2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
4 * Copyright 2004-2006 The OpenLDAP Foundation.
5 * Portions Copyright 2004-2005 Howard Chu, Symas Corporation.
6 * Portions Copyright 2004 Hewlett-Packard Company.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted only as authorized by the OpenLDAP
13 * A copy of this license is available in the file LICENSE in the
14 * top-level directory of the distribution or, alternatively, at
15 * <http://www.OpenLDAP.org/license.html>.
18 * This work was developed by Howard Chu for inclusion in
19 * OpenLDAP Software, based on prior work by Neil Dunbar (HP).
20 * This work was sponsored by the Hewlett-Packard Company.
25 /* This file implements "Password Policy for LDAP Directories",
26 * based on draft behera-ldap-password-policy-09
29 #ifdef SLAPD_OVER_PPOLICY
35 #define LIBLTDL_DLL_IMPORT /* Win32: don't re-export libltdl's symbols */
40 #include <ac/string.h>
43 #ifndef MODULE_NAME_SZ
44 #define MODULE_NAME_SZ 256
47 /* Per-instance configuration information */
48 typedef struct pp_info {
49 struct berval def_policy; /* DN of default policy subentry */
50 int use_lockout; /* send AccountLocked result? */
51 int hash_passwords; /* transparently hash cleartext pwds */
54 /* Our per-connection info - note, it is not per-instance, it is
55 * used by all instances
57 typedef struct pw_conn {
58 struct berval dn; /* DN of restricted user */
61 static pw_conn *pwcons;
62 static int ppolicy_cid;
64 typedef struct pass_policy {
65 AttributeDescription *ad; /* attribute to which the policy applies */
66 int pwdMinAge; /* minimum time (seconds) until passwd can change */
67 int pwdMaxAge; /* time in seconds until pwd will expire after change */
68 int pwdInHistory; /* number of previous passwords kept */
69 int pwdCheckQuality; /* 0 = don't check quality, 1 = check if possible,
70 2 = check mandatory; fail if not possible */
71 int pwdMinLength; /* minimum number of chars in password */
72 int pwdExpireWarning; /* number of seconds that warning controls are
73 sent before a password expires */
74 int pwdGraceAuthNLimit; /* number of times you can log in with an
76 int pwdLockout; /* 0 = do not lockout passwords, 1 = lock them out */
77 int pwdLockoutDuration; /* time in seconds a password is locked out for */
78 int pwdMaxFailure; /* number of failed binds allowed before lockout */
79 int pwdFailureCountInterval; /* number of seconds before failure
81 int pwdMustChange; /* 0 = users can use admin set password
82 1 = users must change password after admin set */
83 int pwdAllowUserChange; /* 0 = users cannot change their passwords
84 1 = users can change them */
85 int pwdSafeModify; /* 0 = old password doesn't need to come
86 with password change request
87 1 = password change must supply existing pwd */
88 char pwdCheckModule[MODULE_NAME_SZ]; /* name of module to dynamically
89 load to check password */
92 typedef struct pw_hist {
93 time_t t; /* timestamp of history entry */
94 struct berval pw; /* old password hash */
95 struct berval bv; /* text of entire entry */
99 /* Operational attributes */
100 static AttributeDescription *ad_pwdChangedTime, *ad_pwdAccountLockedTime,
101 *ad_pwdFailureTime, *ad_pwdHistory, *ad_pwdGraceUseTime, *ad_pwdReset,
102 *ad_pwdPolicySubentry;
104 static struct schema_info {
106 AttributeDescription **ad;
108 { "( 1.3.6.1.4.1.42.2.27.8.1.16 "
109 "NAME ( 'pwdChangedTime' ) "
110 "DESC 'The time the password was last changed' "
111 "EQUALITY generalizedTimeMatch "
112 "ORDERING generalizedTimeOrderingMatch "
113 "SYNTAX 1.3.6.1.4.1.1466.115.121.1.24 "
114 "SINGLE-VALUE NO-USER-MODIFICATION USAGE directoryOperation )",
115 &ad_pwdChangedTime },
116 { "( 1.3.6.1.4.1.42.2.27.8.1.17 "
117 "NAME ( 'pwdAccountLockedTime' ) "
118 "DESC 'The time an user account was locked' "
119 "EQUALITY generalizedTimeMatch "
120 "ORDERING generalizedTimeOrderingMatch "
121 "SYNTAX 1.3.6.1.4.1.1466.115.121.1.24 "
124 /* Not until MANAGEDIT control is released */
125 "NO-USER-MODIFICATION "
127 "USAGE directoryOperation )",
128 &ad_pwdAccountLockedTime },
129 { "( 1.3.6.1.4.1.42.2.27.8.1.19 "
130 "NAME ( 'pwdFailureTime' ) "
131 "DESC 'The timestamps of the last consecutive authentication failures' "
132 "EQUALITY generalizedTimeMatch "
133 "ORDERING generalizedTimeOrderingMatch "
134 "SYNTAX 1.3.6.1.4.1.1466.115.121.1.24 "
135 "NO-USER-MODIFICATION USAGE directoryOperation )",
136 &ad_pwdFailureTime },
137 { "( 1.3.6.1.4.1.42.2.27.8.1.20 "
138 "NAME ( 'pwdHistory' ) "
139 "DESC 'The history of users passwords' "
140 "EQUALITY octetStringMatch "
141 "SYNTAX 1.3.6.1.4.1.1466.115.121.1.40 "
142 "NO-USER-MODIFICATION USAGE directoryOperation )",
144 { "( 1.3.6.1.4.1.42.2.27.8.1.21 "
145 "NAME ( 'pwdGraceUseTime' ) "
146 "DESC 'The timestamps of the grace login once the password has expired' "
147 "EQUALITY generalizedTimeMatch "
148 "SYNTAX 1.3.6.1.4.1.1466.115.121.1.24 "
149 "NO-USER-MODIFICATION USAGE directoryOperation )",
150 &ad_pwdGraceUseTime },
151 { "( 1.3.6.1.4.1.42.2.27.8.1.22 "
152 "NAME ( 'pwdReset' ) "
153 "DESC 'The indication that the password has been reset' "
154 "EQUALITY booleanMatch "
155 "SYNTAX 1.3.6.1.4.1.1466.115.121.1.7 "
156 "SINGLE-VALUE USAGE directoryOperation )",
158 { "( 1.3.6.1.4.1.42.2.27.8.1.23 "
159 "NAME ( 'pwdPolicySubentry' ) "
160 "DESC 'The pwdPolicy subentry in effect for this object' "
161 "EQUALITY distinguishedNameMatch "
162 "SYNTAX 1.3.6.1.4.1.1466.115.121.1.12 "
165 /* Not until MANAGEDIT control is released */
166 "NO-USER-MODIFICATION "
168 "USAGE directoryOperation )",
169 &ad_pwdPolicySubentry },
173 /* User attributes */
174 static AttributeDescription *ad_pwdMinAge, *ad_pwdMaxAge, *ad_pwdInHistory,
175 *ad_pwdCheckQuality, *ad_pwdMinLength, *ad_pwdMaxFailure,
176 *ad_pwdGraceAuthNLimit, *ad_pwdExpireWarning, *ad_pwdLockoutDuration,
177 *ad_pwdFailureCountInterval, *ad_pwdCheckModule, *ad_pwdLockout,
178 *ad_pwdMustChange, *ad_pwdAllowUserChange, *ad_pwdSafeModify,
181 #define TAB(name) { #name, &ad_##name }
183 static struct schema_info pwd_UsSchema[] = {
188 TAB(pwdCheckQuality),
191 TAB(pwdGraceAuthNLimit),
192 TAB(pwdExpireWarning),
194 TAB(pwdLockoutDuration),
195 TAB(pwdFailureCountInterval),
198 TAB(pwdAllowUserChange),
203 static ldap_pvt_thread_mutex_t chk_syntax_mutex;
206 parse_time( char *atm )
