def init_idents(self,
ind_gummei=None,
ind_plmn=None,
ind_gid=None,
ind_mmec=None):
#
# initializing indexes for the MMEd instance
if ind_gummei is not None and ind_gummei != self._ind_gummei:
self._ind_gummei = ind_gummei
self._log('WNG', 'changing MME GUMMEI index')
if ind_plmn is not None and ind_plmn != self._ind_plmn:
self._ind_plmn = ind_plmn
self._log('WNG', 'changing MME PLMN index')
if ind_gid is not None and ind_gid != self._ind_gid:
self._ind_gid = ind_gid
self._log('WNG', 'changing MME index')
if ind_mmec is not None and ind_mmec != self._ind_mmec:
self._ind_mmec = ind_mmec
self._log('WNG', 'changing MME index')
#
# selecting the right identifier indexed and setting the right value
# for the MMEd instance
if self._ind_gummei >= len(self.ConfigS1['ServedGUMMEIs']):
gummei = self.ConfigS1['ServedGUMMEIs'][0]
self._log('WNG', 'invalid MME GUMMEI index')
else:
gummei = self.ConfigS1['ServedGUMMEIs'][self._ind_gummei]
#
if self._ind_plmn >= len(gummei['servedPLMNs']):
self.MME_PLMN_BUF = gummei['servedPLMNs'][0]
self._log('WNG', 'invalid MME PLMN index')
else:
self.MME_PLMN_BUF = gummei['servedPLMNs'][self._ind_plmn]
plmn = PLMN()
plmn.map(self.MME_PLMN_BUF)
self.MME_PLMN = plmn.get_mccmnc()
#
if self._ind_gid >= len(gummei['servedGroupIDs']):
self.MME_GID_BUF = gummei['servedGroupIDs'][0]
self._log('WNG', 'invalid MME Group ID index')
else:
self.MME_GID_BUF = gummei['servedGroupIDs'][self._ind_gid]
self.MME_GID = unpack('!H', self.MME_GID_BUF)[0]
#
if self._ind_mmec >= len(gummei['servedMMECs']):
self.MME_MMEC_BUF = gummei['servedMMECs'][0]
self._log('WNG', 'invalid MME Group ID index')
else:
self.MME_MMEC_BUF = gummei['servedMMECs'][self._ind_mmec]
self.MME_MMEC = ord(self.MME_MMEC_BUF)
#
self.MME_GUMMEI = '{0}.{1}.{2}.{3}'.format(plmn.get_mcc(),
plmn.get_mnc(),
hexlify(self.MME_GID_BUF),
hexlify(self.MME_MMEC_BUF))
def handle_s1setup(self, sk, pdu):
# get protocolIEs' values
protIEs = pdu[1]['value'][1]['protocolIEs']
# get the eNB Global ID
plmn_id, enb_id = None, None
for protIE in protIEs:
if protIE['id'] == 59:
enb_id_bitstr = protIE['value'][1]['eNB-ID'][1]
plmn_id_octstr = protIE['value'][1]['pLMNidentity']
# convert to readable values:
# 1) enb id
if enb_id_bitstr[1] == 20:
# macroENB-ID
enb_id = '%.5x' % enb_id_bitstr[0]
elif enb_id_bitstr[1] == 28:
# homeENB-ID
enb_id = '%.7x' % enb_id_bitstr[0]
# 2) plmn id
plmn_id = PLMN()
plmn_id.map(plmn_id_octstr)
plmn_id = plmn_id.get_mccmnc()
#
if plmn_id and enb_id:
enb_gid = (plmn_id, enb_id)
# create / reset the eNB handler instance
ret = self.create_enb_handler(enb_gid, sk)
if not ret:
# eNB not allowed
self.send_enb_err(sk, cause=('misc', 'unknown-PLMN'))
self._log(
'WNG',
'[eNB: {0}] eNB not allowed, closing S1AP stream'.format(
enb_gid))
sk.close()
return
#
self._log('INF',
'[eNB: {0}] S1AP stream established'.format(enb_gid))
# process the PDU in the context of the eNB handler
#'''
try:
ret_pdu = self.ENB[enb_gid].process_pdu(pdu)
except Exception as err:
self._exc = sys.exc_info()
self._log(
'ERR',
'something went wrong in the ENBmgr code: {0}'.format(err))
print('ERROR: something went wrong in the ENBmgr code:\n{0}'.
