sysstatemgmt/systemstatemgr/cmd/src/cmdamastarter.cpp
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     1 // Copyright (c) 2007-2009 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 <s32strm.h>
       
    17 #include <barsread2.h>
       
    18 
       
    19 #include "ssmcommandparameters.h"
       
    20 #include <ssm/ssmloadamastart.h>
       
    21 #include "cmdamastarter.h"
       
    22 #include "ssmdebug.h"
       
    23 #include "ssmpanic.h"
       
    24 
       
    25 _LIT( KAmaStartDLL, "loadamastart.dll" );
       
    26 typedef CSsmLoadAmaStart* (*TFuncLoadAmaCreateL)(void);
       
    27 
       
    28 #ifdef SYMBIAN_SSM_FLEXIBLE_MERGE
       
    29 /**
       
    30 Used to create an instance of CCmdAmaStarter class from given parameters.
       
    31 This method is used by SsmCommandFactory to create a command.
       
    32 
       
    33 @param aSeverity The severity of the command
       
    34 @param aExecutionBehaviour Execution behaviour of this command
       
    35 @param aDscId DSC id to start the AMA
       
    36 @param aPriority Priority of the command
       
    37 @return	A pointer to an object of type CCmdAmaStarter.
       
    38 */
       
    39 CCmdAmaStarter* CCmdAmaStarter::NewL(TCmdErrorSeverity aSeverity, TSsmExecutionBehaviour aExecutionBehaviour, TUid aDscId, const TUint16 aPriority)
       
    40 	{
       
    41 	SSMLOGLEAVEIFTRUE(aDscId == KNullUid, KErrArgument);		//aDscId shouldn't be NULL
       
    42 	CCmdAmaStarter* self = new (ELeave) CCmdAmaStarter(aSeverity, aExecutionBehaviour, aDscId, aPriority);
       
    43 	CleanupStack::PushL(self);
       
    44 	self->ConstructL();
       
    45 	CleanupStack::Pop(self);
       
    46 	return self;
       
    47 	}
       
    48 #endif
       
    49 
       
    50 /**
       
    51 Used to create an instance of CCmdAmaStarter class from given parameters.
       
    52 This method is used by SsmCommandFactory to create a command.
       
    53 
       
    54 @param aSeverity The severity of the command
       
    55 @param aExecutionBehaviour Execution behaviour of this command
       
    56 @param aDscId DSC id to start the AMA
       
    57 @return	A pointer to an object of type CCmdAmaStarter.
       
    58 */
       
    59 CCmdAmaStarter* CCmdAmaStarter::NewL(TCmdErrorSeverity aSeverity, TSsmExecutionBehaviour aExecutionBehaviour, TUid aDscId)
       
    60 	{
       
    61 	SSMLOGLEAVEIFTRUE(aDscId == KNullUid, KErrArgument);		//aDscId shouldn't be NULL
       
    62 	CCmdAmaStarter* self = new (ELeave) CCmdAmaStarter(aSeverity, aExecutionBehaviour, aDscId);
       
    63 	CleanupStack::PushL(self);
       
    64 	self->ConstructL();
       
    65 	CleanupStack::Pop(self);
       
    66 	return self;
       
    67 	}
       
    68 
       
    69 /**
       
    70 Used to create an instance of CCmdAmaStarter class from a read stream.
       
    71 CSsmCommandList::InternalizeL() uses this method to construct a command from stream.
       
    72 
       
    73 @param aReadStream Read stream containing data through which object can be created
       
    74 @return	A pointer to an object of type CCmdAmaStarter.
       
    75 */
       
    76 CCmdAmaStarter* CCmdAmaStarter::NewL(RReadStream& aReadStream)
       
    77 	{
       
    78 	CCmdAmaStarter* self = new (ELeave) CCmdAmaStarter();
       
    79 	CleanupStack::PushL(self);
       
    80 	self->ConstructL(aReadStream);
       
    81 	CleanupStack::Pop(self);
       
    82 	return self;
       
    83 	}
       
    84 
       
    85 /**
       
    86 Used to create an instance of CCmdAmaStarter class from resource.
       
    87 
       
    88 @param aCommandParameters Object data from a resource file
       
    89 @return	A pointer to an object of type CCmdAmaStarter.
       
