Backend #18
Backend #18
Conversation
WalkthroughThis pull request introduces a new backend implementation using Express and Mongoose. It sets up a basic server with middleware for CORS and JSON parsing, establishes routes for user authentication and scanning operations, and connects to a MongoDB database. New authentication middleware verifies JWT tokens, while dedicated Mongoose models for Scan and User are added. The scan endpoint includes time window checks and duplicate scan prevention. Additionally, the README is updated with the team name "NOX" and revised team member details. Changes
Sequence Diagram(s)sequenceDiagram
participant U as User
participant S as Express Server
participant A as Auth Middleware
participant DB as MongoDB (Scan Model)
U->>S: POST /scan (with token & scan type)
S->>A: Validate JWT token
A-->>S: Token valid, set req.userId
S->>S: Check scan time for type (lunch/snack)
S->>DB: Query for existing scan (user, type, date)
DB-->>S: Scan exists? (yes/no)
alt No existing scan and valid time
S->>DB: Create new scan record
DB-->>S: Scan recorded confirmation
S->>U: 200 OK - Scan recorded
else Existing scan or invalid time
S->>U: 400 Error - Scan not allowed
end
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Actionable comments posted: 17
🧹 Nitpick comments (1)
Backend/Server.js (1)
25-28: Add graceful shutdown handling.Implement proper server shutdown handling for SIGTERM and SIGINT signals.
const PORT= 5000; -app.listen(PORT, () => { +const server = app.listen(PORT, () => { console.log(`Server running on http://localhost:${PORT}`); -}) +}); + +process.on('SIGTERM', gracefulShutdown); +process.on('SIGINT', gracefulShutdown); + +async function gracefulShutdown() { + console.log('Received shutdown signal'); + try { + await mongoose.connection.close(); + await server.close(); + console.log('Server shut down gracefully'); + process.exit(0); + } catch (err) { + console.error('Error during shutdown:', err); + process.exit(1); + } +}
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Review profile: CHILL
Plan: Pro
📒 Files selected for processing (7)
Backend/Server.js(1 hunks)Backend/middleware/auth.js(1 hunks)Backend/models/Scan.js(1 hunks)Backend/models/User.js(1 hunks)Backend/routes/auth.js(1 hunks)Backend/routes/scan.js(1 hunks)README.md(1 hunks)
✅ Files skipped from review due to trivial changes (1)
- README.md
🧰 Additional context used
🪛 Biome (1.9.4)
Backend/routes/auth.js
[error] 10-10: This variable is used before its declaration.
The variable is declared here:
(lint/correctness/noInvalidUseBeforeDeclaration)
Backend/Server.js
[error] 4-4: Shouldn't redeclare 'mongoose'. Consider to delete it or rename it.
'mongoose' is defined here:
(lint/suspicious/noRedeclare)
Backend/routes/scan.js
[error] 24-24: This variable is used before its declaration.
The variable is declared here:
(lint/correctness/noInvalidUseBeforeDeclaration)
Backend/models/Scan.js
Outdated
| @@ -0,0 +1,7 @@ | |||
| const mongoose= require('mongoose'); | |||
| const scanSchema =new mongoose.Schema({ //Scan date update in db | |||
| userId: { type: String, enum: ['lunch', 'snck'], required: true }, | |||
There was a problem hiding this comment.
🛠️ Refactor suggestion
Rename userId field to better reflect its purpose.
The field name userId is misleading as it stores the scan type ('lunch' or 'snck'). Consider renaming it to scanType for better clarity. Also, 'snck' appears to be a typo of 'snack'.
- userId: { type: String, enum: ['lunch', 'snck'], required: true },
+ scanType: { type: String, enum: ['lunch', 'snack'], required: true },| const mongoose= require('mongoose'); | ||
| const scanSchema =new mongoose.Schema({ //Scan date update in db | ||
| userId: { type: String, enum: ['lunch', 'snck'], required: true }, | ||
| date :{ type: Date, default: Date.now}, | ||
| }); |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Add missing fields and optimize schema for queries.
