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/>. */
21 extern bool AllowDebugChange
;
24 * Next two lines needed for SunOS and don't
25 * hurt anything else...
30 /* forced running in root-mode */
31 static bool got_username
= False
;
32 static bool stdin_passwd_get
= False
;
33 static fstring user_name
;
34 static char *new_passwd
= NULL
;
35 static const char *remote_machine
= NULL
;
37 static fstring ldap_secret
;
40 /*********************************************************
41 Print command usage on stderr and die.
42 **********************************************************/
43 static void usage(void)
45 printf("When run by root:\n");
46 printf(" smbpasswd [options] [username]\n");
47 printf("otherwise:\n");
48 printf(" smbpasswd [options]\n\n");
51 printf(" -L local mode (must be first option)\n");
52 printf(" -h print this usage message\n");
53 printf(" -s use stdin for password prompt\n");
54 printf(" -c smb.conf file Use the given path to the smb.conf file\n");
55 printf(" -D LEVEL debug level\n");
56 printf(" -r MACHINE remote machine\n");
57 printf(" -U USER remote username\n");
59 printf("extra options when run by root or in local mode:\n");
60 printf(" -a add user\n");
61 printf(" -d disable user\n");
62 printf(" -e enable user\n");
63 printf(" -i interdomain trust account\n");
64 printf(" -m machine trust account\n");
65 printf(" -n set no password\n");
66 printf(" -W use stdin ldap admin 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
)
86 const char *configfile
= get_dyn_CONFIGFILE();
88 local_flags
|= LOCAL_SET_PASSWORD
;
90 ZERO_STRUCT(user_name
);
94 while ((ch
= getopt(argc
, argv
, "c:axdehminjr:sw:R:D:U:LW")) != EOF
) {
97 #if !defined(NSS_WRAPPER)
99 fprintf(stderr
, "smbpasswd -L can only be used by root.\n");
103 local_flags
|= LOCAL_AM_ROOT
;
109 local_flags
|= LOCAL_ADD_USER
;
112 local_flags
|= LOCAL_DELETE_USER
;
113 local_flags
&= ~LOCAL_SET_PASSWORD
;
116 local_flags
|= LOCAL_DISABLE_USER
;
117 local_flags
&= ~LOCAL_SET_PASSWORD
;
120 local_flags
|= LOCAL_ENABLE_USER
;
121 local_flags
&= ~LOCAL_SET_PASSWORD
;
124 local_flags
|= LOCAL_TRUST_ACCOUNT
;
127 local_flags
|= LOCAL_INTERDOM_ACCOUNT
;
130 d_printf("See 'net join' for this functionality\n");
134 local_flags
|= LOCAL_SET_NO_PASSWORD
;
135 local_flags
&= ~LOCAL_SET_PASSWORD
;
136 new_passwd
= smb_xstrdup("NO PASSWORD");
139 remote_machine
= optarg
;
142 set_line_buffering(stdin
);
143 set_line_buffering(stdout
);
144 set_line_buffering(stderr
);
145 stdin_passwd_get
= True
;
148 local_flags
|= LOCAL_SET_LDAP_ADMIN_PW
;
149 fstrcpy(ldap_secret
, optarg
);
152 lp_set_name_resolve_order(optarg
);
155 DEBUGLEVEL
= atoi(optarg
);
159 fstrcpy(user_name
, optarg
);
162 local_flags
|= LOCAL_SET_LDAP_ADMIN_PW
;
178 fstrcpy(user_name
, "");
181 if (!(local_flags
& LOCAL_AM_ROOT
)) {
187 fstrcpy(user_name
, argv
[0]);
195 if (!lp_load(configfile
,True
,False
,False
,True
)) {
196 fprintf(stderr
, "Can't load %s - run testparm to debug it\n",
204 /*************************************************************
205 Utility function to prompt for new password.
206 *************************************************************/
207 static char *prompt_for_new_password(bool stdin_get
)
214 p
= get_pass("New SMB password:", stdin_get
);
219 p
= get_pass("Retype new SMB password:", stdin_get
);
221 if (strcmp(p
, new_pw
)) {
222 fprintf(stderr
, "Mismatch - password unchanged.\n");
