1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
|
// 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.
#include <atlbase.h>
#include <atlcom.h>
#include <atlctl.h>
#include <initguid.h>
#include <shellapi.h>
#include "base/at_exit.h"
#include "base/command_line.h"
#include "base/file_util.h"
#include "base/memory/scoped_ptr.h"
#include "base/process/kill.h"
#include "base/strings/string16.h"
#include "base/win/scoped_com_initializer.h"
#include "base/win/scoped_comptr.h"
#include "base/win/scoped_handle.h"
#include "breakpad/src/client/windows/handler/exception_handler.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/installer/util/browser_distribution.h"
#include "win8/delegate_execute/command_execute_impl.h"
#include "win8/delegate_execute/crash_server_init.h"
#include "win8/delegate_execute/delegate_execute_operation.h"
#include "win8/delegate_execute/resource.h"
using namespace ATL;
// Usually classes derived from CAtlExeModuleT, or other types of ATL
// COM module classes statically define their CLSID at compile time through
// the use of various macros, and ATL internals takes care of creating the
// class objects and registering them. However, we need to register the same
// object with different CLSIDs depending on a runtime setting, so we handle
// that logic here, before the main ATL message loop runs.
class DelegateExecuteModule
: public ATL::CAtlExeModuleT< DelegateExecuteModule > {
public :
typedef ATL::CAtlExeModuleT<DelegateExecuteModule> ParentClass;
typedef CComObject<CommandExecuteImpl> ImplType;
DelegateExecuteModule()
: registration_token_(0) {
}
HRESULT PreMessageLoop(int nShowCmd) {
HRESULT hr = S_OK;
base::string16 clsid_string;
GUID clsid;
BrowserDistribution* dist = BrowserDistribution::GetDistribution();
if (!dist->GetCommandExecuteImplClsid(&clsid_string))
return E_FAIL;
hr = ::CLSIDFromString(clsid_string.c_str(), &clsid);
if (FAILED(hr))
return hr;
// We use the same class creation logic as ATL itself. See
// _ATL_OBJMAP_ENTRY::RegisterClassObject() in atlbase.h
hr = ImplType::_ClassFactoryCreatorClass::CreateInstance(
ImplType::_CreatorClass::CreateInstance, IID_IUnknown,
instance_.ReceiveVoid());
if (FAILED(hr))
return hr;
hr = ::CoRegisterClassObject(clsid, instance_, CLSCTX_LOCAL_SERVER,
REGCLS_MULTIPLEUSE | REGCLS_SUSPENDED, ®istration_token_);
if (FAILED(hr))
return hr;
return ParentClass::PreMessageLoop(nShowCmd);
}
HRESULT PostMessageLoop() {
if (registration_token_ != 0) {
::CoRevokeClassObject(registration_token_);
registration_token_ = 0;
}
instance_.Release();
return ParentClass::PostMessageLoop();
}
private:
base::win::ScopedComPtr<IUnknown> instance_;
DWORD registration_token_;
};
DelegateExecuteModule _AtlModule;
using delegate_execute::DelegateExecuteOperation;
using base::win::ScopedHandle;
int RelaunchChrome(const DelegateExecuteOperation& operation) {
AtlTrace("Relaunching [%ls] with flags [%ls]\n",
operation.mutex().c_str(), operation.relaunch_flags().c_str());
ScopedHandle mutex(OpenMutexW(SYNCHRONIZE, FALSE, operation.mutex().c_str()));
if (mutex.IsValid()) {
const int kWaitSeconds = 5;
DWORD result = ::WaitForSingleObject(mutex, kWaitSeconds * 1000);
if (result == WAIT_ABANDONED) {
// This is the normal case. Chrome exits and windows marks the mutex as
// abandoned.
} else if (result == WAIT_OBJECT_0) {
// This is unexpected. Check if somebody is not closing the mutex on
// RelaunchChromehelper, the mutex should not be closed.
AtlTrace("Unexpected release of the relaunch mutex!!\n");
} else if (result == WAIT_TIMEOUT) {
// This could mean that Chrome is hung. Proceed to exterminate.
DWORD pid = operation.GetParentPid();
AtlTrace("%ds timeout. Killing Chrome %d\n", kWaitSeconds, pid);
base::KillProcessById(pid, 0, false);
} else {
AtlTrace("Failed to wait for relaunch mutex, result is 0x%x\n", result);
}
} else {
// It is possible that chrome exits so fast that the mutex is not there.
AtlTrace("No relaunch mutex found\n");
}
base::win::ScopedCOMInitializer com_initializer;
base::string16 relaunch_flags(operation.relaunch_flags());
SHELLEXECUTEINFO sei = { sizeof(sei) };
sei.fMask = SEE_MASK_FLAG_LOG_USAGE;
sei.nShow = SW_SHOWNORMAL;
sei.lpFile = operation.shortcut().value().c_str();
sei.lpParameters = relaunch_flags.c_str();
AtlTrace(L"Relaunching Chrome via shortcut [%ls]\n", sei.lpFile);
if (!::ShellExecuteExW(&sei)) {
int error = HRESULT_FROM_WIN32(::GetLastError());
AtlTrace("ShellExecute returned 0x%08X\n", error);
return error;
}
return S_OK;
}
extern "C" int WINAPI _tWinMain(HINSTANCE , HINSTANCE, LPTSTR, int nShowCmd) {
scoped_ptr<google_breakpad::ExceptionHandler> breakpad =
delegate_execute::InitializeCrashReporting();
base::AtExitManager exit_manager;
AtlTrace("delegate_execute enter\n");
CommandLine::Init(0, NULL);
HRESULT ret_code = E_UNEXPECTED;
DelegateExecuteOperation operation;
if (operation.Init(CommandLine::ForCurrentProcess())) {
switch (operation.operation_type()) {
case DelegateExecuteOperation::DELEGATE_EXECUTE:
ret_code = _AtlModule.WinMain(nShowCmd);
break;
case DelegateExecuteOperation::RELAUNCH_CHROME:
ret_code = RelaunchChrome(operation);
break;
default:
NOTREACHED();
}
}
AtlTrace("delegate_execute exit, code = %d\n", ret_code);
return ret_code;
}
|