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#!/usr/bin/env python
# -*- coding: utf-8 -*-
""" pySim: SIM Card commands according to ISO 7816-4 and TS 11.11
"""
#
# Copyright (C) 2009-2010 Sylvain Munaut <tnt@246tNt.com>
# Copyright (C) 2010 Harald Welte <laforge@gnumonks.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
from pySim.utils import rpad, b2h
class SimCardCommands(object):
def __init__(self, transport):
self._tp = transport;
def select_file(self, dir_list):
rv = []
for i in dir_list:
data, sw = self._tp.send_apdu_checksw("a0a4000002" + i)
rv.append(data)
return rv
def read_binary(self, ef, length=None, offset=0):
if not hasattr(type(ef), '__iter__'):
ef = [ef]
r = self.select_file(ef)
if length is None:
length = int(r[-1][4:8], 16) - offset
pdu = 'a0b0%04x%02x' % (offset, (min(256, length) & 0xff))
return self._tp.send_apdu(pdu)
def update_binary(self, ef, data, offset=0):
if not hasattr(type(ef), '__iter__'):
ef = [ef]
self.select_file(ef)
pdu = 'a0d6%04x%02x' % (offset, len(data)/2) + data
return self._tp.send_apdu(pdu)
def read_record(self, ef, rec_no):
if not hasattr(type(ef), '__iter__'):
ef = [ef]
r = self.select_file(ef)
rec_length = int(r[-1][28:30], 16)
pdu = 'a0b2%02x04%02x' % (rec_no, rec_length)
return self._tp.send_apdu(pdu)
def update_record(self, ef, rec_no, data, force_len=False):
if not hasattr(type(ef), '__iter__'):
ef = [ef]
r = self.select_file(ef)
if not force_len:
rec_length = int(r[-1][28:30], 16)
if (len(data)/2 != rec_length):
raise ValueError('Invalid data length (expected %d, got %d)' % (rec_length, len(data)/2))
else:
rec_length = len(data)/2
pdu = ('a0dc%02x04%02x' % (rec_no, rec_length)) + data
return self._tp.send_apdu(pdu)
def record_size(self, ef):
r = self.select_file(ef)
return int(r[-1][28:30], 16)
def record_count(self, ef):
r = self.select_file(ef)
return int(r[-1][4:8], 16) // int(r[-1][28:30], 16)
def run_gsm(self, rand):
if len(rand) != 32:
raise ValueError('Invalid rand')
self.select_file(['3f00', '7f20'])
return self._tp.send_apdu('a088000010' + rand)
def reset_card(self):
return self._tp.reset_card()
def verify_chv(self, chv_no, code):
fc = rpad(b2h(code), 16)
return self._tp.send_apdu('a02000' + ('%02x' % chv_no) + '08' + fc)
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