Adding upstream version 2.4.57+dfsg.upstream/2.4.57+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 237 insertions, 0 deletions

diff --git a/servers/slapd/delete.c b/servers/slapd/delete.c
new file mode 100644
index 0000000..1c0d8ac
--- /dev/null
+++ b/servers/slapd/delete.c
@@ -0,0 +1,237 @@
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2021 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>.
+ */
+/* Portions Copyright (c) 1995 Regents of the University of Michigan.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that this notice is preserved and that due credit is given
+ * to the University of Michigan at Ann Arbor. The name of the University
+ * may not be used to endorse or promote products derived from this
+ * software without specific prior written permission. This software
+ * is provided ``as is'' without express or implied warranty.
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+
+#include <ac/string.h>
+#include <ac/socket.h>
+
+#include "slap.h"
+
+#include "lutil.h"
+
+int
+do_delete(
+    Operation	*op,
+    SlapReply	*rs )
+{
+	struct berval dn = BER_BVNULL;
+
+	Debug( LDAP_DEBUG_TRACE, "%s do_delete\n",
+		op->o_log_prefix, 0, 0 );
+	/*
+	 * Parse the delete request.  It looks like this:
+	 *
+	 *	DelRequest := DistinguishedName
+	 */
+
+	if ( ber_scanf( op->o_ber, "m", &dn ) == LBER_ERROR ) {
+		Debug( LDAP_DEBUG_ANY, "%s do_delete: ber_scanf failed\n",
+			op->o_log_prefix, 0, 0 );
+		send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
+		return SLAPD_DISCONNECT;
+	}
+
+	if( get_ctrls( op, rs, 1 ) != LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_ANY, "%s do_delete: get_ctrls failed\n",
+			op->o_log_prefix, 0, 0 );
+		goto cleanup;
+	} 
+
+	rs->sr_err = dnPrettyNormal( NULL, &dn, &op->o_req_dn, &op->o_req_ndn,
+		op->o_tmpmemctx );
+	if( rs->sr_err != LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_ANY, "%s do_delete: invalid dn (%s)\n",
+			op->o_log_prefix, dn.bv_val, 0 );
+		send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid DN" );
+		goto cleanup;
+	}
+
+	Statslog( LDAP_DEBUG_STATS, "%s DEL dn=\"%s\"\n",
+		op->o_log_prefix, op->o_req_dn.bv_val, 0, 0, 0 );
+
+	if( op->o_req_ndn.bv_len == 0 ) {
+		Debug( LDAP_DEBUG_ANY, "%s do_delete: root dse!\n",
+			op->o_log_prefix, 0, 0 );
+		/* protocolError would likely be a more appropriate error */
+		send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
+			"cannot delete the root DSE" );
+		goto cleanup;
+
+	} else if ( bvmatch( &op->o_req_ndn, &frontendDB->be_schemandn ) ) {
+		Debug( LDAP_DEBUG_ANY, "%s do_delete: subschema subentry!\n",
+			op->o_log_prefix, 0, 0 );
+		/* protocolError would likely be a more appropriate error */
+		send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
+			"cannot delete the root DSE" );
+		goto cleanup;
+	}
+
+	op->o_bd = frontendDB;
+	rs->sr_err = frontendDB->be_delete( op, rs );
+
+#ifdef LDAP_X_TXN
+	if( rs->sr_err == LDAP_X_TXN_SPECIFY_OKAY ) {
+		/* skip cleanup */
+		return rs->sr_err;
+	}
+#endif
+
+cleanup:;
+	op->o_tmpfree( op->o_req_dn.bv_val, op->o_tmpmemctx );
+	op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx );
+	return rs->sr_err;
+}
+
+int
+fe_op_delete( Operation *op, SlapReply *rs )
+{
+	struct berval	pdn = BER_BVNULL;
+	BackendDB	*op_be, *bd = op->o_bd;
+	
+	/*
+	 * We could be serving multiple database backends.  Select the
+	 * appropriate one, or send a referral to our "referral server"
+	 * if we don't hold it.
