Adding upstream version 4.99.4.upstream/4.99.4

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 366 insertions, 0 deletions

diff --git a/print-arcnet.c b/print-arcnet.c
new file mode 100644
index 0000000..5f6aaf9
--- /dev/null
+++ b/print-arcnet.c
@@ -0,0 +1,366 @@
+/*
+ * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 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.
+ *
+ * From: NetBSD: print-arcnet.c,v 1.2 2000/04/24 13:02:28 itojun Exp
+ */
+
+/* \summary: Attached Resource Computer NETwork (ARCNET) printer */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "netdissect-stdinc.h"
+
+#include "netdissect.h"
+#include "extract.h"
+
+/*
+ * from: NetBSD: if_arc.h,v 1.13 1999/11/19 20:41:19 thorpej Exp
+ */
+
+/*
+ * Structure of a 2.5MB/s Arcnet header on the BSDs,
+ * as given to interface code.
+ */
+struct	arc_header {
+	nd_uint8_t  arc_shost;
+	nd_uint8_t  arc_dhost;
+	nd_uint8_t  arc_type;
+	/*
+	 * only present for newstyle encoding with LL fragmentation.
+	 * Don't use sizeof(anything), use ARC_HDR{,NEW}LEN instead.
+	 */
+	nd_uint8_t  arc_flag;
+	nd_uint16_t arc_seqid;
+
+	/*
+	 * only present in exception packets (arc_flag == 0xff)
+	 */
+	nd_uint8_t  arc_type2;	/* same as arc_type */
+	nd_uint8_t  arc_flag2;	/* real flag value */
+	nd_uint16_t arc_seqid2;	/* real seqid value */
+};
+
+#define	ARC_HDRLEN		3
+#define	ARC_HDRNEWLEN		6
+#define	ARC_HDRNEWLEN_EXC	10
+
+/* RFC 1051 */
+#define	ARCTYPE_IP_OLD		240	/* IP protocol */
+#define	ARCTYPE_ARP_OLD		241	/* address resolution protocol */
+
+/* RFC 1201 */
+#define	ARCTYPE_IP		212	/* IP protocol */
+#define	ARCTYPE_ARP		213	/* address resolution protocol */
+#define	ARCTYPE_REVARP		214	/* reverse addr resolution protocol */
+
+#define	ARCTYPE_ATALK		221	/* Appletalk */
+#define	ARCTYPE_BANIAN		247	/* Banyan Vines */
+#define	ARCTYPE_IPX		250	/* Novell IPX */
+
+#define ARCTYPE_INET6		0xc4	/* IPng */
+#define ARCTYPE_DIAGNOSE	0x80	/* as per ANSI/ATA 878.1 */
+
+/*
+ * Structure of a 2.5MB/s Arcnet header on Linux.  Linux has
+ * an extra "offset" field when given to interface code, and
+ * never presents packets that look like exception frames.
+ */
+struct	arc_linux_header {
+	nd_uint8_t  arc_shost;
+	nd_uint8_t  arc_dhost;
+	nd_uint16_t arc_offset;
+	nd_uint8_t  arc_type;
+	/*
+	 * only present for newstyle encoding with LL fragmentation.
+	 * Don't use sizeof(anything), use ARC_LINUX_HDR{,NEW}LEN
+	 * instead.
