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_pass
= False
, got_username
= False
;
33 static BOOL stdin_passwd_get
= False
;
34 static fstring user_name
, user_password
;
35 static char *new_passwd
= NULL
;
36 static const char *remote_machine
= NULL
;
38 static fstring ldap_secret
;
40 /*****************************************************************************
42 ****************************************************************************/
44 void become_root( void )
49 void unbecome_root( void )
55 /*********************************************************
56 Print command usage on stderr and die.
57 **********************************************************/
58 static void usage(void)
60 printf("When run by root:\n");
61 printf(" smbpasswd [options] [username] [password]\n");
62 printf("otherwise:\n");
63 printf(" smbpasswd [options] [password]\n\n");
66 printf(" -L local mode (must be first option)\n");
67 printf(" -h print this usage message\n");
68 printf(" -s use stdin for password prompt\n");
69 printf(" -c smb.conf file Use the given path to the smb.conf file\n");
70 printf(" -D LEVEL debug level\n");
71 printf(" -r MACHINE remote machine\n");
72 printf(" -U USER remote username\n");
74 printf("extra options when run by root or in local mode:\n");
75 printf(" -a add user\n");
76 printf(" -d disable user\n");
77 printf(" -e enable user\n");
78 printf(" -i interdomain trust account\n");
79 printf(" -m machine trust account\n");
80 printf(" -n set no password\n");
81 printf(" -w ldap admin password\n");
82 printf(" -x delete user\n");
83 printf(" -R ORDER name resolve order\n");
88 static void set_line_buffering(FILE *f
)
90 setvbuf(f
, NULL
, _IOLBF
, 0);
93 /*******************************************************************
94 Process command line options
95 ******************************************************************/
96 static int process_options(int argc
, char **argv
, int local_flags
)
100 pstrcpy(configfile
, dyn_CONFIGFILE
);
102 local_flags
|= LOCAL_SET_PASSWORD
;
104 ZERO_STRUCT(user_name
);
105 ZERO_STRUCT(user_password
);
109 while ((ch
= getopt(argc
, argv
, "c:axdehminjr:sw:R:D:U:L")) != EOF
) {
112 local_flags
|= LOCAL_AM_ROOT
;
115 pstrcpy(configfile
,optarg
);
118 local_flags
|= LOCAL_ADD_USER
;
121 local_flags
|= LOCAL_DELETE_USER
;
122 local_flags
&= ~LOCAL_SET_PASSWORD
;
125 local_flags
|= LOCAL_DISABLE_USER
;
126 local_flags
&= ~LOCAL_SET_PASSWORD
;
129 local_flags
|= LOCAL_ENABLE_USER
;
130 local_flags
&= ~LOCAL_SET_PASSWORD
;
133 local_flags
|= LOCAL_TRUST_ACCOUNT
;
136 local_flags
|= LOCAL_INTERDOM_ACCOUNT
;
139 d_printf("See 'net join' for this functionality\n");
143 local_flags
|= LOCAL_SET_NO_PASSWORD
;
144 local_flags
&= ~LOCAL_SET_PASSWORD
;
145 new_passwd
= smb_xstrdup("NO PASSWORD");
148 remote_machine
= optarg
;
151 set_line_buffering(stdin
);
152 set_line_buffering(stdout
);
153 set_line_buffering(stderr
);
154 stdin_passwd_get
= True
;
157 local_flags
|= LOCAL_SET_LDAP_ADMIN_PW
;
158 fstrcpy(ldap_secret
, optarg
);
161 lp_set_name_resolve_order(optarg
);
164 DEBUGLEVEL
= atoi(optarg
);
170 fstrcpy(user_name
, optarg
);
172 if ((lp
= strchr(user_name
, '%'))) {
174 fstrcpy(user_password
, lp
+ 1);
176 memset(strchr_m(optarg
, '%') + 1, 'X',
177 strlen(user_password
));
194 fstrcpy(user_name
, "");
197 if (!(local_flags
& LOCAL_AM_ROOT
)) {
198 new_passwd
= argv
[0];
203 fstrcpy(user_name
, argv
[0]);
208 if (!(local_flags
& LOCAL_AM_ROOT
) || got_username
|| got_pass
) {
212 fstrcpy(user_name
, argv
[0]);
213 new_passwd
= smb_xstrdup(argv
[1]);
219 if (!lp_load(configfile
,True
,False
,False
)) {
220 fprintf(stderr
, "Can't load %s - run testparm to debug it\n",
228 /*************************************************************
229 Utility function to prompt for passwords from stdin. Each
230 password entered must end with a newline.
