/* Close up shop. */
void
network_pcap_close(void)
{
pcap_t *pc;
if (pcap != NULL) {
pclog("Closing WinPcap\n");
/* Tell the polling thread to shut down. */
pc = pcap; pcap = NULL;
#if 1
/* Terminate the polling thread. */
if (poll_tid != NULL) {
thread_kill(poll_tid);
poll_tid = NULL;
}
#else
/* Wait for the polling thread to shut down. */
while (poll_tid != NULL)
;
#endif
/* OK, now shut down WinPcap itself. */
f_pcap_close(pc);
/* Unload the DLL if possible. */
if (pcap_handle != NULL) {
dynld_close(pcap_handle);
pcap_handle = NULL;
}
}
poll_rx = NULL;
poll_arg = NULL;
}
/* Capture packets from the network, and print them. */
static int
start_cap(char *dev)
{
char temp[PCAP_ERRBUF_SIZE];
struct pcap_pkthdr *hdr;
const unsigned char *pkt;
struct tm *ltime;
time_t now;
pcap_t *pcap;
int rc;
/* Open the device for reading from it. */
pcap = f_pcap_open_live(dev,
1518, /* MTU */
1, /* promisc mode */
10, /* timeout */
temp);
if (pcap == NULL) {
fprintf(stderr, "Pcap: open_live(%s): %s\n", dev, temp);
return(2);
}
printf("Listening on '%s'..\n", dev);
for (;;) {
rc = f_pcap_next_ex(pcap, &hdr, &pkt);
if (rc < 0) break;
/* Did we time out? */
if (rc == 0) continue;
/* Convert the timestamp to readable format. */
now = hdr->ts.tv_sec;
ltime = localtime(&now);
strftime(temp, sizeof(temp), "%H:%M:%S", ltime);
/* Process and print the packet. */
printf("\n<< %s,%.6ld len=%u\n",
temp, hdr->ts.tv_usec, hdr->len);
rc = eth_prhdr((unsigned char *)pkt);
hex_dump((unsigned char *)pkt+rc, hdr->len-rc);
}
/* All done, close up. */
f_pcap_close(pcap);
return(0);
}
