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/*
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* Copyright (c) 2007-2010 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 the License "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 "policyreader.h"
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#include <ups/ups.hrh>
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#include <ups/upserr.h>
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#include "upslog.h"
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using namespace UserPromptService;
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/// The policy resource format is versioned.
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static const TInt KPolicyFormatVersion = 1;
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TPolicyHeader::TPolicyHeader()
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/**
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Constructor
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*/
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: iFormatVersion(0), iMajorVersion(0), iMinorVersion(0), iAuthPolicy(EAlwaysCheck),
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iDefaultPolicyEvaluator(TUid::Null()), iDefaultDialogCreator(TUid::Null())
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{
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}
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void CPolicyReader::ReadPolicyHeaderL()
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/**
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Reads the header information from the policy file.
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*/
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{
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TUint16 formatVersion = iReader.ReadUint16L();
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if (formatVersion != KPolicyFormatVersion)
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{
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User::Leave(KErrUpsBadPolicyFile);
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}
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(void) iReader.ReadUint32L(); // Skip reserved LLINK
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iHeader.iFormatVersion = formatVersion;
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iHeader.iMajorVersion = iReader.ReadUint16L();
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iHeader.iMinorVersion = iReader.ReadUint16L();
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iHeader.iAuthPolicy = static_cast<TAuthorisationPolicy>(iReader.ReadInt8L());
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iHeader.iDefaultPolicyEvaluator = TUid::Uid(iReader.ReadInt32L());
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iHeader.iDefaultDialogCreator = TUid::Uid(iReader.ReadInt32L());
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if (iHeader.iDefaultDialogCreator.iUid == 0)
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{
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User::Leave(KErrUpsBadPolicyFile);
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}
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}
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EXPORT_C CPolicyReader* CPolicyReader::NewL(RFs& aRFs, const TDesC& aPolicyFileName)
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/**
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Creates a policy reader object.
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@param aRFs the file server session used by the resource parser.
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@param aPolicyFileName the name of the User Prompt Service policy file to read.
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@return The new policy reader.
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*/
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{
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CPolicyReader* self = CPolicyReader::NewLC(aRFs, aPolicyFileName);
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CleanupStack::Pop(self);
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return self;
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}
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EXPORT_C CPolicyReader* CPolicyReader::NewLC(RFs& aRFs, const TDesC& aPolicyFileName)
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/**
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Creates a policy reader object and places the pointer on the cleanup stack.
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@param aRFs the file server session used by the resource parser.
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@param aPolicyFileName the name of the User Prompt Service policy file to read.
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@return The new policy reader.
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*/
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{
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CPolicyReader* self = new(ELeave) CPolicyReader();
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CleanupStack::PushL(self);
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self->ConstructL(aRFs, aPolicyFileName);
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return self;
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}
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void CPolicyReader::ConstructL(RFs& aFs, const TDesC& aResourceFileName)
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/**
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Second phase constructor.
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- Creates the resource reader.
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- Reads the default policy evaluator and dialog creator UIDs.
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- Reads the number of policies in the resource file.
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@param aRFs The file server session used by the resource parser.
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@param aPolicyFileName The name of the User Prompt Service policy file to read.
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*/
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{
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DEBUG_PRINTF2(_L("Loading UPS policy file %S"), &aResourceFileName);
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RFile r;
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User::LeaveIfError(r.Open(aFs, aResourceFileName, EFileRead | EFileShareReadersOnly));
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CleanupClosePushL(r);
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TInt size;
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User::LeaveIfError(r.Size(size));
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CleanupStack::PopAndDestroy(&r);
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iResourceFile = CResourceFile::NewL(aFs, aResourceFileName, 0, size);
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iReader.OpenL(iResourceFile, KPolicyResourceId);
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TUidType u(iResourceFile->UidType());
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if (u[1] != TUid::Uid(KUidUpsPolicyResourceFile))
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{
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User::Leave(KErrUpsBadPolicyFile);
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}
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ReadPolicyHeaderL();
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iPolicyCount = iReader.ReadUint16L();
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if (iPolicyCount < 0)
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{
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User::Leave(KErrUpsBadPolicyFile);
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}
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}
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EXPORT_C const TPolicyHeader& CPolicyReader::Header() const
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/**
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Gets the header information for this policy file.
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@return A const reference to the policy header information.