232 /*************************************************************
233 Change a password either locally or remotely.
234 *************************************************************/
236 static NTSTATUS
password_change(const char *remote_mach
, char *username
,
237 char *old_passwd
, char *new_pw
,
241 char *err_str
= NULL
;
242 char *msg_str
= NULL
;
244 if (remote_mach
!= NULL
) {
245 if (local_flags
& (LOCAL_ADD_USER
|LOCAL_DELETE_USER
|
246 LOCAL_DISABLE_USER
|LOCAL_ENABLE_USER
|
247 LOCAL_TRUST_ACCOUNT
|LOCAL_SET_NO_PASSWORD
)) {
248 /* these things can't be done remotely yet */
249 fprintf(stderr
, "Invalid remote operation!\n");
250 return NT_STATUS_UNSUCCESSFUL
;
252 ret
= remote_password_change(remote_mach
, username
,
253 old_passwd
, new_pw
, &err_str
);
255 ret
= local_password_change(username
, local_flags
, new_pw
,
260 printf("%s", msg_str
);
263 fprintf(stderr
, "%s", err_str
);
265 if (!NT_STATUS_IS_OK(ret
) && !err_str
) {
266 fprintf(stderr
, "Failed to change password!\n");
274 /*******************************************************************
275 Store the LDAP admin password in secrets.tdb
276 ******************************************************************/
277 static bool store_ldap_admin_pw (char* pw
)
285 return secrets_store_ldap_pw(lp_ldap_admin_dn(), pw
);
289 /*************************************************************
290 Handle password changing for root.
291 *************************************************************/
293 static int process_root(int local_flags
)
297 char *old_passwd
= NULL
;
299 if (local_flags
& LOCAL_SET_LDAP_ADMIN_PW
) {
300 char *ldap_admin_dn
= lp_ldap_admin_dn();
301 if ( ! *ldap_admin_dn
) {
302 DEBUG(0,("ERROR: 'ldap admin dn' not defined! Please check your smb.conf\n"));
306 printf("Setting stored password for \"%s\" in secrets.tdb\n", ldap_admin_dn
);
307 if ( ! *ldap_secret
) {
308 new_passwd
= prompt_for_new_password(stdin_passwd_get
);
309 fstrcpy(ldap_secret
, new_passwd
);
311 if (!store_ldap_admin_pw(ldap_secret
)) {
312 DEBUG(0,("ERROR: Failed to store the ldap admin password!\n"));
317 /* Ensure passdb startup(). */
318 if(!initialize_password_db(False
, NULL
)) {
319 DEBUG(0, ("Failed to open passdb!\n"));
323 /* Ensure we have a SAM sid. */
324 get_global_sam_sid();
327 * Ensure both add/delete user are not set
328 * Ensure add/delete user and either remote machine or join domain are
331 if(((local_flags
& (LOCAL_ADD_USER
|LOCAL_DELETE_USER
)) == (LOCAL_ADD_USER
|LOCAL_DELETE_USER
)) ||
332 ((local_flags
& (LOCAL_ADD_USER
|LOCAL_DELETE_USER
)) &&
333 (remote_machine
!= NULL
))) {
337 /* Only load interfaces if we are doing network operations. */
339 if (remote_machine
) {
343 if (!user_name
[0] && (pwd
= getpwuid_alloc(talloc_autofree_context(), geteuid()))) {
344 fstrcpy(user_name
, pwd
->pw_name
);
349 fprintf(stderr
,"You must specify a username\n");
353 if (local_flags
& LOCAL_TRUST_ACCOUNT
) {
354 /* add the $ automatically */
358 * Remove any trailing '$' before we
359 * generate the initial machine password.
362 if (user_name
[strlen(user_name
)-1] == '$') {
363 user_name
[strlen(user_name
)-1] = 0;
366 if (local_flags
& LOCAL_ADD_USER
) {
367 SAFE_FREE(new_passwd
);
368 new_passwd
= smb_xstrdup(user_name
);
369 strlower_m(new_passwd
);
373 * Now ensure the username ends in '$' for
377 slprintf(buf
, sizeof(buf
)-1, "%s$", user_name
);
378 fstrcpy(user_name
, buf
);
379 } else if (local_flags
& LOCAL_INTERDOM_ACCOUNT
) {
382 if ((local_flags
& LOCAL_ADD_USER
) && (new_passwd
== NULL
)) {
384 * Prompt for trusting domain's account password
386 new_passwd
= prompt_for_new_password(stdin_passwd_get
);
388 fprintf(stderr
, "Unable to get newpassword.\n");
393 /* prepare uppercased and '$' terminated username */
394 slprintf(buf
, sizeof(buf
) - 1, "%s$", user_name
);
395 fstrcpy(user_name
, buf
);
399 if (remote_machine
!= NULL
) {
400 old_passwd
= get_pass("Old SMB password:",stdin_passwd_get
);
403 if (!(local_flags
& LOCAL_SET_PASSWORD
)) {
406 * If we are trying to enable a user, first we need to find out
407 * if they are using a modern version of the smbpasswd file that
408 * disables a user by just writing a flag into the file. If so
409 * then we can re-enable a user without prompting for a new
410 * password. If not (ie. they have a no stored password in the
411 * smbpasswd file) then we need to prompt for a new password.
