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GP: only send a GET STATUS tag list to cards that support it

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get_status() has appended a hardcoded '5c054f9f70c5cc' to the command data
field. Of the data objects in GP CS v2.3.1 Table 11-35 only the AID
search tag 4F is mandatory, the tag list is optional and not supported
in v2.1.1, where Section 9.4.2.3 defines the data field as the search
qualifier. Cards implementing that revision can reject anything else
with 6A80 as per v2.1.1 Table 9-26.

A sysmocom SJA5 does that. Its data field must be one 4F
TLV, the value is free, but nothing may precede or follow it.
So every subset returned nothing at all...

There is no need to guess: v2.1.1/v2.3.1 Section 7.4.1.3 Card Recognition
Data is "shall be present" and contains the GP version on selected SD.
Query it once, and send the tag list to cards that announce v2.2 or later.
SJA5 reports 2.1.1, sysmoEUICC reports 2.2.

Two more problems with the old list:
- A tag list is an inclusion list, old list omits tag 84, so it
suppressed the Executable Module AIDs
- It asks for tag C5 for Executable Load Files, which "may" be answered
with an error status.

Fix this by constricting or omitting the tag list depending on reported
GP version.

Change-Id: I74cd2bd47617d616bede6453397f544cde5abcb7
This commit is contained in:
Eric Wild
2026-09-23 17:51:04 +02:00
parent 515925228d
commit 26a3fc09dc
2 changed files with 207 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files
tests/unittests/test_globalplatform.py
+97 -6
View File
@@ -712,14 +712,26 @@ class Load_ChunkLen_Test(unittest.TestCase):
for wrapped in scc.wrapped:
self.assertLessEqual(wrapped[4], 255)
# Real Card Data (GET DATA '66'), as returned by sja5 + euicc
CARD_DATA_V211 = ('6631732f06072a864886fc6b01600c060a2a864886fc6b0202010163090607'
'2a864886fc6b03640b06092a864886fc6b040215')
CARD_DATA_V22 = ('663b733906072a864886fc6b01600b06092a864886fc6b020202630906072a86'
'4886fc6b03640b06092a864886fc6b040370640b06092a864886fc6b04810400')
class _FakeScc:
"""mock lchan.scc: replays scripted (data, sw) pairs + records the APDUs sent."""
def __init__(self, responses):
def __init__(self, responses, card_data=CARD_DATA_V211):
self._responses = list(responses)
self._card_data = card_data
self.sent = []
def get_data(self, cla, tag):
if self._card_data is None:
raise SwMatchError('6a88', '9000')
return self._card_data, '9000'
def send_apdu(self, apdu):
self.sent.append(apdu.lower())
if not self._responses:
@@ -727,6 +739,28 @@ class _FakeScc:
return self._responses.pop(0)
class GpVersion_Test(unittest.TestCase):
"""GP version from Card Recognition Data, which v2.1.1/v2.3.1 section 7.4.1.3
require to be present. The OID under tag 60 is {globalPlatform 2 v...}."""
def test_decode_real_cards(self):
self.assertEqual(decode_gp_version(h2b(CARD_DATA_V211)), (2, 1, 1))
self.assertEqual(decode_gp_version(h2b(CARD_DATA_V22)), (2, 2))
def test_unknown_oid_is_none(self):
self.assertIsNone(decode_gp_version(h2b('66097307060512345678')))
def test_tag_lists_follow_the_spec_tables(self):
"""table 11-36 applications, table 11-37 for load files"""
self.assertEqual(b2h(get_status_tag_list('isd')), '5c074f9f70c5cfc4cc')
self.assertEqual(b2h(get_status_tag_list('applications')), '5c074f9f70c5cfc4cc')
self.assertEqual(b2h(get_status_tag_list('files')), '5c054f9f70cecc')
self.assertEqual(b2h(get_status_tag_list('files_and_modules')), '5c064f9f70ce84cc')
# C5 never load files, 84 never applications
self.assertNotIn('c5', b2h(get_status_tag_list('files')))
self.assertNotIn('84', b2h(get_status_tag_list('applications'))[4:])
class GetStatus_Pagination_Test(unittest.TestCase):
"""GPC v2.3.1 section 11.4.3.2 table 11-38 GET STATUS pagination test
@@ -737,8 +771,8 @@ class GetStatus_Pagination_Test(unittest.TestCase):
ENTRY_1 = 'e3074f05a000000151'
ENTRY_2 = 'e3074f05a000000152'
def _sd(self, responses):
scc = _FakeScc(responses)
def _sd(self, responses, card_data=CARD_DATA_V211):
scc = _FakeScc(responses, card_data)
cmd = type('_Cmd', (), {'lchan': type('_Lchan', (), {'scc': scc})()})()
