-#!/usr/bin/python2
+#!/usr/bin/python3
-from twisted.web.server import Site
-from twisted.web.resource import Resource
+from hippotat import *
+
+import os
+
+import twisted.internet
from twisted.web.server import NOT_DONE_YET
-from twisted.internet import reactor
-import ConfigParser
-import ipaddress
+#import twisted.web.server import Site
+#from twisted.web.resource import Resource
import syslog
clients = { }
-def ipaddress(input):
- try:
- r = ipaddress.IPv4Address(input)
- except AddressValueError:
- r = ipaddress.IPv6Address(input)
- return r
+#---------- "router" ----------
-def ipnetwork(input):
- try:
- r = ipaddress.IPv4Network(input)
- except NetworkValueError:
- r = ipaddress.IPv6Network(input)
- return r
-
-defcfg = u'''
-[default]
-max_batch_down: 65536
-max_queue_time: 10
-max_request_time: 54
-
-[global]
-max_batch_down: 262144
-max_queue_time: 121
-max_request_time: 121
-'''
-
-def route(packet. daddr):
- try: client = clients[daddr]
+def route(packet, saddr, daddr):
+ def lt(dest):
+ log_data(DBG.ROUTE, packet, 'route: %s -> %s: %s' % (saddr,daddr,dest))
+ try: dclient = clients[daddr]
except KeyError: dclient = None
if dclient is not None:
- dclient.queue_outbound_data(packet)
- else if daddr = server or daddr not in network:
- queue_inbound_data(packet)
+ lt('client')
+ dclient.queue_outbound(packet)
+ elif daddr == c.server or daddr not in c.network:
+ lt('inbound')
+ queue_inbound(packet)
+ elif daddr == relay:
+ lt('discard relay')
+ log_discard(packet, saddr, daddr, 'relay')
else:
- syslog.syslog(syslog.LOG_DEBUG, 'no client for %s' % daddr)
+ lt('discard no-client')
+ log_discard(packet, saddr, daddr, 'no-client')
+
+#---------- 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_batch_down
# .max_queue_time
# .max_request_time
- for k in ('max_batch_down','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)
- limit = cfg.getint('global',k)
+ limit = cfg.getint('limits',k)
self.__dict__[k] = min(req, limit)
- def process_arriving_data(self, d):
- for packet in slip_decode(d):
- (saddr, daddr) = ip_64_addrs(packet)
- if saddr != self._ip:
- raise ValueError('wrong source address %s' % saddr)
- route(packet, daddr)
+ self._pq = PacketQueue(self.max_queue_time)
+
+ if ip in clients:
+ raise ValueError('multiple client cfg sections for %s' % ip)
+ clients[ip] = self
+
+ log_debug('DBG.INIT', 'new client %s' % self)
+
+ def process_arriving_data(self, d):
+ log_data(DBG.FLOW, d, 'client req data: %s' % saddr=self._ip)
+ 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):
+ log_httpreq(DBG.HTTPCTRL, request, 'cancel')
+ request.finish()
+
+ def _req_error(self, err, request):
+ log_httpreq(DBG.HTTPCTRL, request, 'error %s' % err)
+ self._req_cancel(request)
+
+ def queue_outbound(self, packet):
+ self._pq.append(packet)
+ self._check_outbound()
+
+ def new_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):
+ log_httpreq(DBG.HTTPCTRL, None, 'CHKO')
+ while True:
+ try: request = self._rq[0]
+ except IndexError: request = None
+ if request and request.finished:
+ log_httpreq(DBG.HTTP_CTRL, request, 'CHKO request finished, discard')
+ self._rq.popleft()
+ continue
+
+ if not self._pq.nonempty():
+ # no packets, oh well
+ log_httpreq(DBG.HTTP_CTRL, request, 'CHKO no packets, OUT-DONE')
+ break
+
+ if request is None:
+ # no request
+ log_httpreq(DBG.HTTP_CTRL, request, 'CHKO no request, OUT-DONE')
+ break
+
+ log_httpreq(DBG.HTTP_CTRL, request, 'CHKO processing')
+ # request, and also some non-expired packets
+ self._pq.process((lambda: request.sentLength),
+ request.write,
+ self.max_batch_down)
+
+ assert(request.sentLength)
+ self._rq.popleft()
+ request.finish()
+ log_httpreq(DBG.HTTP, request, 'complete')
+ # round again, looking for more to do
- def _req_cancel(self, request):
+ while len(self._rq) > self.target_requests_outstanding:
+ request = self._rq.popleft()
+ log_httpreq(DBG.HTTP, request, 'CHKO above target, returning empty')
request.finish()
- def _req_error(self, err, request):
- self._req_cancel(request)
+def process_request(request, desca):
+ # find client, update config, etc.
