external/bsd/libpcap/dist/bpf_dump.c

   1 /*      $NetBSD: bpf_dump.c,v 1.2 2014/11/19 19:33:30 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 1.2 2014/11/19 19:33:30 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 void
  35 bpf_dump(const struct bpf_program *p, int option)
  36 {
  37         const struct bpf_insn *insn;
  38         int i;
  39         int n = p->bf_len;
  40
  41         insn = p->bf_insns;
  42         if (option > 2) {
  43                 printf("%d\n", n);
  44                 for (i = 0; i < n; ++insn, ++i) {
  45                         printf("%u %u %u %u\n", insn->code,
  46                                insn->jt, insn->jf, insn->k);
  47                 }
  48                 return ;
  49         }
  50         if (option > 1) {
  51                 for (i = 0; i < n; ++insn, ++i)
  52                         printf("{ 0x%x, %d, %d, 0x%08x },\n",
  53                                insn->code, insn->jt, insn->jf, insn->k);
  54                 return;
  55         }
  56         for (i = 0; i < n; ++insn, ++i) {
  57 #ifdef BDEBUG
  58                 extern int bids[];
  59                 printf(bids[i] > 0 ? "[%02d]" : " -- ", bids[i] - 1);
  60 #endif
  61                 puts(bpf_image(insn, i));
  62         }
  63 }