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/*
* Copyright (C) 2011, 2014 Igalia S.L.
* Copyright (C) 2011 Apple Inc.
* Copyright (C) 2012 Samsung Electronics
*
* 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT OWNER 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 "PluginProcessProxy.h"
#if ENABLE(PLUGIN_PROCESS)
#include "PluginProcessCreationParameters.h"
#include "ProcessExecutablePath.h"
#include <WebCore/FileSystem.h>
#include <sys/wait.h>
#include <wtf/text/CString.h>
#include <wtf/text/WTFString.h>
#if PLATFORM(GTK) || PLATFORM(EFL)
#include <glib.h>
#include <wtf/gobject/GUniquePtr.h>
#endif
#if PLATFORM(GTK)
#include "Module.h"
#endif
using namespace WebCore;
namespace WebKit {
void PluginProcessProxy::platformGetLaunchOptions(ProcessLauncher::LaunchOptions& launchOptions, const PluginProcessAttributes& pluginProcessAttributes)
{
#if PLATFORM(EFL) && !defined(NDEBUG)
const char* commandPrefix = getenv("PLUGIN_PROCESS_COMMAND_PREFIX");
if (commandPrefix && *commandPrefix)
launchOptions.processCmdPrefix = String::fromUTF8(commandPrefix);
#endif
launchOptions.extraInitializationData.add("plugin-path", pluginProcessAttributes.moduleInfo.path);
#if PLATFORM(GTK)
if (pluginProcessAttributes.moduleInfo.requiresGtk2)
launchOptions.extraInitializationData.add("requires-gtk2", emptyString());
#endif
}
void PluginProcessProxy::platformInitializePluginProcess(PluginProcessCreationParameters&)
{
}
#if PLATFORM(GTK)
static bool pluginRequiresGtk2(const String& pluginPath)
{
std::unique_ptr<Module> module = std::make_unique<Module>(pluginPath);
if (!module->load())
return false;
return module->functionPointer<gpointer>("gtk_object_get_type");
}
#endif
#if PLUGIN_ARCHITECTURE(X11)
bool PluginProcessProxy::scanPlugin(const String& pluginPath, RawPluginMetaData& result)
{
#if PLATFORM(GTK) || PLATFORM(EFL)
String pluginProcessPath = executablePathOfPluginProcess();
#if PLATFORM(GTK)
bool requiresGtk2 = pluginRequiresGtk2(pluginPath);
if (requiresGtk2)
#if ENABLE(PLUGIN_PROCESS_GTK2)
pluginProcessPath.append('2');
#else
return false;
#endif
#endif
CString binaryPath = fileSystemRepresentation(pluginProcessPath);
CString pluginPathCString = fileSystemRepresentation(pluginPath);
char* argv[4];
argv[0] = const_cast<char*>(binaryPath.data());
argv[1] = const_cast<char*>("-scanPlugin");
argv[2] = const_cast<char*>(pluginPathCString.data());
argv[3] = nullptr;
// If the disposition of SIGCLD signal is set to SIG_IGN (default)
// then the signal will be ignored and g_spawn_sync() will not be
// able to return the status.
// As a consequence, we make sure that the disposition is set to
// SIG_DFL before calling g_spawn_sync().
#if defined(SIGCLD)
struct sigaction action;
sigaction(SIGCLD, 0, &action);
if (action.sa_handler == SIG_IGN) {
action.sa_handler = SIG_DFL;
sigaction(SIGCLD, &action, 0);
}
#endif
int status;
GUniqueOutPtr<char> stdOut;
GUniqueOutPtr<GError> error;
if (!g_spawn_sync(nullptr, argv, nullptr, G_SPAWN_STDERR_TO_DEV_NULL, nullptr, nullptr, &stdOut.outPtr(), nullptr, &status, &error.outPtr())) {
WTFLogAlways("Failed to launch %s: %s", argv[0], error->message);
return false;
}
if (!WIFEXITED(status) || WEXITSTATUS(status) != EXIT_SUCCESS) {
WTFLogAlways("Error scanning plugin %s, %s returned %d exit status", argv[2], argv[0], status);
return false;
}
if (!stdOut) {
WTFLogAlways("Error scanning plugin %s, %s didn't write any output to stdout", argv[2], argv[0]);
return false;
}
Vector<String> lines;
String::fromUTF8(stdOut.get()).split(UChar('\n'), true, lines);
if (lines.size() < 3) {
WTFLogAlways("Error scanning plugin %s, too few lines of output provided", argv[2]);
return false;
}
result.name.swap(lines[0]);
result.description.swap(lines[1]);
result.mimeDescription.swap(lines[2]);
#if PLATFORM(GTK)
result.requiresGtk2 = requiresGtk2;
#endif
return !result.mimeDescription.isEmpty();
#else // PLATFORM(GTK) || PLATFORM(EFL)
return false;
#endif // PLATFORM(GTK) || PLATFORM(EFL)
}
#endif // PLUGIN_ARCHITECTURE(X11)
} // namespace WebKit
#endif // ENABLE(PLUGIN_PROCESS)
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