1 /* acl.c - routines to parse and check acl's */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 1998-2008 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,
67 slap_access_t access );
69 static int regex_matches(
70 struct berval *pat, char *str, char *buf,
71 int nmatch, regmatch_t *matches);
73 typedef struct AclSetCookie {
75 #define asc_op asc_cookie.set_op
79 SLAP_SET_GATHER acl_set_gather;
80 SLAP_SET_GATHER acl_set_gather2;
83 * access_allowed - check whether op->o_ndn is allowed the requested access
84 * to entry e, attribute attr, value val. if val is null, access to
85 * the whole attribute is assumed (all values).
87 * This routine loops through all access controls and calls
88 * slap_acl_mask() on each applicable access control.
89 * The loop exits when a definitive answer is reached or
90 * or no more controls remain.
97 * - can be legally called with op == NULL
98 * - can be legally called with op->o_bd == NULL
102 slap_access_always_allowed(
105 AttributeDescription *desc,
107 slap_access_t access,
108 AccessControlState *state,
111 assert( maskp != NULL );
114 ACL_LVL_ASSIGN_MANAGE( *maskp );
123 AttributeDescription *desc,
125 slap_access_t access,
126 AccessControlState *state,
131 AccessControl *a = NULL;
134 char accessmaskbuf[ACCESSMASK_MAXLEN];
137 slap_control_t control;
138 slap_access_t access_level;
140 regmatch_t matches[MAXREMATCHES];
142 assert( op != NULL );
144 assert( desc != NULL );
145 assert( maskp != NULL );
147 access_level = ACL_LEVEL( access );
148 attr = desc->ad_cname.bv_val;
150 assert( attr != NULL );
154 /* grant database root access */
155 if ( be_isroot( op ) ) {
156 Debug( LDAP_DEBUG_ACL, "<= root access granted\n", 0, 0, 0 );
157 mask = ACL_LVL_MANAGE;
162 * no-user-modification operational attributes are ignored
163 * by ACL_WRITE checking as any found here are not provided
166 * NOTE: but they are not ignored for ACL_MANAGE, because
167 * if we get here it means a non-root user is trying to
168 * manage data, so we need to check its privileges.
170 if ( access_level == ACL_WRITE
171 && is_at_no_user_mod( desc->ad_type )
172 && desc != slap_schema.si_ad_entry
173 && desc != slap_schema.si_ad_children )
175 Debug( LDAP_DEBUG_ACL, "NoUserMod Operational attribute:"
176 " %s access granted\n",
181 /* use backend default access if no backend acls */
182 if ( op->o_bd->be_acl == NULL ) {
185 Debug( LDAP_DEBUG_ACL,
186 "=> slap_access_allowed: backend default %s "
187 "access %s to \"%s\"\n",
188 access2str( access ),
189 op->o_bd->be_dfltaccess >= access_level ? "granted" : "denied",
190 op->o_dn.bv_val ? op->o_dn.bv_val : "(anonymous)" );
191 ret = op->o_bd->be_dfltaccess >= access_level;
193 mask = ACL_PRIV_LEVEL;
194 for ( i = ACL_NONE; i <= op->o_bd->be_dfltaccess; i++ ) {
195 ACL_PRIV_SET( mask, ACL_ACCESS2PRIV( i ) );
204 if ( state && state->as_vd_ad == desc ) {
205 a = state->as_vd_acl;
206 count = state->as_vd_acl_count;
209 if ( state ) state->as_vi_acl = NULL;
213 ACL_PRIV_ASSIGN( mask, *maskp );
214 memset( matches, '\0', sizeof( matches ) );
216 while ( ( a = slap_acl_get( a, &count, op, e, desc, val,
217 MAXREMATCHES, matches, state ) ) != NULL )
221 for ( i = 0; i < MAXREMATCHES && matches[i].rm_so > 0; i++ ) {
222 Debug( LDAP_DEBUG_ACL, "=> match[%d]: %d %d ", i,
223 (int)matches[i].rm_so, (int)matches[i].rm_eo );
224 if ( matches[i].rm_so <= matches[0].rm_eo ) {
226 for ( n = matches[i].rm_so; n < matches[i].rm_eo; n++ ) {
227 Debug( LDAP_DEBUG_ACL, "%c", e->e_ndn[n], 0, 0 );
230 Debug( LDAP_DEBUG_ARGS, "\n", 0, 0, 0 );
234 if ( state->as_vi_acl == a &&
235 ( state->as_recorded & ACL_STATE_RECORDED_NV ) )
237 Debug( LDAP_DEBUG_ACL,
238 "=> slap_access_allowed: result was in cache (%s)\n",
240 ret = state->as_result;
243 Debug( LDAP_DEBUG_ACL,
244 "=> slap_access_allowed: result not in cache (%s)\n",
249 control = slap_acl_mask( a, &mask, op,
250 e, desc, val, MAXREMATCHES, matches, count, state, access );
252 if ( control != ACL_BREAK ) {
256 memset( matches, '\0', sizeof( matches ) );
259 if ( ACL_IS_INVALID( mask ) ) {
260 Debug( LDAP_DEBUG_ACL,
261 "=> slap_access_allowed: \"%s\" (%s) invalid!\n",
263 ACL_PRIV_ASSIGN( mask, *maskp );
265 } else if ( control == ACL_BREAK ) {
266 Debug( LDAP_DEBUG_ACL,
267 "=> slap_access_allowed: no more rules\n", 0, 0, 0 );
272 ret = ACL_GRANT( mask, access );
274 Debug( LDAP_DEBUG_ACL,
275 "=> slap_access_allowed: %s access %s by %s\n",
276 access2str( access ), ret ? "granted" : "denied",
277 accessmask2str( mask, accessmaskbuf, 1 ) );
280 ACL_PRIV_ASSIGN( *maskp, mask );
288 AttributeDescription *desc,
290 slap_access_t access,
291 AccessControlState *state,
298 * NOTE: control gets here if FIXME
299 * if an appropriate backend cannot be selected for the operation,
300 * we assume that the frontend should handle this
301 * FIXME: should select_backend() take care of this,
302 * and return frontendDB instead of NULL? maybe for some value
307 if ( op->o_bd == NULL ) {
308 op->o_bd = select_backend( &op->o_req_ndn, 0 );
309 if ( op->o_bd == NULL )
310 op->o_bd = frontendDB;
312 rc = slap_access_allowed( op, e, desc, val, access, state, maskp );
322 AttributeDescription *desc,
324 slap_access_t access,
325 AccessControlState *state,
329 AccessControl *a = NULL;
333 char accessmaskbuf[ACCESSMASK_MAXLEN];
336 slap_access_t access_level;
338 static AccessControlState state_init = ACL_STATE_INIT;
341 assert( desc != NULL );
343 access_level = ACL_LEVEL( access );
345 assert( access_level > ACL_NONE );
348 if ( maskp ) ACL_INVALIDATE( *maskp );
350 attr = desc->ad_cname.bv_val;
352 assert( attr != NULL );
355 if ( op->o_acl_priv != ACL_NONE ) {
356 access = op->o_acl_priv;
358 } else if ( op->o_is_auth_check &&
359 ( access_level == ACL_SEARCH || access_level == ACL_READ ) )
363 } else if ( get_relax( op ) && access_level == ACL_WRITE &&
364 desc == slap_schema.si_ad_entry )
371 if ( state->as_vd_ad == desc ) {
372 if ( ( state->as_recorded & ACL_STATE_RECORDED_NV ) &&
375 return state->as_result;
383 Debug( LDAP_DEBUG_ACL,
384 "=> access_allowed: %s access to \"%s\" \"%s\" requested\n",
385 access2str( access ), e->e_dn, attr );
392 if ( op->o_bd == NULL ) {
393 op->o_bd = LDAP_STAILQ_FIRST( &backendDB );
396 /* FIXME: experimental; use first backend rules
397 * iff there is no global_acl (ITS#3100)
399 if ( frontendDB->be_acl != NULL ) {
400 op->o_bd = frontendDB;
403 assert( op->o_bd != NULL );
405 /* this is enforced in backend_add() */
406 if ( op->o_bd->bd_info->bi_access_allowed ) {
407 /* delegate to backend */
408 ret = op->o_bd->bd_info->bi_access_allowed( op, e,
409 desc, val, access, state, &mask );
412 /* use default (but pass through frontend
413 * for global ACL overlays) */
414 ret = frontendDB->bd_info->bi_access_allowed( op, e,
415 desc, val, access, state, &mask );
419 if ( ACL_IS_INVALID( mask ) ) {
420 Debug( LDAP_DEBUG_ACL,
421 "=> access_allowed: \"%s\" (%s) invalid!\n",
426 Debug( LDAP_DEBUG_ACL,
427 "=> access_allowed: no more rules\n", 0, 0, 0 );
433 Debug( LDAP_DEBUG_ACL,
434 "=> access_allowed: %s access %s by %s\n",
435 access2str( access ), ret ? "granted" : "denied",
436 accessmask2str( mask, accessmaskbuf, 1 ) );
439 if ( state != NULL ) {
440 /* If not value-dependent, save ACL in case of more attrs */
441 if ( !( state->as_recorded & ACL_STATE_RECORDED_VD ) ) {
442 state->as_vi_acl = a;
443 state->as_result = ret;
445 state->as_recorded |= ACL_STATE_RECORDED;
446 state->as_vd_ad = desc;
448 if ( be_null ) op->o_bd = NULL;
449 if ( maskp ) ACL_PRIV_ASSIGN( *maskp, mask );
455 * slap_acl_get - return the acl applicable to entry e, attribute
456 * attr. the acl returned is suitable for use in subsequent calls to
457 * acl_access_allowed().
