373 lines
8.9 KiB
C++
373 lines
8.9 KiB
C++
/*
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*(C) 2006 Roku LLC
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License Version 2 as published
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* by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* without any warranty; without even the implied warranty of
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* merchantability or fitness for a particular purpose. See the GNU General
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* Public License for more details.
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*
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* Please read README.txt in the same directory as this source file for
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* further license information.
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*/
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#include "stdafx.h"
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#include "resource.h"
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#include "FireflyShell.h"
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#include "DosPath.h"
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#include "ServiceControl.h"
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#include "MainDlg.h"
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#include "ServerEvents.h"
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#include "IniFile.h"
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CAppModule _Module;
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#define RUN_KEY _T("SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run")
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#define RUN_VALUE _T("FireflyShell")
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Application::Application()
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: m_dlg(NULL), m_server_events(&m_icon)
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{
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CDosPath path = CDosPath::AppPath();
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SetCurrentDirectory(path.GetPathOnly());
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CDosPath filename(_T("mt-daapd.conf"));
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filename |= path;
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m_config_path = filename.GetPath();
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ATLTRACE("Config path: %s\n", (const TCHAR *)m_config_path);
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// We don't care if this fails. We can deal with that later.
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m_service.Open(_T("Firefly Media Server"));
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CheckCanConfigure();
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m_unique_name = GenerateUniqueName();
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m_registered_activation_message = ::RegisterWindowMessage(m_unique_name);
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}
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Application::~Application()
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{
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ATLASSERT(m_dlg == NULL);
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}
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void Application::CheckCanConfigure()
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{
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IniFile ini(m_config_path);
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m_configurable = ini.IsWritable();
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}
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int Application::Run(LPCTSTR lpstrCmdLine, int nCmdShow)
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{
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if (ActivatePreviousInstance(lpstrCmdLine, nCmdShow))
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{
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ATLTRACE(_T("Already running\n"));
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return 0;
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}
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CMessageLoop theLoop;
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_Module.AddMessageLoop(&theLoop);
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if (!m_icon.Create())
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{
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ATLTRACE(_T("Icon creation failed!\n"));
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return 0;
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}
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EnableServerEvents(true);
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if (ShowDialogAtStart(lpstrCmdLine, nCmdShow))
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Configure(false);
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int nRet = theLoop.Run();
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EnableServerEvents(false);
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m_icon.Destroy();
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_Module.RemoveMessageLoop();
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return nRet;
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}
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void Application::Exit()
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{
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if (m_dlg)
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{
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m_dlg->DestroyWindow();
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}
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::PostQuitMessage(0);
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}
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void Application::Configure(bool move_window)
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{
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if (m_dlg)
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{
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m_dlg->ShowWindow(SW_RESTORE);
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SetForegroundWindow(m_dlg->m_hWnd);
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}
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else
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{
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CheckCanConfigure();
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// Other people may need to talk to the dialog while it exists.
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CMainDlg dlg(move_window);
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m_dlg = &dlg;
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dlg.DoModal();
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m_dlg = NULL;
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}
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}
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void Application::StartService(HWND hwndParent)
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{
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CWaitCursor wc;
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ATLASSERT(m_service.CanControl());
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if (!m_service.CanControl())
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return;
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if (!m_service.StartAndWait())
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{
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MessageBox(hwndParent, IDS_SERVERSTARTFAIL, MB_OK);
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}
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}
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void Application::StopService(HWND hwndParent)
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{
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CWaitCursor wc;
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ATLASSERT(m_service.CanControl());
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if (!m_service.CanControl())
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return;
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if (!m_service.StopAndWait())
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{
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MessageBox(hwndParent, IDS_SERVERSTOPFAIL, MB_OK);
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}
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}
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void Application::RestartService(HWND hwndParent)
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{
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CWaitCursor wc;
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StopService(hwndParent);
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StartService(hwndParent);
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}
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bool Application::ShowDialogAtStart(LPCTSTR cmdline, int nCmdShow)
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{
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if ((cmdline[0] == '-') && (cmdline[1] == 'q'))
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return false;
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switch (nCmdShow)
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{
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case SW_RESTORE:
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case SW_SHOW:
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case SW_SHOWMAXIMIZED:
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case SW_SHOWNORMAL:
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case SW_SHOWDEFAULT:
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case SW_MAX:
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return true;
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default:
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return false;
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}
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}
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BOOL CALLBACK Application::StaticWindowSearcher(HWND hwnd, LPARAM lparam)
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{
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DWORD result;
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LRESULT ok = ::SendMessageTimeout(hwnd,
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static_cast<UINT>(lparam),
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0, 0,
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SMTO_BLOCK |
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SMTO_ABORTIFHUNG,
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200,
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&result);
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if (ok == 0)
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return TRUE; // ignore this and continue
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// If we get the magic response then we must have found our Window
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// so we can give up.
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if (result == lparam)
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return FALSE;
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else
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return TRUE;
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}
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bool Application::ActivatePreviousInstance(LPCTSTR lpstrCmdLine, int nCmdShow)
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{
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HANDLE h = ::CreateMutex(NULL, TRUE, m_unique_name);
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const bool running = (GetLastError() == ERROR_ALREADY_EXISTS);
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if (h != NULL)
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{
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::ReleaseMutex(h);
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}
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// It seems that getting the other window to activate itself does
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// actually work even though Windows anti-focus-stealing stuff
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// could try and stop it.
