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// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/plugin/plugin_thread.h"
#include "build/build_config.h"
#include "base/command_line.h"
#include "base/lazy_instance.h"
#include "base/process_util.h"
#include "base/thread_local.h"
#include "chrome/common/child_process.h"
#include "chrome/common/chrome_plugin_lib.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/plugin_messages.h"
#include "chrome/common/render_messages.h"
#include "chrome/plugin/chrome_plugin_host.h"
#include "chrome/plugin/npobject_util.h"
#include "chrome/renderer/render_thread.h"
#include "net/base/net_errors.h"
#include "webkit/glue/plugins/plugin_lib.h"
#include "webkit/glue/webkit_glue.h"
static base::LazyInstance<base::ThreadLocalPointer<PluginThread> > lazy_tls(
base::LINKER_INITIALIZED);
PluginThread::PluginThread()
: preloaded_plugin_module_(NULL) {
plugin_path_ = FilePath::FromWStringHack(
CommandLine::ForCurrentProcess()->GetSwitchValue(switches::kPluginPath));
lazy_tls.Pointer()->Set(this);
#if defined(OS_LINUX)
{
// XEmbed plugins assume they are hosted in a Gtk application, so we need
// to initialize Gtk in the plugin process.
g_thread_init(NULL);
const std::vector<std::string>& args =
CommandLine::ForCurrentProcess()->argv();
int argc = args.size();
scoped_array<char *> argv(new char *[argc + 1]);
for (size_t i = 0; i < args.size(); ++i) {
// TODO(piman@google.com): can gtk_init modify argv? Just being safe
// here.
argv[i] = strdup(args[i].c_str());
}
argv[argc] = NULL;
char **argv_pointer = argv.get();
gtk_init(&argc, &argv_pointer);
for (size_t i = 0; i < args.size(); ++i) {
free(argv[i]);
}
}
#endif
PatchNPNFunctions();
// Preload the library to avoid loading, unloading then reloading
preloaded_plugin_module_ = base::LoadNativeLibrary(plugin_path_);
ChromePluginLib::Create(plugin_path_, GetCPBrowserFuncsForPlugin());
scoped_refptr<NPAPI::PluginLib> plugin =
NPAPI::PluginLib::CreatePluginLib(plugin_path_);
if (plugin.get()) {
plugin->NP_Initialize();
}
// Certain plugins, such as flash, steal the unhandled exception filter
// thus we never get crash reports when they fault. This call fixes it.
message_loop()->set_exception_restoration(true);
}
PluginThread::~PluginThread() {
if (preloaded_plugin_module_) {
base::UnloadNativeLibrary(preloaded_plugin_module_);
preloaded_plugin_module_ = NULL;
}
PluginChannelBase::CleanupChannels();
NPAPI::PluginLib::UnloadAllPlugins();
ChromePluginLib::UnloadAllPlugins();
if (webkit_glue::ShouldForcefullyTerminatePluginProcess())
base::KillProcess(base::GetCurrentProcessHandle(), 0, /* wait= */ false);
lazy_tls.Pointer()->Set(NULL);
}
PluginThread* PluginThread::current() {
return lazy_tls.Pointer()->Get();
}
void PluginThread::OnControlMessageReceived(const IPC::Message& msg) {
IPC_BEGIN_MESSAGE_MAP(PluginThread, msg)
IPC_MESSAGE_HANDLER(PluginProcessMsg_CreateChannel, OnCreateChannel)
IPC_MESSAGE_HANDLER(PluginProcessMsg_PluginMessage, OnPluginMessage)
IPC_END_MESSAGE_MAP()
}
void PluginThread::OnCreateChannel(int renderer_id,
bool off_the_record) {
scoped_refptr<PluginChannel> channel = PluginChannel::GetPluginChannel(
renderer_id, ChildProcess::current()->io_message_loop());
IPC::ChannelHandle channel_handle;
if (channel.get()) {
channel_handle.name = channel->channel_name();
#if defined(OS_POSIX)
// On POSIX, pass the renderer-side FD. Also mark it as auto-close so that
// it gets closed after it has been sent.
int renderer_fd = channel->DisownRendererFd();
channel_handle.socket = base::FileDescriptor(renderer_fd, true);
#endif
channel->set_off_the_record(off_the_record);
}
Send(new PluginProcessHostMsg_ChannelCreated(channel_handle));
}
void PluginThread::OnPluginMessage(const std::vector<unsigned char> &data) {
// We Add/Release ref here to ensure that something will trigger the
// shutdown mechanism for processes started in the absence of renderer's
// opening a plugin channel.
