X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/fe3253b9b8fad9e75f863157eba0780418182f17..refs/heads/master:/print-null.c

diff --git a/print-null.c b/print-null.c
index c6b73897..725d5839 100644
--- a/print-null.c
+++ b/print-null.c
@@ -19,25 +19,18 @@
  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  */
 
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
+/* \summary: BSD loopback device printer */
 
-#include <tcpdump-stdinc.h>
+#include <config.h>
 
-#include <pcap.h>
-#include <stdio.h>
-#include <string.h>
+#include "netdissect-stdinc.h"
 
-#include "interface.h"
-#include "addrtoname.h"
-
-#include "ip.h"
-#ifdef INET6
-#include "ip6.h"
-#endif
+#define ND_LONGJMP_FROM_TCHECK
+#include "netdissect.h"
+#include "extract.h"
 #include "af.h"
 
+
 /*
  * The DLT_NULL packet header is 4 bytes long. It contains a host-byte-order
  * 32-bit integer that specifies the family, e.g. AF_INET.
@@ -58,18 +51,18 @@
 #define	SWAPLONG(y) \
 ((((y)&0xff)<<24) | (((y)&0xff00)<<8) | (((y)&0xff0000)>>8) | (((y)>>24)&0xff))
 
-static inline void
-null_hdr_print(u_int family, u_int length)
+static void
+null_hdr_print(netdissect_options *ndo, uint32_t family, u_int length)
 {
-	if (!qflag) {
-		(void)printf("AF %s (%u)",
+	if (!ndo->ndo_qflag) {
+		ND_PRINT("AF %s (%u)",
 			tok2str(bsd_af_values,"Unknown",family),family);
 	} else {
-		(void)printf("%s",
+		ND_PRINT("%s",
 			tok2str(bsd_af_values,"Unknown AF %u",family));
 	}
 
-	(void)printf(", length %u: ", length);
+	ND_PRINT(", length %u: ", length);
 }
 
 /*
@@ -78,19 +71,18 @@ null_hdr_print(u_int family, u_int length)
  * '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
@@ -103,8 +95,8 @@ null_if_print(const struct pcap_pkthdr *h, const u_char *p)
 	if ((family & 0xFFFF0000) != 0)
 		family = SWAPLONG(family);
 
-	if (eflag)
-		null_hdr_print(family, length);
+	if (ndo->ndo_eflag)
+		null_hdr_print(ndo, family, length);
 
 	length -= NULL_HDRLEN;
 	caplen -= NULL_HDRLEN;
@@ -112,44 +104,33 @@ null_if_print(const struct pcap_pkthdr *h, const u_char *p)
 
 	switch (family) {
 
-	case BSD_AFNUM_INET:
-		ip_print(gndo, p, length);
+	case BSD_AF_INET:
+		ip_print(ndo, p, length);
 		break;
 
-#ifdef INET6
-	case BSD_AFNUM_INET6_BSD:
-	case BSD_AFNUM_INET6_FREEBSD:
-	case BSD_AFNUM_INET6_DARWIN:
-		ip6_print(gndo, p, length);
+	case BSD_AF_INET6_BSD:
+	case BSD_AF_INET6_FREEBSD:
+	case BSD_AF_INET6_DARWIN:
+		ip6_print(ndo, p, length);
 		break;
-#endif
 
-	case BSD_AFNUM_ISO:
-		isoclns_print(p, length, caplen);
+	case BSD_AF_ISO:
+		isoclns_print(ndo, p, length);
 		break;
 
-	case BSD_AFNUM_APPLETALK:
-		atalk_print(p, length);
+	case BSD_AF_APPLETALK:
+		atalk_print(ndo, p, length);
 		break;
 
-	case BSD_AFNUM_IPX:
-		ipx_print(p, length);
+	case BSD_AF_IPX:
+		ipx_print(ndo, p, length);
 		break;
 
 	default:
 		/* unknown AF_ value */
-		if (!eflag)
-			null_hdr_print(family, length + NULL_HDRLEN);
-		if (!suppress_default_print)
-			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:
- */