The schema is missing:
- Reference to the actual user performing the scan
- Index on the date field for efficient queries
const mongoose= require('mongoose');
const scanSchema =new mongoose.Schema({
- userId: { type: String, enum: ['lunch', 'snck'], required: true },
- date :{ type: Date, default: Date.now},
+ scanType: { type: String, enum: ['lunch', 'snack'], required: true },
+ userId: { type: mongoose.Schema.Types.ObjectId, ref: 'User', required: true },
+ date: { type: Date, default: Date.now, index: true }
});📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| const mongoose= require('mongoose'); | |
| const scanSchema =new mongoose.Schema({ //Scan date update in db | |
| userId: { type: String, enum: ['lunch', 'snck'], required: true }, | |
| date :{ type: Date, default: Date.now}, | |
| }); | |
| const mongoose= require('mongoose'); | |
| const scanSchema = new mongoose.Schema({ | |
| scanType: { type: String, enum: ['lunch', 'snack'], required: true }, | |
| userId: { type: mongoose.Schema.Types.ObjectId, ref: 'User', required: true }, | |
| date: { type: Date, default: Date.now, index: true } | |
| }); |
| password:{ type: String, required: true, match:/^[a-zA-Z0-9]+$/, | ||
| } |
There was a problem hiding this comment.
Strengthen password security.
The current password validation is insufficient:
- Allows weak passwords (only alphanumeric)
- No minimum length requirement
- No password hashing
- password:{ type: String, required: true, match:/^[a-zA-Z0-9]+$/,
- }
+ password: {
+ type: String,
+ required: true,
+ minlength: 8,
+ match: /^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{8,}$/
+ }Also, add a pre-save hook to hash the password:
const bcrypt = require('bcrypt');
userSchema.pre('save', async function(next) {
if (this.isModified('password')) {
this.password = await bcrypt.hash(this.password, 10);
}
next();
});
Backend/models/User.js
Outdated
| @@ -0,0 +1,8 @@ | |||
| const mongoose= require('mongoose'); | |||
|
|
|||
| const userSchema= new mongoose.schema({ //login details connected to db | |||
There was a problem hiding this comment.
Fix schema name casing.
The schema name is incorrectly cased. Mongoose's method is named Schema, not schema.
-const userSchema= new mongoose.schema({
+const userSchema= new mongoose.Schema({📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| const userSchema= new mongoose.schema({ //login details connected to db | |
| const userSchema= new mongoose.Schema({ //login details connected to db |
Backend/middleware/auth.js
Outdated
| if (!token) return res.status(401).send('Access Denied'); | ||
|
|
||
| try{ | ||
| const decoded= jwt.verify(token, 'secret_key'); |
There was a problem hiding this comment.
Move secret key to environment variables.
Don't hardcode the JWT secret key in the code. Use environment variables instead.
- const decoded= jwt.verify(token, 'secret_key');
+ const decoded = jwt.verify(token, process.env.JWT_SECRET);
Backend/routes/auth.js
Outdated
| router.post('/register', async(req, res) => { | ||
| const { username, password}=req.body; | ||
| const hashedPassword=await bcrypt.hash(password, 10); | ||
| const User= new User({username, password: hashedPassword }); | ||
| await username.save(); | ||
| res.status(201).send('User registered'); | ||
| }); |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Add input validation and error handling to registration endpoint.
The registration endpoint lacks input validation and proper error handling.
