summaryrefslogtreecommitdiff
path: root/print-atalk.c
diff options
context:
space:
mode:
Diffstat (limited to 'print-atalk.c')
-rw-r--r--print-atalk.c623
1 files changed, 623 insertions, 0 deletions
diff --git a/print-atalk.c b/print-atalk.c
new file mode 100644
index 0000000..0a08ef9
--- /dev/null
+++ b/print-atalk.c
@@ -0,0 +1,623 @@
+/*
+ * 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.
+ *
+ * Format and print AppleTalk packets.
+ */
+
+#ifndef lint
+static const char rcsid[] _U_ =
+ "@(#) $Header: /tcpdump/master/tcpdump/print-atalk.c,v 1.81 2004-05-01 09:41:50 hannes Exp $ (LBL)";
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <tcpdump-stdinc.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <pcap.h>
+
+#include "interface.h"
+#include "addrtoname.h"
+#include "ethertype.h"
+#include "extract.h" /* must come after interface.h */
+#include "appletalk.h"
+
+static struct tok type2str[] = {
+ { ddpRTMP, "rtmp" },
+ { ddpRTMPrequest, "rtmpReq" },
+ { ddpECHO, "echo" },
+ { ddpIP, "IP" },
+ { ddpARP, "ARP" },
+ { ddpKLAP, "KLAP" },
+ { 0, NULL }
+};
+
+struct aarp {
+ u_int16_t htype, ptype;
+ u_int8_t halen, palen;
+ u_int16_t op;
+ u_int8_t hsaddr[6];
+ u_int8_t psaddr[4];
+ u_int8_t hdaddr[6];
+ u_int8_t pdaddr[4];
+};
+
+static char tstr[] = "[|atalk]";
+
+static void atp_print(const struct atATP *, u_int);
+static void atp_bitmap_print(u_char);
+static void nbp_print(const struct atNBP *, u_int, u_short, u_char, u_char);
+static const char *print_cstring(const char *, const u_char *);
+static const struct atNBPtuple *nbp_tuple_print(const struct atNBPtuple *,
+ const u_char *,
+ u_short, u_char, u_char);
+static const struct atNBPtuple *nbp_name_print(const struct atNBPtuple *,
+ const u_char *);
+static const char *ataddr_string(u_short, u_char);
+static void ddp_print(const u_char *, u_int, int, u_short, u_char, u_char);
+static const char *ddpskt_string(int);
+
+/*
+ * Print LLAP packets received on a physical LocalTalk interface.
+ */
+u_int
+ltalk_if_print(const struct pcap_pkthdr *h, const u_char *p)
+{
+ return (llap_print(p, h->caplen));
+}
+
+/*
+ * Print AppleTalk LLAP packets.
+ */
+u_int
+llap_print(register const u_char *bp, u_int length)
+{
+ register const struct LAP *lp;
+ register const struct atDDP *dp;
+ register const struct atShortDDP *sdp;
+ u_short snet;
+ u_int hdrlen;
+
+ if (length < sizeof(*lp)) {
+ (void)printf(" [|llap %u]", length);
+ return (length);
+ }
+ lp = (const struct LAP *)bp;
+ bp += sizeof(*lp);
+ length -= sizeof(*lp);
+ hdrlen = sizeof(*lp);
+ switch (lp->type) {
+
+ case lapShortDDP:
+ if (length < ddpSSize) {
+ (void)printf(" [|sddp %u]", length);
+ return (length);
+ }
+ sdp = (const struct atShortDDP *)bp;
+ printf("%s.%s",
+ ataddr_string(0, lp->src), ddpskt_string(sdp->srcSkt));
