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) |
8d374606 | 27 | elif daddr == c.vaddr or daddr not in c.vnetwork: |
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(): |
8d374606 | 40 | def __init__(self, ip, cc): |
ec88b1f1 IJ |
41 | # instance data members |
42 | self._ip = ip | |
8d374606 | 43 | self.cc = cc |
0ac316c8 | 44 | self._rq = collections.deque() # requests |
650a3251 | 45 | # self._pq = PacketQueue(...) |
c4b6d990 IJ |
46 | # plus from config: |
47 | # .max_batch_down | |
48 | # .max_queue_time | |
650a3251 | 49 | # .target_requests_outstanding |
88487243 | 50 | |
8d374606 | 51 | if ip not in c.vnetwork: |
c7f134ce | 52 | raise ValueError('client %s not in vnetwork' % ip) |
88487243 | 53 | |
8718b02c | 54 | self._pq = PacketQueue(str(ip), self.max_queue_time) |
c4b6d990 | 55 | |
88487243 IJ |
56 | if ip in clients: |
57 | raise ValueError('multiple client cfg sections for %s' % ip) | |
58 | clients[ip] = self | |
59 | ||
8c3b6620 IJ |
60 | self._log(DBG.INIT, 'new') |
61 | ||
b68c0739 IJ |
62 | def _log(self, dflag, msg, **kwargs): |
63 | log_debug(dflag, ('client %s: ' % self._ip)+msg, **kwargs) | |
d579a048 | 64 | |
88487243 | 65 | def process_arriving_data(self, d): |
e8fcf3b7 | 66 | self._log(DBG.FLOW, "req data (enc'd)", d=d) |
8718b02c | 67 | if not len(d): return |
88487243 IJ |
68 | for packet in slip.decode(d): |
69 | (saddr, daddr) = packet_addrs(packet) | |
70 | if saddr != self._ip: | |
71 | raise ValueError('wrong source address %s' % saddr) | |
a8827d59 | 72 | route(packet, self._ip, saddr, daddr) |
88487243 IJ |
73 | |
74 | def _req_cancel(self, request): | |
8718b02c | 75 | self._log(DBG.HTTP_CTRL, 'cancel', idof=request) |
88487243 IJ |
76 | request.finish() |
77 | ||
78 | def _req_error(self, err, request): | |
8718b02c | 79 | self._log(DBG.HTTP_CTRL, 'error %s' % err, idof=request) |
88487243 IJ |
80 | self._req_cancel(request) |
81 | ||
82 | def queue_outbound(self, packet): | |
83 | self._pq.append(packet) | |
ca732796 | 84 | self._check_outbound() |
88487243 | 85 | |
7432045d IJ |
86 | def _req_fin(self, dummy, request, cl): |
87 | self._log(DBG.HTTP_CTRL, '_req_fin ' + repr(dummy), idof=request) | |
88 | try: cl.cancel() | |
89 | except twisted.internet.error.AlreadyCalled: pass | |
90 | ||
d579a048 | 91 | def new_request(self, request): |
88487243 | 92 | request.setHeader('Content-Type','application/octet-stream') |
7432045d IJ |
93 | cl = reactor.callLater(self.http_timeout, self._req_cancel, request) |
94 | nf = request.notifyFinish() | |
95 | nf.addErrback(self._req_error, request) | |
96 | nf.addCallback(self._req_fin, request, cl) | |
88487243 IJ |
97 | self._rq.append(request) |
98 | self._check_outbound() | |
99 | ||
3d003cdd IJ |
100 | def _req_write(self, req, d): |
101 | self._log(DBG.HTTP, 'req_write ', idof=req, d=d) | |
102 | req.write(d) | |
103 | ||
88487243 | 104 | def _check_outbound(self): |
8718b02c | 105 | log_debug(DBG.HTTP_CTRL, 'CHKO') |
88487243 IJ |
106 | while True: |
107 | try: request = self._rq[0] | |
108 | except IndexError: request = None | |
