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CHANGES: Add/move change(s) backported to 4.99
[tcpdump] / print-pflog.c
diff --git a/print-pflog.c b/print-pflog.c
index d1a461561ee204dc617a965272e2e97077c55570..787dbac1424d11d85ad5728b6539b13ce769fe93 100644 (file)
--- a/print-pflog.c
+++ b/print-pflog.c
@@ -19,169 +19,188 @@
  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  */
 
  * 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)";
+/* \summary: *BSD/Darwin packet filter log file printer */
+
+#include <config.h>
+
+#include "netdissect-stdinc.h"
+
+#include "netdissect.h"
+#include "extract.h"
+#include "af.h"
+
+#include "pflog.h"
+
+static const struct tok pf_reasons[] = {
+       { PFRES_MATCH,          "0(match)" },
+       { PFRES_BADOFF,         "1(bad-offset)" },
+       { PFRES_FRAG,           "2(fragment)" },
+       { PFRES_SHORT,          "3(short)" },
+       { PFRES_NORM,           "4(normalize)" },
+       { PFRES_MEMORY,         "5(memory)" },
+       { PFRES_TS,             "6(bad-timestamp)" },
+       { PFRES_CONGEST,        "7(congestion)" },
+       { PFRES_IPOPTIONS,      "8(ip-option)" },
+       { PFRES_PROTCKSUM,      "9(proto-cksum)" },
+       { PFRES_BADSTATE,       "10(state-mismatch)" },
+       { PFRES_STATEINS,       "11(state-insert)" },
+       { PFRES_MAXSTATES,      "12(state-limit)" },
+       { PFRES_SRCLIMIT,       "13(src-limit)" },
+       { PFRES_SYNPROXY,       "14(synproxy)" },
+#if defined(__FreeBSD__)
+       { PFRES_MAPFAILED,      "15(map-failed)" },
+#elif defined(__NetBSD__)
+       { PFRES_STATELOCKED,    "15(state-locked)" },
+#elif defined(__OpenBSD__)
+       { PFRES_TRANSLATE,      "15(translate)" },
+       { PFRES_NOROUTE,        "16(no-route)" },
+#elif defined(__APPLE__)
+       { PFRES_DUMMYNET,       "15(dummynet)" },
 #endif
 #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 "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 }
 };
 
        { 0,    NULL }
 };
 
-static struct tok pf_actions[] = {
+static const struct tok pf_actions[] = {
        { PF_PASS,              "pass" },
        { PF_DROP,              "block" },
        { PF_SCRUB,             "scrub" },
        { PF_PASS,              "pass" },
        { PF_DROP,              "block" },
        { PF_SCRUB,             "scrub" },
+       { PF_NOSCRUB,           "noscrub" },
        { PF_NAT,               "nat" },
        { PF_NAT,               "nat" },
-       { PF_NONAT,             "nat" },
+       { PF_NONAT,             "nonat" },
        { PF_BINAT,             "binat" },
        { PF_BINAT,             "binat" },
-       { PF_NOBINAT,           "binat" },
+       { PF_NOBINAT,           "nobinat" },
        { PF_RDR,               "rdr" },
        { PF_RDR,               "rdr" },
-       { PF_NORDR,             "rdr" },
+       { PF_NORDR,             "nordr" },
        { PF_SYNPROXY_DROP,     "synproxy-drop" },
        { PF_SYNPROXY_DROP,     "synproxy-drop" },
+#if defined(__FreeBSD__)
+       { PF_DEFER,             "defer" },
+       { PF_MATCH,             "match" },
+#elif defined(__OpenBSD__)
+       { PF_DEFER,             "defer" },
+       { PF_MATCH,             "match" },
+       { PF_DIVERT,            "divert" },
+       { PF_RT,                "rt" },
+       { PF_AFRT,              "afrt" },
+#elif defined(__APPLE__)
+       { PF_DUMMYNET,          "dummynet" },
+       { PF_NODUMMYNET,        "nodummynet" },
+       { PF_NAT64,             "nat64" },
+       { PF_NONAT64,           "nonat64" },
+#endif
        { 0,                    NULL }
 };
 
        { 0,                    NULL }
 };
 
