1 /* acl.c - routines to parse and check acl's */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 1998-2007 The OpenLDAP Foundation.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted only as authorized by the OpenLDAP
12 * A copy of this license is available in the file LICENSE in the
13 * top-level directory of the distribution or, alternatively, at
14 * <http://www.OpenLDAP.org/license.html>.
16 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
17 * All rights reserved.
19 * Redistribution and use in source and binary forms are permitted
20 * provided that this notice is preserved and that due credit is given
21 * to the University of Michigan at Ann Arbor. The name of the University
22 * may not be used to endorse or promote products derived from this
23 * software without specific prior written permission. This software
24 * is provided ``as is'' without express or implied warranty.
32 #include <ac/socket.h>
33 #include <ac/string.h>
40 #define ACL_BUF_SIZE 1024 /* use most appropriate size */
42 static const struct berval acl_bv_ip_eq = BER_BVC( "IP=" );
44 static const struct berval acl_bv_ipv6_eq = BER_BVC( "IP=[" );
45 #endif /* LDAP_PF_INET6 */
47 static const struct berval acl_bv_path_eq = BER_BVC("PATH=");
48 #endif /* LDAP_PF_LOCAL */
50 static AccessControl * slap_acl_get(
51 AccessControl *ac, int *count,
52 Operation *op, Entry *e,
53 AttributeDescription *desc,
55 int nmatch, regmatch_t *matches,
56 AccessControlState *state );
58 static slap_control_t slap_acl_mask(
59 AccessControl *ac, slap_mask_t *mask,
60 Operation *op, Entry *e,
61 AttributeDescription *desc,
66 AccessControlState *state );
68 static int regex_matches(
69 struct berval *pat, char *str, char *buf,
70 int nmatch, regmatch_t *matches);
72 typedef struct AclSetCookie {
74 #define asc_op asc_cookie.set_op
78 SLAP_SET_GATHER acl_set_gather;
79 SLAP_SET_GATHER acl_set_gather2;
82 * access_allowed - check whether op->o_ndn is allowed the requested access
83 * to entry e, attribute attr, value val. if val is null, access to
84 * the whole attribute is assumed (all values).
86 * This routine loops through all access controls and calls
87 * slap_acl_mask() on each applicable access control.
88 * The loop exits when a definitive answer is reached or
89 * or no more controls remain.
96 * - can be legally called with op == NULL
97 * - can be legally called with op->o_bd == NULL
101 slap_access_always_allowed(
104 AttributeDescription *desc,
106 slap_access_t access,
107 AccessControlState *state,
110 assert( maskp != NULL );
113 ACL_LVL_ASSIGN_MANAGE( *maskp );
122 AttributeDescription *desc,
124 slap_access_t access,
125 AccessControlState *state,
130 AccessControl *a = NULL;
133 char accessmaskbuf[ACCESSMASK_MAXLEN];
136 slap_control_t control;
137 slap_access_t access_level;
139 regmatch_t matches[MAXREMATCHES];
141 assert( op != NULL );
143 assert( desc != NULL );
144 assert( maskp != NULL );
146 access_level = ACL_LEVEL( access );
147 attr = desc->ad_cname.bv_val;
149 assert( attr != NULL );
153 /* grant database root access */
154 if ( be_isroot( op ) ) {
155 Debug( LDAP_DEBUG_ACL, "<= root access granted\n", 0, 0, 0 );
156 mask = ACL_LVL_MANAGE;
161 * no-user-modification operational attributes are ignored
162 * by ACL_WRITE checking as any found here are not provided
165 * NOTE: but they are not ignored for ACL_MANAGE, because
166 * if we get here it means a non-root user is trying to
167 * manage data, so we need to check its privileges.
169 if ( access_level == ACL_WRITE
170 && is_at_no_user_mod( desc->ad_type )
171 && desc != slap_schema.si_ad_entry
172 && desc != slap_schema.si_ad_children )
174 Debug( LDAP_DEBUG_ACL, "NoUserMod Operational attribute:"
175 " %s access granted\n",
180 /* use backend default access if no backend acls */
181 if ( op->o_bd->be_acl == NULL ) {
184 Debug( LDAP_DEBUG_ACL,
185 "=> slap_access_allowed: backend default %s "
186 "access %s to \"%s\"\n",
187 access2str( access ),
188 op->o_bd->be_dfltaccess >= access_level ? "granted" : "denied",
189 op->o_dn.bv_val ? op->o_dn.bv_val : "(anonymous)" );
190 ret = op->o_bd->be_dfltaccess >= access_level;
192 mask = ACL_PRIV_LEVEL;
193 for ( i = ACL_NONE; i <= op->o_bd->be_dfltaccess; i++ ) {
194 ACL_PRIV_SET( mask, ACL_ACCESS2PRIV( i ) );
203 if ( state && state->as_vd_ad == desc ) {
204 a = state->as_vd_acl;
205 count = state->as_vd_acl_count;
208 if ( state ) state->as_vi_acl = NULL;
212 ACL_PRIV_ASSIGN( mask, *maskp );
213 memset( matches, '\0', sizeof( matches ) );
215 while ( ( a = slap_acl_get( a, &count, op, e, desc, val,
216 MAXREMATCHES, matches, state ) ) != NULL )
220 for ( i = 0; i < MAXREMATCHES && matches[i].rm_so > 0; i++ ) {
221 Debug( LDAP_DEBUG_ACL, "=> match[%d]: %d %d ", i,
222 (int)matches[i].rm_so, (int)matches[i].rm_eo );
223 if ( matches[i].rm_so <= matches[0].rm_eo ) {
225 for ( n = matches[i].rm_so; n < matches[i].rm_eo; n++ ) {
226 Debug( LDAP_DEBUG_ACL, "%c", e->e_ndn[n], 0, 0 );
229 Debug( LDAP_DEBUG_ARGS, "\n", 0, 0, 0 );
233 if ( state->as_vi_acl == a &&
234 ( state->as_recorded & ACL_STATE_RECORDED_NV ) )
236 Debug( LDAP_DEBUG_ACL,
237 "=> slap_access_allowed: result from state (%s)\n",
239 ret = state->as_result;
242 Debug( LDAP_DEBUG_ACL,
243 "=> slap_access_allowed: no res from state (%s)\n",
248 control = slap_acl_mask( a, &mask, op,
249 e, desc, val, MAXREMATCHES, matches, count, state );
251 if ( control != ACL_BREAK ) {
255 memset( matches, '\0', sizeof( matches ) );
258 if ( ACL_IS_INVALID( mask ) ) {
259 Debug( LDAP_DEBUG_ACL,
260 "=> slap_access_allowed: \"%s\" (%s) invalid!\n",
262 ACL_PRIV_ASSIGN( mask, *maskp );
264 } else if ( control == ACL_BREAK ) {
265 Debug( LDAP_DEBUG_ACL,
266 "=> slap_access_allowed: no more rules\n", 0, 0, 0 );
271 ret = ACL_GRANT( mask, access );
273 Debug( LDAP_DEBUG_ACL,
274 "=> slap_access_allowed: %s access %s by %s\n",
275 access2str( access ), ret ? "granted" : "denied",
276 accessmask2str( mask, accessmaskbuf, 1 ) );
279 ACL_PRIV_ASSIGN( *maskp, mask );
287 AttributeDescription *desc,
289 slap_access_t access,
290 AccessControlState *state,
297 * NOTE: control gets here if FIXME
298 * if an appropriate backend cannot be selected for the operation,
299 * we assume that the frontend should handle this
300 * FIXME: should select_backend() take care of this,
301 * and return frontendDB instead of NULL? maybe for some value
306 if ( op->o_bd == NULL ) {
307 op->o_bd = select_backend( &op->o_req_ndn, 0 );
308 if ( op->o_bd == NULL )
309 op->o_bd = frontendDB;
311 rc = slap_access_allowed( op, e, desc, val, access, state, maskp );
321 AttributeDescription *desc,
323 slap_access_t access,
