This repository was archived by the owner on Jun 24, 2022. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 2k
Expand file tree
/
Copy pathDLLLauncherMain.cpp
More file actions
217 lines (184 loc) · 7.86 KB
/
DLLLauncherMain.cpp
File metadata and controls
217 lines (184 loc) · 7.86 KB
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
207
208
209
210
211
212
213
214
215
216
217
/*
* Copyright (C) 2012-2015 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
// This file contains code for a launcher executable for WebKit apps. When compiled into foo.exe, it
// will set PATH so that Apple Application Support DLLs can be found, then will load foo.dll and
// call its dllLauncherEntryPoint function, which should be declared like so:
// extern "C" __declspec(dllexport) int WINAPI dllLauncherEntryPoint(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpstCmdLine, int nCmdShow);
// If USE_CONSOLE_ENTRY_POINT is defined, this function will be called instead:
// extern "C" __declspec(dllexport) int WINAPI dllLauncherEntryPoint(int argc, const char* argv[]);
#include <shlwapi.h>
#include <string>
#include <vector>
#include <windows.h>
static void enableTerminationOnHeapCorruption()
{
HEAP_INFORMATION_CLASS heapEnableTerminationOnCorruption = static_cast<HEAP_INFORMATION_CLASS>(1);
HeapSetInformation(0, heapEnableTerminationOnCorruption, 0, 0);
}
static std::wstring copyEnvironmentVariable(const std::wstring& variable)
{
DWORD length = ::GetEnvironmentVariableW(variable.c_str(), 0, 0);
if (!length)
return std::wstring();
std::vector<wchar_t> buffer(length);
if (!GetEnvironmentVariable(variable.c_str(), &buffer[0], buffer.size()) || !buffer[0])
return std::wstring();
return &buffer[0];
}
#if !defined(WIN_CAIRO)
static std::wstring getStringValue(HKEY key, const std::wstring& valueName)
{
DWORD type = 0;
DWORD bufferSize = 0;
if (::RegQueryValueExW(key, valueName.c_str(), 0, &type, 0, &bufferSize) != ERROR_SUCCESS || type != REG_SZ)
return std::wstring();
std::vector<wchar_t> buffer(bufferSize / sizeof(wchar_t));
if (::RegQueryValueExW(key, valueName.c_str(), 0, &type, reinterpret_cast<LPBYTE>(&buffer[0]), &bufferSize) != ERROR_SUCCESS)
return std::wstring();
return &buffer[0];
}
static std::wstring applePathFromRegistry(const std::wstring& key, const std::wstring& value)
{
HKEY applePathKey = 0;
if (::RegOpenKeyExW(HKEY_LOCAL_MACHINE, key.c_str(), 0, KEY_READ, &applePathKey) != ERROR_SUCCESS)
return std::wstring();
std::wstring path = getStringValue(applePathKey, value);
::RegCloseKey(applePathKey);
return path;
}
static std::wstring appleApplicationSupportDirectory()
{
return applePathFromRegistry(L"SOFTWARE\\Apple Inc.\\Apple Application Support", L"InstallDir");
}
static bool prependPath(const std::wstring& directoryToPrepend)
{
std::wstring pathVariable = L"PATH";
std::wstring oldPath = copyEnvironmentVariable(pathVariable);
std::wstring newPath = directoryToPrepend + L';' + oldPath;
return ::SetEnvironmentVariableW(pathVariable.c_str(), newPath.c_str());
}
#endif
static int fatalError(const std::wstring& programName, const std::wstring& message)
{
std::wstring caption = programName + L" can't open.";
#if USE_CONSOLE_ENTRY_POINT
fwprintf(stderr, L"%s\n%s\n", caption.c_str(), message.c_str());
#else
::MessageBoxW(0, message.c_str(), caption.c_str(), MB_ICONERROR);
#endif
