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os/security/cryptoservices/certificateandkeymgmt/x500/dstringdec.cpp
author sl@SLION-WIN7.fritz.box
Fri, 15 Jun 2012 03:10:57 +0200
changeset 0 bde4ae8d615e
permissions -rw-r--r--
First public contribution. 
     1 /*

     2 * Copyright (c) 2000-2009 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 the License "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 * This file contains the implementation of the directory string ASN1 object

    16 *

    17 */

    18 

    19 

    20 #include "X500dec.h"

    21 

    22 /*

    23 

    24   This file contains the implementation of the following ASN1 data structures:

    25 

    26 	DirectoryString ::= CHOICE {

    27 		  teletexString             TeletexString (SIZE (1..MAX)),

    28 		  printableString           PrintableString (SIZE (1..MAX)),

    29 		  universalString           UniversalString (SIZE (1..MAX)),

    30 		  utf8String              UTF8String (SIZE (1..MAX)),

    31 		  bmpString               BMPString (SIZE(1..MAX))   }

    32 

    33 */

    34 

    35 TASN1DecX500DirectoryString::TASN1DecX500DirectoryString(void):

    36 iMaxLength(KMaxTInt)

    37 	{

    38 	}

    39 

    40 HBufC* TASN1DecX500DirectoryString::DecodeDERL(const TDesC8& aSource,TInt& aPos, TInt aMaxLength)

    41 

    42 	{

    43 	TPtrC8 Ptr=aSource.Right(aSource.Length()-aPos);

    44 	TASN1DecGeneric gen(Ptr);

    45 	gen.InitL();

    46 	aPos+=gen.LengthDER();

    47 	HBufC* Object=DecodeContentsL(gen, aMaxLength);

    48 	return Object;

    49 	}

    50 

    51 HBufC* TASN1DecX500DirectoryString::DecodeDERL(const TASN1DecGeneric& aSource, TInt aMaxLength)

    52 

    53 	{

    54 	return DecodeContentsL(aSource, aMaxLength);

    55 	}

    56 

    57 HBufC* TASN1DecX500DirectoryString::DecodeContentsL(const TASN1DecGeneric& aSource, TInt aMaxLength)

    58 	{

    59 	HBufC* res = NULL;

    60 	switch (aSource.Tag())

    61 		{

    62 		case EASN1TeletexString:

    63 			{

    64 			TASN1DecTeletexString tStr;

    65 			res = tStr.DecodeDERL(aSource);

    66 			break;

    67 			}

    68 		case EASN1PrintableString:

    69 			{

    70 			TASN1DecPrintableString pStr;

    71 			res = pStr.DecodeDERL(aSource);

    72 			break;

    73 			}

    74 		case EASN1IA5String:

    75 			{

    76 			TASN1DecIA5String pStr;

    77 			res = pStr.DecodeDERL(aSource);

    78 			break;

    79 			}

    80 		case EASN1UTF8String:

    81 			{

    82 			TASN1DecUTF8String pStr;

    83 			res = pStr.DecodeDERL(aSource);

    84 			break;

    85 			}												

    86 		case EASN1BMPString:

    87 			{

    88 			TASN1DecBMPString pStr;

    89 			res = pStr.DecodeDERL(aSource);

    90 			break;	

    91 			}									

    92 		default:

    93 			{

    94 			User::Leave(KErrNotSupported);

    95 			break;

    96 			}

    97 		}

    98 	if (res->Length() > aMaxLength)

    99 		{

   100 		delete res;

   101 		User::Leave(KErrArgument);

   102 		}

   103 	return res;

   104 	}

   105 

   106 void TASN1DecX500DirectoryString::SetMaxLength(TInt aLength)

   107 // perhaps this should have some kind of testing to make sure the current 

   108 // contents are valid...this is not as easy as it might first appear, the 

   109 // contents might be eight or sixteen bits.

   110 	{

   111 	iMaxLength=aLength;

   112 	}
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