209 struct lutil_timet tt;
210 time_t ret = (time_t)-1;
212 if ( lutil_parsetime( atm, &tm ) == 0) {
213 lutil_tm2time( &tm, &tt );
220 account_locked( Operation *op, Entry *e,
221 PassPolicy *pp, Modifications **mod )
227 if ( (la = attr_find( e->e_attrs, ad_pwdAccountLockedTime )) != NULL ) {
228 BerVarray vals = la->a_nvals;
231 * there is a lockout stamp - we now need to know if it's
234 if (vals[0].bv_val != NULL) {
238 if (!pp->pwdLockoutDuration)
241 if ((then = parse_time( vals[0].bv_val )) == (time_t)0)
244 now = slap_get_time();
246 if (now < then + pp->pwdLockoutDuration)
249 m = ch_calloc( sizeof(Modifications), 1 );
250 m->sml_op = LDAP_MOD_DELETE;
252 m->sml_type = ad_pwdAccountLockedTime->ad_cname;
253 m->sml_desc = ad_pwdAccountLockedTime;
262 /* IMPLICIT TAGS, all context-specific */
263 #define PPOLICY_WARNING 0xa0L /* constructed + 0 */
264 #define PPOLICY_ERROR 0x81L /* primitive + 1 */
266 #define PPOLICY_EXPIRE 0x80L /* primitive + 0 */
267 #define PPOLICY_GRACE 0x81L /* primitive + 1 */
270 create_passcontrol( int exptime, int grace, LDAPPasswordPolicyError err )
272 char berbuf[LBER_ELEMENT_SIZEOF], bb2[LBER_ELEMENT_SIZEOF];
273 BerElement *ber = (BerElement *)berbuf, *b2 = (BerElement *)bb2;
277 if ((c = ch_calloc( sizeof( LDAPControl ), 1 )) == NULL) return NULL;
278 c->ldctl_oid = LDAP_CONTROL_PASSWORDPOLICYRESPONSE;
279 c->ldctl_iscritical = 0;
280 c->ldctl_value.bv_val = NULL;
281 c->ldctl_value.bv_len = 0;
283 ber_init2( ber, NULL, LBER_USE_DER );
284 ber_printf(ber, "{" /*}*/ );
287 ber_init2( b2, NULL, LBER_USE_DER );
288 ber_printf( b2, "ti", PPOLICY_EXPIRE, exptime );
289 ber_flatten2( b2, &bv, 1 );
290 ber_printf( ber, "tO", PPOLICY_WARNING, &bv );
291 ch_free( bv.bv_val );
292 } else if (grace > 0) {
293 ber_init2( b2, NULL, LBER_USE_DER );
294 ber_printf( b2, "ti", PPOLICY_GRACE, grace );
295 ber_flatten2( b2, &bv, 1 );
296 ber_printf( ber, "tO", PPOLICY_WARNING, &bv );
297 ch_free( bv.bv_val );
300 if (err != PP_noError ) {
301 ber_printf( ber, "te", PPOLICY_ERROR, err );
303 ber_printf( ber, /*{*/ "N}" );
305 if (ber_flatten2( ber, &(c->ldctl_value), 1 ) == LBER_DEFAULT) {
307 (void)ber_free_buf(ber);
310 (void)ber_free_buf(ber);
315 ppolicy_get( Operation *op, Entry *e, PassPolicy *pp )
317 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
318 pp_info *pi = on->on_bi.bi_private;
327 memset( pp, 0, sizeof(PassPolicy) );
329 /* Users can change their own password by default */
330 pp->pwdAllowUserChange = 1;
332 if ((a = attr_find( e->e_attrs, ad_pwdPolicySubentry )) == NULL) {
334 * entry has no password policy assigned - use default
336 vals = &pi->def_policy;
341 if (vals[0].bv_val == NULL) {
342 Debug( LDAP_DEBUG_ANY,
343 "ppolicy_get: NULL value for policySubEntry\n", 0, 0, 0 );
348 op->o_bd->bd_info = (BackendInfo *)on->on_info;
349 rc = be_entry_get_rw( op, vals, NULL, NULL, 0, &pe );
350 op->o_bd->bd_info = (BackendInfo *)on;
352 if ( rc ) goto defaultpol;
354 #if 0 /* Only worry about userPassword for now */
355 if ((a = attr_find( pe->e_attrs, ad_pwdAttribute )))
356 slap_bv2ad( &a->a_vals[0], &pp->ad, &text );
358 pp->ad = slap_schema.si_ad_userPassword;
361 if ( ( a = attr_find( pe->e_attrs, ad_pwdMinAge ) )
362 && lutil_atoi( &pp->pwdMinAge, a->a_vals[0].bv_val ) != 0 )
364 if ( ( a = attr_find( pe->e_attrs, ad_pwdMaxAge ) )
365 && lutil_atoi( &pp->pwdMaxAge, a->a_vals[0].bv_val ) != 0 )
367 if ( ( a = attr_find( pe->e_attrs, ad_pwdInHistory ) )
368 && lutil_atoi( &pp->pwdInHistory, a->a_vals[0].bv_val ) != 0 )
370 if ( ( a = attr_find( pe->e_attrs, ad_pwdCheckQuality ) )
371 && lutil_atoi( &pp->pwdCheckQuality, a->a_vals[0].bv_val ) != 0 )
373 if ( ( a = attr_find( pe->e_attrs, ad_pwdMinLength ) )
374 && lutil_atoi( &pp->pwdMinLength, a->a_vals[0].bv_val ) != 0 )
376 if ( ( a = attr_find( pe->e_attrs, ad_pwdMaxFailure ) )
377 && lutil_atoi( &pp->pwdMaxFailure, a->a_vals[0].bv_val ) != 0 )
379 if ( ( a = attr_find( pe->e_attrs, ad_pwdGraceAuthNLimit ) )
380 && lutil_atoi( &pp->pwdGraceAuthNLimit, a->a_vals[0].bv_val ) != 0 )
382 if ( ( a = attr_find( pe->e_attrs, ad_pwdExpireWarning ) )
383 && lutil_atoi( &pp->pwdExpireWarning, a->a_vals[0].bv_val ) != 0 )
385 if ( ( a = attr_find( pe->e_attrs, ad_pwdFailureCountInterval ) )
386 && lutil_atoi( &pp->pwdFailureCountInterval, a->a_vals[0].bv_val ) != 0 )
388 if ( ( a = attr_find( pe->e_attrs, ad_pwdLockoutDuration ) )
389 && lutil_atoi( &pp->pwdLockoutDuration, a->a_vals[0].bv_val ) != 0 )
392 if ( ( a = attr_find( pe->e_attrs, ad_pwdCheckModule ) ) ) {
393 strncpy( pp->pwdCheckModule, a->a_vals[0].bv_val,
394 sizeof(pp->pwdCheckModule) );
395 pp->pwdCheckModule[sizeof(pp->pwdCheckModule)-1] = '\0';
398 if ((a = attr_find( pe->e_attrs, ad_pwdLockout )))
399 pp->pwdLockout = !strcmp( a->a_nvals[0].bv_val, "TRUE" );
400 if ((a = attr_find( pe->e_attrs, ad_pwdMustChange )))
401 pp->pwdMustChange = !strcmp( a->a_nvals[0].bv_val, "TRUE" );
402 if ((a = attr_find( pe->e_attrs, ad_pwdAllowUserChange )))
403 pp->pwdAllowUserChange = !strcmp( a->a_nvals[0].bv_val, "TRUE" );
404 if ((a = attr_find( pe->e_attrs, ad_pwdSafeModify )))
405 pp->pwdSafeModify = !strcmp( a->a_nvals[0].bv_val, "TRUE" );
407 op->o_bd->bd_info = (BackendInfo *)on->on_info;
408 be_entry_release_r( op, pe );
409 op->o_bd->bd_info = (BackendInfo *)on;
414 Debug( LDAP_DEBUG_ANY,
415 "ppolicy_get: using default policy\n", 0, 0, 0 );
420 password_scheme( struct berval *cred, struct berval *sch )
424 assert( cred != NULL );
431 if ((cred->bv_len == 0) || (cred->bv_val == NULL) ||
432 (cred->bv_val[0] != '{')) return LDAP_OTHER;
434 for(e = 1; cred->bv_val[e] && cred->bv_val[e] != '}'; e++);
435 if (cred->bv_val[e]) {
437 rc = lutil_passwd_scheme( cred->bv_val );
439 sch->bv_val = cred->bv_val;
448 check_password_quality( struct berval *cred, PassPolicy *pp, LDAPPasswordPolicyError *err, Entry *e )
450 int rc = LDAP_SUCCESS, ok = LDAP_SUCCESS;
451 char *ptr = cred->bv_val;
454 assert( cred != NULL );
455 assert( pp != NULL );
457 if ((cred->bv_len == 0) || (pp->pwdMinLength > cred->bv_len)) {
458 rc = LDAP_CONSTRAINT_VIOLATION;
459 if ( err ) *err = PP_passwordTooShort;
464 * We need to know if the password is already hashed - if so
465 * what scheme is it. The reason being that the "hash" of
466 * {cleartext} still allows us to check the password.