return 1;
}
static bool directoryExists(const std::wstring& path)
{
DWORD attrib = ::GetFileAttributes(path.c_str());
return ((attrib != INVALID_FILE_ATTRIBUTES) && (attrib & FILE_ATTRIBUTE_DIRECTORY));
}
static bool modifyPath(const std::wstring& programName)
{
#ifdef WIN_CAIRO
std::wstring pathWinCairo = copyEnvironmentVariable(L"WEBKIT_LIBRARIES");
if (!directoryExists(pathWinCairo))
return true;
#if defined(_M_X64)
pathWinCairo += L"\\bin64";
#else
pathWinCairo += L"\\bin32";
#endif
if (!SetDllDirectory(pathWinCairo.c_str())) {
fatalError(programName, L"Failed to SetDllDirectory");
return false;
}
return true;
#else
const std::wstring& pathPrefix = appleApplicationSupportDirectory();
if (!directoryExists(pathPrefix)) {
fatalError(programName, L"Failed to determine path to AAS directory.");
return false;
}
if (prependPath(pathPrefix))
return true;
fatalError(programName, L"Failed to modify PATH environment variable.");
return false;
#endif
}
static std::wstring getLastErrorString(HRESULT hr)
{
static const DWORD kFlags = FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS;
static const size_t bufSize = 4096;
wchar_t errorMessage[bufSize];
DWORD len = ::FormatMessageW(kFlags, 0, hr, 0, errorMessage, bufSize, 0);
if (len >= bufSize)
len = bufSize - 1;
errorMessage[len] = 0;
return errorMessage;
}
#if USE_CONSOLE_ENTRY_POINT
int main(int argc, const char* argv[])
#else
int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPWSTR lpstrCmdLine, int nCmdShow)
#endif
{
enableTerminationOnHeapCorruption();
// Get the path of our executable.
wchar_t exePath[MAX_PATH];
if (!::GetModuleFileNameW(0, exePath, _countof(exePath)))
return fatalError(L"Unknown Program", L"Failed to determine name of executable: " + getLastErrorString(::GetLastError()));
::PathRemoveExtensionW(exePath);
std::wstring programName = ::PathFindFileNameW(exePath);
if (!modifyPath(programName))
return 1;
// Load our corresponding DLL.
std::wstring dllName = programName + L"Lib.dll";
if (!::PathRemoveFileSpecW(exePath))
return fatalError(programName, L"::PathRemoveFileSpecW failed: " + getLastErrorString(::GetLastError()));
if (!::PathAppendW(exePath, dllName.c_str()))
return fatalError(programName, L"::PathAppendW failed: " + getLastErrorString(::GetLastError()));
HMODULE module = ::LoadLibraryW(exePath);
if (!module)
return fatalError(programName, L"::LoadLibraryW failed: \npath=" + std::wstring(exePath) + L"\n" + getLastErrorString(::GetLastError()));
#if USE_CONSOLE_ENTRY_POINT
typedef int (WINAPI*EntryPoint)(int, const char*[]);
#if defined _M_AMD64 || defined _WIN64
const char* entryPointName = "dllLauncherEntryPoint";
#else
const char* entryPointName = "_dllLauncherEntryPoint@8";
#endif
#else
typedef int (WINAPI*EntryPoint)(HINSTANCE, HINSTANCE, LPWSTR, int);
#if defined _M_AMD64 || defined _WIN64
const char* entryPointName = "dllLauncherEntryPoint";
#else
const char* entryPointName = "_dllLauncherEntryPoint@16";
#endif
#endif
EntryPoint entryPoint = reinterpret_cast<EntryPoint>(::GetProcAddress(module, entryPointName));
if (!entryPoint)
return fatalError(programName, L"Failed to find dllLauncherEntryPoint function: " + getLastErrorString(::GetLastError()));
#if USE_CONSOLE_ENTRY_POINT
return entryPoint(argc, argv);
#else
return entryPoint(hInstance, hPrevInstance, lpstrCmdLine, nCmdShow);
#endif
}