    90 */
       
    91 CCmdAmaStarter* CCmdAmaStarter::NewL(TSsmCommandParameters& aCommandParameters)
       
    92 	{
       
    93 	CCmdAmaStarter* self = new (ELeave) CCmdAmaStarter();
       
    94 	CleanupStack::PushL(self);
       
    95 	self->ConstructL(aCommandParameters);
       
    96 	CleanupStack::Pop(self);
       
    97 	return self;
       
    98 	}
       
    99 
       
   100 /**
       
   101 Used to create an instance of CCmdAmaStarter class from CCmdAmaStarter object
       
   102 Must be used only by CLE
       
   103 @param aCmdAmaStarter CCmdAmaStarter reference
       
   104 @return A pointer to an object of type CCmdAmaStarter.
       
   105 */
       
   106 CCmdAmaStarter* CCmdAmaStarter::NewLC(const CCmdAmaStarter& aCmdAmaStarter)
       
   107     {
       
   108 #ifdef SYMBIAN_SSM_FLEXIBLE_MERGE
       
   109     CCmdAmaStarter* self = new (ELeave) CCmdAmaStarter(aCmdAmaStarter.Severity(),aCmdAmaStarter.ExecutionBehaviour(),
       
   110                                                        aCmdAmaStarter.DscId(),aCmdAmaStarter.Priority());
       
   111 #else
       
   112     CCmdAmaStarter* self = new (ELeave) CCmdAmaStarter(aCmdAmaStarter.Severity(),aCmdAmaStarter.ExecutionBehaviour(),
       
   113                                                            aCmdAmaStarter.DscId());
       
   114 #endif
       
   115     CleanupStack::PushL(self);
       
   116     self->ConstructL(aCmdAmaStarter);
       
   117     return self;
       
   118     }
       
   119 
       
   120 void CCmdAmaStarter::ConstructL(const CCmdAmaStarter& aCmdAmaStarter)
       
   121     {
       
   122     iConditionalResourceId = aCmdAmaStarter.ConditionalInformation();
       
   123 #ifdef SYMBIAN_SSM_FLEXIBLE_MERGE
       
   124 	if (iConditionalResourceId != 0)
       
   125 	    {
       
   126 	    SetCommandResourceFileNameL(aCmdAmaStarter.GetCommandResourceFileName());
       
   127 	    }
       
   128 #endif    
       
   129     }
       
   130 /**
       
   131 Returns the version of the BIC
       
   132 @return The version of BIC
       
   133 */
       
   134 TInt CCmdAmaStarter::MaxSupportedVersion()
       
   135 	{
       
   136 #ifdef SYMBIAN_SSM_FLEXIBLE_MERGE
       
   137 	return (static_cast<TInt>(ECmdAmaStarterVersionWithPriority));
       
   138 #else
       
   139 	return (static_cast<TInt>(ECmdAmaStarterInitialVersion));
       
   140 #endif
       
   141 	}
       
   142 
       
   143 /**
       
   144 Destructor
       
   145 */
       
   146 CCmdAmaStarter::~CCmdAmaStarter()
       
   147 	{
       
   148 	Cancel();
       
   149 	delete iAmaStart;
       
   150 	iAmaStartLib.Close();
       
   151 	}
       
   152 
       
   153 /**
       
   154 Execute this command
       
   155 @param aStatus 	The TRequestStatus which is completed when value is set either 
       
   156 				with KErrNone or with error value.
       
   157 */
       
   158 void CCmdAmaStarter::Execute(TRequestStatus& aStatus)
       
   159 	{
       
   160 	aStatus = KRequestPending;
       
   161 	iExecuteRequest = &aStatus;
       
   162 	DEBUGPRINT3(_L("Starting AMA with DSC Id = 0x%x and execution behaviour = %d"), iDscId.iUid, iExecutionBehaviour);
       
   163 	if (iExecutionBehaviour != ESsmWaitForSignal)
       
   164 		{
       
   165 		// complete the command request and initiate execution of next command
       
   166 		CompleteExecuteRequest(KErrNone);
       
   167 		}
       
   168 
       
   169 	TRAPD(err, LoadAmaStartLibraryL());
       
   170 	if(KErrNone != err)
       
   171 		{
       
   172 		// complete the command request with error
       
   173 		CompleteDeferredExecuteRequest(err);
       
   174 		return;
       
