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iso7816.c
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iso7816.c
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/*
* iso7816.c: Functions specified by the ISO 7816 standard
*
* Copyright (C) 2001, 2002 Juha Yrjölä <juha.yrjola@iki.fi>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include <assert.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include "internal.h"
#include "asn1.h"
#include "iso7816.h"
#include "sm/sm-iso.h"
static void fixup_transceive_length(const struct sc_card *card,
struct sc_apdu *apdu)
{
if (card == NULL || apdu == NULL) {
return;
}
if (apdu->lc > sc_get_max_send_size(card)) {
/* The lower layers will automatically do chaining */
apdu->flags |= SC_APDU_FLAGS_CHAINING;
}
if (apdu->le > sc_get_max_recv_size(card)) {
/* The lower layers will automatically do a GET RESPONSE, if possible.
* All other workarounds must be carried out by the upper layers. */
apdu->le = sc_get_max_recv_size(card);
}
}
static const struct sc_card_error iso7816_errors[] = {
{ 0x6200, SC_ERROR_CARD_CMD_FAILED, "Warning: no information given, non-volatile memory is unchanged" },
{ 0x6281, SC_ERROR_CORRUPTED_DATA, "Part of returned data may be corrupted" },
{ 0x6282, SC_ERROR_FILE_END_REACHED, "End of file/record reached before reading Le bytes" },
{ 0x6283, SC_ERROR_CARD_CMD_FAILED, "Selected file invalidated" },
{ 0x6284, SC_ERROR_CARD_CMD_FAILED, "FCI not formatted according to ISO 7816-4" },
{ 0x6285, SC_ERROR_CARD_CMD_FAILED, "Selected file in termination state" },
{ 0x6286, SC_ERROR_CARD_CMD_FAILED, "No input data available from a sensor on the card" },
{ 0x6300, SC_ERROR_CARD_CMD_FAILED, "Warning: no information given, non-volatile memory has changed" },
{ 0x6381, SC_ERROR_CARD_CMD_FAILED, "Warning: file filled up by last write" },
{ 0x6400, SC_ERROR_CARD_CMD_FAILED, "Execution error" },
{ 0x6401, SC_ERROR_CARD_CMD_FAILED, "Immediate response required by the card" },
{ 0x6581, SC_ERROR_MEMORY_FAILURE, "Memory failure" },
{ 0x6700, SC_ERROR_WRONG_LENGTH, "Wrong length" },
{ 0x6800, SC_ERROR_NO_CARD_SUPPORT, "Functions in CLA not supported" },
{ 0x6881, SC_ERROR_NO_CARD_SUPPORT, "Logical channel not supported" },
{ 0x6882, SC_ERROR_NO_CARD_SUPPORT, "Secure messaging not supported" },
{ 0x6883, SC_ERROR_CARD_CMD_FAILED, "Last command of the chain expected" },
{ 0x6884, SC_ERROR_NO_CARD_SUPPORT, "Command chaining not supported" },
{ 0x6900, SC_ERROR_NOT_ALLOWED, "Command not allowed" },
{ 0x6981, SC_ERROR_CARD_CMD_FAILED, "Command incompatible with file structure" },
{ 0x6982, SC_ERROR_SECURITY_STATUS_NOT_SATISFIED,"Security status not satisfied" },
{ 0x6983, SC_ERROR_AUTH_METHOD_BLOCKED, "Authentication method blocked" },
{ 0x6984, SC_ERROR_REF_DATA_NOT_USABLE, "Referenced data not usable" },
{ 0x6985, SC_ERROR_NOT_ALLOWED, "Conditions of use not satisfied" },
{ 0x6986, SC_ERROR_NOT_ALLOWED, "Command not allowed (no current EF)" },
{ 0x6987, SC_ERROR_INCORRECT_PARAMETERS,"Expected SM data objects missing" },
{ 0x6988, SC_ERROR_INCORRECT_PARAMETERS,"Incorrect SM data objects" },
{ 0x6A00, SC_ERROR_INCORRECT_PARAMETERS,"Wrong parameter(s) P1-P2" },
{ 0x6A80, SC_ERROR_INCORRECT_PARAMETERS,"Incorrect parameters in the data field" },
