win8/delegate_execute/delegate_execute.cc

   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 #include "build/intsafe_workaround.h"
   6
   7 #include <atlbase.h>
   8 #include <atlcom.h>
   9 #include <atlctl.h>
  10 #include <initguid.h>
  11 #include <shellapi.h>
  12
  13 #include "base/at_exit.h"
  14 #include "base/command_line.h"
  15 #include "base/file_util.h"
  16 #include "base/memory/scoped_ptr.h"
  17 #include "base/process/kill.h"
  18 #include "base/strings/string16.h"
  19 #include "base/win/scoped_com_initializer.h"
  20 #include "base/win/scoped_handle.h"
  21 #include "breakpad/src/client/windows/handler/exception_handler.h"
  22 #include "chrome/common/chrome_switches.h"
  23 #include "win8/delegate_execute/command_execute_impl.h"
  24 #include "win8/delegate_execute/crash_server_init.h"
  25 #include "win8/delegate_execute/delegate_execute_operation.h"
  26 #include "win8/delegate_execute/resource.h"
  27
  28 using namespace ATL;
  29
  30 class DelegateExecuteModule
  31     : public ATL::CAtlExeModuleT< DelegateExecuteModule > {
  32  public :
  33   typedef ATL::CAtlExeModuleT<DelegateExecuteModule> ParentClass;
  34
  35   HRESULT RegisterServer(BOOL reg_type_lib) {
  36     return ParentClass::RegisterServer(FALSE);
  37   }
  38
  39   virtual HRESULT AddCommonRGSReplacements(IRegistrarBase* registrar) throw() {
  40     AtlTrace(L"In %hs\n", __FUNCTION__);
  41     HRESULT hr = ParentClass::AddCommonRGSReplacements(registrar);
  42     if (FAILED(hr))
  43       return hr;
  44
  45     wchar_t delegate_execute_clsid[MAX_PATH] = {0};
  46     if (!StringFromGUID2(__uuidof(CommandExecuteImpl), delegate_execute_clsid,
  47                          ARRAYSIZE(delegate_execute_clsid))) {
  48       ATLASSERT(false);
  49       return E_FAIL;
  50     }
  51
  52     hr = registrar->AddReplacement(L"DELEGATE_EXECUTE_CLSID",
  53                                    delegate_execute_clsid);
  54     ATLASSERT(SUCCEEDED(hr));
  55     return hr;
  56   }
  57 };
  58
  59 DelegateExecuteModule _AtlModule;
  60
  61 using delegate_execute::DelegateExecuteOperation;
  62 using base::win::ScopedHandle;
  63
  64 int RelaunchChrome(const DelegateExecuteOperation& operation) {
  65   AtlTrace("Relaunching [%ls] with flags [%s]\n",
  66            operation.mutex().c_str(), operation.relaunch_flags());
  67   ScopedHandle mutex(OpenMutexW(SYNCHRONIZE, FALSE, operation.mutex().c_str()));
  68   if (mutex.IsValid()) {
  69     const int kWaitSeconds = 5;
  70     DWORD result = ::WaitForSingleObject(mutex, kWaitSeconds * 1000);
  71     if (result == WAIT_ABANDONED) {
  72       // This is the normal case. Chrome exits and windows marks the mutex as
  73       // abandoned.
  74     } else if (result == WAIT_OBJECT_0) {
  75       // This is unexpected. Check if somebody is not closing the mutex on
  76       // RelaunchChromehelper, the mutex should not be closed.
  77       AtlTrace("Unexpected release of the relaunch mutex!!\n");
  78     } else if (result == WAIT_TIMEOUT) {
  79       // This could mean that Chrome is hung. Proceed to exterminate.
  80       DWORD pid = operation.GetParentPid();
  81       AtlTrace("%ds timeout. Killing Chrome %d\n", kWaitSeconds, pid);
  82       base::KillProcessById(pid, 0, false);
  83     } else {
  84       AtlTrace("Failed to wait for relaunch mutex, result is 0x%x\n", result);
  85     }
  86   } else {
  87     // It is possible that chrome exits so fast that the mutex is not there.
  88     AtlTrace("No relaunch mutex found\n");
  89   }
  90
  91   base::win::ScopedCOMInitializer com_initializer;
  92
  93   string16 relaunch_flags(operation.relaunch_flags());
  94   SHELLEXECUTEINFO sei = { sizeof(sei) };
  95   sei.fMask = SEE_MASK_FLAG_LOG_USAGE;
  96   sei.nShow = SW_SHOWNORMAL;
  97   sei.lpFile = operation.shortcut().value().c_str();
  98   sei.lpParameters = relaunch_flags.c_str();
  99
 100   AtlTrace(L"Relaunching Chrome via shortcut [%ls]\n", sei.lpFile);
 101
 102   if (!::ShellExecuteExW(&sei)) {
 103     int error = HRESULT_FROM_WIN32(::GetLastError());
 104     AtlTrace("ShellExecute returned 0x%08X\n", error);
 105     return error;
 106   }
 107   return S_OK;
 108 }
 109
 110 extern "C" int WINAPI _tWinMain(HINSTANCE , HINSTANCE, LPTSTR, int nShowCmd) {
 111   scoped_ptr<google_breakpad::ExceptionHandler> breakpad =
 112       delegate_execute::InitializeCrashReporting();
 113
 114   base::AtExitManager exit_manager;
 115   AtlTrace("delegate_execute enter\n");
 116
 117   CommandLine::Init(0, NULL);
 118   HRESULT ret_code = E_UNEXPECTED;
 119   DelegateExecuteOperation operation;
 120   if (operation.Init(CommandLine::ForCurrentProcess())) {
 121     switch (operation.operation_type()) {
 122       case DelegateExecuteOperation::DELEGATE_EXECUTE:
 123         ret_code = _AtlModule.WinMain(nShowCmd);
 124         break;
 125       case DelegateExecuteOperation::RELAUNCH_CHROME:
 126         ret_code = RelaunchChrome(operation);
 127         break;
 128       default:
 129         NOTREACHED();
 130     }
 131   }
 132   AtlTrace("delegate_execute exit, code = %d\n", ret_code);
 133   return ret_code;
 134 }