desktop/source/offacc/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 <sal/config.h>
  21
  22 #include "acceptor.hxx"
  23 #include <com/sun/star/bridge/BridgeFactory.hpp>
  24 #include <com/sun/star/connection/Acceptor.hpp>
  25 #include <com/sun/star/uno/XNamingService.hpp>
  26 #include <com/sun/star/lang/XSingleServiceFactory.hpp>
  27 #include <comphelper/processfactory.hxx>
  28 #include <cppuhelper/factory.hxx>
  29 #include <cppuhelper/supportsservice.hxx>
  30 #include <sal/log.hxx>
  31 #include <tools/diagnose_ex.h>
  32
  33 using namespace css::bridge;
  34 using namespace css::connection;
  35 using namespace css::lang;
  36 using namespace css::uno;
  37
  38 namespace desktop
  39 {
  40
  41 extern "C" {
  42
  43 static void offacc_workerfunc (void * acc)
  44 {
  45     osl_setThreadName("URP Acceptor");
  46
  47     static_cast<Acceptor*>(acc)->run();
  48 }
  49
  50 }
  51
  52 Acceptor::Acceptor( const Reference< XComponentContext >& rxContext )
  53     : m_thread(nullptr)
  54     , m_rContext(rxContext)
  55     , m_bInit(false)
  56     , m_bDying(false)
  57 {
  58     m_rAcceptor = css::connection::Acceptor::create(m_rContext);
  59     m_rBridgeFactory = BridgeFactory::create(m_rContext);
  60 }
  61
  62
  63 Acceptor::~Acceptor()
  64 {
  65     m_rAcceptor->stopAccepting();
  66     oslThread t;
  67     {
  68         osl::MutexGuard g(m_aMutex);
  69         t = m_thread;
  70     }
  71     //prevent locking if the thread is still waiting
  72     m_bDying = true;
  73     m_cEnable.set();
  74     osl_joinWithThread(t);
  75     osl_destroyThread(t);
  76     {
  77         // Make the final state of m_bridges visible to this thread (since
  78         // m_thread is joined, the code that follows is the only one left
  79         // accessing m_bridges):
  80         osl::MutexGuard g(m_aMutex);
  81     }
  82     for (;;) {
  83         css::uno::Reference< css::bridge::XBridge > b(m_bridges.remove());
  84         if (!b.is()) {
  85             break;
  86         }
  87         css::uno::Reference< css::lang::XComponent >(
  88             b, css::uno::UNO_QUERY_THROW)->dispose();
  89     }
  90 }
  91
  92 void Acceptor::run()
  93 {
  94     SAL_INFO( "desktop.offacc", "Acceptor::run" );
  95     for (;;)
  96     {
  97         try
  98         {
  99             // wait until we get enabled
 100             SAL_INFO( "desktop.offacc",
 101                 "Acceptor::run waiting for office to come up");
 102             m_cEnable.wait();
 103             if (m_bDying) //see destructor
 104                 break;
 105             SAL_INFO( "desktop.offacc",
 106                 "Acceptor::run now enabled and continuing");
 107
 108             // accept connection
 109             Reference< XConnection > rConnection = m_rAcceptor->accept( m_aConnectString );
 110             // if we return without a valid connection we must assume that the acceptor
 111             // is destructed so we break out of the run method terminating the thread
 112             if (! rConnection.is()) break;
 113             OUString aDescription = rConnection->getDescription();
 114             SAL_INFO( "desktop.offacc", "Acceptor::run connection " << aDescription );
 115
 116             // create instanceprovider for this connection
 117             Reference< XInstanceProvider > rInstanceProvider(new AccInstanceProvider(m_rContext));
 118             // create the bridge. The remote end will have a reference to this bridge
 119             // thus preventing the bridge from being disposed. When the remote end releases
 120             // the bridge, it will be destructed.
 121             Reference< XBridge > rBridge = m_rBridgeFactory->createBridge(
 122                 "", m_aProtocol, rConnection, rInstanceProvider);
 123             osl::MutexGuard g(m_aMutex);
 124             m_bridges.add(rBridge);
 125         } catch (const Exception&) {
 126             TOOLS_WARN_EXCEPTION("desktop.offacc", "");
 127             // connection failed...
 128             // something went wrong during connection setup.
 129             // just wait for a new connection to accept
 130         }
 131     }
 132 }
 133
 134 // XInitialize
 135 void Acceptor::initialize( const Sequence<Any>& aArguments )
 136 {
 137     // prevent multiple initialization
 138     osl::MutexGuard aGuard( m_aMutex );
 139     SAL_INFO( "desktop.offacc", "Acceptor::initialize()" );
 140
 141     bool bOk = false;
 142
 143     // arg count
 144     int nArgs = aArguments.getLength();
 145
 146     // not yet initialized and accept-string
 147     if (!m_bInit && nArgs > 0 && (aArguments[0] >>= m_aAcceptString))
 148     {
 149         SAL_INFO( "desktop.offacc", "Acceptor::initialize string=" << m_aAcceptString );
 150
 151         // get connect string and protocol from accept string
 152         // "<connectString>;<protocol>"
 153         sal_Int32 nIndex1 = m_aAcceptString.indexOf( ';' );
 154         if (nIndex1 < 0)
 155             throw IllegalArgumentException(
 156                     "Invalid accept-string format", m_rContext, 1);
 157         m_aConnectString = m_aAcceptString.copy( 0 , nIndex1 ).trim();
 158         nIndex1++;
 159         sal_Int32 nIndex2 = m_aAcceptString.indexOf( ';' , nIndex1 );
 160         if (nIndex2 < 0) nIndex2 = m_aAcceptString.getLength();
 161         m_aProtocol = m_aAcceptString.copy( nIndex1, nIndex2 - nIndex1 );
 162
 163         // start accepting in new thread...
