695 lines
15 KiB
C
695 lines
15 KiB
C
/*
|
|
* Written by Atsushi Murai <amurai@spec.co.jp>
|
|
*
|
|
* Copyright (C) 1998, System Planning and Engineering Co. All rights reserverd.
|
|
*
|
|
* Redistribution and use in source and binary forms are permitted
|
|
* provided that the above copyright notice and this paragraph are
|
|
* duplicated in all such forms and that any documentation,
|
|
* advertising materials, and other materials related to such
|
|
* distribution and use acknowledge that the software was developed
|
|
* by the System Planning and Engineering Co. The name of the
|
|
* SPEC may not 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 MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
|
|
*
|
|
* $FreeBSD$
|
|
*
|
|
* TODO:
|
|
* oClean up.
|
|
* oConsidering for word alignment for other platform.
|
|
*/
|
|
/*
|
|
alias_nbt.c performs special processing for NetBios over TCP/IP
|
|
sessions by UDP.
|
|
|
|
Initial version: May, 1998 (Atsushi Murai <amurai@spec.co.jp>)
|
|
|
|
See HISTORY file for record of revisions.
|
|
*/
|
|
|
|
/* Includes */
|
|
#include <ctype.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <sys/types.h>
|
|
#include <netinet/in_systm.h>
|
|
#include <netinet/in.h>
|
|
#include <arpa/inet.h>
|
|
#include <netinet/ip.h>
|
|
#include <netinet/udp.h>
|
|
#include <netinet/tcp.h>
|
|
|
|
#include "alias_local.h"
|
|
|
|
typedef struct {
|
|
struct in_addr oldaddr;
|
|
u_short oldport;
|
|
struct in_addr newaddr;
|
|
u_short newport;
|
|
u_short *uh_sum;
|
|
} NBTArguments;
|
|
|
|
typedef struct {
|
|
unsigned char type;
|
|
unsigned char flags;
|
|
u_short id;
|
|
struct in_addr source_ip;
|
|
u_short source_port;
|
|
u_short len;
|
|
u_short offset;
|
|
} NbtDataHeader;
|
|
|
|
#define OpQuery 0
|
|
#define OpUnknown 4
|
|
#define OpRegist 5
|
|
#define OpRelease 6
|
|
#define OpWACK 7
|
|
#define OpRefresh 8
|
|
typedef struct {
|
|
u_short nametrid;
|
|
u_short dir:1, opcode:4, nmflags:7, rcode:4;
|
|
u_short qdcount;
|
|
u_short ancount;
|
|
u_short nscount;
|
|
u_short arcount;
|
|
} NbtNSHeader;
|
|
|
|
#define FMT_ERR 0x1
|
|
#define SRV_ERR 0x2
|
|
#define IMP_ERR 0x4
|
|
#define RFS_ERR 0x5
|
|
#define ACT_ERR 0x6
|
|
#define CFT_ERR 0x7
|
|
|
|
|
|
#ifdef DEBUG
|
|
static void PrintRcode( u_char rcode ) {
|
|
|
|
switch (rcode) {
|
|
case FMT_ERR:
|
|
printf("\nFormat Error.");
|
|
case SRV_ERR:
|
|
printf("\nSever failure.");
|
|
case IMP_ERR:
|
|
printf("\nUnsupported request error.\n");
|
|
case RFS_ERR:
|
|
printf("\nRefused error.\n");
|
|
case ACT_ERR:
|
|
printf("\nActive error.\n");
|
|
case CFT_ERR:
|
|
printf("\nName in conflict error.\n");
