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 | ||
b0cfbfce | 15 | clients = { } |
3fba9787 | 16 | |
5da7763e IJ |
17 | #---------- "router" ---------- |
18 | ||
a8827d59 | 19 | def route(packet, iface, saddr, daddr): |
d579a048 | 20 | def lt(dest): |
8c3b6620 | 21 | log_debug(DBG.ROUTE, 'route: %s -> %s: %s' % (saddr,daddr,dest), d=packet) |
84e763c7 | 22 | try: dclient = clients[daddr] |
5da7763e IJ |
23 | except KeyError: dclient = None |
24 | if dclient is not None: | |
d579a048 | 25 | lt('client') |
5da7763e | 26 | dclient.queue_outbound(packet) |
88487243 | 27 | elif daddr == c.server or daddr not in c.network: |
d579a048 | 28 | lt('inbound') |
5da7763e | 29 | queue_inbound(packet) |
e2d41dc1 | 30 | elif daddr == relay: |
d579a048 | 31 | lt('discard relay') |
a8827d59 | 32 | log_discard(packet, iface, saddr, daddr, 'relay') |
5da7763e | 33 | else: |
d579a048 | 34 | lt('discard no-client') |
a8827d59 | 35 | log_discard(packet, iface, saddr, daddr, 'no-client') |
5da7763e | 36 | |
5da7763e | 37 | #---------- client ---------- |
c4b6d990 | 38 | |
ec88b1f1 | 39 | class Client(): |
88487243 | 40 | def __init__(self, ip, cs, pw): |
ec88b1f1 IJ |
41 | # instance data members |
42 | self._ip = ip | |
43 | self._cs = cs | |
88487243 | 44 | self.pw = pw |
0ac316c8 | 45 | self._rq = collections.deque() # requests |
650a3251 | 46 | # self._pq = PacketQueue(...) |
c4b6d990 IJ |
47 | # plus from config: |
48 | # .max_batch_down | |
49 | # .max_queue_time | |
650a3251 | 50 | # .target_requests_outstanding |
88487243 IJ |
51 | |
52 | if ip not in c.network: | |
53 | raise ValueError('client %s not in network' % ip) | |
54 | ||
c7fb640e IJ |
55 | for k in ('max_batch_down', |
56 | 'max_queue_time', | |
57 | 'http_timeout', | |
650a3251 | 58 | 'target_requests_outstanding'): |
ec88b1f1 | 59 | req = cfg.getint(cs, k) |
094ee3a2 | 60 | limit = cfg.getint('limits',k) |
c4b6d990 | 61 | self.__dict__[k] = min(req, limit) |
ca732796 | 62 | |
8718b02c | 63 | self._pq = PacketQueue(str(ip), self.max_queue_time) |
c4b6d990 | 64 | |
88487243 IJ |
65 | if ip in clients: |
66 | raise ValueError('multiple client cfg sections for %s' % ip) | |
67 | clients[ip] = self | |
68 | ||
8c3b6620 IJ |
69 | self._log(DBG.INIT, 'new') |
70 | ||
b68c0739 IJ |
71 | def _log(self, dflag, msg, **kwargs): |
72 | log_debug(dflag, ('client %s: ' % self._ip)+msg, **kwargs) | |
d579a048 | 73 | |
88487243 | 74 | def process_arriving_data(self, d): |
e8fcf3b7 | 75 | self._log(DBG.FLOW, "req data (enc'd)", d=d) |
8718b02c | 76 | if not len(d): return |
88487243 IJ |
77 | for packet in slip.decode(d): |
78 | (saddr, daddr) = packet_addrs(packet) | |
79 | if saddr != self._ip: | |
80 | raise ValueError('wrong source address %s' % saddr) | |
a8827d59 | 81 | route(packet, self._ip, saddr, daddr) |
88487243 IJ |
82 | |
83 | def _req_cancel(self, request): | |
8718b02c | 84 | self._log(DBG.HTTP_CTRL, 'cancel', idof=request) |
88487243 IJ |
85 | request.finish() |
86 | ||
87 | def _req_error(self, err, request): | |
8718b02c | 88 | self._log(DBG.HTTP_CTRL, 'error %s' % err, idof=request) |
88487243 IJ |
89 | self._req_cancel(request) |
90 | ||
91 | def queue_outbound(self, packet): | |
92 | self._pq.append(packet) | |
ca732796 | 93 | self._check_outbound() |
88487243 | 94 | |
7432045d IJ |
95 | def _req_fin(self, dummy, request, cl): |
96 | self._log(DBG.HTTP_CTRL, '_req_fin ' + repr(dummy), idof=request) | |
97 | try: cl.cancel() | |
