Remove some unnecessary casts.
[dragonfly.git] / usr.bin / rup / rup.c
CommitLineData
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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.
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32 *
33 * $FreeBSD: src/usr.bin/rup/rup.c,v 1.11.2.2 2001/07/02 23:43:04 mikeh Exp $
fb4ea457 34 * $DragonFly: src/usr.bin/rup/rup.c,v 1.5 2005/08/04 18:21:25 liamfoy Exp $
984263bc 35 */
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36#include <sys/param.h>
37#include <sys/socket.h>
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38
39#include <arpa/inet.h>
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40#include <rpc/rpc.h>
41#include <rpc/pmap_clnt.h>
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42#undef FSHIFT /* Use protocol's shift and scale values */
43#undef FSCALE
44#include <rpcsvc/rstat.h>
45
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46#include <err.h>
47#include <netdb.h>
48#include <stdio.h>
49#include <stdlib.h>
50#include <string.h>
51#include <time.h>
52#include <unistd.h>
53
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54#define HOST_WIDTH 15
55
56struct host_list {
57 struct host_list *next;
58 struct in_addr addr;
59} *hosts;
60
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61static int
62search_host(struct in_addr addr)
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63{
64 struct host_list *hp;
65
2ffa3c11 66 if (hosts == NULL)
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67 return(0);
68
69 for (hp = hosts; hp != NULL; hp = hp->next) {
70 if (hp->addr.s_addr == addr.s_addr)
71 return(1);
72 }
73 return(0);
74}
75
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76static void
77remember_host(struct in_addr addr)
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78{
79 struct host_list *hp;
80
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81 if ((hp = malloc(sizeof(struct host_list))) == NULL)
82 err(1, "malloc failed");
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83 hp->addr.s_addr = addr.s_addr;
84 hp->next = hosts;
85 hosts = hp;
86}
87
2ffa3c11 88static int
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89rstat_reply(char *replyp, struct sockaddr_in *raddrp)
90{
91 struct tm *tmp_time;
92 struct tm host_time;
93 struct tm host_uptime;
94 char days_buf[16];
95 char hours_buf[16];
96 struct hostent *hp;
97 char *host;
98 statstime *host_stat = (statstime *)replyp;
99
100 if (search_host(raddrp->sin_addr))
101 return(0);
102
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103 hp = gethostbyaddr(&raddrp->sin_addr.s_addr, sizeof(struct in_addr),
104 AF_INET);
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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 host_stat->curtime.tv_sec -= host_stat->boottime.tv_sec;
120
121 tmp_time = gmtime((time_t *)&host_stat->curtime.tv_sec);
122 host_uptime = *tmp_time;
123
124 #define updays (host_stat->curtime.tv_sec / 86400)
125 if (host_uptime.tm_yday != 0)
2ffa3c11 126 snprintf(days_buf, sizeof days_buf, "%3d day%s, ", updays,
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127 (updays > 1) ? "s" : "");
128 else
129 days_buf[0] = '\0';
130
131 if (host_uptime.tm_hour != 0)
2ffa3c11 132 snprintf(hours_buf, sizeof hours_buf, "%2d:%02d, ",
984263bc 133 host_uptime.tm_hour, host_uptime.tm_min);
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134 else if (host_uptime.tm_min != 0)
135 snprintf(hours_buf, sizeof hours_buf, "%2d mins, ",
136 host_uptime.tm_min);
137 else if (host_stat->curtime.tv_sec < 60)
138 snprintf(hours_buf, sizeof hours_buf, "%2d secs, ",
139 host_uptime.tm_sec);
984263bc 140 else
2ffa3c11 141 hours_buf[0] = '\0';
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142
143 printf(" %2d:%02d%cm up %9.9s%9.9s load average: %.2f %.2f %.2f\n",
144 (host_time.tm_hour % 12) ? host_time.tm_hour % 12 : 12,
145 host_time.tm_min,
146 (host_time.tm_hour >= 12) ? 'p' : 'a',
147 days_buf,
148 hours_buf,
149 (double)host_stat->avenrun[0]/FSCALE,
150 (double)host_stat->avenrun[1]/FSCALE,
151 (double)host_stat->avenrun[2]/FSCALE);
152
153 remember_host(raddrp->sin_addr);
154 return(0);
155}
156
2ffa3c11 157static int
71e2da83 158onehost(const char *host)
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159{
160 CLIENT *rstat_clnt;
161 statstime host_stat;
162 struct sockaddr_in addr;
163 struct hostent *hp;
164 struct timeval tv;
165
166 hp = gethostbyname(host);
167 if (hp == NULL) {
2ffa3c11 168 herror("rup");
fb4ea457 169 return(1);
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170 }
171
172 rstat_clnt = clnt_create(host, RSTATPROG, RSTATVERS_TIME, "udp");
173 if (rstat_clnt == NULL) {
2ffa3c11 174 clnt_pcreateerror(host);
fb4ea457 175 return(1);
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176 }
177
2ffa3c11 178 bzero(&host_stat, sizeof(host_stat));
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179 tv.tv_sec = 15; /* XXX ??? */
180 tv.tv_usec = 0;
71e2da83 181 if (clnt_call(rstat_clnt, RSTATPROC_STATS, xdr_void, NULL, (xdrproc_t)xdr_statstime, &host_stat, tv) != RPC_SUCCESS) {
2ffa3c11 182 clnt_perror(rstat_clnt, host);
984263bc 183 clnt_destroy(rstat_clnt);
fb4ea457 184 return(1);
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185 }
186
187 addr.sin_addr.s_addr = *(int *)hp->h_addr;
188 rstat_reply((char *)&host_stat, &addr);
189 clnt_destroy(rstat_clnt);
190 return (0);
191}
192
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193static void
194allhosts(void)
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195{
196 statstime host_stat;
197 enum clnt_stat clnt_stat;
198
199 clnt_stat = clnt_broadcast(RSTATPROG, RSTATVERS_TIME, RSTATPROC_STATS,
200 xdr_void, NULL,
71e2da83 201 (xdrproc_t)xdr_statstime, (char *)&host_stat, rstat_reply);
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202 if (clnt_stat != RPC_SUCCESS && clnt_stat != RPC_TIMEDOUT)
203 errx(1, "%s", clnt_sperrno(clnt_stat));
204}
205
206static void
2ffa3c11 207usage(void)
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208{
209 fprintf(stderr, "usage: rup [hosts ...]\n");
210 exit(1);
211}
212
213int
214main(int argc, char *argv[])
215{
fb4ea457 216 int ch, retval;
984263bc 217
fb4ea457 218 retval = 0;
2ffa3c11 219 while ((ch = getopt(argc, argv, "")) != -1)
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220 switch (ch) {
221 default:
222 usage();
223 /*NOTREACHED*/
224 }
225
226 setlinebuf(stdout);
227 if (argc == optind)
228 allhosts();
229 else {
230 for (; optind < argc; optind++)
fb4ea457 231 retval += onehost(argv[optind]);
984263bc 232 }
fb4ea457 233 exit(retval ? 1 : 0);
984263bc 234}