   175 		}
       
   176 	SetActive();
       
   177 	iAmaStart->Start(iDscId, iStatus);
       
   178 	}
       
   179 
       
   180 /**
       
   181 Load loadamastart.dll
       
   182 */
       
   183 void CCmdAmaStarter::LoadAmaStartLibraryL()
       
   184 	{
       
   185 	SSMLOGLEAVEIFERROR(iAmaStartLib.Load(KAmaStartDLL));
       
   186 	TFuncLoadAmaCreateL amaStart = reinterpret_cast<TFuncLoadAmaCreateL>(iAmaStartLib.Lookup(1));
       
   187 	SSMLOGLEAVEIFTRUE(amaStart == NULL, KErrArgument);
       
   188 	iAmaStart = amaStart();
       
   189 	SSMLOGLEAVEIFNULL(iAmaStart);
       
   190 	}
       
   191 
       
   192 /**
       
   193 Releases resources associated with this BIC
       
   194 */
       
   195 void CCmdAmaStarter::Release()
       
   196 	{
       
   197 	delete this;
       
   198 	}
       
   199 
       
   200 /**
       
   201 Cancels the BIC
       
   202 */
       
   203 void CCmdAmaStarter::ExecuteCancel()
       
   204 	{
       
   205 	//cancel the outstanding request
       
   206 	Cancel();
       
   207 	//and complete the request with KErrCancel
       
   208 	CompleteDeferredExecuteRequest(KErrCancel);
       
   209 	}
       
   210 
       
   211 /**
       
   212 Returns the type of the BIC
       
   213 @return Type of BIC
       
   214 */
       
   215 TSsmCommandType CCmdAmaStarter::Type() const
       
   216 	{
       
   217 	return (ESsmCmdAMAStarter);
       
   218 	}
       
   219 
       
   220 /**
       
   221 Externalises the configuration of the BIC
       
   222 
       
   223 @param aWriteStream A write stream to write BIC data to
       
   224 */
       
   225 void CCmdAmaStarter::ExternalizeL(RWriteStream& aWriteStream) const
       
   226 	{
       
   227 	aWriteStream.WriteInt16L(iSeverity);
       
   228 	aWriteStream.WriteUint8L(iExecutionBehaviour);
       
   229 	aWriteStream.WriteUint32L(iDscId.iUid);
       
   230 #ifdef SYMBIAN_SSM_FLEXIBLE_MERGE
       
   231 	aWriteStream.WriteUint16L(iPriority);
       
   232 #endif
       
   233 	}
       
   234 
       
   235 /**
       
   236 Handles command's request completion event.
       
   237 */
       
   238 void CCmdAmaStarter::RunL()
       
   239 	{
       
   240 	CompleteDeferredExecuteRequest(iStatus.Int());
       
   241 	}
       
   242 
       
   243 /**
       
   244 cancellation of an outstanding request.
       
   245 */
       
   246 void CCmdAmaStarter::DoCancel()
       
   247 	{
       
   248 	iAmaStart->StartCancel();
       
   249 	}
       
   250 
       
   251 /**
       
   252 Complete the command request with aError. It gets called when RunL leaves.
       
   253 
       
   254 @param aError Error code with which RunL has left.
       
   255 @return KErrNone as error is handled in this function.
       
   256 */
       
   257 TInt CCmdAmaStarter::RunError(TInt aError)
       
   258 	{
       
   259 	DEBUGPRINT2A("CCmdAmaStarter::RunError called with error %d", aError);
       
   260 	CompleteDeferredExecuteRequest(aError);
       
   261 	return KErrNone;
       
   262 	}
       
   263 
       
   264 #ifdef SYMBIAN_SSM_FLEXIBLE_MERGE
       
   265 /**
       
   266 Overloaded constructor
       
   267 
       
   268 @param aSeverity 	The severity of the command
       
   269 @param aExecutionBehaviour Execution behaviour for this command
       
   270 @param aDscId DSC id to start the AMA
       
   271 @param aPriority Indicating the priority of the command
       
   272 */	
       
   273 CCmdAmaStarter::CCmdAmaStarter(TCmdErrorSeverity aSeverity, TSsmExecutionBehaviour aExecutionBehaviour, const TUid& aDscId, const TUint16 aPriority)
       
