forked from mirrors/gecko-dev
112 lines
3.4 KiB
JavaScript
112 lines
3.4 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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import { AppConstants } from "resource://gre/modules/AppConstants.sys.mjs";
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import { ctypes } from "resource://gre/modules/ctypes.sys.mjs";
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const BYTE = ctypes.uint8_t;
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const WORD = ctypes.uint16_t;
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const DWORD = ctypes.uint32_t;
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const WCHAR = ctypes.char16_t;
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const BOOL = ctypes.int;
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export var WindowsVersionInfo = {
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UNKNOWN_VERSION_INFO: {
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servicePackMajor: null,
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servicePackMinor: null,
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buildNumber: null,
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},
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/**
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* Gets the service pack and build number on Windows platforms.
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*
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* @param opts {Object} keyword arguments
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* @param opts.throwOnError {boolean} Optional, defaults to true. If set to
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* false will return an object with keys set to null instead of throwing an
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* error. If set to true, errors will be thrown instead.
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* @throws If `throwOnError` is true and version information cannot be
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* determined.
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* @return {object} An object containing keys `servicePackMajor`,
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* `servicePackMinor`, and `buildNumber`. If `throwOnError` is false, these
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* values may be null.
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*/
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get({ throwOnError = true } = {}) {
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function throwOrUnknown(err) {
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if (throwOnError) {
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throw err;
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}
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console.error(err);
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return WindowsVersionInfo.UNKNOWN_VERSION_INFO;
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}
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if (AppConstants.platform !== "win") {
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return throwOrUnknown(
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WindowsVersionInfo.NotWindowsError(
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`Cannot get Windows version info on platform ${AppConstants.platform}`
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)
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);
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}
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// This structure is described at:
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// http://msdn.microsoft.com/en-us/library/ms724833%28v=vs.85%29.aspx
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const SZCSDVERSIONLENGTH = 128;
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const OSVERSIONINFOEXW = new ctypes.StructType("OSVERSIONINFOEXW", [
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{ dwOSVersionInfoSize: DWORD },
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{ dwMajorVersion: DWORD },
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{ dwMinorVersion: DWORD },
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{ dwBuildNumber: DWORD },
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{ dwPlatformId: DWORD },
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{ szCSDVersion: ctypes.ArrayType(WCHAR, SZCSDVERSIONLENGTH) },
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{ wServicePackMajor: WORD },
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{ wServicePackMinor: WORD },
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{ wSuiteMask: WORD },
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{ wProductType: BYTE },
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{ wReserved: BYTE },
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]);
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let kernel32;
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try {
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kernel32 = ctypes.open("kernel32");
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} catch (err) {
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return throwOrUnknown(
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new WindowsVersionInfo.CannotOpenKernelError(
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`Unable to open kernel32! ${err}`
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)
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);
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}
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try {
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let GetVersionEx = kernel32.declare(
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"GetVersionExW",
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ctypes.winapi_abi,
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BOOL,
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OSVERSIONINFOEXW.ptr
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);
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let winVer = OSVERSIONINFOEXW();
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winVer.dwOSVersionInfoSize = OSVERSIONINFOEXW.size;
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if (GetVersionEx(winVer.address()) === 0) {
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throw new WindowsVersionInfo.GetVersionExError(
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"Failure in GetVersionEx (returned 0)"
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);
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}
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return {
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servicePackMajor: winVer.wServicePackMajor,
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servicePackMinor: winVer.wServicePackMinor,
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buildNumber: winVer.dwBuildNumber,
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};
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} catch (err) {
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return throwOrUnknown(err);
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} finally {
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if (kernel32) {
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kernel32.close();
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}
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}
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},
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CannotOpenKernelError: class extends Error {},
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GetVersionExError: class extends Error {},
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NotWindowsError: class extends Error {},
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};
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