| 1 | #!/usr/bin/python3 |
| 2 | # |
| 3 | # Hippotat - Asinine IP Over HTTP program |
| 4 | # ./hippotat - client main program |
| 5 | # |
| 6 | # Copyright 2017 Ian Jackson |
| 7 | # |
| 8 | # GPLv3+ |
| 9 | # |
| 10 | # This program is free software: you can redistribute it and/or modify |
| 11 | # it under the terms of the GNU General Public License as published by |
| 12 | # the Free Software Foundation, either version 3 of the License, or |
| 13 | # (at your option) any later version. |
| 14 | # |
| 15 | # This program is distributed in the hope that it will be useful, |
| 16 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | # GNU General Public License for more details. |
| 19 | # |
| 20 | # You should have received a copy of the GNU General Public License |
| 21 | # along with this program, in the file GPLv3. If not, |
| 22 | # see <http://www.gnu.org/licenses/>. |
| 23 | |
| 24 | #@ import sys; sys.path.append('@PYBUILD_INSTALL_DIR@') |
| 25 | from hippotatlib import * |
| 26 | |
| 27 | import twisted.web |
| 28 | import twisted.web.client |
| 29 | |
| 30 | import io |
| 31 | |
| 32 | class GeneralResponseConsumer(twisted.internet.protocol.Protocol): |
| 33 | def __init__(self, cl, req, desc): |
| 34 | self._cl = cl |
| 35 | self._req = req |
| 36 | self._desc = desc |
| 37 | |
| 38 | def _log(self, dflag, msg, **kwargs): |
| 39 | self._cl.log(dflag, '%s: %s' % (self._desc, msg), idof=self._req, **kwargs) |
| 40 | |
| 41 | def connectionMade(self): |
| 42 | self._log(DBG.HTTP_CTRL, 'connectionMade') |
| 43 | |
| 44 | class ResponseConsumer(GeneralResponseConsumer): |
| 45 | def __init__(self, cl, req): |
| 46 | super().__init__(cl, req, 'RC') |
| 47 | ssddesc = '[%s] %s' % (id(req), self._desc) |
| 48 | self._ssd = SlipStreamDecoder(ssddesc, partial(queue_inbound, cl.ipif)) |
| 49 | self._log(DBG.HTTP_CTRL, '__init__') |
| 50 | |
| 51 | def dataReceived(self, data): |
| 52 | self._log(DBG.HTTP, 'dataReceived', d=data) |
| 53 | try: |
| 54 | self._ssd.inputdata(data) |
| 55 | except Exception as e: |
| 56 | self._handleexception() |
| 57 | |
| 58 | def connectionLost(self, reason): |
| 59 | self._log(DBG.HTTP_CTRL, 'connectionLost ' + str(reason)) |
| 60 | if not reason.check(twisted.web.client.ResponseDone): |
| 61 | self.latefailure() |
| 62 | return |
| 63 | try: |
| 64 | self._log(DBG.HTTP, 'ResponseDone') |
| 65 | self._ssd.flush() |
| 66 | self._cl.req_fin(self._req) |
| 67 | except Exception as e: |
| 68 | self._handleexception() |
| 69 | self._cl.report_running() |
| 70 | |
| 71 | def _handleexception(self): |
| 72 | self._latefailure(traceback.format_exc()) |
| 73 | |
| 74 | def _latefailure(self, reason): |
| 75 | self._log(DBG.HTTP_CTRL, '_latefailure ' + str(reason)) |
| 76 | self._cl.req_err(self._req, reason) |
| 77 | |
| 78 | class ErrorResponseConsumer(GeneralResponseConsumer): |
| 79 | def __init__(self, cl, req, resp): |
| 80 | super().__init__(cl, req, 'ERROR-RC') |
| 81 | self._resp = resp |
| 82 | self._m = b'' |
| 83 | try: |
| 84 | self._phrase = resp.phrase.decode('utf-8') |
| 85 | except Exception: |
| 86 | self._phrase = repr(resp.phrase) |
| 87 | self._log(DBG.HTTP_CTRL, '__init__ %d %s' % (resp.code, self._phrase)) |
| 88 | |
| 89 | def dataReceived(self, data): |
| 90 | self._log(DBG.HTTP_CTRL, 'dataReceived ' + repr(data)) |
| 91 | self._m += data |
| 92 | |