Here's a suggested implementation:
router.post('/register', async(req, res) => {
+ try {
const { username, password}=req.body;
+ if (!username || !password) {
+ return res.status(400).json({ error: 'Username and password are required' });
+ }
+ if (password.length < 8) {
+ return res.status(400).json({ error: 'Password must be at least 8 characters long' });
+ }
+ const existingUser = await User.findOne({ username });
+ if (existingUser) {
+ return res.status(400).json({ error: 'Username already exists' });
+ }
const hashedPassword=await bcrypt.hash(password, 10);
- const User= new User({username, password: hashedPassword });
- await username.save();
- res.status(201).send('User registered');
+ const user = new User({username, password: hashedPassword });
+ await user.save();
+ res.status(201).json({ message: 'User registered successfully' });
+ } catch (error) {
+ console.error('Registration error:', error);
+ res.status(500).json({ error: 'Internal server error' });
+ }
});📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| router.post('/register', async(req, res) => { | |
| const { username, password}=req.body; | |
| const hashedPassword=await bcrypt.hash(password, 10); | |
| const User= new User({username, password: hashedPassword }); | |
| await username.save(); | |
| res.status(201).send('User registered'); | |
| }); | |
| router.post('/register', async (req, res) => { | |
| try { | |
| const { username, password } = req.body; | |
| if (!username || !password) { | |
| return res.status(400).json({ error: 'Username and password are required' }); | |
| } | |
| if (password.length < 8) { | |
| return res.status(400).json({ error: 'Password must be at least 8 characters long' }); | |
| } | |
| const existingUser = await User.findOne({ username }); | |
| if (existingUser) { | |
| return res.status(400).json({ error: 'Username already exists' }); | |
| } | |
| const hashedPassword = await bcrypt.hash(password, 10); | |
| const user = new User({ username, password: hashedPassword }); | |
| await user.save(); | |
| res.status(201).json({ message: 'User registered successfully' }); | |
| } catch (error) { | |
| console.error('Registration error:', error); | |
| res.status(500).json({ error: 'Internal server error' }); | |
| } | |
| }); |
🧰 Tools
🪛 Biome (1.9.4)
[error] 10-10: This variable is used before its declaration.
The variable is declared here:
(lint/correctness/noInvalidUseBeforeDeclaration)
Backend/routes/scan.js
Outdated
| if(type==='lunch' && !(hours>=11 && minutes>=30 && hours<14)){ //to check whether scanning of lunch time is valid | ||
| return res.status(400).send('Lunch sacnning is only allwed between 11:30 AM and 2:00 PM'); | ||
| } |
There was a problem hiding this comment.
Fix time window logic edge cases.
The current time window checks have edge cases that could cause incorrect validations:
- For lunch (11:30 AM - 2:00 PM), the current logic fails at exactly 2 PM
- For snack (3:30 PM - 5:00 PM), the current logic fails at exactly 5 PM
Apply this fix:
- if(type==='lunch' && !(hours>=11 && minutes>=30 && hours<14)){
+ const currentTime = hours * 60 + minutes;
+ if(type==='lunch' && !(currentTime >= 690 && currentTime <= 840)){ // 690 = 11:30, 840 = 14:00
return res.status(400).send('Lunch sacnning is only allwed between 11:30 AM and 2:00 PM');
}
- if(type=== 'snack' && !(hours>=15 && minutes>=30 && hours<17)){
+ if(type=== 'snack' && !(currentTime >= 930 && currentTime <= 1020)){ // 930 = 15:30, 1020 = 17:00
return res.status(400).send('Snack scanning is only allowed between 3:30 PM and 5:00 PM');
}Also applies to: 17-19
Backend/routes/scan.js
Outdated
| if(type=== 'snack' && !(hours>=15 && minutes>=30 && hours<17)){ //to check whether scanning of snack time is valid | ||
| return res.status(400).send('Snack scanning is only allowed between 3:30 PM and 5:00 PM'); | ||
| } | ||
| const existingScan=await Scan.findone({ userId, type, date: { $gte: new Date().setHours(0,0,0,0)}}); |
There was a problem hiding this comment.
Fix typo in findOne method.
There's a typo in the method name which will cause a runtime error.
- const existingScan=await Scan.findone({ userId, type, date: { $gte: new Date().setHours(0,0,0,0)}});
+ const existingScan=await Scan.findOne({ userId, type, date: { $gte: new Date().setHours(0,0,0,0)}});📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| const existingScan=await Scan.findone({ userId, type, date: { $gte: new Date().setHours(0,0,0,0)}}); | |
| const existingScan=await Scan.findOne({ userId, type, date: { $gte: new Date().setHours(0,0,0,0)}}); |
Backend/routes/scan.js
Outdated
| if (existingScan){ //to check whether a scanning already occured in the given time | ||
| return res.status(400).send('Already scanned today'); | ||
| } | ||
| const scan= new scan({userId, type}); |
There was a problem hiding this comment.
Fix variable case mismatch.
The variable case doesn't match the imported Scan model.
- const scan= new scan({userId, type});
+ const scan= new Scan({userId, type});📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| const scan= new scan({userId, type}); | |
| const scan= new Scan({userId, type}); |
🧰 Tools
🪛 Biome (1.9.4)
[error] 24-24: This variable is used before its declaration.
