xref: /dragonfly/usr.bin/rup/rup.c (revision dc71b7ab)
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. Neither the name of the University nor the names of its contributors
14  *    may be used to endorse or promote products derived from this software
15  *    without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  *
29  * $FreeBSD: src/usr.bin/rup/rup.c,v 1.19 2005/12/04 18:25:26 philip Exp $
30  * $DragonFly: src/usr.bin/rup/rup.c,v 1.5 2005/08/04 18:21:25 liamfoy Exp $
31  */
32 #include <sys/param.h>
33 #include <sys/socket.h>
34 
35 #include <arpa/inet.h>
36 #include <rpc/rpc.h>
37 #include <rpc/pmap_clnt.h>
38 #undef FSHIFT			/* Use protocol's shift and scale values */
39 #undef FSCALE
40 #include <rpcsvc/rstat.h>
41 
42 #include <err.h>
43 #include <netdb.h>
44 #include <stdio.h>
45 #include <stdlib.h>
46 #include <string.h>
47 #include <time.h>
48 #include <unistd.h>
49 
50 #define HOST_WIDTH 15
51 
52 struct host_list {
53 	struct host_list *next;
54 	struct in_addr addr;
55 } *hosts;
56 
57 static int
search_host(struct in_addr addr)58 search_host(struct in_addr addr)
59 {
60 	struct host_list *hp;
61 
62 	if (hosts == NULL)
63 		return(0);
64 
65 	for (hp = hosts; hp != NULL; hp = hp->next) {
66 		if (hp->addr.s_addr == addr.s_addr)
67 			return(1);
68 	}
69 	return(0);
70 }
71 
72 static void
remember_host(struct in_addr addr)73 remember_host(struct in_addr addr)
74 {
75 	struct host_list *hp;
76 
77 	if ((hp = malloc(sizeof(struct host_list))) == NULL)
78 		err(1, "malloc failed");
79 	hp->addr.s_addr = addr.s_addr;
80 	hp->next = hosts;
81 	hosts = hp;
82 }
83 
84 static bool_t
rstat_reply(caddr_t replyp,struct sockaddr_in * raddrp)85 rstat_reply(caddr_t replyp, struct sockaddr_in *raddrp)
86 {
87 	struct tm *tmp_time;
88 	struct tm host_time;
89 	struct tm host_uptime;
90 	char days_buf[16];
91 	char hours_buf[16];
92 	struct hostent *hp;
93 	char *host;
94 	statstime *host_stat = (statstime *)replyp;
95 	time_t tmp_time_t;
96 
97 	if (search_host(raddrp->sin_addr))
98 		return(0);
99 
100 	hp = gethostbyaddr(&raddrp->sin_addr.s_addr, sizeof(struct in_addr),
101 			   AF_INET);
102 	if (hp)
103 		host = hp->h_name;
104 	else
105 		host = inet_ntoa(raddrp->sin_addr);
106 
107 	/* truncate hostname to fit nicely into field */
108 	if (strlen(host) > HOST_WIDTH)
109 		host[HOST_WIDTH] = '\0';
110 
111 	printf("%-*s\t", HOST_WIDTH, host);
112 
113 	if (sizeof(time_t) == sizeof(host_stat->curtime.tv_sec)) {
114 		tmp_time = localtime((time_t *)&host_stat->curtime.tv_sec);
115 		host_time = *tmp_time;
116 
117 		host_stat->curtime.tv_sec -= host_stat->boottime.tv_sec;
118 
119 		tmp_time = gmtime((time_t *)&host_stat->curtime.tv_sec);
120 		host_uptime = *tmp_time;
121 	}
122 	else {			/* non-32-bit time_t */
123 		tmp_time_t = host_stat->curtime.tv_sec;
124 		tmp_time = localtime(&tmp_time_t);
125 		host_time = *tmp_time;
126 
127 		host_stat->curtime.tv_sec -= host_stat->boottime.tv_sec;
128 
129 		tmp_time_t = host_stat->curtime.tv_sec;
130 		tmp_time = gmtime(&tmp_time_t);
131 		host_uptime = *tmp_time;
132 	}
133 
