mirror of https://gerrit.osmocom.org/pysim
proactive: Send a Terminal Response automatically after a Fetch
Change-Id: I43bc994e7517b5907fb40a98d84797c54056c47d
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@ -10,7 +10,7 @@ from typing import Optional, Tuple
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from pySim.exceptions import *
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from pySim.construct import filter_dict
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from pySim.utils import sw_match, b2h, h2b, i2h, Hexstr
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from pySim.cat import ProactiveCommand
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from pySim.cat import ProactiveCommand, CommandDetails, DeviceIdentities, Result
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#
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# Copyright (C) 2009-2010 Sylvain Munaut <tnt@246tNt.com>
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@ -42,10 +42,7 @@ class ProactiveHandler(abc.ABC):
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"""Abstract base class representing the interface of some code that handles
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the proactive commands, as returned by the card in responses to the FETCH
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command."""
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def receive_fetch_raw(self, payload: Hexstr):
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# parse the proactive command
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pcmd = ProactiveCommand()
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parsed = pcmd.from_tlv(h2b(payload))
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def receive_fetch_raw(self, pcmd: ProactiveCommand, parsed: Hexstr):
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# try to find a generic handler like handle_SendShortMessage
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handle_name = 'handle_%s' % type(parsed).__name__
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if hasattr(self, handle_name):
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@ -167,11 +164,50 @@ class LinkBase(abc.ABC):
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# need not concern the caller.
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rv = (rv[0], '9000')
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# proactive sim as per TS 102 221 Setion 7.4.2
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# TODO: Check SW manually to avoid recursing on the stack (provided this piece of code stays in this place)
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fetch_rv = self.send_apdu_checksw('80120000' + last_sw[2:], sw)
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# Setting this in case we later decide not to send a terminal
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# response immediately unconditionally -- the card may still have
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# something pending even though the last command was not processed
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# yet.
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last_sw = fetch_rv[1]
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print("FETCH: %s" % fetch_rv[0])
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# parse the proactive command
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pcmd = ProactiveCommand()
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parsed = pcmd.from_tlv(h2b(fetch_rv[0]))
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print("FETCH: %s (%s)" % (fetch_rv[0], type(parsed).__name__))
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result = Result()
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if self.proactive_handler:
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self.proactive_handler.receive_fetch_raw(fetch_rv[0])
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# Extension point: If this does return a list of TLV objects,
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# they could be appended after the Result; if the first is a
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# Result, that cuold replace the one built here.
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self.proactive_handler.receive_fetch_raw(pcmd, parsed)
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result.from_dict({'general_result': 'performed_successfully', 'additional_information': ''})
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else:
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result.from_dict({'general_result': 'command_beyond_terminal_capability', 'additional_information': ''})
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# Send response immediately, thus also flushing out any further
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# proactive commands that the card already wants to send
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#
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# Structure as per TS 102 223 V4.4.0 Section 6.8
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# The Command Details are echoed from the command that has been processed.
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(command_details,) = [c for c in pcmd.decoded.children if isinstance(c, CommandDetails)]
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# The Device Identities are fixed. (TS 102 223 V4.0.0 Section 6.8.2)
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device_identities = DeviceIdentities()
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device_identities.from_dict({'source_dev_id': 'terminal', 'dest_dev_id': 'uicc'})
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# Testing hint: The value of tail does not influence the behavior
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# of an SJA2 that sent ans SMS, so this is implemented only
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# following TS 102 223, and not fully tested.
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tail = command_details.to_tlv() + device_identities.to_tlv() + result.to_tlv()
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# Testing hint: In contrast to the above, this part is positively
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# essential to get the SJA2 to provide the later parts of a
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# multipart SMS in response to an OTA RFM command.
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terminal_response = '80140000' + b2h(len(tail).to_bytes(1, 'big') + tail)
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terminal_response_rv = self.send_apdu(terminal_response)
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last_sw = terminal_response_rv[1]
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if not sw_match(rv[1], sw):
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raise SwMatchError(rv[1], sw.lower(), self.sw_interpreter)
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return rv
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