OpenWrt – Blame information for rev 1
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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1 | office | 1 | /* |
| 2 | * Taken from fli4l 3.0 |
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| 3 | * Make sure you compile it against the same libpcap version used in OpenWrt |
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| 4 | */ |
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| 5 | |||
| 6 | #include <stdlib.h> |
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| 7 | #include <sys/types.h> |
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| 8 | #include <sys/time.h> |
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| 9 | #include <string.h> |
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| 10 | |||
| 11 | #include <linux/types.h> |
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| 12 | #include <linux/ppp_defs.h> |
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| 13 | |||
| 14 | #include <pcap.h> |
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| 15 | #include <pcap-bpf.h> |
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| 16 | |||
| 17 | int main (int argc, char ** argv) |
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| 18 | { |
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| 19 | pcap_t *pc; /* Fake struct pcap so we can compile expr */ |
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| 20 | struct bpf_program filter; /* Filter program for link-active pkts */ |
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| 21 | u_int32_t netmask=0; |
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| 22 | |||
| 23 | int dflag = 3; |
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| 24 | if (argc == 4) |
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| 25 | { |
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| 26 | if (!strcmp (argv[1], "-d")) |
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| 27 | { |
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| 28 | dflag = atoi (argv[2]); |
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| 29 | argv += 2; |
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| 30 | argc -=2; |
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| 31 | } |
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| 32 | } |
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| 33 | if (argc != 2) |
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| 34 | { |
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| 35 | printf ("usage; %s [ -d <debug_level> ] expression\n", argv[0]); |
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| 36 | return 1; |
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| 37 | } |
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| 38 | |||
| 39 | pc = pcap_open_dead(DLT_PPP_PPPD, PPP_HDRLEN); |
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| 40 | if (pcap_compile(pc, &filter, argv[1], 1, netmask) == 0) |
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| 41 | { |
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| 42 | printf ("#\n# Expression: %s\n#\n", argv[1]); |
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| 43 | bpf_dump (&filter, dflag); |
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| 44 | return 0; |
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| 45 | } |
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| 46 | else |
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| 47 | { |
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| 48 | printf("error in active-filter expression: %s\n", pcap_geterr(pc)); |
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| 49 | } |
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| 50 | return 1; |
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| 51 | } |