324 AccessControlState *state,
328 AccessControl *a = NULL;
332 char accessmaskbuf[ACCESSMASK_MAXLEN];
335 slap_access_t access_level;
337 static AccessControlState state_init = ACL_STATE_INIT;
340 assert( desc != NULL );
342 access_level = ACL_LEVEL( access );
344 assert( access_level > ACL_NONE );
347 if ( maskp ) ACL_INVALIDATE( *maskp );
349 attr = desc->ad_cname.bv_val;
351 assert( attr != NULL );
354 if ( op->o_acl_priv != ACL_NONE ) {
355 access = op->o_acl_priv;
357 } else if ( op->o_is_auth_check &&
358 ( access_level == ACL_SEARCH || access_level == ACL_READ ) )
362 } else if ( get_relax( op ) && access_level == ACL_WRITE &&
363 desc == slap_schema.si_ad_entry )
370 if ( state->as_vd_ad == desc ) {
371 if ( ( state->as_recorded & ACL_STATE_RECORDED_NV ) &&
374 return state->as_result;
382 Debug( LDAP_DEBUG_ACL,
383 "=> access_allowed: %s access to \"%s\" \"%s\" requested\n",
384 access2str( access ), e->e_dn, attr );
391 if ( op->o_bd == NULL ) {
392 op->o_bd = LDAP_STAILQ_FIRST( &backendDB );
395 /* FIXME: experimental; use first backend rules
396 * iff there is no global_acl (ITS#3100)
398 if ( frontendDB->be_acl != NULL ) {
399 op->o_bd = frontendDB;
402 assert( op->o_bd != NULL );
404 /* this is enforced in backend_add() */
405 if ( op->o_bd->bd_info->bi_access_allowed ) {
406 /* delegate to backend */
407 ret = op->o_bd->bd_info->bi_access_allowed( op, e,
408 desc, val, access, state, &mask );
411 /* use default (but pass through frontend
412 * for global ACL overlays) */
413 ret = frontendDB->bd_info->bi_access_allowed( op, e,
414 desc, val, access, state, &mask );
418 if ( ACL_IS_INVALID( mask ) ) {
419 Debug( LDAP_DEBUG_ACL,
420 "=> access_allowed: \"%s\" (%s) invalid!\n",
425 Debug( LDAP_DEBUG_ACL,
426 "=> access_allowed: no more rules\n", 0, 0, 0 );
432 Debug( LDAP_DEBUG_ACL,
433 "=> access_allowed: %s access %s by %s\n",
434 access2str( access ), ret ? "granted" : "denied",
435 accessmask2str( mask, accessmaskbuf, 1 ) );
438 if ( state != NULL ) {
439 /* If not value-dependent, save ACL in case of more attrs */
440 if ( !( state->as_recorded & ACL_STATE_RECORDED_VD ) ) {
441 state->as_vi_acl = a;
442 state->as_result = ret;
444 state->as_recorded |= ACL_STATE_RECORDED;
445 state->as_vd_ad = desc;
447 if ( be_null ) op->o_bd = NULL;
448 if ( maskp ) ACL_PRIV_ASSIGN( *maskp, mask );
454 * slap_acl_get - return the acl applicable to entry e, attribute
455 * attr. the acl returned is suitable for use in subsequent calls to
456 * acl_access_allowed().
459 static AccessControl *
465 AttributeDescription *desc,
469 AccessControlState *state )
476 assert( count != NULL );
477 assert( desc != NULL );
479 attr = desc->ad_cname.bv_val;
481 assert( attr != NULL );
484 if( op->o_bd == NULL ) {
485 a = frontendDB->be_acl;
487 a = op->o_bd->be_acl;
498 dnlen = e->e_nname.bv_len;
500 for ( ; a != NULL; prev = a, a = a->acl_next ) {
503 if ( a->acl_dn_pat.bv_len || ( a->acl_dn_style != ACL_STYLE_REGEX )) {
504 if ( a->acl_dn_style == ACL_STYLE_REGEX ) {
505 Debug( LDAP_DEBUG_ACL, "=> dnpat: [%d] %s nsub: %d\n",
506 *count, a->acl_dn_pat.bv_val, (int) a->acl_dn_re.re_nsub );
507 if (regexec(&a->acl_dn_re, e->e_ndn, nmatch, matches, 0))
511 Debug( LDAP_DEBUG_ACL, "=> dn: [%d] %s\n",
512 *count, a->acl_dn_pat.bv_val, 0 );
513 patlen = a->acl_dn_pat.bv_len;
514 if ( dnlen < patlen )
517 if ( a->acl_dn_style == ACL_STYLE_BASE ) {
518 /* base dn -- entire object DN must match */
519 if ( dnlen != patlen )
522 } else if ( a->acl_dn_style == ACL_STYLE_ONE ) {
523 ber_len_t rdnlen = 0;
526 if ( dnlen <= patlen )
530 if ( !DN_SEPARATOR( e->e_ndn[dnlen - patlen - 1] ) )
535 rdnlen = dn_rdnlen( NULL, &e->e_nname );
536 if ( rdnlen != dnlen - patlen - sep )
539 } else if ( a->acl_dn_style == ACL_STYLE_SUBTREE ) {
540 if ( dnlen > patlen && !DN_SEPARATOR( e->e_ndn[dnlen - patlen - 1] ) )
543 } else if ( a->acl_dn_style == ACL_STYLE_CHILDREN ) {
544 if ( dnlen <= patlen )
546 if ( !DN_SEPARATOR( e->e_ndn[dnlen - patlen - 1] ) )
550 if ( strcmp( a->acl_dn_pat.bv_val, e->e_ndn + dnlen - patlen ) != 0 )
554 Debug( LDAP_DEBUG_ACL, "=> acl_get: [%d] matched\n",
558 if ( a->acl_attrs && !ad_inlist( desc, a->acl_attrs ) ) {
559 matches[0].rm_so = matches[0].rm_eo = -1;
563 /* Is this ACL only for a specific value? */
564 if ( a->acl_attrval.bv_len ) {
569 if( state && !( state->as_recorded & ACL_STATE_RECORDED_VD )) {
570 state->as_recorded |= ACL_STATE_RECORDED_VD;
571 state->as_vd_acl = prev;
572 state->as_vd_acl_count = *count - 1;
575 if ( a->acl_attrval_style == ACL_STYLE_REGEX ) {
576 Debug( LDAP_DEBUG_ACL,
577 "acl_get: valpat %s\n",
578 a->acl_attrval.bv_val, 0, 0 );
579 if ( regexec( &a->acl_attrval_re, val->bv_val, 0, NULL, 0 ) )
587 Debug( LDAP_DEBUG_ACL,
589 a->acl_attrval.bv_val, 0, 0 );
591 if ( a->acl_attrs[0].an_desc->ad_type->sat_syntax != slap_schema.si_syn_distinguishedName ) {
592 if (value_match( &match, desc,
593 a->acl_attrval_mr, 0,
594 val, &a->acl_attrval, &text ) != LDAP_SUCCESS ||
601 patlen = a->acl_attrval.bv_len;
602 vdnlen = val->bv_len;
604 if ( vdnlen < patlen )
607 if ( a->acl_attrval_style == ACL_STYLE_BASE ) {
608 if ( vdnlen > patlen )
611 } else if ( a->acl_attrval_style == ACL_STYLE_ONE ) {
612 ber_len_t rdnlen = 0;
614 if ( !DN_SEPARATOR( val->bv_val[vdnlen - patlen - 1] ) )
617 rdnlen = dn_rdnlen( NULL, val );
618 if ( rdnlen != vdnlen - patlen - 1 )
621 } else if ( a->acl_attrval_style == ACL_STYLE_SUBTREE ) {
622 if ( vdnlen > patlen && !DN_SEPARATOR( val->bv_val[vdnlen - patlen - 1] ) )
625 } else if ( a->acl_attrval_style == ACL_STYLE_CHILDREN ) {
626 if ( vdnlen <= patlen )
629 if ( !DN_SEPARATOR( val->bv_val[vdnlen - patlen - 1] ) )
633 if ( strcmp( a->acl_attrval.bv_val, val->bv_val + vdnlen - patlen ) )
639 if ( a->acl_filter != NULL ) {
640 ber_int_t rc = test_filter( NULL, e, a->acl_filter );
641 if ( rc != LDAP_COMPARE_TRUE ) {
646 Debug( LDAP_DEBUG_ACL, "=> acl_get: [%d] attr %s\n",
651 Debug( LDAP_DEBUG_ACL, "<= acl_get: done.\n", 0, 0, 0 );
656 * Record value-dependent access control state
658 #define ACL_RECORD_VALUE_STATE do { \
659 if( state && !( state->as_recorded & ACL_STATE_RECORDED_VD )) { \
660 state->as_recorded |= ACL_STATE_RECORDED_VD; \
661 state->as_vd_acl = a; \
662 state->as_vd_acl_count = count; \
670 AttributeDescription *desc,
676 struct berval *opndn )
679 * if access applies to the entry itself, and the
680 * user is bound as somebody in the same namespace as
681 * the entry, OR the given dn matches the dn pattern
684 * NOTE: styles "anonymous", "users" and "self"
685 * have been moved to enum slap_style_t, whose
686 * value is set in a_dn_style; however, the string
687 * is maintained in a_dn_pat.
