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
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
|
/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtWebEngine module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <qlibrary.h>
#include <qoperatingsystemversion.h>
#include <qsysinfo.h>
#include <qt_windows.h>
#include <TlHelp32.h>
#include "../3rdparty/chromium/sandbox/win/src/process_mitigations.h"
#include "../3rdparty/chromium/sandbox/win/src/sandbox_factory.h"
#ifndef NDEBUG
#include "../3rdparty/chromium/base/command_line.h"
#endif
class User32DLL {
public:
User32DLL()
: setProcessDPIAware(0)
{
library.setFileName(QStringLiteral("User32"));
if (!library.load())
return;
setProcessDPIAware = (SetProcessDPIAware)library.resolve("SetProcessDPIAware");
}
bool isValid() const
{
return setProcessDPIAware;
}
typedef BOOL (WINAPI *SetProcessDPIAware)();
// Windows Vista onwards
SetProcessDPIAware setProcessDPIAware;
private:
QLibrary library;
};
// This must match PROCESS_DPI_AWARENESS in ShellScalingApi.h
enum DpiAwareness {
PROCESS_PER_UNAWARE = 0,
PROCESS_PER_SYSTEM_DPI_AWARE = 1,
PROCESS_PER_MONITOR_DPI_AWARE = 2
};
// Shell scaling library (Windows 8.1 onwards)
class ShcoreDLL {
public:
ShcoreDLL()
: getProcessDpiAwareness(0), setProcessDpiAwareness(0)
{
if (QOperatingSystemVersion::current() < QOperatingSystemVersion::Windows8_1)
return;
library.setFileName(QStringLiteral("SHCore"));
if (!library.load())
return;
getProcessDpiAwareness = (GetProcessDpiAwareness)library.resolve("GetProcessDpiAwareness");
setProcessDpiAwareness = (SetProcessDpiAwareness)library.resolve("SetProcessDpiAwareness");
}
bool isValid() const
{
return getProcessDpiAwareness && setProcessDpiAwareness;
}
typedef HRESULT (WINAPI *GetProcessDpiAwareness)(HANDLE, DpiAwareness *);
typedef HRESULT (WINAPI *SetProcessDpiAwareness)(DpiAwareness);
GetProcessDpiAwareness getProcessDpiAwareness;
SetProcessDpiAwareness setProcessDpiAwareness;
private:
QLibrary library;
};
static DWORD getParentProcessId()
{
HANDLE hSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
if (hSnapshot == INVALID_HANDLE_VALUE) {
qErrnoWarning(GetLastError(), "CreateToolhelp32Snapshot failed.");
return NULL;
}
PROCESSENTRY32 pe = {0};
pe.dwSize = sizeof(PROCESSENTRY32);
if (!Process32First(hSnapshot, &pe)) {
qWarning("Cannot retrieve parent process handle.");
return NULL;
}
DWORD parentPid = NULL;
const DWORD pid = GetCurrentProcessId();
do {
if (pe.th32ProcessID == pid) {
parentPid = pe.th32ParentProcessID;
break;
}
} while (Process32Next(hSnapshot, &pe));
CloseHandle(hSnapshot);
return parentPid;
}
namespace QtWebEngineCore {
extern __declspec(dllimport) sandbox::SandboxInterfaceInfo *staticSandboxInterfaceInfo(sandbox::SandboxInterfaceInfo *info = nullptr);
}
namespace QtWebEngineProcess {
// A duplicate of the function by same name in startup_helper_win.cc
static void InitializeSandboxInfo(sandbox::SandboxInterfaceInfo *info)
{
info->broker_services = sandbox::SandboxFactory::GetBrokerServices();
if (!info->broker_services) {
info->target_services = sandbox::SandboxFactory::GetTargetServices();
} else {
// Ensure the proper mitigations are enforced for the browser process.
sandbox::ApplyProcessMitigationsToCurrentProcess(
sandbox::MITIGATION_DEP | sandbox::MITIGATION_DEP_NO_ATL_THUNK |
sandbox::MITIGATION_HARDEN_TOKEN_IL_POLICY);
// Note: these mitigations are "post-startup". Some mitigations that need
// to be enabled sooner (e.g. MITIGATION_EXTENSION_POINT_DISABLE) are done
// so in Chrome_ELF.
}
}
// Initializes the staticlib copy of //base and //sandbox used for Windows sandboxing
void initializeStaticCopy(int argc, const char **argv)
{
#ifndef NDEBUG
// Initialize //base for debugging
base::CommandLine::Init(argc, argv);
logging::LoggingSettings settings;
settings.logging_dest = logging::LOG_TO_SYSTEM_DEBUG_LOG;
logging::InitLogging(settings);
#endif
sandbox::SandboxInterfaceInfo *info = new sandbox::SandboxInterfaceInfo();
memset(info, 0, sizeof(sandbox::SandboxInterfaceInfo));
InitializeSandboxInfo(info);
QtWebEngineCore::staticSandboxInterfaceInfo(info);
}
void initDpiAwareness()
{
ShcoreDLL shcore;
if (shcore.isValid()) {
DpiAwareness dpiAwareness = PROCESS_PER_MONITOR_DPI_AWARE;
const DWORD pid = getParentProcessId();
if (pid) {
HANDLE hProcess = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, pid);
DpiAwareness parentDpiAwareness;
HRESULT hr = shcore.getProcessDpiAwareness(hProcess, &parentDpiAwareness);
CloseHandle(hProcess);
if (hr == S_OK)
dpiAwareness = parentDpiAwareness;
}
if (shcore.setProcessDpiAwareness(dpiAwareness) != S_OK)
qErrnoWarning(GetLastError(), "SetProcessDPIAwareness failed.");
} else {
// Fallback. Use SetProcessDPIAware unconditionally.
User32DLL user32;
if (user32.isValid())
user32.setProcessDPIAware();
}
}
} // namespace QtWebEngineProcess
|
