in.rwhod.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2002 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Portions of this source code were derived from Berkeley 4.3 BSD
* under license from the Regents of the University of California.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/types.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/file.h>
#include <sys/loadavg.h>
#include <net/if.h>
#include <netinet/in.h>
#include <stdio.h>
#include <signal.h>
#include <errno.h>
#include <utmpx.h>
#include <ctype.h>
#include <netdb.h>
#include <syslog.h>
#include <fcntl.h>
#include <sys/isa_defs.h> /* for ENDIAN defines */
#include <arpa/inet.h>
#include <protocols/rwhod.h>
#include <strings.h>
#include <stdlib.h>
#include <unistd.h>
/*
* This version of Berkeley's rwhod has been modified to use IP multicast
* datagrams, under control of a new command-line option:
*
* rwhod -m causes rwhod to use IP multicast (instead of
* broadcast or unicast) on all interfaces that have
* the IFF_MULTICAST flag set in their "ifnet" structs
* (excluding the loopback interface). The multicast
* reports are sent with a time-to-live of 1, to prevent
* forwarding beyond the directly-connected subnet(s).
*
* rwhod -m <ttl> causes rwhod to send IP multicast datagrams with a
* time-to-live of <ttl>, via a SINGLE interface rather
* than all interfaces. <ttl> must be between 0 and
* MAX_MULTICAST_SCOPE, defined below. Note that "-m 1"
* is different than "-m", in that "-m 1" specifies
* transmission on one interface only.
*
* When "-m" is used without a <ttl> argument, the program accepts multicast
* rwhod reports from all multicast-capable interfaces. If a <ttl> argument
* is given, it accepts multicast reports from only one interface, the one
* on which reports are sent (which may be controlled via the host's routing
* table). Regardless of the "-m" option, the program accepts broadcast or
* unicast reports from all interfaces. Thus, this program will hear the
* reports of old, non-multicasting rwhods, but, if multicasting is used,
* those old rwhods won't hear the reports generated by this program.
*
* -- Steve Deering, Stanford University, February 1989
*/
#define NO_MULTICAST 0 /* multicast modes */
#define PER_INTERFACE_MULTICAST 1
#define SCOPED_MULTICAST 2
#define MAX_MULTICAST_SCOPE 32 /* "site-wide", by convention */
#define INADDR_WHOD_GROUP (ulong_t)0xe0000103 /* 224.0.1.3 */
/* (belongs in protocols/rwhod.h) */
static int multicast_mode = NO_MULTICAST;
static int multicast_scope;
static struct sockaddr_in multicast_addr = { AF_INET };
/*
* Alarm interval. Don't forget to change the down time check in ruptime
* if this is changed.
*/
#define AL_INTERVAL (3 * 60)
static struct sockaddr_in sin = { AF_INET };
static char myname[MAXHOSTNAMELEN];
/*
* We communicate with each neighbor in
* a list constructed at the time we're
* started up. Neighbors are currently
* directly connected via a hardware interface.
