Add permissions

server/config/roles.json

@@ -0,0 +1,27 @@
+{
+  "roles": [
+    {
+      "name": "admin",
+      "permissions": [
+        "crud_quiz",
+        "crud_folders",
+        "crud_images",
+        "crud_user"
+      ]
+    },
+    {
+      "name": "teacher",
+      "permissions": [
+        "crud_quiz",
+        "crud_folders",
+        "crud_images"
+      ]
+    },
+    {
+      "name": "student",
+      "permissions": [
+        "participate_quiz"
+      ]
+    }
+  ]
+}

server/constants/errorCodes.js

@@ -7,6 +7,11 @@ exports.UNAUTHORIZED_INVALID_TOKEN = {
     code: 401
 }
 
+exports.UNAUTHORIZED_PERMISSION_MISSING = {
+    message: 'Accès refusé. Vous n\'avez pas les permissions nécessaires.',
+    code: 403
+}
+
 exports.MISSING_REQUIRED_PARAMETER = {
     message: 'Paramètre requis manquant.',
     code: 400

server/controllers/users.js

@@ -9,13 +9,13 @@ class UsersController {
 
     async register(req, res, next) {
         try {
-            const { email, password } = req.body;
+            const { email, password, role } = req.body;
 
             if (!email || !password) {
                 throw new AppError(MISSING_REQUIRED_PARAMETER);
             }
 
-            await model.register(email, password);
+            await model.register(email, password, role);
 
             emailer.registerConfirmation(email)
 
@@ -43,11 +43,12 @@ class UsersController {
                 throw new AppError(LOGIN_CREDENTIALS_ERROR);
             }
 
-            const token = jwt.create(user.email, user._id);
+            const token = jwt.create(user.email, user._id, user.role);
 
             return res.status(200).json({
                 token: token,
-                id: user.email
+                id: user.email,
+                role: user.role
             });
 
         }

server/middleware/jwtToken.js

@@ -7,8 +7,8 @@ dotenv.config();
 
 class Token {
 
-    create(email, userId) {
-        return jwt.sign({ email, userId }, process.env.JWT_SECRET);
+    create(email, userId, role) {
+        return jwt.sign({ email, userId, role }, process.env.JWT_SECRET);
     }
 
     authenticate(req, res, next) {

server/middleware/rbac.js

@@ -0,0 +1,23 @@
+const Permissions = require('../models/permissions');
+const AppError = require("./AppError");
+const { UNAUTHORIZED_PERMISSION_MISSING} = require("../constants/errorCodes");
+const jwt = require("jsonwebtoken");
+
+class Rbac {
+    checkPermission = (...permissions) => {
+        return (req, res, next) => {
+            const userRole = req.user ? req.user.role : 'anonymous';
+            const userPermissions = Permissions.getPermissionsByRoleName(userRole);
+
+            for (let permission of permissions) {
+                if (!userPermissions.includes(permission)) {
+                    return next(new AppError(UNAUTHORIZED_PERMISSION_MISSING));
+                }
+            }
+
+            return next();
+        };
+    };
+}
+
+module.exports = new Rbac;

server/models/permissions.js

@@ -0,0 +1,13 @@
+const Role = require('../models/role');
+
+class Permissions {
+    constructor() {
+        this.permissions = [];
+    }
+
+    getPermissionsByRoleName(roleName) {
+        const role = Role.getRoleByName(roleName);
+        return role ? role.permissions : [];
+    }
+}
+module.exports = new Permissions;

server/models/role.js

@@ -0,0 +1,30 @@
+const roles = require('../config/roles.json');
+
+class Role {
+    constructor() {
+        this.roles = roles.roles;
+    }
+
+    getRoleByName(name) {
+        return this.convertCrud(this.roles.find((role) => role.name === name));
+    }
+
+    getRoles() {
+        return this.roles;
+    }
+
+    convertCrud(role) {
+        for (let permission of role.permissions) {
+            if (permission.startsWith("crud")) {
+                let resourceName = permission.split("_");
+                role.permissions.push("create_" + resourceName[1]);
+                role.permissions.push("read_" + resourceName[1]);
+                role.permissions.push("update_" + resourceName[1]);
+                role.permissions.push("delete_" + resourceName[1]);
+            }
+        }
+        return role;
+    }
+}
+
+module.exports = new Role;

server/models/users.js

@@ -19,7 +19,7 @@ class Users {
         return await bcrypt.compare(password, hash)
     }
 
-    async register(email, password) {
+    async register(email, password, role) {
         await db.connect()
         const conn = db.getConnection();
         
@@ -34,6 +34,7 @@ class Users {
         const newUser = {
             email: email,
             password: await this.hashPassword(password),
+            role: role,
             created_at: new Date()
         };
 

server/routers/folders.js

@@ -3,16 +3,16 @@ const router = express.Router();
 const jwt = require('../middleware/jwtToken.js');
 
 const foldersController = require('../controllers/folders.js')
+const rbac = require("../middleware/rbac");
 