{ 0x6A81, SC_ERROR_NO_CARD_SUPPORT, "Function not supported" },
{ 0x6A82, SC_ERROR_FILE_NOT_FOUND, "File or application not found" },
{ 0x6A83, SC_ERROR_RECORD_NOT_FOUND, "Record not found" },
{ 0x6A84, SC_ERROR_NOT_ENOUGH_MEMORY, "Not enough memory space in the file" },
{ 0x6A85, SC_ERROR_INCORRECT_PARAMETERS,"Lc inconsistent with TLV structure" },
{ 0x6A86, SC_ERROR_INCORRECT_PARAMETERS,"Incorrect parameters P1-P2" },
{ 0x6A87, SC_ERROR_INCORRECT_PARAMETERS,"Lc inconsistent with P1-P2" },
{ 0x6A88, SC_ERROR_DATA_OBJECT_NOT_FOUND,"Referenced data not found" },
{ 0x6A89, SC_ERROR_FILE_ALREADY_EXISTS, "File already exists"},
{ 0x6A8A, SC_ERROR_FILE_ALREADY_EXISTS, "DF name already exists"},
{ 0x6B00, SC_ERROR_INCORRECT_PARAMETERS,"Wrong parameter(s) P1-P2" },
{ 0x6D00, SC_ERROR_INS_NOT_SUPPORTED, "Instruction code not supported or invalid" },
{ 0x6E00, SC_ERROR_CLASS_NOT_SUPPORTED, "Class not supported" },
{ 0x6F00, SC_ERROR_CARD_CMD_FAILED, "No precise diagnosis" },
};
static int
iso7816_check_sw(struct sc_card *card, unsigned int sw1, unsigned int sw2)
{
const int err_count = sizeof(iso7816_errors)/sizeof(iso7816_errors[0]);
int i;
/* Handle special cases here */
if (sw1 == 0x6C) {
sc_log(card->ctx, "Wrong length; correct length is %d", sw2);
return SC_ERROR_WRONG_LENGTH;
}
if (sw1 == 0x90 && sw2 == 0x00)
return SC_SUCCESS;
if (sw1 == 0x63U && (sw2 & ~0x0fU) == 0xc0U) {
sc_log(card->ctx, "PIN not verified (remaining tries: %d)", (sw2 & 0x0f));
return SC_ERROR_PIN_CODE_INCORRECT;
}
for (i = 0; i < err_count; i++) {
if (iso7816_errors[i].SWs == ((sw1 << 8) | sw2)) {
sc_log(card->ctx, "%s", iso7816_errors[i].errorstr);
return iso7816_errors[i].errorno;
}
}
sc_log(card->ctx, "Unknown SWs; SW1=%02X, SW2=%02X", sw1, sw2);
return SC_ERROR_CARD_CMD_FAILED;
}
static int
iso7816_read_binary(struct sc_card *card, unsigned int idx, u8 *buf, size_t count, unsigned long *flags)
{
struct sc_context *ctx = card->ctx;
struct sc_apdu apdu;
int r;
if (idx > 0x7FFF) {
sc_log(ctx, "invalid EF offset: 0x%X > 0x7FFF", idx);
return SC_ERROR_OFFSET_TOO_LARGE;
}
sc_format_apdu(card, &apdu, SC_APDU_CASE_2, 0xB0, (idx >> 8) & 0x7F, idx & 0xFF);
apdu.le = count;
apdu.resplen = count;
apdu.resp = buf;
fixup_transceive_length(card, &apdu);
r = sc_transmit_apdu(card, &apdu);
LOG_TEST_RET(ctx, r, "APDU transmit failed");
r = sc_check_sw(card, apdu.sw1, apdu.sw2);
if (r == SC_ERROR_FILE_END_REACHED)
LOG_FUNC_RETURN(ctx, (int)apdu.resplen);
LOG_TEST_RET(ctx, r, "Check SW error");
LOG_FUNC_RETURN(ctx, (int)apdu.resplen);
}
const struct sc_asn1_entry c_asn1_do_data[] = {
{ "Offset Data Object", SC_ASN1_OCTET_STRING, SC_ASN1_APP|0x14, SC_ASN1_OPTIONAL, NULL, NULL },
{ "Discretionary Data Object", SC_ASN1_OCTET_STRING, SC_ASN1_APP|0x13, SC_ASN1_ALLOC|SC_ASN1_UNSIGNED|SC_ASN1_OPTIONAL, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL }
};
int encode_do_data(struct sc_context *ctx,
unsigned int idx, const unsigned char *data, size_t data_len,
u8 **out, size_t *outlen)
{
unsigned char offset_buffer[2];
size_t offset_buffer_len = sizeof offset_buffer;
struct sc_asn1_entry asn1_do_data[sizeof c_asn1_do_data / sizeof *c_asn1_do_data];
sc_copy_asn1_entry(c_asn1_do_data, asn1_do_data);