468 rc = password_scheme( cred, &sch );
469 if (rc == LDAP_SUCCESS) {
470 if ((sch.bv_val) && (strncasecmp( sch.bv_val, "{cleartext}",
471 sch.bv_len ) == 0)) {
473 * We can check the cleartext "hash"
475 ptr = cred->bv_val + sch.bv_len;
477 /* everything else, we can't check */
478 if (pp->pwdCheckQuality == 2) {
479 rc = LDAP_CONSTRAINT_VIOLATION;
480 if (err) *err = PP_insufficientPasswordQuality;
484 * We can't check the syntax of the password, but it's not
485 * mandatory (according to the policy), so we return success.
494 if (pp->pwdCheckModule[0]) {
499 if ((mod = lt_dlopen( pp->pwdCheckModule )) == NULL) {
502 Debug(LDAP_DEBUG_ANY,
503 "check_password_quality: lt_dlopen failed: (%s) %s.\n",
504 pp->pwdCheckModule, err, 0 );
505 ok = LDAP_OTHER; /* internal error */
507 int (*prog)( char *passwd, char **text, Entry *ent );
509 if ((prog = lt_dlsym( mod, "check_password" )) == NULL) {
512 Debug(LDAP_DEBUG_ANY,
513 "check_password_quality: lt_dlsym failed: (%s) %s.\n",
514 pp->pwdCheckModule, err, 0 );
519 ldap_pvt_thread_mutex_lock( &chk_syntax_mutex );
520 ok = prog( cred->bv_val, &txt, e );
521 ldap_pvt_thread_mutex_unlock( &chk_syntax_mutex );
523 Debug(LDAP_DEBUG_ANY,
524 "check_password_quality: module error: (%s) %s.[%d]\n",
525 pp->pwdCheckModule, txt, ok );
534 Debug(LDAP_DEBUG_ANY, "check_password_quality: external modules not "
535 "supported. pwdCheckModule ignored.\n", 0, 0, 0);
536 #endif /* SLAPD_MODULES */
540 if (ok != LDAP_SUCCESS) {
541 rc = LDAP_CONSTRAINT_VIOLATION;
542 if (err) *err = PP_insufficientPasswordQuality;
549 parse_pwdhistory( struct berval *bv, char **oid, time_t *oldtime, struct berval *oldpw )
552 struct berval nv, npw;
555 assert (bv && (bv->bv_len > 0) && (bv->bv_val) && oldtime && oldpw );
558 *oldtime = (time_t)-1;
559 oldpw->bv_val = NULL;
562 ber_dupbv( &nv, bv );
564 /* first get the time field */
565 for(i=0; (i < nv.bv_len) && (nv.bv_val[i] != '#'); i++);
566 if ( i == nv.bv_len) goto exit_failure; /* couldn't locate the '#' separator */
567 nv.bv_val[i++] = '\0'; /* terminate the string & move to next field */
569 *oldtime = parse_time( ptr );
570 if (*oldtime == (time_t)-1) goto exit_failure;
572 /* get the OID field */
573 for(ptr = &(nv.bv_val[i]);(i < nv.bv_len) && (nv.bv_val[i] != '#'); i++);
574 if ( i == nv.bv_len) goto exit_failure; /* couldn't locate the '#' separator */
575 nv.bv_val[i++] = '\0'; /* terminate the string & move to next field */
576 if ( oid ) *oid = ber_strdup( ptr );
578 /* get the length field */
579 for(ptr = &(nv.bv_val[i]);(i < nv.bv_len) && (nv.bv_val[i] != '#'); i++);
580 if ( i == nv.bv_len) goto exit_failure; /* couldn't locate the '#' separator */
581 nv.bv_val[i++] = '\0'; /* terminate the string & move to next field */
582 oldpw->bv_len = strtol( ptr, NULL, 10 );
583 if (errno == ERANGE) goto exit_failure;
585 /* lastly, get the octets of the string */
586 for(j=i, ptr = &(nv.bv_val[i]);i < nv.bv_len; i++);
587 if (i-j != oldpw->bv_len) goto exit_failure; /* length is wrong */
590 npw.bv_len = oldpw->bv_len;
591 ber_dupbv( oldpw, &npw );
595 if (oid && *oid) { ber_memfree(*oid); *oid = NULL; }
597 ber_memfree( oldpw->bv_val); oldpw->bv_val = NULL;
600 ber_memfree(nv.bv_val);
605 add_to_pwd_history( pw_hist **l, time_t t,
606 struct berval *oldpw, struct berval *bv )
608 pw_hist *p, *p1, *p2;
612 p = ch_malloc( sizeof( pw_hist ));
614 ber_dupbv( &p->bv, bv );
619 /* degenerate case */
624 * advance p1 and p2 such that p1 is the node before the
625 * new one, and p2 is the node after it
627 for (p1 = NULL, p2 = *l; p2 && p2->t <= t; p1 = p2, p2=p2->next );
629 if (p1 == NULL) { *l = p; return; }
633 #ifndef MAX_PWD_HISTORY_SZ
634 #define MAX_PWD_HISTORY_SZ 1024
635 #endif /* MAX_PWD_HISTORY_SZ */
638 make_pwd_history_value( char *timebuf, struct berval *bv, Attribute *pa )
640 char str[ MAX_PWD_HISTORY_SZ ];
643 snprintf( str, MAX_PWD_HISTORY_SZ,
644 "%s#%s#%lu#", timebuf,
645 pa->a_desc->ad_type->sat_syntax->ssyn_oid,
646 (unsigned long) pa->a_nvals[0].bv_len );
647 str[MAX_PWD_HISTORY_SZ-1] = 0;
651 * We have to assume that the string is a string of octets,
652 * not readable characters. In reality, yes, it probably is
653 * a readable (ie, base64) string, but we can't count on that
654 * Hence, while the first 3 fields of the password history
655 * are definitely readable (a timestamp, an OID and an integer
656 * length), the remaining octets of the actual password
657 * are deemed to be binary data.
659 AC_MEMCPY( str + nlen, pa->a_nvals[0].bv_val, pa->a_nvals[0].bv_len );
660 nlen += pa->a_nvals[0].bv_len;
661 bv->bv_val = ch_malloc( nlen + 1 );
662 AC_MEMCPY( bv->bv_val, str, nlen );
663 bv->bv_val[nlen] = '\0';
668 free_pwd_history_list( pw_hist **l )
675 pw_hist *pp = p->next;
685 typedef struct ppbind {
689 LDAPPasswordPolicyError pErr;
694 ppolicy_bind_resp( Operation *op, SlapReply *rs )
696 ppbind *ppb = op->o_callback->sc_private;
697 slap_overinst *on = ppb->on;
698 Modifications *mod = ppb->mod, *m;
700 int ngut = -1, warn = -1, age, rc;
702 time_t now, pwtime = (time_t)-1;
703 char nowstr[ LDAP_LUTIL_GENTIME_BUFSIZE ];
704 struct berval timestamp;
705 BackendInfo *bi = op->o_bd->bd_info;
708 /* If we already know it's locked, just get on with it */
709 if ( ppb->pErr != PP_noError ) {
713 op->o_bd->bd_info = (BackendInfo *)on->on_info;
714 rc = be_entry_get_rw( op, &op->o_req_ndn, NULL, NULL, 0, &e );
715 op->o_bd->bd_info = bi;
717 if ( rc != LDAP_SUCCESS ) {
718 return SLAP_CB_CONTINUE;
721 now = slap_get_time(); /* stored for later consideration */
722 timestamp.bv_val = nowstr;
723 timestamp.bv_len = sizeof(nowstr);
724 slap_timestamp( &now, ×tamp );
726 if ( rs->sr_err == LDAP_INVALID_CREDENTIALS ) {
729 m = ch_calloc( sizeof(Modifications), 1 );
730 m->sml_op = LDAP_MOD_ADD;
732 m->sml_type = ad_pwdFailureTime->ad_cname;
733 m->sml_desc = ad_pwdFailureTime;
734 m->sml_values = ch_calloc( sizeof(struct berval), 2 );
735 m->sml_nvalues = ch_calloc( sizeof(struct berval), 2 );
737 ber_dupbv( &m->sml_values[0], ×tamp );
738 ber_dupbv( &m->sml_nvalues[0], ×tamp );
743 * Count the pwdFailureTimes - if it's
744 * greater than the policy pwdMaxFailure,
745 * then lock the account.
747 if ((a = attr_find( e->e_attrs, ad_pwdFailureTime )) != NULL) {
748 for(i=0; a->a_nvals[i].bv_val; i++) {
751 * If the interval is 0, then failures
752 * stay on the record until explicitly
753 * reset by successful authentication.
