1 /*

     2 * Copyright (c) 2000 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: Implementation of policymanagement components

    15 *

    16 */

    17 

    18 

    19 #ifndef POLICY_PARSER_HEADER_

    20 #define POLICY_PARSER_HEADER_

    21 

    22 

    23 // INCLUDES

    24 

    25 #include "ElementBase.h"

    26 #include "PolicyEngineClientServer.h"

    27 

    28 #include <e32base.h>

    29 #include <contenthandler.h>

    30 #include <documentparameters.h>

    31 #include <cstack.h>

    32 #include <parser.h>

    33 

    34 // CONSTANTS

    35 

    36 enum TAllowedExternalIdConflicts

    37 {

    38 	KNoExternalIdCheck = 0,

    39 	KSameExternalIdAllowedForRoot,

    40 	KNoExternalIdConflictsAllowed

    41 };

    42 

    43 

    44 // MACROS

    45 // DATA TYPES

    46 // FUNCTION PROTOTYPES

    47 // FORWARD DECLARATIONS

    48 

    49 class CElementBase;

    50 class CPolicyStorage;

    51 

    52 // CLASS DECLARATION

    53 

    54 namespace ParserUtility

    55 {

    56 	TBool ContainsCDataField( TPtrC8& aChunk);

    57 	void ReadCDataAreaL( TPtrC8& aCDataArea, TPtrC8& aChunk, TPtrC8& aFinalPart);

    58 	void RemoveCDataMarksL( TPtrC8& aData);

    59 	TInt LineCounter( TPtrC8& aData);

    60 }

    61 

    62 class CPolicyParser : public CBase, public Xml::MContentHandler

    63 {

    64 	public:

    65 		static CPolicyParser * NewL( CPolicyStorage * aStorage);

    66 		CPolicyParser( CPolicyStorage * aStorage);

    67 		virtual ~CPolicyParser();

    68 	

    69 		void ConstructL();

    70 	

    71 		CElementBase * ParseXACMLObjects( TInt& aError, const TDesC8 &aXACML, TDes8 &aReturnText);

    72 		TInt ParseNativeObjects( CElementBase * aSeedElement, const TDesC8 &aNative, TBool aAddToEditableCache);

    73 		void HandleErrorL( const TDesC8 &aText);

    74 		void HandleErrorL( const TDesC8 &aText, const TDesC8 &aErrorElement);

    75 		void HandleErrorL( const TAny * aPointer, const TDesC8 &aError, const TDesC8 &aErrorElement);

    76 		TDesC8& ActiveElementName();

    77 		void HandleNativeErrorL( TInt aError);

    78 		

    79 		TLanguageSelector Language();

    80 		

    81 		void SetExternalIdChecked( TAllowedExternalIdConflicts aCheckerState);

    82 		void CheckExternalIdL( const HBufC8 * iExternalId);

    83 		void SetLineOffset( TInt aLine);

    84 		

    85 		//Validity Check functions

    86 		void CheckCompiningAlgorithmsL( TNativeElementTypes aType, const TDesC8& aAlgorithmId );

    87 		void CheckFunctionIdL( const TNativeElementTypes& aType, const TDesC8& aFunctionId );

    88 		void CheckEffectL( const TDesC8& aEffect );

    89 		void CheckDataTypeL( const TDesC8& aDataType );

    90 	

    91 		//convert XACML to Native 

    92 		const TDesC8& ConvertElementNamesL( const TDesC8& aElementName );

    93 		const TDesC8& ConvertAttributesL( const TDesC8& aType );

    94 		static const TDesC8& ConvertValues( TLanguageSelector aOriginalLanguage, const TDesC8& aValue);

    95 			

    96 		//from content handler

    97 		void OnStartDocumentL(const Xml::RDocumentParameters& aDocParam, TInt aErrorCode);

    98     	void OnEndDocumentL(TInt aErrorCode);

    99     	void OnStartElementL(const Xml::RTagInfo& aElement, const Xml::RAttributeArray& aAttributes, TInt aErrorCode);

   100     	void OnEndElementL(const Xml::RTagInfo& aElement, TInt aErrorCode);

   101     	void OnContentL(const TDesC8& aBytes, TInt aErrorCode);

   102     	void OnStartPrefixMappingL(const RString& aPrefix, const RString& aUri, TInt aErrorCode);

   103     	void OnEndPrefixMappingL(const RString& aPrefix, TInt aErrorCode);

   104     	void OnIgnorableWhiteSpaceL(const TDesC8& aBytes, TInt aErrorCode);

   105     	void OnSkippedEntityL(const RString& aName, TInt aErrorCode);

   106     	void OnProcessingInstructionL(const TDesC8& aTarget, const TDesC8& aData, TInt aErrorCode);

   107     	void OnError(TInt aErrorCode);

   108 		TAny* GetExtendedInterface(const TInt32 aUid);

   109 	

   110 	private:

   111 		void CreateIdElementsL( const TDesC8& aIdString);

   112 		void ParseL( const TDesC8 &aXACML);

   113 	

   114 	private: 

   115 		TPtrC8 iActiveElementName;

   116 		TInt iActiveLine;

   117 		TInt iLineOffset;

   118 		Xml::CParser * iParser;

   119 		CStack<CElementBase, EFalse> * iElementStack;

   120 		CElementBase * iActiveElement;

   121 		CElementBase * iRootElement;

   122 		CPolicyStorage * iStorage;

   123 		TLanguageSelector iLanguage;

   124 		TAllowedExternalIdConflicts iCheckerState;

   125 		TBool iErrorHandling;

   126 		TBuf8<KMaxReturnMessageLength> iReturnText;

   127 		TBool iAddToEditableCache;

   128 		TBool iValidCharacterSet;

   129 };

   130 

   131 

   132 #endif