204 lines
8.5 KiB
Python
204 lines
8.5 KiB
Python
# osmo_gsm_tester: specifics for running an SRS EPC process
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#
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# Copyright (C) 2020 by sysmocom - s.f.m.c. GmbH
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#
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# Author: Pau Espin Pedrol <pespin@sysmocom.de>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import os
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import pprint
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from ..core import log, util, config, template, process, remote
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from ..core import schema
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from . import epc
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def on_register_schemas():
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config_schema = {
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'license_server_addr': schema.IPV4,
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}
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schema.register_config_schema('amarisoft', config_schema)
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class AmarisoftEPC(epc.EPC):
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REMOTE_DIR = '/osmo-gsm-tester-amarisoftepc'
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BINFILE = 'ltemme'
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CFGFILE = 'amarisoft_ltemme.cfg'
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LOGFILE = 'ltemme.log'
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IFUPFILE = 'mme-ifup'
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def __init__(self, testenv, run_node):
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super().__init__(testenv, run_node, 'amarisoftepc')
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self.run_dir = None
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self.config_file = None
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self.log_file = None
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self.ifup_file = None
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self.process = None
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self.rem_host = None
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self.remote_run_dir = None
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self.remote_inst = None
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self.remote_config_file = None
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self.remote_log_file = None
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self.remote_ifup_file =None
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self._bin_prefix = None
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self.inst = None
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self.subscriber_list = []
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def bin_prefix(self):
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if self._bin_prefix is None:
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self._bin_prefix = os.getenv('AMARISOFT_PATH_EPC', None)
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if self._bin_prefix == None:
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self._bin_prefix = self.testenv.suite().trial().get_inst('amarisoftepc', self._run_node.run_label())
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return self._bin_prefix
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def cleanup(self):
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if self.process is None:
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return
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if self._run_node.is_local():
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return
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# copy back files (may not exist, for instance if there was an early error of process):
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try:
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self.rem_host.scpfrom('scp-back-log', self.remote_log_file, self.log_file)
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except Exception as e:
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self.log(repr(e))
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def start(self):
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self.log('Starting amarisoftepc')
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self.run_dir = util.Dir(self.testenv.test().get_run_dir().new_dir(self.name()))
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self.configure()
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if self._run_node.is_local():
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self.start_locally()
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else:
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self.start_remotely()
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def start_remotely(self):
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remote_binary = self.remote_inst.child('', AmarisoftEPC.BINFILE)
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# setting capabilities will later disable use of LD_LIBRARY_PATH from ELF loader -> modify RPATH instead.
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self.log('Setting RPATH for amarisoftepc')
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self.rem_host.change_elf_rpath(remote_binary, str(self.remote_inst))
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# amarisoftepc requires CAP_NET_ADMIN to create tunnel devices: ioctl(TUNSETIFF):
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self.log('Applying CAP_NET_ADMIN capability to amarisoftepc')
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self.rem_host.setcap_net_admin(remote_binary)
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args = (remote_binary, self.remote_config_file)
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self.process = self.rem_host.RemoteProcessSafeExit(AmarisoftEPC.BINFILE, self.remote_run_dir, args)
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self.testenv.remember_to_stop(self.process)
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self.process.launch()
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def start_locally(self):
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binary = self.inst.child('', BINFILE)
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env = {}
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# setting capabilities will later disable use of LD_LIBRARY_PATH from ELF loader -> modify RPATH instead.
