--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/persistentstorage/dbms/sdbms/Sd_DbProps2.cpp	Fri Jan 22 11:06:30 2010 +0200
@@ -0,0 +1,315 @@
+// Copyright (c) 2004-2009 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:
+// RDbPropsFactory class - "DBMS Security" related - full security support
+// 
+//
+
+#include <f32file.h>
+#include "D32DRVR.H"
+#include "U32STD.H"
+#include "D32Strings.h"
+#include "Sd_DbProps.h"
+#include "Sd_DbList.h"
+
+using namespace DBSC;
+
+/**
+Utility method, which can be used separately to remove the common part of a secure
+shared database name. The input string format is:
+"DBS_UID_<DbName>". 
+The output string format is:
+"<DbName>". 
+@param aDbName An output/input parameter. Th input format is: "DBS_UID_<DbName>".
+               The output format is: "<DbName>". 
+@panic The method will panic in debug builds in case of a bad input string.
+*/
+void RDbPropsFactory::StripCommonPart(TDes& aDbName)
+	{
+	TInt pos = aDbName.FindF(KDbsPrefix);
+	__ASSERT_DEBUG(pos != KErrNotFound, User::Invariant());
+	aDbName.Delete(pos, KDbsPrefix().Length());
+	//Remove the UID from the string
+	TInt pos_b = aDbName.Locate('_');
+	
+	TPtrC right = aDbName.Mid(pos_b+1);
+	TInt pos_e = right.Locate('_') + pos_b + 1;
+	
+	__ASSERT_DEBUG(pos_b != KErrNotFound && pos_e != KErrNotFound, User::Invariant());
+	aDbName.Delete(pos_b, pos_e - pos_b + 1);
+	}
+
+/**
+Utility method, which can be used separately to construct the common part of the secure
+shared database name. The result string format is:
+"DBS_UID_"
+@param aPolicyUid Security policy UID.
+@param aRes An output parameter, referencing the location, where the constructed string will be stored.
+*/
+void RDbPropsFactory::ConstructCommonPart(TUid aPolicyUid, TDes& aRes)
+	{
+	aRes.Zero();
+	aRes.Append(KDbsPrefix);
+	aRes.Append('_');
+	aRes.AppendNumFixedWidthUC(aPolicyUid.iUid, EHex, 8);
+	aRes.Append('_');
+	}
+
+/**
+Standard factory method for TDbProps instances.
+The created TDbProps instance will be pushed in the cleanup stack.
+@return A pointer to the created TDbProps instance.
+@leave KErrNoMemory
+@internalComponent
+*/
+static TDbProps* NewDbPropsLC()
+	{
+	TDbProps* dbProps = new (ELeave) TDbProps;
+	CleanupStack::PushL(dbProps);
+	return dbProps;
+	}
+
+/**
+Extracts the drive number from the supplied TParse instance.
+@param aFileNameParser A reference to TParse instance, which will be used to extract the 
+drive number.
+@return Extracted TDriveNumber value.
+@leave KErrArgument aFileNameParser parameter does not contain a drive number or it cannot
+					be constructed from the string.
+@internalComponent
+*/
+static TDriveNumber ExtractDriveNumberL(TParse& aFileNameParser)
+	{
+	TPtrC drvPtr = aFileNameParser.Drive();
+	if(drvPtr.Length() == 0)
+		{
+		__LEAVE(KErrArgument);
+		}
+	TInt drvId = 0;
+	__LEAVE_IF_ERROR(RFs::CharToDrive(drvPtr[0], drvId));
+	return static_cast <TDriveNumber> (drvId);
+	}
+
+/**
+Creates private directory of the DBMS server if it does not exist (on a specific drive).
+If the supplied aDriveNumber parameter refers to a rom drive, the method does nothing.
+@param aDriveNumber The drive number, where the private DBMS data directory has to be created.
+@param aFs A file session instance.
+@leave RFs::CreatePrivatePath() leave error codes.
+@internalComponent
+*/
+static void CreatePrivateDataPathL(TDriveNumber aDriveNumber, RFs& aFs)
+	{
+	TDriveInfo driveInfo;
+	__LEAVE_IF_ERROR(aFs.Drive(driveInfo, aDriveNumber));
+	if(driveInfo.iDriveAtt & KDriveAttRom)
+		{//ROM drive - do nothing.
