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#pragma ident "%Z%%M% %I% %E% SMI"
/*
* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is Mozilla Communicator client code, released
* March 31, 1998.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998-1999 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
/*
* Copyright (c) 1990 Regents of the University of Michigan.
* All rights reserved.
*/
/*
* abandon.c
*/
#if 0
#ifndef lint
static char copyright[] = "@(#) Copyright (c) 1990 Regents of the University of Michigan.\nAll rights reserved.\n";
#endif
#endif
#include "ldap-int.h"
static int do_abandon( LDAP *ld, int origid, int msgid,
LDAPControl **serverctrls, LDAPControl **clientctrls );
/*
* ldap_abandon - perform an ldap abandon operation. Parameters:
*
* ld LDAP descriptor
* msgid The message id of the operation to abandon
*
* ldap_abandon returns 0 if everything went ok, -1 otherwise.
*
* Example:
* ldap_abandon( ld, msgid );
*/
int
LDAP_CALL
ldap_abandon( LDAP *ld, int msgid )
{
LDAPDebug( LDAP_DEBUG_TRACE, "ldap_abandon %d\n", msgid, 0, 0 );
if ( ldap_abandon_ext( ld, msgid, NULL, NULL ) == LDAP_SUCCESS ) {
return( 0 );
}
return( -1 );
}
/*
* LDAPv3 extended abandon.
* Returns an LDAP error code.
*/
int
LDAP_CALL
ldap_abandon_ext( LDAP *ld, int msgid, LDAPControl **serverctrls,
LDAPControl **clientctrls )
{
int rc;
LDAPDebug( LDAP_DEBUG_TRACE, "ldap_abandon_ext %d\n", msgid, 0, 0 );
if ( !NSLDAPI_VALID_LDAP_POINTER( ld )) {
return( LDAP_PARAM_ERROR );
}
LDAP_MUTEX_LOCK( ld, LDAP_CONN_LOCK );
LDAP_MUTEX_LOCK( ld, LDAP_REQ_LOCK );
rc = do_abandon( ld, msgid, msgid, serverctrls, clientctrls );
/*
* XXXmcs should use cache function pointers to hook in memcache
*/
ldap_memcache_abandon( ld, msgid );
LDAP_MUTEX_UNLOCK( ld, LDAP_REQ_LOCK );
LDAP_MUTEX_UNLOCK( ld, LDAP_CONN_LOCK );
return( rc );
}
/*
* Abandon all outstanding requests for msgid (included child requests
* spawned when chasing referrals). This function calls itself recursively.
* No locking is done is this function so it must be done by the caller.
* Returns an LDAP error code and sets it in LDAP *ld as well
*/
static int
do_abandon( LDAP *ld, int origid, int msgid, LDAPControl **serverctrls,
LDAPControl **clientctrls )
{
BerElement *ber;
int i, bererr, lderr, sendabandon;
Sockbuf *sb;
LDAPRequest *lr = NULL;
/*
* An abandon request looks like this:
* AbandonRequest ::= MessageID
*/
LDAPDebug( LDAP_DEBUG_TRACE, "do_abandon origid %d, msgid %d\n",
origid, msgid, 0 );
/* optimistic */
lderr = LDAP_SUCCESS;
/*
* this is not the best implementation...
* the code special cases the when async io is enabled.
* The logic is clear this way, at the cost of code bloat.
* This logic should be cleaned up post nova 4.5 rtm
*/
if (ld->ld_options & LDAP_BITOPT_ASYNC)
{
/* Don't send an abandon message unless there is something to abandon. */
sendabandon = 0;
/* Find the request that we are abandoning. */
if (ld->ld_requests != NULL) {
for ( lr = ld->ld_requests; lr != NULL; lr = lr->lr_next ) {
if ( lr->lr_msgid == msgid ) { /* this message */
if ( origid == msgid && lr->lr_parent != NULL ) {
/* don't let caller abandon child requests! */
lderr = LDAP_PARAM_ERROR;
goto set_errorcode_and_return;
}
if ( lr->lr_status == LDAP_REQST_INPROGRESS ) {
/* We only need to send an abandon message if the request
* is in progress.