460 static AccessControl *
466 AttributeDescription *desc,
470 AccessControlState *state )
477 assert( count != NULL );
478 assert( desc != NULL );
480 attr = desc->ad_cname.bv_val;
482 assert( attr != NULL );
485 if( op->o_bd == NULL ) {
486 a = frontendDB->be_acl;
488 a = op->o_bd->be_acl;
499 dnlen = e->e_nname.bv_len;
501 for ( ; a != NULL; prev = a, a = a->acl_next ) {
504 if ( a->acl_dn_pat.bv_len || ( a->acl_dn_style != ACL_STYLE_REGEX )) {
505 if ( a->acl_dn_style == ACL_STYLE_REGEX ) {
506 Debug( LDAP_DEBUG_ACL, "=> dnpat: [%d] %s nsub: %d\n",
507 *count, a->acl_dn_pat.bv_val, (int) a->acl_dn_re.re_nsub );
508 if (regexec(&a->acl_dn_re, e->e_ndn, nmatch, matches, 0))
512 Debug( LDAP_DEBUG_ACL, "=> dn: [%d] %s\n",
513 *count, a->acl_dn_pat.bv_val, 0 );
514 patlen = a->acl_dn_pat.bv_len;
515 if ( dnlen < patlen )
518 if ( a->acl_dn_style == ACL_STYLE_BASE ) {
519 /* base dn -- entire object DN must match */
520 if ( dnlen != patlen )
523 } else if ( a->acl_dn_style == ACL_STYLE_ONE ) {
524 ber_len_t rdnlen = 0;
527 if ( dnlen <= patlen )
531 if ( !DN_SEPARATOR( e->e_ndn[dnlen - patlen - 1] ) )
536 rdnlen = dn_rdnlen( NULL, &e->e_nname );
537 if ( rdnlen != dnlen - patlen - sep )
540 } else if ( a->acl_dn_style == ACL_STYLE_SUBTREE ) {
541 if ( dnlen > patlen && !DN_SEPARATOR( e->e_ndn[dnlen - patlen - 1] ) )
544 } else if ( a->acl_dn_style == ACL_STYLE_CHILDREN ) {
545 if ( dnlen <= patlen )
547 if ( !DN_SEPARATOR( e->e_ndn[dnlen - patlen - 1] ) )
551 if ( strcmp( a->acl_dn_pat.bv_val, e->e_ndn + dnlen - patlen ) != 0 )
555 Debug( LDAP_DEBUG_ACL, "=> acl_get: [%d] matched\n",
559 if ( a->acl_attrs && !ad_inlist( desc, a->acl_attrs ) ) {
560 matches[0].rm_so = matches[0].rm_eo = -1;
564 /* Is this ACL only for a specific value? */
565 if ( a->acl_attrval.bv_len ) {
570 if( state && !( state->as_recorded & ACL_STATE_RECORDED_VD )) {
571 state->as_recorded |= ACL_STATE_RECORDED_VD;
572 state->as_vd_acl = prev;
573 state->as_vd_acl_count = *count - 1;
576 if ( a->acl_attrval_style == ACL_STYLE_REGEX ) {
577 Debug( LDAP_DEBUG_ACL,
578 "acl_get: valpat %s\n",
579 a->acl_attrval.bv_val, 0, 0 );
580 if ( regexec( &a->acl_attrval_re, val->bv_val, 0, NULL, 0 ) )
588 Debug( LDAP_DEBUG_ACL,
590 a->acl_attrval.bv_val, 0, 0 );
592 if ( a->acl_attrs[0].an_desc->ad_type->sat_syntax != slap_schema.si_syn_distinguishedName ) {
593 if (value_match( &match, desc,
594 a->acl_attrval_mr, 0,
595 val, &a->acl_attrval, &text ) != LDAP_SUCCESS ||
602 patlen = a->acl_attrval.bv_len;
603 vdnlen = val->bv_len;
605 if ( vdnlen < patlen )
608 if ( a->acl_attrval_style == ACL_STYLE_BASE ) {
609 if ( vdnlen > patlen )
612 } else if ( a->acl_attrval_style == ACL_STYLE_ONE ) {
613 ber_len_t rdnlen = 0;
615 if ( !DN_SEPARATOR( val->bv_val[vdnlen - patlen - 1] ) )
618 rdnlen = dn_rdnlen( NULL, val );
619 if ( rdnlen != vdnlen - patlen - 1 )
622 } else if ( a->acl_attrval_style == ACL_STYLE_SUBTREE ) {
623 if ( vdnlen > patlen && !DN_SEPARATOR( val->bv_val[vdnlen - patlen - 1] ) )
626 } else if ( a->acl_attrval_style == ACL_STYLE_CHILDREN ) {
627 if ( vdnlen <= patlen )
630 if ( !DN_SEPARATOR( val->bv_val[vdnlen - patlen - 1] ) )
634 if ( strcmp( a->acl_attrval.bv_val, val->bv_val + vdnlen - patlen ) )
640 if ( a->acl_filter != NULL ) {
641 ber_int_t rc = test_filter( NULL, e, a->acl_filter );
642 if ( rc != LDAP_COMPARE_TRUE ) {
647 Debug( LDAP_DEBUG_ACL, "=> acl_get: [%d] attr %s\n",
652 Debug( LDAP_DEBUG_ACL, "<= acl_get: done.\n", 0, 0, 0 );
657 * Record value-dependent access control state
659 #define ACL_RECORD_VALUE_STATE do { \
660 if( state && !( state->as_recorded & ACL_STATE_RECORDED_VD )) { \
661 state->as_recorded |= ACL_STATE_RECORDED_VD; \
662 state->as_vd_acl = a; \
663 state->as_vd_acl_count = count; \
671 AttributeDescription *desc,
677 struct berval *opndn )
680 * if access applies to the entry itself, and the
681 * user is bound as somebody in the same namespace as
682 * the entry, OR the given dn matches the dn pattern
685 * NOTE: styles "anonymous", "users" and "self"
686 * have been moved to enum slap_style_t, whose
687 * value is set in a_dn_style; however, the string
688 * is maintained in a_dn_pat.