98 | except twisted.internet.error.AlreadyCalled: pass | |
99 | ||
d579a048 | 100 | def new_request(self, request): |
88487243 | 101 | request.setHeader('Content-Type','application/octet-stream') |
7432045d IJ |
102 | cl = reactor.callLater(self.http_timeout, self._req_cancel, request) |
103 | nf = request.notifyFinish() | |
104 | nf.addErrback(self._req_error, request) | |
105 | nf.addCallback(self._req_fin, request, cl) | |
88487243 IJ |
106 | self._rq.append(request) |
107 | self._check_outbound() | |
108 | ||
3d003cdd IJ |
109 | def _req_write(self, req, d): |
110 | self._log(DBG.HTTP, 'req_write ', idof=req, d=d) | |
111 | req.write(d) | |
112 | ||
88487243 | 113 | def _check_outbound(self): |
8718b02c | 114 | log_debug(DBG.HTTP_CTRL, 'CHKO') |
88487243 IJ |
115 | while True: |
116 | try: request = self._rq[0] | |
117 | except IndexError: request = None | |
118 | if request and request.finished: | |
8c3b6620 | 119 | self._log(DBG.HTTP_CTRL, 'CHKO req finished, discard', idof=request) |
88487243 IJ |
120 | self._rq.popleft() |
121 | continue | |
122 | ||
123 | if not self._pq.nonempty(): | |
124 | # no packets, oh well | |
8c3b6620 | 125 | self._log(DBG.HTTP_CTRL, 'CHKO no packets, OUT-DONE', idof=request) |
d579a048 | 126 | break |
88487243 IJ |
127 | |
128 | if request is None: | |
129 | # no request | |
8c3b6620 | 130 | self._log(DBG.HTTP_CTRL, 'CHKO no request, OUT-DONE', idof=request) |
88487243 IJ |
131 | break |
132 | ||
8c3b6620 | 133 | self._log(DBG.HTTP_CTRL, 'CHKO processing', idof=request) |
88487243 | 134 | # request, and also some non-expired packets |
7b07f0b5 | 135 | self._pq.process((lambda: request.sentLength), |
3d003cdd | 136 | (lambda d: self._req_write(request, d)), |
7b07f0b5 | 137 | self.max_batch_down) |
0ac316c8 | 138 | |
88487243 | 139 | assert(request.sentLength) |
84e763c7 | 140 | self._rq.popleft() |
88487243 | 141 | request.finish() |
8c3b6620 | 142 | self._log(DBG.HTTP, 'complete', idof=request) |
88487243 | 143 | # round again, looking for more to do |
0ac316c8 | 144 | |
88487243 IJ |
145 | while len(self._rq) > self.target_requests_outstanding: |
146 | request = self._rq.popleft() | |
8c3b6620 | 147 | self._log(DBG.HTTP, 'CHKO above target, returning empty', idof=request) |
88487243 | 148 | request.finish() |
650a3251 | 149 | |
d579a048 | 150 | def process_request(request, desca): |
a4e03162 | 151 | # find client, update config, etc. |
5dd3275b | 152 | metadata = request.args[b'm'][0] |
00192d6a | 153 | metadata = metadata.split(b'\r\n') |
ba5630fd IJ |
154 | (ci_s, pw, tro, cto) = metadata[0:4] |
155 | desca['m[0,2:3]'] = [ci_s, tro, cto] | |
a9a369c7 | 156 | ci_s = ci_s.decode('utf-8') |
ba5630fd IJ |
157 | tro = int(tro); desca['tro']= tro |
158 | cto = int(cto); desca['cto']= cto | |
a4e03162 | 159 | ci = ipaddr(ci_s) |
d579a048 | 160 | desca['ci'] = ci |
a4e03162 IJ |
161 | cl = clients[ci] |
162 | if pw != cl.pw: raise ValueError('bad password') | |
b68c0739 | 163 | desca['pwok']=True |
1672ded0 | 164 | |
d579a048 IJ |
165 | if tro != cl.target_requests_outstanding: |
166 | raise ValueError('tro must be %d' % cl.target_requests_outstanding) | |
5da7763e | 167 | |
ba5630fd IJ |
168 | if cto < cl.http_timeout: |
169 | raise ValueError('cto must be >= %d' % cl.http_timeout) | |
170 | ||
d579a048 | 171 | try: |
e8fcf3b7 | 172 | d = request.args[b'd'][0] |
d579a048 | 173 | desca['d'] = d |
19f5f9b5 IJ |
174 | desca['dlen'] = len(d) |
