F95API/app/scripts/network-helper.js

233 lines
7.5 KiB
JavaScript

"use strict";
// Public modules from npm
const axios = require("axios").default;
const { isString } = require("lodash");
const ky = require("ky-universal").create({
throwHttpErrors: false,
});
const cheerio = require("cheerio");
const axiosCookieJarSupport = require("axios-cookiejar-support").default;
const tough = require("tough-cookie");
// Modules from file
const shared = require("./shared.js");
const f95url = require("./constants/url.js");
const f95selector = require("./constants/css-selector.js");
const LoginResult = require("./classes/login-result.js");
// Global variables
const userAgent = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15) " +
"AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0 Safari/605.1.15";
axiosCookieJarSupport(axios);
const cookieJar = new tough.CookieJar();
const commonConfig = {
headers: {
"User-Agent": userAgent,
"Connection": "keep-alive"
},
withCredentials: true,
jar: cookieJar // Used to store the token in the PC
};
/**
* @protected
* Gets the HTML code of a page.
* @param {String} url URL to fetch
* @returns {Promise<String>} HTML code or `null` if an error arise
*/
module.exports.fetchHTML = async function (url) {
// Fetch the response of the platform
const response = await exports.fetchGETResponse(url);
if (!response) {
shared.logger.warn(`Unable to fetch HTML for ${url}`);
return null;
}
return response.data;
};
/**
* @protected
* It authenticates to the platform using the credentials
* and token obtained previously. Save cookies on your
* device after authentication.
* @param {Credentials} credentials Platform access credentials
* @returns {Promise<LoginResul>} Result of the operation
*/
module.exports.autenticate = async function (credentials) {
shared.logger.info(`Authenticating with user ${credentials.username}`);
if (!credentials.token) throw new Error(`Invalid token for auth: ${credentials.token}`);
// Secure the URL
const secureURL = exports.enforceHttpsUrl(f95url.F95_LOGIN_URL);
// Prepare the parameters to send to the platform to authenticate
const params = new URLSearchParams();
params.append("login", credentials.username);
params.append("url", "");
params.append("password", credentials.password);
params.append("password_confirm", "");
params.append("additional_security", "");
params.append("remember", "1");
params.append("_xfRedirect", "https://f95zone.to/");
params.append("website_code", "");
params.append("_xfToken", credentials.token);
try {
// Try to log-in
const response = await axios.post(secureURL, params, commonConfig);
// Parse the response HTML
const $ = cheerio.load(response.data);
// Get the error message (if any) and remove the new line chars
const errorMessage = $("body").find(f95selector.LOGIN_MESSAGE_ERROR).text().replace(/\n/g, "");
// Return the result of the authentication
if (errorMessage === "") return new LoginResult(true, "Authentication successful");
else return new LoginResult(false, errorMessage);
} catch (e) {
shared.logger.error(`Error ${e.message} occurred while authenticating to ${secureURL}`);
return new LoginResult(false, `Error ${e.message} while authenticating`);
}
};
/**
* Obtain the token used to authenticate the user to the platform.
* @returns {Promise<String>} Token or `null` if an error arise
*/
module.exports.getF95Token = async function() {
// Fetch the response of the platform
const response = await exports.fetchGETResponse(f95url.F95_LOGIN_URL);
if (!response) {
shared.logger.warn("Unable to get the token for the session");
return null;
}
// The response is a HTML page, we need to find the <input> with name "_xfToken"
const $ = cheerio.load(response.data);
const token = $("body").find(f95selector.GET_REQUEST_TOKEN).attr("value");
return token;
};
/**
* @protected
* Gets the basic data used for game data processing
* (such as graphics engines and progress statuses)
* @deprecated
*/
module.exports.fetchPlatformData = async function() {
// Fetch the response of the platform
const response = await exports.fetchGETResponse(f95url.F95_LATEST_UPDATES);
if (!response) {
shared.logger.warn("Unable to get the token for the session");
return;
}
// The response is a HTML page, we need to find
// the base data, used when scraping the games
const $ = cheerio.load(response.data);
// Extract the elements
const engineElements = $("body").find(f95selector.BD_ENGINE_ID_SELECTOR);
const statusesElements = $("body").find(f95selector.BD_STATUS_ID_SELECTOR);
// Extract the raw text
engineElements.each(function extractEngineNames(idx, el) {
const engine = cheerio.load(el).text().trim();
shared.engines.push(engine);
});
statusesElements.each(function extractEngineNames(idx, el) {
const status = cheerio.load(el).text().trim();
shared.statuses.push(status);
});
};
//#region Utility methods
module.exports.fetchGETResponse = async function(url) {
// Secure the URL
const secureURL = exports.enforceHttpsUrl(url);
try {
// Fetch and return the response
return await axios.get(secureURL, commonConfig);
} catch (e) {
shared.logger.error(`Error ${e.message} occurred while trying to fetch ${secureURL}`);
return null;
}
};
/**
* @protected
* Enforces the scheme of the URL is https and returns the new URL.
* @param {String} url
* @returns {String}
*/
module.exports.enforceHttpsUrl = function (url) {
return isString(url) ? url.replace(/^(https?:)?\/\//, "https://") : null;
};
/**
* @protected
* Check if the url belongs to the domain of the F95 platform.
* @param {String} url URL to check
* @returns {Boolean} true if the url belongs to the domain, false otherwise
*/
module.exports.isF95URL = function (url) {
if (url.toString().startsWith(f95url.F95_BASE_URL)) return true;
else return false;
};
/**
* @protected
* Checks if the string passed by parameter has a properly formatted and valid path to a URL.
* @param {String} url String to check for correctness
* @returns {Boolean} true if the string is a valid URL, false otherwise
*/
module.exports.isStringAValidURL = function (url) {
try {
new URL(url); // skipcq: JS-0078
return true;
} catch (err) {
return false;
}
};
/**
* @protected
* Check if a particular URL is valid and reachable on the web.
* @param {String} url URL to check
* @param {Boolean} checkRedirect If true, the function will consider redirects a violation and return false
* @returns {Promise<Boolean>} true if the URL exists, false otherwise
*/
module.exports.urlExists = async function (url, checkRedirect) {
if (!exports.isStringAValidURL(url)) {
return false;
}
const response = await ky.head(url);
let valid = response !== undefined && !/4\d\d/.test(response.status);
if (!valid) return false;
if (checkRedirect) {
const redirectUrl = await exports.getUrlRedirect(url);
if (redirectUrl === url) valid = true;
else valid = false;
}
return valid;
};
/**
* @protected
* Check if the URL has a redirect to another page.
* @param {String} url URL to check for redirect
* @returns {Promise<String>} Redirect URL or the passed URL
*/
module.exports.getUrlRedirect = async function (url) {
const response = await ky.head(url);
return response.url;
};
//#endregion Utility methods