691 if ( bdn->a_style == ACL_STYLE_ANONYMOUS ) {
692 if ( !BER_BVISEMPTY( opndn ) ) {
696 } else if ( bdn->a_style == ACL_STYLE_USERS ) {
697 if ( BER_BVISEMPTY( opndn ) ) {
701 } else if ( bdn->a_style == ACL_STYLE_SELF ) {
702 struct berval ndn, selfndn;
705 if ( BER_BVISEMPTY( opndn ) || BER_BVISNULL( &e->e_nname ) ) {
709 level = bdn->a_self_level;
717 selfndn = e->e_nname;
720 for ( ; level > 0; level-- ) {
721 if ( BER_BVISEMPTY( &ndn ) ) {
724 dnParent( &ndn, &ndn );
727 if ( BER_BVISEMPTY( &ndn ) || !dn_match( &ndn, &selfndn ) )
732 } else if ( bdn->a_style == ACL_STYLE_REGEX ) {
733 if ( !ber_bvccmp( &bdn->a_pat, '*' ) ) {
735 regmatch_t tmp_matches[2],
736 *tmp_matchesp = tmp_matches;
740 switch ( a->acl_dn_style ) {
741 case ACL_STYLE_REGEX:
742 if ( !BER_BVISNULL( &a->acl_dn_pat ) ) {
743 tmp_matchesp = matches;
747 /* FALLTHRU: applies also to ACL_STYLE_REGEX when pattern is "*" */
750 tmp_matches[0].rm_so = 0;
751 tmp_matches[0].rm_eo = e->e_nname.bv_len;
756 case ACL_STYLE_SUBTREE:
757 case ACL_STYLE_CHILDREN:
758 tmp_matches[0].rm_so = 0;
759 tmp_matches[0].rm_eo = e->e_nname.bv_len;
760 tmp_matches[1].rm_so = e->e_nname.bv_len - a->acl_dn_pat.bv_len;
761 tmp_matches[1].rm_eo = e->e_nname.bv_len;
775 if ( !regex_matches( &bdn->a_pat, opndn->bv_val,
776 e->e_ndn, tmp_nmatch, tmp_matchesp ) )
784 ber_len_t patlen, odnlen;
787 if ( e->e_dn == NULL )
790 if ( bdn->a_expand ) {
792 char buf[ACL_BUF_SIZE];
795 regmatch_t tmp_matches[2],
796 *tmp_matchesp = tmp_matches;
800 bv.bv_len = sizeof( buf ) - 1;
803 switch ( a->acl_dn_style ) {
804 case ACL_STYLE_REGEX:
805 if ( !BER_BVISNULL( &a->acl_dn_pat ) ) {
806 tmp_matchesp = matches;
810 /* FALLTHRU: applies also to ACL_STYLE_REGEX when pattern is "*" */
813 tmp_matches[0].rm_so = 0;
814 tmp_matches[0].rm_eo = e->e_nname.bv_len;
819 case ACL_STYLE_SUBTREE:
820 case ACL_STYLE_CHILDREN:
821 tmp_matches[0].rm_so = 0;
822 tmp_matches[0].rm_eo = e->e_nname.bv_len;
823 tmp_matches[1].rm_so = e->e_nname.bv_len - a->acl_dn_pat.bv_len;
824 tmp_matches[1].rm_eo = e->e_nname.bv_len;
838 if ( acl_string_expand( &bv, &bdn->a_pat,
840 tmp_nmatch, tmp_matchesp ) )
845 if ( dnNormalize(0, NULL, NULL, &bv,
846 &pat, op->o_tmpmemctx )
849 /* did not expand to a valid dn */
858 odnlen = opndn->bv_len;
859 if ( odnlen < patlen ) {
860 goto dn_match_cleanup;
864 if ( bdn->a_style == ACL_STYLE_BASE ) {
865 /* base dn -- entire object DN must match */
866 if ( odnlen != patlen ) {
867 goto dn_match_cleanup;
870 } else if ( bdn->a_style == ACL_STYLE_ONE ) {
871 ber_len_t rdnlen = 0;
873 if ( odnlen <= patlen ) {
874 goto dn_match_cleanup;
877 if ( !DN_SEPARATOR( opndn->bv_val[odnlen - patlen - 1] ) ) {
878 goto dn_match_cleanup;
881 rdnlen = dn_rdnlen( NULL, opndn );
882 if ( rdnlen - ( odnlen - patlen - 1 ) != 0 ) {
883 goto dn_match_cleanup;
886 } else if ( bdn->a_style == ACL_STYLE_SUBTREE ) {
887 if ( odnlen > patlen && !DN_SEPARATOR( opndn->bv_val[odnlen - patlen - 1] ) ) {
888 goto dn_match_cleanup;
891 } else if ( bdn->a_style == ACL_STYLE_CHILDREN ) {
892 if ( odnlen <= patlen ) {
893 goto dn_match_cleanup;
896 if ( !DN_SEPARATOR( opndn->bv_val[odnlen - patlen - 1] ) ) {
897 goto dn_match_cleanup;
900 } else if ( bdn->a_style == ACL_STYLE_LEVEL ) {
901 int level = bdn->a_level;
904 if ( odnlen <= patlen ) {
905 goto dn_match_cleanup;
908 if ( level > 0 && !DN_SEPARATOR( opndn->bv_val[odnlen - patlen - 1] ) )
910 goto dn_match_cleanup;
914 for ( ; level > 0; level-- ) {
915 if ( BER_BVISEMPTY( &ndn ) ) {
916 goto dn_match_cleanup;
918 dnParent( &ndn, &ndn );
919 if ( ndn.bv_len < patlen ) {
920 goto dn_match_cleanup;
924 if ( ndn.bv_len != patlen ) {
925 goto dn_match_cleanup;
929 got_match = !strcmp( pat.bv_val, &opndn->bv_val[ odnlen - patlen ] );
932 if ( pat.bv_val != bdn->a_pat.bv_val ) {
933 slap_sl_free( pat.bv_val, op->o_tmpmemctx );
954 AccessControlState *state,
956 struct berval *opndn )
962 const char *attr = bdn->a_at->ad_cname.bv_val;
964 assert( attr != NULL );
966 if ( BER_BVISEMPTY( opndn ) ) {
970 Debug( LDAP_DEBUG_ACL, "<= check a_dn_at: %s\n", attr, 0, 0 );
973 /* see if asker is listed in dnattr */
974 for ( at = attrs_find( e->e_attrs, bdn->a_at );
976 at = attrs_find( at->a_next, bdn->a_at ) )
978 if ( attr_valfind( at,
979 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
980 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
981 &bv, NULL, 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,
1058 slap_access_t access )
1063 char accessmaskbuf[ACCESSMASK_MAXLEN];
1066 slap_mask_t a2pmask = ACL_ACCESS2PRIV( access );
1068 assert( a != NULL );
1069 assert( mask != NULL );
1070 assert( desc != NULL );
1072 attr = desc->ad_cname.bv_val;
1074 assert( attr != NULL );
1076 Debug( LDAP_DEBUG_ACL,
1077 "=> acl_mask: access to entry \"%s\", attr \"%s\" requested\n",
1080 Debug( LDAP_DEBUG_ACL,
1081 "=> acl_mask: to %s by \"%s\", (%s) \n",
1082 val ? "value" : "all values",
1083 op->o_ndn.bv_val ? op->o_ndn.bv_val : "",
1084 accessmask2str( *mask, accessmaskbuf, 1 ) );
1090 for ( ; b != NULL; b = b->a_next, i++ ) {
1091 slap_mask_t oldmask, modmask;
1093 ACL_INVALIDATE( modmask );
1095 /* AND <who> clauses */
1096 if ( !BER_BVISEMPTY( &b->a_dn_pat ) ) {
1097 Debug( LDAP_DEBUG_ACL, "<= check a_dn_pat: %s\n",
1098 b->a_dn_pat.bv_val, 0, 0);
1100 * if access applies to the entry itself, and the
1101 * user is bound as somebody in the same namespace as
1102 * the entry, OR the given dn matches the dn pattern
1105 * NOTE: styles "anonymous", "users" and "self"
1106 * have been moved to enum slap_style_t, whose
1107 * value is set in a_dn_style; however, the string
1108 * is maintained in a_dn_pat.
