* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
-#ifndef lint
-static const char rcsid[] _U_ =
- "@(#) $Header: /tcpdump/master/tcpdump/print-null.c,v 1.53 2005-04-06 21:32:41 mcr Exp $ (LBL)";
-#endif
+/* \summary: BSD loopback device printer */
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
+#include <config.h>
-#include <tcpdump-stdinc.h>
+#include "netdissect-stdinc.h"
-#include <pcap.h>
-#include <stdio.h>
-#include <string.h>
+#define ND_LONGJMP_FROM_TCHECK
+#include "netdissect.h"
+#include "extract.h"
+#include "af.h"
-#include "interface.h"
-#include "addrtoname.h"
-
-#include "ip.h"
-#ifdef INET6
-#include "ip6.h"
-#endif
/*
* The DLT_NULL packet header is 4 bytes long. It contains a host-byte-order
*/
#define NULL_HDRLEN 4
-/*
- * BSD AF_ values.
- *
- * Unfortunately, the BSDs don't all use the same value for AF_INET6,
- * so, because we want to be able to read captures from all of the BSDs,
- * we check for all of them.
- */
-#define BSD_AF_INET 2
-#define BSD_AF_NS 6 /* XEROX NS protocols */
-#define BSD_AF_ISO 7
-#define BSD_AF_APPLETALK 16
-#define BSD_AF_IPX 23
-#define BSD_AF_INET6_BSD 24 /* OpenBSD (and probably NetBSD), BSD/OS */
-#define BSD_AF_INET6_FREEBSD 28
-#define BSD_AF_INET6_DARWIN 30
-
-static void
-null_print(u_int family, u_int length)
-{
- if (nflag)
- printf("AF %u ", family);
- else {
- switch (family) {
-
- case BSD_AF_INET:
- printf("ip ");
- break;
-
-#ifdef INET6
- case BSD_AF_INET6_BSD:
- case BSD_AF_INET6_FREEBSD:
- case BSD_AF_INET6_DARWIN:
- printf("ip6 ");
- break;
-#endif
-
- case BSD_AF_NS:
- printf("ns ");
- break;
-
- case BSD_AF_ISO:
- printf("osi ");
- break;
-
- case BSD_AF_APPLETALK:
- printf("atalk ");
- break;
-
- case BSD_AF_IPX:
- printf("ipx ");
- break;
-
- default:
- printf("AF %u ", family);
- break;
- }
- }
- printf("%d: ", length);
-}
-
/*
* Byte-swap a 32-bit number.
* ("htonl()" or "ntohl()" won't work - we want to byte-swap even on
#define SWAPLONG(y) \
((((y)&0xff)<<24) | (((y)&0xff00)<<8) | (((y)&0xff0000)>>8) | (((y)>>24)&0xff))
+static void
+null_hdr_print(netdissect_options *ndo, uint32_t family, u_int length)
+{
+ if (!ndo->ndo_qflag) {
+ ND_PRINT("AF %s (%u)",
+ tok2str(bsd_af_values,"Unknown",family),family);
+ } else {
+ ND_PRINT("%s",
+ tok2str(bsd_af_values,"Unknown AF %u",family));
+ }
+
+ ND_PRINT(", length %u: ", length);
+}
+
/*
* This is the top level routine of the printer. 'p' points
* to the ether header of the packet, 'h->ts' is the timestamp,
* 'h->len' is the length of the packet off the wire, and 'h->caplen'
* is the number of bytes actually captured.
*/
-u_int
-null_if_print(const struct pcap_pkthdr *h, const u_char *p)
+void
+null_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p)
{
u_int length = h->len;
u_int caplen = h->caplen;
- u_int family;
+ uint32_t family;
- if (caplen < NULL_HDRLEN) {
- printf("[|null]");
- return (NULL_HDRLEN);
- }
+ ndo->ndo_protocol = "null";
+ ND_TCHECK_LEN(p, NULL_HDRLEN);
+ ndo->ndo_ll_hdr_len += NULL_HDRLEN;
- memcpy((char *)&family, (char *)p, sizeof(family));
+ family = GET_HE_U_4(p);
/*
* This isn't necessarily in our host byte order; if this is
if ((family & 0xFFFF0000) != 0)
family = SWAPLONG(family);
+ if (ndo->ndo_eflag)
+ null_hdr_print(ndo, family, length);
+
length -= NULL_HDRLEN;
caplen -= NULL_HDRLEN;
p += NULL_HDRLEN;
- if (eflag)
- null_print(family, length);
-
switch (family) {
case BSD_AF_INET:
- ip_print(gndo, p, length);
+ ip_print(ndo, p, length);
break;
-#ifdef INET6
case BSD_AF_INET6_BSD:
case BSD_AF_INET6_FREEBSD:
case BSD_AF_INET6_DARWIN:
- ip6_print(p, length);
+ ip6_print(ndo, p, length);
break;
-#endif
case BSD_AF_ISO:
- isoclns_print(p, length, caplen);
+ isoclns_print(ndo, p, length);
break;
case BSD_AF_APPLETALK:
- atalk_print(p, length);
+ atalk_print(ndo, p, length);
break;
case BSD_AF_IPX:
- ipx_print(p, length);
+ ipx_print(ndo, p, length);
break;
default:
/* unknown AF_ value */
- if (!eflag)
- null_print(family, length + NULL_HDRLEN);
- if (!xflag && !qflag)
- default_print(p, caplen);
+ if (!ndo->ndo_eflag)
+ null_hdr_print(ndo, family, length + NULL_HDRLEN);
+ if (!ndo->ndo_suppress_default_print)
+ ND_DEFAULTPRINT(p, caplen);
}
-
- return (NULL_HDRLEN);
}
-
-/*
- * Local Variables:
- * c-style: whitesmith
- * c-basic-offset: 8
- * End:
- */
projects / tcpdump / blobdiff