482 lines
11 KiB
C
482 lines
11 KiB
C
/*
|
|
* Copyright (c) 1988-1990 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.
|
|
*
|
|
* $Id: print-atalk.c,v 1.2 1994/12/23 17:06:10 cgd Exp $
|
|
*/
|
|
#ifndef lint
|
|
static char rcsid[] =
|
|
"@(#) Header: print-atalk.c,v 1.22 92/03/26 14:15:34 mccanne Exp (LBL)";
|
|
#endif
|
|
|
|
#ifdef __STDC__
|
|
#include <stdlib.h>
|
|
#endif
|
|
#include <stdio.h>
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/types.h>
|
|
#include <sys/queue.h>
|
|
#include <sys/socket.h>
|
|
#include <netinet/in.h>
|
|
#include <netinet/in_systm.h>
|
|
#include <netinet/ip.h>
|
|
#include <netinet/ip_var.h>
|
|
#include <netinet/udp.h>
|
|
#include <netinet/udp_var.h>
|
|
#include <netinet/tcp.h>
|
|
#include <netinet/tcpip.h>
|
|
|
|
#include "interface.h"
|
|
#include "addrtoname.h"
|
|
#include "appletalk.h"
|
|
#include <strings.h>
|
|
#include "extract.h"
|
|
|
|
static char *ataddr_string();
|
|
static struct atNBPtuple *nbp_tuple_print();
|
|
static struct atNBPtuple *nbp_name_print();
|
|
static void atp_print();
|
|
static void nbp_print();
|
|
static void atp_bitmap_print();
|
|
|
|
/*
|
|
* Print AppleTalk Datagram Delivery Protocol packets.
|
|
*/
|
|
void
|
|
ddp_print(dp, length)
|
|
register struct atDDP *dp;
|
|
int length;
|
|
{
|
|
if (length < ddpSize) {
|
|
(void)printf(" truncated-ddp %d", length);
|
|
return;
|
|
}
|
|
(void)printf("%s.%d > %s.%d:",
|
|
ataddr_string(EXTRACT_SHORT(&dp->srcNet), dp->srcNode),
|
|
dp->srcSkt,
|
|
ataddr_string(EXTRACT_SHORT(&dp->dstNet), dp->dstNode),
|
|
dp->dstSkt);
|
|
|
|
/* 'type' is the last field of 'dp' so we need the whole thing.
|
|
If we cannot determine the type, bail out. (This last byte
|
|
happens to be *one* byte past the end of tcpdump's minimum
|
|
snapshot length.) */
|
|
if ((u_char *)(dp + 1) > snapend) {
|
|
printf(" [|atalk]");
|
|
return;
|
|
}
|
|
|
|
length -= ddpSize;
|
|
switch (dp->type) {
|
|
|
|
case ddpRTMP:
|
|
(void)printf(" at-rtmp %d", length);
|
|
break;
|
|
case ddpRTMPrequest:
|
|
(void)printf(" at-rtmpReq %d", length);
|
|
break;
|
|
case ddpNBP:
|
|
nbp_print((struct atNBP *)((u_char *)dp + ddpSize),
|
|
length, dp);
|
|
break;
|
|
case ddpATP:
|
|
atp_print((struct atATP *)((u_char *)dp + ddpSize), length);
|
|
break;
|
|
case ddpECHO:
|
|
(void)printf(" at-echo %d", length);
|
|
break;
|
|
case ddpIP:
|
|
(void)printf(" at-IP %d", length);
|
|
break;
|
|
case ddpARP:
|
|
(void)printf(" at-ARP %d", length);
|
|
break;
|
|
case ddpKLAP:
|
|
(void)printf(" at-KLAP %d", length);
|
|
break;
|
|
default:
|
|
(void)printf(" at-#%d %d", length);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
atp_print(ap, length)
|
|
register struct atATP *ap;
|
|
int length;
|
|
{
|
|
char c;
|
|
long data;
|
|
|
|
if ((u_char *)(ap + 1) > snapend) {
|
|
/* Just bail if we don't have the whole chunk. */
|
|
printf(" [|atalk]");
|
|
return;
|
|
}
|
|
length -= sizeof(*ap);
|
|
switch (ap->control & 0xc0) {
|
|
|
|
case atpReqCode:
|
|
(void)printf(" atp-req%s %d",
|
|
ap->control & atpXO? " " : "*",
|
|
EXTRACT_SHORT(&ap->transID));
|
|
|
|
atp_bitmap_print(ap->bitmap);
|
|
|
|
if (length != 0)
|
|
(void)printf(" [len=%d]", 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 (%d)",
|
|
ap->control & atpEOM? "*" : " ",
|
|
EXTRACT_SHORT(&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_SHORT(&ap->transID));
|
|
|
|
atp_bitmap_print(ap->bitmap);
|
|
|
|
/* length should be zero */
|
|
if (length)
|
|
(void)printf(" [len=%d]", 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 (%d)", ap->control,
|
|
EXTRACT_SHORT(&ap->transID), length);
|
|
break;
|
|
}
|
|
data = EXTRACT_LONG(&ap->userData);
|
|
if (data != 0)
|
|
(void)printf(" 0x%x", data);
|
|
}
|
|
|
|
static void
|
|
atp_bitmap_print(bm)
|
|
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(np, length, dp)
|
|
register struct atNBP *np;
|
|
int length;
|
|
register struct atDDP *dp;
|
|
{
|
|
register struct atNBPtuple *tp =
|
|
(struct atNBPtuple *)((u_char *)np + nbpHeaderSize);
|
|
int i = length;
|
|
u_char *ep;
|
|
|
|
length -= nbpHeaderSize;
|
|
if (length < 8) {
|
|
/* must be room for at least one tuple */
|
|
(void)printf(" truncated-nbp %d", length + nbpHeaderSize);
|
|
return;
|
|
}
|
|
/* ep points to end of available data */
|
|
ep = snapend;
|
|
if ((u_char *)tp > ep) {
|
|
printf(" [|atalk]");
|
|
return;
|
|
}
|
|
switch (i = np->control & 0xf0) {
|
|
|
|
case nbpBrRq:
|
|
case nbpLkUp:
|
|
(void)printf(i == nbpLkUp? " nbp-lkup %d:":" nbp-brRq %d:",
|
|
np->id);
|
|
if ((u_char *)(tp + 1) > ep) {
|
|
printf(" [|atalk]");
|
|
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_SHORT(&tp->net) != EXTRACT_SHORT(&dp->srcNet) ||
|
|
tp->node != dp->srcNode || tp->skt != dp->srcSkt)
|
|
(void)printf(" [addr=%s.%d]",
|
|
ataddr_string(EXTRACT_SHORT(&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, dp);
|
|
break;
|
|
|
|
default:
|
|
(void)printf(" nbp-0x%x %d (%d)", np->control, np->id,
|
|
length);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* print a counted string */
|
|
static char *
|
|
print_cstring(cp, ep)
|
|
register char *cp;
|
|
register u_char *ep;
|
|
{
|
|
register int length;
|
|
|
|
if (cp >= (char *)ep) {
|
|
(void)printf("[|atalk]");
|
|
return (0);
|
|
}
|
|
length = *cp++;
|
|
|
|
/* Spec says string can be at most 32 bytes long */
|
|
if (length < 0 || length > 32) {
|
|
(void)printf("[len=%d]", length);
|
|
return (0);
|
|
}
|
|
while (--length >= 0) {
|
|
if (cp >= (char *)ep) {
|
|
(void)printf("[|atalk]");
|
|
return (0);
|
|
}
|
|
putchar(*cp++);
|
|
}
|
|
return (cp);
|
|
}
|
|
|
|
static struct atNBPtuple *
|
|
