C++ RES_SET_H_ERRNO函数代码示例

int
gethostent_r(struct hostent* hptr, char* buffer, size_t buflen,
             struct hostent** result, int* h_errnop) {
    struct hostent_data* hed;
    struct hostent he;
    res_state statp;
    statp = __res_state();

    if ((statp->options & RES_INIT) == 0 && res_ninit(statp) == -1) {
        RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
        *h_errnop = statp->res_h_errno;
        return (-1);
    }

    if ((hed = __hostent_data_init()) == NULL) {
        RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
        *h_errnop = statp->res_h_errno;
        return (-1);
    }

    if (gethostent_p(&he, hed, statp->options & RES_USE_INET6, statp) != 0) {
        return (-1);
    }

    if (__copy_hostent(&he, hptr, buffer, buflen) != 0) {
        return (-1);
    }

    *result = hptr;
    return (0);
}

int
_ht_gethostbyaddr(void *rval, void *cb_data, va_list ap)
{
	const void *addr;
	socklen_t len;
	int af;
	char *buffer;
	size_t buflen;
	int *errnop, *h_errnop;
	struct hostent *hptr, he;
	struct hostent_data *hed;
	res_state statp;
	int error;

	addr = va_arg(ap, const void *);
	len = va_arg(ap, socklen_t);
	af = va_arg(ap, int);
	hptr = va_arg(ap, struct hostent *);
	buffer = va_arg(ap, char *);
	buflen = va_arg(ap, size_t);
	errnop = va_arg(ap, int *);
	h_errnop = va_arg(ap, int *);

	*((struct hostent **)rval) = NULL;

	statp = __res_state();
	if ((hed = __hostent_data_init()) == NULL) {
		RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
		*h_errnop = statp->res_h_errno;
		return (NS_NOTFOUND);
	}

	_sethosthtent(0, hed);
	while ((error = gethostent_p(&he, hed, 0, statp)) == 0)
		if (he.h_addrtype == af && !bcmp(he.h_addr, addr, len)) {
			if (he.h_addrtype == AF_INET &&
			    statp->options & RES_USE_INET6) {
				_map_v4v6_address(he.h_addr, he.h_addr);
				he.h_length = IN6ADDRSZ;
				he.h_addrtype = AF_INET6;
			}
			break;
		}
	_endhosthtent(hed);

	if (error != 0)
		return (NS_NOTFOUND);
	if (__copy_hostent(&he, hptr, buffer, buflen) != 0) {
		*errnop = errno;
		RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
		*h_errnop = statp->res_h_errno;
		return (NS_RETURN);
	}
	*((struct hostent **)rval) = hptr;
	return (NS_SUCCESS);
}

static struct netent *
fakeaddr(const char *name, int af, struct net_data *net_data) {
	struct pvt *pvt;
	const char *cp;
	u_long tmp;

	if (af != AF_INET) {
		/* XXX should support IPv6 some day */
		errno = EAFNOSUPPORT;
		RES_SET_H_ERRNO(net_data->res, NETDB_INTERNAL);
		return (NULL);
	}
	if (!isascii((unsigned char)(name[0])) ||
	    !isdigit((unsigned char)(name[0])))
		return (NULL);
	for (cp = name; *cp; ++cp)
		if (!isascii(*cp) || (!isdigit((unsigned char)*cp) && *cp != '.'))
			return (NULL);
	if (*--cp == '.')
		return (NULL);

	/* All-numeric, no dot at the end. */

	tmp = inet_network(name);
	if (tmp == INADDR_NONE) {
		RES_SET_H_ERRNO(net_data->res, HOST_NOT_FOUND);
		return (NULL);
	}

