/*

* Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

* Implementation of CPluginMgr

*

*/

/**

 @file

*/

#include "authserver_impl.h"

#include <authserver/authpatchdata.h>

#include <u32hal.h>

#include <e32svr.h> 

using namespace AuthServer;

TLinearOrder<CAuthPluginInterface> CPluginMgr::SPluginOrder(PluginCompare);

TInt CPluginMgr::PluginCompare(const CAuthPluginInterface& aLhs,

									  const CAuthPluginInterface& aRhs)

  {

  return aLhs.Id() - aRhs.Id();

  }

TInt CPluginMgr::FindById(const TPluginId* aId,

						 const CAuthPluginInterface& aRhs)

  {

  return *aId - aRhs.Id();

  }

CPluginMgr* CPluginMgr::NewLC()

  {

  CPluginMgr* me = new (ELeave) CPluginMgr();

  CleanupStack::PushL(me);

  me->ConstructL();

  return me;

  } 

CPluginMgr* CPluginMgr::NewL()

  {

  CPluginMgr* me = CPluginMgr::NewLC();

  CleanupStack::Pop(me);

  return me;

  }

CPluginMgr::~CPluginMgr()

  {

  ReleasePlugins();

  ReleaseImplInfo();

  }

void CPluginMgr::ConstructL()

  {

  BuildAuthPluginsListL();

  }

CAuthPluginInterface* CPluginMgr::PluginL(const TPluginId& aId)

  {

  TInt idx = iPlugins.FindInOrder<>(aId, CPluginMgr::FindById);

  CAuthPluginInterface* plugin = 0;

  if (idx == KErrNotFound)

	{

	  plugin = CreatePluginImplementationL(aId);

	  iPlugins.InsertInOrder(plugin, SPluginOrder);

	}

  else

	{

	plugin = iPlugins[idx];

	}

  return plugin;

  }

CAuthPluginInterface* CPluginMgr::ImplementationL(TInt aIndex)

	{

	if( aIndex < 0 || aIndex > iPlugins.Count()-1 )

		{

		User::Leave(KErrArgument);

		}

	return iPlugins[aIndex];

	}

const RImplInfoPtrArray& CPluginMgr::ImplementationsL()

    {

    if (iImplArray.Count() == 0) 

        {

        //To load plugins from sources other than ROM the patch 

        // data KEnablePostMarketAuthenticationPlugins must be set to True.

        TUint32 enablePostMarketPlugin = KEnablePostMarketAuthenticationPlugins;

        #ifdef __WINS__

        // Default SymbianOS behavior is to only load auth plugins from ROM.

        enablePostMarketPlugin = 0;

        // For the emulator allow the constant to be patched via epoc.ini

        UserSvr::HalFunction(EHalGroupEmulator, EEmulatorHalIntProperty,

        (TAny*)"KEnablePostMarketAuthenticationPlugins", &enablePostMarketPlugin); // read emulator property (if present)

        #endif

        if(enablePostMarketPlugin == 0)

        	{

         	TEComResolverParams resolverParams;

           	REComSession::ListImplementationsL(KCAuthPluginInterfaceUid,

        									 resolverParams,

        									 KRomOnlyResolverUid,

        									 iImplArray);

            }

         else

         	{

         	REComSession::ListImplementationsL(KCAuthPluginInterfaceUid, iImplArray);

          	}

        }

    return iImplArray;

    }

void CPluginMgr::ReleasePlugins()

  {

  TInt i = iPlugins.Count();

  while (i)

	{

	delete iPlugins[--i];

	}

  i = iPluginDtorUids.Count();

  while(i)

	  {

	  REComSession::DestroyedImplementation(iPluginDtorUids[--i]);

	  }

  iPlugins.Reset();

  iPluginDtorUids.Reset();

  }

void CPluginMgr::ForgetIdentityL(TIdentityId aId)

  {

  ImplementationsL();

  TInt i = iImplArray.Count();

  while (i)

	{

	PluginL(iImplArray[--i]->ImplementationUid().iUid)->Forget(aId);

	}

  }

void CPluginMgr::ReleaseImplInfo()

  {

  TInt i = iImplArray.Count();

  while (i)

	{

	  delete iImplArray[--i];

	}

  iImplArray.Reset();

  }

void CPluginMgr::BuildAuthPluginsListL()

	{

	ReleasePlugins();

  	ReleaseImplInfo();

	ImplementationsL();

  	CAuthPluginInterface* plugin = 0;

  	for( TInt count=0; count < iImplArray.Count(); ++count)

		{

		plugin = CreatePluginImplementationL(iImplArray[count]->ImplementationUid().iUid);

		CleanupStack::PushL(plugin);

		User::LeaveIfError(iPlugins.InsertInOrder(plugin, SPluginOrder));

		CleanupStack::Pop(plugin);

		}

	}

CAuthPluginInterface* CPluginMgr::CreatePluginImplementationL(const TPluginId &aId)

	{

	TEComResolverParams resolverParams;

	TBufC8<16> pluginIdTxt;

	pluginIdTxt.Des().Format(_L8("%x"), aId);

	pluginIdTxt.Des().UpperCase();

	resolverParams.SetDataType(pluginIdTxt);

	//To load plugins from sources other than ROM the patch 

	// data KEnablePostMarketAuthenticationPlugins must be set to True.

	TUint32 enablePostMarketPlugin = KEnablePostMarketAuthenticationPlugins;

#ifdef __WINS__

	// Default SymbianOS behavior is to only load auth plugins from ROM.

	enablePostMarketPlugin = 0;

	// For the emulator allow the constant to be patched via epoc.ini

	UserSvr::HalFunction(EHalGroupEmulator, EEmulatorHalIntProperty,

	(TAny*)"KEnablePostMarketAuthenticationPlugins", &enablePostMarketPlugin); // read emulator property (if present)

#endif

	TAny* plugin = 0;

	TInt err = 0;

	TUid dtor_ID_Key = TUid::Null();

	if(enablePostMarketPlugin == 0) 

	  	{

	  	TRAP(err, plugin = 

		REComSession::CreateImplementationL(KCAuthPluginInterfaceUid,

											dtor_ID_Key,

											resolverParams,

											KRomOnlyResolverUid));

	  	}

	  else

	  	{

	  	TRAP(err, plugin = 

		REComSession::CreateImplementationL(KCAuthPluginInterfaceUid,

											dtor_ID_Key,

											resolverParams));

	  	}

	 if (err == KErrNotFound)

	    {

	    err = KErrAuthServNoSuchPlugin;  

	    }

	 //Add key to plugin destructor keys list .

	 TInt err2 =  iPluginDtorUids.Append(dtor_ID_Key);

	 if(KErrNoMemory == err2)

		 {

		 CAuthPluginInterface* authPlugin = reinterpret_cast<CAuthPluginInterface*>(plugin);

		 delete authPlugin;

		 REComSession::DestroyedImplementation(dtor_ID_Key);

		 User::LeaveNoMemory();

		 }

	 User::LeaveIfError(err);

	return reinterpret_cast<CAuthPluginInterface*>(plugin);

	}