mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-25 13:35:21 +02:00
52 lines
1.0 KiB
C
52 lines
1.0 KiB
C
|
/*
|
||
|
|
* Taken from fli4l 3.0
|
||
|
|
* Make sure you compile it against the same libpcap version used in OpenWrt
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <sys/types.h>
|
||
|
|
#include <sys/time.h>
|
||
|
|
#include <string.h>
|
||
|
|
|
||
|
|
#include <linux/types.h>
|
||
|
|
#include <linux/ppp_defs.h>
|
||
|
|
|
||
|
|
#include <pcap.h>
|
||
|
|
#include <pcap-bpf.h>
|
||
|
|
|
||
|
|
int main (int argc, char ** argv)
|
||
|
|
{
|
||
|
|
pcap_t *pc; /* Fake struct pcap so we can compile expr */
|
||
|
|
struct bpf_program filter; /* Filter program for link-active pkts */
|
||
|
|
u_int32_t netmask=0;
|
||
|
|
|
||
|
|
int dflag = 3;
|
||
|
|
if (argc == 4)
|
||
|
|
{
|
||
|
|
if (!strcmp (argv[1], "-d"))
|
||
|
|
{
|
||
|
|
dflag = atoi (argv[2]);
|
||
|
|
argv += 2;
|
||
|
|
argc -=2;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (argc != 2)
|
||
|
|
{
|
||
|
|
printf ("usage; %s [ -d <debug_level> ] expression\n", argv[0]);
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
pc = pcap_open_dead(DLT_PPP_PPPD, PPP_HDRLEN);
|
||
|
|
if (pcap_compile(pc, &filter, argv[1], 1, netmask) == 0)
|
||
|
|
{
|
||
|
|
printf ("#\n# Expression: %s\n#\n", argv[1]);
|
||
|
|
bpf_dump (&filter, dflag);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
printf("error in active-filter expression: %s\n", pcap_geterr(pc));
|
||
|
|
}
|
||
|
|
return 1;
|
||
|
|
}
|