The variable is declared here:
(lint/correctness/noInvalidUseBeforeDeclaration)
Backend/routes/scan.js
Outdated
| router.post('/scan',authenticate, async(req,res)=> { //to get info about user and the current time | ||
| const {type}= req.body; | ||
| const userId=req.userId; | ||
| const now= new Date(); | ||
| const hours= now.getHours(); | ||
| const minutes=now.getMinutes(); | ||
|
|
||
| if(type==='lunch' && !(hours>=11 && minutes>=30 && hours<14)){ //to check whether scanning of lunch time is valid | ||
| return res.status(400).send('Lunch sacnning is only allwed between 11:30 AM and 2:00 PM'); | ||
| } | ||
|
|
||
| if(type=== 'snack' && !(hours>=15 && minutes>=30 && hours<17)){ //to check whether scanning of snack time is valid | ||
| return res.status(400).send('Snack scanning is only allowed between 3:30 PM and 5:00 PM'); | ||
| } | ||
| const existingScan=await Scan.findone({ userId, type, date: { $gte: new Date().setHours(0,0,0,0)}}); | ||
| if (existingScan){ //to check whether a scanning already occured in the given time | ||
| return res.status(400).send('Already scanned today'); | ||
| } | ||
| const scan= new scan({userId, type}); | ||
| await scan.save(); //to save current scan | ||
| res.send('Scan successful'); | ||
| }); |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Add error handling and input validation.
The scan endpoint lacks error handling and input validation.
Here's a suggested implementation:
router.post('/scan',authenticate, async(req,res)=> {
+ try {
const {type}= req.body;
+ if (!type) {
+ return res.status(400).json({ error: 'Scan type is required' });
+ }
+ if (!['lunch', 'snack'].includes(type)) {
+ return res.status(400).json({ error: 'Invalid scan type' });
+ }
const userId=req.userId;
const now= new Date();
const hours= now.getHours();
const minutes=now.getMinutes();
const currentTime = hours * 60 + minutes;
- if(type==='lunch' && !(currentTime >= 690 && currentTime <= 840)){
- return res.status(400).send('Lunch sacnning is only allwed between 11:30 AM and 2:00 PM');
+ if(type==='lunch' && !(currentTime >= 690 && currentTime <= 840)){
+ return res.status(400).json({ error: 'Lunch scanning is only allowed between 11:30 AM and 2:00 PM' });
}
- if(type=== 'snack' && !(currentTime >= 930 && currentTime <= 1020)){
- return res.status(400).send('Snack scanning is only allowed between 3:30 PM and 5:00 PM');
+ if(type=== 'snack' && !(currentTime >= 930 && currentTime <= 1020)){
+ return res.status(400).json({ error: 'Snack scanning is only allowed between 3:30 PM and 5:00 PM' });
}
const existingScan=await Scan.findOne({ userId, type, date: { $gte: new Date().setHours(0,0,0,0)}});
if (existingScan){
- return res.status(400).send('Already scanned today');
+ return res.status(400).json({ error: 'Already scanned today' });
}
const scan= new Scan({userId, type});
await scan.save();
- res.send('Scan successful');
+ res.status(201).json({ message: 'Scan successful' });
+ } catch (error) {
+ console.error('Scan error:', error);
+ res.status(500).json({ error: 'Internal server error' });
+ }
});📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| router.post('/scan',authenticate, async(req,res)=> { //to get info about user and the current time | |
| const {type}= req.body; | |
| const userId=req.userId; | |
| const now= new Date(); | |
| const hours= now.getHours(); | |
| const minutes=now.getMinutes(); | |
| if(type==='lunch' && !(hours>=11 && minutes>=30 && hours<14)){ //to check whether scanning of lunch time is valid | |