| 93 | def connectionLost(self, reason): |
| 94 | try: |
| 95 | mbody = self._m.decode('utf-8') |
| 96 | except Exception: |
| 97 | mbody = repr(self._m) |
| 98 | if not reason.check(twisted.web.client.ResponseDone): |
| 99 | mbody += ' || ' + str(reason) |
| 100 | self._cl.req_err(self._req, |
| 101 | "FAILED %d %s | %s" |
| 102 | % (self._resp.code, self._phrase, mbody)) |
| 103 | |
| 104 | class Client(): |
| 105 | def __init__(cl, c,ss,cs): |
| 106 | cl.c = c |
| 107 | cl.outstanding = { } |
| 108 | cl.desc = '[%s %s] ' % (ss,cs) |
| 109 | cl.running_reported = False |
| 110 | cl.log_info('setting up') |
| 111 | |
| 112 | def log_info(cl, msg): |
| 113 | log.info(cl.desc + msg, dflag=False) |
| 114 | |
| 115 | def report_running(cl): |
| 116 | if not cl.running_reported: |
| 117 | cl.log_info('running OK') |
| 118 | cl.running_reported = True |
| 119 | |
| 120 | def log(cl, dflag, msg, **kwargs): |
| 121 | log_debug(dflag, cl.desc + msg, **kwargs) |
| 122 | |
| 123 | def log_outstanding(cl): |
| 124 | cl.log(DBG.CTRL_DUMP, 'OS %s' % cl.outstanding) |
| 125 | |
| 126 | def start(cl): |
| 127 | cl.queue = PacketQueue('up', cl.c.max_queue_time) |
| 128 | cl.agent = twisted.web.client.Agent( |
| 129 | reactor, connectTimeout = cl.c.http_timeout) |
| 130 | |
| 131 | def outbound(cl, packet, saddr, daddr): |
| 132 | #print('OUT ', saddr, daddr, repr(packet)) |
| 133 | cl.queue.append(packet) |
| 134 | cl.check_outbound() |
| 135 | |
| 136 | def req_ok(cl, req, resp): |
| 137 | cl.log(DBG.HTTP_CTRL, |
| 138 | 'req_ok %d %s %s' % (resp.code, repr(resp.phrase), str(resp)), |
| 139 | idof=req) |
| 140 | if resp.code == 200: |
| 141 | rc = ResponseConsumer(cl, req) |
| 142 | else: |
| 143 | rc = ErrorResponseConsumer(cl, req, resp) |
| 144 | |
| 145 | resp.deliverBody(rc) |
| 146 | # now rc is responsible for calling req_fin |
| 147 | |
| 148 | def req_err(cl, req, err): |
| 149 | # called when the Deferred fails, or (if it completes), |
| 150 | # later, by ResponsConsumer or ErrorResponsConsumer |
| 151 | try: |
| 152 | cl.log(DBG.HTTP_CTRL, 'req_err ' + str(err), idof=req) |
| 153 | if isinstance(err, twisted.python.failure.Failure): |
| 154 | err = err.getTraceback() |
| 155 | print('[%#x] %s' % (id(req), err), file=sys.stderr) |
| 156 | if not isinstance(cl.outstanding[req], int): |
| 157 | raise RuntimeError('[%#x] previously %s' % |
| 158 | (id(req), cl.outstanding[req])) |
| 159 | cl.outstanding[req] = err |
| 160 | cl.log_outstanding() |
| 161 | reactor.callLater(cl.c.http_retry, partial(cl.req_fin, req)) |
| 162 | except Exception as e: |
| 163 | crash(traceback.format_exc() + '\n----- handling -----\n' + err) |
| 164 | |
| 165 | def req_fin(cl, req): |
| 166 | del cl.outstanding[req] |
| 167 | cl.log(DBG.HTTP_CTRL, 'req_fin OS=%d' % len(cl.outstanding), idof=req) |
| 168 | cl.check_outbound() |
| 169 | |
| 170 | def check_outbound(cl): |
| 171 | while True: |
| 172 | if len(cl.outstanding) >= cl.c.max_outstanding: |
| 173 | break |
| 174 | |
| 175 | if (not cl.queue.nonempty() and |
| 176 | len(cl.outstanding) >= cl.c.target_requests_outstanding): |
| 177 | break |
| 178 | |
| 179 | d = b'' |
| 180 | def moredata(s): nonlocal d; d += s |
| 181 | cl.queue.process((lambda: len(d)), |
| 182 | moredata, |
| 183 | cl.c.max_batch_up) |
| 184 | |
| 185 | d = mime_translate(d) |
| 186 | |
| 187 | crlf = b'\r\n' |
| 188 | lf = b'\n' |