	/* Valid network number specified.
	 * Fake up a netent as if we'd actually
	 * done a lookup.
	 */
	freepvt(net_data);
	net_data->nw_data = malloc(sizeof (struct pvt));
	if (!net_data->nw_data) {
		errno = ENOMEM;
		RES_SET_H_ERRNO(net_data->res, NETDB_INTERNAL);
		return (NULL);
	}
	pvt = net_data->nw_data;

	strncpy(pvt->name, name, MAXDNAME);
	pvt->name[MAXDNAME] = '\0';
	pvt->netent.n_name = pvt->name;
	pvt->netent.n_addrtype = AF_INET;
	pvt->netent.n_aliases = pvt->aliases;
	pvt->aliases[0] = NULL;
	pvt->netent.n_net = tmp;

	return (&pvt->netent);
}

int
_ht_getnetbyname(void *rval, void *cb_data, va_list ap)
{
	const char *name;
	char *buffer;
	size_t buflen;
	int *errnop, *h_errnop;
	struct netent *nptr, ne;
	struct netent_data *ned;
	char **cp;
	res_state statp;
	int error;

	name = va_arg(ap, const char *);
	nptr = va_arg(ap, struct netent *);
	buffer = va_arg(ap, char *);
	buflen = va_arg(ap, size_t);
	errnop = va_arg(ap, int *);
	h_errnop = va_arg(ap, int *);

	statp = __res_state();
	if ((ned = __netent_data_init()) == NULL) {
		RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
		*h_errnop = statp->res_h_errno;
		return (NS_UNAVAIL);
	}

	_setnethtent(ned->stayopen, ned);
	while ((error = getnetent_p(&ne, ned)) == 0) {
		if (strcasecmp(ne.n_name, name) == 0)
			break;
		for (cp = ne.n_aliases; *cp != 0; cp++)
			if (strcasecmp(*cp, name) == 0)
				goto found;
	}
found:
	if (!ned->stayopen)
		_endnethtent(ned);
	if (error != 0) {
		*h_errnop = statp->res_h_errno;
		return (NS_NOTFOUND);
	}
	if (__copy_netent(&ne, nptr, buffer, buflen) != 0) {
		*errnop = errno;
		RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
		*h_errnop = statp->res_h_errno;
		return (NS_RETURN);
	}
	*((struct netent **)rval) = nptr;
	return (NS_SUCCESS);
}

int
_nis_gethostbyaddr(void *rval, void *cb_data, va_list ap)
{
#ifdef YP
	const void *addr;
	socklen_t len;
	int af;
	char *buffer;
	size_t buflen;
	int *errnop, *h_errnop;
	struct hostent *hptr, he;
	struct hostent_data *hed;
	res_state statp;

	addr = va_arg(ap, const void *);
	len = va_arg(ap, socklen_t);
	af = va_arg(ap, int);
	hptr = va_arg(ap, struct hostent *);
	buffer = va_arg(ap, char *);
	buflen = va_arg(ap, size_t);
	errnop = va_arg(ap, int *);
	h_errnop = va_arg(ap, int *);

	*((struct hostent **)rval) = NULL;

	statp = __res_state();
	if ((hed = __hostent_data_init()) == NULL) {
		RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
		*h_errnop = statp->res_h_errno;
		return (NS_NOTFOUND);
	}

	if (_gethostbynisaddr_r(addr, len, af, &he, hed) != 0) {
		*h_errnop = statp->res_h_errno;
		return (NS_NOTFOUND);
	}
	if (__copy_hostent(&he, hptr, buffer, buflen) != 0) {
		*errnop = errno;
		RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
		*h_errnop = statp->res_h_errno;
		return (NS_RETURN);
	}
	*((struct hostent **)rval) = hptr;
	return (NS_SUCCESS);
#else
	*((struct hostent **)rval) = NULL;
	return (NS_UNAVAIL);
#endif
}

struct hostent *
_gethostbynisaddr(const void *addr, socklen_t len, int af)
{
#ifdef YP
	struct hostent *he;
	struct hostent_data *hed;
	u_long oresopt;
	int error;
	res_state statp;

	statp = __res_state();
	if ((he = __hostent_init()) == NULL ||
	    (hed = __hostent_data_init()) == NULL) {
		RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
		return (NULL);
	}

	oresopt = statp->options;
	statp->options &= ~RES_USE_INET6;
	error = _gethostbynisaddr_r(addr, len, af, he, hed);
	statp->options = oresopt;
	return (error == 0) ? he : NULL;
#else
	return (NULL);
#endif
}

