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, 141 insertions, 0 deletions

diff --git a/servers/slapd/abandon.c b/servers/slapd/abandon.c
new file mode 100644
index 0000000..a7da99d
--- /dev/null
+++ b/servers/slapd/abandon.c
@@ -0,0 +1,141 @@
+/* abandon.c - decode and handle an ldap abandon operation */
+/* $OpenLDAP$ */
+/* 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/socket.h>
+
+#include "slap.h"
+
+int
+do_abandon( Operation *op, SlapReply *rs )
+{
+	ber_int_t	id;
+	Operation	*o;
+	const char	*msg;
+
+	Debug( LDAP_DEBUG_TRACE, "%s do_abandon\n",
+		op->o_log_prefix, 0, 0 );
+
+	/*
+	 * Parse the abandon request.  It looks like this:
+	 *
+	 *	AbandonRequest := MessageID
+	 */
+
+	if ( ber_scanf( op->o_ber, "i", &id ) == LBER_ERROR ) {
+		Debug( LDAP_DEBUG_ANY, "%s do_abandon: ber_scanf failed\n",
+			op->o_log_prefix, 0, 0 );
+		send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
+		return SLAPD_DISCONNECT;
+	}
+
+	Statslog( LDAP_DEBUG_STATS, "%s ABANDON msg=%ld\n",
+		op->o_log_prefix, (long) id, 0, 0, 0 );
+
+	if( get_ctrls( op, rs, 0 ) != LDAP_SUCCESS ) {
+		Debug( LDAP_DEBUG_ANY, "%s do_abandon: get_ctrls failed\n",
+			op->o_log_prefix, 0, 0 );
+		return rs->sr_err;
+	} 
+
+	Debug( LDAP_DEBUG_ARGS, "%s do_abandon: id=%ld\n",
+		op->o_log_prefix, (long) id, 0 );
+
+	if( id <= 0 ) {
+		Debug( LDAP_DEBUG_ANY, "%s do_abandon: bad msgid %ld\n",
+			op->o_log_prefix, (long) id, 0 );
+		return LDAP_SUCCESS;
+	}
+
+	ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
+
+	/* Find the operation being abandoned. */
+	LDAP_STAILQ_FOREACH( o, &op->o_conn->c_ops, o_next ) {
+		if ( o->o_msgid == id ) {
+			break;
+		}
+	}
+
+	if ( o == NULL ) {
+		msg = "not found";
+		/* The operation is not active. Just discard it if found.  */
+		LDAP_STAILQ_FOREACH( o, &op->o_conn->c_pending_ops, o_next ) {
+			if ( o->o_msgid == id ) {
+				msg = "discarded";
+				/* FIXME: This traverses c_pending_ops yet again. */
+				LDAP_STAILQ_REMOVE( &op->o_conn->c_pending_ops,
+					o, Operation, o_next );
+				LDAP_STAILQ_NEXT(o, o_next) = NULL;
+				op->o_conn->c_n_ops_pending--;
+				slap_op_free( o, NULL );
+				break;
+			}
+		}
+
+	} else if ( o->o_tag == LDAP_REQ_BIND
+			|| o->o_tag == LDAP_REQ_UNBIND
+			|| o->o_tag == LDAP_REQ_ABANDON ) {
+		msg = "cannot be abandoned";
+
+#if 0 /* Would break o_abandon used as "suppress response" flag, ITS#6138 */
+	} else if ( o->o_abandon ) {
+		msg = "already being abandoned";
+#endif
+
+	} else {
+		msg = "found";
+		/* Set the o_abandon flag in the to-be-abandoned operation.
+		 * The backend can periodically check this flag and abort the
+		 * operation at a convenient time.  However it should "send"
+		 * the response anyway, with result code SLAPD_ABANDON.
+		 * The functions in result.c will intercept the message.
+		 */
+		o->o_abandon = 1;
+		op->orn_msgid = id;
+		op->o_bd = frontendDB;
+		rs->sr_err = frontendDB->be_abandon( op, rs );
+	}
+
+	ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
+
+	Debug( LDAP_DEBUG_TRACE, "%s do_abandon: op=%ld %s\n",
+		op->o_log_prefix, (long) id, msg );
+	return rs->sr_err;
+}
+
+int
+fe_op_abandon( Operation *op, SlapReply *rs )
+{
+	LDAP_STAILQ_FOREACH( op->o_bd, &backendDB, be_next ) {
+		if ( op->o_bd->be_abandon ) {
+			(void)op->o_bd->be_abandon( op, rs );
+		}
+	}
+
+	return LDAP_SUCCESS;
+}