| return res.status(400).send('Lunch sacnning is only allwed between 11:30 AM and 2:00 PM'); | |
| } | |
| if(type=== 'snack' && !(hours>=15 && minutes>=30 && hours<17)){ //to check whether scanning of snack time is valid | |
| return res.status(400).send('Snack scanning is only allowed between 3:30 PM and 5:00 PM'); | |
| } | |
| const existingScan=await Scan.findone({ userId, type, date: { $gte: new Date().setHours(0,0,0,0)}}); | |
| if (existingScan){ //to check whether a scanning already occured in the given time | |
| return res.status(400).send('Already scanned today'); | |
| } | |
| const scan= new scan({userId, type}); | |
| await scan.save(); //to save current scan | |
| res.send('Scan successful'); | |
| }); | |
| router.post('/scan', authenticate, async (req, res) => { | |
| try { | |
| const { type } = req.body; | |
| if (!type) { | |
| return res.status(400).json({ error: 'Scan type is required' }); | |
| } | |
| if (!['lunch', 'snack'].includes(type)) { | |
| return res.status(400).json({ error: 'Invalid scan type' }); | |
| } | |
| const userId = req.userId; | |
| const now = new Date(); | |
| const hours = now.getHours(); | |
| const minutes = now.getMinutes(); | |
| const currentTime = hours * 60 + minutes; | |
| if (type === 'lunch' && !(currentTime >= 690 && currentTime <= 840)) { | |
| return res.status(400).json({ error: 'Lunch scanning is only allowed between 11:30 AM and 2:00 PM' }); | |
| } | |
| if (type === 'snack' && !(currentTime >= 930 && currentTime <= 1020)) { | |
| return res.status(400).json({ error: 'Snack scanning is only allowed between 3:30 PM and 5:00 PM' }); | |
| } | |
| const existingScan = await Scan.findOne({ | |
| userId, | |
| type, | |
| date: { $gte: new Date().setHours(0, 0, 0, 0) } | |
| }); | |
| if (existingScan) { | |
| return res.status(400).json({ error: 'Already scanned today' }); | |
| } | |
| const scan = new Scan({ userId, type }); | |
| await scan.save(); | |
| res.status(201).json({ message: 'Scan successful' }); | |
| } catch (error) { | |
| console.error('Scan error:', error); | |
| res.status(500).json({ error: 'Internal server error' }); | |
| } | |
| }); |
🧰 Tools
🪛 Biome (1.9.4)
[error] 24-24: This variable is used before its declaration.
The variable is declared here:
(lint/correctness/noInvalidUseBeforeDeclaration)
There was a problem hiding this comment.
Actionable comments posted: 5
🧹 Nitpick comments (3)
Backend/models/Scan.js (1)
5-5: Add index to date field for query optimization.The
datefield is frequently used in queries to check for existing scans within a time window. Adding an index will improve query performance.- date :{ type: Date, default: Date.now}, + date: { type: Date, default: Date.now, index: true },Backend/controllers/scanController.js (2)
19-23: Simplify date query and add input validation.The date query could be simplified, and input validation for the scan type should be added.
+ if (!['lunch', 'snack'].includes(type)) { + return res.status(400).json({ error: 'Invalid scan type' }); + } + try { - const existingScan = await Scan.findOne({ userId, type, date: { $gte: new Date().setHours(0, 0, 0, 0) } }); + const today = new Date(); + today.setHours(0, 0, 0, 0); + const existingScan = await Scan.findOne({ + userId, + type, + date: { + $gte: today, + $lt: new Date(today.getTime() + 24 * 60 * 60 * 1000) + } + });
28-30: Improve error handling with specific error messages.The current error handling uses a generic message. Consider logging the error and providing more specific error messages based on the error type.