755 if (ppb->pp.pwdFailureCountInterval == 0) {
758 parse_time(a->a_nvals[i].bv_val) +
759 ppb->pp.pwdFailureCountInterval) {
764 * We only count those failures
765 * which are not due to expire.
770 if ((ppb->pp.pwdMaxFailure > 0) &&
771 (fc >= ppb->pp.pwdMaxFailure - 1)) {
774 * We subtract 1 from the failure max
775 * because the new failure entry hasn't
776 * made it to the entry yet.
778 m = ch_calloc( sizeof(Modifications), 1 );
779 m->sml_op = LDAP_MOD_REPLACE;
781 m->sml_type = ad_pwdAccountLockedTime->ad_cname;
782 m->sml_desc = ad_pwdAccountLockedTime;
783 m->sml_values = ch_calloc( sizeof(struct berval), 2 );
784 m->sml_nvalues = ch_calloc( sizeof(struct berval), 2 );
785 ber_dupbv( &m->sml_values[0], ×tamp );
786 ber_dupbv( &m->sml_nvalues[0], ×tamp );
790 } else if ( rs->sr_err == LDAP_SUCCESS ) {
791 if ((a = attr_find( e->e_attrs, ad_pwdChangedTime )) != NULL)
792 pwtime = parse_time( a->a_nvals[0].bv_val );
794 /* delete all pwdFailureTimes */
795 if ( attr_find( e->e_attrs, ad_pwdFailureTime )) {
796 m = ch_calloc( sizeof(Modifications), 1 );
797 m->sml_op = LDAP_MOD_DELETE;
799 m->sml_type = ad_pwdFailureTime->ad_cname;
800 m->sml_desc = ad_pwdFailureTime;
806 * check to see if the password must be changed
808 if ( ppb->pp.pwdMustChange &&
809 (a = attr_find( e->e_attrs, ad_pwdReset )) &&
810 !strcmp( a->a_nvals[0].bv_val, "TRUE" ) ) {
812 * need to inject client controls here to give
813 * more information. For the moment, we ensure
814 * that we are disallowed from doing anything
815 * other than change password.
817 ber_dupbv( &pwcons[op->o_conn->c_conn_idx].dn,
818 &op->o_conn->c_ndn );
820 ppb->pErr = PP_changeAfterReset;
824 * the password does not need to be changed, so
825 * we now check whether the password has expired.
827 * We can skip this bit if passwords don't age in
830 if (ppb->pp.pwdMaxAge == 0) goto grace;
832 if (pwtime == (time_t)-1) {
834 * Hmm. No password changed time on the
835 * entry. This is odd - it should have
836 * been provided when the attribute was added.
838 * However, it's possible that it could be
839 * missing if the DIT was established via
842 Debug( LDAP_DEBUG_ANY,
843 "ppolicy_bind: Entry %s does not have valid pwdChangedTime attribute - assuming password expired\n",
844 e->e_name.bv_val, 0, 0);
849 * Check: was the last change time of
850 * the password older than the maximum age
851 * allowed. (Ignore case 2 from I-D, it's just silly.)
853 if (now - pwtime > ppb->pp.pwdMaxAge ) pwExpired = 1;
858 if (!pwExpired) goto check_expiring_password;
860 if ((a = attr_find( e->e_attrs, ad_pwdGraceUseTime )) == NULL)
861 ngut = ppb->pp.pwdGraceAuthNLimit;
863 for(ngut=0; a->a_nvals[ngut].bv_val; ngut++);
864 ngut = ppb->pp.pwdGraceAuthNLimit - ngut;
868 * ngut is the number of remaining grace logins
870 Debug( LDAP_DEBUG_ANY,
871 "ppolicy_bind: Entry %s has an expired password: %d grace logins\n",
872 e->e_name.bv_val, ngut, 0);
875 ppb->pErr = PP_passwordExpired;
876 rs->sr_err = LDAP_INVALID_CREDENTIALS;
881 * Add a grace user time to the entry
883 m = ch_calloc( sizeof(Modifications), 1 );
884 m->sml_op = LDAP_MOD_ADD;
886 m->sml_type = ad_pwdGraceUseTime->ad_cname;
887 m->sml_desc = ad_pwdGraceUseTime;
888 m->sml_values = ch_calloc( sizeof(struct berval), 2 );
889 m->sml_nvalues = ch_calloc( sizeof(struct berval), 2 );
890 ber_dupbv( &m->sml_values[0], ×tamp );
891 ber_dupbv( &m->sml_nvalues[0], ×tamp );
895 check_expiring_password:
897 * Now we need to check to see
898 * if it is about to expire, and if so, should the user
899 * be warned about it in the password policy control.
901 * If the password has expired, and we're in the grace period, then
902 * we don't need to do this bit. Similarly, if we don't have password
903 * aging, then there's no need to do this bit either.
905 if ((ppb->pp.pwdMaxAge < 1) || (pwExpired) || (ppb->pp.pwdExpireWarning < 1))
908 age = (int)(now - pwtime);
911 * We know that there is a password Change Time attribute - if
912 * there wasn't, then the pwdExpired value would be true, unless
913 * there is no password aging - and if there is no password aging,
914 * then this section isn't called anyway - you can't have an
915 * expiring password if there's no limit to expire.
917 if (ppb->pp.pwdMaxAge - age < ppb->pp.pwdExpireWarning ) {
919 * Set the warning value.
921 warn = ppb->pp.pwdMaxAge - age; /* seconds left until expiry */
922 if (warn < 0) warn = 0; /* something weird here - why is pwExpired not set? */
924 Debug( LDAP_DEBUG_ANY,
925 "ppolicy_bind: Setting warning for password expiry for %s = %d seconds\n",
926 op->o_req_dn.bv_val, warn, 0 );
931 op->o_bd->bd_info = (BackendInfo *)on->on_info;
932 be_entry_release_r( op, e );
937 SlapReply r2 = { REP_RESULT };
938 slap_callback cb = { NULL, slap_null_cb, NULL, NULL };
940 /* FIXME: Need to handle replication of some (but not all)
941 * of the operational attributes...
