secsrv_plat/wim_cert_api/inc/WimCert.h
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     1 /*
       
     2 * Copyright (c) 2002 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:  Reads certificates bypassing crypto token framework
       
    15 *
       
    16 */
       
    17 
       
    18 
       
    19 #ifndef WIMCERT_H
       
    20 #define WIMCERT_H
       
    21 
       
    22 
       
    23 //INCLUDES
       
    24 #include <e32base.h>
       
    25 #include <e32std.h>
       
    26 #include <ct.h>
       
    27 
       
    28 //TYPE DEFINITIONS
       
    29 typedef HBufC8* PHBufC8;
       
    30 typedef TPtr8* PTPtr8;
       
    31 
       
    32 enum TCertLocation
       
    33     {
       
    34     EUnknown_CDF,
       
    35     ECertificates_CDF,
       
    36     ETrustedCerts_CDF,
       
    37     EUsefulCerts_CDF
       
    38     };
       
    39 
       
    40 //FORWARD DECLARATIONS
       
    41 class RWimCertMgmt;
       
    42 class RWimMgmt;
       
    43 
       
    44 
       
    45 
       
    46 //CLASS DECLARATION
       
    47 /**
       
    48 *  Reads certificate extra information from Smart Card
       
    49 *
       
    50 *  @lib WimClient
       
    51 *  @since Series60 2.1
       
    52 */
       
    53 class CWimCert : public CActive
       
    54     {
       
    55     public: // Member functions
       
    56 
       
    57         /**
       
    58         * Two-phased constructor.
       
    59         */
       
    60         IMPORT_C static CWimCert* NewL();
       
    61 
       
    62         /**
       
    63         * Destructor
       
    64         */
       
    65         IMPORT_C virtual ~CWimCert();
       
    66         
       
    67         /**
       
    68         * Initializes the WIM server cache and restores certificates to 
       
    69         * WimClient memory area. This is the most time consuming call. 
       
    70         * @param  aStatus  Indicates the result of this call. Values:
       
    71         *         KErrNotFound, no certificates was found
       
    72         *         KErrNone, call was successull and at least one certificate 
       
    73         *         found.
       
    74         *         KErrGeneral, any other error
       
    75         *         KErrNoMemory, no memory
       
    76         * @return void
       
    77         */
       
    78         IMPORT_C void Initialize( TRequestStatus& aStatus );
       
    79 
       
    80         /** 
       
    81         * Cancels outgoing Initialize operation.
       
    82         * After necessary cleanup, caller (given aStatus) is signalled with 
       
    83         * KErrCancel 
       
    84         * @return void
       
    85         */
       
    86         IMPORT_C void CancelInitialize();
       
    87 
       
    88         /**
       
    89         * Fetches trusted usages and location information for Key ID.
       
    90         * @param  aKeyId (IN) Key identifier (hash), which points to a 
       
    91         *         certificate.
       
    92         * @param  aTrustedUsages (OUT) An array of OID strings indicating 
       
    93         *         trusted usage. The notation is dot delimited 
       
    94         *         (for example 1.23.456.7), the length of OÌD can vary. 
       
    95         *         (OID=Object IDentifier). Caller is responsible of
       
    96         *         destroying array.
       
    97         * @param  aLocation (OUT) Indicates certificate directory location 
       
    98         *         in Smart Card.
       
    99         * @param  aStatus  Indicates the result of this call. Values:
       
   100         *         KErrNotFound, given certificate KeyId was not found from card
       
   101         *         KErrNone, no errors, given certificate was found and trusted 
       
   102         *                   usage was present and location were known
       
   103         *         KErrPathNotFound, trusted usage was not found or location 
       
   104         *                           was not known
       
   105         *         KErrGeneral, any other error
       
   106         *         KErrNoMemory, No memory
       
   107         * @return void
       
   108         */
       
   109         IMPORT_C void GetExtras( const TDesC8& aKeyId, 
       
   110                                  RCPointerArray<HBufC>& aTrustedUsages,
       
   111                                  TCertLocation& aLocation,
       
   112                                  TRequestStatus& aStatus );
       
   113 
       
   114         /** 
       
   115         * Cancels outgoing GetExtras operation.
       
