persistentstorage/centralrepository/common/src/cregen.cpp
changeset 0 08ec8eefde2f
child 55 44f437012c90
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     1 // Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
       
     2 // All rights reserved.
       
     3 // This component and the accompanying materials are made available
       
     4 // under the terms of "Eclipse Public License v1.0"
       
     5 // which accompanies this distribution, and is available
       
     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     7 //
       
     8 // Initial Contributors:
       
     9 // Nokia Corporation - initial contribution.
       
    10 //
       
    11 // Contributors:
       
    12 //
       
    13 // Description:
       
    14 //
       
    15 
       
    16 #include <s32file.h>
       
    17 #include "cregen.h"
       
    18 #include "heaprepos.h"
       
    19 #include "srvparams.h"
       
    20 
       
    21 _LIT(KTmpExtension,"tmp");
       
    22 
       
    23 void CCreGenerator::CommitChangesToCreL(RFs& aFs,TUint8 aPersistVersion,CHeapRepository& aRep,const TDesC& aTargetFilePath)
       
    24 	{
       
    25 	HBufC* tmpFilePath=aTargetFilePath.AllocLC();
       
    26 	TPtr tmpFilePathPtr(tmpFilePath->Des());
       
    27 	tmpFilePathPtr.Replace(tmpFilePath->Length()-3,3,KTmpExtension());
       
    28 
       
    29 	CDirectFileStore* store = CDirectFileStore::ReplaceLC(aFs, *tmpFilePath,(EFileWrite | EFileShareExclusive));
       
    30 	
       
    31 	const TUid uid2	 = KNullUid ;														 
       
    32 	store->SetTypeL(TUidType(KDirectFileStoreLayoutUid, uid2, KServerUid3)) ; 
       
    33 
       
    34 	// Write the stream index/dictionary as root stream within the store
       
    35 	// so we can access it when we do a restore later on
       
    36 	RStoreWriteStream rootStream ;
       
    37 	TStreamId rootStreamId = rootStream.CreateLC(*store) ;
       
    38 	ExternalizeCre(aPersistVersion,aRep, rootStream) ;
       
    39 	rootStream.CommitL() ;
       
    40 		
       
    41 	CleanupStack::PopAndDestroy(&rootStream) ;
       
    42 	store->SetRootL(rootStreamId);
       
    43 	store->CommitL();
       
    44 	CleanupStack::PopAndDestroy(store) ;	
       
    45 	User::LeaveIfError(aFs.Replace(*tmpFilePath,aTargetFilePath));
       
    46 	CleanupStack::PopAndDestroy();
       
    47 	}
       
    48 
       
    49 void CCreGenerator::CreateReposFromCreL(RFs& aFs,CHeapRepository& aRep, const TDesC& aFilePath
       
    50 #ifdef SYMBIAN_CENTREP_SUPPORT_MULTIROFS
       
    51 	,TUint8& aCreVersion
       
    52 #endif	
       
    53 	)
       
    54 	{
       
    55 	RFile file;
       
    56 	TInt err = file.Open(aFs,aFilePath,EFileRead|EFileShareReadersOnly);	
       
    57 	
       
    58 	if (err != KErrNone)
       
    59 		{
       
    60 		if(err ==KErrNotFound || err==KErrPathNotFound)
       
    61 			User::Leave(KErrNotFound);
       
    62 		else
       
    63 			User::Leave(err);
       
    64 		}
       
    65 	
       
    66 	CleanupClosePushL(file);
       
    67 	
       
    68 	CDirectFileStore* store = CDirectFileStore::FromLC (file);
       
    69 	if(store->Type()[0] != KDirectFileStoreLayoutUid)
       
    70 		{
       
    71 		User::Leave(KErrCorrupt);
       
    72 		}
       
    73 
       
    74 	// Get the root stream and attempt to read the index from it
       
    75 	TStreamId rootStreamId = store->Root() ;
       
    76 	RStoreReadStream rootStream ;
       
    77 	rootStream.OpenLC(*store, rootStreamId);
       
    78 	// Internalize the repository
       
    79 	InternalizeCreL(aRep, rootStream
       
    80 #ifdef SYMBIAN_CENTREP_SUPPORT_MULTIROFS
       
    81 	,aCreVersion
       
    82 #endif	
       
    83 	);
       
    84 	CleanupStack::PopAndDestroy(3, &file);
       
    85 	}
       
    86 
       
    87 void CCreGenerator::ExternalizeCre(TUint8 aPersistVersion,const CHeapRepository& aRep, RWriteStream& aStream)
       
    88 	{
       
    89 	aStream << aPersistVersion;
       
    90 	aStream << aRep.iUid ;
       
    91 	aStream << aRep.iOwner ;
       
    92 	
       
    93 	TUint32 count=aRep.iSinglePolicies.Count();
       
    94 	aStream << count;
       
    95 	for(TUint32 i=0; i<count;i++)
       
    96 		{
       
    97 		aStream << *(aRep.iSinglePolicies[i]);
       
    98 		}
       
    99 	
       
   100 	aStream << aRep.iRangePolicies ;
       
   101 	aStream << aRep.iDefaultPolicy.GetReadAccessPolicy()->Package() ;
       
   102 	aStream << aRep.iDefaultPolicy.GetWriteAccessPolicy()->Package() ;
       
   103 #ifdef SYMBIAN_CENTREP_SUPPORT_MULTIROFS	
       
   104 	if (aPersistVersion>=KPersistFormatSupportsIndMetaIndicator)
       
   105 		{
       
   106 		aStream << aRep.iDefaultPolicy.HighKey();
       
   107 		aStream << aRep.iDefaultPolicy.KeyMask();		
       
