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7d7201ff75
tcpdump/print-decnet.c
guy f616391792 Add a bunch of bounds checks. 
Don't bother copying the route header - we're using the EXTRACT_ macros,
so we don't have to worry about alignment.

Use the length field from the packet, not just the length of the
containing packet, and check to make sure the containing packet is long
enough to contain it.

Add a bunch of checks against the packet length.

In "default_print()" calls, cut the length off at the captured data
length.  In other calls, don't - let the bounds checks handle caplen <
length.
2005-05-06 02:16:26 +00:00

896 lines
24 KiB
C
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/*
* Copyright (c) 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.
*/
#ifndef lint
static const char rcsid[] _U_ =
"@(#) $Header: /tcpdump/master/tcpdump/print-decnet.c,v 1.39 2005-05-06 02:16:26 guy Exp $ (LBL)";
#endif
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <tcpdump-stdinc.h>
struct mbuf;
struct rtentry;
#ifdef HAVE_NETDNET_DNETDB_H
#include <netdnet/dnetdb.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "decnet.h"
#include "extract.h"
#include "interface.h"
#include "addrtoname.h"
/* Forwards */
static int print_decnet_ctlmsg(const union routehdr *, u_int, u_int);
static void print_t_info(int);
static int print_l1_routes(const char *, u_int);
static int print_l2_routes(const char *, u_int);
static void print_i_info(int);
static int print_elist(const char *, u_int);
static int print_nsp(const u_char *, u_int);
static void print_reason(int);
#ifdef PRINT_NSPDATA
static void pdata(u_char *, int);
#endif
#ifndef HAVE_NETDNET_DNETDB_H_DNET_HTOA
extern char *dnet_htoa(struct dn_naddr *);
#endif
void
decnet_print(register const u_char *ap, register u_int length,
register u_int caplen)
{
register const union routehdr *rhp;
register int mflags;
int dst, src, hops;
u_int nsplen, pktlen;
const u_char *nspp;
if (length < sizeof(struct shorthdr)) {
(void)printf("[|decnet]");
return;
}
TCHECK2(*ap, sizeof(short));
pktlen = EXTRACT_LE_16BITS(ap);
if (pktlen < sizeof(struct shorthdr)) {
(void)printf("[|decnet]");
return;
}
if (pktlen > length) {
(void)printf("[|decnet]");
return;
}
length = pktlen;
rhp = (const union routehdr *)&(ap[sizeof(short)]);
TCHECK(rhp->rh_short.sh_flags);
mflags = EXTRACT_LE_8BITS(rhp->rh_short.sh_flags);
if (mflags & RMF_PAD) {
/* pad bytes of some sort in front of message */
u_int padlen = mflags & RMF_PADMASK;
if (vflag)
(void) printf("[pad:%d] ", padlen);
if (length < padlen + 2) {
(void)printf("[|decnet]");
return;
}
TCHECK2(ap[sizeof(short)], padlen);
ap += padlen;
length -= padlen;
caplen -= padlen;
rhp = (const union routehdr *)&(ap[sizeof(short)]);
mflags = EXTRACT_LE_8BITS(rhp->rh_short.sh_flags);
}
if (mflags & RMF_FVER) {
(void) printf("future-version-decnet");
default_print(ap, min(length, caplen));
return;
}
/* is it a control message? */
if (mflags & RMF_CTLMSG) {
if (!print_decnet_ctlmsg(rhp, length, caplen))
goto trunc;
