Commit | Line | Data |
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094ee3a2 | 1 | #!/usr/bin/python3 |
3fba9787 | 2 | |
37ab4cdc | 3 | from hippotat import * |
aa663282 | 4 | |
e2d41dc1 IJ |
5 | import os |
6 | ||
e2d41dc1 | 7 | import twisted.internet |
e2d41dc1 | 8 | from twisted.web.server import NOT_DONE_YET |
e2d41dc1 | 9 | |
5da7763e IJ |
10 | #import twisted.web.server import Site |
11 | #from twisted.web.resource import Resource | |
3fba9787 | 12 | |
c4b6d990 IJ |
13 | import syslog |
14 | ||
68afd97b IJ |
15 | import traceback |
16 | ||
b0cfbfce | 17 | clients = { } |
3fba9787 | 18 | |
5da7763e IJ |
19 | #---------- "router" ---------- |
20 | ||
a8827d59 | 21 | def route(packet, iface, saddr, daddr): |
d579a048 | 22 | def lt(dest): |
8c3b6620 | 23 | log_debug(DBG.ROUTE, 'route: %s -> %s: %s' % (saddr,daddr,dest), d=packet) |
84e763c7 | 24 | try: dclient = clients[daddr] |
5da7763e IJ |
25 | except KeyError: dclient = None |
26 | if dclient is not None: | |
d579a048 | 27 | lt('client') |
5da7763e | 28 | dclient.queue_outbound(packet) |
88487243 | 29 | elif daddr == c.server or daddr not in c.network: |
d579a048 | 30 | lt('inbound') |
5da7763e | 31 | queue_inbound(packet) |
e2d41dc1 | 32 | elif daddr == relay: |
d579a048 | 33 | lt('discard relay') |
a8827d59 | 34 | log_discard(packet, iface, saddr, daddr, 'relay') |
5da7763e | 35 | else: |
d579a048 | 36 | lt('discard no-client') |
a8827d59 | 37 | log_discard(packet, iface, saddr, daddr, 'no-client') |
5da7763e | 38 | |
5da7763e | 39 | #---------- client ---------- |
c4b6d990 | 40 | |
ec88b1f1 | 41 | class Client(): |
88487243 | 42 | def __init__(self, ip, cs, pw): |
ec88b1f1 IJ |
43 | # instance data members |
44 | self._ip = ip | |
45 | self._cs = cs | |
88487243 | 46 | self.pw = pw |
0ac316c8 | 47 | self._rq = collections.deque() # requests |
650a3251 | 48 | # self._pq = PacketQueue(...) |
c4b6d990 IJ |
49 | # plus from config: |
50 | # .max_batch_down | |
51 | # .max_queue_time | |
52 | # .max_request_time | |
650a3251 | 53 | # .target_requests_outstanding |
88487243 IJ |
54 | |
55 | if ip not in c.network: | |
56 | raise ValueError('client %s not in network' % ip) | |
57 | ||
650a3251 IJ |
58 | for k in ('max_batch_down','max_queue_time','max_request_time', |
59 | 'target_requests_outstanding'): | |
ec88b1f1 | 60 | req = cfg.getint(cs, k) |
094ee3a2 | 61 | limit = cfg.getint('limits',k) |
c4b6d990 | 62 | self.__dict__[k] = min(req, limit) |
ca732796 | 63 | |
8718b02c | 64 | self._pq = PacketQueue(str(ip), self.max_queue_time) |
c4b6d990 | 65 | |
88487243 IJ |
66 | if ip in clients: |
67 | raise ValueError('multiple client cfg sections for %s' % ip) | |
68 | clients[ip] = self | |
69 | ||
8c3b6620 IJ |
70 | self._log(DBG.INIT, 'new') |
71 | ||
b68c0739 IJ |
72 | def _log(self, dflag, msg, **kwargs): |
73 | log_debug(dflag, ('client %s: ' % self._ip)+msg, **kwargs) | |
d579a048 | 74 | |
88487243 | 75 | def process_arriving_data(self, d): |
e8fcf3b7 | 76 | self._log(DBG.FLOW, "req data (enc'd)", d=d) |
8718b02c | 77 | if not len(d): return |
88487243 IJ |
78 | for packet in slip.decode(d): |
