/* ***** 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) 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 ***** */

#include "nsNSSCertCache.h"
#include "nsAutoLock.h"
#include "cert.h"
#include "nsCOMPtr.h"
#include "nsIInterfaceRequestor.h"
#include "nsNSSHelper.h"

NS_IMPL_THREADSAFE_ISUPPORTS1(nsNSSCertCache, nsINSSCertCache)

nsNSSCertCache::nsNSSCertCache()
:mCertList(nsnull)
{
  mutex = PR_NewLock();
}

nsNSSCertCache::~nsNSSCertCache()
{
  nsNSSShutDownPreventionLock locker;
  if (isAlreadyShutDown())
    return;

  destructorSafeDestroyNSSReference();
  shutdown(calledFromObject);
}

void nsNSSCertCache::virtualDestroyNSSReference()
{
  destructorSafeDestroyNSSReference();
}

void nsNSSCertCache::destructorSafeDestroyNSSReference()
{
  if (isAlreadyShutDown())
    return;

  if (mCertList) {
    CERT_DestroyCertList(mCertList);
  }
  if (mutex) {
    PR_DestroyLock(mutex);
    mutex = nsnull;
  }
}

NS_IMETHODIMP
nsNSSCertCache::CacheAllCerts()
{
  nsNSSShutDownPreventionLock locker;
  if (isAlreadyShutDown())
    return NS_ERROR_NOT_AVAILABLE;

  {
    nsAutoLock lock(mutex);
    if (mCertList) {
      CERT_DestroyCertList(mCertList);
      mCertList = nsnull;
    }
  }

  nsCOMPtr<nsIInterfaceRequestor> cxt = new PipUIContext();
  
  CERTCertList *newList = PK11_ListCerts(PK11CertListUnique, cxt);

  if (newList) {
    nsAutoLock lock(mutex);
    mCertList = newList;
  }
  
  return NS_OK;
}

void* nsNSSCertCache::GetCachedCerts()
{
  if (isAlreadyShutDown())
    return nsnull;

  nsAutoLock lock(mutex);
  return mCertList;
}
