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Bug 1628409 p1 - Move Windows version info determination into a reusa…
…ble module r=rhelmer,chutten,mhowell Differential Revision: https://phabricator.services.mozilla.com/D70548 --HG-- extra : moz-landing-system : lando
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Michael Cooper
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Apr 13, 2020
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,124 @@ | ||
| /* This Source Code Form is subject to the terms of the Mozilla Public | ||
| * License, v. 2.0. If a copy of the MPL was not distributed with this | ||
| * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | ||
|
|
||
| "use strict"; | ||
|
|
||
| var EXPORTED_SYMBOLS = ["WindowsVersionInfo"]; | ||
|
|
||
| ChromeUtils.defineModuleGetter( | ||
| this, | ||
| "AppConstants", | ||
| "resource://gre/modules/AppConstants.jsm" | ||
| ); | ||
| ChromeUtils.defineModuleGetter( | ||
| this, | ||
| "ctypes", | ||
| "resource://gre/modules/ctypes.jsm" | ||
| ); | ||
|
|
||
| const BYTE = ctypes.uint8_t; | ||
| const WORD = ctypes.uint16_t; | ||
| const DWORD = ctypes.uint32_t; | ||
| const WCHAR = ctypes.char16_t; | ||
| const BOOL = ctypes.int; | ||
|
|
||
| var WindowsVersionInfo = { | ||
| UNKNOWN_VERSION_INFO: { | ||
| servicePackMajor: null, | ||
| servicePackMinor: null, | ||
| buildNumber: null, | ||
| }, | ||
|
|
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| /** | ||
| * Gets the service pack and build number on Windows platforms. | ||
| * | ||
| * @param opts {Object} keyword arguments | ||
| * @param opts.throwOnError {boolean} Optional, defaults to true. If set to | ||
| * false will return an object with keys set to null instead of throwing an | ||
| * error. If set to true, errors will be thrown instead. | ||
| * @throws If `throwOnError` is true and version information cannot be | ||
| * determined. | ||
| * @return {object} An object containing keys `servicePackMajor`, | ||
| * `servicePackMinor`, and `buildNumber`. If `throwOnError` is false, these | ||
| * values may be null. | ||
| */ | ||
| get({ throwOnError = true } = {}) { | ||
| function throwOrUnknown(err) { | ||
| if (throwOnError) { | ||
| throw err; | ||
| } | ||
| Cu.reportError(err); | ||
| return WindowsVersionInfo.UNKNOWN_VERSION_INFO; | ||
| } | ||
|
|
||
| if (AppConstants.platform !== "win") { | ||
| return throwOrUnknown( | ||
| WindowsVersionInfo.NotWindowsError( | ||
| `Cannot get Windows version info on platform ${AppConstants.platform}` | ||
| ) | ||
| ); | ||
| } | ||
|
|
||
| // This structure is described at: | ||
| // http://msdn.microsoft.com/en-us/library/ms724833%28v=vs.85%29.aspx | ||
| const SZCSDVERSIONLENGTH = 128; | ||
| const OSVERSIONINFOEXW = new ctypes.StructType("OSVERSIONINFOEXW", [ | ||
| { dwOSVersionInfoSize: DWORD }, | ||
| { dwMajorVersion: DWORD }, | ||
| { dwMinorVersion: DWORD }, | ||
| { dwBuildNumber: DWORD }, | ||
| { dwPlatformId: DWORD }, | ||
| { szCSDVersion: ctypes.ArrayType(WCHAR, SZCSDVERSIONLENGTH) }, | ||
| { wServicePackMajor: WORD }, | ||
| { wServicePackMinor: WORD }, | ||
| { wSuiteMask: WORD }, | ||
| { wProductType: BYTE }, | ||
| { wReserved: BYTE }, | ||
| ]); | ||
|
|
||
| let kernel32; | ||
| try { | ||
| kernel32 = ctypes.open("kernel32"); | ||
| } catch (err) { | ||
| return throwOrUnknown( | ||
| new WindowsVersionInfo.CannotOpenKernelError( | ||
| `Unable to open kernel32! ${err}` | ||
| ) | ||
| ); | ||
| } | ||
|
|
||
| try { | ||
| let GetVersionEx = kernel32.declare( | ||
| "GetVersionExW", | ||
| ctypes.winapi_abi, | ||
| BOOL, | ||
| OSVERSIONINFOEXW.ptr | ||
| ); | ||
| let winVer = OSVERSIONINFOEXW(); | ||
| winVer.dwOSVersionInfoSize = OSVERSIONINFOEXW.size; | ||
|
|
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| if (GetVersionEx(winVer.address()) === 0) { | ||
| throw new WindowsVersionInfo.GetVersionExError( | ||
| "Failure in GetVersionEx (returned 0)" | ||
| ); | ||
| } | ||
|
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| return { | ||
| servicePackMajor: winVer.wServicePackMajor, | ||
| servicePackMinor: winVer.wServicePackMinor, | ||
| buildNumber: winVer.dwBuildNumber, | ||
| }; | ||
| } catch (err) { | ||
| return throwOrUnknown(err); | ||
| } finally { | ||
| if (kernel32) { | ||
| kernel32.close(); | ||
| } | ||
| } | ||
| }, | ||
|
|
||
| CannotOpenKernelError: class extends Error {}, | ||
| GetVersionExError: class extends Error {}, | ||
| NotWindowsError: class extends Error {}, | ||
| }; |
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