1111 if ( acl_mask_dn( op, e, desc, val, a, nmatch, matches,
1112 &b->a_dn, &op->o_ndn ) )
1118 if ( !BER_BVISEMPTY( &b->a_realdn_pat ) ) {
1121 Debug( LDAP_DEBUG_ACL, "<= check a_realdn_pat: %s\n",
1122 b->a_realdn_pat.bv_val, 0, 0);
1124 * if access applies to the entry itself, and the
1125 * user is bound as somebody in the same namespace as
1126 * the entry, OR the given dn matches the dn pattern
1129 * NOTE: styles "anonymous", "users" and "self"
1130 * have been moved to enum slap_style_t, whose
1131 * value is set in a_dn_style; however, the string
1132 * is maintained in a_dn_pat.
1135 if ( op->o_conn && !BER_BVISNULL( &op->o_conn->c_ndn ) )
1137 ndn = op->o_conn->c_ndn;
1142 if ( acl_mask_dn( op, e, desc, val, a, nmatch, matches,
1143 &b->a_realdn, &ndn ) )
1149 if ( !BER_BVISEMPTY( &b->a_sockurl_pat ) ) {
1150 if ( ! op->o_conn->c_listener ) {
1153 Debug( LDAP_DEBUG_ACL, "<= check a_sockurl_pat: %s\n",
1154 b->a_sockurl_pat.bv_val, 0, 0 );
1156 if ( !ber_bvccmp( &b->a_sockurl_pat, '*' ) ) {
1157 if ( b->a_sockurl_style == ACL_STYLE_REGEX) {
1158 if (!regex_matches( &b->a_sockurl_pat, op->o_conn->c_listener_url.bv_val,
1159 e->e_ndn, nmatch, matches ) )
1164 } else if ( b->a_sockurl_style == ACL_STYLE_EXPAND ) {
1166 char buf[ACL_BUF_SIZE];
1168 bv.bv_len = sizeof( buf ) - 1;
1170 if ( acl_string_expand( &bv, &b->a_sockurl_pat,
1171 e->e_ndn, nmatch, matches ) )
1176 if ( ber_bvstrcasecmp( &bv, &op->o_conn->c_listener_url ) != 0 )
1182 if ( ber_bvstrcasecmp( &b->a_sockurl_pat, &op->o_conn->c_listener_url ) != 0 )
1190 if ( !BER_BVISEMPTY( &b->a_domain_pat ) ) {
1191 if ( !op->o_conn->c_peer_domain.bv_val ) {
1194 Debug( LDAP_DEBUG_ACL, "<= check a_domain_pat: %s\n",
1195 b->a_domain_pat.bv_val, 0, 0 );
1196 if ( !ber_bvccmp( &b->a_domain_pat, '*' ) ) {
1197 if ( b->a_domain_style == ACL_STYLE_REGEX) {
1198 if (!regex_matches( &b->a_domain_pat, op->o_conn->c_peer_domain.bv_val,
1199 e->e_ndn, nmatch, matches ) )
1204 char buf[ACL_BUF_SIZE];
1206 struct berval cmp = op->o_conn->c_peer_domain;
1207 struct berval pat = b->a_domain_pat;
1209 if ( b->a_domain_expand ) {
1212 bv.bv_len = sizeof(buf) - 1;
1215 if ( acl_string_expand(&bv, &b->a_domain_pat,
1216 e->e_ndn, nmatch, matches) )
1223 if ( b->a_domain_style == ACL_STYLE_SUBTREE ) {
1224 int offset = cmp.bv_len - pat.bv_len;
1229 if ( offset == 1 || ( offset > 1 && cmp.bv_val[ offset - 1 ] != '.' ) ) {
1233 /* trim the domain */
1234 cmp.bv_val = &cmp.bv_val[ offset ];
1235 cmp.bv_len -= offset;
1238 if ( ber_bvstrcasecmp( &pat, &cmp ) != 0 ) {
1245 if ( !BER_BVISEMPTY( &b->a_peername_pat ) ) {
1246 if ( !op->o_conn->c_peer_name.bv_val ) {
1249 Debug( LDAP_DEBUG_ACL, "<= check a_peername_path: %s\n",
1250 b->a_peername_pat.bv_val, 0, 0 );
1251 if ( !ber_bvccmp( &b->a_peername_pat, '*' ) ) {
1252 if ( b->a_peername_style == ACL_STYLE_REGEX ) {
1253 if (!regex_matches( &b->a_peername_pat, op->o_conn->c_peer_name.bv_val,
1254 e->e_ndn, nmatch, matches ) )
1260 /* try exact match */
1261 if ( b->a_peername_style == ACL_STYLE_BASE ) {
1262 if ( ber_bvstrcasecmp( &b->a_peername_pat, &op->o_conn->c_peer_name ) != 0 ) {
1266 } else if ( b->a_peername_style == ACL_STYLE_EXPAND ) {
1268 char buf[ACL_BUF_SIZE];
1270 bv.bv_len = sizeof( buf ) - 1;
1272 if ( acl_string_expand( &bv, &b->a_peername_pat,
1273 e->e_ndn, nmatch, matches ) )
1278 if ( ber_bvstrcasecmp( &bv, &op->o_conn->c_peer_name ) != 0 ) {
1282 /* extract IP and try exact match */
1283 } else if ( b->a_peername_style == ACL_STYLE_IP ) {
1285 char buf[STRLENOF("255.255.255.255") + 1];
1288 int port_number = -1;
1290 if ( strncasecmp( op->o_conn->c_peer_name.bv_val,
1291 acl_bv_ip_eq.bv_val,
1292 acl_bv_ip_eq.bv_len ) != 0 )
1295 ip.bv_val = op->o_conn->c_peer_name.bv_val + acl_bv_ip_eq.bv_len;
1296 ip.bv_len = op->o_conn->c_peer_name.bv_len - acl_bv_ip_eq.bv_len;
1298 port = strrchr( ip.bv_val, ':' );
1300 ip.bv_len = port - ip.bv_val;
1302 if ( lutil_atoi( &port_number, port ) != 0 )
1306 /* the port check can be anticipated here */
1307 if ( b->a_peername_port != -1 && port_number != b->a_peername_port )
1310 /* address longer than expected? */
1311 if ( ip.bv_len >= sizeof(buf) )
1314 AC_MEMCPY( buf, ip.bv_val, ip.bv_len );
1315 buf[ ip.bv_len ] = '\0';
1317 addr = inet_addr( buf );
1319 /* unable to convert? */
1320 if ( addr == (unsigned long)(-1) )
1323 if ( (addr & b->a_peername_mask) != b->a_peername_addr )
1326 #ifdef LDAP_PF_INET6
1327 /* extract IPv6 and try exact match */
1328 } else if ( b->a_peername_style == ACL_STYLE_IPV6 ) {
1330 char buf[STRLENOF("FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF") + 1];
1332 struct in6_addr addr;
1333 int port_number = -1;
1335 if ( strncasecmp( op->o_conn->c_peer_name.bv_val,
1336 acl_bv_ipv6_eq.bv_val,
1337 acl_bv_ipv6_eq.bv_len ) != 0 )
1340 ip.bv_val = op->o_conn->c_peer_name.bv_val + acl_bv_ipv6_eq.bv_len;
1341 ip.bv_len = op->o_conn->c_peer_name.bv_len - acl_bv_ipv6_eq.bv_len;
1343 port = strrchr( ip.bv_val, ']' );
1345 ip.bv_len = port - ip.bv_val;
1347 if ( port[0] == ':' && lutil_atoi( &port_number, ++port ) != 0 )
1351 /* the port check can be anticipated here */
1352 if ( b->a_peername_port != -1 && port_number != b->a_peername_port )
1355 /* address longer than expected? */
1356 if ( ip.bv_len >= sizeof(buf) )
1359 AC_MEMCPY( buf, ip.bv_val, ip.bv_len );
1360 buf[ ip.bv_len ] = '\0';
1362 if ( inet_pton( AF_INET6, buf, &addr ) != 1 )
1366 if ( !slap_addr6_mask( &addr, &b->a_peername_mask6, &b->a_peername_addr6 ) )
1368 #endif /* LDAP_PF_INET6 */
1370 #ifdef LDAP_PF_LOCAL
1371 /* extract path and try exact match */
1372 } else if ( b->a_peername_style == ACL_STYLE_PATH ) {
1375 if ( strncmp( op->o_conn->c_peer_name.bv_val,
1376 acl_bv_path_eq.bv_val,
1377 acl_bv_path_eq.bv_len ) != 0 )
1380 path.bv_val = op->o_conn->c_peer_name.bv_val
1381 + acl_bv_path_eq.bv_len;