109 | if request and request.finished: | |
8c3b6620 | 110 | self._log(DBG.HTTP_CTRL, 'CHKO req finished, discard', idof=request) |
88487243 IJ |
111 | self._rq.popleft() |
112 | continue | |
113 | ||
114 | if not self._pq.nonempty(): | |
115 | # no packets, oh well | |
8c3b6620 | 116 | self._log(DBG.HTTP_CTRL, 'CHKO no packets, OUT-DONE', idof=request) |
d579a048 | 117 | break |
88487243 IJ |
118 | |
119 | if request is None: | |
120 | # no request | |
8c3b6620 | 121 | self._log(DBG.HTTP_CTRL, 'CHKO no request, OUT-DONE', idof=request) |
88487243 IJ |
122 | break |
123 | ||
8c3b6620 | 124 | self._log(DBG.HTTP_CTRL, 'CHKO processing', idof=request) |
88487243 | 125 | # request, and also some non-expired packets |
7b07f0b5 | 126 | self._pq.process((lambda: request.sentLength), |
3d003cdd | 127 | (lambda d: self._req_write(request, d)), |
7b07f0b5 | 128 | self.max_batch_down) |
0ac316c8 | 129 | |
88487243 | 130 | assert(request.sentLength) |
84e763c7 | 131 | self._rq.popleft() |
88487243 | 132 | request.finish() |
8c3b6620 | 133 | self._log(DBG.HTTP, 'complete', idof=request) |
88487243 | 134 | # round again, looking for more to do |
0ac316c8 | 135 | |
88487243 IJ |
136 | while len(self._rq) > self.target_requests_outstanding: |
137 | request = self._rq.popleft() | |
8c3b6620 | 138 | self._log(DBG.HTTP, 'CHKO above target, returning empty', idof=request) |
88487243 | 139 | request.finish() |
650a3251 | 140 | |
d579a048 | 141 | def process_request(request, desca): |
a4e03162 | 142 | # find client, update config, etc. |
5dd3275b | 143 | metadata = request.args[b'm'][0] |
00192d6a | 144 | metadata = metadata.split(b'\r\n') |
ba5630fd IJ |
145 | (ci_s, pw, tro, cto) = metadata[0:4] |
146 | desca['m[0,2:3]'] = [ci_s, tro, cto] | |
a9a369c7 | 147 | ci_s = ci_s.decode('utf-8') |
ba5630fd IJ |
148 | tro = int(tro); desca['tro']= tro |
149 | cto = int(cto); desca['cto']= cto | |
a4e03162 | 150 | ci = ipaddr(ci_s) |
d579a048 | 151 | desca['ci'] = ci |
a4e03162 IJ |
152 | cl = clients[ci] |
153 | if pw != cl.pw: raise ValueError('bad password') | |
b68c0739 | 154 | desca['pwok']=True |
1672ded0 | 155 | |
d579a048 IJ |
156 | if tro != cl.target_requests_outstanding: |
157 | raise ValueError('tro must be %d' % cl.target_requests_outstanding) | |
5da7763e | 158 | |
ba5630fd IJ |
159 | if cto < cl.http_timeout: |
160 | raise ValueError('cto must be >= %d' % cl.http_timeout) | |
161 | ||
d579a048 | 162 | try: |
e8fcf3b7 | 163 | d = request.args[b'd'][0] |
d579a048 | 164 | desca['d'] = d |
19f5f9b5 IJ |
165 | desca['dlen'] = len(d) |
166 | except KeyError: | |
167 | d = b'' | |
168 | desca['dlen'] = None | |
169 | ||
170 | log_http(desca, 'processing', idof=id(request), d=d) | |
5da7763e | 171 | |
6f387df3 IJ |
172 | d = mime_translate(d) |
173 | ||
a4e03162 IJ |
174 | cl.process_arriving_data(d) |
175 | cl.new_request(request) | |
5da7763e | 176 | |
19f5f9b5 | 177 | def log_http(desca, msg, **kwargs): |
8c3b6620 | 178 | try: |
19f5f9b5 | 179 | kwargs['d'] = desca['d'] |
8c3b6620 IJ |
180 | del desca['d'] |
181 | except KeyError: | |
19f5f9b5 IJ |
182 | pass |
183 | log_debug(DBG.HTTP, msg + repr(desca), **kwargs) | |
8c3b6620 | 184 | |
a4e03162 IJ |
185 | class IphttpResource(twisted.web.resource.Resource): |
186 | isLeaf = True | |
187 | def render_POST(self, request): | |
297b3ebf IJ |
188 | log_debug(DBG.HTTP_FULL, |
189 | 'req recv: ' + repr(request) + ' ' + repr(request.args), | |
190 | idof=id(request)) | |
d579a048 IJ |
191 | desca = {'d': None} |
192 | try: process_request(request, desca) | |
0d10f35f | 193 | except Exception as e: |
68afd97b | 194 | emsg = traceback.format_exc() |
6f387df3 | 195 | log_http(desca, 'RETURNING EXCEPTION ' + emsg) |
0d10f35f IJ |
196 | request.setHeader('Content-Type','text/plain; charset="utf-8"') |
197 | request.setResponseCode(400) | |
a9a369c7 | 198 | return (emsg + ' # ' + repr(desca) + '\r\n').encode('utf-8') |
19f5f9b5 | 199 | log_debug(DBG.HTTP_CTRL, '...', idof=id(request)) |
d579a048 | 200 | return NOT_DONE_YET |
84f2d011 | 201 | |
8e279651 | 202 | def render_GET(self, request): |
d579a048 | 203 | log_debug(DBG.HTTP, 'GET request') |
040ff511 | 204 | return b'<html><body>hippotat</body></html>' |
8e279651 | 205 | |
5da7763e IJ |
206 | def start_http(): |
207 | resource = IphttpResource() | |
b11c6e7a | 208 | site = twisted.web.server.Site(resource) |
88487243 IJ |
209 | for sa in c.saddrs: |
210 | ep = sa.make_endpoint() | |
b11c6e7a | 211 | crash_on_defer(ep.listen(site)) |
d579a048 | 212 | log_debug(DBG.INIT, 'listening on %s' % sa) |
5da7763e IJ |
213 | |
214 | #---------- config and setup ---------- | |
215 | ||
c7fb640e | 216 | def process_cfg(putative_servers, putative_clients): |
8d374606 | 217 | global c |
c7fb640e IJ |
218 | c = ConfigResults() |
219 | c.server = cfg.get('SERVER','server') | |
220 | ||
8d374606 IJ |
221 | cfg_process_common(c, c.server) |
222 | cfg_process_saddrs(c, c.server) | |
223 | cfg_process_vnetwork(c, c.server) | |
224 | cfg_process_vaddr(c, c.server) | |
c7fb640e IJ |
225 | |
226 | for (ci,cs) in putative_clients.items(): | |
227 | cc = ConfigResults() | |
228 | sections = cfg_process_client_common(cc,c.server,cs,ci): | |
229 | if not sections: continue | |
230 | cfg_process_client_limited(cc,c.server,sections, 'max_batch_down') | |
231 | cfg_process_client_limited(cc,c.server,sections, 'max_queue_time') | |
8d374606 | 232 | Client(ci) |
e75e9c17 IJ |
233 | |
234 | try: | |
c7fb640e | 235 | c.relay = cfg.get(c.server, 'relay') |
e2d41dc1 | 236 | except NoOptionError: |
8d374606 IJ |
237 | for search in c.vnetwork.hosts(): |
238 | if search == c.vaddr: continue | |
87a7c0c7 | 239 | c.relay = search |
e75e9c17 | 240 | break |
3fba9787 | 241 | |
8d374606 | 242 | cfg_process_ipif(c, |
c7fb640e IJ |
243 | [c.server, 'DEFAULT'], |
244 | (('local','vaddr'), | |
245 | ('peer', 'vrelay'), | |
246 | ('rnets','vnetwork'))) | |
5bae5ba3 | 247 | |
5510890e | 248 | common_startup(process_cfg) |
6f387df3 | 249 | start_ipif(c.ipif_command, (lambda p,s,d: route(p,"[ipif]",s,d))) |
87a7c0c7 | 250 | start_http() |
ae7c7784 | 251 | common_run() |