*/
sendabandon = 1;
}
break;
}
if ( lr->lr_origid == msgid ) { /* child: abandon it */
(void)do_abandon( ld, msgid, lr->lr_msgid,
serverctrls, clientctrls );
/* we ignore errors from child abandons... */
}
}
}
}
else
{
sendabandon = 1;
/* find the request that we are abandoning */
for ( lr = ld->ld_requests; lr != NULL; lr = lr->lr_next ) {
if ( lr->lr_msgid == msgid ) { /* this message */
break;
}
if ( lr->lr_origid == msgid ) { /* child: abandon it */
(void)do_abandon( ld, msgid, lr->lr_msgid,
serverctrls, clientctrls );
/* we ignore errors from child abandons... */
}
}
if ( lr != NULL ) {
if ( origid == msgid && lr->lr_parent != NULL ) {
/* don't let caller abandon child requests! */
lderr = LDAP_PARAM_ERROR;
goto set_errorcode_and_return;
}
if ( lr->lr_status != LDAP_REQST_INPROGRESS ) {
/* no need to send abandon message */
sendabandon = 0;
}
}
}
if ( ldap_msgdelete( ld, msgid ) == 0 ) {
/* we had all the results and deleted them */
goto set_errorcode_and_return;
}
if ( sendabandon ) {
/* create a message to send */
if (( lderr = nsldapi_alloc_ber_with_options( ld, &ber )) ==
LDAP_SUCCESS ) {
LDAP_MUTEX_LOCK( ld, LDAP_MSGID_LOCK );
#ifdef CLDAP
if ( ld->ld_dbp->sb_naddr > 0 ) {
bererr = ber_printf( ber, "{isti",
++ld->ld_msgid, ld->ld_cldapdn,
LDAP_REQ_ABANDON, msgid );
} else {
#endif /* CLDAP */
bererr = ber_printf( ber, "{iti",
++ld->ld_msgid, LDAP_REQ_ABANDON, msgid );
#ifdef CLDAP
}
#endif /* CLDAP */
LDAP_MUTEX_UNLOCK( ld, LDAP_MSGID_LOCK );
if ( bererr == -1 ||
( lderr = nsldapi_put_controls( ld, serverctrls,
1, ber )) != LDAP_SUCCESS ) {
lderr = LDAP_ENCODING_ERROR;
ber_free( ber, 1 );
} else {
/* send the message */
if ( lr != NULL ) {
sb = lr->lr_conn->lconn_sb;
} else {
sb = ld->ld_sbp;
}
if ( nsldapi_ber_flush( ld, sb, ber, 1, 0 )
!= 0 ) {
lderr = LDAP_SERVER_DOWN;
}
}
}
}
if ( lr != NULL ) {
if ( sendabandon ) {
nsldapi_free_connection( ld, lr->lr_conn, NULL, NULL,
0, 1 );
}
if ( origid == msgid ) {
nsldapi_free_request( ld, lr, 0 );
}
}
LDAP_MUTEX_LOCK( ld, LDAP_ABANDON_LOCK );
if ( ld->ld_abandoned == NULL ) {
if ( (ld->ld_abandoned = (int *)NSLDAPI_MALLOC( 2
* sizeof(int) )) == NULL ) {
lderr = LDAP_NO_MEMORY;
LDAP_MUTEX_UNLOCK( ld, LDAP_ABANDON_LOCK );
goto set_errorcode_and_return;
}
i = 0;
} else {
for ( i = 0; ld->ld_abandoned[i] != -1; i++ )
; /* NULL */
if ( (ld->ld_abandoned = (int *)NSLDAPI_REALLOC( (char *)
ld->ld_abandoned, (i + 2) * sizeof(int) )) == NULL ) {
lderr = LDAP_NO_MEMORY;
LDAP_MUTEX_UNLOCK( ld, LDAP_ABANDON_LOCK );
goto set_errorcode_and_return;
}
}
ld->ld_abandoned[i] = msgid;
ld->ld_abandoned[i + 1] = -1;
LDAP_MUTEX_UNLOCK( ld, LDAP_ABANDON_LOCK );
set_errorcode_and_return:
LDAP_SET_LDERRNO( ld, lderr, NULL, NULL );
return( lderr );
}
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