ChildProcess::current()->AddRefProcess();
ChromePluginLib *chrome_plugin = ChromePluginLib::Find(plugin_path_);
if (chrome_plugin) {
void *data_ptr = const_cast<void*>(reinterpret_cast<const void*>(&data[0]));
uint32 data_len = static_cast<uint32>(data.size());
chrome_plugin->functions().on_message(data_ptr, data_len);
}
ChildProcess::current()->ReleaseProcess();
}
namespace webkit_glue {
#if defined(OS_WIN)
bool DownloadUrl(const std::string& url, HWND caller_window) {
PluginThread* plugin_thread = PluginThread::current();
if (!plugin_thread) {
return false;
}
IPC::Message* message =
new PluginProcessHostMsg_DownloadUrl(MSG_ROUTING_NONE, url,
::GetCurrentProcessId(),
caller_window);
return plugin_thread->Send(message);
}
#endif
bool GetPluginFinderURL(std::string* plugin_finder_url) {
if (!plugin_finder_url) {
NOTREACHED();
return false;
}
PluginThread* plugin_thread = PluginThread::current();
if (!plugin_thread)
return false;
plugin_thread->Send(
new PluginProcessHostMsg_GetPluginFinderUrl(plugin_finder_url));
DCHECK(!plugin_finder_url->empty());
return true;
}
#if defined(OS_MACOSX)
__attribute__((visibility("default")))
void NotifyBrowserOfPluginSelectWindow(uint32 window_id, CGRect bounds) {
PluginThread* plugin_thread = PluginThread::current();
if (plugin_thread) {
gfx::Rect window_bounds(bounds);
plugin_thread->Send(
new PluginProcessHostMsg_PluginSelectWindow(window_id, window_bounds));
}
}
__attribute__((visibility("default")))
void NotifyBrowserOfPluginShowWindow(uint32 window_id, CGRect bounds) {
PluginThread* plugin_thread = PluginThread::current();
if (plugin_thread) {
gfx::Rect window_bounds(bounds);
plugin_thread->Send(
new PluginProcessHostMsg_PluginShowWindow(window_id, window_bounds));
}
}
__attribute__((visibility("default")))
void NotifyBrowserOfPluginHideWindow(uint32 window_id, CGRect bounds) {
PluginThread* plugin_thread = PluginThread::current();
if (plugin_thread) {
gfx::Rect window_bounds(bounds);
plugin_thread->Send(
new PluginProcessHostMsg_PluginHideWindow(window_id, window_bounds));
}
}
__attribute__((visibility("default")))
void NotifyBrowserOfPluginDisposeWindow(uint32 window_id, CGRect bounds) {
PluginThread* plugin_thread = PluginThread::current();
if (plugin_thread) {
gfx::Rect window_bounds(bounds);
plugin_thread->Send(
new PluginProcessHostMsg_PluginDisposeWindow(window_id, window_bounds));
}
}
#endif
bool IsDefaultPluginEnabled() {
#if defined(OS_WIN)
return true;
#elif defined(OS_LINUX)
// http://code.google.com/p/chromium/issues/detail?id=10952
return false;
#elif defined(OS_MACOSX)
// http://code.google.com/p/chromium/issues/detail?id=17392
return false;
#endif
}
// Dispatch the resolve proxy resquest to the right code, depending on which
// process the plugin is running in {renderer, browser, plugin}.
bool FindProxyForUrl(const GURL& url, std::string* proxy_list) {
int net_error;
std::string proxy_result;
bool result;
if (IsPluginProcess()) {
result = PluginThread::current()->Send(
new PluginProcessHostMsg_ResolveProxy(url, &net_error, &proxy_result));
} else {
result = RenderThread::current()->Send(
new ViewHostMsg_ResolveProxy(url, &net_error, &proxy_result));
}
if (!result || net_error != net::OK)
return false;
*proxy_list = proxy_result;
return true;
}
} // namespace webkit_glue
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