   116         * After necessary cleanup, caller is signalled with KErrCancel 
       
   117         * @return void
       
   118         */
       
   119         IMPORT_C void CancelGetExtras();
       
   120 
       
   121     private:
       
   122 
       
   123         /**
       
   124         * Symbian constructor
       
   125         */
       
   126         void ConstructL();
       
   127 
       
   128         /**
       
   129         * C++ default constructor.
       
   130         */
       
   131         CWimCert();
       
   132 
       
   133     private: //from CActive
       
   134         
       
   135         /**
       
   136         * Different phases are handled here.
       
   137         * @return void
       
   138         */
       
   139         void RunL();
       
   140 
       
   141         /**
       
   142         * Cancellation function
       
   143         * Deallocates member variables and completes client status with
       
   144         * KErrCancel error code.
       
   145         * @return void
       
   146         */
       
   147         void DoCancel();
       
   148 
       
   149         /**
       
   150         * The active scheduler calls this function if this active 
       
   151         * object's RunL() function leaves. 
       
   152         * Handles necessary cleanup and completes request with
       
   153         * received error code.
       
   154         * @param aError -Error code which launched this event.
       
   155         * @return TInt  Error code to active scheduler, is always KErrNone.
       
   156         */ 
       
   157         TInt RunError( TInt aError );
       
   158         
       
   159     private: // functions
       
   160         
       
   161         /**
       
   162         * Tries to locate certificate by using retrieved KeyId.
       
   163         * @return boolean -If certificate is found and it has extra data, 
       
   164         * @return ETrue. Else return EFalse.
       
   165         */
       
   166         TBool CertificateLocated();
       
   167 
       
   168         /**
       
   169         * Fills caller's data area with requested extra data
       
   170         * @return void
       
   171         */
       
   172         void ExtraDataFoundL();
       
   173 
       
   174         /** 
       
   175         * Handles cleanup for an object which is not derived from CBase
       
   176         * @param aObject -object to be cleaned up
       
   177         * @return void
       
   178         */
       
   179         static void Cleanup( TAny* aObject );
       
   180 
       
   181         /** 
       
   182         * Handles cleanup for an object which is not derived from CBase
       
   183         * @param aObject -object to be cleaned up
       
   184         * @return void
       
   185         */
       
   186         static void CleanupRefLst( TAny* aObject );
       
   187         
       
   188         /**
       
   189         * Deallocates memory from the array.
       
   190         * @return void
       
   191         */
       
   192         void DeallocWimCertInfo();   
       
   193         
       
   194         /**
       
   195         * Sets own iStatus to KRequestPending, and signals it 
       
   196         * with User::RequestComplete() request. This gives chance 
       
   197         * to active scheduler to run other active objects. After a quick
       
   198         * visit in actives cheduler, signal returns to RunL() and starts next
       
   199         * phase of operation. 
       
   200         * @return void
       
   201         */
       
   202         void SignalOwnStatusAndComplete();
       
   203         
       
   204         /** 
       
   205         * Allocates variables when retrieving extra certificate data 
       
   206         * from WimServer.
       
   207         * @return void
       
   208         */
       
   209         void AllocMemoryForExtraDataRetrieveL();
       
   210 
       
   211         /* 
       
   212         * DeAllocates variables after extra data retrieving operation.
       
   213         * @return void
       
   214         */
       
   215         void DeAllocMemoryForExtraDataRetrieve();
       
   216 
       
   217         /* 
       
   218         * DeAllocates member variable RArrays.
       
   219         * @return void
       
   220         */
       
   221         void DeallocRArrays();
       
   222 
       
   223     private: // data
       
   224 
       
   225         /**
       
   226         * Different states of this state machine
       
   227         */
       
   228         enum TPhase
       
   229             {
       
   230             EConnectClientSession,
       
   231             ECreateNewSession,
       
   232             EInitializeWim,
       
   233             EListCertsFromWim,
       
   234             EGetCertClientSession,
       
   235             ELocateCertificate,
       
   236             EGiveExtraData
       
   237             };
       
   238 
       
   239         //Client status is stored here while operation
       
   240         //on the server side is done.
       