690 if ( bdn->a_style == ACL_STYLE_ANONYMOUS ) {
691 if ( !BER_BVISEMPTY( opndn ) ) {
695 } else if ( bdn->a_style == ACL_STYLE_USERS ) {
696 if ( BER_BVISEMPTY( opndn ) ) {
700 } else if ( bdn->a_style == ACL_STYLE_SELF ) {
701 struct berval ndn, selfndn;
704 if ( BER_BVISEMPTY( opndn ) || BER_BVISNULL( &e->e_nname ) ) {
708 level = bdn->a_self_level;
716 selfndn = e->e_nname;
719 for ( ; level > 0; level-- ) {
720 if ( BER_BVISEMPTY( &ndn ) ) {
723 dnParent( &ndn, &ndn );
726 if ( BER_BVISEMPTY( &ndn ) || !dn_match( &ndn, &selfndn ) )
731 } else if ( bdn->a_style == ACL_STYLE_REGEX ) {
732 if ( !ber_bvccmp( &bdn->a_pat, '*' ) ) {
734 regmatch_t tmp_matches[2],
735 *tmp_matchesp = tmp_matches;
739 switch ( a->acl_dn_style ) {
740 case ACL_STYLE_REGEX:
741 if ( !BER_BVISNULL( &a->acl_dn_pat ) ) {
742 tmp_matchesp = matches;
746 /* FALLTHRU: applies also to ACL_STYLE_REGEX when pattern is "*" */
749 tmp_matches[0].rm_so = 0;
750 tmp_matches[0].rm_eo = e->e_nname.bv_len;
755 case ACL_STYLE_SUBTREE:
756 case ACL_STYLE_CHILDREN:
757 tmp_matches[0].rm_so = 0;
758 tmp_matches[0].rm_eo = e->e_nname.bv_len;
759 tmp_matches[1].rm_so = e->e_nname.bv_len - a->acl_dn_pat.bv_len;
760 tmp_matches[1].rm_eo = e->e_nname.bv_len;
774 if ( !regex_matches( &bdn->a_pat, opndn->bv_val,
775 e->e_ndn, tmp_nmatch, tmp_matchesp ) )
783 ber_len_t patlen, odnlen;
786 if ( e->e_dn == NULL )
789 if ( bdn->a_expand ) {
791 char buf[ACL_BUF_SIZE];
794 regmatch_t tmp_matches[2],
795 *tmp_matchesp = tmp_matches;
799 bv.bv_len = sizeof( buf ) - 1;
802 switch ( a->acl_dn_style ) {
803 case ACL_STYLE_REGEX:
804 if ( !BER_BVISNULL( &a->acl_dn_pat ) ) {
805 tmp_matchesp = matches;
809 /* FALLTHRU: applies also to ACL_STYLE_REGEX when pattern is "*" */
812 tmp_matches[0].rm_so = 0;
813 tmp_matches[0].rm_eo = e->e_nname.bv_len;
818 case ACL_STYLE_SUBTREE:
819 case ACL_STYLE_CHILDREN:
820 tmp_matches[0].rm_so = 0;
821 tmp_matches[0].rm_eo = e->e_nname.bv_len;
822 tmp_matches[1].rm_so = e->e_nname.bv_len - a->acl_dn_pat.bv_len;
823 tmp_matches[1].rm_eo = e->e_nname.bv_len;
837 if ( acl_string_expand( &bv, &bdn->a_pat,
839 tmp_nmatch, tmp_matchesp ) )
844 if ( dnNormalize(0, NULL, NULL, &bv,
845 &pat, op->o_tmpmemctx )
848 /* did not expand to a valid dn */
857 odnlen = opndn->bv_len;
858 if ( odnlen < patlen ) {
859 goto dn_match_cleanup;
863 if ( bdn->a_style == ACL_STYLE_BASE ) {
864 /* base dn -- entire object DN must match */
865 if ( odnlen != patlen ) {
866 goto dn_match_cleanup;
869 } else if ( bdn->a_style == ACL_STYLE_ONE ) {
870 ber_len_t rdnlen = 0;
872 if ( odnlen <= patlen ) {
873 goto dn_match_cleanup;
876 if ( !DN_SEPARATOR( opndn->bv_val[odnlen - patlen - 1] ) ) {
877 goto dn_match_cleanup;
880 rdnlen = dn_rdnlen( NULL, opndn );
881 if ( rdnlen - ( odnlen - patlen - 1 ) != 0 ) {
882 goto dn_match_cleanup;
885 } else if ( bdn->a_style == ACL_STYLE_SUBTREE ) {
886 if ( odnlen > patlen && !DN_SEPARATOR( opndn->bv_val[odnlen - patlen - 1] ) ) {
887 goto dn_match_cleanup;
890 } else if ( bdn->a_style == ACL_STYLE_CHILDREN ) {
891 if ( odnlen <= patlen ) {
892 goto dn_match_cleanup;
895 if ( !DN_SEPARATOR( opndn->bv_val[odnlen - patlen - 1] ) ) {
896 goto dn_match_cleanup;
899 } else if ( bdn->a_style == ACL_STYLE_LEVEL ) {
900 int level = bdn->a_level;
903 if ( odnlen <= patlen ) {
904 goto dn_match_cleanup;
907 if ( level > 0 && !DN_SEPARATOR( opndn->bv_val[odnlen - patlen - 1] ) )
909 goto dn_match_cleanup;
913 for ( ; level > 0; level-- ) {
914 if ( BER_BVISEMPTY( &ndn ) ) {
915 goto dn_match_cleanup;
917 dnParent( &ndn, &ndn );
918 if ( ndn.bv_len < patlen ) {
919 goto dn_match_cleanup;
923 if ( ndn.bv_len != patlen ) {
924 goto dn_match_cleanup;
928 got_match = !strcmp( pat.bv_val, &opndn->bv_val[ odnlen - patlen ] );
931 if ( pat.bv_val != bdn->a_pat.bv_val ) {
932 slap_sl_free( pat.bv_val, op->o_tmpmemctx );
953 AccessControlState *state,
955 struct berval *opndn )
961 const char *attr = bdn->a_at->ad_cname.bv_val;
963 assert( attr != NULL );
965 if ( BER_BVISEMPTY( opndn ) ) {
969 Debug( LDAP_DEBUG_ACL, "<= check a_dn_at: %s\n", attr, 0, 0 );
972 /* see if asker is listed in dnattr */
973 for ( at = attrs_find( e->e_attrs, bdn->a_at );
975 at = attrs_find( at->a_next, bdn->a_at ) )
977 if ( value_find_ex( bdn->a_at,
978 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
979 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
981 &bv, op->o_tmpmemctx ) == 0 )
990 /* have a dnattr match. if this is a self clause then
991 * the target must also match the op dn.
994 /* check if the target is an attribute. */
995 if ( val == NULL ) return 1;
997 /* target is attribute, check if the attribute value
1000 rc = value_match( &match, bdn->a_at,
1001 bdn->a_at->ad_type->sat_equality, 0,
1003 /* on match error or no match, fail the ACL clause */
1004 if ( rc != LDAP_SUCCESS || match != 0 )
1009 /* no dnattr match, check if this is a self clause */
1010 if ( ! bdn->a_self )
1013 ACL_RECORD_VALUE_STATE;
1015 /* this is a self clause, check if the target is an
1021 /* target is attribute, check if the attribute value
1024 rc = value_match( &match, bdn->a_at,
1025 bdn->a_at->ad_type->sat_equality, 0,
1028 /* on match error or no match, fail the ACL clause */
1029 if ( rc != LDAP_SUCCESS || match != 0 )
1038 * slap_acl_mask - modifies mask based upon the given acl and the
1039 * requested access to entry e, attribute attr, value val. if val
1040 * is null, access to the whole attribute is assumed (all values).
