FreeBSD-5.3/usr.bin/rup/rup.c
/*-
* Copyright (c) 1993, John Brezak
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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 BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/usr.bin/rup/rup.c,v 1.17 2003/10/26 04:57:31 peter Exp $");
#include <sys/param.h>
#include <sys/socket.h>
#include <rpc/rpc.h>
#include <rpc/pmap_clnt.h>
#undef FSHIFT /* Use protocol's shift and scale values */
#undef FSCALE
#include <rpcsvc/rstat.h>
#include <arpa/inet.h>
#include <err.h>
#include <netdb.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
#define HOST_WIDTH 15
struct host_list {
struct host_list *next;
struct in_addr addr;
} *hosts;
static int
search_host(struct in_addr addr)
{
struct host_list *hp;
if (!hosts)
return(0);
for (hp = hosts; hp != NULL; hp = hp->next) {
if (hp->addr.s_addr == addr.s_addr)
return(1);
}
return(0);
}
static void
remember_host(struct in_addr addr)
{
struct host_list *hp;
if (!(hp = (struct host_list *)malloc(sizeof(struct host_list))))
errx(1, "no memory");
hp->addr.s_addr = addr.s_addr;
hp->next = hosts;
hosts = hp;
}
static bool_t
rstat_reply(caddr_t replyp, struct sockaddr_in *raddrp)
{
struct tm *tmp_time;
struct tm host_time;
struct tm host_uptime;
char days_buf[16];
char hours_buf[16];
struct hostent *hp;
char *host;
statstime *host_stat = (statstime *)replyp;
if (search_host(raddrp->sin_addr))
return(0);
hp = gethostbyaddr((char *)&raddrp->sin_addr.s_addr,
sizeof(struct in_addr), AF_INET);
if (hp)
host = hp->h_name;
else
host = inet_ntoa(raddrp->sin_addr);
/* truncate hostname to fit nicely into field */
if (strlen(host) > HOST_WIDTH)
host[HOST_WIDTH] = '\0';
printf("%-*s\t", HOST_WIDTH, host);
tmp_time = localtime((time_t *)&host_stat->curtime.tv_sec);
host_time = *tmp_time;
host_stat->curtime.tv_sec -= host_stat->boottime.tv_sec;
tmp_time = gmtime((time_t *)&host_stat->curtime.tv_sec);
host_uptime = *tmp_time;
#define updays (host_stat->curtime.tv_sec / 86400)
if (host_uptime.tm_yday != 0)
sprintf(days_buf, "%3d day%s, ", updays,
(updays > 1) ? "s" : "");
else
days_buf[0] = '\0';
if (host_uptime.tm_hour != 0)
sprintf(hours_buf, "%2d:%02d, ",
host_uptime.tm_hour, host_uptime.tm_min);
else
if (host_uptime.tm_min != 0)
sprintf(hours_buf, "%2d mins, ", host_uptime.tm_min);
else if (host_stat->curtime.tv_sec < 60)
sprintf(hours_buf, "%2d secs, ", host_uptime.tm_sec);
else
hours_buf[0] = '\0';
printf(" %2d:%02d%cm up %9.9s%9.9s load average: %.2f %.2f %.2f\n",
(host_time.tm_hour % 12) ? host_time.tm_hour % 12 : 12,
host_time.tm_min,
(host_time.tm_hour >= 12) ? 'p' : 'a',
days_buf,
hours_buf,
(double)host_stat->avenrun[0]/FSCALE,
(double)host_stat->avenrun[1]/FSCALE,
(double)host_stat->avenrun[2]/FSCALE);
remember_host(raddrp->sin_addr);
return(0);
}
static int
onehost(char *host)
{
CLIENT *rstat_clnt;
statstime host_stat;
struct sockaddr_in addr;
struct hostent *hp;
struct timeval tv;
hp = gethostbyname(host);
if (hp == NULL) {
warnx("unknown host \"%s\"", host);
return(-1);
}
rstat_clnt = clnt_create(host, RSTATPROG, RSTATVERS_TIME, "udp");
if (rstat_clnt == NULL) {
warnx("%s %s", host, clnt_spcreateerror(""));
return(-1);
}
bzero((char *)&host_stat, sizeof(host_stat));
tv.tv_sec = 15; /* XXX ??? */
tv.tv_usec = 0;
if (clnt_call(rstat_clnt, RSTATPROC_STATS,
(xdrproc_t)xdr_void, NULL,
(xdrproc_t)xdr_statstime, &host_stat, tv) != RPC_SUCCESS) {
warnx("%s: %s", host, clnt_sperror(rstat_clnt, host));
clnt_destroy(rstat_clnt);
return(-1);
}
addr.sin_addr.s_addr = *(int *)hp->h_addr;
rstat_reply((caddr_t)&host_stat, &addr);
clnt_destroy(rstat_clnt);
return (0);
}
static void
allhosts(void)
{
statstime host_stat;
enum clnt_stat clnt_stat;
clnt_stat = clnt_broadcast(RSTATPROG, RSTATVERS_TIME, RSTATPROC_STATS,
(xdrproc_t)xdr_void, NULL,
(xdrproc_t)xdr_statstime, &host_stat,
(resultproc_t)rstat_reply);
if (clnt_stat != RPC_SUCCESS && clnt_stat != RPC_TIMEDOUT)
errx(1, "%s", clnt_sperrno(clnt_stat));
}
static void
usage(void)
{
fprintf(stderr, "usage: rup [hosts ...]\n");
exit(1);
}
int
main(int argc, char *argv[])
{
int ch;
while ((ch = getopt(argc, argv, "?")) != -1)
switch (ch) {
default:
usage();
/*NOTREACHED*/
}
setlinebuf(stdout);
if (argc == optind)
allhosts();
else {
for (; optind < argc; optind++)
(void) onehost(argv[optind]);
}
exit(0);
}