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