/*--------------------------------------------------------------------------*/
static void check_monitor(int monsock){
fd_set monavail;
struct timeval tv;
struct sockaddr monfrom;
socklen_t monfromlen;
int size;
char buf[BUFSIZE];
struct ifreq ifr;
// ------ Check if there is new data on the monitor socket
FD_ZERO(&monavail);
FD_SET(monsock, &monavail);
tv.tv_sec = 0;
tv.tv_usec = DWELL;
select(monsock + 1, &monavail, 0, 0, &tv);
if (FD_ISSET(monsock, &monavail)) {
monfromlen = sizeof(monfrom);
size = recvfrom(monsock, buf, sizeof(buf), 0, &monfrom, &monfromlen);
//------ Check if we have received a AX.25-packet
strcpy(ifr.ifr_name, monfrom.sa_data);
ioctl(monsock, SIOCGIFHWADDR, &ifr);
if (ifr.ifr_hwaddr.sa_family == AF_AX25) {
#ifdef NEW_AX25_STACK
ax25_dump(buf, size, 0);
#else
ki_dump(buf, size, 0);
#endif
} // end if AX25
} // end if
}
int main(int argc, char **argv)
{
unsigned char buffer[BUFSIZE];
int dumpstyle = ASCII;
int size;
int s;
char *port = NULL, *dev = NULL;
struct sockaddr sa;
socklen_t asize = sizeof(sa);
struct ifreq ifr;
int proto = ETH_P_AX25;
int exit_code = EXIT_SUCCESS;
timestamp = 0;
while ((s = getopt(argc, argv, "8achip:rtv")) != -1) {
switch (s) {
case '8':
sevenbit = 0;
break;
case 'a':
proto = ETH_P_ALL;
break;
case 'c':
color = 1;
break;
case 'h':
dumpstyle = HEX;
break;
case 'i':
ibmhack = 1;
break;
case 'p':
port = optarg;
break;
case 'r':
dumpstyle = READABLE;
break;
case 't':
timestamp = 1;
break;
case 'v':
printf("listen: %s\n", VERSION);
return 0;
case ':':
fprintf(stderr,
"listen: option -p needs a port name\n");
return 1;
case '?':
fprintf(stderr,
"Usage: listen [-8] [-a] [-c] [-h] [-i] [-p port] [-r] [-t] [-v]\n");
return 1;
}
}
if (ax25_config_load_ports() == 0)
fprintf(stderr, "listen: no AX.25 port data configured\n");
if (port != NULL) {
if ((dev = ax25_config_get_dev(port)) == NULL) {
fprintf(stderr, "listen: invalid port name - %s\n",
port);
return 1;
}
}
if ((sock = socket(PF_PACKET, SOCK_PACKET, htons(proto))) == -1) {
perror("socket");
return 1;
}
if (color) {
color = initcolor(); /* Initialize color support */
if (!color)
printf("Could not initialize color support.\n");
}
setservent(1);
while (!sigint) {
asize = sizeof(sa);
signal(SIGINT, handle_sigint);
signal(SIGTERM, handle_sigint);
if ((size =
recvfrom(sock, buffer, sizeof(buffer), 0, &sa,
&asize)) == -1) {
/*
* Signals are cared for by the handler, and we
* don't want to abort on SIGWINCH
*/
if (errno == EINTR) {
refresh();
continue;
} else if (!(errno == EBADF && sigint)) {
perror("recv");
exit_code = errno;
}
break;
}
signal(SIGINT, SIG_DFL);
signal(SIGTERM, SIG_DFL);
if (sock == -1 || sigint)
break;
if (dev != NULL && strcmp(dev, sa.sa_data) != 0)
continue;
if (proto == ETH_P_ALL) {
strcpy(ifr.ifr_name, sa.sa_data);
signal(SIGINT, handle_sigint);
signal(SIGTERM, handle_sigint);
if (ioctl(sock, SIOCGIFHWADDR, &ifr) == -1) {
if (!(errno == EBADF && sigint)) {
perror("SIOCGIFHWADDR");
exit_code = errno;
break;
}
}
signal(SIGINT, SIG_DFL);
signal(SIGTERM, SIG_DFL);
if (sock == -1 || sigint)
break;
if (ifr.ifr_hwaddr.sa_family == AF_AX25) {
display_port(sa.sa_data);
#ifdef NEW_AX25_STACK
ax25_dump(buffer, size, dumpstyle);
#else
ki_dump(buffer, size, dumpstyle);
#endif
/* lprintf(T_DATA, "\n"); */
}
} else {
display_port(sa.sa_data);
#ifdef NEW_AX25_STACK
ax25_dump(buffer, size, dumpstyle);
#else
ki_dump(buffer, size, dumpstyle);
#endif
/* lprintf(T_DATA, "\n"); */
}
if (color)
refresh();
}
if (color)
endwin();
return exit_code;
}
