1 /*

     2 * Copyright (c) 2002 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

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

     6 * which accompanies this distribution, and is available

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

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: 

    15 *       Implementation for extension dll loader.

    16 *

    17 */

    18 

    19 

    20 // INCLUDE FILES

    21 #include "CLogsExtensionLoader.h"

    22 #include "TLogsDummyExtensionFactory.h"

    23 #include "ExtensionUID.h"

    24 #include <data_caging_path_literals.hrh>  //KDC_APP_BITMAP_DIR and KDC_SHARED_LIB_DIR

    25 #include <featmgr.h>

    26 

    27 // MODULE DATA STRUCTURES

    28 typedef MLogsExtensionFactory* (*TExtensionEntryPoint)();

    29 

    30 

    31 // ================= MEMBER FUNCTIONS =======================

    32 inline CLogsExtensionLoader::CLogsExtensionLoader()

    33     {

    34     }

    35 

    36 inline void CLogsExtensionLoader::ConstructL()

    37     {

    38     //Tries to load the extension dll and initialise iFactory to point to the loaded dll

    39     TRAPD(err, LoadExtensionDllL());

    40     

    41     //If dll is not part of rom image then initialise iFactory to point to dummy implementation instead

    42     if (err)

    43         {    

    44         if ( iFactory )

    45             {

    46             iFactory->Release();

    47             iFactory = NULL;

    48             }

    49         iFactory = TLogsDummyExtensionFactory::NewL();

    50         }

    51     }

    52 

    53 CLogsExtensionLoader* CLogsExtensionLoader::NewL()

    54     {

    55     CLogsExtensionLoader* self = new (ELeave) CLogsExtensionLoader;

    56     CleanupStack::PushL(self);

    57     self->ConstructL();

    58     CleanupStack::Pop(self);

    59     return self;

    60     }

    61 

    62 CLogsExtensionLoader::~CLogsExtensionLoader()

    63     {      

    64     if ( iFactory )

    65         {

    66         iFactory->Release();

    67         iFactory = NULL;

    68         }

    69     iDll.Close(); // This has to be last 

    70     }

    71 

    72 //Returns refrence to loaded dll's factory functionality or default implementation

    73 MLogsExtensionFactory& CLogsExtensionLoader::ExtensionFactory()

    74     {    

    75     return *iFactory;

    76     }

    77 

    78 TUidType CLogsExtensionLoader::UidType()

    79     {

    80     return TUidType(KNullUid, TUid::Uid(KExtensionDllUID2), KNullUid);

    81     }

    82 

    83 void CLogsExtensionLoader::LoadExtensionDllL()

    84     {

    85     // If voip is not supported then don't try to load the

    86     // extension dll, leave will cause the dummy extension to be

    87     // used instead

    88     if ( !FeatureManager::FeatureSupported(KFeatureIdCommonVoip))

    89         {

    90         User::Leave(KErrNotFound);

    91         }        

    92     else

    93         {

    94         // Set up path+filename for extension dll

    95         TFileName dllFileWithPath;

    96 

    97         dllFileWithPath += KDC_SHARED_LIB_DIR;

    98         dllFileWithPath += KLogsUiExtensionDllFile;  

    99 

   100         User::LeaveIfError(iDll.Load(dllFileWithPath, UidType()));  

   101     

   102         // Get the 1st entry point from the DLL

   103         TExtensionEntryPoint createExtensionFactoryL =

   104             reinterpret_cast<TExtensionEntryPoint>(iDll.Lookup(1));

   105         

   106         if (!createExtensionFactoryL)

   107             {

   108             User::Leave(KErrNotFound);

   109             }

   110 

   111          // Call the entry point to create the test suite

   112         iFactory = createExtensionFactoryL();

   113         if (!iFactory)

   114             {

   115             User::Leave(KErrNotFound);

   116             }

   117         }

   118     }

   119 

   120 // End of File