mmsengine/mmsmessage/inc/mmscliententry.h
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     1 /*
       
     2 * Copyright (c) 2004-2007 Nokia Corporation and/or its subsidiary(-ies).
       
     3 * All rights reserved.
       
     4 * This component and the accompanying materials are made available
       
     5 * under the terms of "Eclipse Public License v1.0"
       
     6 * which accompanies this distribution, and is available
       
     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     8 *
       
     9 * Initial Contributors:
       
    10 * Nokia Corporation - initial contribution.
       
    11 *
       
    12 * Contributors:
       
    13 *
       
    14 * Description:  
       
    15 *     Entry wrapper for client side components
       
    16 *
       
    17 */
       
    18 
       
    19 
       
    20 
       
    21 #ifndef MMSCLIENTENTRY_H
       
    22 #define MMSCLIENTENTRY_H
       
    23 
       
    24 //  INCLUDES
       
    25 #include "mmsentrywrapper.h"
       
    26 
       
    27 // CONSTANTS
       
    28 
       
    29 // MACROS
       
    30 
       
    31 // DATA TYPES
       
    32 
       
    33 // FUNCTION PROTOTYPES
       
    34 
       
    35 // FORWARD DECLARATIONS
       
    36 
       
    37 // CLASS DECLARATION
       
    38 
       
    39 /**
       
    40 * Entry wrapper implementing MMmsEntry for client side.
       
    41 * Hides difference between CMscEntry and CMsvServerEntry
       
    42 *
       
    43 * @lib mmsutil.lib
       
    44 * @since 3.0
       
    45 */
       
    46 class CMmsClientEntry :public CBase, public MMmsEntryWrapper
       
    47     {
       
    48     public:  // Constructors and destructor
       
    49         
       
    50         /**
       
    51         * Two-phased constructor.
       
    52         * @param aFs opened file system handle.
       
    53         * @param aEntry reference to a message entry (CMsvEntry),
       
    54         *     originally refers to the entry to be handled.
       
    55         * @param aServiceId TMsvId of MMS service entry.
       
    56         * @param aUseDrm is DRM handling needed. Default on client side is "No"
       
    57         */
       
    58         IMPORT_C static CMmsClientEntry* NewL( RFs& aFs,
       
    59             CMsvEntry& aEntry,
       
    60             TMsvId aServiceId);
       
    61         
       
    62         /**
       
    63         * Destructor.
       
    64         */
       
    65         virtual ~CMmsClientEntry();
       
    66 
       
    67     public: // New functions
       
    68         
       
    69     public: // Functions from base classes
       
    70 
       
    71         // From MMmsEntryWrapper:
       
    72 
       
    73         /**
       
    74         * Provide an edit store for editing messages
       
    75         * Ownership of the store is transferred. Caller must delete the store
       
    76         * @return CMsvStore* if successful, leaves if unsuccessful
       
    77         */
       
    78         CMsvStore* EditStoreL();
       
    79 
       
    80         /**
       
    81         * provide a read store for editing messages
       
    82         * Ownership of the store is transferred. Caller must delete the store
       
    83         * @return CMsvStore* if successful, leaves if unsuccessful
       
    84         */
       
    85         CMsvStore* ReadStoreL();
       
    86 
       
    87         /**
       
    88         * reads index entry contents from current entry
       
    89         * @param TMsvEntry reference to entry to be filled with data
       
    90         * @return error code, KErrNone if successful
       
    91         */
       
    92         TInt GetIndexEntry( TMsvEntry& aTMsvEntry );
       
    93        
       
    94         /**
       
    95         * stores index entry contents to current entry
       
    96         * @param TMsvEntry reference to entry to be written to disk
       
    97         * @return error code KErrNone, if successful
       
    98         */
       
    99         TInt ChangeIndexEntry( TMsvEntry& aTMsvEntry );
       
   100 
       
   101         /**
       
   102         * Sets context to specified message entry
       
   103         * @param aId ID of the new message entry.
       
   104         * @return error code, KErrNone if successful
       
   105         */
       
   106         TInt SetCurrentEntry( TMsvId aEntryId );
       
   107 
       
   108         /**
       
   109         * Returns total size of all attachments including mime headers
       
   110         * and binary attachment data. Linked attachments are included
       
   111         * This function is needed to allocate the encoding buffer.
       
   112         * @param aStore Read store for the message entry
       
   113         * @return combined size of all attachments, including linked attachments
       
   114         */
       
   115         TInt AttachmentsSizeL( CMsvStore& aStore );
       
   116         
       
   117         /**
       
   118         * Check if disk space is below critical level when storing data.
       
   119         * @param aDataSize amount of data to be added. If aDataSize == 0,
       
   120         *     returns info if disk space is already below critical level.
       
   121         * @return error code KErrDiskFull if data does not fit,
       
   122         *     KErrNone if data fits.
       
   123         *     May return some other error code if appropriate.
       
   124         *     KErrNone always means it is all right to save the data.
       
