On Solaris, for 64-bit builds, use the 64-bit pcap-config.

[tcpdump] / print-pflog.c

diff --git a/print-pflog.c b/print-pflog.c
index 78dd4db14b12073c82f318722c51025477dd5c2a..eb1b1766db004b1eee92cac81a4655eea924fd42 100644 (file)
--- a/print-pflog.c
+++ b/print-pflog.c
@@ -1,5 +1,3 @@
-/*     $OpenBSD: print-pflog.c,v 1.9 2001/09/18 14:52:53 jakob Exp $   */
-

 /*
  * Copyright (c) 1990, 1991, 1993, 1994, 1995, 1996
  *     The Regents of the University of California.  All rights reserved.
 /*
  * Copyright (c) 1990, 1991, 1993, 1994, 1995, 1996
  *     The Regents of the University of California.  All rights reserved.


@@ -21,137 +19,169 @@
  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  */
 
  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  */
 

-#ifndef lint
-static const char rcsid[] =
-    "@(#) $Header: /tcpdump/master/tcpdump/print-pflog.c,v 1.1 2002-02-05 10:07:39 guy Exp $ (LBL)";
+/* \summary: OpenBSD packet filter log file printer */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>

 #endif
 
 #endif
 

-#include <sys/param.h>
-#include <sys/time.h>
+#ifndef HAVE_NET_PFVAR_H
+#error "No pf headers available"
+#endif
+#include <sys/types.h>

 #include <sys/socket.h>
 #include <sys/socket.h>

-
-#include <netinet/in.h>
-
-#include <stdio.h>
-#include <pcap.h>
-
-#include "interface.h"
-#include "addrtoname.h"
-
-/* The header in OpenBSD pflog files. */
-
-struct pfloghdr {
-       u_int32_t af;
-       char    ifname[16];
-       int16_t rnr;
-       u_int16_t reason;
-       u_int16_t action;
-       u_int16_t dir;
-};
-#define PFLOG_HDRLEN    sizeof(struct pfloghdr)
-
-/* Actions */
-#define PF_PASS  0
-#define PF_DROP  1
-#define PF_SCRUB 2
-
-/* Directions */
-#define PF_IN  0
-#define PF_OUT 1
-
-static struct tok pf_reasons[] = {
-       { 0,    "match" },
-       { 1,    "bad-offset" },
-       { 2,    "fragment" },
-       { 3,    "short" },
-       { 4,    "normalize" },
-       { 5,    "memory" },
+#include <net/if.h>
+#include <net/pfvar.h>
+#include <net/if_pflog.h>
+
+#include "netdissect-stdinc.h"
+
+#include "netdissect.h"
+#include "extract.h"
+
+
+static const 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 }
 };
 
        { 0,    NULL }
 };
 

-static struct tok pf_actions[] = {
-       { PF_PASS,      "pass" },
-       { PF_DROP,      "drop" },
-       { PF_SCRUB,     "scrub" },
-       { 0,            NULL }
+static const 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[] = {
+static const struct tok pf_directions[] = {
+       { PF_INOUT,     "in/out" },

        { PF_IN,        "in" },
        { PF_OUT,       "out" },
        { 0,            NULL }
 };
 
        { PF_IN,        "in" },
        { PF_OUT,       "out" },
        { 0,            NULL }
 };
 

-#define OPENBSD_AF_INET                2
-#define OPENBSD_AF_INET6       24
+/* For reading capture files on other systems */
+#define        OPENBSD_AF_INET         2
+#define        OPENBSD_AF_INET6        24

 
 static void
 
 static void

-pflog_print(const struct pfloghdr *hdr)
+pflog_print(netdissect_options *ndo, const struct pfloghdr *hdr)

 {
 {

-       printf("rule %d/%s: %s %s on %s: ",
-           (short)ntohs(hdr->rnr),
-           tok2str(pf_reasons, "unkn(%u)", ntohs(hdr->reason)),
-           tok2str(pf_actions, "unkn(%u)", ntohs(hdr->action)),
-           tok2str(pf_directions, "unkn(%u)", ntohs(hdr->dir)),
-           hdr->ifname);
+       uint32_t rulenr, subrulenr;
+
+       ndo->ndo_protocol = "pflog";
+       rulenr = GET_BE_U_4(&hdr->rulenr);
+       subrulenr = GET_BE_U_4(&hdr->subrulenr);
+       if (subrulenr == (uint32_t)-1)
+               ND_PRINT("rule %u/", rulenr);
+       else {
+               ND_PRINT("rule %u.", rulenr);
+               nd_printjnp(ndo, (const u_char*)hdr->ruleset, PFLOG_RULESET_NAME_SIZE);
+               ND_PRINT(".%u/", subrulenr);
+       }
+
+       ND_PRINT("%s: %s %s on ",
+           tok2str(pf_reasons, "unkn(%u)", GET_U_1(&hdr->reason)),
+           tok2str(pf_actions, "unkn(%u)", GET_U_1(&hdr->action)),
+           tok2str(pf_directions, "unkn(%u)", GET_U_1(&hdr->dir)));
+       nd_printjnp(ndo, (const u_char*)hdr->ifname, IFNAMSIZ);
+       ND_PRINT(": ");

