243 lines
8.2 KiB
JavaScript
243 lines
8.2 KiB
JavaScript
"use strict";
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// Public modules from npm
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const axios = require("axios").default;
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const ky = require("ky-universal").create({
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throwHttpErrors: false,
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});
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const cheerio = require("cheerio");
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const axiosCookieJarSupport = require("axios-cookiejar-support").default;
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const tough = require("tough-cookie");
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// Modules from file
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const shared = require("./shared.js");
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const f95url = require("./constants/url.js");
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const f95selector = require("./constants/css-selector.js");
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const LoginResult = require("./classes/login-result.js");
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// Global variables
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const userAgent = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15) " +
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"AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0 Safari/605.1.15";
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axiosCookieJarSupport(axios);
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const cookieJar = new tough.CookieJar();
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const commonConfig = {
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headers: {
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"User-Agent": userAgent,
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"Connection": "keep-alive"
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},
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withCredentials: true,
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jar: cookieJar // Used to store the token in the PC
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};
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/**
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* @protected
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* Gets the HTML code of a page.
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* @param {String} url URL to fetch
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* @returns {Promise<String>} HTML code or `null` if an error arise
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*/
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module.exports.fetchHTML = async function (url) {
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// Fetch the response of the platform
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const response = await exports.fetchGETResponse(url);
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if (!response) {
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shared.logger.warn(`Unable to fetch HTML for ${url}`);
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return null;
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}
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return response.data;
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};
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/**
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* @protected
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* It authenticates to the platform using the credentials
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* and token obtained previously. Save cookies on your
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* device after authentication.
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* @param {Credentials} credentials Platform access credentials
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* @param {Boolea} force Specifies whether the request should be forced, ignoring any saved cookies
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* @returns {Promise<LoginResult>} Result of the operation
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*/
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module.exports.authenticate = async function (credentials, force) {
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shared.logger.info(`Authenticating with user ${credentials.username}`);
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if (!credentials.token) throw new Error(`Invalid token for auth: ${credentials.token}`);
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// Secure the URL
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const secureURL = exports.enforceHttpsUrl(f95url.F95_LOGIN_URL);
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// Prepare the parameters to send to the platform to authenticate
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const params = new URLSearchParams();
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params.append("login", credentials.username);
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params.append("url", "");
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params.append("password", credentials.password);
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params.append("password_confirm", "");
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params.append("additional_security", "");
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params.append("remember", "1");
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params.append("_xfRedirect", "https://f95zone.to/");
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params.append("website_code", "");
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params.append("_xfToken", credentials.token);
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try {
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// Try to log-in
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let config = Object.assign({}, commonConfig);
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if (force) delete config.jar;
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const response = await axios.post(secureURL, params, config);
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// Parse the response HTML
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const $ = cheerio.load(response.data);
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// Get the error message (if any) and remove the new line chars
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const errorMessage = $("body").find(f95selector.LOGIN_MESSAGE_ERROR).text().replace(/\n/g, "");
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// Return the result of the authentication
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if (errorMessage === "") return new LoginResult(true, "Authentication successful");
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else return new LoginResult(false, errorMessage);
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} catch (e) {
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shared.logger.error(`Error ${e.message} occurred while authenticating to ${secureURL}`);
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return new LoginResult(false, `Error ${e.message} while authenticating`);
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}
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};
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/**
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* Obtain the token used to authenticate the user to the platform.
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* @returns {Promise<String>} Token or `null` if an error arise
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*/
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module.exports.getF95Token = async function() {
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// Fetch the response of the platform
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const response = await exports.fetchGETResponse(f95url.F95_LOGIN_URL);
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if (!response) {
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shared.logger.warn("Unable to get the token for the session");
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return null;
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}
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// The response is a HTML page, we need to find the <input> with name "_xfToken"
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const $ = cheerio.load(response.data);
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const token = $("body").find(f95selector.GET_REQUEST_TOKEN).attr("value");
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return token;
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};
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/**
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* @protected
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* Gets the basic data used for game data processing
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* (such as graphics engines and progress statuses)
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* @deprecated
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*/
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/* istanbul ignore next */
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module.exports.fetchPlatformData = async function() {
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// Fetch the response of the platform
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const response = await exports.fetchGETResponse(f95url.F95_LATEST_UPDATES);
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if (!response) {
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shared.logger.warn("Unable to get the token for the session");
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return;
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}
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// The response is a HTML page, we need to find
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// the base data, used when scraping the games
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const $ = cheerio.load(response.data);
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// Extract the elements
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const engineElements = $("body").find(f95selector.BD_ENGINE_ID_SELECTOR);
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const statusesElements = $("body").find(f95selector.BD_STATUS_ID_SELECTOR);
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// Extract the raw text
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engineElements.each(function extractEngineNames(idx, el) {
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const engine = cheerio.load(el).text().trim();
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shared.engines.push(engine);
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});
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statusesElements.each(function extractEngineNames(idx, el) {
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const status = cheerio.load(el).text().trim();
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shared.statuses.push(status);
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});
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};
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//#region Utility methods
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/**
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* @protected
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* Performs a GET request to a specific URL and returns the response.
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* If the request generates an error (for example 400) `null` is returned.
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* @param {String} url
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*/
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module.exports.fetchGETResponse = async function(url) {
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// Secure the URL
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const secureURL = exports.enforceHttpsUrl(url);
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try {
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// Fetch and return the response
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return await axios.get(secureURL, commonConfig);
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} catch (e) {
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shared.logger.error(`Error ${e.message} occurred while trying to fetch ${secureURL}`);
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return null;
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}
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};
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/**
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* @protected
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* Enforces the scheme of the URL is https and returns the new URL.
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* @param {String} url
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* @returns {String} Secure URL or `null` if the argument is not a string
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*/
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module.exports.enforceHttpsUrl = function (url) {
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return exports.isStringAValidURL(url) ? url.replace(/^(https?:)?\/\//, "https://") : null;
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};
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/**
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* @protected
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* Check if the url belongs to the domain of the F95 platform.
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* @param {String} url URL to check
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* @returns {Boolean} true if the url belongs to the domain, false otherwise
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*/
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module.exports.isF95URL = function (url) {
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if (url.toString().startsWith(f95url.F95_BASE_URL)) return true;
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else return false;
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};
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/**
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* @protected
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* Checks if the string passed by parameter has a
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* properly formatted and valid path to a URL (HTTP/HTTPS).
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* @param {String} url String to check for correctness
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* @returns {Boolean} true if the string is a valid URL, false otherwise
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*/
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module.exports.isStringAValidURL = function (url) {
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// Many thanks to Daveo at StackOverflow (https://preview.tinyurl.com/y2f2e2pc)
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const expression = /https?:\/\/(www\.)?[-a-zA-Z0-9@:%._+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_+.~#?&//=]*)/;
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const regex = new RegExp(expression);
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if (url.match(regex)) return true;
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else return false;
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};
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/**
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* @protected
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* Check if a particular URL is valid and reachable on the web.
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* @param {String} url URL to check
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* @param {Boolean} checkRedirect If true, the function will consider redirects a violation and return false
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* @returns {Promise<Boolean>} true if the URL exists, false otherwise
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*/
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module.exports.urlExists = async function (url, checkRedirect) {
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if (!exports.isStringAValidURL(url)) {
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return false;
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}
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const response = await ky.head(url);
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let valid = response !== undefined && !/4\d\d/.test(response.status);
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if (!valid) return false;
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if (checkRedirect) {
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const redirectUrl = await exports.getUrlRedirect(url);
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if (redirectUrl === url) valid = true;
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else valid = false;
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}
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return valid;
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};
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/**
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* @protected
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* Check if the URL has a redirect to another page.
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* @param {String} url URL to check for redirect
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* @returns {Promise<String>} Redirect URL or the passed URL
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*/
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module.exports.getUrlRedirect = async function (url) {
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const response = await ky.head(url);
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return response.url;
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};
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//#endregion Utility methods
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