465 lines
11 KiB
JavaScript
465 lines
11 KiB
JavaScript
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/* global host, data, VMError */
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'use strict';
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const LocalError = Error;
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const LocalTypeError = TypeError;
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const LocalWeakMap = WeakMap;
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const {
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apply: localReflectApply,
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defineProperty: localReflectDefineProperty
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} = Reflect;
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const {
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set: localWeakMapSet,
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get: localWeakMapGet
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} = LocalWeakMap.prototype;
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const {
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isArray: localArrayIsArray
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} = Array;
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function uncurryThis(func) {
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return (thiz, ...args) => localReflectApply(func, thiz, args);
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}
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const localArrayPrototypeSlice = uncurryThis(Array.prototype.slice);
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const localArrayPrototypeIncludes = uncurryThis(Array.prototype.includes);
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const localArrayPrototypePush = uncurryThis(Array.prototype.push);
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const localArrayPrototypeIndexOf = uncurryThis(Array.prototype.indexOf);
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const localArrayPrototypeSplice = uncurryThis(Array.prototype.splice);
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const localStringPrototypeStartsWith = uncurryThis(String.prototype.startsWith);
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const localStringPrototypeSlice = uncurryThis(String.prototype.slice);
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const localStringPrototypeIndexOf = uncurryThis(String.prototype.indexOf);
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const {
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argv: optionArgv,
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env: optionEnv,
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console: optionConsole,
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vm,
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resolver,
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extensions
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} = data;
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function ensureSandboxArray(a) {
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return localArrayPrototypeSlice(a);
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}
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const globalPaths = ensureSandboxArray(resolver.globalPaths);
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class Module {
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constructor(id, path, parent) {
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this.id = id;
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this.filename = id;
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this.path = path;
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this.parent = parent;
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this.loaded = false;
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this.paths = path ? ensureSandboxArray(resolver.genLookupPaths(path)) : [];
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this.children = [];
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this.exports = {};
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}
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_updateChildren(child, isNew) {
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const children = this.children;
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if (children && (isNew || !localArrayPrototypeIncludes(children, child))) {
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localArrayPrototypePush(children, child);
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}
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}
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require(id) {
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return requireImpl(this, id, false);
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}
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}
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const originalRequire = Module.prototype.require;
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const cacheBuiltins = {__proto__: null};
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function requireImpl(mod, id, direct) {
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if (direct && mod.require !== originalRequire) {
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return mod.require(id);
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}
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const filename = resolver.resolve(mod, id, undefined, Module._extensions, direct);
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if (localStringPrototypeStartsWith(filename, 'node:')) {
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id = localStringPrototypeSlice(filename, 5);
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let nmod = cacheBuiltins[id];
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if (!nmod) {
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nmod = resolver.loadBuiltinModule(vm, id);
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if (!nmod) throw new VMError(`Cannot find module '${filename}'`, 'ENOTFOUND');
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cacheBuiltins[id] = nmod;
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}
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return nmod;
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}
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const cachedModule = Module._cache[filename];
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if (cachedModule !== undefined) {
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mod._updateChildren(cachedModule, false);
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return cachedModule.exports;
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}
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let nmod = cacheBuiltins[id];
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if (nmod) return nmod;
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nmod = resolver.loadBuiltinModule(vm, id);
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if (nmod) {
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cacheBuiltins[id] = nmod;
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return nmod;
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}
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const path = resolver.pathDirname(filename);
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const module = new Module(filename, path, mod);
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resolver.registerModule(module, filename, path, mod, direct);
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mod._updateChildren(module, true);
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try {
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Module._cache[filename] = module;
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const handler = findBestExtensionHandler(filename);
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handler(module, filename);
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module.loaded = true;
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} catch (e) {
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delete Module._cache[filename];
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const children = mod.children;
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if (localArrayIsArray(children)) {
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const index = localArrayPrototypeIndexOf(children, module);
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if (index !== -1) {
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localArrayPrototypeSplice(children, index, 1);
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}
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}
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throw e;
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}
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return module.exports;
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}
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Module.builtinModules = ensureSandboxArray(resolver.getBuiltinModulesList());
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Module.globalPaths = globalPaths;
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Module._extensions = {__proto__: null};
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Module._cache = {__proto__: null};
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{
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const keys = Object.getOwnPropertyNames(extensions);
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for (let i = 0; i < keys.length; i++) {
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const key = keys[i];
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const handler = extensions[key];
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Module._extensions[key] = (mod, filename) => handler(mod, filename);
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}
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}
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function findBestExtensionHandler(filename) {
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const name = resolver.pathBasename(filename);
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for (let i = 0; (i = localStringPrototypeIndexOf(name, '.', i + 1)) !== -1;) {
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const ext = localStringPrototypeSlice(name, i);
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const handler = Module._extensions[ext];
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if (handler) return handler;
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}
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const js = Module._extensions['.js'];
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if (js) return js;
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const keys = Object.getOwnPropertyNames(Module._extensions);
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if (keys.length === 0) throw new VMError(`Failed to load '${filename}': Unknown type.`, 'ELOADFAIL');
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return Module._extensions[keys[0]];
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}
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function createRequireForModule(mod) {
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// eslint-disable-next-line no-shadow
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function require(id) {
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return requireImpl(mod, id, true);
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}
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function resolve(id, options) {
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return resolver.resolve(mod, id, options, Module._extensions, true);
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}
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require.resolve = resolve;
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function paths(id) {
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return ensureSandboxArray(resolver.lookupPaths(mod, id));
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}
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resolve.paths = paths;
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require.extensions = Module._extensions;
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require.cache = Module._cache;
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return require;
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}
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/**
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* Prepare sandbox.