*/
struct neighbor {
struct neighbor *n_next;
char *n_name; /* interface name */
char *n_addr; /* who to send to */
int n_addrlen; /* size of address */
ulong_t n_subnet; /* AF_INET subnet */
uint_t n_flags; /* should forward?, interface flags */
};
static struct neighbor *neighbors;
static struct whod mywd;
static struct servent *sp;
static int s;
#define WHDRSIZE (sizeof (mywd) - sizeof (mywd.wd_we))
#define RWHODIR "/var/spool/rwho"
static void onalrm(void);
static void getkmem(void);
static boolean_t configure(int);
static int verify(const struct whod *);
void
main(int argc, char *argv[])
{
struct sockaddr_in from;
struct stat st;
char path[64];
struct hostent *hp;
int on = 1;
char *cp;
struct stat sb;
if (getuid()) {
(void) fprintf(stderr, "in.rwhod: not super user\n");
exit(1);
}
sp = getservbyname("who", "udp");
if (sp == NULL) {
(void) fprintf(stderr, "in.rwhod: udp/who: unknown service\n");
exit(1);
}
argv++;
argc--;
while (argc > 0 && *argv[0] == '-') {
if (strcmp(*argv, "-m") == 0) {
if (argc > 1 && isdigit(*(argv + 1)[0])) {
argv++;
argc--;
multicast_mode = SCOPED_MULTICAST;
multicast_scope = atoi(*argv);
if (multicast_scope > MAX_MULTICAST_SCOPE) {
(void) fprintf(stderr,
"in.rwhod: "
"ttl must not exceed %u\n",
MAX_MULTICAST_SCOPE);
exit(1);
}
} else {
multicast_mode = PER_INTERFACE_MULTICAST;
}
} else {
goto usage;
}
argv++;
argc--;
}
if (argc > 0)
goto usage;
if (chdir(RWHODIR) < 0) {
perror(RWHODIR);
exit(1);
}
#ifndef DEBUG
if (fork())
exit(0);
/* CSTYLED */
{
(void) close(0);
(void) close(1);
(void) close(2);
(void) open("/", 0);
(void) dup2(0, 1);
(void) dup2(0, 2);
(void) setsid();
}
#endif
(void) sigset(SIGHUP, (void (*)())getkmem);
openlog("in.rwhod", LOG_PID, LOG_DAEMON);
/*
* Establish host name as returned by system.
*/
if (gethostname(myname, sizeof (myname) - 1) < 0) {
syslog(LOG_ERR, "main: gethostname: %m");
exit(1);
}
if ((cp = index(myname, '.')) != NULL)
*cp = '\0';
(void) strlcpy(mywd.wd_hostname, myname, sizeof (mywd.wd_hostname));
if (stat(UTMPX_FILE, &sb) < 0) {
syslog(LOG_ERR, "main: stat: %s: %m", UTMPX_FILE);
exit(1);
}
getkmem();
if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
syslog(LOG_ERR, "main: socket: %m");
exit(1);
}
if (setsockopt(s, SOL_SOCKET, SO_BROADCAST, &on, sizeof (on)) < 0) {
syslog(LOG_ERR, "main: setsockopt SO_BROADCAST: %m");
exit(1);
}
hp = gethostbyname(myname);
if (hp == NULL) {
syslog(LOG_ERR, "main: %s: don't know my own name\n", myname);
exit(1);
}
sin.sin_family = hp->h_addrtype;
sin.sin_port = sp->s_port;
if (bind(s, (struct sockaddr *)&sin, sizeof (sin)) < 0) {
syslog(LOG_ERR, "main: bind: %m");
exit(1);
}
if (!configure(s))
exit(1);
(void) sigset(SIGALRM, (void (*)())onalrm);
onalrm();
for (;;) {
struct whod wd;
int cc, whod;
socklen_t len = sizeof (from);
cc = recvfrom(s, &wd, sizeof (struct whod), 0,
(struct sockaddr *)&from, &len);
if (cc <= 0) {
if (cc < 0 && errno != EINTR)
syslog(LOG_WARNING, "main: recvfrom: %m");
continue;
}
if (from.sin_port != sp->s_port) {
syslog(LOG_WARNING, "main: %d: bad from port",
ntohs(from.sin_port));
continue;
}
#ifdef notdef
if (gethostbyname(wd.wd_hostname) == 0) {
syslog(LOG_WARNING, "main: %s: unknown host",
wd.wd_hostname);
continue;
}
#endif
if (wd.wd_vers != WHODVERSION)
continue;
if (wd.wd_type != WHODTYPE_STATUS)
continue;
if (!verify(&wd)) {
syslog(LOG_WARNING, "main: malformed host name from %x",
from.sin_addr.s_addr);
continue;
}
(void) sprintf(path, "whod.%s", wd.wd_hostname);
/*
* Rather than truncating and growing the file each time,
* use ftruncate if size is less than previous size.
