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d1dfdb8a14
MozReview-Commit-ID: Hhm4YBansg1 --HG-- extra : rebase_source : 3cb49159fa3f5dae12e4eb21f22e747850fdf184
168 lines
4.5 KiB
JavaScript
168 lines
4.5 KiB
JavaScript
/* -*- Mode: indent-tabs-mode: nil; js-indent-level: 2 -*- */
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/* vim: set sts=2 sw=2 et tw=80: */
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/* 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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"use strict";
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/* eslint-disable mozilla/balanced-listeners */
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/* exported SubprocessImpl */
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var {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components;
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var EXPORTED_SYMBOLS = ["SubprocessImpl"];
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Cu.import("resource://gre/modules/AppConstants.jsm");
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Cu.import("resource://gre/modules/ctypes.jsm");
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Cu.import("resource://gre/modules/osfile.jsm");
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Cu.import("resource://gre/modules/Services.jsm");
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Cu.import("resource://gre/modules/XPCOMUtils.jsm");
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Cu.import("resource://gre/modules/subprocess/subprocess_common.jsm");
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XPCOMUtils.defineLazyServiceGetter(this, "env", "@mozilla.org/process/environment;1", "nsIEnvironment");
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/* import-globals-from subprocess_shared.js */
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/* import-globals-from subprocess_shared_win.js */
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Services.scriptloader.loadSubScript("resource://gre/modules/subprocess/subprocess_shared.js", this);
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Services.scriptloader.loadSubScript("resource://gre/modules/subprocess/subprocess_shared_win.js", this);
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class WinPromiseWorker extends PromiseWorker {
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constructor(...args) {
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super(...args);
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this.signalEvent = libc.CreateSemaphoreW(null, 0, 32, null);
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this.call("init", [{
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breakAwayFromJob: !AppConstants.isPlatformAndVersionAtLeast("win", "6.2"),
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comspec: env.get("COMSPEC"),
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signalEvent: String(ctypes.cast(this.signalEvent, ctypes.uintptr_t).value),
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}]);
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}
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signalWorker() {
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libc.ReleaseSemaphore(this.signalEvent, 1, null);
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}
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postMessage(...args) {
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this.signalWorker();
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return super.postMessage(...args);
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}
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}
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class Process extends BaseProcess {
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static get WORKER_URL() {
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return "resource://gre/modules/subprocess/subprocess_worker_win.js";
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}
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static get WorkerClass() {
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return WinPromiseWorker;
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}
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}
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var SubprocessWin = {
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Process,
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call(options) {
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return Process.create(options);
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},
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* getEnvironment() {
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let env = libc.GetEnvironmentStringsW();
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try {
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for (let p = env, q = env; ; p = p.increment()) {
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if (p.contents == "\0") {
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if (String(p) == String(q)) {
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break;
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}
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let str = q.readString();
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q = p.increment();
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let idx = str.indexOf("=");
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if (idx == 0) {
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idx = str.indexOf("=", 1);
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}
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if (idx >= 0) {
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yield [str.slice(0, idx), str.slice(idx + 1)];
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}
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}
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}
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} finally {
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libc.FreeEnvironmentStringsW(env);
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}
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},
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async isExecutableFile(path) {
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if (!OS.Path.split(path).absolute) {
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return false;
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}
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try {
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let info = await OS.File.stat(path);
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return !(info.isDir || info.isSymlink);
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} catch (e) {
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return false;
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}
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},
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/**
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* Searches for the given executable file in the system executable
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* file paths as specified by the PATH environment variable.
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*
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* On Windows, if the unadorned filename cannot be found, the
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* extensions in the semicolon-separated list in the PATHEXT
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* environment variable are successively appended to the original
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* name and searched for in turn.
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*
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* @param {string} bin
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* The name of the executable to find.
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* @param {object} environment
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* An object containing a key for each environment variable to be used
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* in the search.
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* @returns {Promise<string>}
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*/
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async pathSearch(bin, environment) {
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let split = OS.Path.split(bin);
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if (split.absolute) {
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if (await this.isExecutableFile(bin)) {
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return bin;
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}
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let error = new Error(`File at path "${bin}" does not exist, or is not a normal file`);
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error.errorCode = SubprocessConstants.ERROR_BAD_EXECUTABLE;
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throw error;
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}
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let dirs = [];
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let exts = [];
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if (environment.PATH) {
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dirs = environment.PATH.split(";");
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}
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if (environment.PATHEXT) {
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exts = environment.PATHEXT.split(";");
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}
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for (let dir of dirs) {
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let path = OS.Path.join(dir, bin);
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if (await this.isExecutableFile(path)) {
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return path;
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}
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for (let ext of exts) {
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let file = path + ext;
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if (await this.isExecutableFile(file)) {
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return file;
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}
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}
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}
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let error = new Error(`Executable not found: ${bin}`);
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error.errorCode = SubprocessConstants.ERROR_BAD_EXECUTABLE;
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throw error;
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},
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};
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var SubprocessImpl = SubprocessWin;
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