1382 path.bv_len = op->o_conn->c_peer_name.bv_len
1383 - acl_bv_path_eq.bv_len;
1385 if ( ber_bvcmp( &b->a_peername_pat, &path ) != 0 )
1388 #endif /* LDAP_PF_LOCAL */
1390 /* exact match (very unlikely...) */
1391 } else if ( ber_bvcmp( &op->o_conn->c_peer_name, &b->a_peername_pat ) != 0 ) {
1398 if ( !BER_BVISEMPTY( &b->a_sockname_pat ) ) {
1399 if ( BER_BVISNULL( &op->o_conn->c_sock_name ) ) {
1402 Debug( LDAP_DEBUG_ACL, "<= check a_sockname_path: %s\n",
1403 b->a_sockname_pat.bv_val, 0, 0 );
1404 if ( !ber_bvccmp( &b->a_sockname_pat, '*' ) ) {
1405 if ( b->a_sockname_style == ACL_STYLE_REGEX) {
1406 if (!regex_matches( &b->a_sockname_pat, op->o_conn->c_sock_name.bv_val,
1407 e->e_ndn, nmatch, matches ) )
1412 } else if ( b->a_sockname_style == ACL_STYLE_EXPAND ) {
1414 char buf[ACL_BUF_SIZE];
1416 bv.bv_len = sizeof( buf ) - 1;
1418 if ( acl_string_expand( &bv, &b->a_sockname_pat,
1419 e->e_ndn, nmatch, matches ) )
1424 if ( ber_bvstrcasecmp( &bv, &op->o_conn->c_sock_name ) != 0 ) {
1429 if ( ber_bvstrcasecmp( &b->a_sockname_pat, &op->o_conn->c_sock_name ) != 0 ) {
1436 if ( b->a_dn_at != NULL ) {
1437 if ( acl_mask_dnattr( op, e, val, a, b, i,
1438 matches, count, state,
1439 &b->a_dn, &op->o_ndn ) )
1445 if ( b->a_realdn_at != NULL ) {
1448 if ( op->o_conn && !BER_BVISNULL( &op->o_conn->c_ndn ) )
1450 ndn = op->o_conn->c_ndn;
1455 if ( acl_mask_dnattr( op, e, val, a, b, i,
1456 matches, count, state,
1457 &b->a_realdn, &ndn ) )
1463 if ( !BER_BVISEMPTY( &b->a_group_pat ) ) {
1465 struct berval ndn = BER_BVNULL;
1468 if ( op->o_ndn.bv_len == 0 ) {
1472 Debug( LDAP_DEBUG_ACL, "<= check a_group_pat: %s\n",
1473 b->a_group_pat.bv_val, 0, 0 );
1475 /* b->a_group is an unexpanded entry name, expanded it should be an
1476 * entry with objectclass group* and we test to see if odn is one of
1477 * the values in the attribute group
1479 /* see if asker is listed in dnattr */
1480 if ( b->a_group_style == ACL_STYLE_EXPAND ) {
1481 char buf[ACL_BUF_SIZE];
1483 regmatch_t tmp_matches[2],
1484 *tmp_matchesp = tmp_matches;
1486 bv.bv_len = sizeof(buf) - 1;
1491 switch ( a->acl_dn_style ) {
1492 case ACL_STYLE_REGEX:
1493 if ( !BER_BVISNULL( &a->acl_dn_pat ) ) {
1494 tmp_matchesp = matches;
1495 tmp_nmatch = nmatch;
1499 /* FALLTHRU: applies also to ACL_STYLE_REGEX when pattern is "*" */
1500 case ACL_STYLE_BASE:
1501 tmp_matches[0].rm_so = 0;
1502 tmp_matches[0].rm_eo = e->e_nname.bv_len;
1507 case ACL_STYLE_SUBTREE:
1508 case ACL_STYLE_CHILDREN:
1509 tmp_matches[0].rm_so = 0;
1510 tmp_matches[0].rm_eo = e->e_nname.bv_len;
1511 tmp_matches[1].rm_so = e->e_nname.bv_len - a->acl_dn_pat.bv_len;
1512 tmp_matches[1].rm_eo = e->e_nname.bv_len;
1526 if ( acl_string_expand( &bv, &b->a_group_pat,
1528 tmp_nmatch, tmp_matchesp ) )
1533 if ( dnNormalize( 0, NULL, NULL, &bv, &ndn,
1534 op->o_tmpmemctx ) != LDAP_SUCCESS )
1536 /* did not expand to a valid dn */
1543 bv = b->a_group_pat;
1546 rc = backend_group( op, e, &bv, &op->o_ndn,
1547 b->a_group_oc, b->a_group_at );
1550 slap_sl_free( ndn.bv_val, op->o_tmpmemctx );
1558 if ( !BER_BVISEMPTY( &b->a_set_pat ) ) {
1560 char buf[ACL_BUF_SIZE];
1562 Debug( LDAP_DEBUG_ACL, "<= check a_set_pat: %s\n",
1563 b->a_set_pat.bv_val, 0, 0 );
1565 if ( b->a_set_style == ACL_STYLE_EXPAND ) {
1567 regmatch_t tmp_matches[2],
1568 *tmp_matchesp = tmp_matches;
1571 bv.bv_len = sizeof( buf ) - 1;
1576 switch ( a->acl_dn_style ) {
1577 case ACL_STYLE_REGEX:
1578 if ( !BER_BVISNULL( &a->acl_dn_pat ) ) {
1579 tmp_matchesp = matches;
1580 tmp_nmatch = nmatch;
1584 /* FALLTHRU: applies also to ACL_STYLE_REGEX when pattern is "*" */
1585 case ACL_STYLE_BASE:
1586 tmp_matches[0].rm_so = 0;
1587 tmp_matches[0].rm_eo = e->e_nname.bv_len;
1592 case ACL_STYLE_SUBTREE:
1593 case ACL_STYLE_CHILDREN:
1594 tmp_matches[0].rm_so = 0;
1595 tmp_matches[0].rm_eo = e->e_nname.bv_len;
1596 tmp_matches[1].rm_so = e->e_nname.bv_len - a->acl_dn_pat.bv_len;
1597 tmp_matches[1].rm_eo = e->e_nname.bv_len;
1611 if ( acl_string_expand( &bv, &b->a_set_pat,
1613 tmp_nmatch, tmp_matchesp ) )
1622 if ( acl_match_set( &bv, op, e, NULL ) == 0 ) {
1627 if ( b->a_authz.sai_ssf ) {
1628 Debug( LDAP_DEBUG_ACL, "<= check a_authz.sai_ssf: ACL %u > OP %u\n",
1629 b->a_authz.sai_ssf, op->o_ssf, 0 );
1630 if ( b->a_authz.sai_ssf > op->o_ssf ) {
1635 if ( b->a_authz.sai_transport_ssf ) {
1636 Debug( LDAP_DEBUG_ACL,
1637 "<= check a_authz.sai_transport_ssf: ACL %u > OP %u\n",
1638 b->a_authz.sai_transport_ssf, op->o_transport_ssf, 0 );
1639 if ( b->a_authz.sai_transport_ssf > op->o_transport_ssf ) {
1644 if ( b->a_authz.sai_tls_ssf ) {
1645 Debug( LDAP_DEBUG_ACL,
1646 "<= check a_authz.sai_tls_ssf: ACL %u > OP %u\n",
1647 b->a_authz.sai_tls_ssf, op->o_tls_ssf, 0 );
1648 if ( b->a_authz.sai_tls_ssf > op->o_tls_ssf ) {
1653 if ( b->a_authz.sai_sasl_ssf ) {
1654 Debug( LDAP_DEBUG_ACL,
1655 "<= check a_authz.sai_sasl_ssf: ACL %u > OP %u\n",
1656 b->a_authz.sai_sasl_ssf, op->o_sasl_ssf, 0 );
1657 if ( b->a_authz.sai_sasl_ssf > op->o_sasl_ssf ) {
1662 /* check for the "self" modifier in the <access> field */
1663 if ( b->a_dn.a_self ) {
1667 ACL_RECORD_VALUE_STATE;
1669 /* must have DN syntax */
1670 if ( desc->ad_type->sat_syntax != slap_schema.si_syn_distinguishedName &&
1671 !is_at_syntax( desc->ad_type, SLAPD_NAMEUID_SYNTAX )) continue;
1673 /* check if the target is an attribute. */
1674 if ( val == NULL ) continue;
1676 /* a DN must be present */
1677 if ( BER_BVISEMPTY( &op->o_ndn ) ) {
1681 /* target is attribute, check if the attribute value
1684 rc = value_match( &match, desc,
1685 desc->ad_type->sat_equality, 0,
1686 val, &op->o_ndn, &dummy );
1687 /* on match error or no match, fail the ACL clause */
1688 if ( rc != LDAP_SUCCESS || match != 0 )
1693 if ( b->a_dynacl ) {
1695 slap_access_t tgrant, tdeny;
1697 Debug( LDAP_DEBUG_ACL, "<= check a_dynacl\n",
1700 /* this case works different from the others above.
