def test_attach_detach_security_algo_eea0_eia0(self):
"""
Basic attach/detach test case with following security algorithms:
Encryption algorithm type : EEA0 (Null Ciphering algorithm)
Integrity algorithm type : EIA0 (Null Integrity algorithm)
The preferred Encryption/Integrity algorythms to be selected by the
network can be changed by manually modifying the order of preference of
algorithms in mme.conf.template file
"""
num_ues = 2
detach_type = [
s1ap_types.ueDetachType_t.UE_NORMAL_DETACH.value,
s1ap_types.ueDetachType_t.UE_SWITCHOFF_DETACH.value,
]
wait_for_s1 = [True, False]
# Configure Encryption/Integrity algorithms for UE Network Capabilities
config_list = []
for i in range(num_ues):
config_list.append(s1ap_types.ueConfig_t())
config_list[i].ueNwCap_pr.pres = 1
config_list[i].ueNwCap_pr.eea2_128 = 0
config_list[i].ueNwCap_pr.eea1_128 = 0
config_list[i].ueNwCap_pr.eea0 = 1
config_list[i].ueNwCap_pr.eia2_128 = 0
config_list[i].ueNwCap_pr.eia1_128 = 0
config_list[i].ueNwCap_pr.eia0 = 1
self._s1ap_wrapper.configUEDevice(num_ues, req_data=config_list)
for i in range(num_ues):
req = self._s1ap_wrapper.ue_req
print(
"************************* Running End to End attach for ",
"UE id ",
req.ue_id,
)
# Now actually complete the attach
self._s1ap_wrapper._s1_util.attach(
req.ue_id,
s1ap_types.tfwCmd.UE_END_TO_END_ATTACH_REQUEST,
s1ap_types.tfwCmd.UE_ATTACH_ACCEPT_IND,
s1ap_types.ueAttachAccept_t,
)
# Wait on EMM Information from MME
self._s1ap_wrapper._s1_util.receive_emm_info()
print(
"************************* Running UE detach for UE id ",
req.ue_id,
)
# Now detach the UE
self._s1ap_wrapper.s1_util.detach(
req.ue_id,
detach_type[i],
wait_for_s1[i],
)
def _get_s1ap_sub(self, sid):
"""
Get the subscriber data in s1aptester format.
Args:
The string representation of the subscriber id
"""
ue_cfg = s1ap_types.ueConfig_t()
ue_cfg.ue_id = self._ue_id
ue_cfg.auth_key = 1
# Some s1ap silliness, the char field is modelled as an int and then
# cast into a uint8.
for i in range(0, 15):
ue_cfg.imsi[i] = ctypes.c_ubyte(int(sid[4 + i]))
ue_cfg.imei[i] = ctypes.c_ubyte(int("1"))
ue_cfg.imei[15] = ctypes.c_ubyte(int("1"))
ue_cfg.imsiLen = self.IMSI_LEN
self._ue_cfgs.append(ue_cfg)
self._ue_id += 1
return ue_cfg
