Commit | Line | Data |
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094ee3a2 | 1 | #!/usr/bin/python3 |
3fba9787 | 2 | |
5a37bac8 | 3 | from hippotatlib import * |
aa663282 | 4 | |
e2d41dc1 | 5 | import os |
4a780703 IJ |
6 | import tempfile |
7 | import atexit | |
8 | import shutil | |
e2d41dc1 | 9 | |
e2d41dc1 | 10 | import twisted.internet |
e2d41dc1 | 11 | from twisted.web.server import NOT_DONE_YET |
e2d41dc1 | 12 | |
99e6411f IJ |
13 | import twisted.web.static |
14 | ||
4a780703 IJ |
15 | import hippotatlib.ownsource |
16 | from hippotatlib.ownsource import SourceShipmentPreparer | |
17 | ||
5da7763e IJ |
18 | #import twisted.web.server import Site |
19 | #from twisted.web.resource import Resource | |
3fba9787 | 20 | |
c4b6d990 IJ |
21 | import syslog |
22 | ||
4a780703 IJ |
23 | cleanups = [ ] |
24 | ||
b0cfbfce | 25 | clients = { } |
3fba9787 | 26 | |
5da7763e IJ |
27 | #---------- "router" ---------- |
28 | ||
a8827d59 | 29 | def route(packet, iface, saddr, daddr): |
d579a048 | 30 | def lt(dest): |
8c3b6620 | 31 | log_debug(DBG.ROUTE, 'route: %s -> %s: %s' % (saddr,daddr,dest), d=packet) |
84e763c7 | 32 | try: dclient = clients[daddr] |
5da7763e IJ |
33 | except KeyError: dclient = None |
34 | if dclient is not None: | |
d579a048 | 35 | lt('client') |
5da7763e | 36 | dclient.queue_outbound(packet) |
8d374606 | 37 | elif daddr == c.vaddr or daddr not in c.vnetwork: |
d579a048 | 38 | lt('inbound') |
909e0ff3 | 39 | queue_inbound(ipif, packet) |
74934d63 | 40 | elif daddr == c.relay: |
d579a048 | 41 | lt('discard relay') |
a8827d59 | 42 | log_discard(packet, iface, saddr, daddr, 'relay') |
5da7763e | 43 | else: |
d579a048 | 44 | lt('discard no-client') |
a8827d59 | 45 | log_discard(packet, iface, saddr, daddr, 'no-client') |
5da7763e | 46 | |
5da7763e | 47 | #---------- client ---------- |
c4b6d990 | 48 | |
ec88b1f1 | 49 | class Client(): |
8d374606 | 50 | def __init__(self, ip, cc): |
ec88b1f1 IJ |
51 | # instance data members |
52 | self._ip = ip | |
8d374606 | 53 | self.cc = cc |
0ac316c8 | 54 | self._rq = collections.deque() # requests |
74934d63 | 55 | self._pq = PacketQueue(str(ip), self.cc.max_queue_time) |
88487243 | 56 | |
8d374606 | 57 | if ip not in c.vnetwork: |
c7f134ce | 58 | raise ValueError('client %s not in vnetwork' % ip) |
88487243 | 59 | |
88487243 IJ |
60 | if ip in clients: |
61 | raise ValueError('multiple client cfg sections for %s' % ip) | |
62 | clients[ip] = self | |
63 | ||
8c3b6620 IJ |
64 | self._log(DBG.INIT, 'new') |
65 | ||
b68c0739 IJ |
66 | def _log(self, dflag, msg, **kwargs): |
67 | log_debug(dflag, ('client %s: ' % self._ip)+msg, **kwargs) | |
d579a048 | 68 | |
88487243 | 69 | def process_arriving_data(self, d): |
e8fcf3b7 | 70 | self._log(DBG.FLOW, "req data (enc'd)", d=d) |
8718b02c | 71 | if not len(d): return |
88487243 IJ |
72 | for packet in slip.decode(d): |
73 | (saddr, daddr) = packet_addrs(packet) | |
