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/*
* btscanner - Displays the output of Bluetooth scans
* Copyright (C) 2003 Pentest Limited
*
* Written 2003 by Tim Hurman <timh at pentest.co.uk>
*
* 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;
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY
* RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE
* FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY
* DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
* COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS SOFTWARE
* IS DISCLAIMED.
*/
/*
* btscanner.c: keep a bluetooth card scanning the network to find devices
* that are discoverable. Heavily based on hcitool.c
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#include <stdlib.h>
#include <pthread.h>
#include <unistd.h>
#include <stdio.h>
#include <signal.h>
#include <errno.h>
#include <getopt.h>
#include <ncurses.h>
#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#ifdef HAVE_SYSLOG_H
#include <syslog.h>
#endif
#include <bluetooth/bluetooth.h>
#include <bluetooth/hci.h>
#include <bluetooth/hci_lib.h>
#include <bluetooth/sdp.h>
#include <bluetooth/sdp_lib.h>
#include <main.h>
#include <cfg.h>
#include <log.h>
#include <scan.h>
#include <threader.h>
extern char bts_run_scan;
extern hcicfg_t *hcihead;
/* what to start */
struct
{
enum threader_scan_types what;
const char *desc;
void *(*func)(void *);
} thread_starter[] = {
{SCAN_INQ, "inquiry scan", scan_run},
{SCAN_BF, "brute force scan", bf_run},
{SCAN_NONE, NULL, NULL},
};
static enum threader_scan_types threader_current = 0;
/* start some threads; return the number started */
int threader_start(enum threader_scan_types what)
{
hcicfg_t *h;
int i, j, st;
bts_run_scan=1;
/* for each enabled hci device, start a scanning thread */
for (st = 0, h = hcihead; h; h = h->next) {
if (h->enabled) {
/* reset the device */
/*if (scan_reset_device(ctl, h->id))
continue;*/
/* start a thread */
for (i=0; thread_starter[i].what != SCAN_NONE &&
thread_starter[i].what != what; i++);
if (SCAN_NONE == thread_starter[i].what) {
/* eep, dont know what to start */
continue;
}
/* really start */
h->died = 0;
j = pthread_create(&(h->tid), NULL, thread_starter[i].func, h);
if (0 != j) {
applog(LOG_WARNING,
"%s::pthread_create(): %s", __FUNCTION__, strerror(errno));
h->tid = 0;
return -1;
} else {
st++;
applog(LOG_INFO,
"%s::pthread_create(): created thread %d",
__FUNCTION__, h->tid);
}
}
}
if (st > 0)
threader_current = what;
return st;
}
/* kill or reap the threads */
int threader_reap(void)
{
hcicfg_t *h;
int i;
for (i=0, h = hcihead; h; h = h->next) {
/* we need to kill a thread even if it the hci dev is disabled.
* Hackery: the tid will never be 0 as pthreads creates some
* monitor threads. Therefore we can say that tid=0 means no
* thread is active. may need to revise this, esp on Solaris if
* Bluetooth ever gets there */
if (!h->tid)
continue;
if(0 == h->died) {
i++;
} else {
if(pthread_join(h->tid, NULL)) {
applog(LOG_WARNING, "%s::pthread_join(): %s",
__FUNCTION__, strerror(errno));
} else {
applog(LOG_INFO, "%s::pthread_join(): joined thread %d",
__FUNCTION__, h->tid);
}
h->tid = 0;
}
}
return i;
}
/* collect the threads */
int threader_stop(void)
{
if (SCAN_NONE == threader_current) return 0;
bts_run_scan=0;
while (threader_reap())
sleep(2);
/* usleep(500000);*/
threader_current = SCAN_NONE;
return 0;
}
/* is there a scan running */
int threader_running(void)
{
return threader_current;
}
const char *threader_running_desc(enum threader_scan_types what)
{
int i;
for (i=0; SCAN_NONE != thread_starter[i].what; i++)
if (what == thread_starter[i].what) break;
return thread_starter[i].desc;
}
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