/usr.bin/rup/rup.c

  1/*-
  2 * Copyright (c) 1993, John Brezak
  3 * All rights reserved.
  4 *
  5 * Redistribution and use in source and binary forms, with or without
  6 * modification, are permitted provided that the following conditions
  7 * are met:
  8 * 1. Redistributions of source code must retain the above copyright
  9 *    notice, this list of conditions and the following disclaimer.
 10 * 2. Redistributions in binary form must reproduce the above copyright
 11 *    notice, this list of conditions and the following disclaimer in the
 12 *    documentation and/or other materials provided with the distribution.
 13 * 3. All advertising materials mentioning features or use of this software
 14 *    must display the following acknowledgement:
 15 *	This product includes software developed by the University of
 16 *	California, Berkeley and its contributors.
 17 * 4. Neither the name of the University nor the names of its contributors
 18 *    may be used to endorse or promote products derived from this software
 19 *    without specific prior written permission.
 20 *
 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 31 * SUCH DAMAGE.
 32 */
 33
 34#include <sys/cdefs.h>
 35
 36__FBSDID("$FreeBSD$");
 37
 38#include <sys/param.h>
 39#include <sys/socket.h>
 40
 41#include <rpc/rpc.h>
 42#include <rpc/pmap_clnt.h>
 43
 44#undef FSHIFT			/* Use protocol's shift and scale values */
 45#undef FSCALE
 46
 47#include <rpcsvc/rstat.h>
 48
 49#include <arpa/inet.h>
 50
 51#include <err.h>
 52#include <netdb.h>
 53#include <stdio.h>
 54#include <string.h>
 55#include <stdlib.h>
 56#include <time.h>
 57#include <unistd.h>
 58
 59#define HOST_WIDTH 15
 60
 61struct host_list {
 62	struct host_list *next;
 63	struct in_addr addr;
 64} *hosts;
 65
 66static int
 67search_host(struct in_addr addr)
 68{
 69	struct host_list *hp;
 70
 71	if (!hosts)
 72		return(0);
 73
 74	for (hp = hosts; hp != NULL; hp = hp->next) {
 75		if (hp->addr.s_addr == addr.s_addr)
 76			return(1);
 77	}
 78	return(0);
 79}
 80
 81static void
 82remember_host(struct in_addr addr)
 83{
 84	struct host_list *hp;
 85
 86	if (!(hp = (struct host_list *)malloc(sizeof(struct host_list))))
 87		errx(1, "no memory");
 88	hp->addr.s_addr = addr.s_addr;
 89	hp->next = hosts;
 90	hosts = hp;
 91}
 92
 93static bool_t
 94rstat_reply(caddr_t replyp, struct sockaddr_in *raddrp)
 95{
 96	struct tm *tmp_time;
 97	struct tm host_time;
 98	struct tm host_uptime;
 99	char days_buf[16];
100	char hours_buf[16];
101	struct hostent *hp;
102	char *host;
103	statstime *host_stat = (statstime *)replyp;
104	time_t tmp_time_t;
105
106	if (search_host(raddrp->sin_addr))
107		return(0);
108
109	hp = gethostbyaddr((char *)&raddrp->sin_addr.s_addr,
110			   sizeof(struct in_addr), AF_INET);
111	if (hp)
112		host = hp->h_name;
113	else
114		host = inet_ntoa(raddrp->sin_addr);
115
116	/* truncate hostname to fit nicely into field */
117	if (strlen(host) > HOST_WIDTH)
118		host[HOST_WIDTH] = '\0';
119
120	printf("%-*s\t", HOST_WIDTH, host);
121
122	if (sizeof(time_t) == sizeof(host_stat->curtime.tv_sec)) {
123		tmp_time = localtime((time_t *)&host_stat->curtime.tv_sec);
124		host_time = *tmp_time;
125
126		host_stat->curtime.tv_sec -= host_stat->boottime.tv_sec;
127
