1 files changed, 121 insertions, 0 deletions
diff --git a/servers/slapd/back-mdb/operational.c b/servers/slapd/back-mdb/operational.c
new file mode 100644
index 0000000..5fb0081
--- /dev/null
+++ b/servers/slapd/back-mdb/operational.c
@@ -0,0 +1,121 @@
+/* operational.c - mdb backend operational attributes function */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2000-2021 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+
+#include <ac/string.h>
+#include <ac/socket.h>
+
+#include "slap.h"
+#include "back-mdb.h"
+
+/*
+ * sets *hasSubordinates to LDAP_COMPARE_TRUE/LDAP_COMPARE_FALSE
+ * if the entry has children or not.
+ */
+int
+mdb_hasSubordinates(
+	Operation	*op,
+	Entry		*e,
+	int		*hasSubordinates )
+{
+	struct mdb_info *mdb = (struct mdb_info *) op->o_bd->be_private;
+	MDB_txn		*rtxn;
+	mdb_op_info	opinfo = {{{0}}}, *moi = &opinfo;
+	int		rc;
+	
+	assert( e != NULL );
+
+	rc = mdb_opinfo_get(op, mdb, 1, &moi);
+	switch(rc) {
+	case 0:
+		break;
+	default:
+		rc = LDAP_OTHER;
+		goto done;
+	}
+
+	rtxn = moi->moi_txn;
+
+	rc = mdb_dn2id_children( op, rtxn, e );
+
+	switch( rc ) {
+	case 0:
+		*hasSubordinates = LDAP_COMPARE_TRUE;
+		break;
+
+	case MDB_NOTFOUND:
+		*hasSubordinates = LDAP_COMPARE_FALSE;
+		rc = LDAP_SUCCESS;
+		break;
+
+	default:
+		Debug(LDAP_DEBUG_ARGS, 
+			"<=- " LDAP_XSTRING(mdb_hasSubordinates)
+			": has_children failed: %s (%d)\n", 
+			mdb_strerror(rc), rc, 0 );
+		rc = LDAP_OTHER;
+	}
+
+done:;
+	if ( moi == &opinfo ) {
+		mdb_txn_reset( moi->moi_txn );
+		LDAP_SLIST_REMOVE( &op->o_extra, &moi->moi_oe, OpExtra, oe_next );
+	} else {
+		moi->moi_ref--;
+	}
+	return rc;
+}
+
+/*
+ * sets the supported operational attributes (if required)
+ */
+int
+mdb_operational(
+	Operation	*op,
+	SlapReply	*rs )
+{
+	Attribute	**ap;
+
+	assert( rs->sr_entry != NULL );
+
+	for ( ap = &rs->sr_operational_attrs; *ap; ap = &(*ap)->a_next ) {
+		if ( (*ap)->a_desc == slap_schema.si_ad_hasSubordinates ) {
+			break;
+		}
+	}
+
+	if ( *ap == NULL &&
+		attr_find( rs->sr_entry->e_attrs, slap_schema.si_ad_hasSubordinates ) == NULL &&
+		( SLAP_OPATTRS( rs->sr_attr_flags ) ||
+			ad_inlist( slap_schema.si_ad_hasSubordinates, rs->sr_attrs ) ) )
+	{
+		int	hasSubordinates, rc;
+
+		rc = mdb_hasSubordinates( op, rs->sr_entry, &hasSubordinates );
+		if ( rc == LDAP_SUCCESS ) {
+			*ap = slap_operational_hasSubordinate( hasSubordinates == LDAP_COMPARE_TRUE );
+			assert( *ap != NULL );
+
+			ap = &(*ap)->a_next;
+		}
+	}
+
+	return LDAP_SUCCESS;
+}
+