74 | if saddr != self._ip: | |
75 | raise ValueError('wrong source address %s' % saddr) | |
a8827d59 | 76 | route(packet, self._ip, saddr, daddr) |
88487243 IJ |
77 | |
78 | def _req_cancel(self, request): | |
8718b02c | 79 | self._log(DBG.HTTP_CTRL, 'cancel', idof=request) |
88487243 IJ |
80 | request.finish() |
81 | ||
82 | def _req_error(self, err, request): | |
8718b02c | 83 | self._log(DBG.HTTP_CTRL, 'error %s' % err, idof=request) |
88487243 IJ |
84 | self._req_cancel(request) |
85 | ||
86 | def queue_outbound(self, packet): | |
87 | self._pq.append(packet) | |
ca732796 | 88 | self._check_outbound() |
88487243 | 89 | |
7432045d IJ |
90 | def _req_fin(self, dummy, request, cl): |
91 | self._log(DBG.HTTP_CTRL, '_req_fin ' + repr(dummy), idof=request) | |
92 | try: cl.cancel() | |
93 | except twisted.internet.error.AlreadyCalled: pass | |
94 | ||
d579a048 | 95 | def new_request(self, request): |
88487243 | 96 | request.setHeader('Content-Type','application/octet-stream') |
74934d63 | 97 | cl = reactor.callLater(self.cc.http_timeout, self._req_cancel, request) |
7432045d IJ |
98 | nf = request.notifyFinish() |
99 | nf.addErrback(self._req_error, request) | |
100 | nf.addCallback(self._req_fin, request, cl) | |
88487243 IJ |
101 | self._rq.append(request) |
102 | self._check_outbound() | |
103 | ||
3d003cdd IJ |
104 | def _req_write(self, req, d): |
105 | self._log(DBG.HTTP, 'req_write ', idof=req, d=d) | |
106 | req.write(d) | |
107 | ||
88487243 | 108 | def _check_outbound(self): |
8718b02c | 109 | log_debug(DBG.HTTP_CTRL, 'CHKO') |
88487243 IJ |
110 | while True: |
111 | try: request = self._rq[0] | |
112 | except IndexError: request = None | |
113 | if request and request.finished: | |
8c3b6620 | 114 | self._log(DBG.HTTP_CTRL, 'CHKO req finished, discard', idof=request) |
88487243 IJ |
115 | self._rq.popleft() |
116 | continue | |
117 | ||
118 | if not self._pq.nonempty(): | |
119 | # no packets, oh well | |
8c3b6620 | 120 | self._log(DBG.HTTP_CTRL, 'CHKO no packets, OUT-DONE', idof=request) |
d579a048 | 121 | break |
88487243 IJ |
122 | |
123 | if request is None: | |
124 | # no request | |
8c3b6620 | 125 | self._log(DBG.HTTP_CTRL, 'CHKO no request, OUT-DONE', idof=request) |
88487243 IJ |
126 | break |
127 | ||
8c3b6620 | 128 | self._log(DBG.HTTP_CTRL, 'CHKO processing', idof=request) |
88487243 | 129 | # request, and also some non-expired packets |
7b07f0b5 | 130 | self._pq.process((lambda: request.sentLength), |
3d003cdd | 131 | (lambda d: self._req_write(request, d)), |
74934d63 | 132 | self.cc.max_batch_down) |
0ac316c8 | 133 | |
88487243 | 134 | assert(request.sentLength) |
84e763c7 | 135 | self._rq.popleft() |
88487243 | 136 | request.finish() |
8c3b6620 | 137 | self._log(DBG.HTTP, 'complete', idof=request) |
88487243 | 138 | # round again, looking for more to do |
0ac316c8 | 139 | |
74934d63 | 140 | while len(self._rq) > self.cc.target_requests_outstanding: |