175 | except KeyError: | |
176 | d = b'' | |
177 | desca['dlen'] = None | |
178 | ||
179 | log_http(desca, 'processing', idof=id(request), d=d) | |
5da7763e | 180 | |
6f387df3 IJ |
181 | d = mime_translate(d) |
182 | ||
a4e03162 IJ |
183 | cl.process_arriving_data(d) |
184 | cl.new_request(request) | |
5da7763e | 185 | |
19f5f9b5 | 186 | def log_http(desca, msg, **kwargs): |
8c3b6620 | 187 | try: |
19f5f9b5 | 188 | kwargs['d'] = desca['d'] |
8c3b6620 IJ |
189 | del desca['d'] |
190 | except KeyError: | |
19f5f9b5 IJ |
191 | pass |
192 | log_debug(DBG.HTTP, msg + repr(desca), **kwargs) | |
8c3b6620 | 193 | |
a4e03162 IJ |
194 | class IphttpResource(twisted.web.resource.Resource): |
195 | isLeaf = True | |
196 | def render_POST(self, request): | |
297b3ebf IJ |
197 | log_debug(DBG.HTTP_FULL, |
198 | 'req recv: ' + repr(request) + ' ' + repr(request.args), | |
199 | idof=id(request)) | |
d579a048 IJ |
200 | desca = {'d': None} |
201 | try: process_request(request, desca) | |
0d10f35f | 202 | except Exception as e: |
68afd97b | 203 | emsg = traceback.format_exc() |
6f387df3 | 204 | log_http(desca, 'RETURNING EXCEPTION ' + emsg) |
0d10f35f IJ |
205 | request.setHeader('Content-Type','text/plain; charset="utf-8"') |
206 | request.setResponseCode(400) | |
a9a369c7 | 207 | return (emsg + ' # ' + repr(desca) + '\r\n').encode('utf-8') |
19f5f9b5 | 208 | log_debug(DBG.HTTP_CTRL, '...', idof=id(request)) |
d579a048 | 209 | return NOT_DONE_YET |
84f2d011 | 210 | |
8e279651 | 211 | def render_GET(self, request): |
d579a048 | 212 | log_debug(DBG.HTTP, 'GET request') |
040ff511 | 213 | return b'<html><body>hippotat</body></html>' |
8e279651 | 214 | |
5da7763e IJ |
215 | def start_http(): |
216 | resource = IphttpResource() | |
b11c6e7a | 217 | site = twisted.web.server.Site(resource) |
88487243 IJ |
218 | for sa in c.saddrs: |
219 | ep = sa.make_endpoint() | |
b11c6e7a | 220 | crash_on_defer(ep.listen(site)) |
d579a048 | 221 | log_debug(DBG.INIT, 'listening on %s' % sa) |
5da7763e IJ |
222 | |
223 | #---------- config and setup ---------- | |
224 | ||
c7fb640e IJ |
225 | def process_cfg(putative_servers, putative_clients): |
226 | c = ConfigResults() | |
227 | c.server = cfg.get('SERVER','server') | |
228 | ||
229 | process_cfg_common(c, c.server) | |
230 | process_cfg_saddrs(c, c.server) | |
231 | process_cfg_vnetwork(c, c.server) | |
232 | process_cfg_vaddr(c, c.server) | |
233 | ||
234 | for (ci,cs) in putative_clients.items(): | |
235 | cc = ConfigResults() | |
236 | sections = cfg_process_client_common(cc,c.server,cs,ci): | |
237 | if not sections: continue | |
238 | cfg_process_client_limited(cc,c.server,sections, 'max_batch_down') | |
239 | cfg_process_client_limited(cc,c.server,sections, 'max_queue_time') | |
e75e9c17 IJ |
240 | |
241 | try: | |
c7fb640e | 242 | c.relay = cfg.get(c.server, 'relay') |
e2d41dc1 | 243 | except NoOptionError: |
87a7c0c7 | 244 | for search in c.network.hosts(): |
88487243 | 245 | if search == c.server: continue |
87a7c0c7 | 246 | c.relay = search |
e75e9c17 | 247 | break |
3fba9787 | 248 | |
c7fb640e IJ |
249 | process_cfg_ipif(c, |
250 | [c.server, 'DEFAULT'], | |
251 | (('local','vaddr'), | |
252 | ('peer', 'vrelay'), | |
253 | ('rnets','vnetwork'))) | |
5bae5ba3 | 254 | |
5510890e | 255 | common_startup(process_cfg) |
6f387df3 | 256 | start_ipif(c.ipif_command, (lambda p,s,d: route(p,"[ipif]",s,d))) |
87a7c0c7 | 257 | start_http() |
ae7c7784 | 258 | common_run() |