mock authentification added

Author: TarasMykytiuk

middleware-exercises/exercise-1/Readme.md

@@ -0,0 +1,7 @@
+simple authentication added, X-Password now combined to registered usernames:
+const registeredUsers = {
+    "Ahmed": "ahmed-pass",
+    "Emma": "emma-pass"
+}
+Example of request:
+curl -X POST --data '["Bees"]' -H "X-Username: Ahmed" -H "X-Password: ahmed-pass" http://localhost:3000

middleware-exercises/exercise-1/server.js

@@ -5,9 +5,19 @@ const port = process.env.PORT || 3000;
 const app = express();
 app.use(cors());
 
+const registeredUsers = {
+    "Ahmed": "ahmed-pass",
+    "Emma": "emma-pass"
+}
+
 function usernameMiddleware(req, res, next) {
-    const username = req.get("X-Username");
-    req.username = username ? username : null;
+    const username = req.get("X-Username")? req.get("X-Username") : null;
+    const password = req.get("X-Password");
+    if (Object.keys(registeredUsers).includes(username) && password !== registeredUsers[username]){
+        return res.status(400).send("Wrong credentials!");
+    } else {
+        req.username = username;
+    }
     next();
 }
 
@@ -44,7 +54,13 @@ function jsonBodyMiddleware(req, res, next) {
 
 app.post("/", usernameMiddleware, jsonBodyMiddleware, (req, res) => {
     const { username, body } = req;
-    let nameAnswer = "You are authenticated as " + username + ".";
+    let nameAnswer = ''
+    if (username !== null){
+        nameAnswer = "You are authenticated as " + username + ".";
+    } else {
+        nameAnswer = "You are not authenticated";
+    }
+    
     let answerStr = "You have requested information about " + body.length + " subjects: ";
     for (let i = 0; i < body.length; i++) {
         answerStr += body[i]

middleware-exercises/exercise-2/README.md

@@ -3,5 +3,11 @@ In order to tell server to parse data as Json we have to add header to curl requ
 "Content-Type: application/json" 
 Correct command for this case is:
 
-curl -X POST --data '["Bees"]' -H "Content-Type: application/json" -H "X-Username: Ahmed" http://localhost:3000
+curl -X POST --data '["Bees"]' -H "Content-Type: application/json" -H "X-Username: Ahmed" -H "X-Password: ahmed-pass" http://localhost:3000
+
+simple authentication added, X-Password now combined to registered usernames:
+const registeredUsers = {
+    "Ahmed": "ahmed-pass",
+    "Emma": "emma-pass"
+}
 

middleware-exercises/exercise-2/server.js

@@ -6,15 +6,30 @@ const app = express();
 app.use(cors());
 app.use(express.json());
 
+const registeredUsers = {
+    "Ahmed": "ahmed-pass",
+    "Emma": "emma-pass"
+}
+
 function usernameMiddleware(req, res, next) {
-    const username = req.get("X-Username");
-    req.username = username ? username : null;
+    const username = req.get("X-Username")? req.get("X-Username") : null;
+    const password = req.get("X-Password");
+    if (Object.keys(registeredUsers).includes(username) && password !== registeredUsers[username]){
+        return res.status(400).send("Wrong credentials!");
+    } else {
+        req.username = username;
+    }
     next();
 }
 
 app.post("/", usernameMiddleware, (req, res) => {
     const { username, body } = req;
-    let nameAnswer = "You are authenticated as " + username + ".";
+    let nameAnswer = ''
+    if (username){
+        nameAnswer = "You are authenticated as " + username + ".";
+    } else {
+        nameAnswer = "You are not authenticated";
+    }
     let answerStr = "You have requested information about " + body.length + " subjects: ";
     for (let i = 0; i < body.length; i++) {
         answerStr += body[i]