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Diffstat (limited to 'contrib/twisted_ipa.py')
| -rwxr-xr-x | contrib/twisted_ipa.py | 384 |
1 files changed, 0 insertions, 384 deletions
diff --git a/contrib/twisted_ipa.py b/contrib/twisted_ipa.py deleted file mode 100755 index e6d7b1a16..000000000 --- a/contrib/twisted_ipa.py +++ /dev/null @@ -1,384 +0,0 @@ -#!/usr/bin/python3 -# -*- mode: python-mode; py-indent-tabs-mode: nil -*- -""" -/* - * Copyright (C) 2016 sysmocom s.f.m.c. GmbH - * - * All Rights Reserved - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 3 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ -""" - -__version__ = "0.6" # bump this on every non-trivial change - -from ipa import Ctrl, IPA -from twisted.internet.protocol import ReconnectingClientFactory -from twisted.internet import reactor -from twisted.protocols import basic -import argparse, logging - -class IPACommon(basic.Int16StringReceiver): - """ - Generic IPA protocol handler: include some routines for simpler subprotocols. - It's not intended as full implementation of all subprotocols, rather common ground and example code. - """ - def dbg(self, line): - """ - Debug print helper - """ - self.factory.log.debug(line) - - def osmo_CTRL(self, data): - """ - OSMO CTRL protocol - Placeholder, see corresponding derived class - """ - pass - - def osmo_MGCP(self, data): - """ - OSMO MGCP extension - """ - self.dbg('OSMO MGCP received %s' % data) - - def osmo_LAC(self, data): - """ - OSMO LAC extension - """ - self.dbg('OSMO LAC received %s' % data) - - def osmo_SMSC(self, data): - """ - OSMO SMSC extension - """ - self.dbg('OSMO SMSC received %s' % data) - - def osmo_ORC(self, data): - """ - OSMO ORC extension - """ - self.dbg('OSMO ORC received %s' % data) - - def osmo_GSUP(self, data): - """ - OSMO GSUP extension - """ - self.dbg('OSMO GSUP received %s' % data) - - def osmo_OAP(self, data): - """ - OSMO OAP extension - """ - self.dbg('OSMO OAP received %s' % data) - - def osmo_UNKNOWN(self, data): - """ - OSMO defaul extension handler - """ - self.dbg('OSMO unknown extension received %s' % data) - - def handle_RSL(self, data, proto, extension): - """ - RSL protocol handler - """ - self.dbg('IPA RSL received message with extension %s' % extension) - - def handle_CCM(self, data, proto, msgt): - """ - CCM (IPA Connection Management) - Placeholder, see corresponding derived class - """ - pass - - def handle_SCCP(self, data, proto, extension): - """ - SCCP protocol handler - """ - self.dbg('IPA SCCP received message with extension %s' % extension) - - def handle_OML(self, data, proto, extension): - """ - OML protocol handler - """ - self.dbg('IPA OML received message with extension %s' % extension) - - def handle_OSMO(self, data, proto, extension): - """ - Dispatcher point for OSMO subprotocols based on extension name, lambda default should never happen - """ - method = getattr(self, 'osmo_' + IPA().ext(extension), lambda: "extension dispatch failure") - method(data) - - def handle_MGCP(self, data, proto, extension): - """ - MGCP protocol handler - """ - self.dbg('IPA MGCP received message with attribute %s' % extension) - - def handle_UNKNOWN(self, data, proto, extension): - """ - Default protocol handler - """ - self.dbg('IPA received message for %s (%s) protocol with attribute %s' % (IPA().proto(proto), proto, extension)) - - def process_chunk(self, data): - """ - Generic message dispatcher for IPA (sub)protocols based on protocol name, lambda default should never happen - """ - (_, proto, extension, content) = IPA().del_header(data) - if content is not None: - self.dbg('IPA received %s::%s [%d/%d] %s' % (IPA().proto(proto), IPA().ext_name(proto, extension), len(data), len(content), content)) - method = getattr(self, 'handle_' + IPA().proto(proto), lambda: "protocol dispatch failure") - method(content, proto, extension) - - def dataReceived(self, data): - """ - Override for dataReceived from Int16StringReceiver because of inherently incompatible interpretation of length - If default handler