int
_ht_getnetbyaddr(void *rval, void *cb_data, va_list ap)
{
	uint32_t net;
	int type;
	char *buffer;
	size_t buflen;
	int *errnop, *h_errnop;
	struct netent *nptr, ne;
	struct netent_data *ned;
	res_state statp;
	int error;

	net = va_arg(ap, uint32_t);
	type = va_arg(ap, int);
	nptr = va_arg(ap, struct netent *);
	buffer = va_arg(ap, char *);
	buflen = va_arg(ap, size_t);
	errnop = va_arg(ap, int *);
	h_errnop = va_arg(ap, int *);

	statp = __res_state();
	if ((ned = __netent_data_init()) == NULL) {
		RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
		*h_errnop = statp->res_h_errno;
		return (NS_UNAVAIL);
	}

	_setnethtent(ned->stayopen, ned);
	while ((error = getnetent_p(&ne, ned)) == 0)
		if (ne.n_addrtype == type && ne.n_net == net)
			break;
	if (!ned->stayopen)
		_endnethtent(ned);
	if (error != 0) {
		*h_errnop = statp->res_h_errno;
		return (NS_NOTFOUND);
	}
	if (__copy_netent(&ne, nptr, buffer, buflen) != 0) {
		*errnop = errno;
		RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
		*h_errnop = statp->res_h_errno;
		return (NS_RETURN);
	}
	*((struct netent **)rval) = nptr;
	return (NS_SUCCESS);
}

int
_nis_getnetbyname(void *rval, void *cb_data, va_list ap)
{
#ifdef YP
	const char *name;
	char *buffer;
	size_t buflen;
	int *errnop, *h_errnop;
	struct netent *nptr, ne;
	struct netent_data *ned;
	res_state statp;

	name = va_arg(ap, const char *);
	nptr = va_arg(ap, struct netent *);
	buffer = va_arg(ap, char *);
	buflen = va_arg(ap, size_t);
	errnop = va_arg(ap, int *);
	h_errnop = va_arg(ap, int *);

	statp = __res_state();
	if ((ned = __netent_data_init()) == NULL) {
		RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
		*h_errnop = statp->res_h_errno;
		return (NS_UNAVAIL);
	}

	if (_getnetbynis(name, "networks.byname", AF_INET, &ne, ned) != 0) {
		*h_errnop = statp->res_h_errno;
		return (NS_NOTFOUND);
	}
	if (__copy_netent(&ne, nptr, buffer, buflen) != 0) {
		*errnop = errno;
		RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
		*h_errnop = statp->res_h_errno;
		return (NS_RETURN);
	}
	*((struct netent **)rval) = nptr;
	return (NS_SUCCESS);
#else
	return (NS_UNAVAIL);
#endif

}

int
getnetent_r(struct netent *nptr, char *buffer, size_t buflen,
    struct netent **result, int *h_errnop)
{
	struct netent_data *ned;
	struct netent ne;
	res_state statp;

	statp = __res_state();
	if ((ned = __netent_data_init()) == NULL) {
		RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
		*h_errnop = statp->res_h_errno;
		return (-1);
	}
	if (getnetent_p(&ne, ned) != 0)
		return (-1);
	if (__copy_netent(&ne, nptr, buffer, buflen) != 0) {
		RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
		*h_errnop = statp->res_h_errno;
		return ((errno != 0) ? errno : -1);
	}
	*result = nptr;
	return (0);
}

static struct net_data *
init() {
	struct net_data *net_data;

	if (!(net_data = net_data_init(NULL)))
		goto error;
	if (!net_data->ho) {
		net_data->ho = (*net_data->irs->ho_map)(net_data->irs);
		if (!net_data->ho || !net_data->res) {
  error:
			errno = EIO;
			if (net_data && net_data->res)
				RES_SET_H_ERRNO(net_data->res, NETDB_INTERNAL);
			return (NULL);
		}
	