return;
}
switch (mflags & RMF_MASK) {
case RMF_LONG:
if (length < sizeof(struct longhdr)) {
(void)printf("[|decnet]");
return;
}
TCHECK(rhp->rh_long);
dst =
EXTRACT_LE_16BITS(rhp->rh_long.lg_dst.dne_remote.dne_nodeaddr);
src =
EXTRACT_LE_16BITS(rhp->rh_long.lg_src.dne_remote.dne_nodeaddr);
hops = EXTRACT_LE_8BITS(rhp->rh_long.lg_visits);
nspp = &(ap[sizeof(short) + sizeof(struct longhdr)]);
nsplen = length - sizeof(struct longhdr);
break;
case RMF_SHORT:
TCHECK(rhp->rh_short);
dst = EXTRACT_LE_16BITS(rhp->rh_short.sh_dst);
src = EXTRACT_LE_16BITS(rhp->rh_short.sh_src);
hops = (EXTRACT_LE_8BITS(rhp->rh_short.sh_visits) & VIS_MASK)+1;
nspp = &(ap[sizeof(short) + sizeof(struct shorthdr)]);
nsplen = length - sizeof(struct shorthdr);
break;
default:
(void) printf("unknown message flags under mask");
default_print((u_char *)ap, min(length, caplen));
return;
}
(void)printf("%s > %s %d ",
dnaddr_string(src), dnaddr_string(dst), pktlen);
if (vflag) {
if (mflags & RMF_RQR)
(void)printf("RQR ");
if (mflags & RMF_RTS)
(void)printf("RTS ");
if (mflags & RMF_IE)
(void)printf("IE ");
(void)printf("%d hops ", hops);
}
if (!print_nsp(nspp, nsplen))
goto trunc;
return;
trunc:
(void)printf("[|decnet]");
return;
}
static int
print_decnet_ctlmsg(register const union routehdr *rhp, u_int length,
u_int caplen)
{
int mflags = EXTRACT_LE_8BITS(rhp->rh_short.sh_flags);
register union controlmsg *cmp = (union controlmsg *)rhp;
int src, dst, info, blksize, eco, ueco, hello, other, vers;
etheraddr srcea, rtea;
int priority;
char *rhpx = (char *)rhp;
int ret;
switch (mflags & RMF_CTLMASK) {
case RMF_INIT:
(void)printf("init ");
if (length < sizeof(struct initmsg))
goto trunc;
TCHECK(cmp->cm_init);
src = EXTRACT_LE_16BITS(cmp->cm_init.in_src);
info = EXTRACT_LE_8BITS(cmp->cm_init.in_info);
blksize = EXTRACT_LE_16BITS(cmp->cm_init.in_blksize);
vers = EXTRACT_LE_8BITS(cmp->cm_init.in_vers);
eco = EXTRACT_LE_8BITS(cmp->cm_init.in_eco);
ueco = EXTRACT_LE_8BITS(cmp->cm_init.in_ueco);
hello = EXTRACT_LE_16BITS(cmp->cm_init.in_hello);
print_t_info(info);
(void)printf(
"src %sblksize %d vers %d eco %d ueco %d hello %d",
dnaddr_string(src), blksize, vers, eco, ueco,
hello);
ret = 1;
break;
case RMF_VER:
(void)printf("verification ");
if (length < sizeof(struct verifmsg))
goto trunc;
TCHECK(cmp->cm_ver);
src = EXTRACT_LE_16BITS(cmp->cm_ver.ve_src);
other = EXTRACT_LE_8BITS(cmp->cm_ver.ve_fcnval);
(void)printf("src %s fcnval %o", dnaddr_string(src), other);
ret = 1;
break;
case RMF_TEST:
(void)printf("test ");
if (length < sizeof(struct testmsg))
goto trunc;
TCHECK(cmp->cm_test);
src = EXTRACT_LE_16BITS(cmp->cm_test.te_src);
other = EXTRACT_LE_8BITS(cmp->cm_test.te_data);
(void)printf("src %s data %o", dnaddr_string(src), other);
ret = 1;
break;
case RMF_L1ROUT:
(void)printf("lev-1-routing ");
if (length < sizeof(struct l1rout))
goto trunc;
TCHECK(cmp->cm_l1rou);
src = EXTRACT_LE_16BITS(cmp->cm_l1rou.r1_src);
(void)printf("src %s ", dnaddr_string(src));
ret = print_l1_routes(&(rhpx[sizeof(struct l1rout)]),
length - sizeof(struct l1rout));
break;
case RMF_L2ROUT:
(void)printf("lev-2-routing ");
if (length < sizeof(struct l2rout))
goto trunc;
TCHECK(cmp->cm_l2rout);
src = EXTRACT_LE_16BITS(cmp->cm_l2rout.r2_src);
(void)printf("src %s ", dnaddr_string(src));
ret = print_l2_routes(&(rhpx[sizeof(struct l2rout)]),
length - sizeof(struct l2rout));
break;
case RMF_RHELLO:
(void)printf("router-hello ");
if (length < sizeof(struct rhellomsg))
goto trunc;
TCHECK(cmp->cm_rhello);
vers = EXTRACT_LE_8BITS(cmp->cm_rhello.rh_vers);
eco = EXTRACT_LE_8BITS(cmp->cm_rhello.rh_eco);
ueco = EXTRACT_LE_8BITS(cmp->cm_rhello.rh_ueco);
memcpy((char *)&srcea, (char *)&(cmp->cm_rhello.rh_src),
sizeof(srcea));
src = EXTRACT_LE_16BITS(srcea.dne_remote.dne_nodeaddr);
info = EXTRACT_LE_8BITS(cmp->cm_rhello.rh_info);
blksize = EXTRACT_LE_16BITS(cmp->cm_rhello.rh_blksize);
priority = EXTRACT_LE_8BITS(cmp->cm_rhello.rh_priority);
hello = EXTRACT_LE_16BITS(cmp->cm_rhello.rh_hello);
print_i_info(info);
(void)printf(
"vers %d eco %d ueco %d src %s blksize %d pri %d hello %d",
vers, eco, ueco, dnaddr_string(src),
blksize, priority, hello);
ret = print_elist(&(rhpx[sizeof(struct rhellomsg)]),
length - sizeof(struct rhellomsg));
break;
case RMF_EHELLO:
(void)printf("endnode-hello ");
if (length < sizeof(struct ehellomsg))
goto trunc;
TCHECK(cmp->cm_ehello);
vers = EXTRACT_LE_8BITS(cmp->cm_ehello.eh_vers);
eco = EXTRACT_LE_8BITS(cmp->cm_ehello.eh_eco);
ueco = EXTRACT_LE_8BITS(cmp->cm_ehello.eh_ueco);
memcpy((char *)&srcea, (char *)&(cmp->cm_ehello.eh_src),
sizeof(srcea));
src = EXTRACT_LE_16BITS(srcea.dne_remote.dne_nodeaddr);
info = EXTRACT_LE_8BITS(cmp->cm_ehello.eh_info);
blksize = EXTRACT_LE_16BITS(cmp->cm_ehello.eh_blksize);
/*seed*/
memcpy((char *)&rtea, (char *)&(cmp->cm_ehello.eh_router),
sizeof(rtea));
dst = EXTRACT_LE_16BITS(rtea.dne_remote.dne_nodeaddr);
hello = EXTRACT_LE_16BITS(cmp->cm_ehello.eh_hello);
other = EXTRACT_LE_8BITS(cmp->cm_ehello.eh_data);
print_i_info(info);
(void)printf(
"vers %d eco %d ueco %d src %s blksize %d rtr %s hello %d data %o",
vers, eco, ueco, dnaddr_string(src),
blksize, dnaddr_string(dst), hello, other);
ret = 1;
break;
default:
(void)printf("unknown control message");
default_print((u_char *)rhp, min(length, caplen));
ret = 1;
break;
}
return (ret);
trunc:
return (0);
}
static void
print_t_info(int info)
{
int ntype = info & 3;
switch (ntype) {
case 0: (void)printf("reserved-ntype? "); break;
case TI_L2ROUT: (void)printf("l2rout "); break;
case TI_L1ROUT: (void)printf("l1rout "); break;
case TI_ENDNODE: (void)printf("endnode "); break;
}
if (info & TI_VERIF)
(void)printf("verif ");
if (info & TI_BLOCK)
(void)printf("blo ");
}
static int
print_l1_routes(const char *rp, u_int len)
{
int count;
int id;
int info;
/* The last short is a checksum */
while (len > (3 * sizeof(short))) {
TCHECK2(*rp, 3 * sizeof(short));
count = EXTRACT_LE_16BITS(rp);
if (count > 1024)
return (1); /* seems to be bogus from here on */
rp += sizeof(short);
len -= sizeof(short);
id = EXTRACT_LE_16BITS(rp);
rp += sizeof(short);
len -= sizeof(short);
info = EXTRACT_LE_16BITS(rp);
rp += sizeof(short);
len -= sizeof(short);
(void)printf("{ids %d-%d cost %d hops %d} ", id, id + count,
RI_COST(info), RI_HOPS(info));
}
return (1);
trunc:
return (0);
}
static int
print_l2_routes(const char *rp, u_int len)
{
int count;
int area;
int info;
/* The last short is a checksum */
while (len > (3 * sizeof(short))) {
TCHECK2(*rp, 3 * sizeof(short));
count = EXTRACT_LE_16BITS(rp);
if (count > 1024)
return (1); /* seems to be bogus from here on */
rp += sizeof(short);
len -= sizeof(short);
area = EXTRACT_LE_16BITS(rp);
rp += sizeof(short);
len -= sizeof(short);
info = EXTRACT_LE_16BITS(rp);
rp += sizeof(short);
len -= sizeof(short);
(void)printf("{areas %d-%d cost %d hops %d} ", area, area + count,
RI_COST(info), RI_HOPS(info));
}
return (1);
trunc:
return (0);
}
static void
print_i_info(int info)
{
int ntype = info & II_TYPEMASK;
switch (ntype) {
case 0: (void)printf("reserved-ntype? "); break;
case II_L2ROUT: (void)printf("l2rout "); break;
case II_L1ROUT: (void)printf("l1rout "); break;
case II_ENDNODE: (void)printf("endnode "); break;
}
if (info & II_VERIF)
(void)printf("verif ");
if (info & II_NOMCAST)
(void)printf("nomcast ");
if (info & II_BLOCK)
(void)printf("blo ");
}
static int
print_elist(const char *elp _U_, u_int len _U_)
{
/* Not enough examples available for me to debug this */
return (1);
}
static int
print_nsp(const u_char *nspp, u_int nsplen)
{
const struct nsphdr *nsphp = (struct nsphdr *)nspp;
int dst, src, flags;
if (nsplen < sizeof(struct nsphdr))
goto trunc;
TCHECK(*nsphp);
flags = EXTRACT_LE_8BITS(nsphp->nh_flags);
dst = EXTRACT_LE_16BITS(nsphp->nh_dst);
src = EXTRACT_LE_16BITS(nsphp->nh_src);
switch (flags & NSP_TYPEMASK) {
case MFT_DATA:
switch (flags & NSP_SUBMASK) {
case MFS_BOM:
case MFS_MOM:
case MFS_EOM:
case MFS_BOM+MFS_EOM:
printf("data %d>%d ", src, dst);
{
struct seghdr *shp = (struct seghdr *)nspp;
int ack;
#ifdef PRINT_NSPDATA
u_char *dp;
#endif
u_int data_off = sizeof(struct minseghdr);
if (nsplen < data_off)
goto trunc;
TCHECK(shp->sh_seq[0]);
ack = EXTRACT_LE_16BITS(shp->sh_seq[0]);
if (ack & SGQ_ACK) { /* acknum field */
if ((ack & SGQ_NAK) == SGQ_NAK)
(void)printf("nak %d ", ack & SGQ_MASK);
else
(void)printf("ack %d ", ack & SGQ_MASK);
data_off += sizeof(short);
if (nsplen < data_off)
goto trunc;
TCHECK(shp->sh_seq[1]);
ack = EXTRACT_LE_16BITS(shp->sh_seq[1]);
if (ack & SGQ_OACK) { /* ackoth field */
if ((ack & SGQ_ONAK) == SGQ_ONAK)
(void)printf("onak %d ", ack & SGQ_MASK);
else
(void)printf("oack %d ", ack & SGQ_MASK);
data_off += sizeof(short);
if (nsplen < data_off)
goto trunc;
TCHECK(shp->sh_seq[2]);
ack = EXTRACT_LE_16BITS(shp->sh_seq[2]);
}
}
(void)printf("seg %d ", ack & SGQ_MASK);
#ifdef PRINT_NSPDATA
if (nsplen > data_off) {
dp = &(nspp[data_off]);
TCHECK2(*dp, nsplen - data_off);
pdata(dp, nsplen - data_off);
}
#endif
}
break;
case MFS_ILS+MFS_INT:
printf("intr ");
{
struct seghdr *shp = (struct seghdr *)nspp;
int ack;
#ifdef PRINT_NSPDATA
u_char *dp;
#endif
u_int data_off = sizeof(struct minseghdr);
if (nsplen < data_off)
goto trunc;
TCHECK(shp->sh_seq[0]);
ack = EXTRACT_LE_16BITS(shp->sh_seq[0]);
if (ack & SGQ_ACK) { /* acknum field */
if ((ack & SGQ_NAK) == SGQ_NAK)
(void)printf("nak %d ", ack & SGQ_MASK);
else
(void)printf("ack %d ", ack & SGQ_MASK);
data_off += sizeof(short);
if (nsplen < data_off)
goto trunc;
TCHECK(shp->sh_seq[1]);
ack = EXTRACT_LE_16BITS(shp->sh_seq[1]);
if (ack & SGQ_OACK) { /* ackdat field */
if ((ack & SGQ_ONAK) == SGQ_ONAK)
(void)printf("nakdat %d ", ack & SGQ_MASK);
else
(void)printf("ackdat %d ", ack & SGQ_MASK);
data_off += sizeof(short);
if (nsplen < data_off)
goto trunc;
TCHECK(shp->sh_seq[2]);
ack = EXTRACT_LE_16BITS(shp->sh_seq[2]);
}
}
(void)printf("seg %d ", ack & SGQ_MASK);
#ifdef PRINT_NSPDATA
if (nsplen > data_off) {
dp = &(nspp[data_off]);
TCHECK2(*dp, nsplen - data_off);
pdata(dp, nsplen - data_off);
}
#endif
}
break;
case MFS_ILS:
(void)printf("link-service %d>%d ", src, dst);
{
struct seghdr *shp = (struct seghdr *)nspp;
struct lsmsg *lsmp =
(struct lsmsg *)&(nspp[sizeof(struct seghdr)]);
int ack;
int lsflags, fcval;
if (nsplen < sizeof(struct seghdr) + sizeof(struct lsmsg))
goto trunc;
TCHECK(shp->sh_seq[0]);
ack = EXTRACT_LE_16BITS(shp->sh_seq[0]);
if (ack & SGQ_ACK) { /* acknum field */
if ((ack & SGQ_NAK) == SGQ_NAK)
(void)printf("nak %d ", ack & SGQ_MASK);
else
(void)printf("ack %d ", ack & SGQ_MASK);
TCHECK(shp->sh_seq[1]);
ack = EXTRACT_LE_16BITS(shp->sh_seq[1]);
if (ack & SGQ_OACK) { /* ackdat field */
if ((ack & SGQ_ONAK) == SGQ_ONAK)
(void)printf("nakdat %d ", ack & SGQ_MASK);
else
(void)printf("ackdat %d ", ack & SGQ_MASK);
TCHECK(shp->sh_seq[2]);
ack = EXTRACT_LE_16BITS(shp->sh_seq[2]);
}
}
(void)printf("seg %d ", ack & SGQ_MASK);
TCHECK(*lsmp);
lsflags = EXTRACT_LE_8BITS(lsmp->ls_lsflags);
fcval = EXTRACT_LE_8BITS(lsmp->ls_fcval);
switch (lsflags & LSI_MASK) {
case LSI_DATA:
(void)printf("dat seg count %d ", fcval);
switch (lsflags & LSM_MASK) {
case LSM_NOCHANGE:
break;
case LSM_DONOTSEND:
(void)printf("donotsend-data ");
break;
case LSM_SEND:
(void)printf("send-data ");
break;
default:
(void)printf("reserved-fcmod? %x", lsflags);
break;
}
break;
case LSI_INTR:
(void)printf("intr req count %d ", fcval);
break;
default:
(void)printf("reserved-fcval-int? %x", lsflags);
break;
}
}
break;
default:
(void)printf("reserved-subtype? %x %d > %d", flags, src, dst);
break;
}
break;
case MFT_ACK:
switch (flags & NSP_SUBMASK) {
case MFS_DACK:
(void)printf("data-ack %d>%d ", src, dst);
{
struct ackmsg *amp = (struct ackmsg *)nspp;
int ack;
if (nsplen < sizeof(struct ackmsg))
goto trunc;
TCHECK(*amp);
ack = EXTRACT_LE_16BITS(amp->ak_acknum[0]);
if (ack & SGQ_ACK) { /* acknum field */
if ((ack & SGQ_NAK) == SGQ_NAK)
(void)printf("nak %d ", ack & SGQ_MASK);
else
(void)printf("ack %d ", ack & SGQ_MASK);
ack = EXTRACT_LE_16BITS(amp->ak_acknum[1]);
if (ack & SGQ_OACK) { /* ackoth field */
if ((ack & SGQ_ONAK) == SGQ_ONAK)
