xref: /trunk/main/io/source/acceptor/acceptor.cxx (revision 032611ff)

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 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_io.hxx"
#include <osl/mutex.hxx>

#include <uno/mapping.hxx>

#include <cppuhelper/factory.hxx>
#include <cppuhelper/implbase2.hxx>
#include <cppuhelper/implementationentry.hxx>
#include "cppuhelper/unourl.hxx"
#include "rtl/malformeduriexception.hxx"

#include <com/sun/star/connection/XAcceptor.hpp>
#include <com/sun/star/lang/XServiceInfo.hpp>

#include "acceptor.hxx"

#define IMPLEMENTATION_NAME "com.sun.star.comp.io.Acceptor"
#define SERVICE_NAME "com.sun.star.connection.Acceptor"

using namespace ::osl;
using namespace ::rtl;
using namespace ::cppu;
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::lang;
using namespace ::com::sun::star::registry;
using namespace ::com::sun::star::connection;

namespace io_acceptor
{
	rtl_StandardModuleCount g_moduleCount = MODULE_COUNT_INIT;

	class OAcceptor : public WeakImplHelper2< XAcceptor, XServiceInfo >
	{
	public:
		OAcceptor(const Reference< XComponentContext > & xCtx);
		virtual ~OAcceptor();
	public:
		// Methods
		virtual Reference< XConnection > SAL_CALL accept( const OUString& sConnectionDescription )
			throw( AlreadyAcceptingException,
				   ConnectionSetupException,
				   IllegalArgumentException,
				   RuntimeException);
		virtual void SAL_CALL stopAccepting(  ) throw( RuntimeException);

	public: // XServiceInfo
                virtual OUString              SAL_CALL getImplementationName() throw();
                virtual Sequence< OUString >  SAL_CALL getSupportedServiceNames(void) throw();
                virtual sal_Bool              SAL_CALL supportsService(const OUString& ServiceName) throw();

	private:
		PipeAcceptor *m_pPipe;
		SocketAcceptor *m_pSocket;
		Mutex m_mutex;
		OUString m_sLastDescription;
		sal_Bool m_bInAccept;

		Reference< XMultiComponentFactory > _xSMgr;
		Reference< XComponentContext > _xCtx;
		Reference<XAcceptor>         _xAcceptor;
	};


	OAcceptor::OAcceptor( const Reference< XComponentContext > & xCtx )
		: m_pPipe( 0 )
		, m_pSocket( 0 )
		, m_bInAccept( sal_False )
		, _xSMgr( xCtx->getServiceManager() )
		, _xCtx( xCtx )
	{
		g_moduleCount.modCnt.acquire( &g_moduleCount.modCnt );
	}

	OAcceptor::~OAcceptor()
	{
		if( m_pPipe )
		{
			delete m_pPipe;
		}
		if( m_pSocket )
		{
			delete m_pSocket;
		}
		g_moduleCount.modCnt.release( &g_moduleCount.modCnt );
	}

	struct BeingInAccept
	{
		BeingInAccept( sal_Bool *pFlag,const OUString & sConnectionDescription  ) throw( AlreadyAcceptingException)
			: m_pFlag( pFlag )
			{
  				if( *m_pFlag )
  				{
  					OUString sMessage( RTL_CONSTASCII_USTRINGPARAM( "AlreadyAcceptingException :" ) );
  					sMessage += sConnectionDescription;
  					throw AlreadyAcceptingException( sMessage , Reference< XInterface > () );
  				}
  				*m_pFlag = sal_True;
			}
		~BeingInAccept()
			{
				*m_pFlag = sal_False;
			}
		sal_Bool *m_pFlag;
	};

	Reference< XConnection > OAcceptor::accept( const OUString &sConnectionDescription )
		throw( AlreadyAcceptingException,
			   ConnectionSetupException,
			   IllegalArgumentException,
			   RuntimeException)
	{
		OSL_TRACE(
            "acceptor %s\n",
            OUStringToOString(
                sConnectionDescription, RTL_TEXTENCODING_ASCII_US).getStr());
		// if there is a thread alread accepting in this object, throw an exception.
		struct BeingInAccept guard( &m_bInAccept, sConnectionDescription );

		Reference< XConnection > r;
		if( m_sLastDescription.getLength() &&
			m_sLastDescription != sConnectionDescription )
		{
			// instantiate another acceptor for different ports
			OUString sMessage = OUString( RTL_CONSTASCII_USTRINGPARAM(
				"acceptor::accept called multiple times with different conncetion strings\n" ) );
			throw ConnectionSetupException( sMessage, Reference< XInterface > () );
		}

		if( ! m_sLastDescription.getLength() )
        {
			// setup the acceptor
            try
            {
                cppu::UnoUrlDescriptor aDesc(sConnectionDescription);
                if (aDesc.getName().equalsAsciiL(
                        RTL_CONSTASCII_STRINGPARAM("pipe")))
                {
                    rtl::OUString aName(
                        aDesc.getParameter(
                            rtl::OUString(RTL_CONSTASCII_USTRINGPARAM(
                                              "name"))));

                    m_pPipe = new PipeAcceptor(aName, sConnectionDescription);

                    try
                    {
                        m_pPipe->init();
                    }
                    catch( ... )
                    {
                        {
                            MutexGuard g( m_mutex );
                            delete m_pPipe;
                            m_pPipe = 0;
                        }
                        throw;
                    }
                }
                else if (aDesc.getName().equalsAsciiL(
                             RTL_CONSTASCII_STRINGPARAM("socket")))
                {
                    rtl::OUString aHost;
                    if (aDesc.hasParameter(
                            rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("host"))))
                        aHost = aDesc.getParameter(
                            rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("host")));
                    else
                        aHost = rtl::OUString(RTL_CONSTASCII_USTRINGPARAM(
                                                  "localhost"));
                    sal_uInt16 nPort = static_cast< sal_uInt16 >(
                        aDesc.getParameter(
                            rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("port"))).
                        toInt32());
                    bool bTcpNoDelay
                        = aDesc.getParameter(
                            rtl::OUString(RTL_CONSTASCII_USTRINGPARAM(
                                              "tcpnodelay"))).toInt32() != 0;

                    m_pSocket = new SocketAcceptor(
                        aHost, nPort, bTcpNoDelay, sConnectionDescription);

                    try
                    {
                        m_pSocket->init();
                    }
                    catch( ... )
                    {
                        {
                            MutexGuard g( m_mutex );
                            delete m_pSocket;
                            m_pSocket = 0;
                        }
                        throw;
                    }
                }
                else
                {
                    OUString delegatee = OUString(RTL_CONSTASCII_USTRINGPARAM("com.sun.star.connection.Acceptor."));
                    delegatee += aDesc.getName();

                    OSL_TRACE(
                        "trying to get service %s\n",
                        OUStringToOString(
                            delegatee, RTL_TEXTENCODING_ASCII_US).getStr());
                    _xAcceptor = Reference<XAcceptor>(
                        _xSMgr->createInstanceWithContext(delegatee, _xCtx), UNO_QUERY);

                    if(!_xAcceptor.is())
                    {
                        OUString message(RTL_CONSTASCII_USTRINGPARAM("Acceptor: unknown delegatee "));
                        message += delegatee;

                        throw ConnectionSetupException(message, Reference<XInterface>());
                    }
                }
            }
            catch (rtl::MalformedUriException & rEx)
            {
                throw IllegalArgumentException(
                    rEx.getMessage(),
                    Reference< XInterface > (),
                    0 );
            }
            m_sLastDescription = sConnectionDescription;
		}

		if( m_pPipe )
		{
			r = m_pPipe->accept();
		}
		else if( m_pSocket )
		{
			r = m_pSocket->accept();
		}
		else
		{
			r = _xAcceptor->accept(sConnectionDescription);
		}

		return r;
	}

	void SAL_CALL OAcceptor::stopAccepting(  ) throw( RuntimeException)
	{
		MutexGuard guard( m_mutex );

		if( m_pPipe )
		{
			m_pPipe->stopAccepting();
		}
		else if ( m_pSocket )
		{
			m_pSocket->stopAccepting();
		}
		else if( _xAcceptor.is() )
		{
			_xAcceptor->stopAccepting();
		}

	}

	OUString acceptor_getImplementationName()
	{
		return OUString( RTL_CONSTASCII_USTRINGPARAM( IMPLEMENTATION_NAME ) );
	}

	Reference< XInterface > SAL_CALL acceptor_CreateInstance( const Reference< XComponentContext > & xCtx)
	{
		return Reference < XInterface >( ( OWeakObject * ) new OAcceptor(xCtx) );
	}

	Sequence< OUString > acceptor_getSupportedServiceNames()
	{
		static Sequence < OUString > *pNames = 0;
		if( ! pNames )
		{
			MutexGuard guard( Mutex::getGlobalMutex() );
			if( !pNames )
			{
				static Sequence< OUString > seqNames(1);
				seqNames.getArray()[0] = OUString::createFromAscii( SERVICE_NAME );
				pNames = &seqNames;
			}
		}
		return *pNames;
	}

        OUString OAcceptor::getImplementationName() throw()
	{
		return acceptor_getImplementationName();
	}

        sal_Bool OAcceptor::supportsService(const OUString& ServiceName) throw()
	{
		Sequence< OUString > aSNL = getSupportedServiceNames();
		const OUString * pArray = aSNL.getConstArray();

		for( sal_Int32 i = 0; i < aSNL.getLength(); i++ )
			if( pArray[i] == ServiceName )
				return sal_True;

		return sal_False;
	}

        Sequence< OUString > OAcceptor::getSupportedServiceNames(void) throw()
	{
		return acceptor_getSupportedServiceNames();
	}


}

using namespace io_acceptor;

static struct ImplementationEntry g_entries[] =
{
	{
		acceptor_CreateInstance, acceptor_getImplementationName ,
		acceptor_getSupportedServiceNames, createSingleComponentFactory ,
		&g_moduleCount.modCnt , 0
	},
	{ 0, 0, 0, 0, 0, 0 }
};

extern "C"
{

SAL_DLLPUBLIC_EXPORT sal_Bool SAL_CALL component_canUnload( TimeValue *pTime )
{
	return g_moduleCount.canUnload( &g_moduleCount , pTime );
}

//==================================================================================================
SAL_DLLPUBLIC_EXPORT void SAL_CALL component_getImplementationEnvironment(
	const sal_Char ** ppEnvTypeName, uno_Environment ** )
{
	*ppEnvTypeName = CPPU_CURRENT_LANGUAGE_BINDING_NAME;
}
//==================================================================================================
SAL_DLLPUBLIC_EXPORT void * SAL_CALL component_getFactory(
	const sal_Char * pImplName, void * pServiceManager, void * pRegistryKey )
{
	return component_getFactoryHelper( pImplName, pServiceManager, pRegistryKey , g_entries );
}
}