1 /*

     2 * Copyright (c) 2002-2005 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: Header declaration

    15 *

    16 */

    17 

    18 

    19 

    20 

    21 

    22 

    23 

    24 

    25 

    26 

    27 #ifndef CCGUIDGEN_H

    28 #define CCGUIDGEN_H

    29 

    30 // INCLUDES

    31 #include <e32base.h>

    32 #include <e32std.h>

    33 

    34 // CONSTANTS

    35 _LIT8(KSenUuidPrefix, "uuid:"); // GUID is valid URN

    36 const TInt KSenUuidMaxHostIdLength = 64;

    37 const TInt KSenUuidMaxInt64Length = 20;

    38 const TInt KSenUuidNumOfSlashes = 4;

    39 const TInt KSenUuidHexWidth = 2;

    40 const TInt KSenUuidPrefixLength = 5; // KSenUuidPrefix().Length(); 

    41 const TInt KSenUuidHashMultiplier = 2;

    42 const TInt KSenUuidHashReserved = 2;

    43 const TInt KSenUuidMaxHashLength = KSenUuidMaxHostIdLength + KSenUuidMaxInt64Length * KSenUuidHashMultiplier + KSenUuidHashReserved;

    44 const TInt KSenUuidMaxLength = KSenUuidPrefixLength + KSenUuidMaxHashLength * KSenUuidHexWidth + KSenUuidNumOfSlashes; 

    45 

    46 // FORWARD DECLARATIONS

    47 class CMD5;

    48 

    49 // CLASS DECLARATION

    50 class CSenGuidGen : public CBase

    51     {

    52     public: // Constructors and destructor

    53         

    54         IMPORT_C static CSenGuidGen* NewL();

    55         IMPORT_C static CSenGuidGen* NewLC();

    56         ~CSenGuidGen();

    57         

    58         // New functions

    59         

    60         /**

    61         *  Generate totally random (but not cryptographically strong)

    62         *  GUIDs. The GUID is based on the MD5 hash of a random number

    63         *  and the current time. Some kind of host ID should be also

    64         *  used but the author did not find an easy way of getting it.

    65         */

    66         IMPORT_C HBufC* GetRandomGuidLC();

    67         IMPORT_C HBufC8* GetRandomGuid8LC();

    68         IMPORT_C HBufC16* GetRandomGuid16LC();

    69         

    70     private:

    71     /**

    72     * C++ default constructor.

    73         */

    74         CSenGuidGen();

    75         /**

    76         * By default Symbian 2nd phase constructor is private.

    77         */  

    78         void ConstructL();

    79         

    80         // New functions

    81         

    82         TPtrC8 GetRandomHash();

    83         

    84     private: // Data

    85         TInt64 iSeed;

    86         HBufC8 *ipHostId;

    87         CMD5 *ipMd5HashGen;

    88     };

    89 

    90 #endif // CCGUIDGEN_H

    91 

    92 // End of File

    93