Sylvain Munaut | e7c15cd | 2010-12-07 10:01:55 +0100 | [diff] [blame] | 1 | # -*- coding: utf-8 -*- |
| 2 | |
| 3 | """ pySim: PCSC reader transport link base |
| 4 | """ |
| 5 | |
Harald Welte | e79cc80 | 2021-01-21 14:10:43 +0100 | [diff] [blame] | 6 | from pySim.exceptions import * |
Harald Welte | 67d551a | 2021-01-21 14:50:01 +0100 | [diff] [blame] | 7 | from pySim.utils import sw_match |
Harald Welte | e79cc80 | 2021-01-21 14:10:43 +0100 | [diff] [blame] | 8 | |
Sylvain Munaut | e7c15cd | 2010-12-07 10:01:55 +0100 | [diff] [blame] | 9 | # |
| 10 | # Copyright (C) 2009-2010 Sylvain Munaut <tnt@246tNt.com> |
| 11 | # |
| 12 | # This program is free software: you can redistribute it and/or modify |
| 13 | # it under the terms of the GNU General Public License as published by |
| 14 | # the Free Software Foundation, either version 2 of the License, or |
| 15 | # (at your option) any later version. |
| 16 | # |
| 17 | # This program is distributed in the hope that it will be useful, |
| 18 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 | # GNU General Public License for more details. |
| 21 | # |
| 22 | # You should have received a copy of the GNU General Public License |
| 23 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 24 | # |
| 25 | |
| 26 | class LinkBase(object): |
Harald Welte | ee3501f | 2021-04-02 13:00:18 +0200 | [diff] [blame^] | 27 | """Base class for link/transport to card.""" |
Sylvain Munaut | e7c15cd | 2010-12-07 10:01:55 +0100 | [diff] [blame] | 28 | |
Harald Welte | ee3501f | 2021-04-02 13:00:18 +0200 | [diff] [blame^] | 29 | def wait_for_card(self, timeout:int=None, newcardonly:bool=False): |
| 30 | """Wait for a card and connect to it |
Sylvain Munaut | bdca252 | 2010-12-09 13:31:58 +0100 | [diff] [blame] | 31 | |
Harald Welte | ee3501f | 2021-04-02 13:00:18 +0200 | [diff] [blame^] | 32 | Args: |
| 33 | timeout : Maximum wait time in seconds (None=no timeout) |
| 34 | newcardonly : Should we wait for a new card, or an already inserted one ? |
Sylvain Munaut | bdca252 | 2010-12-09 13:31:58 +0100 | [diff] [blame] | 35 | """ |
| 36 | pass |
| 37 | |
| 38 | def connect(self): |
Harald Welte | ee3501f | 2021-04-02 13:00:18 +0200 | [diff] [blame^] | 39 | """Connect to a card immediately |
Sylvain Munaut | bdca252 | 2010-12-09 13:31:58 +0100 | [diff] [blame] | 40 | """ |
| 41 | pass |
| 42 | |
| 43 | def disconnect(self): |
Harald Welte | ee3501f | 2021-04-02 13:00:18 +0200 | [diff] [blame^] | 44 | """Disconnect from card |
Sylvain Munaut | bdca252 | 2010-12-09 13:31:58 +0100 | [diff] [blame] | 45 | """ |
| 46 | pass |
| 47 | |
Sylvain Munaut | e7c15cd | 2010-12-07 10:01:55 +0100 | [diff] [blame] | 48 | def reset_card(self): |
Harald Welte | ee3501f | 2021-04-02 13:00:18 +0200 | [diff] [blame^] | 49 | """Resets the card (power down/up) |
Sylvain Munaut | e7c15cd | 2010-12-07 10:01:55 +0100 | [diff] [blame] | 50 | """ |
| 51 | pass |
| 52 | |
Harald Welte | ee3501f | 2021-04-02 13:00:18 +0200 | [diff] [blame^] | 53 | def send_apdu_raw(self, pdu:str): |
| 54 | """Sends an APDU with minimal processing |
Sylvain Munaut | e7c15cd | 2010-12-07 10:01:55 +0100 | [diff] [blame] | 55 | |
Harald Welte | ee3501f | 2021-04-02 13:00:18 +0200 | [diff] [blame^] | 56 | Args: |
| 57 | pdu : string of hexadecimal characters (ex. "A0A40000023F00") |
| 58 | Returns: |
| 59 | tuple(data, sw), where |
| 60 | data : string (in hex) of returned data (ex. "074F4EFFFF") |
| 61 | sw : string (in hex) of status word (ex. "9000") |
Sylvain Munaut | e7c15cd | 2010-12-07 10:01:55 +0100 | [diff] [blame] | 62 | """ |
| 63 | pass |
| 64 | |
| 65 | def send_apdu(self, pdu): |
Harald Welte | ee3501f | 2021-04-02 13:00:18 +0200 | [diff] [blame^] | 66 | """Sends an APDU and auto fetch response data |
Sylvain Munaut | e7c15cd | 2010-12-07 10:01:55 +0100 | [diff] [blame] | 67 | |
Harald Welte | ee3501f | 2021-04-02 13:00:18 +0200 | [diff] [blame^] | 68 | Args: |
| 69 | pdu : string of hexadecimal characters (ex. "A0A40000023F00") |
| 70 | Returns: |
| 71 | tuple(data, sw), where |
| 72 | data : string (in hex) of returned data (ex. "074F4EFFFF") |
| 73 | sw : string (in hex) of status word (ex. "9000") |
Sylvain Munaut | e7c15cd | 2010-12-07 10:01:55 +0100 | [diff] [blame] | 74 | """ |
| 75 | data, sw = self.send_apdu_raw(pdu) |
| 76 | |
Philipp Maier | 859e0fd | 2018-06-12 18:40:24 +0200 | [diff] [blame] | 77 | # When whe have sent the first APDU, the SW may indicate that there are response bytes |
| 78 | # available. There are two SWs commonly used for this 9fxx (sim) and 61xx (usim), where |
| 79 | # xx is the number of response bytes available. |
| 80 | # See also: |
| 81 | # SW1=9F: 3GPP TS 51.011 9.4.1, Responses to commands which are correctly executed |
| 82 | # SW1=61: ISO/IEC 7816-4, Table 5 — General meaning of the interindustry values of SW1-SW2 |
| 83 | if (sw is not None) and ((sw[0:2] == '9f') or (sw[0:2] == '61')): |
Sylvain Munaut | e7c15cd | 2010-12-07 10:01:55 +0100 | [diff] [blame] | 84 | pdu_gr = pdu[0:2] + 'c00000' + sw[2:4] |
| 85 | data, sw = self.send_apdu_raw(pdu_gr) |
| 86 | |
| 87 | return data, sw |
| 88 | |
| 89 | def send_apdu_checksw(self, pdu, sw="9000"): |
Harald Welte | ee3501f | 2021-04-02 13:00:18 +0200 | [diff] [blame^] | 90 | """Sends an APDU and check returned SW |
Sylvain Munaut | e7c15cd | 2010-12-07 10:01:55 +0100 | [diff] [blame] | 91 | |
Harald Welte | ee3501f | 2021-04-02 13:00:18 +0200 | [diff] [blame^] | 92 | Args: |
| 93 | pdu : string of hexadecimal characters (ex. "A0A40000023F00") |
| 94 | sw : string of 4 hexadecimal characters (ex. "9000"). The user may mask out certain |
| 95 | digits using a '?' to add some ambiguity if needed. |
| 96 | Returns: |
| 97 | tuple(data, sw), where |
| 98 | data : string (in hex) of returned data (ex. "074F4EFFFF") |
| 99 | sw : string (in hex) of status word (ex. "9000") |
Sylvain Munaut | e7c15cd | 2010-12-07 10:01:55 +0100 | [diff] [blame] | 100 | """ |
| 101 | rv = self.send_apdu(pdu) |
Philipp Maier | d4ebb6f | 2018-06-12 17:56:07 +0200 | [diff] [blame] | 102 | |
Harald Welte | 67d551a | 2021-01-21 14:50:01 +0100 | [diff] [blame] | 103 | if not sw_match(rv[1], sw): |
Harald Welte | e79cc80 | 2021-01-21 14:10:43 +0100 | [diff] [blame] | 104 | raise SwMatchError(rv[1], sw.lower()) |
Sylvain Munaut | e7c15cd | 2010-12-07 10:01:55 +0100 | [diff] [blame] | 105 | return rv |