3 from twisted.web.server import Site
4 from twisted.web.resource import Resource
5 from twisted.web.server import NOT_DONE_YET
6 from twisted.internet import reactor
19 r = ipaddress.IPv4Address(input)
20 except AddressValueError:
21 r = ipaddress.IPv6Address(input)
26 r = ipaddress.IPv4Network(input)
27 except NetworkValueError:
28 r = ipaddress.IPv6Network(input)
38 max_batch_down: 262144
43 def route(packet. daddr):
44 try: client = clients[daddr]
45 except KeyError: dclient = None
46 if dclient is not None:
47 dclient.queue_outbound(packet)
48 else if daddr = server or daddr not in network:
51 syslog.syslog(syslog.LOG_DEBUG, 'no client for %s' % daddr)
54 def __init__(self, ip, cs):
55 # instance data members
58 self.pw = cfg.get(cs, 'password')
59 self._rq = collections.deque() # requests
60 self._pq = collections.deque() # packets
65 for k in ('max_batch_down','max_queue_time','max_request_time'):
66 req = cfg.getint(cs, k)
67 limit = cfg.getint('global',k)
68 self.__dict__[k] = min(req, limit)
70 def process_arriving_data(self, d):
71 for packet in slip_decode(d):
72 (saddr, daddr) = ip_64_addrs(packet)
74 raise ValueError('wrong source address %s' % saddr)
77 def _req_cancel(self, request):
80 def _req_error(self, err, request):
81 self._req_cancel(request)
83 def queue_outbound(self, packet):
84 self._pq.append((time.time, packet))
86 def http_request(self, request):
87 request.setHeader('Content-Type','application/octet-stream')
88 reactor.callLater(self.max_request_time, self._req_cancel, request)
89 request.notifyFinish().addErrback(self._req_error, request)
90 self._rq.append(request)
91 self._check_outbound()
93 def _check_outbound(self):
95 try: request = self._rq[0]
96 except IndexError: request = None
97 if request and request.finished:
101 # now request is an unfinished request, or None
102 try: (queuetime, packet) = self._pq[0]
104 # no packets, oh well
107 age = time.time() - queuetime
113 network = ipnetwork(cfg.get('virtual','network'))
115 ourself = cfg.get('virtual','server')
116 except ConfigParser.NoOptionError:
117 ourself = network.hosts().next()
119 for cs in cfg.sections():
120 if not (':' in cs or '.' in cs): continue
122 if ci not in network:
123 raise ValueError('client %s not in network' % ci)
125 raise ValueError('multiple client cfg sections for %s' % ci)
126 clients[ci] = Client(ci, cs)
128 class FormPage(Resource):
129 def render_POST(self, request):
130 # find client, update config, etc.
131 ci = ipaddress(request.args['i'])
133 pw = request.args['pw']
134 if pw != c.pw: raise ValueError('bad password')
137 for r, w in (('mbd', 'max_batch_down'),
138 ('mqt', 'max_queue_time'),
139 ('mrt', 'max_request_time')):
140 try: v = request.args[r]
141 except KeyError: continue
145 try: d = request.args['d']
146 except KeyError: d = ''
148 c.process_arriving_data(d)
149 c.new_request(request)