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sysmo-usim-tool
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sysmo_usimsjs1.py: define algos as tuple, print numbers with the names 

Collapse two functions of if-cascades into a data structure matching algo
numbers with string names. Use dicts produced from the initial tuple defining
the relation, to re-implement the functions.

When printing out algos, also print out the numbers set on the USIM.

This prepares for printing a list of available algos by commandline switch.
This commit is contained in:
Neels Hofmeyr 2017-12-14 05:22:49 +01:00
parent 9cf40ef497
commit bb7e45f436
1 changed files with 27 additions and 42 deletions
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69
sysmo_usimsjs1.py
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@ -250,45 +250,28 @@ def sysmo_usim_admin_auth(sim, adm1, force = False):
return rc
def sysmo_usim_algo_to_str(alg):
if alg == 1:
return 'MILENAGE'
elif alg == 3:
return 'COMP128v1'
elif alg == 4:
return 'XOR-2G'
elif alg == 5:
return 'GBA'
elif alg == 6:
return 'COMP128v2'
elif alg == 7:
return 'COMP128v3'
elif alg == 8:
return 'XOR-3G'
elif alg == 9:
return 'CIS-B'
else:
return 'INVALID'
sysmo_usim_algorithms = (
(1, 'MILENAGE'),
(3, 'COMP128v1'),
(4, 'XOR-2G'),
(5, 'GBA'),
(6, 'COMP128v2'),
(7, 'COMP128v3'),
(8, 'XOR-3G'),
(9, 'CIS-B'),
)
def sysmo_usim_str_to_algo(alg):
if alg == 'MILENAGE' or alg == '1':
return 1
elif alg == 'COMP128v1' or alg == '3':
return 3
elif alg == 'XOR-2G' or alg == '4':
return 4
elif alg == 'GBA' or alg == '5':
return 5
elif alg == 'COMP128v2' or alg == '6':
return 6
elif alg == 'COMP128v3' or alg == '7':
return 7
elif alg == 'XOR-3G' or alg == '8':
return 8
elif alg == 'CIS-B' or alg == '9':
return 9
else:
raise ValueError('Unknown Algorithm %s', alg)
sysmo_usim_algorithms_dict_by_nr = dict(sysmo_usim_algorithms)
sysmo_usim_algorithms_dict_by_name = dict([(name.upper(), nr) for nr, name in sysmo_usim_algorithms])
def sysmo_usim_algo_to_str(alg_nr):
return sysmo_usim_algorithms_dict_by_nr.get(alg_nr) or 'INVALID'
def sysmo_usim_str_to_algo(alg_str):
alg_nr = sysmo_usim_algorithms_dict_by_name.get(alg_str.upper())
if alg_nr is None:
raise ValueError('Unknown Algorithm %s' % alg_str)
return alg_nr
# Show current athentication parameters
# (Which algorithim is used for which rat?)
@ -300,9 +283,11 @@ def sysmo_usim_show_auth_params(sim):
sim.select(SYSMO_USIMSJS1_EF_AUTH)
res = sim.read_binary(0x02)
algo_2g, algo_3g = res.apdu[:2]
print " * Current algorithm setting:"
print " 2G: " + sysmo_usim_algo_to_str(res.apdu[0])
print " 3G: " + sysmo_usim_algo_to_str(res.apdu[1])
print " 2G: %d=%s" % (algo_2g, sysmo_usim_algo_to_str(algo_2g))
print " 3G: %d=%s" % (algo_3g, sysmo_usim_algo_to_str(algo_3g))
# Program new authentication parameters
@ -311,8 +296,8 @@ def sysmo_usim_write_auth_params(sim, algo_2g_str, algo_3g_str):
algo_3g = sysmo_usim_str_to_algo(algo_3g_str)
print " * New algorithm setting:"
print " 2G: " + sysmo_usim_algo_to_str(algo_2g)
print " 3G: " + sysmo_usim_algo_to_str(algo_3g)
print " 2G: %d=%s" % (algo_2g, sysmo_usim_algo_to_str(algo_2g))
print " 3G: %d=%s" % (algo_3g, sysmo_usim_algo_to_str(algo_3g))
sysmo_usim_init(sim)