nbp_tuple_print(tp, ep, dp)
|
|
register struct atNBPtuple *tp;
|
|
register u_char *ep;
|
|
register struct atDDP *dp;
|
|
{
|
|
register struct atNBPtuple *tpn;
|
|
|
|
if ((u_char *)(tp + 1) > ep) {
|
|
printf(" [|atalk]");
|
|
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 != dp->srcSkt)
|
|
(void)printf(" %d", tp->skt);
|
|
|
|
/* if the address doesn't match the src address, it's an anomaly */
|
|
if (EXTRACT_SHORT(&tp->net) != EXTRACT_SHORT(&dp->srcNet) ||
|
|
tp->node != dp->srcNode)
|
|
(void)printf(" [addr=%s]",
|
|
ataddr_string(EXTRACT_SHORT(&tp->net), tp->node));
|
|
|
|
return (tpn);
|
|
}
|
|
|
|
static struct atNBPtuple *
|
|
nbp_name_print(tp, ep)
|
|
struct atNBPtuple *tp;
|
|
register u_char *ep;
|
|
{
|
|
register char *cp = (char *)tp + nbpTupleSize;
|
|
|
|
putchar(' ');
|
|
|
|
/* Object */
|
|
putchar('"');
|
|
if (cp = print_cstring(cp, ep)) {
|
|
/* Type */
|
|
putchar(':');
|
|
if (cp = print_cstring(cp, ep)) {
|
|
/* Zone */
|
|
putchar('@');
|
|
if (cp = print_cstring(cp, ep))
|
|
putchar('"');
|
|
}
|
|
}
|
|
return ((struct atNBPtuple *)cp);
|
|
}
|
|
|
|
|
|
#define HASHNAMESIZE 4096
|
|
|
|
struct hnamemem {
|
|
int addr;
|
|
char *name;
|
|
struct hnamemem *nxt;
|
|
};
|
|
|
|
static struct hnamemem hnametable[HASHNAMESIZE];
|
|
|
|
static char *
|
|
ataddr_string(atnet, athost)
|
|
u_short atnet;
|
|
u_char athost;
|
|
{
|
|
register struct hnamemem *tp, *tp2;
|
|
register int i = (atnet << 8) | athost;
|
|
char nambuf[256];
|
|
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, i3;
|
|
|
|
while (fgets(line, sizeof(line), fp)) {
|
|
if (line[0] == '\n' || line[0] == 0 || line[0] == '#')
|
|
continue;
|
|
if (sscanf(line, "%d.%d.%d %s", &i1, &i2, &i3,
|
|
nambuf) == 4)
|
|
/* got a hostname. */
|
|
i3 |= ((i1 << 8) | i2) << 8;
|
|
else if (sscanf(line, "%d.%d %s", &i1, &i2,
|
|
nambuf) == 3)
|
|
/* got a net name */
|
|
i3 = (((i1 << 8) | i2) << 8) | 255;
|
|
else
|
|
continue;
|
|
|
|
for (tp = &hnametable[i3 & (HASHNAMESIZE-1)];
|
|
tp->nxt; tp = tp->nxt)
|
|
;
|
|
tp->addr = i3;
|
|
tp->nxt = (struct hnamemem *)calloc(1, sizeof(*tp));
|
|
i3 = strlen(nambuf) + 1;
|
|
tp->name = strcpy(malloc((unsigned) i3), 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 = (struct hnamemem *)calloc(1, sizeof(*tp));
|
|
(void)sprintf(nambuf, "%s.%d", tp2->name, athost);
|
|
i = strlen(nambuf) + 1;
|
|
tp->name = strcpy(malloc((unsigned) i), nambuf);
|
|
return (tp->name);
|
|
}
|
|
|
|
tp->addr = (atnet << 8) | athost;
|
|
tp->nxt = (struct hnamemem *)calloc(1, sizeof(*tp));
|
|
if (athost != 255)
|
|
(void)sprintf(nambuf, "%d.%d.%d",
|
|
atnet >> 8, atnet & 0xff, athost);
|
|
else
|
|
(void)sprintf(nambuf, "%d.%d", atnet >> 8, atnet & 0xff);
|
|
i = strlen(nambuf) + 1;
|
|
tp->name = strcpy(malloc((unsigned) i), nambuf);
|
|
|
|
return (tp->name);
|
|
}
|