Correct BSD License clause numbering from 1-2-4 to 1-2-3.
[dragonfly.git] / usr.bin / rup / rup.c
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
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
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
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
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
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
219 usage(void)
220 {
221         fprintf(stderr, "usage: rup [host ...]\n");
222         exit(1);
223 }
224
225 int
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 }