|
|
default:
|
|
printf("\n???=%0x\n", rcode );
|
|
|
|
}
|
|
}
|
|
#endif
|
|
|
|
|
|
/* Handling Name field */
|
|
static u_char *AliasHandleName ( u_char *p, char *pmax ) {
|
|
|
|
u_char *s;
|
|
u_char c;
|
|
int compress;
|
|
|
|
/* Following length field */
|
|
|
|
if (p == NULL || (char *)p >= pmax)
|
|
return(NULL);
|
|
|
|
if (*p & 0xc0 ) {
|
|
p = p + 2;
|
|
if ((char *)p > pmax)
|
|
return(NULL);
|
|
return ((u_char *)p);
|
|
}
|
|
while ( ( *p & 0x3f) != 0x00 ) {
|
|
s = p + 1;
|
|
if ( *p == 0x20 )
|
|
compress = 1;
|
|
else
|
|
compress = 0;
|
|
|
|
/* Get next length field */
|
|
p = (u_char *)(p + (*p & 0x3f) + 1);
|
|
if ((char *)p > pmax) {
|
|
p = NULL;
|
|
break;
|
|
}
|
|
#ifdef DEBUG
|
|
printf(":");
|
|
#endif
|
|
while (s < p) {
|
|
if ( compress == 1 ) {
|
|
c = (u_char )(((((*s & 0x0f) << 4) | (*(s+1) & 0x0f)) - 0x11));
|
|
#ifdef DEBUG
|
|
if (isprint( c ) )
|
|
printf("%c", c );
|
|
else
|
|
printf("<0x%02x>", c );
|
|
#endif
|
|
s +=2;
|
|
} else {
|
|
#ifdef DEBUG
|
|
printf("%c", *s);
|
|
#endif
|
|
s++;
|
|
}
|
|
}
|
|
#ifdef DEBUG
|
|
printf(":");
|
|
#endif
|
|
fflush(stdout);
|
|
}
|
|
|
|
/* Set up to out of Name field */
|
|
if (p == NULL || (char *)p >= pmax)
|
|
p = NULL;
|
|
else
|
|
p++;
|
|
return ((u_char *)p);
|
|
}
|
|
|
|
/*
|
|
* NetBios Datagram Handler (IP/UDP)
|
|
*/
|
|
#define DGM_DIRECT_UNIQ 0x10
|
|
#define DGM_DIRECT_GROUP 0x11
|
|
#define DGM_BROADCAST 0x12
|
|
#define DGM_ERROR 0x13
|
|
#define DGM_QUERY 0x14
|
|
#define DGM_POSITIVE_RES 0x15
|
|
#define DGM_NEGATIVE_RES 0x16
|
|
|
|
int AliasHandleUdpNbt(
|
|
struct ip *pip, /* IP packet to examine/patch */
|
|
struct alias_link *link,
|
|
struct in_addr *alias_address,
|
|
u_short alias_port
|
|
) {
|
|
struct udphdr * uh;
|
|
NbtDataHeader *ndh;
|
|
u_char *p = NULL;
|
|
char *pmax;
|
|
|
|
/* Calculate data length of UDP packet */
|
|
uh = (struct udphdr *) ((char *) pip + (pip->ip_hl << 2));
|
|
pmax = (char *)uh + ntohs( uh->uh_ulen );
|
|
|
|
ndh = (NbtDataHeader *)((char *)uh + (sizeof (struct udphdr)));
|
|
if ((char *)(ndh + 1) > pmax)
|
|
return(-1);
|
|
#ifdef DEBUG
|
|
printf("\nType=%02x,", ndh->type );
|
|
#endif
|
|
switch ( ndh->type ) {
|
|
case DGM_DIRECT_UNIQ:
|
|
case DGM_DIRECT_GROUP:
|
|
case DGM_BROADCAST:
|
|
p = (u_char *)ndh + 14;
|
|
p = AliasHandleName ( p, pmax ); /* Source Name */
|
|
p = AliasHandleName ( p, pmax ); /* Destination Name */
|
|
break;
|
|
case DGM_ERROR:
|
|
p = (u_char *)ndh + 11;
|
|
break;
|
|
case DGM_QUERY:
|
|
case DGM_POSITIVE_RES:
|
|
case DGM_NEGATIVE_RES:
|
|
p = (u_char *)ndh + 10;
|
|
p = AliasHandleName ( p, pmax ); /* Destination Name */
