2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
4 * Copyright 2004-2007 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>
44 #ifndef MODULE_NAME_SZ
45 #define MODULE_NAME_SZ 256
48 /* Per-instance configuration information */
49 typedef struct pp_info {
50 struct berval def_policy; /* DN of default policy subentry */
51 int use_lockout; /* send AccountLocked result? */
52 int hash_passwords; /* transparently hash cleartext pwds */
55 /* Our per-connection info - note, it is not per-instance, it is
56 * used by all instances
58 typedef struct pw_conn {
59 struct berval dn; /* DN of restricted user */
62 static pw_conn *pwcons;
63 static int ppolicy_cid;
65 typedef struct pass_policy {
66 AttributeDescription *ad; /* attribute to which the policy applies */
67 int pwdMinAge; /* minimum time (seconds) until passwd can change */
68 int pwdMaxAge; /* time in seconds until pwd will expire after change */
69 int pwdInHistory; /* number of previous passwords kept */
70 int pwdCheckQuality; /* 0 = don't check quality, 1 = check if possible,
71 2 = check mandatory; fail if not possible */
72 int pwdMinLength; /* minimum number of chars in password */
73 int pwdExpireWarning; /* number of seconds that warning controls are
74 sent before a password expires */
75 int pwdGraceAuthNLimit; /* number of times you can log in with an
77 int pwdLockout; /* 0 = do not lockout passwords, 1 = lock them out */
78 int pwdLockoutDuration; /* time in seconds a password is locked out for */
79 int pwdMaxFailure; /* number of failed binds allowed before lockout */
80 int pwdFailureCountInterval; /* number of seconds before failure
82 int pwdMustChange; /* 0 = users can use admin set password
83 1 = users must change password after admin set */
84 int pwdAllowUserChange; /* 0 = users cannot change their passwords
85 1 = users can change them */
86 int pwdSafeModify; /* 0 = old password doesn't need to come
87 with password change request
88 1 = password change must supply existing pwd */
89 char pwdCheckModule[MODULE_NAME_SZ]; /* name of module to dynamically
90 load to check password */
93 typedef struct pw_hist {
94 time_t t; /* timestamp of history entry */
95 struct berval pw; /* old password hash */
96 struct berval bv; /* text of entire entry */
100 /* Operational attributes */
101 static AttributeDescription *ad_pwdChangedTime, *ad_pwdAccountLockedTime,
102 *ad_pwdFailureTime, *ad_pwdHistory, *ad_pwdGraceUseTime, *ad_pwdReset,
103 *ad_pwdPolicySubentry;
105 static struct schema_info {
107 AttributeDescription **ad;
109 { "( 1.3.6.1.4.1.42.2.27.8.1.16 "
110 "NAME ( 'pwdChangedTime' ) "
111 "DESC 'The time the password was last changed' "
112 "EQUALITY generalizedTimeMatch "
113 "ORDERING generalizedTimeOrderingMatch "
114 "SYNTAX 1.3.6.1.4.1.1466.115.121.1.24 "
115 "SINGLE-VALUE NO-USER-MODIFICATION USAGE directoryOperation )",
116 &ad_pwdChangedTime },
117 { "( 1.3.6.1.4.1.42.2.27.8.1.17 "
118 "NAME ( 'pwdAccountLockedTime' ) "
119 "DESC 'The time an user account was locked' "
120 "EQUALITY generalizedTimeMatch "
121 "ORDERING generalizedTimeOrderingMatch "
122 "SYNTAX 1.3.6.1.4.1.1466.115.121.1.24 "
125 /* Not until Relax control is released */
126 "NO-USER-MODIFICATION "
128 "USAGE directoryOperation )",
129 &ad_pwdAccountLockedTime },
130 { "( 1.3.6.1.4.1.42.2.27.8.1.19 "
131 "NAME ( 'pwdFailureTime' ) "
132 "DESC 'The timestamps of the last consecutive authentication failures' "
133 "EQUALITY generalizedTimeMatch "
134 "ORDERING generalizedTimeOrderingMatch "
135 "SYNTAX 1.3.6.1.4.1.1466.115.121.1.24 "
136 "NO-USER-MODIFICATION USAGE directoryOperation )",
137 &ad_pwdFailureTime },
138 { "( 1.3.6.1.4.1.42.2.27.8.1.20 "
139 "NAME ( 'pwdHistory' ) "
140 "DESC 'The history of users passwords' "
141 "EQUALITY octetStringMatch "
142 "SYNTAX 1.3.6.1.4.1.1466.115.121.1.40 "
143 "NO-USER-MODIFICATION USAGE directoryOperation )",
145 { "( 1.3.6.1.4.1.42.2.27.8.1.21 "
146 "NAME ( 'pwdGraceUseTime' ) "
147 "DESC 'The timestamps of the grace login once the password has expired' "
148 "EQUALITY generalizedTimeMatch "
149 "SYNTAX 1.3.6.1.4.1.1466.115.121.1.24 "
150 "NO-USER-MODIFICATION USAGE directoryOperation )",
151 &ad_pwdGraceUseTime },
152 { "( 1.3.6.1.4.1.42.2.27.8.1.22 "
153 "NAME ( 'pwdReset' ) "
154 "DESC 'The indication that the password has been reset' "
155 "EQUALITY booleanMatch "
156 "SYNTAX 1.3.6.1.4.1.1466.115.121.1.7 "
157 "SINGLE-VALUE USAGE directoryOperation )",
159 { "( 1.3.6.1.4.1.42.2.27.8.1.23 "
160 "NAME ( 'pwdPolicySubentry' ) "
161 "DESC 'The pwdPolicy subentry in effect for this object' "
162 "EQUALITY distinguishedNameMatch "
163 "SYNTAX 1.3.6.1.4.1.1466.115.121.1.12 "
166 /* Not until Relax control is released */
167 "NO-USER-MODIFICATION "
169 "USAGE directoryOperation )",
170 &ad_pwdPolicySubentry },
174 /* User attributes */
175 static AttributeDescription *ad_pwdMinAge, *ad_pwdMaxAge, *ad_pwdInHistory,
176 *ad_pwdCheckQuality, *ad_pwdMinLength, *ad_pwdMaxFailure,
177 *ad_pwdGraceAuthNLimit, *ad_pwdExpireWarning, *ad_pwdLockoutDuration,
178 *ad_pwdFailureCountInterval, *ad_pwdCheckModule, *ad_pwdLockout,
179 *ad_pwdMustChange, *ad_pwdAllowUserChange, *ad_pwdSafeModify,
182 #define TAB(name) { #name, &ad_##name }
184 static struct schema_info pwd_UsSchema[] = {
189 TAB(pwdCheckQuality),
192 TAB(pwdGraceAuthNLimit),
193 TAB(pwdExpireWarning),
195 TAB(pwdLockoutDuration),
196 TAB(pwdFailureCountInterval),
199 TAB(pwdAllowUserChange),
204 static ldap_pvt_thread_mutex_t chk_syntax_mutex;
208 PPOLICY_HASH_CLEARTEXT,
212 static ConfigDriver ppolicy_cf_default;
214 static ConfigTable ppolicycfg[] = {
215 { "ppolicy_default", "policyDN", 2, 2, 0,
216 ARG_DN|ARG_MAGIC|PPOLICY_DEFAULT, ppolicy_cf_default,
217 "( OLcfgOvAt:12.1 NAME 'olcPPolicyDefault' "
218 "DESC 'DN of a pwdPolicy object for uncustomized objects' "
219 "SYNTAX OMsDN SINGLE-VALUE )", NULL, NULL },
220 { "ppolicy_hash_cleartext", "on|off", 1, 2, 0,
221 ARG_ON_OFF|ARG_OFFSET|PPOLICY_HASH_CLEARTEXT,
222 (void *)offsetof(pp_info,hash_passwords),
223 "( OLcfgOvAt:12.2 NAME 'olcPPolicyHashCleartext' "
224 "DESC 'Hash passwords on add or modify' "
225 "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
226 { "ppolicy_use_lockout", "on|off", 1, 2, 0,
227 ARG_ON_OFF|ARG_OFFSET|PPOLICY_USE_LOCKOUT,
228 (void *)offsetof(pp_info,use_lockout),
229 "( OLcfgOvAt:12.3 NAME 'olcPPolicyUseLockout' "
230 "DESC 'Warn clients with AccountLocked' "
231 "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
232 { NULL, NULL, 0, 0, 0, ARG_IGNORED }
235 static ConfigOCs ppolicyocs[] = {
236 { "( OLcfgOvOc:12.1 "
237 "NAME 'olcPPolicyConfig' "
238 "DESC 'Password Policy configuration' "
239 "SUP olcOverlayConfig "
240 "MAY ( olcPPolicyDefault $ olcPPolicyHashCleartext $ "
241 "olcPPolicyUseLockout ) )",
242 Cft_Overlay, ppolicycfg },
247 ppolicy_cf_default( ConfigArgs *c )
249 slap_overinst *on = (slap_overinst *)c->bi;
250 pp_info *pi = (pp_info *)on->on_bi.bi_private;
251 int rc = ARG_BAD_CONF;
253 assert ( c->type == PPOLICY_DEFAULT );
254 Debug(LDAP_DEBUG_TRACE, "==> ppolicy_cf_default\n", 0, 0, 0);
257 case SLAP_CONFIG_EMIT:
258 Debug(LDAP_DEBUG_TRACE, "==> ppolicy_cf_default emit\n", 0, 0, 0);
260 if ( !BER_BVISEMPTY( &pi->def_policy )) {
261 rc = value_add_one( &c->rvalue_vals,
264 rc = value_add_one( &c->rvalue_nvals,
268 case LDAP_MOD_DELETE:
