dolphin/Source/Core/WinUpdater/Main.cpp

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// Copyright 2018 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#include <windows.h>
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#include <ShlObj.h>
#include <shellapi.h>
#include <optional>
#include <string>
#include <vector>
#include "Common/StringUtil.h"
#include "UpdaterCommon/UI.h"
#include "UpdaterCommon/UpdaterCommon.h"
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namespace
{
std::vector<std::string> CommandLineToUtf8Argv(PCWSTR command_line)
{
int nargs;
LPWSTR* tokenized = CommandLineToArgvW(command_line, &nargs);
if (!tokenized)
return {};
std::vector<std::string> argv(nargs);
for (int i = 0; i < nargs; ++i)
{
argv[i] = UTF16ToUTF8(tokenized[i]);
}
LocalFree(tokenized);
return argv;
}
std::optional<std::wstring> GetModuleName(HINSTANCE hInstance)
{
std::wstring name;
DWORD max_size = 50; // Start with space for 50 characters and grow if needed
name.resize(max_size);
DWORD size;
while ((size = GetModuleFileNameW(hInstance, name.data(), max_size)) == max_size &&
GetLastError() == ERROR_INSUFFICIENT_BUFFER)
{
max_size *= 2;
name.resize(max_size);
}
if (size == 0)
{
return {};
}
name.resize(size);
return name;
}
}; // namespace
int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PWSTR pCmdLine, int nCmdShow)
{
if (lstrlenW(pCmdLine) == 0)
{
MessageBox(nullptr,
L"This updater is not meant to be launched directly. Configure Auto-Update in "
"Dolphin's settings instead.",
L"Error", MB_ICONERROR);
return 1;
}
// Test for write permissions
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bool need_admin = false;
FILE* test_fh = fopen("Updater.log", "w");
if (test_fh == nullptr)
need_admin = true;
else
fclose(test_fh);
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if (need_admin)
{
if (IsUserAnAdmin())
{
MessageBox(nullptr, L"Failed to write to directory despite administrator priviliges.",
L"Error", MB_ICONERROR);
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return 1;
}
auto path = GetModuleName(hInstance);
if (!path)
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{
MessageBox(nullptr, L"Failed to get updater filename.", L"Error", MB_ICONERROR);
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return 1;
}
// Relaunch the updater as administrator
ShellExecuteW(nullptr, L"runas", path->c_str(), pCmdLine, NULL, SW_SHOW);
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return 0;
}
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std::vector<std::string> args = CommandLineToUtf8Argv(pCmdLine);
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return RunUpdater(args) ? 0 : 1;
}