1042 * returns 0 access NOT allowed
1046 static slap_control_t
1052 AttributeDescription *desc,
1055 regmatch_t *matches,
1057 AccessControlState *state )
1062 char accessmaskbuf[ACCESSMASK_MAXLEN];
1065 slap_mask_t a2pmask = ACL_ACCESS2PRIV( *mask );
1067 assert( a != NULL );
1068 assert( mask != NULL );
1069 assert( desc != NULL );
1071 attr = desc->ad_cname.bv_val;
1073 assert( attr != NULL );
1075 Debug( LDAP_DEBUG_ACL,
1076 "=> acl_mask: access to entry \"%s\", attr \"%s\" requested\n",
1079 Debug( LDAP_DEBUG_ACL,
1080 "=> acl_mask: to %s by \"%s\", (%s) \n",
1081 val ? "value" : "all values",
1082 op->o_ndn.bv_val ? op->o_ndn.bv_val : "",
1083 accessmask2str( *mask, accessmaskbuf, 1 ) );
1089 for ( ; b != NULL; b = b->a_next, i++ ) {
1090 slap_mask_t oldmask, modmask;
1092 ACL_INVALIDATE( modmask );
1094 /* AND <who> clauses */
1095 if ( !BER_BVISEMPTY( &b->a_dn_pat ) ) {
1096 Debug( LDAP_DEBUG_ACL, "<= check a_dn_pat: %s\n",
1097 b->a_dn_pat.bv_val, 0, 0);
1099 * if access applies to the entry itself, and the
1100 * user is bound as somebody in the same namespace as
1101 * the entry, OR the given dn matches the dn pattern
1104 * NOTE: styles "anonymous", "users" and "self"
1105 * have been moved to enum slap_style_t, whose
1106 * value is set in a_dn_style; however, the string
1107 * is maintained in a_dn_pat.
1110 if ( acl_mask_dn( op, e, desc, val, a, nmatch, matches,
1111 &b->a_dn, &op->o_ndn ) )
1117 if ( !BER_BVISEMPTY( &b->a_realdn_pat ) ) {
1120 Debug( LDAP_DEBUG_ACL, "<= check a_realdn_pat: %s\n",
1121 b->a_realdn_pat.bv_val, 0, 0);
1123 * if access applies to the entry itself, and the
1124 * user is bound as somebody in the same namespace as
1125 * the entry, OR the given dn matches the dn pattern
1128 * NOTE: styles "anonymous", "users" and "self"
1129 * have been moved to enum slap_style_t, whose
1130 * value is set in a_dn_style; however, the string
1131 * is maintained in a_dn_pat.
1134 if ( op->o_conn && !BER_BVISNULL( &op->o_conn->c_ndn ) )
1136 ndn = op->o_conn->c_ndn;
1141 if ( acl_mask_dn( op, e, desc, val, a, nmatch, matches,
1142 &b->a_realdn, &ndn ) )
1148 if ( !BER_BVISEMPTY( &b->a_sockurl_pat ) ) {
1149 if ( ! op->o_conn->c_listener ) {
1152 Debug( LDAP_DEBUG_ACL, "<= check a_sockurl_pat: %s\n",
1153 b->a_sockurl_pat.bv_val, 0, 0 );
1155 if ( !ber_bvccmp( &b->a_sockurl_pat, '*' ) ) {
1156 if ( b->a_sockurl_style == ACL_STYLE_REGEX) {
1157 if (!regex_matches( &b->a_sockurl_pat, op->o_conn->c_listener_url.bv_val,
1158 e->e_ndn, nmatch, matches ) )
1163 } else if ( b->a_sockurl_style == ACL_STYLE_EXPAND ) {
1165 char buf[ACL_BUF_SIZE];
1167 bv.bv_len = sizeof( buf ) - 1;
1169 if ( acl_string_expand( &bv, &b->a_sockurl_pat,
1170 e->e_ndn, nmatch, matches ) )
1175 if ( ber_bvstrcasecmp( &bv, &op->o_conn->c_listener_url ) != 0 )
1181 if ( ber_bvstrcasecmp( &b->a_sockurl_pat, &op->o_conn->c_listener_url ) != 0 )
1189 if ( !BER_BVISEMPTY( &b->a_domain_pat ) ) {
1190 if ( !op->o_conn->c_peer_domain.bv_val ) {
1193 Debug( LDAP_DEBUG_ACL, "<= check a_domain_pat: %s\n",
1194 b->a_domain_pat.bv_val, 0, 0 );
1195 if ( !ber_bvccmp( &b->a_domain_pat, '*' ) ) {
1196 if ( b->a_domain_style == ACL_STYLE_REGEX) {
1197 if (!regex_matches( &b->a_domain_pat, op->o_conn->c_peer_domain.bv_val,
1198 e->e_ndn, nmatch, matches ) )
1203 char buf[ACL_BUF_SIZE];
1205 struct berval cmp = op->o_conn->c_peer_domain;
1206 struct berval pat = b->a_domain_pat;
1208 if ( b->a_domain_expand ) {
1211 bv.bv_len = sizeof(buf) - 1;
1214 if ( acl_string_expand(&bv, &b->a_domain_pat,
1215 e->e_ndn, nmatch, matches) )
1222 if ( b->a_domain_style == ACL_STYLE_SUBTREE ) {
1223 int offset = cmp.bv_len - pat.bv_len;
1228 if ( offset == 1 || ( offset > 1 && cmp.bv_val[ offset - 1 ] != '.' ) ) {
1232 /* trim the domain */
1233 cmp.bv_val = &cmp.bv_val[ offset ];
1234 cmp.bv_len -= offset;
1237 if ( ber_bvstrcasecmp( &pat, &cmp ) != 0 ) {
1244 if ( !BER_BVISEMPTY( &b->a_peername_pat ) ) {
1245 if ( !op->o_conn->c_peer_name.bv_val ) {
1248 Debug( LDAP_DEBUG_ACL, "<= check a_peername_path: %s\n",
1249 b->a_peername_pat.bv_val, 0, 0 );
1250 if ( !ber_bvccmp( &b->a_peername_pat, '*' ) ) {
1251 if ( b->a_peername_style == ACL_STYLE_REGEX ) {
1252 if (!regex_matches( &b->a_peername_pat, op->o_conn->c_peer_name.bv_val,
1253 e->e_ndn, nmatch, matches ) )
1259 /* try exact match */
1260 if ( b->a_peername_style == ACL_STYLE_BASE ) {
1261 if ( ber_bvstrcasecmp( &b->a_peername_pat, &op->o_conn->c_peer_name ) != 0 ) {
1265 } else if ( b->a_peername_style == ACL_STYLE_EXPAND ) {
1267 char buf[ACL_BUF_SIZE];
1269 bv.bv_len = sizeof( buf ) - 1;
1271 if ( acl_string_expand( &bv, &b->a_peername_pat,
1272 e->e_ndn, nmatch, matches ) )
1277 if ( ber_bvstrcasecmp( &bv, &op->o_conn->c_peer_name ) != 0 ) {
1281 /* extract IP and try exact match */
1282 } else if ( b->a_peername_style == ACL_STYLE_IP ) {
1284 char buf[] = "255.255.255.255";
1287 int port_number = -1;
1289 if ( strncasecmp( op->o_conn->c_peer_name.bv_val,
1290 acl_bv_ip_eq.bv_val,
1291 acl_bv_ip_eq.bv_len ) != 0 )
1294 ip.bv_val = op->o_conn->c_peer_name.bv_val + acl_bv_ip_eq.bv_len;
1295 ip.bv_len = op->o_conn->c_peer_name.bv_len - acl_bv_ip_eq.bv_len;
1297 port = strrchr( ip.bv_val, ':' );
1299 ip.bv_len = port - ip.bv_val;
1301 if ( lutil_atoi( &port_number, port ) != 0 )
1305 /* the port check can be anticipated here */
1306 if ( b->a_peername_port != -1 && port_number != b->a_peername_port )
1309 /* address longer than expected? */
1310 if ( ip.bv_len >= sizeof(buf) )
1313 AC_MEMCPY( buf, ip.bv_val, ip.bv_len );
1314 buf[ ip.bv_len ] = '\0';
1316 addr = inet_addr( buf );
1318 /* unable to convert? */
1319 if ( addr == (unsigned long)(-1) )
1322 if ( (addr & b->a_peername_mask) != b->a_peername_addr )
1325 #ifdef LDAP_PF_INET6
1326 /* extract IPv6 and try exact match */