-static struct tok pf_directions[] = {
+static const struct tok pf_directions[] = {
        { PF_INOUT,     "in/out" },
        { PF_IN,        "in" },
        { PF_OUT,       "out" },
        { PF_INOUT,     "in/out" },
        { PF_IN,        "in" },
        { PF_OUT,       "out" },
+#if defined(__OpenBSD__)
+       { PF_FWD,       "fwd" },
+#endif
        { 0,            NULL }
 };
 
        { 0,            NULL }
 };
 
-/* 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)
 {
 {
-       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);
+       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, PFLOG_IFNAMSIZ);
+       ND_PRINT(": ");
 }
 
 }
 
-u_int
-pflog_if_print(const struct pcap_pkthdr *h, register const u_char *p)
+void
+pflog_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h,
+               const u_char *p)
 {
        u_int length = h->len;
        u_int hdrlen;
        u_int caplen = h->caplen;
        const struct pfloghdr *hdr;
 {
        u_int length = h->len;
        u_int hdrlen;
        u_int caplen = h->caplen;
        const struct pfloghdr *hdr;
-       u_int8_t af;
+       uint8_t af;
 
 
+       ndo->ndo_protocol = "pflog";
        /* check length */
        /* check length */
-       if (caplen < sizeof(u_int8_t)) {
-               printf("[|pflog]");
-               return (caplen);
+       if (caplen < sizeof(uint8_t)) {
+               nd_print_trunc(ndo);
+               ndo->ndo_ll_hdr_len += h->caplen;
+               return;
        }
 
        }
 
-#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 */
+       hdr = (const struct pfloghdr *)p;
+       hdrlen = GET_U_1(hdr->length);
+       if (hdrlen < MIN_PFLOG_HDRLEN) {
+               ND_PRINT("[pflog: invalid header length!]");
+               ndo->ndo_ll_hdr_len += hdrlen;  /* XXX: not really */
+               return;
        }
        }
-       hdrlen = BPF_WORDALIGN(hdr->length);
+       hdrlen = roundup2(hdrlen, 4);
 
        if (caplen < hdrlen) {
 
        if (caplen < hdrlen) {
-               printf("[|pflog]");
-               return (hdrlen);        /* XXX: true? */
+               nd_print_trunc(ndo);
+               ndo->ndo_ll_hdr_len += hdrlen;  /* XXX: true? */
+               return;
        }
 
        /* print what we know */
        }
 
        /* print what we know */
-       hdr = (struct pfloghdr *)p;
-       TCHECK(*hdr);
-       if (eflag)
-               pflog_print(hdr);
-       
+       ND_TCHECK_SIZE(hdr);
+       if (ndo->ndo_eflag)
+               pflog_print(ndo, hdr);
+
        /* skip to the real packet */
        /* skip to the real packet */
-       af = hdr->af;
+       af = GET_U_1(hdr->af);
        length -= hdrlen;
        caplen -= hdrlen;
        p += hdrlen;
        switch (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);
+               /*
+                * If there's a system that doesn't use the AF_INET
+                * from 4.2BSD, feel free to add its value to af.h
+                * and use it here.
+                *
+                * Hopefully, there isn't.
+                */
+               case BSD_AFNUM_INET:
+                       ip_print(ndo, p, length);
                        break;
 
                        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);
+               /*
+                * Try all AF_INET6 values for all systems with pflog,
+                * including Darwin.
+                */
+               case BSD_AFNUM_INET6_BSD:
+               case BSD_AFNUM_INET6_FREEBSD:
+               case BSD_AFNUM_INET6_DARWIN:
+                       ip6_print(ndo, p, length);
                        break;
                        break;
-#endif
 
        default:
                /* address family not handled, print raw packet */
 
        default:
                /* address family not handled, print raw packet */
-               if (!eflag)
-                       pflog_print(hdr);
-               if (!suppress_default_print)
-                       default_print(p, caplen);
+               if (!ndo->ndo_eflag)
+                       pflog_print(ndo, hdr);
+               if (!ndo->ndo_suppress_default_print)
+                       ND_DEFAULTPRINT(p, caplen);
        }
        }
-       
-       return (hdrlen);
+
+       ndo->ndo_ll_hdr_len += hdrlen;
+       return;
 trunc:
 trunc:
-       printf("[|pflog]");
-       return (hdrlen);
+       nd_print_trunc(ndo);
+       ndo->ndo_ll_hdr_len += hdrlen;
 }
 }
-
-/*
- * Local Variables:
- * c-style: whitesmith
- * c-basic-offset: 8
- * End:
- */
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