1/* $NetBSD: bpf_dump.c,v 1.4 2018/09/03 15:26:43 christos Exp $ */
2
3/*
4 * Copyright (c) 1992, 1993, 1994, 1995, 1996
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that: (1) source code distributions
9 * retain the above copyright notice and this paragraph in its entirety, (2)
10 * distributions including binary code include the above copyright notice and
11 * this paragraph in its entirety in the documentation or other materials
12 * provided with the distribution, and (3) all advertising materials mentioning
13 * features or use of this software display the following acknowledgement:
14 * ``This product includes software developed by the University of California,
15 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
16 * the University nor the names of its contributors may be used to endorse
17 * or promote products derived from this software without specific prior
18 * written permission.
19 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
20 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
21 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
22 */
23
24#include <sys/cdefs.h>
25__RCSID("$NetBSD: bpf_dump.c,v 1.4 2018/09/03 15:26:43 christos Exp $");
26
27#ifdef HAVE_CONFIG_H
28#include <config.h>
29#endif
30
31#include <pcap.h>
32#include <stdio.h>
33
34#include "optimize.h"
35
36void
37bpf_dump(const struct bpf_program *p, int option)
38{
39 const struct bpf_insn *insn;
40 int i;
41 int n = p->bf_len;
42
43 insn = p->bf_insns;
44 if (option > 2) {
45 printf("%d\n", n);
46 for (i = 0; i < n; ++insn, ++i) {
47 printf("%u %u %u %u\n", insn->code,
48 insn->jt, insn->jf, insn->k);
49 }
50 return ;
51 }
52 if (option > 1) {
53 for (i = 0; i < n; ++insn, ++i)
54 printf("{ 0x%x, %d, %d, 0x%08x },\n",
55 insn->code, insn->jt, insn->jf, insn->k);
56 return;
57 }
58 for (i = 0; i < n; ++insn, ++i) {
59#ifdef BDEBUG
60 if (i < NBIDS && bids[i] > 0)
61 printf("[%02d]", bids[i] - 1);
62 else
63 printf(" -- ");
64#endif
65 puts(bpf_image(insn, i));
66 }
67}
68