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ts_51_011: Full encoder/decoder for EF.AD 

The EF.AD class only had a partial decoder and no encoder before this
patch.

You can now do things like

pySIM-shell (MF/ADF.USIM/EF.AD)> read_binary_decoded
{
    "ms_operation_mode": "normal_and_specific_facilities",
    "specific_facilities": {
        "ofm": false
    },
    "len_of_mnc_in_imsi": 2
}
pySIM-shell (MF/ADF.USIM/EF.AD)> update_binary_decoded '{"ms_operation_mode": "normal_and_specific_facilities", "specific_facilities": {"ofm": false}, "len_of_mnc_in_imsi": 3}'

not quite all that elegant yet, but working at all.

Change-Id: Id2cb66cb26b6bd08befe9f8468b0b0773da842b1
This commit is contained in:
Harald Welte 2021-04-06 20:19:01 +02:00
parent bcad86c08c
commit c9baa4d915
1 changed files with 18 additions and 6 deletions
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24
pySim/ts_51_011.py
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@ -502,17 +502,29 @@ class EF_ACC(TransparentEF):
# TS 51.011 Section 10.3.18
class EF_AD(TransparentEF):
OP_MODE = {
0x00: 'normal operation',
0x80: 'type approval operations',
0x01: 'normal operation + specific facilities',
0x81: 'type approval + specific facilities',
0x02: 'maintenance (off line)',
0x04: 'cell test operation',
0x00: 'normal',
0x80: 'type_approval',
0x01: 'normal_and_specific_facilities',
0x81: 'type_approval_and_specific_facilities',
0x02: 'maintenance_off_line',
0x04: 'cell_test',
}
OP_MODE_reverse = dict(map(reversed, OP_MODE.items()))
def __init__(self, fid='6fad', sfid=None, name='EF.AD', desc='Administrative Data', size={3,4}):
super().__init__(fid, sfid=sfid, name=name, desc=desc, size=size)
def _decode_bin(self, raw_bin):
u = unpack('!BH', raw_bin[:3])
ofm = True if u[1] & 1 else False
res = {'ms_operation_mode': self.OP_MODE.get(u[0], u[0]), 'specific_facilities': { 'ofm': ofm } }
if len(raw_bin) > 3:
res['len_of_mnc_in_imsi'] = int(raw_bin[3]) & 0xf
return res
def _encode_bin(self, abstract):
op_mode = self.OP_MODE_reverse[abstract['ms_operation_mode']]
res = pack('!BH', op_mode, abstract['specific_facilities']['ofm'])
if 'len_of_mnc_in_imsi' in abstract:
res += pack('!B', abstract['len_of_mnc_in_imsi'])
return res
# TS 51.011 Section 10.3.13
class EF_CBMID(EF_CBMI):