# Cppcheck report - LibreOffice: connectivity/source/drivers/mozab/bootstrap/MNSInit.cxx

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    /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
    /*
     * This file is part of the LibreOffice project.
     *
     * This Source Code Form is subject to the terms of the Mozilla Public
     * License, v. 2.0. If a copy of the MPL was not distributed with this
     * file, You can obtain one at http://mozilla.org/MPL/2.0/.
     *
     * This file incorporates work covered by the following license notice:
     *
     *   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 .
     */

    #include "mozillasrc/MNSInclude.hxx"

    #include "mozilla_nsinit.h"

    #include "MNSInit.hxx"

    #include <sal/types.h>
    #include <osl/diagnose.h>
    #include <osl/conditn.hxx>
    #include <osl/file.hxx>
    #include <rtl/bootstrap.hxx>

    #include "MConfigAccess.hxx"
    #include "mozillasrc/MNSDeclares.hxx"
    #include <osl/thread.hxx>
    #include "mozillasrc/MNSTerminateListener.hxx"

    static nsIServiceManager*   sServiceManager = nsnull;
    static sal_Int32            sInitCounter = 0;
    static bool                 s_bProfilePresentAfterInitialized = false;

    static NS_DEFINE_CID(kProfileCID, NS_PROFILE_CID);
    static NS_DEFINE_CID(kPrefCID, NS_PREF_CID);

    static NS_DEFINE_CID(kEventQueueServiceCID, NS_EVENTQUEUESERVICE_CID);
    static PRBool aLive=1;
    static ::osl::Condition    m_aUI_Thread_Condition;

    #define HACK_AROUND_THREADING_ISSUES
    #define HACK_AROUND_NONREENTRANT_INITXPCOM

    #ifdef HACK_AROUND_NONREENTRANT_INITXPCOM
    // XXX hack class to clean up XPCOM when this module is unloaded
    static PRBool sXPCOMInitializedFlag = PR_FALSE;
    #endif

    extern "C" void NS_SetupRegistry();

     const PRUnichar* determineProfile( PRUnichar const* const* _pValidProfiles, const PRUint32 _nValidProfiles )<--- The function 'determineProfile' is never used.
    {
        // the fallback for the to-be-used user profile: the first profile
        const PRUnichar* pUsedProfile = *_pValidProfiles;

        // have a look what the configuration suggests as preferred profile
        // PRUnichar != sal_Unicode in mingw
        const PRUnichar* pPreferredProfile = reinterpret_cast_mingw_only< const PRUnichar* >( getUserProfile( ) );
        if ( pPreferredProfile && *pPreferredProfile )
        {
            PRUnichar const* const* pLoop = _pValidProfiles;
            PRUnichar const* const* pLoopEnd = pLoop + _nValidProfiles;
            for ( ; pLoop != pLoopEnd; ++pLoop )
            {
                // compare the current and the preferred profile
                // (by looping through the characters)
                const PRUnichar* pCurrent   = *pLoop;
                const PRUnichar* pPref      = pPreferredProfile;
                while ( *pCurrent && ( *pCurrent == *pPref ) )  // testing one of them against 0 is enough because of the second clause
                {
                    ++pCurrent;
                    ++pPref;
                }
                if ( *pCurrent == *pPref )
                    // the are equal
                    break;
            }

            if ( pLoop != pLoopEnd )
                pUsedProfile = *pLoop;
            return pUsedProfile;
        }
        else
            return NULL;
    }

    bool MNS_InitXPCOM(bool* aProfileExists)
    {
        nsresult rv;
        OSL_TRACE( "IN : MNS_InitXPCOM()" );
        // Reentrant calls to this method do nothing except increment a counter

    #ifdef HACK_AROUND_NONREENTRANT_INITXPCOM
        // The first time, add another increment so that it'll be left until exit
        // for the final cleanup to happen
        sInitCounter++;
    #endif // HACK_AROUND_NONREENTRANT_INITXPCOM

        // Initialise XPCOM
    #ifdef HACK_AROUND_NONREENTRANT_INITXPCOM
        // Can't call NS_InitXPCom more than once or things go boom!
        if (!sXPCOMInitializedFlag)
    #endif
        {
            nsCOMPtr<nsILocalFile> binDir;
            // Note: if path3 construction fails, mozilla will default to using MOZILLA_FIVE_HOME in the NS_InitXPCOM2()
            OUString path1("$BRAND_BASE_DIR/program");
            rtl::Bootstrap::expandMacros(path1);
            OString path2;
            if ((osl::FileBase::getSystemPathFromFileURL(path1, path1) ==
                 osl::FileBase::E_None) &&
                path1.convertToString(
                    &path2, osl_getThreadTextEncoding(),
                    (RTL_UNICODETOTEXT_FLAGS_UNDEFINED_ERROR |
                     RTL_UNICODETOTEXT_FLAGS_INVALID_ERROR)))
            {
                nsDependentCString sPath(path2.getStr());
                rv = NS_NewNativeLocalFile(sPath, PR_TRUE, getter_AddRefs(binDir));
                if (NS_FAILED(rv))
                    return false;
            }

        // Initialise XPCOM
        NS_InitXPCOM2(&sServiceManager, binDir, NULL);

    //      if (!sServiceManager)
    //          return false;

    #ifdef HACK_AROUND_NONREENTRANT_INITXPCOM
            sXPCOMInitializedFlag = PR_TRUE;
    #endif
        }

        // Create the Event Queue for the UI thread...

        // If an event queue already exists for the thread, then
        // CreateThreadEventQueue(...) will fail...
        // CreateThread0ueue(...) will fail...
        nsCOMPtr<nsIEventQueueService> eventQService(
                    do_GetService(NS_EVENTQUEUESERVICE_CONTRACTID, &rv));
        if (NS_FAILED(rv))
          return NS_SUCCEEDED( rv ) ? true : false;

        eventQService->CreateThreadEventQueue();

    //  nsCOMPtr<nsIObserver> mStartupNotifier = do_CreateInstance(NS_APPSTARTUPNOTIFIER_CONTRACTID, &rv);
    //  if(NS_FAILED(rv))
    //      return rv;
    //  mStartupNotifier->Observe(nsnull, APPSTARTUP_TOPIC, nsnull);

    #ifdef HACK_AROUND_THREADING_ISSUES
        // XXX force certain objects to be created on the main thread
        nsCOMPtr<nsIStringBundleService> sBundleService;
        sBundleService = do_GetService(NS_STRINGBUNDLE_CONTRACTID, &rv);
        if (NS_SUCCEEDED(rv))
        {
            nsCOMPtr<nsIStringBundle> stringBundle;
            const char* propertyURL = "chrome://necko/locale/necko.properties";
            rv = sBundleService->CreateBundle(propertyURL,
                                              getter_AddRefs(stringBundle));
        }
    #endif

        // Need to create a Pref Service
        nsCOMPtr< nsIPref > thePref = do_GetService( kPrefCID, &rv );
        if (NS_SUCCEEDED(rv) )
        {
            OSL_TRACE("Created an nsIPref i/f");
            thePref->ReadUserPrefs( nsnull );
            *aProfileExists = true;
            s_bProfilePresentAfterInitialized = true;
        }
        OSL_TRACE( "OUT : MNS_InitXPCOM() - XPCOM Init" );

        return true;
    }

    void MNS_XPCOM_EventLoop()
    {
        OSL_TRACE( "IN : MNS_XPCOM_EventLoop()" );
        nsresult rv;
        nsCOMPtr<nsIEventQueue> eventQ;
        nsCOMPtr<nsIEventQueueService>  eventQService;
        rv=nsServiceManager::GetService(kEventQueueServiceCID,
                                     NS_GET_IID(nsIEventQueueService),
                                     getter_AddRefs(eventQService));

        if (NS_SUCCEEDED(rv))
        {
          rv = eventQService->GetThreadEventQueue(NS_CURRENT_THREAD , getter_AddRefs(eventQ));
          if (NS_FAILED(rv))
          {
              rv = eventQService->CreateThreadEventQueue();
              if (NS_FAILED(rv))
                return ;
              else
                rv = eventQService->GetThreadEventQueue(NS_CURRENT_THREAD, getter_AddRefs(eventQ));
          }
        }

        if (NS_FAILED(rv)) return ;

        PLEvent* event = nsnull;
        m_aUI_Thread_Condition.set(); //we are ready to recive event
        do
        {
            rv = eventQ->GetEvent(&event);
            if (NS_FAILED(rv))
                return ;
            if (event)
                eventQ->HandleEvent(event);
        }while ( PR_SUCCESS == PR_Sleep( PR_MillisecondsToInterval(20)) && aLive );

        eventQ->ProcessPendingEvents();
        OSL_TRACE( "OUT : MNS_XPCOM_EventLoop()" );
    }

    extern "C" void MNS_Mozilla_UI_Thread( void *arg )
    {
        osl_setThreadName("MNS_Mozilla_UI_Thread");

        aLive=1;
        OSL_TRACE( "IN : MNS_Mozilla_UI_Thread()" );
        UI_Thread_ARGS * args = (UI_Thread_ARGS*) arg;
        bool* aProfileExists=args->bProfileExists;
        delete args;
        args=NULL;

        //Init xpcom
        if (!MNS_InitXPCOM(aProfileExists))
        {
            m_aUI_Thread_Condition.set(); // error happened
            return;
        }

        //do the mozilla event loop
        MNS_XPCOM_EventLoop();
        //we are interrupted

        if (sServiceManager)
        {
            NS_RELEASE(sServiceManager);

        // Terminate XPCOM & cleanup
    #ifndef HACK_AROUND_NONREENTRANT_INITXPCOM
            NS_ShutdownXPCOM(sServiceManager);
    #endif
        }

        m_aUI_Thread_Condition.set();   //release all blocks

        OSL_TRACE( "OUT : MNS_Mozilla_UI_Thread()" );

    }

    bool MNS_Init(bool& aProfileExists)
    {
        aProfileExists = false;

        OSL_TRACE( "IN : MNS_Init()" );
        // Reentrant calls to this method do nothing except increment a counter
        sInitCounter++;
        if (sInitCounter > 1) {
            OSL_TRACE( "IN : MNS_Init() wait for xpcom to be initted" );
            //wait for xpcom to be initted
            m_aUI_Thread_Condition.wait();

            OSL_TRACE( "OUT : MNS_Init() : counter = %d", sInitCounter );
            aProfileExists = s_bProfilePresentAfterInitialized;
            return true;
        }

        UI_Thread_ARGS * args = new UI_Thread_ARGS;
        args->bProfileExists = &aProfileExists;

        m_aUI_Thread_Condition.reset();
        if (osl_createThread(MNS_Mozilla_UI_Thread, (void*)args) == 0)
        {
            return false;
        }

        //wait for xpcom to be initted
        m_aUI_Thread_Condition.wait();

        //Add Terminate Listener to XDesktop to get application exit event
        MNSTerminateListener::addTerminateListener();

        OSL_TRACE( "OUT : MNS_Init() - First Init" );

        return true;
    }

    bool MNS_Term(bool aForce)
    {
        // Reentrant calls to this method do nothing except decrement a counter
        OSL_TRACE( "IN : MNS_Term()" );
        if (!aForce && sInitCounter > 1)
        {
            --sInitCounter;
            OSL_TRACE( "OUT : MNS_Term() : counter = %d", sInitCounter );
            return true;
        }
        sInitCounter = 0;

        aLive=0;

        //wait for xpcom to be finished
        TimeValue               timeValue = { 1, 0 };
        m_aUI_Thread_Condition.wait(&timeValue);

        OSL_TRACE( "OUT : MNS_Term() - Final Term" );
        return true;
    }

    /* vim:set shiftwidth=4 softtabstop=4 expandtab: */