} catch (err) { - res.status(500).json({ error: 'Error processing scan' }); + console.error('Scan error:', err); + res.status(500).json({ + error: err.name === 'ValidationError' + ? 'Invalid scan data' + : 'Internal server error while processing scan' + }); }
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro
📒 Files selected for processing (10)
Backend/.env(1 hunks)Backend/Server.js(1 hunks)Backend/config/db.js(1 hunks)Backend/controllers/authController.js(1 hunks)Backend/controllers/scanController.js(1 hunks)Backend/middleware/auth.js(1 hunks)Backend/models/Scan.js(1 hunks)Backend/models/User.js(1 hunks)Backend/routes/auth.js(1 hunks)Backend/routes/scan.js(1 hunks)
✅ Files skipped from review due to trivial changes (1)
- Backend/.env
🚧 Files skipped from review as they are similar to previous changes (4)
- Backend/models/User.js
- Backend/routes/auth.js
- Backend/middleware/auth.js
- Backend/routes/scan.js
🔇 Additional comments (2)
Backend/controllers/authController.js (1)
1-4: Consider pinning dependency versions for security.For security-critical dependencies like
bcryptjsandjsonwebtoken, it's recommended to pin specific versions to prevent potential security issues from automatic updates.Let's check the latest stable versions and any security advisories:
✅ Verification successful
🌐 Web query:
What are the latest stable versions of bcryptjs and jsonwebtoken npm packages? Are there any known security vulnerabilities?💡 Result:
The latest stable versions and security statuses for these npm packages are: ## Bcryptjs - **Latest version**: 2.4.3 ([last published Feb 2017][10]) - **Security status**: No active vulnerabilities reported in search results - Key details: - Pure JavaScript implementation with zero dependencies[10] - Compatible with C++ bcrypt but ~30% slower[10] - Maximum input length: 72 bytes[10] ## JsonWebToken - **Latest version**: 9.0.2 ([released Aug 2023][2][9]) - **Security status**: Critical vulnerabilities fixed in v9.x: - CVE-2022-23529 (Arbitrary File Write)[3][6] - CVE-2022-23540 (Insecure default algorithm)[2][6] - CVE-2022-23541 (Key type validation)[2][6] **Upgrade recommendations**: | Package | Minimum Secure Version | Key Changes | |---------|------------------------|-------------| | jsonwebtoken | v9.0.0+ | Removed Node <12 support<br>Enforced RSA key size ≥2048 bits<br>Stricter algorithm validation[2][6] | | bcryptjs | v2.4.3 | No security patches needed per available data[10] | For jsonwebtoken users: ```bash npm install [email protected] ``` This addresses critical vulnerabilities present in versions ≤8.x through improved algorithm enforcement and key validation[2][3][6]. Citations: - 1: https://www.npmjs.com/package/bcrypt - 2: https://github.com/auth0/node-jsonwebtoken/blob/master/CHANGELOG.md - 3: https://anchore.com/blog/finding-and-fixing-the-jsonwebtoken-vulnerabilities/ - 4: https://github.com/kelektiv/node.bcrypt.js/issues/773 - 5: https://www.npmjs.com/package/@types/jsonwebtoken - 6: https://unit42.paloaltonetworks.com/jsonwebtoken-vulnerability-cve-2022-23529/ - 7: https://teamtreehouse.com/community/bcrypt-deprecated - 8: https://mvnrepository.com/artifact/io.jsonwebtoken/jjwt - 9: https://security.snyk.io/package/npm/jsonwebtoken - 10: https://www.npmjs.com/package/bcryptjs
Pin dependency versions for enhanced security
Upon reviewing the implementation and comparing it with the latest stable versions:
- For bcryptjs, version 2.4.3 is the current stable release without known vulnerabilities.
- For jsonwebtoken, version 9.0.2 is recommended as it includes fixes for critical issues (e.g., CVE-2022-23529, CVE-2022-23540, CVE-2022-23541).
It is advisable to pin these versions (e.g., in package.json) to prevent unintended updates and potential security risks.
Backend/Server.js (1)
10-10:⚠️ Potential issueFix CORS middleware typo and initialization.
The CORS middleware has a typo ('corse' instead of 'cors'). Also, the Express app needs to be initialized before using middleware.
+const app = express(); -app.use(corse()); +app.use(cors());Likely invalid or redundant comment.
| exports.register = async (req, res) => { //to register new user | ||
| const { username, password } = req.body; | ||
| try { | ||
| const hashedPassword = await bcrypt.hash(password, 10); | ||
| const user = new User({ username, password: hashedPassword }); | ||
| await user.save(); | ||
| res.status(201).json({ message: 'User registered successfully' }); | ||
| } catch (err) { | ||
| res.status(500).json({ error: 'Error registering user' }); | ||
| } | ||
| }; |
There was a problem hiding this comment.
Add input validation and duplicate username check.
