xref: /freebsd/contrib/libpcap/bpf_dump.c (revision 848ee2a3a8b47c9905fc51fefcf60eb371edbb98)
1 /*
2  * Copyright (c) 1992, 1993, 1994, 1995, 1996
3  *	The Regents of the University of California.  All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that: (1) source code distributions
7  * retain the above copyright notice and this paragraph in its entirety, (2)
8  * distributions including binary code include the above copyright notice and
9  * this paragraph in its entirety in the documentation or other materials
10  * provided with the distribution, and (3) all advertising materials mentioning
11  * features or use of this software display the following acknowledgement:
12  * ``This product includes software developed by the University of California,
13  * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
14  * the University nor the names of its contributors may be used to endorse
15  * or promote products derived from this software without specific prior
16  * written permission.
17  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
18  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
19  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
20  */
21 
22 #ifdef HAVE_CONFIG_H
23 #include <config.h>
24 #endif
25 
26 #include <pcap.h>
27 #include <stdio.h>
28 
29 #include "optimize.h"
30 
31 void
32 bpf_dump(const struct bpf_program *p, int option)
33 {
34 	const struct bpf_insn *insn;
35 	int i;
36 	int n = p->bf_len;
37 
38 	insn = p->bf_insns;
39 	if (option > 2) {
40 		printf("%d\n", n);
41 		for (i = 0; i < n; ++insn, ++i) {
42 			printf("%u %u %u %u\n", insn->code,
43 			       insn->jt, insn->jf, insn->k);
44 		}
45 		return ;
46 	}
47 	if (option > 1) {
48 		for (i = 0; i < n; ++insn, ++i)
49 			printf("{ 0x%x, %d, %d, 0x%08x },\n",
50 			       insn->code, insn->jt, insn->jf, insn->k);
51 		return;
52 	}
53 	for (i = 0; i < n; ++insn, ++i) {
54 #ifdef BDEBUG
55 		if (i < NBIDS && bids[i] > 0)
56 			printf("[%02d]", bids[i] - 1);
57 		else
58 			printf(" -- ");
59 #endif
60 		puts(bpf_image(insn, i));
61 	}
62 }
63