+	 */
+	op->o_bd = select_backend( &op->o_req_ndn, 1 );
+	if ( op->o_bd == NULL ) {
+		op->o_bd = bd;
+		rs->sr_ref = referral_rewrite( default_referral,
+			NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
+
+		if (!rs->sr_ref) rs->sr_ref = default_referral;
+		if ( rs->sr_ref != NULL ) {
+			rs->sr_err = LDAP_REFERRAL;
+			send_ldap_result( op, rs );
+
+			if (rs->sr_ref != default_referral) ber_bvarray_free( rs->sr_ref );
+		} else {
+			send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
+				"no global superior knowledge" );
+		}
+		goto cleanup;
+	}
+
+	/* If we've got a glued backend, check the real backend */
+	op_be = op->o_bd;
+	if ( SLAP_GLUE_INSTANCE( op->o_bd )) {
+		op->o_bd = select_backend( &op->o_req_ndn, 0 );
+	}
+
+	/* check restrictions */
+	if( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) {
+		send_ldap_result( op, rs );
+		goto cleanup;
+	}
+
+	/* check for referrals */
+	if( backend_check_referrals( op, rs ) != LDAP_SUCCESS ) {
+		goto cleanup;
+	}
+
+	/*
+	 * do the delete if 1 && (2 || 3)
+	 * 1) there is a delete function implemented in this backend;
+	 * 2) this backend is the provider for what it holds;
+	 * 3) it's a replica and the dn supplied is the update_ndn.
+	 */
+	if ( op->o_bd->be_delete ) {
+		/* do the update here */
+		int repl_user = be_isupdate( op );
+		if ( !SLAP_SINGLE_SHADOW(op->o_bd) || repl_user ) {
+			struct berval	org_req_dn = BER_BVNULL;
+			struct berval	org_req_ndn = BER_BVNULL;
+			struct berval	org_dn = BER_BVNULL;
+			struct berval	org_ndn = BER_BVNULL;
+			int		org_managedsait;
+
+			op->o_bd = op_be;
+			op->o_bd->be_delete( op, rs );
+
+			org_req_dn = op->o_req_dn;
+			org_req_ndn = op->o_req_ndn;
+			org_dn = op->o_dn;
+			org_ndn = op->o_ndn;
+			org_managedsait = get_manageDSAit( op );
+			op->o_dn = op->o_bd->be_rootdn;
+			op->o_ndn = op->o_bd->be_rootndn;
+			op->o_managedsait = SLAP_CONTROL_NONCRITICAL;
+
+			while ( rs->sr_err == LDAP_SUCCESS &&
+				op->o_delete_glue_parent )
+			{
+				op->o_delete_glue_parent = 0;
+				if ( !be_issuffix( op->o_bd, &op->o_req_ndn )) {
+					slap_callback cb = { NULL, NULL, NULL, NULL };
+					cb.sc_response = slap_null_cb;
+					dnParent( &op->o_req_ndn, &pdn );
+					op->o_req_dn = pdn;
+					op->o_req_ndn = pdn;
+					op->o_callback = &cb;
+					op->o_bd->be_delete( op, rs );
+				} else {
+					break;
+				}
+			}
+
+			op->o_managedsait = org_managedsait;
+			op->o_dn = org_dn;
+			op->o_ndn = org_ndn;
+			op->o_req_dn = org_req_dn;
+			op->o_req_ndn = org_req_ndn;
+			op->o_delete_glue_parent = 0;
+
+		} else {
+			BerVarray defref = op->o_bd->be_update_refs
+				? op->o_bd->be_update_refs : default_referral;
+
+			if ( defref != NULL ) {
+				rs->sr_ref = referral_rewrite( defref,
+					NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
+				if (!rs->sr_ref) rs->sr_ref = defref;
+				rs->sr_err = LDAP_REFERRAL;
+				send_ldap_result( op, rs );
+
+				if (rs->sr_ref != defref) ber_bvarray_free( rs->sr_ref );
+
+			} else {
+				send_ldap_error( op, rs,
+					LDAP_UNWILLING_TO_PERFORM,
+					"shadow context; no update referral" );
+			}
+		}
+
+	} else {
+		send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
+			"operation not supported within namingContext" );
+	}
+
+cleanup:;
+	op->o_bd = bd;
+	return rs->sr_err;
+}