   125         */
       
   126         TInt DiskSpaceBelowCriticalLevelL( TInt aDataSize );
       
   127 
       
   128         /**
       
   129         * Store CMmsHeaders to message store for main message entry.
       
   130         * @param aMmsHeaders headers to store.
       
   131         * @param aStore store to be used. If not given, function gets and commits store
       
   132         * @return error code if not successful, KErrNone if successful.
       
   133         */
       
   134         TInt StoreMmsHeadersL( CMmsHeaders& aMmsHeaders, CMsvStore* aStore );
       
   135 
       
   136         /**
       
   137         * Restore CMmsHeaders from message store for main message entry.
       
   138         * @param aMmsHeaders headers to restore.
       
   139         * Leaves if cannot restore headers.
       
   140         */
       
   141         void RestoreMmsHeadersL( CMmsHeaders& aMmsHeaders, CMsvStore* aStore );
       
   142         
       
   143         /**
       
   144         * Create attachment, save data to file and save MIME headers.
       
   145         *     Must check first if enough disk space.
       
   146         *     DRM handling is done here if needed.
       
   147         *     Return code tells if whole attachment was removed.
       
   148         *     This is the one-shot function that does everything:
       
   149         *     Creates attachent, opens file, writes data, flushes it,
       
   150         *     closes file, saves MIME headers.
       
   151         *     Caller must commit and close store
       
   152         * @param aStore edit store for current entry
       
   153         * @param aFileName Suggested filename.
       
   154         * @param aAttachmentData Pointer to the attachment binary data.
       
   155         * @param aMimeHeaders Mime header structure to be saved.
       
   156         * @param aAttachment id of the newly created attachment if successful
       
   157         * @param aAttachmentSize size of the attachment binary data + mime headers
       
   158         * @param aDRMFlags structure where DRM flags are collected.
       
   159         *     These flags will ultimately be collected together for all
       
   160         *     attachments and stored into iMtmData1 of the parent entry.
       
   161         *     Therefore the function must only OR new flags into the structure
       
   162         *     and must not change any other bits (the same value may be reused
       
   163         *     for all attachments collecting the flags together).
       
   164         * @return Error code must indicate if attachment was removed (DRM) so that
       
   165         *     the first attachment id may be adjusted. (Decode must keep track
       
   166         *     of the first attachment in case root is not specified for
       
   167         *     multipart/related structure.
       
   168         *     KErrNone = All well.
       
   169         *     KDRMRemoved = all well otherwise, but DRM attachment was removed,
       
   170         *         and first attachment id must be adjusted accordingly.
       
   171         *     Some other error code means a more serious error.
       
   172         */
       
   173         TInt CreateFileAttachmentL(
       
   174             CMsvStore& aStore,
       
   175             const TDesC& aFileName,
       
   176             const TPtrC8& aAttachmentData,
       
   177             CMsvMimeHeaders& aMimeHeaders,
       
   178             TMsvAttachmentId& aAttachment,
       
   179             TInt& aAttachmentSize,
       
   180             TInt32& aDRMFlags);
       
   181 
       
   182         /**
       
   183         * Deletes a message store entry.
       
   184         * @param aEntryIndex is the index of the entry, which will be deleted. 
       
   185         * If the Entry has children, all children are destroyed too.
       
   186         * @return error code if not successful, KErrNone if successful.
       
   187         */
       
   188         TInt DeleteEntry( TMsvId aEntryIndex );
       
   189 
       
   190         /**
       
   191         * From MMmsEntryWrapper: Check if aFileName would be a valid filename.
       
   192         * Cannot use path because absolute path is not known. Only filename is checked
       
   193         * @param aFileName suggestion of a filename.
       
   194         * @return ETrue if filename is valid, EFalse if not.
       
   195         */
       
   196         TBool IsValidFilename( const TPtrC& aFileName );
       
   197 
       
   198         /**
       
   199         * Read the decoding flag from the service entry.
       
   200         *     (Info stored in MMS service entry)
       
   201         * @return ETrue = Log add details while decoding
       
   202         *     EFalse = Don't log details.
       
   203         */
       
   204         TBool GetDecodingFlag();
       
   205 
       
   206         /**
       
   207         * Read the dump flag from the service entry.
       
   208         *     The dump flag tells if all incoming messages are dumped to a file.
       
   209         * @return ETrue = dump binary message to file while decoding
       
   210         *     EFalse = No binary dump wanted
       
   211         */
       
   212         TBool GetDumpFlag();
       
   213 
       
   214         /**
       
   215         * From MMmsEntryWrapper
       
   216         * Create Empty attachment file and save Mime headers.
       
   217         *     DRM check is done here.
       
   218         *     This function is the initialization function for chunked
       
   219         *         attachment handling.
       
   220         *     This function creates attachent, opens file, and saves MIME headers.
       
   221         *
       
   222         * @since v3.1
       
   223         * @param aStore edit store for current message entry
       
   224         *      Caller must keep store open until FinalizeAttachmentL has been called.
       
   225         * @param aFileName Suggested filename.
       