-router.post("/create", jwt.authenticate, foldersController.create);
-router.get("/getUserFolders", jwt.authenticate, foldersController.getUserFolders);
-router.get("/getFolderContent/:folderId", jwt.authenticate, foldersController.getFolderContent);
-router.delete("/delete/:folderId", jwt.authenticate, foldersController.delete);
-router.put("/rename", jwt.authenticate, foldersController.rename);
+router.post("/create", jwt.authenticate, rbac.checkPermission('create_folders'), foldersController.create);
+router.get("/getUserFolders", jwt.authenticate, rbac.checkPermission('read_folders'), foldersController.getUserFolders);
+router.get("/getFolderContent/:folderId", jwt.authenticate, rbac.checkPermission('read_folders'), foldersController.getFolderContent);
+router.delete("/delete/:folderId", jwt.authenticate, rbac.checkPermission('delete_folders'), foldersController.delete);
+router.put("/rename", jwt.authenticate, rbac.checkPermission('update_folders'), foldersController.rename);
 
-//router.post("/duplicate", jwt.authenticate, foldersController.duplicate);
-router.post("/duplicate", jwt.authenticate, foldersController.duplicate);
+router.post("/duplicate", jwt.authenticate, rbac.checkPermission('create_folders', 'read_folders'), foldersController.duplicate);
 
-router.post("/copy/:folderId", jwt.authenticate, foldersController.copy);
+router.post("/copy/:folderId", jwt.authenticate, rbac.checkPermission('create_folders', 'read_folders'), foldersController.copy);
 
 module.exports = router;

server/routers/images.js

@@ -6,10 +6,11 @@ const imagesController = require('../controllers/images.js')
 
 // For getting the image out of the form data
 const multer = require('multer');
+const rbac = require("../middleware/rbac");
 const storage = multer.memoryStorage();
 const upload = multer({ storage: storage });
 
-router.post("/upload", jwt.authenticate, upload.single('image'), imagesController.upload);
+router.post("/upload", jwt.authenticate, rbac.checkPermission('create_images'), upload.single('image'), imagesController.upload);
 router.get("/get/:id", imagesController.get);
 
 module.exports = router;

server/routers/quiz.js

@@ -3,17 +3,18 @@ const router = express.Router();
 
 const jwt = require('../middleware/jwtToken.js');
 const quizController = require('../controllers/quiz.js')
+const rbac = require('../middleware/rbac.js');
 
-router.post("/create", jwt.authenticate, quizController.create);
-router.get("/get/:quizId", jwt.authenticate, quizController.get);
-router.delete("/delete/:quizId", jwt.authenticate, quizController.delete);
-router.put("/update", jwt.authenticate, quizController.update);
-router.put("/move", jwt.authenticate, quizController.move);
+router.post("/create", jwt.authenticate, rbac.checkPermission('create_quiz'), quizController.create);
+router.get("/get/:quizId", jwt.authenticate, rbac.checkPermission('participate_quiz'), quizController.get);
+router.delete("/delete/:quizId", jwt.authenticate, rbac.checkPermission('delete_quiz'), quizController.delete);
+router.put("/update", jwt.authenticate, rbac.checkPermission('update_quiz'), quizController.update);
+router.put("/move", jwt.authenticate, rbac.checkPermission('update_quiz'), quizController.move);
 
-router.post("/duplicate", jwt.authenticate, quizController.duplicate);
-router.post("/copy/:quizId", jwt.authenticate, quizController.copy);
-router.put("/Share", jwt.authenticate, quizController.Share);
-router.get("/getShare/:quizId", jwt.authenticate, quizController.getShare);
-router.post("/receiveShare", jwt.authenticate, quizController.receiveShare);
+router.post("/duplicate", jwt.authenticate, rbac.checkPermission('create_quiz', 'read_quiz'), quizController.duplicate);
+router.post("/copy/:quizId", jwt.authenticate, rbac.checkPermission('create_quiz', 'read_quiz'), quizController.copy);
+router.put("/Share", jwt.authenticate, rbac.checkPermission('create_quiz', 'read_quiz'), quizController.Share);
+router.get("/getShare/:quizId", jwt.authenticate, rbac.checkPermission('create_quiz', 'read_quiz'), quizController.getShare);
+router.post("/receiveShare", jwt.authenticate, rbac.checkPermission('create_quiz', 'read_quiz'), quizController.receiveShare);
 
 module.exports = router;

server/routers/users.js

@@ -3,11 +3,12 @@ const router = express.Router();
 
 const jwt = require('../middleware/jwtToken.js');
 const usersController = require('../controllers/users.js')
+const rbac = require("../middleware/rbac");
 
 router.post("/register", usersController.register);
 router.post("/login", usersController.login);
 router.post("/reset-password", usersController.resetPassword);
 router.post("/change-password", jwt.authenticate, usersController.changePassword);
-router.post("/delete-user", jwt.authenticate, usersController.delete);
+router.post("/delete-user", jwt.authenticate, rbac.checkPermission('delete_user'), usersController.delete);
 
 module.exports = router;

server/socket/socket.js

@@ -5,6 +5,7 @@ const setupWebsocket = (io) => {
   let totalConnections = 0;
 
   io.on("connection", (socket) => {
+    // Get jwt and roles
     if (totalConnections >= MAX_TOTAL_CONNECTIONS) {
       console.log("Connection limit reached. Disconnecting client.");
       socket.emit(
@@ -24,6 +25,10 @@ const setupWebsocket = (io) => {
     );
 
     socket.on("create-room", (sentRoomName) => {
+      // If roles authorize else send error message
+      // else {
+      //   socket.emit('access_denied', 'You do not have permission to perform this action');
+      // }
       if (sentRoomName) {
         const roomName = sentRoomName.toUpperCase();
         if (!io.sockets.adapter.rooms.get(roomName)) {