1701 * since dynamic ACL's themselves give permissions, we need
1702 * to first check b->a_access_mask, the ACL's access level.
1704 /* first check if the right being requested
1705 * is allowed by the ACL clause.
1707 if ( ! ACL_PRIV_ISSET( b->a_access_mask, a2pmask ) ) {
1711 /* start out with nothing granted, nothing denied */
1712 ACL_INVALIDATE(tgrant);
1713 ACL_INVALIDATE(tdeny);
1715 for ( da = b->a_dynacl; da; da = da->da_next ) {
1716 slap_access_t grant,
1719 ACL_INVALIDATE(grant);
1720 ACL_INVALIDATE(deny);
1722 Debug( LDAP_DEBUG_ACL, " <= check a_dynacl: %s\n",
1723 da->da_name, 0, 0 );
1725 (void)da->da_mask( da->da_private, op, e, desc,
1726 val, nmatch, matches, &grant, &deny );
1732 /* remove anything that the ACL clause does not allow */
1733 tgrant &= b->a_access_mask & ACL_PRIV_MASK;
1734 tdeny &= ACL_PRIV_MASK;
1736 /* see if we have anything to contribute */
1737 if( ACL_IS_INVALID(tgrant) && ACL_IS_INVALID(tdeny) ) {
1741 /* this could be improved by changing slap_acl_mask so that it can deal with
1742 * by clauses that return grant/deny pairs. Right now, it does either
1743 * additive or subtractive rights, but not both at the same time. So,
1744 * we need to combine the grant/deny pair into a single rights mask in
1745 * a smart way: if either grant or deny is "empty", then we use the
1746 * opposite as is, otherwise we remove any denied rights from the grant
1747 * rights mask and construct an additive mask.
1749 if (ACL_IS_INVALID(tdeny)) {
1750 modmask = tgrant | ACL_PRIV_ADDITIVE;
1752 } else if (ACL_IS_INVALID(tgrant)) {
1753 modmask = tdeny | ACL_PRIV_SUBSTRACTIVE;
1756 modmask = (tgrant & ~tdeny) | ACL_PRIV_ADDITIVE;
1760 #endif /* SLAP_DYNACL */
1762 modmask = b->a_access_mask;
1765 Debug( LDAP_DEBUG_ACL,
1766 "<= acl_mask: [%d] applying %s (%s)\n",
1767 i, accessmask2str( modmask, accessmaskbuf, 1 ),
1768 b->a_type == ACL_CONTINUE
1770 : b->a_type == ACL_BREAK
1776 if( ACL_IS_ADDITIVE(modmask) ) {
1778 ACL_PRIV_SET( *mask, modmask );
1781 ACL_PRIV_CLR( *mask, ~ACL_PRIV_MASK );
1783 } else if( ACL_IS_SUBTRACTIVE(modmask) ) {
1784 /* substract privs */
1785 ACL_PRIV_CLR( *mask, modmask );
1788 ACL_PRIV_CLR( *mask, ~ACL_PRIV_MASK );
1795 Debug( LDAP_DEBUG_ACL,
1796 "<= acl_mask: [%d] mask: %s\n",
1797 i, accessmask2str(*mask, accessmaskbuf, 1), 0 );
1799 if( b->a_type == ACL_CONTINUE ) {
1802 } else if ( b->a_type == ACL_BREAK ) {
1810 /* implicit "by * none" clause */
1813 Debug( LDAP_DEBUG_ACL,
1814 "<= acl_mask: no more <who> clauses, returning %s (stop)\n",
1815 accessmask2str(*mask, accessmaskbuf, 1), 0, 0 );
1820 * acl_check_modlist - check access control on the given entry to see if
1821 * it allows the given modifications by the user associated with op.
1822 * returns 1 if mods allowed ok
1823 * 0 mods not allowed
1830 Modifications *mlist )
1833 AccessControlState state = ACL_STATE_INIT;
1836 int ret = 1; /* default is access allowed */
1840 be = LDAP_STAILQ_FIRST(&backendDB);
1844 assert( be != NULL );
1846 /* short circuit root database access */
1847 if ( be_isroot( op ) ) {
1848 Debug( LDAP_DEBUG_ACL,
1849 "<= acl_access_allowed: granted to database root\n",
1854 /* use backend default access if no backend acls */
1855 if( op->o_bd != NULL && op->o_bd->be_acl == NULL ) {
1856 Debug( LDAP_DEBUG_ACL,
1857 "=> access_allowed: backend default %s access %s to \"%s\"\n",
1858 access2str( ACL_WRITE ),
1859 op->o_bd->be_dfltaccess >= ACL_WRITE
1860 ? "granted" : "denied",
1862 ret = (op->o_bd->be_dfltaccess >= ACL_WRITE);
1866 for ( ; mlist != NULL; mlist = mlist->sml_next ) {
1868 * Internal mods are ignored by ACL_WRITE checking
1870 if ( mlist->sml_flags & SLAP_MOD_INTERNAL ) {
1871 Debug( LDAP_DEBUG_ACL, "acl: internal mod %s:"
1872 " modify access granted\n",
1873 mlist->sml_desc->ad_cname.bv_val, 0, 0 );
1878 * no-user-modification operational attributes are ignored
1879 * by ACL_WRITE checking as any found here are not provided
1882 if ( is_at_no_user_mod( mlist->sml_desc->ad_type )
1883 && ! ( mlist->sml_flags & SLAP_MOD_MANAGING ) )
1885 Debug( LDAP_DEBUG_ACL, "acl: no-user-mod %s:"
1886 " modify access granted\n",
1887 mlist->sml_desc->ad_cname.bv_val, 0, 0 );
1891 switch ( mlist->sml_op ) {
1892 case LDAP_MOD_REPLACE:
1893 case LDAP_MOD_INCREMENT:
1895 * We must check both permission to delete the whole
1896 * attribute and permission to add the specific attributes.
1897 * This prevents abuse from selfwriters.
