master to 77d0ef05e2360bba2e1201eaff3c899e349c2a25 · nicolas.paschoud / 2019_TP2

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.gitignore

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		##

		projet/node_modules*

		############### MacOS
		# General
		.DS_Store

documentation/Hyperdrive.md

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		# Hyperdrive

		## Une introduction

		Dans le cadre du cours de Développement Web Avancé, nous avons du réaliser un projet web. Durant ce projet, nous avons du créer une API REST afin d'offrir un accès aux données. Ce projet a été réalisé en Javascript en utilisant Node JS.

		## L'application

		Le projet que nous avons choisi de réaliser est un drive. Pour des besoins personnels, nous avons jugé ce projet pertinent et l'avons donc réalisé. Le but est donc de permettre à un utilisateur de s'enregistrer et de stocker des fichiers sur la plateforme. Il a aussi la possibilité de les organiser en créant des dossiers. Il a aussi la possibilité de les partager avec d'autre utilisateurs du service. Nous avons créer une interface simple découpée en quatre partie :

		- Une zone de menu pour se connecter, se déconnecter et créer des dossiers / importer des fichiers.
		- La zone de contenu du drive ou sont affichés tous les dossiers et fichiers de l'utilisateur.
		- Une zone d'information sur le fichier (nom, son propriétaire, la date d'upload, l'adresse d'upload)
		- Une zone de contenu affichants tous les fichiers que les autres utilisateurs partagent avec lui.

		L'utilisateur a la possibilité de s'inscrire ainsi que de se connecter au service. Lors de sa connexion, il reçoit un token lui permettant d'accéder à l'API. Lors de sa déconnexion, le token est détruit. Pour créer un dossier, il lui suffit de se mettre à un endroit spécifique et de cliquer sur le bouton "New File" après avoir renseigné le nom du dossier à créer.

		Pour permettre la géolocalisation des fichiers, nous avons utilisé 2 API publiques qui sont :

		- https://ip-api.com/ Cette API nous permet de récupérer les informations de localisation d'une adresse IP. Nous pouvons grâce à celle-ci, récupérer les latitude et longitude que nous stockons dans la base de données.
		- http://bot.whatismyipaddress.com Cette API permet de récupérer l'adresse ip de l'ordinateur courant. Nous l'utilisons exclusivement pour la raisons suivantes. Nous travaillons en local, et n'avons pas déployé de serveur public. Nous ne pouvons donc pas récupérer l'adresse du client qui fait une requête sur l'API car il s'agit d'une adresse privée. Il est cependant facile de modifier cette partie du code pour utiliser l'adresse du client au cas ou nous voudrions rendre notre API public.

		## Installation

		Avant de faire fonctionner le site, assurez vous d'avoir la plateforme Node JS d'installée. Installer ensuite les packages nécessaire au fonctionnement du site en vous rendant à la racine du projet et en executant la commande suivante : npm install

		Pour démarrer le site il faut réaliser ces 2 étapes :

		- Se rendre dans le dossier db se trouvant dans la hiérarchie du projet et taper la commande docker-compose up -d. Assurez-vous que le port 3306 est libre pour permettre au service MySQL de démarrer correctement.
		- Se rendre dans le projet ou se trouve le fichier hyperdrive-rest.js et taper la commande node hyperdrive-rest.js. après vous être assurer que le port 8080 n'est pas utilisé par un autre service. Le site est accessible à l'adress de votre ordinateur sur le port 8080.

		## Répartition

		Fleury Noé :

		- Upload / Download des fichiers
		- Localisation de ceux-ci à l'upload
		- JWT
		- Partage des fichiers

		Paschoud Nicolas :

		- Base de donnée
		- Requêtes SQL (sql-request.js)
		- Affichage de l'arborescence dans le drive
		- Affichage des informations du fichier
		- Création d'un dossier

		## Architecture

		L'interraction entre les API se présente sous cette forme.

		![hyperdrive](/Users/klaus/Documents/Web/Back/2019_tp2/documentation/hyperdrive.png)

		- Le bloc Client fais des appels à l'API hyperdrive qui lui réponds avec les données que le client souhaite. Le client les traites et les affiches à sa guise.
		- L'API Hyperdrive réponds à des requêtes des clients. Il ne fait appel qu'en cas de besoin aux API whatismyipaddress et ip-api.
		- L'API ip-api est appelée par hyperdrive seulement lorsque le client upload un fichier. Cet appel permet de retourner l'addresse de la personne en fonction de son IP. Les latitudes et longitudes sont stockée par l'hyperdrive dans le bloc SQL
		- Le bloc whatismyipaddress n'est util que dans le cadre du développement. Cette API nous sert à récupérer notre IP pour ensuite faire un appel à ip-api.

		Voici comment se présente notre architecture

		<img src="./architecture.png" height="1000px">

		Nous avons plusieurs dossier principaux :

		- /

		A la racine se trouve les fichiers principaux de l'API :

		- hyperdrive-rest.js

		Il s'agit du fichier contenant le traitement pour chacune des routes.

		- sql-request.js

		Ce fichier permet de faire des requêtes SQL vers la base de données.

		- front/

		Ce dossier contient tout le frontend de l'application.

		- images

		Ce dossier contient 2 petites images faites main pour l'affichage des dossiers et des fichiers.

		- styles

		Il s'agit du dossier contenant tous le style du site.

		- show-content.js

		Ce fichier est le plus important du frontend. C'est lui qui s'occupe de faire des requêtes vers notre API et de faire l'affichage de nos données correctement

		-

		## Technologies

		Pour la réalisation de ce projet, nous avons utilisé la plateform Node JS pour la réalisation de notre API REST. Nous avons aussi réaliser une base de données relationnelle MySQL qui se trouve dans un container. Tout notre projet a été réaliser en Javascript en utilisant les modules Node JS suivant :

		- Express nous a permis de créer nos routes.
		- MySQL nous a permis de faire des requêtes SQL vers la base de donnée
		- Crypto-js nous a permis de faire la partie JWT
		- http nous a permis de faire des appels vers les API public

		Pour le frontend, nous avons 2 technologies principalement:

		- jQuery nous a permis de faire des requêtes vers l'API REST
		- JavaScript nous a permis de gérer l'affichage à la réception des données

		## Routes

		### /

		La route principale retourne la page principale du site (index.html).

		### /login

		Cette route permet de créer un token pour l'utilisateur si il est inscrit au site.

		Paramètre :

		- pseudo : Pseudo de l'utilisateur.
		- password : Mot de passe de l'utilisateur.

		Retour :

		Le retour de cette route est un objet JSON formé de cette manière :

		```json
		{
		"route": "/login",
		"resCode": 0,
		"signedToken": jwt.signedToken,
		"comment": `Password for user '${ user }' true.`
		}
		```



		### /logout

		Logout permet de supprimer un token lorsqu'un utilisateur se deconnecte.

		Param :

		- Token : Token de l'utilisateur a déconnecter.

		### /register

		Cette route permet d'inscrire un utilisateur au service de l'hyperdrive.

		Paramètres :

		- pseudo : Pseudo du nouvel utilisateur.
		- password : Mot de passe du nouvel utilisateur.

		### /share/:file_id/:to_user

		Cette route permet de partager un fichier avec un utilisateur.

		Paramètres :

		- token : Il s'agit du token de l'utilisateur qui souhaite partage un fichier.
		- file_id : Il s'agit de l'id du fichier à partager.
		- to_user : Il s'agit de la personne à qui on souhaite partager le fichier.

		### /upload

		Cette fonction permet d'uploader un fichier dans un path.

		Paramètre :

		- token : Token d'authentification de l'utilisateur.
		- file_name : Il s'agit du nom du fichier.

		### /download/:file_id

		Cette fonction permet de télécharger un fichier.

		Paramètre :

		- file_id : Id du fichier que l'on souhaite télécharger.
		- token : Token d'authentification de l'utilisateur.

		### /change-path*

		Cette fonction permet d'afficher le contenu d'un dossier.

		Paramètres :

		- token : Token d'authentification de l'utilisateur.
		- path : Il s'agit du dossier dont le contenu doit être affiché.

		Retour :

		Cette route retour un tableau d'objet JSON. Chaque object est soit un dossier, soit un fichier.

		Voici l'exemple d'un objet fichier. Cet objet se trouve dans un tableau.

		```json
		{
		"paths": "/a",
		"login": "a",
		"parent": null,
		"file_id": "ab",
		"file_name": "deux"
		}
		```

		Voici l'exemple d'un objet dossier. Cet objet se trouve dans un tableau.

		```json
		{
		"paths": "/a/coucou",
		"login": "a",
		"parent": "/a",
		"file_id": null,
		"file_name": null
		}
		```

		Un dossier possède un parent, car il se trouve dans un dossier. Dans le cas du dossier, le champ path indique la ou se trouve le fichier ainsi que son nom. Le dernier élément est le nom, tandis que tout ce qui se trouve avant est la ou est stocké le fichier.

		A l'inverse, un fichier se trouve dans un dossier, il a donc un path. Il est certe enfant d'un dossier, mais la seule information de ou il se trouve nous suffit.

		### /create-path*

		Cette fonction permet de créer un dossier à un endroit spécifique.

		Paramètres :

		- token : Token d'authentification de l'utilisateur.
		- path : Il s'agit du nouveau dossier à créer.

		### /get-info

		La route get-info nous permet de récupérer les informations d'un fichier.

		Paramètres :

		- file_id : Id du fichier dont on souhaite avoir les informations.
		- token : Il s'agit du token d'authentification.

		### /show-shared-file

		Cette route permet de récupérer tous les fichiers partagé avec un utilisateur.

		Paramètres :

		- token : Le token nous permet de récupérer l'id de l'utilisateur.

		Retour :

		La réponse est un tableau d'objet JSON. Chaque objet contient ces informations :

		```json
		{
		"login": "b", // La personne qui a cherché le fichier
		"file_id": "abcd", // Id du fichier
		"file_name": "un" // Nom du fichier
		}
		```

		## Conclusion

		Lors du développement de ce drive, nous avons pu utiliser des technologies nouvelles ainsi qu'un manière intéressante de dévelloper. La programmation asynchrone fut difficile à prendre en main, mais nous y somme arrivé. Le développement de ce drive fut fort interessant et captivant, nous avons pris beaucoup de plaisir. Le temps nous a malheureusement manqué pour nous permettre de faire quelque chose qui nous satisfait à 100%.

		Nous vous proposons quand même une version intéressante et bien aboutit. Certaines fonctionnalités prévue au début on été revue et même parfois supprimées car leur présence ne faisait aucun sens.
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documentation/architecture.png

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documentation/hyperdrive.png

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projet/db/data.sql

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		USE hyperdrive;

		INSERT INTO Users
		VALUES
		("a", "test"),
		("b", "test"),
		("c", "test"),
		("d", "test"),
		("e", "test");

		INSERT INTO Paths
		VALUES
		("/a", "a", NULL),
		("/a/coucou", "a", "/a"),
		("/a/coucou/test", "a", "/a/coucou"),
		("/b", "b", NULL),
		("/c", "c", NULL),
		("/c/test", "c", "/c"),
		("/d", "d", NULL),
		("/e", "e", NULL);

		INSERT INTO Files
		VALUES
		("abcd", "un", "/a", 46.2054, 6.1459),
		("adssb", "deux", "/a", 46.2054, 6.1459),
		("accb", "deux", "/a/coucou", 46.2054, 6.1459),
		("abnnnnn", "deux", "/a/coucou", 46.2054, 6.1459),
		("@dfsg", "trois", "/c/test", 46.2054, 6.1459),
		("gbvaf", "quatre", "/b", 46.2054, 6.1459),
		("dsfgh", "cinq", "/d", 46.2054, 6.1459),
		("sdfa", "six", "/e", 46.2054, 6.1459);

		INSERT INTO Shares
		VALUES
		("a", "b", "abcd"),
		("a", "c", "abcd"),
		("a", "d", "abcd"),
		("c", "e", "@dfsg");

projet/db/docker-compose.yml

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		version: '3'
		services:
		db:
		image: mysql:5
		restart: always
		container_name: hyperdrive
		environment:
		MYSQL_ROOT_PASSWORD: superhyper
		MYSQL_DATABASE: hyperdrive
		MYSQL_USER: hyperdrive
		MYSQL_PASSWORD: hyper
		ports:
		- '3306:3306'
		expose:
		- 3306
		volumes:
		- ./hyperdrive.sql:/docker-entrypoint-initdb.d/hyperdrive.sql
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projet/db/hyperdrive.sql

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		CREATE DATABASE IF NOT EXISTS `hyperdrive` DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;
		USE `hyperdrive`;

		-- mysql -h localhost -P 3306 --protocol=tcp -u root -p
		-- Creating tables

		CREATE TABLE IF NOT EXISTS Users (
		login varchar(60) NOT NULL,
		passwd varchar(256) NOT NULL,
		PRIMARY KEY (login)
		);

		CREATE TABLE IF NOT EXISTS Paths (
		paths varchar(400) NOT NULL,
		login varchar(60) NOT NULL,
		parent varchar(400),
		PRIMARY KEY (paths),
		FOREIGN KEY (login) REFERENCES Users(login),
		FOREIGN KEY (parent) REFERENCES Paths(paths)
		);

		CREATE TABLE IF NOT EXISTS Files (
		file_id varchar(100) NOT NULL,
		file_name varchar(50) NOT NULL,
		login varchar(60) NOT NULL,
		paths varchar(400) NOT NULL,
		lat FLOAT,
		lng FLOAT,
		PRIMARY KEY (file_id),
		FOREIGN KEY (paths) REFERENCES Paths(paths),
		FOREIGN KEY (login) REFERENCES Users(login)
		);

		CREATE TABLE IF NOT EXISTS Shares (
		pseudo_1 varchar(60) NOT NULL,
		pseudo_2 varchar(60) NOT NULL,
		file_id varchar(100) NOT NULL,
		PRIMARY KEY (pseudo_1, pseudo_2, file_id),
		FOREIGN KEY (pseudo_1) REFERENCES Users(login),
		FOREIGN KEY (pseudo_2) REFERENCES Users(login),
		FOREIGN KEY (file_id) REFERENCES Files(file_id)
		);


		-- Inserting datas
		INSERT INTO Users
		VALUES
		("a", "test"),
		("b", "test"),
		("c", "test"),
		("d", "test"),
		("e", "test"),
		("noe", "prov");

		INSERT INTO Paths
		VALUES
		("/a", "a", NULL),
		("/a/coucou", "a", "/a"),
		("/b", "b", NULL),
		("/c", "c", NULL),
		("/c/test", "c", "/c"),
		("/d", "d", NULL),
		("/e", "e", NULL),
		("/n", "noe", NULL);

		INSERT INTO Files
		VALUES
		("abcd", "un", 'a', "/a", 46.2054, 6.1459),
		("ab", "deux", 'a', "/a", 46.2054, 6.1459),
		("@dfsg", "trois", 'c', "/c/test", 46.2054, 6.1459),
		("gbvaf", "quatre", 'b', "/b", 46.2054, 6.1459),
		("dsfgh", "cinq", 'd', "/d", 46.2054, 6.1459),
		("sdfa", "six.txt", 'e', "/e", 46.2054, 6.1459),
		("liblb", "myfile.txt", 'noe', "/n", 46.2054, 6.1459);

		INSERT INTO Shares
		VALUES
		("a", "b", "abcd"),
		("a", "c", "abcd"),
		("a", "d", "abcd"),
		("c", "e", "@dfsg");


		SELECT pseudo_2, Files.file_id, Files.file_name
		FROM Shares LEFT JOIN Files ON Shares.file_id=Files.file_id
		WHERE pseudo_2='b';
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projet/db/request.sql

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		-- Get content of a folder
		-- paths \| login \| parent \| file_id \| file_name
		SELECT Paths.paths, login, parent, Files.file_id, Files.file_name FROM Paths
		LEFT JOIN Files ON Files.paths = Paths.paths
		WHERE Files.file_id IS NOT NULL
		AND login='a'
		AND Paths.paths='/a/coucou'
		OR Paths.parent='/a/coucou';
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projet/files/liblb

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		coucou nicolas

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		nothing to see here..

projet/front/element-style.js

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		function new_file(file_name, file_id, document_id) {
		content = `
		<div class="file" id="${file_id}">
		<p>
		<button onclick="getInfo('${file_id}')">
		<img src="/images/file_img.png" height="50px">
		</button>
		<p>${file_name}</p>
		</p>
		</div>
		`
		document.getElementById(document_id).innerHTML += content;
		}

		function new_folder (folder_name, path) {
		content = `
		<div class="folder">
		<p>
		<button onclick="change_path('${path}')">
		<img src="/images/folder_img.png" height="50px">
		</button>
		<p>${folder_name}</p>
		</p>
		</div>
		`;
		document.getElementById("content-drive").innerHTML += content;
		}

		function show_info(infos){
		let el = document.getElementById("info-content");
		/*
		addedon: 1576691707
		file_id: "abcd"
		file_name: "un"
		lat: 46.2054
		lng: 6.1459
		login: "a"
		paths: "/a"
		*/
		el.innerHTML = `
		<p>File name : ${infos.file_name}</p>
		<p>Path : ${infos.paths}</p>
		<p>Owner : ${infos.login}</p>
		<p>Localisation :<br>
		lat : ${infos.lat}<br>
		lng : ${infos.lng}
		</p>
		<p>Adresse : Mettre adresse avec gmap ou autre</p>
		<button onclick="download('${infos.file_id}')">Download</button>
		`;
		}
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projet/front/index.html

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		<!DOCTYPE html>
		<html lang="en">
		<head>
		<meta charset="UTF-8">
		<meta name="viewport" content="width=device-width, initial-scale=1.0">
		<link rel="stylesheet" type="text/css" href="/styles/style.css">
		<script src="jquery-3.4.1.min.js"></script>
		<script src="element-style.js"></script>
		<script src="show-content.js"></script>
		<meta http-equiv="X-UA-Compatible" content="ie=edge">
		<title>Document</title>
		</head>
		<body>
		<h1>Hyperdrive</h1>
		<div id="hyperdrive">
		<div id="menu">
		<h3>Menu</h3>
		<div id="login-div">
		<input type="text" id="username"><br>
		<input type="password" id="passwd"><br>
		<button onclick="login()" id="login-button">Login</button>
		</div>
		<div id="menu-more" style="display: none;">
		<input type="text" id="foldername" placeholder="folder name">
		<button onclick="newFolder()">New Folder</button><br>
		<input type="text" id="filename" placeholder="file name">
		<button onclick="newFile()">New File</button><br>
		<button onclick="showSharedContent()">Shared with me</button>
		</div>
		</div>
		<div id="drive">
		<h3>Drive</h3>
		<div id="dir_name"></div>
		<div id="content-drive">

		</div>
		<form action="/upload/n" method="POST" encType="multipart/form-data">
		Choose a file :<br>
		<input type="file" name="my_file"><br>
		<input type="submit" value="Send">
		</form>
		</div>
		<div id="info">
		<h3>Infos</h3>
		<div id="info-content">

		</div>
		</div>
		<div id="shared">
		<h3>Shared with me</h3>
		<div id="shared-content">

		</div>
		</div>
		</div>
		</body>
		</html>
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projet/front/show-content.js

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		"use strict";

		let my_login = null;
		let token = null;

		function change_path(path) {
		document.getElementById("content-drive").innerHTML = "";
		$.ajax({url: 'change-path'+path+"/"+token, success: function(result){
		let p = path.split("/");
		if (p.length === 2){
		p = null;
		} else {
		p.pop()
		p = p.join("/");
		}
		appendLinkToParent(path, p);
		for (let i in result){
		if (result[i].file_id){
		new_file(result[i].file_name, result[i].file_id, "content-drive");
		} else {
		if (path !== result[i].paths){
		let name = result[i].paths.split("/");
		new_folder(name[name.length-1], result[i].paths);
		}
		}
		}
		}});
		}

		function appendLinkToParent(path, parent) {
		let el = document.getElementById("dir_name");
		let btn = ""
		if (parent) {
		btn = `<button onclick="change_path('${parent}')"><-</button>`;
		}
		el.innerHTML = `
		<p>Directory :</p>
		<p id="path-dir-drive">${path}</p>
		${btn}
		`;

		}

		function login() {
		let username = document.getElementById("username").value
		let passwd = document.getElementById("passwd").value

		$.ajax({url: 'login?user='+username+'&pass='+passwd, success: function(result){
		my_login = username;
		token = result.signedToken;
		change_path('/' + username);
		let el = document.getElementById("login-button");
		el.innerHTML = "Disconnect";
		el.onclick = disconnect;
		document.getElementById("menu-more").style.display = "block";
		}});
		}

		function disconnect(){
		$.ajax({url: 'logout?token=' + token, success: function(result){
		token = null;
		let el = document.getElementById("login-button");
		el.innerHTML = "Login";
		el.onclick = login;
		document.getElementById("content-drive").innerHTML = "";
		document.getElementById("dir_name").innerHTML = "";
		document.getElementById("menu-more").style.display = "none";
		}});
		}

		function showSharedContent() {
		let el = document.getElementById("shared-content");
		$.ajax({url: '/show-shared-file?token=' + token,
		success: function(result){
		console.log(result);
		for (let i in result){
		new_file(result[i].file_name, result[i].file_id, "shared-content");
		}
		}
		});
		}

		function newFolder() {
		let foldername = document.getElementById("foldername").value;
		let path = document.getElementById("path-dir-drive").textContent;
		$.ajax({url: 'create-path' + path + "/" + foldername + '/' + token,
		success: function(result){
		change_path(path);
		}
		});
		}

		function newFile() {
		filename = document.getElementById("filename").value;
		console.log(filename);
		}

		function getInfo(file_id){
		$.ajax({url: 'get-info?file_id=' + file_id + '&token=' + token,
		success: function(result){
		show_info(result[0]);
		}
		});
		}

		function download(file_id){
		console.log("Download : " + file_id);
		}
		No newline at end of file

projet/front/styles/style.css

0 → 100644

+56 −0

Original line number	Diff line number	Diff line
		* {
		margin: 2.5px;
		padding: 2px;
		box-sizing: border-box;
		}

		button {
		border: none;
		padding: 5px;
		}

		button:hover {
		background-color: grey;
		}

		#menu {
		border: solid grey 2px;
		width: 30%;
		float: left;
		}

		#drive {
		border: solid grey 2px;
		width: 30%;
		float: left;
		}

		#info {
		border: solid grey 2px;
		width: 30%;
		float: left;
		}

		#shared {
		border: solid grey 2px;
		width: 30%;
		float: left;
		}

		.folder {
		float: left;
		}

		.folder p{
		font-size: 10pt;
		text-align: center;
		}

		.file {
		float: left;
		}

		.file p{
		font-size: 10pt;
		text-align: center;
		}
		No newline at end of file

projet/hyperdrive-rest.js

0 → 100644

+448 −0

Original line number	Diff line number	Diff line
		"use strict";
		const CryptoJS = require("crypto-js");
		const http = require("http");
		var fileupload = require("express-fileupload");
		var multer = require('multer')


		var storage = multer.diskStorage(
		{
		destination: './files/',
		filename: function ( req, file, cb ) {
		cb( null, Math.round(Math.random()*100) + Date.now().toString() );
		}
		}
		);
		var upload = multer( { storage: storage } );


		const express = require('express');
		const app = express();
		const port = 8080;
		const sql = require('./sql-request');


		///// JWT part /////

		var valid_tokens = [];

		String.prototype.hashCode = function() {
		var hash = 0, i, chr;
		if (this.length === 0) return hash;
		for (i = 0; i < this.length; i++) {
		chr = this.charCodeAt(i);
		hash = ((hash << 5) - hash) + chr;
		hash \|= 0; // Convert to 32bit integer
		}
		return hash;
		};

		function tob64(elem){
		return Buffer.from(elem.toString()).toString('base64').slice(0, -2);
		}

		function Header(typ, alg){
		this.typ = typ;
		this.alg = alg;

		this.toString = function(){ return "{" + this.typ + "," + this.alg + "}"};
		}

		function Payload(user, pass_enc){
		this.user = user;
		this.pass_enc = pass_enc;

		this.toString = function(){ return "{" + this.user + "," + this.pass_enc + "}"};

		}

		function Signature(token){
		const secret = "our super hyperdrive secret" + new Date();
		return CryptoJS.HmacSHA512(token, secret);
		}

		function JWT(pl_user, pl_pass){
		this.header = new Header("jwt", "HS512");
		this.payload = new Payload(pl_user, pl_pass.hashCode());
		let token = tob64(this.header) + "." + tob64(this.payload);
		let signature = new Signature("token");
		this.signedToken = token + "." + signature;
		}


		function add_token(token, user) {

		for (let i = 0; i < valid_tokens.length; i++) {
		if(Object.keys(valid_tokens[i])[0] == token){
		valid_tokens.splice(i, 1);
		console.log("Unable to add token. (token already present)");
		break;
		}
		}
		let obj = {}; obj[token.toString()] = user;
		valid_tokens.push(obj);
		console.log(valid_tokens)

		console.log("Successfully added token.");


		}

		function remove_token(token) {

		for (let i = 0; i < valid_tokens.length; i++) {
		if(Object.keys(valid_tokens[i])[0] == token){
		valid_tokens.splice(i, 1);
		console.log("Successfully removed token from valid_tokens.");
		return true;
		}
		}

		console.log("Unable to remove token from valid_tokens. (Token not present)");


		}

		// verify the token
		// return : user if exist
		function verify_token(token) {
		for (let i = 0; i < valid_tokens.length; i++) {
		if(Object.keys(valid_tokens[i])[0] == token)
		return valid_tokens[i][token];
		}
		return false;
		}


		///// End JWT part /////


		app.get('/', (req, res) => {
		res.sendFile(__dirname + '/front/index.html');
		});

		/* Login
		* param : pseudo
		* param : password
		*/
		// resCode : [ 0: User now logged in, 1: False password, 2: Invalid username, 3: Empty user or pass ]
		app.get('/login', (req, res) => {

		const user = req.query['user'];
		const pass = req.query['pass'];
		sql.userExist(user, pass, (element) => {
		if (element)
		check_login(user, pass, element, res);
		});

		});

		function check_login(user, pass, userObject, res) {
		if (!user \|\| !pass) {
		res.send({
		"route": "/login",
		"resCode": 4,
		"comment": "Please enter a username and a password."
		})
		}
		else{
		if (userObject){
		if (userObject.passwd == pass.hashCode()) {
		let jwt = new JWT(user, pass);

		res.send({
		"route": "/login",
		"resCode": 0,
		"signedToken": jwt.signedToken,
		"comment": `Password for user '${ user }' true.`
		})

		add_token(jwt.signedToken, user);

		}
		else {
		res.send({
		"route": "/login",
		"resCode": 1,
		"comment": `Password for user '${ user }' false.`
		})
		}
		}
		else {
		res.send({
		"route": "/login",
		"resCode": 2,
		"comment": `Username '${ user }' don't exist.`
		})
		}
		}
		}

		// resCode : [ 0: Token is valid, 1: Token is not valid, 3: Empty token ]
		app.get('/testmytoken', (req, res) => {

		let token = req.query['token'];

		if (!token) {
		res.send({
		"resCode": 3,
		"comment": "Please enter a token."
		})
		}

		if (verify_token(token)){
		res.send({
		"resCode": 0,
		"comment": "Your token is valid."
		})
		}
		else {
		res.send({
		"resCode": 1,
		"comment": "Your token is not valid."
		})
		}

		})

		// resCode : [ 0: Logout ok, 1: Already logged out, 3: Empty token ]
		app.get('/logout/', (req, res) => {

		let token = req.query['token'];

		if (!token) {
		res.send({
		"resCode": 3,
		"comment": "Please enter a token."
		})
		}

		else {
		if (verify_token(token)){
		remove_token(token);
		res.send({
		"resCode": 0,
		"comment": "Your are now logged out."
		})
		}
		else {
		res.send({
		"resCode": 1,
		"comment": "Your are already logged out."
		})
		}
		}


		})

		/**
		* Request register
		* param : pseudo
		* param : password
		*/
		app.get('/register/', (req, res) => {
		sql.addUser(req.query['login'], req.query['pass']);
		res.send(`Request for a register (${req.query['login']}, ${req.query['pass']})`);
		})

		/**
		* Request to share a file with a user
		* param : file_id
		* param : user1
		* param : user2
		* user1 share a file_id with user2
		*/
		app.get('/share/:file_id/:to_user', (req, res) => {

		let token = req.query["token"]
		let user = verify_token(token);
		console.log("user : " + user)

		if (req.params['to_user'] && req.params['file_id']){
		let to_user = req.params['to_user'];
		let file_id = req.params['file_id'];
		sql.addSharing(user, to_user, file_id).then(function (r) {
		res.send(r);
		})
		}
		else{
		res.send("Unable to share. Please provide a user to share with and a file_id.");
		}
		})

		/**
		* Request to upload a file
		*/
		// app.get('/upload/', (req, res) => {
		// let d = new Date();
		// let date_upload = d.getTime();
		// // "abcd", "un", "/a", 46.2054, 6.1459, date_upload



		// res.send(`Request for an upload (${req.query['file']})`)
		// });



		app.post('/upload*', upload.single('my_file'), (req, res) => {
		// res.send(`Request for an upload (${req.query['file']})`)

		let token = req.query["token"]
		let user = verify_token(token)

		if (user){
		let path = req.params['0']

		if (req.file){

		var file_id = Math.round(Math.random() * 100) + Date.now();
		var file_name = "test"




		let lat;
		let lon;

		http.get('http://bot.whatismyipaddress.com', (result) => {
		result.setEncoding('utf8');
		result.on('data', function(chunk){
		let ip = chunk;
		http.get('http://ip-api.com/json/' + ip, (resp) => {
		let data = '';
		resp.on('data', (chunk) => {
		data += chunk;
		});

		resp.on('end', () => {
		lat = JSON.parse(data).lat.toFixed(3);
		lon = JSON.parse(data).lon.toFixed(3);

		// add to BDD
		sql.addFile(file_id, file_name, user, path, lat, lon, (result) => {
		res.send(result)
		})

		});
		});
		});
		});
		}
		else{
		console.log("Please enter a file");
		}
		}
		else{
		res.send("Please be connected")
		}


		})

		app.get('/download/:file_id', (req, res) => {
		let token = req.query["token"]


		let user = verify_token(token);
		if (user){
		sql.verifyFileID(user, file_id, (filename) => {
		console.log(filename)
		if (filename){
		res.download("files/" + file_id, filename);
		}
		else{
		res.send("Can't download (not your file).")
		}
		})
		}
		else{
		res.send("Can't download (please be connected).")
		}
		})

		/**
		* This function return the content of a path
		* param path : Path of the folder we want to show
		*/
		app.get('/change-path*', (req, res) => {
		let path = req.params['0'].split("/");
		path.pop();
		path = path.join("/");
		let tok = req.params['0'].split("/").pop();
		let name = verify_token(tok);
		if (name) {
		sql.changeDirectory(name, path,
		(content) => {
		res.send(content);
		});
		}
		})

		app.get('/create-path*', (req, res) => {
		let c = req.params['0'];

		let tok = c.split("/").pop();
		let path = c.split("/");
		path.pop();
		path = path.join("/");

		let parent = path.split("/");
		parent.pop();
		parent = parent.join("/");

		let name = verify_token(tok);
		if (name) {
		sql.addPath(path, name, parent, (resp, msg) => {
		console.log(resp, msg);
		res.send(resp + " : " + msg);
		});
		}
		})

		/**
		* Get info of a file
		* @param {string} file_id Id of the file we want the infos
		* @param {string} token Token of the client
		*/
		app.get('/get-info', (req, res) => {
		let token = req.query["token"];
		let file_id = req.query["file_id"];
		let name = verify_token(token);
		console.log(token);
		if (name){
		sql.getInfo(file_id, name, (resp, msg) => {
		res.send(resp);
		});
		}
		});

		/**
		*
		*/
		app.get('/show-shared-file', (req, res) => {
		let token = req.query["token"];
		let name = verify_token(token);
		if (name){
		sql.getSharedFile(name, (result) => {
		if (result){
		let content = [];
		for (let i in result){
		console.log(result[i]);
		content.push({
		login: result[i].pseudo_2,
		file_id: result[i].file_id,
		file_name: result[i].file_name
		});
		}
		res.send(content);
		}
		});
		}
		});

		app.use(express.static('front'));
		app.use(fileupload());
		var upload = multer({ dest: "files/" })
		app.listen(port, () => console.log(`Hyperdrive listening on port ${port}!`))

projet/node_modules/.bin/mime

0 → 120000

+1 −0

Original line number	Diff line number	Diff line
		../mime/cli.js
		No newline at end of file

projet/node_modules/accepts/HISTORY.md

0 → 100644

+236 −0

Original line number	Diff line number	Diff line
		1.3.7 / 2019-04-29
		==================

		* deps: negotiator@0.6.2
		- Fix sorting charset, encoding, and language with extra parameters

		1.3.6 / 2019-04-28
		==================

		* deps: mime-types@~2.1.24
		- deps: mime-db@~1.40.0

		1.3.5 / 2018-02-28
		==================

		* deps: mime-types@~2.1.18
		- deps: mime-db@~1.33.0

		1.3.4 / 2017-08-22
		==================

		* deps: mime-types@~2.1.16
		- deps: mime-db@~1.29.0

		1.3.3 / 2016-05-02
		==================

		* deps: mime-types@~2.1.11
		- deps: mime-db@~1.23.0
		* deps: negotiator@0.6.1
		- perf: improve `Accept` parsing speed
		- perf: improve `Accept-Charset` parsing speed
		- perf: improve `Accept-Encoding` parsing speed
		- perf: improve `Accept-Language` parsing speed

		1.3.2 / 2016-03-08
		==================

		* deps: mime-types@~2.1.10
		- Fix extension of `application/dash+xml`
		- Update primary extension for `audio/mp4`
		- deps: mime-db@~1.22.0

		1.3.1 / 2016-01-19
		==================

		* deps: mime-types@~2.1.9
		- deps: mime-db@~1.21.0

		1.3.0 / 2015-09-29
		==================

		* deps: mime-types@~2.1.7
		- deps: mime-db@~1.19.0
		* deps: negotiator@0.6.0
		- Fix including type extensions in parameters in `Accept` parsing
		- Fix parsing `Accept` parameters with quoted equals
		- Fix parsing `Accept` parameters with quoted semicolons
		- Lazy-load modules from main entry point
		- perf: delay type concatenation until needed
		- perf: enable strict mode
		- perf: hoist regular expressions
		- perf: remove closures getting spec properties
		- perf: remove a closure from media type parsing
		- perf: remove property delete from media type parsing

		1.2.13 / 2015-09-06
		===================

		* deps: mime-types@~2.1.6
		- deps: mime-db@~1.18.0

		1.2.12 / 2015-07-30
		===================

		* deps: mime-types@~2.1.4
		- deps: mime-db@~1.16.0

		1.2.11 / 2015-07-16
		===================

		* deps: mime-types@~2.1.3
		- deps: mime-db@~1.15.0

		1.2.10 / 2015-07-01
		===================

		* deps: mime-types@~2.1.2
		- deps: mime-db@~1.14.0

		1.2.9 / 2015-06-08
		==================

		* deps: mime-types@~2.1.1
		- perf: fix deopt during mapping

		1.2.8 / 2015-06-07
		==================

		* deps: mime-types@~2.1.0
		- deps: mime-db@~1.13.0
		* perf: avoid argument reassignment & argument slice
		* perf: avoid negotiator recursive construction
		* perf: enable strict mode
		* perf: remove unnecessary bitwise operator

		1.2.7 / 2015-05-10
		==================

		* deps: negotiator@0.5.3
		- Fix media type parameter matching to be case-insensitive

		1.2.6 / 2015-05-07
		==================

		* deps: mime-types@~2.0.11
		- deps: mime-db@~1.9.1
		* deps: negotiator@0.5.2
		- Fix comparing media types with quoted values
		- Fix splitting media types with quoted commas

		1.2.5 / 2015-03-13
		==================

		* deps: mime-types@~2.0.10
		- deps: mime-db@~1.8.0

		1.2.4 / 2015-02-14
		==================

		* Support Node.js 0.6
		* deps: mime-types@~2.0.9
		- deps: mime-db@~1.7.0
		* deps: negotiator@0.5.1
		- Fix preference sorting to be stable for long acceptable lists

		1.2.3 / 2015-01-31
		==================

		* deps: mime-types@~2.0.8
		- deps: mime-db@~1.6.0

		1.2.2 / 2014-12-30
		==================

		* deps: mime-types@~2.0.7
		- deps: mime-db@~1.5.0

		1.2.1 / 2014-12-30
		==================

		* deps: mime-types@~2.0.5
		- deps: mime-db@~1.3.1

		1.2.0 / 2014-12-19
		==================

		* deps: negotiator@0.5.0
		- Fix list return order when large accepted list
		- Fix missing identity encoding when q=0 exists
		- Remove dynamic building of Negotiator class

		1.1.4 / 2014-12-10
		==================

		* deps: mime-types@~2.0.4
		- deps: mime-db@~1.3.0

		1.1.3 / 2014-11-09
		==================

		* deps: mime-types@~2.0.3
		- deps: mime-db@~1.2.0

		1.1.2 / 2014-10-14
		==================

		* deps: negotiator@0.4.9
		- Fix error when media type has invalid parameter

		1.1.1 / 2014-09-28
		==================

		* deps: mime-types@~2.0.2
		- deps: mime-db@~1.1.0
		* deps: negotiator@0.4.8
		- Fix all negotiations to be case-insensitive
		- Stable sort preferences of same quality according to client order

		1.1.0 / 2014-09-02
		==================

		* update `mime-types`

		1.0.7 / 2014-07-04
		==================

		* Fix wrong type returned from `type` when match after unknown extension

		1.0.6 / 2014-06-24
		==================

		* deps: negotiator@0.4.7

		1.0.5 / 2014-06-20
		==================

		* fix crash when unknown extension given

		1.0.4 / 2014-06-19
		==================

		* use `mime-types`

		1.0.3 / 2014-06-11
		==================

		* deps: negotiator@0.4.6
		- Order by specificity when quality is the same

		1.0.2 / 2014-05-29
		==================

		* Fix interpretation when header not in request
		* deps: pin negotiator@0.4.5

		1.0.1 / 2014-01-18
		==================

		* Identity encoding isn't always acceptable
		* deps: negotiator@~0.4.0

		1.0.0 / 2013-12-27
		==================

		* Genesis

projet/node_modules/accepts/LICENSE

0 → 100644

+23 −0

Original line number	Diff line number	Diff line
		(The MIT License)

		Copyright (c) 2014 Jonathan Ong <me@jongleberry.com>
		Copyright (c) 2015 Douglas Christopher Wilson <doug@somethingdoug.com>

		Permission is hereby granted, free of charge, to any person obtaining
		a copy of this software and associated documentation files (the
		'Software'), to deal in the Software without restriction, including
		without limitation the rights to use, copy, modify, merge, publish,
		distribute, sublicense, and/or sell copies of the Software, and to
		permit persons to whom the Software is furnished to do so, subject to
		the following conditions:

		The above copyright notice and this permission notice shall be
		included in all copies or substantial portions of the Software.

		THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
		EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
		MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
		IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
		CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
		TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
		SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

projet/node_modules/accepts/README.md

0 → 100644

+142 −0

Original line number	Diff line number	Diff line
		# accepts

		[![NPM Version][npm-version-image]][npm-url]
		[![NPM Downloads][npm-downloads-image]][npm-url]
		[![Node.js Version][node-version-image]][node-version-url]
		[![Build Status][travis-image]][travis-url]
		[![Test Coverage][coveralls-image]][coveralls-url]

		Higher level content negotiation based on [negotiator](https://www.npmjs.com/package/negotiator).
		Extracted from [koa](https://www.npmjs.com/package/koa) for general use.

		In addition to negotiator, it allows:

		- Allows types as an array or arguments list, ie `(['text/html', 'application/json'])`
		as well as `('text/html', 'application/json')`.
		- Allows type shorthands such as `json`.
		- Returns `false` when no types match
		- Treats non-existent headers as `*`

		## Installation

		This is a [Node.js](https://nodejs.org/en/) module available through the
		[npm registry](https://www.npmjs.com/). Installation is done using the
		[`npm install` command](https://docs.npmjs.com/getting-started/installing-npm-packages-locally):

		```sh
		$ npm install accepts
		```

		## API

		<!-- eslint-disable no-unused-vars -->

		```js
		var accepts = require('accepts')
		```

		### accepts(req)

		Create a new `Accepts` object for the given `req`.

		#### .charset(charsets)

		Return the first accepted charset. If nothing in `charsets` is accepted,
		then `false` is returned.

		#### .charsets()

		Return the charsets that the request accepts, in the order of the client's
		preference (most preferred first).

		#### .encoding(encodings)

		Return the first accepted encoding. If nothing in `encodings` is accepted,
		then `false` is returned.

		#### .encodings()

		Return the encodings that the request accepts, in the order of the client's
		preference (most preferred first).

		#### .language(languages)

		Return the first accepted language. If nothing in `languages` is accepted,
		then `false` is returned.

		#### .languages()

		Return the languages that the request accepts, in the order of the client's
		preference (most preferred first).

		#### .type(types)

		Return the first accepted type (and it is returned as the same text as what
		appears in the `types` array). If nothing in `types` is accepted, then `false`
		is returned.

		The `types` array can contain full MIME types or file extensions. Any value
		that is not a full MIME types is passed to `require('mime-types').lookup`.

		#### .types()

		Return the types that the request accepts, in the order of the client's
		preference (most preferred first).

		## Examples

		### Simple type negotiation

		This simple example shows how to use `accepts` to return a different typed
		respond body based on what the client wants to accept. The server lists it's
		preferences in order and will get back the best match between the client and
		server.

		```js
		var accepts = require('accepts')
		var http = require('http')

		function app (req, res) {
		var accept = accepts(req)

		// the order of this list is significant; should be server preferred order
		switch (accept.type(['json', 'html'])) {
		case 'json':
		res.setHeader('Content-Type', 'application/json')
		res.write('{"hello":"world!"}')
		break
		case 'html':
		res.setHeader('Content-Type', 'text/html')
		res.write('<b>hello, world!</b>')
		break
		default:
		// the fallback is text/plain, so no need to specify it above
		res.setHeader('Content-Type', 'text/plain')
		res.write('hello, world!')
		break
		}

		res.end()
		}

		http.createServer(app).listen(3000)
		```

		You can test this out with the cURL program:
		```sh
		curl -I -H'Accept: text/html' http://localhost:3000/
		```

		## License

		[MIT](LICENSE)

		[coveralls-image]: https://badgen.net/coveralls/c/github/jshttp/accepts/master
		[coveralls-url]: https://coveralls.io/r/jshttp/accepts?branch=master
		[node-version-image]: https://badgen.net/npm/node/accepts
		[node-version-url]: https://nodejs.org/en/download
		[npm-downloads-image]: https://badgen.net/npm/dm/accepts
		[npm-url]: https://npmjs.org/package/accepts
		[npm-version-image]: https://badgen.net/npm/v/accepts
		[travis-image]: https://badgen.net/travis/jshttp/accepts/master
		[travis-url]: https://travis-ci.org/jshttp/accepts

projet/node_modules/accepts/index.js

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		/*!
		* accepts
		* Copyright(c) 2014 Jonathan Ong
		* Copyright(c) 2015 Douglas Christopher Wilson
		* MIT Licensed
		*/

		'use strict'

		/**
		* Module dependencies.
		* @private
		*/

		var Negotiator = require('negotiator')
		var mime = require('mime-types')

		/**
		* Module exports.
		* @public
		*/

		module.exports = Accepts

		/**
		* Create a new Accepts object for the given req.
		*
		* @param {object} req
		* @public
		*/

		function Accepts (req) {
		if (!(this instanceof Accepts)) {
		return new Accepts(req)
		}

		this.headers = req.headers
		this.negotiator = new Negotiator(req)
		}

		/**
		* Check if the given `type(s)` is acceptable, returning
		* the best match when true, otherwise `undefined`, in which
		* case you should respond with 406 "Not Acceptable".
		*
		* The `type` value may be a single mime type string
		* such as "application/json", the extension name
		* such as "json" or an array `["json", "html", "text/plain"]`. When a list
		* or array is given the _best_ match, if any is returned.
		*
		* Examples:
		*
		* // Accept: text/html
		* this.types('html');
		* // => "html"
		*
		* // Accept: text/*, application/json
		* this.types('html');
		* // => "html"
		* this.types('text/html');
		* // => "text/html"
		* this.types('json', 'text');
		* // => "json"
		* this.types('application/json');
		* // => "application/json"
		*
		* // Accept: text/*, application/json
		* this.types('image/png');
		* this.types('png');
		* // => undefined
		*
		* // Accept: text/*;q=.5, application/json
		* this.types(['html', 'json']);
		* this.types('html', 'json');
		* // => "json"
		*
		* @param {String\|Array} types...
		* @return {String\|Array\|Boolean}
		* @public
		*/

		Accepts.prototype.type =
		Accepts.prototype.types = function (types_) {
		var types = types_

		// support flattened arguments
		if (types && !Array.isArray(types)) {
		types = new Array(arguments.length)
		for (var i = 0; i < types.length; i++) {
		types[i] = arguments[i]
		}
		}

		// no types, return all requested types
		if (!types \|\| types.length === 0) {
		return this.negotiator.mediaTypes()
		}

		// no accept header, return first given type
		if (!this.headers.accept) {
		return types[0]
		}

		var mimes = types.map(extToMime)
		var accepts = this.negotiator.mediaTypes(mimes.filter(validMime))
		var first = accepts[0]

		return first
		? types[mimes.indexOf(first)]
		: false
		}

		/**
		* Return accepted encodings or best fit based on `encodings`.
		*
		* Given `Accept-Encoding: gzip, deflate`
		* an array sorted by quality is returned:
		*
		* ['gzip', 'deflate']
		*
		* @param {String\|Array} encodings...
		* @return {String\|Array}
		* @public
		*/

		Accepts.prototype.encoding =
		Accepts.prototype.encodings = function (encodings_) {
		var encodings = encodings_

		// support flattened arguments
		if (encodings && !Array.isArray(encodings)) {
		encodings = new Array(arguments.length)
		for (var i = 0; i < encodings.length; i++) {
		encodings[i] = arguments[i]
		}
		}

		// no encodings, return all requested encodings
		if (!encodings \|\| encodings.length === 0) {
		return this.negotiator.encodings()
		}

		return this.negotiator.encodings(encodings)[0] \|\| false
		}

		/**
		* Return accepted charsets or best fit based on `charsets`.
		*
		* Given `Accept-Charset: utf-8, iso-8859-1;q=0.2, utf-7;q=0.5`
		* an array sorted by quality is returned:
		*
		* ['utf-8', 'utf-7', 'iso-8859-1']
		*
		* @param {String\|Array} charsets...
		* @return {String\|Array}
		* @public
		*/

		Accepts.prototype.charset =
		Accepts.prototype.charsets = function (charsets_) {
		var charsets = charsets_

		// support flattened arguments
		if (charsets && !Array.isArray(charsets)) {
		charsets = new Array(arguments.length)
		for (var i = 0; i < charsets.length; i++) {
		charsets[i] = arguments[i]
		}
		}

		// no charsets, return all requested charsets
		if (!charsets \|\| charsets.length === 0) {
		return this.negotiator.charsets()
		}

		return this.negotiator.charsets(charsets)[0] \|\| false
		}

		/**
		* Return accepted languages or best fit based on `langs`.
		*
		* Given `Accept-Language: en;q=0.8, es, pt`
		* an array sorted by quality is returned:
		*
		* ['es', 'pt', 'en']
		*
		* @param {String\|Array} langs...
		* @return {Array\|String}
		* @public
		*/

		Accepts.prototype.lang =
		Accepts.prototype.langs =
		Accepts.prototype.language =
		Accepts.prototype.languages = function (languages_) {
		var languages = languages_

		// support flattened arguments
		if (languages && !Array.isArray(languages)) {
		languages = new Array(arguments.length)
		for (var i = 0; i < languages.length; i++) {
		languages[i] = arguments[i]
		}
		}

		// no languages, return all requested languages
		if (!languages \|\| languages.length === 0) {
		return this.negotiator.languages()
		}

		return this.negotiator.languages(languages)[0] \|\| false
		}

		/**
		* Convert extnames to mime.
		*
		* @param {String} type
		* @return {String}
		* @private
		*/

		function extToMime (type) {
		return type.indexOf('/') === -1
		? mime.lookup(type)
		: type
		}

		/**
		* Check if mime is valid.
		*
		* @param {String} type
		* @return {String}
		* @private
		*/

		function validMime (type) {
		return typeof type === 'string'
		}

projet/node_modules/accepts/package.json

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		{
		"_args": [
		[
		"accepts@1.3.7",
		"/Users/klaus/Documents/Web/Back/2019_tp2/projet"
		]
		],
		"_from": "accepts@1.3.7",
		"_id": "accepts@1.3.7",
		"_inBundle": false,
		"_integrity": "sha512-Il80Qs2WjYlJIBNzNkK6KYqlVMTbZLXgHx2oT0pU/fjRHyEp+PEfEPY0R3WCwAGVOtauxh1hOxNgIf5bv7dQpA==",
		"_location": "/accepts",
		"_phantomChildren": {},
		"_requested": {
		"type": "version",
		"registry": true,
		"raw": "accepts@1.3.7",
		"name": "accepts",
		"escapedName": "accepts",
		"rawSpec": "1.3.7",
		"saveSpec": null,
		"fetchSpec": "1.3.7"
		},
		"_requiredBy": [
		"/express"
		],
		"_resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.7.tgz",
		"_spec": "1.3.7",
		"_where": "/Users/klaus/Documents/Web/Back/2019_tp2/projet",
		"bugs": {
		"url": "https://github.com/jshttp/accepts/issues"
		},
		"contributors": [
		{
		"name": "Douglas Christopher Wilson",
		"email": "doug@somethingdoug.com"
		},
		{
		"name": "Jonathan Ong",
		"email": "me@jongleberry.com",
		"url": "http://jongleberry.com"
		}
		],
		"dependencies": {
		"mime-types": "~2.1.24",
		"negotiator": "0.6.2"
		},
		"description": "Higher-level content negotiation",
		"devDependencies": {
		"deep-equal": "1.0.1",
		"eslint": "5.16.0",
		"eslint-config-standard": "12.0.0",
		"eslint-plugin-import": "2.17.2",
		"eslint-plugin-markdown": "1.0.0",
		"eslint-plugin-node": "8.0.1",
		"eslint-plugin-promise": "4.1.1",
		"eslint-plugin-standard": "4.0.0",
		"mocha": "6.1.4",
		"nyc": "14.0.0"
		},
		"engines": {
		"node": ">= 0.6"
		},
		"files": [
		"LICENSE",
		"HISTORY.md",
		"index.js"
		],
		"homepage": "https://github.com/jshttp/accepts#readme",
		"keywords": [
		"content",
		"negotiation",
		"accept",
		"accepts"
		],
		"license": "MIT",
		"name": "accepts",
		"repository": {
		"type": "git",
		"url": "git+https://github.com/jshttp/accepts.git"
		},
		"scripts": {
		"lint": "eslint --plugin markdown --ext js,md .",
		"test": "mocha --reporter spec --check-leaks --bail test/",
		"test-cov": "nyc --reporter=html --reporter=text npm test",
		"test-travis": "nyc --reporter=text npm test"
		},
		"version": "1.3.7"
		}

projet/node_modules/array-flatten/LICENSE

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		The MIT License (MIT)

		Copyright (c) 2014 Blake Embrey (hello@blakeembrey.com)

		Permission is hereby granted, free of charge, to any person obtaining a copy
		of this software and associated documentation files (the "Software"), to deal
		in the Software without restriction, including without limitation the rights
		to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
		copies of the Software, and to permit persons to whom the Software is
		furnished to do so, subject to the following conditions:

		The above copyright notice and this permission notice shall be included in
		all copies or substantial portions of the Software.

		THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
		IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
		FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
		AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
		LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
		OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
		THE SOFTWARE.

projet/node_modules/array-flatten/README.md

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		# Array Flatten

		[![NPM version][npm-image]][npm-url]
		[![NPM downloads][downloads-image]][downloads-url]
		[![Build status][travis-image]][travis-url]
		[![Test coverage][coveralls-image]][coveralls-url]

		> Flatten an array of nested arrays into a single flat array. Accepts an optional depth.

		## Installation

		```
		npm install array-flatten --save
		```

		## Usage

		```javascript
		var flatten = require('array-flatten')

		flatten([1, [2, [3, [4, [5], 6], 7], 8], 9])
		//=> [1, 2, 3, 4, 5, 6, 7, 8, 9]

		flatten([1, [2, [3, [4, [5], 6], 7], 8], 9], 2)
		//=> [1, 2, 3, [4, [5], 6], 7, 8, 9]

		(function () {
		flatten(arguments) //=> [1, 2, 3]
		})(1, [2, 3])
		```

		## License

		MIT

		[npm-image]: https://img.shields.io/npm/v/array-flatten.svg?style=flat
		[npm-url]: https://npmjs.org/package/array-flatten
		[downloads-image]: https://img.shields.io/npm/dm/array-flatten.svg?style=flat
		[downloads-url]: https://npmjs.org/package/array-flatten
		[travis-image]: https://img.shields.io/travis/blakeembrey/array-flatten.svg?style=flat
		[travis-url]: https://travis-ci.org/blakeembrey/array-flatten
		[coveralls-image]: https://img.shields.io/coveralls/blakeembrey/array-flatten.svg?style=flat
		[coveralls-url]: https://coveralls.io/r/blakeembrey/array-flatten?branch=master

projet/node_modules/array-flatten/array-flatten.js

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		'use strict'

		/**
		* Expose `arrayFlatten`.
		*/
		module.exports = arrayFlatten

		/**
		* Recursive flatten function with depth.
		*
		* @param {Array} array
		* @param {Array} result
		* @param {Number} depth
		* @return {Array}
		*/
		function flattenWithDepth (array, result, depth) {
		for (var i = 0; i < array.length; i++) {
		var value = array[i]

		if (depth > 0 && Array.isArray(value)) {
		flattenWithDepth(value, result, depth - 1)
		} else {
		result.push(value)
		}
		}

		return result
		}

		/**
		* Recursive flatten function. Omitting depth is slightly faster.
		*
		* @param {Array} array
		* @param {Array} result
		* @return {Array}
		*/
		function flattenForever (array, result) {
		for (var i = 0; i < array.length; i++) {
		var value = array[i]

		if (Array.isArray(value)) {
		flattenForever(value, result)
		} else {
		result.push(value)
		}
		}

		return result
		}

		/**
		* Flatten an array, with the ability to define a depth.
		*
		* @param {Array} array
		* @param {Number} depth
		* @return {Array}
		*/
		function arrayFlatten (array, depth) {
		if (depth == null) {
		return flattenForever(array, [])
		}

		return flattenWithDepth(array, [], depth)
		}

projet/node_modules/array-flatten/package.json

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		{
		"_args": [
		[
		"array-flatten@1.1.1",
		"/Users/klaus/Documents/Web/Back/2019_tp2/projet"
		]
		],
		"_from": "array-flatten@1.1.1",
		"_id": "array-flatten@1.1.1",
		"_inBundle": false,
		"_integrity": "sha1-ml9pkFGx5wczKPKgCJaLZOopVdI=",
		"_location": "/array-flatten",
		"_phantomChildren": {},
		"_requested": {
		"type": "version",
		"registry": true,
		"raw": "array-flatten@1.1.1",
		"name": "array-flatten",
		"escapedName": "array-flatten",
		"rawSpec": "1.1.1",
		"saveSpec": null,
		"fetchSpec": "1.1.1"
		},
		"_requiredBy": [
		"/express"
		],
		"_resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
		"_spec": "1.1.1",
		"_where": "/Users/klaus/Documents/Web/Back/2019_tp2/projet",
		"author": {
		"name": "Blake Embrey",
		"email": "hello@blakeembrey.com",
		"url": "http://blakeembrey.me"
		},
		"bugs": {
		"url": "https://github.com/blakeembrey/array-flatten/issues"
		},
		"description": "Flatten an array of nested arrays into a single flat array",
		"devDependencies": {
		"istanbul": "^0.3.13",
		"mocha": "^2.2.4",
		"pre-commit": "^1.0.7",
		"standard": "^3.7.3"
		},
		"files": [
		"array-flatten.js",
		"LICENSE"
		],
		"homepage": "https://github.com/blakeembrey/array-flatten",
		"keywords": [
		"array",
		"flatten",
		"arguments",
		"depth"
		],
		"license": "MIT",
		"main": "array-flatten.js",
		"name": "array-flatten",
		"repository": {
		"type": "git",
		"url": "git://github.com/blakeembrey/array-flatten.git"
		},
		"scripts": {
		"test": "istanbul cover _mocha -- -R spec"
		},
		"version": "1.1.1"
		}

projet/node_modules/bignumber.js/CHANGELOG.md

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		#### 7.2.1
		* 24/05/2018
		* Add `browser` field to package.json.

		#### 7.2.0
		* 22/05/2018
		* #166 Correct .mjs file. Remove extension from `main` field in package.json.

		#### 7.1.0
		* 18/05/2018
		* Add `module` field to package.json for bignumber.mjs.

		#### 7.0.2
		* 17/05/2018
		* #165 Bugfix: upper-case letters for bases 11-36 in a custom alphabet.
		* Add note to README regarding creating BigNumbers from Number values.

		#### 7.0.1
		* 26/04/2018
		* #158 Fix global object variable name typo.

		#### 7.0.0
		* 26/04/2018
		* #143 Remove global BigNumber from typings.
		* #144 Enable compatibility with `Object.freeze(Object.prototype)`.
		* #148 #123 #11 Only throw on a number primitive with more than 15 significant digits if `BigNumber.DEBUG` is `true`.
		* Only throw on an invalid BigNumber value if `BigNumber.DEBUG` is `true`. Return BigNumber `NaN` instead.
		* #154 `exponentiatedBy`: allow BigNumber exponent.
		* #156 Prevent Content Security Policy unsafe-eval issue.
		* `toFraction`: allow `Infinity` maximum denominator.
		* Comment-out some excess tests to reduce test time.
		* Amend indentation and other spacing.

		#### 6.0.0
		* 26/01/2018
		* #137 Implement `APLHABET` configuration option.
		* Remove `ERRORS` configuration option.
		* Remove `toDigits` method; extend `precision` method accordingly.
		* Remove s`round` method; extend `decimalPlaces` method accordingly.
		* Remove methods: `ceil`, `floor`, and `truncated`.
		* Remove method aliases: `add`, `cmp`, `isInt`, `isNeg`, `trunc`, `mul`, `neg` and `sub`.
		* Rename methods: `shift` to `shiftedBy`, `another` to `clone`, `toPower` to `exponentiatedBy`, and `equals` to `isEqualTo`.
		* Rename methods: add `is` prefix to `greaterThan`, `greaterThanOrEqualTo`, `lessThan` and `lessThanOrEqualTo`.
		* Add methods: `multipliedBy`, `isBigNumber`, `isPositive`, `integerValue`, `maximum` and `minimum`.
		* Refactor test suite.
		* Add CHANGELOG.md.
		* Rewrite bignumber.d.ts.
		* Redo API image.

		#### 5.0.0
		* 27/11/2017
		* #81 Don't throw on constructor call without `new`.

		#### 4.1.0
		* 26/09/2017
		* Remove node 0.6 from .travis.yml.
		* Add bignumber.mjs.

		#### 4.0.4
		* 03/09/2017
		* Add missing aliases to bignumber.d.ts.

		#### 4.0.3
		* 30/08/2017
		* Add types: bignumber.d.ts.

		#### 4.0.2
		* 03/05/2017
		* #120 Workaround Safari/Webkit bug.

		#### 4.0.1
		* 05/04/2017
		* #121 BigNumber.default to BigNumber['default'].

		#### 4.0.0
		* 09/01/2017
		* Replace BigNumber.isBigNumber method with isBigNumber prototype property.

		#### 3.1.2
		* 08/01/2017
		* Minor documentation edit.

		#### 3.1.1
		* 08/01/2017
		* Uncomment `isBigNumber` tests.
		* Ignore dot files.

		#### 3.1.0
		* 08/01/2017
		* Add `isBigNumber` method.

		#### 3.0.2
		* 08/01/2017
		* Bugfix: Possible incorrect value of `ERRORS` after a `BigNumber.another` call (due to `parseNumeric` declaration in outer scope).

		#### 3.0.1
		* 23/11/2016
		* Apply fix for old ipads with `%` issue, see #57 and #102.
		* Correct error message.

		#### 3.0.0
		* 09/11/2016
		* Remove `require('crypto')` - leave it to the user.
		* Add `BigNumber.set` as `BigNumber.config` alias.
		* Default `POW_PRECISION` to `0`.

		#### 2.4.0
		* 14/07/2016
		* #97 Add exports to support ES6 imports.

		#### 2.3.0
		* 07/03/2016
		* #86 Add modulus parameter to `toPower`.

		#### 2.2.0
		* 03/03/2016
		* #91 Permit larger JS integers.

		#### 2.1.4
		* 15/12/2015
		* Correct UMD.

		#### 2.1.3
		* 13/12/2015
		* Refactor re global object and crypto availability when bundling.

		#### 2.1.2
		* 10/12/2015
		* Bugfix: `window.crypto` not assigned to `crypto`.

		#### 2.1.1
		* 09/12/2015
		* Prevent code bundler from adding `crypto` shim.

		#### 2.1.0
		* 26/10/2015
		* For `valueOf` and `toJSON`, include the minus sign with negative zero.

		#### 2.0.8
		* 2/10/2015
		* Internal round function bugfix.

		#### 2.0.6
		* 31/03/2015
		* Add bower.json. Tweak division after in-depth review.

		#### 2.0.5
		* 25/03/2015
		* Amend README. Remove bitcoin address.

		#### 2.0.4
		* 25/03/2015
		* Critical bugfix #58: division.

		#### 2.0.3
		* 18/02/2015
		* Amend README. Add source map.

		#### 2.0.2
		* 18/02/2015
		* Correct links.

		#### 2.0.1
		* 18/02/2015
		* Add `max`, `min`, `precision`, `random`, `shiftedBy`, `toDigits` and `truncated` methods.
		* Add the short-forms: `add`, `mul`, `sd`, `sub` and `trunc`.
		* Add an `another` method to enable multiple independent constructors to be created.
		* Add support for the base 2, 8 and 16 prefixes `0b`, `0o` and `0x`.
		* Enable a rounding mode to be specified as a second parameter to `toExponential`, `toFixed`, `toFormat` and `toPrecision`.
		* Add a `CRYPTO` configuration property so cryptographically-secure pseudo-random number generation can be specified.
		* Add a `MODULO_MODE` configuration property to enable the rounding mode used by the `modulo` operation to be specified.
		* Add a `POW_PRECISION` configuration property to enable the number of significant digits calculated by the power operation to be limited.
		* Improve code quality.
		* Improve documentation.

		#### 2.0.0
		* 29/12/2014
		* Add `dividedToIntegerBy`, `isInteger` and `toFormat` methods.
		* Remove the following short-forms: `isF`, `isZ`, `toE`, `toF`, `toFr`, `toN`, `toP`, `toS`.
		* Store a BigNumber's coefficient in base 1e14, rather than base 10.
		* Add fast path for integers to BigNumber constructor.
		* Incorporate the library into the online documentation.

		#### 1.5.0
		* 13/11/2014
		* Add `toJSON` and `decimalPlaces` methods.

		#### 1.4.1
		* 08/06/2014
		* Amend README.

		#### 1.4.0
		* 08/05/2014
		* Add `toNumber`.

		#### 1.3.0
		* 08/11/2013
		* Ensure correct rounding of `sqrt` in all, rather than almost all, cases.
		* Maximum radix to 64.

		#### 1.2.1
		* 17/10/2013
		* Sign of zero when x < 0 and x + (-x) = 0.

		#### 1.2.0
		* 19/9/2013
		* Throw Error objects for stack.

		#### 1.1.1
		* 22/8/2013
		* Show original value in constructor error message.

		#### 1.1.0
		* 1/8/2013
		* Allow numbers with trailing radix point.

		#### 1.0.1
		* Bugfix: error messages with incorrect method name

		#### 1.0.0
		* 8/11/2012
		* Initial release

projet/node_modules/bignumber.js/LICENCE

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		The MIT Licence.

		Copyright (c) 2018 Michael Mclaughlin

		Permission is hereby granted, free of charge, to any person obtaining
		a copy of this software and associated documentation files (the
		'Software'), to deal in the Software without restriction, including
		without limitation the rights to use, copy, modify, merge, publish,
		distribute, sublicense, and/or sell copies of the Software, and to
		permit persons to whom the Software is furnished to do so, subject to
		the following conditions:

		The above copyright notice and this permission notice shall be
		included in all copies or substantial portions of the Software.

		THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
		EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
		MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
		IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
		CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
		TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
		SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

projet/node_modules/bignumber.js/README.md

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		![bignumber.js](https://raw.githubusercontent.com/MikeMcl/bignumber.js/gh-pages/bignumberjs.png)

		A JavaScript library for arbitrary-precision decimal and non-decimal arithmetic.

		[![Build Status](https://travis-ci.org/MikeMcl/bignumber.js.svg)](https://travis-ci.org/MikeMcl/bignumber.js)

		<br />

		## Features

		- Integers and decimals
		- Simple API but full-featured
		- Faster, smaller, and perhaps easier to use than JavaScript versions of Java's BigDecimal
		- 8 KB minified and gzipped
		- Replicates the `toExponential`, `toFixed`, `toPrecision` and `toString` methods of JavaScript's Number type
		- Includes a `toFraction` and a correctly-rounded `squareRoot` method
		- Supports cryptographically-secure pseudo-random number generation
		- No dependencies
		- Wide platform compatibility: uses JavaScript 1.5 (ECMAScript 3) features only
		- Comprehensive [documentation](http://mikemcl.github.io/bignumber.js/) and test set

		![API](https://raw.githubusercontent.com/MikeMcl/bignumber.js/gh-pages/API.png)

		If a smaller and simpler library is required see [big.js](https://github.com/MikeMcl/big.js/).
		It's less than half the size but only works with decimal numbers and only has half the methods.
		It also does not allow `NaN` or `Infinity`, or have the configuration options of this library.

		See also [decimal.js](https://github.com/MikeMcl/decimal.js/), which among other things adds support for non-integer powers, and performs all operations to a specified number of significant digits.

		## Load

		The library is the single JavaScript file bignumber.js (or minified, bignumber.min.js).

		Browser:

		```html
		<script src='path/to/bignumber.js'></script>
		```

		[Node.js](http://nodejs.org):

		```bash
		$ npm install --save bignumber.js
		```

		```javascript
		var BigNumber = require('bignumber.js');
		```

		ES6 module (bignumber.mjs):

		```javascript
		//import BigNumber from 'bignumber.js';
		import {BigNumber} from 'bignumber.js';
		```

		AMD loader libraries such as [requireJS](http://requirejs.org/):

		```javascript
		require(['bignumber'], function(BigNumber) {
		// Use BigNumber here in local scope. No global BigNumber.
		});
		```

		## Use

		*In all examples below, `var`, semicolons and `toString` calls are not shown.
		If a commented-out value is in quotes it means `toString` has been called on the preceding expression.*

		The library exports a single function: `BigNumber`, the constructor of BigNumber instances.

		It accepts a value of type Number, String or BigNumber,

		```javascript
		x = new BigNumber(123.4567)
		y = BigNumber('123456.7e-3')
		z = new BigNumber(x)
		x.isEqualTo(y) && y.isEqualTo(z) && x.isEqualTo(z) // true
		```

		and a base can be specified.

		```javascript
		a = new BigNumber(1011, 2) // "11"
		b = new BigNumber('zz.9', 36) // "1295.25"
		c = x.plus(y) // "1306.25"
		```

		Note that a BigNumber is created from a Number's decimal `toString()` value not from its underlying binary value. If the latter is required, then pass the Number's `toString(2)` value and specify base 2.

		```javascript
		new BigNumber(Number.MAX_VALUE.toString(2), 2)
		```

		If the limited precision of Number values is not well understood, it is recommended to pass String values rather than Number values to avoid a potential loss of precision.

		```javascript
		// Precision loss from using numeric literals with more than 15 significant digits.
		new BigNumber(1.0000000000000001); // '1'
		new BigNumber(88259496234518.57); // '88259496234518.56'
		new BigNumber(99999999999999999999); // '100000000000000000000'

		// Precision loss from using numeric literals outside the range of Number values.
		new BigNumber(2e+308); // 'Infinity'
		new BigNumber(1e-324); // '0'

		// Precision loss from the unexpected result of arithmetic with Number values.
		new BigNumber(0.7 + 0.1); // '0.7999999999999999'
		```

		A BigNumber is immutable in the sense that it is not changed by its methods.

		```javascript
		0.3 - 0.1 // 0.19999999999999998
		x = new BigNumber(0.3)
		x.minus(0.1) // "0.2"
		x // "0.3"
		```

		The methods that return a BigNumber can be chained.

		```javascript
		x.dividedBy(y).plus(z).times(9)
		x.times('1.23456780123456789e+9').plus(9876.5432321).dividedBy('4444562598.111772').integerValue()
		```

		Some of the longer method names have a shorter alias.

		```javascript
		x.squareRoot().dividedBy(y).exponentiatedBy(3).isEqualTo( x.sqrt().div(y).pow(3) ) // true
		x.modulo(y).multipliedBy(z).eq( x.mod(y).times(z) ) // true
		```

		As with JavaScript's Number type, there are `toExponential`, `toFixed` and `toPrecision` methods

		```javascript
		x = new BigNumber(255.5)
		x.toExponential(5) // "2.55500e+2"
		x.toFixed(5) // "255.50000"
		x.toPrecision(5) // "255.50"
		x.toNumber() // 255.5
		```

		and a base can be specified for `toString`.

		```javascript
		x.toString(16) // "ff.8"
		```

		There is also a `toFormat` method which may be useful for internationalisation

		```javascript
		y = new BigNumber('1234567.898765')
		y.toFormat(2) // "1,234,567.90"
		```

		The maximum number of decimal places of the result of an operation involving division (i.e. a division, square root, base conversion or negative power operation) is set using the `config` method of the `BigNumber` constructor.

		The other arithmetic operations always give the exact result.

		```javascript
		BigNumber.config({ DECIMAL_PLACES: 10, ROUNDING_MODE: 4 })

		x = new BigNumber(2);
		y = new BigNumber(3);
		z = x.dividedBy(y) // "0.6666666667"
		z.squareRoot() // "0.8164965809"
		z.exponentiatedBy(-3) // "3.3749999995"
		z.toString(2) // "0.1010101011"
		z.multipliedBy(z) // "0.44444444448888888889"
		z.multipliedBy(z).decimalPlaces(10) // "0.4444444445"
		```

		There is a `toFraction` method with an optional maximum denominator argument

		```javascript
		y = new BigNumber(355)
		pi = y.dividedBy(113) // "3.1415929204"
		pi.toFraction() // [ "7853982301", "2500000000" ]
		pi.toFraction(1000) // [ "355", "113" ]
		```

		and `isNaN` and `isFinite` methods, as `NaN` and `Infinity` are valid `BigNumber` values.

		```javascript
		x = new BigNumber(NaN) // "NaN"
		y = new BigNumber(Infinity) // "Infinity"
		x.isNaN() && !y.isNaN() && !x.isFinite() && !y.isFinite() // true
		```

		The value of a BigNumber is stored in a decimal floating point format in terms of a coefficient, exponent and sign.

		```javascript
		x = new BigNumber(-123.456);
		x.c // [ 123, 45600000000000 ] coefficient (i.e. significand)
		x.e // 2 exponent
		x.s // -1 sign
		```

		For advanced usage, multiple BigNumber constructors can be created, each with their own independent configuration which applies to all BigNumber's created from it.

		```javascript
		// Set DECIMAL_PLACES for the original BigNumber constructor
		BigNumber.config({ DECIMAL_PLACES: 10 })

		// Create another BigNumber constructor, optionally passing in a configuration object
		BN = BigNumber.clone({ DECIMAL_PLACES: 5 })

		x = new BigNumber(1)
		y = new BN(1)

		x.div(3) // '0.3333333333'
		y.div(3) // '0.33333'
		```

		For futher information see the [API](http://mikemcl.github.io/bignumber.js/) reference in the doc directory.

		## Test

		The test/modules directory contains the test scripts for each method.

		The tests can be run with Node.js or a browser. For Node.js use

		$ npm test

		or

		$ node test/test

		To test a single method, use, for example

		$ node test/methods/toFraction

		For the browser, open test/test.html.

		## Performance

		See the [README](https://github.com/MikeMcl/bignumber.js/tree/master/perf) in the perf directory.

		## Build

		For Node, if [uglify-js](https://github.com/mishoo/UglifyJS2) is installed

		npm install uglify-js -g

		then

		npm run build

		will create bignumber.min.js.

		A source map will also be created in the root directory.

		## Feedback

		Open an issue, or email

		Michael

		<a href="mailto:M8ch88l@gmail.com">M8ch88l@gmail.com</a>

		## Licence

		The MIT Licence.

		See [LICENCE](https://github.com/MikeMcl/bignumber.js/blob/master/LICENCE).

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projet/node_modules/bignumber.js/bignumber.js

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		(The MIT License)

		Copyright (c) 2014 Jonathan Ong <me@jongleberry.com>
		Copyright (c) 2014-2015 Douglas Christopher Wilson <doug@somethingdoug.com>

		Permission is hereby granted, free of charge, to any person obtaining
		a copy of this software and associated documentation files (the
		'Software'), to deal in the Software without restriction, including
		without limitation the rights to use, copy, modify, merge, publish,
		distribute, sublicense, and/or sell copies of the Software, and to
		permit persons to whom the Software is furnished to do so, subject to
		the following conditions:

		The above copyright notice and this permission notice shall be
		included in all copies or substantial portions of the Software.

		THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
		EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
		MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
		IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
		CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
		TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
		SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

projet/node_modules/body-parser/README.md

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		# body-parser

		[![NPM Version][npm-image]][npm-url]
		[![NPM Downloads][downloads-image]][downloads-url]
		[![Build Status][travis-image]][travis-url]
		[![Test Coverage][coveralls-image]][coveralls-url]

		Node.js body parsing middleware.

		Parse incoming request bodies in a middleware before your handlers, available
		under the `req.body` property.

		Note As `req.body`'s shape is based on user-controlled input, all
		properties and values in this object are untrusted and should be validated
		before trusting. For example, `req.body.foo.toString()` may fail in multiple
		ways, for example the `foo` property may not be there or may not be a string,
		and `toString` may not be a function and instead a string or other user input.

		[Learn about the anatomy of an HTTP transaction in Node.js](https://nodejs.org/en/docs/guides/anatomy-of-an-http-transaction/).

		_This does not handle multipart bodies_, due to their complex and typically
		large nature. For multipart bodies, you may be interested in the following
		modules:

		* [busboy](https://www.npmjs.org/package/busboy#readme) and
		[connect-busboy](https://www.npmjs.org/package/connect-busboy#readme)
		* [multiparty](https://www.npmjs.org/package/multiparty#readme) and
		[connect-multiparty](https://www.npmjs.org/package/connect-multiparty#readme)
		* [formidable](https://www.npmjs.org/package/formidable#readme)
		* [multer](https://www.npmjs.org/package/multer#readme)

		This module provides the following parsers:

		* [JSON body parser](#bodyparserjsonoptions)
		* [Raw body parser](#bodyparserrawoptions)
		* [Text body parser](#bodyparsertextoptions)
		* [URL-encoded form body parser](#bodyparserurlencodedoptions)

		Other body parsers you might be interested in:

		- [body](https://www.npmjs.org/package/body#readme)
		- [co-body](https://www.npmjs.org/package/co-body#readme)

		## Installation

		```sh
		$ npm install body-parser
		```

		## API

		<!-- eslint-disable no-unused-vars -->

		```js
		var bodyParser = require('body-parser')
		```

		The `bodyParser` object exposes various factories to create middlewares. All
		middlewares will populate the `req.body` property with the parsed body when
		the `Content-Type` request header matches the `type` option, or an empty
		object (`{}`) if there was no body to parse, the `Content-Type` was not matched,
		or an error occurred.

		The various errors returned by this module are described in the
		[errors section](#errors).

		### bodyParser.json([options])

		Returns middleware that only parses `json` and only looks at requests where
		the `Content-Type` header matches the `type` option. This parser accepts any
		Unicode encoding of the body and supports automatic inflation of `gzip` and
		`deflate` encodings.

		A new `body` object containing the parsed data is populated on the `request`
		object after the middleware (i.e. `req.body`).

		#### Options

		The `json` function takes an optional `options` object that may contain any of
		the following keys:

		##### inflate

		When set to `true`, then deflated (compressed) bodies will be inflated; when
		`false`, deflated bodies are rejected. Defaults to `true`.

		##### limit

		Controls the maximum request body size. If this is a number, then the value
		specifies the number of bytes; if it is a string, the value is passed to the
		[bytes](https://www.npmjs.com/package/bytes) library for parsing. Defaults
		to `'100kb'`.

		##### reviver

		The `reviver` option is passed directly to `JSON.parse` as the second
		argument. You can find more information on this argument
		[in the MDN documentation about JSON.parse](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/parse#Example.3A_Using_the_reviver_parameter).

		##### strict

		When set to `true`, will only accept arrays and objects; when `false` will
		accept anything `JSON.parse` accepts. Defaults to `true`.

		##### type

		The `type` option is used to determine what media type the middleware will
		parse. This option can be a string, array of strings, or a function. If not a
		function, `type` option is passed directly to the
		[type-is](https://www.npmjs.org/package/type-is#readme) library and this can
		be an extension name (like `json`), a mime type (like `application/json`), or
		a mime type with a wildcard (like `/` or `*/json`). If a function, the `type`
		option is called as `fn(req)` and the request is parsed if it returns a truthy
		value. Defaults to `application/json`.

		##### verify

		The `verify` option, if supplied, is called as `verify(req, res, buf, encoding)`,
		where `buf` is a `Buffer` of the raw request body and `encoding` is the
		encoding of the request. The parsing can be aborted by throwing an error.

		### bodyParser.raw([options])

		Returns middleware that parses all bodies as a `Buffer` and only looks at
		requests where the `Content-Type` header matches the `type` option. This
		parser supports automatic inflation of `gzip` and `deflate` encodings.

		A new `body` object containing the parsed data is populated on the `request`
		object after the middleware (i.e. `req.body`). This will be a `Buffer` object
		of the body.

		#### Options

		The `raw` function takes an optional `options` object that may contain any of
		the following keys:

		##### inflate

		When set to `true`, then deflated (compressed) bodies will be inflated; when
		`false`, deflated bodies are rejected. Defaults to `true`.

		##### limit

		Controls the maximum request body size. If this is a number, then the value
		specifies the number of bytes; if it is a string, the value is passed to the
		[bytes](https://www.npmjs.com/package/bytes) library for parsing. Defaults
		to `'100kb'`.

		##### type

		The `type` option is used to determine what media type the middleware will
		parse. This option can be a string, array of strings, or a function.
		If not a function, `type` option is passed directly to the
		[type-is](https://www.npmjs.org/package/type-is#readme) library and this
		can be an extension name (like `bin`), a mime type (like
		`application/octet-stream`), or a mime type with a wildcard (like `/` or
		`application/*`). If a function, the `type` option is called as `fn(req)`
		and the request is parsed if it returns a truthy value. Defaults to
		`application/octet-stream`.

		##### verify

		The `verify` option, if supplied, is called as `verify(req, res, buf, encoding)`,
		where `buf` is a `Buffer` of the raw request body and `encoding` is the
		encoding of the request. The parsing can be aborted by throwing an error.

		### bodyParser.text([options])

		Returns middleware that parses all bodies as a string and only looks at
		requests where the `Content-Type` header matches the `type` option. This
		parser supports automatic inflation of `gzip` and `deflate` encodings.

		A new `body` string containing the parsed data is populated on the `request`
		object after the middleware (i.e. `req.body`). This will be a string of the
		body.

		#### Options

		The `text` function takes an optional `options` object that may contain any of
		the following keys:

		##### defaultCharset

		Specify the default character set for the text content if the charset is not
		specified in the `Content-Type` header of the request. Defaults to `utf-8`.

		##### inflate

		When set to `true`, then deflated (compressed) bodies will be inflated; when
		`false`, deflated bodies are rejected. Defaults to `true`.

		##### limit

		Controls the maximum request body size. If this is a number, then the value
		specifies the number of bytes; if it is a string, the value is passed to the
		[bytes](https://www.npmjs.com/package/bytes) library for parsing. Defaults
		to `'100kb'`.

		##### type

		The `type` option is used to determine what media type the middleware will
		parse. This option can be a string, array of strings, or a function. If not
		a function, `type` option is passed directly to the
		[type-is](https://www.npmjs.org/package/type-is#readme) library and this can
		be an extension name (like `txt`), a mime type (like `text/plain`), or a mime
		type with a wildcard (like `/` or `text/*`). If a function, the `type`
		option is called as `fn(req)` and the request is parsed if it returns a
		truthy value. Defaults to `text/plain`.

		##### verify

		The `verify` option, if supplied, is called as `verify(req, res, buf, encoding)`,
		where `buf` is a `Buffer` of the raw request body and `encoding` is the
		encoding of the request. The parsing can be aborted by throwing an error.

		### bodyParser.urlencoded([options])

		Returns middleware that only parses `urlencoded` bodies and only looks at
		requests where the `Content-Type` header matches the `type` option. This
		parser accepts only UTF-8 encoding of the body and supports automatic
		inflation of `gzip` and `deflate` encodings.

		A new `body` object containing the parsed data is populated on the `request`
		object after the middleware (i.e. `req.body`). This object will contain
		key-value pairs, where the value can be a string or array (when `extended` is
		`false`), or any type (when `extended` is `true`).

		#### Options

		The `urlencoded` function takes an optional `options` object that may contain
		any of the following keys:

		##### extended

		The `extended` option allows to choose between parsing the URL-encoded data
		with the `querystring` library (when `false`) or the `qs` library (when
		`true`). The "extended" syntax allows for rich objects and arrays to be
		encoded into the URL-encoded format, allowing for a JSON-like experience
		with URL-encoded. For more information, please
		[see the qs library](https://www.npmjs.org/package/qs#readme).

		Defaults to `true`, but using the default has been deprecated. Please
		research into the difference between `qs` and `querystring` and choose the
		appropriate setting.

		##### inflate

		When set to `true`, then deflated (compressed) bodies will be inflated; when
		`false`, deflated bodies are rejected. Defaults to `true`.

		##### limit

		Controls the maximum request body size. If this is a number, then the value
		specifies the number of bytes; if it is a string, the value is passed to the
		[bytes](https://www.npmjs.com/package/bytes) library for parsing. Defaults
		to `'100kb'`.

		##### parameterLimit

		The `parameterLimit` option controls the maximum number of parameters that
		are allowed in the URL-encoded data. If a request contains more parameters
		than this value, a 413 will be returned to the client. Defaults to `1000`.

		##### type

		The `type` option is used to determine what media type the middleware will
		parse. This option can be a string, array of strings, or a function. If not
		a function, `type` option is passed directly to the
		[type-is](https://www.npmjs.org/package/type-is#readme) library and this can
		be an extension name (like `urlencoded`), a mime type (like
		`application/x-www-form-urlencoded`), or a mime type with a wildcard (like
		`*/x-www-form-urlencoded`). If a function, the `type` option is called as
		`fn(req)` and the request is parsed if it returns a truthy value. Defaults
		to `application/x-www-form-urlencoded`.

		##### verify

		The `verify` option, if supplied, is called as `verify(req, res, buf, encoding)`,
		where `buf` is a `Buffer` of the raw request body and `encoding` is the
		encoding of the request. The parsing can be aborted by throwing an error.

		## Errors

		The middlewares provided by this module create errors depending on the error
		condition during parsing. The errors will typically have a `status`/`statusCode`
		property that contains the suggested HTTP response code, an `expose` property
		to determine if the `message` property should be displayed to the client, a
		`type` property to determine the type of error without matching against the
		`message`, and a `body` property containing the read body, if available.

		The following are the common errors emitted, though any error can come through
		for various reasons.

		### content encoding unsupported

		This error will occur when the request had a `Content-Encoding` header that
		contained an encoding but the "inflation" option was set to `false`. The
		`status` property is set to `415`, the `type` property is set to
		`'encoding.unsupported'`, and the `charset` property will be set to the
		encoding that is unsupported.

		### request aborted

		This error will occur when the request is aborted by the client before reading
		the body has finished. The `received` property will be set to the number of
		bytes received before the request was aborted and the `expected` property is
		set to the number of expected bytes. The `status` property is set to `400`
		and `type` property is set to `'request.aborted'`.

		### request entity too large

		This error will occur when the request body's size is larger than the "limit"
		option. The `limit` property will be set to the byte limit and the `length`
		property will be set to the request body's length. The `status` property is
		set to `413` and the `type` property is set to `'entity.too.large'`.

		### request size did not match content length

		This error will occur when the request's length did not match the length from
		the `Content-Length` header. This typically occurs when the request is malformed,
		typically when the `Content-Length` header was calculated based on characters
		instead of bytes. The `status` property is set to `400` and the `type` property
		is set to `'request.size.invalid'`.

		### stream encoding should not be set

		This error will occur when something called the `req.setEncoding` method prior
		to this middleware. This module operates directly on bytes only and you cannot
		call `req.setEncoding` when using this module. The `status` property is set to
		`500` and the `type` property is set to `'stream.encoding.set'`.

		### too many parameters

		This error will occur when the content of the request exceeds the configured
		`parameterLimit` for the `urlencoded` parser. The `status` property is set to
		`413` and the `type` property is set to `'parameters.too.many'`.

		### unsupported charset "BOGUS"

		This error will occur when the request had a charset parameter in the
		`Content-Type` header, but the `iconv-lite` module does not support it OR the
		parser does not support it. The charset is contained in the message as well
		as in the `charset` property. The `status` property is set to `415`, the
		`type` property is set to `'charset.unsupported'`, and the `charset` property
		is set to the charset that is unsupported.

		### unsupported content encoding "bogus"

		This error will occur when the request had a `Content-Encoding` header that
		contained an unsupported encoding. The encoding is contained in the message
		as well as in the `encoding` property. The `status` property is set to `415`,
		the `type` property is set to `'encoding.unsupported'`, and the `encoding`
		property is set to the encoding that is unsupported.

		## Examples

		### Express/Connect top-level generic

		This example demonstrates adding a generic JSON and URL-encoded parser as a
		top-level middleware, which will parse the bodies of all incoming requests.
		This is the simplest setup.

		```js
		var express = require('express')
		var bodyParser = require('body-parser')

		var app = express()

		// parse application/x-www-form-urlencoded
		app.use(bodyParser.urlencoded({ extended: false }))

		// parse application/json
		app.use(bodyParser.json())

		app.use(function (req, res) {
		res.setHeader('Content-Type', 'text/plain')
		res.write('you posted:\n')
		res.end(JSON.stringify(req.body, null, 2))
		})
		```

		### Express route-specific

		This example demonstrates adding body parsers specifically to the routes that
		need them. In general, this is the most recommended way to use body-parser with
		Express.

		```js
		var express = require('express')
		var bodyParser = require('body-parser')

		var app = express()

		// create application/json parser
		var jsonParser = bodyParser.json()

		// create application/x-www-form-urlencoded parser
		var urlencodedParser = bodyParser.urlencoded({ extended: false })

		// POST /login gets urlencoded bodies
		app.post('/login', urlencodedParser, function (req, res) {
		res.send('welcome, ' + req.body.username)
		})

		// POST /api/users gets JSON bodies
		app.post('/api/users', jsonParser, function (req, res) {
		// create user in req.body
		})
		```

		### Change accepted type for parsers

		All the parsers accept a `type` option which allows you to change the
		`Content-Type` that the middleware will parse.

		```js
		var express = require('express')
		var bodyParser = require('body-parser')

		var app = express()

		// parse various different custom JSON types as JSON
		app.use(bodyParser.json({ type: 'application/*+json' }))

		// parse some custom thing into a Buffer
		app.use(bodyParser.raw({ type: 'application/vnd.custom-type' }))

		// parse an HTML body into a string
		app.use(bodyParser.text({ type: 'text/html' }))
		```

		## License

		[MIT](LICENSE)

		[npm-image]: https://img.shields.io/npm/v/body-parser.svg
		[npm-url]: https://npmjs.org/package/body-parser
		[travis-image]: https://img.shields.io/travis/expressjs/body-parser/master.svg
		[travis-url]: https://travis-ci.org/expressjs/body-parser
		[coveralls-image]: https://img.shields.io/coveralls/expressjs/body-parser/master.svg
		[coveralls-url]: https://coveralls.io/r/expressjs/body-parser?branch=master
		[downloads-image]: https://img.shields.io/npm/dm/body-parser.svg
		[downloads-url]: https://npmjs.org/package/body-parser

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		(The MIT License)

		Copyright (c) 2012-2014 TJ Holowaychuk <tj@vision-media.ca>
		Copyright (c) 2015 Jed Watson <jed.watson@me.com>

		Permission is hereby granted, free of charge, to any person obtaining
		a copy of this software and associated documentation files (the
		'Software'), to deal in the Software without restriction, including
		without limitation the rights to use, copy, modify, merge, publish,
		distribute, sublicense, and/or sell copies of the Software, and to
		permit persons to whom the Software is furnished to do so, subject to
		the following conditions:

		The above copyright notice and this permission notice shall be
		included in all copies or substantial portions of the Software.

		THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
		EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
		MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
		IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
		CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
		TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
		SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.