fin de arbre suite
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import java.util.HashMap;
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import java.util.Scanner;
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public class Authentification {
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// Dictionnaire pour stocker les identifiants et mots de passe
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private HashMap<String, String> users;
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public Authentification() {
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users = new HashMap<>();
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}
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// Ajout d'un utilisateur
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public void addUser(String username, String password) {
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if (users.containsKey(username)) {
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System.out.println("Utilisateur \"" + username + "\" existe déjà.");
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} else {
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users.put(username, password);
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System.out.println("Utilisateur \"" + username + "\" ajouté");
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}
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}
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// Suppression d'un utilisateur
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public void removeUser(String username) {
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if (users.remove(username) != null) {
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System.out.println("Utilisateur \"" + username + "\" retiré");
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} else {
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System.out.println("Utilisateur \"" + username + "\" non trouvé.");
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}
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}
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// Authentification d'un utilisateur
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public void authenticate(String username, String password) {
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if (users.containsKey(username) && users.get(username).equals(password)) {
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System.out.println("Utilisateur \"" + username + "\" reconnu");
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} else {
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System.out.println("Utilisateur \"" + username + "\" non reconnu");
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}
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}
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// Main pour interagir avec le programme
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public static void main(String[] args) {
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Authentification auth = new Authentification();
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Scanner scanner = new Scanner(System.in);
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while (true) {
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System.out.print("> ");
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String command = scanner.nextLine();
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String[] parts = command.split(" ");
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if (parts.length == 0) continue;
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switch (parts[0].toLowerCase()) {
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case "add":
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if (parts.length == 3) {
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auth.addUser(parts[1], parts[2]);
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} else {
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System.out.println("Usage : add <username> <password>");
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}
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break;
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case "del":
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if (parts.length == 2) {
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auth.removeUser(parts[1]);
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} else {
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System.out.println("Usage : del <username>");
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}
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break;
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case "auth":
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if (parts.length == 3) {
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auth.authenticate(parts[1], parts[2]);
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} else {
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System.out.println("Usage : auth <username> <password>");
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}
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break;
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case "quit":
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System.out.println("Au revoir");
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scanner.close();
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return;
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default:
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System.out.println("Commande non reconnue.");
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}
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}
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}
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}
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