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*/
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{
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return iHeader;
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}
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CPolicyReader::CPolicyReader()
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/**
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Constructor
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*/
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{
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}
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CPolicyReader::~CPolicyReader()
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/**
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Destructor
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*/
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{
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iReader.Close();
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delete iResourceFile;
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}
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EXPORT_C CPolicy* CPolicyReader::DefaultPolicyL()
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/**
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Factory method for creating a default policy object from the
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information in the UPS policy file header.
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@return A pointer to the default policy object.
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*/
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{
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_LIT(KAllDestinations, "*");
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TSidClasses allSidClasses(0xFFFF);
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RArray<TSecureId> sidList;
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CleanupClosePushL(sidList);
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CPolicy* p = CPolicy::NewL(
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allSidClasses, sidList, KAllDestinations,
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CPolicy::EYes | CPolicy::ENo, iHeader.iDefaultPolicyEvaluator, iHeader.iDefaultDialogCreator,
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0, CPolicy::ESystemServerSecurityPassedOrFailed,
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iHeader.iMajorVersion, iHeader.iMinorVersion, ETrue);
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CleanupStack::PopAndDestroy(&sidList);
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return p;
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}
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EXPORT_C CPolicy* CPolicyReader::NextPolicyL()
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/**
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Gets the next policy from the resource file.
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@return A pointer to the new policy object or null if the end of
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the file has been reached.
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*/
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{
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CPolicy* p(0);
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if (iPolicyNum < iPolicyCount)
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{
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p = ReadPolicyL();
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++iPolicyNum;
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}
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return p;
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}
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CPolicy* CPolicyReader::ReadPolicyL()
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/**
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Reads the next policy from the resource file.
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@return A pointer to the new policy object.
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*/
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{
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TUint32 classes = iReader.ReadUint32L();
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TSidClasses sidClasses(classes);
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TInt numSids = iReader.ReadInt16L();
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if (numSids < 0)
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{
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User::Leave(KErrUpsBadPolicyFile);
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}
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RArray<TSecureId> sidList(8);
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CleanupClosePushL(sidList);
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for (TInt i = 0; i < numSids; ++i)
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{
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sidList.AppendL(TSecureId(iReader.ReadUint32L()));
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}
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TUint8 ssSecurity = iReader.ReadUint8L();
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CPolicy::TSystemServerSecurity systemServerSecurity =
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CPolicy::ESystemServerSecurityPassedOrFailed;
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switch (ssSecurity)
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{
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case CPolicy::ESystemServerSecurityPassedOrFailed:
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systemServerSecurity = CPolicy::ESystemServerSecurityPassedOrFailed;
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break;
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case CPolicy::ESystemServerSecurityPassed:
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systemServerSecurity = CPolicy::ESystemServerSecurityPassed;
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break;
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case CPolicy::ESystemServerSecurityFailed:
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systemServerSecurity = CPolicy::ESystemServerSecurityFailed;
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break;
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default:
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User::Leave(KErrUpsBadPolicyFile);
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break;
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}
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HBufC* destination(iReader.ReadHBufCL());
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if (! destination)
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{
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destination = HBufC::NewL(0);
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}
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CleanupStack::PushL(destination);
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TUint options(iReader.ReadUint32L());
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if ((options &
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~(CPolicy::EYes|CPolicy::ENo|CPolicy::ESessionYes|CPolicy::ESessionNo|CPolicy::EAlways|CPolicy::ENever)) != 0)
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{
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User::Leave(KErrUpsBadPolicyFile);
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}
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TUid policyEvaluator = TUid::Uid(iReader.ReadInt32L());
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if (policyEvaluator == TUid::Null())
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{
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policyEvaluator = iHeader.iDefaultPolicyEvaluator;
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}
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TUid dialogCreator = TUid::Uid(iReader.ReadInt32L());
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if (dialogCreator == TUid::Null())
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{
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dialogCreator = iHeader.iDefaultDialogCreator;
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}
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TUint16 flags(iReader.ReadUint16L());
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iReader.ReadUint16L(); // skip over reserved flags
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iReader.ReadUint32L(); // skip over reserved link
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CPolicy* pol = CPolicy::NewL(sidClasses, sidList, *destination,
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options, policyEvaluator, dialogCreator, flags, systemServerSecurity,
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iHeader.iMajorVersion, iHeader.iMinorVersion);
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CleanupStack::PopAndDestroy(2, &sidList); // destination, sidList
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return pol;
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}
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