old_contents: # -*- coding: utf-8 -*-
  
  from functools import wraps
  
  from flask import request
  from flask import jsonify
  
  from rio.models  import validate_sender
  
  
  def require_sender(f):
      """A decorator that protect emit view function is triggered by a trusted sender.
  
      Currently, Rio only support Basic Authorization.
      """
      @wraps(f)
      def decorator(*args, **kwargs):
          if not request.authorization:
              return jsonify({message='unauthorized'}), 401
  
          username = request.authorization.username
          password = request.authorization.password
  
          if not validate_sender(username, password):
              return jsonify({message='forbidden'}), 403
      return decorator
  
new_contents: # -*- coding: utf-8 -*-
  
  from functools import wraps
  
  from flask import request
  from flask import jsonify
  
  from rio.models  import validate_sender
  
  
  def require_sender(f):
      """A decorator that protect emit view function is triggered by a trusted sender.
  
      Currently, Rio only support Basic Authorization.
      """
      @wraps(f)
      def decorator(*args, **kwargs):
          if not request.authorization:
              return jsonify({'message': 'unauthorized'}), 401
  
          username = request.authorization.username
          password = request.authorization.password
  
          if not validate_sender(username, password):
              return jsonify({'message': 'forbidden'}), 403
  
          return f(*args, **kwargs)
      return decorator
  
subject: fix utils syntax error.