943 op2.o_tag = LDAP_REQ_MODIFY;
944 op2.o_callback = &cb;
945 op2.orm_modlist = mod;
946 op2.o_dn = op->o_bd->be_rootdn;
947 op2.o_ndn = op->o_bd->be_rootndn;
948 op2.o_bd->bd_info = (BackendInfo *)on->on_info;
949 rc = op->o_bd->be_modify( &op2, &r2 );
950 slap_mods_free( mod, 1 );
953 if ( ppb->send_ctrl ) {
954 LDAPControl **ctrls = NULL;
955 pp_info *pi = on->on_bi.bi_private;
957 /* Do we really want to tell that the account is locked? */
958 if ( ppb->pErr == PP_accountLocked && !pi->use_lockout ) {
959 ppb->pErr = PP_noError;
961 ctrls = ch_calloc( sizeof( LDAPControl *) , 2 );
962 ctrls[0] = create_passcontrol( warn, ngut, ppb->pErr );
964 rs->sr_ctrls = ctrls;
966 op->o_bd->bd_info = bi;
967 return SLAP_CB_CONTINUE;
971 ppolicy_bind( Operation *op, SlapReply *rs )
973 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
975 /* Reset lockout status on all Bind requests */
976 if ( !BER_BVISEMPTY( &pwcons[op->o_conn->c_conn_idx].dn )) {
977 ch_free( pwcons[op->o_conn->c_conn_idx].dn.bv_val );
978 BER_BVZERO( &pwcons[op->o_conn->c_conn_idx].dn );
981 /* Root bypasses policy */
982 if ( !be_isroot_dn( op->o_bd, &op->o_req_ndn )) {
988 op->o_bd->bd_info = (BackendInfo *)on->on_info;
989 rc = be_entry_get_rw( op, &op->o_req_ndn, NULL, NULL, 0, &e );
991 if ( rc != LDAP_SUCCESS ) {
992 return SLAP_CB_CONTINUE;
995 cb = op->o_tmpcalloc( sizeof(ppbind)+sizeof(slap_callback),
996 1, op->o_tmpmemctx );
997 ppb = (ppbind *)(cb+1);
999 ppb->pErr = PP_noError;
1001 /* Setup a callback so we can munge the result */
1003 cb->sc_response = ppolicy_bind_resp;
1004 cb->sc_next = op->o_callback->sc_next;
1005 cb->sc_private = ppb;
1006 op->o_callback->sc_next = cb;
1008 /* Did we receive a password policy request control? */
1009 if ( op->o_ctrlflag[ppolicy_cid] ) {
1013 op->o_bd->bd_info = (BackendInfo *)on;
1014 ppolicy_get( op, e, &ppb->pp );
1016 rc = account_locked( op, e, &ppb->pp, &ppb->mod );
1018 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1019 be_entry_release_r( op, e );
1022 /* This will be the Draft 8 response, Unwilling is bogus */
1023 ppb->pErr = PP_accountLocked;
1024 send_ldap_error( op, rs, LDAP_INVALID_CREDENTIALS, NULL );
1030 return SLAP_CB_CONTINUE;
1033 /* Reset the restricted info for the next session on this connection */
1035 ppolicy_connection_destroy( BackendDB *bd, Connection *conn )
1037 if ( !BER_BVISEMPTY( &pwcons[conn->c_conn_idx].dn )) {
1038 ch_free( pwcons[conn->c_conn_idx].dn.bv_val );
1039 BER_BVZERO( &pwcons[conn->c_conn_idx].dn );
1041 return SLAP_CB_CONTINUE;
1044 /* Check if this connection is restricted */
1050 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1053 /* Did we receive a password policy request control? */
1054 if ( op->o_ctrlflag[ppolicy_cid] ) {
1058 if ( op->o_conn && !BER_BVISEMPTY( &pwcons[op->o_conn->c_conn_idx].dn )) {
1059 /* if the current authcDN doesn't match the one we recorded,
1060 * then an intervening Bind has succeeded and the restriction
1061 * no longer applies. (ITS#4516)
1063 if ( !dn_match( &op->o_conn->c_ndn,
1064 &pwcons[op->o_conn->c_conn_idx].dn )) {
1065 ch_free( pwcons[op->o_conn->c_conn_idx].dn.bv_val );
1066 BER_BVZERO( &pwcons[op->o_conn->c_conn_idx].dn );
1067 return SLAP_CB_CONTINUE;
1070 Debug( LDAP_DEBUG_TRACE,
1071 "connection restricted to password changing only\n", 0, 0, 0);
1073 LDAPControl **ctrls = NULL;
1075 ctrls = ch_calloc( sizeof( LDAPControl *) , 2 );
1076 ctrls[0] = create_passcontrol( -1, -1, PP_changeAfterReset );
1078 rs->sr_ctrls = ctrls;
1080 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1081 send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS,
1082 "Operations are restricted to bind/unbind/abandon/StartTLS/modify password" );
1086 return SLAP_CB_CONTINUE;
1094 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1095 pp_info *pi = on->on_bi.bi_private;
1100 if ( ppolicy_restrict( op, rs ) != SLAP_CB_CONTINUE )
1103 /* If this is a replica, assume the master checked everything */
1104 if ( be_shadow_update( op ))
1105 return SLAP_CB_CONTINUE;
1107 /* Check for password in entry */
1108 if ((pa = attr_find( op->oq_add.rs_e->e_attrs,
1109 slap_schema.si_ad_userPassword )))
1112 * new entry contains a password - if we're not the root user
1113 * then we need to check that the password fits in with the
1114 * security policy for the new entry.
1116 ppolicy_get( op, op->ora_e, &pp );
1117 if (pp.pwdCheckQuality > 0 && !be_isroot( op )) {
1118 struct berval *bv = &(pa->a_vals[0]);
1119 int rc, send_ctrl = 0;
1120 LDAPPasswordPolicyError pErr = PP_noError;
1122 /* Did we receive a password policy request control? */
1123 if ( op->o_ctrlflag[ppolicy_cid] ) {
1126 rc = check_password_quality( bv, &pp, &pErr, op->ora_e );
1127 if (rc != LDAP_SUCCESS) {
1128 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1130 LDAPControl **ctrls = NULL;
1132 ctrls = ch_calloc( sizeof( LDAPControl *) , 2 );
1133 ctrls[0] = create_passcontrol( -1, -1, pErr );
1135 rs->sr_ctrls = ctrls;
1137 send_ldap_error( op, rs, rc, "Password fails quality checking policy" );
1142 * A controversial bit. We hash cleartext
1143 * passwords provided via add and modify operations
1144 * You're not really supposed to do this, since
1145 * the X.500 model says "store attributes" as they
1146 * get provided. By default, this is what we do
1148 * But if the hash_passwords flag is set, we hash
1149 * any cleartext password attribute values via the
1150 * default password hashing scheme.
1152 if ((pi->hash_passwords) &&
1153 (password_scheme( &(pa->a_vals[0]), NULL ) != LDAP_SUCCESS)) {
1156 slap_passwd_hash( &(pa->a_vals[0]), &hpw, &txt );
1157 if (hpw.bv_val == NULL) {
1159 * hashing didn't work. Emit an error.
1161 rs->sr_err = LDAP_OTHER;
1163 send_ldap_error( op, rs, LDAP_OTHER, "Password hashing failed" );
1167 memset( pa->a_vals[0].bv_val, 0, pa->a_vals[0].bv_len);
1168 ber_memfree( pa->a_vals[0].bv_val );
1169 pa->a_vals[0].bv_val = hpw.bv_val;
1170 pa->a_vals[0].bv_len = hpw.bv_len;
1173 /* If password aging is in effect, set the pwdChangedTime */
1174 if ( pp.pwdMaxAge || pp.pwdMinAge ) {
1175 struct berval timestamp;
1176 char timebuf[ LDAP_LUTIL_GENTIME_BUFSIZE ];
1177 time_t now = slap_get_time();
1179 timestamp.bv_val = timebuf;
1180 timestamp.bv_len = sizeof(timebuf);
1181 slap_timestamp( &now, ×tamp );
1183 attr_merge_one( op->ora_e, ad_pwdChangedTime, ×tamp, ×tamp );
1186 return SLAP_CB_CONTINUE;
1190 ppolicy_modify( Operation *op, SlapReply *rs )
1192 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1193 pp_info *pi = on->on_bi.bi_private;
1194 int i, rc, mod_pw_only, pwmod, pwmop = -1, deladd,
1197 Modifications *mods = NULL, *modtail = NULL,
1198 *ml, *delmod, *addmod;
1199 Attribute *pa, *ha, at;
1201 pw_hist *tl = NULL, *p;
1202 int zapReset, send_ctrl = 0;
1204 struct berval newpw = BER_BVNULL, oldpw = BER_BVNULL,
1206 LDAPPasswordPolicyError pErr = PP_noError;
1208 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1209 rc = be_entry_get_rw( op, &op->o_req_ndn, NULL, NULL, 0, &e );
1210 op->o_bd->bd_info = (BackendInfo *)on;
1212 if ( rc != LDAP_SUCCESS ) return SLAP_CB_CONTINUE;
1214 /* If this is a replica, we may need to tweak some of the
1215 * master's modifications. Otherwise, just pass it through.
1217 if ( be_shadow_update( op )) {
1218 Modifications **prev;
1219 int got_del_grace = 0, got_del_lock = 0, got_pw = 0, got_del_fail = 0;
1220 Attribute *a_grace, *a_lock, *a_fail;
1222 a_grace = attr_find( e->e_attrs, ad_pwdGraceUseTime );
1223 a_lock = attr_find( e->e_attrs, ad_pwdAccountLockedTime );
1224 a_fail = attr_find( e->e_attrs, ad_pwdFailureTime );
1226 for( prev = &op->oq_modify.rs_modlist, ml = *prev; ml; ml = *prev ) {
1228 if ( ml->sml_desc == slap_schema.si_ad_userPassword )
1231 /* If we're deleting an attr that didn't exist,
1232 * drop this delete op
1234 if ( ml->sml_op == LDAP_MOD_DELETE ) {
1237 if ( ml->sml_desc == ad_pwdGraceUseTime ) {
1242 if ( ml->sml_desc == ad_pwdAccountLockedTime ) {
1247 if ( ml->sml_desc == ad_pwdFailureTime ) {
1253 *prev = ml->sml_next;
1254 ml->sml_next = NULL;
1255 slap_mods_free( ml, 1 );
1259 prev = &ml->sml_next;
1262 /* If we're resetting the password, make sure grace, accountlock,
1263 * and failure also get removed.
