cryptoservices/certificateandkeymgmt/asn1/printstrenc.cpp
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     1 /*
       
     2 * Copyright (c) 2007-2009 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 * Implementation for class encoding printable strings in ASN1 DER
       
    16 *
       
    17 */
       
    18 
       
    19 
       
    20 #include <asn1enc.h>
       
    21 
       
    22 const TInt8 PrintableStringValid[256]=
       
    23 	{
       
    24 //  0 1 2 3 4 5 6 7 8 9 a b c d e f
       
    25 	0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,  // 0
       
    26 	0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,  // 1
       
    27 	0,0,0,0,0,0,0,1,1,1,0,1,1,1,1,1,  // 2
       
    28 	1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,1,  // 3
       
    29 	0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,  // 4
       
    30 	1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,  // 5 
       
    31 	0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,  // 6
       
    32 	1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,  // 7 
       
    33 	};
       
    34 
       
    35 EXPORT_C CASN1EncPrintableString* CASN1EncPrintableString::NewLC(const TDesC8& aStr)
       
    36 	{
       
    37 	CASN1EncPrintableString* self = new (ELeave) CASN1EncPrintableString();
       
    38 	CleanupStack::PushL(self);
       
    39 	self->ConstructL(aStr);
       
    40 	return self;
       
    41 	}
       
    42 
       
    43 EXPORT_C CASN1EncPrintableString* CASN1EncPrintableString::NewL(const TDesC8& aStr)
       
    44 	{
       
    45 	CASN1EncPrintableString* self = NewLC(aStr);
       
    46 	CleanupStack::Pop(self);
       
    47 	return self;
       
    48 	}
       
    49 
       
    50 EXPORT_C CASN1EncPrintableString::~CASN1EncPrintableString()
       
    51 	{
       
    52 	delete iContents;
       
    53 	}
       
    54 
       
    55 
       
    56 CASN1EncPrintableString::CASN1EncPrintableString()
       
    57 : CASN1EncPrimitive(EASN1PrintableString)
       
    58 	{
       
    59 	}
       
    60 
       
    61 TInt CASN1EncPrintableString::CheckValid(const TDesC8& aString)
       
    62 	{
       
    63 	TInt i;
       
    64 	for (i = 0; i < aString.Length(); ++i)
       
    65 		{
       
    66 		if ((aString[i] > 0x7F) || (PrintableStringValid[aString[i]] == 0))
       
    67 			{
       
    68 			return EFalse;
       
    69 			}
       
    70 		}
       
    71 	return ETrue;
       
    72 	}
       
    73 
       
    74 void CASN1EncPrintableString::ConstructL(const TDesC8& aStr)
       
    75 	{
       
    76 	if (CheckValid(aStr) == EFalse)
       
    77 		{
       
    78 		User::Leave(KErrArgument);
       
    79 		}
       
    80 	iContents = aStr.AllocL();
       
    81 	CASN1EncPrimitive::ConstructL();
       
    82 	}
       
    83 
       
    84 
       
    85 void CASN1EncPrintableString::CalculateContentsLengthDER()
       
    86 	{
       
    87 	iContentsLengthDER = iContents->Length();
       
    88 	}
       
    89 
       
    90 
       
    91 void CASN1EncPrintableString::WriteContentsDERL(TDes8& aBuf) const
       
    92 	{
       
    93 	aBuf.Copy(*iContents);
       
    94 	}