1327 } else if ( b->a_peername_style == ACL_STYLE_IPV6 ) {
1329 char buf[] = "FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF";
1331 struct in6_addr addr;
1332 int port_number = -1;
1334 if ( strncasecmp( op->o_conn->c_peer_name.bv_val,
1335 acl_bv_ipv6_eq.bv_val,
1336 acl_bv_ipv6_eq.bv_len ) != 0 )
1339 ip.bv_val = op->o_conn->c_peer_name.bv_val + acl_bv_ipv6_eq.bv_len;
1340 ip.bv_len = op->o_conn->c_peer_name.bv_len - acl_bv_ipv6_eq.bv_len;
1342 port = strrchr( ip.bv_val, ']' );
1344 ip.bv_len = port - ip.bv_val;
1346 if ( port[0] == ':' && lutil_atoi( &port_number, ++port ) != 0 )
1350 /* the port check can be anticipated here */
1351 if ( b->a_peername_port != -1 && port_number != b->a_peername_port )
1354 /* address longer than expected? */
1355 if ( ip.bv_len >= sizeof(buf) )
1358 AC_MEMCPY( buf, ip.bv_val, ip.bv_len );
1359 buf[ ip.bv_len ] = '\0';
1361 if ( inet_pton( AF_INET6, buf, &addr ) != 1 )
1365 if ( !slap_addr6_mask( &addr, &b->a_peername_mask6, &b->a_peername_addr6 ) )
1367 #endif /* LDAP_PF_INET6 */
1369 #ifdef LDAP_PF_LOCAL
1370 /* extract path and try exact match */
1371 } else if ( b->a_peername_style == ACL_STYLE_PATH ) {
1374 if ( strncmp( op->o_conn->c_peer_name.bv_val,
1375 acl_bv_path_eq.bv_val,
1376 acl_bv_path_eq.bv_len ) != 0 )
1379 path.bv_val = op->o_conn->c_peer_name.bv_val
1380 + acl_bv_path_eq.bv_len;
1381 path.bv_len = op->o_conn->c_peer_name.bv_len
1382 - acl_bv_path_eq.bv_len;
1384 if ( ber_bvcmp( &b->a_peername_pat, &path ) != 0 )
1387 #endif /* LDAP_PF_LOCAL */
1389 /* exact match (very unlikely...) */
1390 } else if ( ber_bvcmp( &op->o_conn->c_peer_name, &b->a_peername_pat ) != 0 ) {
1397 if ( !BER_BVISEMPTY( &b->a_sockname_pat ) ) {
1398 if ( BER_BVISNULL( &op->o_conn->c_sock_name ) ) {
1401 Debug( LDAP_DEBUG_ACL, "<= check a_sockname_path: %s\n",
1402 b->a_sockname_pat.bv_val, 0, 0 );
1403 if ( !ber_bvccmp( &b->a_sockname_pat, '*' ) ) {
1404 if ( b->a_sockname_style == ACL_STYLE_REGEX) {
1405 if (!regex_matches( &b->a_sockname_pat, op->o_conn->c_sock_name.bv_val,
1406 e->e_ndn, nmatch, matches ) )
1411 } else if ( b->a_sockname_style == ACL_STYLE_EXPAND ) {
1413 char buf[ACL_BUF_SIZE];
1415 bv.bv_len = sizeof( buf ) - 1;
1417 if ( acl_string_expand( &bv, &b->a_sockname_pat,
1418 e->e_ndn, nmatch, matches ) )
1423 if ( ber_bvstrcasecmp( &bv, &op->o_conn->c_sock_name ) != 0 ) {
1428 if ( ber_bvstrcasecmp( &b->a_sockname_pat, &op->o_conn->c_sock_name ) != 0 ) {
1435 if ( b->a_dn_at != NULL ) {
1436 if ( acl_mask_dnattr( op, e, val, a, b, i,
1437 matches, count, state,
1438 &b->a_dn, &op->o_ndn ) )
1444 if ( b->a_realdn_at != NULL ) {
1447 if ( op->o_conn && !BER_BVISNULL( &op->o_conn->c_ndn ) )
1449 ndn = op->o_conn->c_ndn;
1454 if ( acl_mask_dnattr( op, e, val, a, b, i,
1455 matches, count, state,
1456 &b->a_realdn, &ndn ) )
1462 if ( !BER_BVISEMPTY( &b->a_group_pat ) ) {
1464 struct berval ndn = BER_BVNULL;
1467 if ( op->o_ndn.bv_len == 0 ) {
1471 Debug( LDAP_DEBUG_ACL, "<= check a_group_pat: %s\n",
1472 b->a_group_pat.bv_val, 0, 0 );
1474 /* b->a_group is an unexpanded entry name, expanded it should be an
1475 * entry with objectclass group* and we test to see if odn is one of
1476 * the values in the attribute group
1478 /* see if asker is listed in dnattr */
1479 if ( b->a_group_style == ACL_STYLE_EXPAND ) {
1480 char buf[ACL_BUF_SIZE];
1482 regmatch_t tmp_matches[2],
1483 *tmp_matchesp = tmp_matches;
1485 bv.bv_len = sizeof(buf) - 1;
1490 switch ( a->acl_dn_style ) {
1491 case ACL_STYLE_REGEX:
1492 if ( !BER_BVISNULL( &a->acl_dn_pat ) ) {
1493 tmp_matchesp = matches;
1494 tmp_nmatch = nmatch;
1498 /* FALLTHRU: applies also to ACL_STYLE_REGEX when pattern is "*" */
1499 case ACL_STYLE_BASE:
1500 tmp_matches[0].rm_so = 0;
1501 tmp_matches[0].rm_eo = e->e_nname.bv_len;
1506 case ACL_STYLE_SUBTREE:
1507 case ACL_STYLE_CHILDREN:
1508 tmp_matches[0].rm_so = 0;
1509 tmp_matches[0].rm_eo = e->e_nname.bv_len;
1510 tmp_matches[1].rm_so = e->e_nname.bv_len - a->acl_dn_pat.bv_len;
1511 tmp_matches[1].rm_eo = e->e_nname.bv_len;
1525 if ( acl_string_expand( &bv, &b->a_group_pat,
1527 tmp_nmatch, tmp_matchesp ) )
1532 if ( dnNormalize( 0, NULL, NULL, &bv, &ndn,
1533 op->o_tmpmemctx ) != LDAP_SUCCESS )
1535 /* did not expand to a valid dn */
1542 bv = b->a_group_pat;
1545 rc = backend_group( op, e, &bv, &op->o_ndn,
1546 b->a_group_oc, b->a_group_at );
1549 slap_sl_free( ndn.bv_val, op->o_tmpmemctx );
1557 if ( !BER_BVISEMPTY( &b->a_set_pat ) ) {
1559 char buf[ACL_BUF_SIZE];
1561 Debug( LDAP_DEBUG_ACL, "<= check a_set_pat: %s\n",
1562 b->a_set_pat.bv_val, 0, 0 );
1564 if ( b->a_set_style == ACL_STYLE_EXPAND ) {
1566 regmatch_t tmp_matches[2],
1567 *tmp_matchesp = tmp_matches;
1570 bv.bv_len = sizeof( buf ) - 1;
1575 switch ( a->acl_dn_style ) {
1576 case ACL_STYLE_REGEX:
1577 if ( !BER_BVISNULL( &a->acl_dn_pat ) ) {
1578 tmp_matchesp = matches;
1579 tmp_nmatch = nmatch;
1583 /* FALLTHRU: applies also to ACL_STYLE_REGEX when pattern is "*" */
1584 case ACL_STYLE_BASE:
1585 tmp_matches[0].rm_so = 0;
1586 tmp_matches[0].rm_eo = e->e_nname.bv_len;
1591 case ACL_STYLE_SUBTREE:
1592 case ACL_STYLE_CHILDREN:
1593 tmp_matches[0].rm_so = 0;
1594 tmp_matches[0].rm_eo = e->e_nname.bv_len;
1595 tmp_matches[1].rm_so = e->e_nname.bv_len - a->acl_dn_pat.bv_len;
1596 tmp_matches[1].rm_eo = e->e_nname.bv_len;
1610 if ( acl_string_expand( &bv, &b->a_set_pat,
1612 tmp_nmatch, tmp_matchesp ) )
1621 if ( acl_match_set( &bv, op, e, NULL ) == 0 ) {
1626 if ( b->a_authz.sai_ssf ) {
1627 Debug( LDAP_DEBUG_ACL, "<= check a_authz.sai_ssf: ACL %u > OP %u\n",
1628 b->a_authz.sai_ssf, op->o_ssf, 0 );
1629 if ( b->a_authz.sai_ssf > op->o_ssf ) {
1634 if ( b->a_authz.sai_transport_ssf ) {
1635 Debug( LDAP_DEBUG_ACL,
1636 "<= check a_authz.sai_transport_ssf: ACL %u > OP %u\n",
1637 b->a_authz.sai_transport_ssf, op->o_transport_ssf, 0 );
