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/*
* (C) 2005 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 <stdio.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <usb.h>
#include "pegoda.h"
const char *
rfid_hexdump(const void *data, unsigned int len)
{
static char string[1024];
unsigned char *d = (unsigned char *) data;
unsigned int i, left;
string[0] = '\0';
left = sizeof(string);
for (i = 0; len--; i += 3) {
if (i >= sizeof(string) -4)
break;
snprintf(string+i, 4, " %02x", *d++);
}
return string;
}
struct usb_device *find_device(u_int16_t vendor, u_int16_t device)
{
struct usb_bus *bus;
for (bus = usb_get_busses(); bus; bus = bus->next) {
struct usb_device *dev;
for (dev = bus->devices; dev; dev = dev->next) {
printf("vend 0x%x dev 0x%x\n",
dev->descriptor.idVendor, dev->descriptor.idProduct);
if (dev->descriptor.idVendor == vendor &&
dev->descriptor.idProduct == device) {
return dev;
}
}
}
return NULL;
}
static unsigned char seq = 0x00;
static struct usb_dev_handle *pegoda_handle;
int pegoda_transcieve(u_int8_t cmd, unsigned char *tx, unsigned int tx_len,
unsigned char *rx, unsigned int *rx_len)
{
unsigned char txbuf[256];
unsigned char rxbuf[256];
int rc;
unsigned int len_expected;
struct pegoda_cmd_hdr *hdr = txbuf;
hdr->seq = ++seq;
hdr->cmd = cmd;
hdr->len = htons(tx_len);
memcpy(txbuf + sizeof(*hdr), tx, tx_len);
printf("tx [%u]: %s\n", tx_len+sizeof(*hdr), rfid_hexdump(txbuf, tx_len + sizeof(*hdr)));
rc = usb_bulk_write(pegoda_handle, 0x02, (char *)txbuf,
tx_len + sizeof(*hdr), 0);
if (rc < 0)
return rc;
rc = usb_bulk_read(pegoda_handle, 0x81, (char *)rxbuf, sizeof(rxbuf), 0);
if (rc <= 0)
return rc;
if (rc != 2) {
fprintf(stderr, "unexpected: received %u bytes as length?\n");
return -EIO;
}
printf("len [%u]: %s\n", rc, rfid_hexdump(rxbuf, rc));
len_expected = rxbuf[0];
if (len_expected > sizeof(rxbuf))
return -EIO;
rc = usb_bulk_read(pegoda_handle, 0x81, (char *)rxbuf, len_expected, 0);
if (rc <= 0)
return rc;
printf("rx [%u]: %s\n", rc, rfid_hexdump(rxbuf, rc));
memcpy(rx, rxbuf+1, rc-1);
*rx_len = rc - 1;
return 0;
}
/* Transform crypto1 key from generic 6byte into rc632 specific 12byte */
static int
rc632_mifare_transform_key(const u_int8_t *key6, u_int8_t *key12)
{
int i;
u_int8_t ln;
u_int8_t hn;
for (i = 0; i < 6; i++) {
ln = key6[i] & 0x0f;
hn = key6[i] >> 4;
key12[i * 2 + 1] = (~ln << 4) | ln;
key12[i * 2] = (~hn << 4) | hn;
}
return 0;
}
int main(int argc, char **argv)
{
struct usb_device *pegoda;
unsigned char buf[256];
unsigned char rbuf[256];
unsigned int rlen = sizeof(rbuf);
unsigned char snr[4];
usb_init();
usb_find_busses();
usb_find_devices();
pegoda = find_device(USB_VENDOR_PHILIPS, USB_DEVICE_PEGODA);
if (!pegoda)
exit(2);
printf("found pegoda, %u configurations\n",
pegoda->descriptor.bNumConfigurations);
printf("config 2 [nr %u] has %u interfaces\n",
pegoda->config[1].bConfigurationValue,
pegoda->config[1].bNumInterfaces);
printf("config 2 interface 0 has %u altsettings\n",
pegoda->config[1].interface[0].num_altsetting);
pegoda_handle = usb_open(pegoda);
if (!pegoda_handle)
exit(1);
if (usb_set_configuration(pegoda_handle, 2))
exit(1);
printf("configuration 2 successfully set\n");
if (usb_claim_interface(pegoda_handle, 0))
exit(1);
printf("interface 0 claimed\n");
if (usb_set_altinterface(pegoda_handle, 1))
exit(1);
printf("alt setting 1 selected\n");
pegoda_transcieve(PEGODA_CMD_PCD_CONFIG, NULL, 0, rbuf, &rlen);
buf[0] = 0x26;
rlen = sizeof(rbuf);
pegoda_transcieve(PEGODA_CMD_PICC_COMMON_REQUEST, buf, 1, rbuf, &rlen);
buf[0] = 0x93;
memset(buf+1, 0, 5);
rlen = sizeof(rbuf);
pegoda_transcieve(PEGODA_CMD_PICC_CASC_ANTICOLL, buf, 6, rbuf, &rlen);
memcpy(snr, rbuf+3, 4);
buf[0] = 0x93;
memcpy(buf+1, snr, 4);
rlen = sizeof(rbuf);
pegoda_transcieve(PEGODA_CMD_PICC_CASC_SELECT, buf, 5, rbuf, &rlen);
buf[0] = 0x60;
#if 0
buf[1] = 0x00; /* key number */
buf[2] = 0x00; /* sector */
rlen = sizeof(rbuf);
pegoda_transcieve(PEGODA_CMD_PICC_AUTH, buf, 3, rbuf, &rlen);
#else
memcpy(buf+1, snr, 4);
{
u_int8_t key6[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
//u_int8_t key6[6] = { 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6 };
u_int8_t key12[12];
rc632_mifare_transform_key(key6, key12);
memcpy(buf+5, key12, 12);
buf[17] = 0x00; /* sector */
}
pegoda_transcieve(PEGODA_CMD_PICC_AUTH_KEY, buf, 18, rbuf, &rlen);
#endif
buf[0] = 0x00; /* sector */
pegoda_transcieve(PEGODA_CMD_PICC_READ, buf, 1, rbuf, &rlen);
exit(0);
}
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