catarrh/pysim-local
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

perform multiple GET RESPONSE cycles if more data is available

Browse Source 
So far we implemented only one round of "Send the APDU, get SW=61xx,
call GET RESPONSE".  This permitted us to receive only data up to 256
bytes.

Let's extend that to doing multiple rounds, concatenating the result.
This allows us to obtain arbitrary-length data from the card.

See Annex C.1 of ETSI TS 102 221 for examples showing multiple 61xx
iterations.

Change-Id: Ib17da655aa0b0eb203c29dc92690c81bd1300778
Closes: OS#6287
This commit is contained in:
Harald Welte
2023-12-04 21:32:46 +01:00
parent 1c207a2499
commit 4e02436dba
1 changed files with 3 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
pySim/transport/__init__.py
View File

@@ -137,11 +137,12 @@ class LinkBase(abc.ABC):
# xx is the number of response bytes available.
# See also:
if (sw is not None):
if ((sw[0:2] == '9f') or (sw[0:2] == '61')):
while ((sw[0:2] == '9f') or (sw[0:2] == '61')):
# SW1=9F: 3GPP TS 51.011 9.4.1, Responses to commands which are correctly executed
# SW1=61: ISO/IEC 7816-4, Table 5 — General meaning of the interindustry values of SW1-SW2
pdu_gr = pdu[0:2] + 'c00000' + sw[2:4]
data, sw = self.send_apdu_raw(pdu_gr)
d, sw = self.send_apdu_raw(pdu_gr)
data += d
if sw[0:2] == '6c':
# SW1=6C: ETSI TS 102 221 Table 7.1: Procedure byte coding
pdu_gr = pdu[0:8] + sw[2:4]