231 *************************************************************/
232 static char *stdin_new_passwd(void)
234 static fstring new_pw
;
240 * if no error is reported from fgets() and string at least contains
241 * the newline that ends the password, then replace the newline with
244 if ( fgets(new_pw
, sizeof(new_pw
), stdin
) != NULL
) {
245 if ((len
= strlen(new_pw
)) > 0) {
246 if(new_pw
[len
-1] == '\n')
254 /*************************************************************
255 Utility function to get passwords via tty or stdin
256 Used if the '-s' option is set to silently get passwords
258 *************************************************************/
259 static char *get_pass( const char *prompt
, BOOL stdin_get
)
263 p
= stdin_new_passwd();
267 return smb_xstrdup(p
);
270 /*************************************************************
271 Utility function to prompt for new password.
272 *************************************************************/
273 static char *prompt_for_new_password(BOOL stdin_get
)
280 p
= get_pass("New SMB password:", stdin_get
);
285 p
= get_pass("Retype new SMB password:", stdin_get
);
287 if (strcmp(p
, new_pw
)) {
288 fprintf(stderr
, "Mismatch - password unchanged.\n");
298 /*************************************************************
299 Change a password either locally or remotely.
300 *************************************************************/
302 static BOOL
password_change(const char *remote_mach
, char *username
,
303 char *old_passwd
, char *new_pw
, int local_flags
)
309 if (remote_mach
!= NULL
) {
310 if (local_flags
& (LOCAL_ADD_USER
|LOCAL_DELETE_USER
|LOCAL_DISABLE_USER
|LOCAL_ENABLE_USER
|
311 LOCAL_TRUST_ACCOUNT
|LOCAL_SET_NO_PASSWORD
)) {
312 /* these things can't be done remotely yet */
315 ret
= remote_password_change(remote_mach
, username
,
316 old_passwd
, new_pw
, err_str
, sizeof(err_str
));
318 fprintf(stderr
, err_str
);
322 ret
= local_password_change(username
, local_flags
, new_pw
,
323 err_str
, sizeof(err_str
), msg_str
, sizeof(msg_str
));
328 fprintf(stderr
, err_str
);
333 /*******************************************************************
334 Store the LDAP admin password in secrets.tdb
335 ******************************************************************/
336 static BOOL
store_ldap_admin_pw (char* pw
)
344 return secrets_store_ldap_pw(lp_ldap_admin_dn(), pw
);
348 /*************************************************************
349 Handle password changing for root.
350 *************************************************************/
352 static int process_root(int local_flags
)
356 char *old_passwd
= NULL
;
358 if (local_flags
& LOCAL_SET_LDAP_ADMIN_PW
)
360 printf("Setting stored password for \"%s\" in secrets.tdb\n",
362 if (!store_ldap_admin_pw(ldap_secret
))
363 DEBUG(0,("ERROR: Failed to store the ldap admin password!\n"));
368 * Ensure both add/delete user are not set
369 * Ensure add/delete user and either remote machine or join domain are
372 if(((local_flags
& (LOCAL_ADD_USER
|LOCAL_DELETE_USER
)) == (LOCAL_ADD_USER
|LOCAL_DELETE_USER
)) ||
373 ((local_flags
& (LOCAL_ADD_USER
|LOCAL_DELETE_USER
)) &&
374 (remote_machine
!= NULL
))) {
378 /* Only load interfaces if we are doing network operations. */
380 if (remote_machine
) {
384 if (!user_name
[0] && (pwd
= getpwuid_alloc(geteuid()))) {
385 fstrcpy(user_name
, pwd
->pw_name
);
390 fprintf(stderr
,"You must specify a username\n");
394 if (local_flags
& LOCAL_TRUST_ACCOUNT
) {
395 /* add the $ automatically */
399 * Remove any trailing '$' before we
400 * generate the initial machine password.
