Patched code sample

import subprocess
import json
from flask import Flask, request, jsonify
from flask_cors import CORS

app = Flask(__name__)
CORS(app)


def safe_code_validation(code):
    """
    Safely validates Python code using a restricted environment.

    Args:
        code: The Python code to validate (string).

    Returns:
        A tuple: (bool, str). The bool indicates validation success,
        the string contains output or error messages.
    """
    try:
        # Create a restricted execution environment.  This is a placeholder;
        # a real solution would use a sandboxing library like PySandbox or similar.
        # The key is to NOT allow arbitrary execution of the provided code.

        # Instead of actual execution, perform static analysis
        # 1. Check for potentially dangerous imports.
        dangerous_imports = ["os", "subprocess", "sys", "shutil", "pickle"] # Extend as necessary
        for imp in dangerous_imports:
            if imp in code:
                return False, f"Error: Code contains potentially dangerous import: {imp}"

        # 2. Check for function calls that could lead to code execution
        dangerous_functions = ["eval", "exec", "compile", "getattr", "__import__"]  # Extend as necessary
        for func in dangerous_functions:
            if func in code:
                return False, f"Error: Code contains potentially dangerous function: {func}"

        # 3. Simple syntax check (can be improved with ast module if needed)
        try:
            compile(code, '<string>', 'exec')  # Check if the code is syntactically correct.
        except SyntaxError as e:
            return False, f"Syntax Error: {e}"

        # If all checks pass, consider it valid (for this simplified example).
        return True, "Code validated successfully (static analysis only)."

    except Exception as e:
        return False, f"Error during validation: {e}"


@app.route('/api/v1/validate/code', methods=['POST'])
def validate_code():
    """
    Endpoint to validate Python code.  This is the fixed version.
    """
    try:
        data = request.get_json()
        code = data['code']
    except (KeyError, TypeError):
        return jsonify({"valid": False, "message": "Invalid request format.  Provide 'code' key."}), 400

    is_valid, message = safe_code_validation(code)

    return jsonify({"valid": is_valid, "message": message})


if __name__ == '__main__':
    app.run(debug=True, host='0.0.0.0', port=5000)