(void)printf("onak %d ", ack & SGQ_MASK);
else
(void)printf("oack %d ", ack & SGQ_MASK);
}
}
}
break;
case MFS_IACK:
(void)printf("ils-ack %d>%d ", src, dst);
{
struct ackmsg *amp = (struct ackmsg *)nspp;
int ack;
if (nsplen < sizeof(struct ackmsg))
goto trunc;
TCHECK(*amp);
ack = EXTRACT_LE_16BITS(amp->ak_acknum[0]);
if (ack & SGQ_ACK) { /* acknum field */
if ((ack & SGQ_NAK) == SGQ_NAK)
(void)printf("nak %d ", ack & SGQ_MASK);
else
(void)printf("ack %d ", ack & SGQ_MASK);
TCHECK(amp->ak_acknum[1]);
ack = EXTRACT_LE_16BITS(amp->ak_acknum[1]);
if (ack & SGQ_OACK) { /* ackdat field */
if ((ack & SGQ_ONAK) == SGQ_ONAK)
(void)printf("nakdat %d ", ack & SGQ_MASK);
else
(void)printf("ackdat %d ", ack & SGQ_MASK);
}
}
}
break;
case MFS_CACK:
(void)printf("conn-ack %d", dst);
break;
default:
(void)printf("reserved-acktype? %x %d > %d", flags, src, dst);
break;
}
break;
case MFT_CTL:
switch (flags & NSP_SUBMASK) {
case MFS_CI:
case MFS_RCI:
if ((flags & NSP_SUBMASK) == MFS_CI)
(void)printf("conn-initiate ");
else
(void)printf("retrans-conn-initiate ");
(void)printf("%d>%d ", src, dst);
{
struct cimsg *cimp = (struct cimsg *)nspp;
int services, info, segsize;
#ifdef PRINT_NSPDATA
u_char *dp;
#endif
if (nsplen < sizeof(struct cimsg))
goto trunc;
TCHECK(*cimp);
services = EXTRACT_LE_8BITS(cimp->ci_services);
info = EXTRACT_LE_8BITS(cimp->ci_info);
segsize = EXTRACT_LE_16BITS(cimp->ci_segsize);
switch (services & COS_MASK) {
case COS_NONE:
break;
case COS_SEGMENT:
(void)printf("seg ");
break;
case COS_MESSAGE:
(void)printf("msg ");
break;
case COS_CRYPTSER:
(void)printf("crypt ");
break;
}
switch (info & COI_MASK) {
case COI_32:
(void)printf("ver 3.2 ");
break;
case COI_31:
(void)printf("ver 3.1 ");
break;
case COI_40:
(void)printf("ver 4.0 ");
break;
case COI_41:
(void)printf("ver 4.1 ");
break;
}
(void)printf("segsize %d ", segsize);
#ifdef PRINT_NSPDATA
if (nsplen > sizeof(struct cimsg)) {
dp = &(nspp[sizeof(struct cimsg)]);
TCHECK2(*dp, nsplen - sizeof(struct cimsg));
pdata(dp, nsplen - sizeof(struct cimsg));
}
#endif
}
break;
case MFS_CC:
(void)printf("conn-confirm %d>%d ", src, dst);
{
struct ccmsg *ccmp = (struct ccmsg *)nspp;
int services, info;
u_int segsize, optlen;
#ifdef PRINT_NSPDATA
u_char *dp;
#endif
if (nsplen < sizeof(struct ccmsg))
goto trunc;
TCHECK(*ccmp);
services = EXTRACT_LE_8BITS(ccmp->cc_services);
info = EXTRACT_LE_8BITS(ccmp->cc_info);
segsize = EXTRACT_LE_16BITS(ccmp->cc_segsize);
optlen = EXTRACT_LE_8BITS(ccmp->cc_optlen);
switch (services & COS_MASK) {
case COS_NONE:
break;
case COS_SEGMENT:
(void)printf("seg ");
break;
case COS_MESSAGE:
(void)printf("msg ");
break;
case COS_CRYPTSER:
(void)printf("crypt ");
break;
}
switch (info & COI_MASK) {
case COI_32:
(void)printf("ver 3.2 ");
break;
case COI_31:
(void)printf("ver 3.1 ");
break;
case COI_40:
(void)printf("ver 4.0 ");
break;
case COI_41:
(void)printf("ver 4.1 ");
break;
}
(void)printf("segsize %d ", segsize);
if (optlen) {
(void)printf("optlen %d ", optlen);
#ifdef PRINT_NSPDATA
if (optlen > nsplen - sizeof(struct ccmsg))