*/
whod = open(path, O_WRONLY | O_CREAT, 0644);
if (whod < 0) {
syslog(LOG_WARNING, "main: open: %s: %m", path);
continue;
}
#if defined(_LITTLE_ENDIAN)
/* CSTYLED */
{
int i, n = (cc - WHDRSIZE)/sizeof (struct whoent);
struct whoent *we;
/* undo header byte swapping before writing to file */
wd.wd_sendtime = ntohl(wd.wd_sendtime);
for (i = 0; i < 3; i++)
wd.wd_loadav[i] = ntohl(wd.wd_loadav[i]);
wd.wd_boottime = ntohl(wd.wd_boottime);
we = wd.wd_we;
for (i = 0; i < n; i++) {
we->we_idle = ntohl(we->we_idle);
we->we_utmp.out_time =
ntohl(we->we_utmp.out_time);
we++;
}
}
#endif
(void) time((time_t *)&wd.wd_recvtime);
(void) write(whod, &wd, cc);
if (fstat(whod, &st) < 0 || st.st_size > cc)
(void) ftruncate(whod, cc);
(void) close(whod);
}
/* NOTREACHED */
usage:
(void) fprintf(stderr, "usage: in.rwhod [ -m [ ttl ] ]\n");
exit(1);
}
/*
* Check out host name for unprintables
* and other funnies before allowing a file
* to be created. Sorry, but blanks aren't allowed.
*/
static int
verify(const struct whod *wd)
{
int size = 0;
const char *name = wd->wd_hostname;
/*
* We shouldn't assume the name is NUL terminated, so bound the
* checks at the size of the whod structures wd_hostname field.
*/
while ((size < sizeof (wd->wd_hostname)) &&
(*name != '\0')) {
if (*name == '/' || !isascii(*name) ||
!(isalnum(*name) || ispunct(*name)))
return (0);
name++, size++;
}
/*
* Fail the verification if NULL name or it wasn't NUL terminated.
*/
return ((size > 0) && (size < sizeof (wd->wd_hostname)));
}
static int utmpxtime;
static int utmpxent;
static int alarmcount;
struct utmpx *utmpx;
static void
onalrm(void)
{
int i;
struct stat stb;
int utmpxsize = 0;
int entries;
struct utmpx *utp;
struct utmpx *utmpxbegin;
struct whoent *we = mywd.wd_we, *wlast;
int cc, cnt;
double avenrun[3];
time_t now = time(0);
struct neighbor *np;
if (alarmcount % 10 == 0)
getkmem();
alarmcount++;
(void) stat(UTMPX_FILE, &stb);
entries = stb.st_size / sizeof (struct futmpx);
if ((stb.st_mtime != utmpxtime) || (entries > utmpxent)) {
utmpxtime = stb.st_mtime;
if (entries > utmpxent) {
utmpxent = entries;
utmpxsize = utmpxent * sizeof (struct utmpx);
utmpx = realloc(utmpx, utmpxsize);
if (utmpx == NULL) {
syslog(LOG_ERR, "onalrm: realloc: %m");
utmpxsize = 0;
goto done;
}
}
utmpxbegin = utmpx;
setutxent();
cnt = 0;
while (cnt++ < utmpxent && (utp = getutxent()) != NULL)
(void) memcpy(utmpxbegin++, utp, sizeof (struct utmpx));
endutxent();
wlast = &mywd.wd_we[1024 / sizeof (struct whoent) - 1];
for (i = 0; i < utmpxent; i++) {
if (utmpx[i].ut_name[0] &&
utmpx[i].ut_type == USER_PROCESS) {
/*
* XXX - utmpx name and line lengths should
* be here
*/
bcopy(utmpx[i].ut_line, we->we_utmp.out_line,
sizeof (we->we_utmp.out_line));
bcopy(utmpx[i].ut_name, we->we_utmp.out_name,
sizeof (we->we_utmp.out_name));
we->we_utmp.out_time =
htonl(utmpx[i].ut_xtime);
if (we >= wlast)
break;
we++;
}
}
utmpxent = we - mywd.wd_we;
}
/*
* The test on utmpxent looks silly---after all, if no one is
* logged on, why worry about efficiency?---but is useful on
* (e.g.) compute servers.