   226         * @param aMimeHeaders Mime header structure to be saved.
       
   227         * @param aAttachment id of the newly created attachment if successful
       
   228         * @param aAttachmentSize size of the attachment binary data + mime headers
       
   229         */
       
   230         void CreateEmptyFileAttachmentL(
       
   231             CMsvStore& aStore,
       
   232             const TDesC& aFileName,
       
   233             CMsvMimeHeaders& aMimeHeaders,
       
   234             TMsvAttachmentId& aAttachment);
       
   235             
       
   236         /**
       
   237         * From MMmsEntryWrapper
       
   238         * Write attachment data into file.
       
   239         * Call DRM handler if needed.
       
   240         *
       
   241         * @since v3.1
       
   242         *
       
   243         * @param aAttachmentData Pointer to the attachment binary data.
       
   244         * @param aDRMFlags structure where DRM flags are collected.
       
   245         *     These flags will ultimately be collected together for all
       
   246         *     attachments and stored into iMtmData1 of the parent entry.
       
   247         *     Therefore the function must only OR new flags into the structure
       
   248         *     and must not change any other bits (the same value may be reused
       
   249         *     for all attachments collecting the flags together).
       
   250         * @return Error code must indicate if attachment was removed (DRM) so that
       
   251         *     KErrNone = All well.
       
   252         *     KDRMRemoved = all well otherwise, but DRM attachment was removed,
       
   253         *         and first attachment id must be adjusted accordingly.
       
   254         *     Some other error code means an error.
       
   255         * Leaves if memory runs out
       
   256         */
       
   257         TInt ProcessAttachmentDataL(
       
   258             const TPtrC8& aAttachmentData,
       
   259             TInt32& aDRMFlags );
       
   260         
       
   261         /**
       
   262         * From MMmsEntryWrapper
       
   263         * Finalize the attachment.
       
   264         * Flush buffers and close file, calculate total size.
       
   265         * Caller must commit the store after this
       
   266         *
       
   267         * @since v3.1
       
   268         *
       
   269         * @param aStore edit store for current entry
       
   270         * @param aAttachmentSize size of the attachment binary data + mime headers
       
   271         * @param aDRMFlags structure where DRM flags are collected.
       
   272         *     These flags will ultimately be collected together for all
       
   273         *     attachments and stored into iMtmData1 of the parent entry.
       
   274         *     Therefore the function must only OR new flags into the structure
       
   275         *     and must not change any other bits (the same value may be reused
       
   276         *     for all attachments collecting the flags together).
       
   277         * @return Error code must indicate if attachment was removed (DRM) so that
       
   278         *     KErrNone = All well.
       
   279         *     KDRMRemoved = all well otherwise, but DRM attachment was removed,
       
   280         *         and first attachment id must be adjusted accordingly.
       
   281         *     Some other error code means an error.
       
   282         * Leaves if memory runs out
       
   283         */
       
   284         TInt FinalizeAttachmentL(
       
   285             CMsvStore& aStore,
       
   286             TInt& aAttachmentSize,
       
   287             TInt32& aDRMFlags );
       
   288     
       
   289 
       
   290     protected:  // New functions
       
   291         
       
   292     protected:  // Functions from base classes
       
   293         
       
   294     private:
       
   295 
       
   296         /**
       
   297         * C++ constructor.
       
   298         * @param aFs opened file system handle.
       
   299         * @param aEntry reference to a CmsvEntry entry,
       
   300         *     originally refers to the entry to be handled.
       
   301         * @param aUseDrm is DRM handling needed
       
   302         */
       
   303         CMmsClientEntry( RFs& aFs, CMsvEntry& aEntry );
       
   304 
       
   305         /**
       
   306         * @param aServiceId TMsvId of MMS service entry.
       
   307         */
       
   308         void ConstructL( TMsvId aServiceId );
       
   309 
       
   310 
       
   311     public:     // Data
       
   312     
       
   313     protected:  // Data
       
   314 
       
   315     private:    // Data
       
   316         RFs&       iFs;                // file system handle
       
   317         CMsvEntry& iCMsvEntry;         // message entry
       
   318         TMsvId     iMessageEntry;      // Id of the current message entry
       
   319         TMsvId     iServiceId;         // MMS service entry id
       
   320         TInt       iMessageDrive;      // messages are on C: drive by default,
       
   321                                        // may be moved to other drive
       
   322         TBool      iDump;              // dump flag
       
   323         TBool      iLogAllDecoded;     // detailed logging flag
       
   324         RFile      iAttaFile;          // file handle for writing the attachment
       
   325         TBool      iFileOpen;          // keep track if we have an open file and stream
       
   326         TMsvAttachmentId iAttaId;      // current attachment
       
   327                 
       
   328     public:     // Friend classes
       
   329     protected:  // Friend classes
       
   330     private:    // Friend classes
       
   331 
       
   332     };
       
   333 
       
   334 #endif      // MMSCLIENTENTRY_H   
       
   335             
       
   336 // End of File