Implement SSO using cookie and .config file.

.config

@@ -0,0 +1,4 @@
+{
+  "cookie":"corp_sessionid=hashvalue; BrowserCookie=hashvalue; original_referer=direct; _ga=GA1.2.1043727385.1529170946; _gid=GA1.2.88305855.1529170946; timezoneoffset=21600; _vwo_uuid_v2=hashvalue; kampyle_userid=hashvalue; cd_user_id=hashvalue; sessionid=hashvalue; csrfsafari=hashvalue; salesforce_id=hashvalue; logged_in=y; kampyleUserSession=hashvalue; kampyleUserSessionsCount=3; kampyleUserPercentile=value; recently-viewed=%value; kampyleSessionPageCounter=18; _gali=sbo-rt-content; _gat=1",
+  "bookid":9781491925607
+}

lib/cli/index.js

@@ -2,60 +2,33 @@
 // sets up the Command Line Interface
 'use strict';
 
-const program = require('commander');
 const logger = require('../logger');
 const Safari = require('../safari');
 const EbookWriter = require('../ebook-writer');
 const debug = require('debug')('cli');
 const fs = require('fs-promise');
 
-// ## Commander Initialization
-// specifying CLI options and version
-program
-  .version("1.0.0")
-  .option('-b, --bookid <bookid>','the book id of the SafariBooksOnline ePub to be generated')
-  .option('-u, --username <username>','username of the SafariBooksOnline user - must have a **paid/trial membership**, otherwise will not be able to access the books')
-  .option('-p, --password <password>','password of the SafariBooksOnline user')
-  .option('-o, --output <output>','output path the epub file should be saved to')
-  .parse(process.argv);
 
-var username, password;
-
-// ## see whether .credentials already exists
-  if (fs.existsSync(__dirname + '/.credentials')) {
-    var credentials = JSON.parse(fs.readFileSync(__dirname + '/.credentials', 'utf-8'));
-    username = credentials.username;
-    password = credentials.password;
-    debug("there is an existing user cached with username: " + username);
+// ## see whether .cookie already exists
+if (!fs.existsSync(__dirname + '/../../.config')) {
+  logger.log("Please create the configuration file");
+  return;
+} else {
+  var config = JSON.parse(fs.readFileSync(__dirname + '/../../.config', 'utf-8'));
 }
 
-// ## overwrite username and password if specified
-if(program.username) username = program.username;
-if(program.password) password = program.password;
-
-// ## Validate Input
-if(!program.bookid) return console.log("error: option '-b' missing. please consider '--help' for more information.");
-if(!username) return console.log("error: option '-u' missing. please consider '--help' for more information.");
-if(!password) return console.log("error: option '-p' missing. please consider '--help' for more information.");
-if(!program.output) return console.log("error: option '-o' missing. please consider '--help' for more information.");
-
-// ## Starting CLI
-logger.log(`starting application...`);
+const { bookid, cookie } = config;
 
-// ## writing credentials to file
-let json = JSON.stringify({ "username": username, "password": password });
-fs.writeFile(__dirname + '/.credentials', json).then( () => {
-  debug(`the username and password were successfully cached`);
-}).catch( (err) => {
-  debug(`an error occurred trying to write the username and pass to the cache file`);
-});
+logger.log(`cookie ${cookie}`);
+logger.log(`bookid ${bookid}`);
 
 // ## Authorize User
-var safariClient = new Safari();
-safariClient.fetchBookById(program.bookid, username, password).then( (bookJSON) => {
+var safariClient = new Safari(cookie);
+safariClient.fetchBookById(bookid).then( (bookJSON) => {
   // console.log(bookJSON);
   var ebook = new EbookWriter(bookJSON);
-  return ebook.save(program.output);
+  logger.log(__dirname + '/../../books/' + bookJSON.title + '.epub');
+  return ebook.save(__dirname + '/../../books/' + bookJSON.title + '.epub');
 }).then( () => {
   // ## finished saving
   debug("the epub was successfully saved");

lib/safari/index.js

@@ -13,13 +13,13 @@ const debug = require('debug')('safari'),
 *
 * @return {Object} safari - returns a safari object
 */
-const Safari = function Safari() {
-
+const Safari = function Safari(cookie) {
   // ## prepare base settings
   this.baseUrl = "https://www.safaribooksonline.com";
   this.clientSecret = "f52b3e30b68c1820adb08609c799cb6da1c29975";
   this.clientId = "446a8a270214734f42a7";
   this.books = {};
+  this.cookie = cookie;
 }
 
 /**
@@ -56,52 +56,6 @@ Safari.prototype.fetchStylesheet = function fetchStylesheet(id) {
   Promise.resolve(stylesheetUrl);
 }
 
-/**
-* ## Authorize User
-* authorizes an user with the given credentials and sets the authorization key
-*
-* @param {String} username - the username of the safaribooksonline account
-* @param {String} password - the password of the safaribooksonline account
-*
-* @return {String} accessToken - returns the access token
-*/
-Safari.prototype.authorizeUser = function authorizeUser(username, password) {
-  debug(`authorizeUser called with user ${username} and password ${password}`);
-  if (!username || !password) return Promise.reject("username or password was not specified");
-  // ## prepare options for oauth request
-  let options = {
-    method: 'POST',
-    uri: `${this.baseUrl}/oauth2/access_token/`,
-    form: {
-      "client_id" : this.clientId,
-      "client_secret" : this.clientSecret,
-      "grant_type" : "password",
-      "username" : username,
-      "password" : password
-    },
-    json: true
-  };
-  // ## make API call in order to retrieve Bearer Authorization Token
-  return request(options)
-     .then( (body) => {
-         // ### the token was successfully generated
-         let accessToken = body["access_token"];
-         if (!accessToken) {
-           debug('the access_token is not present in the server response, even though it returned an 200 OK');
-           return Promise.reject("The access_token is not present in the server response. Please contact the developer to fix this problem.")
-         }
-         this.accessToken = accessToken;
-         debug(`the access_token is: ${accessToken}`);
-         return Promise.resolve(accessToken);
-     })
-     .catch( (err) => {
-         // ### an error occured
-         debug(`an error occured while trying to fetch authorization token (error: ${err})`);
-         return Promise.reject(err);
-     });
-}
-
-
 /**
 * ## Fetch Resource
 * fetches a resource with the given url and automatically adds the required authorization token
@@ -113,12 +67,12 @@ Safari.prototype.authorizeUser = function authorizeUser(username, password) {
 */
 Safari.prototype.fetchResource = function fetchResource(url, options) {
   debug(`fetchResource called with URL: ${url}`);
-  if(!url || !this.accessToken) return Promise.reject("url was not specified or user has not been authorized yet");
+  if(!url) return Promise.reject("url was not specified or user has not been authorized yet");
   // ## prepare options for resource request
   var uri = `${this.baseUrl}/${url}`;
   var json = true;
   var headers = {
-    "authorization": `Bearer ${this.accessToken}`
+    "cookie": this.cookie
   };
   if(options && options.json == false) json = false;
   if(options && options.uri) uri = options.uri;
@@ -239,21 +193,34 @@ Safari.prototype.getBookById = function getBookById(id) {
   if(!id) return Promise.reject("id was not specified");
   if(!this.books[id]) return Promise.reject("the book you requested was not fetched yet");
   let book = this.books[id];
-  if(!book.meta || !book.chapters) return Promise.reject("the book you requested is missing some required information");
+  let { 
+    meta: { 
+      title, 
+      identifier, 
+      language, 
+      authors, 
+      cover, 
+      description, 
+      publishers
+    }, 
+    stylesheet,
+    chapters
+  } = book;
+  if(!chapters) return Promise.reject("the book you requested is missing some required information");
   let jsonBook = {
-    "title": book.meta.title,
-    "uuid": book.meta.identifier,
-    "language": book.meta.language,
-    "author": book.meta.authors.map( (json) => {
+    "title": title,
+    "uuid": identifier,
+    "language": language,
+    "author": authors.map( (json) => {
       return json.name;
     }),
-    "cover": book.meta.cover,
-    "description": book.meta.description,
-    "publisher": book.meta.publishers.map( (json) => {
+    "cover": cover,
+    "description": description,
+    "publisher": publishers.map( (json) => {
       return json.name;
     }),
-    "stylesheet": book.stylesheet,
-    "chapters": book.chapters.map( (chapter) => {
+    "stylesheet": stylesheet,
+    "chapters": chapters.map( (chapter) => {
       return {
         "fileName": chapter.filename,
         "assetBase": chapter["asset_base_url"],
@@ -273,22 +240,14 @@ Safari.prototype.getBookById = function getBookById(id) {
 * returns the book content
 *
 * @param {String} id - the id of the specified book
-* @param {String} username - the username of the safaribook user
-* @param {String} password - the password of the safaribook user
 *
 * @return {Object} body - returns the book json
 */
-Safari.prototype.fetchBookById = function fetchBookById(id, username, password) {
+Safari.prototype.fetchBookById = function fetchBookById(id) {
   debug(`fetchBookById called with id: ${id}`);
   if(!id) return Promise.reject("id was not specified");
-  if(!username || !password) return Promise.reject("username or password was not specified");
-  // ## validation successful
-  // ## fetch required content
-  return this.authorizeUser(username, password).then( (accessToken) => {
-    // ### user authorized, fetch meta
-    logger.log(`the user "${username}" was successfully authorized...`);
-    return this.fetchMeta(id);
-  }).then( (meta) => {
+  return this.fetchMeta(id)
+  .then( (meta) => {
     // ### meta fetched; fetch flat-toc
     logger.log(`downloaded meta files...`);
     return this.fetchTOC(id);

package.json

@@ -4,7 +4,8 @@
   "description": "a SafariBooksOnline-Downloader and .epub creator",
   "main": "index.js",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "safaribooks": "node ./index.js"
   },
   "bin": {
     "safaribooks-downloader": "./index.js"