+ printf(" > %s.%s:",
+ ataddr_string(0, lp->dst), ddpskt_string(sdp->dstSkt));
+ bp += ddpSSize;
+ length -= ddpSSize;
+ hdrlen += ddpSSize;
+ ddp_print(bp, length, sdp->type, 0, lp->src, sdp->srcSkt);
+ break;
+
+ case lapDDP:
+ if (length < ddpSize) {
+ (void)printf(" [|ddp %u]", length);
+ return (length);
+ }
+ dp = (const struct atDDP *)bp;
+ snet = EXTRACT_16BITS(&dp->srcNet);
+ printf("%s.%s", ataddr_string(snet, dp->srcNode),
+ ddpskt_string(dp->srcSkt));
+ printf(" > %s.%s:",
+ ataddr_string(EXTRACT_16BITS(&dp->dstNet), dp->dstNode),
+ ddpskt_string(dp->dstSkt));
+ bp += ddpSize;
+ length -= ddpSize;
+ hdrlen += ddpSize;
+ ddp_print(bp, length, dp->type, snet, dp->srcNode, dp->srcSkt);
+ break;
+
+#ifdef notdef
+ case lapKLAP:
+ klap_print(bp, length);
+ break;
+#endif
+
+ default:
+ printf("%d > %d at-lap#%d %u",
+ lp->src, lp->dst, lp->type, length);
+ break;
+ }
+ return (hdrlen);
+}
+
+/*
+ * Print EtherTalk/TokenTalk packets (or FDDITalk, or whatever it's called
+ * when it runs over FDDI; yes, I've seen FDDI captures with AppleTalk
+ * packets in them).
+ */
+void
+atalk_print(register const u_char *bp, u_int length)
+{
+ register const struct atDDP *dp;
+ u_short snet;
+
+ if(!eflag)
+ printf("AT ");
+
+ if (length < ddpSize) {
+ (void)printf(" [|ddp %u]", length);
+ return;
+ }
+ dp = (const struct atDDP *)bp;
+ snet = EXTRACT_16BITS(&dp->srcNet);
+ printf("%s.%s", ataddr_string(snet, dp->srcNode),
+ ddpskt_string(dp->srcSkt));
+ printf(" > %s.%s: ",
+ ataddr_string(EXTRACT_16BITS(&dp->dstNet), dp->dstNode),
+ ddpskt_string(dp->dstSkt));
+ bp += ddpSize;
+ length -= ddpSize;
+ ddp_print(bp, length, dp->type, snet, dp->srcNode, dp->srcSkt);
+}
+
+/* XXX should probably pass in the snap header and do checks like arp_print() */
+void
+aarp_print(register const u_char *bp, u_int length)
+{
+ register const struct aarp *ap;
+
+#define AT(member) ataddr_string((ap->member[1]<<8)|ap->member[2],ap->member[3])
+
+ printf("aarp ");
+ ap = (const struct aarp *)bp;
+ if (EXTRACT_16BITS(&ap->htype) == 1 &&
+ EXTRACT_16BITS(&ap->ptype) == ETHERTYPE_ATALK &&
+ ap->halen == 6 && ap->palen == 4 )
+ switch (EXTRACT_16BITS(&ap->op)) {
+
+ case 1: /* request */
+ (void)printf("who-has %s tell %s",
+ AT(pdaddr), AT(psaddr));
+ return;
+
+ case 2: /* response */
+ (void)printf("reply %s is-at %s",
+ AT(psaddr), etheraddr_string(ap->hsaddr));
+ return;
+
+ case 3: /* probe (oy!) */
+ (void)printf("probe %s tell %s",
+ AT(pdaddr), AT(psaddr));
+ return;
+ }
+ (void)printf("len %u op %u htype %u ptype %#x halen %u palen %u",
+ length, EXTRACT_16BITS(&ap->op), EXTRACT_16BITS(&ap->htype),
+ EXTRACT_16BITS(&ap->ptype), ap->halen, ap->palen);
+}
+
+/*
+ * Print AppleTalk Datagram Delivery Protocol packets.
