diff -r 000000000000 -r ba25891c3a9e secureswitools/swisistools/source/sisxlibrary/fieldroot.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/secureswitools/swisistools/source/sisxlibrary/fieldroot.cpp Thu Dec 17 08:51:10 2009 +0200 @@ -0,0 +1,196 @@ +/* +* Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies). +* All rights reserved. +* This component and the accompanying materials are made available +* under the terms of the License "Eclipse Public License v1.0" +* which accompanies this distribution, and is available +* at the URL "http://www.eclipse.org/legal/epl-v10.html". +* +* Initial Contributors: +* Nokia Corporation - initial contribution. +* +* Contributors: +* +* Description: +* Note: This file may contain code to generate corrupt files for test purposes. +* Such code is excluded from production builds by use of compiler defines; +* it is recommended that such code should be removed if this code is ever published publicly. +* +*/ + + +/** + @file + @internalComponent + @released +*/ + + +#include "fieldroot.h" +#include "basefile.h" + + + +#include // for assert +#include "utility_interface.h" + + +CSISFieldRoot::TDbgFlag CSISFieldRoot::iDbgFlag (CSISFieldRoot::EDbgDefault); +CSISFieldRoot::THeadOpt CSISFieldRoot::iOptions (CSISFieldRoot::EOptDefault); +#ifdef GENERATE_ERRORS +CSISFieldRoot::TBug CSISFieldRoot::iBug (CSISFieldRoot::EBugDefault); +unsigned CSISFieldRoot::iBugStart (10); +unsigned CSISFieldRoot::iBugRepeat (10); +unsigned CSISFieldRoot::iBugRepeatCountdown (0); +#endif // GENERATE_ERRORS + + + +// 16-bit CRC calulation lookup table +static const WORD gCrcTab [256] = + {0x0000,0x1021,0x2042,0x3063,0x4084,0x50a5,0x60c6,0x70e7,0x8108,0x9129,0xa14a, + 0xb16b,0xc18c,0xd1ad,0xe1ce,0xf1ef,0x1231,0x0210,0x3273,0x2252,0x52b5,0x4294, + 0x72f7,0x62d6,0x9339,0x8318,0xb37b,0xa35a,0xd3bd,0xc39c,0xf3ff,0xe3de,0x2462, + 0x3443,0x0420,0x1401,0x64e6,0x74c7,0x44a4,0x5485,0xa56a,0xb54b,0x8528,0x9509, + 0xe5ee,0xf5cf,0xc5ac,0xd58d,0x3653,0x2672,0x1611,0x0630,0x76d7,0x66f6,0x5695, + 0x46b4,0xb75b,0xa77a,0x9719,0x8738,0xf7df,0xe7fe,0xd79d,0xc7bc,0x48c4,0x58e5, + 0x6886,0x78a7,0x0840,0x1861,0x2802,0x3823,0xc9cc,0xd9ed,0xe98e,0xf9af,0x8948, + 0x9969,0xa90a,0xb92b,0x5af5,0x4ad4,0x7ab7,0x6a96,0x1a71,0x0a50,0x3a33,0x2a12, + 0xdbfd,0xcbdc,0xfbbf,0xeb9e,0x9b79,0x8b58,0xbb3b,0xab1a,0x6ca6,0x7c87,0x4ce4, + 0x5cc5,0x2c22,0x3c03,0x0c60,0x1c41,0xedae,0xfd8f,0xcdec,0xddcd,0xad2a,0xbd0b, + 0x8d68,0x9d49,0x7e97,0x6eb6,0x5ed5,0x4ef4,0x3e13,0x2e32,0x1e51,0x0e70,0xff9f, + 0xefbe,0xdfdd,0xcffc,0xbf1b,0xaf3a,0x9f59,0x8f78,0x9188,0x81a9,0xb1ca,0xa1eb, + 0xd10c,0xc12d,0xf14e,0xe16f,0x1080,0x00a1,0x30c2,0x20e3,0x5004,0x4025,0x7046, + 0x6067,0x83b9,0x9398,0xa3fb,0xb3da,0xc33d,0xd31c,0xe37f,0xf35e,0x02b1,0x1290, + 0x22f3,0x32d2,0x4235,0x5214,0x6277,0x7256,0xb5ea,0xa5cb,0x95a8,0x8589,0xf56e, + 0xe54f,0xd52c,0xc50d,0x34e2,0x24c3,0x14a0,0x0481,0x7466,0x6447,0x5424,0x4405, + 0xa7db,0xb7fa,0x8799,0x97b8,0xe75f,0xf77e,0xc71d,0xd73c,0x26d3,0x36f2,0x0691, + 0x16b0,0x6657,0x7676,0x4615,0x5634,0xd94c,0xc96d,0xf90e,0xe92f,0x99c8,0x89e9, + 