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 <uno/mapping.hxx>
  23
  24 #include <cppuhelper/factory.hxx>
  25 #include <cppuhelper/implbase2.hxx>
  26 #include <cppuhelper/implementationentry.hxx>
  27 #include <cppuhelper/supportsservice.hxx>
  28 #include "cppuhelper/unourl.hxx"
  29 #include "rtl/malformeduriexception.hxx"
  30
  31 #include <com/sun/star/connection/XAcceptor.hpp>
  32 #include <com/sun/star/lang/XServiceInfo.hpp>
  33
  34 #include "services.hxx"
  35 #include "acceptor.hxx"
  36
  37 #define IMPLEMENTATION_NAME "com.sun.star.comp.io.Acceptor"
  38 #define SERVICE_NAME "com.sun.star.connection.Acceptor"
  39
  40 using namespace ::osl;
  41 using namespace ::cppu;
  42 using namespace ::com::sun::star::uno;
  43 using namespace ::com::sun::star::lang;
  44 using namespace ::com::sun::star::registry;
  45 using namespace ::com::sun::star::connection;
  46
  47 namespace io_acceptor
  48 {
  49     class OAcceptor : public WeakImplHelper2< XAcceptor, XServiceInfo >
  50     {
  51     public:
  52         OAcceptor(const Reference< XComponentContext > & xCtx);
  53         virtual ~OAcceptor();
  54     public:
  55         // Methods
  56         virtual Reference< XConnection > SAL_CALL accept( const OUString& sConnectionDescription )
  57             throw( AlreadyAcceptingException,
  58                    ConnectionSetupException,
  59                    IllegalArgumentException,
  60                    RuntimeException, std::exception) SAL_OVERRIDE;
  61         virtual void SAL_CALL stopAccepting(  ) throw( RuntimeException, std::exception) SAL_OVERRIDE;
  62
  63     public: // XServiceInfo
  64                 virtual OUString              SAL_CALL getImplementationName() throw(std::exception) SAL_OVERRIDE;
  65                 virtual Sequence< OUString >  SAL_CALL getSupportedServiceNames() throw(std::exception) SAL_OVERRIDE;
  66                 virtual sal_Bool              SAL_CALL supportsService(const OUString& ServiceName) throw(std::exception) SAL_OVERRIDE;
  67
  68     private:
  69         PipeAcceptor *m_pPipe;
  70         SocketAcceptor *m_pSocket;
  71         Mutex m_mutex;
  72         OUString m_sLastDescription;
  73         bool m_bInAccept;
  74
  75         Reference< XMultiComponentFactory > _xSMgr;
  76         Reference< XComponentContext > _xCtx;
  77         Reference<XAcceptor>         _xAcceptor;
  78     };
  79
  80
  81     OAcceptor::OAcceptor( const Reference< XComponentContext > & xCtx )
  82         : m_pPipe( 0 )
  83         , m_pSocket( 0 )
  84         , m_bInAccept( false )
  85         , _xSMgr( xCtx->getServiceManager() )
  86         , _xCtx( xCtx )
  87     {}
  88
  89     OAcceptor::~OAcceptor()
  90     {
  91         if( m_pPipe )
  92         {
  93             delete m_pPipe;
  94         }
  95         if( m_pSocket )
  96         {
  97             delete m_pSocket;
  98         }
  99     }
 100
 101     struct BeingInAccept
 102     {
 103         BeingInAccept( bool *pFlag,const OUString & sConnectionDescription  ) throw( AlreadyAcceptingException)
 104             : m_pFlag( pFlag )
 105             {
 106                   if( *m_pFlag )
 107                   {
 108                       OUString sMessage( "AlreadyAcceptingException :" );
 109                       sMessage += sConnectionDescription;
 110                       throw AlreadyAcceptingException( sMessage );
 111                   }
 112                   *m_pFlag = true;
 113             }
 114         ~BeingInAccept()
 115             {
 116                 *m_pFlag = false;
 117             }
 118         bool *m_pFlag;
 119     };
 120
 121     Reference< XConnection > OAcceptor::accept( const OUString &sConnectionDescription )
 122         throw( AlreadyAcceptingException,
 123                ConnectionSetupException,
 124                IllegalArgumentException,
 125                RuntimeException, std::exception)
 126     {
 127         OSL_TRACE(
 128             "acceptor %s\n",
 129             OUStringToOString(
 130                 sConnectionDescription, RTL_TEXTENCODING_ASCII_US).getStr());
 131         // if there is a thread alread accepting in this object, throw an exception.
