rup.c revision 8874 
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 1.1.1.1 1994/08/28 15:01:31 csgr 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
99	if (search_host(raddrp->sin_addr))
100		return(0);
101
102	hp = gethostbyaddr((char *)&raddrp->sin_addr.s_addr,
103			   sizeof(struct in_addr), AF_INET);
104	if (hp)
105		host = hp->h_name;
106	else
107		host = inet_ntoa(raddrp->sin_addr);
108
109	/* truncate hostname to fit nicely into field */
110	if (strlen(host) > HOST_WIDTH)
111		host[HOST_WIDTH] = '\0';
112
113	printf("%-*s\t", HOST_WIDTH, host);
114
115	tmp_time = localtime((time_t *)&host_stat->curtime.tv_sec);
116	host_time = *tmp_time;
117
118	host_stat->curtime.tv_sec -= host_stat->boottime.tv_sec;
119
120	tmp_time = gmtime((time_t *)&host_stat->curtime.tv_sec);
121	host_uptime = *tmp_time;
122
123	if (host_uptime.tm_yday != 0)
124		sprintf(days_buf, "%3d day%s, ", host_uptime.tm_yday,
125			(host_uptime.tm_yday > 1) ? "s" : "");
126	else
127		days_buf[0] = '\0';
128
129	if (host_uptime.tm_hour != 0)
130		sprintf(hours_buf, "%2d:%02d, ",
131			host_uptime.tm_hour, host_uptime.tm_min);
132	else
133		if (host_uptime.tm_min != 0)
134			sprintf(hours_buf, "%2d mins, ", host_uptime.tm_min);
135		else
136			hours_buf[0] = '\0';
137
138	printf(" %2d:%02d%cm  up %9.9s%9.9s load average: %.2f %.2f %.2f\n",
139		host_time.tm_hour % 12,
140		host_time.tm_min,
141		(host_time.tm_hour >= 12) ? 'p' : 'a',
142		days_buf,
143		hours_buf,
144		(double)host_stat->avenrun[0]/FSCALE,
145		(double)host_stat->avenrun[1]/FSCALE,
146		(double)host_stat->avenrun[2]/FSCALE);
147
148	remember_host(raddrp->sin_addr);
149	return(0);
150}
151
152onehost(char *host)
153{
154	CLIENT *rstat_clnt;
155	statstime host_stat;
156	struct sockaddr_in addr;
157	struct hostent *hp;
158
159	hp = gethostbyname(host);
160	if (hp == NULL) {
161		fprintf(stderr, "%s: unknown host \"%s\"\n",
162			argv0, host);
163		return(-1);
164	}
165
166	rstat_clnt = clnt_create(host, RSTATPROG, RSTATVERS_TIME, "udp");
167	if (rstat_clnt == NULL) {
168		fprintf(stderr, "%s: %s %s", argv0, host, clnt_spcreateerror(""));
169		return(-1);
170	}
171
172	bzero((char *)&host_stat, sizeof(host_stat));
173	if (clnt_call(rstat_clnt, RSTATPROC_STATS, xdr_void, NULL, xdr_statstime, &host_stat, NULL) != RPC_SUCCESS) {
174		fprintf(stderr, "%s: %s: %s\n", argv0, host, clnt_sperror(rstat_clnt, host));
175		return(-1);
176	}
177
178	addr.sin_addr.s_addr = *(int *)hp->h_addr;
179	rstat_reply((char *)&host_stat, &addr);
180}
181
182allhosts()
183{
184	statstime host_stat;
185	enum clnt_stat clnt_stat;
186
187	clnt_stat = clnt_broadcast(RSTATPROG, RSTATVERS_TIME, RSTATPROC_STATS,
188				   xdr_void, NULL,
189				   xdr_statstime, &host_stat, rstat_reply);
190	if (clnt_stat != RPC_SUCCESS && clnt_stat != RPC_TIMEDOUT) {
191		fprintf(stderr, "%s: %s\n", argv0, clnt_sperrno(clnt_stat));
192		exit(1);
193	}
194}
195
196usage()
197{
198	fprintf(stderr, "Usage: %s [hosts ...]\n", argv0);
199	exit(1);
200}
201
202main(int argc, char *argv[])
203{
204	int ch;
205	extern int optind;
206
207	if (!(argv0 = rindex(argv[0], '/')))
208		argv0 = argv[0];
209	else
210		argv0++;
211
212	while ((ch = getopt(argc, argv, "?")) != -1)
213		switch (ch) {
214		default:
215			usage();
216			/*NOTREACHED*/
217		}
218
219	setlinebuf(stdout);
220	if (argc == optind)
221		allhosts();
222	else {
223		for (; optind < argc; optind++)
224			(void) onehost(argv[optind]);
225	}
226	exit(0);
227}
228