+		return;
+		}
+	TInt err = aFs.CreatePrivatePath(aDriveNumber);
+	if(err != KErrNone && err != KErrAlreadyExists)
+		{
+		__LEAVE(err);
+		}
+	}
+
+/**
+*/
+RDbPropsFactory::RDbPropsFactory(RFs& aFs) :
+	iFs(aFs),
+	iFileNameParser(NULL),
+	iPrivateDataPath(NULL)
+	{
+	}
+
+/**
+Initializes RDbPropsFactory instance
+@leave One of the system wide error codes, including KErrNoMemory.
+*/
+void RDbPropsFactory::OpenL()
+	{
+	iFileNameParser = new (ELeave) TParse;
+	iPrivateDataPath = HBufC::NewL(KMaxFileName);
+	TPtr ptr(iPrivateDataPath->Des());
+	__LEAVE_IF_ERROR(iFs.PrivatePath(ptr));
+	}
+
+/**
+*/
+void RDbPropsFactory::Close()
+	{
+	delete iPrivateDataPath;
+	delete iFileNameParser;
+	}
+
+/**
+Extracts database properties from the database path and format string.
+The created and returned TDbProps instance will be pushed in the cleanup stack.
+@param aPath Database path.
+@param aFormatStr database format string.
+@return A pointer to the created TDbProps instance.
+@leave One of the system-wide error codes, including KErrNoMemory.
+*/
+TDbProps* RDbPropsFactory::ExtractLC(const TDesC& aPath, const TDesC& aFormatStr)
+	{
+	__ASSERT(iFileNameParser);
+	__ASSERT(iPrivateDataPath);
+
+	__LEAVE_IF_ERROR(iFileNameParser->Set(aPath, NULL, NULL));
+	TDbProps* dbProps = ::NewDbPropsLC();
+
+	//TDbProps::iDbsUid.iUid, TDbProps::iDbsUid.iRqAccess
+	TPtrC fmtIdent;//fmtIdent may contain KSecure keyword.
+	::ExtractUidAndName(aFormatStr, dbProps->iDbPolicyRequest.iUid, fmtIdent);
+	dbProps->iDbPolicyRequest.iAccessType = (fmtIdent.CompareF(KSecure) == 0 ? EATSecure : EATNonSecure);
+
+	//TDbProps::iDriveNumber
+	dbProps->iDriveNumber = ::ExtractDriveNumberL(*iFileNameParser);
+	::CheckDriveL(iFs, dbProps->iDriveNumber);
+
+	if(dbProps->iDbPolicyRequest.iAccessType == EATSecure)
+		{//requested access to a secure shared database
+		ExtractSecureL(aFormatStr, *dbProps);
+		}
+	else
+		{//requested access to a non-secure database
+		ExtractNonSecureL(aPath, aFormatStr, *dbProps);
+		}
+
+	return dbProps;
+	}
+
+/**
+Extracts database properties from the database path, assuming that this is a secure shared
+database.
+The created and returned TDbProps instance will be pushed in the cleanup stack.
+@param aPath Database path.
+@param aPolicyUid Security policy UID.
+@return A pointer to the created TDbProps instance.
+@leave One of the system-wide error codes, including KErrNoMemory.
+*/
+TDbProps* RDbPropsFactory::ExtractLC(const TDesC& aPath, TUid aPolicyUid)
+	{
+	TBuf<32> dbFormat;
+	dbFormat.Copy(KSecure);
+	dbFormat.Append(aPolicyUid.Name());
+	return ExtractLC(aPath, dbFormat);
+	}
+
+/**
+Utility method, which can be used separately to get the common part of the secure
+shared database full path. The result string format is:
+"<Drive>:\<PrivatePath>\"
+@param aDriveNumber A drive number, for which the private data path string has to be constructed.
+@param aRes An output parameter, referencing the location, where the created private path has to be copied.
+@leave RFs::DriveToChar() leave error codes
+*/
+void RDbPropsFactory::GetPrivatePathL(TDriveNumber aDriveNumber, TDes& aRes) const
+	{
+	aRes.Zero();
+	TChar driveChar;
+	__LEAVE_IF_ERROR(RFs::DriveToChar(aDriveNumber, driveChar));
+	aRes.Append(driveChar);
+	aRes.Append(':');
+	aRes.Append(*iPrivateDataPath);
+	}
+
+/**
+Extracts secure shared database properties.
