gecko/security/nss/lib/ckfw/dbm/find.c
2008-06-06 08:40:11 -04:00

170 lines
4.8 KiB
C

/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla 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/MPL/
*
* 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 the Netscape security libraries.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1994-2000
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifdef DEBUG
static const char CVS_ID[] = "@(#) $RCSfile: find.c,v $ $Revision: 1.4 $ $Date: 2006/03/02 22:48:54 $";
#endif /* DEBUG */
#include "ckdbm.h"
static void
nss_dbm_mdFindObjects_Final
(
NSSCKMDFindObjects *mdFindObjects,
NSSCKFWFindObjects *fwFindObjects,
NSSCKMDSession *mdSession,
NSSCKFWSession *fwSession,
NSSCKMDToken *mdToken,
NSSCKFWToken *fwToken,
NSSCKMDInstance *mdInstance,
NSSCKFWInstance *fwInstance
)
{
nss_dbm_find_t *find = (nss_dbm_find_t *)mdFindObjects->etc;
/* Locks might have system resources associated */
(void)NSSCKFWMutex_Destroy(find->list_lock);
(void)NSSArena_Destroy(find->arena);
}
static NSSCKMDObject *
nss_dbm_mdFindObjects_Next
(
NSSCKMDFindObjects *mdFindObjects,
NSSCKFWFindObjects *fwFindObjects,
NSSCKMDSession *mdSession,
NSSCKFWSession *fwSession,
NSSCKMDToken *mdToken,
NSSCKFWToken *fwToken,
NSSCKMDInstance *mdInstance,
NSSCKFWInstance *fwInstance,
NSSArena *arena,
CK_RV *pError
)
{
nss_dbm_find_t *find = (nss_dbm_find_t *)mdFindObjects->etc;
struct nss_dbm_dbt_node *node;
nss_dbm_object_t *object;
NSSCKMDObject *rv;
while(1) {
/* Lock */
{
*pError = NSSCKFWMutex_Lock(find->list_lock);
if( CKR_OK != *pError ) {
return (NSSCKMDObject *)NULL;
}
node = find->found;
if( (struct nss_dbm_dbt_node *)NULL != node ) {
find->found = node->next;
}
*pError = NSSCKFWMutex_Unlock(find->list_lock);
if( CKR_OK != *pError ) {
/* screwed now */
return (NSSCKMDObject *)NULL;
}
}
if( (struct nss_dbm_dbt_node *)NULL == node ) {
break;
}
if( nss_dbm_db_object_still_exists(node->dbt) ) {
break;
}
}
if( (struct nss_dbm_dbt_node *)NULL == node ) {
*pError = CKR_OK;
return (NSSCKMDObject *)NULL;
}
object = nss_ZNEW(arena, nss_dbm_object_t);
if( (nss_dbm_object_t *)NULL == object ) {
*pError = CKR_HOST_MEMORY;
return (NSSCKMDObject *)NULL;
}
object->arena = arena;
object->handle = nss_ZNEW(arena, nss_dbm_dbt_t);
if( (nss_dbm_dbt_t *)NULL == object->handle ) {
*pError = CKR_HOST_MEMORY;
return (NSSCKMDObject *)NULL;
}
object->handle->my_db = node->dbt->my_db;
object->handle->dbt.size = node->dbt->dbt.size;
object->handle->dbt.data = nss_ZAlloc(arena, node->dbt->dbt.size);
if( (void *)NULL == object->handle->dbt.data ) {
*pError = CKR_HOST_MEMORY;
return (NSSCKMDObject *)NULL;
}
(void)memcpy(object->handle->dbt.data, node->dbt->dbt.data, node->dbt->dbt.size);
rv = nss_dbm_mdObject_factory(object, pError);
if( (NSSCKMDObject *)NULL == rv ) {
return (NSSCKMDObject *)NULL;
}
return rv;
}
NSS_IMPLEMENT NSSCKMDFindObjects *
nss_dbm_mdFindObjects_factory
(
nss_dbm_find_t *find,
CK_RV *pError
)
{
NSSCKMDFindObjects *rv;
rv = nss_ZNEW(find->arena, NSSCKMDFindObjects);
if( (NSSCKMDFindObjects *)NULL == rv ) {
*pError = CKR_HOST_MEMORY;
return (NSSCKMDFindObjects *)NULL;
}
rv->etc = (void *)find;
rv->Final = nss_dbm_mdFindObjects_Final;
rv->Next = nss_dbm_mdFindObjects_Next;
return rv;
}