rup.c revision 12384 
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#ifndef lint
35static char rcsid[] = "$Id: rup.c,v 1.2 1995/05/30 06:33:26 rgrimes Exp $";
36#endif /* not lint */
37
38#include <stdio.h>
39#include <stdlib.h>
40#include <string.h>
41#include <time.h>
42#include <sys/param.h>
43#include <sys/socket.h>
44#include <netdb.h>
45#include <rpc/rpc.h>
46#include <arpa/inet.h>
47
48#undef FSHIFT			/* Use protocol's shift and scale values */
49#undef FSCALE
50#include <rpcsvc/rstat.h>
51
52#define HOST_WIDTH 15
53
54char *argv0;
55
56struct host_list {
57	struct host_list *next;
58	struct in_addr addr;
59} *hosts;
60
61int search_host(struct in_addr addr)
62{
63	struct host_list *hp;
64
65	if (!hosts)
66		return(0);
67
68	for (hp = hosts; hp != NULL; hp = hp->next) {
69		if (hp->addr.s_addr == addr.s_addr)
70			return(1);
71	}
72	return(0);
73}
74
75void remember_host(struct in_addr addr)
76{
77	struct host_list *hp;
78
79	if (!(hp = (struct host_list *)malloc(sizeof(struct host_list)))) {
80		fprintf(stderr, "%s: no memory.\n", argv0);
81		exit(1);
82	}
83	hp->addr.s_addr = addr.s_addr;
84	hp->next = hosts;
85	hosts = hp;
86}
87
88rstat_reply(char *replyp, struct sockaddr_in *raddrp)
89{
90	struct tm *tmp_time;
91	struct tm host_time;
92	struct tm host_uptime;
93	char days_buf[16];
94	char hours_buf[16];
95	struct hostent *hp;
96	char *host;
97	statstime *host_stat = (statstime *)replyp;
98	int year1, year2;
99
100	if (search_host(raddrp->sin_addr))
101		return(0);
102
103	hp = gethostbyaddr((char *)&raddrp->sin_addr.s_addr,
104			   sizeof(struct in_addr), AF_INET);
105	if (hp)
106		host = hp->h_name;
107	else
108		host = inet_ntoa(raddrp->sin_addr);
109
110	/* truncate hostname to fit nicely into field */
111	if (strlen(host) > HOST_WIDTH)
112		host[HOST_WIDTH] = '\0';
113
114	printf("%-*s\t", HOST_WIDTH, host);
115
116	tmp_time = localtime((time_t *)&host_stat->curtime.tv_sec);
117	host_time = *tmp_time;
118
119	tmp_time = gmtime((time_t *)&host_stat->curtime.tv_sec);
120	year1 = tmp_time->tm_year;
121	tmp_time = gmtime((time_t *)&host_stat->boottime.tv_sec);
122	year2 = tmp_time->tm_year;
123
124	host_stat->curtime.tv_sec -= host_stat->boottime.tv_sec;
125
126	tmp_time = gmtime((time_t *)&host_stat->curtime.tv_sec);
127	host_uptime = *tmp_time;
128
129	if (host_uptime.tm_yday != 0)
130		sprintf(days_buf, "%3d day%s, ", host_uptime.tm_yday +
131			(365 * (year1 - year2)),
132			((host_uptime.tm_yday + (365*(year1 - year2)))> 1) ?
133			"s" : "");
134	else
135		days_buf[0] = '\0';
136
137	if (host_uptime.tm_hour != 0)
138		sprintf(hours_buf, "%2d:%02d, ",
139			host_uptime.tm_hour, host_uptime.tm_min);
140	else
141		if (host_uptime.tm_min != 0)
142			sprintf(hours_buf, "%2d mins, ", host_uptime.tm_min);
143		else
144			hours_buf[0] = '\0';
145
146	printf(" %2d:%02d%cm  up %9.9s%9.9s load average: %.2f %.2f %.2f\n",
147		host_time.tm_hour % 12,
148		host_time.tm_min,
149		(host_time.tm_hour >= 12) ? 'p' : 'a',
150		days_buf,
151		hours_buf,
152		(double)host_stat->avenrun[0]/FSCALE,
153		(double)host_stat->avenrun[1]/FSCALE,
154		(double)host_stat->avenrun[2]/FSCALE);
155
156	remember_host(raddrp->sin_addr);
157	return(0);
158}
159
160onehost(char *host)
161{
162	CLIENT *rstat_clnt;
163	statstime host_stat;
164	struct sockaddr_in addr;
165	struct hostent *hp;
166
167	hp = gethostbyname(host);
168	if (hp == NULL) {
169		fprintf(stderr, "%s: unknown host \"%s\"\n",
170			argv0, host);
171		return(-1);
172	}
173
174	rstat_clnt = clnt_create(host, RSTATPROG, RSTATVERS_TIME, "udp");
175	if (rstat_clnt == NULL) {
176		fprintf(stderr, "%s: %s %s", argv0, host, clnt_spcreateerror(""));
177		return(-1);
178	}
179
180	bzero((char *)&host_stat, sizeof(host_stat));
181	if (clnt_call(rstat_clnt, RSTATPROC_STATS, xdr_void, NULL, xdr_statstime, &host_stat, NULL) != RPC_SUCCESS) {
182		fprintf(stderr, "%s: %s: %s\n", argv0, host, clnt_sperror(rstat_clnt, host));
183		return(-1);
184	}
185
186	addr.sin_addr.s_addr = *(int *)hp->h_addr;
187	rstat_reply((char *)&host_stat, &addr);
188}
189
190allhosts()
191{
192	statstime host_stat;
193	enum clnt_stat clnt_stat;
194
195	clnt_stat = clnt_broadcast(RSTATPROG, RSTATVERS_TIME, RSTATPROC_STATS,
196				   xdr_void, NULL,
197				   xdr_statstime, &host_stat, rstat_reply);
198	if (clnt_stat != RPC_SUCCESS && clnt_stat != RPC_TIMEDOUT) {
199		fprintf(stderr, "%s: %s\n", argv0, clnt_sperrno(clnt_stat));
200		exit(1);
201	}
202}
203
204usage()
205{
206	fprintf(stderr, "Usage: %s [hosts ...]\n", argv0);
207	exit(1);
208}
209
210main(int argc, char *argv[])
211{
212	int ch;
213	extern int optind;
214
215	if (!(argv0 = rindex(argv[0], '/')))
216		argv0 = argv[0];
217	else
218		argv0++;
219
220	while ((ch = getopt(argc, argv, "?")) != -1)
221		switch (ch) {
222		default:
223			usage();
224			/*NOTREACHED*/
225		}
226
227	setlinebuf(stdout);
228	if (argc == optind)
229		allhosts();
230	else {
231		for (; optind < argc; optind++)
232			(void) onehost(argv[optind]);
233	}
234	exit(0);
235}
236