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self.log('Setting RPATH for amarisoftepc')
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util.change_elf_rpath(binary, util.prepend_library_path(str(self.inst)), self.run_dir.new_dir('patchelf'))
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# amarisoftepc requires CAP_NET_ADMIN to create tunnel devices: ioctl(TUNSETIFF):
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self.log('Applying CAP_NET_ADMIN capability to amarisoftepc')
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util.setcap_net_admin(binary, self.run_dir.new_dir('setcap_net_admin'))
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self.dbg(run_dir=self.run_dir, binary=binary, env=env)
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args = (binary, os.path.abspath(self.config_file))
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self.process = process.Process(self.name(), self.run_dir, args, env=env)
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self.testenv.remember_to_stop(self.process)
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self.process.launch()
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def configure(self):
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self.inst = util.Dir(os.path.abspath(self.bin_prefix()))
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if not self.inst.isfile('', AmarisoftEPC.BINFILE):
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raise log.Error('No %s binary in' % AmarisoftEPC.BINFILE, self.inst)
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self.config_file = self.run_dir.child(AmarisoftEPC.CFGFILE)
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self.log_file = self.run_dir.child(AmarisoftEPC.LOGFILE)
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self.ifup_file = self.run_dir.new_file(AmarisoftEPC.IFUPFILE)
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os.chmod(self.ifup_file, 0o744) # add execution permission
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self.dbg(config_file=self.config_file)
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with open(self.ifup_file, 'w') as f:
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r = '''#!/bin/sh
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set -x -e
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# script + sudoers file available in osmo-gsm-tester.git/utils/{bin,sudoers.d}
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sudo /usr/local/bin/osmo-gsm-tester_amarisoft_ltemme_ifup.sh "$@"
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'''
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f.write(r)
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if not self._run_node.is_local():
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self.rem_host = remote.RemoteHost(self.run_dir, self._run_node.ssh_user(), self._run_node.ssh_addr())
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remote_prefix_dir = util.Dir(AmarisoftEPC.REMOTE_DIR)
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self.remote_inst = util.Dir(remote_prefix_dir.child(os.path.basename(str(self.inst))))
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self.remote_run_dir = util.Dir(remote_prefix_dir.child(AmarisoftEPC.BINFILE))
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self.remote_config_file = self.remote_run_dir.child(AmarisoftEPC.CFGFILE)
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self.remote_log_file = self.remote_run_dir.child(AmarisoftEPC.LOGFILE)
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self.remote_ifup_file = self.remote_run_dir.child(AmarisoftEPC.IFUPFILE)
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values = super().configure(['amarisoft', 'amarisoftepc'])
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logfile = self.log_file if self._run_node.is_local() else self.remote_log_file
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ifupfile = self.ifup_file if self._run_node.is_local() else self.remote_ifup_file
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config.overlay(values, dict(epc=dict(log_filename=logfile,
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ifup_filename=ifupfile)))
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config.overlay(values, dict(epc=dict(hss=dict(subscribers=self.subscriber_list))))
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self.dbg('SRSEPC CONFIG:\n' + pprint.pformat(values))
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with open(self.config_file, 'w') as f:
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r = template.render(AmarisoftEPC.CFGFILE, values)
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self.dbg(r)
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f.write(r)
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if not self._run_node.is_local():
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self.rem_host.recreate_remote_dir(self.remote_inst)
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self.rem_host.scp('scp-inst-to-remote', str(self.inst), remote_prefix_dir)
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self.rem_host.recreate_remote_dir(self.remote_run_dir)
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self.rem_host.scp('scp-cfg-to-remote', self.config_file, self.remote_config_file)
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self.rem_host.scp('scp-ifup-to-remote', self.ifup_file, self.remote_ifup_file)
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def subscriber_add(self, modem, msisdn=None, algo_str=None):
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if msisdn is None:
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msisdn = self.testenv.msisdn()
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modem.set_msisdn(msisdn)
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if algo_str is None:
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algo_str = modem.auth_algo() or util.OSMO_AUTH_ALGO_NONE
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if algo_str != util.OSMO_AUTH_ALGO_NONE and not modem.ki():
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raise log.Error("Auth algo %r selected but no KI specified" % algo_str)
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if algo_str == 'milenage' and not modem.opc():
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raise log.Error("Auth algo milenage selected but no OPC specified")
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subscriber_id = len(self.subscriber_list) # list index
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self.subscriber_list.append({'id': subscriber_id, 'imsi': modem.imsi(), 'msisdn': msisdn, 'auth_algo': algo_str, 'ki': modem.ki(), 'opc': modem.opc(), 'apn_ipaddr': modem.apn_ipaddr()})
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self.log('Add subscriber', msisdn=msisdn, imsi=modem.imsi(), subscriber_id=subscriber_id,
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algo_str=algo_str)
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return subscriber_id
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def enb_is_connected(self, enb):
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# TODO: improve this a bit, like matching IP addr of enb. CTRL iface?
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# The string is only available in log file, not in stdout:
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#return 'S1 setup response' in (self.process.get_stdout() or '')
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return True
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def running(self):
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return not self.process.terminated()
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def tun_addr(self):
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# TODO: set proper addr
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return '192.168.4.1'
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# vim: expandtab tabstop=4 shiftwidth=4
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