is used than we would always get off-by-1 error (Int16StringReceiver use equivalent of l + 2) - """ - if len(data): - (head, tail) = IPA().split_combined(data) - self.process_chunk(head) - self.dataReceived(tail) - - def connectionMade(self): - """ - We have to resetDelay() here to drop internal state to default values to make reconnection logic work - Make sure to call this via super() if overriding to keep reconnection logic intact - """ - addr = self.transport.getPeer() - self.dbg('IPA connected to %s:%d peer' % (addr.host, addr.port)) - self.factory.resetDelay() - - -class CCM(IPACommon): - """ - Implementation of CCM protocol for IPA multiplex - """ - def ack(self): - self.transport.write(IPA().id_ack()) - - def ping(self): - self.transport.write(IPA().ping()) - - def pong(self): - self.transport.write(IPA().pong()) - - def handle_CCM(self, data, proto, msgt): - """ - CCM (IPA Connection Management) - Only basic logic necessary for tests is implemented (ping-pong, id ack etc) - """ - if msgt == IPA.MSGT['ID_GET']: - self.transport.getHandle().sendall(IPA().id_resp(self.factory.ccm_id)) - # if we call - # self.transport.write(IPA().id_resp(self.factory.test_id)) - # instead, than we would have to also call - # reactor.callLater(1, self.ack) - # instead of self.ack() - # otherwise the writes will be glued together - hence the necessity for ugly hack with 1s timeout - # Note: this still might work depending on the IPA implementation details on the other side - self.ack() - # schedule PING in 4s - reactor.callLater(4, self.ping) - if msgt == IPA.MSGT['PING']: - self.pong() - - -class CTRL(IPACommon): - """ - Implementation of Osmocom control protocol for IPA multiplex - """ - def ctrl_SET(self, data, op_id, v): - """ - Handle CTRL SET command - """ - self.dbg('CTRL SET [%s] %s' % (op_id, v)) - - def ctrl_SET_REPLY(self, data, op_id, v): - """ - Handle CTRL SET reply - """ - self.dbg('CTRL SET REPLY [%s] %s' % (op_id, v)) - - def ctrl_GET(self, data, op_id, v): - """ - Handle CTRL GET command - """ - self.dbg('CTRL GET [%s] %s' % (op_id, v)) - - def ctrl_GET_REPLY(self, data, op_id, v): - """ - Handle CTRL GET reply - """ - self.dbg('CTRL GET REPLY [%s] %s' % (op_id, v)) - - def ctrl_TRAP(self, data, op_id, v): - """ - Handle CTRL TRAP command - """ - self.dbg('CTRL TRAP [%s] %s' % (op_id, v)) - - def ctrl_ERROR(self, data, op_id, v): - """ - Handle CTRL ERROR reply - """ - self.dbg('CTRL ERROR [%s] %s' % (op_id, v)) - - def osmo_CTRL(self, data): - """ - OSMO CTRL message dispatcher, lambda default should never happen - For basic tests only, appropriate handling routines should be replaced: see CtrlServer for example - """ - self.dbg('OSMO CTRL received %s::%s' % Ctrl().parse(data.decode('utf-8'))) - (cmd, op_id, v) = data.decode('utf-8').split(' ', 2) - method = getattr(self, 'ctrl_' + cmd, lambda: "CTRL unknown command") - method(data, op_id, v) - - -class IPAServer(CCM): - """ - Test implementation of IPA server - Demonstrate CCM opearation by overriding necessary bits from CCM - """ - def connectionMade(self): - """ - Keep reconnection logic working by calling routine from CCM - Initiate CCM upon connection - """ - addr = self.transport.getPeer() - self.factory.log.info('IPA server: connection from %s:%d client' % (addr.host, addr.port)) - super(IPAServer, self).connectionMade() - self.transport.write(IPA().id_get()) - - -class CtrlServer(CTRL): - """ - Test implementation of CTRL server - Demonstarte CTRL handling by overriding simpler routines from CTRL - """ - def connectionMade(self): - """ - Keep reconnection logic working by calling routine from CTRL - Send TRAP upon connection - Note: we can't use sendString() because of it's incompatibility with IPA interpretation of length prefix - """ - addr = self.transport.getPeer() - self.factory.log.info('CTRL server: connection from %s:%d client' % (addr.host, addr.port)) - super(CtrlServer, self).connectionMade() - self.transport.write(Ctrl().trap('LOL', 'what')) - self.transport.write(Ctrl().trap('rulez', 'XXX')) - - def