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// Copyright (c) 2010 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/browser/ppapi_plugin_process_host.h"
#include "base/command_line.h"
#include "base/file_path.h"
#include "base/process_util.h"
#include "chrome/browser/renderer_host/render_message_filter.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/render_messages.h"
#include "ipc/ipc_switches.h"
#include "ppapi/proxy/ppapi_messages.h"
PpapiPluginProcessHost::PpapiPluginProcessHost(RenderMessageFilter* filter)
: BrowserChildProcessHost(ChildProcessInfo::PPAPI_PLUGIN_PROCESS,
filter->resource_dispatcher_host()),
filter_(filter) {
}
PpapiPluginProcessHost::~PpapiPluginProcessHost() {
}
void PpapiPluginProcessHost::Init(const FilePath& path,
IPC::Message* reply_msg) {
plugin_path_ = path;
reply_msg_.reset(reply_msg);
if (!CreateChannel()) {
ReplyToRenderer(base::kNullProcessHandle, IPC::ChannelHandle());
return;
}
const CommandLine& browser_command_line = *CommandLine::ForCurrentProcess();
CommandLine::StringType plugin_launcher =
browser_command_line.GetSwitchValueNative(switches::kPpapiPluginLauncher);
FilePath exe_path = ChildProcessHost::GetChildPath(plugin_launcher.empty());
if (exe_path.empty()) {
ReplyToRenderer(base::kNullProcessHandle, IPC::ChannelHandle());
return;
}
CommandLine* cmd_line = new CommandLine(exe_path);
cmd_line->AppendSwitchASCII(switches::kProcessType,
switches::kPpapiPluginProcess);
cmd_line->AppendSwitchASCII(switches::kProcessChannelID, channel_id());
if (!plugin_launcher.empty())
cmd_line->PrependWrapper(plugin_launcher);
// On posix, having a plugin launcher means we need to use another process
// instead of just forking the zygote.
Launch(
#if defined(OS_WIN)
FilePath(),
#elif defined(OS_POSIX)
plugin_launcher.empty(),
base::environment_vector(),
#endif
cmd_line);
}
bool PpapiPluginProcessHost::CanShutdown() {
return true;
}
void PpapiPluginProcessHost::OnProcessLaunched() {
}
bool PpapiPluginProcessHost::OnMessageReceived(const IPC::Message& msg) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(PpapiPluginProcessHost, msg)
IPC_MESSAGE_HANDLER(PpapiHostMsg_PluginLoaded, OnPluginLoaded)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
DCHECK(handled);
return handled;
}
void PpapiPluginProcessHost::OnChannelConnected(int32 peer_pid) {
#if defined(OS_WIN)
base::ProcessHandle plugins_renderer_handle = NULL;
::DuplicateHandle(::GetCurrentProcess(), filter_->peer_handle(),
GetChildProcessHandle(), &plugins_renderer_handle,
0, FALSE, DUPLICATE_SAME_ACCESS);
#elif defined(OS_POSIX)
base::ProcessHandle plugins_renderer_handle = filter_->peer_handle();
#endif
PpapiMsg_LoadPlugin* msg = new PpapiMsg_LoadPlugin(
plugins_renderer_handle, plugin_path_, filter_->render_process_id());
if (!Send(msg)) // Just send an empty handle on failure.
ReplyToRenderer(base::kNullProcessHandle, IPC::ChannelHandle());
// This function will result in OnChannelCreated getting called to finish.
}
void PpapiPluginProcessHost::OnChannelError() {
if (reply_msg_.get())
ReplyToRenderer(base::kNullProcessHandle, IPC::ChannelHandle());
}
void PpapiPluginProcessHost::OnPluginLoaded(
const IPC::ChannelHandle& channel_handle) {
base::ProcessHandle plugin_process = GetChildProcessHandle();
#if defined(OS_WIN)
base::ProcessHandle renderers_plugin_handle = NULL;
::DuplicateHandle(::GetCurrentProcess(), plugin_process,
filter_->peer_handle(), &renderers_plugin_handle,
0, FALSE, DUPLICATE_SAME_ACCESS);
#elif defined(OS_POSIX)
// Don't need to duplicate anything on POSIX since it's just a PID.
base::ProcessHandle renderers_plugin_handle = plugin_process;
#endif
ReplyToRenderer(renderers_plugin_handle, channel_handle);
}
void PpapiPluginProcessHost::ReplyToRenderer(
base::ProcessHandle plugin_handle,
const IPC::ChannelHandle& channel_handle) {
DCHECK(reply_msg_.get());
ViewHostMsg_OpenChannelToPepperPlugin::WriteReplyParams(reply_msg_.get(),
plugin_handle,
channel_handle);
filter_->Send(reply_msg_.release());
}
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