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/* librfid - layer 4 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <librfid/rfid_layer2.h>
#include <librfid/rfid_protocol.h>
static const struct rfid_protocol *rfid_protocols[] = {
[RFID_PROTOCOL_MIFARE_CLASSIC] = &rfid_protocol_mfcl,
[RFID_PROTOCOL_MIFARE_UL] = &rfid_protocol_mful,
[RFID_PROTOCOL_TCL] = &rfid_protocol_tcl,
};
struct rfid_protocol_handle *
rfid_protocol_init(struct rfid_layer2_handle *l2h, unsigned int id)
{
struct rfid_protocol *p;
struct rfid_protocol_handle *ph = NULL;
if (id >= ARRAY_SIZE(rfid_protocols))
return NULL;
p = rfid_protocols[id];
ph = p->fn.init(l2h);
if (!ph)
return NULL;
ph->proto = p;
ph->l2h = l2h;
return ph;
}
int
rfid_protocol_open(struct rfid_protocol_handle *ph)
{
if (ph->proto->fn.open)
return ph->proto->fn.open(ph);
return 0;
}
int
rfid_protocol_transceive(struct rfid_protocol_handle *ph,
const unsigned char *tx_buf, unsigned int len,
unsigned char *rx_buf, unsigned int *rx_len,
unsigned int timeout, unsigned int flags)
{
return ph->proto->fn.transceive(ph, tx_buf, len, rx_buf, rx_len,
timeout, flags);
}
int
rfid_protocol_read(struct rfid_protocol_handle *ph,
unsigned int page,
unsigned char *rx_data,
unsigned int *rx_len)
{
if (ph->proto->fn.read)
return ph->proto->fn.read(ph, page, rx_data, rx_len);
else
return -EINVAL;
}
int
rfid_protocol_write(struct rfid_protocol_handle *ph,
unsigned int page,
unsigned char *tx_data,
unsigned int tx_len)
{
if (ph->proto->fn.write)
return ph->proto->fn.write(ph, page, tx_data, tx_len);
else
return -EINVAL;
}
int rfid_protocol_fini(struct rfid_protocol_handle *ph)
{
return ph->proto->fn.fini(ph);
}
int
rfid_protocol_close(struct rfid_protocol_handle *ph)
{
if (ph->proto->fn.close)
return ph->proto->fn.close(ph);
return 0;
}
int
rfid_protocol_getopt(struct rfid_protocol_handle *ph, int optname,
void *optval, unsigned int *optlen)
{
if (optname >> 16 == 0) {
unsigned char *optchar = optval;
switch (optname) {
default:
return -EINVAL;
break;
}
} else {
if (!ph->proto->fn.getopt)
return -EINVAL;
return ph->proto->fn.getopt(ph, optname, optval, optlen);
}
return 0;
}
int
rfid_protocol_setopt(struct rfid_protocol_handle *ph, int optname,
const void *optval, unsigned int optlen)
{
if (optname >> 16 == 0) {
switch (optname) {
default:
return -EINVAL;
break;
}
} else {
if (!ph->proto->fn.setopt)
return -EINVAL;
return ph->proto->fn.setopt(ph, optname, optval, optlen);
}
return 0;
}
char *rfid_protocol_name(struct rfid_protocol_handle *ph)
{
return ph->proto->name;
}
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