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:  Hashing tool

    15 *

    16 */

    17 

    18 

    19 // INCLUDE FILES

    20 #include "PEngHashTool.h"

    21 // #include <e32std.h>

    22 #include <hash.h>

    23 #include <imcvcodc.h>

    24 #include "PEngStorageGlobals.h"

    25 

    26 

    27 // -----------------------------------------------------------------------------

    28 // PEngHashTool::HashDescriptorL()

    29 // -----------------------------------------------------------------------------

    30 //

    31 HBufC* PEngHashTool::HashDescriptorL(

    32     const TDesC& aDesToHash )

    33     {

    34     HBufC8* temHashBuf = HBufC8::NewLC( aDesToHash.Length() + KMinimalHashSize );

    35     temHashBuf->Des().Copy( aDesToHash );

    36     temHashBuf->Des().LowerCase();

    37     CSHA1* sHA1 = CSHA1::NewL();

    38     CleanupStack::PushL( sHA1 );

    39     sHA1->Reset();

    40 

    41     TPtrC8 hash ( sHA1->Hash( *temHashBuf ) );

    42 

    43     TImCodecB64 b64;

    44     b64.Initialise();

    45 

    46     TPtr8 encodeBuffer( temHashBuf->Des() );

    47     encodeBuffer.Zero();

    48     b64.Encode( hash, encodeBuffer );

    49 

    50     HBufC* hashedId = HBufC::NewL( encodeBuffer.Length() );

    51     TPtr tmp( hashedId->Des() );

    52     tmp.Copy( encodeBuffer );

    53     CleanupStack::PopAndDestroy( 2 ); // sHA1, temHashBuf

    54 

    55 

    56     ReplaceCharacterInDescriptor( tmp, '/', '_' );

    57     ReplaceCharacterInDescriptor( tmp, ':', '_' );

    58     ReplaceCharacterInDescriptor( tmp, '@', '_' );

    59     return hashedId;

    60     }

    61 

    62 

    63 // -----------------------------------------------------------------------------

    64 // PEngHashTool::HashSubfolderL()

    65 // -----------------------------------------------------------------------------

    66 //

    67 HBufC* PEngHashTool::HashStateNameL(

    68     const TDesC& aServerAddress,

    69     const TDesC& aUserName )

    70     {

    71     HBufC* address = HBufC::NewLC( aServerAddress.Length() + aUserName.Length() );

    72     address->Des().Append( aServerAddress );

    73     address->Des().Append( aUserName );

    74     address->Des().LowerCase();

    75     HBufC* folder = HashDescriptorL( *address );

    76     CleanupStack::PopAndDestroy();//address

    77     CleanupStack::PushL( folder );

    78     // KPEngStorageStateSuffix if client wants to attach some

    79     folder = folder->ReAllocL( folder->Length() +

    80                                KPEngStorageStateSuffix().Length() );

    81     CleanupStack::Pop(); // folder

    82     folder->Des().Append( KPEngStorageStateSuffix );

    83     return folder;

    84     }

    85 

    86 

    87 

    88 // -----------------------------------------------------------------------------

    89 // PEngHashTool::ReplaceCharacterInDescriptor()

    90 // Replace characters in descriptor with defined

    91 // (other items were commented in a header).

    92 // -----------------------------------------------------------------------------

    93 //

    94 void PEngHashTool::ReplaceCharacterInDescriptor(

    95     TPtr& aDescriptor,

    96     const TText aConvertFrom,

    97     const TText aConvertTo  )

    98     {

    99     TInt offset;

   100     while ( ( offset = aDescriptor.Locate( aConvertFrom ) ) != KErrNotFound )

   101         {

   102         aDescriptor[ offset ] = aConvertTo;

   103         }

   104     }

   105 

   106 

   107 //  End of File