117683Spst/* 217683Spst * Copyright (c) 1990, 1991, 1992, 1994, 1995, 1996 317683Spst * The Regents of the University of California. All rights reserved. 417683Spst * 517683Spst * Redistribution and use in source and binary forms, with or without 617683Spst * modification, are permitted provided that: (1) source code distributions 717683Spst * retain the above copyright notice and this paragraph in its entirety, (2) 817683Spst * distributions including binary code include the above copyright notice and 917683Spst * this paragraph in its entirety in the documentation or other materials 1017683Spst * provided with the distribution, and (3) all advertising materials mentioning 1117683Spst * features or use of this software display the following acknowledgement: 1217683Spst * ``This product includes software developed by the University of California, 1317683Spst * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 1417683Spst * the University nor the names of its contributors may be used to endorse 1517683Spst * or promote products derived from this software without specific prior 1617683Spst * written permission. 1717683Spst * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 1817683Spst * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 1917683Spst * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 2017683Spst */ 2117683Spst 2217683Spst#ifndef lint 23127664Sbmsstatic const char rcsid[] _U_ = 24214518Srpaulo "@(#) $Header: /tcpdump/master/libpcap/bpf_image.c,v 1.28 2008-01-02 04:16:46 guy Exp $ (LBL)"; 2517683Spst#endif 2617683Spst 2775107Sfenner#ifdef HAVE_CONFIG_H 2875107Sfenner#include "config.h" 2975107Sfenner#endif 3075107Sfenner 31214518Srpaulo#ifdef WIN32 32214518Srpaulo#include <pcap-stdinc.h> 33214518Srpaulo#else /* WIN32 */ 34214518Srpaulo#if HAVE_INTTYPES_H 35214518Srpaulo#include <inttypes.h> 36214518Srpaulo#elif HAVE_STDINT_H 37214518Srpaulo#include <stdint.h> 38214518Srpaulo#endif 39214518Srpaulo#ifdef HAVE_SYS_BITYPES_H 40214518Srpaulo#include <sys/bitypes.h> 41214518Srpaulo#endif 42214518Srpaulo#include <sys/types.h> 43214518Srpaulo#endif /* WIN32 */ 44214518Srpaulo 4517683Spst#include <stdio.h> 4617683Spst#include <string.h> 4717683Spst 4817683Spst#include "pcap-int.h" 4917683Spst 5017683Spst#ifdef HAVE_OS_PROTO_H 5117683Spst#include "os-proto.h" 5217683Spst#endif 5317683Spst 5417683Spstchar * 5517683Spstbpf_image(p, n) 56190944Srpaulo struct bpf_insn *p; 5717683Spst int n; 5817683Spst{ 5917683Spst int v; 60172677Smlaier const char *fmt, *op; 6117683Spst static char image[256]; 6217683Spst char operand[64]; 6317683Spst 6417683Spst v = p->k; 6517683Spst switch (p->code) { 6617683Spst 6717683Spst default: 6817683Spst op = "unimp"; 6917683Spst fmt = "0x%x"; 7017683Spst v = p->code; 7117683Spst break; 7217683Spst 7317683Spst case BPF_RET|BPF_K: 7417683Spst op = "ret"; 7517683Spst fmt = "#%d"; 7617683Spst break; 7717683Spst 7817683Spst case