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// This file defines utility functions that can report details about the 6// host operating environment. 7 8#ifndef CHROME_APP_CLIENT_UTIL_H_ 9#define CHROME_APP_CLIENT_UTIL_H_ 10 11#include <windows.h> 12 13#include <string> 14#include "base/strings/string16.h" 15 16namespace sandbox { 17 struct SandboxInterfaceInfo; 18} 19 20// Gets the path of the current exe with a trailing backslash. 21base::string16 GetExecutablePath(); 22 23// Returns the version in the current module's version resource or the empty 24// string if none found. 25base::string16 GetCurrentModuleVersion(); 26 27// Implements the common aspects of loading the main dll for both chrome and 28// chromium scenarios, which are in charge of implementing two abstract 29// methods: GetRegistryPath() and OnBeforeLaunch(). 30class MainDllLoader { 31 public: 32 MainDllLoader(); 33 virtual ~MainDllLoader(); 34 35 // Loads and calls the entry point of chrome.dll. |instance| is the exe 36 // instance retrieved from wWinMain. 37 // The return value is what the main entry point of chrome.dll returns 38 // upon termination. 39 int Launch(HINSTANCE instance); 40 41 // Launches a new instance of the browser if the current instance in 42 // persistent mode an upgrade is detected. 43 void RelaunchChromeBrowserWithNewCommandLineIfNeeded(); 44 45 protected: 46 // Called after chrome.dll has been loaded but before the entry point 47 // is invoked. Derived classes can implement custom actions here. 48 // |dll_path| refers to the path of the Chrome dll being loaded. 49 virtual void OnBeforeLaunch(const base::string16& dll_path) = 0; 50 51 // Called after the chrome.dll entry point returns and before terminating 52 // this process. The return value will be used as the process return code. 53 // |dll_path| refers to the path of the Chrome dll being loaded. 54 virtual int OnBeforeExit(int return_code, const base::string16& dll_path) = 0; 55 56 private: 57 HMODULE Load(base::string16* version, base::string16* out_file); 58 59 private: 60 HMODULE dll_; 61 std::string process_type_; 62 const bool metro_mode_; 63}; 64 65// Factory for the MainDllLoader. Caller owns the pointer and should call 66// delete to free it. 67MainDllLoader* MakeMainDllLoader(); 68 69#endif // CHROME_APP_CLIENT_UTIL_H_ 70