The registration function needs several security improvements:
- Add input validation for username and password
- Check for existing username before registration
- Implement password strength requirements
- Provide more specific error handling
Here's a suggested implementation:
exports.register = async (req, res) => {
const { username, password } = req.body;
+ // Input validation
+ if (!username || !password) {
+ return res.status(400).json({ error: 'Username and password are required' });
+ }
+ if (password.length < 8) {
+ return res.status(400).json({ error: 'Password must be at least 8 characters long' });
+ }
try {
+ // Check for existing user
+ const existingUser = await User.findOne({ username });
+ if (existingUser) {
+ return res.status(400).json({ error: 'Username already exists' });
+ }
const hashedPassword = await bcrypt.hash(password, 10);
const user = new User({ username, password: hashedPassword });
await user.save();
res.status(201).json({ message: 'User registered successfully' });
} catch (err) {
- res.status(500).json({ error: 'Error registering user' });
+ console.error('Registration error:', err);
+ res.status(500).json({ error: 'Internal server error during registration' });
}
};| exports.login = async (req, res) => { //Authenticate access | ||
| const { username, password } = req.body; | ||
| try { | ||
| const user= await User.findOne({ username }); | ||
| if (!user || !(await bcrypt.compare(password, user.password))) { // //to check whether the login details are valid | ||
| return res.status(400).json({ error: 'Invalid credentials' }); | ||
| } | ||
| const token= jwt.sign({ userId: user._id }, jwtSecret, { expiresIn: '1h' }); | ||
| res.json({ token }); | ||
| } catch (err) { | ||
| res.status(500).json({ error: 'Error logging in' }); | ||
| } | ||
| }; No newline at end of file |
There was a problem hiding this comment.
Enhance login security with rate limiting and better error handling.
The login function needs several security improvements:
- Add input validation
- Implement rate limiting for failed attempts
- Make token expiration configurable
- Improve error handling specificity
Here's a suggested implementation:
+const rateLimit = require('express-rate-limit');
+
+// Rate limiting for failed login attempts
+const loginLimiter = rateLimit({
+ windowMs: 15 * 60 * 1000, // 15 minutes
+ max: 5 // limit each IP to 5 requests per windowMs
+});
+
exports.login = async (req, res) => {
const { username, password } = req.body;
+ // Input validation
+ if (!username || !password) {
+ return res.status(400).json({ error: 'Username and password are required' });
+ }
try {
const user = await User.findOne({ username });
if (!user || !(await bcrypt.compare(password, user.password))) {
+ // Log failed attempt
+ console.warn(`Failed login attempt for username: ${username}`);
return res.status(400).json({ error: 'Invalid credentials' });
}
- const token = jwt.sign({ userId: user._id }, jwtSecret, { expiresIn: '1h' });
+ const token = jwt.sign(
+ { userId: user._id },
+ jwtSecret,
+ { expiresIn: process.env.JWT_EXPIRATION || '1h' }
+ );
res.json({ token });
} catch (err) {
- res.status(500).json({ error: 'Error logging in' });
+ console.error('Login error:', err);
+ res.status(500).json({ error: 'Internal server error during login' });
}
};Additionally, consider implementing the following security measures:
- Add CSRF protection
- Implement secure session handling
- Add request sanitization
📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| exports.login = async (req, res) => { //Authenticate access | |
| const { username, password } = req.body; | |
| try { | |
| const user= await User.findOne({ username }); | |
| if (!user || !(await bcrypt.compare(password, user.password))) { // //to check whether the login details are valid | |
| return res.status(400).json({ error: 'Invalid credentials' }); | |
| } | |
| const token= jwt.sign({ userId: user._id }, jwtSecret, { expiresIn: '1h' }); | |
| res.json({ token }); | |
| } catch (err) { | |
| res.status(500).json({ error: 'Error logging in' }); | |
| } | |
| }; | |
| const rateLimit = require('express-rate-limit'); | |
| // Rate limiting for failed login attempts | |
| const loginLimiter = rateLimit({ | |
| windowMs: 15 * 60 * 1000, // 15 minutes | |
| max: 5 // limit each IP to 5 requests per windowMs | |
| }); | |
| exports.login = async (req, res) => { //Authenticate access | |
| const { username, password } = req.body; | |
| // Input validation | |
| if (!username || !password) { | |
| return res.status(400).json({ error: 'Username and password are required' }); | |
| } | |
| try { | |
| const user = await User.findOne({ username }); | |
| if (!user || !(await bcrypt.compare(password, user.password))) { // to check whether the login details are valid | |
| // Log failed attempt | |
| console.warn(`Failed login attempt for username: ${username}`); | |
| return res.status(400).json({ error: 'Invalid credentials' }); | |
| } | |
| const token = jwt.sign( | |
| { userId: user._id }, | |
| jwtSecret, | |
| { expiresIn: process.env.JWT_EXPIRATION || '1h' } | |
| ); | |
| res.json({ token }); | |
| } catch (err) { | |
| console.error('Login error:', err); | |
| res.status(500).json({ error: 'Internal server error during login' }); | |
| } | |
| }; |
| const mongoose= require('mongoose'); | ||
|
|
||
| const connectDB = async () => { | ||
| try { | ||
| await mongoose.connect(process.env.MONGO_URI, { | ||
| useNewUrlParser: true, | ||
| useUnifiedTopology: true | ||
| }); |
There was a problem hiding this comment.