| 189 | mime = (b'--b' + crlf + |
| 190 | b'Content-Type: text/plain; charset="utf-8"' + crlf + |
| 191 | b'Content-Disposition: form-data; name="m"' + crlf + crlf + |
| 192 | str(cl.c.client) .encode('ascii') + crlf + |
| 193 | cl.c.password + crlf + |
| 194 | str(cl.c.target_requests_outstanding) |
| 195 | .encode('ascii') + crlf + |
| 196 | str(cl.c.http_timeout) .encode('ascii') + crlf + |
| 197 | (( |
| 198 | b'--b' + crlf + |
| 199 | b'Content-Type: application/octet-stream' + crlf + |
| 200 | b'Content-Disposition: form-data; name="d"' + crlf + crlf + |
| 201 | d + crlf |
| 202 | ) if len(d) else b'') + |
| 203 | b'--b--' + crlf) |
| 204 | |
| 205 | #df = open('data.dump.dbg', mode='wb') |
| 206 | #df.write(mime) |
| 207 | #df.close() |
| 208 | # POST -use -c 'multipart/form-data; boundary="b"' http://localhost:8099/ <data.dump.dbg |
| 209 | |
| 210 | cl.log(DBG.HTTP_FULL, 'requesting: ' + str(mime)) |
| 211 | |
| 212 | hh = { 'User-Agent': ['hippotat'], |
| 213 | 'Content-Type': ['multipart/form-data; boundary="b"'], |
| 214 | 'Content-Length': [str(len(mime))] } |
| 215 | |
| 216 | bytesreader = io.BytesIO(mime) |
| 217 | producer = twisted.web.client.FileBodyProducer(bytesreader) |
| 218 | |
| 219 | req = cl.agent.request(b'POST', |
| 220 | cl.c.url, |
| 221 | twisted.web.client.Headers(hh), |
| 222 | producer) |
| 223 | |
| 224 | cl.outstanding[req] = len(d) |
| 225 | cl.log(DBG.HTTP_CTRL, |
| 226 | 'request OS=%d' % len(cl.outstanding), |
| 227 | idof=req, d=d) |
| 228 | req.addTimeout(cl.c.http_timeout, reactor) |
| 229 | req.addCallback(partial(cl.req_ok, req)) |
| 230 | req.addErrback(partial(cl.req_err, req)) |
| 231 | |
| 232 | cl.log_outstanding() |
| 233 | |
| 234 | clients = [ ] |
| 235 | |
| 236 | def process_cfg(_opts, putative_servers, putative_clients): |
| 237 | global clients |
| 238 | |
| 239 | for ss in putative_servers.values(): |
| 240 | for (ci,cs) in putative_clients.items(): |
| 241 | c = ConfigResults() |
| 242 | |
| 243 | sections = cfg_process_client_common(c,ss,cs,ci) |
| 244 | if not sections: continue |
| 245 | |
| 246 | log_debug_config('processing client [%s %s]' % (ss, cs)) |
| 247 | |
| 248 | def srch(getter,key): return cfg_search(getter,key,sections) |
| 249 | |
| 250 | c.http_timeout += srch(cfg.getint, 'http_timeout_grace') |
| 251 | c.max_outstanding = srch(cfg.getint, 'max_requests_outstanding') |
| 252 | c.max_batch_up = srch(cfg.getint, 'max_batch_up') |
| 253 | c.http_retry = srch(cfg.getint, 'http_retry') |
| 254 | c.max_queue_time = srch(cfg.getint, 'max_queue_time') |
| 255 | c.vroutes = srch(cfg.get, 'vroutes') |
| 256 | |
| 257 | try: c.ifname = srch(cfg_get_raw, 'ifname_client') |
| 258 | except NoOptionError: pass |
| 259 | |
| 260 | try: c.url = srch(cfg.get,'url') |
| 261 | except NoOptionError: |
| 262 | cfg_process_saddrs(c, ss) |
| 263 | c.url = c.saddrs[0].url() |
| 264 | |
| 265 | c.client = ci |
| 266 | |
| 267 | cfg_process_vaddr(c,ss) |
| 268 | |
| 269 | cfg_process_ipif(c, |
| 270 | sections, |
| 271 | (('local','client'), |
| 272 | ('peer', 'vaddr'), |
| 273 | ('rnets','vroutes'))) |
| 274 | |
| 275 | clients.append(Client(c,ss,cs)) |
| 276 | |
| 277 | common_startup(process_cfg) |
| 278 | |
| 279 | for cl in clients: |
| 280 | cl.start() |
| 281 | cl.ipif = start_ipif(cl.c.ipif_command, cl.outbound) |
| 282 | cl.check_outbound() |
| 283 | |
| 284 | common_run() |