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if (running && ShowDialogAtStart(lpstrCmdLine, nCmdShow))
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{
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EnumWindows(StaticWindowSearcher, m_registered_activation_message);
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return true;
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}
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return running;
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}
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CString Application::GenerateUniqueName()
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{
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// We need to allow one instance to run per desktop. See
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// http://www.codeproject.com/cpp/avoidmultinstance.asp
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// First start with some application unique
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CString s(_T("Firefly-67A72768-4154-417e-BFA0-FA9B50C342DE"));
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// Now append something desktop unique
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DWORD len;
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HDESK desktop = GetThreadDesktop(GetCurrentThreadId());
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BOOL result = GetUserObjectInformation(desktop, UOI_NAME, NULL, 0, &len);
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DWORD err = ::GetLastError();
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if(!result && err == ERROR_INSUFFICIENT_BUFFER)
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{ /* NT/2000/XP */
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LPBYTE data = new BYTE[len];
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result = GetUserObjectInformation(desktop, UOI_NAME, data, len, &len);
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s += _T("-");
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s += (LPCTSTR)data;
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delete [ ] data;
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} /* NT/2000/XP */
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else
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{ /* Win9x */
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s += _T("-Win9x");
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} /* Win9x */
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return s;
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}
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void Application::EnableServerEvents(bool b)
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{
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if (b)
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m_server_events.Start();
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else
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m_server_events.Stop();
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}
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CString Application::MakeRunKeyValue()
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{
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CString required_path("\"");
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required_path += CDosPath::AppPath().GetPath();
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required_path += "\" -q";
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return required_path;
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}
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void Application::EnableAutoStart(HWND hwnd, bool enable)
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{
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// First let's control the service.
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int required_startup = enable ? SERVICE_AUTO_START : SERVICE_DISABLED;
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if (m_service.GetStartup() != required_startup)
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{
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if (!m_service.ConfigureStartup(required_startup))
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{
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MessageBox(hwnd, IDS_FAILED_CONFIGURE_SERVICE, MB_OK);
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}
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}
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// Now let's set up the Run key.
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HKEY hkey;
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LONG result = ::RegOpenKeyEx(HKEY_LOCAL_MACHINE, RUN_KEY, 0, KEY_SET_VALUE | STANDARD_RIGHTS_WRITE, &hkey);
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if (result == ERROR_SUCCESS)
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{
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if (enable)
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{
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// We need to quote it because the path may contain spaces.
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CString str = MakeRunKeyValue();
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result = RegSetValueEx(hkey, RUN_VALUE, 0UL, REG_SZ, reinterpret_cast<LPCBYTE>(static_cast<LPCTSTR>(str)), (str.GetLength() + 1) * sizeof(TCHAR));
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}
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else
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{
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result = RegDeleteValue(hkey, RUN_VALUE);
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if (result == ERROR_FILE_NOT_FOUND)
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result = 0;
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}
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if (result != ERROR_SUCCESS)
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{
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ATLTRACE("Error:%u\n", result);
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MessageBox(hwnd, IDS_FAILED_CONFIGURE_STARTUP, MB_OK);
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}
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}
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}
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int Application::IsAutoStartEnabled() const
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{
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// Look at the service
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int service_result = 2;
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switch (m_service.GetStartup())
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{
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case SERVICE_AUTO_START:
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service_result = true;
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break;
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case SERVICE_DISABLED:
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service_result = false;
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break;
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}
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// Look at the Run key
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int run_result = 2;
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HKEY hkey;
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if (::RegOpenKeyEx(HKEY_LOCAL_MACHINE, RUN_KEY, 0, KEY_QUERY_VALUE | STANDARD_RIGHTS_READ, &hkey) == ERROR_SUCCESS)
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{
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DWORD dwType, cbData;
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TCHAR buffer[_MAX_PATH + 1];
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cbData = (_MAX_PATH + 1) * sizeof(TCHAR);
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if (::RegQueryValueEx(hkey, RUN_VALUE, NULL, &dwType, reinterpret_cast<LPBYTE>(buffer), &cbData) == ERROR_SUCCESS)
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{
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CString path(buffer, cbData - sizeof(TCHAR));
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ATLTRACE("Registry run key path: %s\n", (const TCHAR *)path);
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if (path == MakeRunKeyValue())
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run_result = true;
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else
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{
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// It's there - but it isn't us that it will start.
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run_result = 2;
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}
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}
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else
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{
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// The key doesn't exist.
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run_result = false;
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}
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}
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else
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{
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run_result = false;
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}
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// If the answers agree then return them. Otherwise we're indeterminate.
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if (run_result == service_result)
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return run_result;
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else
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return 2;
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}
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int WINAPI _tWinMain(HINSTANCE hInstance, HINSTANCE /*hPrevInstance*/, LPTSTR lpstrCmdLine, int nCmdShow)
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{
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// this resolves ATL window thunking problem when Microsoft Layer for Unicode (MSLU) is used
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::DefWindowProc(NULL, 0, 0, 0L);
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AtlInitCommonControls(ICC_BAR_CLASSES); // add flags to support other controls
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HRESULT hRes = _Module.Init(NULL, hInstance);
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ATLASSERT(SUCCEEDED(hRes));
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int nRet;
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{
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// Application object is destroyed prior to undoing everything above.
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Application app;
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nRet = app.Run(lpstrCmdLine, nCmdShow);
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}
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_Module.Term();
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return nRet;
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}
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