+ */
+static void
+ddp_print(register const u_char *bp, register u_int length, register int t,
+ register u_short snet, register u_char snode, u_char skt)
+{
+
+ switch (t) {
+
+ case ddpNBP:
+ nbp_print((const struct atNBP *)bp, length, snet, snode, skt);
+ break;
+
+ case ddpATP:
+ atp_print((const struct atATP *)bp, length);
+ break;
+
+ case ddpEIGRP:
+ eigrp_print(bp, length);
+ break;
+
+ default:
+ (void)printf(" at-%s %d", tok2str(type2str, NULL, t), length);
+ break;
+ }
+}
+
+static void
+atp_print(register const struct atATP *ap, u_int length)
+{
+ char c;
+ u_int32_t data;
+
+ if ((const u_char *)(ap + 1) > snapend) {
+ /* Just bail if we don't have the whole chunk. */
+ fputs(tstr, stdout);
+ return;
+ }
+ if (length < sizeof(*ap)) {
+ (void)printf(" [|atp %u]", length);
+ return;
+ }
+ length -= sizeof(*ap);
+ switch (ap->control & 0xc0) {
+
+ case atpReqCode:
+ (void)printf(" atp-req%s %d",
+ ap->control & atpXO? " " : "*",
+ EXTRACT_16BITS(&ap->transID));
+
+ atp_bitmap_print(ap->bitmap);
+
+ if (length != 0)
+ (void)printf(" [len=%u]", length);
+
+ switch (ap->control & (atpEOM|atpSTS)) {
+ case atpEOM:
+ (void)printf(" [EOM]");
+ break;
+ case atpSTS:
+ (void)printf(" [STS]");
+ break;
+ case atpEOM|atpSTS:
+ (void)printf(" [EOM,STS]");
+ break;
+ }
+ break;
+
+ case atpRspCode:
+ (void)printf(" atp-resp%s%d:%d (%u)",
+ ap->control & atpEOM? "*" : " ",
+ EXTRACT_16BITS(&ap->transID), ap->bitmap, length);
+ switch (ap->control & (atpXO|atpSTS)) {
+ case atpXO:
+ (void)printf(" [XO]");
+ break;
+ case atpSTS:
+ (void)printf(" [STS]");
+ break;
+ case atpXO|atpSTS:
+ (void)printf(" [XO,STS]");
+ break;
+ }
+ break;
+
+ case atpRelCode:
+ (void)printf(" atp-rel %d", EXTRACT_16BITS(&ap->transID));
+
+ atp_bitmap_print(ap->bitmap);
+
+ /* length should be zero */
+ if (length)
+ (void)printf(" [len=%u]", length);
+
+ /* there shouldn't be any control flags */
+ if (ap->control & (atpXO|atpEOM|atpSTS)) {
+ c = '[';
+ if (ap->control & atpXO) {
+ (void)printf("%cXO", c);
+ c = ',';
+ }
+ if (ap->control & atpEOM) {
+ (void)printf("%cEOM", c);
+ c = ',';
+ }
+ if (ap->control & atpSTS) {
+ (void)printf("%cSTS", c);
+ c = ',';
+ }
+ (void)printf("]");
+ }
+ break;
+
+ default:
+ (void)printf(" atp-0x%x %d (%u)", ap->control,
+ EXTRACT_16BITS(&ap->transID), length);
+ break;
+ }
+ data = EXTRACT_32BITS(&ap->userData);
+ if (data != 0)
+ (void)printf(" 0x%x", data);
+}
+
+static void
+atp_bitmap_print(register u_char bm)
+{
+ register char c;
+ register int i;
+
+ /*
+ * The '& 0xff' below is needed for compilers that want to sign
+ * extend a u_char, which is the case with the Ultrix compiler.
+ * (gcc is smart enough to eliminate it, at least on the Sparc).
+ */
+ if ((bm + 1) & (bm & 0xff)) {
+ c = '<';
+ for (i = 0; bm; ++i) {
+ if (bm & 1) {
+ (void)printf("%c%d", c, i);
+ c = ',';
+ }
+ bm >>= 1;
+ }
+ (void)printf(">");
+ } else {
+ for (i = 0; bm; ++i)
+ bm >>= 1;
+ if (i > 1)
+ (void)printf("<0-%d>", i - 1);
+ else
+ (void)printf("<0>");
+ }
+}
+
+static void
+nbp_print(register const struct atNBP *np, u_int length, register u_short snet,
+ register u_char snode, register u_char skt)
+{
+ register const struct atNBPtuple *tp =
+ (const struct atNBPtuple *)((u_char *)np + nbpHeaderSize);
+ int i;
+ const u_char *ep;
+
+ if (length < nbpHeaderSize) {
+ (void)printf(" truncated-nbp %u", length);
+ return;
+ }
+
+ length -= nbpHeaderSize;
+ if (length < 8) {
+ /* must be room for at least one tuple */
+ (void)printf(" truncated-nbp %u", length + nbpHeaderSize);
+ return;
+ }
+ /* ep points to end of available data */
+ ep = snapend;
+ if ((const u_char *)tp > ep) {
+ fputs(tstr, stdout);
+ return;
+ }
+ switch (i = np->control & 0xf0) {
+
+ case nbpBrRq:
+ case nbpLkUp:
+ (void)printf(i == nbpLkUp? " nbp-lkup %d:":" nbp-brRq %d:",
+ np->id);
+ if ((const u_char *)(tp + 1) > ep) {
+ fputs(tstr, stdout);
+ return;
+ }
+ (void)nbp_name_print(tp, ep);
+ /*
+ * look for anomalies: the spec says there can only
+ * be one tuple, the address must match the source
+ * address and the enumerator should be zero.
+ */
+ if ((np->control & 0xf) != 1)
+ (void)printf(" [ntup=%d]", np->control & 0xf);
+ if (tp->enumerator)
+ (void)printf(" [enum=%d]", tp->enumerator);
+ if (EXTRACT_16BITS(&tp->net) != snet ||
+ tp->node != snode || tp->skt != skt)
+ (void)printf(" [addr=%s.%d]",
+ ataddr_string(EXTRACT_16BITS(&tp->net),
+ tp->node), tp->skt);
+ break;
+
+ case nbpLkUpReply:
+ (void)printf(" nbp-reply %d:", np->id);
+
+ /* print each of the tuples in the reply */
+ for (i = np->control & 0xf; --i >= 0 && tp; )
+ tp = nbp_tuple_print(tp, ep, snet, snode, skt);
+ break;
+
+ default:
+ (void)printf(" nbp-0x%x %d (%u)", np->control, np->id,
+ length);
+ break;
+ }
+}
+
+/* print a counted string */
+static const char *
+print_cstring(register const char *cp, register const u_char *ep)
+{
+ register u_int length;
+
+ if (cp >= (const char *)ep) {
+ fputs(tstr, stdout);
+ return (0);
+ }
+ length = *cp++;
+
+ /* Spec says string can be at most 32 bytes long */
+ if (length > 32) {
+ (void)printf("[len=%u]", length);
+ return (0);
+ }
+ while ((int)--length >= 0) {
+ if (cp >= (const char *)ep) {
+ fputs(tstr, stdout);
+ return (0);
+ }
+ putchar(*cp++);
+ }
+ return (cp);
+}
+
+static const struct atNBPtuple *
+nbp_tuple_print(register const struct atNBPtuple *tp,
+ register const u_char *ep,
+ register u_short snet, register u_char snode,
+ register u_char skt)
+{
+ register const struct atNBPtuple *tpn;
+
+ if ((const u_char *)(tp + 1) > ep) {
+ fputs(tstr, stdout);
+ return 0;
+ }
+ tpn = nbp_name_print(tp, ep);
+
+ /* if the enumerator isn't 1, print it */
+ if (tp->enumerator != 1)
+ (void)printf("(%d)", tp->enumerator);
+
+ /* if the socket doesn't match the src socket, print it */
+ if (tp->skt != skt)
+ (void)printf(" %d", tp->skt);
+
+ /* if the address doesn't match the src address, it's an anomaly */
+ if (EXTRACT_16BITS(&tp->net) != snet || tp->node != snode)
+ (void)printf(" [addr=%s]",
+ ataddr_string(EXTRACT_16BITS(&tp->net), tp->node));
+
+ return (tpn);
+}
+
+static const struct atNBPtuple *
+nbp_name_print(const struct atNBPtuple *tp, register const u_char *ep)
+{
+ register const char *cp = (const char *)tp + nbpTupleSize;
+
+ putchar(' ');
+
+ /* Object */
+ putchar('"');
+ if ((cp = print_cstring(cp, ep)) != NULL) {
+ /* Type */
+ putchar(':');
+ if ((cp = print_cstring(cp, ep)) != NULL) {
+ /* Zone */
+ putchar('@');
+ if ((cp = print_cstring(cp, ep)) != NULL)
+ putchar('"');
+ }
+ }
+ return ((const struct atNBPtuple *)cp);
+}
+
+
+#define HASHNAMESIZE 4096
+
+struct hnamemem {
+ int addr;
+ char *name;
+ struct hnamemem *nxt;
+};
+
+static struct hnamemem hnametable[HASHNAMESIZE];
+
+static const char *
+ataddr_string(u_short atnet, u_char athost)
+{
+ register struct hnamemem *tp, *tp2;
+ register int i = (atnet << 8) | athost;
+ char nambuf[MAXHOSTNAMELEN + 20];
+ static int first = 1;
+ FILE *fp;
+
+ /*
+ * if this is the first call, see if there's an AppleTalk
+ * number to name map file.
+ */
+ if (first && (first = 0, !nflag)
+ && (fp = fopen("/etc/atalk.names", "r"))) {
+ char line[256];
+ int i1, i2;
+
+ while (fgets(line, sizeof(line), fp)) {
+ if (line[0] == '\n' || line[0] == 0 || line[0] == '#')
+ continue;
+ if (sscanf(line, "%d.%d %256s", &i1, &i2, nambuf) == 3)
+ /* got a hostname. */
+ i2 |= (i1 << 8);
+ else if (sscanf(line, "%d %256s", &i1, nambuf) == 2)
+ /* got a net name */
+ i2 = (i1 << 8) | 255;
+ else
+ continue;
+
+ for (tp = &hnametable[i2 & (HASHNAMESIZE-1)];
+ tp->nxt; tp = tp->nxt)
+ ;
+ tp->addr = i2;
+ tp->nxt = newhnamemem();
+ tp->name = strdup(nambuf);
+ }
+ fclose(fp);
+ }
+
+ for (tp = &hnametable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt)
+ if (tp->addr == i)
+ return (tp->name);
+
+ /* didn't have the node name -- see if we've got the net name */
+ i |= 255;
+ for (tp2 = &hnametable[i & (HASHNAMESIZE-1)]; tp2->nxt; tp2 = tp2->nxt)
+ if (tp2->addr == i) {
+ tp->addr = (atnet << 8) | athost;
+ tp->nxt = newhnamemem();
+ (void)snprintf(nambuf, sizeof(nambuf), "%s.%d",
+ tp2->name, athost);
+ tp->name = strdup(nambuf);
+ return (tp->name);
+ }
+
+ tp->addr = (atnet << 8) | athost;
+ tp->nxt = newhnamemem();
+ if (athost != 255)
+ (void)snprintf(nambuf, sizeof(nambuf), "%d.%d", atnet, athost);
+ else
+ (void)snprintf(nambuf, sizeof(nambuf), "%d", atnet);
+ tp->name = strdup(nambuf);
+
+ return (tp->name);
+}
+
+static struct tok skt2str[] = {
+ { rtmpSkt, "rtmp" }, /* routing table maintenance */
+ { nbpSkt, "nis" }, /* name info socket */
+ { echoSkt, "echo" }, /* AppleTalk echo protocol */
+ { zipSkt, "zip" }, /* zone info protocol */
+ { 0, NULL }
+};
+
+static const char *
+ddpskt_string(register int skt)
+{
+ static char buf[8];
+
+ if (nflag) {
+ (void)snprintf(buf, sizeof(buf), "%d", skt);
+ return (buf);
+ }
+ return (tok2str(skt2str, "%d", skt));
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 18:53:08 +0000