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// Copyright (c) 2006-2008 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 is the Chrome-GoogleUpdater integration glue. Current features of this
// code include:
// * checks to ensure that client is properly registered with GoogleUpdater
// * versioned directory launcher to allow for completely transparent silent
// autoupdates
#ifndef CHROME_APP_GOOGLE_UPDATE_CLIENT_H_
#define CHROME_APP_GOOGLE_UPDATE_CLIENT_H_
#include <windows.h>
#include <tchar.h>
#include <string>
#include "sandbox/src/sandbox_factory.h"
namespace google_update {
class GoogleUpdateClient {
public:
GoogleUpdateClient();
virtual ~GoogleUpdateClient();
// Returns the path of the DLL that is going to be loaded.
// This function can be called only after Init().
std::wstring GetDLLPath();
// For the client guid, returns the associated version string, or NULL
// if Init() was unable to obtain one.
const wchar_t* GetVersion() const;
// Init must be called prior to other methods.
// client_guid is the guid that you registered with Google Update when you
// installed.
// Returns false if client is not properly registered with GoogleUpdate. If
// not registered, autoupdates won't be performed for this client.
bool Init(const wchar_t* client_guid, const wchar_t* client_dll);
// Launches your app's main code and initializes Google Update services.
// - looks up the registered version via GoogleUpdate, loads dll from version
// dir (e.g. Program Files/Google/1.0.101.0/chrome.dll) and calls the
// entry_name. If chrome.dll is found in this path the version is stored
// in the environment block such that subsequent launches invoke the
// save dll version.
// - instance is handle to the current instance of application
// - sandbox provides information about sandbox services
// - command_line contains command line parameters
// - show_command specifies how the window is to be shown
// - entry_name is the function of type DLL_MAIN that is called
// from chrome.dll
// - ret is an out param with the return value of entry
// Returns false if unable to load the dll or find entry_name's proc addr.
bool Launch(HINSTANCE instance, sandbox::SandboxInterfaceInfo* sandbox,
wchar_t* command_line, int show_command, const char* entry_name,
int* ret);
private:
// disallow copy ctor and operator=
GoogleUpdateClient(const GoogleUpdateClient&);
void operator=(const GoogleUpdateClient&);
// The GUID that this client has registered with GoogleUpdate for autoupdate.
std::wstring guid_;
// The name of the dll to load.
std::wstring dll_;
// The current version of this client registered with GoogleUpdate.
wchar_t* version_;
// The location of current chrome.dll.
wchar_t dll_path_[MAX_PATH];
};
} // namespace google_update
#endif // CHROME_APP_GOOGLE_UPDATE_CLIENT_H_
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