author | hgs |
Thu, 08 Jul 2010 15:21:49 +0530 | |
changeset 39 | 45fd446095e6 |
parent 0 | af10295192d8 |
permissions | -rw-r--r-- |
0
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// Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies). |
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// All rights reserved. |
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// This component and the accompanying materials are made available |
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// under the terms of "Eclipse Public License v1.0" |
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// which accompanies this distribution, and is available |
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// at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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// |
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// Initial Contributors: |
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// Nokia Corporation - initial contribution. |
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// |
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// Contributors: |
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// |
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// Description: |
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// |
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#include <e32base.h> |
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#include <es_sock.h> // for BigEndian |
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#include "dumper.h" |
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_LIT(KUnixTimeBaseDes, "19700101:"); |
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//1st phase of construction |
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CPktLogger::CPktLogger():iTimeOrigin(KUnixTimeBaseDes) |
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{ |
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} |
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void CPktLogger::ConstructL() |
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/** |
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2nd stage construction of packet logger. |
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Leaves with an error if the logging file could not be created. |
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*/ |
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{ |
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User::LeaveIfError(iFileSvrSession.Connect()); |
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_LIT(KHookDumpFile, "C:\\logs\\HookLogs\\iphookslog.tcpdump"); |
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TInt err = iFileObj.Open( iFileSvrSession, KHookDumpFile, EFileWrite|EFileShareAny ); |
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if ( err != KErrNone ) |
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{ |
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err = iFileObj.Create( iFileSvrSession, KHookDumpFile, EFileWrite|EFileShareAny ); |
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if( err != KErrNone ) |
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{ |
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// We aren't going to do any logging, so close down the File Server session. |
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iFileSvrSession.Close(); |
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User::Leave(err); |
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} |
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} |
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DumpFileHeader(); |
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} |
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CPktLogger::~CPktLogger() |
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{ |
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iFileObj.Close(); |
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iFileSvrSession.Close(); |
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} |
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CPktLogger* CPktLogger::NewL() |
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{ |
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CPktLogger* loggerObj = new( ELeave ) CPktLogger; |
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CleanupStack::PushL( loggerObj ); //A might-leave operation is to be followed - so give a chance to the system to do the cleanup for you. |
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loggerObj->ConstructL(); |
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CleanupStack::Pop(); //loggerObj |
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return loggerObj; |
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} |
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CPktLogger* CPktLogger::NewLC() |
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{ |
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CPktLogger* loggerObj = new( ELeave ) CPktLogger; |
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CleanupStack::PushL( loggerObj ); //A might-leave operation is to be followed - so give a chance to the system to do the cleanup for you. |
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loggerObj->ConstructL(); |
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return loggerObj; |
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} |
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void CPktLogger::DumpFileHeader() |
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{ |
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TUint8 buffer[ KDumpFileHeaderMaxSizeAllowed ]; |
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TUint8* ptr = 0; |
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//Magic number = 4 bytes |
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ptr = (TUint8*)&KTcpDumpMagicNumber; |
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buffer[ 0 ] = ptr[ 0 ] ; |
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buffer[ 1 ] = ptr[ 1 ] ; |
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buffer[ 2 ] = ptr[ 2 ] ; |
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buffer[ 3 ] = ptr[ 3 ] ; |
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//Major version = 2 bytes |
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ptr = (TUint8*)&KMajorVersion; |
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buffer[ 4 ] = ptr[ 0 ] ; |
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buffer[ 5 ] = ptr[ 1 ] ; |
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//Minor version = 2 bytes |
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ptr = (TUint8*)&KMinorVersion; |
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buffer[ 6 ] = ptr[ 0 ] ; |
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buffer[ 7 ] = ptr[ 1 ] ; |
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//Time Zone = 4 bytes |
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ptr = (TUint8*)&KThisZone; |
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buffer[ 8 ] = ptr[ 0 ] ; |
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buffer[ 9 ] = ptr[ 1 ] ; |
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buffer[ 10 ] = ptr[ 2 ] ; |
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buffer[ 11 ] = ptr[ 3 ] ; |
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//File Length/ sigfigs?? = 4 bytes |
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ptr = (TUint8*)&KSigfgs; |
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buffer[ 12 ] = ptr[ 0 ] ; |
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buffer[ 13 ] = ptr[ 1 ] ; |
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buffer[ 14 ] = ptr[ 2 ] ; |
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buffer[ 15 ] = ptr[ 3 ] ; |
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110 |
|
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//snaplen = 4 bytes |
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ptr = (TUint8*)&KSnapLen; |
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buffer[ 16 ] = ptr[ 0 ] ; |
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buffer[ 17 ] = ptr[ 1 ] ; |
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buffer[ 18 ] = ptr[ 2 ] ; |
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buffer[ 19 ] = ptr[ 3 ] ; |
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117 |
|
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// linktype = 4 bytes |
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ptr = (TUint8*)&KLinkType; |
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buffer[ 20 ] = ptr[ 0 ] ; |
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buffer[ 21 ] = ptr[ 1 ] ; |
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buffer[ 22 ] = ptr[ 2 ] ; |
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buffer[ 23 ] = ptr[ 3 ] ; |
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124 |
|
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TPtr8 fileHdr( buffer, KDumpFileHeaderMaxSizeAllowed, KDumpFileHeaderMaxSizeAllowed ); |
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126 |
|
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iFileObj.Write( fileHdr ); |
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} |
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129 |
|
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void CPktLogger::DumpLibPCapRecordHeader( TUint32 aPktLenCaptured, TUint32 aActualPktLen ) |
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131 |
{ |
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132 |
|
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union tag |
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{ |
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TUint8 pktHdrBuffer[ KDumpFileRecordHeaderMaxSizeAllowed ]; |
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TUint32 iDummyByte; // To force alignment on 4-bytes boundary - imp on arm but not on x86! |
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} buffer; |
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138 |
|
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TUint8* ptr = NULL; |
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|
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TTime timeNow; |
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timeNow.UniversalTime(); |
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TTimeIntervalSeconds sec; |
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timeNow.SecondsFrom(iTimeOrigin, sec); |
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LittleEndian::Put32(&buffer.pktHdrBuffer[ 0 ], sec.Int()); |
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|
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TUint captureTimeMicroSecs; |
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captureTimeMicroSecs = I64LOW(timeNow.Int64()); |
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captureTimeMicroSecs = captureTimeMicroSecs % 1000000; // get microseconds component |
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LittleEndian::Put32(&buffer.pktHdrBuffer[ 4 ], captureTimeMicroSecs); |
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|
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//a 32-bit value giving the number of bytes of packet data that were captured; |
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ptr = ( ( TUint8* )( TAny* )&aPktLenCaptured ); |
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buffer.pktHdrBuffer[ 8 ] = ptr[ 0 ]; |
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buffer.pktHdrBuffer[ 9 ] = ptr[ 1 ]; |
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buffer.pktHdrBuffer[ 10 ] = ptr[ 2 ]; |
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buffer.pktHdrBuffer[ 11 ] = ptr[ 3 ]; |
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|
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//a 32-bit value giving the actual length of the packet, in bytes |
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//(which may be greater than the previous number, if you're not |
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//saving the entire packet). |
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ptr = ( ( TUint8* )( TAny* )&aActualPktLen ) ; |
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buffer.pktHdrBuffer[ 12 ] = ptr[ 0 ]; |
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buffer.pktHdrBuffer[ 13 ] = ptr[ 1 ]; |
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buffer.pktHdrBuffer[ 14 ] = ptr[ 2 ]; |
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buffer.pktHdrBuffer[ 15 ] = ptr[ 3 ]; |
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|
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TPtrC8 recordHdr(buffer.pktHdrBuffer, KDumpFileRecordHeaderMaxSizeAllowed); |
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|
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iFileObj.Write( recordHdr ); |
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return; |
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} |
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|
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void CPktLogger::DumpLibPCapRecordData( const TDesC8& aPacket ) |
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{ |
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iFileObj.Write( aPacket ); |
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} |