88487243 | 141 | request = self._rq.popleft() |
8c3b6620 | 142 | self._log(DBG.HTTP, 'CHKO above target, returning empty', idof=request) |
88487243 | 143 | request.finish() |
650a3251 | 144 | |
d579a048 | 145 | def process_request(request, desca): |
a4e03162 | 146 | # find client, update config, etc. |
5dd3275b | 147 | metadata = request.args[b'm'][0] |
00192d6a | 148 | metadata = metadata.split(b'\r\n') |
ba5630fd IJ |
149 | (ci_s, pw, tro, cto) = metadata[0:4] |
150 | desca['m[0,2:3]'] = [ci_s, tro, cto] | |
a9a369c7 | 151 | ci_s = ci_s.decode('utf-8') |
ba5630fd IJ |
152 | tro = int(tro); desca['tro']= tro |
153 | cto = int(cto); desca['cto']= cto | |
a4e03162 | 154 | ci = ipaddr(ci_s) |
d579a048 | 155 | desca['ci'] = ci |
a4e03162 | 156 | cl = clients[ci] |
74934d63 | 157 | if pw != cl.cc.password: raise ValueError('bad password') |
b68c0739 | 158 | desca['pwok']=True |
1672ded0 | 159 | |
74934d63 IJ |
160 | if tro != cl.cc.target_requests_outstanding: |
161 | raise ValueError('tro must be %d' % cl.cc.target_requests_outstanding) | |
5da7763e | 162 | |
74934d63 IJ |
163 | if cto < cl.cc.http_timeout: |
164 | raise ValueError('cto must be >= %d' % cl.cc.http_timeout) | |
ba5630fd | 165 | |
d579a048 | 166 | try: |
e8fcf3b7 | 167 | d = request.args[b'd'][0] |
d579a048 | 168 | desca['d'] = d |
19f5f9b5 IJ |
169 | desca['dlen'] = len(d) |
170 | except KeyError: | |
171 | d = b'' | |
172 | desca['dlen'] = None | |
173 | ||
174 | log_http(desca, 'processing', idof=id(request), d=d) | |
5da7763e | 175 | |
6f387df3 IJ |
176 | d = mime_translate(d) |
177 | ||
a4e03162 IJ |
178 | cl.process_arriving_data(d) |
179 | cl.new_request(request) | |
5da7763e | 180 | |
19f5f9b5 | 181 | def log_http(desca, msg, **kwargs): |
8c3b6620 | 182 | try: |
19f5f9b5 | 183 | kwargs['d'] = desca['d'] |
8c3b6620 IJ |
184 | del desca['d'] |
185 | except KeyError: | |
19f5f9b5 IJ |
186 | pass |
187 | log_debug(DBG.HTTP, msg + repr(desca), **kwargs) | |
8c3b6620 | 188 | |
eb113b2c IJ |
189 | class NotStupidResource(twisted.web.resource.Resource): |
190 | # why this is not the default is a mystery! | |
191 | def getChild(self, name, request): | |
192 | if name == b'': return self | |
193 | else: return twisted.web.resource.Resource.getChild(name, request) | |
194 | ||
195 | class IphttpResource(NotStupidResource): | |
a4e03162 | 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') |
99e6411f IJ |
213 | return b''' |
214 | <html><body> | |
215 | hippotat | |
216 | <p> | |
217 | <a href="source">source</a> available | |
218 | </body></html> | |
219 | ''' | |
220 | ||
221 | class SourceResource(twisted.web.static.File): | |
4a780703 IJ |
222 | def __init__(self): |
223 | td = tempfile.mkdtemp() | |
224 | ||
225 | def cleanup(): | |
226 | try: shutil.rmtree(td) | |
227 | except FileNotFoundError: pass | |
228 | ||
229 | cleanups.append(cleanup) | |
230 | ||
