168 lines
3.9 KiB
C
168 lines
3.9 KiB
C
/* $NetBSD: print-pflog.c,v 1.4 2002/06/15 02:55:43 itojun Exp $ */
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/* $OpenBSD: print-pflog.c,v 1.9 2001/09/18 14:52:53 jakob Exp $ */
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/*
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* Copyright (c) 1990, 1991, 1993, 1994, 1995, 1996
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that: (1) source code distributions
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* retain the above copyright notice and this paragraph in its entirety, (2)
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* distributions including binary code include the above copyright notice and
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* this paragraph in its entirety in the documentation or other materials
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* provided with the distribution, and (3) all advertising materials mentioning
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* features or use of this software display the following acknowledgement:
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* ``This product includes software developed by the University of California,
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* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
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* the University nor the names of its contributors may be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static const char rcsid[] =
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"@(#) Header: /tcpdump/master/tcpdump/print-pflog.c,v 1.2 2002/02/06 11:05:35 guy Exp (LBL)";
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#else
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__RCSID("$NetBSD: print-pflog.c,v 1.4 2002/06/15 02:55:43 itojun Exp $");
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#endif
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#endif
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <sys/param.h>
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#include <sys/time.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <stdio.h>
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#include <pcap.h>
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#include "interface.h"
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#include "addrtoname.h"
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/* The header in OpenBSD pflog files. */
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struct pfloghdr {
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u_int32_t af;
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char ifname[16];
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int16_t rnr;
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u_int16_t reason;
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u_int16_t action;
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u_int16_t dir;
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};
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#define PFLOG_HDRLEN sizeof(struct pfloghdr)
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/* Actions */
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#define PF_PASS 0
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#define PF_DROP 1
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#define PF_SCRUB 2
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/* Directions */
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#define PF_IN 0
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#define PF_OUT 1
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static struct tok pf_reasons[] = {
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{ 0, "match" },
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{ 1, "bad-offset" },
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{ 2, "fragment" },
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{ 3, "short" },
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{ 4, "normalize" },
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{ 5, "memory" },
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{ 0, NULL }
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};
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static struct tok pf_actions[] = {
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{ PF_PASS, "pass" },
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{ PF_DROP, "drop" },
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{ PF_SCRUB, "scrub" },
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{ 0, NULL }
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};
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static struct tok pf_directions[] = {
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{ PF_IN, "in" },
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{ PF_OUT, "out" },
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{ 0, NULL }
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};
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#define OPENBSD_AF_INET 2
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#define OPENBSD_AF_INET6 24
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static void
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pflog_print(const struct pfloghdr *hdr)
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{
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printf("rule %d/%s: %s %s on %s: ",
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(short)ntohs(hdr->rnr),
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tok2str(pf_reasons, "unkn(%u)", ntohs(hdr->reason)),
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tok2str(pf_actions, "unkn(%u)", ntohs(hdr->action)),
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tok2str(pf_directions, "unkn(%u)", ntohs(hdr->dir)),
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hdr->ifname);
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}
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void
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pflog_if_print(u_char *user, const struct pcap_pkthdr *h,
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register const u_char *p)
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{
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u_int length = h->len;
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u_int caplen = h->caplen;
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const struct pfloghdr *hdr;
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u_int8_t af;
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ts_print(&h->ts);
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if (caplen < PFLOG_HDRLEN) {
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printf("[|pflog]");
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goto out;
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}
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/*
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* Some printers want to get back at the link level addresses,
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* and/or check that they're not walking off the end of the packet.
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* Rather than pass them all the way down, we set these globals.
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*/
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packetp = p;
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snapend = p + caplen;
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hdr = (const struct pfloghdr *)p;
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if (eflag)
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pflog_print(hdr);
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af = ntohl(hdr->af);
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length -= PFLOG_HDRLEN;
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caplen -= PFLOG_HDRLEN;
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p += PFLOG_HDRLEN;
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switch (af) {
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case OPENBSD_AF_INET:
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ip_print(p, length);
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break;
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#ifdef INET6
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case OPENBSD_AF_INET6:
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ip6_print(p, length);
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break;
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#endif
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default:
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/* address family not handled, print raw packet */
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if (!eflag)
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pflog_print(hdr);
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if (!xflag && !qflag)
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default_print(p, caplen);
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}
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if (xflag)
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default_print(p, caplen);
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out:
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putchar('\n');
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--infodelay;
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if (infoprint)
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info(0);
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}
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