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/* $OpenLDAP: pkg/ldap/servers/slapd/cancel.c,v 1.5.2.5 2004/06/06 04:35:59 hyc Exp $ */
/* cancel.c - LDAP cancel extended operation */
/*
* Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
*/
#include "portable.h"
#include <stdio.h>
#include <ac/krb.h>
#include <ac/socket.h>
#include <ac/string.h>
#include <ac/unistd.h>
#include "slap.h"
#ifdef LDAP_EXOP_X_CANCEL
#include <lber_pvt.h>
#include <lutil.h>
int cancel_extop(
Connection *conn,
Operation *op,
const char *reqoid,
struct berval *reqdata,
char **rspoid,
struct berval **rspdata,
LDAPControl ***rspctrls,
const char **text,
BerVarray *refs )
{
Backend *be;
int rc;
int found = 0;
int opid;
BerElement *ber;
int i;
assert( reqoid != NULL );
assert( strcmp( LDAP_EXOP_X_CANCEL, reqoid ) == 0 );
if ( reqdata == NULL ) {
*text = "no message ID supplied";
return LDAP_PROTOCOL_ERROR;
}
ber = ber_init( reqdata );
if ( ber == NULL ) {
*text = "internal error";
return LDAP_OTHER;
}
if ( ber_scanf( ber, "{i}", &opid ) == LBER_ERROR ) {
*text = "message ID parse failed";
return LDAP_PROTOCOL_ERROR;
}
(void) ber_free( ber, 1 );
if ( opid < 0 ) {
*text = "message ID invalid";
return LDAP_PROTOCOL_ERROR;
}
ldap_pvt_thread_mutex_lock( &conn->c_mutex );
LDAP_STAILQ_FOREACH( op, &conn->c_pending_ops, o_next ) {
if ( op->o_msgid == opid ) {
LDAP_STAILQ_REMOVE( &conn->c_pending_ops, op, slap_op, o_next );
conn->c_n_ops_pending--;
slap_op_free( op );
found = 1;
break;
}
}
ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
if ( found ) return LDAP_SUCCESS;
found = 0;
ldap_pvt_thread_mutex_lock( &conn->c_mutex );
LDAP_STAILQ_FOREACH( op, &conn->c_ops, o_next ) {
if ( op->o_msgid == opid ) {
found = 1;
break;
}
}
if ( !found ) {
#ifdef LDAP_SYNC
for ( i = 0; i < nbackends; i++ ) {
Backend *be = &backends[i];
if( !be->be_cancel ) continue;
ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
if ( be->be_cancel( be, conn, op, opid ) == LDAP_SUCCESS ) {
return LDAP_SUCCESS;
} else {
*text = "message ID not found";
return LDAP_NO_SUCH_OPERATION;
}
}
#else
ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
*text = "message ID not found";
return LDAP_NO_SUCH_OPERATION;
#endif
}
if ( op->o_cancel != SLAP_CANCEL_NONE ) {
ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
*text = "message ID already being cancelled";
return LDAP_PROTOCOL_ERROR;
}
op->o_cancel = SLAP_CANCEL_REQ;
ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
while ( op->o_cancel == SLAP_CANCEL_REQ ) {
ldap_pvt_thread_yield();
}
if ( op->o_cancel == SLAP_CANCEL_ACK ) {
rc = LDAP_SUCCESS;
} else {
rc = op->o_cancel;
}
op->o_cancel = SLAP_CANCEL_DONE;
return rc;
}
#endif /* LDAP_EXOP_X_CANCEL */
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