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 #include "NetscapeBrowserFuncs.h"

    28 

    29 namespace WebKit {

    30 

    31 void NetscapePluginModule::unload()

    32 {

    33     if (m_bundle) {

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

    35         // whose methods come from that bundle.

    36         m_bundle.releaseRef();

    37     }

    38 }

    39 

    40 template<typename FuncType> 

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

    42 {

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

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

    45 }

    46     

    47 bool NetscapePluginModule::tryLoad()

    48 {

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

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

    51     if (!bundleURL)

    52         return false;

    53 

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

    55     if (!m_bundle)

    56         return false;

    57     

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

    59         return false;

    60 

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

    62     if (!initializeFuncPtr)

    63         return false;

    64 

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

    66     if (!getEntryPointsFuncPtr)

    67         return false;

    68 

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

    70     if (!m_shutdownProcPtr)

    71         return false;

    72 

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

    74         return false;

    75     

    76     m_pluginFuncs.size = sizeof(NPPluginFuncs);

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

    78     if (getEntryPointsFuncPtr(&m_pluginFuncs) != NPERR_NO_ERROR)

    79         return false;

    80 

    81     return true;

    82 }

    83 

    84 } // namespace WebKit