1 /*

     2  * Copyright (C) 2010 Apple Inc. All rights reserved.

     3  *

     4  * Redistribution and use in source and binary forms, with or without

     5  * modification, are permitted provided that the following conditions

     6  * are met:

     7  * 1. Redistributions of source code must retain the above copyright

     8  *    notice, this list of conditions and the following disclaimer.

     9  * 2. Redistributions in binary form must reproduce the above copyright

    10  *    notice, this list of conditions and the following disclaimer in the

    11  *    documentation and/or other materials provided with the distribution.

    12  *

    13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''

    14  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

    15  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

    16  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS

    17  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

    18  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

    19  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

    20  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

    21  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

    22  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF

    23  * THE POSSIBILITY OF SUCH DAMAGE.

    24  */

    25 

    26 #include "NetscapePluginModule.h"

    27 

    28 using namespace WebCore;

    29 

    30 namespace WebKit {

    31 

    32 static Vector<NetscapePluginModule*>& initializedNetscapePluginModules()

    33 {

    34     DEFINE_STATIC_LOCAL(Vector<NetscapePluginModule*>, initializedNetscapePluginModules, ());

    35     return initializedNetscapePluginModules;

    36 }

    37 

    38 NetscapePluginModule::NetscapePluginModule(const String& pluginPath)

    39     : m_pluginPath(pluginPath)

    40     , m_isInitialized(false)

    41     , m_pluginCount(0)

    42     , m_shutdownProcPtr(0)

    43     , m_pluginFuncs()

    44 {

    45 }

    46 

    47 NetscapePluginModule::~NetscapePluginModule()

    48 {

    49     ASSERT(initializedNetscapePluginModules().find(this) == notFound);

    50 }

    51 

    52 void NetscapePluginModule::pluginCreated()

    53 {

    54     m_pluginCount++;

    55 }

    56 

    57 void NetscapePluginModule::pluginDestroyed()

    58 {

    59     ASSERT(m_pluginCount > 0);

    60     m_pluginCount--;

    61     

    62     if (!m_pluginCount)

    63         shutdown();

    64 }

    65 

    66 void NetscapePluginModule::shutdown()

    67 {

    68     ASSERT(m_isInitialized);

    69 

    70     m_shutdownProcPtr();

    71 

    72     size_t pluginModuleIndex = initializedNetscapePluginModules().find(this);

    73     ASSERT(pluginModuleIndex != notFound);

    74     

    75     initializedNetscapePluginModules().remove(pluginModuleIndex);

    76 }

    77 

    78 PassRefPtr<NetscapePluginModule> NetscapePluginModule::getOrCreate(const String& pluginPath)

    79 {

    80     // First, see if we already have a module with this plug-in path.

    81     for (size_t i = 0; i < initializedNetscapePluginModules().size(); ++i) {

    82         NetscapePluginModule* pluginModule = initializedNetscapePluginModules()[i];

    83 

    84         if (pluginModule->m_pluginPath == pluginPath)

    85             return pluginModule;

    86     }

    87 

    88     RefPtr<NetscapePluginModule> pluginModule(adoptRef(new NetscapePluginModule(pluginPath)));

    89     

    90     // Try to load and initialize the plug-in module.

    91     if (!pluginModule->load())

    92         return 0;

    93     

    94     return pluginModule.release();

    95 }

    96 

    97 bool NetscapePluginModule::load()

    98 {

    99     if (!tryLoad()) {

   100         unload();

   101         return false;

   102     }

   103     

   104     m_isInitialized = true;

   105 

   106     ASSERT(initializedNetscapePluginModules().find(this) == notFound);

   107     initializedNetscapePluginModules().append(this);

   108 

   109     return true;

   110 }

   111 

   112 } // namespace WebKit

   113