269 Debug(LDAP_DEBUG_TRACE, "==> ppolicy_cf_default delete\n", 0, 0, 0);
270 if ( pi->def_policy.bv_val ) {
271 ber_memfree ( pi->def_policy.bv_val );
272 pi->def_policy.bv_val = NULL;
274 pi->def_policy.bv_len = 0;
277 case SLAP_CONFIG_ADD:
278 /* fallthrough to LDAP_MOD_ADD */
280 Debug(LDAP_DEBUG_TRACE, "==> ppolicy_cf_default add\n", 0, 0, 0);
281 if ( pi->def_policy.bv_val ) {
282 ber_memfree ( pi->def_policy.bv_val );
284 pi->def_policy = c->value_ndn;
285 ber_memfree( c->value_dn.bv_val );
286 BER_BVZERO( &c->value_dn );
287 BER_BVZERO( &c->value_ndn );
298 parse_time( char *atm )
301 struct lutil_timet tt;
302 time_t ret = (time_t)-1;
304 if ( lutil_parsetime( atm, &tm ) == 0) {
305 lutil_tm2time( &tm, &tt );
312 account_locked( Operation *op, Entry *e,
313 PassPolicy *pp, Modifications **mod )
319 if ( (la = attr_find( e->e_attrs, ad_pwdAccountLockedTime )) != NULL ) {
320 BerVarray vals = la->a_nvals;
323 * there is a lockout stamp - we now need to know if it's
326 if (vals[0].bv_val != NULL) {
330 if (!pp->pwdLockoutDuration)
333 if ((then = parse_time( vals[0].bv_val )) == (time_t)0)
336 now = slap_get_time();
338 if (now < then + pp->pwdLockoutDuration)
341 m = ch_calloc( sizeof(Modifications), 1 );
342 m->sml_op = LDAP_MOD_DELETE;
344 m->sml_type = ad_pwdAccountLockedTime->ad_cname;
345 m->sml_desc = ad_pwdAccountLockedTime;
354 /* IMPLICIT TAGS, all context-specific */
355 #define PPOLICY_WARNING 0xa0L /* constructed + 0 */
356 #define PPOLICY_ERROR 0x81L /* primitive + 1 */
358 #define PPOLICY_EXPIRE 0x80L /* primitive + 0 */
359 #define PPOLICY_GRACE 0x81L /* primitive + 1 */
361 static const char ppolicy_ctrl_oid[] = LDAP_CONTROL_PASSWORDPOLICYRESPONSE;
364 create_passcontrol( int exptime, int grace, LDAPPasswordPolicyError err )
366 char berbuf[LBER_ELEMENT_SIZEOF], bb2[LBER_ELEMENT_SIZEOF];
367 BerElement *ber = (BerElement *)berbuf, *b2 = (BerElement *)bb2;
371 c = ch_calloc( sizeof( LDAPControl ), 1 );
375 c->ldctl_oid = (char *)ppolicy_ctrl_oid;
376 c->ldctl_iscritical = 0;
377 BER_BVZERO( &c->ldctl_value );
379 ber_init2( ber, NULL, LBER_USE_DER );
380 ber_printf( ber, "{" /*}*/ );
382 if ( exptime >= 0 ) {
383 ber_init2( b2, NULL, LBER_USE_DER );
384 ber_printf( b2, "ti", PPOLICY_EXPIRE, exptime );
385 ber_flatten2( b2, &bv, 1 );
386 (void)ber_free_buf(b2);
387 ber_printf( ber, "tO", PPOLICY_WARNING, &bv );
388 ch_free( bv.bv_val );
389 } else if ( grace > 0 ) {
390 ber_init2( b2, NULL, LBER_USE_DER );
391 ber_printf( b2, "ti", PPOLICY_GRACE, grace );
392 ber_flatten2( b2, &bv, 1 );
393 (void)ber_free_buf(b2);
394 ber_printf( ber, "tO", PPOLICY_WARNING, &bv );
395 ch_free( bv.bv_val );
398 if (err != PP_noError ) {
399 ber_printf( ber, "te", PPOLICY_ERROR, err );
401 ber_printf( ber, /*{*/ "N}" );
403 if (ber_flatten2( ber, &(c->ldctl_value), 1 ) == LBER_DEFAULT) {
407 (void)ber_free_buf(ber);
411 static LDAPControl **
412 add_passcontrol( Operation *op, SlapReply *rs, LDAPControl *ctrl )
414 LDAPControl **ctrls, **oldctrls = rs->sr_ctrls;
419 for ( ; oldctrls[n]; n++ )
424 ctrls = op->o_tmpcalloc( sizeof( LDAPControl * ), n, op->o_tmpmemctx );
428 for ( ; oldctrls[n]; n++ ) {
429 ctrls[n] = oldctrls[n];
435 rs->sr_ctrls = ctrls;
441 ppolicy_get( Operation *op, Entry *e, PassPolicy *pp )
443 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
444 pp_info *pi = on->on_bi.bi_private;
453 memset( pp, 0, sizeof(PassPolicy) );
455 pp->ad = slap_schema.si_ad_userPassword;
457 /* Users can change their own password by default */
458 pp->pwdAllowUserChange = 1;
460 if ((a = attr_find( e->e_attrs, ad_pwdPolicySubentry )) == NULL) {
462 * entry has no password policy assigned - use default
464 vals = &pi->def_policy;
469 if (vals[0].bv_val == NULL) {
470 Debug( LDAP_DEBUG_ANY,
471 "ppolicy_get: NULL value for policySubEntry\n", 0, 0, 0 );
476 op->o_bd->bd_info = (BackendInfo *)on->on_info;
477 rc = be_entry_get_rw( op, vals, NULL, NULL, 0, &pe );
478 op->o_bd->bd_info = (BackendInfo *)on;
480 if ( rc ) goto defaultpol;
482 #if 0 /* Only worry about userPassword for now */
483 if ((a = attr_find( pe->e_attrs, ad_pwdAttribute )))
484 slap_bv2ad( &a->a_vals[0], &pp->ad, &text );
487 if ( ( a = attr_find( pe->e_attrs, ad_pwdMinAge ) )
488 && lutil_atoi( &pp->pwdMinAge, a->a_vals[0].bv_val ) != 0 )
490 if ( ( a = attr_find( pe->e_attrs, ad_pwdMaxAge ) )
491 && lutil_atoi( &pp->pwdMaxAge, a->a_vals[0].bv_val ) != 0 )
493 if ( ( a = attr_find( pe->e_attrs, ad_pwdInHistory ) )
494 && lutil_atoi( &pp->pwdInHistory, a->a_vals[0].bv_val ) != 0 )
496 if ( ( a = attr_find( pe->e_attrs, ad_pwdCheckQuality ) )
497 && lutil_atoi( &pp->pwdCheckQuality, a->a_vals[0].bv_val ) != 0 )
499 if ( ( a = attr_find( pe->e_attrs, ad_pwdMinLength ) )
500 && lutil_atoi( &pp->pwdMinLength, a->a_vals[0].bv_val ) != 0 )
502 if ( ( a = attr_find( pe->e_attrs, ad_pwdMaxFailure ) )
503 && lutil_atoi( &pp->pwdMaxFailure, a->a_vals[0].bv_val ) != 0 )
505 if ( ( a = attr_find( pe->e_attrs, ad_pwdGraceAuthNLimit ) )
506 && lutil_atoi( &pp->pwdGraceAuthNLimit, a->a_vals[0].bv_val ) != 0 )
508 if ( ( a = attr_find( pe->e_attrs, ad_pwdExpireWarning ) )
509 && lutil_atoi( &pp->pwdExpireWarning, a->a_vals[0].bv_val ) != 0 )
511 if ( ( a = attr_find( pe->e_attrs, ad_pwdFailureCountInterval ) )
512 && lutil_atoi( &pp->pwdFailureCountInterval, a->a_vals[0].bv_val ) != 0 )
514 if ( ( a = attr_find( pe->e_attrs, ad_pwdLockoutDuration ) )
515 && lutil_atoi( &pp->pwdLockoutDuration, a->a_vals[0].bv_val ) != 0 )
518 if ( ( a = attr_find( pe->e_attrs, ad_pwdCheckModule ) ) ) {
519 strncpy( pp->pwdCheckModule, a->a_vals[0].bv_val,
520 sizeof(pp->pwdCheckModule) );
521 pp->pwdCheckModule[sizeof(pp->pwdCheckModule)-1] = '\0';
524 if ((a = attr_find( pe->e_attrs, ad_pwdLockout )))
525 pp->pwdLockout = bvmatch( &a->a_nvals[0], &slap_true_bv );
526 if ((a = attr_find( pe->e_attrs, ad_pwdMustChange )))
527 pp->pwdMustChange = bvmatch( &a->a_nvals[0], &slap_true_bv );
528 if ((a = attr_find( pe->e_attrs, ad_pwdAllowUserChange )))
529 pp->pwdAllowUserChange = bvmatch( &a->a_nvals[0], &slap_true_bv );
530 if ((a = attr_find( pe->e_attrs, ad_pwdSafeModify )))
531 pp->pwdSafeModify = bvmatch( &a->a_nvals[0], &slap_true_bv );
533 op->o_bd->bd_info = (BackendInfo *)on->on_info;
534 be_entry_release_r( op, pe );
535 op->o_bd->bd_info = (BackendInfo *)on;
540 Debug( LDAP_DEBUG_TRACE,
541 "ppolicy_get: using default policy\n", 0, 0, 0 );
546 password_scheme( struct berval *cred, struct berval *sch )
550 assert( cred != NULL );
557 if ((cred->bv_len == 0) || (cred->bv_val == NULL) ||
558 (cred->bv_val[0] != '{')) return LDAP_OTHER;
560 for(e = 1; cred->bv_val[e] && cred->bv_val[e] != '}'; e++);
561 if (cred->bv_val[e]) {
563 rc = lutil_passwd_scheme( cred->bv_val );
566 sch->bv_val = cred->bv_val;
576 check_password_quality( struct berval *cred, PassPolicy *pp, LDAPPasswordPolicyError *err, Entry *e )
578 int rc = LDAP_SUCCESS, ok = LDAP_SUCCESS;
579 char *ptr = cred->bv_val;
582 assert( cred != NULL );
583 assert( pp != NULL );
585 if ((cred->bv_len == 0) || (pp->pwdMinLength > cred->bv_len)) {
586 rc = LDAP_CONSTRAINT_VIOLATION;
587 if ( err ) *err = PP_passwordTooShort;
592 * We need to know if the password is already hashed - if so
593 * what scheme is it. The reason being that the "hash" of
594 * {cleartext} still allows us to check the password.
