email/imap4mtm/imapprotocolcontroller/inc/cimapopfetchbody.h
changeset 0 72b543305e3a
child 77 da6ac9d688df
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/email/imap4mtm/imapprotocolcontroller/inc/cimapopfetchbody.h	Thu Dec 17 08:44:11 2009 +0200
@@ -0,0 +1,220 @@
+// Copyright (c) 2006-2009 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:
+//
+
+#ifndef __CIMAPOPFETCHBODY_H__
+#define __CIMAPOPFETCHBODY_H__
+
+#include <e32std.h>
+#include <msvstd.h>
+#include "cimapoperation.h"
+#include "cimapbodystructure.h" // for RAttributeValuePairList
+#include "cimapenvelope.h"		// for RArrayTAddress
+#ifndef SYMBIAN_ENABLE_SPLIT_HEADERS  
+#include <miuthdr.h>
+#include <miutconv.h>
+#endif
+
+class CImapSession;
+class CImapFolder;
+class CMsgActive;
+class CMsvServerEntry;
+class TImImap4GetPartialMailInfo;
+class CImapSettings;
+class CImConvertHeader;
+class CImapFetchResponse;
+class CImapFetchBodyResponse;
+class CImapRfc822HeaderFields;
+class CFetchBodyInfo;
+class CImapUtils;
+class CCnvCharacterSetConverter;
+class CImConvertCharconv;
+class CImConvertHeader;
+class CImCaf;
+class CImapMailStore;
+class CImapSyncManager;
+
+
+/**
+The CImapOpFetchBody class encapsulates fetching of body data from the remote
+server to the local mirror. It is used when performing requested copy/move to
+local or populate operations.
+
+It is responsible for building the structure of the message in the messaging
+store, according to the BODYSTRUCTURE returned by the remote server. The
+BODYSTRUCTURE is requested, along with other message header parts, when first
+populating a message.
+
+From this structure (or during the construction of it), this class also
+determines which parts of the message are to be fetched according to account
+settings, or in the case of populate operations, the passed parameters.
+
+For each body part to be fetched, a CFetchBodyInfo object is constructed and
+populated with the information required by the CImapSession and CImapMailStore
+to fetch and store the body part in the local mailstore. Once parsing of the
+bodystructure is complete, each part is fetched in turn via the CImapSession.
+
+Once a part has been fetched, this class is responsible for updating the 
+appropriate message flags indicating local message completeness.
+
+@internalTechnology
+@prototype
+*/
+class CImapOpFetchBody : public CImapOperation
+	{
+public:
+	typedef RArray<TPtrC8> RArrayTPtrC8;
+	
+	virtual ~CImapOpFetchBody();
+
+	static CImapOpFetchBody* NewL(CImapSession*& aSession, CImapSyncManager& aSyncManager, CMsvServerEntry& aEntry, CImapSettings& aImapSettings, CImapMailStore& aMailStore);
+	void FetchBodyL(TRequestStatus& aRequestStatus, const TMsvId aPart, const TImImap4GetPartialMailInfo& aGetPartialMailInfo);
+	void Progress(TImap4GenericProgress& aGenericProgress);
+	void CancelEnableResume();
+	
+private:
+	CImapOpFetchBody(CImapSession*& aSession, CImapSyncManager& aSyncManager, CMsvServerEntry& aEntry, CImapSettings& aImapSettings, CImapMailStore& aMailStore);
+	void ConstructL();
+	
+	// fetch initialisation
+	void DoFetchL();
+	void CheckForPartialPopulate();
+	void FetchLargeHeaderL();
+
+	// methods for constructing an array of items to fetch	
+	void DoBuildFetchListL();
+	void AddFetchItemL(CImMimeHeader& aMimeHeader, TMsvEmailEntry& aMessage, TBool aIsText, TInt32 aSizeToFetch);
+	void AddFilterFetchItemL(CImMimeHeader& aMimeHeader, TMsvEmailEntry& aEntry, TImap4GetMailOptions& aPartTypes);
+	void AddFilterFetchItemL(CImMimeHeader& aMimeHeader, TMsvEmailEntry& aEntry, TImImap4GetPartialMailInfo& aGetPartialMailInfo);
+	void BuildFetchListL(TMsvId aPart);
+	void RemoveHtmlPart(TMsvId aPart);
+
+	TInt32 Minimum(TInt32 aThisPartTypeSizeLimit, TInt32 aTotalMailSizeLimit);
+
+	// Requsts a specified item to be fetched.	