414 if(local_flags
& LOCAL_ENABLE_USER
) {
415 struct samu
*sampass
= NULL
;
417 sampass
= samu_new( NULL
);
419 fprintf(stderr
, "talloc fail for struct samu.\n");
422 if (!pdb_getsampwnam(sampass
, user_name
)) {
423 fprintf(stderr
, "Failed to find user %s in passdb backend.\n",
428 if(pdb_get_nt_passwd(sampass
) == NULL
) {
429 local_flags
|= LOCAL_SET_PASSWORD
;
431 TALLOC_FREE(sampass
);
435 if((local_flags
& LOCAL_SET_PASSWORD
) && (new_passwd
== NULL
)) {
437 new_passwd
= prompt_for_new_password(stdin_passwd_get
);
439 fprintf(stderr
, "Unable to get new password.\n");
445 if (!NT_STATUS_IS_OK(password_change(remote_machine
, user_name
,
446 old_passwd
, new_passwd
,
453 printf("Password changed for user %s on %s.\n", user_name
, remote_machine
);
454 } else if(!(local_flags
& (LOCAL_ADD_USER
|LOCAL_DISABLE_USER
|LOCAL_ENABLE_USER
|LOCAL_DELETE_USER
|LOCAL_SET_NO_PASSWORD
|LOCAL_SET_PASSWORD
))) {
455 struct samu
*sampass
= NULL
;
457 sampass
= samu_new( NULL
);
459 fprintf(stderr
, "talloc fail for struct samu.\n");
463 if (!pdb_getsampwnam(sampass
, user_name
)) {
464 fprintf(stderr
, "Failed to find user %s in passdb backend.\n",
469 printf("Password changed for user %s.", user_name
);
470 if(pdb_get_acct_ctrl(sampass
)&ACB_DISABLED
) {
471 printf(" User has disabled flag set.");
473 if(pdb_get_acct_ctrl(sampass
) & ACB_PWNOTREQ
) {
474 printf(" User has no password flag set.");
477 TALLOC_FREE(sampass
);
481 SAFE_FREE(new_passwd
);
486 /*************************************************************
487 Handle password changing for non-root.
488 *************************************************************/
490 static int process_nonroot(int local_flags
)
492 struct passwd
*pwd
= NULL
;
497 if (local_flags
& ~(LOCAL_AM_ROOT
| LOCAL_SET_PASSWORD
)) {
498 /* Extra flags that we can't honor non-root */
503 pwd
= getpwuid_alloc(talloc_autofree_context(), getuid());
505 fstrcpy(user_name
,pwd
->pw_name
);
508 fprintf(stderr
, "smbpasswd: cannot lookup user name for uid %u\n", (unsigned int)getuid());
514 * A non-root user is always setting a password
515 * via a remote machine (even if that machine is
519 load_interfaces(); /* Delayed from main() */
521 if (remote_machine
== NULL
) {
522 remote_machine
= "127.0.0.1";
525 if (remote_machine
!= NULL
) {
526 old_pw
= get_pass("Old SMB password:",stdin_passwd_get
);
530 new_pw
= prompt_for_new_password(stdin_passwd_get
);
533 new_pw
= smb_xstrdup(new_passwd
);
536 fprintf(stderr
, "Unable to get new password.\n");
540 if (!NT_STATUS_IS_OK(password_change(remote_machine
, user_name
, old_pw
,
546 printf("Password changed for user %s\n", user_name
);
557 /*********************************************************
559 **********************************************************/
560 int main(int argc
, char **argv
)
562 TALLOC_CTX
*frame
= talloc_stackframe();
566 AllowDebugChange
= False
;
568 #if defined(HAVE_SET_AUTH_PARAMETERS)
569 set_auth_parameters(argc
, argv
);
570 #endif /* HAVE_SET_AUTH_PARAMETERS */
573 local_flags
= LOCAL_AM_ROOT
;
578 local_flags
= process_options(argc
, argv
, local_flags
);
580 setup_logging("smbpasswd", True
);
583 * Set the machine NETBIOS name if not already
584 * set from the config file.
590 /* Check the effective uid - make sure we are not setuid */
591 if (is_setuid_root()) {
592 fprintf(stderr
, "smbpasswd must *NOT* be setuid root.\n");
596 if (local_flags
& LOCAL_AM_ROOT
) {
598 return process_root(local_flags
);
601 ret
= process_nonroot(local_flags
);