A route decorator for Flask that performs Mashape authentication

flask_mashape.py

import functools

from flask import Flask, request

app = Flask(__name__)

def authenticate_mashape(func):
    '''
    Decorator to authenticate request with Mashape.
    '''
    @functools.wraps(func)
    def wrapper(*args, **kwargs):
        # Mashape authentication
        mashape_secret = request.headers.get('X-Mashape-Proxy-Secret')
        if mashape_secret is not None:
            client_ip = request.access_route[-1]
            if (client_ip in app.config['MASHAPE_IPS'] and
                    mashape_secret == app.config['MASHAPE_SECRET']):
                return func(*args, **kwargs)
        # No authentication
        return "Invalid/expired token", 401
    return wrapper

# Presumably other methods would be /mashape/foo, /mashape/bar, etc.
@app.route('/mashape/')
@authenticate_mashape
def verify_mashape():
    '''
    Verify backend secret and client token are correct.
    
    When decorated with @authenticate_mashape, this verifies that the Mashape
    config is correct and that the client's token is good.
    '''
    return 'OK', 200


# These app configs can go anywhere
app.config['MASHAPE_SECRET'] = "your mashape secret key goes here "
app.config['MASHAPE_IPS'] = [
    "107.23.255.128",
    "107.23.255.129",
    "107.23.255.130",
    "107.23.255.131",
    "107.23.255.132",
    "107.23.255.133",
    "107.23.255.134",
    "107.23.255.135",
    "107.23.255.136",
    "107.23.255.137",
    "107.23.255.138",
    "107.23.255.139",
    "107.23.255.140",
    "107.23.255.141",
    "107.23.255.142",
    "107.23.255.143",
    "107.23.255.144",
    "107.23.255.145",
    "107.23.255.146",
    "107.23.255.147",
    "107.23.255.148",
    "107.23.255.149",
    "107.23.255.150",
    "107.23.255.151",
    "107.23.255.152",
    "107.23.255.153",
    "107.23.255.154",
    "107.23.255.155",
    "107.23.255.156",
    "107.23.255.157",
    "107.23.255.158",
    "107.23.255.159",
    "54.172.117.82",
    "54.174.126.70",
    "54.175.103.105",
    "54.209.110.14",
    "54.86.14.38",
    "54.86.225.32",
    "54.86.245.80",
    "54.88.28.135",
    "54.88.28.194",
    "54.88.32.113",
    "54.88.37.172",
    "54.88.51.199",
    "54.88.53.251",
    "54.88.54.104",
    "54.88.55.60",
    "54.88.55.63",
]