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/* $OpenBSD: pcap.c,v 1.5 2003/07/31 21:48:05 deraadt Exp $ */
/*
* Placed in the PUBLIC DOMAIN
*/
#include <pcap.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include "test.h"
#define LOOPBACK_IF "lo0"
#define SNAPLEN 96
#define NO_PROMISC 0
#define PKTCNT 3
volatile int packet_count = 0;
pthread_mutex_t dummy;
pthread_cond_t syncer;
static void
packet_ignore(u_char *tag, const struct pcap_pkthdr *hdr, const u_char *data)
{
packet_count += 1;
}
static void *
pcap_thread(void *arg)
{
char errbuf[PCAP_ERRBUF_SIZE];
pcap_t *handle;
SET_NAME("pcap_thread");
CHECKr(pthread_mutex_lock(&dummy));
handle = pcap_open_live(LOOPBACK_IF, SNAPLEN, NO_PROMISC, 0, errbuf);
if (!handle)
PANIC("You may need to run this test as UID 0 (root)");
CHECKr(pthread_mutex_unlock(&dummy));
CHECKr(pthread_cond_signal(&syncer));
ASSERT(pcap_loop(handle, PKTCNT, packet_ignore, 0) != -1);
return 0;
}
static void *
ping_thread(void *arg)
{
SET_NAME("ping_thread");
CHECKr(pthread_mutex_lock(&dummy));
ASSERT(system("ping -c 3 127.0.0.1") == 0);
CHECKr(pthread_mutex_unlock(&dummy));
CHECKr(pthread_cond_signal(&syncer));
return 0;
}
int
main(int argc, char **argv)
{
pthread_t pcap;
pthread_t ping;
CHECKr(pthread_mutex_init(&dummy, NULL));
CHECKr(pthread_cond_init(&syncer, NULL));
CHECKr(pthread_mutex_lock(&dummy));
CHECKr(pthread_create(&pcap, NULL, pcap_thread, NULL));
CHECKr(pthread_cond_wait(&syncer, &dummy));
CHECKr(pthread_create(&ping, NULL, ping_thread, NULL));
CHECKr(pthread_cond_wait(&syncer, &dummy));
CHECKr(pthread_mutex_unlock(&dummy));
ASSERT(packet_count == 3);
SUCCEED;
}
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