goto trunc;
dp = &(nspp[sizeof(struct ccmsg)]);
TCHECK2(*dp, optlen);
pdata(dp, optlen);
#endif
}
}
break;
case MFS_DI:
(void)printf("disconn-initiate %d>%d ", src, dst);
{
struct dimsg *dimp = (struct dimsg *)nspp;
int reason;
u_int optlen;
#ifdef PRINT_NSPDATA
u_char *dp;
#endif
if (nsplen < sizeof(struct dimsg))
goto trunc;
TCHECK(*dimp);
reason = EXTRACT_LE_16BITS(dimp->di_reason);
optlen = EXTRACT_LE_8BITS(dimp->di_optlen);
print_reason(reason);
if (optlen) {
(void)printf("optlen %d ", optlen);
#ifdef PRINT_NSPDATA
if (optlen > nsplen - sizeof(struct dimsg))
goto trunc;
dp = &(nspp[sizeof(struct dimsg)]);
TCHECK2(*dp, optlen);
pdata(dp, optlen);
#endif
}
}
break;
case MFS_DC:
(void)printf("disconn-confirm %d>%d ", src, dst);
{
struct dcmsg *dcmp = (struct dcmsg *)nspp;
int reason;
TCHECK(*dcmp);
reason = EXTRACT_LE_16BITS(dcmp->dc_reason);
print_reason(reason);
}
break;
default:
(void)printf("reserved-ctltype? %x %d > %d", flags, src, dst);
break;
}
break;
default:
(void)printf("reserved-type? %x %d > %d", flags, src, dst);
break;
}
return (1);
trunc:
return (0);
}
static struct tok reason2str[] = {
{ UC_OBJREJECT, "object rejected connect" },
{ UC_RESOURCES, "insufficient resources" },
{ UC_NOSUCHNODE, "unrecognized node name" },
{ DI_SHUT, "node is shutting down" },
{ UC_NOSUCHOBJ, "unrecognized object" },
{ UC_INVOBJFORMAT, "invalid object name format" },
{ UC_OBJTOOBUSY, "object too busy" },
{ DI_PROTOCOL, "protocol error discovered" },
{ DI_TPA, "third party abort" },
{ UC_USERABORT, "user abort" },
{ UC_INVNODEFORMAT, "invalid node name format" },
{ UC_LOCALSHUT, "local node shutting down" },
{ DI_LOCALRESRC, "insufficient local resources" },
{ DI_REMUSERRESRC, "insufficient remote user resources" },
{ UC_ACCESSREJECT, "invalid access control information" },
{ DI_BADACCNT, "bad ACCOUNT information" },
{ UC_NORESPONSE, "no response from object" },
{ UC_UNREACHABLE, "node unreachable" },
{ DC_NOLINK, "no link terminate" },
{ DC_COMPLETE, "disconnect complete" },
{ DI_BADIMAGE, "bad image data in connect" },
{ DI_SERVMISMATCH, "cryptographic service mismatch" },
{ 0, NULL }
};
static void
print_reason(register int reason)
{
printf("%s ", tok2str(reason2str, "reason-%d", reason));
}
const char *
dnnum_string(u_short dnaddr)
{
char *str;
size_t siz;
int area = (u_short)(dnaddr & AREAMASK) >> AREASHIFT;
int node = dnaddr & NODEMASK;
str = (char *)malloc(siz = sizeof("00.0000"));
if (str == NULL)
error("dnnum_string: malloc");
snprintf(str, siz, "%d.%d", area, node);
return(str);
}
const char *
dnname_string(u_short dnaddr)
{
#ifdef HAVE_DNET_HTOA
struct dn_naddr dna;
dna.a_len = sizeof(short);
memcpy((char *)dna.a_addr, (char *)&dnaddr, sizeof(short));
return (strdup(dnet_htoa(&dna)));
#else
return(dnnum_string(dnaddr)); /* punt */
#endif
}
#ifdef PRINT_NSPDATA
static void
pdata(u_char *dp, u_int maxlen)
{
char c;
u_int x = maxlen;
while (x-- > 0) {
c = *dp++;
safeputchar(c);
}
}
#endif
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