+static int test_mra_filter(
+ Backend *be,
+ Connection *conn,
+ Operation *op,
+ Entry *e,
+ MatchingRuleAssertion *mra )
+{
+ Attribute *a;
+
+ if ( mra->ma_desc ) {
+ /*
+ * if ma_desc is available, then we're filtering for
+ * one attribute, and SEARCH permissions can be checked
+ * directly.
+ */
+ if( !access_allowed( be, conn, op, e,
+ mra->ma_desc, &mra->ma_value, ACL_SEARCH, NULL ) )
+ {
+ return LDAP_INSUFFICIENT_ACCESS;
+ }
+
+ for(a = attrs_find( e->e_attrs, mra->ma_desc );
+ a != NULL;
+ a = attrs_find( a->a_next, mra->ma_desc ) )
+ {
+ struct berval *bv;
+ for ( bv = a->a_vals; bv->bv_val != NULL; bv++ ) {
+ int ret;
+ int rc;
+ const char *text;
+
+ rc = value_match( &ret, a->a_desc, mra->ma_rule,
+ SLAP_MR_ASSERTION_SYNTAX_MATCH,
+ bv, &mra->ma_value, &text );
+
+ if( rc != LDAP_SUCCESS ) {
+ return rc;
+ }
+
+ if ( ret == 0 ) {
+ return LDAP_COMPARE_TRUE;
+ }
+ }
+ }
+ } else {
+
+ /*
+ * No attribute description: test all
+ */
+ for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
+ struct berval *bv, value;
+ const char *text = NULL;
+ int rc;
+
+ /* check if matching is appropriate */
+ if ( !mr_usable_with_at( mra->ma_rule, a->a_desc->ad_type )) {
+ continue;
+ }
+
+ /* normalize for equality */
+ rc = value_validate_normalize( a->a_desc,
+ SLAP_MR_EQUALITY,
+ &mra->ma_value, &value, &text );
+ if ( rc != LDAP_SUCCESS ) {
+ continue;
+ }
+
+ /* check search access */
+ if ( !access_allowed( be, conn, op, e,
+ a->a_desc, &value, ACL_SEARCH, NULL ) ) {
+ continue;
+ }
+
+ /* check match */
+ for ( bv = a->a_vals; bv->bv_val != NULL; bv++ ) {
+ int ret;
+ int rc;
+
+ rc = value_match( &ret, a->a_desc, mra->ma_rule,
+ SLAP_MR_ASSERTION_SYNTAX_MATCH,
+ bv, &value, &text );
+
+ if( rc != LDAP_SUCCESS ) {
+ return rc;
+ }
+
+ if ( ret == 0 ) {
+ return LDAP_COMPARE_TRUE;
+ }
+ }
+ }
+ }
+
+ /* check attrs in DN AVAs if required */
+ if ( mra->ma_dnattrs ) {
+ LDAPDN *dn = NULL;
+ int iRDN, iAVA;
+ int rc;
+
+ /* parse and pretty the dn */
+ rc = dnPrettyDN( NULL, &e->e_name, &dn );
+ if ( rc != LDAP_SUCCESS ) {
+ return LDAP_INVALID_SYNTAX;
+ }
+
+ /* for each AVA of each RDN ... */
+ for ( iRDN = 0; dn[ 0 ][ iRDN ]; iRDN++ ) {
+ LDAPRDN *rdn = dn[ 0 ][ iRDN ];
+
+ for ( iAVA = 0; rdn[ 0 ][ iAVA ]; iAVA++ ) {
+ LDAPAVA *ava = rdn[ 0 ][ iAVA ];
+ struct berval *bv = &ava->la_value, value;
+ AttributeDescription *ad = (AttributeDescription *)ava->la_private;
+ int ret;
+ int rc;
+ const char *text;
+
+ assert( ad );
+
+ if ( mra->ma_desc ) {
+ /* have a mra type? check for subtype */
+ if ( !is_ad_subtype( ad, mra->ma_desc ) ) {
+ continue;
+ }
+ value = mra->ma_value;
+
+ } else {
+ const char *text = NULL;
+
+ /* check if matching is appropriate */
+ if ( !mr_usable_with_at( mra->ma_rule, ad->ad_type )) {
+ continue;
+ }
+
+ /* normalize for equality */
+ rc = value_validate_normalize( ad, SLAP_MR_EQUALITY,
+ &mra->ma_value, &value, &text );
+ if ( rc != LDAP_SUCCESS ) {
+ continue;
+ }
+
+ /* check search access */
+ if ( !access_allowed( be, conn, op, e,
+ ad, &value, ACL_SEARCH, NULL ) ) {
+ continue;
+ }
+ }
+
+ /* check match */
+ rc = value_match( &ret, ad, mra->ma_rule,
+ SLAP_MR_ASSERTION_SYNTAX_MATCH,
+ bv, &value, &text );
+
+ if( rc != LDAP_SUCCESS ) {
+ ldap_dnfree( dn );
+ return rc;
+ }
+
+ if ( ret == 0 ) {
+ ldap_dnfree( dn );
+ return LDAP_COMPARE_TRUE;
+ }
+ }
+ }
+ }
+
+ return LDAP_COMPARE_FALSE;
+}