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os/security/cryptoservices/certificateandkeymgmt/asn1/setdec.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) 1998-2009 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 ASN1 Set and Set-of object, 

    16 * as described in X208 Sections 22 and 23 and X209 Sections 16 and 17. The 

    17 * set object can contain an ordered series of zero, one or more other ASN1 

    18 * objects. The set-of object contains zero, one or more of the objects 

    19 * described in its definition. The data encodings of both these objects is 

    20 * identical. The ordering of the elements contained within set objects is not

    21 * significant.

    22 * The implementation of sets is pretty much the same as that for sequences 

    23 * (indeed it has started from a straight cut'n'paste) but there are some 

    24 * significant differences with regard to ordering of items within the set,

    25 * comparison and retrieval of items.

    26 *

    27 */

    28 

    29 

    30 #include "asn1dec.h"

    31 

    32 void TASN1DecSet::CleanupSet(TAny* aArray)

    33 	{

    34 	CArrayPtrFlat<TASN1DecGeneric>* array = REINTERPRET_CAST(CArrayPtrFlat<TASN1DecGeneric>*, aArray);

    35 	array->ResetAndDestroy();

    36 	delete array;

    37 	}

    38 

    39 EXPORT_C TASN1DecSet::TASN1DecSet()

    40 	{

    41 	}

    42 

    43 

    44 EXPORT_C CArrayPtrFlat<TASN1DecGeneric>* TASN1DecSet::NewDERLC(const TDesC8& aSource)

    45 // this whole things needs looking at!

    46 	{

    47 	TInt Pos=0;

    48 	CArrayPtrFlat<TASN1DecGeneric>* ret = new(ELeave) CArrayPtrFlat<TASN1DecGeneric> (1);

    49 	TCleanupItem cleanupSeq(TASN1DecSet::CleanupSet, ret);

    50 	CleanupStack::PushL(cleanupSeq);

    51 	TASN1DecGeneric gen(aSource);

    52 	gen.InitL();

    53 	DecodeContentsL(gen.GetContentDER(), Pos, *ret);

    54 	return ret;

    55 	}

    56 

    57 EXPORT_C CArrayPtrFlat<TASN1DecGeneric>* TASN1DecSet::DecodeDERLC(const TDesC8& aSource,TInt& aPos)

    58 

    59 	{

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

    61 	return TASN1DecSet::NewDERLC(Ptr);

    62 	}

    63 

    64 EXPORT_C CArrayPtrFlat<TASN1DecGeneric>* TASN1DecSet::DecodeDERLC(const TASN1DecGeneric& aSource)

    65 	{

    66 	TInt pos = 0;

    67 	CArrayPtrFlat<TASN1DecGeneric>* ret = new(ELeave) CArrayPtrFlat<TASN1DecGeneric> (1);

    68 	TCleanupItem cleanupSeq(TASN1DecSet::CleanupSet, ret);

    69 	CleanupStack::PushL(cleanupSeq);

    70 	DecodeContentsL(aSource.GetContentDER(), pos, *ret);

    71 	return ret;

    72 	}

    73 

    74 EXPORT_C CArrayPtrFlat<TASN1DecGeneric>* TASN1DecSet::DecodeDERLC(const TDesC8& aSource,TInt& aPos, TInt aMin, TInt aMax)

    75 

    76 	{

    77 	CArrayPtrFlat<TASN1DecGeneric>* res = DecodeDERLC(aSource, aPos);

    78 	TInt count = res->Count();

    79 	if ((count < aMin) || (count > aMax))

    80 		{

    81 		User::Leave(KErrArgument);

    82 		}

    83 	return res;

    84 	}

    85 

    86 EXPORT_C CArrayPtrFlat<TASN1DecGeneric>* TASN1DecSet::DecodeDERLC(const TASN1DecGeneric& aSource,  TInt aMin, TInt aMax)

    87 	{

    88 	CArrayPtrFlat<TASN1DecGeneric>* res = DecodeDERLC(aSource);

    89 	TInt count = res->Count();

    90 	if ((count < aMin) || (count > aMax))

    91 		{

    92 		User::Leave(KErrArgument);

    93 		}

    94 	return res;

    95 	}

    96 

    97 void TASN1DecSet::DecodeContentsL(const TDesC8& aSource, TInt& aPos, CArrayPtrFlat<TASN1DecGeneric>& aDest)

    98 	{

    99 	while (aPos < aSource.Length())

   100 		{

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

   102 		TASN1DecGeneric* Decoded = new(ELeave) TASN1DecGeneric(Ptr);

   103 		CleanupStack::PushL(Decoded);

   104 		Decoded->InitL();

   105 		aDest.AppendL(Decoded);

   106 		aPos+=Decoded->LengthDER();

   107 		CleanupStack::Pop();//i think this should be just 'pop': need to find out

   108 		}

   109 	}

   110
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