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/* librfid - layer 2 protocol handler
* (C) 2005-2006 by Harald Welte <laforge@gnumonks.org>
*/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <string.h> /* for memcpy */
#include <librfid/rfid.h>
#include <librfid/rfid_layer2.h>
static const struct rfid_layer2 *rfid_layer2s[] = {
[RFID_LAYER2_ISO14443A] = &rfid_layer2_iso14443a,
[RFID_LAYER2_ISO14443B] = &rfid_layer2_iso14443b,
[RFID_LAYER2_ISO15693] = &rfid_layer2_iso15693,
};
struct rfid_layer2_handle *
rfid_layer2_init(struct rfid_reader_handle *rh, unsigned int id)
{
struct rfid_layer2 *p;
if (id >= ARRAY_SIZE(rfid_layer2s)) {
DEBUGP("unable to find matching layer2 protocol\n");
return NULL;
}
p = rfid_layer2s[id];
return p->fn.init(rh);
}
int
rfid_layer2_open(struct rfid_layer2_handle *ph)
{
if (!ph->l2->fn.open)
return 0;
return ph->l2->fn.open(ph);
}
int
rfid_layer2_transceive(struct rfid_layer2_handle *ph,
enum rfid_frametype frametype,
const unsigned char *tx_buf, unsigned int len,
unsigned char *rx_buf, unsigned int *rx_len,
u_int64_t timeout, unsigned int flags)
{
if (!ph->l2->fn.transceive)
return -EIO;
return ph->l2->fn.transceive(ph, frametype, tx_buf, len, rx_buf,
rx_len, timeout, flags);
}
int rfid_layer2_fini(struct rfid_layer2_handle *ph)
{
if (!ph->l2->fn.fini)
return 0;
return ph->l2->fn.fini(ph);
}
int
rfid_layer2_close(struct rfid_layer2_handle *ph)
{
if (!ph->l2->fn.close)
return 0;
return ph->l2->fn.close(ph);
}
int
rfid_layer2_getopt(struct rfid_layer2_handle *ph, int optname,
void *optval, unsigned int *optlen)
{
if (optname >> 16 == 0) {
unsigned char *optchar = optval;
switch (optname) {
case RFID_OPT_LAYER2_UID:
if (ph->uid_len < *optlen)
*optlen = ph->uid_len;
memcpy(optchar, ph->uid, *optlen);
break;
default:
return -EINVAL;
break;
}
} else {
if (!ph->l2->fn.getopt)
return -EINVAL;
return ph->l2->fn.getopt(ph, optname, optval, optlen);
}
return 0;
}
int
rfid_layer2_setopt(struct rfid_layer2_handle *ph, int optname,
const void *optval, unsigned int optlen)
{
if (optname >> 16 == 0) {
switch (optname) {
case RFID_OPT_LAYER2_UID:
printf("----> sizeof(ph->uid): %d\n",sizeof(ph->uid));
if ((ph->uid_len < sizeof(ph->uid)) && (optlen<=sizeof(ph->uid))) {
//(ph->uid_len<optlen)
ph->uid_len = optlen;
memcpy(ph->uid, optval, optlen);
} else
return -EINVAL;
break;
default:
return -EINVAL;
break;
}
} else {
if (!ph->l2->fn.setopt)
return -EINVAL;
return ph->l2->fn.setopt(ph, optname, optval, optlen);
}
return 0;
}
char *rfid_layer2_name(struct rfid_layer2_handle *l2h)
{
return l2h->l2->name;
}
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