# cmd2 strikes again, CommandSet exposes _cmd as a read only property, needs shadowing
_SD = type('_SD', (ADF_SD.AddlShellCommands,), {'_cmd': cmd})
@@ -750,15 +784,15 @@ class GetStatus_Pagination_Test(unittest.TestCase):
def test_single_page(self):
sd, scc = self._sd([(self.ENTRY_1, '9000')])
grd_list = sd.get_status('applications')
self.assertEqual(scc.sent, ['80f24002094f005c054f9f70c5cc00'])
self.assertEqual(scc.sent, ['80f24002024f0000'])
self.assertEqual(self._aids(grd_list), ['a000000151'])
def test_two_pages(self):
"""6310 -> reissue with P2 bit 1 set -> 9000, both pages in result"""
sd, scc = self._sd([(self.ENTRY_1, '6310'), (self.ENTRY_2, '9000')])
grd_list = sd.get_status('applications')
self.assertEqual(scc.sent, ['80f24002094f005c054f9f70c5cc00',
'80f24003094f005c054f9f70c5cc00'])
self.assertEqual(scc.sent, ['80f24002024f0000',
'80f24003024f0000'])
self.assertEqual(self._aids(grd_list), ['a000000151', 'a000000152'])
def test_three_pages_keep_p2_next_occurrence(self):
@@ -772,6 +806,44 @@ class GetStatus_Pagination_Test(unittest.TestCase):
sd, _scc = self._sd([('', '6a88')])
self.assertEqual(sd.get_status('applications'), [])
def test_v211_card_gets_no_tag_list(self):
"""v2.1.1 section 9.4.2.3 has no tag list,not send a tag list"""
sd, scc = self._sd([(self.ENTRY_1, '9000')], card_data=CARD_DATA_V211)
sd.get_status('applications')
self.assertEqual(scc.sent, ['80f24002024f0000'])
self.assertNotIn('5c', scc.sent[0][8:])
def test_v22_card_gets_a_tag_list(self):
sd, scc = self._sd([(self.ENTRY_1, '9000')], card_data=CARD_DATA_V22)
sd.get_status('applications')
self.assertEqual(scc.sent, ['80f240020b4f005c074f9f70c5cfc4cc00'])
def test_unknown_version_gets_no_tag_list(self):
"""If the card will not say, assume the conservative form that works everywhere."""
sd, scc = self._sd([(self.ENTRY_1, '9000')], card_data=None)
sd.get_status('applications')
self.assertEqual(scc.sent, ['80f24002024f0000'])
def test_v22_card_rejecting_tag_list_falls_back(self):
"""card announcing v2.2+ that still answers 6A80 to the tag list."""
sd, scc = self._sd([('', '6a80'), (self.ENTRY_1, '9000')], card_data=CARD_DATA_V22)
grd_list = sd.get_status('applications')
self.assertEqual(scc.sent, ['80f240020b4f005c074f9f70c5cfc4cc00',
'80f24002024f0000'])
self.assertEqual(self._aids(grd_list), ['a000000151'])
def test_aid_search_qualifier(self):
sd, scc = self._sd([(self.ENTRY_1, '9000')])
sd.get_status('applications', 'a000000087')
self.assertEqual(scc.sent, ['80f24002074f05a00000008700'])
def test_6a80_is_reported_on_a_v211_card(self):
"""no tag list -> 6A80 is error"""
sd, _scc = self._sd([('', '6a80')], card_data=CARD_DATA_V211)
with self.assertRaises(SwMatchError) as ctx:
sd.get_status('applications')
self.assertEqual(ctx.exception.sw_actual, '6a80')
def test_unexpected_sw_is_not_silently_truncated(self):
"""partial is not complete result"""
sd, _scc = self._sd([(self.ENTRY_1, '6310'), ('', '6982')])
@@ -779,7 +851,26 @@ class GetStatus_Pagination_Test(unittest.TestCase):
sd.get_status('applications')
self.assertEqual(ctx.exception.sw_actual, '6982')
def test_v22_card_answering_6a88_to_the_tag_list_falls_back(self):
"""6A88 is the other GET STATUS error condition of table 11-39, section 11.4.2.3
says we may get get an error status. 6A88 to the tag-list attempt should be retried
without it or we get nothing"""
sd, scc = self._sd([('', '6a88'), (self.ENTRY_1, '9000')], card_data=CARD_DATA_V22)
grd_list = sd.get_status('applications')
self.assertEqual(scc.sent, ['80f240020b4f005c074f9f70c5cfc4cc00',
'80f24002024f0000'])
self.assertEqual(self._aids(grd_list), ['a000000151'])
def test_v22_card_with_a_genuinely_empty_subset(self):
"""...and when the retry answers 6A88, the list really is empty."""
sd, scc = self._sd([('', '6a88'), ('', '6a88')], card_data=CARD_DATA_V22)
self.assertEqual(sd.get_status('applications'), [])
self.assertEqual(len(scc.sent), 2)
def test_6a88_after_a_page_keeps_that_page(self):
"""6A88 is "no more matches" after we have data, we're done"""
sd, _scc = self._sd([(self.ENTRY_1, '6310'), ('', '6a88')], card_data=CARD_DATA_V22)
self.assertEqual(self._aids(sd.get_status('applications')), ['a000000151'])
if __name__ == "__main__":
unittest.main()