if (idx > 0xFFFF)
LOG_TEST_RET(ctx, SC_ERROR_INTERNAL, "Offset beyond 0xFFFF not supported");
offset_buffer[0] = (u8) (idx >> 8);
offset_buffer[1] = (u8) (idx & 0x00FF);
sc_format_asn1_entry(asn1_do_data + 0, offset_buffer, &offset_buffer_len, 1);
if (data && data_len) {
sc_format_asn1_entry(asn1_do_data + 1, (void *) &data, &data_len, 1);
} else {
sc_format_asn1_entry(asn1_do_data + 1, NULL, NULL, 0);
}
LOG_TEST_RET(ctx,
sc_asn1_encode(ctx, asn1_do_data, out, outlen),
"sc_asn1_encode() failed");
return SC_SUCCESS;
}
int decode_do_data(struct sc_context *ctx,
const unsigned char *encoded_data, size_t encoded_data_len,
u8 **out, size_t *outlen)
{
struct sc_asn1_entry asn1_do_data[sizeof c_asn1_do_data / sizeof *c_asn1_do_data];
sc_copy_asn1_entry(c_asn1_do_data, asn1_do_data);
sc_format_asn1_entry(asn1_do_data + 0, NULL, NULL, 0);
sc_format_asn1_entry(asn1_do_data + 1, out, outlen, 0);
LOG_TEST_RET(ctx,
sc_asn1_decode(ctx, asn1_do_data, encoded_data, encoded_data_len, NULL, NULL),
"sc_asn1_decode() failed");
if (!(asn1_do_data[1].flags & SC_ASN1_PRESENT))
return SC_ERROR_INVALID_ASN1_OBJECT;
return SC_SUCCESS;
}
static int
iso7816_read_record(struct sc_card *card, unsigned int rec_nr, unsigned int idx,
u8 *buf, size_t count, unsigned long flags)
{
struct sc_apdu apdu;
int r;
/* XXX maybe use some bigger buffer */
unsigned char resp[SC_MAX_APDU_RESP_SIZE];
unsigned char *encoded_data = NULL, *decoded_data = NULL;
size_t encoded_data_len = 0, decoded_data_len = 0;
if (rec_nr > 0xFF)
LOG_FUNC_RETURN(card->ctx, SC_ERROR_INVALID_ARGUMENTS);
if (idx == 0) {
sc_format_apdu(card, &apdu, SC_APDU_CASE_2, 0xB2, rec_nr, 0);
apdu.le = count;
apdu.resplen = count;
apdu.resp = buf;
} else {
r = encode_do_data(card->ctx, idx, NULL, 0, &encoded_data, &encoded_data_len);
LOG_TEST_GOTO_ERR(card->ctx, r, "Could not encode data objects");
sc_format_apdu(card, &apdu, SC_APDU_CASE_4, 0xB3, rec_nr, 0);
apdu.lc = encoded_data_len;
apdu.datalen = encoded_data_len;
apdu.data = encoded_data;
apdu.le = sizeof resp;
apdu.resplen = sizeof resp;
apdu.resp = resp;
}
apdu.p2 = (flags & SC_RECORD_EF_ID_MASK) << 3;
if (flags & SC_RECORD_BY_REC_NR)
apdu.p2 |= 0x04;
fixup_transceive_length(card, &apdu);
r = sc_transmit_apdu(card, &apdu);
LOG_TEST_GOTO_ERR(card->ctx, r, "APDU transmit failed");
r = sc_check_sw(card, apdu.sw1, apdu.sw2);
LOG_TEST_GOTO_ERR(card->ctx, r, "Card returned error");
if (idx == 0) {
r = (int)apdu.resplen;
} else {
r = decode_do_data(card->ctx, apdu.resp, apdu.resplen,
&decoded_data, &decoded_data_len);
LOG_TEST_GOTO_ERR(card->ctx, r, "Could not decode data objects");
if (decoded_data_len <= count) {
count = decoded_data_len;
}
memcpy(buf, decoded_data, count);
r = (int)count;
}
err:
free(encoded_data);
free(decoded_data);
LOG_FUNC_RETURN(card->ctx, r);
}
static int
iso7816_write_record(struct sc_card *card, unsigned int rec_nr,
const u8 *buf, size_t count, unsigned long flags)
{
struct sc_apdu apdu;
int r;
sc_format_apdu(card, &apdu, SC_APDU_CASE_3, 0xD2, rec_nr, 0);
apdu.lc = count;
apdu.datalen = count;
apdu.data = buf;
apdu.p2 = (flags & SC_RECORD_EF_ID_MASK) << 3;
if (flags & SC_RECORD_BY_REC_NR)
apdu.p2 |= 0x04;
fixup_transceive_length(card, &apdu);
