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Add codecs for EF_SPN and GSM strings via construct

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This will replace the hand-crafted codec for EF_SPN
by a struct definition using the construct library.
Old encoders are updated and kept for API compatibility
but are not used internally anymore.

New data structures:
* Rpad(Adapter): Right-padded bytestring (0xff, adjustable)
* GsmStringAdapter(Adapter): Codec for "SMS default 7-bit
	coded alphabet as defined int TS 23.038" using
	the gsm0338 library.
* GsmString(n): Convenient wrapper of both above

Adjustments:
* utils: update+deprecate old dec_spn(), enc_spn()
* remove refs to deprecated functions

Change-Id: Ia1d3a3835933bac0002b7c52511481dd8094b994
This commit is contained in:
Robert Falkenberg
2021-05-07 15:23:20 +02:00
parent c957ce8adc
commit b07a3e9c87
8 changed files with 97 additions and 27 deletions
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2
pySim-read.py
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@@ -36,7 +36,7 @@ from pySim.commands import SimCardCommands
from pySim.transport import init_reader, argparse_add_reader_args
from pySim.cards import card_detect, Card, UsimCard, IsimCard
from pySim.utils import h2b, swap_nibbles, rpad, dec_imsi, dec_iccid, dec_msisdn
from pySim.utils import format_xplmn_w_act, dec_spn, dec_st, dec_addr_tlv
from pySim.utils import format_xplmn_w_act, dec_st, dec_addr_tlv
from pySim.utils import h2s, format_ePDGSelection
option_parser = argparse.ArgumentParser(prog='pySim-read',