Update app.py

app.py

@@ -53,7 +53,43 @@ def get_completion(query, model, tokenizer):
 
 @spaces.GPU()
 def code_review(code_to_analyze):
-    query = f"""Review the following code for security vulnerabilities, logic flaws, and potential improvements:
+    few_shot_prompt = """Review the following code for security vulnerabilities, logic flaws, and potential improvements:
+
+```php
+function authenticateUser($username, $password) {
+    $conn = new mysqli("localhost", "user", "password", "database");
+    $query = "SELECT * FROM users WHERE username = '$username' AND password = '$password'";
+    $result = $conn->query($query);
+    if ($result->num_rows > 0) {
+        return true;
+    }
+    return false;
+}
+```
+
+1. Understanding of the code:
+   - This function attempts to authenticate a user by checking their username and password against a database.
+   - It establishes a database connection, constructs a SQL query with the provided credentials, and executes it.
+   - If any matching rows are found, it returns true (authenticated); otherwise, it returns false.
+
+2. Potential security issues:
+   - SQL Injection vulnerability: The username and password are directly inserted into the query without sanitization.
+   - Plaintext password storage: The code suggests that passwords are stored in plaintext in the database.
+   - Hardcoded database credentials: Connection details are hardcoded, which is a security risk.
+
+3. Potential logic vulnerabilities:
+   - Multiple user authentication: The function returns true if more than one row is returned, which could lead to authentication issues if multiple users have the same credentials.
+   - No input validation: There's no checking for empty or null username/password inputs.
+
+4. Suggestions for improvement:
+   - Use prepared statements to prevent SQL injection.
+   - Implement proper password hashing (e.g., using password_hash() and password_verify()).
+   - Store database credentials securely and separately from the code.
+   - Implement proper error handling and use constant-time comparison for passwords.
+   - Add input validation for username and password.
+   - Consider using a single-row fetch instead of num_rows to ensure single-user authentication.
+
+Now, review the following code using the same approach:
 
 {code_to_analyze}
 
@@ -65,7 +101,7 @@ Provide a detailed review including:
 
 Start each section with its number and title."""
 
-    return get_completion(query, model, tokenizer)
+    return get_completion(few_shot_prompt, model, tokenizer)
 
 # Create Gradio interface
 iface = gr.Interface(