author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 11 May 2010 16:43:01 +0300 | |
branch | RCL_3 |
changeset 17 | 8f055b80aa5b |
parent 0 | b16258d2340f |
child 39 | c0c2f28ace9c |
permissions | -rw-r--r-- |
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// CHTTPFormEncoder.cpp |
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// Copyright (c) 2001-2009 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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// System includes |
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#include <chttpformencoder.h> // Class signature |
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#include <httperr.h> |
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// Local includes |
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const TInt KFormEncoderBufferIncrementSize = 256; |
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EXPORT_C CHTTPFormEncoder* CHTTPFormEncoder::NewL() |
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{ |
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CHTTPFormEncoder* self = new (ELeave) CHTTPFormEncoder(); |
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CleanupStack::PushL(self); |
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self->ConstructL(); |
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CleanupStack::Pop(self); |
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return self; |
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} |
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EXPORT_C CHTTPFormEncoder::~CHTTPFormEncoder() |
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{ |
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__ASSERT_DEBUG(iState != ESupplyingData,HTTPPanic::Panic(HTTPPanic::EHTTPFormDataUnreleased)); |
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delete iData; |
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} |
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CHTTPFormEncoder::CHTTPFormEncoder() |
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{} |
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void CHTTPFormEncoder::ConstructL() |
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{ |
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iData = HBufC8::NewL(KFormEncoderBufferIncrementSize); |
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} |
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TBool CHTTPFormEncoder::GetNextDataPart(TPtrC8& aDataPart) |
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{ |
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aDataPart.Set(*iData); |
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iState = ESupplyingData; |
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return ETrue; |
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} |
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void CHTTPFormEncoder::ReleaseData() |
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{ |
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iState = EDataReleased; |
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} |
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TInt CHTTPFormEncoder::OverallDataSize() |
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{ |
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iState = ESuppliedSize; |
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return iData->Size(); |
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} |
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TInt CHTTPFormEncoder::Reset() |
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{ |
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iState = EAllowAppendData; |
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return KErrNone; |
0
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} |
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EXPORT_C void CHTTPFormEncoder::AddFieldL(const TDesC8& aFieldName, const TDesC8& aFieldValue) |
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{ |
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__ASSERT_DEBUG(iState==EAllowAppendData, HTTPPanic::Panic(HTTPPanic::EHTTPFormSupplyingData)); |
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if (!aFieldName.Length()) |
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User::Leave(KErrArgument); |
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// The maximum size is if every single character would have to be encoded as its hex equivalent. |
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// That is %HH. Also need to add room for the '=' and '&' field separator |
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TInt reqSize = (aFieldName.Length() + aFieldValue.Length())*3 +2; |
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if (!iData) |
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iData = HBufC8::NewL(reqSize); |
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else |
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{ |
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TInt currentLength = iData->Length(); |
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if (reqSize + currentLength > iData->Des().MaxLength()) |
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{ |
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TInt amountToGrow = reqSize < KFormEncoderBufferIncrementSize? KFormEncoderBufferIncrementSize : reqSize; |
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iData = iData->ReAllocL(amountToGrow+currentLength); |
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} |
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} |
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if (iData->Length() >0) |
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iData->Des().Append('&'); |
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AppendData(aFieldName); |
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iData->Des().Append('='); |
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AppendData(aFieldValue); |
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} |
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TBool CHTTPFormEncoder::IsAlphaNumeric(TUint8 aChar) |
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108 |
{ |
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return (aChar >= 'a' && aChar <= 'z') || |
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(aChar >= 'A' && aChar <= 'Z') || |
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(aChar >= '0' && aChar <='9'); |
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} |
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114 |
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/** Appends a non alpha numeric character by converting it to %HH where HH is the Hexadecmial representation |
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of the character |
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*/ |
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void CHTTPFormEncoder::AppendSpecialChar(TUint8 aChar) |
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{ |
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TPtr8 dataPtr = iData->Des(); |
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dataPtr.Append('%'); |
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122 |
|
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TUint hexChar = aChar/16; |
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hexChar = hexChar > 9 ? hexChar + 55 : hexChar + 48; |
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dataPtr.Append(hexChar); |
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126 |
|
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hexChar= aChar%16; |
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hexChar = hexChar > 9 ? hexChar + 55 : hexChar + 48; |
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dataPtr.Append(hexChar); |
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} |
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131 |
|
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void CHTTPFormEncoder::AppendData(const TDesC8& aData) |
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133 |
{ |
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TBool hadCR = EFalse; |
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TInt length = aData.Length(); |
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for (TInt ii=0; ii<length; ++ii) |
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137 |
{ |
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TPtr8 dataPtr = iData->Des(); |
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TUint8 charToProcess = aData[ii]; |
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140 |
|
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if (charToProcess == 0x0d) // turn CR into CR/LF |
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142 |
{ |
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hadCR = ETrue; |
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AppendSpecialChar(charToProcess); |
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AppendSpecialChar(0x0a); |
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continue; |
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} |
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148 |
|
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if (hadCR) |
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150 |
{ |
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hadCR = EFalse; |
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if (charToProcess == 0x0a) // LF after a CR, so skip as already appended |
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continue; |
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} |
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|
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// handle spaces -> become + |
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if (charToProcess == ' ') |
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dataPtr.Append('+'); |
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// handle normal character |
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else if (IsAlphaNumeric(charToProcess)) |
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dataPtr.Append((TChar)charToProcess); |
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else |
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AppendSpecialChar(charToProcess); // encode to %HH |
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// |
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} |
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} |