-/* $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.
*/
#ifndef lint
-static const char rcsid[] =
- "@(#) $Header: /tcpdump/master/tcpdump/print-pflog.c,v 1.7 2002-12-19 09:39:14 guy Exp $ (LBL)";
+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"
-/* 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" },
+ { 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, "drop" },
- { PF_SCRUB, "scrub" },
- { 0, NULL }
+ { 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 }
};
-#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
pflog_print(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)),
+ 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);
}
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;
- if (caplen < PFLOG_HDRLEN) {
+ /* check length */
+ if (caplen < sizeof(u_int8_t)) {
printf("[|pflog]");
return (caplen);
}
- hdr = (const struct pfloghdr *)p;
+#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);
- af = ntohl(hdr->af);
- length -= PFLOG_HDRLEN;
- caplen -= PFLOG_HDRLEN;
- p += PFLOG_HDRLEN;
+
+ /* skip to the real packet */
+ af = hdr->af;
+ length -= hdrlen;
+ caplen -= hdrlen;
+ p += hdrlen;
switch (af) {
- case OPENBSD_AF_INET:
- ip_print(p, length);
- break;
+ 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 OPENBSD_AF_INET6:
- ip6_print(p, length);
- break;
+ 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 (!xflag && !qflag)
+ if (!suppress_default_print)
default_print(p, caplen);
}
-
- return (PFLOG_HDRLEN);
+
+ return (hdrlen);
+trunc:
+ printf("[|pflog]");
+ return (hdrlen);
}
+
+/*
+ * Local Variables:
+ * c-style: whitesmith
+ * c-basic-offset: 8
+ * End:
+ */
projects / tcpdump / blobdiff