Initial revision

1 files changed, 139 insertions, 0 deletions

diff --git a/print-igrp.c b/print-igrp.c
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--- /dev/null
+++ b/print-igrp.c
@@ -0,0 +1,139 @@
+/*
+ * Copyright (c) 1996, 1997
+ *	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.
+ *
+ * Initial contribution from Francis Dupont (francis.dupont@inria.fr)
+ */
+
+#ifndef lint
+static const char rcsid[] =
+    "@(#) $Header: /tcpdump/master/tcpdump/print-igrp.c,v 1.8 1999-10-07 23:47:11 mcr Exp $ (LBL)";
+#endif
+
+#include <sys/param.h>
+#include <sys/types.h>			/* concession to AIX */
+#include <sys/socket.h>
+
+#include <netinet/in.h>
+#include <netinet/in_systm.h>
+#include <netinet/ip.h>
+#include <netinet/ip_var.h>
+#include <netinet/udp.h>
+#include <netinet/udp_var.h>
+
+#include <errno.h>
+#include <stdio.h>
+
+#include "interface.h"
+#include "addrtoname.h"
+#include "igrp.h"
+#include "extract.h"			/* must come after interface.h */
+
+static void
+igrp_entry_print(register struct igrprte *igr, register int is_interior,
+    register int is_exterior)
+{
+	register u_int delay, bandwidth;
+	u_int metric, mtu;
+
+	if (is_interior)
+		printf(" *.%d.%d.%d", igr->igr_net[0],
+		    igr->igr_net[1], igr->igr_net[2]);
+	else if (is_exterior)
+		printf(" X%d.%d.%d.0", igr->igr_net[0],
+		    igr->igr_net[1], igr->igr_net[2]);
+	else
+		printf(" %d.%d.%d.0", igr->igr_net[0],
+		    igr->igr_net[1], igr->igr_net[2]);
+
+	delay = EXTRACT_24BITS(igr->igr_dly);
+	bandwidth = EXTRACT_24BITS(igr->igr_bw);
+	metric = bandwidth + delay;
+	if (metric > 0xffffff)
+		metric = 0xffffff;
+	mtu = EXTRACT_16BITS(igr->igr_mtu);
+
+	printf(" d=%d b=%d r=%d l=%d M=%d mtu=%d in %d hops",
+	    10 * delay, bandwidth == 0 ? 0 : 10000000 / bandwidth,
+	    igr->igr_rel, igr->igr_ld, metric,
+	    mtu, igr->igr_hct);
+}
+
+static struct tok op2str[] = {
+	{ IGRP_UPDATE,		"update" },
+	{ IGRP_REQUEST,		"request" },
+	{ 0,			NULL }
+};
+
+void
+igrp_print(register const u_char *bp, u_int length, register const u_char *bp2)
+{
+	register struct igrphdr *hdr;
+	register struct ip *ip;
+	register u_char *cp;
+	u_int nint, nsys, next;
+
+	hdr = (struct igrphdr *)bp;
+	ip = (struct ip *)bp2;
+	cp = (u_char *)(hdr + 1);
+        (void)printf("%s > %s: igrp: ",
+	    ipaddr_string(&ip->ip_src),
+	    ipaddr_string(&ip->ip_dst));
+
+	/* Header */
+	TCHECK(*hdr);
+	nint = EXTRACT_16BITS(&hdr->ig_ni);
+	nsys = EXTRACT_16BITS(&hdr->ig_ns);
+	next = EXTRACT_16BITS(&hdr->ig_nx);
+
+	(void)printf(" %s V%d edit=%d AS=%d (%d/%d/%d)",
+	    tok2str(op2str, "op-#%d", hdr->ig_op),
+	    hdr->ig_v,
+	    hdr->ig_ed,
+	    EXTRACT_16BITS(&hdr->ig_as),
+	    nint,
+	    nsys,
+	    next);
+
+	length -= sizeof(*hdr);
+	while (length >= IGRP_RTE_SIZE) {
+		if (nint > 0) {
+			TCHECK2(*cp, IGRP_RTE_SIZE);
+			igrp_entry_print((struct igrprte *)cp, 1, 0);
+			--nint;
+		} else if (nsys > 0) {
+			TCHECK2(*cp, IGRP_RTE_SIZE);
+			igrp_entry_print((struct igrprte *)cp, 0, 0);
+			--nsys;
+		} else if (next > 0) {
+			TCHECK2(*cp, IGRP_RTE_SIZE);
+			igrp_entry_print((struct igrprte *)cp, 0, 1);
+			--next;
+		} else {
+			(void)printf("[extra bytes %d]", length);
+			break;
+		}
+		cp += IGRP_RTE_SIZE;
+		length -= IGRP_RTE_SIZE;
+	}
+	if (nint == 0 && nsys == 0 && next == 0)
+		return;
+trunc:
+	fputs("[|igrp]", stdout);
+}