/*

 * 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 "NetscapeBrowserFuncs.h"

namespace WebKit {

void NetscapePluginModule::unload()

{

    if (m_bundle) {

        // We explicitly leak the bundle here, to avoid crashes when a bundle is unloaded and there are live Objective-C objects

        // whose methods come from that bundle.

        m_bundle.releaseRef();

    }

}

template<typename FuncType> 

static inline FuncType pointerToFunction(CFBundleRef bundle, const char* functionName)

{

    RetainPtr<CFStringRef> functionNameString(AdoptCF, CFStringCreateWithCStringNoCopy(kCFAllocatorDefault, functionName, kCFStringEncodingASCII, kCFAllocatorNull));

    return reinterpret_cast<FuncType>(CFBundleGetFunctionPointerForName(bundle, functionNameString.get()));

}

bool NetscapePluginModule::tryLoad()

{

    RetainPtr<CFStringRef> bundlePath(AdoptCF, m_pluginPath.createCFString());

    RetainPtr<CFURLRef> bundleURL(AdoptCF, CFURLCreateWithFileSystemPath(0, bundlePath.get(), kCFURLPOSIXPathStyle, FALSE));

    if (!bundleURL)

        return false;

    m_bundle.adoptCF(CFBundleCreate(kCFAllocatorDefault, bundleURL.get()));

    if (!m_bundle)

        return false;

    if (!CFBundleLoadExecutable(m_bundle.get()))

        return false;

    NP_InitializeFuncPtr initializeFuncPtr = pointerToFunction<NP_InitializeFuncPtr>(m_bundle.get(), "NP_Initialize");

    if (!initializeFuncPtr)

        return false;

    NP_GetEntryPointsFuncPtr getEntryPointsFuncPtr = pointerToFunction<NP_GetEntryPointsFuncPtr>(m_bundle.get(), "NP_GetEntryPoints");

    if (!getEntryPointsFuncPtr)

        return false;

    m_shutdownProcPtr = pointerToFunction<NPP_ShutdownProcPtr>(m_bundle.get(), "NP_Shutdown");

    if (!m_shutdownProcPtr)

        return false;

    if (initializeFuncPtr(netscapeBrowserFuncs()) != NPERR_NO_ERROR)

        return false;

    m_pluginFuncs.size = sizeof(NPPluginFuncs);

    m_pluginFuncs.version = (NP_VERSION_MAJOR << 8) | NP_VERSION_MINOR;

    if (getEntryPointsFuncPtr(&m_pluginFuncs) != NPERR_NO_ERROR)

        return false;

    return true;

}

} // namespace WebKit