diff options
Diffstat (limited to 'contrib/tcpdump/print-arcnet.c')
| -rw-r--r-- | contrib/tcpdump/print-arcnet.c | 248 |
1 files changed, 248 insertions, 0 deletions
diff --git a/contrib/tcpdump/print-arcnet.c b/contrib/tcpdump/print-arcnet.c new file mode 100644 index 0000000..3b6ea90 --- /dev/null +++ b/contrib/tcpdump/print-arcnet.c @@ -0,0 +1,248 @@ +/* + * 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 + */ +#ifndef lint +static const char rcsid[] = + "@(#) $Header: /tcpdump/master/tcpdump/print-arcnet.c,v 1.6 2001/09/17 21:57:54 fenner Exp $ (LBL)"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <sys/param.h> +#include <sys/time.h> +#include <sys/socket.h> + +struct mbuf; +struct rtentry; + +#include <netinet/in.h> + +#include <stdio.h> +#include <pcap.h> + +#include "interface.h" +#include "arcnet.h" + +int arcnet_encap_print(u_char arctype, const u_char *p, + u_int length, u_int caplen); + +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, 0 } +}; + +static inline void +arcnet_print(const u_char *bp, u_int length, int phds, int flag, u_int seqid) +{ + const struct arc_header *ap; + const char *arctypename; + + + ap = (const struct arc_header *)bp; + + + if (qflag) { + (void)printf("%02x %02x %d: ", + ap->arc_shost, + ap->arc_dhost, + length); + return; + } + + arctypename = tok2str(arctypemap, "%02x", ap->arc_type); + + if (!phds) { + (void)printf("%02x %02x %s %d: ", + ap->arc_shost, ap->arc_dhost, arctypename, + length); + return; + } + + if (flag == 0) { + (void)printf("%02x %02x %s seqid %04x %d: ", + ap->arc_shost, ap->arc_dhost, arctypename, seqid, + length); + return; + } + + if (flag & 1) + (void)printf("%02x %02x %s seqid %04x " + "(first of %d fragments) %d: ", + ap->arc_shost, 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, + flag/2 + 1, length); +} + +/* + * This is the top level routine of the printer. 'p' is the points + * to the ether header of the packet, 'tvp' is the timestamp, + * 'length' is the length of the packet off the wire, and 'caplen' + * is the number of bytes actually captured. + */ +void +arcnet_if_print(u_char *user, 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; + u_int seqid = 0; + u_char arc_type; + + ++infodelay; + ts_print(&h->ts); + + if (caplen < ARC_HDRLEN) { + printf("[|arcnet]"); + goto out; + } + + ap = (const struct arc_header *)p; + arc_type = 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(p, length, 0, 0, 0); + printf("[|phds]"); + goto out; + } + + if (ap->arc_flag == 0xff) { + if (caplen < ARC_HDRNEWLEN_EXC) { + arcnet_print(p, length, 0, 0, 0); + printf("[|phds extended]"); + goto out; + } + flag = ap->arc_flag2; + seqid = ap->arc_seqid2; + archdrlen = ARC_HDRNEWLEN_EXC; + } else { + flag = ap->arc_flag; + seqid = ap->arc_seqid; + archdrlen = ARC_HDRNEWLEN; + } + } + + + if (eflag) + arcnet_print(p, length, phds, flag, seqid); + + /* + * Some printers want to get back at the ethernet 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 -= archdrlen; + caplen -= archdrlen; + p += archdrlen; + + if (phds && flag && (flag & 1) == 0) + goto out2; + + if (!arcnet_encap_print(arc_type, p, length, caplen)) { + default_print(p, caplen); + goto out; + } + + out2: + if (xflag) + default_print(p, caplen); + + out: + putchar('\n'); + --infodelay; + if (infoprint) + info(0); +} + +/* + * 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. + */ + + +int +arcnet_encap_print(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); + return (1); + +#ifdef INET6 + case ARCTYPE_INET6: + ip6_print(p, length); + return (1); +#endif /*INET6*/ + + case ARCTYPE_ARP_OLD: + case ARCTYPE_ARP: + case ARCTYPE_REVARP: + arp_print(p, length, caplen); + return (1); + + case ARCTYPE_ATALK: /* XXX was this ever used? */ + if (vflag) + fputs("et1 ", stdout); + atalk_print(p, length); + return (1); + + default: + return (0); + } +} |
