1 /* $NetBSD: bpf_dump.c,v 1.5 2024/09/02 15:33:36 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 1.5 2024/09/02 15:33:36 christos Exp $"); 26 27 #include <config.h> 28 29 #include <pcap.h> 30 #include <stdio.h> 31 32 #include "optimize.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 if (i < NBIDS && bids[i] > 0) 59 printf("[%02d]", bids[i] - 1); 60 else 61 printf(" -- "); 62 #endif 63 puts(bpf_image(insn, i)); 64 } 65 } 66