|
|
break;
|
|
}
|
|
if (p == NULL || (char *)p > pmax)
|
|
p = NULL;
|
|
#ifdef DEBUG
|
|
printf("%s:%d-->", inet_ntoa(ndh->source_ip), ntohs(ndh->source_port) );
|
|
#endif
|
|
/* Doing a IP address and Port number Translation */
|
|
if ( uh->uh_sum != 0 ) {
|
|
int acc;
|
|
u_short *sptr;
|
|
acc = ndh->source_port;
|
|
acc -= alias_port;
|
|
sptr = (u_short *) &(ndh->source_ip);
|
|
acc += *sptr++;
|
|
acc += *sptr;
|
|
sptr = (u_short *) alias_address;
|
|
acc -= *sptr++;
|
|
acc -= *sptr;
|
|
ADJUST_CHECKSUM(acc, uh->uh_sum);
|
|
}
|
|
ndh->source_ip = *alias_address;
|
|
ndh->source_port = alias_port;
|
|
#ifdef DEBUG
|
|
printf("%s:%d\n", inet_ntoa(ndh->source_ip), ntohs(ndh->source_port) );
|
|
fflush(stdout);
|
|
#endif
|
|
return((p == NULL) ? -1 : 0);
|
|
}
|
|
/* Question Section */
|
|
#define QS_TYPE_NB 0x0020
|
|
#define QS_TYPE_NBSTAT 0x0021
|
|
#define QS_CLAS_IN 0x0001
|
|
typedef struct {
|
|
u_short type; /* The type of Request */
|
|
u_short class; /* The class of Request */
|
|
} NBTNsQuestion;
|
|
|
|
static u_char *
|
|
AliasHandleQuestion(
|
|
u_short count,
|
|
NBTNsQuestion *q,
|
|
char *pmax,
|
|
NBTArguments *nbtarg)
|
|
{
|
|
|
|
while ( count != 0 ) {
|
|
/* Name Filed */
|
|
q = (NBTNsQuestion *)AliasHandleName((u_char *)q, pmax);
|
|
|
|
if (q == NULL || (char *)(q + 1) > pmax) {
|
|
q = NULL;
|
|
break;
|
|
}
|
|
|
|
/* Type and Class filed */
|
|
switch ( ntohs(q->type) ) {
|
|
case QS_TYPE_NB:
|
|
case QS_TYPE_NBSTAT:
|
|
q= q+1;
|
|
break;
|
|
default:
|
|
#ifdef DEBUG
|
|
printf("\nUnknown Type on Question %0x\n", ntohs(q->type) );
|
|
#endif
|
|
break;
|
|
}
|
|
count--;
|
|
}
|
|
|
|
/* Set up to out of Question Section */
|
|
return ((u_char *)q);
|
|
}
|
|
|
|
/* Resource Record */
|
|
#define RR_TYPE_A 0x0001
|
|
#define RR_TYPE_NS 0x0002
|
|
#define RR_TYPE_NULL 0x000a
|
|
#define RR_TYPE_NB 0x0020
|
|
#define RR_TYPE_NBSTAT 0x0021
|
|
#define RR_CLAS_IN 0x0001
|
|
#define SizeOfNsResource 8
|
|
typedef struct {
|
|
u_short type;
|
|
u_short class;
|
|
unsigned int ttl;
|
|
u_short rdlen;
|
|
} NBTNsResource;
|
|
|
|
#define SizeOfNsRNB 6
|
|
typedef struct {
|
|
u_short g:1, ont:2, resv:13;
|
|
struct in_addr addr;
|
|
} NBTNsRNB;
|
|
|
|
static u_char *
|
|
AliasHandleResourceNB(
|
|
NBTNsResource *q,
|
|
char *pmax,
|
|
NBTArguments *nbtarg)
|
|
{
|
|
NBTNsRNB *nb;
|
|
u_short bcount;
|
|
|
|
if (q == NULL || (char *)(q + 1) > pmax)
|
|
return(NULL);
|
|
/* Check out a length */
|
|
bcount = ntohs(q->rdlen);
|
|
|
|
/* Forward to Resource NB position */
|
|
nb = (NBTNsRNB *)((u_char *)q + SizeOfNsResource);
|
|
|
|