*/
if (utmpxent > 0 && chdir("/dev") == -1) {
syslog(LOG_ERR, "onalrm: chdir /dev: %m");
exit(1);
}
we = mywd.wd_we;
for (i = 0; i < utmpxent; i++) {
if (stat(we->we_utmp.out_line, &stb) >= 0)
we->we_idle = htonl(now - stb.st_atime);
we++;
}
if (getloadavg(avenrun, 3) == -1) {
syslog(LOG_ERR, "onalrm: getloadavg: %m");
exit(1);
}
for (i = 0; i < 3; i++)
mywd.wd_loadav[i] = htonl((ulong_t)(avenrun[i] * 100));
cc = (char *)we - (char *)&mywd;
mywd.wd_sendtime = htonl(time(0));
mywd.wd_vers = WHODVERSION;
mywd.wd_type = WHODTYPE_STATUS;
if (multicast_mode == SCOPED_MULTICAST) {
(void) sendto(s, &mywd, cc, 0,
(struct sockaddr *)&multicast_addr,
sizeof (multicast_addr));
} else for (np = neighbors; np != NULL; np = np->n_next) {
if (multicast_mode == PER_INTERFACE_MULTICAST &&
np->n_flags & IFF_MULTICAST) {
/*
* Select the outgoing interface for the multicast.
*/
if (setsockopt(s, IPPROTO_IP, IP_MULTICAST_IF,
&(((struct sockaddr_in *)np->n_addr)->sin_addr),
sizeof (struct in_addr)) < 0) {
syslog(LOG_ERR,
"onalrm: setsockopt IP_MULTICAST_IF: %m");
exit(1);
}
(void) sendto(s, &mywd, cc, 0,
(struct sockaddr *)&multicast_addr,
sizeof (multicast_addr));
} else {
(void) sendto(s, &mywd, cc, 0,
(struct sockaddr *)np->n_addr, np->n_addrlen);
}
}
if (utmpxent > 0 && chdir(RWHODIR) == -1) {
syslog(LOG_ERR, "onalrm: chdir %s: %m", RWHODIR);
exit(1);
}
done:
(void) alarm(AL_INTERVAL);
}
static void
getkmem(void)
{
struct utmpx *utmpx, utmpx_id;
utmpx_id.ut_type = BOOT_TIME;
if ((utmpx = getutxid(&utmpx_id)) != NULL)
mywd.wd_boottime = utmpx->ut_xtime;
endutxent();
mywd.wd_boottime = htonl(mywd.wd_boottime);
}
/*
* Figure out device configuration and select
* networks which deserve status information.
*/
static boolean_t
configure(int s)
{
char *buf;
struct ifconf ifc;
struct ifreq ifreq, *ifr;
struct sockaddr_in *sin;
struct neighbor *np;
struct neighbor *np2;
int n;
int numifs;
unsigned bufsize;
if (multicast_mode == SCOPED_MULTICAST) {
struct ip_mreq mreq;
unsigned char ttl;
mreq.imr_multiaddr.s_addr = htonl(INADDR_WHOD_GROUP);
mreq.imr_interface.s_addr = htonl(INADDR_ANY);
if (setsockopt(s, IPPROTO_IP, IP_ADD_MEMBERSHIP, &mreq,
sizeof (mreq)) < 0) {
syslog(LOG_ERR,
"configure: setsockopt IP_ADD_MEMBERSHIP: %m");
return (B_FALSE);
}
ttl = multicast_scope;
if (setsockopt(s, IPPROTO_IP, IP_MULTICAST_TTL, &ttl,
sizeof (ttl)) < 0) {
syslog(LOG_ERR,
"configure: setsockopt IP_MULTICAST_TTL: %m");
return (B_FALSE);
}
multicast_addr.sin_addr.s_addr = htonl(INADDR_WHOD_GROUP);
multicast_addr.sin_port = sp->s_port;
return (B_TRUE);
}
if (ioctl(s, SIOCGIFNUM, (char *)&numifs) < 0) {
syslog(LOG_ERR, "configure: ioctl SIOCGIFNUM: %m");
return (B_FALSE);
}
bufsize = numifs * sizeof (struct ifreq);
buf = malloc(bufsize);
if (buf == NULL) {
syslog(LOG_ERR, "configure: malloc: %m");
return (B_FALSE);
}
ifc.ifc_len = bufsize;
ifc.ifc_buf = buf;
if (ioctl(s, SIOCGIFCONF, (char *)&ifc) < 0) {
syslog(LOG_ERR,
"configure: ioctl (get interface configuration): %m");
(void) free(buf);
return (B_FALSE);
}
ifr = ifc.ifc_req;
for (n = ifc.ifc_len / sizeof (struct ifreq); n > 0; n--, ifr++) {
