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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /toolkit/modules/subprocess/subprocess_win.jsm
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
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diff --git a/toolkit/modules/subprocess/subprocess_win.jsm b/toolkit/modules/subprocess/subprocess_win.jsm
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+/* -*- Mode: indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* vim: set sts=2 sw=2 et tw=80: */
+/* 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";
+
+/* eslint-disable mozilla/balanced-listeners */
+
+/* exported SubprocessImpl */
+
+/* globals BaseProcess, PromiseWorker */
+
+var {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components;
+
+var EXPORTED_SYMBOLS = ["SubprocessImpl"];
+
+Cu.import("resource://gre/modules/AppConstants.jsm");
+Cu.import("resource://gre/modules/ctypes.jsm");
+Cu.import("resource://gre/modules/osfile.jsm");
+Cu.import("resource://gre/modules/Services.jsm");
+Cu.import("resource://gre/modules/Task.jsm");
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+Cu.import("resource://gre/modules/subprocess/subprocess_common.jsm");
+
+XPCOMUtils.defineLazyServiceGetter(this, "env", "@mozilla.org/process/environment;1", "nsIEnvironment");
+
+Services.scriptloader.loadSubScript("resource://gre/modules/subprocess/subprocess_shared.js", this);
+Services.scriptloader.loadSubScript("resource://gre/modules/subprocess/subprocess_shared_win.js", this);
+
+class WinPromiseWorker extends PromiseWorker {
+ constructor(...args) {
+ super(...args);
+
+ this.signalEvent = libc.CreateSemaphoreW(null, 0, 32, null);
+
+ this.call("init", [{
+ breakAwayFromJob: !AppConstants.isPlatformAndVersionAtLeast("win", "6.2"),
+ comspec: env.get("COMSPEC"),
+ signalEvent: String(ctypes.cast(this.signalEvent, ctypes.uintptr_t).value),
+ }]);
+ }
+
+ signalWorker() {
+ libc.ReleaseSemaphore(this.signalEvent, 1, null);
+ }
+
+ postMessage(...args) {
+ this.signalWorker();
+ return super.postMessage(...args);
+ }
+}
+
+class Process extends BaseProcess {
+ static get WORKER_URL() {
+ return "resource://gre/modules/subprocess/subprocess_worker_win.js";
+ }
+
+ static get WorkerClass() {
+ return WinPromiseWorker;
+ }
+}
+
+var SubprocessWin = {
+ Process,
+
+ call(options) {
+ return Process.create(options);
+ },
+
+ * getEnvironment() {
+ let env = libc.GetEnvironmentStringsW();
+ try {
+ for (let p = env, q = env; ; p = p.increment()) {
+ if (p.contents == "\0") {
+ if (String(p) == String(q)) {
+ break;
+ }
+
+ let str = q.readString();
+ q = p.increment();
+
+ let idx = str.indexOf("=");
+ if (idx == 0) {
+ idx = str.indexOf("=", 1);
+ }
+
+ if (idx >= 0) {
+ yield [str.slice(0, idx), str.slice(idx + 1)];
+ }
+ }
+ }
+ } finally {
+ libc.FreeEnvironmentStringsW(env);
+ }
+ },
+
+ isExecutableFile: Task.async(function* (path) {
+ if (!OS.Path.split(path).absolute) {
+ return false;
+ }
+
+ try {
+ let info = yield OS.File.stat(path);
+ return !(info.isDir || info.isSymlink);
+ } catch (e) {
+ return false;
+ }
+ }),
+
+ /**
+ * Searches for the given executable file in the system executable
+ * file paths as specified by the PATH environment variable.
+ *
+ * On Windows, if the unadorned filename cannot be found, the
+ * extensions in the semicolon-separated list in the PATHEXT
+ * environment variable are successively appended to the original
+ * name and searched for in turn.
+ *
+ * @param {string} bin
+ * The name of the executable to find.
+ * @param {object} environment
+ * An object containing a key for each environment variable to be used
+ * in the search.
+ * @returns {Promise<string>}
+ */
+ pathSearch: Task.async(function* (bin, environment) {
+ let split = OS.Path.split(bin);
+ if (split.absolute) {
+ if (yield this.isExecutableFile(bin)) {
+ return bin;
+ }
+ let error = new Error(`File at path "${bin}" does not exist, or is not a normal file`);
+ error.errorCode = SubprocessConstants.ERROR_BAD_EXECUTABLE;
+ throw error;
+ }
+
+ let dirs = [];
+ let exts = [];
+ if (environment.PATH) {
+ dirs = environment.PATH.split(";");
+ }
+ if (environment.PATHEXT) {
+ exts = environment.PATHEXT.split(";");
+ }
+
+ for (let dir of dirs) {
+ let path = OS.Path.join(dir, bin);
+
+ if (yield this.isExecutableFile(path)) {
+ return path;
+ }
+
+ for (let ext of exts) {
+ let file = path + ext;
+
+ if (yield this.isExecutableFile(file)) {
+ return file;
+ }
+ }
+ }
+ let error = new Error(`Executable not found: ${bin}`);
+ error.errorCode = SubprocessConstants.ERROR_BAD_EXECUTABLE;
+ throw error;
+ }),
+};
+
+var SubprocessImpl = SubprocessWin;