mirror of
https://git.kernel.org/pub/scm/network/wireless/iwd.git
synced 2024-11-20 04:19:25 +01:00
7c61d0365e
Included an HLR AuC python implementation that is required by hostapd. This is what hostapd uses to retrieve SIM card values over a UNIX socket.
65 lines
2.0 KiB
Python
65 lines
2.0 KiB
Python
import socket
|
|
import os
|
|
import threading
|
|
from Crypto.Cipher import AES
|
|
|
|
class AuthCenter:
|
|
'''
|
|
Home Location Register (HLR) and Authentication Center (AuC) used for
|
|
for retrieving SIM/AKA values. This provides a UDP server that
|
|
hostapd can communicate with to obtain SIM values.
|
|
'''
|
|
def __init__(self, sock_path, config_file):
|
|
self._read_config(config_file)
|
|
self._socket = socket.socket(socket.AF_UNIX, socket.SOCK_DGRAM)
|
|
self._socket.setblocking(0)
|
|
if os.path.isfile(sock_path):
|
|
os.unlink(sock_path)
|
|
self._socket.bind(sock_path)
|
|
|
|
self._rxhandle = threading.Thread(target=self._rx_thread)
|
|
self._rxhandle.shutdown = False
|
|
self._rxhandle.start()
|
|
|
|
def _rx_thread(self):
|
|
while (True):
|
|
if self._rxhandle.shutdown == True:
|
|
break
|
|
try:
|
|
data, addr = self._socket.recvfrom(1000)
|
|
data = data.decode('ascii')
|
|
resp = self._process_data(data)
|
|
except:
|
|
continue
|
|
if resp:
|
|
self._socket.sendto(bytearray(resp, 'UTF-8'), addr)
|
|
|
|
def _read_config(self, file):
|
|
self._database = {}
|
|
with open(file) as f:
|
|
for line in f:
|
|
if line[0] == '#':
|
|
continue
|
|
else:
|
|
data = line.split(':')
|
|
self._database[data[0]] = ':'.join(data[1:])
|
|
|
|
def _process_data(self, data):
|
|
if data[:12] == "SIM-REQ-AUTH":
|
|
# SIM requests just return the stored values for the IMSI
|
|
imsi, num_chals = data[13:].split(' ')
|
|
data = self._database[imsi]
|
|
|
|
response = "SIM-RESP-AUTH %s" % imsi
|
|
response += (' ' + data)*int(num_chals)
|
|
|
|
return response
|
|
|
|
def stop(self):
|
|
'''
|
|
Stop the Authentication server and close the socket
|
|
'''
|
|
self._rxhandle.shutdown = True
|
|
self._rxhandle.join()
|
|
self._socket.close()
|