		(*net_data->ho->res_set)(net_data->ho, net_data->res, NULL);
	}
	
	return (net_data);
}

static struct netent *
nw_to_net(struct nwent *nwent, struct net_data *net_data) {
	struct pvt *pvt;
	u_long addr = 0;
	int i;
	int msbyte;

	if (!nwent || nwent->n_addrtype != AF_INET)
		return (NULL);
	freepvt(net_data);
	net_data->nw_data = malloc(sizeof (struct pvt));
	if (!net_data->nw_data) {
		errno = ENOMEM;
		RES_SET_H_ERRNO(net_data->res, NETDB_INTERNAL);
		return (NULL);
	}
	pvt = net_data->nw_data;
	pvt->netent.n_name = nwent->n_name;
	pvt->netent.n_aliases = nwent->n_aliases;
	pvt->netent.n_addrtype = nwent->n_addrtype;

/*
 * What this code does: Converts net addresses from network to host form.
 *
 * msbyte: the index of the most significant byte in the n_addr array.
 *
 * Shift bytes in significant order into addr. When all signicant
 * bytes are in, zero out bits in the LSB that are not part of the network.
 */
	msbyte = nwent->n_length / 8 +
		((nwent->n_length % 8) != 0 ? 1 : 0) - 1;
	for (i = 0; i <= msbyte; i++)
		addr = (addr << 8) | ((unsigned char *)nwent->n_addr)[i];
	i = (32 - nwent->n_length) % 8;
	if (i != 0)
		addr &= ~((1 << (i + 1)) - 1);
	pvt->netent.n_net = addr;
	return (&pvt->netent);
}

static int
_getnetbynis(const char *name, char *map, int af, struct netent *ne,
    struct netent_data *ned)
{
	char *p, *bp, *ep;
	char *cp, **q;
	char *result;
	int resultlen, len;
	char ypbuf[YPMAXRECORD + 2];

	switch(af) {
	case AF_INET:
		break;
	default:
	case AF_INET6:
		errno = EAFNOSUPPORT;
		return (-1);
	}

	if (ned->yp_domain == (char *)NULL)
		if (yp_get_default_domain (&ned->yp_domain))
			return (-1);

	if (yp_match(ned->yp_domain, map, name, strlen(name), &result,
	    &resultlen))
		return (-1);

	bcopy((char *)result, (char *)&ypbuf, resultlen);
	ypbuf[resultlen] = '\0';
	free(result);
	result = (char *)&ypbuf;

	if ((cp = index(result, '\n')))
		*cp = '\0';

	cp = strpbrk(result, " \t");
	*cp++ = '\0';
	bp = ned->netbuf;
	ep = ned->netbuf + sizeof ned->netbuf;
	len = strlen(result) + 1;
	if (ep - bp < len) {
		RES_SET_H_ERRNO(__res_state(), NO_RECOVERY);
		return (-1);
	}
	strlcpy(bp, result, ep - bp);
	ne->n_name = bp;
	bp += len;

	while (*cp == ' ' || *cp == '\t')
		cp++;

	ne->n_net = inet_network(cp);
	ne->n_addrtype = AF_INET;

	q = ne->n_aliases = ned->net_aliases;
	cp = strpbrk(cp, " \t");
	if (cp != NULL)
		*cp++ = '\0';
	while (cp && *cp) {
		if (*cp == ' ' || *cp == '\t') {
			cp++;
			continue;
		}
		if (q > &ned->net_aliases[_MAXALIASES - 1])
			break;
		p = strpbrk(cp, " \t");
		if (p != NULL)
			*p++ = '\0';
		len = strlen(cp) + 1;
		if (ep - bp < len)
			break;
		strlcpy(bp, cp, ep - bp);
		*q++ = bp;
		bp += len;
		cp = p;
	}
	*q = NULL;
	return (0);
}

int
_nis_getnetbyaddr(void *rval, void *cb_data, va_list ap)
{
#ifdef YP
	uint32_t addr;
	int af;
	char *buffer;
	size_t buflen;
	int *errnop, *h_errnop;
	struct netent *nptr, ne;
	struct netent_data *ned;
	char *str, *cp;
	uint32_t net2;
	int nn;
	unsigned int netbr[4];
	char buf[MAXDNAME];
	res_state statp;