596 rc = password_scheme( cred, &sch );
597 if (rc == LDAP_SUCCESS) {
598 if ((sch.bv_val) && (strncasecmp( sch.bv_val, "{cleartext}",
599 sch.bv_len ) == 0)) {
601 * We can check the cleartext "hash"
603 ptr = cred->bv_val + sch.bv_len;
605 /* everything else, we can't check */
606 if (pp->pwdCheckQuality == 2) {
607 rc = LDAP_CONSTRAINT_VIOLATION;
608 if (err) *err = PP_insufficientPasswordQuality;
612 * We can't check the syntax of the password, but it's not
613 * mandatory (according to the policy), so we return success.
622 if (pp->pwdCheckModule[0]) {
627 if ((mod = lt_dlopen( pp->pwdCheckModule )) == NULL) {
630 Debug(LDAP_DEBUG_ANY,
631 "check_password_quality: lt_dlopen failed: (%s) %s.\n",
632 pp->pwdCheckModule, err, 0 );
633 ok = LDAP_OTHER; /* internal error */
635 int (*prog)( char *passwd, char **text, Entry *ent );
637 if ((prog = lt_dlsym( mod, "check_password" )) == NULL) {
640 Debug(LDAP_DEBUG_ANY,
641 "check_password_quality: lt_dlsym failed: (%s) %s.\n",
642 pp->pwdCheckModule, err, 0 );
647 ldap_pvt_thread_mutex_lock( &chk_syntax_mutex );
648 ok = prog( cred->bv_val, &txt, e );
649 ldap_pvt_thread_mutex_unlock( &chk_syntax_mutex );
650 if (ok != LDAP_SUCCESS) {
651 Debug(LDAP_DEBUG_ANY,
652 "check_password_quality: module error: (%s) %s.[%d]\n",
653 pp->pwdCheckModule, txt ? txt : "", ok );
661 Debug(LDAP_DEBUG_ANY, "check_password_quality: external modules not "
662 "supported. pwdCheckModule ignored.\n", 0, 0, 0);
663 #endif /* SLAPD_MODULES */
667 if (ok != LDAP_SUCCESS) {
668 rc = LDAP_CONSTRAINT_VIOLATION;
669 if (err) *err = PP_insufficientPasswordQuality;
676 parse_pwdhistory( struct berval *bv, char **oid, time_t *oldtime, struct berval *oldpw )
679 struct berval nv, npw;
682 assert (bv && (bv->bv_len > 0) && (bv->bv_val) && oldtime && oldpw );
687 *oldtime = (time_t)-1;
690 ber_dupbv( &nv, bv );
692 /* first get the time field */
693 for ( i = 0; (i < nv.bv_len) && (nv.bv_val[i] != '#'); i++ )
695 if ( i == nv.bv_len ) {
696 goto exit_failure; /* couldn't locate the '#' separator */
698 nv.bv_val[i++] = '\0'; /* terminate the string & move to next field */
700 *oldtime = parse_time( ptr );
701 if (*oldtime == (time_t)-1) {
705 /* get the OID field */
706 for (ptr = &(nv.bv_val[i]); (i < nv.bv_len) && (nv.bv_val[i] != '#'); i++ )
708 if ( i == nv.bv_len ) {
709 goto exit_failure; /* couldn't locate the '#' separator */
711 nv.bv_val[i++] = '\0'; /* terminate the string & move to next field */
713 *oid = ber_strdup( ptr );
716 /* get the length field */
717 for ( ptr = &(nv.bv_val[i]); (i < nv.bv_len) && (nv.bv_val[i] != '#'); i++ )
719 if ( i == nv.bv_len ) {
720 goto exit_failure; /* couldn't locate the '#' separator */
722 nv.bv_val[i++] = '\0'; /* terminate the string & move to next field */
723 oldpw->bv_len = strtol( ptr, NULL, 10 );
724 if (errno == ERANGE) {
728 /* lastly, get the octets of the string */
729 for ( j = i, ptr = &(nv.bv_val[i]); i < nv.bv_len; i++ )
731 if ( i - j != oldpw->bv_len) {
732 goto exit_failure; /* length is wrong */
736 npw.bv_len = oldpw->bv_len;
737 ber_dupbv( oldpw, &npw );
738 ber_memfree( nv.bv_val );
747 if ( oldpw->bv_val ) {
748 ber_memfree( oldpw->bv_val);
751 ber_memfree( nv.bv_val );
757 add_to_pwd_history( pw_hist **l, time_t t,
758 struct berval *oldpw, struct berval *bv )
760 pw_hist *p, *p1, *p2;
764 p = ch_malloc( sizeof( pw_hist ));
766 ber_dupbv( &p->bv, bv );
771 /* degenerate case */
776 * advance p1 and p2 such that p1 is the node before the
777 * new one, and p2 is the node after it
779 for (p1 = NULL, p2 = *l; p2 && p2->t <= t; p1 = p2, p2=p2->next );
781 if (p1 == NULL) { *l = p; return; }
785 #ifndef MAX_PWD_HISTORY_SZ
786 #define MAX_PWD_HISTORY_SZ 1024
787 #endif /* MAX_PWD_HISTORY_SZ */
790 make_pwd_history_value( char *timebuf, struct berval *bv, Attribute *pa )
792 char str[ MAX_PWD_HISTORY_SZ ];
795 snprintf( str, MAX_PWD_HISTORY_SZ,
796 "%s#%s#%lu#", timebuf,
797 pa->a_desc->ad_type->sat_syntax->ssyn_oid,
798 (unsigned long) pa->a_nvals[0].bv_len );
799 str[MAX_PWD_HISTORY_SZ-1] = 0;
803 * We have to assume that the string is a string of octets,
804 * not readable characters. In reality, yes, it probably is
805 * a readable (ie, base64) string, but we can't count on that
806 * Hence, while the first 3 fields of the password history
807 * are definitely readable (a timestamp, an OID and an integer
808 * length), the remaining octets of the actual password
809 * are deemed to be binary data.
