global mtu
c.mtu = cfg.get('virtual','mtu')
+def process_cfg_ipif(section, varmap):
+ for d, s in varmap:
+ try: v = getattr(c, s)
+ except KeyError: pass
+ setattr(c, d, v)
+
+ print(repr(c))
+
+ c.ipif_command = cfg.get(section,'ipif', vars=c.__dict__)
+
+def process_cfg_network():
+ c.network = ipnetwork(cfg.get('virtual','network'))
+ if c.network.num_addresses < 3 + 2:
+ raise ValueError('network needs at least 2^3 addresses')
+
+def process_cfg_server():
+ try:
+ c.server = cfg.get('virtual','server')
+ except NoOptionError:
+ process_cfg_network()
+ c.server = next(c.network.hosts())
+
+class ServerAddr():
+ def __init__(self, port, addrspec):
+ self.port = port
+ # also self.addr
+ try:
+ self.addr = ipaddress.IPv4Address(addrspec)
+ self._endpointfactory = twisted.internet.endpoints.TCP4ServerEndpoint
+ self._inurl = '%s'
+ except AddressValueError:
+ self.addr = ipaddress.IPv6Address(addrspec)
+ self._endpointfactory = twisted.internet.endpoints.TCP6ServerEndpoint
+ self._inurl = '[%s]'
+ def make_endpoint(self):
+ return self._endpointfactory(reactor, self.port, self.addr)
+ def url(self):
+ url = 'http://' + (self._inurl % self.addr)
+ if self.port != 80: url += ':%d' % self.port
+ url += '/'
+ return url
+
+def process_cfg_saddrs():
+ port = cfg.getint('server','port')
+
+ c.saddrs = [ ]
+ for addrspec in cfg.get('server','addrs').split():
+ sa = ServerAddr(port, addrspec)
+ c.saddrs.append(sa)
+
+def process_cfg_clients(constructor):
+ c.clients = [ ]
+ for cs in cfg.sections():
+ if not (':' in cs or '.' in cs): continue
+ ci = ipaddr(cs)
+ pw = cfg.get(cs, 'password')
+ constructor(ci,cs,pw)
+
#---------- startup ----------
def common_startup(defcfg):
[virtual]
mtu = 1500
# network
-# [host]
+# [server]
# [relay]
[server]
dclient.queue_outbound(packet)
elif saddr.is_link_local or daddr.is_link_local:
log_discard(packet, saddr, daddr, 'link-local')
- elif daddr == c.host or daddr not in c.network:
+ elif daddr == c.server or daddr not in c.network:
print('TRACE INBOUND ', saddr, daddr, packet)
queue_inbound(packet)
elif daddr == relay:
#---------- client ----------
class Client():
- def __init__(self, ip, cs):
+ def __init__(self, ip, cs, pw):
# instance data members
self._ip = ip
self._cs = cs
- self.pw = cfg.get(cs, 'password')
+ self.pw = pw
self._rq = collections.deque() # requests
# self._pq = PacketQueue(...)
# plus from config:
# .max_queue_time
# .max_request_time
# .target_requests_outstanding
+
+ if ip not in c.network:
+ raise ValueError('client %s not in network' % ip)
+
for k in ('max_batch_down','max_queue_time','max_request_time',
'target_requests_outstanding'):
req = cfg.getint(cs, k)
self.__dict__[k] = min(req, limit)
self._pq = PacketQueue(self.max_queue_time)
- def process_arriving_data(self, d):
- for packet in slip.decode(d):
- (saddr, daddr) = packet_addrs(packet)
- if saddr != self._ip:
- raise ValueError('wrong source address %s' % saddr)
- route(packet, saddr, daddr)
-
- def _req_cancel(self, request):
- request.finish()
+ if ip in clients:
+ raise ValueError('multiple client cfg sections for %s' % ip)
+ clients[ip] = self
+
+ def process_arriving_data(self, d):
+ for packet in slip.decode(d):
+ (saddr, daddr) = packet_addrs(packet)
+ if saddr != self._ip:
+ raise ValueError('wrong source address %s' % saddr)
+ route(packet, saddr, daddr)
+
+ def _req_cancel(self, request):
+ request.finish()
+
+ def _req_error(self, err, request):
+ self._req_cancel(request)
+
+ def queue_outbound(self, packet):
+ self._pq.append(packet)
+
+ def http_request(self, request):
+ request.setHeader('Content-Type','application/octet-stream')
+ reactor.callLater(self.max_request_time, self._req_cancel, request)
+ request.notifyFinish().addErrback(self._req_error, request)
+ self._rq.append(request)
+ self._check_outbound()
+
+ def _check_outbound(self):
+ while True:
+ try: request = self._rq[0]
+ except IndexError: request = None
+ if request and request.finished:
+ self._rq.popleft()
+ continue
+
+ if not self._pq.nonempty():
+ # no packets, oh well
+ continue
+
+ if request is None:
+ # no request
+ break
+
+ # request, and also some non-expired packets
+ while True:
+ packet = self.pq.popleft()
+ if packet is None: break
- def _req_error(self, err, request):
- self._req_cancel(request)
+ encoded = slip.encode(packet)
+
+ if request.sentLength > 0:
+ if (request.sentLength + len(slip.delimiter)
+ + len(encoded) > self.max_batch_down):
+ break
+ request.write(slip.delimiter)
- def queue_outbound(self, packet):
- self._pq.append(packet)
+ request.write(encoded)
+ self._pq.popLeft()
- def http_request(self, request):
- request.setHeader('Content-Type','application/octet-stream')
- reactor.callLater(self.max_request_time, self._req_cancel, request)
- request.notifyFinish().addErrback(self._req_error, request)
- self._rq.append(request)
- self._check_outbound()
+ assert(request.sentLength)
+ self._rq.popLeft()
+ request.finish()
+ # round again, looking for more to do
- def _check_outbound(self):
- while True:
- try: request = self._rq[0]
- except IndexError: request = None
- if request and request.finished:
- self._rq.popleft()
- continue
-
- if not self._pq.nonempty():
- # no packets, oh well
- continue
-
- if request is None:
- # no request
- break
-
- # request, and also some non-expired packets
- while True:
- packet = self.pq.popleft()
- if packet is None: break
-
- encoded = slip.encode(packet)
-
- if request.sentLength > 0:
- if (request.sentLength + len(slip.delimiter)
- + len(encoded) > self.max_batch_down):
- break
- request.write(slip.delimiter)
-
- request.write(encoded)
- self._pq.popLeft()
-
- assert(request.sentLength)
- self._rq.popLeft()
- request.finish()
- # round again, looking for more to do
-
- while len(self._rq) > self.target_requests_outstanding:
- request = self._rq.popleft()
- request.finish()
+ while len(self._rq) > self.target_requests_outstanding:
+ request = self._rq.popleft()
+ request.finish()
class IphttpResource(twisted.web.resource.Resource):
isLeaf = True
def start_http():
resource = IphttpResource()
site = twisted.web.server.Site(resource)
- for addrspec in cfg.get('server','addrs').split():
- try:
- addr = ipaddress.IPv4Address(addrspec)
- endpointfactory = twisted.internet.endpoints.TCP4ServerEndpoint
- except AddressValueError:
- addr = ipaddress.IPv6Address(addrspec)
- endpointfactory = twisted.internet.endpoints.TCP6ServerEndpoint
- ep = endpointfactory(reactor, cfg.getint('server','port'), addr)
+ for sa in c.saddrs:
+ ep = sa.make_endpoint()
crash_on_defer(ep.listen(site))
#---------- config and setup ----------
def process_cfg():
process_cfg_common_always()
-
- c.network = ipnetwork(cfg.get('virtual','network'))
- if c.network.num_addresses < 3 + 2:
- raise ValueError('network needs at least 2^3 addresses')
-
- try:
- c.host = cfg.get('virtual','host')
- except NoOptionError:
- c.host = next(c.network.hosts())
+ process_cfg_server()
+ process_cfg_network()
try:
c.relay = cfg.get('virtual','relay')
except NoOptionError:
for search in c.network.hosts():
- if search == c.host: continue
+ if search == c.server: continue
c.relay = search
break
- for cs in cfg.sections():
- if not (':' in cs or '.' in cs): continue
- ci = ipaddr(cs)
- if ci not in c.network:
- raise ValueError('client %s not in network' % ci)
- if ci in clients:
- raise ValueError('multiple client cfg sections for %s' % ci)
- clients[ci] = Client(ci, cs)
-
- for d, s in (('local', 'host'),
- ('peer','relay'),
- ('rnets','network')):
- try: v = getattr(c, s)
- except KeyError: pass
- setattr(c, d, v)
-
- print(repr(c))
-
- c.ipif_command = cfg.get('server','ipif', vars=c.__dict__)
+ process_cfg_saddrs()
+ process_cfg_clients(Client)
+
+ process_cfg_ipif('server',
+ (('local','server'),
+ ('peer','relay'),
+ ('rnets','network')))
common_startup(defcfg)
process_cfg()
~ian / hippotat.git / commitdiff