1899 if ( ! access_allowed( op, e,
1900 mlist->sml_desc, NULL,
1901 ( mlist->sml_flags & SLAP_MOD_MANAGING ) ? ACL_MANAGE : ACL_WDEL,
1908 if ( mlist->sml_values == NULL ) break;
1910 /* fall thru to check value to add */
1913 assert( mlist->sml_values != NULL );
1915 for ( bv = mlist->sml_nvalues
1916 ? mlist->sml_nvalues : mlist->sml_values;
1917 bv->bv_val != NULL; bv++ )
1919 if ( ! access_allowed( op, e,
1920 mlist->sml_desc, bv,
1921 ( mlist->sml_flags & SLAP_MOD_MANAGING ) ? ACL_MANAGE : ACL_WADD,
1930 case LDAP_MOD_DELETE:
1931 if ( mlist->sml_values == NULL ) {
1932 if ( ! access_allowed( op, e,
1933 mlist->sml_desc, NULL,
1934 ( mlist->sml_flags & SLAP_MOD_MANAGING ) ? ACL_MANAGE : ACL_WDEL,
1942 for ( bv = mlist->sml_nvalues
1943 ? mlist->sml_nvalues : mlist->sml_values;
1944 bv->bv_val != NULL; bv++ )
1946 if ( ! access_allowed( op, e,
1947 mlist->sml_desc, bv,
1948 ( mlist->sml_flags & SLAP_MOD_MANAGING ) ? ACL_MANAGE : ACL_WDEL,
1957 case SLAP_MOD_SOFTADD:
1958 /* allow adding attribute via modrdn thru */
1970 if (be_null) op->o_bd = NULL;
1976 struct berval *list,
1989 while ( len >= 0 && --ix >= 0 ) {
1990 while ( --len >= 0 && *p++ != sep )
1993 while ( len >= 0 && *p == ' ' ) {
2006 while ( --len >= 0 && *p != sep ) {
2010 while ( bv->bv_len > 0 && *--p == ' ' ) {
2017 typedef struct acl_set_gather_t {
2023 acl_set_cb_gather( Operation *op, SlapReply *rs )
2025 acl_set_gather_t *p = (acl_set_gather_t *)op->o_callback->sc_private;
2027 if ( rs->sr_type == REP_SEARCH ) {
2028 BerValue bvals[ 2 ];
2029 BerVarray bvalsp = NULL;
2032 for ( j = 0; !BER_BVISNULL( &rs->sr_attrs[ j ].an_name ); j++ ) {
2033 AttributeDescription *desc = rs->sr_attrs[ j ].an_desc;
2035 if ( desc == NULL ) {
2039 if ( desc == slap_schema.si_ad_entryDN ) {
2041 bvals[ 0 ] = rs->sr_entry->e_nname;
2042 BER_BVZERO( &bvals[ 1 ] );
2047 a = attr_find( rs->sr_entry->e_attrs, desc );
2049 bvalsp = a->a_nvals;
2054 p->bvals = slap_set_join( p->cookie, p->bvals,
2055 ( '|' | SLAP_SET_RREF ), bvalsp );
2060 assert( rs->sr_type == REP_RESULT );
2067 acl_set_gather( SetCookie *cookie, struct berval *name, AttributeDescription *desc )
2069 AclSetCookie *cp = (AclSetCookie *)cookie;
2071 LDAPURLDesc *ludp = NULL;
2072 Operation op2 = { 0 };
2073 SlapReply rs = {REP_RESULT};
2074 AttributeName anlist[ 2 ], *anlistp = NULL;
2076 slap_callback cb = { NULL, acl_set_cb_gather, NULL, NULL };
2077 acl_set_gather_t p = { 0 };
2079 /* this routine needs to return the bervals instead of
2080 * plain strings, since syntax is not known. It should
2081 * also return the syntax or some "comparison cookie".
2083 if ( strncasecmp( name->bv_val, "ldap:///", STRLENOF( "ldap:///" ) ) != 0 ) {
2084 return acl_set_gather2( cookie, name, desc );
2087 rc = ldap_url_parse( name->bv_val, &ludp );
2088 if ( rc != LDAP_URL_SUCCESS ) {
2089 Debug( LDAP_DEBUG_TRACE,
2090 "%s acl_set_gather: unable to parse URL=\"%s\"\n",
2091 cp->asc_op->o_log_prefix, name->bv_val, 0 );
2093 rc = LDAP_PROTOCOL_ERROR;
2097 if ( ( ludp->lud_host && ludp->lud_host[0] ) || ludp->lud_exts )
2099 /* host part must be empty */
2100 /* extensions parts must be empty */
2101 Debug( LDAP_DEBUG_TRACE,
2102 "%s acl_set_gather: host/exts must be absent in URL=\"%s\"\n",
2103 cp->asc_op->o_log_prefix, name->bv_val, 0 );
2105 rc = LDAP_PROTOCOL_ERROR;
2109 /* Grab the searchbase and see if an appropriate database can be found */
2110 ber_str2bv( ludp->lud_dn, 0, 0, &op2.o_req_dn );
2111 rc = dnNormalize( 0, NULL, NULL, &op2.o_req_dn,
2112 &op2.o_req_ndn, cp->asc_op->o_tmpmemctx );
2113 BER_BVZERO( &op2.o_req_dn );
2114 if ( rc != LDAP_SUCCESS ) {
2115 Debug( LDAP_DEBUG_TRACE,
2116 "%s acl_set_gather: DN=\"%s\" normalize failed\n",
2117 cp->asc_op->o_log_prefix, op2.o_req_dn.bv_val, 0 );
2122 op2.o_bd = select_backend( &op2.o_req_ndn, 1 );
2123 if ( ( op2.o_bd == NULL ) || ( op2.o_bd->be_search == NULL ) ) {
2124 Debug( LDAP_DEBUG_TRACE,
2125 "%s acl_set_gather: no database could be selected for DN=\"%s\"\n",
2126 cp->asc_op->o_log_prefix, op2.o_req_ndn.bv_val, 0 );
2128 rc = LDAP_NO_SUCH_OBJECT;
2132 /* Grab the filter */
2133 if ( ludp->lud_filter ) {
2134 ber_str2bv_x( ludp->lud_filter, 0, 0, &op2.ors_filterstr,
2135 cp->asc_op->o_tmpmemctx );
2136 op2.ors_filter = str2filter_x( cp->asc_op, op2.ors_filterstr.bv_val );
2137 if ( op2.ors_filter == NULL ) {
2138 Debug( LDAP_DEBUG_TRACE,
2139 "%s acl_set_gather: unable to parse filter=\"%s\"\n",
2140 cp->asc_op->o_log_prefix, op2.ors_filterstr.bv_val, 0 );
2142 rc = LDAP_PROTOCOL_ERROR;
2147 op2.ors_filterstr = *slap_filterstr_objectClass_pres;
2148 op2.ors_filter = (Filter *)slap_filter_objectClass_pres;
2152 /* Grab the scope */
2153 op2.ors_scope = ludp->lud_scope;
2155 /* Grap the attributes */
2156 if ( ludp->lud_attrs ) {
2159 for ( ; ludp->lud_attrs[ nattrs ]; nattrs++ )
2162 anlistp = slap_sl_calloc( sizeof( AttributeName ), nattrs + 2,
2163 cp->asc_op->o_tmpmemctx );
2165 for ( i = 0, nattrs = 0; ludp->lud_attrs[ i ]; i++ ) {
2167 AttributeDescription *desc = NULL;
2168 const char *text = NULL;
2170 ber_str2bv( ludp->lud_attrs[ i ], 0, 0, &name );
2171 rc = slap_bv2ad( &name, &desc, &text );
2172 if ( rc == LDAP_SUCCESS ) {
2173 anlistp[ nattrs ].an_name = name;
2174 anlistp[ nattrs ].an_desc = desc;
2183 anlistp[ nattrs ].an_name = desc->ad_cname;
2184 anlistp[ nattrs ].an_desc = desc;
2186 BER_BVZERO( &anlistp[ nattrs + 1 ].an_name );
2190 op2.o_hdr = cp->asc_op->o_hdr;
2191 op2.o_tag = LDAP_REQ_SEARCH;
2192 op2.o_ndn = op2.o_bd->be_rootndn;
2193 op2.o_callback = &cb;
2194 slap_op_time( &op2.o_time, &op2.o_tincr );
2195 op2.o_do_not_cache = 1;
2196 op2.o_is_auth_check = 0;
2197 ber_dupbv_x( &op2.o_req_dn, &op2.o_req_ndn, cp->asc_op->o_tmpmemctx );
2198 op2.ors_slimit = SLAP_NO_LIMIT;
2199 op2.ors_tlimit = SLAP_NO_LIMIT;
2200 op2.ors_attrs = anlistp;
2201 op2.ors_attrsonly = 0;
2202 op2.o_private = cp->asc_op->o_private;
2203 op2.o_extra = cp->asc_op->o_extra;
2207 rc = op2.o_bd->be_search( &op2, &rs );
2213 if ( op2.ors_filter && op2.ors_filter != slap_filter_objectClass_pres ) {
2214 filter_free_x( cp->asc_op, op2.ors_filter );
2216 if ( !BER_BVISNULL( &op2.o_req_ndn ) ) {
2217 slap_sl_free( op2.o_req_ndn.bv_val, cp->asc_op->o_tmpmemctx );
2219 if ( !BER_BVISNULL( &op2.o_req_dn ) ) {
2220 slap_sl_free( op2.o_req_dn.bv_val, cp->asc_op->o_tmpmemctx );
2223 ldap_free_urldesc( ludp );
2225 if ( anlistp && anlistp != anlist ) {
2226 slap_sl_free( anlistp, cp->asc_op->o_tmpmemctx );
2233 acl_set_gather2( SetCookie *cookie, struct berval *name, AttributeDescription *desc )
2235 AclSetCookie *cp = (AclSetCookie *)cookie;
2236 BerVarray bvals = NULL;
2240 /* this routine needs to return the bervals instead of
2241 * plain strings, since syntax is not known. It should
2242 * also return the syntax or some "comparison cookie".