79 | (saddr, daddr) = packet_addrs(packet) | |
80 | if saddr != self._ip: | |
81 | raise ValueError('wrong source address %s' % saddr) | |
a8827d59 | 82 | route(packet, self._ip, saddr, daddr) |
88487243 IJ |
83 | |
84 | def _req_cancel(self, request): | |
8718b02c | 85 | self._log(DBG.HTTP_CTRL, 'cancel', idof=request) |
88487243 IJ |
86 | request.finish() |
87 | ||
88 | def _req_error(self, err, request): | |
8718b02c | 89 | self._log(DBG.HTTP_CTRL, 'error %s' % err, idof=request) |
88487243 IJ |
90 | self._req_cancel(request) |
91 | ||
92 | def queue_outbound(self, packet): | |
93 | self._pq.append(packet) | |
ca732796 | 94 | self._check_outbound() |
88487243 | 95 | |
d579a048 | 96 | def new_request(self, request): |
88487243 IJ |
97 | request.setHeader('Content-Type','application/octet-stream') |
98 | reactor.callLater(self.max_request_time, self._req_cancel, request) | |
99 | request.notifyFinish().addErrback(self._req_error, request) | |
100 | self._rq.append(request) | |
101 | self._check_outbound() | |
102 | ||
103 | def _check_outbound(self): | |
8718b02c | 104 | log_debug(DBG.HTTP_CTRL, 'CHKO') |
88487243 IJ |
105 | while True: |
106 | try: request = self._rq[0] | |
107 | except IndexError: request = None | |
108 | if request and request.finished: | |
8c3b6620 | 109 | self._log(DBG.HTTP_CTRL, 'CHKO req finished, discard', idof=request) |
88487243 IJ |
110 | self._rq.popleft() |
111 | continue | |
112 | ||
113 | if not self._pq.nonempty(): | |
114 | # no packets, oh well | |
8c3b6620 | 115 | self._log(DBG.HTTP_CTRL, 'CHKO no packets, OUT-DONE', idof=request) |
d579a048 | 116 | break |
88487243 IJ |
117 | |
118 | if request is None: | |
119 | # no request | |
8c3b6620 | 120 | self._log(DBG.HTTP_CTRL, 'CHKO no request, OUT-DONE', idof=request) |
88487243 IJ |
121 | break |
122 | ||
8c3b6620 | 123 | self._log(DBG.HTTP_CTRL, 'CHKO processing', idof=request) |
88487243 | 124 | # request, and also some non-expired packets |
7b07f0b5 IJ |
125 | self._pq.process((lambda: request.sentLength), |
126 | request.write, | |
127 | self.max_batch_down) | |
0ac316c8 | 128 | |
88487243 | 129 | assert(request.sentLength) |
84e763c7 | 130 | self._rq.popleft() |
88487243 | 131 | request.finish() |
8c3b6620 | 132 | self._log(DBG.HTTP, 'complete', idof=request) |
88487243 | 133 | # round again, looking for more to do |
0ac316c8 | 134 | |
88487243 IJ |
135 | while len(self._rq) > self.target_requests_outstanding: |
136 | request = self._rq.popleft() | |
8c3b6620 | 137 | self._log(DBG.HTTP, 'CHKO above target, returning empty', idof=request) |
88487243 | 138 | request.finish() |
650a3251 | 139 | |
d579a048 | 140 | def process_request(request, desca): |
a4e03162 | 141 | # find client, update config, etc. |
a9a369c7 | 142 | metadata = request.args[b'm'][0] |
00192d6a IJ |
143 | metadata = metadata.split(b'\r\n') |
144 | (ci_s, pw, tro) = metadata[0:3] | |
145 | desca['m[0,2]'] = [ci_s, tro] | |
a9a369c7 IJ |
146 | ci_s = ci_s.decode('utf-8') |
147 | tro = int(tro) | |
148 | desca['tro']= tro | |
a4e03162 | 149 | ci = ipaddr(ci_s) |
d579a048 | 150 | desca['ci'] = ci |
a4e03162 IJ |