128		tmp_time = gmtime((time_t *)&host_stat->curtime.tv_sec);
129		host_uptime = *tmp_time;
130	}
131	else {			/* non-32-bit time_t */
132		tmp_time_t = host_stat->curtime.tv_sec;
133		tmp_time = localtime(&tmp_time_t);
134		host_time = *tmp_time;
135
136		host_stat->curtime.tv_sec -= host_stat->boottime.tv_sec;
137
138		tmp_time_t = host_stat->curtime.tv_sec;
139		tmp_time = gmtime(&tmp_time_t);
140		host_uptime = *tmp_time;
141	}
142
143	#define updays (host_stat->curtime.tv_sec  / 86400)
144	if (host_uptime.tm_yday != 0)
145		sprintf(days_buf, "%3d day%s, ", updays,
146			(updays > 1) ? "s" : "");
147	else
148		days_buf[0] = '\0';
149
150	if (host_uptime.tm_hour != 0)
151		sprintf(hours_buf, "%2d:%02d, ",
152			host_uptime.tm_hour, host_uptime.tm_min);
153	else
154		if (host_uptime.tm_min != 0)
155			sprintf(hours_buf, "%2d mins, ", host_uptime.tm_min);
156		else if (host_stat->curtime.tv_sec < 60)
157			sprintf(hours_buf, "%2d secs, ", host_uptime.tm_sec);
158		else
159			hours_buf[0] = '\0';
160
161	printf(" %2d:%02d%cm  up %9.9s%9.9s load average: %.2f %.2f %.2f\n",
162		(host_time.tm_hour % 12) ? host_time.tm_hour % 12 : 12,
163		host_time.tm_min,
164		(host_time.tm_hour >= 12) ? 'p' : 'a',
165		days_buf,
166		hours_buf,
167		(double)host_stat->avenrun[0]/FSCALE,
168		(double)host_stat->avenrun[1]/FSCALE,
169		(double)host_stat->avenrun[2]/FSCALE);
170
171	remember_host(raddrp->sin_addr);
172	return(0);
173}
174
175static int
176onehost(char *host)
177{
178	CLIENT *rstat_clnt;
179	statstime host_stat;
180	struct sockaddr_in addr;
181	struct hostent *hp;
182	struct timeval tv;
183
184	hp = gethostbyname(host);
185	if (hp == NULL) {
186		warnx("unknown host \"%s\"", host);
187		return(-1);
188	}
189
190	rstat_clnt = clnt_create(host, RSTATPROG, RSTATVERS_TIME, "udp");
191	if (rstat_clnt == NULL) {
192		warnx("%s %s", host, clnt_spcreateerror(""));
193		return(-1);
194	}
195
196	bzero((char *)&host_stat, sizeof(host_stat));
197	tv.tv_sec = 15;	/* XXX ??? */
198	tv.tv_usec = 0;
199	if (clnt_call(rstat_clnt, RSTATPROC_STATS,
200	    (xdrproc_t)xdr_void, NULL,
201	    (xdrproc_t)xdr_statstime, &host_stat, tv) != RPC_SUCCESS) {
202		warnx("%s: %s", host, clnt_sperror(rstat_clnt, host));
203		clnt_destroy(rstat_clnt);
204		return(-1);
205	}
206
207	addr.sin_addr.s_addr = *(int *)hp->h_addr;
208	rstat_reply((caddr_t)&host_stat, &addr);
209	clnt_destroy(rstat_clnt);
210	return (0);
211}
212
213static void
214allhosts(void)
215{
216	statstime host_stat;
217	enum clnt_stat clnt_stat;
218
219	clnt_stat = clnt_broadcast(RSTATPROG, RSTATVERS_TIME, RSTATPROC_STATS,
220				   (xdrproc_t)xdr_void, NULL,
221				   (xdrproc_t)xdr_statstime, &host_stat,
222				   (resultproc_t)rstat_reply);
223	if (clnt_stat != RPC_SUCCESS && clnt_stat != RPC_TIMEDOUT)
224		errx(1, "%s", clnt_sperrno(clnt_stat));
225}
226
227static void
228usage(void)
229{
230	fprintf(stderr, "usage: rup [host ...]\n");
231	exit(1);
232}
233
234int
235main(int argc, char *argv[])
236{
237	int ch;
238
239	while ((ch = getopt(argc, argv, "?")) != -1)
240		switch (ch) {
241		default:
242			usage();
243			/*NOTREACHED*/
244		}
245
246	setlinebuf(stdout);
247	if (argc == optind)
248		allhosts();
249	else {
250		for (; optind < argc; optind++)
251			(void) onehost(argv[optind]);
252	}
253	exit(0);
254}