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ts_31_102: Add support for EF.ECC (emergency call codes)

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decoded output will look like this:
[
    {
        "call_code": "911",
        "service_category": {
            "police": false,
            "ambulance": false,
            "fire_brigade": false,
            "marine_guard": false,
            "mountain_rescue": false,
            "manual_ecall": false,
            "automatic_ecall": false
        },
        "alpha_id": "911"
    },
    {
        "call_code": "112",
        "service_category": {
            "police": false,
            "ambulance": false,
            "fire_brigade": false,
            "marine_guard": false,
            "mountain_rescue": false,
            "manual_ecall": false,
            "automatic_ecall": false
        },
        "alpha_id": "112"
    },
    null,
    null,
    null
]

Change-Id: If8b4972af4f5be1707446d335cfc6e729c973abb
This commit is contained in:
Harald Welte
2022-01-21 15:19:47 +01:00
committed by laforge
parent ffee89a031
commit ff2d86d977
1 changed files with 26 additions and 0 deletions
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26
pySim/ts_31_102.py
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@@ -558,9 +558,35 @@ class EF_UST(TransparentEF):
# TS 31.103 Section 4.2.7 - *not* the same as DF.GSM/EF.ECC!
class EF_ECC(LinFixedEF):
cc_construct = Rpad(BcdAdapter(Rpad(Bytes(3))), pattern='f')
category_construct = FlagsEnum(Byte, police=1, ambulance=2, fire_brigade=3, marine_guard=4,
mountain_rescue=5, manual_ecall=6, automatic_ecall=7)
alpha_construct = GsmStringAdapter(Rpad(GreedyBytes))
def __init__(self, fid='6fb7', sfid=0x01, name='EF.ECC',
desc='Emergency Call Codes'):
super().__init__(fid, sfid=sfid, name=name, desc=desc, rec_len={4,20})
def _decode_record_bin(self, in_bin):
# mandatory parts
code = in_bin[:3]
if code == b'\xff\xff\xff':
return None
svc_category = in_bin[-1:]
ret = {'call_code': parse_construct(EF_ECC.cc_construct, code),
'service_category': parse_construct(EF_ECC.category_construct, svc_category) }
# optional alpha identifier
if len(in_bin) > 4:
alpha_id = in_bin[3:-1]
ret['alpha_id'] = parse_construct(EF_ECC.alpha_construct, alpha_id)
return ret
def _encode_record_bin(self, in_json):
if in_json is None:
return b'\xff\xff\xff\xff'
code = EF_ECC.cc_construct.build(in_json['call_code'])
svc_category = EF_ECC.category_construct.build(in_json['category'])
alpha_id = EF_ECC.alpha_construct.build(in_json['alpha_id'])
# FIXME: alpha_id needs padding up to 'record_length - 4'
return code + alpha_id + svc_category
# TS 31.102 Section 4.2.17
class EF_LOCI(TransparentEF):