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