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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.
32  */
33
34 #include <sys/cdefs.h>
35
36 __FBSDID("$FreeBSD$");
37
38 #include <sys/param.h>
39 #include <sys/socket.h>
40
41 #include <rpc/rpc.h>
42 #include <rpc/pmap_clnt.h>
43
44 #undef FSHIFT                   /* Use protocol's shift and scale values */
45 #undef FSCALE
46
47 #include <rpcsvc/rstat.h>
48
49 #include <arpa/inet.h>
50
51 #include <err.h>
52 #include <netdb.h>
53 #include <stdio.h>
54 #include <string.h>
55 #include <stdlib.h>
56 #include <time.h>
57 #include <unistd.h>
58
59 #define HOST_WIDTH 15
60
61 struct host_list {
62         struct host_list *next;
63         struct in_addr addr;
64 } *hosts;
65
66 static int
67 search_host(struct in_addr addr)
68 {
69         struct host_list *hp;
70
71         if (!hosts)
72                 return(0);
73
74         for (hp = hosts; hp != NULL; hp = hp->next) {
75                 if (hp->addr.s_addr == addr.s_addr)
76                         return(1);
77         }
78         return(0);
79 }
80
81 static void
82 remember_host(struct in_addr addr)
83 {
84         struct host_list *hp;
85
86         if (!(hp = (struct host_list *)malloc(sizeof(struct host_list))))
87                 errx(1, "no memory");
88         hp->addr.s_addr = addr.s_addr;
89         hp->next = hosts;
90         hosts = hp;
91 }
92
93 static bool_t
94 rstat_reply(caddr_t replyp, struct sockaddr_in *raddrp)
95 {
96         struct tm *tmp_time;
97         struct tm host_time;
98         struct tm host_uptime;
99         char days_buf[16];
100         char hours_buf[16];
101         struct hostent *hp;
102         char *host;
103         statstime *host_stat = (statstime *)replyp;
104         time_t tmp_time_t;
105
106         if (search_host(raddrp->sin_addr))
107                 return(0);
108
109         hp = gethostbyaddr((char *)&raddrp->sin_addr.s_addr,
110                            sizeof(struct in_addr), AF_INET);
111         if (hp)
112                 host = hp->h_name;
113         else
114                 host = inet_ntoa(raddrp->sin_addr);
115
116         /* truncate hostname to fit nicely into field */
117         if (strlen(host) > HOST_WIDTH)
118                 host[HOST_WIDTH] = '\0';
119
120         printf("%-*s\t", HOST_WIDTH, host);
121
122         if (sizeof(time_t) == sizeof(host_stat->curtime.tv_sec)) {
123                 tmp_time = localtime((time_t *)&host_stat->curtime.tv_sec);
124                 host_time = *tmp_time;
125
126                 host_stat->curtime.tv_sec -= host_stat->boottime.tv_sec;
127
128                 tmp_time = gmtime((time_t *)&host_stat->curtime.tv_sec);
129                 host_uptime = *tmp_time;
130         }
131         else {                  /* non-32-bit time_t */
132                 tmp_time_t = host_stat->curtime.tv_sec;
133                 tmp_time = localtime(&tmp_time_t);
134                 host_time = *tmp_time;
135
136                 host_stat->curtime.tv_sec -= host_stat->boottime.tv_sec;
137
138                 tmp_time_t = host_stat->curtime.tv_sec;
139                 tmp_time = gmtime(&tmp_time_t);
140                 host_uptime = *tmp_time;
141         }
142
143         #define updays (host_stat->curtime.tv_sec  / 86400)
144         if (host_uptime.tm_yday != 0)
145                 sprintf(days_buf, "%3d day%s, ", updays,
146                         (updays > 1) ? "s" : "");
147         else
148                 days_buf[0] = '\0';
149
150         if (host_uptime.tm_hour != 0)
151                 sprintf(hours_buf, "%2d:%02d, ",
152                         host_uptime.tm_hour, host_uptime.tm_min);
153         else
154                 if (host_uptime.tm_min != 0)
155                         sprintf(hours_buf, "%2d mins, ", host_uptime.tm_min);
156                 else if (host_stat->curtime.tv_sec < 60)
157                         sprintf(hours_buf, "%2d secs, ", host_uptime.tm_sec);
158                 else
159                         hours_buf[0] = '\0';
160
161         printf(" %2d:%02d%cm  up %9.9s%9.9s load average: %.2f %.2f %.2f\n",
162                 (host_time.tm_hour % 12) ? host_time.tm_hour % 12 : 12,
163                 host_time.tm_min,
164                 (host_time.tm_hour >= 12) ? 'p' : 'a',
165                 days_buf,
166                 hours_buf,
167                 (double)host_stat->avenrun[0]/FSCALE,
168                 (double)host_stat->avenrun[1]/FSCALE,
169                 (double)host_stat->avenrun[2]/FSCALE);
170
171         remember_host(raddrp->sin_addr);
172         return(0);
173 }
174
175 static int
176 onehost(char *host)
177 {
178         CLIENT *rstat_clnt;
179         statstime host_stat;
180         struct sockaddr_in addr;
181         struct hostent *hp;
182         struct timeval tv;
183
184         hp = gethostbyname(host);
185         if (hp == NULL) {
186                 warnx("unknown host \"%s\"", host);
187                 return(-1);
188         }
189
190         rstat_clnt = clnt_create(host, RSTATPROG, RSTATVERS_TIME, "udp");
191         if (rstat_clnt == NULL) {
192                 warnx("%s %s", host, clnt_spcreateerror(""));
193                 return(-1);
194         }
195
196         bzero((char *)&host_stat, sizeof(host_stat));
197         tv.tv_sec = 15; /* XXX ??? */
198         tv.tv_usec = 0;
199         if (clnt_call(rstat_clnt, RSTATPROC_STATS,
200             (xdrproc_t)xdr_void, NULL,
201             (xdrproc_t)xdr_statstime, &host_stat, tv) != RPC_SUCCESS) {
202                 warnx("%s: %s", host, clnt_sperror(rstat_clnt, host));
203                 clnt_destroy(rstat_clnt);
204                 return(-1);
205         }
206
207         addr.sin_addr.s_addr = *(int *)hp->h_addr;
208         rstat_reply((caddr_t)&host_stat, &addr);
209         clnt_destroy(rstat_clnt);
210         return (0);
211 }
212
213 static void
214 allhosts(void)
215 {
216         statstime host_stat;
217         enum clnt_stat clnt_stat;
218
219         clnt_stat = clnt_broadcast(RSTATPROG, RSTATVERS_TIME, RSTATPROC_STATS,
220                                    (xdrproc_t)xdr_void, NULL,
221                                    (xdrproc_t)xdr_statstime, &host_stat,
222                                    (resultproc_t)rstat_reply);
223         if (clnt_stat != RPC_SUCCESS && clnt_stat != RPC_TIMEDOUT)
224                 errx(1, "%s", clnt_sperrno(clnt_stat));
225 }
226
227 static void
228 usage(void)
229 {
230         fprintf(stderr, "usage: rup [host ...]\n");
231         exit(1);
232 }
233
234 int
235 main(int argc, char *argv[])
236 {
237         int ch;
238
239         while ((ch = getopt(argc, argv, "?")) != -1)
240                 switch (ch) {
241                 default:
242                         usage();
243                         /*NOTREACHED*/
244                 }
245
246         setlinebuf(stdout);
247         if (argc == optind)
248                 allhosts();
249         else {
250                 for (; optind < argc; optind++)
251                         (void) onehost(argv[optind]);
252         }
253         exit(0);
254 }