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9aeac8f5df
gen_install_parameters() had contradictory logic: the outer guard required all three arguments to be non-None/non-empty (making them mutually inclusive), while the inner checks then treated each one as optional. Make each parameter independently optional (defaulting to None) and remove the all-or-nothing guard from both the function and its caller. Simplify the function body to a straightforward single-pass construction of system_specific_params. Change-Id: I8756fb38016cdf0527fe2e21edb44381d1dc557f
73 lines
2.6 KiB
Python
73 lines
2.6 KiB
Python
# GlobalPlatform install parameter generator
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#
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# (C) 2024 by sysmocom - s.f.m.c. GmbH
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# All Rights Reserved
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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from typing import Optional
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from osmocom.construct import *
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from osmocom.utils import *
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from osmocom.tlv import *
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class AppSpecificParams(BER_TLV_IE, tag=0xC9):
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# GPD_SPE_013, table 11-49
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_construct = GreedyBytes
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class VolatileMemoryQuota(BER_TLV_IE, tag=0xC7):
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# GPD_SPE_013, table 11-49
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_construct = StripHeaderAdapter(GreedyBytes, 4, steps = [2,4])
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class NonVolatileMemoryQuota(BER_TLV_IE, tag=0xC8):
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# GPD_SPE_013, table 11-49
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_construct = StripHeaderAdapter(GreedyBytes, 4, steps = [2,4])
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class StkParameter(BER_TLV_IE, tag=0xCA):
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# GPD_SPE_013, table 11-49
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# ETSI TS 102 226, section 8.2.1.3.2.1
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_construct = GreedyBytes
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class SystemSpecificParams(BER_TLV_IE, tag=0xEF, nested=[VolatileMemoryQuota, NonVolatileMemoryQuota, StkParameter]):
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# GPD_SPE_013 v1.1 Table 6-5
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pass
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class InstallParams(TLV_IE_Collection, nested=[AppSpecificParams, SystemSpecificParams]):
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# GPD_SPE_013, table 11-49
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pass
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def gen_install_parameters(non_volatile_memory_quota: Optional[int] = None,
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volatile_memory_quota: Optional[int] = None,
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stk_parameter: Optional[str] = None):
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# GPD_SPE_013, table 11-49
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#Mandatory
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install_params = InstallParams()
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install_params_dict = [{'app_specific_params': None}]
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system_specific_params = []
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if non_volatile_memory_quota is not None:
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system_specific_params.append({'non_volatile_memory_quota': non_volatile_memory_quota})
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if volatile_memory_quota is not None:
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system_specific_params.append({'volatile_memory_quota': volatile_memory_quota})
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if stk_parameter is not None:
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system_specific_params.append({'stk_parameter': stk_parameter})
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if system_specific_params:
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install_params_dict.append({'system_specific_params': system_specific_params})
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install_params.from_dict(install_params_dict)
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return b2h(install_params.to_bytes())
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