+@param aFormatStr Secure shared database format string.
+@param aDbProps An output parameter, referencing the location, where the datapase properties will be stored.
+@leave KErrArgument Bad format string. Some of the other system-wide error codes.
+*/
+void RDbPropsFactory::ExtractSecureL(const TDesC& aFormatStr, TDbProps& aDbProps)
+	{	
+	if(aDbProps.iDbPolicyRequest.iUid == KNullUid)
+		{//Secure shared database cannot have null uid.
+		__LEAVE(KErrArgument);
+		}
+	if(iFileNameParser->PathPresent())
+		{//The path can contain only the database name.
+		__LEAVE(KErrArgument);
+		}
+	TPtrC dbName = iFileNameParser->NameAndExt();
+	if(dbName.Length() > KDbMaxName)
+		{//There is a limit for the secure shared database names
+		__LEAVE(KErrArgument);
+		}
+	::CreatePrivateDataPathL(aDbProps.iDriveNumber, iFs);
+	ConstructFullDbPathL(aDbProps);
+	ConstructFormatString(aDbProps, aFormatStr);
+	}
+
+/**
+Extracts non-secure database properties.
+@param aPath Database path.
+@param aFormatStr Database format string.
+@param aDbProps An output parameter, referencing the location, where the datapase properties will be stored.
+@leave KErrPermissionDenied The database path contains the DBMS server private data path.
+*/
+void RDbPropsFactory::ExtractNonSecureL(const TDesC& aPath, const TDesC& aFormatStr, 
+										TDbProps& aDbProps)
+	{
+	//DBMS private data path cannot be the first in the database path. This is non-secure database.
+	TInt pos = aPath.FindF(iPrivateDataPath->Des());
+	if(pos != KErrNotFound)
+		{//If pos is 2 (pos 0 - drive letter, pos 1 - ':'), then 
+		 //the caller wants to create/open non-secure database in the DBMS private directory,
+		 //which is not allowed. 
+		if(pos == 2)
+			{
+			__LEAVE(KErrPermissionDenied);
+			}
+		}
+	//The database path and format string stay the same
+	aDbProps.iPath.Copy(aPath);
+	aDbProps.iFormatStr.Copy(aFormatStr);
+	}
+
+/**
+Constructs the full physical path of the secure shared database
+@param aDbProps An output parameter, where the database path will be stored.
+@leave RDbPropsFactory::GetPrivatePathL() leaving error codes
+@see RDbPropsFactory::GetPrivatePathL()
+*/
+void RDbPropsFactory::ConstructFullDbPathL(TDbProps& aDbProps)
+	{
+	GetPrivatePathL(aDbProps.iDriveNumber, aDbProps.iPath);
+	TBuf<32> dbNameCmnPart;
+	RDbPropsFactory::ConstructCommonPart(aDbProps.iDbPolicyRequest.iUid, dbNameCmnPart);
+	aDbProps.iPath.Append(dbNameCmnPart);
+	aDbProps.iPath.Append(iFileNameParser->Name());
+	aDbProps.iPath.Append(iFileNameParser->Ext());
+	}
+
+/**
+Processes the format string of secure shared database. "SECURE" keyword and security policy UID
+will be removed.
+@param aDbProps An input/output parameter, referencing TDbProps instance, where the processed
+                database format string will be stored.
+@param aFormatStr The database format string.
+*/
+void RDbPropsFactory::ConstructFormatString(TDbProps& aDbProps, const TDesC& aFormatStr)
+	{
+	TDes& fmtStr = aDbProps.iFormatStr;
+	fmtStr.Copy(aFormatStr);
+	//Remove KSecure keyword from the format string 
+	TInt pos = fmtStr.FindF(KSecure);
+	__ASSERT_DEBUG(pos != KErrNotFound, User::Invariant());
+	fmtStr.Delete(pos, KSecure().Length());
+	//Remove the UID from the format string
+	TInt pos_b = fmtStr.Locate('[');
+	TInt pos_e = fmtStr.Locate(']');
+	__ASSERT_DEBUG(pos_b != KErrNotFound && pos_e != KErrNotFound, User::Invariant());
+	fmtStr.Delete(pos_b, pos_e - pos_b + 1);
+	}