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// Copyright (c) 2011 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 <windows.h>
#include <tchar.h>
#include <string>
#include "base/at_exit.h"
#include "base/command_line.h"
#include "base/files/file_path.h"
#include "base/lazy_instance.h"
#include "chrome/app/chrome_breakpad_client.h"
#include "chrome/app/client_util.h"
#include "chrome/app/metro_driver_win.h"
#include "chrome/browser/chrome_process_finder_win.h"
#include "chrome/browser/policy/policy_path_parser.h"
#include "chrome/common/chrome_constants.h"
#include "chrome/common/chrome_paths_internal.h"
#include "chrome/common/chrome_switches.h"
#include "chrome_elf/chrome_elf_main.h"
#include "components/breakpad/app/breakpad_client.h"
#include "components/breakpad/app/breakpad_win.h"
#include "components/startup_metric_utils/startup_metric_utils.h"
#include "content/public/app/startup_helper_win.h"
#include "content/public/common/result_codes.h"
#include "sandbox/win/src/sandbox_factory.h"
#include "ui/gfx/win/dpi.h"
namespace {
base::LazyInstance<chrome::ChromeBreakpadClient>::Leaky
g_chrome_breakpad_client = LAZY_INSTANCE_INITIALIZER;
void CheckSafeModeLaunch() {
unsigned short k1 = ::GetAsyncKeyState(VK_CONTROL);
unsigned short k2 = ::GetAsyncKeyState(VK_MENU);
const unsigned short kPressedMask = 0x8000;
if ((k1 & kPressedMask) && (k2 & kPressedMask))
::SetEnvironmentVariableA(chrome::kSafeModeEnvVar, "1");
}
int RunChrome(HINSTANCE instance) {
breakpad::SetBreakpadClient(g_chrome_breakpad_client.Pointer());
CheckSafeModeLaunch();
bool exit_now = true;
// We restarted because of a previous crash. Ask user if we should relaunch.
// Only show this for the browser process. See crbug.com/132119.
const std::string process_type =
CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
switches::kProcessType);
if (process_type.empty()) {
if (breakpad::ShowRestartDialogIfCrashed(&exit_now)) {
if (exit_now)
return content::RESULT_CODE_NORMAL_EXIT;
}
}
// Initialize the sandbox services.
sandbox::SandboxInterfaceInfo sandbox_info = {0};
content::InitializeSandboxInfo(&sandbox_info);
// Load and launch the chrome dll. *Everything* happens inside.
MainDllLoader* loader = MakeMainDllLoader();
int rc = loader->Launch(instance, &sandbox_info);
loader->RelaunchChromeBrowserWithNewCommandLineIfNeeded();
delete loader;
return rc;
}
// List of switches that it's safe to rendezvous early with. Fast start should
// not be done if a command line contains a switch not in this set.
// Note this is currently stored as a list of two because it's probably faster
// to iterate over this small array than building a map for constant time
// lookups.
const char* const kFastStartSwitches[] = {
switches::kProfileDirectory,
switches::kShowAppList,
};
bool IsFastStartSwitch(const std::string& command_line_switch) {
for (size_t i = 0; i < arraysize(kFastStartSwitches); ++i) {
if (command_line_switch == kFastStartSwitches[i])
return true;
}
return false;
}
bool ContainsNonFastStartFlag(const CommandLine& command_line) {
const CommandLine::SwitchMap& switches = command_line.GetSwitches();
if (switches.size() > arraysize(kFastStartSwitches))
return true;
for (CommandLine::SwitchMap::const_iterator it = switches.begin();
it != switches.end(); ++it) {
if (!IsFastStartSwitch(it->first))
return true;
}
return false;
}
bool AttemptFastNotify(const CommandLine& command_line) {
if (ContainsNonFastStartFlag(command_line))
return false;
base::FilePath user_data_dir;
if (!chrome::GetDefaultUserDataDirectory(&user_data_dir))
return false;
policy::path_parser::CheckUserDataDirPolicy(&user_data_dir);
HWND chrome = chrome::FindRunningChromeWindow(user_data_dir);
if (!chrome)
return false;
return chrome::AttemptToNotifyRunningChrome(chrome, true) ==
chrome::NOTIFY_SUCCESS;
}
} // namespace
int APIENTRY wWinMain(HINSTANCE instance, HINSTANCE prev, wchar_t*, int) {
startup_metric_utils::RecordExeMainEntryTime();
// Signal Chrome Elf that Chrome has begun to start.
SignalChromeElf();
// Initialize the commandline singleton from the environment.
CommandLine::Init(0, NULL);
// The exit manager is in charge of calling the dtors of singletons.
base::AtExitManager exit_manager;
gfx::EnableHighDPISupport();
if (AttemptFastNotify(*CommandLine::ForCurrentProcess()))
return 0;
MetroDriver metro_driver;
if (metro_driver.in_metro_mode())
return metro_driver.RunInMetro(instance, &RunChrome);
// Not in metro mode, proceed as normal.
return RunChrome(instance);
}
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