+ metadata = request.args['m']
+ metadata = metadata.split(b'\n')
+ (ci_s, pw, tro) = metadata.split(b'\n')[0:3]
+ desca['m'] = [ci_s, tro]
+ ci = ipaddr(ci_s)
+ desca['ci'] = ci
+ cl = clients[ci]
+ if pw != cl.pw: raise ValueError('bad password')
+ desca['pwok'=True]
+
+ if tro != cl.target_requests_outstanding:
+ raise ValueError('tro must be %d' % cl.target_requests_outstanding)
+
+ try:
+ d = request.args['d']
+ desca['d'] = d
+ except KeyError: d = ''
- 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)
+ cl.process_arriving_data(d)
+ cl.new_request(request)
+class IphttpResource(twisted.web.resource.Resource):
+ isLeaf = True
+ def render_POST(self, request):
+ desca = {'d': None}
+ try: process_request(request, desca)
+ except Exception as e:
+ emsg = str(e).encode('utf-8')
+ log_http(desca, 'EXCEPTION ' + emsg)
+ request.setHeader('Content-Type','text/plain; charset="utf-8"')
+ request.setResponseCode(400)
+ return emsg
+ log_http(desca, '... [%s]' % id(request))
+ return NOT_DONE_YET
+
+ def render_GET(self, request):
+ log_debug(DBG.HTTP, 'GET request')
+ return b'<html><body>hippotat</body></html>'
+
+def start_http():
+ resource = IphttpResource()
+ site = twisted.web.server.Site(resource)
+ for sa in c.saddrs:
+ ep = sa.make_endpoint()
+ crash_on_defer(ep.listen(site))
+ log_debug(DBG.INIT, 'listening on %s' % sa)
+
+#---------- config and setup ----------
+
def process_cfg():
- global network
- global ourself
+ process_cfg_common_always()
+ process_cfg_server()
+ process_cfg_network()
- network = ipnetwork(cfg.get('virtual','network'))
try:
- ourself = cfg.get('virtual','server')
- except ConfigParser.NoOptionError:
- ourself = network.hosts().next()
-
- for cs in cfg.sections():
- if not (':' in cs or '.' in cs): continue
- ci = ipaddress(cs)
- if ci not in 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)
-
-class FormPage(Resource):
- def render_POST(self, request):
- # find client, update config, etc.
- ci = ipaddress(request.args['i'])
- c = clients[ci]
- pw = request.args['pw']
- if pw != c.pw: raise ValueError('bad password')
-
- # update config
- for r, w in (('mbd', 'max_batch_down'),
- ('mqt', 'max_queue_time'),
- ('mrt', 'max_request_time')):
- try: v = request.args[r]
- except KeyError: continue
- v = int(v)
- c.__dict__[w] = v
-
- try: d = request.args['d']
- except KeyError: d = ''
-
- c.process_arriving_data(d)
- c.new_request(request)
+ c.relay = cfg.get('virtual','relay')
+ except NoOptionError:
+ for search in c.network.hosts():
+ if search == c.server: continue
+ c.relay = search
+ break
+
+ process_cfg_saddrs()
+ process_cfg_clients(Client)
+
+ process_cfg_ipif('server',
+ (('local','server'),
+ ('peer', 'relay'),
+ ('rnets','network')))
+
+common_startup()
+process_cfg()
+start_ipif(c.ipif_command, route)
+start_http()
+common_run()
~ian / hippotat.git / blobdiff