352 lines
11 KiB
JavaScript
352 lines
11 KiB
JavaScript
"use strict";
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const path = require("path");
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const fs = require("pn/fs");
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const vm = require("vm");
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const toughCookie = require("tough-cookie");
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const request = require("request-promise-native");
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const sniffHTMLEncoding = require("html-encoding-sniffer");
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const whatwgURL = require("whatwg-url");
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const whatwgEncoding = require("whatwg-encoding");
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const { URL } = require("whatwg-url");
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const MIMEType = require("whatwg-mimetype");
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const idlUtils = require("./jsdom/living/generated/utils.js");
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const VirtualConsole = require("./jsdom/virtual-console.js");
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const Window = require("./jsdom/browser/Window.js");
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const { domToHtml } = require("./jsdom/browser/domtohtml.js");
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const { applyDocumentFeatures } = require("./jsdom/browser/documentfeatures.js");
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const { wrapCookieJarForRequest } = require("./jsdom/browser/resource-loader.js");
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const { version: packageVersion } = require("../package.json");
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const DEFAULT_USER_AGENT = `Mozilla/5.0 (${process.platform}) AppleWebKit/537.36 (KHTML, like Gecko) ` +
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`jsdom/${packageVersion}`;
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// This symbol allows us to smuggle a non-public option through to the JSDOM constructor, for use by JSDOM.fromURL.
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const transportLayerEncodingLabelHiddenOption = Symbol("transportLayerEncodingLabel");
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class CookieJar extends toughCookie.CookieJar {
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constructor(store, options) {
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// jsdom cookie jars must be loose by default
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super(store, Object.assign({ looseMode: true }, options));
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}
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}
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const window = Symbol("window");
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let sharedFragmentDocument = null;
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class JSDOM {
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constructor(input, options = {}) {
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const { html, encoding } = normalizeHTML(input, options[transportLayerEncodingLabelHiddenOption]);
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options = transformOptions(options, encoding);
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this[window] = new Window(options.windowOptions);
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// TODO NEWAPI: the whole "features" infrastructure is horrible and should be re-built. When we switch to newapi
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// wholesale, or perhaps before, we should re-do it. For now, just adapt the new, nice, public API into the old,
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// ugly, internal API.
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const features = {
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FetchExternalResources: [],
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SkipExternalResources: false
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};
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if (options.resources === "usable") {
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features.FetchExternalResources = ["link", "img", "frame", "iframe"];
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if (options.windowOptions.runScripts === "dangerously") {
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features.FetchExternalResources.push("script");
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}
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// Note that "img" will be ignored by the code in HTMLImageElement-impl.js if canvas is not installed.
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// TODO NEWAPI: clean that up and centralize the logic here.
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}
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const documentImpl = idlUtils.implForWrapper(this[window]._document);
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applyDocumentFeatures(documentImpl, features);
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options.beforeParse(this[window]._globalProxy);
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// TODO NEWAPI: this is still pretty hacky. It's also different than jsdom.jsdom. Does it work? Can it be better?
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documentImpl._htmlToDom.appendToDocument(html, documentImpl);
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documentImpl.close();
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}
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get window() {
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// It's important to grab the global proxy, instead of just the result of `new Window(...)`, since otherwise things
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// like `window.eval` don't exist.
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return this[window]._globalProxy;
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}
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get virtualConsole() {
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return this[window]._virtualConsole;
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}
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get cookieJar() {
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// TODO NEWAPI move _cookieJar to window probably
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return idlUtils.implForWrapper(this[window]._document)._cookieJar;
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}
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serialize() {
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return domToHtml([idlUtils.implForWrapper(this[window]._document)]);
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}
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nodeLocation(node) {
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if (!idlUtils.implForWrapper(this[window]._document)._parseOptions.locationInfo) {
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throw new Error("Location information was not saved for this jsdom. Use includeNodeLocations during creation.");
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}
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return idlUtils.implForWrapper(node).__location;
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}
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runVMScript(script) {
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if (!vm.isContext(this[window])) {
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throw new TypeError("This jsdom was not configured to allow script running. " +
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"Use the runScripts option during creation.");
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}
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return script.runInContext(this[window]);
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}
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reconfigure(settings) {
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if ("windowTop" in settings) {
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this[window]._top = settings.windowTop;
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}
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if ("url" in settings) {
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const document = idlUtils.implForWrapper(this[window]._document);
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const url = whatwgURL.parseURL(settings.url);
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if (url === null) {
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throw new TypeError(`Could not parse "${settings.url}" as a URL`);
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}
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document._URL = url;
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document.origin = whatwgURL.serializeURLOrigin(document._URL);
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}
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}
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static fragment(string) {
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if (!sharedFragmentDocument) {
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sharedFragmentDocument = (new JSDOM()).window.document;
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}
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const template = sharedFragmentDocument.createElement("template");
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template.innerHTML = string;
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return template.content;
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}
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static fromURL(url, options = {}) {
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return Promise.resolve().then(() => {
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const parsedURL = new URL(url);
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url = parsedURL.href;
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options = normalizeFromURLOptions(options);
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const requestOptions = {
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resolveWithFullResponse: true,
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encoding: null, // i.e., give me the raw Buffer
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gzip: true,
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headers: {
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"User-Agent": options.userAgent,
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Referer: options.referrer,
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Accept: "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
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"Accept-Language": "en"
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},
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jar: wrapCookieJarForRequest(options.cookieJar)
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};
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return request(url, requestOptions).then(res => {
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let transportLayerEncodingLabel;
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if ("content-type" in res.headers) {
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const mimeType = new MIMEType(res.headers["content-type"]);
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transportLayerEncodingLabel = mimeType.parameters.get("charset");
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}
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options = Object.assign(options, {
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url: res.request.href + parsedURL.hash,
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contentType: res.headers["content-type"],
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referrer: res.request.getHeader("referer"),
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[transportLayerEncodingLabelHiddenOption]: transportLayerEncodingLabel
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});
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return new JSDOM(res.body, options);
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});
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});
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}
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static fromFile(filename, options = {}) {
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return Promise.resolve().then(() => {
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options = normalizeFromFileOptions(filename, options);
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return fs.readFile(filename).then(buffer => {
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return new JSDOM(buffer, options);
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});
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});
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}
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}
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function normalizeFromURLOptions(options) {
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// Checks on options that are invalid for `fromURL`
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if (options.url !== undefined) {
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throw new TypeError("Cannot supply a url option when using fromURL");
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}
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if (options.contentType !== undefined) {
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throw new TypeError("Cannot supply a contentType option when using fromURL");
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}
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// Normalization of options which must be done before the rest of the fromURL code can use them, because they are
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// given to request()
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const normalized = Object.assign({}, options);
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if (options.userAgent === undefined) {
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normalized.userAgent = DEFAULT_USER_AGENT;
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}
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if (options.referrer !== undefined) {
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normalized.referrer = (new URL(options.referrer)).href;
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}
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if (options.cookieJar === undefined) {
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normalized.cookieJar = new CookieJar();
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}
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return normalized;
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// All other options don't need to be processed yet, and can be taken care of in the normal course of things when
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// `fromURL` calls `new JSDOM(html, options)`.