BPF_RET|BPF_A: 7917683Spst op = "ret"; 8017683Spst fmt = ""; 8117683Spst break; 8217683Spst 8317683Spst case BPF_LD|BPF_W|BPF_ABS: 8417683Spst op = "ld"; 8517683Spst fmt = "[%d]"; 8617683Spst break; 8717683Spst 8817683Spst case BPF_LD|BPF_H|BPF_ABS: 8917683Spst op = "ldh"; 9017683Spst fmt = "[%d]"; 9117683Spst break; 9217683Spst 9317683Spst case BPF_LD|BPF_B|BPF_ABS: 9417683Spst op = "ldb"; 9517683Spst fmt = "[%d]"; 9617683Spst break; 9717683Spst 9817683Spst case BPF_LD|BPF_W|BPF_LEN: 9917683Spst op = "ld"; 10017683Spst fmt = "#pktlen"; 10117683Spst break; 10217683Spst 10317683Spst case BPF_LD|BPF_W|BPF_IND: 10417683Spst op = "ld"; 10517683Spst fmt = "[x + %d]"; 10617683Spst break; 10717683Spst 10817683Spst case BPF_LD|BPF_H|BPF_IND: 10917683Spst op = "ldh"; 11017683Spst fmt = "[x + %d]"; 11117683Spst break; 11217683Spst 11317683Spst case BPF_LD|BPF_B|BPF_IND: 11417683Spst op = "ldb"; 11517683Spst fmt = "[x + %d]"; 11617683Spst break; 11717683Spst 11817683Spst case BPF_LD|BPF_IMM: 11917683Spst op = "ld"; 12017683Spst fmt = "#0x%x"; 12117683Spst break; 12217683Spst 12317683Spst case BPF_LDX|BPF_IMM: 12417683Spst op = "ldx"; 12517683Spst fmt = "#0x%x"; 12617683Spst break; 12717683Spst 12817683Spst case BPF_LDX|BPF_MSH|BPF_B: 12917683Spst op = "ldxb"; 13017683Spst fmt = "4*([%d]&0xf)"; 13117683Spst break; 13217683Spst 13317683Spst case BPF_LD|BPF_MEM: 13417683Spst op = "ld"; 13517683Spst fmt = "M[%d]"; 13617683Spst break; 13717683Spst 13817683Spst case BPF_LDX|BPF_MEM: 13917683Spst op = "ldx"; 14017683Spst fmt = "M[%d]"; 14117683Spst break; 14217683Spst 14317683Spst case BPF_ST: 14417683Spst op = "st"; 14517683Spst fmt = "M[%d]"; 14617683Spst break; 14717683Spst 14817683Spst case BPF_STX: 14917683Spst op = "stx"; 15017683Spst fmt = "M[%d]"; 15117683Spst break; 15217683Spst 15317683Spst case BPF_JMP|BPF_JA: 15417683Spst op = "ja"; 15517683Spst fmt = "%d"; 15617683Spst v = n + 1 + p->k; 15717683Spst break; 15817683Spst 15917683Spst case BPF_JMP|BPF_JGT|BPF_K: 16017683Spst op = "jgt"; 16117683Spst fmt = "#0x%x"; 16217683Spst break; 16317683Spst 16417683Spst case BPF_JMP|BPF_JGE|BPF_K: 16517683Spst op = "jge"; 16617683Spst fmt = "#0x%x"; 16717683Spst break; 16817683Spst 16917683Spst case BPF_JMP|BPF_JEQ|BPF_K: 17017683Spst op = "jeq"; 17117683Spst fmt = "#0x%x"; 17217683Spst break; 17317683Spst 17417683Spst case BPF_JMP|BPF_JSET|BPF_K: 17517683Spst op = "jset"; 17617683Spst fmt = "#0x%x"; 17717683Spst break; 17817683Spst 17917683Spst case BPF_JMP|BPF_JGT|BPF_X: 18017683Spst op = "jgt"; 18117683Spst fmt = "x"; 18217683Spst break; 18317683Spst 18417683Spst case BPF_JMP|BPF_JGE|BPF_X: 18517683Spst op = "jge"; 18617683Spst fmt = "x"; 18717683Spst break; 18817683Spst 18917683Spst case BPF_JMP|BPF_JEQ|BPF_X: 19017683Spst op = "jeq"; 19117683Spst fmt = "x"; 19217683Spst break; 19317683Spst 19417683Spst case BPF_JMP|BPF_JSET|BPF_X: 19517683Spst op = "jset"; 19617683Spst fmt = "x"; 19717683Spst break; 19817683Spst 19917683Spst case BPF_ALU|BPF_ADD|BPF_X: 20017683Spst op = "add"; 20117683Spst fmt = "x"; 20217683Spst break; 20317683Spst 20417683Spst case BPF_ALU|BPF_SUB|BPF_X: 20517683Spst op = "sub"; 20617683Spst fmt = "x"; 20717683Spst break; 20817683Spst 20917683Spst case BPF_ALU|BPF_MUL|BPF_X: 21017683Spst op = "mul"; 21117683Spst fmt = "x"; 21217683Spst break; 21317683Spst 21417683Spst case BPF_ALU|BPF_DIV|BPF_X: 21517683Spst op = "div"; 21617683Spst fmt = "x"; 21717683Spst break; 21817683Spst 21917683Spst case BPF_ALU|BPF_AND|BPF_X: 22017683Spst op = "and"; 22117683Spst fmt = "x"; 22217683Spst break; 22317683Spst 22417683Spst case BPF_ALU|BPF_OR|BPF_X: 22517683Spst op = "or"; 22617683Spst fmt = "x"; 22717683Spst break; 22817683Spst 22917683Spst case BPF_ALU|BPF_LSH|BPF_X: 23017683Spst op = "lsh"; 23117683Spst fmt = "x"; 23217683Spst break; 23317683Spst 23417683Spst case BPF_ALU|BPF_RSH|BPF_X: 23517683Spst op = "rsh"; 23617683Spst fmt = "x"; 23717683Spst break; 23817683Spst 23917683Spst case BPF_ALU|BPF_ADD|BPF_K: 24017683Spst op = "add"; 24117683Spst fmt = "#%d"; 24217683Spst break; 24317683Spst 24417683Spst case BPF_ALU|BPF_SUB|BPF_K: 24517683Spst op = "sub"; 24617683Spst fmt = "#%d"; 24717683Spst break; 24817683Spst 24917683Spst case BPF_ALU|BPF_MUL|BPF_K: 25017683Spst op = "mul"; 25117683Spst fmt = "#%d"; 25217683Spst break; 25317683Spst 25417683Spst case BPF_ALU|BPF_DIV|BPF_K: 25517683Spst op = "div"; 25617683Spst fmt = "#%d"; 25717683Spst break; 25817683Spst 25917683Spst case BPF_ALU|BPF_AND|BPF_K: 26017683Spst op = "and"; 26117683Spst fmt = "#0x%x"; 26217683Spst break; 26317683Spst 26417683Spst case BPF_ALU|BPF_OR|BPF_K: 26517683Spst op = "or"; 26617683Spst fmt = "#0x%x"; 26717683Spst break; 26817683Spst 26917683Spst case BPF_ALU|BPF_LSH|BPF_K: 27017683Spst op = "lsh"; 27117683Spst fmt = "#%d"; 27217683Spst break; 27317683Spst 27417683Spst case BPF_ALU|BPF_RSH|BPF_K: 27517683Spst op = "rsh"; 27617683Spst fmt = "#%d"; 27717683Spst break; 27817683Spst 27917683Spst case BPF_ALU|BPF_NEG: 28017683Spst op = "neg"; 28117683Spst fmt = ""; 28217683Spst break; 28317683Spst 28417683Spst case BPF_MISC|BPF_TAX: 28517683Spst op = "tax"; 28617683Spst fmt = ""; 28717683Spst break; 28817683Spst 28917683Spst case BPF_MISC|BPF_TXA: 29017683Spst op = "txa"; 29117683Spst fmt = ""; 29217683Spst break; 29317683Spst } 29475107Sfenner (void)snprintf(operand, sizeof operand, fmt, v); 295251129Sdelphij if (BPF_CLASS(p->code) == BPF_JMP && BPF_OP(p->code) != BPF_JA) { 296251129Sdelphij (void)snprintf(image, sizeof image, 297251129Sdelphij "(%03d) %-8s %-16s jt %d\tjf %d", 298251129Sdelphij n, op, operand, n + 1 + p->jt, n + 1 + p->jf); 299251129Sdelphij } else { 300251129Sdelphij (void)snprintf(image, sizeof image, 301251129Sdelphij "(%03d) %-8s %s", 302251129Sdelphij n, op, operand); 303251129Sdelphij } 30417683Spst return image; 30517683Spst} 306