mirror of
https://gitea.osmocom.org/sim-card/simtrace2.git
synced 2026-11-08 17:55:59 +03:00
Alexander Couzens
63a61bfdaf
osmo_apdu_segment_in() doesn't have the context of the previous APDU,
for nearly all calls this is fine, except for GP GET DATA, which can be
a case 2 or case 4 APDU.
GP GET DATA defines the Le field as 0x00 which is used by osmo_apdu_segment_in
to detect if it is a case 2 or case 4.
However a card can respond with the SW 6cXX, which means the previous
command must be resend with a Le field XX, which got misinterpreted by
the osmo_apdu_segment_in() as a case 4 resulting in a timeout waiting for
more data.
Modem <-> Card
81cadf2000 ->
<- 6c0b
81cadf200b ->
-- Simtrace waits for more data because it wrongly decodes it as APDU case 4
instead of case 2.
Related: SYS#8147
Change-Id: Ie238662e7e6a10dd4283ede0c8d8d73bc375c247
84 lines
2.7 KiB
C
84 lines
2.7 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdint.h>
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#include <osmocom/simtrace2/apdu_dispatch.h>
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const uint8_t get_data_c2_ca[] = { 0x81, 0xCA, 0x00, 0x5A, 0x00 };
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const uint8_t get_data_c2_cb[] = { 0x81, 0xCB, 0x00, 0x5A, 0x00 };
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/* teset data for 6cXX test */
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const uint8_t get_data_c2_ca_le_23[] = { 0x81, 0xCA, 0x00, 0x5A, 0x23 };
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const uint8_t get_data_c2_cb_le_23[] = { 0x81, 0xCb, 0x00, 0x5A, 0x23 };
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#define APDU_SEGMENT_IN(apdu, exp_rc) \
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do { \
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memset(&ac, 0, sizeof(ac)); \
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printf("Testing " #apdu "\n"); \
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int rc = osmo_apdu_segment_in(&ac, apdu, ARRAY_SIZE(apdu), true); \
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if (rc != exp_rc) \
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printf("%d (actual) != %d (expected)\n", rc, exp_rc);\
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OSMO_ASSERT(rc == exp_rc); \
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} while (0)
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#define APDU_SEGMENT_IN2(apdu, exp_rc) \
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do { \
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memset(&ac, 0, sizeof(ac)); \
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memset(&prev_ac, 0, sizeof(prev_ac)); \
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printf("Testing " #apdu "\n"); \
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int rc = osmo_apdu_segment_in2(&ac, &prev_ac, apdu, ARRAY_SIZE(apdu), true); \
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if (rc != exp_rc) \
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printf("%d (actual) != %d (expected)\n", rc, exp_rc);\
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OSMO_ASSERT(rc == exp_rc); \
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} while (0)
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void test_apdu_dispatch_simple(void)
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{
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struct osmo_apdu_context ac, prev_ac;
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APDU_SEGMENT_IN(get_data_c2_ca, APDU_ACT_TX_CAPDU_TO_CARD);
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APDU_SEGMENT_IN(get_data_c2_cb, APDU_ACT_TX_CAPDU_TO_CARD);
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APDU_SEGMENT_IN2(get_data_c2_ca, APDU_ACT_TX_CAPDU_TO_CARD);
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APDU_SEGMENT_IN2(get_data_c2_cb, APDU_ACT_TX_CAPDU_TO_CARD);
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}
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void test_apdu_dispatch_context(void)
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{
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struct osmo_apdu_context ac, prev_ac;
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int rc;
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printf("Testing GET DATA / 0xCA with SW 6Cxx\n");
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memset(&ac, 0, sizeof(ac));
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memset(&prev_ac, 0, sizeof(prev_ac));
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rc = osmo_apdu_segment_in2(&ac, &prev_ac, get_data_c2_ca, ARRAY_SIZE(get_data_c2_ca), 1);
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OSMO_ASSERT(rc == APDU_ACT_TX_CAPDU_TO_CARD);
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OSMO_ASSERT(ac.apdu_case == 2)
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ac.sw[0] = 0x6c;
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ac.sw[1] = 0x23;
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rc = osmo_apdu_segment_in2(&ac, &prev_ac, get_data_c2_ca_le_23, ARRAY_SIZE(get_data_c2_ca_le_23), 1);
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OSMO_ASSERT(rc == APDU_ACT_TX_CAPDU_TO_CARD);
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OSMO_ASSERT(ac.apdu_case == 2)
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printf("Testing GET DATA / 0xCB with SW 6Cxx\n");
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memset(&ac, 0, sizeof(ac));
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memset(&prev_ac, 0, sizeof(prev_ac));
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rc = osmo_apdu_segment_in2(&ac, &prev_ac, get_data_c2_cb, ARRAY_SIZE(get_data_c2_cb), 1);
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OSMO_ASSERT(rc == APDU_ACT_TX_CAPDU_TO_CARD);
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OSMO_ASSERT(ac.apdu_case == 2)
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ac.sw[0] = 0x6c;
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ac.sw[1] = 0x23;
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rc = osmo_apdu_segment_in2(&ac, &prev_ac, get_data_c2_cb_le_23, ARRAY_SIZE(get_data_c2_cb_le_23), 1);
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OSMO_ASSERT(rc == APDU_ACT_TX_CAPDU_TO_CARD);
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OSMO_ASSERT(ac.apdu_case == 2)
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}
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int main(int argc, char **argv)
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{
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test_apdu_dispatch_simple();
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test_apdu_dispatch_context();
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printf("All tests passed.\n");
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return 0;
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}
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