188 lines
7.6 KiB
Python
188 lines
7.6 KiB
Python
#!/usr/bin/python
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import mncc
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import ctypes
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import pykka
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from fysom import Fysom
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from mncc_sock import mncc_msg, mncc_number
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class GsmCallFsm(pykka.ThreadingActor):
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last_callref = 0
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def _get_next_callref(self):
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GsmCallFsm.last_callref = GsmCallFsm.last_callref + 1
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return GsmCallFsm.last_callref;
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def _printstatechange(self, e):
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print 'GsmCallFsm(%u/%s): event: %s, %s -> %s' % (self.callref, self.called, e.event, e.src, e.dst)
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if self.ctrl_ref != None:
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self.ctrl_ref.tell({'type':'call_state_change', 'called':self.called, 'old_state':e.src, 'new_state':e.dst})
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def _onmncc_setup_req(self, e):
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msg = mncc_msg(msg_type = mncc.MNCC_SETUP_REQ, callref = self.callref,
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fields = mncc.MNCC_F_CALLED | mncc.MNCC_F_CALLING,
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calling = mncc_number(self.calling),
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called = mncc_number(self.called))
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self.mncc_ref.tell({'type': 'send', 'msg': msg})
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def _onmncc_setup_cnf(self, e):
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# send MNCC_SETUP_COMPL_REQ to MNCC interface, causing
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# CC-CONNECT-ACK to be sent to MS
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msg = mncc_msg(msg_type = mncc.MNCC_SETUP_COMPL_REQ)
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self.mncc_ref.tell({'send', msg})
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def _onenter_NULL(self, e):
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if e.event != 'startup':
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self.stop()
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def __init__(self, mncc_ref, ctrl_ref = None):
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super(GsmCallFsm, self).__init__()
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self.mncc_ref = mncc_ref;
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self.callref = self._get_next_callref()
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self.ctrl_ref = ctrl_ref
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self.fsm = Fysom(initial = 'NULL',
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events = [
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# MT call setup
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('mncc_setup_req', 'NULL', 'CALL_PRESENT'),
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('mncc_rel_ind', 'CALL_PRESENT', 'NULL'),
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('mncc_call_conf_ind', 'CALL_PRESENT', 'MT_CALL_CONFIRMED'),
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('mncc_alert_ind', 'MT_CALL_CONFIRMED', 'CALL_RECEIVED'),
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('mncc_setup_cnf', 'CALL_RECEIVED', 'CONNECT_REQUEST'),
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('mncc_setup_cnf', 'MT_CALL_CONFIRMED', 'CONNECT_REQUEST'),
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('mncc_setup_compl_req', 'CONNECT_REQUEST', 'ACTIVE'),
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# MO call setup
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# SETUP INDICATION (MS->MNCC)
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('mncc_setup_ind', 'NULL', 'CALL_INIT'),
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# CALL PROCEEDING REQ (MNCC->MS)
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('mncc_call_proc_req', 'CALL_INIT', 'MO_CALL_PROC'),
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# SETUP RESPONSE (MS->MNCC)
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('mncc_setup_resp', 'MO_CALL_PROC', 'CONNECT_INDICATION'),
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# ALERT REQ (MNCC->MS)
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('mncc_alert_req', 'MO_CALL_PROC', 'CALL_DELIVERED'),
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# SETUP RESPONSE (MS->MNCC)
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('mncc_setup_resp', 'CALL_DELIVERED', 'CONNECT_INDICATION'),
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# PROGRESS REQ (MNCC->MS)
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('mncc_progress_req', 'MO_CALL_PROC', 'MO_CALL_PROC'),
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# SETUP COMPL IND (MS->MNCC)
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('mncc_setup_compl_ind', 'CONNECT_INDICATION', 'ACTIVE'),
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('mncc_disc_ind', ['CALL_INIT', 'MO_CALL_PROC',
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'CALL_RECEIVED', 'CONNECT_REQUEST',
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'MT_CALL_CONFIRMED', 'ACTIVE',
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'CONNECT_INDICATION'], 'RELEASE_REQUEST'),
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('mncc_disc_req', ['CALL_INIT', 'MO_CALL_PROC',
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'CALL_RECEIVED', 'CONNECT_REQUEST',
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'MT_CALL_CONFIRMED', 'ACTIVE',
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'CONNECT_INDICATION'], 'DISCONNECT_INDICATION'),
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('mncc_rel_ind', 'DISCONNECT_INDICATION', 'NULL'),
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('mncc_disc_ind', 'DISCONNECT_INDICATION', 'RELEASE_REQUEST'),
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('mncc_rel_cnf', 'RELEASE_REQUEST', 'NULL')
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],
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callbacks = [('onmncc_setup_req', self._onmncc_setup_req),
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('onmncc_setup_cnf', self._onmncc_setup_cnf),
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('onenterNULL', self._onenter_NULL),
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],
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)
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self.fsm.onchangestate = self._printstatechange
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def start_mt_call(self, calling, called):
