| /* |
| * 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. |
| */ |
| |
| #ifndef lint |
| static const char rcsid[] _U_ = |
| "@(#) $Header: /tcpdump/master/tcpdump/print-pflog.c,v 1.16 2007-09-12 19:36:18 guy Exp $ (LBL)"; |
| #endif |
| |
| #ifdef HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| |
| #ifndef HAVE_NET_PFVAR_H |
| #error "No pf headers available" |
| #endif |
| #include <sys/types.h> |
| #include <sys/socket.h> |
| #include <net/if.h> |
| #include <net/pfvar.h> |
| #include <net/if_pflog.h> |
| |
| #include <tcpdump-stdinc.h> |
| |
| #include <stdio.h> |
| #include <pcap.h> |
| |
| #include "extract.h" |
| #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)" }, |
| { 6, "6(bad-timestamp)" }, |
| { 7, "7(congestion)" }, |
| { 8, "8(ip-option)" }, |
| { 9, "9(proto-cksum)" }, |
| { 10, "10(state-mismatch)" }, |
| { 11, "11(state-insert)" }, |
| { 12, "12(state-limit)" }, |
| { 13, "13(src-limit)" }, |
| { 14, "14(synproxy)" }, |
| { 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) |
| { |
| u_int32_t rulenr, subrulenr; |
| |
| rulenr = EXTRACT_32BITS(&hdr->rulenr); |
| subrulenr = EXTRACT_32BITS(&hdr->subrulenr); |
| if (subrulenr == (u_int32_t)-1) |
| printf("rule %u/", rulenr); |
| else |
| printf("rule %u.%s.%u/", rulenr, hdr->ruleset, 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(gndo, 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(gndo, p, length); |
| break; |
| #endif |
| |
| default: |
| /* address family not handled, print raw packet */ |
| if (!eflag) |
| pflog_print(hdr); |
| if (!suppress_default_print) |
| default_print(p, caplen); |
| } |
| |
| return (hdrlen); |
| trunc: |
| printf("[|pflog]"); |
| return (hdrlen); |
| } |
| |
| /* |
| * Local Variables: |
| * c-style: whitesmith |
| * c-basic-offset: 8 |
| * End: |
| */ |