231 | self._ssp = SourceShipmentPreparer(td) | |
232 | self._ssp.logger = self.log | |
233 | self._ssp.generate() | |
234 | ||
99e6411f IJ |
235 | super().__init__(self._ssp.output_path) |
236 | ||
4a780703 IJ |
237 | def log(self, m): |
238 | log_debug(DBG.OWNSOURCE, m) | |
239 | ||
5da7763e IJ |
240 | def start_http(): |
241 | resource = IphttpResource() | |
de2b215e | 242 | resource.putChild(b'source',SourceResource()) |
b11c6e7a | 243 | site = twisted.web.server.Site(resource) |
88487243 IJ |
244 | for sa in c.saddrs: |
245 | ep = sa.make_endpoint() | |
b11c6e7a | 246 | crash_on_defer(ep.listen(site)) |
d579a048 | 247 | log_debug(DBG.INIT, 'listening on %s' % sa) |
5da7763e IJ |
248 | |
249 | #---------- config and setup ---------- | |
4a780703 | 250 | |
c7fb640e | 251 | def process_cfg(putative_servers, putative_clients): |
8d374606 | 252 | global c |
c7fb640e IJ |
253 | c = ConfigResults() |
254 | c.server = cfg.get('SERVER','server') | |
255 | ||
8d374606 IJ |
256 | cfg_process_common(c, c.server) |
257 | cfg_process_saddrs(c, c.server) | |
258 | cfg_process_vnetwork(c, c.server) | |
259 | cfg_process_vaddr(c, c.server) | |
c7fb640e IJ |
260 | |
261 | for (ci,cs) in putative_clients.items(): | |
262 | cc = ConfigResults() | |
74934d63 | 263 | sections = cfg_process_client_common(cc,c.server,cs,ci) |
c7fb640e IJ |
264 | if not sections: continue |
265 | cfg_process_client_limited(cc,c.server,sections, 'max_batch_down') | |
266 | cfg_process_client_limited(cc,c.server,sections, 'max_queue_time') | |
74934d63 | 267 | Client(ci, cc) |
e75e9c17 IJ |
268 | |
269 | try: | |
74934d63 | 270 | c.vrelay = cfg.get(c.server, 'vrelay') |
e2d41dc1 | 271 | except NoOptionError: |
8d374606 IJ |
272 | for search in c.vnetwork.hosts(): |
273 | if search == c.vaddr: continue | |
74934d63 | 274 | c.vrelay = search |
e75e9c17 | 275 | break |
3fba9787 | 276 | |
8d374606 | 277 | cfg_process_ipif(c, |
c7fb640e IJ |
278 | [c.server, 'DEFAULT'], |
279 | (('local','vaddr'), | |
280 | ('peer', 'vrelay'), | |
281 | ('rnets','vnetwork'))) | |
5bae5ba3 | 282 | |
4a780703 IJ |
283 | def catch_termination(): |
284 | def run_cleanups(): | |
285 | for cleanup in cleanups: | |
286 | cleanup() | |
287 | ||
288 | atexit.register(run_cleanups) | |
289 | ||
290 | def signal_handler(name, sig, *args): | |
291 | signal.signal(sig, signal.SIG_DFL) | |
292 | print('exiting due to %s' % name, file=sys.stderr) | |
293 | run_cleanups() | |
294 | os.kill(os.getpid(), sig) | |
295 | raise RuntimeError('did not die due to signal %s !' % name) | |
296 | ||
297 | for sig in (signal.SIGINT, signal.SIGTERM): | |
298 | signal.signal(sig, partial(signal_handler, sig.name)) | |
299 | ||
5510890e | 300 | common_startup(process_cfg) |
4a780703 | 301 | catch_termination() |
909e0ff3 | 302 | ipif = start_ipif(c.ipif_command, (lambda p,s,d: route(p,"[ipif]",s,d))) |
87a7c0c7 | 303 | start_http() |
ae7c7784 | 304 | common_run() |