811 AC_MEMCPY( str + nlen, pa->a_nvals[0].bv_val, pa->a_nvals[0].bv_len );
812 nlen += pa->a_nvals[0].bv_len;
813 bv->bv_val = ch_malloc( nlen + 1 );
814 AC_MEMCPY( bv->bv_val, str, nlen );
815 bv->bv_val[nlen] = '\0';
820 free_pwd_history_list( pw_hist **l )
827 pw_hist *pp = p->next;
837 typedef struct ppbind {
840 LDAPControl **oldctrls;
842 LDAPPasswordPolicyError pErr;
847 ctrls_cleanup( Operation *op, SlapReply *rs, LDAPControl **oldctrls )
851 assert( rs->sr_ctrls != NULL );
852 assert( rs->sr_ctrls[0] != NULL );
854 for ( n = 0; rs->sr_ctrls[n]; n++ ) {
855 if ( rs->sr_ctrls[n]->ldctl_oid == ppolicy_ctrl_oid ) {
856 ch_free( rs->sr_ctrls[n]->ldctl_value.bv_val );
857 ch_free( rs->sr_ctrls[n] );
858 rs->sr_ctrls[n] = (LDAPControl *)(-1);
863 if ( rs->sr_ctrls[n] == NULL ) {
867 op->o_tmpfree( rs->sr_ctrls, op->o_tmpmemctx );
869 rs->sr_ctrls = oldctrls;
873 ppolicy_ctrls_cleanup( Operation *op, SlapReply *rs )
875 ppbind *ppb = op->o_callback->sc_private;
876 if ( ppb->send_ctrl ) {
877 ctrls_cleanup( op, rs, ppb->oldctrls );
879 return SLAP_CB_CONTINUE;
883 ppolicy_bind_response( Operation *op, SlapReply *rs )
885 ppbind *ppb = op->o_callback->sc_private;
886 slap_overinst *on = ppb->on;
887 Modifications *mod = ppb->mod, *m;
889 int ngut = -1, warn = -1, age, rc;
891 time_t now, pwtime = (time_t)-1;
892 char nowstr[ LDAP_LUTIL_GENTIME_BUFSIZE ];
893 struct berval timestamp;
894 BackendInfo *bi = op->o_bd->bd_info;
897 /* If we already know it's locked, just get on with it */
898 if ( ppb->pErr != PP_noError ) {
902 op->o_bd->bd_info = (BackendInfo *)on->on_info;
903 rc = be_entry_get_rw( op, &op->o_req_ndn, NULL, NULL, 0, &e );
904 op->o_bd->bd_info = bi;
906 if ( rc != LDAP_SUCCESS ) {
907 return SLAP_CB_CONTINUE;
910 now = slap_get_time(); /* stored for later consideration */
911 timestamp.bv_val = nowstr;
912 timestamp.bv_len = sizeof(nowstr);
913 slap_timestamp( &now, ×tamp );
915 if ( rs->sr_err == LDAP_INVALID_CREDENTIALS ) {
918 m = ch_calloc( sizeof(Modifications), 1 );
919 m->sml_op = LDAP_MOD_ADD;
921 m->sml_type = ad_pwdFailureTime->ad_cname;
922 m->sml_desc = ad_pwdFailureTime;
923 m->sml_values = ch_calloc( sizeof(struct berval), 2 );
924 m->sml_nvalues = ch_calloc( sizeof(struct berval), 2 );
926 ber_dupbv( &m->sml_values[0], ×tamp );
927 ber_dupbv( &m->sml_nvalues[0], ×tamp );
932 * Count the pwdFailureTimes - if it's
933 * greater than the policy pwdMaxFailure,
934 * then lock the account.
936 if ((a = attr_find( e->e_attrs, ad_pwdFailureTime )) != NULL) {
937 for(i=0; a->a_nvals[i].bv_val; i++) {
940 * If the interval is 0, then failures
941 * stay on the record until explicitly
942 * reset by successful authentication.
944 if (ppb->pp.pwdFailureCountInterval == 0) {
947 parse_time(a->a_nvals[i].bv_val) +
948 ppb->pp.pwdFailureCountInterval) {
953 * We only count those failures
954 * which are not due to expire.
959 if ((ppb->pp.pwdMaxFailure > 0) &&
960 (fc >= ppb->pp.pwdMaxFailure - 1)) {
963 * We subtract 1 from the failure max
964 * because the new failure entry hasn't
965 * made it to the entry yet.
967 m = ch_calloc( sizeof(Modifications), 1 );
968 m->sml_op = LDAP_MOD_REPLACE;
970 m->sml_type = ad_pwdAccountLockedTime->ad_cname;
971 m->sml_desc = ad_pwdAccountLockedTime;
972 m->sml_values = ch_calloc( sizeof(struct berval), 2 );
973 m->sml_nvalues = ch_calloc( sizeof(struct berval), 2 );
974 ber_dupbv( &m->sml_values[0], ×tamp );
975 ber_dupbv( &m->sml_nvalues[0], ×tamp );
979 } else if ( rs->sr_err == LDAP_SUCCESS ) {
980 if ((a = attr_find( e->e_attrs, ad_pwdChangedTime )) != NULL)
981 pwtime = parse_time( a->a_nvals[0].bv_val );
983 /* delete all pwdFailureTimes */
984 if ( attr_find( e->e_attrs, ad_pwdFailureTime )) {
985 m = ch_calloc( sizeof(Modifications), 1 );
986 m->sml_op = LDAP_MOD_DELETE;
988 m->sml_type = ad_pwdFailureTime->ad_cname;
989 m->sml_desc = ad_pwdFailureTime;
995 * check to see if the password must be changed
997 if ( ppb->pp.pwdMustChange &&
998 (a = attr_find( e->e_attrs, ad_pwdReset )) &&
999 bvmatch( &a->a_nvals[0], &slap_true_bv ) )
1002 * need to inject client controls here to give
1003 * more information. For the moment, we ensure
1004 * that we are disallowed from doing anything
1005 * other than change password.
1007 ber_dupbv( &pwcons[op->o_conn->c_conn_idx].dn,
1008 &op->o_conn->c_ndn );
1010 ppb->pErr = PP_changeAfterReset;
1014 * the password does not need to be changed, so
1015 * we now check whether the password has expired.
1017 * We can skip this bit if passwords don't age in
1018 * the policy. Also, if there was no pwdChangedTime
1019 * attribute in the entry, the password never expires.
1021 if (ppb->pp.pwdMaxAge == 0) goto grace;
1023 if (pwtime != (time_t)-1) {
1025 * Check: was the last change time of
1026 * the password older than the maximum age
1027 * allowed. (Ignore case 2 from I-D, it's just silly.)
1029 if (now - pwtime > ppb->pp.pwdMaxAge ) pwExpired = 1;
1034 if (!pwExpired) goto check_expiring_password;
1036 if ((a = attr_find( e->e_attrs, ad_pwdGraceUseTime )) == NULL)
1037 ngut = ppb->pp.pwdGraceAuthNLimit;
1039 for(ngut=0; a->a_nvals[ngut].bv_val; ngut++);
1040 ngut = ppb->pp.pwdGraceAuthNLimit - ngut;
1044 * ngut is the number of remaining grace logins
1046 Debug( LDAP_DEBUG_ANY,
1047 "ppolicy_bind: Entry %s has an expired password: %d grace logins\n",
1048 e->e_name.bv_val, ngut, 0);
1051 ppb->pErr = PP_passwordExpired;
1052 rs->sr_err = LDAP_INVALID_CREDENTIALS;
1057 * Add a grace user time to the entry
1059 m = ch_calloc( sizeof(Modifications), 1 );
1060 m->sml_op = LDAP_MOD_ADD;
1062 m->sml_type = ad_pwdGraceUseTime->ad_cname;
1063 m->sml_desc = ad_pwdGraceUseTime;
1064 m->sml_values = ch_calloc( sizeof(struct berval), 2 );
1065 m->sml_nvalues = ch_calloc( sizeof(struct berval), 2 );
1066 ber_dupbv( &m->sml_values[0], ×tamp );
1067 ber_dupbv( &m->sml_nvalues[0], ×tamp );
1071 check_expiring_password:
1073 * Now we need to check to see
1074 * if it is about to expire, and if so, should the user
1075 * be warned about it in the password policy control.
1077 * If the password has expired, and we're in the grace period, then
1078 * we don't need to do this bit. Similarly, if we don't have password
1079 * aging, then there's no need to do this bit either.
1081 if ((ppb->pp.pwdMaxAge < 1) || (pwExpired) || (ppb->pp.pwdExpireWarning < 1))
1084 age = (int)(now - pwtime);
1087 * We know that there is a password Change Time attribute - if
1088 * there wasn't, then the pwdExpired value would be true, unless
1089 * there is no password aging - and if there is no password aging,
1090 * then this section isn't called anyway - you can't have an
1091 * expiring password if there's no limit to expire.
1093 if (ppb->pp.pwdMaxAge - age < ppb->pp.pwdExpireWarning ) {
1095 * Set the warning value.
1097 warn = ppb->pp.pwdMaxAge - age; /* seconds left until expiry */
1098 if (warn < 0) warn = 0; /* something weird here - why is pwExpired not set? */
1100 Debug( LDAP_DEBUG_ANY,
1101 "ppolicy_bind: Setting warning for password expiry for %s = %d seconds\n",
1102 op->o_req_dn.bv_val, warn, 0 );
1107 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1108 be_entry_release_r( op, e );
1112 Operation op2 = *op;
1113 SlapReply r2 = { REP_RESULT };
1114 slap_callback cb = { NULL, slap_null_cb, NULL, NULL };
1116 /* FIXME: Need to handle replication of some (but not all)
1117 * of the operational attributes...
1119 op2.o_tag = LDAP_REQ_MODIFY;
1120 op2.o_callback = &cb;
1121 op2.orm_modlist = mod;
1122 op2.o_dn = op->o_bd->be_rootdn;
1123 op2.o_ndn = op->o_bd->be_rootndn;
1124 op2.o_bd->bd_info = (BackendInfo *)on->on_info;
1125 rc = op->o_bd->be_modify( &op2, &r2 );
1126 slap_mods_free( mod, 1 );
1129 if ( ppb->send_ctrl ) {
1130 LDAPControl *ctrl = NULL;
1131 pp_info *pi = on->on_bi.bi_private;
1133 /* Do we really want to tell that the account is locked? */
1134 if ( ppb->pErr == PP_accountLocked && !pi->use_lockout ) {
1135 ppb->pErr = PP_noError;
1137 ctrl = create_passcontrol( warn, ngut, ppb->pErr );
1138 ppb->oldctrls = add_passcontrol( op, rs, ctrl );
1139 op->o_callback->sc_cleanup = ppolicy_ctrls_cleanup;
1141 op->o_bd->bd_info = bi;
1142 return SLAP_CB_CONTINUE;
1146 ppolicy_bind( Operation *op, SlapReply *rs )
1148 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1150 /* Reset lockout status on all Bind requests */
1151 if ( !BER_BVISEMPTY( &pwcons[op->o_conn->c_conn_idx].dn )) {
1152 ch_free( pwcons[op->o_conn->c_conn_idx].dn.bv_val );
1153 BER_BVZERO( &pwcons[op->o_conn->c_conn_idx].dn );
1156 /* Root bypasses policy */
1157 if ( !be_isroot_dn( op->o_bd, &op->o_req_ndn )) {
1163 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1164 rc = be_entry_get_rw( op, &op->o_req_ndn, NULL, NULL, 0, &e );
1166 if ( rc != LDAP_SUCCESS ) {
1167 return SLAP_CB_CONTINUE;
1170 cb = op->o_tmpcalloc( sizeof(ppbind)+sizeof(slap_callback),
1171 1, op->o_tmpmemctx );
1172 ppb = (ppbind *)(cb+1);
1174 ppb->pErr = PP_noError;
1176 /* Setup a callback so we can munge the result */
1178 cb->sc_response = ppolicy_bind_response;
1179 cb->sc_next = op->o_callback->sc_next;
1180 cb->sc_private = ppb;
1181 op->o_callback->sc_next = cb;
1183 /* Did we receive a password policy request control? */
1184 if ( op->o_ctrlflag[ppolicy_cid] ) {
1188 op->o_bd->bd_info = (BackendInfo *)on;
1189 ppolicy_get( op, e, &ppb->pp );
1191 rc = account_locked( op, e, &ppb->pp, &ppb->mod );
1193 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1194 be_entry_release_r( op, e );
1197 /* This will be the Draft 8 response, Unwilling is bogus */
1198 ppb->pErr = PP_accountLocked;
1199 send_ldap_error( op, rs, LDAP_INVALID_CREDENTIALS, NULL );
1205 return SLAP_CB_CONTINUE;
1208 /* Reset the restricted info for the next session on this connection */
1210 ppolicy_connection_destroy( BackendDB *bd, Connection *conn )
1212 if ( !BER_BVISEMPTY( &pwcons[conn->c_conn_idx].dn )) {
1213 ch_free( pwcons[conn->c_conn_idx].dn.bv_val );
1214 BER_BVZERO( &pwcons[conn->c_conn_idx].dn );
1216 return SLAP_CB_CONTINUE;
1219 /* Check if this connection is restricted */
1225 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1228 /* Did we receive a password policy request control? */
1229 if ( op->o_ctrlflag[ppolicy_cid] ) {
1233 if ( op->o_conn && !BER_BVISEMPTY( &pwcons[op->o_conn->c_conn_idx].dn )) {
1234 LDAPControl **oldctrls;
1235 /* if the current authcDN doesn't match the one we recorded,
1236 * then an intervening Bind has succeeded and the restriction
1237 * no longer applies. (ITS#4516)
1239 if ( !dn_match( &op->o_conn->c_ndn,
1240 &pwcons[op->o_conn->c_conn_idx].dn )) {
1241 ch_free( pwcons[op->o_conn->c_conn_idx].dn.bv_val );
1242 BER_BVZERO( &pwcons[op->o_conn->c_conn_idx].dn );
1243 return SLAP_CB_CONTINUE;
1246 Debug( LDAP_DEBUG_TRACE,
1247 "connection restricted to password changing only\n", 0, 0, 0);
1249 LDAPControl *ctrl = NULL;
1250 ctrl = create_passcontrol( -1, -1, PP_changeAfterReset );
1251 oldctrls = add_passcontrol( op, rs, ctrl );
1253 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1254 send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS,
1255 "Operations are restricted to bind/unbind/abandon/StartTLS/modify password" );
1257 ctrls_cleanup( op, rs, oldctrls );
1262 return SLAP_CB_CONTINUE;
1270 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1271 pp_info *pi = on->on_bi.bi_private;
1276 if ( ppolicy_restrict( op, rs ) != SLAP_CB_CONTINUE )
1279 /* If this is a replica, assume the master checked everything */
1280 if ( be_shadow_update( op ))
1281 return SLAP_CB_CONTINUE;
1283 /* Check for password in entry */
1284 if ((pa = attr_find( op->oq_add.rs_e->e_attrs,
1285 slap_schema.si_ad_userPassword )))
1287 assert( pa->a_vals != NULL );
1288 assert( !BER_BVISNULL( &pa->a_vals[ 0 ] ) );
1290 if ( !BER_BVISNULL( &pa->a_vals[ 1 ] ) ) {
1291 send_ldap_error( op, rs, LDAP_CONSTRAINT_VIOLATION, "Password policy only allows one password value" );
1296 * new entry contains a password - if we're not the root user
1297 * then we need to check that the password fits in with the
1298 * security policy for the new entry.
1300 ppolicy_get( op, op->ora_e, &pp );
1301 if (pp.pwdCheckQuality > 0 && !be_isroot( op )) {
1302 struct berval *bv = &(pa->a_vals[0]);
1303 int rc, send_ctrl = 0;
1304 LDAPPasswordPolicyError pErr = PP_noError;
1306 /* Did we receive a password policy request control? */
1307 if ( op->o_ctrlflag[ppolicy_cid] ) {
1310 rc = check_password_quality( bv, &pp, &pErr, op->ora_e );
1311 if (rc != LDAP_SUCCESS) {
1312 LDAPControl **oldctrls = NULL;
1313 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1315 LDAPControl *ctrl = NULL;
1316 ctrl = create_passcontrol( -1, -1, pErr );
1317 oldctrls = add_passcontrol( op, rs, ctrl );
1319 send_ldap_error( op, rs, rc, "Password fails quality checking policy" );
1321 ctrls_cleanup( op, rs, oldctrls );
1327 * A controversial bit. We hash cleartext
1328 * passwords provided via add and modify operations
1329 * You're not really supposed to do this, since
1330 * the X.500 model says "store attributes" as they
1331 * get provided. By default, this is what we do
1333 * But if the hash_passwords flag is set, we hash
1334 * any cleartext password attribute values via the
1335 * default password hashing scheme.
1337 if ((pi->hash_passwords) &&
1338 (password_scheme( &(pa->a_vals[0]), NULL ) != LDAP_SUCCESS)) {
1341 slap_passwd_hash( &(pa->a_vals[0]), &hpw, &txt );
1342 if (hpw.bv_val == NULL) {
1344 * hashing didn't work. Emit an error.
1346 rs->sr_err = LDAP_OTHER;
1348 send_ldap_error( op, rs, LDAP_OTHER, "Password hashing failed" );
1352 memset( pa->a_vals[0].bv_val, 0, pa->a_vals[0].bv_len);
1353 ber_memfree( pa->a_vals[0].bv_val );
1354 pa->a_vals[0].bv_val = hpw.bv_val;
1355 pa->a_vals[0].bv_len = hpw.bv_len;
1358 /* If password aging is in effect, set the pwdChangedTime */
1359 if ( pp.pwdMaxAge || pp.pwdMinAge ) {
1360 struct berval timestamp;
1361 char timebuf[ LDAP_LUTIL_GENTIME_BUFSIZE ];
1362 time_t now = slap_get_time();
1364 timestamp.bv_val = timebuf;
1365 timestamp.bv_len = sizeof(timebuf);
1366 slap_timestamp( &now, ×tamp );
1368 attr_merge_one( op->ora_e, ad_pwdChangedTime, ×tamp, ×tamp );
1371 return SLAP_CB_CONTINUE;
1375 ppolicy_mod_cb( Operation *op, SlapReply *rs )
1377 slap_callback *sc = op->o_callback;
1378 op->o_callback = sc->sc_next;
1379 if ( rs->sr_err == LDAP_SUCCESS ) {
1380 ch_free( pwcons[op->o_conn->c_conn_idx].dn.bv_val );
1381 BER_BVZERO( &pwcons[op->o_conn->c_conn_idx].dn );
1383 op->o_tmpfree( sc, op->o_tmpmemctx );
1384 return SLAP_CB_CONTINUE;
1388 ppolicy_modify( Operation *op, SlapReply *rs )
1390 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1391 pp_info *pi = on->on_bi.bi_private;
1392 int i, rc, mod_pw_only, pwmod, pwmop = -1, deladd,
1395 Modifications *mods = NULL, *modtail = NULL,
1396 *ml, *delmod, *addmod;
1397 Attribute *pa, *ha, at;
1399 pw_hist *tl = NULL, *p;
1400 int zapReset, send_ctrl = 0;
1402 struct berval newpw = BER_BVNULL, oldpw = BER_BVNULL,
1404 LDAPPasswordPolicyError pErr = PP_noError;
1405 LDAPControl **oldctrls = NULL;
1407 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1408 rc = be_entry_get_rw( op, &op->o_req_ndn, NULL, NULL, 0, &e );
1409 op->o_bd->bd_info = (BackendInfo *)on;
1411 if ( rc != LDAP_SUCCESS ) return SLAP_CB_CONTINUE;
1413 /* If this is a replica, we may need to tweak some of the
1414 * master's modifications. Otherwise, just pass it through.
1416 if ( be_shadow_update( op )) {
1417 Modifications **prev;
1418 int got_del_grace = 0, got_del_lock = 0, got_pw = 0, got_del_fail = 0;
1419 Attribute *a_grace, *a_lock, *a_fail;
1421 a_grace = attr_find( e->e_attrs, ad_pwdGraceUseTime );
1422 a_lock = attr_find( e->e_attrs, ad_pwdAccountLockedTime );
1423 a_fail = attr_find( e->e_attrs, ad_pwdFailureTime );
1425 for( prev = &op->orm_modlist, ml = *prev; ml; ml = *prev ) {
1427 if ( ml->sml_desc == slap_schema.si_ad_userPassword )
1430 /* If we're deleting an attr that didn't exist,
1431 * drop this delete op
1433 if ( ml->sml_op == LDAP_MOD_DELETE ) {
1436 if ( ml->sml_desc == ad_pwdGraceUseTime ) {
1441 if ( ml->sml_desc == ad_pwdAccountLockedTime ) {
1446 if ( ml->sml_desc == ad_pwdFailureTime ) {
1452 *prev = ml->sml_next;
1453 ml->sml_next = NULL;
1454 slap_mods_free( ml, 1 );
1458 prev = &ml->sml_next;
1461 /* If we're resetting the password, make sure grace, accountlock,
1462 * and failure also get removed.
1465 if ( a_grace && !got_del_grace ) {
1466 ml = (Modifications *) ch_malloc( sizeof( Modifications ) );
1467 ml->sml_op = LDAP_MOD_DELETE;
1468 ml->sml_flags = SLAP_MOD_INTERNAL;
1469 ml->sml_type.bv_val = NULL;
1470 ml->sml_desc = ad_pwdGraceUseTime;
1471 ml->sml_values = NULL;
1472 ml->sml_nvalues = NULL;
1473 ml->sml_next = NULL;
1475 prev = &ml->sml_next;
1477 if ( a_lock && !got_del_lock ) {
1478 ml = (Modifications *) ch_malloc( sizeof( Modifications ) );
1479 ml->sml_op = LDAP_MOD_DELETE;
1480 ml->sml_flags = SLAP_MOD_INTERNAL;
1481 ml->sml_type.bv_val = NULL;
1482 ml->sml_desc = ad_pwdAccountLockedTime;
1483 ml->sml_values = NULL;
1484 ml->sml_nvalues = NULL;
1485 ml->sml_next = NULL;
1488 if ( a_fail && !got_del_fail ) {
1489 ml = (Modifications *) ch_malloc( sizeof( Modifications ) );
1490 ml->sml_op = LDAP_MOD_DELETE;
1491 ml->sml_flags = SLAP_MOD_INTERNAL;
1492 ml->sml_type.bv_val = NULL;
1493 ml->sml_desc = ad_pwdFailureTime;
1494 ml->sml_values = NULL;
1495 ml->sml_nvalues = NULL;
1496 ml->sml_next = NULL;
1500 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1501 be_entry_release_r( op, e );
1502 return SLAP_CB_CONTINUE;
1505 /* Did we receive a password policy request control? */
1506 if ( op->o_ctrlflag[ppolicy_cid] ) {
1510 /* See if this is a pwdModify exop. If so, we can
1511 * access the plaintext passwords from that request.
1516 for ( sc = op->o_callback; sc; sc=sc->sc_next ) {
1517 if ( sc->sc_response == slap_null_cb &&
1519 req_pwdexop_s *qpw = sc->sc_private;
1520 newpw = qpw->rs_new;
1521 oldpw = qpw->rs_old;
1527 ppolicy_get( op, e, &pp );
1529 for ( ml = op->orm_modlist,
1530 pwmod = 0, mod_pw_only = 1,
1531 deladd = 0, delmod = NULL,
1534 ml != NULL; modtail = ml, ml = ml->sml_next )
1536 if ( ml->sml_desc == pp.ad ) {
1539 if ((deladd == 0) && (ml->sml_op == LDAP_MOD_DELETE) &&
1540 (ml->sml_values) && !BER_BVISNULL( &ml->sml_values[0] ))
1546 if ((deladd == 1) && ((ml->sml_op == LDAP_MOD_ADD) ||
1547 (ml->sml_op == LDAP_MOD_REPLACE)))
1552 if ((ml->sml_op == LDAP_MOD_ADD) ||
1553 (ml->sml_op == LDAP_MOD_REPLACE))
1557 /* FIXME: there's no easy way to ensure
1558 * that add does not cause multiple
1559 * userPassword values; one way (that
1560 * would be consistent with the single
1561 * password constraint) would be to turn
1562 * add into replace); another would be
1565 * Let's check at least that a single value
1568 assert( addmod->sml_values != NULL );
1569 assert( !BER_BVISNULL( &addmod->sml_values[ 0 ] ) );
1570 if ( !BER_BVISNULL( &addmod->sml_values[ 1 ] ) ) {
1571 rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
1572 rs->sr_text = "Password policy only allows one password value";
1573 goto return_results;
1577 } else if ( !is_at_operational( ml->sml_desc->ad_type ) ) {
1579 /* modifying something other than password */
1583 * If there is a request to explicitly add a pwdReset
1584 * attribute, then we suppress the normal behaviour on
1585 * password change, which is to remove the pwdReset
1588 * This enables an administrator to assign a new password
1589 * and place a "must reset" flag on the entry, which will
1590 * stay until the user explicitly changes his/her password.
1592 if (ml->sml_desc == ad_pwdReset ) {
1593 if ((ml->sml_op == LDAP_MOD_ADD) ||
1594 (ml->sml_op == LDAP_MOD_REPLACE))
1599 if (!BER_BVISEMPTY( &pwcons[op->o_conn->c_conn_idx].dn ) && !mod_pw_only ) {
1600 if ( dn_match( &op->o_conn->c_ndn,
1601 &pwcons[op->o_conn->c_conn_idx].dn )) {
1602 Debug( LDAP_DEBUG_TRACE,
1603 "connection restricted to password changing only\n", 0, 0, 0 );
1604 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
1605 rs->sr_text = "Operations are restricted to bind/unbind/abandon/StartTLS/modify password";
1606 pErr = PP_changeAfterReset;
1607 goto return_results;
1609 ch_free( pwcons[op->o_conn->c_conn_idx].dn.bv_val );
1610 BER_BVZERO( &pwcons[op->o_conn->c_conn_idx].dn );
1615 * if we have a "safe password modify policy", then we need to check if we're doing
1616 * a delete (with the old password), followed by an add (with the new password).
1618 * If we don't have this, then we fail with an error. We also skip all the checks if
1619 * the root user is bound. Root can do anything, including avoid the policies.
1622 if (!pwmod) goto do_modify;
1625 * Did we get a valid add mod?
1629 rs->sr_err = LDAP_OTHER;
1630 rs->sr_text = "Internal Error";
1631 Debug( LDAP_DEBUG_TRACE,
1632 "cannot locate modification supplying new password\n", 0, 0, 0 );
1633 goto return_results;
1637 * Build the password history list in ascending time order
1638 * We need this, even if the user is root, in order to maintain
1639 * the pwdHistory operational attributes properly.
1641 if (pp.pwdInHistory > 0 && (ha = attr_find( e->e_attrs, ad_pwdHistory ))) {
1642 struct berval oldpw;
1645 for(i=0; ha->a_nvals[i].bv_val; i++) {
1646 rc = parse_pwdhistory( &(ha->a_nvals[i]), NULL,
1649 if (rc != LDAP_SUCCESS) continue; /* invalid history entry */
1652 add_to_pwd_history( &tl, oldtime, &oldpw,
1653 &(ha->a_nvals[i]) );
1654 oldpw.bv_val = NULL;
1658 for(p=tl; p; p=p->next, hsize++); /* count history size */
1661 if (be_isroot( op )) goto do_modify;
1663 /* This is a pwdModify exop that provided the old pw.
1664 * We need to create a Delete mod for this old pw and
1665 * let the matching value get found later
1667 if (pp.pwdSafeModify && oldpw.bv_val ) {
1668 ml = (Modifications *)ch_calloc( sizeof( Modifications ), 1 );
1669 ml->sml_op = LDAP_MOD_DELETE;
1670 ml->sml_flags = SLAP_MOD_INTERNAL;
1671 ml->sml_desc = pp.ad;
1672 ml->sml_type = pp.ad->ad_cname;
1673 ml->sml_values = (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
1674 ber_dupbv( &ml->sml_values[0], &oldpw );
1675 BER_BVZERO( &ml->sml_values[1] );
1676 ml->sml_next = op->orm_modlist;
1677 op->orm_modlist = ml;
1682 if (pp.pwdSafeModify && deladd != 2) {
1683 Debug( LDAP_DEBUG_TRACE,
1684 "change password must use DELETE followed by ADD/REPLACE\n",
1686 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
1687 rs->sr_text = "Must supply old password to be changed as well as new one";
1688 pErr = PP_mustSupplyOldPassword;
1689 goto return_results;
1692 if (!pp.pwdAllowUserChange) {
1693 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
1694 rs->sr_text = "User alteration of password is not allowed";
1695 pErr = PP_passwordModNotAllowed;
1696 goto return_results;
1699 /* Check age, but only if pwdReset is not TRUE */
1700 pa = attr_find( e->e_attrs, ad_pwdReset );
1701 if ((!pa || !bvmatch( &pa->a_nvals[0], &slap_true_bv )) &&
1703 time_t pwtime = (time_t)-1, now;
1706 if ((pa = attr_find( e->e_attrs, ad_pwdChangedTime )) != NULL)
1707 pwtime = parse_time( pa->a_nvals[0].bv_val );
1708 now = slap_get_time();
1709 age = (int)(now - pwtime);
1710 if ((pwtime != (time_t)-1) && (age < pp.pwdMinAge)) {
1711 rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
1712 rs->sr_text = "Password is too young to change";
1713 pErr = PP_passwordTooYoung;
1714 goto return_results;
1718 /* pa is used in password history check below, be sure it's set */
1719 if ((pa = attr_find( e->e_attrs, pp.ad )) != NULL && delmod) {
1721 * we have a password to check
1725 bv = oldpw.bv_val ? &oldpw : delmod->sml_values;
1726 /* FIXME: no access checking? */
1727 rc = slap_passwd_check( op, NULL, pa, bv, &txt );
1728 if (rc != LDAP_SUCCESS) {
1729 Debug( LDAP_DEBUG_TRACE,
1730 "old password check failed: %s\n", txt, 0, 0 );
1732 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1733 rs->sr_text = "Must supply correct old password to change to new one";
1734 pErr = PP_mustSupplyOldPassword;
1735 goto return_results;
1741 * replace the delete value with the (possibly hashed)
1742 * value which is currently in the password.
1744 for ( i = 0; !BER_BVISNULL( &delmod->sml_values[i] ); i++ ) {
1745 free( delmod->sml_values[i].bv_val );
1746 BER_BVZERO( &delmod->sml_values[i] );
1748 free( delmod->sml_values );
1749 delmod->sml_values = ch_calloc( sizeof(struct berval), 2 );
1750 BER_BVZERO( &delmod->sml_values[1] );
1751 ber_dupbv( &(delmod->sml_values[0]), &(pa->a_nvals[0]) );
1755 bv = newpw.bv_val ? &newpw : &addmod->sml_values[0];
1756 if (pp.pwdCheckQuality > 0) {
1758 rc = check_password_quality( bv, &pp, &pErr, e );
1759 if (rc != LDAP_SUCCESS) {
1761 rs->sr_text = "Password fails quality checking policy";
1762 goto return_results;
1768 * Last check - the password history.
1770 /* FIXME: no access checking? */
1771 if (slap_passwd_check( op, NULL, pa, bv, &txt ) == LDAP_SUCCESS) {
1773 * This is bad - it means that the user is attempting
1774 * to set the password to the same as the old one.
1776 rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
1777 rs->sr_text = "Password is not being changed from existing value";
1778 pErr = PP_passwordInHistory;
1779 goto return_results;
1782 if (pp.pwdInHistory < 1) goto do_modify;
1785 * Iterate through the password history, and fail on any
1790 cr[1].bv_val = NULL;
1791 for(p=tl; p; p=p->next) {
1793 /* FIXME: no access checking? */
1794 rc = slap_passwd_check( op, NULL, &at, bv, &txt );
1796 if (rc != LDAP_SUCCESS) continue;
1798 rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
1799 rs->sr_text = "Password is in history of old passwords";
1800 pErr = PP_passwordInHistory;
1801 goto return_results;
1807 struct berval timestamp;
1808 char timebuf[ LDAP_LUTIL_GENTIME_BUFSIZE ];
1809 time_t now = slap_get_time();
1811 /* If the conn is restricted, set a callback to clear it
1812 * if the pwmod succeeds
1814 if (!BER_BVISEMPTY( &pwcons[op->o_conn->c_conn_idx].dn )) {
1815 slap_callback *sc = op->o_tmpcalloc( 1, sizeof( slap_callback ),
1817 sc->sc_next = op->o_callback;
1818 /* Must use sc_response to insure we reset on success, before
1819 * the client sees the response. Must use sc_cleanup to insure
1820 * that it gets cleaned up if sc_response is not called.
1822 sc->sc_response = ppolicy_mod_cb;
1823 sc->sc_cleanup = ppolicy_mod_cb;
1824 op->o_callback = sc;
1828 * keep the necessary pwd.. operational attributes
1832 timestamp.bv_val = timebuf;
1833 timestamp.bv_len = sizeof(timebuf);
1834 slap_timestamp( &now, ×tamp );
1836 mods = (Modifications *) ch_calloc( sizeof( Modifications ), 1 );
1837 mods->sml_desc = ad_pwdChangedTime;
1838 if (pwmop != LDAP_MOD_DELETE) {
1839 mods->sml_op = LDAP_MOD_REPLACE;
1840 mods->sml_values = (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
1841 ber_dupbv( &mods->sml_values[0], ×tamp );
1842 BER_BVZERO( &mods->sml_values[1] );
1843 assert( !BER_BVISNULL( &mods->sml_values[0] ) );
1846 mods->sml_op = LDAP_MOD_DELETE;
1848 mods->sml_flags = SLAP_MOD_INTERNAL;
1849 mods->sml_next = NULL;
1850 modtail->sml_next = mods;
1853 if (attr_find(e->e_attrs, ad_pwdGraceUseTime )) {
1854 mods = (Modifications *) ch_calloc( sizeof( Modifications ), 1 );
1855 mods->sml_op = LDAP_MOD_DELETE;
1856 mods->sml_desc = ad_pwdGraceUseTime;
1857 mods->sml_flags = SLAP_MOD_INTERNAL;
1858 mods->sml_next = NULL;
1859 modtail->sml_next = mods;
1863 if (attr_find(e->e_attrs, ad_pwdAccountLockedTime )) {
1864 mods = (Modifications *) ch_calloc( sizeof( Modifications ), 1 );
1865 mods->sml_op = LDAP_MOD_DELETE;
1866 mods->sml_desc = ad_pwdAccountLockedTime;
1867 mods->sml_flags = SLAP_MOD_INTERNAL;
1868 mods->sml_next = NULL;
1869 modtail->sml_next = mods;
1873 if (attr_find(e->e_attrs, ad_pwdFailureTime )) {
1874 mods = (Modifications *) ch_calloc( sizeof( Modifications ), 1 );
1875 mods->sml_op = LDAP_MOD_DELETE;
1876 mods->sml_desc = ad_pwdFailureTime;
1877 mods->sml_flags = SLAP_MOD_INTERNAL;
1878 mods->sml_next = NULL;
1879 modtail->sml_next = mods;
1883 /* Delete the pwdReset attribute, since it's being reset */
1884 if ((zapReset) && (attr_find(e->e_attrs, ad_pwdReset ))) {
1885 mods = (Modifications *) ch_calloc( sizeof( Modifications ), 1 );
1886 mods->sml_op = LDAP_MOD_DELETE;
1887 mods->sml_desc = ad_pwdReset;
1888 mods->sml_flags = SLAP_MOD_INTERNAL;
1889 mods->sml_next = NULL;
1890 modtail->sml_next = mods;
1894 if (pp.pwdInHistory > 0) {
1895 if (hsize >= pp.pwdInHistory) {
1897 * We use the >= operator, since we are going to add
1898 * the existing password attribute value into the
1899 * history - thus the cardinality of history values is
1900 * about to rise by one.
1902 * If this would push it over the limit of history
1903 * values (remembering - the password policy could have
1904 * changed since the password was last altered), we must
1905 * delete at least 1 value from the pwdHistory list.
1907 * In fact, we delete '(#pwdHistory attrs - max pwd
1908 * history length) + 1' values, starting with the oldest.
1909 * This is easily evaluated, since the linked list is
1910 * created in ascending time order.
