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iso7816: allow extended length APDUs

This commit is contained in:
Frank Morgner 2014-06-27 08:26:35 +02:00
parent de6d61405b
commit bb92019e53
1 changed files with 16 additions and 45 deletions
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61
src/libopensc/iso7816.c
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@ -114,7 +114,6 @@ iso7816_read_binary(struct sc_card *card, unsigned int idx, u8 *buf, size_t coun
{ {
struct sc_context *ctx = card->ctx; struct sc_context *ctx = card->ctx;
struct sc_apdu apdu; struct sc_apdu apdu;
u8 recvbuf[SC_MAX_APDU_BUFFER_SIZE];
int r; int r;
if (idx > 0x7fff) { if (idx > 0x7fff) {
@ -123,16 +122,15 @@ iso7816_read_binary(struct sc_card *card, unsigned int idx, u8 *buf, size_t coun
} }
assert(count <= (card->max_recv_size > 0 ? card->max_recv_size : 256)); assert(count <= (card->max_recv_size > 0 ? card->max_recv_size : 256));
sc_format_apdu(card, &apdu, SC_APDU_CASE_2_SHORT, 0xB0, (idx >> 8) & 0x7F, idx & 0xFF); sc_format_apdu(card, &apdu, SC_APDU_CASE_2, 0xB0, (idx >> 8) & 0x7F, idx & 0xFF);
apdu.le = count; apdu.le = count;
apdu.resplen = count; apdu.resplen = count;
apdu.resp = recvbuf; apdu.resp = buf;
r = sc_transmit_apdu(card, &apdu); r = sc_transmit_apdu(card, &apdu);
LOG_TEST_RET(ctx, r, "APDU transmit failed"); LOG_TEST_RET(ctx, r, "APDU transmit failed");
if (apdu.resplen == 0) if (apdu.resplen == 0)
LOG_FUNC_RETURN(ctx, sc_check_sw(card, apdu.sw1, apdu.sw2)); LOG_FUNC_RETURN(ctx, sc_check_sw(card, apdu.sw1, apdu.sw2));
memcpy(buf, recvbuf, apdu.resplen);
r = sc_check_sw(card, apdu.sw1, apdu.sw2); r = sc_check_sw(card, apdu.sw1, apdu.sw2);
if (r == SC_ERROR_FILE_END_REACHED) if (r == SC_ERROR_FILE_END_REACHED)
@ -157,23 +155,21 @@ iso7816_read_record(struct sc_card *card,
unsigned int rec_nr, u8 *buf, size_t count, unsigned long flags) unsigned int rec_nr, u8 *buf, size_t count, unsigned long flags)
{ {
struct sc_apdu apdu; struct sc_apdu apdu;
u8 recvbuf[SC_MAX_APDU_BUFFER_SIZE];
int r; int r;
sc_format_apdu(card, &apdu, SC_APDU_CASE_2_SHORT, 0xB2, rec_nr, 0); sc_format_apdu(card, &apdu, SC_APDU_CASE_2, 0xB2, rec_nr, 0);
apdu.p2 = (flags & SC_RECORD_EF_ID_MASK) << 3; apdu.p2 = (flags & SC_RECORD_EF_ID_MASK) << 3;
if (flags & SC_RECORD_BY_REC_NR) if (flags & SC_RECORD_BY_REC_NR)
apdu.p2 |= 0x04; apdu.p2 |= 0x04;
apdu.le = count; apdu.le = count;
apdu.resplen = count; apdu.resplen = count;
apdu.resp = recvbuf; apdu.resp = buf;
r = sc_transmit_apdu(card, &apdu); r = sc_transmit_apdu(card, &apdu);
LOG_TEST_RET(card->ctx, r, "APDU transmit failed"); LOG_TEST_RET(card->ctx, r, "APDU transmit failed");