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}
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function normalizeFromFileOptions(filename, options) {
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const normalized = Object.assign({}, options);
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if (normalized.contentType === undefined) {
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const extname = path.extname(filename);
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if (extname === ".xhtml" || extname === ".xml") {
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normalized.contentType = "application/xhtml+xml";
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}
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}
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if (normalized.url === undefined) {
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normalized.url = new URL("file:" + path.resolve(filename));
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}
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return normalized;
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}
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function transformOptions(options, encoding) {
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const transformed = {
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windowOptions: {
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// Defaults
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url: "about:blank",
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referrer: "",
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contentType: "text/html",
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parsingMode: "html",
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userAgent: DEFAULT_USER_AGENT,
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parseOptions: { locationInfo: false },
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runScripts: undefined,
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encoding,
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pretendToBeVisual: false,
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storageQuota: 5000000,
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// Defaults filled in later
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virtualConsole: undefined,
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cookieJar: undefined
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},
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// Defaults
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resources: undefined,
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beforeParse() { }
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};
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if (options.contentType !== undefined) {
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const mimeType = new MIMEType(options.contentType);
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if (!mimeType.isHTML() && !mimeType.isXML()) {
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throw new RangeError(`The given content type of "${options.contentType}" was not a HTML or XML content type`);
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}
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transformed.windowOptions.contentType = mimeType.essence;
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transformed.windowOptions.parsingMode = mimeType.isHTML() ? "html" : "xml";
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}
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if (options.url !== undefined) {
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transformed.windowOptions.url = (new URL(options.url)).href;
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}
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if (options.referrer !== undefined) {
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transformed.windowOptions.referrer = (new URL(options.referrer)).href;
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}
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if (options.userAgent !== undefined) {
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transformed.windowOptions.userAgent = String(options.userAgent);
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}
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if (options.includeNodeLocations) {
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if (transformed.windowOptions.parsingMode === "xml") {
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throw new TypeError("Cannot set includeNodeLocations to true with an XML content type");
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}
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transformed.windowOptions.parseOptions = { locationInfo: true };
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}
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transformed.windowOptions.cookieJar = options.cookieJar === undefined ?
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new CookieJar() :
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options.cookieJar;
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transformed.windowOptions.virtualConsole = options.virtualConsole === undefined ?
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(new VirtualConsole()).sendTo(console) :
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options.virtualConsole;
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if (options.resources !== undefined) {
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transformed.resources = String(options.resources);
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if (transformed.resources !== "usable") {
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throw new RangeError(`resources must be undefined or "usable"`);
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}
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}
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if (options.runScripts !== undefined) {
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transformed.windowOptions.runScripts = String(options.runScripts);
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if (transformed.windowOptions.runScripts !== "dangerously" &&
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transformed.windowOptions.runScripts !== "outside-only") {
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throw new RangeError(`runScripts must be undefined, "dangerously", or "outside-only"`);
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}
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}
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if (options.beforeParse !== undefined) {
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transformed.beforeParse = options.beforeParse;
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}
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if (options.pretendToBeVisual !== undefined) {
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transformed.windowOptions.pretendToBeVisual = Boolean(options.pretendToBeVisual);
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}
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if (options.storageQuota !== undefined) {
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transformed.windowOptions.storageQuota = Number(options.storageQuota);
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}
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// concurrentNodeIterators??
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return transformed;
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}
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function normalizeHTML(html = "", transportLayerEncodingLabel) {
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let encoding = "UTF-8";
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if (ArrayBuffer.isView(html)) {
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html = Buffer.from(html.buffer, html.byteOffset, html.byteLength);
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} else if (html instanceof ArrayBuffer) {
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html = Buffer.from(html);
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}
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if (Buffer.isBuffer(html)) {
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encoding = sniffHTMLEncoding(html, { defaultEncoding: "windows-1252", transportLayerEncodingLabel });
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html = whatwgEncoding.decode(html, encoding);
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} else {
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html = String(html);
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}
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return { html, encoding };
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}
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exports.JSDOM = JSDOM;
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exports.VirtualConsole = VirtualConsole;
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exports.CookieJar = CookieJar;
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exports.toughCookie = toughCookie;
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