151 | cl = clients[ci] |
152 | if pw != cl.pw: raise ValueError('bad password') | |
b68c0739 | 153 | desca['pwok']=True |
1672ded0 | 154 | |
d579a048 IJ |
155 | if tro != cl.target_requests_outstanding: |
156 | raise ValueError('tro must be %d' % cl.target_requests_outstanding) | |
5da7763e | 157 | |
d579a048 | 158 | try: |
e8fcf3b7 | 159 | d = request.args[b'd'][0] |
d579a048 | 160 | desca['d'] = d |
8718b02c | 161 | except KeyError: d = b'' |
5da7763e | 162 | |
a4e03162 IJ |
163 | cl.process_arriving_data(d) |
164 | cl.new_request(request) | |
5da7763e | 165 | |
8c3b6620 IJ |
166 | def log_http(desca, msg): |
167 | try: | |
168 | d = desca['d'] | |
169 | del desca['d'] | |
170 | except KeyError: | |
171 | d = None | |
172 | log_debug(DBG.HTTP, msg + repr(desca), d=d) | |
173 | ||
a4e03162 IJ |
174 | class IphttpResource(twisted.web.resource.Resource): |
175 | isLeaf = True | |
176 | def render_POST(self, request): | |
297b3ebf IJ |
177 | log_debug(DBG.HTTP_FULL, |
178 | 'req recv: ' + repr(request) + ' ' + repr(request.args), | |
179 | idof=id(request)) | |
d579a048 IJ |
180 | desca = {'d': None} |
181 | try: process_request(request, desca) | |
0d10f35f | 182 | except Exception as e: |
68afd97b | 183 | emsg = traceback.format_exc() |
d579a048 | 184 | log_http(desca, 'EXCEPTION ' + emsg) |
0d10f35f IJ |
185 | request.setHeader('Content-Type','text/plain; charset="utf-8"') |
186 | request.setResponseCode(400) | |
a9a369c7 | 187 | return (emsg + ' # ' + repr(desca) + '\r\n').encode('utf-8') |
d579a048 IJ |
188 | log_http(desca, '... [%s]' % id(request)) |
189 | return NOT_DONE_YET | |
84f2d011 | 190 | |
8e279651 | 191 | def render_GET(self, request): |
d579a048 | 192 | log_debug(DBG.HTTP, 'GET request') |
040ff511 | 193 | return b'<html><body>hippotat</body></html>' |
8e279651 | 194 | |
5da7763e IJ |
195 | def start_http(): |
196 | resource = IphttpResource() | |
b11c6e7a | 197 | site = twisted.web.server.Site(resource) |
88487243 IJ |
198 | for sa in c.saddrs: |
199 | ep = sa.make_endpoint() | |
b11c6e7a | 200 | crash_on_defer(ep.listen(site)) |
d579a048 | 201 | log_debug(DBG.INIT, 'listening on %s' % sa) |
5da7763e IJ |
202 | |
203 | #---------- config and setup ---------- | |
204 | ||
3fba9787 | 205 | def process_cfg(): |
87a7c0c7 | 206 | process_cfg_common_always() |
88487243 IJ |
207 | process_cfg_server() |
208 | process_cfg_network() | |
e75e9c17 IJ |
209 | |
210 | try: | |
87a7c0c7 | 211 | c.relay = cfg.get('virtual','relay') |
e2d41dc1 | 212 | except NoOptionError: |
87a7c0c7 | 213 | for search in c.network.hosts(): |
88487243 | 214 | if search == c.server: continue |
87a7c0c7 | 215 | c.relay = search |
e75e9c17 | 216 | break |
3fba9787 | 217 | |
88487243 IJ |
218 | process_cfg_saddrs() |
219 | process_cfg_clients(Client) | |
220 | ||
221 | process_cfg_ipif('server', | |
222 | (('local','server'), | |
034284c3 | 223 | ('peer', 'relay'), |
88487243 | 224 | ('rnets','network'))) |
5bae5ba3 | 225 | |
1321ad5f | 226 | common_startup() |
87a7c0c7 IJ |
227 | process_cfg() |
228 | start_ipif(c.ipif_command, route) | |
229 | start_http() | |
ae7c7784 | 230 | common_run() |