reply(self, r): - self.transport.write(Ctrl().add_header(r)) - - def ctrl_SET(self, data, op_id, v): - """ - CTRL SET command: always succeed - """ - self.dbg('SET [%s] %s' % (op_id, v)) - self.reply('SET_REPLY %s %s' % (op_id, v)) - - def ctrl_GET(self, data, op_id, v): - """ - CTRL GET command: always fail - """ - self.dbg('GET [%s] %s' % (op_id, v)) - self.reply('ERROR %s No variable found' % op_id) - - -class IPAFactory(ReconnectingClientFactory): - """ - Generic IPA Client Factory which can be used to store state for various subprotocols and manage connections - Note: so far we do not really need separate Factory for acting as a server due to protocol simplicity - """ - protocol = IPACommon - log = None - ccm_id = IPA().identity(unit=b'1515/0/1', mac=b'b0:0b:fa:ce:de:ad:be:ef', utype=b'sysmoBTS', name=b'StingRay', location=b'hell', sw=IPA.version.encode('utf-8')) - - def __init__(self, proto=None, log=None, ccm_id=None): - if proto: - self.protocol = proto - if ccm_id: - self.ccm_id = ccm_id - if log: - self.log = log - else: - self.log = logging.getLogger('IPAFactory') - self.log.setLevel(logging.CRITICAL) - self.log.addHandler(logging.NullHandler) - - def clientConnectionFailed(self, connector, reason): - """ - Only necessary for as debugging aid - if we can somehow set parent's class noisy attribute then we can omit this method - """ - self.log.warning('IPAFactory connection failed: %s' % reason.getErrorMessage()) - ReconnectingClientFactory.clientConnectionFailed(self, connector, reason) - - def clientConnectionLost(self, connector, reason): - """ - Only necessary for as debugging aid - if we can somehow set parent's class noisy attribute then we can omit this method - """ - self.log.warning('IPAFactory connection lost: %s' % reason.getErrorMessage()) - ReconnectingClientFactory.clientConnectionLost(self, connector, reason) - - -if __name__ == '__main__': - p = argparse.ArgumentParser("Twisted IPA (module v%s) app" % IPA.version) - p.add_argument('-v', '--version', action='version', version="%(prog)s v" + __version__) - p.add_argument('-p', '--port', type=int, default=4250, help="Port to use for CTRL interface") - p.add_argument('-d', '--host', default='localhost', help="Adress to use for CTRL interface") - cs = p.add_mutually_exclusive_group() - cs.add_argument("-c", "--client", action='store_true', help="asume client role") - cs.add_argument("-s", "--server", action='store_true', help="asume server role") - ic = p.add_mutually_exclusive_group() - ic.add_argument("--ipa", action='store_true', help="use IPA protocol") - ic.add_argument("--ctrl", action='store_true', help="use CTRL protocol") - args = p.parse_args() - test = False - - log = logging.getLogger('TwistedIPA') - log.setLevel(logging.DEBUG) - log.addHandler(logging.StreamHandler(sys.stdout)) - - if args.ctrl: - if args.client: - # Start osmo-bsc to receive TRAP messages when osmo-bts-* connects to it - print('CTRL client, connecting to %s:%d' % (args.host, args.port)) - reactor.connectTCP(args.host, args.port, IPAFactory(CTRL, log)) - test = True - if args.server: - # Use bsc_control.py to issue set/get commands - print('CTRL server, listening on port %d' % args.port) - reactor.listenTCP(args.port, IPAFactory(CtrlServer, log)) - test = True - if args.ipa: - if args.client: - # Start osmo-nitb which would initiate A-bis/IP session - print('IPA client, connecting to %s ports %d and %d' % (args.host, IPA.TCP_PORT_OML, IPA.TCP_PORT_RSL)) - reactor.connectTCP(args.host, IPA.TCP_PORT_OML, IPAFactory(CCM, log)) - reactor.connectTCP(args.host, IPA.TCP_PORT_RSL, IPAFactory(CCM, log)) - test = True - if args.server: - # Start osmo-bts-* which would attempt to connect to us - print('IPA server, listening on ports %d and %d' % (IPA.TCP_PORT_OML, IPA.TCP_PORT_RSL)) - reactor.listenTCP(IPA.TCP_PORT_RSL, IPAFactory(IPAServer, log)) - reactor.listenTCP(IPA.TCP_PORT_OML, IPAFactory(IPAServer, log)) - test = True - if test: - reactor.run() - else: - print("Please specify which protocol in which role you'd like to test.") |