rup.c revision 85039
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#ifndef lint 35static const char rcsid[] = 36 "$FreeBSD: head/usr.bin/rup/rup.c 85039 2001-10-17 01:44:34Z fenner $"; 37#endif /* not lint */ 38 39#include <err.h> 40#include <stdio.h> 41#include <stdlib.h> 42#include <string.h> 43#include <time.h> 44#include <unistd.h> 45#include <sys/param.h> 46#include <sys/socket.h> 47#include <netdb.h> 48#include <rpc/rpc.h> 49#include <rpc/pmap_clnt.h> 50#include <arpa/inet.h> 51#undef FSHIFT /* Use protocol's shift and scale values */ 52#undef FSCALE 53#include <rpcsvc/rstat.h> 54 55#define HOST_WIDTH 15 56 57struct host_list { 58 struct host_list *next; 59 struct in_addr addr; 60} *hosts; 61 62int search_host(struct in_addr addr) 63{ 64 struct host_list *hp; 65 66 if (!hosts) 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 76void remember_host(struct in_addr addr) 77{ 78 struct host_list *hp; 79 80 if (!(hp = (struct host_list *)malloc(sizeof(struct host_list)))) 81 errx(1, "no memory"); 82 hp->addr.s_addr = addr.s_addr; 83 hp->next = hosts; 84 hosts = hp; 85} 86 87int 88rstat_reply(caddr_t replyp, struct sockaddr_in *raddrp) 89{ 90 struct tm *tmp_time; 91 struct tm host_time; 92 struct tm host_uptime; 93 char days_buf[16]; 94 char hours_buf[16]; 95 struct hostent *hp; 96 char *host; 97 statstime *host_stat = (statstime *)replyp; 98 99 if (search_host(raddrp->sin_addr)) 100 return(0); 101 102 hp = gethostbyaddr((char *)&raddrp->sin_addr.s_addr, 103 sizeof(struct in_addr), AF_INET); 104 if (hp) 105 host = hp->h_name; 106 else 107 host = inet_ntoa(raddrp->sin_addr); 108 109 /* truncate hostname to fit nicely into field */ 110 if (strlen(host) > HOST_WIDTH) 111 host[HOST_WIDTH] = '\0'; 112 113 printf("%-*s\t", HOST_WIDTH, host); 114 115 tmp_time = localtime((time_t *)&host_stat->curtime.tv_sec); 116 host_time = *tmp_time; 117 118 host_stat->curtime.tv_sec -= host_stat->boottime.tv_sec; 119 120 tmp_time = gmtime((time_t *)&host_stat->curtime.tv_sec); 121 host_uptime = *tmp_time; 122 123 #define updays (host_stat->curtime.tv_sec / 86400) 124 if (host_uptime.tm_yday != 0) 125 sprintf(days_buf, "%3d day%s, ", updays, 126 (updays > 1) ? "s" : ""); 127 else 128 days_buf[0] = '\0'; 129 130 if (host_uptime.tm_hour != 0) 131 sprintf(hours_buf, "%2d:%02d, ", 132 host_uptime.tm_hour, host_uptime.tm_min); 133 else 134 if (host_uptime.tm_min != 0) 135 sprintf(hours_buf, "%2d mins, ", host_uptime.tm_min); 136 else if (host_stat->curtime.tv_sec < 60) 137 sprintf(hours_buf, "%2d secs, ", host_uptime.tm_sec); 138 else 139 hours_buf[0] = '\0'; 140 141 printf(" %2d:%02d%cm up %9.9s%9.9s load average: %.2f %.2f %.2f\n", 142 (host_time.tm_hour % 12) ? host_time.tm_hour % 12 : 12, 143 host_time.tm_min, 144 (host_time.tm_hour >= 12) ? 'p' : 'a', 145 days_buf, 146 hours_buf, 147 (double)host_stat->avenrun[0]/FSCALE, 148 (double)host_stat->avenrun[1]/FSCALE, 149 (double)host_stat->avenrun[2]/FSCALE); 150 151 remember_host(raddrp->sin_addr); 152 return(0); 153} 154 155int 156onehost(char *host) 157{ 158 CLIENT *rstat_clnt; 159 statstime host_stat; 160 struct sockaddr_in addr; 161 struct hostent *hp; 162 struct timeval tv; 163 164 hp = gethostbyname(host); 165 if (hp == NULL) { 166 warnx("unknown host \"%s\"", host); 167 return(-1); 168 } 169 170 rstat_clnt = clnt_create(host, RSTATPROG, RSTATVERS_TIME, "udp"); 171 if (rstat_clnt == NULL) { 172 warnx("%s %s", host, clnt_spcreateerror("")); 173 return(-1); 174 } 175 176 bzero((char *)&host_stat, sizeof(host_stat)); 177 tv.tv_sec = 15; /* XXX ??? */ 178 tv.tv_usec = 0; 179 if (clnt_call(rstat_clnt, RSTATPROC_STATS, xdr_void, NULL, xdr_statstime, &host_stat, tv) != RPC_SUCCESS) { 180 warnx("%s: %s", host, clnt_sperror(rstat_clnt, host)); 181 clnt_destroy(rstat_clnt); 182 return(-1); 183 } 184 185 addr.sin_addr.s_addr = *(int *)hp->h_addr; 186 rstat_reply((caddr_t)&host_stat, &addr); 187 clnt_destroy(rstat_clnt); 188 return (0); 189} 190 191void 192allhosts() 193{ 194 statstime host_stat; 195 enum clnt_stat clnt_stat; 196 197 clnt_stat = clnt_broadcast(RSTATPROG, RSTATVERS_TIME, RSTATPROC_STATS, 198 xdr_void, NULL, 199 xdr_statstime, (char *)&host_stat, rstat_reply); 200 if (clnt_stat != RPC_SUCCESS && clnt_stat != RPC_TIMEDOUT) 201 errx(1, "%s", clnt_sperrno(clnt_stat)); 202} 203 204static void 205usage() 206{ 207 fprintf(stderr, "usage: rup [hosts ...]\n"); 208 exit(1); 209} 210 211int 212main(int argc, char *argv[]) 213{ 214 int ch; 215 216 while ((ch = getopt(argc, argv, "?")) != -1) 217 switch (ch) { 218 default: 219 usage(); 220 /*NOTREACHED*/ 221 } 222 223 setlinebuf(stdout); 224 if (argc == optind) 225 allhosts(); 226 else { 227 for (; optind < argc; optind++) 228 (void) onehost(argv[optind]); 229 } 230 exit(0); 231} 232