1638 if ( b->a_authz.sai_transport_ssf > op->o_transport_ssf ) {
1643 if ( b->a_authz.sai_tls_ssf ) {
1644 Debug( LDAP_DEBUG_ACL,
1645 "<= check a_authz.sai_tls_ssf: ACL %u > OP %u\n",
1646 b->a_authz.sai_tls_ssf, op->o_tls_ssf, 0 );
1647 if ( b->a_authz.sai_tls_ssf > op->o_tls_ssf ) {
1652 if ( b->a_authz.sai_sasl_ssf ) {
1653 Debug( LDAP_DEBUG_ACL,
1654 "<= check a_authz.sai_sasl_ssf: ACL %u > OP %u\n",
1655 b->a_authz.sai_sasl_ssf, op->o_sasl_ssf, 0 );
1656 if ( b->a_authz.sai_sasl_ssf > op->o_sasl_ssf ) {
1661 /* check for the "self" modifier in the <access> field */
1662 if ( b->a_dn.a_self ) {
1666 ACL_RECORD_VALUE_STATE;
1668 /* must have DN syntax */
1669 if ( desc->ad_type->sat_syntax != slap_schema.si_syn_distinguishedName &&
1670 !is_at_syntax( desc->ad_type, SLAPD_NAMEUID_SYNTAX )) continue;
1672 /* check if the target is an attribute. */
1673 if ( val == NULL ) continue;
1675 /* a DN must be present */
1676 if ( BER_BVISEMPTY( &op->o_ndn ) ) {
1680 /* target is attribute, check if the attribute value
1683 rc = value_match( &match, desc,
1684 desc->ad_type->sat_equality, 0,
1685 val, &op->o_ndn, &dummy );
1686 /* on match error or no match, fail the ACL clause */
1687 if ( rc != LDAP_SUCCESS || match != 0 )
1692 if ( b->a_dynacl ) {
1694 slap_access_t tgrant, tdeny;
1696 Debug( LDAP_DEBUG_ACL, "<= check a_dynacl\n",
1699 /* this case works different from the others above.
1700 * since dynamic ACL's themselves give permissions, we need
1701 * to first check b->a_access_mask, the ACL's access level.
1703 /* first check if the right being requested
1704 * is allowed by the ACL clause.
1706 if ( ! ACL_PRIV_ISSET( b->a_access_mask, a2pmask ) ) {
1710 /* start out with nothing granted, nothing denied */
1711 ACL_INVALIDATE(tgrant);
1712 ACL_INVALIDATE(tdeny);
1714 for ( da = b->a_dynacl; da; da = da->da_next ) {
1715 slap_access_t grant,
1718 ACL_INVALIDATE(grant);
1719 ACL_INVALIDATE(deny);
1721 Debug( LDAP_DEBUG_ACL, " <= check a_dynacl: %s\n",
1722 da->da_name, 0, 0 );
1724 (void)da->da_mask( da->da_private, op, e, desc,
1725 val, nmatch, matches, &grant, &deny );
1731 /* remove anything that the ACL clause does not allow */
1732 tgrant &= b->a_access_mask & ACL_PRIV_MASK;
1733 tdeny &= ACL_PRIV_MASK;
1735 /* see if we have anything to contribute */
1736 if( ACL_IS_INVALID(tgrant) && ACL_IS_INVALID(tdeny) ) {
1740 /* this could be improved by changing slap_acl_mask so that it can deal with
1741 * by clauses that return grant/deny pairs. Right now, it does either
1742 * additive or subtractive rights, but not both at the same time. So,
1743 * we need to combine the grant/deny pair into a single rights mask in
1744 * a smart way: if either grant or deny is "empty", then we use the
1745 * opposite as is, otherwise we remove any denied rights from the grant
1746 * rights mask and construct an additive mask.
1748 if (ACL_IS_INVALID(tdeny)) {
1749 modmask = tgrant | ACL_PRIV_ADDITIVE;
1751 } else if (ACL_IS_INVALID(tgrant)) {
1752 modmask = tdeny | ACL_PRIV_SUBSTRACTIVE;
1755 modmask = (tgrant & ~tdeny) | ACL_PRIV_ADDITIVE;
1759 #endif /* SLAP_DYNACL */
1761 modmask = b->a_access_mask;
1764 Debug( LDAP_DEBUG_ACL,
1765 "<= acl_mask: [%d] applying %s (%s)\n",
1766 i, accessmask2str( modmask, accessmaskbuf, 1 ),
1767 b->a_type == ACL_CONTINUE
1769 : b->a_type == ACL_BREAK
1775 if( ACL_IS_ADDITIVE(modmask) ) {
1777 ACL_PRIV_SET( *mask, modmask );
1780 ACL_PRIV_CLR( *mask, ~ACL_PRIV_MASK );
1782 } else if( ACL_IS_SUBTRACTIVE(modmask) ) {
1783 /* substract privs */
1784 ACL_PRIV_CLR( *mask, modmask );
1787 ACL_PRIV_CLR( *mask, ~ACL_PRIV_MASK );
1796 Debug( LDAP_DEBUG_ACL,
1797 "<= acl_mask: [%d] mask: %s\n",
1798 i, accessmask2str(*mask, accessmaskbuf, 1), 0 );
1800 if( b->a_type == ACL_CONTINUE ) {
1803 } else if ( b->a_type == ACL_BREAK ) {
1811 /* implicit "by * none" clause */
1814 Debug( LDAP_DEBUG_ACL,
1815 "<= acl_mask: no more <who> clauses, returning %s (stop)\n",
1816 accessmask2str(*mask, accessmaskbuf, 1), 0, 0 );
1821 * acl_check_modlist - check access control on the given entry to see if
1822 * it allows the given modifications by the user associated with op.
1823 * returns 1 if mods allowed ok
1824 * 0 mods not allowed
1831 Modifications *mlist )
1834 AccessControlState state = ACL_STATE_INIT;
1837 int ret = 1; /* default is access allowed */
1841 be = LDAP_STAILQ_FIRST(&backendDB);
1845 assert( be != NULL );
1847 /* short circuit root database access */
1848 if ( be_isroot( op ) ) {
1849 Debug( LDAP_DEBUG_ACL,
1850 "<= acl_access_allowed: granted to database root\n",
1855 /* use backend default access if no backend acls */
1856 if( op->o_bd != NULL && op->o_bd->be_acl == NULL ) {
1857 Debug( LDAP_DEBUG_ACL,
1858 "=> access_allowed: backend default %s access %s to \"%s\"\n",
1859 access2str( ACL_WRITE ),
1860 op->o_bd->be_dfltaccess >= ACL_WRITE
1861 ? "granted" : "denied",
1863 ret = (op->o_bd->be_dfltaccess >= ACL_WRITE);
1867 for ( ; mlist != NULL; mlist = mlist->sml_next ) {
1869 * Internal mods are ignored by ACL_WRITE checking
1871 if ( mlist->sml_flags & SLAP_MOD_INTERNAL ) {
1872 Debug( LDAP_DEBUG_ACL, "acl: internal mod %s:"
1873 " modify access granted\n",
1874 mlist->sml_desc->ad_cname.bv_val, 0, 0 );
1879 * no-user-modification operational attributes are ignored
1880 * by ACL_WRITE checking as any found here are not provided
1883 if ( is_at_no_user_mod( mlist->sml_desc->ad_type )
1884 && ! ( mlist->sml_flags & SLAP_MOD_MANAGING ) )
1886 Debug( LDAP_DEBUG_ACL, "acl: no-user-mod %s:"
1887 " modify access granted\n",
1888 mlist->sml_desc->ad_cname.bv_val, 0, 0 );
1892 switch ( mlist->sml_op ) {
1893 case LDAP_MOD_REPLACE:
1894 case LDAP_MOD_INCREMENT:
1896 * We must check both permission to delete the whole
1897 * attribute and permission to add the specific attributes.