Load environment variables before accessing them.
The dotenv configuration should be loaded before accessing process.env.MONGO_URI. Move the require('dotenv').config() call to the top of the file.
+require('dotenv').config();
const mongoose= require('mongoose');
const connectDB = async () => {
try {
await mongoose.connect(process.env.MONGO_URI, {
useNewUrlParser: true,
useUnifiedTopology: true📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| const mongoose= require('mongoose'); | |
| const connectDB = async () => { | |
| try { | |
| await mongoose.connect(process.env.MONGO_URI, { | |
| useNewUrlParser: true, | |
| useUnifiedTopology: true | |
| }); | |
| require('dotenv').config(); | |
| const mongoose= require('mongoose'); | |
| const connectDB = async () => { | |
| try { | |
| await mongoose.connect(process.env.MONGO_URI, { | |
| useNewUrlParser: true, | |
| useUnifiedTopology: true | |
| }); |
| app.use('/api/auth', authRoutes); | ||
| app.use('/api/scan', scanRoutes); | ||
| require('dotenv').config(); |
There was a problem hiding this comment.
Load environment variables before mounting routes.
The dotenv configuration should be loaded before accessing environment variables in routes. Move the require('dotenv').config() call to the top of the file.
+require('dotenv').config();
+
const connectDB = require('./config/db');
const express = require('express');
// ... rest of the imports
app.use('/api/auth', authRoutes);
app.use('/api/scan', scanRoutes);
-require('dotenv').config();📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| app.use('/api/auth', authRoutes); | |
| app.use('/api/scan', scanRoutes); | |
| require('dotenv').config(); | |
| require('dotenv').config(); | |
| const connectDB = require('./config/db'); | |
| const express = require('express'); | |
| // ... rest of the imports | |
| app.use('/api/auth', authRoutes); | |
| app.use('/api/scan', scanRoutes); |
| if (type === 'lunch' && !(hours >= 11 && minutes >= 30 && hours < 14)) { //to check whether scanning of lunch time is valid | ||
| return res.status(400).json({ error: 'Lunch scanning is only allowed between 11:30 AM and 2:00 PM' }); | ||
| } | ||
|
|
||
| if (type === 'snack' && !(hours >= 15 && minutes >= 30 && hours < 17)) { //to check whether scanning of snack time is valid | ||
| return res.status(400).json({ error: 'Snack scanning is only allowed between 3:30 PM and 5:00 PM' }); | ||
| } |
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Fix time window comparison logic.
The current time window checks are incorrect and may allow scans outside the intended windows. For example, at 11:00 with minutes >= 30, the lunch check would pass.
- if (type === 'lunch' && !(hours >= 11 && minutes >= 30 && hours < 14)) {
+ const currentTime = hours * 60 + minutes;
+ const lunchStart = 11 * 60 + 30; // 11:30
+ const lunchEnd = 14 * 60; // 14:00
+ if (type === 'lunch' && (currentTime < lunchStart || currentTime >= lunchEnd)) {
return res.status(400).json({ error: 'Lunch scanning is only allowed between 11:30 AM and 2:00 PM' });
}
- if (type === 'snack' && !(hours >= 15 && minutes >= 30 && hours < 17)) {
+ const snackStart = 15 * 60 + 30; // 15:30
+ const snackEnd = 17 * 60; // 17:00
+ if (type === 'snack' && (currentTime < snackStart || currentTime >= snackEnd)) {1 participant
Backend created
Summary by CodeRabbit