1266 if ( a_grace && !got_del_grace ) {
1267 ml = (Modifications *) ch_malloc( sizeof( Modifications ) );
1268 ml->sml_op = LDAP_MOD_DELETE;
1269 ml->sml_flags = SLAP_MOD_INTERNAL;
1270 ml->sml_type.bv_val = NULL;
1271 ml->sml_desc = ad_pwdGraceUseTime;
1272 ml->sml_values = NULL;
1273 ml->sml_nvalues = NULL;
1274 ml->sml_next = NULL;
1276 prev = &ml->sml_next;
1278 if ( a_lock && !got_del_lock ) {
1279 ml = (Modifications *) ch_malloc( sizeof( Modifications ) );
1280 ml->sml_op = LDAP_MOD_DELETE;
1281 ml->sml_flags = SLAP_MOD_INTERNAL;
1282 ml->sml_type.bv_val = NULL;
1283 ml->sml_desc = ad_pwdAccountLockedTime;
1284 ml->sml_values = NULL;
1285 ml->sml_nvalues = NULL;
1286 ml->sml_next = NULL;
1289 if ( a_fail && !got_del_fail ) {
1290 ml = (Modifications *) ch_malloc( sizeof( Modifications ) );
1291 ml->sml_op = LDAP_MOD_DELETE;
1292 ml->sml_flags = SLAP_MOD_INTERNAL;
1293 ml->sml_type.bv_val = NULL;
1294 ml->sml_desc = ad_pwdFailureTime;
1295 ml->sml_values = NULL;
1296 ml->sml_nvalues = NULL;
1297 ml->sml_next = NULL;
1301 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1302 be_entry_release_r( op, e );
1303 return SLAP_CB_CONTINUE;
1306 /* Did we receive a password policy request control? */
1307 if ( op->o_ctrlflag[ppolicy_cid] ) {
1311 /* See if this is a pwdModify exop. If so, we can
1312 * access the plaintext passwords from that request.
1317 for ( sc = op->o_callback; sc; sc=sc->sc_next ) {
1318 if ( sc->sc_response == slap_replog_cb &&
1320 req_pwdexop_s *qpw = sc->sc_private;
1321 newpw = qpw->rs_new;
1322 oldpw = qpw->rs_old;
1328 ppolicy_get( op, e, &pp );
1330 for ( ml = op->oq_modify.rs_modlist,
1331 pwmod = 0, mod_pw_only = 1,
1332 deladd = 0, delmod = NULL,
1335 ml != NULL; modtail = ml, ml = ml->sml_next )
1337 if ( ml->sml_desc == pp.ad ) {
1340 if ((deladd == 0) && (ml->sml_op == LDAP_MOD_DELETE) &&
1341 (ml->sml_values) && (ml->sml_values[0].bv_val != NULL)) {
1346 if ((deladd == 1) && ((ml->sml_op == LDAP_MOD_ADD) ||
1347 (ml->sml_op == LDAP_MOD_REPLACE)))
1350 if ((ml->sml_op == LDAP_MOD_ADD) ||
1351 (ml->sml_op == LDAP_MOD_REPLACE))
1353 } else if (! is_at_operational( ml->sml_desc->ad_type )) {
1355 /* modifying something other than password */
1359 * If there is a request to explicitly add a pwdReset
1360 * attribute, then we suppress the normal behaviour on
1361 * password change, which is to remove the pwdReset
1364 * This enables an administrator to assign a new password
1365 * and place a "must reset" flag on the entry, which will
1366 * stay until the user explicitly changes his/her password.
1368 if (ml->sml_desc == ad_pwdReset ) {
1369 if ((ml->sml_op == LDAP_MOD_ADD) ||
1370 (ml->sml_op == LDAP_MOD_REPLACE))
1375 if (!BER_BVISEMPTY( &pwcons[op->o_conn->c_conn_idx].dn ) && !mod_pw_only ) {
1376 if ( dn_match( &op->o_conn->c_ndn,
1377 &pwcons[op->o_conn->c_conn_idx].dn )) {
1378 Debug( LDAP_DEBUG_TRACE,
1379 "connection restricted to password changing only\n", 0, 0, 0 );
1380 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
1381 rs->sr_text = "Operations are restricted to bind/unbind/abandon/StartTLS/modify password";
1382 pErr = PP_changeAfterReset;
1383 goto return_results;
1385 ch_free( pwcons[op->o_conn->c_conn_idx].dn.bv_val );
1386 BER_BVZERO( &pwcons[op->o_conn->c_conn_idx].dn );
1391 * if we have a "safe password modify policy", then we need to check if we're doing
1392 * a delete (with the old password), followed by an add (with the new password).
1394 * If we don't have this, then we fail with an error. We also skip all the checks if
1395 * the root user is bound. Root can do anything, including avoid the policies.
1398 if (!pwmod) goto do_modify;
1401 * Did we get a valid add mod?
1405 rs->sr_err = LDAP_OTHER;
1406 rs->sr_text = "Internal Error";
1407 Debug( LDAP_DEBUG_TRACE,
1408 "cannot locate modification supplying new password\n", 0, 0, 0 );
1409 goto return_results;
1413 * Build the password history list in ascending time order
1414 * We need this, even if the user is root, in order to maintain
1415 * the pwdHistory operational attributes properly.
1417 if (pp.pwdInHistory > 0 && (ha = attr_find( e->e_attrs, ad_pwdHistory ))) {
1418 struct berval oldpw;
1421 for(i=0; ha->a_nvals[i].bv_val; i++) {
1422 rc = parse_pwdhistory( &(ha->a_nvals[i]), NULL,
1425 if (rc != LDAP_SUCCESS) continue; /* invalid history entry */
1428 add_to_pwd_history( &tl, oldtime, &oldpw,
1429 &(ha->a_nvals[i]) );
1430 oldpw.bv_val = NULL;
1434 for(p=tl; p; p=p->next, hsize++); /* count history size */
1437 if (be_isroot( op )) goto do_modify;
1439 /* This is a pwdModify exop that provided the old pw.
1440 * We need to create a Delete mod for this old pw and
1441 * let the matching value get found later
1443 if (pp.pwdSafeModify && oldpw.bv_val ) {
1444 ml = (Modifications *) ch_malloc( sizeof( Modifications ) );
1445 ml->sml_op = LDAP_MOD_DELETE;
1446 ml->sml_flags = SLAP_MOD_INTERNAL;
1447 ml->sml_desc = pp.ad;
1448 ml->sml_type = pp.ad->ad_cname;
1449 ml->sml_values = (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
1450 ber_dupbv( &ml->sml_values[0], &oldpw );
1451 ml->sml_values[1].bv_len = 0;
1452 ml->sml_values[1].bv_val = NULL;
1453 ml->sml_nvalues = NULL;
1454 ml->sml_next = op->orm_modlist;
1455 op->orm_modlist = ml;
1460 if (pp.pwdSafeModify && deladd != 2) {
1461 Debug( LDAP_DEBUG_TRACE,
1462 "change password must use DELETE followed by ADD/REPLACE\n",
1464 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
1465 rs->sr_text = "Must supply old password to be changed as well as new one";
1466 pErr = PP_mustSupplyOldPassword;
1467 goto return_results;
1470 if (!pp.pwdAllowUserChange) {
1471 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
1472 rs->sr_text = "User alteration of password is not allowed";
1473 pErr = PP_passwordModNotAllowed;
1474 goto return_results;
1477 if (pp.pwdMinAge > 0) {
1478 time_t pwtime = (time_t)-1, now;
1481 if ((pa = attr_find( e->e_attrs, ad_pwdChangedTime )) != NULL)
1482 pwtime = parse_time( pa->a_nvals[0].bv_val );
1483 now = slap_get_time();
1484 age = (int)(now - pwtime);
1485 if ((pwtime != (time_t)-1) && (age < pp.pwdMinAge)) {
1486 rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
1487 rs->sr_text = "Password is too young to change";
1488 pErr = PP_passwordTooYoung;
1489 goto return_results;
1493 /* pa is used in password history check below, be sure it's set */
1494 if ((pa = attr_find( e->e_attrs, pp.ad )) != NULL && delmod) {
1496 * we have a password to check
1500 bv = oldpw.bv_val ? &oldpw : delmod->sml_values;
1501 /* FIXME: no access checking? */
1502 rc = slap_passwd_check( op, NULL, pa, bv, &txt );
1503 if (rc != LDAP_SUCCESS) {
1504 Debug( LDAP_DEBUG_TRACE,
1505 "old password check failed: %s\n", txt, 0, 0 );
1507 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1508 rs->sr_text = "Must supply correct old password to change to new one";
1509 pErr = PP_mustSupplyOldPassword;
1510 goto return_results;
1516 * replace the delete value with the (possibly hashed)
1517 * value which is currently in the password.
1519 for(i=0; delmod->sml_values[i].bv_val; i++) {
1520 free(delmod->sml_values[i].bv_val);
1521 delmod->sml_values[i].bv_len = 0;
1523 free(delmod->sml_values);
1524 delmod->sml_values = ch_calloc( sizeof(struct berval), 2 );
1525 delmod->sml_values[1].bv_len = 0;
1526 delmod->sml_values[1].bv_val = NULL;
1527 ber_dupbv(&(delmod->sml_values[0]), &(pa->a_nvals[0]));
1531 bv = newpw.bv_val ? &newpw : addmod->sml_values;
1532 if (pp.pwdCheckQuality > 0) {
1534 rc = check_password_quality( bv, &pp, &pErr, e );
1535 if (rc != LDAP_SUCCESS) {
1537 rs->sr_text = "Password fails quality checking policy";
1538 goto return_results;
1544 * Last check - the password history.
1546 /* FIXME: no access checking? */
1547 if (slap_passwd_check( op, NULL, pa, bv, &txt ) == LDAP_SUCCESS) {
1549 * This is bad - it means that the user is attempting
1550 * to set the password to the same as the old one.
1552 rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
1553 rs->sr_text = "Password is not being changed from existing value";
1554 pErr = PP_passwordInHistory;
1555 goto return_results;
1558 if (pp.pwdInHistory < 1) goto do_modify;
1561 * Iterate through the password history, and fail on any
1566 cr[1].bv_val = NULL;
1567 for(p=tl; p; p=p->next) {
1569 /* FIXME: no access checking? */
1570 rc = slap_passwd_check( op, NULL, &at, bv, &txt );
1572 if (rc != LDAP_SUCCESS) continue;
1574 rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
1575 rs->sr_text = "Password is in history of old passwords";
1576 pErr = PP_passwordInHistory;
1577 goto return_results;
1583 struct berval timestamp;
1584 char timebuf[ LDAP_LUTIL_GENTIME_BUFSIZE ];
1585 time_t now = slap_get_time();
1588 * keep the necessary pwd.. operational attributes
1592 timestamp.bv_val = timebuf;
1593 timestamp.bv_len = sizeof(timebuf);
1594 slap_timestamp( &now, ×tamp );
1596 mods = (Modifications *) ch_malloc( sizeof( Modifications ) );
1597 mods->sml_type.bv_val = NULL;
1598 mods->sml_desc = ad_pwdChangedTime;
1599 if (pwmop != LDAP_MOD_DELETE) {
1600 mods->sml_op = LDAP_MOD_REPLACE;
1601 mods->sml_values = (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
1602 mods->sml_nvalues = (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
1603 ber_dupbv( &mods->sml_values[0], ×tamp );
1604 ber_dupbv( &mods->sml_nvalues[0], ×tamp );
1605 mods->sml_values[1].bv_len = 0;
1606 mods->sml_values[1].bv_val = NULL;
1607 assert( mods->sml_values[0].bv_val != NULL );
1609 mods->sml_op = LDAP_MOD_DELETE;
1610 mods->sml_values = NULL;
1612 mods->sml_flags = SLAP_MOD_INTERNAL;
1613 mods->sml_nvalues = NULL;
1614 mods->sml_next = NULL;
1615 modtail->sml_next = mods;
1618 if (attr_find(e->e_attrs, ad_pwdGraceUseTime )) {
1619 mods = (Modifications *) ch_malloc( sizeof( Modifications ) );
1620 mods->sml_op = LDAP_MOD_DELETE;
1621 mods->sml_flags = SLAP_MOD_INTERNAL;
1622 mods->sml_type.bv_val = NULL;
1623 mods->sml_desc = ad_pwdGraceUseTime;
1624 mods->sml_values = NULL;
1625 mods->sml_nvalues = NULL;
1626 mods->sml_next = NULL;
1627 modtail->sml_next = mods;
1631 if (attr_find(e->e_attrs, ad_pwdAccountLockedTime )) {
1632 mods = (Modifications *) ch_malloc( sizeof( Modifications ) );
1633 mods->sml_op = LDAP_MOD_DELETE;
1634 mods->sml_flags = SLAP_MOD_INTERNAL;
1635 mods->sml_type.bv_val = NULL;
1636 mods->sml_desc = ad_pwdAccountLockedTime;
1637 mods->sml_values = NULL;
1638 mods->sml_nvalues = NULL;
1639 mods->sml_next = NULL;
1640 modtail->sml_next = mods;
1644 if (attr_find(e->e_attrs, ad_pwdFailureTime )) {
1645 mods = (Modifications *) ch_malloc( sizeof( Modifications ) );
1646 mods->sml_op = LDAP_MOD_DELETE;
1647 mods->sml_flags = SLAP_MOD_INTERNAL;
1648 mods->sml_type.bv_val = NULL;
1649 mods->sml_desc = ad_pwdFailureTime;
1650 mods->sml_values = NULL;
1651 mods->sml_nvalues = NULL;
1652 mods->sml_next = NULL;
1653 modtail->sml_next = mods;
1657 /* Delete the pwdReset attribute, since it's being reset */
1658 if ((zapReset) && (attr_find(e->e_attrs, ad_pwdReset ))) {
1659 mods = (Modifications *) ch_malloc( sizeof( Modifications ) );
1660 mods->sml_op = LDAP_MOD_DELETE;
1661 mods->sml_flags = SLAP_MOD_INTERNAL;
1662 mods->sml_type.bv_val = NULL;
1663 mods->sml_desc = ad_pwdReset;
1664 mods->sml_values = NULL;
1665 mods->sml_nvalues = NULL;
1666 mods->sml_next = NULL;
1667 modtail->sml_next = mods;
1671 if (pp.pwdInHistory > 0) {
1672 if (hsize >= pp.pwdInHistory) {
1674 * We use the >= operator, since we are going to add
1675 * the existing password attribute value into the
1676 * history - thus the cardinality of history values is
1677 * about to rise by one.
1679 * If this would push it over the limit of history
1680 * values (remembering - the password policy could have
1681 * changed since the password was last altered), we must
1682 * delete at least 1 value from the pwdHistory list.
1684 * In fact, we delete '(#pwdHistory attrs - max pwd
1685 * history length) + 1' values, starting with the oldest.
1686 * This is easily evaluated, since the linked list is
1687 * created in ascending time order.
1689 mods = (Modifications *) ch_malloc( sizeof( Modifications ) );
1690 mods->sml_op = LDAP_MOD_DELETE;
1691 mods->sml_flags = SLAP_MOD_INTERNAL;
1692 mods->sml_type.bv_val = NULL;
1693 mods->sml_desc = ad_pwdHistory;
1694 mods->sml_nvalues = NULL;
1695 mods->sml_values = ch_calloc( sizeof( struct berval ),
1696 hsize - pp.pwdInHistory + 2 );
1697 mods->sml_values[ hsize - pp.pwdInHistory + 1 ].bv_val = NULL;
1698 mods->sml_values[ hsize - pp.pwdInHistory + 1 ].bv_len = 0;
1699 for(i=0,p=tl; i < (hsize - pp.pwdInHistory + 1); i++, p=p->next) {
1700 mods->sml_values[i].bv_val = NULL;
1701 mods->sml_values[i].bv_len = 0;
1702 ber_dupbv( &(mods->sml_values[i]), &p->bv );
1704 mods->sml_next = NULL;
1705 modtail->sml_next = mods;
1708 free_pwd_history_list( &tl );
1711 * Now add the existing password into the history list.
1712 * This will be executed even if the operation is to delete
1713 * the password entirely.
1715 * This isn't in the spec explicitly, but it seems to make
1716 * sense that the password history list is the list of all
1717 * previous passwords - even if they were deleted. Thus, if
1718 * someone tries to add a historical password at some future
1719 * point, it will fail.
1721 if ((pa = attr_find( e->e_attrs, pp.ad )) != NULL) {
1722 mods = (Modifications *) ch_malloc( sizeof( Modifications ) );
1723 mods->sml_op = LDAP_MOD_ADD;
1724 mods->sml_flags = SLAP_MOD_INTERNAL;
1725 mods->sml_type.bv_val = NULL;
1726 mods->sml_desc = ad_pwdHistory;
1727 mods->sml_nvalues = NULL;
1728 mods->sml_values = ch_calloc( sizeof( struct berval ), 2 );
1729 mods->sml_values[ 1 ].bv_val = NULL;
1730 mods->sml_values[ 1 ].bv_len = 0;
1731 make_pwd_history_value( timebuf, &mods->sml_values[0], pa );
1732 mods->sml_next = NULL;
1733 modtail->sml_next = mods;
1736 Debug( LDAP_DEBUG_TRACE,
1737 "ppolicy_modify: password attr lookup failed\n", 0, 0, 0 );
1742 * Controversial bit here. If the new password isn't hashed
1743 * (ie, is cleartext), we probably should hash it according
1744 * to the default hash. The reason for this is that we want
1745 * to use the policy if possible, but if we hash the password
1746 * before, then we're going to run into trouble when it
1747 * comes time to check the password.
