diff options
author | Harald Welte <laforge@osmocom.org> | 2022-01-21 15:19:47 +0100 |
---|---|---|
committer | laforge <laforge@osmocom.org> | 2022-01-22 12:59:02 +0000 |
commit | ff2d86d977d5dd5411075cf7bc22d5426ab56322 (patch) | |
tree | e6f75138b0f8aae0a6f6ce77d9ebaee0ad725fa3 | |
parent | ffee89a031076b4a75b458443763757c29f554df (diff) |
ts_31_102: Add support for EF.ECC (emergency call codes)
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
-rw-r--r-- | pySim/ts_31_102.py | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/pySim/ts_31_102.py b/pySim/ts_31_102.py index 647a4d7..c96bf09 100644 --- a/pySim/ts_31_102.py +++ b/pySim/ts_31_102.py @@ -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): |