format(err))
traceback.print_tb(self._exc[2])
else:
self.add_enb(enb_gid)
for pdu in ret_pdu:
self.send_enb(sk, pdu)
def init_idents(self, ind_gummei=None, ind_plmn=None, ind_gid=None, ind_mmec=None):
#
# initializing indexes for the MMEd instance
if ind_gummei is not None and ind_gummei != self._ind_gummei:
self._ind_gummei = ind_gummei
self._log('WNG', 'changing MME GUMMEI index')
if ind_plmn is not None and ind_plmn != self._ind_plmn:
self._ind_plmn = ind_plmn
self._log('WNG', 'changing MME PLMN index')
if ind_gid is not None and ind_gid != self._ind_gid:
self._ind_gid = ind_gid
self._log('WNG', 'changing MME index')
if ind_mmec is not None and ind_mmec != self._ind_mmec:
self._ind_mmec = ind_mmec
self._log('WNG', 'changing MME index')
#
# selecting the right identifier indexed and setting the right value for the MMEd instance
if self._ind_gummei >= len(self.ConfigS1['ServedGUMMEIs']):
gummei = self.ConfigS1['ServedGUMMEIs'][0]
self._log('WNG', 'invalid MME GUMMEI index')
else:
gummei = self.ConfigS1['ServedGUMMEIs'][self._ind_gummei]
#
if self._ind_plmn >= len(gummei['servedPLMNs']):
self.MME_PLMN_BUF = gummei['servedPLMNs'][0]
self._log('WNG', 'invalid MME PLMN index')
else:
self.MME_PLMN_BUF = gummei['servedPLMNs'][self._ind_plmn]
plmn = PLMN()
plmn.map(self.MME_PLMN_BUF)
self.MME_PLMN = plmn.get_mccmnc()
#
if self._ind_gid >= len(gummei['servedGroupIDs']):
self.MME_GID_BUF = gummei['servedGroupIDs'][0]
self._log('WNG', 'invalid MME Group ID index')
else:
self.MME_GID_BUF = gummei['servedGroupIDs'][self._ind_gid]
self.MME_GID = unpack('!H', self.MME_GID_BUF)[0]
#
if self._ind_mmec >= len(gummei['servedMMECs']):
self.MME_MMEC_BUF = gummei['servedMMECs'][0]
self._log('WNG', 'invalid MME Group ID index')
else:
self.MME_MMEC_BUF = gummei['servedMMECs'][self._ind_mmec]
self.MME_MMEC = ord(self.MME_MMEC_BUF)
#
self.MME_GUMMEI = '{0}.{1}.{2}.{3}'.format(plmn.get_mcc(),
plmn.get_mnc(),
hexlify(self.MME_GID_BUF),
hexlify(self.MME_MMEC_BUF))
def handle_s1setup(self, sk, pdu):
# get protocolIEs' values
protIEs = pdu[1]['value'][1]['protocolIEs']
# get the eNB Global ID
plmn_id, enb_id = None, None
for protIE in protIEs:
if protIE['id'] == 59:
enb_id_bitstr = protIE['value'][1]['eNB-ID'][1]
plmn_id_octstr = protIE['value'][1]['pLMNidentity']
# convert to readable values:
# 1) enb id
if enb_id_bitstr[1] == 20:
# macroENB-ID
enb_id = '%.5x' % enb_id_bitstr[0]
elif enb_id_bitstr[1] == 28:
# homeENB-ID
enb_id = '%.7x' % enb_id_bitstr[0]
# 2) plmn id
plmn_id = PLMN()
plmn_id.map(plmn_id_octstr)
plmn_id = plmn_id.get_mccmnc()
#
if plmn_id and enb_id:
enb_gid = (plmn_id, enb_id)
# create / reset the eNB handler instance
ret = self.create_enb_handler(enb_gid, sk)
if not ret:
# eNB not allowed
self.send_enb_err(sk, cause=('misc', 'unknown-PLMN'))
self._log('WNG', '[eNB: {0}] eNB not allowed, closing S1AP stream'.format(enb_gid))
sk.close()
return
#
self._log('INF', '[eNB: {0}] S1AP stream established'.format(enb_gid))
# process the PDU in the context of the eNB handler
#'''
try:
ret_pdu = self.ENB[enb_gid].process_pdu(pdu)
except Exception as err:
self._exc = sys.exc_info()
self._log('ERR', 'something went wrong in the ENBmgr code: {0}'.format(err))
print('ERROR: something went wrong in the ENBmgr code:\n{0}'.format(err))
traceback.print_tb(self._exc[2])
else:
self.add_enb(enb_gid)
for pdu in ret_pdu:
self.send_enb(sk, pdu)
