--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/applayerpluginsandutils/httpprotocolplugins/httpheadercodec/chttpheaderreader.cpp	Tue Feb 02 01:09:52 2010 +0200
@@ -0,0 +1,288 @@
+// Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of "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:
+//
+
+#include "chttpheaderreader.h"
+
+#include <inetprottextutils.h>
+#include <tinternetdate.h>
+#include <http/rhttpsession.h>
+#include "CHeaderField.h"
+
+
+CHttpHeaderReader::CHttpHeaderReader(RStringPool aStrPool)
+	: iStrPool(aStrPool), iStringTable(RHTTPSession::GetTable())
+	{
+	}
+
+/** Generic Decoding function that splits headers into parts on a character separator */
+void CHttpHeaderReader::DecodeGenericL(RHeaderField& aHeader, const TDesC8& aSeparator) const
+	{
+	TPtrC8 rawData;
+	aHeader.RawDataL(rawData);
+	TInt remaining = rawData.Length();
+	TPtrC8 token;
+	TInt tokensFound =0;
+	while (remaining > 0)
+		{
+		remaining -= InetProtTextUtils::ExtractNextTokenFromList(rawData, token, aSeparator);
+		SetNewFStringPartL(aHeader, tokensFound, token);
+		++tokensFound;
+		if(remaining > 0)
+			{
+			remaining -= InetProtTextUtils::ExtractNextTokenFromList(rawData, token, aSeparator);
+			SetNewFStringPartL(aHeader, tokensFound, token);
+			++tokensFound;
+			}
+		}
+	}
+
+// Helper to DoUserAgentL(), etc., which take token lists with arbitrary separators
+void CHttpHeaderReader::DecodeTokenListHeaderL(RHeaderField& aHeader, const TDesC8& aSep) const
+	{
+	TPtrC8 rawData;
+	TPtrC8 token;
+
+	aHeader.RawDataL(rawData);
+
+	TUint remaining = rawData.Length();
+	TInt tokensFound=0;
+	while (remaining > 0)
+		{
+		remaining -= InetProtTextUtils::ExtractNextTokenFromList(rawData, token, aSep);
+		InetProtTextUtils::RemoveWhiteSpace(token, InetProtTextUtils::ERemoveBoth);
+		SetNewFStringPartL(aHeader, tokensFound, token);
+		tokensFound++;
+		if(remaining > 0)
+			{
+			remaining -= InetProtTextUtils::ExtractNextTokenFromList(rawData, token, aSep);
+			InetProtTextUtils::RemoveWhiteSpace(token, InetProtTextUtils::ERemoveBoth);
+			SetNewFStringPartL(aHeader, tokensFound, token);
+			tokensFound++;
+			}
+		}
+	}
+
+void CHttpHeaderReader::DecodeGenericNumberL(RHeaderField& aHeader) const
+	{
+	TPtrC8 buffer;
+	aHeader.RawDataL(buffer);
+	TInt number = KErrNotFound;
+	
+	TInt decimalPos = buffer.Locate('.');
+	if(decimalPos == 0)
+		{
+		// first character is decimal. So, set the value as zero.
+		SetNewIntegerPartL(aHeader, 0, 0);
+		}
+	else
+	   	{
+		// Search for '\n' separator. In the case when a duplicate header has been received,
+		// only use the fist instance of the valid data.
+		TInt newLinePos = buffer.Locate('\n');
+		if (newLinePos != KErrNotFound)
+			{
+			buffer.Set(buffer.Left(newLinePos));
+			}
+		
+		TInt value = KErrNotFound;
+		TInt ret = InetProtTextUtils::ConvertDescriptorToInt(buffer, value);
+		if ( ret > KErrNone ) 
+			{
+			// Extract an integer.  Do not permit terminators other than WS or EOL.
