89 lines
3.4 KiB
Python
89 lines
3.4 KiB
Python
from queue import Queue
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from pySim.apdu import ApduDecoder, CardReset
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from pySim.apdu.ts_31_102 import ApduCommands as UsimApduCommands
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from pySim.apdu.ts_102_221 import ApduCommands as UiccApduCommands
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from pySim.apdu.ts_102_221 import UiccSelect, UiccStatus
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from pySim.apdu_source import ApduSource
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from pySim.cards import UiccCardBase
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from pySim.commands import SimCardCommands
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from pySim.euicc import CardApplicationECASD, CardApplicationISDR
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from pySim.runtime import RuntimeState
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from pySim.ts_31_102 import CardApplicationUSIM
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from pySim.ts_31_103 import CardApplicationISIM
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from pySim.ts_102_221 import CardProfileUICC
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from util.dummy_sim_link import DummySimLink
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from util.logger import log
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APDU_COMMANDS = UiccApduCommands + UsimApduCommands
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# Taken from the pySim project and modified for the ReSIMulate project
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class Tracer:
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def __init__(self, source: ApduSource):
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# we assume a generic UICC profile; as all APDUs return 9000 in DummySimLink above,
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# all CardProfileAddon (including SIM) will probe successful.
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profile = CardProfileUICC()
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profile.add_application(CardApplicationUSIM())
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profile.add_application(CardApplicationISIM())
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profile.add_application(CardApplicationISDR())
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profile.add_application(CardApplicationECASD())
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scc = SimCardCommands(transport=DummySimLink())
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card = UiccCardBase(scc)
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self.runtime_state = RuntimeState(card, profile)
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self.apdu_decoder = ApduDecoder(APDU_COMMANDS)
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self.suppress_status = True
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self.suppress_select = True
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self.show_raw_apdu = False
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self.source = source
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def main(self, package_queue: Queue):
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"""Main loop of tracer: Iterates over all Apdu received from source."""
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apdu_counter = 0
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while True:
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# obtain the next APDU from the source (blocking read)
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try:
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apdu = self.source.read()
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apdu_counter = apdu_counter + 1
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except StopIteration:
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log.debug("%i APDUs parsed, stop iteration." % apdu_counter)
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package_queue.task_done()
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return
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except Exception as e:
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log.error("Error reading APDU: %s", e)
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continue
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if apdu is None:
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log.debug("Received None APDU")
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continue
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if isinstance(apdu, CardReset):
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log.debug("Resetting runtime state")
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self.runtime_state.reset()
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continue
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# ask ApduDecoder to look-up (INS,CLA) + instantiate an ApduCommand derived
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apdu_command = self.apdu_decoder.input(apdu)
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# process the APDU (may modify the RuntimeState)
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try:
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apdu_command.process(self.runtime_state)
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except ValueError as e:
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log.error("Error processing APDU: %s", e)
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continue
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except AttributeError as e:
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log.error("Error processing APDU: %s", e)
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return
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# Avoid cluttering the log with too much verbosity
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if self.suppress_select and isinstance(apdu_command, UiccSelect):
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log.debug("Suppressing UiccSelect")
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continue
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if self.suppress_status and isinstance(apdu_command, UiccStatus):
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log.debug("Suppressing UiccStatus")
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continue
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package_queue.put((apdu, apdu_command))
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