   241         TRequestStatus*                 iClientStatus;
       
   242                 
       
   243         //Handle to connection with server. Owned.
       
   244         RWimCertMgmt*                   iConnectionHandle;
       
   245 
       
   246         // Pointer to Client Session. Owned. 
       
   247         // Valid as long as CWimSecModuleMgr is valid.
       
   248         RWimMgmt*                       iClientSession;
       
   249         
       
   250         //Used to handle different phases.
       
   251         TPhase                          iPhase;
       
   252                         
       
   253         //The count of certificates
       
   254         TUint8                          iCertCount;
       
   255         
       
   256         //Buffer, which is used when fetching trustedusage from Server. Owned
       
   257         HBufC*                          iCertHBufTrustedUsageFromServer;
       
   258     
       
   259         //Pointer, which used to point iCertHBufTrustedUsageFromServer. Owned
       
   260         TPtr*                           iCertHBufTrustedUsageFromServerPtr;
       
   261 
       
   262          //Array which is filled with trusted usage strings. Not owned.
       
   263         RCPointerArray<HBufC>*          iTrustedUsages;
       
   264 
       
   265         // Informs the certificate location to caller.
       
   266         // Used when user has called GetExtras
       
   267         TCertLocation*                  iLocation;
       
   268 
       
   269         //The KeyId, which is received from caller. Used when user has called
       
   270         //GetExtras
       
   271         HBufC8*                         iKeyIdToBeMatched;
       
   272         
       
   273         //This tells the index of the certificate, from which we want
       
   274         //the trusted usages taken out.
       
   275         TUint8                          iCertIndex;
       
   276 
       
   277         //Flag to indicate errors during WIM -initialization.
       
   278         TInt                            iWimStartErr;
       
   279 
       
   280         //Array for certificate type. 
       
   281         RArray<TUint>                   iCertTypes;
       
   282 
       
   283         //Array for trusted usage lengths
       
   284         RArray<TUint>                   iTrustedUsageLengths;
       
   285 
       
   286         //Arrray for usages
       
   287         RArray<TUint>                   iUsages;
       
   288 
       
   289         //Array for KeyIds.Owned
       
   290         RArray<HBufC8*>                 iKeyIds;
       
   291 
       
   292         //Used to point right keyId when retrieving extra data
       
   293         TPtr8*                          iKeyIdPointer;
       
   294 
       
   295         //Pointer to HBufC8*. This is used as an array when listing every
       
   296         //certificate from WIM to an array during startup. Owned.
       
   297         PHBufC8*                        iLabel;
       
   298 
       
   299         //Pointer to HBufC8*. This is used as an array when listing every 
       
   300         //certificate from WIM to an array during startup. Owned.
       
   301         PHBufC8*                        iKeyId;
       
   302 
       
   303         //Pointer to HBufC8*. This is used as an array when listing every 
       
   304         //certificate from WIM to an array during startup. Owned.
       
   305         PHBufC8*                        iCAId;
       
   306 
       
   307         //Pointer to HBufC8*. This is used as an array when listing every 
       
   308         //certificate from WIM to an array during startup. Owned.
       
   309         PHBufC8*                        iIssuerHash;
       
   310 
       
   311         //Pointer to iLabel. Also used as an array. Owned.        
       
   312         PTPtr8*                         iLabelPtr;
       
   313 
       
   314         //Pointer to iKeyId. Also used as an array. Owned.        
       
   315         PTPtr8*                         iKeyIdPtr;
       
   316 
       
   317         //Pointer to iCAId. Also used as an array. Owned.        
       
   318         PTPtr8*                         iCAIdPtr;
       
   319 
       
   320         //Pointer to iIssuerHash. Also used as an array. Owned.
       
   321         PTPtr8*                         iIssuerHashPtr;
       
   322     };
       
   323 
       
   324 #endif  // WIMCERT_H
       
   325 
       
   326 // End of File