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self.calling = calling
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self.called = called
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self.fsm.mncc_setup_req()
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# MT call
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def _do_mncc_rel_ind(self, mncc_msg):
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self.fsm.mncc_rel_ind(mncc_msg)
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def _do_mncc_call_conf_ind(self, mncc_msg):
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self.fsm.mncc_call_conf_ind(mncc_msg)
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def _do_mncc_alert_ind(self, mncc_msg):
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self.fsm.mncc_allert_ind(mncc_msg)
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def _do_mncc_setup_cnf(self, mncc_msg):
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self.fsm.mncc_setup_cnf(mncc_msg)
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# MO call
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def _do_mncc_setup_ind(self, mncc_msg):
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self.fsm.mncc_setup_ind(mncc_msg)
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def _do_mncc_setup_compl_ind(self, mncc_msg):
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self.fsm.mncc_setup_compl_ind(mncc_msg)
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# Misc
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def _do_mncc_disc_ind(self, mncc_msg):
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self.fsm.mncc_disc_ind(mncc_msg)
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def _do_mncc_rel_ind(self, mncc_msg):
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self.fsm.mncc_rel_ind(mncc_msg)
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def _do_mncc_rel_cnf(self, mncc_msg):
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self.fsm.mncc_rel_cnf(mncc_msg)
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_func_by_type = {
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# MT call
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mncc.MNCC_REL_IND: _do_mncc_rel_ind,
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mncc.MNCC_CALL_CONF_IND: _do_mncc_call_conf_ind,
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mncc.MNCC_ALERT_IND: _do_mncc_alert_ind,
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mncc.MNCC_SETUP_CNF: _do_mncc_setup_cnf,
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# MO call
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mncc.MNCC_SETUP_IND: _do_mncc_setup_ind,
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mncc.MNCC_SETUP_COMPL_IND: _do_mncc_setup_compl_ind,
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# misc
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mncc.MNCC_DISC_IND: _do_mncc_disc_ind,
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mncc.MNCC_REL_IND: _do_mncc_rel_ind,
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mncc.MNCC_REL_CNF: _do_mncc_rel_cnf,
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}
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def _lookup_method(self, mncc_msg_type):
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return self._func_by_type[mncc_msg_type]
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def _handle_mncc(self, mncc_msg):
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if mncc_msg.callref != self.callref:
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raise Exception('mncc', 'Callref not for this GsmCallFsm')
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self._lookup_method(mncc_msg.msg_type)(self, mncc_msg)
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# pykka Actor message receiver
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def on_receive(self, message):
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print 'GsmCallFsm(%u):on_receive(%s)' % (self.callref, message)
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if message['type'] == 'mncc':
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msg = message['msg']
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if msg.callref == self.callref:
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return self._handle_mncc(msg)
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elif message['type'] == 'start_mt_call':
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self.start_mt_call(message['calling'], message['called'])
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else:
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raise Exception('mncc', 'Unknown message %s' % message)
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class GsmCallConnector(pykka.ThreadingActor):
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def __init__(self, mncc_act):
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super(GsmCallConnector, self).__init__()
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self.mncc_act = mncc_act
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print 'Starting Call A actor'
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self.call_a = GsmCallFsm.start(self.mncc_act, self.actor_ref)
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print 'Starting Call B actor'
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self.call_b = GsmCallFsm.start(self.mncc_act, self.actor_ref)
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def start_call_ab(self, msisdn_a, msisdn_b):
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print 'Starting calls for A and B'
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self.msisdn_a = msisdn_a
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self.msisdn_b = msisdn_b
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# start MT call A->B
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print 'Starting Call A->B'
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self.call_a.tell({'type':'start_mt_call', 'calling':self.msisdn_a, 'called':self.msisdn_b})
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# start MT call B->A
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print 'Starting Call B->A'
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self.call_b.tell({'type':'start_mt_call', 'calling':self.msisdn_b, 'called':self.msisdn_a})
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def call_state_change(self, msisdn, old_state, new_state):
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print 'CallConnector:leg_state_change(%s) %s -> %s' % (msisdn, old_state, new_state)
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def on_receive(self, message):
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if message['type'] == 'call_state_change':
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self.call_state_change(message['called'], message['old_state'], message['new_state'])
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