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utils: Add a function to decode SELECT result for EF files. 

Change-Id: Ib2af7fe5205654c5277fec01b6b0b10a68e472b9
This commit is contained in:
Alexander Chemeris 2018-01-27 02:06:30 +09:00
parent cc85a1ee71
commit 1198ad9e15
1 changed files with 19 additions and 0 deletions
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19
pySim/utils.py
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@ -113,3 +113,22 @@ def calculate_luhn(cc):
num = map(int, str(cc))
check_digit = 10 - sum(num[-2::-2] + [sum(divmod(d * 2, 10)) for d in num[::-2]]) % 10
return 0 if check_digit == 10 else check_digit
def dec_select_ef_response(response):
'''
As defined in the TS 151.011 9.2.1 SELECT
'''
length = int(response[4:8], 16)
file_id = response[8:12]
file_type = response[12:14]
increase_cmd = response[14:16]
access_cond = response[16:22]
file_status = response[22:24]
data_len = int(response[24:26], 16)
ef_struct = response[26:28]
if len(response) >= 30:
record_len = int(response[28:30], 16)
else:
record_len = 0
return (length, file_id, file_type, increase_cmd, access_cond, file_status, data_len, ef_struct, record_len)