0xb98a,0xa9ab,0x5844,0x4865,0x7806,0x6827,0x18c0,0x08e1,0x3882,0x28a3,0xcb7d, + 0xdb5c,0xeb3f,0xfb1e,0x8bf9,0x9bd8,0xabbb,0xbb9a,0x4a75,0x5a54,0x6a37,0x7a16, + 0x0af1,0x1ad0,0x2ab3,0x3a92,0xfd2e,0xed0f,0xdd6c,0xcd4d,0xbdaa,0xad8b,0x9de8, + 0x8dc9,0x7c26,0x6c07,0x5c64,0x4c45,0x3ca2,0x2c83,0x1ce0,0x0cc1,0xef1f,0xff3e, + 0xcf5d,0xdf7c,0xaf9b,0xbfba,0x8fd9,0x9ff8,0x6e17,0x7e36,0x4e55,0x5e74,0x2e93, + 0x3eb2,0x0ed1,0x1ef0 + }; + + +const TUint8 KByteAlignment = 4; + +CSISFieldRoot::CSISFieldRoot () + { + } + + +void CSISFieldRoot::DoPaddedCrc(TCRC& aCRC, const TUint8* aData, const unsigned aLen) + { + // calculate CRC of the data as normal + CSISFieldRoot::DoTheCrc(aCRC, aData, aLen); + + // do CRC of the padding + CSISFieldRoot::PaddingCrc(aCRC, aLen); + } + +void CSISFieldRoot::PaddingCrc(TCRC& aCRC, const unsigned aLength) + { + // calculate the CRC of any required padding bytes + TUint8 padding[KByteAlignment] = { 0, 0, 0, 0}; + CSISFieldRoot::DoTheCrc(aCRC, padding, (KByteAlignment - (aLength % KByteAlignment)) & 0x03); + } + +void CSISFieldRoot::DoTheCrc (TCRC& aCRC, const TUint8* aData, const unsigned aLen) + { + +// There are several flavours of CRC16. This function calculates the CRC using the ZModem CRC-16 +// The parameters used to describe the ZModem CRC16 are: +// Poly: 1021 +// Initial Value: 0000 +// Reflected Input: No +// Reflected Output: No +// XorOutput: 0000 + + /* + + This is a test vector "123456789" which returns CRC of 0x31c3 + + TUint8 test[] = { 0x31, 0x32, 0x33, 0x34, 0x35,0x36, 0x37, 0x38, 0x39 }; + unsigned length = 9; + for (const TUint8 *ptrdata = test; ptrdata != test + length; ptrdata++) + aCRC = (aCRC << 8) ^ gCrcTab[((aCRC >> 8) ^ *ptrdata) & 0xff]; + */ + + /* USEFUL CRC DEBUGGING TRICK + FILE* ptr = NULL; + ptr = fopen("c:\\crc.dat","ab"); + fwrite(aData, 1, aLen, ptr); + fclose(ptr); + */ + assert (! IsBadReadPtr (aData, aLen)); + + for (const TUint8 *ptrdata = aData; ptrdata != aData + aLen; ptrdata++) + { + aCRC = (aCRC << 8) ^ gCrcTab[((aCRC >> 8) ^ *ptrdata) & 0xff]; + } + } + + +TSISStream& operator >> (TSISStream& aFile, CSISFieldRoot::TFieldType& aType) + { + TUint32 value; + aFile >> value; + aType = static_cast (value); + return aFile; + } + +TSISStream& operator << (TSISStream& aFile, const CSISFieldRoot::TFieldType aType) + { + TUint32 value (static_cast (aType)); + aFile << value; + return aFile; + } + + + + + + +CSISFieldRoot::~CSISFieldRoot () + { + } + + +TCRC CSISFieldRoot::Crc (const bool aIsArrayElement) const + { + TCRC crc (0); + CalculateCrc (crc, aIsArrayElement); + return crc; + } + +#ifdef GENERATE_ERRORS +void CSISFieldRoot::AddRawDataValue (TSISStream& aFile,const unsigned aLength) + { + for(int i=0 ; i < aLength ;i++) + { + aFile << (TUint8) rand(); + } + } +#endif // GENERATE_ERRORS + +#ifdef GENERATE_ERRORS +bool CSISFieldRoot::IsBugToBeCreated (const TBug aBug) + { + if (IsBugSet (aBug)) + { + if (iBugStart > 0) + { + return (--iBugStart == 0); + } + if (--iBugRepeatCountdown == 0) + { + iBugRepeatCountdown = iBugRepeat; + return true; + } + } + return false; + } +#endif // GENERATE_ERRORS