   108 		}
       
   109 #endif		
       
   110 		
       
   111 	aStream << aRep.iDefaultMeta ;
       
   112 	aStream << aRep.iRangeMeta ;
       
   113 	aStream << aRep.iTimeStamp.Int64() ;
       
   114 
       
   115 	aStream << aRep.iSettings ;
       
   116 	
       
   117 	// Deleted settings
       
   118 	count = aRep.iDeletedSettings.Count() ;
       
   119 	aStream << count ;
       
   120 	for (TUint32 i=0; i<count; i++)
       
   121 		{
       
   122 		aStream << aRep.iDeletedSettings[i];
       
   123 		}
       
   124 	}
       
   125 
       
   126 void CCreGenerator::InternalizeCreL(CHeapRepository& aRep, RReadStream& aStream
       
   127 #ifdef SYMBIAN_CENTREP_SUPPORT_MULTIROFS
       
   128 	,TUint8& aCreVersion
       
   129 #endif	
       
   130 	)
       
   131 	{
       
   132 	TUint8 version;
       
   133 	aStream >> version;
       
   134 	 
       
   135  	// Check the UID is the same as that expected.
       
   136  	// UID should always be correctly initialised by the time we reach
       
   137  	// this point.
       
   138  	TUid tempUid;
       
   139  	aStream >> tempUid;
       
   140  
       
   141  	if (tempUid != aRep.iUid)
       
   142  		{
       
   143  		#ifdef _DEBUG
       
   144  		RDebug::Print(_L("CSharedRepository::InternalizeCreL - expected UID (from filename) - %08X,  UID extracted from binary file - %08X "), aRep.iUid.iUid, tempUid.iUid);
       
   145  		#endif
       
   146  		User::Leave(KErrCorrupt);
       
   147  		}
       
   148   
       
   149 	aStream >> aRep.iOwner ;
       
   150  
       
   151 	TUint32 count;
       
   152 	aStream >> count;
       
   153 	for(TUint32 i=0; i<count;i++)
       
   154 		{
       
   155 		TSettingsAccessPolicy* singlePolicy = new(ELeave) TSettingsAccessPolicy;
       
   156 		CleanupStack::PushL(singlePolicy);
       
   157 		aStream >> *singlePolicy;
       
   158 		aRep.iSinglePolicies.AppendL(singlePolicy);
       
   159 		CleanupStack::Pop(singlePolicy);
       
   160 		}
       
   161  	
       
   162 	aRep.iRangePolicies.Reset();		
       
   163 	aStream >> aRep.iRangePolicies ;
       
   164 	
       
   165 	HBufC8* securityPolicyPackage ;
       
   166 	securityPolicyPackage = HBufC8::NewLC(aStream, 10000) ;
       
   167 	TSecurityPolicy defaultReadPolicy;
       
   168 	defaultReadPolicy.Set(securityPolicyPackage->Des()) ;
       
   169 	CleanupStack::PopAndDestroy(securityPolicyPackage) ;
       
   170 	securityPolicyPackage = HBufC8::NewLC(aStream, 10000) ;
       
   171 	TSecurityPolicy defaultWritePolicy;
       
   172 	defaultWritePolicy.Set(securityPolicyPackage->Des()) ;
       
   173 	CleanupStack::PopAndDestroy(securityPolicyPackage) ;
       
   174 #ifdef SYMBIAN_CENTREP_SUPPORT_MULTIROFS	
       
   175 	aCreVersion=version;
       
   176 	TUint32 highKey=0;
       
   177 	TUint32 keyMask=0;
       
   178 	if (aCreVersion>=KPersistFormatSupportsIndMetaIndicator)
       
   179 		{
       
   180 		aStream >> highKey;
       
   181 		aStream >> keyMask;		
       
   182 		}
       
   183 	aRep.iDefaultPolicy=TSettingsAccessPolicy(defaultReadPolicy,defaultWritePolicy, KUnspecifiedKey,highKey,keyMask);		
       
   184 #else				
       
   185 	aRep.iDefaultPolicy=TSettingsAccessPolicy(defaultReadPolicy,defaultWritePolicy, KUnspecifiedKey);
       
   186 #endif	
       
   187 	aStream >> aRep.iDefaultMeta ;
       
   188 	
       
   189 	aRep.iRangeMeta.Reset();
       
   190 	aStream >> aRep.iRangeMeta ;
       
   191 	
       
   192 	TInt64 timeStampInt ;
       
   193 	aStream >> timeStampInt ;
       
   194 	aRep.iTimeStamp = timeStampInt ;
       
   195 
       
   196 	aRep.iSettings.Reset() ;
       
   197 	aStream >> aRep.iSettings ;
       
   198  	
       
   199 	if (version >= KPersistFormatSupportsDeletedSettings)
       
   200 		{
       
   201 		// Deleted Settings 
       
   202 		aStream >> count  ;
       
   203 		for (TUint32 i=0; i<count; i++)
       
   204 			{
       
   205 			TUint32 keyValue ;
       
   206 			aStream >> keyValue ;
       
   207 			aRep.iDeletedSettings.InsertInUnsignedKeyOrderL(keyValue);
       
   208 			}
       
   209 		}
       
   210  
       
   211 	// Set up access policies
       
   212 	TInt numElements = aRep.iSettings.Count();
       
   213 	for (TInt count = 0; count < numElements; count++)
       
   214 		{
       
   215 		TServerSetting* setting= &(aRep.iSettings[count]);
       
   216 		TUint32 key=setting->Key();
       
   217 		setting->SetAccessPolicy(aRep.GetFallbackAccessPolicy(key));
       
   218 		}
       
   219 	}