io/source/acceptor/acceptor.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <osl/mutex.hxx>
  21
  22 #include <cppuhelper/implbase.hxx>
  23 #include <cppuhelper/supportsservice.hxx>
  24 #include <cppuhelper/unourl.hxx>
  25 #include <rtl/malformeduriexception.hxx>
  26
  27 #include <com/sun/star/connection/AlreadyAcceptingException.hpp>
  28 #include <com/sun/star/connection/ConnectionSetupException.hpp>
  29 #include <com/sun/star/connection/XAcceptor.hpp>
  30 #include <com/sun/star/lang/IllegalArgumentException.hpp>
  31 #include <com/sun/star/lang/XServiceInfo.hpp>
  32 #include <com/sun/star/uno/XComponentContext.hpp>
  33
  34 #include <services.hxx>
  35 #include "acceptor.hxx"
  36 #include <memory>
  37
  38 #define IMPLEMENTATION_NAME "com.sun.star.comp.io.Acceptor"
  39 #define SERVICE_NAME "com.sun.star.connection.Acceptor"
  40
  41 using namespace ::osl;
  42 using namespace ::cppu;
  43 using namespace ::com::sun::star::uno;
  44 using namespace ::com::sun::star::lang;
  45 using namespace ::com::sun::star::connection;
  46
  47 namespace io_acceptor
  48 {
  49     class OAcceptor : public WeakImplHelper< XAcceptor, XServiceInfo >
  50     {
  51     public:
  52         explicit OAcceptor(const Reference< XComponentContext > & xCtx);
  53         virtual ~OAcceptor() override;
  54     public:
  55         // Methods
  56         virtual Reference< XConnection > SAL_CALL accept( const OUString& sConnectionDescription ) override;
  57         virtual void SAL_CALL stopAccepting(  ) override;
  58
  59     public: // XServiceInfo
  60                 virtual OUString              SAL_CALL getImplementationName() override;
  61                 virtual Sequence< OUString >  SAL_CALL getSupportedServiceNames() override;
  62                 virtual sal_Bool              SAL_CALL supportsService(const OUString& ServiceName) override;
  63
  64     private:
  65         std::unique_ptr<PipeAcceptor> m_pPipe;
  66         std::unique_ptr<SocketAcceptor> m_pSocket;
  67         Mutex m_mutex;
  68         OUString m_sLastDescription;
  69         bool m_bInAccept;
  70
  71         Reference< XMultiComponentFactory > _xSMgr;
  72         Reference< XComponentContext > _xCtx;
  73         Reference<XAcceptor>         _xAcceptor;
  74     };
  75
  76
  77     OAcceptor::OAcceptor( const Reference< XComponentContext > & xCtx )
  78         : m_bInAccept( false )
  79         , _xSMgr( xCtx->getServiceManager() )
  80         , _xCtx( xCtx )
  81     {}
  82
  83     OAcceptor::~OAcceptor()
  84     {
  85         m_pPipe.reset();
  86     }
  87
  88     struct BeingInAccept
  89     {
  90         /// @throws AlreadyAcceptingException
  91         BeingInAccept( bool *pFlag,const OUString & sConnectionDescription  )
  92             : m_pFlag( pFlag )
  93             {
  94                   if( *m_pFlag )
  95                       throw AlreadyAcceptingException( "AlreadyAcceptingException :" + sConnectionDescription );
  96                   *m_pFlag = true;
  97             }
  98         ~BeingInAccept()
  99             {
 100                 *m_pFlag = false;
 101             }
 102         bool *m_pFlag;
 103     };
 104
 105     Reference< XConnection > OAcceptor::accept( const OUString &sConnectionDescription )
 106     {
 107         // if there is a thread already accepting in this object, throw an exception.
 108         struct BeingInAccept guard( &m_bInAccept, sConnectionDescription );
 109
 110         Reference< XConnection > r;
 111         if( !m_sLastDescription.isEmpty() &&
 112             m_sLastDescription != sConnectionDescription )
 113         {
 114             // instantiate another acceptor for different ports
 115             OUString sMessage = "acceptor::accept called multiple times with different connection strings\n";
 116             throw ConnectionSetupException( sMessage );
 117         }
 118
 119         if( m_sLastDescription.isEmpty() )
 120         {
 121             // setup the acceptor
 122             try
 123             {
 124                 cppu::UnoUrlDescriptor aDesc(sConnectionDescription);
 125                 if ( aDesc.getName() == "pipe" )
 126                 {
 127                     OUString aName(
 128                         aDesc.getParameter(
 129                             "name"));
 130
 131                     m_pPipe.reset(new PipeAcceptor(aName, sConnectionDescription));
 132
 133                     try
 134                     {
 135                         m_pPipe->init();
 136                     }
 137                     catch( ... )
 138                     {
 139                         {
 140                             MutexGuard g( m_mutex );
 141                             m_pPipe.reset();
 142                         }
 143                         throw;
 144                     }
 145                 }
 146                 else if ( aDesc.getName() == "socket" )
 147                 {
 148                     OUString aHost;
 149                     if (aDesc.hasParameter(
 150                             "host"))
 151                         aHost = aDesc.getParameter(
 152                             "host");
 153                     else
 154                         aHost = "localhost";
 155                     sal_uInt16 nPort = static_cast< sal_uInt16 >(
 156                         aDesc.getParameter(
 157                             "port").
 158                         toInt32());
 159                     bool bTcpNoDelay
 160                         = aDesc.getParameter(
 161                             "tcpnodelay").toInt32() != 0;
 162
 163                     m_pSocket.reset(new SocketAcceptor(
 164                         aHost, nPort, bTcpNoDelay, sConnectionDescription));
 165
 166                     try
 167                     {
 168                         m_pSocket->init();
 169                     }
 170                     catch( ... )
 171                     {
 172                         {
 173                             MutexGuard g( m_mutex );
 174                             m_pSocket.reset();
 175                         }
 176                         throw;
 177                     }
 178                 }
 179                 else
 180                 {
 181                     OUString delegatee = "com.sun.star.connection.Acceptor." + aDesc.getName();
 182                     _xAcceptor.set(_xSMgr->createInstanceWithContext(delegatee, _xCtx), UNO_QUERY);
 183
 184                     if(!_xAcceptor.is())
 185                         throw ConnectionSetupException("Acceptor: unknown delegatee " + delegatee);
 186                 }
 187             }
 188             catch (const rtl::MalformedUriException & rEx)
 189             {
 190                 throw IllegalArgumentException(
 191                     rEx.getMessage(),
 192                     Reference< XInterface > (),
 193                     0 );
 194             }
 195             m_sLastDescription = sConnectionDescription;
 196         }
 197
 198         if( m_pPipe )
 199         {
 200             r = m_pPipe->accept();
 201         }
 202         else if( m_pSocket )
 203         {
 204             r = m_pSocket->accept();
 205         }
 206         else
 207         {
 208             r = _xAcceptor->accept(sConnectionDescription);
 209         }
 210
 211         return r;
 212     }
 213
 214     void SAL_CALL OAcceptor::stopAccepting(  )
 215     {
 216         MutexGuard guard( m_mutex );
 217
 218         if( m_pPipe )
 219         {
 220             m_pPipe->stopAccepting();
 221         }
 222         else if ( m_pSocket )
 223         {
 224             m_pSocket->stopAccepting();
 225         }
 226         else if( _xAcceptor.is() )
 227         {
 228             _xAcceptor->stopAccepting();
 229         }
 230
 231     }
 232
 233     OUString acceptor_getImplementationName()
 234     {
 235         return IMPLEMENTATION_NAME;
 236     }
 237
 238     Reference< XInterface > acceptor_CreateInstance( const Reference< XComponentContext > & xCtx)
 239     {
 240         return Reference < XInterface >( static_cast<OWeakObject *>(new OAcceptor(xCtx)) );
 241     }
 242
 243     Sequence< OUString > acceptor_getSupportedServiceNames()
 244     {
 245         Sequence< OUString > seqNames { SERVICE_NAME };
 246         return seqNames;
 247     }
 248
 249         OUString OAcceptor::getImplementationName()
 250     {
 251         return acceptor_getImplementationName();
 252     }
 253
 254         sal_Bool OAcceptor::supportsService(const OUString& ServiceName)
 255     {
 256         return cppu::supportsService(this, ServiceName);
 257     }
 258
 259         Sequence< OUString > OAcceptor::getSupportedServiceNames()
 260     {
 261         return acceptor_getSupportedServiceNames();
 262     }
 263
 264
 265 }
 266
 267 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */