*
* From: NetBSD: print-arcnet.c,v 1.2 2000/04/24 13:02:28 itojun Exp
*/
-#ifndef lint
-static const char rcsid[] _U_ =
- "@(#) $Header: /tcpdump/master/tcpdump/print-arcnet.c,v 1.19 2004-04-30 16:42:14 mcr Exp $ (LBL)";
-#endif
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
+/* \summary: Attached Resource Computer NETwork (ARCNET) printer */
-#include <tcpdump-stdinc.h>
+#include <config.h>
-#include <stdio.h>
-#include <pcap.h>
+#include "netdissect-stdinc.h"
-#include "interface.h"
-#include "arcnet.h"
+#include "netdissect.h"
+#include "extract.h"
-static int arcnet_encap_print(u_char arctype, const u_char *p,
+/*
+ * 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);
-struct tok arctypemap[] = {
+static const struct tok arctypemap[] = {
{ ARCTYPE_IP_OLD, "oldip" },
{ ARCTYPE_ARP_OLD, "oldarp" },
{ ARCTYPE_IP, "ip" },
{ ARCTYPE_IPX, "ipx" },
{ ARCTYPE_INET6, "ipv6" },
{ ARCTYPE_DIAGNOSE, "diag" },
- { 0, 0 }
+ { 0, NULL }
};
-static inline void
-arcnet_print(const u_char *bp, u_int length, int phds, int flag, u_int seqid)
+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 (qflag) {
- (void)printf("%02x %02x %d: ",
- ap->arc_shost,
- ap->arc_dhost,
+ 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", ap->arc_type);
+ arctypename = tok2str(arctypemap, "%02x", GET_U_1(ap->arc_type));
if (!phds) {
- (void)printf("%02x %02x %s %d: ",
- ap->arc_shost, ap->arc_dhost, arctypename,
+ ND_PRINT("%02x %02x %s %u: ",
+ GET_U_1(ap->arc_shost),
+ GET_U_1(ap->arc_dhost),
+ arctypename,
length);
- return;
+ return;
}
if (flag == 0) {
- (void)printf("%02x %02x %s seqid %04x %d: ",
- ap->arc_shost, ap->arc_dhost, arctypename, seqid,
+ ND_PRINT("%02x %02x %s seqid %04x %u: ",
+ GET_U_1(ap->arc_shost),
+ GET_U_1(ap->arc_dhost),
+ arctypename, seqid,
length);
- return;
+ return;
}
if (flag & 1)
- (void)printf("%02x %02x %s seqid %04x "
- "(first of %d fragments) %d: ",
- ap->arc_shost, ap->arc_dhost, arctypename, seqid,
+ 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
- (void)printf("%02x %02x %s seqid %04x "
- "(fragment %d) %d: ",
- ap->arc_shost, ap->arc_dhost, arctypename, seqid,
+ 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);
}
* 'h->len' is the length of the packet off the wire, and 'h->caplen'
* is the number of bytes actually captured.
*/
-u_int
-arcnet_if_print(const struct pcap_pkthdr *h, const u_char *p)
+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, flag = 0, archdrlen = 0;
+ int phds;
+ u_int flag = 0, archdrlen = 0;
u_int seqid = 0;
u_char arc_type;
+ ndo->ndo_protocol = "arcnet";
if (caplen < ARC_HDRLEN) {
- printf("[|arcnet]");
- return (caplen);
+ ndo->ndo_ll_hdr_len += caplen;
+ nd_trunc_longjmp(ndo);
}
ap = (const struct arc_header *)p;
- arc_type = ap->arc_type;
+ arc_type = GET_U_1(ap->arc_type);
switch (arc_type) {
default:
if (phds) {
if (caplen < ARC_HDRNEWLEN) {
- arcnet_print(p, length, 0, 0, 0);
- printf("[|phds]");
- return (caplen);
+ arcnet_print(ndo, p, length, 0, 0, 0);
+ ND_PRINT(" phds");
+ ndo->ndo_ll_hdr_len += caplen;
+ nd_trunc_longjmp(ndo);
}
- if (ap->arc_flag == 0xff) {
+ flag = GET_U_1(ap->arc_flag);
+ if (flag == 0xff) {
if (caplen < ARC_HDRNEWLEN_EXC) {
- arcnet_print(p, length, 0, 0, 0);
- printf("[|phds extended]");
- return (caplen);
+ arcnet_print(ndo, p, length, 0, 0, 0);
+ ND_PRINT(" phds extended");
+ ndo->ndo_ll_hdr_len += caplen;
+ nd_trunc_longjmp(ndo);
}
- flag = ap->arc_flag2;
- seqid = ntohs(ap->arc_seqid2);
+ flag = GET_U_1(ap->arc_flag2);
+ seqid = GET_BE_U_2(ap->arc_seqid2);
archdrlen = ARC_HDRNEWLEN_EXC;
} else {
- flag = ap->arc_flag;
- seqid = ntohs(ap->arc_seqid);
+ seqid = GET_BE_U_2(ap->arc_seqid);
archdrlen = ARC_HDRNEWLEN;
}
}
- if (eflag)
- arcnet_print(p, length, phds, flag, seqid);
+ if (ndo->ndo_eflag)
+ arcnet_print(ndo, p, length, phds, flag, seqid);
/*
* Go past the ARCNET header.
/*
* This is a middle fragment.
*/
- return (archdrlen);
+ ndo->ndo_ll_hdr_len += archdrlen;
+ return;
}
- if (!arcnet_encap_print(arc_type, p, length, caplen))
- default_print(p, caplen);
+ if (!arcnet_encap_print(ndo, arc_type, p, length, caplen))
+ ND_DEFAULTPRINT(p, caplen);
- return (archdrlen);
+ ndo->ndo_ll_hdr_len += archdrlen;
}
/*
* reassembled packets rather than raw frames, and headers have an
* extra "offset" field between the src/dest and packet type.
*/
-u_int
-arcnet_linux_if_print(const struct pcap_pkthdr *h, const u_char *p)
+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;
int archdrlen = 0;
u_char arc_type;
+ ndo->ndo_protocol = "arcnet_linux";
if (caplen < ARC_LINUX_HDRLEN) {
- printf("[|arcnet]");
- return (caplen);
+ ndo->ndo_ll_hdr_len += caplen;
+ nd_trunc_longjmp(ndo);
}
ap = (const struct arc_linux_header *)p;
- arc_type = ap->arc_type;
+ arc_type = GET_U_1(ap->arc_type);
switch (arc_type) {
default:
archdrlen = ARC_LINUX_HDRNEWLEN;
if (caplen < ARC_LINUX_HDRNEWLEN) {
- printf("[|arcnet]");
- return (caplen);
+ ndo->ndo_ll_hdr_len += caplen;
+ nd_trunc_longjmp(ndo);
}
break;
case ARCTYPE_IP_OLD:
break;
}
- if (eflag)
- arcnet_print(p, length, 0, 0, 0);
+ if (ndo->ndo_eflag)
+ arcnet_print(ndo, p, length, 0, 0, 0);
/*
* Go past the ARCNET header.
caplen -= archdrlen;
p += archdrlen;
- if (!arcnet_encap_print(arc_type, p, length, caplen))
- default_print(p, caplen);
+ if (!arcnet_encap_print(ndo, arc_type, p, length, caplen))
+ ND_DEFAULTPRINT(p, caplen);
- return (archdrlen);
+ ndo->ndo_ll_hdr_len += archdrlen;
}
/*
static int
-arcnet_encap_print(u_char arctype, const u_char *p,
+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(p, length);
+ ip_print(ndo, p, length);
return (1);
-#ifdef INET6
case ARCTYPE_INET6:
- ip6_print(p, length);
+ ip6_print(ndo, p, length);
return (1);
-#endif /*INET6*/
case ARCTYPE_ARP_OLD:
case ARCTYPE_ARP:
case ARCTYPE_REVARP:
- arp_print(gndo, p, length, caplen);
+ arp_print(ndo, p, length, caplen);
return (1);
case ARCTYPE_ATALK: /* XXX was this ever used? */
- if (vflag)
- fputs("et1 ", stdout);
- atalk_print(p, length);
+ if (ndo->ndo_vflag)
+ ND_PRINT("et1 ");
+ atalk_print(ndo, p, length);
return (1);
case ARCTYPE_IPX:
- ipx_print(p, length);
+ ipx_print(ndo, p, length);
return (1);
default:
return (0);
}
}
-
-/*
- * Local Variables:
- * c-style: bsd
- * End:
- */
-
projects / tcpdump / blobdiff