/* $NetBSD: print-pflog.c,v 1.6 2004/09/27 23:04:24 dyoung Exp $ */ /* $OpenBSD: print-pflog.c,v 1.14 2003/06/21 21:01:15 dhartmei Exp $ */ /* * Copyright (c) 1990, 1991, 1993, 1994, 1995, 1996 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that: (1) source code distributions * retain the above copyright notice and this paragraph in its entirety, (2) * distributions including binary code include the above copyright notice and * this paragraph in its entirety in the documentation or other materials * provided with the distribution, and (3) all advertising materials mentioning * features or use of this software display the following acknowledgement: * ``This product includes software developed by the University of California, * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of * the University nor the names of its contributors may be used to endorse * or promote products derived from this software without specific prior * written permission. * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. */ #include #ifndef lint #if 0 static const char rcsid[] _U_ = "@(#) Header: /tcpdump/master/tcpdump/print-pflog.c,v 1.7.2.4 2004/03/29 21:56:26 guy Exp (LBL)"; #else __RCSID("$NetBSD: print-pflog.c,v 1.6 2004/09/27 23:04:24 dyoung Exp $"); #endif #endif #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "interface.h" #include "addrtoname.h" static struct tok pf_reasons[] = { { 0, "0(match)" }, { 1, "1(bad-offset)" }, { 2, "2(fragment)" }, { 3, "3(short)" }, { 4, "4(normalize)" }, { 5, "5(memory)" }, { 0, NULL } }; static struct tok pf_actions[] = { { PF_PASS, "pass" }, { PF_DROP, "block" }, { PF_SCRUB, "scrub" }, { PF_NAT, "nat" }, { PF_NONAT, "nat" }, { PF_BINAT, "binat" }, { PF_NOBINAT, "binat" }, { PF_RDR, "rdr" }, { PF_NORDR, "rdr" }, { PF_SYNPROXY_DROP, "synproxy-drop" }, { 0, NULL } }; static struct tok pf_directions[] = { { PF_INOUT, "in/out" }, { PF_IN, "in" }, { PF_OUT, "out" }, { 0, NULL } }; /* For reading capture files on other systems */ #define OPENBSD_AF_INET 2 #define OPENBSD_AF_INET6 24 static void pflog_print(const struct pfloghdr *hdr) { if (ntohl(hdr->subrulenr) == (u_int32_t)-1) printf("rule %u/", ntohl(hdr->rulenr)); else printf("rule %u.%s.%u/", ntohl(hdr->rulenr), hdr->ruleset, ntohl(hdr->subrulenr)); printf("%s: %s %s on %s: ", tok2str(pf_reasons, "unkn(%u)", hdr->reason), tok2str(pf_actions, "unkn(%u)", hdr->action), tok2str(pf_directions, "unkn(%u)", hdr->dir), hdr->ifname); } u_int pflog_if_print(const struct pcap_pkthdr *h, register const u_char *p) { u_int length = h->len; u_int hdrlen; u_int caplen = h->caplen; const struct pfloghdr *hdr; u_int8_t af; /* check length */ if (caplen < sizeof(u_int8_t)) { printf("[|pflog]"); return (caplen); } #define MIN_PFLOG_HDRLEN 45 hdr = (struct pfloghdr *)p; if (hdr->length < MIN_PFLOG_HDRLEN) { printf("[pflog: invalid header length!]"); return (hdr->length); /* XXX: not really */ } hdrlen = BPF_WORDALIGN(hdr->length); if (caplen < hdrlen) { printf("[|pflog]"); return (hdrlen); /* XXX: true? */ } /* print what we know */ hdr = (struct pfloghdr *)p; TCHECK(*hdr); if (eflag) pflog_print(hdr); /* skip to the real packet */ af = hdr->af; length -= hdrlen; caplen -= hdrlen; p += hdrlen; switch (af) { case AF_INET: #if OPENBSD_AF_INET != AF_INET case OPENBSD_AF_INET: /* XXX: read pcap files */ #endif ip_print(p, length); break; #ifdef INET6 case AF_INET6: #if OPENBSD_AF_INET6 != AF_INET6 case OPENBSD_AF_INET6: /* XXX: read pcap files */ #endif ip6_print(p, length); break; #endif } return (hdrlen); trunc: printf("[|pflog]"); return (hdrlen); }