   274 	:CSsmDeferrableCommand(aSeverity, aExecutionBehaviour, aPriority), iDscId(aDscId)
       
   275 	{
       
   276 	}
       
   277 #endif
       
   278 
       
   279 /**
       
   280 Overloaded constructor
       
   281 
       
   282 @param aSeverity 	The severity of the command
       
   283 @param aExecutionBehaviour Execution behaviour for this command
       
   284 @param aDscId DSC id to start the AMA
       
   285 */	
       
   286 CCmdAmaStarter::CCmdAmaStarter(TCmdErrorSeverity aSeverity, TSsmExecutionBehaviour aExecutionBehaviour, const TUid& aDscId)
       
   287 	:CSsmDeferrableCommand(aSeverity, aExecutionBehaviour), iDscId(aDscId)
       
   288 	{
       
   289 	}
       
   290 
       
   291 /**
       
   292  Default constructor.
       
   293  */
       
   294 CCmdAmaStarter::CCmdAmaStarter()
       
   295 	{
       
   296 	}
       
   297 
       
   298 /**
       
   299 Constructs the object through read stream.
       
   300 @param aReadStream A read stream containing BIC data
       
   301 */
       
   302 void CCmdAmaStarter::ConstructL(RReadStream& aReadStream)
       
   303 	{
       
   304 	InternalizeL(aReadStream);
       
   305 	ConstructL();	//validate the commands data
       
   306 	}
       
   307 
       
   308 /**
       
   309 Constructs an object from resource file.
       
   310 
       
   311 @param aCommandParameters Object data from a resource file
       
   312 */
       
   313 void CCmdAmaStarter::ConstructL(TSsmCommandParameters& aCommandParameters)
       
   314 	{
       
   315 	RResourceReader& reader = aCommandParameters.MainReader();
       
   316 	const TSsmCommandType type = static_cast<TSsmCommandType>(reader.ReadInt16L());
       
   317 	SSMLOGLEAVEIFFALSE(type == Type(), KErrNotSupported);
       
   318 	const TInt version = reader.ReadInt16L();
       
   319 	SSMLOGLEAVEIFFALSE(__COMPARE_VERSION(version, CCmdAmaStarter::MaxSupportedVersion()), KErrNotSupported);
       
   320 	iSeverity = static_cast<TCmdErrorSeverity>(reader.ReadInt16L());
       
   321 	iExecutionBehaviour = static_cast<TSsmExecutionBehaviour>(reader.ReadUint8L());
       
   322 	iDscId.iUid = reader.ReadUint32L();
       
   323 #ifdef SYMBIAN_SSM_FLEXIBLE_MERGE
       
   324 	iPriority = (version > ECmdAmaStarterInitialVersion) ? reader.ReadUint16L() : KDefaultCommandPriority;
       
   325 #endif
       
   326 	ConstructL();	//validate the commands data
       
   327 	}
       
   328 	
       
   329 /**
       
   330 Validate data.
       
   331 */
       
   332 void CCmdAmaStarter::ConstructL()
       
   333 	{
       
   334 	ValidateL();
       
   335 	}
       
   336 
       
   337 /**
       
   338 Configures the BIC using data contained in a ReadStream
       
   339  
       
   340 @param aReadStream 	A read stream containing BIC data
       
   341 */
       
   342 void CCmdAmaStarter::InternalizeL(RReadStream& aReadStream)
       
   343 	{
       
   344 	iSeverity = static_cast<TCmdErrorSeverity>(aReadStream.ReadInt16L());
       
   345 	iExecutionBehaviour = static_cast<TSsmExecutionBehaviour>(aReadStream.ReadUint8L());
       
   346 	iDscId.iUid = aReadStream.ReadUint32L();
       
   347 #ifdef SYMBIAN_SSM_FLEXIBLE_MERGE
       
   348 	iPriority = aReadStream.ReadUint16L();
       
   349 #endif	
       
   350 	}
       
   351 
       
   352 /**
       
   353 Validate commands data
       
   354 */
       
   355 void CCmdAmaStarter::ValidateL()
       
   356 	{
       
   357 	CSsmDeferrableCommand::ValidateL();
       
   358 	SSMLOGLEAVEIFTRUE(iDscId == KNullUid, KErrArgument);		//iDscId shouldn't be NULL
       
   359 	}