if (apdu.resplen == 0) if (apdu.resplen == 0)
LOG_FUNC_RETURN(card->ctx, sc_check_sw(card, apdu.sw1, apdu.sw2)); LOG_FUNC_RETURN(card->ctx, sc_check_sw(card, apdu.sw1, apdu.sw2));
memcpy(buf, recvbuf, apdu.resplen);
LOG_FUNC_RETURN(card->ctx, apdu.resplen); LOG_FUNC_RETURN(card->ctx, apdu.resplen);
} }
@ -186,12 +182,7 @@ iso7816_write_record(struct sc_card *card, unsigned int rec_nr,
struct sc_apdu apdu; struct sc_apdu apdu;
int r; int r;
if (count > 256) { sc_format_apdu(card, &apdu, SC_APDU_CASE_3, 0xD2, rec_nr, 0);
sc_log(card->ctx, "Trying to send too many bytes");
return SC_ERROR_INVALID_ARGUMENTS;
}
sc_format_apdu(card, &apdu, SC_APDU_CASE_3_SHORT, 0xD2, rec_nr, 0);
apdu.p2 = (flags & SC_RECORD_EF_ID_MASK) << 3; apdu.p2 = (flags & SC_RECORD_EF_ID_MASK) << 3;
if (flags & SC_RECORD_BY_REC_NR) if (flags & SC_RECORD_BY_REC_NR)
apdu.p2 |= 0x04; apdu.p2 |= 0x04;
@ -216,12 +207,7 @@ iso7816_append_record(struct sc_card *card,
struct sc_apdu apdu; struct sc_apdu apdu;
int r; int r;
if (count > 256) { sc_format_apdu(card, &apdu, SC_APDU_CASE_3, 0xE2, 0, 0);
sc_log(card->ctx, "Trying to send too many bytes");
return SC_ERROR_INVALID_ARGUMENTS;
}
sc_format_apdu(card, &apdu, SC_APDU_CASE_3_SHORT, 0xE2, 0, 0);
apdu.p2 = (flags & SC_RECORD_EF_ID_MASK) << 3; apdu.p2 = (flags & SC_RECORD_EF_ID_MASK) << 3;
apdu.lc = count; apdu.lc = count;
@ -244,11 +230,7 @@ iso7816_update_record(struct sc_card *card, unsigned int rec_nr,
struct sc_apdu apdu; struct sc_apdu apdu;
int r; int r;
if (count > 256) { sc_format_apdu(card, &apdu, SC_APDU_CASE_3, 0xDC, rec_nr, 0);
sc_log(card->ctx, "Trying to send too many bytes");
return SC_ERROR_INVALID_ARGUMENTS;
}
sc_format_apdu(card, &apdu, SC_APDU_CASE_3_SHORT, 0xDC, rec_nr, 0);
apdu.p2 = (flags & SC_RECORD_EF_ID_MASK) << 3; apdu.p2 = (flags & SC_RECORD_EF_ID_MASK) << 3;
if (flags & SC_RECORD_BY_REC_NR) if (flags & SC_RECORD_BY_REC_NR)
apdu.p2 |= 0x04; apdu.p2 |= 0x04;
@ -280,7 +262,7 @@ iso7816_write_binary(struct sc_card *card,
return SC_ERROR_OFFSET_TOO_LARGE; return SC_ERROR_OFFSET_TOO_LARGE;
} }
sc_format_apdu(card, &apdu, SC_APDU_CASE_3_SHORT, 0xD0, sc_format_apdu(card, &apdu, SC_APDU_CASE_3, 0xD0,
(idx >> 8) & 0x7F, idx & 0xFF); (idx >> 8) & 0x7F, idx & 0xFF);
apdu.lc = count; apdu.lc = count;
apdu.datalen = count; apdu.datalen = count;
@ -309,7 +291,7 @@ iso7816_update_binary(struct sc_card *card,
return SC_ERROR_OFFSET_TOO_LARGE; return SC_ERROR_OFFSET_TOO_LARGE;
} }
sc_format_apdu(card, &apdu, SC_APDU_CASE_3_SHORT, 0xD6, (idx >> 8) & 0x7F, idx & 0xFF); sc_format_apdu(card, &apdu, SC_APDU_CASE_3, 0xD6, (idx >> 8) & 0x7F, idx & 0xFF);
