1// Copyright (c) 2012 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#include "components/nacl/browser/nacl_broker_host_win.h" 6 7#include "base/base_switches.h" 8#include "base/command_line.h" 9#include "base/path_service.h" 10#include "components/nacl/browser/nacl_broker_service_win.h" 11#include "components/nacl/browser/nacl_browser.h" 12#include "components/nacl/common/nacl_cmd_line.h" 13#include "components/nacl/common/nacl_messages.h" 14#include "components/nacl/common/nacl_process_type.h" 15#include "components/nacl/common/nacl_switches.h" 16#include "content/public/browser/browser_child_process_host.h" 17#include "content/public/browser/child_process_data.h" 18#include "content/public/common/child_process_host.h" 19#include "content/public/common/content_switches.h" 20#include "content/public/common/sandboxed_process_launcher_delegate.h" 21#include "ipc/ipc_switches.h" 22 23namespace { 24// NOTE: changes to this class need to be reviewed by the security team. 25class NaClBrokerSandboxedProcessLauncherDelegate 26 : public content::SandboxedProcessLauncherDelegate { 27 public: 28 NaClBrokerSandboxedProcessLauncherDelegate() {} 29 virtual ~NaClBrokerSandboxedProcessLauncherDelegate() {} 30 31 virtual bool ShouldSandbox() OVERRIDE { 32 return false; 33 } 34 35 private: 36 DISALLOW_COPY_AND_ASSIGN(NaClBrokerSandboxedProcessLauncherDelegate); 37}; 38} // namespace 39 40namespace nacl { 41 42NaClBrokerHost::NaClBrokerHost() : is_terminating_(false) { 43 process_.reset(content::BrowserChildProcessHost::Create( 44 PROCESS_TYPE_NACL_BROKER, this)); 45} 46 47NaClBrokerHost::~NaClBrokerHost() { 48} 49 50bool NaClBrokerHost::Init() { 51 // Create the channel that will be used for communicating with the broker. 52 std::string channel_id = process_->GetHost()->CreateChannel(); 53 if (channel_id.empty()) 54 return false; 55 56 // Create the path to the nacl broker/loader executable. 57 base::FilePath nacl_path; 58 if (!NaClBrowser::GetInstance()->GetNaCl64ExePath(&nacl_path)) 59 return false; 60 61 CommandLine* cmd_line = new CommandLine(nacl_path); 62 CopyNaClCommandLineArguments(cmd_line); 63 64 cmd_line->AppendSwitchASCII(switches::kProcessType, 65 switches::kNaClBrokerProcess); 66 cmd_line->AppendSwitchASCII(switches::kProcessChannelID, channel_id); 67 if (NaClBrowser::GetDelegate()->DialogsAreSuppressed()) 68 cmd_line->AppendSwitch(switches::kNoErrorDialogs); 69 70 process_->Launch(new NaClBrokerSandboxedProcessLauncherDelegate, 71 cmd_line); 72 return true; 73} 74 75bool NaClBrokerHost::OnMessageReceived(const IPC::Message& msg) { 76 bool handled = true; 77 IPC_BEGIN_MESSAGE_MAP(NaClBrokerHost, msg) 78 IPC_MESSAGE_HANDLER(NaClProcessMsg_LoaderLaunched, OnLoaderLaunched) 79 IPC_MESSAGE_HANDLER(NaClProcessMsg_DebugExceptionHandlerLaunched, 80 OnDebugExceptionHandlerLaunched) 81 IPC_MESSAGE_UNHANDLED(handled = false) 82 IPC_END_MESSAGE_MAP() 83 return handled; 84} 85 86bool NaClBrokerHost::LaunchLoader(const std::string& loader_channel_id) { 87 return process_->Send( 88 new NaClProcessMsg_LaunchLoaderThroughBroker(loader_channel_id)); 89} 90 91void NaClBrokerHost::OnLoaderLaunched(const std::string& loader_channel_id, 92 base::ProcessHandle handle) { 93 NaClBrokerService::GetInstance()->OnLoaderLaunched(loader_channel_id, handle); 94} 95 96bool NaClBrokerHost::LaunchDebugExceptionHandler( 97 int32 pid, base::ProcessHandle process_handle, 98 const std::string& startup_info) { 99 base::ProcessHandle broker_process = process_->GetData().handle; 100 base::ProcessHandle handle_in_broker_process; 101 if (!DuplicateHandle(::GetCurrentProcess(), process_handle, 102 broker_process, &handle_in_broker_process, 103 0, /* bInheritHandle= */ FALSE, DUPLICATE_SAME_ACCESS)) 104 return false; 105 return process_->Send(new NaClProcessMsg_LaunchDebugExceptionHandler( 106 pid, handle_in_broker_process, startup_info)); 107} 108 109void NaClBrokerHost::OnDebugExceptionHandlerLaunched(int32 pid, bool success) { 110 NaClBrokerService::GetInstance()->OnDebugExceptionHandlerLaunched(pid, 111 success); 112} 113 114void NaClBrokerHost::StopBroker() { 115 is_terminating_ = true; 116 process_->Send(new NaClProcessMsg_StopBroker()); 117} 118 119} // namespace nacl 120