 164         m_thread = osl_createThread(offacc_workerfunc, this);
 165         m_bInit = true;
 166         bOk = true;
 167     }
 168
 169     // do we want to enable accepting?
 170     bool bEnable = false;
 171     if (((nArgs == 1 && (aArguments[0] >>= bEnable)) ||
 172          (nArgs == 2 && (aArguments[1] >>= bEnable))) &&
 173         bEnable )
 174     {
 175         m_cEnable.set();
 176         bOk = true;
 177     }
 178
 179     if (!bOk)
 180     {
 181         throw IllegalArgumentException( "invalid initialization", m_rContext, 1);
 182     }
 183 }
 184
 185 // XServiceInfo
 186 OUString Acceptor::impl_getImplementationName()
 187 {
 188     return "com.sun.star.office.comp.Acceptor";
 189 }
 190 OUString Acceptor::getImplementationName()
 191 {
 192     return Acceptor::impl_getImplementationName();
 193 }
 194 Sequence<OUString> Acceptor::impl_getSupportedServiceNames()
 195 {
 196     return { "com.sun.star.office.Acceptor" };
 197 }
 198 Sequence<OUString> Acceptor::getSupportedServiceNames()
 199 {
 200     return Acceptor::impl_getSupportedServiceNames();
 201 }
 202
 203 sal_Bool Acceptor::supportsService(OUString const & ServiceName)
 204 {
 205     return cppu::supportsService(this, ServiceName);
 206 }
 207
 208 // Factory
 209 Reference< XInterface > Acceptor::impl_getInstance( const Reference< XMultiServiceFactory >& aFactory )
 210 {
 211     try {
 212         return static_cast<cppu::OWeakObject *>(
 213             new Acceptor(comphelper::getComponentContext(aFactory)));
 214     } catch ( const Exception& ) {
 215         return css::uno::Reference<css::uno::XInterface>();
 216     }
 217 }
 218
 219 // InstanceProvider
 220 AccInstanceProvider::AccInstanceProvider(const Reference<XComponentContext>& rxContext)
 221 {
 222     m_rContext = rxContext;
 223 }
 224
 225 AccInstanceProvider::~AccInstanceProvider()
 226 {
 227 }
 228
 229 Reference<XInterface> AccInstanceProvider::getInstance (const OUString& aName )
 230 {
 231
 232     Reference<XInterface> rInstance;
 233
 234     if ( aName == "StarOffice.ServiceManager" )
 235     {
 236         rInstance.set( m_rContext->getServiceManager() );
 237     }
 238     else if ( aName == "StarOffice.ComponentContext" )
 239     {
 240         rInstance = m_rContext;
 241     }
 242     else if ( aName == "StarOffice.NamingService" )
 243     {
 244         Reference< XNamingService > rNamingService(
 245             m_rContext->getServiceManager()->createInstanceWithContext("com.sun.star.uno.NamingService", m_rContext),
 246             UNO_QUERY );
 247         if ( rNamingService.is() )
 248         {
 249             rNamingService->registerObject( "StarOffice.ServiceManager", m_rContext->getServiceManager() );
 250             rNamingService->registerObject( "StarOffice.ComponentContext", m_rContext );
 251             rInstance = rNamingService;
 252         }
 253     }
 254     return rInstance;
 255 }
 256
 257 }
 258
 259 // component management stuff...
 260
 261 extern "C"
 262 {
 263 using namespace desktop;
 264
 265 SAL_DLLPUBLIC_EXPORT void * offacc_component_getFactory(char const *pImplementationName, void *pServiceManager, void *)
 266 {
 267     void* pReturn = nullptr ;
 268     if  ( pImplementationName && pServiceManager )
 269     {
 270         // Define variables which are used in following macros.
 271         Reference< XSingleServiceFactory > xFactory;
 272         Reference< XMultiServiceFactory >  xServiceManager(
 273             static_cast< XMultiServiceFactory* >(pServiceManager));
 274
 275         if (desktop::Acceptor::impl_getImplementationName().equalsAscii( pImplementationName ) )
 276         {
 277             xFactory.set( cppu::createSingleFactory(
 278                 xServiceManager, desktop::Acceptor::impl_getImplementationName(),
 279                 desktop::Acceptor::impl_getInstance, desktop::Acceptor::impl_getSupportedServiceNames()) );
 280         }
 281
 282         // Factory is valid - service was found.
 283         if ( xFactory.is() )
 284         {
 285             xFactory->acquire();
 286             pReturn = xFactory.get();
 287         }
 288     }
 289
 290     // Return with result of this operation.
 291     return pReturn ;
 292 }
 293
 294 } // extern "C"
 295
 296 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */