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 | ||
ec0c4d95 | 19 | def route(packet, saddr, daddr): |
d579a048 IJ |
20 | def lt(dest): |
21 | log_data(DBG.ROUTE, packet, 'route: %s -> %s: %s' % (saddr,daddr,dest)) | |
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') |
5da7763e IJ |
32 | log_discard(packet, saddr, daddr, 'relay') |
33 | else: | |
d579a048 IJ |
34 | lt('discard no-client') |
35 | log_discard(packet, 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 | |
50 | # .max_request_time | |
650a3251 | 51 | # .target_requests_outstanding |
88487243 IJ |
52 | |
53 | if ip not in c.network: | |
54 | raise ValueError('client %s not in network' % ip) | |
55 | ||
650a3251 IJ |
56 | for k in ('max_batch_down','max_queue_time','max_request_time', |
57 | 'target_requests_outstanding'): | |
ec88b1f1 | 58 | req = cfg.getint(cs, k) |
094ee3a2 | 59 | limit = cfg.getint('limits',k) |
c4b6d990 | 60 | self.__dict__[k] = min(req, limit) |
ca732796 | 61 | |
650a3251 | 62 | self._pq = PacketQueue(self.max_queue_time) |
c4b6d990 | 63 | |
88487243 IJ |
64 | if ip in clients: |
65 | raise ValueError('multiple client cfg sections for %s' % ip) | |
66 | clients[ip] = self | |
67 | ||
d579a048 IJ |
68 | log_debug('DBG.INIT', 'new client %s' % self) |
69 | ||
88487243 | 70 | def process_arriving_data(self, d): |
d579a048 | 71 | log_data(DBG.FLOW, d, 'client req data: %s' % saddr=self._ip) |
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) | |
76 | route(packet, saddr, daddr) | |
77 | ||
78 | def _req_cancel(self, request): | |
d579a048 | 79 | log_httpreq(DBG.HTTPCTRL, request, 'cancel') |
88487243 IJ |
80 | request.finish() |
81 | ||
82 | def _req_error(self, err, request): | |
d579a048 | 83 | log_httpreq(DBG.HTTPCTRL, request, 'error %s' % err) |
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 | |
d579a048 | 90 | def new_request(self, request): |
88487243 IJ |
91 | request.setHeader('Content-Type','application/octet-stream') |
92 | reactor.callLater(self.max_request_time, self._req_cancel, request) | |
93 | request.notifyFinish().addErrback(self._req_error, request) | |
94 | self._rq.append(request) | |
95 | self._check_outbound() | |
96 | ||
97 | def _check_outbound(self): | |
d579a048 | 98 | log_httpreq(DBG.HTTPCTRL, None, 'CHKO') |
88487243 IJ |
99 | while True: |
100 | try: request = self._rq[0] | |
101 | except IndexError: request = None | |
102 | if request and request.finished: | |
d579a048 | 103 | log_httpreq(DBG.HTTP_CTRL, request, 'CHKO request finished, discard') |
88487243 IJ |
104 | self._rq.popleft() |
105 | continue | |
106 | ||
107 | if not self._pq.nonempty(): | |
108 | # no packets, oh well | |
d579a048 IJ |
109 | log_httpreq(DBG.HTTP_CTRL, request, 'CHKO no packets, OUT-DONE') |
110 | break | |
88487243 IJ |
111 | |
112 | if request is None: | |
113 | # no request | |
d579a048 | 114 | log_httpreq(DBG.HTTP_CTRL, request, 'CHKO no request, OUT-DONE') |
88487243 IJ |
115 | break |
116 | ||
d579a048 | 117 | log_httpreq(DBG.HTTP_CTRL, request, 'CHKO processing') |
88487243 | 118 | # request, and also some non-expired packets |
7b07f0b5 IJ |
119 | self._pq.process((lambda: request.sentLength), |
120 | request.write, | |
121 | self.max_batch_down) | |
0ac316c8 | 122 | |
88487243 | 123 | assert(request.sentLength) |
84e763c7 | 124 | self._rq.popleft() |
88487243 | 125 | request.finish() |
d579a048 | 126 | log_httpreq(DBG.HTTP, request, 'complete') |
88487243 | 127 | # round again, looking for more to do |
0ac316c8 | 128 | |
88487243 IJ |
129 | while len(self._rq) > self.target_requests_outstanding: |
130 | request = self._rq.popleft() | |
d579a048 | 131 | log_httpreq(DBG.HTTP, request, 'CHKO above target, returning empty') |
88487243 | 132 | request.finish() |
650a3251 | 133 | |
d579a048 | 134 | def process_request(request, desca): |
a4e03162 IJ |
135 | # find client, update config, etc. |
136 | metadata = request.args['m'] | |
d579a048 | 137 | metadata = metadata.split(b'\n') |
a4e03162 | 138 | (ci_s, pw, tro) = metadata.split(b'\n')[0:3] |
d579a048 | 139 | desca['m'] = [ci_s, tro] |
a4e03162 | 140 | ci = ipaddr(ci_s) |
d579a048 | 141 | desca['ci'] = ci |
a4e03162 IJ |
142 | cl = clients[ci] |
143 | if pw != cl.pw: raise ValueError('bad password') | |
d579a048 | 144 | desca['pwok'=True] |
1672ded0 | 145 | |
d579a048 IJ |
146 | if tro != cl.target_requests_outstanding: |
147 | raise ValueError('tro must be %d' % cl.target_requests_outstanding) | |
5da7763e | 148 | |
d579a048 IJ |
149 | try: |
150 | d = request.args['d'] | |
151 | desca['d'] = d | |
a4e03162 | 152 | except KeyError: d = '' |
5da7763e | 153 | |
a4e03162 IJ |
154 | cl.process_arriving_data(d) |
155 | cl.new_request(request) | |
5da7763e | 156 | |
a4e03162 IJ |
157 | class IphttpResource(twisted.web.resource.Resource): |
158 | isLeaf = True | |
159 | def render_POST(self, request): | |
d579a048 IJ |
160 | desca = {'d': None} |
161 | try: process_request(request, desca) | |
0d10f35f | 162 | except Exception as e: |
d579a048 IJ |
163 | emsg = str(e).encode('utf-8') |
164 | log_http(desca, 'EXCEPTION ' + emsg) | |
0d10f35f IJ |
165 | request.setHeader('Content-Type','text/plain; charset="utf-8"') |
166 | request.setResponseCode(400) | |
d579a048 IJ |
167 | return emsg |
168 | log_http(desca, '... [%s]' % id(request)) | |
169 | return NOT_DONE_YET | |
84f2d011 | 170 | |
8e279651 | 171 | def render_GET(self, request): |
d579a048 | 172 | log_debug(DBG.HTTP, 'GET request') |
040ff511 | 173 | return b'<html><body>hippotat</body></html>' |
8e279651 | 174 | |
5da7763e IJ |
175 | def start_http(): |
176 | resource = IphttpResource() | |
b11c6e7a | 177 | site = twisted.web.server.Site(resource) |
88487243 IJ |
178 | for sa in c.saddrs: |
179 | ep = sa.make_endpoint() | |
b11c6e7a | 180 | crash_on_defer(ep.listen(site)) |
d579a048 | 181 | log_debug(DBG.INIT, 'listening on %s' % sa) |
5da7763e IJ |
182 | |
183 | #---------- config and setup ---------- | |
184 | ||
3fba9787 | 185 | def process_cfg(): |
87a7c0c7 | 186 | process_cfg_common_always() |
88487243 IJ |
187 | process_cfg_server() |
188 | process_cfg_network() | |
e75e9c17 IJ |
189 | |
190 | try: | |
87a7c0c7 | 191 | c.relay = cfg.get('virtual','relay') |
e2d41dc1 | 192 | except NoOptionError: |
87a7c0c7 | 193 | for search in c.network.hosts(): |
88487243 | 194 | if search == c.server: continue |
87a7c0c7 | 195 | c.relay = search |
e75e9c17 | 196 | break |
3fba9787 | 197 | |
88487243 IJ |
198 | process_cfg_saddrs() |
199 | process_cfg_clients(Client) | |
200 | ||
201 | process_cfg_ipif('server', | |
202 | (('local','server'), | |
034284c3 | 203 | ('peer', 'relay'), |
88487243 | 204 | ('rnets','network'))) |
5bae5ba3 | 205 | |
1321ad5f | 206 | common_startup() |
87a7c0c7 IJ |
207 | process_cfg() |
208 | start_ipif(c.ipif_command, route) | |
209 | start_http() | |
ae7c7784 | 210 | common_run() |