Add session file

pull/62/head
MillenniumEarl 2020-12-26 15:23:52 +01:00
parent a67d8c0901
commit 711f1852f3
2 changed files with 154 additions and 0 deletions

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@ -0,0 +1,141 @@
"use strict";
// Core modules
const fs = require("fs");
const promisify = require("util").promisify;
// Public modules from npm
const md5 = require("md5");
// Promisifed functions
const areadfile = promisify(fs.readFile);
const awritefile = promisify(fs.writeFile);
const aunlinkfile = promisify(fs.unlink);
class Session {
constructor(path) {
/**
* Max number of days the session is valid.
*/
this.SESSION_TIME = 1;
/**
* Path of the session map file on disk.
*/
this._path = path;
/**
* Indicates if the session is mapped on disk.
*/
this._isMapped = fs.existsSync(this._path);
/**
* Date of creation of the session.
*/
this._created = new Date(Date.now());
/**
* MD5 hash of the username and the password.
*/
this._hash = null;
}
//#region Private Methods
/**
* @private
* Get the difference in days between two dates.
* @param {Date} a
* @param {Date} b
*/
_dateDiffInDays(a, b) {
const MS_PER_DAY = 1000 * 60 * 60 * 24;
// Discard the time and time-zone information.
const utc1 = Date.UTC(a.getFullYear(), a.getMonth(), a.getDate());
const utc2 = Date.UTC(b.getFullYear(), b.getMonth(), b.getDate());
return Math.floor((utc2 - utc1) / MS_PER_DAY);
}
/**
* @private
* Convert the object to a dictionary serializable in JSON.
*/
_toJSON() {
return {
created: this._created,
hash: this._hash,
};
}
//#endregion Private Methods
//#region Public Methods
create(username, password) {
// First, create the hash of the credentials
const value = `${username}%%%${password}`;
this._hash = md5(value);
// Update the creation date
this._created = new Date(Date.now());
}
/**
* @public
* Save the session to disk.
*/
async save() {
// Update the creation date
this._created = new Date(Date.now());
// Convert data
const json = this._toJSON();
const data = JSON.stringify(json);
// Write data
await awritefile(this._path, data);
}
/**
* @public
* Load the session from disk.
*/
async load() {
// Read data
const data = await areadfile(this._path);
const json = JSON.parse(data);
// Assign values
this._created = json.created;
this._hash = json.hash;
}
/**
* @public
* Delete the session from disk.
*/
async delete() {
await aunlinkfile(this._path);
}
/**
* @public
* Check if the session is valid.
*/
isValid(username, password) {
// Get the number of days from the file creation
const diff = this._dateDiffInDays(new Date(Date.now()), this._created);
// The session is valid if the number of days is minor than SESSION_TIME
let valid = diff < this.SESSION_TIME;
if(valid) {
// Check the hash
const value = `${username}%%%${password}`;
valid = md5(value) === this._hash;
}
return valid;
}
//#endregion Public Methods
}
module.exports = Session;

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@ -8,6 +8,9 @@ const {join} = require("path");
// Public modules from npm // Public modules from npm
const log4js = require("log4js"); const log4js = require("log4js");
// Modules from file
const Session = require("./classes/session");
/** /**
* Class containing variables shared between modules. * Class containing variables shared between modules.
*/ */
@ -43,6 +46,10 @@ class Shared {
* @type log4js.Logger * @type log4js.Logger
*/ */
static #_logger = log4js.getLogger(); static #_logger = log4js.getLogger();
/**
* Session on the F95Zone platform.
*/
static #_session = new Session(join(tmpdir(), "f95session.json"));
//#endregion Properties //#endregion Properties
//#region Getters //#region Getters
@ -94,6 +101,12 @@ class Shared {
static get cachePath() { static get cachePath() {
return join(tmpdir(), "f95cache.json"); return join(tmpdir(), "f95cache.json");
} }
/**
* Session on the F95Zone platform.
*/
static get session() {
return this.#_session;
}
//#endregion Getters //#endregion Getters
//#region Setters //#region Setters