134 	#define updays (host_stat->curtime.tv_sec  / 86400)
135 	if (host_uptime.tm_yday != 0)
136 		snprintf(days_buf, sizeof days_buf, "%3d day%s, ", updays,
137 			(updays > 1) ? "s" : "");
138 	else
139 		days_buf[0] = '\0';
140 
141 	if (host_uptime.tm_hour != 0)
142 		snprintf(hours_buf, sizeof hours_buf, "%2d:%02d, ",
143 			host_uptime.tm_hour, host_uptime.tm_min);
144 	else if (host_uptime.tm_min != 0)
145 		snprintf(hours_buf, sizeof hours_buf, "%2d mins, ",
146 			 host_uptime.tm_min);
147 	else if (host_stat->curtime.tv_sec < 60)
148 		snprintf(hours_buf, sizeof hours_buf, "%2d secs, ",
149 			 host_uptime.tm_sec);
150 	else
151 		hours_buf[0] = '\0';
152 
153 	printf(" %2d:%02d%cm  up %9.9s%9.9s load average: %.2f %.2f %.2f\n",
154 		(host_time.tm_hour % 12) ? host_time.tm_hour % 12 : 12,
155 		host_time.tm_min,
156 		(host_time.tm_hour >= 12) ? 'p' : 'a',
157 		days_buf,
158 		hours_buf,
159 		(double)host_stat->avenrun[0]/FSCALE,
160 		(double)host_stat->avenrun[1]/FSCALE,
161 		(double)host_stat->avenrun[2]/FSCALE);
162 
163 	remember_host(raddrp->sin_addr);
164 	return(0);
165 }
166 
167 static int
onehost(const char * host)168 onehost(const char *host)
169 {
170 	CLIENT *rstat_clnt;
171 	statstime host_stat;
172 	struct sockaddr_in addr;
173 	struct hostent *hp;
174 	struct timeval tv;
175 
176 	hp = gethostbyname(host);
177 	if (hp == NULL) {
178 		herror("rup");
179 		return(1);
180 	}
181 
182 	rstat_clnt = clnt_create(host, RSTATPROG, RSTATVERS_TIME, "udp");
183 	if (rstat_clnt == NULL) {
184 		clnt_pcreateerror(host);
185 		return(1);
186 	}
187 
188 	bzero(&host_stat, sizeof(host_stat));
189 	tv.tv_sec = 15;	/* XXX ??? */
190 	tv.tv_usec = 0;
191 	if (clnt_call(rstat_clnt, RSTATPROC_STATS, (xdrproc_t)xdr_void, NULL,
192 	    (xdrproc_t)xdr_statstime, &host_stat, tv) != RPC_SUCCESS) {
193 		clnt_perror(rstat_clnt, host);
194 		clnt_destroy(rstat_clnt);
195 		return(1);
196 	}
197 
198 	addr.sin_addr.s_addr = *(int *)hp->h_addr;
199 	rstat_reply((caddr_t)&host_stat, &addr);
200 	clnt_destroy(rstat_clnt);
201 	return (0);
202 }
203 
204 static void
allhosts(void)205 allhosts(void)
206 {
207 	statstime host_stat;
208 	enum clnt_stat clnt_stat;
209 
210 	clnt_stat = clnt_broadcast(RSTATPROG, RSTATVERS_TIME, RSTATPROC_STATS,
211 				   (xdrproc_t)xdr_void, NULL,
212 				   (xdrproc_t)xdr_statstime, &host_stat,
213 				   (resultproc_t)rstat_reply);
214 	if (clnt_stat != RPC_SUCCESS && clnt_stat != RPC_TIMEDOUT)
215 		errx(1, "%s", clnt_sperrno(clnt_stat));
216 }
217 
218 static void
usage(void)219 usage(void)
220 {
221 	fprintf(stderr, "usage: rup [host ...]\n");
222 	exit(1);
223 }
224 
225 int
main(int argc,char * argv[])226 main(int argc, char *argv[])
227 {
228 	int ch, retval;
229 
230 	retval = 0;
231 	while ((ch = getopt(argc, argv, "")) != -1)
232 		switch (ch) {
233 		default:
234 			usage();
235 			/*NOTREACHED*/
236 		}
237 
238 	setlinebuf(stdout);
239 	if (argc == optind)
240 		allhosts();
241 	else {
242 		for (; optind < argc; optind++)
243 			retval += onehost(argv[optind]);
244 	}
245 	exit(retval ? 1 : 0);
246 }
247