 }
 
 void
 }
 
 void

-pflog_if_print(u_char *user, const struct pcap_pkthdr *h,
-     register const u_char *p)
+pflog_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h,
+               const u_char *p)

 {
        u_int length = h->len;
 {
        u_int length = h->len;

+       u_int hdrlen;

        u_int caplen = h->caplen;
        const struct pfloghdr *hdr;
        u_int caplen = h->caplen;
        const struct pfloghdr *hdr;

-       u_int8_t af;
+       uint8_t af;
+
+       ndo->ndo_protocol = "pflog";
+       /* check length */
+       if (caplen < sizeof(uint8_t)) {
+               nd_print_trunc(ndo);
+               ndo->ndo_ll_hdr_len += h->caplen;
+               return;
+       }

 
 

-       ts_print(&h->ts);
+#define MIN_PFLOG_HDRLEN       45
+       hdr = (const struct pfloghdr *)p;
+       if (GET_U_1(&hdr->length) < MIN_PFLOG_HDRLEN) {
+               ND_PRINT("[pflog: invalid header length!]");
+               ndo->ndo_ll_hdr_len += GET_U_1(&hdr->length);   /* XXX: not really */
+               return;
+       }
+       hdrlen = BPF_WORDALIGN(hdr->length);

 
 

-       if (caplen < PFLOG_HDRLEN) {
-               printf("[|pflog]");
-               goto out;
+       if (caplen < hdrlen) {
+               nd_print_trunc(ndo);
+               ndo->ndo_ll_hdr_len += hdrlen;  /* XXX: true? */
+               return;

        }
 
        }
 

-       /*
-        * Some printers want to get back at the link level addresses,
-        * and/or check that they're not walking off the end of the packet.
-        * Rather than pass them all the way down, we set these globals.
-        */
-       packetp = p;
-       snapend = p + caplen;
+       /* print what we know */
+       ND_TCHECK_SIZE(hdr);
+       if (ndo->ndo_eflag)
+               pflog_print(ndo, hdr);

 
 

-       hdr = (const struct pfloghdr *)p;
-       if (eflag)
-               pflog_print(hdr);
-       af = ntohl(hdr->af);
-       length -= PFLOG_HDRLEN;
-       caplen -= PFLOG_HDRLEN;
-       p += PFLOG_HDRLEN;
+       /* skip to the real packet */
+       af = GET_U_1(&hdr->af);
+       length -= hdrlen;
+       caplen -= hdrlen;
+       p += hdrlen;

        switch (af) {
 
        switch (af) {
 

-       case OPENBSD_AF_INET:
-               ip_print(p, length);
-               break;
-
-#ifdef INET6
-       case OPENBSD_AF_INET6:
-               ip6_print(p, length);
-               break;
+               case AF_INET:
+#if OPENBSD_AF_INET != AF_INET
+               case OPENBSD_AF_INET:           /* XXX: read pcap files */

 #endif
 #endif

+                       ip_print(ndo, p, length);
+                       break;
+
+#if defined(AF_INET6) || defined(OPENBSD_AF_INET6)
+#ifdef AF_INET6
+               case AF_INET6:
+#endif /* AF_INET6 */
+#if !defined(AF_INET6) || OPENBSD_AF_INET6 != AF_INET6
+               case OPENBSD_AF_INET6:          /* XXX: read pcap files */
+#endif /* !defined(AF_INET6) || OPENBSD_AF_INET6 != AF_INET6 */
+                       ip6_print(ndo, p, length);
+                       break;
+#endif /* defined(AF_INET6) || defined(OPENBSD_AF_INET6) */

 
        default:
                /* address family not handled, print raw packet */
 
        default:
                /* address family not handled, print raw packet */

-               if (!eflag)
-                       pflog_print(hdr);
-               if (!xflag && !qflag)
-                       default_print(p, caplen);
+               if (!ndo->ndo_eflag)
+                       pflog_print(ndo, hdr);
+               if (!ndo->ndo_suppress_default_print)
+                       ND_DEFAULTPRINT(p, caplen);

        }
 
        }
 

-       if (xflag)
-               default_print(p, caplen);
-out:
-       putchar('\n');
-       --infodelay;
-       if (infoprint)
-               info(0);
+       ndo->ndo_ll_hdr_len += hdrlen;
+       return;
+trunc:
+       nd_print_trunc(ndo);
+       ndo->ndo_ll_hdr_len += hdrlen;

 }
 }