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/*
* Copyright 2010, 2011 Michael Ossmann
*
* This file is part of Project Ubertooth.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* 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; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#include <bluetooth/bluetooth.h>
#include <bluetooth/hci.h>
#include <bluetooth/hci_lib.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include <stdlib.h>
#include <err.h>
#include "ubertooth.h"
#include <btbb.h>
#include <getopt.h>
static void usage()
{
printf("ubertooth-follow - active(bluez) CLK discovery and follow for a particular UAP/LAP\n");
printf("Usage:\n");
printf("\t-h this help\n");
printf("\t-l<LAP> (in hexadecimal)\n");
printf("\t-u<UAP> (in hexadecimal)\n");
printf("\t-U<0-7> set ubertooth device to use\n");
printf("\t-r<filename> capture packets to PCAPNG file\n");
#ifdef ENABLE_PCAP
printf("\t-q<filename> capture packets to PCAP file\n");
#endif
printf("\t-e max_ac_errors\n");
printf("\t-d filename\n");
printf("\t-a Enable AFH\n");
printf("\t-b Bluetooth device (hci0)\n");
printf("\t-w USB delay in 625us timeslots (default:5)\n");
printf("\nLAP and UAP are both required, if not given they are read from the local device, in some cases this may give the incorrect address.\n");
// printf("If an input file is not specified, an Ubertooth device is used for live capture.\n");
}
int main(int argc, char *argv[])
{
int opt, sock, dev_id, lap = 0, uap = 0, delay = 5;
int have_lap = 0;
int have_uap = 0;
int afh_enabled = 0;
uint8_t mode, afh_map[10];
char *end, ubertooth_device = -1;
char *bt_dev = "hci0";
char addr[19] = { 0 };
uint32_t clock;
uint16_t accuracy, handle, offset;
bdaddr_t bdaddr;
btbb_piconet *pn;
struct hci_dev_info di;
int cc = 0;
pn = btbb_piconet_new();
ubertooth_t* ut = ubertooth_init();
while ((opt=getopt(argc,argv,"hl:u:U:e:d:ab:w:r:q:")) != EOF) {
switch(opt) {
case 'l':
lap = strtol(optarg, &end, 16);
if (end != optarg) {
++have_lap;
}
break;
case 'u':
uap = strtol(optarg, &end, 16);
if (end != optarg) {
++have_uap;
}
break;
case 'U':
ubertooth_device = atoi(optarg);
break;
case 'r':
if (!ut->h_pcapng_bredr) {
if (btbb_pcapng_create_file( optarg, "Ubertooth", &ut->h_pcapng_bredr )) {
err(1, "create_bredr_capture_file: ");
}
}
else {
printf("Ignoring extra capture file: %s\n", optarg);
}
break;
#ifdef ENABLE_PCAP
case 'q':
if (!ut->h_pcap_bredr) {
if (btbb_pcap_create_file(optarg, &ut->h_pcap_bredr)) {
err(1, "btbb_pcap_create_file: ");
}
}
else {
printf("Ignoring extra capture file: %s\n", optarg);
}
break;
#endif
case 'e':
max_ac_errors = atoi(optarg);
break;
case 'd':
dumpfile = fopen(optarg, "w");
if (dumpfile == NULL) {
perror(optarg);
return 1;
}
break;
case 'a':
afh_enabled = 1;
break;
case 'b':
bt_dev = optarg;
if (bt_dev == NULL) {
perror(optarg);
return 1;
}
break;
case 'w': //wait
delay = atoi(optarg);
break;
case 'h':
default:
usage();
return 1;
}
}
dev_id = hci_devid(bt_dev);
sock = hci_open_dev(dev_id);
hci_read_clock(sock, 0, 0, &clock, &accuracy, 0);
if ((have_lap != 1) || (have_uap != 1)) {
printf("No address given, reading address from device\n");
hci_read_bd_addr(sock, &bdaddr, 0);
lap = bdaddr.b[0] | bdaddr.b[1] << 8 | bdaddr.b[2] << 16;
btbb_init_piconet(pn, lap);
uap = bdaddr.b[3];
btbb_piconet_set_uap(pn, uap);
printf("LAP=%06x UAP=%02x\n", lap, uap);
} else if (have_lap && have_uap) {
btbb_init_piconet(pn, lap);
btbb_piconet_set_uap(pn, uap);
printf("Address given, assuming address is remote\n");
sprintf(addr, "00:00:%02X:%02X:%02X:%02X",
uap,
(lap >> 16) & 0xFF,
(lap >> 8) & 0xFF,
lap & 0xFF
);
str2ba(addr, &bdaddr);
printf("Address: %s\n", addr);
if (hci_devinfo(dev_id, &di) < 0) {
perror("Can't get device info");
return 1;
}
if (hci_create_connection(sock, &bdaddr,
htobs(di.pkt_type & ACL_PTYPE_MASK),
0, 0x01, &handle, 25000) < 0) {
perror("Can't create connection");
return 1;
}
sleep(1);
cc = 1;
if (hci_read_clock_offset(sock, handle, &offset, 1000) < 0) {
perror("Reading clock offset failed");
}
clock += offset;
} else {
usage();
return 1;
}
if (ut->h_pcapng_bredr) {
btbb_pcapng_record_bdaddr(ut->h_pcapng_bredr,
(((uint32_t)uap)<<24)|lap,
0xff, 0);
}
//Experimental AFH map reading from remote device
if(afh_enabled) {
if(hci_read_afh_map(sock, handle, &mode, afh_map, 1000) < 0) {
perror("HCI read AFH map request failed");
//exit(1);
}
if(mode == 0x01) {
btbb_piconet_set_afh_map(pn, afh_map);
btbb_print_afh_map(pn);
} else {
printf("AFH disabled.\n");
afh_enabled = 0;
}
} else {
printf("Not use AFH\n");
}
if (cc) {
usleep(10000);
hci_disconnect(sock, handle, HCI_OE_USER_ENDED_CONNECTION, 10000);
}
/* Clean up on exit. */
register_cleanup_handler(ut);
ubertooth_connect(ut, ubertooth_device);
if (ut == NULL) {
usage();
return 1;
}
r = ubertooth_check_api(ut);
if (r < 0)
return 1;
cmd_set_bdaddr(ut->devh, btbb_piconet_get_bdaddr(pn));
if(afh_enabled)
cmd_set_afh_map(ut->devh, afh_map);
btbb_piconet_set_clk_offset(pn, clock+delay);
btbb_piconet_set_flag(pn, BTBB_FOLLOWING, 1);
btbb_piconet_set_flag(pn, BTBB_CLK27_VALID, 1);
rx_live(ut, pn, 0);
ubertooth_stop(ut);
return 0;
}
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