+	TBool FetchPartL();
+	
+	// Registers an application part with the CAF framework
+	void  RegisterWithCafL(CFetchBodyInfo& fetchInfo);
+	
+	// Header and bodystructure parsing
+	TBool ProcessBodyStructureL();
+	void PopulateImHeaderL(CImapRfc822HeaderFields& aHeaderFields, TMsvEmailEntry& aEntry, CImHeader& imHeader);
+	void BuildTreeL(TMsvId aParent, CImapBodyStructure* aBodyStructure, const TDesC8& aPath, const TMsvId aThisMessage, TInt& aAttachments, TBool& aIsMHTML, TInt& aRelatedAttachments);
+	void BuildContentEntryL(const TMsvId aParent, CImapBodyStructure* aBodyStructure, const TDesC8& aPath, const TMsvId aThisMessage, TInt& aAttachments, TBool& aIsMHTML, TInt& aRelatedAttachments);
+	void ProcessTextSubtypeL(CImapBodyStructure* aBodyStructure, CImMimeHeader& aMime, TMsvEmailEntry& aMessage, TBool& aIsMHTML);
+	void ProcessParameterListL(const CImapBodyStructure::RAttributeValuePairList& aParamList, CImMimeHeader& aMime, TMsvEmailEntry& aMessage, TFileName& aAttachmentFilename);
+	void ProcessExtendedFieldsL(CImapBodyStructure* aBodyStructure, CImMimeHeader& aMime, TMsvEmailEntry& aMessage, TFileName& aAttachmentFilename);
+	void BuildEmbeddedMessageL(CImapBodyStructure* aBodyStructure, CImMimeHeader& aMime, TMsvEmailEntry& aMessage, const TDesC8& aPath, TInt& aAttachments);
+	void BuildNonMessageEntryL(const TMsvId& aParent, CImMimeHeader& aMime, TMsvEmailEntry& aMessage, TInt& aAttachments, TInt& aRelatedAttachments);
+
+	void ProcessEnvelopeL(CImHeader* aHeader, TMsvEntry& aEntry, CImapEnvelope& aImapEnvelope);
+	void GetDefaultFilenameL(TDes& aName, const TMsvEmailEntry& aMessage, const CImMimeHeader* mime);
+	void ProcessAddressListL(CDesCArray& aWhere, const CImapEnvelope::RArrayTAddress& aAddressArray);
+	void ProcessAddressListL(CDesCArray& aWhere, const TDesC8& aAddresses);
+	TInt FindFilenameL(const CImMimeHeader& aMimeInfo, TPtrC8& aFilename);
+	void FindFilenameDecodeL(const CImMimeHeader& aMimeInfo, TFileName& aFileName);
+	void StripIllegalCharactersFromFileName(TDes16& aName);
+	void CreateAttachmentInfoL(const TMsvEntry& aMsvEmailEntry);
+
+	void StoreHeadersL(CImHeader* aImHeader, CImMimeHeader* aMimeHeader);
+	void UpdateBodyTextRemainingSizeForHtml();
+	
+	static TPtrC8 StripAngledBrackets(const TDesC8& aString);
+	
+	// Post BodyPart-fetch processing
+	void FetchPartCompleteL();
+	void PropagateCompleteFlagL(TMsvId aId, TBool aDoBodyText, TBool aPartialFetched);
+	
+	// Server Error handling
+	TInt ProcessServerError();
+
+	// from CMsgActive
+	virtual void DoRunL();
+	void DoComplete(TInt& aErr);
+	void DoCancel();
+	
+	void ClearFetchAttemptedL();
+
+private:
+	// These steps are those that need to be performed to fetch all, or part of a message.
+	// The iNextStep data member is set when asynchronous calls are made to indicate the
+	// next step that is to be performed on completion of the service request.
+	enum TFetchSteps
+		{
+		EFinished,
+		EGetBodyStructure,
+		EProcessBodyStructure,
+		EBuildFetchList,
+		EFetchFirstPart,
+		EFetchNext
+		};
+
+	// Referenced components
+	CImapSyncManager& iSyncManager;	
+	CImapSettings& iImapSettings;
+	CImapMailStore& iMailStore;
+	
+	// State Machine Progress:
+	TInt iNextStep;
+	TInt iCurrentStep;
+	
+	// Stored fetch parameters.
+	TImImap4GetPartialMailInfo iGetPartialMailInfo;
+	
+	// Requested message/message-part information
+	TMsvId iRequestedPart;
+	TUint  iMessageUid;
+	TMsvId iMessageMsvId;
+
+	// Header/bodystructure fetch response
+	CImapFetchResponse* iFetchResponse;
+
+	// Fetch body response information
+	CImapFetchBodyResponse* iFetchBodyResponse;
+
+	// Array of items to be fetched
+	RPointerArray<CFetchBodyInfo> iFetchList;
+	
+	// Stats
+	TInt  iPartsToDo;
+	TInt  iPartsDone;
+	TInt  iBytesToDo;
+	TInt  iBytesDone;
+	TBool iHasTextParts;
+
+	// used for calculating parts to fetch when limits are being used
+	TInt32 iBodyTextSize;
+	TInt32 iHtmlEntrySize;
+	TInt32 iSizeOfToBeFetchedAttachments;
+	TInt32 iBodyPartRemainingSize;
+	TMsvId iHtmlEntryPart; 
+	
+	// things to spot when processing the bodystructure
+	TBool iFetchPartialMail;
+	TBool iIsVCalendar;
+	TBool iIsICalendar;
+	TInt  iDecodedSizeOfAllParts;
+	TFileName iAttachmentName;
+	
+	// converter objects
+	CCnvCharacterSetConverter* iCharacterConverter;
+	CImConvertCharconv* iCharConv;
+	CImConvertHeader* iHeaderConverter;
+	
+	// CAF support
+	CImCaf* iCaf;
+	};
+
+#endif	//__CIMAPOPFETCHBODY_H__