author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 02 Feb 2010 01:04:58 +0200 | |
changeset 0 | 1bce908db942 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2006-2007 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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*/ |
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#include <es_sock.h> |
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#include "natfwunsafattribute.h" |
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#include "natfwunsafutils.h" |
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// ----------------------------------------------------------------------------- |
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// CNATFWUNSAFAttribute::CNATFWUNSAFAttribute |
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// ----------------------------------------------------------------------------- |
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// |
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CNATFWUNSAFAttribute::CNATFWUNSAFAttribute() |
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{ |
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} |
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// ----------------------------------------------------------------------------- |
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// CNATFWUNSAFAttribute::~CNATFWUNSAFAttribute |
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// ----------------------------------------------------------------------------- |
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// |
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CNATFWUNSAFAttribute::~CNATFWUNSAFAttribute() |
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{ |
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} |
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// ----------------------------------------------------------------------------- |
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// CNATFWUNSAFAttribute::EncodeL |
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// ----------------------------------------------------------------------------- |
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// |
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HBufC8* CNATFWUNSAFAttribute::EncodeL() const |
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{ |
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HBufC8* value = EncodeValueL(); |
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CleanupStack::PushL(value); |
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TInt attrValLength = value->Length(); |
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//Pad non-DWORD-boundary aligned attributes with spaces if needed. Spaces |
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//used instead of \0 in order to not mess up buggy C implementations. |
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const TInt KGranularity = 4; |
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TInt bytesInLastBlock = attrValLength % KGranularity; |
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TInt bytesToAppend = KGranularity - bytesInLastBlock; |
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if (0 < bytesInLastBlock && !IsWordBoundaryAligned(Type())) |
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{ |
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CBufBase* valueBuf = CBufFlat::NewL(attrValLength + bytesToAppend); |
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CleanupStack::PushL(valueBuf); |
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valueBuf->InsertL(0, *value, attrValLength); |
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const TChar KSpace(' '); |
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for (TInt i = 0; i < bytesToAppend; ++i) |
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{ |
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valueBuf->InsertL(valueBuf->Size(), &KSpace, 1); |
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} |
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// Store value pointer for proper cleanupstack handling |
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HBufC8* oldValue = value; |
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value = valueBuf->Ptr(0).AllocL(); |
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CleanupStack::PopAndDestroy(valueBuf); |
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CleanupStack::PopAndDestroy( oldValue ); |
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CleanupStack::PushL( value ); |
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} |
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HBufC8* attribute = HBufC8::NewLC(value->Length() + EValueOffset); |
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TPtr8 ptr = attribute->Des(); |
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ptr.FillZ(EValueOffset); |
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NATFWUNSAFUtils::WriteNetworkOrder16L(ptr, ETypeOffset, Type()); |
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NATFWUNSAFUtils::WriteNetworkOrder16L(ptr, |
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ELengthOffset, |
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static_cast<TUint16>(attrValLength)); |
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ptr.Append(*value); |
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CleanupStack::Pop(attribute); |
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CleanupStack::PopAndDestroy(value); |
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return attribute; |
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} |
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// ----------------------------------------------------------------------------- |
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// CNATFWUNSAFAttribute::ParseLengthL |
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// ----------------------------------------------------------------------------- |
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// |
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TUint16 CNATFWUNSAFAttribute::ParseLengthL(const TDesC8& aByteStream) |
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{ |
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__ASSERT_ALWAYS(aByteStream.Length() >= EValueOffset, |
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User::Leave(KErrArgument)); |
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return BigEndian::Get16(aByteStream.Mid(ELengthOffset).Ptr()); |
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} |
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// ----------------------------------------------------------------------------- |
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// CNATFWUNSAFAttribute::ParseTypeAndLengthL |
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// ----------------------------------------------------------------------------- |
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// |
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void CNATFWUNSAFAttribute::ParseTypeAndLengthL(const TDesC8& aByteStream, |
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TUint16& aType, |
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TUint16& aTotalLength) |
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{ |
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//Stream must have enough data to contain at least an attribute with |
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//zero-length value |
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__ASSERT_ALWAYS(aByteStream.Length() >= EValueOffset, |
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User::Leave(KErrArgument)); |
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113 |
|
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TUint16 totalLength = ParseLengthL(aByteStream) + EValueOffset; |
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115 |
|
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//Increase total length if it's not a multiple of 4 bytes. |
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//This is because of possible padding in text attributes not visible from |
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//attribute length field. |
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const TUint16 KGranularity = 4; |
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TUint16 bytesInLastBlock = totalLength % KGranularity; |
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TUint16 bytesPadded = KGranularity - bytesInLastBlock; |
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if (0 < bytesInLastBlock ) |
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{ |
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totalLength += bytesPadded; |
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} |
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126 |
|
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__ASSERT_ALWAYS(aByteStream.Length() >= totalLength, |
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User::Leave(KErrArgument)); |
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129 |
|
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aTotalLength = totalLength; |
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aType = BigEndian::Get16(aByteStream.Mid(ETypeOffset).Ptr()); |
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} |
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133 |
|
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// ----------------------------------------------------------------------------- |
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// CNATFWUNSAFAttribute::IsMandatory |
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// ----------------------------------------------------------------------------- |
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// |
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TBool CNATFWUNSAFAttribute::IsMandatory(TUint16 aType) |
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{ |
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const TInt KLargestMandatoryValue = 0x7fff; //RFC 3489 |
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return aType <= KLargestMandatoryValue; |
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} |
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143 |
|
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// ----------------------------------------------------------------------------- |
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// CNATFWUNSAFAttribute::IsWordBoundaryAligned |
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// ----------------------------------------------------------------------------- |
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// |
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TBool CNATFWUNSAFAttribute::IsWordBoundaryAligned(TUint16 aType) |
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{ |
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return !(aType == EUsername || |
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aType == EPassword || |
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aType == EData || |
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aType == EServer || |
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aType == ENonce || |
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aType == ERealm || |
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aType == EErrorCode); |
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} |