diff -r 000000000000 -r bde4ae8d615e os/kernelhwsrv/kerneltest/e32test/misc/ymodem.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/os/kernelhwsrv/kerneltest/e32test/misc/ymodem.cpp Fri Jun 15 03:10:57 2012 +0200 @@ -0,0 +1,238 @@ +// Copyright (c) 1998-2009 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: +// e32test\misc\ymodem.cpp +// +// + +#include +#include +#include "ymodem.h" + +//#include +//GLREF_D RTest test; + +const TInt KMaxRetries=10; + +static const TUint16 crcTab[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 + }; + +YModem::YModem(TBool aG) + { + iTimeout=2000000; + iPacketSize=0; + iInitChar=aG?BIGG:BIGC; + } + +void YModem::UpdateCrc(const TUint8* aPtr, TInt aLength) +// +// Perform a CCITT CRC checksum. +// + { + + register const TUint8* pB=aPtr; + register TUint16 crc=iCrc; + while (aLength--) + crc=TUint16((crc<<8)^crcTab[(crc>>8)^*pB++]); + iCrc=crc; + } + +TInt YModem::ReadPacket(TDes8& aDest) + { + TUint8* pD = (TUint8*)aDest.Ptr(); + TInt r; + TPtr8 d(pD, 0, 1); + r = ReadBlock(d); + if (r != KErrNone) + return r; + if (d.Length()==0) + return KErrZeroLengthPacket; + TUint8 b0 = *pD; + if (b0==CAN) + return KErrAbort; + if (b0==EOT) + return KErrEof; + if (b0==SOH) + iBlockSize=128; + else if (b0==STX) + iBlockSize=1024; + else + return KErrBadPacketType; + iTimeout=5000000; + iPacketSize = iBlockSize+5; + d.Set(pD+1, 0, iPacketSize-1); + r = ReadBlock(d); + if (r!=KErrNone && r!=KErrTimedOut) + return r; + if (d.Length() < iPacketSize-1) + return KErrPacketTooShort; + TUint8 seq = pD[1]; + TUint8 seqbar = pD[2]; + seqbar^=seq; + if (seqbar != 0xff) + return KErrCorruptSequenceNumber; + if (seq==iSeqNum) + return KErrAlreadyExists; + else + { + TUint8 nextseq=(TUint8)(iSeqNum+1); + if (seq!=nextseq) + return KErrWrongSequenceNumber; + } + iCrc=0; + UpdateCrc(pD+3, iBlockSize); + aDest.SetLength(iPacketSize); + TUint16 rx_crc = (TUint16)((pD[iPacketSize-2]<<8) | pD[iPacketSize-1]); + if (rx_crc != iCrc) + return KErrBadCrc; + ++iSeqNum; + return KErrNone; + } + +TInt YModem::CheckPacket(TUint8* aDest) + { + const TUint8* p=iPacketBuf.Ptr()+3; + if (iState>0) + memcpy(aDest, p, iBlockSize); + else + { + // parse packet 0 + TPtrC8 nameptr(p); + TInt nLen=nameptr.Length(); + if (nLen==0) + return KErrSessionClosed; // batch termination packet + iFileName.Copy(nameptr.Left(Min(nLen,iFileName.MaxLength()))); + p+=nLen+1; + iFileSize=0; + for (;;) + { + TUint c=*p++; + if (c<'0' || c>'9') + break; + iFileSize*=10; + iFileSize+=c-'0'; + } +// test.Printf(_L("File %S, size %d\n"),&iFileName,iFileSize); + } + return KErrNone; + } + +TInt YModem::ReadPackets(TUint8*& aDest, TInt aLength) + { + TInt l=0; + TInt r=KErrNone; + while(l1) + aDest+=iBlockSize; // don't store packet 0 + if (iInitChar==BIGC) + WriteC(ACK); + if (iState==1) + WriteC(iInitChar); // Send another 'C' after ACK + if (r==KErrAlreadyExists) + continue; + break; + } + if (r==KErrAbort) + break; + if (iInitChar==BIGG) + break; + WriteC(NAK); + } + if (r==KErrNone) + { + if (iState>1) + l+=iBlockSize; + } + else if (r==KErrSessionClosed) + { + if (iInitChar==BIGC) + WriteC(ACK); + break; + } + else if (r==KErrEof) + { + WriteC(ACK); // acknowledge end + break; + } + else if (r!=KErrAbort) + { + WriteC(CAN); + WriteC(CAN); + WriteC(CAN); + WriteC(CAN); + WriteC(CAN); + break; + } + } + return r; + } + +TInt YModem::StartDownload(TBool aG, TInt& aLength, TDes& aName) + { + TInt r; + iInitChar=aG?BIGG:BIGC; + iState=0; + iSeqNum=255; + TUint8* dummy=NULL; + r=ReadPackets(dummy, 0); // read the file description packet + if (r==KErrNone) + { + aLength=iFileSize; // return file name and file size + aName=iFileName; + } + return r; + } +