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// Copyright (c) 2012 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.
// This file defines a class to load the main DLL of a Chrome process.
#ifndef CHROME_APP_MAIN_DLL_LOADER_WIN_H_
#define CHROME_APP_MAIN_DLL_LOADER_WIN_H_
#include <windows.h> // NOLINT
#include <string>
#include "base/files/file_path.h"
#include "base/strings/string16.h"
// Implements the common aspects of loading the main dll for both chrome and
// chromium scenarios, which are in charge of implementing two abstract
// methods: GetRegistryPath() and OnBeforeLaunch().
class MainDllLoader {
public:
MainDllLoader();
virtual ~MainDllLoader();
// Loads and calls the entry point of chrome.dll. |instance| is the exe
// instance retrieved from wWinMain.
// The return value is what the main entry point of chrome.dll returns
// upon termination.
int Launch(HINSTANCE instance);
// Launches a new instance of the browser if the current instance in
// persistent mode an upgrade is detected.
void RelaunchChromeBrowserWithNewCommandLineIfNeeded();
protected:
// Called after chrome.dll has been loaded but before the entry point
// is invoked. Derived classes can implement custom actions here.
// |process_type| is the argument to the --type command line argument, e.g.
// "renderer", "watcher", etc.
// |dll_path| refers to the path of the Chrome dll being loaded.
virtual void OnBeforeLaunch(const std::string& process_type,
const base::FilePath& dll_path) = 0;
// Called after the chrome.dll entry point returns and before terminating
// this process. The return value will be used as the process return code.
// |dll_path| refers to the path of the Chrome dll being loaded.
virtual int OnBeforeExit(int return_code, const base::FilePath& dll_path) = 0;
private:
// Loads chrome.dll, populating |version| with the version of the DLL loaded
// and |module| with the path of the loaded DLL. Returns a reference to the
// module, or null on failure.
HMODULE Load(base::string16* version, base::FilePath* module);
private:
HMODULE dll_;
std::string process_type_;
};
// Factory for the MainDllLoader. Caller owns the pointer and should call
// delete to free it.
MainDllLoader* MakeMainDllLoader();
#endif // CHROME_APP_MAIN_DLL_LOADER_WIN_H_
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