/* Skip all logical interfaces */
if (index(ifr->ifr_name, ':') != NULL)
continue;
for (np = neighbors; np != NULL; np = np->n_next) {
if (np->n_name &&
strcmp(ifr->ifr_name, np->n_name) == 0)
break;
}
if (np != NULL)
continue;
ifreq = *ifr;
np = (struct neighbor *)malloc(sizeof (*np));
if (np == NULL)
continue;
np->n_name = malloc(strlen(ifr->ifr_name) + 1);
if (np->n_name == NULL) {
free(np);
continue;
}
(void) strcpy(np->n_name, ifr->ifr_name);
np->n_addrlen = sizeof (ifr->ifr_addr);
np->n_addr = malloc(np->n_addrlen);
if (np->n_addr == NULL) {
free(np->n_name);
free(np);
continue;
}
bcopy(&ifr->ifr_addr, np->n_addr, np->n_addrlen);
if (ioctl(s, SIOCGIFFLAGS, (char *)&ifreq) < 0) {
syslog(LOG_ERR,
"configure: ioctl (get interface flags): %m");
free(np->n_addr);
free(np->n_name);
free(np);
continue;
}
np->n_flags = ifreq.ifr_flags;
if (((struct sockaddr_in *)np->n_addr)->sin_family == AF_INET &&
ioctl(s, SIOCGIFNETMASK, (char *)&ifreq) >= 0) {
sin = (struct sockaddr_in *)np->n_addr;
np->n_subnet = sin->sin_addr.s_addr &
((struct sockaddr_in *)&ifreq.ifr_addr)->
sin_addr.s_addr;
}
if (multicast_mode == PER_INTERFACE_MULTICAST &&
(np->n_flags & IFF_UP) &&
(np->n_flags & IFF_MULTICAST) &&
!(np->n_flags & IFF_LOOPBACK)) {
struct ip_mreq mreq;
/*
* Skip interfaces that have matching subnets i.e.
* (addr & netmask) are identical.
* Such interfaces are connected to the same
* physical wire.
*/
for (np2 = neighbors; np2 != NULL; np2 = np2->n_next) {
if (!(np->n_flags & IFF_POINTOPOINT) &&
!(np2->n_flags & IFF_POINTOPOINT) &&
(np->n_subnet == np2->n_subnet)) {
free(np->n_addr);
free(np->n_name);
free(np);
break;
}
}
if (np2 != NULL)
continue;
mreq.imr_multiaddr.s_addr = htonl(INADDR_WHOD_GROUP);
mreq.imr_interface.s_addr =
((struct sockaddr_in *)np->n_addr)->sin_addr.s_addr;
if (setsockopt(s, IPPROTO_IP, IP_ADD_MEMBERSHIP, &mreq,
sizeof (mreq)) < 0) {
syslog(LOG_ERR,
"configure: "
"setsockopt IP_ADD_MEMBERSHIP: %m");
free(np->n_addr);
free(np->n_name);
free(np);
continue;
}
multicast_addr.sin_addr.s_addr =
htonl(INADDR_WHOD_GROUP);
multicast_addr.sin_port = sp->s_port;
np->n_next = neighbors;
neighbors = np;
continue;
}
if ((np->n_flags & IFF_UP) == 0 ||
(np->n_flags & (IFF_BROADCAST|IFF_POINTOPOINT)) == 0) {
free(np->n_addr);
free(np->n_name);
free(np);
continue;
}
if (np->n_flags & IFF_POINTOPOINT) {
if (ioctl(s, SIOCGIFDSTADDR, (char *)&ifreq) < 0) {
syslog(LOG_ERR,
"configure: ioctl (get dstaddr): %m");
free(np->n_addr);
free(np->n_name);
free(np);
continue;
}
/* we assume addresses are all the same size */
bcopy(&ifreq.ifr_dstaddr, np->n_addr, np->n_addrlen);
}
if (np->n_flags & IFF_BROADCAST) {
if (ioctl(s, SIOCGIFBRDADDR, (char *)&ifreq) < 0) {
syslog(LOG_ERR,
"configure: ioctl (get broadaddr): %m");
free(np->n_addr);
free(np->n_name);
free(np);
continue;
}
/* we assume addresses are all the same size */
bcopy(&ifreq.ifr_broadaddr, np->n_addr, np->n_addrlen);
}
/* gag, wish we could get rid of Internet dependencies */
sin = (struct sockaddr_in *)np->n_addr;
sin->sin_port = sp->s_port;
/*
* Avoid adding duplicate broadcast and pt-pt destinations
* to the list.
*/
for (np2 = neighbors; np2 != NULL; np2 = np2->n_next) {
struct sockaddr_in *sin2;
sin2 = (struct sockaddr_in *)np2->n_addr;
if (sin2->sin_addr.s_addr == sin->sin_addr.s_addr) {
free(np->n_addr);
free(np->n_name);
free(np);
break;
}
}
if (np2 != NULL)
continue;
np->n_next = neighbors;
neighbors = np;
}
(void) free(buf);
return (B_TRUE);
}
#ifdef DEBUG
static char *interval(uint_t, char *);
/* ARGSUSED */
static ssize_t
sendto(int s, const void *buf, size_t cc, int flags, const struct sockaddr *to,
socklen_t tolen)
{
struct whod *w = (struct whod *)buf;
struct whoent *we;
struct sockaddr_in *sin = (struct sockaddr_in *)to;
int nsz;
(void) printf("sendto %x.%d\n", ntohl(sin->sin_addr.s_addr),
ntohs(sin->sin_port));
(void) printf("hostname %s %s\n", w->wd_hostname,
interval(ntohl(w->wd_sendtime) - ntohl(w->wd_boottime), " up"));
(void) printf("load %4.2f, %4.2f, %4.2f\n",
ntohl(w->wd_loadav[0]) / 100.0, ntohl(w->wd_loadav[1]) / 100.0,
ntohl(w->wd_loadav[2]) / 100.0);
cc -= WHDRSIZE;
for (we = w->wd_we, cc /= sizeof (struct whoent); cc > 0; cc--, we++) {
time_t t = ntohl(we->we_utmp.out_time);
nsz = sizeof (we->we_utmp.out_name);
(void) printf("%-*.*s %s:%s %.12s",
nsz,
nsz,
we->we_utmp.out_name,
w->wd_hostname,
we->we_utmp.out_line,
ctime(&t)+4);
we->we_idle = ntohl(we->we_idle) / 60;
if (we->we_idle) {
if (we->we_idle >= 100*60)
we->we_idle = 100*60 - 1;
if (we->we_idle >= 60)
(void) printf(" %2d", we->we_idle / 60);
else
(void) printf(" ");
(void) printf(":%02d", we->we_idle % 60);
}
(void) printf("\n");
}
return (0);
}
static char *
interval(uint_t time, char *updown)
{
static char resbuf[32];
int days, hours, minutes;
if (time > 3*30*24*60*60) {
(void) sprintf(resbuf, " %s ??:??", updown);
return (resbuf);
}
minutes = (time + 59) / 60; /* round to minutes */
hours = minutes / 60;
minutes %= 60;
days = hours / 24;
hours %= 24;
if (days > 0) {
(void) sprintf(resbuf, "%s %2d+%02d:%02d",
updown, days, hours, minutes);
} else {
(void) sprintf(resbuf, "%s %2d:%02d",
updown, hours, minutes);
}
return (resbuf);
}
#endif