1898 * This prevents abuse from selfwriters.
1900 if ( ! access_allowed( op, e,
1901 mlist->sml_desc, NULL,
1902 ( mlist->sml_flags & SLAP_MOD_MANAGING ) ? ACL_MANAGE : ACL_WDEL,
1909 if ( mlist->sml_values == NULL ) break;
1911 /* fall thru to check value to add */
1914 assert( mlist->sml_values != NULL );
1916 for ( bv = mlist->sml_nvalues
1917 ? mlist->sml_nvalues : mlist->sml_values;
1918 bv->bv_val != NULL; bv++ )
1920 if ( ! access_allowed( op, e,
1921 mlist->sml_desc, bv,
1922 ( mlist->sml_flags & SLAP_MOD_MANAGING ) ? ACL_MANAGE : ACL_WADD,
1931 case LDAP_MOD_DELETE:
1932 if ( mlist->sml_values == NULL ) {
1933 if ( ! access_allowed( op, e,
1934 mlist->sml_desc, NULL,
1935 ( mlist->sml_flags & SLAP_MOD_MANAGING ) ? ACL_MANAGE : ACL_WDEL,
1943 for ( bv = mlist->sml_nvalues
1944 ? mlist->sml_nvalues : mlist->sml_values;
1945 bv->bv_val != NULL; bv++ )
1947 if ( ! access_allowed( op, e,
1948 mlist->sml_desc, bv,
1949 ( mlist->sml_flags & SLAP_MOD_MANAGING ) ? ACL_MANAGE : ACL_WDEL,
1958 case SLAP_MOD_SOFTADD:
1959 /* allow adding attribute via modrdn thru */
1971 if (be_null) op->o_bd = NULL;
1977 struct berval *list,
1990 while ( len >= 0 && --ix >= 0 ) {
1991 while ( --len >= 0 && *p++ != sep )
1994 while ( len >= 0 && *p == ' ' ) {
2007 while ( --len >= 0 && *p != sep ) {
2011 while ( bv->bv_len > 0 && *--p == ' ' ) {
2018 typedef struct acl_set_gather_t {
2024 acl_set_cb_gather( Operation *op, SlapReply *rs )
2026 acl_set_gather_t *p = (acl_set_gather_t *)op->o_callback->sc_private;
2028 if ( rs->sr_type == REP_SEARCH ) {
2029 BerValue bvals[ 2 ];
2030 BerVarray bvalsp = NULL;
2033 for ( j = 0; !BER_BVISNULL( &rs->sr_attrs[ j ].an_name ); j++ ) {
2034 AttributeDescription *desc = rs->sr_attrs[ j ].an_desc;
2036 if ( desc == slap_schema.si_ad_entryDN ) {
2038 bvals[ 0 ] = rs->sr_entry->e_nname;
2039 BER_BVZERO( &bvals[ 1 ] );
2044 a = attr_find( rs->sr_entry->e_attrs, desc );
2048 for ( i = 0; !BER_BVISNULL( &a->a_nvals[ i ] ); i++ )
2051 bvalsp = a->a_nvals;
2057 p->bvals = slap_set_join( p->cookie, p->bvals,
2058 ( '|' | SLAP_SET_RREF ), bvalsp );
2062 assert( rs->sr_type == REP_RESULT );
2069 acl_set_gather( SetCookie *cookie, struct berval *name, AttributeDescription *desc )
2071 AclSetCookie *cp = (AclSetCookie *)cookie;
2073 LDAPURLDesc *ludp = NULL;
2074 Operation op2 = { 0 };
2075 SlapReply rs = {REP_RESULT};
2076 AttributeName anlist[ 2 ], *anlistp = NULL;
2078 slap_callback cb = { NULL, acl_set_cb_gather, NULL, NULL };
2079 acl_set_gather_t p = { 0 };
2080 const char *text = NULL;
2082 /* this routine needs to return the bervals instead of
2083 * plain strings, since syntax is not known. It should
2084 * also return the syntax or some "comparison cookie".
2086 if ( strncasecmp( name->bv_val, "ldap:///", STRLENOF( "ldap:///" ) ) != 0 ) {
2087 return acl_set_gather2( cookie, name, desc );
2090 rc = ldap_url_parse( name->bv_val, &ludp );
2091 if ( rc != LDAP_URL_SUCCESS ) {
2092 rc = LDAP_PROTOCOL_ERROR;
2096 if ( ( ludp->lud_host && ludp->lud_host[0] ) || ludp->lud_exts )
2098 /* host part must be empty */
2099 /* extensions parts must be empty */
2100 rc = LDAP_PROTOCOL_ERROR;
2104 /* Grab the searchbase and see if an appropriate database can be found */
2105 ber_str2bv( ludp->lud_dn, 0, 0, &op2.o_req_dn );
2106 rc = dnNormalize( 0, NULL, NULL, &op2.o_req_dn,
2107 &op2.o_req_ndn, cp->asc_op->o_tmpmemctx );
2108 BER_BVZERO( &op2.o_req_dn );
2109 if ( rc != LDAP_SUCCESS ) {
2113 op2.o_bd = select_backend( &op2.o_req_ndn, 1 );
2114 if ( ( op2.o_bd == NULL ) || ( op2.o_bd->be_search == NULL ) ) {
2115 rc = LDAP_NO_SUCH_OBJECT;
2119 /* Grab the filter */
2120 if ( ludp->lud_filter ) {
2121 ber_str2bv_x( ludp->lud_filter, 0, 0, &op2.ors_filterstr,
2122 cp->asc_op->o_tmpmemctx );
2123 op2.ors_filter = str2filter_x( cp->asc_op, op2.ors_filterstr.bv_val );
2124 if ( op2.ors_filter == NULL ) {
2125 rc = LDAP_PROTOCOL_ERROR;
2130 op2.ors_filterstr = *slap_filterstr_objectClass_pres;
2131 op2.ors_filter = slap_filter_objectClass_pres;
2135 /* Grab the scope */
2136 op2.ors_scope = ludp->lud_scope;
2138 /* Grap the attributes */
2139 if ( ludp->lud_attrs ) {
2140 for ( ; ludp->lud_attrs[ nattrs ]; nattrs++ )
2143 anlistp = slap_sl_malloc( sizeof( AttributeName ) * ( nattrs + 2 ),
2144 cp->asc_op->o_tmpmemctx );
2146 for ( ; ludp->lud_attrs[ nattrs ]; nattrs++ ) {
2147 ber_str2bv( ludp->lud_attrs[ nattrs ], 0, 0, &anlistp[ nattrs ].an_name );
2148 anlistp[ nattrs ].an_desc = NULL;
2149 rc = slap_bv2ad( &anlistp[ nattrs ].an_name,
2150 &anlistp[ nattrs ].an_desc, &text );
2151 if ( rc != LDAP_SUCCESS ) {
2160 anlistp[ nattrs ].an_name = desc->ad_cname;
2161 anlistp[ nattrs ].an_desc = desc;
2163 BER_BVZERO( &anlistp[ nattrs + 1 ].an_name );
2167 op2.o_hdr = cp->asc_op->o_hdr;
2168 op2.o_tag = LDAP_REQ_SEARCH;
2169 op2.o_ndn = op2.o_bd->be_rootndn;
2170 op2.o_callback = &cb;
2171 slap_op_time( &op2.o_time, &op2.o_tincr );
2172 op2.o_do_not_cache = 1;
2173 op2.o_is_auth_check = 0;
2174 ber_dupbv_x( &op2.o_req_dn, &op2.o_req_ndn, cp->asc_op->o_tmpmemctx );
2175 op2.ors_slimit = SLAP_NO_LIMIT;
2176 op2.ors_tlimit = SLAP_NO_LIMIT;
2177 op2.ors_attrs = anlistp;
2178 op2.ors_attrsonly = 0;
2179 op2.o_private = cp->asc_op->o_private;
2183 rc = op2.o_bd->be_search( &op2, &rs );
2189 if ( op2.ors_filter && op2.ors_filter != slap_filter_objectClass_pres ) {
2190 filter_free_x( cp->asc_op, op2.ors_filter );
2192 if ( !BER_BVISNULL( &op2.o_req_ndn ) ) {
2193 slap_sl_free( op2.o_req_ndn.bv_val, cp->asc_op->o_tmpmemctx );
2195 if ( !BER_BVISNULL( &op2.o_req_dn ) ) {
2196 slap_sl_free( op2.o_req_dn.bv_val, cp->asc_op->o_tmpmemctx );
2199 ldap_free_urldesc( ludp );
2201 if ( anlistp && anlistp != anlist ) {
2202 slap_sl_free( anlistp, cp->asc_op->o_tmpmemctx );
2209 acl_set_gather2( SetCookie *cookie, struct berval *name, AttributeDescription *desc )
2211 AclSetCookie *cp = (AclSetCookie *)cookie;
2212 BerVarray bvals = NULL;
2216 /* this routine needs to return the bervals instead of
2217 * plain strings, since syntax is not known. It should
2218 * also return the syntax or some "comparison cookie".
