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- /*
- * Copyright (c) 1991, 1993, 1994
- * 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 1.14 94/06/10 17:01:35 mccanne Exp $ (LBL)";
- #endif
-
- #include <sys/param.h>
- #include <sys/time.h>
- #include <sys/socket.h>
- #include <sys/file.h>
- #include <sys/ioctl.h>
-
- #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 "interface.h"
- #include "addrtoname.h"
- #include "pcap.h"
-
- #define NULL_HDRLEN 4
-
- static void
- null_print(const u_char *p, const struct ip *ip, int length)
- {
- u_int family;
-
- bcopy(p, &family, 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)
- {
- int length = h->len;
- 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');
- }
-
-