1912 mods = (Modifications *) ch_calloc( sizeof( Modifications ), 1 );
1913 mods->sml_op = LDAP_MOD_DELETE;
1914 mods->sml_flags = SLAP_MOD_INTERNAL;
1915 mods->sml_desc = ad_pwdHistory;
1916 mods->sml_values = ch_calloc( sizeof( struct berval ),
1917 hsize - pp.pwdInHistory + 2 );
1918 BER_BVZERO( &mods->sml_values[ hsize - pp.pwdInHistory + 1 ] );
1919 for(i=0,p=tl; i < (hsize - pp.pwdInHistory + 1); i++, p=p->next) {
1920 BER_BVZERO( &mods->sml_values[i] );
1921 ber_dupbv( &(mods->sml_values[i]), &p->bv );
1923 mods->sml_next = NULL;
1924 modtail->sml_next = mods;
1927 free_pwd_history_list( &tl );
1930 * Now add the existing password into the history list.
1931 * This will be executed even if the operation is to delete
1932 * the password entirely.
1934 * This isn't in the spec explicitly, but it seems to make
1935 * sense that the password history list is the list of all
1936 * previous passwords - even if they were deleted. Thus, if
1937 * someone tries to add a historical password at some future
1938 * point, it will fail.
1940 if ((pa = attr_find( e->e_attrs, pp.ad )) != NULL) {
1941 mods = (Modifications *) ch_malloc( sizeof( Modifications ) );
1942 mods->sml_op = LDAP_MOD_ADD;
1943 mods->sml_flags = SLAP_MOD_INTERNAL;
1944 mods->sml_type.bv_val = NULL;
1945 mods->sml_desc = ad_pwdHistory;
1946 mods->sml_nvalues = NULL;
1947 mods->sml_values = ch_calloc( sizeof( struct berval ), 2 );
1948 mods->sml_values[ 1 ].bv_val = NULL;
1949 mods->sml_values[ 1 ].bv_len = 0;
1950 make_pwd_history_value( timebuf, &mods->sml_values[0], pa );
1951 mods->sml_next = NULL;
1952 modtail->sml_next = mods;
1956 Debug( LDAP_DEBUG_TRACE,
1957 "ppolicy_modify: password attr lookup failed\n", 0, 0, 0 );
1962 * Controversial bit here. If the new password isn't hashed
1963 * (ie, is cleartext), we probably should hash it according
1964 * to the default hash. The reason for this is that we want
1965 * to use the policy if possible, but if we hash the password
1966 * before, then we're going to run into trouble when it
1967 * comes time to check the password.
1969 * Now, the right thing to do is to use the extended password
1970 * modify operation, but not all software can do this,
1971 * therefore it makes sense to hash the new password, now
1972 * we know it passes the policy requirements.
1974 * Of course, if the password is already hashed, then we
1978 if ((pi->hash_passwords) && (addmod) && !newpw.bv_val &&
1979 (password_scheme( &(addmod->sml_values[0]), NULL ) != LDAP_SUCCESS))
1981 struct berval hpw, bv;
1983 slap_passwd_hash( &(addmod->sml_values[0]), &hpw, &txt );
1984 if (hpw.bv_val == NULL) {
1986 * hashing didn't work. Emit an error.
1988 rs->sr_err = LDAP_OTHER;
1990 goto return_results;
1992 bv = addmod->sml_values[0];
1993 /* clear and discard the clear password */
1994 memset(bv.bv_val, 0, bv.bv_len);
1995 ber_memfree(bv.bv_val);
1996 addmod->sml_values[0] = hpw;
1999 op->o_bd->bd_info = (BackendInfo *)on->on_info;
2000 be_entry_release_r( op, e );
2001 return SLAP_CB_CONTINUE;
2004 free_pwd_history_list( &tl );
2005 op->o_bd->bd_info = (BackendInfo *)on->on_info;
2006 be_entry_release_r( op, e );
2008 LDAPControl *ctrl = NULL;
2010 ctrl = create_passcontrol( -1, -1, pErr );
2011 oldctrls = add_passcontrol( op, rs, ctrl );
2013 send_ldap_result( op, rs );
2015 ctrls_cleanup( op, rs, oldctrls );
2026 if ( !BER_BVISNULL( &ctrl->ldctl_value ) ) {
2027 rs->sr_text = "passwordPolicyRequest control value not absent";
2028 return LDAP_PROTOCOL_ERROR;
2030 op->o_ctrlflag[ppolicy_cid] = ctrl->ldctl_iscritical
2031 ? SLAP_CONTROL_CRITICAL
2032 : SLAP_CONTROL_NONCRITICAL;
2034 return LDAP_SUCCESS;
2044 AttributeDescription *ad = NULL;
2048 code = slap_bv2ad( val, &ad, &err );
2050 ber_dupbv_x( out, &ad->ad_type->sat_cname, ctx );
2064 AttributeDescription *ad = NULL;
2068 code = slap_bv2ad( val, &ad, &err );
2070 ber_str2bv_x( ad->ad_type->sat_oid, 0, 1, out, ctx );
2080 slap_overinst *on = (slap_overinst *) be->bd_info;
2082 /* Has User Schema been initialized yet? */
2083 if ( !pwd_UsSchema[0].ad[0] ) {
2087 for (i=0; pwd_UsSchema[i].def; i++) {
2088 code = slap_str2ad( pwd_UsSchema[i].def, pwd_UsSchema[i].ad, &err );
2090 fprintf( stderr, "User Schema Load failed %d: %s\n", code, err );
2098 syn = ch_malloc( sizeof( Syntax ));
2099 *syn = *ad_pwdAttribute->ad_type->sat_syntax;
2100 syn->ssyn_pretty = attrPretty;
2101 ad_pwdAttribute->ad_type->sat_syntax = syn;
2103 mr = ch_malloc( sizeof( MatchingRule ));
2104 *mr = *ad_pwdAttribute->ad_type->sat_equality;
2105 mr->smr_normalize = attrNormalize;
2106 ad_pwdAttribute->ad_type->sat_equality = mr;
2110 on->on_bi.bi_private = ch_calloc( sizeof(pp_info), 1 );
2112 if ( dtblsize && !pwcons )
2113 pwcons = ch_calloc(sizeof(pw_conn), dtblsize );
2123 return overlay_register_control( be, LDAP_CONTROL_PASSWORDPOLICYREQUEST );
2131 slap_overinst *on = (slap_overinst *) be->bd_info;
2132 pp_info *pi = on->on_bi.bi_private;
2135 free( pi->def_policy.bv_val );
2141 static char *extops[] = {
2142 LDAP_EXOP_MODIFY_PASSWD,
2146 static slap_overinst ppolicy;
2148 int ppolicy_initialize()
2152 for (i=0; pwd_OpSchema[i].def; i++) {
2153 code = register_at( pwd_OpSchema[i].def, pwd_OpSchema[i].ad, 0 );
2155 Debug( LDAP_DEBUG_ANY,
2156 "ppolicy_initialize: register_at failed\n", 0, 0, 0 );
2159 /* Allow Manager to set these as needed */
2160 if ( is_at_no_user_mod( (*pwd_OpSchema[i].ad)->ad_type )) {
2161 (*pwd_OpSchema[i].ad)->ad_type->sat_flags |=
2166 code = register_supported_control( LDAP_CONTROL_PASSWORDPOLICYREQUEST,
2167 SLAP_CTRL_ADD|SLAP_CTRL_BIND|SLAP_CTRL_MODIFY|SLAP_CTRL_HIDE, extops,
2168 ppolicy_parseCtrl, &ppolicy_cid );
2169 if ( code != LDAP_SUCCESS ) {
2170 fprintf( stderr, "Failed to register control %d\n", code );
2174 ldap_pvt_thread_mutex_init( &chk_syntax_mutex );
2176 ppolicy.on_bi.bi_type = "ppolicy";
2177 ppolicy.on_bi.bi_db_init = ppolicy_db_init;
2178 ppolicy.on_bi.bi_db_open = ppolicy_db_open;
2179 ppolicy.on_bi.bi_db_close = ppolicy_close;
2181 ppolicy.on_bi.bi_op_add = ppolicy_add;
2182 ppolicy.on_bi.bi_op_bind = ppolicy_bind;
2183 ppolicy.on_bi.bi_op_compare = ppolicy_restrict;
2184 ppolicy.on_bi.bi_op_delete = ppolicy_restrict;
2185 ppolicy.on_bi.bi_op_modify = ppolicy_modify;
2186 ppolicy.on_bi.bi_op_search = ppolicy_restrict;
2187 ppolicy.on_bi.bi_connection_destroy = ppolicy_connection_destroy;
2189 ppolicy.on_bi.bi_cf_ocs = ppolicyocs;
2190 code = config_register_schema( ppolicycfg, ppolicyocs );
2191 if ( code ) return code;
2193 return overlay_register( &ppolicy );
2196 #if SLAPD_OVER_PPOLICY == SLAPD_MOD_DYNAMIC
2197 int init_module(int argc, char *argv[]) {
2198 return ppolicy_initialize();
2202 #endif /* defined(SLAPD_OVER_PPOLICY) */