96 lines
2.9 KiB
Python
96 lines
2.9 KiB
Python
# imsi.py - functions for handling International Mobile Subscriber Identity
|
|
# (IMSI) numbers
|
|
#
|
|
# Copyright (C) 2011, 2012, 2013 Arthur de Jong
|
|
#
|
|
# This library is free software; you can redistribute it and/or
|
|
# modify it under the terms of the GNU Lesser General Public
|
|
# License as published by the Free Software Foundation; either
|
|
# version 2.1 of the License, or (at your option) any later version.
|
|
#
|
|
# This library is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
# Lesser General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU Lesser General Public
|
|
# License along with this library; if not, write to the Free Software
|
|
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
|
# 02110-1301 USA
|
|
|
|
"""IMSI (International Mobile Subscriber Identity).
|
|
|
|
The IMSI (International Mobile Subscriber Identity) is used to identify
|
|
mobile phone users (the SIM).
|
|
|
|
>>> validate('429011234567890')
|
|
'429011234567890'
|
|
>>> validate('439011234567890') # unknown MCC
|
|
Traceback (most recent call last):
|
|
...
|
|
InvalidFormat: ...
|
|
>>> split('429011234567890')
|
|
('429', '01', '1234567890')
|
|
>>> split('310150123456789')
|
|
('310', '150', '123456789')
|
|
>>> info('460001234567890')['mcc']
|
|
'460'
|
|
>>> str(info('460001234567890')['country'])
|
|
'China'
|
|
"""
|
|
|
|
from stdnum.exceptions import *
|
|
from stdnum.util import clean
|
|
|
|
|
|
def compact(number):
|
|
"""Convert the IMSI number to the minimal representation. This strips the
|
|
number of any valid separators and removes surrounding whitespace."""
|
|
return clean(number, ' -').strip().upper()
|
|
|
|
|
|
def split(number):
|
|
"""Split the specified IMSI into a Mobile Country Code (MCC), a Mobile
|
|
Network Code (MNC), a Mobile Station Identification Number (MSIN)."""
|
|
from stdnum import numdb
|
|
# clean up number
|
|
number = compact(number)
|
|
# split the number
|
|
return tuple(numdb.get('imsi').split(number))
|
|
|
|
|
|
def validate(number):
|
|
"""Checks to see if the number provided is a valid IMSI."""
|
|
number = compact(number)
|
|
if not number.isdigit():
|
|
raise InvalidFormat()
|
|
if len(number) not in (14, 15):
|
|
raise InvalidLength()
|
|
if len(split(number)) != 3:
|
|
raise InvalidFormat()
|
|
return number
|
|
|
|
|
|
def info(number):
|
|
"""Return a dictionary of data about the supplied number."""
|
|
from stdnum import numdb
|
|
# clean up number
|
|
number = compact(number)
|
|
# split the number
|
|
info = dict(number=number)
|
|
mcc_info, mnc_info, msin_info = numdb.get('imsi').info(number)
|
|
info['mcc'] = mcc_info[0]
|
|
info.update(mcc_info[1])
|
|
info['mnc'] = mnc_info[0]
|
|
info.update(mnc_info[1])
|
|
info['msin'] = msin_info[0]
|
|
info.update(msin_info[1])
|
|
return info
|
|
|
|
|
|
def is_valid(number):
|
|
"""Checks to see if the number provided is a valid IMSI."""
|
|
try:
|
|
return bool(validate(number))
|
|
except ValidationError:
|
|
return False
|