1 /*

     2 * Copyright (c) 2001-2009 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 DER encoding of GeneralizedTime.

    16 * Following from the decoding class

    17 * 1) fractions of seconds are not supported

    18 * 2) regional time zone offsets are not supported

    19 *

    20 */

    21 

    22 

    23 #include "panic.h"

    24 

    25 #include <asn1enc.h>

    26 

    27 const TUint KEncodingLengthWithoutSeconds = 13;

    28 const TUint KEncodingLengthWithSeconds = 15;

    29 

    30 

    31 EXPORT_C CASN1EncGeneralizedTime* CASN1EncGeneralizedTime::NewLC(const TTime& aTime)

    32 	{

    33 	CASN1EncGeneralizedTime* self = new (ELeave) CASN1EncGeneralizedTime(aTime);

    34 	CleanupStack::PushL(self);

    35 	self->ConstructL();

    36 	return self;

    37 	}

    38 

    39 EXPORT_C CASN1EncGeneralizedTime* CASN1EncGeneralizedTime::NewL(const TTime& aTime)

    40 	{

    41 	CASN1EncGeneralizedTime* self = NewLC(aTime);

    42 	CleanupStack::Pop(self);

    43 	return self;

    44 	}

    45 

    46 CASN1EncGeneralizedTime::CASN1EncGeneralizedTime(const TTime& aTime)

    47 : CASN1EncPrimitive(EASN1GeneralizedTime), iDateTime(aTime.DateTime())

    48 	{

    49 	__ASSERT_ALWAYS(iDateTime.Year() < 10000, Panic(KErrYearTooBigForGeneralizedTime));

    50 	}

    51 

    52 

    53 void CASN1EncGeneralizedTime::CalculateContentsLengthDER()

    54 	{

    55 	iContentsLengthDER = 

    56 		iDateTime.Second() ? KEncodingLengthWithSeconds : KEncodingLengthWithoutSeconds;

    57 	}

    58 

    59 

    60 void CASN1EncGeneralizedTime::WriteContentsDERL(TDes8& aBuf) const

    61 	{

    62 	aBuf.SetLength(0);

    63 	aBuf.AppendNumFixedWidth(iDateTime.Year(), EDecimal, 4);

    64 	aBuf.AppendNumFixedWidth(iDateTime.Month() + 1, EDecimal, 2);  // Our months are zero-based

    65 	aBuf.AppendNumFixedWidth(iDateTime.Day() + 1, EDecimal, 2);    // Our days are zero-based

    66 	aBuf.AppendNumFixedWidth(iDateTime.Hour(), EDecimal, 2);

    67 	aBuf.AppendNumFixedWidth(iDateTime.Minute(), EDecimal, 2);

    68 	if (iDateTime.Second())

    69 		{

    70 		aBuf.AppendNumFixedWidth(iDateTime.Second(), EDecimal, 2);

    71 		}

    72 

    73 	aBuf.Append('Z');

    74 	}