// Start up duplex LAPD on the given timeslot
static int setup_lapd(GTH_api *api,
const char *span,
const int timeslot,
const char *end)
{
int listen_port = 0;
int listen_socket = gth_make_listen_socket(&listen_port);
int data_socket;
int result;
int sapi = 0;
int tei = 0;
char job_id[MAX_JOB_ID];
if ( (timeslot < 1) || (timeslot > 31) ) {
fprintf(stderr, "valid timeslots are 1--31, not %d. Aborting\n", timeslot);
exit(-1);
}
result = gth_new_lapd_layer(api, 0, span, timeslot, end, sapi, tei,
job_id, api->my_ip, listen_port);
if (result != 0) {
die("starting LAPD failed. (re-run with -v for more information)");
}
data_socket = gth_wait_for_accept(listen_socket);
return data_socket;
}
// Entry point
int
main(int argc, char **argv)
{
GTH_api api;
int data_socket = -1;
int result;
int monitoring = 0;
int verbose = 0;
Channel_t channels[MAX_MTP2_CHANNELS];
int i;
int n_channels = 0;
int n_sus_per_file = 0;
int duration_per_file = 0;
int stop_after_interval = 0;
int output_filename_format = 0;
int drop_fisus = 0;
int esnf = 0;
int listen_port = 0;
int listen_socket = -1;
enum PCap_format format = PCAP_NG;
char *hostname;
char *base_filename;
// Check a couple of assumptions about type size.
assert(sizeof(u32) == 4);
assert(sizeof(u16) == 2);
win32_specific_startup();
process_arguments(argv, argc,
&monitoring, &verbose, &n_sus_per_file, &duration_per_file, &stop_after_interval, &output_filename_format,
&drop_fisus, &esnf, &hostname, channels, &n_channels,
&base_filename, &format);
result = gth_connect(&api, hostname, verbose);
if (result != 0) {
die("Unable to connect to the GTH. Giving up.");
}
read_hw_description(&api, hostname);
enable_l1(&api, channels, n_channels, monitoring);
listen_socket = gth_make_listen_socket(&listen_port);
for (i = 0; i < n_channels; i++){
monitor_mtp2(&api, channels + i,
i, drop_fisus, esnf, listen_port, listen_socket);
if (i == 0) {
data_socket = gth_wait_for_accept(listen_socket);
}
}
fprintf(stderr, "capturing packets, press ^C to abort\n");
convert_to_pcap(&api, data_socket, base_filename,
n_sus_per_file, duration_per_file, stop_after_interval, output_filename_format,
channels, n_channels, format);
return 0; // not reached
}
