1 files changed, 173 insertions, 0 deletions
diff --git a/Source/WebKit2/Shared/Plugins/Netscape/NetscapePluginModule.cpp b/Source/WebKit2/Shared/Plugins/Netscape/NetscapePluginModule.cpp
new file mode 100644
index 0000000..fec00b3
--- /dev/null
+++ b/Source/WebKit2/Shared/Plugins/Netscape/NetscapePluginModule.cpp
@@ -0,0 +1,173 @@
+/*
+ * Copyright (C) 2010 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "NetscapePluginModule.h"
+
+#include "Module.h"
+#include "NetscapeBrowserFuncs.h"
+#include <wtf/PassOwnPtr.h>
+
+namespace WebKit {
+
+static Vector<NetscapePluginModule*>& initializedNetscapePluginModules()
+{
+    DEFINE_STATIC_LOCAL(Vector<NetscapePluginModule*>, initializedNetscapePluginModules, ());
+    return initializedNetscapePluginModules;
+}
+
+NetscapePluginModule::NetscapePluginModule(const String& pluginPath)
+    : m_pluginPath(pluginPath)
+    , m_isInitialized(false)
+    , m_pluginCount(0)
+    , m_shutdownProcPtr(0)
+    , m_pluginFuncs()
+{
+}
+
+NetscapePluginModule::~NetscapePluginModule()
+{
+    ASSERT(initializedNetscapePluginModules().find(this) == notFound);
+}
+
+void NetscapePluginModule::pluginCreated()
+{
+    if (!m_pluginCount) {
+        // Load the plug-in module if necessary.
+        load();
+    }
+        
+    m_pluginCount++;
+}
+
+void NetscapePluginModule::pluginDestroyed()
+{
+    ASSERT(m_pluginCount > 0);
+    m_pluginCount--;
+    
+    if (!m_pluginCount) {
+        shutdown();
+        unload();
+    }
+}
+
+void NetscapePluginModule::shutdown()
+{
+    ASSERT(m_isInitialized);
+
+    m_shutdownProcPtr();
+
+    m_isInitialized = false;
+
+    size_t pluginModuleIndex = initializedNetscapePluginModules().find(this);
+    ASSERT(pluginModuleIndex != notFound);
+    
+    initializedNetscapePluginModules().remove(pluginModuleIndex);
+}
+
+PassRefPtr<NetscapePluginModule> NetscapePluginModule::getOrCreate(const String& pluginPath)
+{
+    // First, see if we already have a module with this plug-in path.
+    for (size_t i = 0; i < initializedNetscapePluginModules().size(); ++i) {
+        NetscapePluginModule* pluginModule = initializedNetscapePluginModules()[i];
+
+        if (pluginModule->m_pluginPath == pluginPath)
+            return pluginModule;
+    }
+
+    RefPtr<NetscapePluginModule> pluginModule(adoptRef(new NetscapePluginModule(pluginPath)));
+    
+    // Try to load and initialize the plug-in module.
+    if (!pluginModule->load())
+        return 0;
+    
+    return pluginModule.release();
+}
+
+bool NetscapePluginModule::load()
+{
+    if (m_isInitialized) {
+        ASSERT(initializedNetscapePluginModules().find(this) != notFound);
+        return true;
+    }
+
+    if (!tryLoad()) {
+        unload();
+        return false;
+    }
+    
+    m_isInitialized = true;
+
+    ASSERT(initializedNetscapePluginModules().find(this) == notFound);
+    initializedNetscapePluginModules().append(this);
+
+    determineQuirks();
+
+    return true;
+}
+
+bool NetscapePluginModule::tryLoad()
+{
+    m_module = adoptPtr(new Module(m_pluginPath));
+    if (!m_module->load())
+        return false;
+
+    NP_InitializeFuncPtr initializeFuncPtr = m_module->functionPointer<NP_InitializeFuncPtr>("NP_Initialize");
+    if (!initializeFuncPtr)
+        return false;
+
+    NP_GetEntryPointsFuncPtr getEntryPointsFuncPtr = m_module->functionPointer<NP_GetEntryPointsFuncPtr>("NP_GetEntryPoints");
+    if (!getEntryPointsFuncPtr)
+        return false;
+
+    m_shutdownProcPtr = m_module->functionPointer<NPP_ShutdownProcPtr>("NP_Shutdown");
+    if (!m_shutdownProcPtr)
+        return false;
+
+    m_pluginFuncs.size = sizeof(NPPluginFuncs);
+    m_pluginFuncs.version = (NP_VERSION_MAJOR << 8) | NP_VERSION_MINOR;
+
+    // On Mac, NP_Initialize must be called first, then NP_GetEntryPoints. On Windows, the order is
+    // reversed. Failing to follow this order results in crashes (e.g., in Silverlight on Mac and
+    // in Flash and QuickTime on Windows).
+#if PLATFORM(MAC)
+    if (initializeFuncPtr(netscapeBrowserFuncs()) != NPERR_NO_ERROR || getEntryPointsFuncPtr(&m_pluginFuncs) != NPERR_NO_ERROR)
+        return false;
+#elif PLATFORM(WIN)
+    if (getEntryPointsFuncPtr(&m_pluginFuncs) != NPERR_NO_ERROR || initializeFuncPtr(netscapeBrowserFuncs()) != NPERR_NO_ERROR)
+        return false;
+#endif
+
+    return true;
+}
+
+void NetscapePluginModule::unload()
+{
+    ASSERT(!m_isInitialized);
+
+    m_module = 0;
+}
+
+} // namespace WebKit
+