+	 */
+	nd_uint8_t  arc_flag;
+	nd_uint16_t arc_seqid;
+};
+
+#define	ARC_LINUX_HDRLEN	5
+#define	ARC_LINUX_HDRNEWLEN	8
+
+static int arcnet_encap_print(netdissect_options *, u_char arctype, const u_char *p,
+    u_int length, u_int caplen);
+
+static const struct tok arctypemap[] = {
+	{ ARCTYPE_IP_OLD,	"oldip" },
+	{ ARCTYPE_ARP_OLD,	"oldarp" },
+	{ ARCTYPE_IP,		"ip" },
+	{ ARCTYPE_ARP,		"arp" },
+	{ ARCTYPE_REVARP,	"rarp" },
+	{ ARCTYPE_ATALK,	"atalk" },
+	{ ARCTYPE_BANIAN,	"banyan" },
+	{ ARCTYPE_IPX,		"ipx" },
+	{ ARCTYPE_INET6,	"ipv6" },
+	{ ARCTYPE_DIAGNOSE,	"diag" },
+	{ 0, NULL }
+};
+
+static void
+arcnet_print(netdissect_options *ndo, const u_char *bp, u_int length, int phds,
+             u_int flag, u_int seqid)
+{
+	const struct arc_header *ap;
+	const char *arctypename;
+
+	ndo->ndo_protocol = "arcnet";
+	ap = (const struct arc_header *)bp;
+
+	if (ndo->ndo_qflag) {
+		ND_PRINT("%02x %02x %u: ",
+			     GET_U_1(ap->arc_shost),
+			     GET_U_1(ap->arc_dhost),
+			     length);
+		return;
+	}
+
+	arctypename = tok2str(arctypemap, "%02x", GET_U_1(ap->arc_type));
+
+	if (!phds) {
+		ND_PRINT("%02x %02x %s %u: ",
+			     GET_U_1(ap->arc_shost),
+			     GET_U_1(ap->arc_dhost),
+			     arctypename,
+			     length);
+		return;
+	}
+
+	if (flag == 0) {
+		ND_PRINT("%02x %02x %s seqid %04x %u: ",
+			GET_U_1(ap->arc_shost),
+			GET_U_1(ap->arc_dhost),
+			arctypename, seqid,
+			length);
+		return;
+	}
+
+	if (flag & 1)
+		ND_PRINT("%02x %02x %s seqid %04x "
+			"(first of %u fragments) %u: ",
+			GET_U_1(ap->arc_shost),
+			GET_U_1(ap->arc_dhost),
+			arctypename, seqid,
+			(flag + 3) / 2, length);
+	else
+		ND_PRINT("%02x %02x %s seqid %04x "
+			"(fragment %u) %u: ",
+			GET_U_1(ap->arc_shost),
+			GET_U_1(ap->arc_dhost),
+			arctypename, seqid,
+			flag/2 + 1, length);
+}
+
+/*
+ * This is the top level routine of the printer.  'p' points
+ * to the ARCNET header of the packet, 'h->ts' is the timestamp,
+ * 'h->len' is the length of the packet off the wire, and 'h->caplen'
+ * is the number of bytes actually captured.
+ */
+void
+arcnet_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p)
+{
+	u_int caplen = h->caplen;
+	u_int length = h->len;
+	const struct arc_header *ap;
+
+	int phds;
+	u_int flag = 0, archdrlen = 0;
+	u_int seqid = 0;
+	u_char arc_type;
+
+	ndo->ndo_protocol = "arcnet";
+	if (caplen < ARC_HDRLEN) {
+		ndo->ndo_ll_hdr_len += caplen;
+		nd_trunc_longjmp(ndo);
+	}
+
+	ap = (const struct arc_header *)p;
+	arc_type = GET_U_1(ap->arc_type);
+
+	switch (arc_type) {
+	default:
+		phds = 1;
+		break;
+	case ARCTYPE_IP_OLD:
+	case ARCTYPE_ARP_OLD:
+	case ARCTYPE_DIAGNOSE:
+		phds = 0;
+		archdrlen = ARC_HDRLEN;
+		break;
+	}
+
+	if (phds) {
+		if (caplen < ARC_HDRNEWLEN) {
+			arcnet_print(ndo, p, length, 0, 0, 0);
+			ND_PRINT(" phds");
+			ndo->ndo_ll_hdr_len += caplen;
+			nd_trunc_longjmp(ndo);
+		}
+
+		flag = GET_U_1(ap->arc_flag);
+		if (flag == 0xff) {
+			if (caplen < ARC_HDRNEWLEN_EXC) {
+				arcnet_print(ndo, p, length, 0, 0, 0);
+				ND_PRINT(" phds extended");
+				ndo->ndo_ll_hdr_len += caplen;
+				nd_trunc_longjmp(ndo);
+			}
+			flag = GET_U_1(ap->arc_flag2);
+			seqid = GET_BE_U_2(ap->arc_seqid2);
+			archdrlen = ARC_HDRNEWLEN_EXC;
+		} else {
+			seqid = GET_BE_U_2(ap->arc_seqid);
+			archdrlen = ARC_HDRNEWLEN;
+		}
+	}
+
+
+	if (ndo->ndo_eflag)
+		arcnet_print(ndo, p, length, phds, flag, seqid);
+
+	/*
+	 * Go past the ARCNET header.
