Virgin import of unmodified tcpdump v3.2.1 distribution from LBL.

Obtained from: ftp://ftp.ee.lbl.gov/tcpdump.tar.Z on 19-Aug-1996.

1 files changed, 115 insertions, 0 deletions

diff --git a/contrib/tcpdump/print-null.c b/contrib/tcpdump/print-null.c
new file mode 100644
index 0000000..89e1695
--- /dev/null
+++ b/contrib/tcpdump/print-null.c
@@ -0,0 +1,115 @@
+/*
+ * Copyright (c) 1991, 1993, 1994, 1995, 1996
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that: (1) source code distributions
+ * retain the above copyright notice and this paragraph in its entirety, (2)
+ * distributions including binary code include the above copyright notice and
+ * this paragraph in its entirety in the documentation or other materials
+ * provided with the distribution, and (3) all advertising materials mentioning
+ * features or use of this software display the following acknowledgement:
+ * ``This product includes software developed by the University of California,
+ * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
+ * the University nor the names of its contributors may be used to endorse
+ * or promote products derived from this software without specific prior
+ * written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#ifndef lint
+static char rcsid[] =
+    "@(#)$Header: print-null.c,v 1.19 96/07/14 19:39:02 leres Exp $ (LBL)";
+#endif
+
+#include <sys/param.h>
+#include <sys/time.h>
+#include <sys/socket.h>
+#include <sys/file.h>
+#include <sys/ioctl.h>
+
+#if __STDC__
+struct mbuf;
+struct rtentry;
+#endif
+#include <net/if.h>
+
+#include <netinet/in.h>
+#include <netinet/in_systm.h>
+#include <netinet/ip.h>
+#include <netinet/if_ether.h>
+#include <netinet/ip_var.h>
+#include <netinet/udp.h>
+#include <netinet/udp_var.h>
+#include <netinet/tcp.h>
+#include <netinet/tcpip.h>
+
+#include <stdio.h>
+#include <string.h>
+
+#include "interface.h"
+#include "addrtoname.h"
+#include "pcap.h"
+
+#define	NULL_HDRLEN 4
+
+static void
+null_print(const u_char *p, const struct ip *ip, u_int length)
+{
+	u_int family;
+
+	memcpy((char *)&family, (char *)p, sizeof(family));
+
+	if (nflag) {
+		/* XXX just dump the header */
+		return;
+	}
+	switch (family) {
+
+	case AF_INET:
+		printf("ip: ");
+		break;
+
+	case AF_NS:
+		printf("ns: ");
+		break;
+
+	default:
+		printf("AF %d: ", family);
+		break;
+	}
+}
+
+void
+null_if_print(u_char *user, const struct pcap_pkthdr *h, const u_char *p)
+{
+	u_int length = h->len;
+	u_int caplen = h->caplen;
+	const struct ip *ip;
+
+	ts_print(&h->ts);
+
+	/*
+	 * 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;
+
+	length -= NULL_HDRLEN;
+
+	ip = (struct ip *)(p + NULL_HDRLEN);
+
+	if (eflag)
+		null_print(p, ip, length);
+
+	ip_print((const u_char *)ip, length);
+
+	if (xflag)
+		default_print((const u_char *)ip, caplen - NULL_HDRLEN);
+	putchar('\n');
+}
+