 132         struct BeingInAccept guard( &m_bInAccept, sConnectionDescription );
 133
 134         Reference< XConnection > r;
 135         if( !m_sLastDescription.isEmpty() &&
 136             m_sLastDescription != sConnectionDescription )
 137         {
 138             // instantiate another acceptor for different ports
 139             OUString sMessage = "acceptor::accept called multiple times with different conncetion strings\n";
 140             throw ConnectionSetupException( sMessage );
 141         }
 142
 143         if( m_sLastDescription.isEmpty() )
 144         {
 145             // setup the acceptor
 146             try
 147             {
 148                 cppu::UnoUrlDescriptor aDesc(sConnectionDescription);
 149                 if ( aDesc.getName() == "pipe" )
 150                 {
 151                     OUString aName(
 152                         aDesc.getParameter(
 153                             OUString("name")));
 154
 155                     m_pPipe = new PipeAcceptor(aName, sConnectionDescription);
 156
 157                     try
 158                     {
 159                         m_pPipe->init();
 160                     }
 161                     catch( ... )
 162                     {
 163                         {
 164                             MutexGuard g( m_mutex );
 165                             delete m_pPipe;
 166                             m_pPipe = 0;
 167                         }
 168                         throw;
 169                     }
 170                 }
 171                 else if ( aDesc.getName() == "socket" )
 172                 {
 173                     OUString aHost;
 174                     if (aDesc.hasParameter(
 175                             OUString("host")))
 176                         aHost = aDesc.getParameter(
 177                             OUString("host"));
 178                     else
 179                         aHost = "localhost";
 180                     sal_uInt16 nPort = static_cast< sal_uInt16 >(
 181                         aDesc.getParameter(
 182                             OUString("port")).
 183                         toInt32());
 184                     bool bTcpNoDelay
 185                         = aDesc.getParameter(
 186                             OUString("tcpnodelay")).toInt32() != 0;
 187
 188                     m_pSocket = new SocketAcceptor(
 189                         aHost, nPort, bTcpNoDelay, sConnectionDescription);
 190
 191                     try
 192                     {
 193                         m_pSocket->init();
 194                     }
 195                     catch( ... )
 196                     {
 197                         {
 198                             MutexGuard g( m_mutex );
 199                             delete m_pSocket;
 200                             m_pSocket = 0;
 201                         }
 202                         throw;
 203                     }
 204                 }
 205                 else
 206                 {
 207                     OUString delegatee = "com.sun.star.connection.Acceptor." + aDesc.getName();
 208
 209                     OSL_TRACE(
 210                         "trying to get service %s\n",
 211                         OUStringToOString(
 212                             delegatee, RTL_TEXTENCODING_ASCII_US).getStr());
 213                     _xAcceptor = Reference<XAcceptor>(
 214                         _xSMgr->createInstanceWithContext(delegatee, _xCtx), UNO_QUERY);
 215
 216                     if(!_xAcceptor.is())
 217                     {
 218                         OUString message("Acceptor: unknown delegatee ");
 219                         message += delegatee;
 220
 221                         throw ConnectionSetupException(message);
 222                     }
 223                 }
 224             }
 225             catch (const rtl::MalformedUriException & rEx)
 226             {
 227                 throw IllegalArgumentException(
 228                     rEx.getMessage(),
 229                     Reference< XInterface > (),
 230                     0 );
 231             }
 232             m_sLastDescription = sConnectionDescription;
 233         }
 234
 235         if( m_pPipe )
 236         {
 237             r = m_pPipe->accept();
 238         }
 239         else if( m_pSocket )
 240         {
 241             r = m_pSocket->accept();
 242         }
 243         else
 244         {
 245             r = _xAcceptor->accept(sConnectionDescription);
 246         }
 247
 248         return r;
 249     }
 250
 251     void SAL_CALL OAcceptor::stopAccepting(  ) throw( RuntimeException, std::exception)
 252     {
 253         MutexGuard guard( m_mutex );
 254
 255         if( m_pPipe )
 256         {
 257             m_pPipe->stopAccepting();
 258         }
 259         else if ( m_pSocket )
 260         {
 261             m_pSocket->stopAccepting();
 262         }
 263         else if( _xAcceptor.is() )
 264         {
 265             _xAcceptor->stopAccepting();
 266         }
 267
 268     }
 269
 270     OUString acceptor_getImplementationName()
 271     {
 272         return OUString( IMPLEMENTATION_NAME );
 273     }
 274
 275     Reference< XInterface > SAL_CALL acceptor_CreateInstance( const Reference< XComponentContext > & xCtx)
 276     {
 277         return Reference < XInterface >( ( OWeakObject * ) new OAcceptor(xCtx) );
 278     }
 279
 280     Sequence< OUString > acceptor_getSupportedServiceNames()
 281     {
 282         Sequence< OUString > seqNames(1);
 283         seqNames.getArray()[0] = SERVICE_NAME;
 284         return seqNames;
 285     }
 286
 287         OUString OAcceptor::getImplementationName() throw(std::exception)
 288     {
 289         return acceptor_getImplementationName();
 290     }
 291
 292         sal_Bool OAcceptor::supportsService(const OUString& ServiceName) throw(std::exception)
 293     {
 294         return cppu::supportsService(this, ServiceName);
 295     }
 296
 297         Sequence< OUString > OAcceptor::getSupportedServiceNames() throw(std::exception)
 298     {
 299         return acceptor_getSupportedServiceNames();
 300     }
 301
 302
 303 }
 304
 305 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */