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/*
* Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
* Copyright (C) 2008 Collabora Ltd. 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 COMPUTER, INC. ``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 COMPUTER, INC. OR
* 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 "config.h"
#include "PluginPackage.h"
#include "MIMETypeRegistry.h"
#include "PluginDatabase.h"
#include "PluginDebug.h"
#include "npruntime_impl.h"
#include <QFileInfo>
#include <wtf/text/CString.h>
namespace WebCore {
bool PluginPackage::fetchInfo()
{
if (!m_module) {
if (isPluginBlacklisted())
return false;
m_module = new QLibrary((QString)m_path);
m_module->setLoadHints(QLibrary::ResolveAllSymbolsHint);
if (!m_module->load()) {
LOG(Plugins, "%s not loaded (%s)", m_path.utf8().data(),
m_module->errorString().toLatin1().constData());
return false;
}
// This is technically wrong (not matched by a decrement), but
// it matches the previous behavior (fetchInfo calling load) and
// prevents crashes in flash due to unload+load.
m_loadCount++;
}
NPP_GetValueProcPtr gv = (NPP_GetValueProcPtr)m_module->resolve("NP_GetValue");
NP_GetMIMEDescriptionFuncPtr gm =
(NP_GetMIMEDescriptionFuncPtr)m_module->resolve("NP_GetMIMEDescription");
if (!gm || !gv)
return false;
char *buf = 0;
NPError err = gv(0, NPPVpluginNameString, (void*) &buf);
if (err != NPERR_NO_ERROR)
return false;
m_name = String::fromUTF8(buf);
err = gv(0, NPPVpluginDescriptionString, (void*) &buf);
if (err != NPERR_NO_ERROR)
return false;
m_description = String::fromUTF8(buf);
determineModuleVersionFromDescription();
setMIMEDescription(String::fromUTF8(gm()));
return true;
}
void PluginPackage::setMIMEDescription(const String& mimeDescription)
{
m_fullMIMEDescription = mimeDescription.lower();
Vector<String> types;
mimeDescription.lower().split(UChar(';'), false, types);
for (unsigned i = 0; i < types.size(); ++i) {
Vector<String> mime;
types[i].split(UChar(':'), true, mime);
if (mime.size() > 0) {
Vector<String> exts;
if (mime.size() > 1)
mime[1].split(UChar(','), false, exts);
determineQuirks(mime[0]);
m_mimeToExtensions.add(mime[0], exts);
if (mime.size() > 2)
m_mimeToDescriptions.add(mime[0], mime[2]);
}
}
}
static NPError staticPluginQuirkRequiresGtkToolKit_NPN_GetValue(NPP instance, NPNVariable variable, void* value)
{
if (variable == NPNVToolkit) {
*static_cast<uint32_t*>(value) = 2;
return NPERR_NO_ERROR;
}
return NPN_GetValue(instance, variable, value);
}
static void initializeGtk(QLibrary* module = 0)
{
// Ensures missing Gtk initialization in some versions of Adobe's flash player
// plugin do not cause crashes. See BR# 40567, 44324, and 44405 for details.
if (module) {
typedef void *(*gtk_init_ptr)(int*, char***);
gtk_init_ptr gtkInit = (gtk_init_ptr)module->resolve("gtk_init");
if (gtkInit) {
// Prevent gtk_init() from replacing the X error handlers, since the Gtk
// handlers abort when they receive an X error, thus killing the viewer.
#ifdef Q_WS_X11
int (*old_error_handler)(Display*, XErrorEvent*) = XSetErrorHandler(0);
int (*old_io_error_handler)(Display*) = XSetIOErrorHandler(0);
#endif
gtkInit(0, 0);
#ifdef Q_WS_X11
XSetErrorHandler(old_error_handler);
XSetIOErrorHandler(old_io_error_handler);
#endif
return;
}
}
QLibrary library(QLatin1String("libgtk-x11-2.0"), 0);
if (library.load()) {
typedef void *(*gtk_init_check_ptr)(int*, char***);
gtk_init_check_ptr gtkInitCheck = (gtk_init_check_ptr)library.resolve("gtk_init_check");
// NOTE: We're using gtk_init_check() since gtk_init() calls exit() on failure.
if (gtkInitCheck)
(void) gtkInitCheck(0, 0);
}
}
bool PluginPackage::isPluginBlacklisted()
{
// TODO: enumerate all plugins that are incompatible with Qt5.
const QLatin1String pluginBlacklist[] = {
QLatin1String("skypebuttons"),
QLatin1String("libkpartsplugin")
};
QString baseName = QFileInfo(static_cast<QString>(m_path)).baseName();
for (unsigned i = 0; i < sizeof(pluginBlacklist) / sizeof(QLatin1String); ++i) {
if (baseName == pluginBlacklist[i])
return true;
}
return false;
}
bool PluginPackage::load()
{
if (m_isLoaded) {
m_loadCount++;
return true;
}
if (isPluginBlacklisted())
return false;
if (!m_module) {
m_module = new QLibrary((QString)m_path);
m_module->setLoadHints(QLibrary::ResolveAllSymbolsHint);
if (!m_module->load()) {
LOG(Plugins, "%s not loaded (%s)", m_path.utf8().data(),
m_module->errorString().toLatin1().constData());
return false;
}
}
m_isLoaded = true;
NP_InitializeFuncPtr NP_Initialize;
NPError npErr;
NP_Initialize = (NP_InitializeFuncPtr)m_module->resolve("NP_Initialize");
m_NPP_Shutdown = (NPP_ShutdownProcPtr)m_module->resolve("NP_Shutdown");
if (!NP_Initialize || !m_NPP_Shutdown)
goto abort;
memset(&m_pluginFuncs, 0, sizeof(m_pluginFuncs));
m_pluginFuncs.size = sizeof(m_pluginFuncs);
initializeBrowserFuncs();
if (m_path.contains("npwrapper.") || m_path.contains("gnash")) {
// nspluginwrapper relies on the toolkit value to know if glib is available
// It does so in NP_Initialize with a null instance, therefore it is done this way:
m_browserFuncs.getvalue = staticPluginQuirkRequiresGtkToolKit_NPN_GetValue;
// Workaround Adobe's failure to properly initialize Gtk in some versions
// of their flash player plugin.
initializeGtk();
} else if (m_path.contains("flashplayer")) {
// Workaround Adobe's failure to properly initialize Gtk in some versions
// of their flash player plugin.
initializeGtk(m_module);
}
#if defined(XP_UNIX)
npErr = NP_Initialize(&m_browserFuncs, &m_pluginFuncs);
#else
npErr = NP_Initialize(&m_browserFuncs);
#endif
if (npErr != NPERR_NO_ERROR)
goto abort;
m_loadCount++;
return true;
abort:
unloadWithoutShutdown();
return false;
}
uint16_t PluginPackage::NPVersion() const
{
return NP_VERSION_MINOR;
}
}
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