apdu.lc = count; apdu.lc = count;
apdu.datalen = count; apdu.datalen = count;
apdu.data = buf; apdu.data = buf;
@ -480,7 +462,7 @@ iso7816_select_file(struct sc_card *card, const struct sc_path *in_path, struct
apdu.p2 = 0; /* first record, return FCI */ apdu.p2 = 0; /* first record, return FCI */
apdu.resp = buf; apdu.resp = buf;
apdu.resplen = sizeof(buf); apdu.resplen = sizeof(buf);
apdu.le = card->max_recv_size > 0 ? card->max_recv_size : 256; apdu.le = card->max_recv_size > 0 && card->max_recv_size < 256 ? card->max_recv_size : 256;
} }
else { else {
apdu.p2 = 0x0C; /* first record, return nothing */ apdu.p2 = 0x0C; /* first record, return nothing */
@ -665,7 +647,7 @@ iso7816_get_response(struct sc_card *card, size_t *count, u8 *buf)
else else
rlen = *count; rlen = *count;
sc_format_apdu(card, &apdu, SC_APDU_CASE_2_SHORT, 0xC0, 0x00, 0x00); sc_format_apdu(card, &apdu, SC_APDU_CASE_2, 0xC0, 0x00, 0x00);
apdu.le = rlen; apdu.le = rlen;
apdu.resplen = rlen; apdu.resplen = rlen;
apdu.resp = buf; apdu.resp = buf;
@ -833,33 +815,22 @@ iso7816_compute_signature(struct sc_card *card,
{ {
int r; int r;
struct sc_apdu apdu; struct sc_apdu apdu;
u8 rbuf[SC_MAX_APDU_BUFFER_SIZE];
u8 sbuf[SC_MAX_APDU_BUFFER_SIZE];
assert(card != NULL && data != NULL && out != NULL); assert(card != NULL && data != NULL && out != NULL);
if (datalen > 255)
LOG_FUNC_RETURN(card->ctx, SC_ERROR_INVALID_ARGUMENTS);
/* INS: 0x2A PERFORM SECURITY OPERATION /* INS: 0x2A PERFORM SECURITY OPERATION
* P1: 0x9E Resp: Digital Signature * P1: 0x9E Resp: Digital Signature
* P2: 0x9A Cmd: Input for Digital Signature */ * P2: 0x9A Cmd: Input for Digital Signature */
sc_format_apdu(card, &apdu, SC_APDU_CASE_4_SHORT, 0x2A, 0x9E, 0x9A); sc_format_apdu(card, &apdu, SC_APDU_CASE_4, 0x2A, 0x9E, 0x9A);
apdu.resp = rbuf; apdu.resp = out;
apdu.resplen = sizeof(rbuf); /* FIXME */ apdu.resplen = outlen;
apdu.le = 256; apdu.le = outlen;
memcpy(sbuf, data, datalen); apdu.data = data;
apdu.data = sbuf;
apdu.lc = datalen; apdu.lc = datalen;
apdu.datalen = datalen; apdu.datalen = datalen;
r = sc_transmit_apdu(card, &apdu); r = sc_transmit_apdu(card, &apdu);
LOG_TEST_RET(card->ctx, r, "APDU transmit failed"); LOG_TEST_RET(card->ctx, r, "APDU transmit failed");
if (apdu.sw1 == 0x90 && apdu.sw2 == 0x00) {
size_t len = apdu.resplen > outlen ? outlen : apdu.resplen;
memcpy(out, apdu.resp, len);
LOG_FUNC_RETURN(card->ctx, len);
}
r = sc_check_sw(card, apdu.sw1, apdu.sw2); r = sc_check_sw(card, apdu.sw1, apdu.sw2);
LOG_TEST_RET(card->ctx, r, "Card returned error"); LOG_TEST_RET(card->ctx, r, "Card returned error");