1749 * Now, the right thing to do is to use the extended password
1750 * modify operation, but not all software can do this,
1751 * therefore it makes sense to hash the new password, now
1752 * we know it passes the policy requirements.
1754 * Of course, if the password is already hashed, then we
1758 if ((pi->hash_passwords) && (addmod) && !newpw.bv_val &&
1759 (password_scheme( &(addmod->sml_values[0]), NULL ) != LDAP_SUCCESS)) {
1760 struct berval hpw, bv;
1762 slap_passwd_hash( &(addmod->sml_values[0]), &hpw, &txt );
1763 if (hpw.bv_val == NULL) {
1765 * hashing didn't work. Emit an error.
1767 rs->sr_err = LDAP_OTHER;
1769 goto return_results;
1771 bv.bv_val = addmod->sml_values[0].bv_val;
1772 bv.bv_len = addmod->sml_values[0].bv_len;
1773 /* clear and discard the clear password */
1774 memset(bv.bv_val, 0, bv.bv_len);
1775 ber_memfree(bv.bv_val);
1776 addmod->sml_values[0].bv_val = hpw.bv_val;
1777 addmod->sml_values[0].bv_len = hpw.bv_len;
1780 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1781 be_entry_release_r( op, e );
1782 return SLAP_CB_CONTINUE;
1785 free_pwd_history_list( &tl );
1786 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1787 be_entry_release_r( op, e );
1789 LDAPControl **ctrls = NULL;
1791 ctrls = ch_calloc( sizeof( LDAPControl *) , 2 );
1792 ctrls[0] = create_passcontrol( -1, -1, pErr );
1794 rs->sr_ctrls = ctrls;
1796 send_ldap_result( op, rs );
1806 if ( ctrl->ldctl_value.bv_len ) {
1807 rs->sr_text = "passwordPolicyRequest control value not empty";
1808 return LDAP_PROTOCOL_ERROR;
1810 if ( ctrl->ldctl_iscritical ) {
1811 rs->sr_text = "passwordPolicyRequest control invalid criticality";
1812 return LDAP_PROTOCOL_ERROR;
1814 op->o_ctrlflag[ppolicy_cid] = SLAP_CONTROL_NONCRITICAL;
1816 return LDAP_SUCCESS;
1826 AttributeDescription *ad = NULL;
1830 code = slap_bv2ad( val, &ad, &err );
1832 ber_dupbv_x( out, &ad->ad_type->sat_cname, ctx );
1846 AttributeDescription *ad = NULL;
1850 code = slap_bv2ad( val, &ad, &err );
1852 ber_str2bv_x( ad->ad_type->sat_oid, 0, 1, out, ctx );
1862 slap_overinst *on = (slap_overinst *) be->bd_info;
1864 /* Has User Schema been initialized yet? */
1865 if ( !pwd_UsSchema[0].ad[0] ) {
1869 for (i=0; pwd_UsSchema[i].def; i++) {
1870 code = slap_str2ad( pwd_UsSchema[i].def, pwd_UsSchema[i].ad, &err );
1872 fprintf( stderr, "User Schema Load failed %d: %s\n", code, err );
1880 syn = ch_malloc( sizeof( Syntax ));
1881 *syn = *ad_pwdAttribute->ad_type->sat_syntax;
1882 syn->ssyn_pretty = attrPretty;
1883 ad_pwdAttribute->ad_type->sat_syntax = syn;
1885 mr = ch_malloc( sizeof( MatchingRule ));
1886 *mr = *ad_pwdAttribute->ad_type->sat_equality;
1887 mr->smr_normalize = attrNormalize;
1888 ad_pwdAttribute->ad_type->sat_equality = mr;
1892 on->on_bi.bi_private = ch_calloc( sizeof(pp_info), 1 );
1894 if ( dtblsize && !pwcons )
1895 pwcons = ch_calloc(sizeof(pw_conn), dtblsize );
1905 return overlay_register_control( be, LDAP_CONTROL_PASSWORDPOLICYREQUEST );
1913 slap_overinst *on = (slap_overinst *) be->bd_info;
1914 pp_info *pi = on->on_bi.bi_private;
1917 free( pi->def_policy.bv_val );
1932 slap_overinst *on = (slap_overinst *) be->bd_info;
1933 pp_info *pi = on->on_bi.bi_private;
1937 if ( strcasecmp( argv[0], "ppolicy_default" ) == 0 ) {
1939 fprintf( stderr, "%s: line %d: invalid arguments in \"ppolicy_default"
1940 " <policyDN>\n", fname, lineno );
1943 ber_str2bv( argv[1], 0, 0, &dn );
1944 if ( dnNormalize( 0, NULL, NULL, &dn, &pi->def_policy, NULL ) ) {
1945 fprintf( stderr, "%s: line %d: policyDN is invalid\n",
1951 } else if ( strcasecmp( argv[0], "ppolicy_use_lockout" ) == 0 ) {
1953 fprintf( stderr, "%s: line %d: ppolicy_use_lockout "
1954 "takes no arguments\n", fname, lineno );
1957 pi->use_lockout = 1;
1959 } else if ( strcasecmp( argv[0], "ppolicy_hash_cleartext" ) == 0 ) {
1961 fprintf( stderr, "%s: line %d: ppolicy_hash_cleartext "
1962 "takes no arguments\n", fname, lineno );
1965 pi->hash_passwords = 1;
1968 return SLAP_CONF_UNKNOWN;
1971 static char *extops[] = {
1972 LDAP_EXOP_MODIFY_PASSWD,
1976 static slap_overinst ppolicy;
1978 int ppolicy_initialize()
1980 LDAPAttributeType *at;
1984 for (i=0; pwd_OpSchema[i].def; i++) {
1985 at = ldap_str2attributetype( pwd_OpSchema[i].def, &code, &err,
1986 LDAP_SCHEMA_ALLOW_ALL );
1988 fprintf( stderr, "AttributeType Load failed %s %s\n",
1989 ldap_scherr2str(code), err );
1992 code = at_add( at, 0, NULL, &err );
1994 slap_str2ad( at->at_names[0], pwd_OpSchema[i].ad, &err );
1998 fprintf( stderr, "AttributeType Load failed %s %s\n",
1999 scherr2str(code), err );
2002 /* Allow Manager to set these as needed */
2003 if ( is_at_no_user_mod( (*pwd_OpSchema[i].ad)->ad_type )) {
2004 (*pwd_OpSchema[i].ad)->ad_type->sat_flags |=
2009 code = register_supported_control( LDAP_CONTROL_PASSWORDPOLICYREQUEST,
2010 SLAP_CTRL_ADD|SLAP_CTRL_BIND|SLAP_CTRL_MODIFY|SLAP_CTRL_HIDE, extops,
2011 ppolicy_parseCtrl, &ppolicy_cid );
2012 if ( code != LDAP_SUCCESS ) {
2013 fprintf( stderr, "Failed to register control %d\n", code );
2017 ldap_pvt_thread_mutex_init( &chk_syntax_mutex );
2019 ppolicy.on_bi.bi_type = "ppolicy";
2020 ppolicy.on_bi.bi_db_init = ppolicy_db_init;
2021 ppolicy.on_bi.bi_db_open = ppolicy_db_open;
2022 ppolicy.on_bi.bi_db_config = ppolicy_config;
2023 ppolicy.on_bi.bi_db_close = ppolicy_close;
2025 ppolicy.on_bi.bi_op_add = ppolicy_add;
2026 ppolicy.on_bi.bi_op_bind = ppolicy_bind;
2027 ppolicy.on_bi.bi_op_compare = ppolicy_restrict;
2028 ppolicy.on_bi.bi_op_delete = ppolicy_restrict;
2029 ppolicy.on_bi.bi_op_modify = ppolicy_modify;
2030 ppolicy.on_bi.bi_op_search = ppolicy_restrict;
2031 ppolicy.on_bi.bi_connection_destroy = ppolicy_connection_destroy;
2033 return overlay_register( &ppolicy );
2036 #if SLAPD_OVER_PPOLICY == SLAPD_MOD_DYNAMIC
2037 int init_module(int argc, char *argv[]) {
2038 return ppolicy_initialize();
2042 #endif /* defined(SLAPD_OVER_PPOLICY) */