403 if (user_name
[strlen(user_name
)-1] == '$') {
404 user_name
[strlen(user_name
)-1] = 0;
407 if (local_flags
& LOCAL_ADD_USER
) {
408 SAFE_FREE(new_passwd
);
409 new_passwd
= smb_xstrdup(user_name
);
410 strlower_m(new_passwd
);
414 * Now ensure the username ends in '$' for
418 slprintf(buf
, sizeof(buf
)-1, "%s$", user_name
);
419 fstrcpy(user_name
, buf
);
420 } else if (local_flags
& LOCAL_INTERDOM_ACCOUNT
) {
423 if (local_flags
& LOCAL_ADD_USER
& !new_passwd
) {
425 * Prompt for trusting domain's account password
427 new_passwd
= prompt_for_new_password(stdin_passwd_get
);
429 fprintf(stderr
, "Unable to get newpassword.\n");
434 /* prepare uppercased and '$' terminated username */
435 slprintf(buf
, sizeof(buf
) - 1, "%s$", user_name
);
436 fstrcpy(user_name
, buf
);
440 if (remote_machine
!= NULL
) {
441 old_passwd
= get_pass("Old SMB password:",stdin_passwd_get
);
444 if (!(local_flags
& LOCAL_SET_PASSWORD
)) {
447 * If we are trying to enable a user, first we need to find out
448 * if they are using a modern version of the smbpasswd file that
449 * disables a user by just writing a flag into the file. If so
450 * then we can re-enable a user without prompting for a new
451 * password. If not (ie. they have a no stored password in the
452 * smbpasswd file) then we need to prompt for a new password.
455 if(local_flags
& LOCAL_ENABLE_USER
) {
456 SAM_ACCOUNT
*sampass
= NULL
;
459 pdb_init_sam(&sampass
);
460 ret
= pdb_getsampwnam(sampass
, user_name
);
461 if((sampass
!= False
) && (pdb_get_lanman_passwd(sampass
) == NULL
)) {
462 local_flags
|= LOCAL_SET_PASSWORD
;
464 pdb_free_sam(&sampass
);
468 if(local_flags
& LOCAL_SET_PASSWORD
& !new_passwd
) {
469 new_passwd
= prompt_for_new_password(stdin_passwd_get
);
472 fprintf(stderr
, "Unable to get new password.\n");
478 if (!password_change(remote_machine
, user_name
, old_passwd
, new_passwd
, local_flags
)) {
479 fprintf(stderr
,"Failed to modify password entry for user %s\n", user_name
);
485 printf("Password changed for user %s on %s.\n", user_name
, remote_machine
);
486 } else if(!(local_flags
& (LOCAL_ADD_USER
|LOCAL_DISABLE_USER
|LOCAL_ENABLE_USER
|LOCAL_DELETE_USER
|LOCAL_SET_NO_PASSWORD
|LOCAL_SET_PASSWORD
))) {
487 SAM_ACCOUNT
*sampass
= NULL
;
490 pdb_init_sam(&sampass
);
491 ret
= pdb_getsampwnam(sampass
, user_name
);
493 printf("Password changed for user %s.", user_name
);
494 if( (ret
!= False
) && (pdb_get_acct_ctrl(sampass
)&ACB_DISABLED
) )
495 printf(" User has disabled flag set.");
496 if((ret
!= False
) && (pdb_get_acct_ctrl(sampass
) & ACB_PWNOTREQ
) )
497 printf(" User has no password flag set.");
499 pdb_free_sam(&sampass
);
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(getuid());
527 fstrcpy(user_name
,pwd
->pw_name
);
530 fprintf(stderr
, "smbpasswd: you don't exist - go away\n");
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
);
552 new_pw
= prompt_for_new_password(stdin_passwd_get
);
555 new_pw
= smb_xstrdup(new_passwd
);
558 fprintf(stderr
, "Unable to get new password.\n");
562 if (!password_change(remote_machine
, user_name
, old_pw
, new_pw
, 0)) {
563 fprintf(stderr
,"Failed to change password for %s\n", user_name
);
568 printf("Password changed for user %s\n", user_name
);
579 /*********************************************************
581 **********************************************************/
582 int main(int argc
, char **argv
)
586 AllowDebugChange
= False
;
588 #if defined(HAVE_SET_AUTH_PARAMETERS)
589 set_auth_parameters(argc
, argv
);
590 #endif /* HAVE_SET_AUTH_PARAMETERS */
593 local_flags
= LOCAL_AM_ROOT
;
596 local_flags
= process_options(argc
, argv
, local_flags
);
598 setup_logging("smbpasswd", True
);
601 * Set the machine NETBIOS name if not already
602 * set from the config file.
608 /* Check the effective uid - make sure we are not setuid */
609 if (is_setuid_root()) {
610 fprintf(stderr
, "smbpasswd must *NOT* be setuid root.\n");
614 if (local_flags
& LOCAL_AM_ROOT
) {
616 return process_root(local_flags
);
619 return process_nonroot(local_flags
);