/* Processing all in_addr array */
|
|
#ifdef DEBUG
|
|
printf("NB rec[%s", inet_ntoa(nbtarg->oldaddr));
|
|
printf("->%s, %dbytes] ",inet_ntoa(nbtarg->newaddr ), bcount);
|
|
#endif
|
|
while ( nb != NULL && bcount != 0 ) {
|
|
if ((char *)(nb + 1) > pmax) {
|
|
nb = NULL;
|
|
break;
|
|
}
|
|
#ifdef DEBUG
|
|
printf("<%s>", inet_ntoa(nb->addr) );
|
|
#endif
|
|
if (!bcmp(&nbtarg->oldaddr,&nb->addr, sizeof(struct in_addr) ) ) {
|
|
if ( *nbtarg->uh_sum != 0 ) {
|
|
int acc;
|
|
u_short *sptr;
|
|
|
|
sptr = (u_short *) &(nb->addr);
|
|
acc = *sptr++;
|
|
acc += *sptr;
|
|
sptr = (u_short *) &(nbtarg->newaddr);
|
|
acc -= *sptr++;
|
|
acc -= *sptr;
|
|
ADJUST_CHECKSUM(acc, *nbtarg->uh_sum);
|
|
}
|
|
|
|
nb->addr = nbtarg->newaddr;
|
|
#ifdef DEBUG
|
|
printf("O");
|
|
#endif
|
|
}
|
|
#ifdef DEBUG
|
|
else {
|
|
printf(".");
|
|
}
|
|
#endif
|
|
nb=(NBTNsRNB *)((u_char *)nb + SizeOfNsRNB);
|
|
bcount -= SizeOfNsRNB;
|
|
}
|
|
if (nb == NULL || (char *)(nb + 1) > pmax) {
|
|
nb = NULL;
|
|
}
|
|
|
|
return ((u_char *)nb);
|
|
}
|
|
|
|
#define SizeOfResourceA 6
|
|
typedef struct {
|
|
struct in_addr addr;
|
|
} NBTNsResourceA;
|
|
|
|
static u_char *
|
|
AliasHandleResourceA(
|
|
NBTNsResource *q,
|
|
char *pmax,
|
|
NBTArguments *nbtarg)
|
|
{
|
|
NBTNsResourceA *a;
|
|
u_short bcount;
|
|
|
|
if (q == NULL || (char *)(q + 1) > pmax)
|
|
return(NULL);
|
|
|
|
/* Forward to Resource A position */
|
|
a = (NBTNsResourceA *)( (u_char *)q + sizeof(NBTNsResource) );
|
|
|
|
/* Check out of length */
|
|
bcount = ntohs(q->rdlen);
|
|
|
|
/* Processing all in_addr array */
|
|
#ifdef DEBUG
|
|
printf("Arec [%s", inet_ntoa(nbtarg->oldaddr));
|
|
printf("->%s]",inet_ntoa(nbtarg->newaddr ));
|
|
#endif
|
|
while ( bcount != 0 ) {
|
|
if (a == NULL || (char *)(a + 1) > pmax)
|
|
return(NULL);
|
|
#ifdef DEBUG
|
|
printf("..%s", inet_ntoa(a->addr) );
|
|
#endif
|
|
if ( !bcmp(&nbtarg->oldaddr, &a->addr, sizeof(struct in_addr) ) ) {
|
|
if ( *nbtarg->uh_sum != 0 ) {
|
|
int acc;
|
|
u_short *sptr;
|
|
|
|
sptr = (u_short *) &(a->addr); /* Old */
|
|
acc = *sptr++;
|
|
acc += *sptr;
|
|
sptr = (u_short *) &nbtarg->newaddr; /* New */
|
|
acc -= *sptr++;
|
|
acc -= *sptr;
|
|
ADJUST_CHECKSUM(acc, *nbtarg->uh_sum);
|
|
}
|
|
|
|
a->addr = nbtarg->newaddr;
|
|
}
|
|
a++; /*XXXX*/
|
|
bcount -= SizeOfResourceA;
|
|
}
|
|
if (a == NULL || (char *)(a + 1) > pmax)
|
|
a = NULL;
|
|
return ((u_char *)a);
|
|
}
|
|
|
|
typedef struct {
|
|
u_short opcode:4, flags:8, resv:4;
|
|
} NBTNsResourceNULL;
|
|
|
|
static u_char *
|
|
AliasHandleResourceNULL(
|
|
NBTNsResource *q,
|
|
char *pmax,
|
|
NBTArguments *nbtarg)
|
|
{