+			InetProtTextUtils::ExtractIntegerValueL(buffer, number, EFalse);	
+			}
+		SetNewIntegerPartL(aHeader, 0, number); // part 0, i.e. the first (and only) part
+	   	}
+	}
+
+CHeaderFieldPart* CHttpHeaderReader::SetNewIntegerPartL(RHeaderField& aHeader, TInt aPartIndex, TInt aValue) const
+	{
+	THTTPHdrVal partVal(aValue);
+	CHeaderFieldPart* part = SetNewPartL(aHeader, aPartIndex, partVal);
+	return part;
+	}
+
+CHeaderFieldPart* CHttpHeaderReader::SetNewDatePartL(RHeaderField& aHeader, TInt aPartIndex, TDateTime& aDate) const
+	{
+	THTTPHdrVal partVal(aDate);
+	CHeaderFieldPart* part = SetNewPartL(aHeader, aPartIndex, partVal);
+	return part;
+	}
+
+CHeaderFieldPart* CHttpHeaderReader::SetNewFStringPartL(RHeaderField& aHeader, TInt aPartIndex, TPtrC8 aValue) const
+	{
+	RStringF partStr = iStrPool.OpenFStringL(aValue);
+	CleanupClosePushL(partStr);
+	THTTPHdrVal partVal(partStr);
+	CHeaderFieldPart* part = SetNewPartL(aHeader, aPartIndex, partVal);
+	CleanupStack::PopAndDestroy(&partStr);
+	return part;
+	}
+CHeaderFieldPart* CHttpHeaderReader::SetNewStringPartL(RHeaderField& aHeader, TInt aPartIndex, TPtrC8 aValue) const
+	{
+	RString partStr = iStrPool.OpenStringL(aValue);
+	CleanupClosePushL(partStr);
+	THTTPHdrVal partVal(partStr);
+	CHeaderFieldPart* part = SetNewPartL(aHeader, aPartIndex, partVal);
+	CleanupStack::PopAndDestroy(&partStr);
+	return part;
+	}
+
+CHeaderFieldPart* CHttpHeaderReader::SetNewPartL(RHeaderField& aHeader, TInt aPartIndex, THTTPHdrVal& aPartVal) const
+	{
+	CHeaderFieldPart* part = CHeaderFieldPart::NewL(aPartVal);
+	CleanupStack::PushL(part);
+	aHeader.SetPartL(part, aPartIndex);
+	CleanupStack::Pop(part);
+	return part;
+	}
+	
+void CHttpHeaderReader::SetParamNameAndValueL(CHeaderFieldPart& aHeaderPart, const TDesC8& aParam, TBool aQuotedValueAllowed) const
+ 	{
+	// Extract the name and value of the parameter. 
+	TPtrC8 paramName;
+	TPtrC8 paramValue;
+
+	TInt equalPos = aParam.Locate('=');
+	if (equalPos == KErrNotFound)
+		{
+		// If there is no value then set an empty parameter
+		paramName.Set(aParam);
+		paramValue.Set(KNullDesC8);
+		}
+	else
+		{
+		paramName.Set(aParam.Left(equalPos));
+		InetProtTextUtils::RemoveWhiteSpace(paramName, InetProtTextUtils::ERemoveBoth);		
+		paramValue.Set(aParam.Right(aParam.Length() - (equalPos+1)));
+		InetProtTextUtils::RemoveWhiteSpace(paramValue, InetProtTextUtils::ERemoveBoth);		
+		}
+
+	TPtrC8 unquotedParamValue;
+	if (aQuotedValueAllowed && paramValue.Length() > 0 && paramValue[0] == '"')
+		{
+		InetProtTextUtils::ExtractQuotedStringL(paramValue, unquotedParamValue);
+		}				
+	else
+		{
+		unquotedParamValue.Set(paramValue);
+		}
+ 
+ 
+	SetNewFStringParamL(aHeaderPart, paramName, unquotedParamValue);
+	}
+
+CHeaderFieldParam* CHttpHeaderReader::SetNewFStringParamL(CHeaderFieldPart& aHeaderPart, TPtrC8 aParamName, TPtrC8 aParamValue) const
+	{
+	RStringF paramNameStr = iStrPool.OpenFStringL(aParamName);
+	CleanupClosePushL(paramNameStr);
+	RStringF paramValStr = iStrPool.OpenFStringL(aParamValue);
+	CleanupClosePushL(paramValStr);
+	THTTPHdrVal paramVal(paramValStr);
+	CHeaderFieldParam* param = CHeaderFieldParam::NewL(paramNameStr, paramVal);
+	CleanupStack::PushL(param);
+	aHeaderPart.AddParamL(param);
+	CleanupStack::Pop(param);
+	CleanupStack::PopAndDestroy(2, &paramNameStr); // and paramValStr
+	return param;
+	}
+
+
+CHeaderFieldParam* CHttpHeaderReader::SetNewStringParamL(CHeaderFieldPart& aHeaderPart, TPtrC8 aParamName, TPtrC8 aParamValue) const
+	{
+	RStringF paramNameStr = iStrPool.OpenFStringL(aParamName);
+	CleanupClosePushL(paramNameStr);
+	RString paramValStr = iStrPool.OpenStringL(aParamValue);
+	CleanupClosePushL(paramValStr);
+	THTTPHdrVal paramVal(paramValStr);
+	CHeaderFieldParam* param = CHeaderFieldParam::NewL(paramNameStr, paramVal);
+	CleanupStack::PushL(param);
+	aHeaderPart.AddParamL(param);
+	CleanupStack::Pop(param);
+	CleanupStack::PopAndDestroy(2, &paramNameStr); // and paramValStr
+	return param;
+	}
+
+CHeaderFieldParam* CHttpHeaderReader::SetNewIntegerParamL(CHeaderFieldPart& aHeaderPart, TPtrC8 aParamName, TPtrC8 aParamValue) const
+    {
+	RStringF paramNameStr = iStrPool.OpenFStringL(aParamName);
+	CleanupClosePushL(paramNameStr);
+	TInt intParamVal;
+	InetProtTextUtils::ConvertDescriptorToInt(aParamValue, intParamVal);
+	THTTPHdrVal paramVal(intParamVal);
+	CHeaderFieldParam* param = CHeaderFieldParam::NewL(paramNameStr, paramVal);
+	CleanupStack::PushL(param);
+	aHeaderPart.AddParamL(param);
+	CleanupStack::Pop(param);
+	CleanupStack::PopAndDestroy(&paramNameStr);
+	return param;
+   } 
+
+void CHttpHeaderReader::DecodeDateL(RHeaderField& aHeader) const
+	{
+	// RFC2616, section 14.18
+	// Date  = "Date" ":" HTTP-date
+	//
+	// An example is
+	// Date: Tue, 15 Nov 1994 08:12:31 GMT
+
+	TPtrC8 buffer;
+	aHeader.RawDataL(buffer);
+	
+    // Search for '\n' separator. In the case when a duplicate header has been received,
+	// only use the fist instance of the valid data.
+	TInt newLinePos = buffer.Locate('\n');
+	if (newLinePos != KErrNotFound)
+		{
+		buffer.Set(buffer.Left(newLinePos));
+		}
+		
+	TInternetDate date;
+	date.SetDateL(buffer);
+	TDateTime dateTime = date.DateTime();
+	SetNewDatePartL(aHeader, 0, dateTime); // part 0, i.e. the first (and only) part
+	}
+
+
+TInt CHttpHeaderReader::GetParamNameAndValueL(TPtrC8& aBuffer, TPtrC8& aName, TPtrC8& aValue, TInt aErrorCode) const
+	{
+	TInt bytesConsumed=0;
+			
+	TInt equalsPos = (aBuffer.Locate('=') );
+	if (equalsPos==KErrNotFound)
+		User::Leave(aErrorCode);
+
+	aName.Set(aBuffer.Left(equalsPos));
+	InetProtTextUtils::RemoveWhiteSpace(aName, InetProtTextUtils::ERemoveBoth);
+
+	TPtrC8 value(aBuffer.Mid(equalsPos+1));
+	InetProtTextUtils::RemoveWhiteSpace(value, InetProtTextUtils::ERemoveBoth);
+
+	// Obtain the parameter value. It is a string which
+	// may or may not be quoted. 
+	if (value.Length()==0)
+		User::Leave(aErrorCode);
+
+	if (value[0] == '"')
+		{
+		bytesConsumed += InetProtTextUtils::ExtractQuotedStringL(value, aValue);
+		}
+	else
+		{
+		aValue.Set(value);
+		}
+
+	return bytesConsumed;
+	}