_DELETE_USER
|LOCAL_SET_NO_PASSWORD
|LOCAL_SET_PASSWORD
))) {
473 SAM_ACCOUNT
*sampass
= NULL
;
476 pdb_init_sam(&sampass
);
477 ret
= pdb_getsampwnam(sampass
, user_name
);
479 printf("Password changed for user %s.", user_name
);
480 if( (ret
!= False
) && (pdb_get_acct_ctrl(sampass
)&ACB_DISABLED
) )
481 printf(" User has disabled flag set.");
482 if((ret
!= False
) && (pdb_get_acct_ctrl(sampass
) & ACB_PWNOTREQ
) )
483 printf(" User has no password flag set.");
485 pdb_free_sam(&sampass
);
489 SAFE_FREE(new_passwd
);
494 /*************************************************************
495 Handle password changing for non-root.
496 *************************************************************/
498 static int process_nonroot(int local_flags
)
500 struct passwd
*pwd
= NULL
;
502 char *old_passwd
= NULL
;
504 if (local_flags
& ~(LOCAL_AM_ROOT
| LOCAL_SET_PASSWORD
)) {
505 /* Extra flags that we can't honor non-root */
510 pwd
= getpwuid_alloc(getuid());
512 fstrcpy(user_name
,pwd
->pw_name
);
515 fprintf(stderr
, "smbpasswd: you don't exist - go away\n");
521 * A non-root user is always setting a password
522 * via a remote machine (even if that machine is
526 load_interfaces(); /* Delayed from main() */
528 if (remote_machine
== NULL
) {
529 remote_machine
= "127.0.0.1";
532 if (remote_machine
!= NULL
) {
533 old_passwd
= get_pass("Old SMB password:",stdin_passwd_get
);
537 new_passwd
= prompt_for_new_password(stdin_passwd_get
);
541 fprintf(stderr
, "Unable to get new password.\n");
545 if (!password_change(remote_machine
, user_name
, old_passwd
, new_passwd
, 0)) {
546 fprintf(stderr
,"Failed to change password for %s\n", user_name
);
551 printf("Password changed for user %s\n", user_name
);
554 SAFE_FREE(old_passwd
);
555 SAFE_FREE(new_passwd
);
562 /*********************************************************
564 **********************************************************/
565 int main(int argc
, char **argv
)
569 AllowDebugChange
= False
;
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
;
579 local_flags
= process_options(argc
, argv
, local_flags
);
581 setup_logging("smbpasswd", True
);
584 * Set the machine NETBIOS name if not already
585 * set from the config file.
588 if (!*global_myname
) {
590 fstrcpy(global_myname
, myhostname());
591 p
= strchr_m(global_myname
, '.' );
594 strupper(global_myname
);
596 /* Check the effective uid - make sure we are not setuid */
597 if (is_setuid_root()) {
598 fprintf(stderr
, "smbpasswd must *NOT* be setuid root.\n");
602 if (local_flags
& LOCAL_AM_ROOT
) {
604 return process_root(local_flags
);
607 return process_nonroot(local_flags
);