	addr = va_arg(ap, uint32_t);
	af = va_arg(ap, int);
	nptr = va_arg(ap, struct netent *);
	buffer = va_arg(ap, char *);
	buflen = va_arg(ap, size_t);
	errnop = va_arg(ap, int *);
	h_errnop = va_arg(ap, int *);

	statp = __res_state();
	if ((ned = __netent_data_init()) == NULL) {
		RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
		*h_errnop = statp->res_h_errno;
		return (NS_UNAVAIL);
	}

	if (af != AF_INET) {
		RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
		*h_errnop = statp->res_h_errno;
		errno = EAFNOSUPPORT;
		return (NS_UNAVAIL);
	}

        for (nn = 4, net2 = addr; net2; net2 >>= 8) {
                netbr[--nn] = net2 & 0xff;
	}

	switch (nn) {
	case 3:		/* Class A */
		sprintf(buf, "%u", netbr[3]);
		break;
        case 2:		/* Class B */
		sprintf(buf, "%u.%u", netbr[2], netbr[3]);
		break;
        case 1:		/* Class C */
		sprintf(buf, "%u.%u.%u", netbr[1], netbr[2], netbr[3]);
                break;
        case 0:		/* Class D - E */
		sprintf(buf, "%u.%u.%u.%u", netbr[0], netbr[1],
			netbr[2], netbr[3]);
		break;
	}

	str = (char *)&buf;
	cp = str + (strlen(str) - 2);

	while(!strcmp(cp, ".0")) {
		*cp = '\0';
		cp = str + (strlen(str) - 2);
	}

	if (_getnetbynis(str, "networks.byaddr", af, &ne, ned) != 0) {
		*h_errnop = statp->res_h_errno;
		return (NS_NOTFOUND);
	}
	if (__copy_netent(&ne, nptr, buffer, buflen) != 0) {
		*errnop = errno;
		RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
		*h_errnop = statp->res_h_errno;
		return (NS_RETURN);
	}
	*((struct netent **)rval) = nptr;
	return (NS_SUCCESS);
#else
	return (NS_UNAVAIL);
#endif /* YP */
}

int
res_nupdate(res_state statp, ns_updrec *rrecp_in, ns_tsig_key *key) {
	ns_updrec *rrecp;
	u_char answer[PACKETSZ];
	u_char *packet;
	struct zonegrp *zptr, tgrp;
	LIST(struct zonegrp) zgrps;
	int nzones = 0, nscount = 0, n;
	union res_sockaddr_union nsaddrs[MAXNS];

	packet = malloc(NS_MAXMSG);
	if (packet == NULL) {
		DPRINTF(("malloc failed"));
		return (0);
	}
	/* Thread all of the updates onto a list of groups. */
	INIT_LIST(zgrps);
	memset(&tgrp, 0, sizeof (tgrp));
	for (rrecp = rrecp_in; rrecp;
	     rrecp = LINKED(rrecp, r_link) ? NEXT(rrecp, r_link) : NULL) {
		int nscnt;
		/* Find the origin for it if there is one. */
		tgrp.z_class = rrecp->r_class;
		nscnt = res_findzonecut2(statp, rrecp->r_dname, tgrp.z_class,
					 RES_EXHAUSTIVE, tgrp.z_origin,
					 sizeof tgrp.z_origin, 
					 tgrp.z_nsaddrs, MAXNS);
		if (nscnt <= 0) {
			DPRINTF(("res_findzonecut failed (%d)", nscnt));
			goto done;
		}
		tgrp.z_nscount = nscnt;
		/* Find the group for it if there is one. */
		for (zptr = HEAD(zgrps); zptr != NULL; zptr = NEXT(zptr, z_link))
			if (ns_samename(tgrp.z_origin, zptr->z_origin) == 1 &&
			    tgrp.z_class == zptr->z_class)
				break;
		/* Make a group for it if there isn't one. */
		if (zptr == NULL) {
			zptr = malloc(sizeof *zptr);
			if (zptr == NULL) {
				DPRINTF(("malloc failed"));
				goto done;
			}
			*zptr = tgrp;
			zptr->z_flags = 0;
			INIT_LINK(zptr, z_link);
			INIT_LIST(zptr->z_rrlist);
			APPEND(zgrps, zptr, z_link);
		}
		/* Thread this rrecp onto the right group. */
		APPEND(zptr->z_rrlist, rrecp, r_glink);
	}

	for (zptr = HEAD(zgrps); zptr != NULL; zptr = NEXT(zptr, z_link)) {
		/* Construct zone section and prepend it. */
		rrecp = res_mkupdrec(ns_s_zn, zptr->z_origin,
				     zptr->z_class, ns_t_soa, 0);
		if (rrecp == NULL) {
			DPRINTF(("res_mkupdrec failed"));
			goto done;
		}
		PREPEND(zptr->z_rrlist, rrecp, r_glink);
		zptr->z_flags |= ZG_F_ZONESECTADDED;

		/* Marshall the update message. */
		n = res_nmkupdate(statp, HEAD(zptr->z_rrlist),
				  packet, NS_MAXMSG);
		DPRINTF(("res_mkupdate -> %d", n));
		if (n < 0)
			goto done;

		/* Temporarily replace the resolver's nameserver set. */
		nscount = res_getservers(statp, nsaddrs, MAXNS);
		res_setservers(statp, zptr->z_nsaddrs, zptr->z_nscount);

		/* Send the update and remember the result. */
		if (key != NULL) {
#ifdef _LIBC
			DPRINTF(("TSIG is not supported\n"));
			RES_SET_H_ERRNO(statp, NO_RECOVERY);
			goto done;
#else
			n = res_nsendsigned(statp, packet, n, key,
					    answer, sizeof answer);
#endif
		} else
			n = res_nsend(statp, packet, n, answer, sizeof answer);
		if (n < 0) {
			DPRINTF(("res_nsend: send error, n=%d (%s)\n",
				 n, strerror(errno)));
			goto done;
		}
		if (((HEADER *)answer)->rcode == NOERROR)
			nzones++;

		/* Restore resolver's nameserver set. */
		res_setservers(statp, nsaddrs, nscount);
		nscount = 0;
	}
//.........这里部分代码省略.........

static int
getnetent_p(struct netent *ne, struct netent_data *ned)
{
	char *p, *bp, *ep;
	char *cp, **q;
	int len;
	char line[BUFSIZ + 1];

	if (ned->netf == NULL &&
	    (ned->netf = fopen(_PATH_NETWORKS, "r")) == NULL)
		return (-1);
again:
	p = fgets(line, sizeof line, ned->netf);
	if (p == NULL)
		return (-1);
	if (*p == '#')
		goto again;
	cp = strpbrk(p, "#\n");
	if (cp != NULL)
		*cp = '\0';
	bp = ned->netbuf;
	ep = ned->netbuf + sizeof ned->netbuf;
	ne->n_name = bp;
	cp = strpbrk(p, " \t");
	if (cp == NULL)
		goto again;
	*cp++ = '\0';
	len = strlen(p) + 1;
	if (ep - bp < len) {
		RES_SET_H_ERRNO(__res_state(), NO_RECOVERY);
		return (-1);
	}
	strlcpy(bp, p, ep - bp);
	bp += len;
	while (*cp == ' ' || *cp == '\t')
		cp++;
	p = strpbrk(cp, " \t");
	if (p != NULL)
		*p++ = '\0';
	ne->n_net = inet_network(cp);
	ne->n_addrtype = AF_INET;
	q = ne->n_aliases = ned->net_aliases;
	if (p != NULL) {
		cp = p;
		while (cp && *cp) {
			if (*cp == ' ' || *cp == '\t') {
				cp++;
				continue;
			}
			if (q >= &ned->net_aliases[_MAXALIASES - 1])
				break;
			p = strpbrk(cp, " \t");
			if (p != NULL)
				*p++ = '\0';
			len = strlen(cp) + 1;
			if (ep - bp < len)
				break;
			strlcpy(bp, cp, ep - bp);
			*q++ = bp;
			bp += len;
			cp = p;
		}
	}
	*q = NULL;
	return (0);
}