+	 */
+	length -= archdrlen;
+	caplen -= archdrlen;
+	p += archdrlen;
+
+	if (phds && flag && (flag & 1) == 0) {
+		/*
+		 * This is a middle fragment.
+		 */
+		ndo->ndo_ll_hdr_len += archdrlen;
+		return;
+	}
+
+	if (!arcnet_encap_print(ndo, arc_type, p, length, caplen))
+		ND_DEFAULTPRINT(p, caplen);
+
+	ndo->ndo_ll_hdr_len += archdrlen;
+}
+
+/*
+ * This is the top level routine of the printer.  'p' points
+ * to the ARCNET header of the packet, 'h->ts' is the timestamp,
+ * 'h->len' is the length of the packet off the wire, and 'h->caplen'
+ * is the number of bytes actually captured.  It is quite similar
+ * to the non-Linux style printer except that Linux doesn't ever
+ * supply packets that look like exception frames, it always supplies
+ * reassembled packets rather than raw frames, and headers have an
+ * extra "offset" field between the src/dest and packet type.
+ */
+void
+arcnet_linux_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p)
+{
+	u_int caplen = h->caplen;
+	u_int length = h->len;
+	const struct arc_linux_header *ap;
+
+	int archdrlen = 0;
+	u_char arc_type;
+
+	ndo->ndo_protocol = "arcnet_linux";
+	if (caplen < ARC_LINUX_HDRLEN) {
+		ndo->ndo_ll_hdr_len += caplen;
+		nd_trunc_longjmp(ndo);
+	}
+
+	ap = (const struct arc_linux_header *)p;
+	arc_type = GET_U_1(ap->arc_type);
+
+	switch (arc_type) {
+	default:
+		archdrlen = ARC_LINUX_HDRNEWLEN;
+		if (caplen < ARC_LINUX_HDRNEWLEN) {
+			ndo->ndo_ll_hdr_len += caplen;
+			nd_trunc_longjmp(ndo);
+		}
+		break;
+	case ARCTYPE_IP_OLD:
+	case ARCTYPE_ARP_OLD:
+	case ARCTYPE_DIAGNOSE:
+		archdrlen = ARC_LINUX_HDRLEN;
+		break;
+	}
+
+	if (ndo->ndo_eflag)
+		arcnet_print(ndo, p, length, 0, 0, 0);
+
+	/*
+	 * Go past the ARCNET header.
+	 */
+	length -= archdrlen;
+	caplen -= archdrlen;
+	p += archdrlen;
+
+	if (!arcnet_encap_print(ndo, arc_type, p, length, caplen))
+		ND_DEFAULTPRINT(p, caplen);
+
+	ndo->ndo_ll_hdr_len += archdrlen;
+}
+
+/*
+ * Prints the packet encapsulated in an ARCnet data field,
+ * given the ARCnet system code.
+ *
+ * Returns non-zero if it can do so, zero if the system code is unknown.
+ */
+
+
+static int
+arcnet_encap_print(netdissect_options *ndo, u_char arctype, const u_char *p,
+    u_int length, u_int caplen)
+{
+	switch (arctype) {
+
+	case ARCTYPE_IP_OLD:
+	case ARCTYPE_IP:
+	        ip_print(ndo, p, length);
+		return (1);
+
+	case ARCTYPE_INET6:
+		ip6_print(ndo, p, length);
+		return (1);
+
+	case ARCTYPE_ARP_OLD:
+	case ARCTYPE_ARP:
+	case ARCTYPE_REVARP:
+		arp_print(ndo, p, length, caplen);
+		return (1);
+
+	case ARCTYPE_ATALK:	/* XXX was this ever used? */
+		if (ndo->ndo_vflag)
+			ND_PRINT("et1 ");
+		atalk_print(ndo, p, length);
+		return (1);
+
+	case ARCTYPE_IPX:
+		ipx_print(ndo, p, length);
+		return (1);
+
+	default:
+		return (0);
+	}
+}