1 /* cancel.c - LDAP cancel extended operation */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 1998-2007 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>.
21 #include <ac/socket.h>
22 #include <ac/string.h>
23 #include <ac/unistd.h>
30 const struct berval slap_EXOP_CANCEL = BER_BVC(LDAP_EXOP_CANCEL);
32 int cancel_extop( Operation *op, SlapReply *rs )
39 assert( ber_bvcmp( &slap_EXOP_CANCEL, &op->ore_reqoid ) == 0 );
41 if ( op->ore_reqdata == NULL ) {
42 rs->sr_text = "no message ID supplied";
43 return LDAP_PROTOCOL_ERROR;
46 ber = ber_init( op->ore_reqdata );
48 rs->sr_text = "internal error";
52 if ( ber_scanf( ber, "{i}", &opid ) == LBER_ERROR ) {
53 rs->sr_text = "message ID parse failed";
54 return LDAP_PROTOCOL_ERROR;
57 (void) ber_free( ber, 1 );
59 Statslog( LDAP_DEBUG_STATS, "%s CANCEL msg=%d\n",
60 op->o_log_prefix, opid, 0, 0, 0 );
63 rs->sr_text = "message ID invalid";
64 return LDAP_PROTOCOL_ERROR;
67 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
68 LDAP_STAILQ_FOREACH( o, &op->o_conn->c_pending_ops, o_next ) {
69 if ( o->o_msgid == opid ) {
70 LDAP_STAILQ_REMOVE( &op->o_conn->c_pending_ops, o, Operation, o_next );
71 LDAP_STAILQ_NEXT(o, o_next) = NULL;
72 op->o_conn->c_n_ops_pending--;
74 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
79 LDAP_STAILQ_FOREACH( o, &op->o_conn->c_ops, o_next ) {
80 if ( o->o_msgid == opid ) {
86 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
89 if ( o->o_cancel != SLAP_CANCEL_NONE ) {
90 rs->sr_text = "message ID already being cancelled";
91 return LDAP_PROTOCOL_ERROR;
94 o->o_cancel = SLAP_CANCEL_REQ;
96 LDAP_STAILQ_FOREACH( op->o_bd, &backendDB, be_next ) {
97 if( !op->o_bd->be_cancel ) continue;
99 op->oq_cancel.rs_msgid = opid;
100 if ( op->o_bd->be_cancel( op, rs ) == LDAP_SUCCESS ) {
105 while ( o->o_cancel == SLAP_CANCEL_REQ ) {
106 ldap_pvt_thread_yield();
109 if ( o->o_cancel == SLAP_CANCEL_ACK ) {
115 o->o_cancel = SLAP_CANCEL_DONE;
117 rs->sr_text = "message ID not found";
118 rc = LDAP_NO_SUCH_OPERATION;