|
|
NBTNsResourceNULL *n;
|
|
u_short bcount;
|
|
|
|
if (q == NULL || (char *)(q + 1) > pmax)
|
|
return(NULL);
|
|
|
|
/* Forward to Resource NULL position */
|
|
n = (NBTNsResourceNULL *)( (u_char *)q + sizeof(NBTNsResource) );
|
|
|
|
/* Check out of length */
|
|
bcount = ntohs(q->rdlen);
|
|
|
|
/* Processing all in_addr array */
|
|
while ( bcount != 0 ) {
|
|
if ((char *)(n + 1) > pmax) {
|
|
n = NULL;
|
|
break;
|
|
}
|
|
n++;
|
|
bcount -= sizeof(NBTNsResourceNULL);
|
|
}
|
|
if ((char *)(n + 1) > pmax)
|
|
n = NULL;
|
|
|
|
return ((u_char *)n);
|
|
}
|
|
|
|
static u_char *
|
|
AliasHandleResourceNS(
|
|
NBTNsResource *q,
|
|
char *pmax,
|
|
NBTArguments *nbtarg)
|
|
{
|
|
NBTNsResourceNULL *n;
|
|
u_short bcount;
|
|
|
|
if (q == NULL || (char *)(q + 1) > pmax)
|
|
return(NULL);
|
|
|
|
/* Forward to Resource NULL position */
|
|
n = (NBTNsResourceNULL *)( (u_char *)q + sizeof(NBTNsResource) );
|
|
|
|
/* Check out of length */
|
|
bcount = ntohs(q->rdlen);
|
|
|
|
/* Resource Record Name Filed */
|
|
q = (NBTNsResource *)AliasHandleName( (u_char *)n, pmax ); /* XXX */
|
|
|
|
if (q == NULL || (char *)((u_char *)n + bcount) > pmax)
|
|
return(NULL);
|
|
else
|
|
return ((u_char *)n + bcount);
|
|
}
|
|
|
|
typedef struct {
|
|
u_short numnames;
|
|
} NBTNsResourceNBSTAT;
|
|
|
|
static u_char *
|
|
AliasHandleResourceNBSTAT(
|
|
NBTNsResource *q,
|
|
char *pmax,
|
|
NBTArguments *nbtarg)
|
|
{
|
|
NBTNsResourceNBSTAT *n;
|
|
u_short bcount;
|
|
|
|
if (q == NULL || (char *)(q + 1) > pmax)
|
|
return(NULL);
|
|
|
|
/* Forward to Resource NBSTAT position */
|
|
n = (NBTNsResourceNBSTAT *)( (u_char *)q + sizeof(NBTNsResource) );
|
|
|
|
/* Check out of length */
|
|
bcount = ntohs(q->rdlen);
|
|
|
|
if (q == NULL || (char *)((u_char *)n + bcount) > pmax)
|
|
return(NULL);
|
|
else
|
|
return ((u_char *)n + bcount);
|
|
}
|
|
|
|
static u_char *
|
|
AliasHandleResource(
|
|
u_short count,
|
|
NBTNsResource *q,
|
|
char *pmax,
|
|
NBTArguments
|
|
*nbtarg)
|
|
{
|
|
while ( count != 0 ) {
|
|
/* Resource Record Name Filed */
|
|
q = (NBTNsResource *)AliasHandleName( (u_char *)q, pmax );
|
|
|
|
if (q == NULL || (char *)(q + 1) > pmax)
|
|
break;
|
|
#ifdef DEBUG
|
|
printf("type=%02x, count=%d\n", ntohs(q->type), count );
|
|
#endif
|
|
|
|
/* Type and Class filed */
|
|
switch ( ntohs(q->type) ) {
|
|
case RR_TYPE_NB:
|
|
q = (NBTNsResource *)AliasHandleResourceNB(
|
|
q,
|
|
pmax,
|
|
nbtarg
|
|
);
|
|
break;
|
|
case RR_TYPE_A:
|
|
q = (NBTNsResource *)AliasHandleResourceA(
|
|
q,
|
|
pmax,
|
|
nbtarg
|
|
);
|
|
break;
|
|
case RR_TYPE_NS:
|
|
q = (NBTNsResource *)AliasHandleResourceNS(