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*/
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const TIMERS = new LocalWeakMap();
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class Timeout {
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}
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class Interval {
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}
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class Immediate {
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}
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function clearTimer(timer) {
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const obj = localReflectApply(localWeakMapGet, TIMERS, [timer]);
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if (obj) {
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obj.clear(obj.value);
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}
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}
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// This is a function and not an arrow function, since the original is also a function
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// eslint-disable-next-line no-shadow
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global.setTimeout = function setTimeout(callback, delay, ...args) {
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if (typeof callback !== 'function') throw new LocalTypeError('"callback" argument must be a function');
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const obj = new Timeout(callback, args);
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const cb = () => {
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localReflectApply(callback, null, args);
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};
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const tmr = host.setTimeout(cb, delay);
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const ref = {
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__proto__: null,
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clear: host.clearTimeout,
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value: tmr
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};
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localReflectApply(localWeakMapSet, TIMERS, [obj, ref]);
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return obj;
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};
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// eslint-disable-next-line no-shadow
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global.setInterval = function setInterval(callback, interval, ...args) {
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if (typeof callback !== 'function') throw new LocalTypeError('"callback" argument must be a function');
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const obj = new Interval();
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const cb = () => {
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localReflectApply(callback, null, args);
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};
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const tmr = host.setInterval(cb, interval);
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const ref = {
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__proto__: null,
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clear: host.clearInterval,
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value: tmr
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};
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localReflectApply(localWeakMapSet, TIMERS, [obj, ref]);
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return obj;
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};
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// eslint-disable-next-line no-shadow
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global.setImmediate = function setImmediate(callback, ...args) {
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if (typeof callback !== 'function') throw new LocalTypeError('"callback" argument must be a function');
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const obj = new Immediate();
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const cb = () => {
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localReflectApply(callback, null, args);
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};
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const tmr = host.setImmediate(cb);
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const ref = {
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__proto__: null,
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clear: host.clearImmediate,
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value: tmr
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};
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localReflectApply(localWeakMapSet, TIMERS, [obj, ref]);
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return obj;
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};
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// eslint-disable-next-line no-shadow
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global.clearTimeout = function clearTimeout(timeout) {
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clearTimer(timeout);
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};
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// eslint-disable-next-line no-shadow
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global.clearInterval = function clearInterval(interval) {
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clearTimer(interval);
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};
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// eslint-disable-next-line no-shadow
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global.clearImmediate = function clearImmediate(immediate) {
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clearTimer(immediate);
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};
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const localProcess = host.process;
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function vmEmitArgs(event, args) {
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const allargs = [event];
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for (let i = 0; i < args.length; i++) {
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if (!localReflectDefineProperty(allargs, i + 1, {
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__proto__: null,
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value: args[i],
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writable: true,
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enumerable: true,
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configurable: true
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})) throw new LocalError('Unexpected');
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}
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return localReflectApply(vm.emit, vm, allargs);
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}
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const LISTENERS = new LocalWeakMap();
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const LISTENER_HANDLER = new LocalWeakMap();
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/**
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*
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* @param {*} name
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* @param {*} handler
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* @this process
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* @return {this}
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*/
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function addListener(name, handler) {
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if (name !== 'beforeExit' && name !== 'exit') {
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throw new LocalError(`Access denied to listen for '${name}' event.`);