2244 rc = dnNormalize( 0, NULL, NULL, name, &ndn, cp->asc_op->o_tmpmemctx );
2245 if ( rc == LDAP_SUCCESS ) {
2246 if ( desc == slap_schema.si_ad_entryDN ) {
2247 bvals = (BerVarray)slap_sl_malloc( sizeof( BerValue ) * 2,
2248 cp->asc_op->o_tmpmemctx );
2250 BER_BVZERO( &bvals[ 1 ] );
2254 backend_attribute( cp->asc_op,
2255 cp->asc_e, &ndn, desc, &bvals, ACL_NONE );
2258 if ( !BER_BVISNULL( &ndn ) ) {
2259 slap_sl_free( ndn.bv_val, cp->asc_op->o_tmpmemctx );
2268 struct berval *subj,
2271 struct berval *default_set_attribute )
2273 struct berval set = BER_BVNULL;
2275 AclSetCookie cookie;
2277 if ( default_set_attribute == NULL ) {
2278 ber_dupbv_x( &set, subj, op->o_tmpmemctx );
2281 struct berval subjdn, ndn = BER_BVNULL;
2282 struct berval setat;
2283 BerVarray bvals = NULL;
2285 AttributeDescription *desc = NULL;
2287 /* format of string is "entry/setAttrName" */
2288 if ( acl_get_part( subj, 0, '/', &subjdn ) < 0 ) {
2292 if ( acl_get_part( subj, 1, '/', &setat ) < 0 ) {
2293 setat = *default_set_attribute;
2297 * NOTE: dnNormalize honors the ber_len field
2298 * as the length of the dn to be normalized
2300 if ( slap_bv2ad( &setat, &desc, &text ) == LDAP_SUCCESS ) {
2301 if ( dnNormalize( 0, NULL, NULL, &subjdn, &ndn, op->o_tmpmemctx ) == LDAP_SUCCESS )
2303 backend_attribute( op, e, &ndn, desc, &bvals, ACL_NONE );
2304 if ( bvals != NULL && !BER_BVISNULL( &bvals[0] ) ) {
2308 BER_BVZERO( &bvals[0] );
2309 for ( i = 1; !BER_BVISNULL( &bvals[i] ); i++ )
2311 bvals[0].bv_val = bvals[i-1].bv_val;
2312 BER_BVZERO( &bvals[i-1] );
2314 ber_bvarray_free_x( bvals, op->o_tmpmemctx );
2315 slap_sl_free( ndn.bv_val, op->o_tmpmemctx );
2320 if ( !BER_BVISNULL( &set ) ) {
2323 rc = ( slap_set_filter(
2325 (SetCookie *)&cookie, &set,
2326 &op->o_ndn, &e->e_nname, NULL ) > 0 );
2327 slap_sl_free( set.bv_val, op->o_tmpmemctx );
2336 * dynamic ACL infrastructure
2338 static slap_dynacl_t *da_list = NULL;
2341 slap_dynacl_register( slap_dynacl_t *da )
2345 for ( tmp = da_list; tmp; tmp = tmp->da_next ) {
2346 if ( strcasecmp( da->da_name, tmp->da_name ) == 0 ) {
2351 if ( tmp != NULL ) {
2355 if ( da->da_mask == NULL ) {
2359 da->da_private = NULL;
2360 da->da_next = da_list;
2366 static slap_dynacl_t *
2367 slap_dynacl_next( slap_dynacl_t *da )
2376 slap_dynacl_get( const char *name )
2380 for ( da = slap_dynacl_next( NULL ); da; da = slap_dynacl_next( da ) ) {
2381 if ( strcasecmp( da->da_name, name ) == 0 ) {
2388 #endif /* SLAP_DYNACL */
2391 * statically built-in dynamic ACL initialization
2393 static int (*acl_init_func[])( void ) = {
2395 /* TODO: remove when ACI will only be dynamic */
2396 #if SLAPD_ACI_ENABLED == SLAPD_MOD_STATIC
2398 #endif /* SLAPD_ACI_ENABLED */
2399 #endif /* SLAP_DYNACL */
2409 for ( i = 0; acl_init_func[ i ] != NULL; i++ ) {
2410 rc = (*(acl_init_func[ i ]))();
2425 regmatch_t *matches)
2433 bv->bv_val[0] = '\0';
2434 bv->bv_len--; /* leave space for lone $ */
2437 for ( dp = bv->bv_val, sp = pat->bv_val; size < bv->bv_len &&
2438 sp < pat->bv_val + pat->bv_len ; sp++ )
2440 /* did we previously see a $ */
2442 if ( flag == 1 && *sp == '$' ) {
2447 } else if ( flag == 1 && *sp == '{' /*'}'*/) {
2450 } else if ( *sp >= '0' && *sp <= '9' ) {
2458 for ( sp++; *sp != '\0' && *sp != /*'{'*/ '}'; sp++ ) {
2459 if ( *sp >= '0' && *sp <= '9' ) {
2460 n = 10*n + ( *sp - '0' );
2464 if ( *sp != /*'{'*/ '}' ) {
2470 if ( n >= nmatch ) {
2476 i = matches[n].rm_so;
2477 l = matches[n].rm_eo;
2478 for ( ; size < bv->bv_len && i < l; size++, i++ ) {
2496 /* must have ended with a single $ */
2504 Debug( LDAP_DEBUG_TRACE, "=> acl_string_expand: pattern: %.*s\n", (int)pat->bv_len, pat->bv_val, 0 );
2505 Debug( LDAP_DEBUG_TRACE, "=> acl_string_expand: expanded: %s\n", bv->bv_val, 0, 0 );
2512 struct berval *pat, /* pattern to expand and match against */
2513 char *str, /* string to match against pattern */
2514 char *buf, /* buffer with $N expansion variables */
2515 int nmatch, /* size of the matches array */
2516 regmatch_t *matches /* offsets in buffer for $N expansion variables */
2520 char newbuf[ACL_BUF_SIZE];
2524 bv.bv_len = sizeof( newbuf ) - 1;
2531 acl_string_expand( &bv, pat, buf, nmatch, matches );
2532 rc = regcomp( &re, newbuf, REG_EXTENDED|REG_ICASE );
2534 char error[ACL_BUF_SIZE];
2535 regerror( rc, &re, error, sizeof( error ) );
2537 Debug( LDAP_DEBUG_TRACE,
2538 "compile( \"%s\", \"%s\") failed %s\n",
2539 pat->bv_val, str, error );
2543 rc = regexec( &re, str, 0, NULL, 0 );
2546 Debug( LDAP_DEBUG_TRACE,
2547 "=> regex_matches: string: %s\n", str, 0, 0 );
2548 Debug( LDAP_DEBUG_TRACE,
2549 "=> regex_matches: rc: %d %s\n",
2550 rc, !rc ? "matches" : "no matches", 0 );