2220 rc = dnNormalize( 0, NULL, NULL, name, &ndn, cp->asc_op->o_tmpmemctx );
2221 if ( rc == LDAP_SUCCESS ) {
2222 if ( desc == slap_schema.si_ad_entryDN ) {
2223 bvals = (BerVarray)slap_sl_malloc( sizeof( BerValue ) * 2,
2224 cp->asc_op->o_tmpmemctx );
2226 BER_BVZERO( &bvals[ 1 ] );
2230 backend_attribute( cp->asc_op,
2231 cp->asc_e, &ndn, desc, &bvals, ACL_NONE );
2234 if ( !BER_BVISNULL( &ndn ) ) {
2235 slap_sl_free( ndn.bv_val, cp->asc_op->o_tmpmemctx );
2244 struct berval *subj,
2247 struct berval *default_set_attribute )
2249 struct berval set = BER_BVNULL;
2251 AclSetCookie cookie;
2253 if ( default_set_attribute == NULL ) {
2254 ber_dupbv_x( &set, subj, op->o_tmpmemctx );
2257 struct berval subjdn, ndn = BER_BVNULL;
2258 struct berval setat;
2259 BerVarray bvals = NULL;
2261 AttributeDescription *desc = NULL;
2263 /* format of string is "entry/setAttrName" */
2264 if ( acl_get_part( subj, 0, '/', &subjdn ) < 0 ) {
2268 if ( acl_get_part( subj, 1, '/', &setat ) < 0 ) {
2269 setat = *default_set_attribute;
2273 * NOTE: dnNormalize honors the ber_len field
2274 * as the length of the dn to be normalized
2276 if ( slap_bv2ad( &setat, &desc, &text ) == LDAP_SUCCESS ) {
2277 if ( dnNormalize( 0, NULL, NULL, &subjdn, &ndn, op->o_tmpmemctx ) == LDAP_SUCCESS )
2279 backend_attribute( op, e, &ndn, desc, &bvals, ACL_NONE );
2280 if ( bvals != NULL && !BER_BVISNULL( &bvals[0] ) ) {
2284 BER_BVZERO( &bvals[0] );
2285 for ( i = 1; !BER_BVISNULL( &bvals[i] ); i++ )
2287 bvals[0].bv_val = bvals[i-1].bv_val;
2288 BER_BVZERO( &bvals[i-1] );
2290 ber_bvarray_free_x( bvals, op->o_tmpmemctx );
2291 slap_sl_free( ndn.bv_val, op->o_tmpmemctx );
2296 if ( !BER_BVISNULL( &set ) ) {
2299 rc = ( slap_set_filter(
2301 (SetCookie *)&cookie, &set,
2302 &op->o_ndn, &e->e_nname, NULL ) > 0 );
2303 slap_sl_free( set.bv_val, op->o_tmpmemctx );
2312 * dynamic ACL infrastructure
2314 static slap_dynacl_t *da_list = NULL;
2317 slap_dynacl_register( slap_dynacl_t *da )
2321 for ( tmp = da_list; tmp; tmp = tmp->da_next ) {
2322 if ( strcasecmp( da->da_name, tmp->da_name ) == 0 ) {
2327 if ( tmp != NULL ) {
2331 if ( da->da_mask == NULL ) {
2335 da->da_private = NULL;
2336 da->da_next = da_list;
2342 static slap_dynacl_t *
2343 slap_dynacl_next( slap_dynacl_t *da )
2352 slap_dynacl_get( const char *name )
2356 for ( da = slap_dynacl_next( NULL ); da; da = slap_dynacl_next( da ) ) {
2357 if ( strcasecmp( da->da_name, name ) == 0 ) {
2364 #endif /* SLAP_DYNACL */
2367 * statically built-in dynamic ACL initialization
2369 static int (*acl_init_func[])( void ) = {
2371 /* TODO: remove when ACI will only be dynamic */
2372 #if SLAPD_ACI_ENABLED == SLAPD_MOD_STATIC
2374 #endif /* SLAPD_ACI_ENABLED */
2375 #endif /* SLAP_DYNACL */
2385 for ( i = 0; acl_init_func[ i ] != NULL; i++ ) {
2386 rc = (*(acl_init_func[ i ]))();
2401 regmatch_t *matches)
2409 bv->bv_val[0] = '\0';
2410 bv->bv_len--; /* leave space for lone $ */
2413 for ( dp = bv->bv_val, sp = pat->bv_val; size < bv->bv_len &&
2414 sp < pat->bv_val + pat->bv_len ; sp++ )
2416 /* did we previously see a $ */
2418 if ( flag == 1 && *sp == '$' ) {
2423 } else if ( flag == 1 && *sp == '{' /*'}'*/) {
2426 } else if ( *sp >= '0' && *sp <= '9' ) {
2434 for ( sp++; *sp != '\0' && *sp != /*'{'*/ '}'; sp++ ) {
2435 if ( *sp >= '0' && *sp <= '9' ) {
2436 n = 10*n + ( *sp - '0' );
2440 if ( *sp != /*'{'*/ '}' ) {
2446 if ( n >= nmatch ) {
2452 i = matches[n].rm_so;
2453 l = matches[n].rm_eo;
2454 for ( ; size < bv->bv_len && i < l; size++, i++ ) {
2472 /* must have ended with a single $ */
2480 Debug( LDAP_DEBUG_TRACE, "=> acl_string_expand: pattern: %.*s\n", (int)pat->bv_len, pat->bv_val, 0 );
2481 Debug( LDAP_DEBUG_TRACE, "=> acl_string_expand: expanded: %s\n", bv->bv_val, 0, 0 );
2488 struct berval *pat, /* pattern to expand and match against */
2489 char *str, /* string to match against pattern */
2490 char *buf, /* buffer with $N expansion variables */
2491 int nmatch, /* size of the matches array */
2492 regmatch_t *matches /* offsets in buffer for $N expansion variables */
2496 char newbuf[ACL_BUF_SIZE];
2500 bv.bv_len = sizeof( newbuf ) - 1;
2507 acl_string_expand( &bv, pat, buf, nmatch, matches );
2508 rc = regcomp( &re, newbuf, REG_EXTENDED|REG_ICASE );
2510 char error[ACL_BUF_SIZE];
2511 regerror( rc, &re, error, sizeof( error ) );
2513 Debug( LDAP_DEBUG_TRACE,
2514 "compile( \"%s\", \"%s\") failed %s\n",
2515 pat->bv_val, str, error );
2519 rc = regexec( &re, str, 0, NULL, 0 );
2522 Debug( LDAP_DEBUG_TRACE,
2523 "=> regex_matches: string: %s\n", str, 0, 0 );
2524 Debug( LDAP_DEBUG_TRACE,
2525 "=> regex_matches: rc: %d %s\n",
2526 rc, !rc ? "matches" : "no matches", 0 );