TailingsPond + 1,013 GE January 4 To block a bot that is spamming a website forum, we can implement several anti-bot mechanisms. Below is an example of Python code that could be used in a web framework like Flask, Django, or similar. The code outlines a method for detecting and blocking bots based on IP rate-limiting, checking for known bot user agents, and requiring a CAPTCHA challenge. Here’s a basic implementation of a bot-blocking mechanism: Requirements: Flask web framework for building a web server. Flask-Limiter for rate limiting. reCAPTCHA or similar challenge for bot prevention. User-Agent check for detecting known bots Python Code: pip install Flask Flask-Limiter requests from flask import Flask, request, jsonify, render_template_string from flask_limiter import Limiter from flask_limiter.util import get_remote_address import re # Initialize Flask app and Flask-Limiter for rate limiting app = Flask(__name__) limiter = Limiter(get_remote_address, app=app) # Simple known bot user agents for blocking KNOWN_BOTS = [ "Googlebot", "Bingbot", "Slurp", "DuckDuckBot", "Baiduspider", "YandexBot", "Sogou", "Facebook", "Twitterbot", "WhatsApp" ] # Helper function to check user-agent for bots def is_bot(user_agent): for bot in KNOWN_BOTS: if bot.lower() in user_agent.lower(): return True return False # Rate limiting rule: limit to 5 requests per minute per IP address @limiter.limit("5 per minute") @app.route("/forum", methods=["POST"]) def forum_post(): # Check for bot in user-agent header user_agent = request.headers.get('User-Agent', '') if is_bot(user_agent): return jsonify({"error": "Bot detected. Your request has been blocked."}), 403 # If it's a legitimate post, proceed (add CAPTCHA validation in real scenarios) data = request.json if not data.get("captcha") == "valid_captcha_token": # Replace with actual CAPTCHA verification return jsonify({"error": "Failed CAPTCHA verification."}), 403 # Process the forum post # For simplicity, just echo back the message return jsonify({"message": f"Post received: {data.get('message')}"}) # Simple HTML page that users can visit to post to the forum @app.route("/") def index(): return render_template_string(""" <html> <body> <h1>Forum</h1> <form method="POST" action="/forum"> <textarea name="message"></textarea><br> <!-- Add CAPTCHA here --> <input type="text" name="captcha" placeholder="Enter CAPTCHA"><br> <input type="submit" value="Post"> </form> </body> </html> """) if __name__ == "__main__": app.run(debug=True) Quote Share this post Link to post Share on other sites
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