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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/. */
import { AppConstants } from "resource://gre/modules/AppConstants.sys.mjs";
import {
BaseProcess,
PromiseWorker,
} from "resource://gre/modules/subprocess/subprocess_common.sys.mjs";
const { ctypes } = ChromeUtils.import("resource://gre/modules/ctypes.jsm");
var obj = { ctypes };
Services.scriptloader.loadSubScript(
"resource://gre/modules/subprocess/subprocess_shared.js",
obj
);
Services.scriptloader.loadSubScript(
"resource://gre/modules/subprocess/subprocess_shared_win.js",
obj
);
const { SubprocessConstants } = obj;
// libc and win32 are exported for tests.
export const libc = obj.libc;
export const win32 = obj.win32;
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: Services.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);
}
},
async isExecutableFile(path) {
if (!PathUtils.isAbsolute(path)) {
return false;
}
try {
let info = await IOUtils.stat(path);
// On Windows, a FileType of "other" indicates it is a reparse point
// (i.e., a link).
return info.type !== "directory" && info.type !== "other";
} 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>}
*/
async pathSearch(bin, environment) {
if (PathUtils.isAbsolute(bin)) {
if (await 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 = PathUtils.join(dir, bin);
if (await this.isExecutableFile(path)) {
return path;
}
for (let ext of exts) {
let file = path + ext;
if (await this.isExecutableFile(file)) {
return file;
}
}
}
let error = new Error(`Executable not found: ${bin}`);
error.errorCode = SubprocessConstants.ERROR_BAD_EXECUTABLE;
throw error;
},
};
export var SubprocessImpl = SubprocessWin;
|
