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// Copyright (c) 2016 Egor Tensin <egor@tensin.name>
// This file is part of the "Privilege check" project.
// For details, see https://github.com/egor-tensin/privilege-check.
// Distributed under the MIT License.
#include "error.hpp"
#include "os.hpp"
#include "process.hpp"
#include "resource.hpp"
#include "resource_ids.h"
#include "sid.hpp"
#include "token.hpp"
/* clang-format off */
#include <windows.h>
#include <commctrl.h>
#include <windowsx.h>
/* clang-format on */
#include <exception>
#include <string>
#if defined(_MSC_VER)
#pragma comment( \
linker, \
"/manifestdependency:\"type='win32' name='Microsoft.Windows.Common-Controls' version='6.0.0.0' processorArchitecture='*' publicKeyToken='6595b64144ccf1df' language='*'\"" \
)
#endif
namespace {
HWND get_dialog_item(HWND wnd, int id) {
const auto lbl = GetDlgItem(wnd, id);
if (lbl == NULL)
error::raise("GetDlgItem");
return lbl;
}
bool is_administrator() {
auto token = token::open_for_current_process(
token::permissions::query() | token::permissions::duplicate()
);
if (!token::get_linked(token))
token = token::get_for_identification(token);
return token::check_belongs(token, sid::builtin_administrators());
}
bool is_run_as_administrator() {
return token::check_belongs(token::dumb(), sid::builtin_administrators());
}
bool is_elevated() {
return token::query_elevation(token::open_for_current_process());
}
void decorate_elevate_button(HWND wnd, bool decorate) {
const auto btn = get_dialog_item(wnd, IDC_BUTTON_ELEVATE);
Button_SetElevationRequiredState(btn, !decorate);
}
DWORD get_integrity_level() {
return token::query_integrity_level(token::open_for_current_process());
}
std::wstring get_integrity_level_as_string() {
return token::integrity_level_to_string(get_integrity_level());
}
HWND get_label(HWND wnd, int id) {
return get_dialog_item(wnd, id);
}
void set_label(HWND wnd, int id, bool val) {
SetWindowTextW(get_label(wnd, id), val ? L"True" : L"False");
}
void set_label(HWND wnd, int id, const wchar_t* s) {
SetWindowTextW(get_label(wnd, id), s);
}
void set_label(HWND wnd, int id, const std::wstring& s) {
SetWindowTextW(get_label(wnd, id), s.c_str());
}
BOOL on_init_dialog(HWND wnd, HWND, LPARAM) {
try {
set_label(wnd, IDC_ADMINISTRATOR, is_administrator());
} catch (const Error& e) {
set_label(wnd, IDC_ADMINISTRATOR, L"N/A");
error::report(e);
}
try {
set_label(wnd, IDC_RUN_AS_ADMINISTRATOR, is_run_as_administrator());
} catch (const Error& e) {
set_label(wnd, IDC_RUN_AS_ADMINISTRATOR, L"N/A");
error::report(e);
}
if (os::is_vista_or_later()) {
try {
const auto elevated = is_elevated();
set_label(wnd, IDC_ELEVATED, elevated);
decorate_elevate_button(wnd, elevated);
} catch (const Error& e) {
set_label(wnd, IDC_ELEVATED, L"N/A");
error::report(e);
}
try {
set_label(wnd, IDC_INTEGRITY_LEVEL, get_integrity_level_as_string());
} catch (const Error& e) {
set_label(wnd, IDC_INTEGRITY_LEVEL, L"N/A");
error::report(e);
}
} else {
set_label(wnd, IDC_ELEVATED, L"N/A");
set_label(wnd, IDC_INTEGRITY_LEVEL, L"N/A");
}
return TRUE;
}
void report_already_elevated(HWND wnd) {
MessageBoxW(
wnd,
resource::load_string(IDS_ALREADY_ELEVATED_TEXT).c_str(),
resource::load_string(IDS_ALREADY_ELEVATED_CAPTION).c_str(),
MB_OK
);
}
void on_button_elevate_click(HWND wnd) {
bool as_admin = false;
try {
as_admin = is_run_as_administrator();
} catch (const Error& e) {
error::report(e);
return;
}
if (as_admin) {
report_already_elevated(wnd);
return;
}
try {
process::runas_self(wnd);
} catch (const Error& e) {
if (error::get_code(e) != ERROR_CANCELLED)
error::report(e);
return;
}
EndDialog(wnd, 1);
}
void on_command(HWND wnd, int id, HWND, unsigned int) {
switch (id) {
case IDC_BUTTON_ELEVATE:
on_button_elevate_click(wnd);
break;
case IDOK:
case IDCANCEL:
EndDialog(wnd, 0);
break;
}
}
void on_close(HWND wnd) {
EndDialog(wnd, 0);
}
INT_PTR CALLBACK dialog_main(HWND wnd, UINT msg, WPARAM wParam, LPARAM lParam) {
switch (msg) {
HANDLE_MSG(wnd, WM_INITDIALOG, on_init_dialog);
HANDLE_MSG(wnd, WM_COMMAND, on_command);
HANDLE_MSG(wnd, WM_CLOSE, on_close);
default:
return FALSE;
}
}
} // namespace
int APIENTRY wWinMain(HINSTANCE instance, HINSTANCE, wchar_t*, int) {
try {
const auto ret = DialogBoxW(instance, MAKEINTRESOURCE(IDD_MAINDIALOG), NULL, dialog_main);
if (ret == -1)
error::report(error::make("DialogBoxW"));
return static_cast<int>(ret);
} catch (const std::exception& e) {
error::report(e);
return 1;
}
}
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