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1 /* |
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2 * Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of the License "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: |
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15 * This file contains the implementation of the ASN1 Sequence and Sequence-of |
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16 * object, as described in X208 Sections 20 and 21 and X209 Sections 14 and |
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17 * 15. The sequence object can contain an ordered series of zero, one or more |
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18 * other ASN1 objects. The sequence-of object contains zero, one or more of |
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19 * the objects described in its definition. The data encodings of both these |
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20 * objects is identical. The ordering of the objects contained within the |
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21 * sequence is defined outside the scope of this object, normally this would |
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22 * be handled by an object deriving from this object but it may be handled |
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23 * somewhere else. |
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24 * |
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25 */ |
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26 |
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27 |
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28 #include "asn1dec.h" |
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29 |
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30 |
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31 void TASN1DecSequence::CleanupSequence(TAny* aArray) |
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32 { |
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33 CArrayPtrFlat<TASN1DecGeneric>* array = REINTERPRET_CAST(CArrayPtrFlat<TASN1DecGeneric>*, aArray); |
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34 array->ResetAndDestroy(); |
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35 delete array; |
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36 } |
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37 |
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38 EXPORT_C TASN1DecSequence::TASN1DecSequence() |
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39 { |
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40 } |
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41 |
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42 EXPORT_C CArrayPtrFlat<TASN1DecGeneric>* TASN1DecSequence::DecodeDERLC(const TDesC8& aSource,TInt& aPos) |
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43 |
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44 { |
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45 CArrayPtrFlat<TASN1DecGeneric>* ret = new(ELeave) CArrayPtrFlat<TASN1DecGeneric> (1); |
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46 TCleanupItem cleanupSeq(TASN1DecSequence::CleanupSequence, ret); |
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47 CleanupStack::PushL(cleanupSeq); |
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48 TASN1DecGeneric gen(aSource.Right(aSource.Length() - aPos)); |
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49 gen.InitL(); |
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50 aPos += gen.LengthDER(); |
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51 DecodeContentsL(gen.GetContentDER(), *ret); |
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52 return ret; |
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53 } |
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54 |
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55 EXPORT_C CArrayPtrFlat<TASN1DecGeneric>* TASN1DecSequence::DecodeDERLC(const TASN1DecGeneric& aSource) |
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56 { |
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57 CArrayPtrFlat<TASN1DecGeneric>* ret = new(ELeave) CArrayPtrFlat<TASN1DecGeneric> (1); |
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58 TCleanupItem cleanupSeq(TASN1DecSequence::CleanupSequence, ret); |
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59 CleanupStack::PushL(cleanupSeq); |
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60 DecodeContentsL(aSource.GetContentDER(), *ret); |
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61 return ret; |
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62 } |
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63 |
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64 EXPORT_C CArrayPtrFlat<TASN1DecGeneric>* TASN1DecSequence::DecodeDERLC(const TDesC8& aSource,TInt& aPos, TInt aMin, TInt aMax) |
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65 |
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66 { |
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67 CArrayPtrFlat<TASN1DecGeneric>* ret = DecodeDERLC(aSource, aPos); |
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68 TInt count = ret->Count(); |
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69 if ((count < aMin) || (count > aMax)) |
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70 { |
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71 User::Leave(KErrArgument); |
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72 } |
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73 return ret; |
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74 } |
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75 |
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76 EXPORT_C CArrayPtrFlat<TASN1DecGeneric>* TASN1DecSequence::DecodeDERLC(const TASN1DecGeneric& aSource, TInt aMin, TInt aMax) |
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77 { |
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78 CArrayPtrFlat<TASN1DecGeneric>* ret = DecodeDERLC(aSource); |
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79 TInt count = ret->Count(); |
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80 if ((count < aMin) || (count > aMax)) |
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81 { |
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82 User::Leave(KErrArgument); |
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83 } |
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84 return ret; |
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85 } |
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86 |
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87 void TASN1DecSequence::DecodeContentsL(const TDesC8& aSource, CArrayPtrFlat<TASN1DecGeneric>& aDest) |
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88 { |
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89 TInt pos = 0; |
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90 while (pos < aSource.Length()) |
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91 { |
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92 TPtrC8 p(aSource.Right(aSource.Length() - pos)); |
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93 TASN1DecGeneric* Decoded = new(ELeave) TASN1DecGeneric(p); |
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94 CleanupStack::PushL(Decoded); |
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95 Decoded->InitL(); |
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96 aDest.AppendL(Decoded); |
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97 pos+=Decoded->LengthDER(); |
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98 CleanupStack::Pop(); |
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99 } |
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100 } |