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/* operation.c - routines to deal with pending ldap operations */
/* $OpenLDAP$ */
/* 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"
#ifdef LDAP_SLAPI
#include "slapi/slapi.h"
#endif
static ldap_pvt_thread_mutex_t slap_op_mutex;
static time_t last_time;
static int last_incr;
void slap_op_init(void)
{
ldap_pvt_thread_mutex_init( &slap_op_mutex );
}
void slap_op_destroy(void)
{
ldap_pvt_thread_mutex_destroy( &slap_op_mutex );
}
static void
slap_op_q_destroy( void *key, void *data )
{
Operation *op, *op2;
for ( op = data; op; op = op2 ) {
op2 = LDAP_STAILQ_NEXT( op, o_next );
ber_memfree_x( op, NULL );
}
}
void
slap_op_groups_free( Operation *op )
{
GroupAssertion *g, *n;
for ( g = op->o_groups; g; g = n ) {
n = g->ga_next;
slap_sl_free( g, op->o_tmpmemctx );
}
op->o_groups = NULL;
}
void
slap_op_free( Operation *op, void *ctx )
{
OperationBuffer *opbuf;
assert( LDAP_STAILQ_NEXT(op, o_next) == NULL );
/* paranoia */
op->o_abandon = 1;
if ( op->o_ber != NULL ) {
ber_free( op->o_ber, 1 );
}
if ( !BER_BVISNULL( &op->o_dn ) ) {
ch_free( op->o_dn.bv_val );
}
if ( !BER_BVISNULL( &op->o_ndn ) ) {
ch_free( op->o_ndn.bv_val );
}
if ( !BER_BVISNULL( &op->o_authmech ) ) {
ch_free( op->o_authmech.bv_val );
}
if ( op->o_ctrls != NULL ) {
slap_free_ctrls( op, op->o_ctrls );
}
#ifdef LDAP_CONNECTIONLESS
if ( op->o_res_ber != NULL ) {
ber_free( op->o_res_ber, 1 );
}
#endif
if ( op->o_groups ) {
slap_op_groups_free( op );
}
#if defined( LDAP_SLAPI )
if ( slapi_plugins_used ) {
slapi_int_free_object_extensions( SLAPI_X_EXT_OPERATION, op );
}
#endif /* defined( LDAP_SLAPI ) */
if ( !BER_BVISNULL( &op->o_csn ) ) {
op->o_tmpfree( op->o_csn.bv_val, op->o_tmpmemctx );
}
if ( op->o_pagedresults_state != NULL ) {
op->o_tmpfree( op->o_pagedresults_state, op->o_tmpmemctx );
}
/* Selectively zero out the struct. Ignore fields that will
* get explicitly initialized later anyway. Keep o_abandon intact.
*/
opbuf = (OperationBuffer *) op;
op->o_bd = NULL;
BER_BVZERO( &op->o_req_dn );
BER_BVZERO( &op->o_req_ndn );
memset( op->o_hdr, 0, sizeof( *op->o_hdr ));
memset( &op->o_request, 0, sizeof( op->o_request ));
memset( &op->o_do_not_cache, 0, sizeof( Operation ) - offsetof( Operation, o_do_not_cache ));
memset( opbuf->ob_controls, 0, sizeof( opbuf->ob_controls ));
op->o_controls = opbuf->ob_controls;
if ( ctx ) {
Operation *op2 = NULL;
ldap_pvt_thread_pool_setkey( ctx, (void *)slap_op_free,
op, slap_op_q_destroy, (void **)&op2, NULL );
LDAP_STAILQ_NEXT( op, o_next ) = op2;
if ( op2 ) {
op->o_tincr = op2->o_tincr + 1;
/* No more than 10 ops on per-thread free list */
if ( op->o_tincr > 10 ) {
ldap_pvt_thread_pool_setkey( ctx, (void *)slap_op_free,
op2, slap_op_q_destroy, NULL, NULL );
ber_memfree_x( op, NULL );
}
} else {
op->o_tincr = 1;
}
} else {
ber_memfree_x( op, NULL );
}
}
void
slap_op_time(time_t *t, int *nop)
{
ldap_pvt_thread_mutex_lock( &slap_op_mutex );
*t = slap_get_time();
if ( *t == last_time ) {
*nop = ++last_incr;
} else {
last_time = *t;
last_incr = 0;
*nop = 0;
}
ldap_pvt_thread_mutex_unlock( &slap_op_mutex );
}
Operation *
slap_op_alloc(
BerElement *ber,
ber_int_t msgid,
ber_tag_t tag,
ber_int_t id,
void *ctx )
{
Operation *op = NULL;
if ( ctx ) {
void *otmp = NULL;
ldap_pvt_thread_pool_getkey( ctx, (void *)slap_op_free, &otmp, NULL );
if ( otmp ) {
op = otmp;
otmp = LDAP_STAILQ_NEXT( op, o_next );
ldap_pvt_thread_pool_setkey( ctx, (void *)slap_op_free,
otmp, slap_op_q_destroy, NULL, NULL );
op->o_abandon = 0;
op->o_cancel = 0;
}
}
if (!op) {
op = (Operation *) ch_calloc( 1, sizeof(OperationBuffer) );
op->o_hdr = &((OperationBuffer *) op)->ob_hdr;
op->o_controls = ((OperationBuffer *) op)->ob_controls;
}
op->o_ber = ber;
op->o_msgid = msgid;
op->o_tag = tag;
slap_op_time( &op->o_time, &op->o_tincr );
op->o_opid = id;
#if defined( LDAP_SLAPI )
if ( slapi_plugins_used ) {
slapi_int_create_object_extensions( SLAPI_X_EXT_OPERATION, op );
}
#endif /* defined( LDAP_SLAPI ) */
return( op );
}
slap_op_t
slap_req2op( ber_tag_t tag )
{
switch ( tag ) {
case LDAP_REQ_BIND:
return SLAP_OP_BIND;
case LDAP_REQ_UNBIND:
return SLAP_OP_UNBIND;
case LDAP_REQ_ADD:
return SLAP_OP_ADD;
case LDAP_REQ_DELETE:
return SLAP_OP_DELETE;
case LDAP_REQ_MODRDN:
return SLAP_OP_MODRDN;
case LDAP_REQ_MODIFY:
return SLAP_OP_MODIFY;
case LDAP_REQ_COMPARE:
return SLAP_OP_COMPARE;
case LDAP_REQ_SEARCH:
return SLAP_OP_SEARCH;
case LDAP_REQ_ABANDON:
return SLAP_OP_ABANDON;
case LDAP_REQ_EXTENDED:
return SLAP_OP_EXTENDED;
}
return SLAP_OP_LAST;
}
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