|
|
q,
|
|
pmax,
|
|
nbtarg
|
|
);
|
|
break;
|
|
case RR_TYPE_NULL:
|
|
q = (NBTNsResource *)AliasHandleResourceNULL(
|
|
q,
|
|
pmax,
|
|
nbtarg
|
|
);
|
|
break;
|
|
case RR_TYPE_NBSTAT:
|
|
q = (NBTNsResource *)AliasHandleResourceNBSTAT(
|
|
q,
|
|
pmax,
|
|
nbtarg
|
|
);
|
|
break;
|
|
default:
|
|
#ifdef DEBUG
|
|
printf(
|
|
"\nUnknown Type of Resource %0x\n",
|
|
ntohs(q->type)
|
|
);
|
|
#endif
|
|
break;
|
|
}
|
|
count--;
|
|
}
|
|
fflush(stdout);
|
|
return ((u_char *)q);
|
|
}
|
|
|
|
int AliasHandleUdpNbtNS(
|
|
struct ip *pip, /* IP packet to examine/patch */
|
|
struct alias_link *link,
|
|
struct in_addr *alias_address,
|
|
u_short *alias_port,
|
|
struct in_addr *original_address,
|
|
u_short *original_port )
|
|
{
|
|
struct udphdr * uh;
|
|
NbtNSHeader * nsh;
|
|
u_char * p;
|
|
char *pmax;
|
|
NBTArguments nbtarg;
|
|
|
|
/* Set up Common Parameter */
|
|
nbtarg.oldaddr = *alias_address;
|
|
nbtarg.oldport = *alias_port;
|
|
nbtarg.newaddr = *original_address;
|
|
nbtarg.newport = *original_port;
|
|
|
|
/* Calculate data length of UDP packet */
|
|
uh = (struct udphdr *) ((char *) pip + (pip->ip_hl << 2));
|
|
nbtarg.uh_sum = &(uh->uh_sum);
|
|
nsh = (NbtNSHeader *)((char *)uh + (sizeof(struct udphdr)));
|
|
p = (u_char *)(nsh + 1);
|
|
pmax = (char *)uh + ntohs( uh->uh_ulen );
|
|
|
|
if ((char *)(nsh + 1) > pmax)
|
|
return(-1);
|
|
|
|
#ifdef DEBUG
|
|
printf(" [%s] ID=%02x, op=%01x, flag=%02x, rcode=%01x, qd=%04x"
|
|
", an=%04x, ns=%04x, ar=%04x, [%d]-->",
|
|
nsh->dir ? "Response": "Request",
|
|
nsh->nametrid,
|
|
nsh->opcode,
|
|
nsh->nmflags,
|
|
nsh->rcode,
|
|
ntohs(nsh->qdcount),
|
|
ntohs(nsh->ancount),
|
|
ntohs(nsh->nscount),
|
|
ntohs(nsh->arcount),
|
|
(u_char *)p -(u_char *)nsh
|
|
);
|
|
#endif
|
|
|
|
/* Question Entries */
|
|
if (ntohs(nsh->qdcount) !=0 ) {
|
|
p = AliasHandleQuestion(
|
|
ntohs(nsh->qdcount),
|
|
(NBTNsQuestion *)p,
|
|
pmax,
|
|
&nbtarg
|
|
);
|
|
}
|
|
|
|
/* Answer Resource Records */
|
|
if (ntohs(nsh->ancount) !=0 ) {
|
|
p = AliasHandleResource(
|
|
ntohs(nsh->ancount),
|
|
(NBTNsResource *)p,
|
|
pmax,
|
|
&nbtarg
|
|
);
|
|
}
|
|
|
|
/* Authority Resource Recodrs */
|
|
if (ntohs(nsh->nscount) !=0 ) {
|
|
p = AliasHandleResource(
|
|
ntohs(nsh->nscount),
|
|
(NBTNsResource *)p,
|
|
pmax,
|
|
&nbtarg
|
|
);
|
|
}
|
|
|
|
/* Additional Resource Recodrs */
|
|
if (ntohs(nsh->arcount) !=0 ) {
|
|
p = AliasHandleResource(
|
|
ntohs(nsh->arcount),
|
|
(NBTNsResource *)p,
|
|
pmax,
|
|
&nbtarg
|
|
);
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
PrintRcode(nsh->rcode);
|
|
#endif
|
|
return ((p == NULL) ? -1 : 0);
|
|
}
|