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, 195 insertions, 0 deletions

diff --git a/contrib/tcpdump/print-llc.c b/contrib/tcpdump/print-llc.c
new file mode 100644
index 0000000..e8e3f52
--- /dev/null
+++ b/contrib/tcpdump/print-llc.c
@@ -0,0 +1,195 @@
+/*
+ * Copyright (c) 1992, 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.
+ */
+
+/*
+ * Code by Matt Thomas, Digital Equipment Corporation
+ *	with an awful lot of hacking by Jeffrey Mogul, DECWRL
+ */
+
+#ifndef lint
+static  char rcsid[] =
+	"@(#)$Header: print-llc.c,v 1.20 96/07/23 14:17:25 leres Exp $";
+#endif
+
+#include <sys/param.h>
+#include <sys/time.h>
+
+#include <netinet/in.h>
+
+#include <ctype.h>
+#include <netdb.h>
+#include <signal.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "interface.h"
+#include "addrtoname.h"
+#include "extract.h"			/* must come after interface.h */
+
+#include "llc.h"
+
+static struct tok cmd2str[] = {
+	{ LLC_UI,	"ui" },
+	{ LLC_TEST,	"test" },
+	{ LLC_XID,	"xid" },
+	{ LLC_UA,	"ua" },
+	{ LLC_DISC,	"disc" },
+	{ LLC_DM,	"dm" },
+	{ LLC_SABME,	"sabme" },
+	{ LLC_FRMR,	"frmr" },
+	{ 0,		NULL }
+};
+
+/*
+ * Returns non-zero IFF it succeeds in printing the header
+ */
+int
+llc_print(const u_char *p, u_int length, u_int caplen,
+	  const u_char *esrc, const u_char *edst)
+{
+	struct llc llc;
+	register u_short et;
+	register int ret;
+
+	if (caplen < 3) {
+		(void)printf("[|llc]");
+		default_print((u_char *)p, caplen);
+		return(0);
+	}
+
+	/* Watch out for possible alignment problems */
+	memcpy((char *)&llc, (char *)p, min(caplen, sizeof(llc)));
+
+	if (llc.ssap == LLCSAP_GLOBAL && llc.dsap == LLCSAP_GLOBAL) {
+		ipx_print(p, length);
+		return (1);
+	}
+#ifdef notyet
+	else if (p[0] == 0xf0 && p[1] == 0xf0)
+		netbios_print(p, length);
+#endif
+	if (llc.ssap == LLCSAP_ISONS && llc.dsap == LLCSAP_ISONS
+	    && llc.llcui == LLC_UI) {
+		isoclns_print(p + 3, length - 3, caplen - 3, esrc, edst);
+		return (1);
+	}
+
+	if (llc.ssap == LLCSAP_SNAP && llc.dsap == LLCSAP_SNAP
+	    && llc.llcui == LLC_UI) {
+		if (caplen < sizeof(llc)) {
+		    (void)printf("[|llc-snap]");
+		    default_print((u_char *)p, caplen);
+		    return (0);
+		}
+		if (vflag)
+			(void)printf("snap %s ", protoid_string(llc.llcpi));
+
+		caplen -= sizeof(llc);
+		length -= sizeof(llc);
+		p += sizeof(llc);
+
+		/* This is an encapsulated Ethernet packet */
+		et = EXTRACT_16BITS(&llc.ethertype[0]);
+		ret = ether_encap_print(et, p, length, caplen);
+		if (ret)
+			return (ret);
+	}
+
+	if ((llc.ssap & ~LLC_GSAP) == llc.dsap) {
+		if (eflag)
+			(void)printf("%s ", llcsap_string(llc.dsap));
+		else
+			(void)printf("%s > %s %s ",
+					etheraddr_string(esrc),
+					etheraddr_string(edst),
+					llcsap_string(llc.dsap));
+	} else {
+		if (eflag)
+			(void)printf("%s > %s ",
+				llcsap_string(llc.ssap & ~LLC_GSAP),
+				llcsap_string(llc.dsap));
+		else
+			(void)printf("%s %s > %s %s ",
+				etheraddr_string(esrc),
+				llcsap_string(llc.ssap & ~LLC_GSAP),
+				etheraddr_string(edst),
+				llcsap_string(llc.dsap));
+	}
+
+	if ((llc.llcu & LLC_U_FMT) == LLC_U_FMT) {
+		const char *m;
+		char f;
+		m = tok2str(cmd2str, "%02x", LLC_U_CMD(llc.llcu));
+		switch ((llc.ssap & LLC_GSAP) | (llc.llcu & LLC_U_POLL)) {
+		    case 0:			f = 'C'; break;
+		    case LLC_GSAP:		f = 'R'; break;
+		    case LLC_U_POLL:		f = 'P'; break;
+		    case LLC_GSAP|LLC_U_POLL:	f = 'F'; break;
+		    default:			f = '?'; break;
+		}
+
+		printf("%s/%c", m, f);
+
+		p += 3;
+		length -= 3;
+		caplen -= 3;
+
+		if ((llc.llcu & ~LLC_U_POLL) == LLC_XID) {
+		    if (*p == LLC_XID_FI) {
+			printf(": %02x %02x", p[1], p[2]);
+			p += 3;
+			length -= 3;
+			caplen -= 3;
+		    }
+		}
+	} else {
+		char f;
+		llc.llcis = ntohs(llc.llcis);
+		switch ((llc.ssap & LLC_GSAP) | (llc.llcu & LLC_U_POLL)) {
+		    case 0:			f = 'C'; break;
+		    case LLC_GSAP:		f = 'R'; break;
+		    case LLC_U_POLL:		f = 'P'; break;
+		    case LLC_GSAP|LLC_U_POLL:	f = 'F'; break;
+		    default:			f = '?'; break;
+		}
+
+		if ((llc.llcu & LLC_S_FMT) == LLC_S_FMT) {
+			static char *llc_s[] = { "rr", "rej", "rnr", "03" };
+			(void)printf("%s (r=%d,%c)",
+				llc_s[LLC_S_CMD(llc.llcis)],
+				LLC_IS_NR(llc.llcis),
+				f);
+		} else {
+			(void)printf("I (s=%d,r=%d,%c)",
+				LLC_I_NS(llc.llcis),
+				LLC_IS_NR(llc.llcis),
+				f);
+		}
+		p += 4;
+		length -= 4;
+		caplen -= 4;
+	}
+	(void)printf(" len=%d", length);
+	if (caplen > 0) {
+		default_print_unaligned(p, caplen);
+	}
+	return(1);
+}