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}
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let cb = localReflectApply(localWeakMapGet, LISTENERS, [handler]);
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if (!cb) {
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cb = () => {
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handler();
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};
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localReflectApply(localWeakMapSet, LISTENER_HANDLER, [cb, handler]);
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localReflectApply(localWeakMapSet, LISTENERS, [handler, cb]);
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}
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localProcess.on(name, cb);
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return this;
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}
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/**
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*
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* @this process
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* @return {this}
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*/
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// eslint-disable-next-line no-shadow
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function process() {
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return this;
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}
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// FIXME wrong class structure
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global.process = {
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__proto__: process.prototype,
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argv: optionArgv !== undefined ? optionArgv : [],
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title: localProcess.title,
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version: localProcess.version,
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versions: localProcess.versions,
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arch: localProcess.arch,
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platform: localProcess.platform,
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env: optionEnv !== undefined ? optionEnv : {},
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pid: localProcess.pid,
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features: localProcess.features,
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nextTick: function nextTick(callback, ...args) {
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if (typeof callback !== 'function') {
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throw new LocalError('Callback must be a function.');
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}
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localProcess.nextTick(()=>{
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localReflectApply(callback, null, args);
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});
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},
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hrtime: function hrtime(time) {
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return localProcess.hrtime(time);
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},
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cwd: function cwd() {
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return localProcess.cwd();
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},
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addListener,
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on: addListener,
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once: function once(name, handler) {
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if (name !== 'beforeExit' && name !== 'exit') {
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throw new LocalError(`Access denied to listen for '${name}' event.`);
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}
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let triggered = false;
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const cb = () => {
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if (triggered) return;
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triggered = true;
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localProcess.removeListener(name, cb);
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handler();
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};
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localReflectApply(localWeakMapSet, LISTENER_HANDLER, [cb, handler]);
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localProcess.on(name, cb);
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return this;
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},
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listeners: function listeners(name) {
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if (name !== 'beforeExit' && name !== 'exit') {
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// Maybe add ({__proto__:null})[name] to throw when name fails in https://tc39.es/ecma262/#sec-topropertykey.
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return [];
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}
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// Filter out listeners, which were not created in this sandbox
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const all = localProcess.listeners(name);
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const filtered = [];
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let j = 0;
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for (let i = 0; i < all.length; i++) {
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const h = localReflectApply(localWeakMapGet, LISTENER_HANDLER, [all[i]]);
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if (h) {
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if (!localReflectDefineProperty(filtered, j, {
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__proto__: null,
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value: h,
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writable: true,
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enumerable: true,
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|
|
configurable: true
|
||
|
|
})) throw new LocalError('Unexpected');
|
||
|
|
j++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return filtered;
|
||
|
|
},
|
||
|
|
|
||
|
|
removeListener: function removeListener(name, handler) {
|
||
|
|
if (name !== 'beforeExit' && name !== 'exit') {
|
||
|
|
return this;
|
||
|
|
}
|
||
|
|
|
||
|
|
const cb = localReflectApply(localWeakMapGet, LISTENERS, [handler]);
|
||
|
|
if (cb) localProcess.removeListener(name, cb);
|
||
|
|
|
||
|
|
return this;
|
||
|
|
},
|
||
|
|
|
||
|
|
umask: function umask() {
|
||
|
|
if (arguments.length) {
|
||
|
|
throw new LocalError('Access denied to set umask.');
|
||
|
|
}
|
||
|
|
|
||
|
|
return localProcess.umask();
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
if (optionConsole === 'inherit') {
|
||
|
|
global.console = host.console;
|
||
|
|
} else if (optionConsole === 'redirect') {
|
||
|
|
global.console = {
|
||
|
|
debug(...args) {
|
||
|
|
vmEmitArgs('console.debug', args);
|
||
|
|
},
|
||
|
|
log(...args) {
|
||
|
|
vmEmitArgs('console.log', args);
|
||
|
|
},
|
||
|
|
info(...args) {
|
||
|
|
vmEmitArgs('console.info', args);
|
||
|
|
},
|
||
|
|
warn(...args) {
|
||
|
|
vmEmitArgs('console.warn', args);
|
||
|
|
},
|
||
|
|
error(...args) {
|
||
|
|
vmEmitArgs('console.error', args);
|
||
|
|
},
|
||
|
|
dir(...args) {
|
||
|
|
vmEmitArgs('console.dir', args);
|
||
|
|
},
|
||
|
|
time() {},
|
||
|
|
timeEnd() {},
|
||
|
|
trace(...args) {
|
||
|
|
vmEmitArgs('console.trace', args);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
return {
|
||
|
|
__proto__: null,
|
||
|
|
Module,
|
||
|
|
jsonParse: JSON.parse,
|
||
|
|
createRequireForModule,
|
||
|
|
requireImpl
|
||
|
|
};
|