r = sc_transmit_apdu(card, &apdu);
LOG_TEST_RET(card->ctx, r, "APDU transmit failed");
r = sc_check_sw(card, apdu.sw1, apdu.sw2);
LOG_TEST_RET(card->ctx, r, "Card returned error");
LOG_FUNC_RETURN(card->ctx, (int)count);
}
static int
iso7816_append_record(struct sc_card *card,
const u8 *buf, size_t count, unsigned long flags)
{
struct sc_apdu apdu;
int r;
sc_format_apdu(card, &apdu, SC_APDU_CASE_3, 0xE2, 0, 0);
apdu.lc = count;
apdu.datalen = count;
apdu.data = buf;
apdu.p2 = (flags & SC_RECORD_EF_ID_MASK) << 3;
fixup_transceive_length(card, &apdu);
r = sc_transmit_apdu(card, &apdu);
LOG_TEST_RET(card->ctx, r, "APDU transmit failed");
r = sc_check_sw(card, apdu.sw1, apdu.sw2);
LOG_TEST_RET(card->ctx, r, "Card returned error");
LOG_FUNC_RETURN(card->ctx, (int)count);
}
static int
iso7816_update_record(struct sc_card *card, unsigned int rec_nr, unsigned int idx,
const u8 *buf, size_t count, unsigned long flags)
{
struct sc_apdu apdu;
int r;
unsigned char *encoded_data = NULL;
size_t encoded_data_len = 0;
if (rec_nr > 0xFF)
LOG_FUNC_RETURN(card->ctx, SC_ERROR_INVALID_ARGUMENTS);
if (idx == 0) {
sc_format_apdu(card, &apdu, SC_APDU_CASE_3, 0xDC, rec_nr, 0);
apdu.lc = count;
apdu.datalen = count;
apdu.data = buf;
} else {
r = encode_do_data(card->ctx, idx, buf, count, &encoded_data, &encoded_data_len);
LOG_TEST_GOTO_ERR(card->ctx, r, "Could not encode data objects");
sc_format_apdu(card, &apdu, SC_APDU_CASE_3, 0xDD, rec_nr, 0);
apdu.lc = encoded_data_len;
apdu.datalen = encoded_data_len;
apdu.data = encoded_data;
}
apdu.p2 = (flags & SC_RECORD_EF_ID_MASK) << 3;
if (flags & SC_RECORD_BY_REC_NR)
apdu.p2 |= 0x04;
fixup_transceive_length(card, &apdu);
r = sc_transmit_apdu(card, &apdu);
LOG_TEST_GOTO_ERR(card->ctx, r, "APDU transmit failed");
r = sc_check_sw(card, apdu.sw1, apdu.sw2);
LOG_TEST_GOTO_ERR(card->ctx, r, "Card returned error");
r = (int)count;
err:
free(encoded_data);
LOG_FUNC_RETURN(card->ctx, r);
}
static int
iso7816_write_binary(struct sc_card *card,
unsigned int idx, const u8 *buf, size_t count, unsigned long flags)
{
struct sc_apdu apdu;
int r;
if (idx > 0x7fff) {
sc_log(card->ctx, "invalid EF offset: 0x%X > 0x7FFF", idx);
return SC_ERROR_OFFSET_TOO_LARGE;
}
sc_format_apdu(card, &apdu, SC_APDU_CASE_3, 0xD0,
(idx >> 8) & 0x7F, idx & 0xFF);
apdu.lc = count;
apdu.datalen = count;
apdu.data = buf;
fixup_transceive_length(card, &apdu);
r = sc_transmit_apdu(card, &apdu);
LOG_TEST_RET(card->ctx, r, "APDU transmit failed");
r = sc_check_sw(card, apdu.sw1, apdu.sw2);
LOG_TEST_RET(card->ctx, r, "Card returned error");
LOG_FUNC_RETURN(card->ctx, (int)count);
}
static int
iso7816_update_binary(struct sc_card *card,
unsigned int idx, const u8 *buf, size_t count, unsigned long flags)
{
struct sc_apdu apdu;
int r;
if (idx > 0x7fff) {
sc_log(card->ctx, "invalid EF offset: 0x%X > 0x7FFF", idx);
return SC_ERROR_OFFSET_TOO_LARGE;
}
sc_format_apdu(card, &apdu, SC_APDU_CASE_3, 0xD6, (idx >> 8) & 0x7F, idx & 0xFF);
apdu.lc = count;
apdu.datalen = count;
apdu.data = buf;
fixup_transceive_length(card, &apdu);
r = sc_transmit_apdu(card, &apdu);
LOG_TEST_RET(card->ctx, r, "APDU transmit failed");
r = sc_check_sw(card, apdu.sw1, apdu.sw2);
LOG_TEST_RET(card->ctx, r, "Card returned error");
LOG_FUNC_RETURN(card->ctx, (int)count);
}
static int
iso7816_process_fci(struct sc_card *card, struct sc_file *file,
const unsigned char *buf, size_t buflen)
{
struct sc_context *ctx = card->ctx;
const unsigned char *p, *end;
unsigned int cla = 0, tag = 0;
size_t length;
file->status = SC_FILE_STATUS_UNKNOWN;
for (p = buf, length = buflen, end = buf + buflen;
p < end;
p += length, length = end - p) {
if (SC_SUCCESS != sc_asn1_read_tag(&p, length, &cla, &tag, &length)
|| p == NULL) {
break;
}
switch (cla | tag) {
case 0x81:
if (file->size != 0) {
/* don't overwrite existing file size excluding structural information */
break;
}
/* fall through */
case 0x80:
/* determine the file size */
file->size = 0;
if (p && length <= sizeof(size_t)) {
size_t size = 0, i;
for (i = 0; i < length; i++) {
size <<= 8;
size |= p[i];
}
if (size > MAX_FILE_SIZE) {
file->size = MAX_FILE_SIZE;
sc_log(ctx, " file size truncated, encoded length: %"SC_FORMAT_LEN_SIZE_T"u", size);
} else {
file->size = size;
}
}
sc_log(ctx, " bytes in file: %"SC_FORMAT_LEN_SIZE_T"u", file->size);
break;
case 0x82:
if (length > 0) {
unsigned char byte = p[0];
const char *type;
file->shareable = byte & 0x40 ? 1 : 0;
sc_log(ctx, " shareable: %s", (byte & 0x40) ? "yes" : "no");
file->ef_structure = byte & 0x07;
switch ((byte >> 3) & 7) {
case 0:
type = "working EF";
file->type = SC_FILE_TYPE_WORKING_EF;
break;
case 1:
type = "internal EF";
file->type = SC_FILE_TYPE_INTERNAL_EF;
break;
case 7:
type = "DF";
file->type = SC_FILE_TYPE_DF;
break;
default:
file->type = SC_FILE_TYPE_UNKNOWN;
type = "unknown";
break;
}
sc_log(ctx, " type: %s", type);
sc_log(ctx, " EF structure: %d", byte & 0x07);
sc_log(ctx, " tag 0x82: 0x%02x", byte);
/* if possible, get additional information for non-DFs */
if (file->type != SC_FILE_TYPE_DF) {
/* max. record length for fixed- & variable-sized records */
if (length > 2 && byte & 0x06) {
file->record_length = (length > 3)
? bebytes2ushort(p+2)
: p[2];
sc_log(ctx, " record length: %"SC_FORMAT_LEN_SIZE_T"u",
file->record_length);
}
/* number of records */
if (length > 4) {
file->record_count = (length > 5)
? bebytes2ushort(p+4)
: p[4];
sc_log(ctx, " records: %"SC_FORMAT_LEN_SIZE_T"u",
file->record_count);
}
}
if (SC_SUCCESS != sc_file_set_type_attr(file, p, length))
sc_log(ctx, "Warning: Could not set file attributes");
}
break;
case 0x83:
if (length == 2) {
file->id = (p[0] << 8) | p[1];
sc_log(ctx, " file identifier: 0x%02X%02X", p[0], p[1]);
}
break;
case 0x84:
if (length > 0 && length <= 16) {
memcpy(file->name, p, length);
file->namelen = length;
sc_log_hex(ctx, " File name:", file->name, file->namelen);
if (!file->type)
file->type = SC_FILE_TYPE_DF;
}
break;
case 0x85:
case 0xA5:
if (SC_SUCCESS != sc_file_set_prop_attr(file, p, length)) {
sc_log(ctx, "Warning: Could not set proprietary file properties");
}
break;
case 0x86:
if (SC_SUCCESS != sc_file_set_sec_attr(file, p, length)) {
sc_log(ctx, "Warning: Could not set file security properties");
}
break;
case 0x88:
if (length == 1) {
file->sid = *p;
sc_log(ctx, " short file identifier: 0x%02X", *p);
}
break;
case 0x8A:
if (length == 1) {
switch (p[0]) {
case 0:
file->status =SC_FILE_STATUS_NO_INFO;
break;
case 1:
file->status = SC_FILE_STATUS_CREATION;
break;
case 3:
file->status = SC_FILE_STATUS_INITIALISATION;
break;
case 4:
case 6:
file->status = SC_FILE_STATUS_INVALIDATED;
break;
case 5:
case 7:
file->status = SC_FILE_STATUS_ACTIVATED;
break;
case 12:
case 13:
case 14:
case 15:
file->status = SC_FILE_STATUS_TERMINATION;
break;
case 2:
file->status = SC_FILE_STATUS_RFU_2;
break;
case 8:
file->status = SC_FILE_STATUS_RFU_8;
break;
case 9:
file->status = SC_FILE_STATUS_RFU_9;
break;
case 10:
file->status = SC_FILE_STATUS_RFU_10;
break;
case 11:
file->status = SC_FILE_STATUS_RFU_11;
break;
default:
file->status = SC_FILE_STATUS_PROPRIETARY;
}
}
break;
case 0x62:
case 0x64:
case 0x6F:
/* allow nested FCP/FMD/FCI templates */
iso7816_process_fci(card, file, p, length);
}
}
file->magic = SC_FILE_MAGIC;
return SC_SUCCESS;
}
static int
iso7816_select_file(struct sc_card *card, const struct sc_path *in_path, struct sc_file **file_out)
{
struct sc_context *ctx;
struct sc_apdu apdu;
unsigned char buf[SC_MAX_APDU_BUFFER_SIZE];
unsigned char pathbuf[SC_MAX_PATH_SIZE], *path = pathbuf;
int r, pathtype;
size_t pathlen;
int select_mf = 0;
struct sc_file *file = NULL;
const u8 *buffer;
size_t buffer_len;
unsigned int cla, tag;
if (card == NULL || in_path == NULL) {
return SC_ERROR_INVALID_ARGUMENTS;
}
ctx = card->ctx;
memcpy(path, in_path->value, in_path->len);
pathlen = in_path->len;
pathtype = in_path->type;
if (in_path->aid.len) {
if (!pathlen) {
memcpy(path, in_path->aid.value, in_path->aid.len);
pathlen = in_path->aid.len;
pathtype = SC_PATH_TYPE_DF_NAME;
} else {
/* First, select the application */
sc_format_apdu(card, &apdu, SC_APDU_CASE_3_SHORT, 0xA4, 4, 0);
apdu.data = in_path->aid.value;
apdu.datalen = in_path->aid.len;
apdu.lc = in_path->aid.len;
r = sc_transmit_apdu(card, &apdu);
LOG_TEST_RET(ctx, r, "APDU transmit failed");
r = sc_check_sw(card, apdu.sw1, apdu.sw2);
if (r)
LOG_FUNC_RETURN(ctx, r);
if (pathtype == SC_PATH_TYPE_PATH
|| pathtype == SC_PATH_TYPE_DF_NAME)
pathtype = SC_PATH_TYPE_FROM_CURRENT;
}
}
sc_format_apdu(card, &apdu, SC_APDU_CASE_4_SHORT, 0xA4, 0, 0);
switch (pathtype) {
case SC_PATH_TYPE_FILE_ID:
apdu.p1 = 0;
if (pathlen != 2)
return SC_ERROR_INVALID_ARGUMENTS;
break;
case SC_PATH_TYPE_DF_NAME:
apdu.p1 = 4;
break;
case SC_PATH_TYPE_PATH:
apdu.p1 = 8;
if (pathlen >= 2 && memcmp(path, "\x3F\x00", 2) == 0) {
if (pathlen == 2) { /* only 3F00 supplied */
select_mf = 1;
apdu.p1 = 0;
break;
}
path += 2;
pathlen -= 2;
}
break;
case SC_PATH_TYPE_FROM_CURRENT:
apdu.p1 = 9;
break;
case SC_PATH_TYPE_PARENT:
apdu.p1 = 3;
pathlen = 0;
apdu.cse = SC_APDU_CASE_2_SHORT;
break;
default:
LOG_FUNC_RETURN(ctx, SC_ERROR_INVALID_ARGUMENTS);
}
apdu.lc = pathlen;
apdu.data = path;
apdu.datalen = pathlen;
if (file_out != NULL) {
apdu.p2 = 0; /* first record, return FCI */
apdu.resp = buf;
apdu.resplen = sizeof(buf);
apdu.le = sc_get_max_recv_size(card) < 256 ? sc_get_max_recv_size(card) : 256;
}
else {
apdu.p2 = 0x0C; /* first record, return nothing */
apdu.cse = (apdu.lc == 0) ? SC_APDU_CASE_1 : SC_APDU_CASE_3_SHORT;
}
r = sc_transmit_apdu(card, &apdu);
LOG_TEST_RET(ctx, r, "APDU transmit failed");
if (file_out == NULL) {
/* For some cards 'SELECT' can be only with request to return FCI/FCP. */
r = sc_check_sw(card, apdu.sw1, apdu.sw2);
if (apdu.sw1 == 0x6A && apdu.sw2 == 0x86) {
apdu.p2 = 0x00;
if (sc_transmit_apdu(card, &apdu) == SC_SUCCESS)
r = sc_check_sw(card, apdu.sw1, apdu.sw2);
}
if (apdu.sw1 == 0x61)
LOG_FUNC_RETURN(ctx, SC_SUCCESS);
LOG_FUNC_RETURN(ctx, r);
}
r = sc_check_sw(card, apdu.sw1, apdu.sw2);
if (r)
LOG_FUNC_RETURN(ctx, r);
if (file_out && (apdu.resplen == 0)) {
/* For some cards 'SELECT' MF or DF_NAME do not return FCI. */
if (select_mf || pathtype == SC_PATH_TYPE_DF_NAME) {
file = sc_file_new();
if (file == NULL)
LOG_FUNC_RETURN(ctx, SC_ERROR_OUT_OF_MEMORY);
file->path = *in_path;
*file_out = file;
LOG_FUNC_RETURN(ctx, SC_SUCCESS);
}
}
if (apdu.resplen < 2)
LOG_FUNC_RETURN(ctx, SC_ERROR_UNKNOWN_DATA_RECEIVED);
switch (apdu.resp[0]) {
case ISO7816_TAG_FCI:
case ISO7816_TAG_FCP:
file = sc_file_new();
if (file == NULL)
LOG_FUNC_RETURN(ctx, SC_ERROR_OUT_OF_MEMORY);
file->path = *in_path;
if (card->ops->process_fci == NULL) {
sc_file_free(file);
LOG_FUNC_RETURN(ctx, SC_ERROR_NOT_SUPPORTED);
}
buffer = apdu.resp;
r = sc_asn1_read_tag(&buffer, apdu.resplen, &cla, &tag, &buffer_len);
if (r == SC_SUCCESS)
card->ops->process_fci(card, file, buffer, buffer_len);
*file_out = file;
break;
case 0x00: /* proprietary coding */
LOG_FUNC_RETURN(ctx, SC_ERROR_UNKNOWN_DATA_RECEIVED);
default:
LOG_FUNC_RETURN(ctx, SC_ERROR_UNKNOWN_DATA_RECEIVED);
}
return SC_SUCCESS;
}
static int
iso7816_get_challenge(struct sc_card *card, u8 *rnd, size_t len)
{
int r;
struct sc_apdu apdu;
sc_format_apdu(card, &apdu, SC_APDU_CASE_2, 0x84, 0x00, 0x00);
apdu.le = len;
apdu.resp = rnd;
apdu.resplen = len;
r = sc_transmit_apdu(card, &apdu);
LOG_TEST_RET(card->ctx, r, "APDU transmit failed");
r = sc_check_sw(card, apdu.sw1, apdu.sw2);
LOG_TEST_RET(card->ctx, r, "GET CHALLENGE failed");
if (len < apdu.resplen) {
return (int) len;
}
return (int) apdu.resplen;
}
static int
iso7816_construct_fci(struct sc_card *card, const sc_file_t *file,
u8 *out, size_t *outlen)
{
u8 *p = out;
u8 buf[64];
if (*outlen < 2)
return SC_ERROR_BUFFER_TOO_SMALL;
*p++ = 0x6F;
p++;
buf[0] = (file->size >> 8) & 0xFF;
buf[1] = file->size & 0xFF;
sc_asn1_put_tag(0x81, buf, 2, p, *outlen - (p - out), &p);
if (file->type_attr_len) {
assert(sizeof(buf) >= file->type_attr_len);
memcpy(buf, file->type_attr, file->type_attr_len);
sc_asn1_put_tag(0x82, buf, file->type_attr_len,
p, *outlen - (p - out), &p);
} else {
buf[0] = file->shareable ? 0x40 : 0;
switch (file->type) {
case SC_FILE_TYPE_INTERNAL_EF:
buf[0] |= 0x08;
/* fall through */
case SC_FILE_TYPE_WORKING_EF:
buf[0] |= file->ef_structure & 7;
break;
case SC_FILE_TYPE_DF:
buf[0] |= 0x38;
break;
default:
return SC_ERROR_NOT_SUPPORTED;
}
sc_asn1_put_tag(0x82, buf, 1, p, *outlen - (p - out), &p);
}
buf[0] = (file->id >> 8) & 0xFF;
buf[1] = file->id & 0xFF;
sc_asn1_put_tag(0x83, buf, 2, p, *outlen - (p - out), &p);
/* 0x84 = DF name */
if (file->prop_attr_len) {
assert(sizeof(buf) >= file->prop_attr_len);
memcpy(buf, file->prop_attr, file->prop_attr_len);
sc_asn1_put_tag(0x85, buf, file->prop_attr_len,
p, *outlen - (p - out), &p);
}
if (file->sec_attr_len) {
assert(sizeof(buf) >= file->sec_attr_len);
memcpy(buf, file->sec_attr, file->sec_attr_len);
sc_asn1_put_tag(0x86, buf, file->sec_attr_len,
p, *outlen - (p - out), &p);
}
out[1] = p - out - 2;
*outlen = p - out;
return 0;
}
static int
iso7816_create_file(struct sc_card *card, sc_file_t *file)
{
int r;
size_t len;
u8 sbuf[SC_MAX_APDU_BUFFER_SIZE];
struct sc_apdu apdu;
len = SC_MAX_APDU_BUFFER_SIZE;
if (card->ops->construct_fci == NULL)
LOG_FUNC_RETURN(card->ctx, SC_ERROR_NOT_SUPPORTED);
r = card->ops->construct_fci(card, file, sbuf, &len);
LOG_TEST_RET(card->ctx, r, "construct_fci() failed");
sc_format_apdu(card, &apdu, SC_APDU_CASE_3_SHORT, 0xE0, 0x00, 0x00);
apdu.lc = len;
apdu.datalen = len;
apdu.data = sbuf;
r = sc_transmit_apdu(card, &apdu);
LOG_TEST_RET(card->ctx, r, "APDU transmit failed");
r = sc_check_sw(card, apdu.sw1, apdu.sw2);
LOG_TEST_RET(card->ctx, r, "Card returned error");
return r;
}
static int
iso7816_get_response(struct sc_card *card, size_t *count, u8 *buf)
{
struct sc_apdu apdu = {0};
int r;
size_t rlen;
/* request at most max_recv_size bytes */
if (*count > sc_get_max_recv_size(card))
rlen = sc_get_max_recv_size(card);
else
rlen = *count;
sc_format_apdu(card, &apdu, SC_APDU_CASE_2, 0xC0, 0x00, 0x00);
apdu.le = rlen;
apdu.resplen = rlen;
apdu.resp = buf;
/* don't call GET RESPONSE recursively */
apdu.flags |= SC_APDU_FLAGS_NO_GET_RESP;
r = sc_transmit_apdu(card, &apdu);
LOG_TEST_RET(card->ctx, r, "APDU transmit failed");
if (apdu.resplen == 0)
LOG_FUNC_RETURN(card->ctx, sc_check_sw(card, apdu.sw1, apdu.sw2));
*count = apdu.resplen;
if (apdu.sw1 == 0x90 && apdu.sw2 == 0x00)
r = 0; /* no more data to read */
else if (apdu.sw1 == 0x61)
r = apdu.sw2 == 0 ? 256 : apdu.sw2; /* more data to read */
else if (apdu.sw1 == 0x62 && apdu.sw2 == 0x82)
r = 0; /* Le not reached but file/record ended */
else
r = sc_check_sw(card, apdu.sw1, apdu.sw2);
return r;
}
static int
iso7816_delete_file(struct sc_card *card, const sc_path_t *path)
{
int r;
u8 sbuf[2];
struct sc_apdu apdu;
SC_FUNC_CALLED(card->ctx, SC_LOG_DEBUG_VERBOSE);
if (path->type != SC_PATH_TYPE_FILE_ID || (path->len != 0 && path->len != 2)) {
sc_log(card->ctx, "File type has to be SC_PATH_TYPE_FILE_ID");
LOG_FUNC_RETURN(card->ctx, SC_ERROR_INVALID_ARGUMENTS);
}
if (path->len == 2) {
sbuf[0] = path->value[0];
sbuf[1] = path->value[1];
sc_format_apdu(card, &apdu, SC_APDU_CASE_3_SHORT, 0xE4, 0x00, 0x00);
apdu.lc = 2;
apdu.datalen = 2;
apdu.data = sbuf;
}
else {
/* No file ID given: means currently selected file */
sc_format_apdu(card, &apdu, SC_APDU_CASE_1, 0xE4, 0x00, 0x00);
}
r = sc_transmit_apdu(card, &apdu);
LOG_TEST_RET(card->ctx, r, "APDU transmit failed");
r = sc_check_sw(card, apdu.sw1, apdu.sw2);
LOG_TEST_RET(card->ctx, r, "Card returned error");
return r;
}
static int
iso7816_set_security_env(struct sc_card *card,
const struct sc_security_env *env, int se_num)
{
struct sc_apdu apdu;
u8 sbuf[SC_MAX_APDU_BUFFER_SIZE];
u8 *p;
int r, locked = 0;
if (card == NULL || env == NULL) {
return SC_ERROR_INVALID_ARGUMENTS;
}
sc_format_apdu(card, &apdu, SC_APDU_CASE_3_SHORT, 0x22, 0x41, 0);
switch (env->operation) {
case SC_SEC_OPERATION_DECIPHER:
apdu.p2 = 0xB8;
break;
case SC_SEC_OPERATION_SIGN:
apdu.p2 = 0xB6;
break;
default:
return SC_ERROR_INVALID_ARGUMENTS;
}
p = sbuf;
if (env->flags & SC_SEC_ENV_ALG_REF_PRESENT) {