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/**
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This file is part of CWRT package **
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Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). **
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU (Lesser) General Public License as
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published by the Free Software Foundation, version 2.1 of the License.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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(Lesser) General Public License for more details. You should have
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received a copy of the GNU (Lesser) General Public License along
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with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <e32base.h>
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#include <e32cmn.h>
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#include "serviceipcsymbian_p.h"
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namespace WRT
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{
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const TInt KIPCOperation = 0;
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const TInt KIPCGetBuffer = 1;
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const TInt KServerMajorVersionNumber = 1;
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const TInt KServerMinorVersionNumber = 0;
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const TInt KServerBuildVersionNumber = 0;
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/*!
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\class CServiceSymbianIPC
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Symbian Client backend for the service IPC
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*/
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/*!
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Constructor
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*/
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CServiceSymbianIPC::CServiceSymbianIPC() :
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CActive(CActive::EPriorityStandard), iDataSize(0)
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{
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CActiveScheduler::Add(this);
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}
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/*!
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Destructor
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*/
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CServiceSymbianIPC::~CServiceSymbianIPC()
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{
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Cancel();
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if (iSession.Handle()) {
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iSession.Close();
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}
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delete iAsyncData;
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delete iRequestData;
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}
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/*!
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2nd phased constructor
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*/
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void CServiceSymbianIPC::ConstructL()
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{
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}
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/*!
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Two Phased Constructor
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*/
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CServiceSymbianIPC* CServiceSymbianIPC::NewL()
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{
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CServiceSymbianIPC* self = new (ELeave) CServiceSymbianIPC();
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CleanupStack::PushL(self);
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self->ConstructL();
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CleanupStack::Pop(self);
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return self;
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}
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/*!
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Connect to the server
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@param aServerName name of the server to connect to
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@return true if connected, false if not
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*/
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bool CServiceSymbianIPC::connect(const QString& aServerName)
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{
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// Version informaton
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TVersion version(KServerMajorVersionNumber,
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KServerMinorVersionNumber,
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KServerBuildVersionNumber);
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TPtrC serverName(reinterpret_cast<const TUint16*> (aServerName.utf16()));
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TInt err = iSession.Connect(serverName, version);
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return (err == KErrNone);
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}
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/*!
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Disconnect from the server
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*/
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void CServiceSymbianIPC::disconnect()
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{
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iSession.Close();
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}
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/*!
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Starts the service
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@param aServerName server name
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@param aExeName server executable name
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*/
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bool CServiceSymbianIPC::startServer(const QString& /*aServerName*/,
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const QString& aExeName)
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{
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TPtrC serverName(reinterpret_cast<const TUint16*> (aExeName.utf16()));
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TInt err = iSession.StartServer(serverName);
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return (err == KErrNone);
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}
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/*!
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Send a request synchronously
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@param aRequestType type of request to send to the server
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@param aData data to send to the server
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*/
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bool CServiceSymbianIPC::sendSync(const QString& aRequestType,
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const QByteArray& aData)
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{
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// Convert from QString to TPtr
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TPtrC request(reinterpret_cast<const TUint16*> (aRequestType.utf16()));
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TPtrC8 data(reinterpret_cast<const TUint8*> (aData.constData()), aData.length());
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// Send data, 0 is new op
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TInt err;
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TInt dataSize = 0;
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TIpcArgs args(&request, &data);
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TRAP( err, dataSize = iSession.SendReceiveL(KIPCOperation,args) );
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// map return value
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if (err == KErrNone) {
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iDataSize = dataSize;
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}
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return (err == KErrNone);
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}
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/*!
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Send a request asynchronously
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@param aRequestType type of request to send to the server
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@param aData data to send to the server
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*/
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void CServiceSymbianIPC::sendAsync(const QString& aRequestType,
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const QByteArray& aData)
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{
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delete iRequestData;
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iRequestData = NULL;
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TPtrC request(reinterpret_cast<const TUint16*> (aRequestType.utf16()));
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iRequestData = request.Alloc();
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delete iAsyncData;
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iAsyncData = NULL;
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TPtrC8 data(reinterpret_cast<const TUint8*> (aData.constData()), aData.length());
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iAsyncData = data.Alloc();
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// Send data
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iRequestDataPtr.Set(*iRequestData);
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iAsyncDataPtr.Set(*iAsyncData);
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TIpcArgs args(&iRequestDataPtr, &iAsyncDataPtr);
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iSession.SendReceive(KIPCOperation, args, iStatus);
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SetActive();
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}
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/*!
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Reads all data pending in the buffer
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@return QByteArray containing the result data
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*/
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QByteArray CServiceSymbianIPC::readAll()
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{
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QByteArray rtn;
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TRAP_IGNORE( rtn = doReadAllL() );
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return rtn;
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}
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/*!
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Reads all data pending in the buffer, leaves if an error occurred
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@return QByteArray containing the result data
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*/
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QByteArray CServiceSymbianIPC::doReadAllL()
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{
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// Read the data via IPC
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//
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CBufBase* buf = CBufFlat::NewL(iDataSize);
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CleanupStack::PushL(buf);
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buf->ResizeL(iDataSize);
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TPtr8 ptr(buf->Ptr(0));
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iSession.SendReceiveL(KIPCGetBuffer, TIpcArgs(&ptr));
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QByteArray convert((char *)ptr.Ptr(), ptr.Length());
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CleanupStack::PopAndDestroy(buf);
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// Deep copy, return variable is implicitly shared
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return convert;
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}
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/*!
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Maps error codes from Symbian error codes to Service IPC error codes
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@param aError Symbian error code
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@return mapped error code
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*/
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int CServiceSymbianIPC::doMapErrors(TInt aError)
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{
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int error(0);
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switch (aError) {
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case KErrNone: {
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error = 0;
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break;
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}
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case KErrPermissionDenied:
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case KErrServerTerminated: {
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error = ServiceFwIPC::EConnectionClosed;
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break;
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}
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case KErrServerBusy: {
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error = ServiceFwIPC::EConnectionError;
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break;
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}
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case KErrArgument:
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case KErrNoMemory: {
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error = ServiceFwIPC::EIPCError;
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break;
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}
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default: {
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error = ServiceFwIPC::EUnknownError;
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break;
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}
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}
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return error;
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}
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/*!
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Waits until data is available for reading
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@return bool always true, no need to wait
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*/
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bool CServiceSymbianIPC::waitForRead()
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{
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// Symbian Client-server is blocking, so no need to wait for read
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return true;
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}
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/*!
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Active object callback
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*/
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void CServiceSymbianIPC::RunL()
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{
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TInt err = iStatus.Int();
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// Callback to observers
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//
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if (err >= KErrNone) {
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iDataSize = err;
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emitReadyRead();
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} else {
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emitError(doMapErrors(err));
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}
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// Cleanup async request, no need to delete if client re-requested an async op
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if( !asyncPending() ) {
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delete iRequestData;
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iRequestData = NULL;
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delete iAsyncData;
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iAsyncData = NULL;
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iRequestDataPtr.Set(KNullDesC);
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iAsyncDataPtr.Set(KNullDesC8);
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}
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}
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/*!
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Active object cancel
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*/
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void CServiceSymbianIPC::DoCancel()
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{
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// We can't cancel in the IPC design.
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TRequestStatus* status = &iStatus;
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User::RequestComplete(status, KErrCancel);
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}
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}
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// END OF FILE
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