229 lines
6.9 KiB
Python
229 lines
6.9 KiB
Python
#!/usr/bin/env python3
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USERLENGTH = 50
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import ipaddress
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import random
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import sys
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import etcd
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import ungleichapi
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import json
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import datetime
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from flask import Flask, abort, request, Response
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from flask_restful import reqparse
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# app = Flask(__name__)
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def get_random_ip(network):
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net = ipaddress.IPv6Network(network)
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addr_offset = random.randrange(2**64)
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addr = net[0] + addr_offset
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return addr
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class Challenge(object):
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""" A sample challenge -- inherit this and overwrite accordingly """
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points = 0
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provides = []
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requires = []
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def __init__(self, etcdclient):
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self.client = etcdclient
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def require_args(self, *args):
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parser = reqparse.RequestParser()
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for arg in args:
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parser.add_argument(arg, required=True)
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return parser.parse_args()
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def describe(self):
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return self.description
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def save_points(self, user):
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""" should be called when the challenge was solved successfully"""
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path = "/ungleichgame/v1/{}/challenges/{}/points".format(user, self.__name__)
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self.client.write(path, self.points)
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def solve(self):
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""" Needs to be implemented per challenge """
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pass
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class RegisterNet(Challenge):
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points = 10
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provides = [ "network" ]
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description = """
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Register a /64 IPv6 network that you fully control.
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Many other challenges depend on this. You will need to
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be able to configure IPv6 addresses in this networks
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and to setup services listening on these IPv6 addresses.
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Submit your network with the "network" parameter.
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"""
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def solve(self):
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self.require_args("user", "network")
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try:
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net = ipaddress.IPv6Network(args['network'])
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network = args['network']
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except Exception as e:
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return Response(status=400, response="Cannot register network {}: {}".format(network, e))
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if not net.prefixlen == 64:
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return Response(status=400, response="{} mask is not /64 - please use a /64 network".format(net))
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# Save network
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self.client.write("/ungleichgame/v1/{}/network".format(user), network)
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self.save_points(args['user'])
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return json.dumps("All good, go to /level/1 to start with level 1! - {}".format(data.value))
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class Game(object):
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def __init__(self, name, etcdclient, etcbase="/ungleichgame/v1"):
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self.client = etcdclient
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self.app = Flask(name)
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self.app.add_url_rule('/', 'highscore', self.highscore)
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self.app.add_url_rule('/highscore', 'highscore', self.highscore)
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# etcd paths are below here
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self.etcbase = etcbase
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self.userbase = "{}/user".format(self.etcbase)
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# Automate this
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challenges = [ RegisterNet ]
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for challenge in challenges:
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c = challenge(self.client)
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name = c.__name__
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path = "/challenge/{}".format(name)
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self.app.add_url_rule(path, name, c.describe, methods=['GET'])
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self.app.add_url_rule(path, name, c.solve, methods=['POST'])
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def read_etcd(self, path, recursive=False):
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try:
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data = self.client.read(path, recursive=recursive)
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except etcd.EtcdKeyNotFound:
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return None
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except Exception:
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abort(Response(status=400, response="Error connecting to etcd"))
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return data
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def get_highscore(self, username=None):
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""" Returns a dict['username'] = points """
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all_users = {}
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highscore = {}
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print("getting high")
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if username:
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path = "{}/{}".format(self.userbase, username)
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user = self.read_etcd(path)
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if user:
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all_users[username] = user
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else:
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path = "{}/".format(self.userbase)
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users = self.read_etcd(path, recursive=True)
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print("reading from {}".format(path))
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if users:
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for child in users.children:
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print("adding user {} {} = {}".format(child, child.key, child.value))
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all_users[child.key] = child.value
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for k, v in all_users.items():
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# Ignore all kind of errors - just add the ones that work
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try:
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highscore[k] = json.loads(v)['points']
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print("f?")
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except Exception as e:
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print(e)
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return highscore
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def highscore(self):
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point_list = self.get_highscore()
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res = []
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if not point_list:
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return Response("No winners yet!")
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for k, v in point_list.items():
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res.append("<p>{} has {} points</p>".format(k, v))
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return Response("\n".join(res))
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# def get_ip_address():
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# args = self.require_args("network", "user")
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# # Needs to be fixed with ungleich-otp
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# username=args['user']
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# if request.method == 'GET':
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# return Response("""
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# This is an easy level - just register any /64 network
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# that you fully control. After submission the game server will generate
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# a random IPv6 address in this network.
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# """)
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# client = etcd.Client(port=2379)
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# try:
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# data = client.read("/ungleichgame/v1/{}/network".format(username))
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# # FIXME: differentiate keynotfound and other errors
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# except Exception as e:
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# return Response(status=400, response="Cannot read your network, try registering first (error: {})".format(e))
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# return Response("data={}".format(data.value))
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# address = get_random_ip(data.value)
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# # FIXME: catch errors
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# client.write("/ungleichgame/v1/{}/address".format(username), address)
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# return Response("Your IPv6 address for this game is {}. Make it pingable and post to /level/1/result".format(address))
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# @app.route("/level/2", methods=['GET', 'POST']) # post for username
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# def pingme():
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# parser = reqparse.RequestParser()
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# parser.add_argument('user', required=True)
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# args = parser.parse_args()
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# # Needs to be fixed with ungleich-otp
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# username=args['user']
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# if request.method == 'GET':
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# return Response("""
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# Proof that you can really control the network that you submitted:
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# - Setup the IPv6 address to be ping6 able globally
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# - POST to this address when it is configured
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# """)
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# if request.method == 'POST':
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# try:
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# data = client.read("/ungleichgame/v1/{}/address".format(username), address)
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# except Exception as e:
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# return Response(status=400,
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# response="""
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# You need to register a network before trying to be reachable.
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# Please go back to Level 1 for registering your network.
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# """)
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# return Response("something good")
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if __name__ == '__main__':
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# net_base = "2a0a:e5c1:{:x}::/64"
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# net_offset = random.randrange(0xffff)
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# net = ipaddress.IPv6Network(net_base.format(net_offset))
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# username = 'nico{}'.format(net_offset)
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# print("{} has {}".format(username, net))
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g = Game(__name__, etcd.Client(port=2379))
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g.app.run(host="::", port='5002')
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