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 * $FreeBSD: src/usr.bin/rup/rup.c,v 1.11.2.2 2001/07/02 23:43:04 mikeh Exp $ 34 * $DragonFly: src/usr.bin/rup/rup.c,v 1.4 2005/02/23 17:44:18 liamfoy Exp $ 35 */ 36 #include <sys/param.h> 37 #include <sys/socket.h> 38 39 #include <arpa/inet.h> 40 #include <rpc/rpc.h> 41 #include <rpc/pmap_clnt.h> 42 #undef FSHIFT /* Use protocol's shift and scale values */ 43 #undef FSCALE 44 #include <rpcsvc/rstat.h> 45 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 54 #define HOST_WIDTH 15 55 56 struct host_list { 57 struct host_list *next; 58 struct in_addr addr; 59 } *hosts; 60 61 static int 62 search_host(struct in_addr addr) 63 { 64 struct host_list *hp; 65 66 if (hosts == NULL) 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 76 static void 77 remember_host(struct in_addr addr) 78 { 79 struct host_list *hp; 80 81 if ((hp = malloc(sizeof(struct host_list))) == NULL) 82 err(1, "malloc failed"); 83 hp->addr.s_addr = addr.s_addr; 84 hp->next = hosts; 85 hosts = hp; 86 } 87 88 static int 89 rstat_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); 102 103 hp = gethostbyaddr((char *)&raddrp->sin_addr.s_addr, 104 sizeof(struct in_addr), AF_INET); 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) 126 snprintf(days_buf, sizeof days_buf, "%3d day%s, ", updays, 127 (updays > 1) ? "s" : ""); 128 else 129 days_buf[0] = '\0'; 130 131 if (host_uptime.tm_hour != 0) 132 snprintf(hours_buf, sizeof hours_buf, "%2d:%02d, ", 133 host_uptime.tm_hour, host_uptime.tm_min); 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); 140 else 141 hours_buf[0] = '\0'; 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 } 156 157 static int 158 onehost(const char *host) 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) { 168 herror("rup"); 169 return(-1); 170 } 171 172 rstat_clnt = clnt_create(host, RSTATPROG, RSTATVERS_TIME, "udp"); 173 if (rstat_clnt == NULL) { 174 clnt_pcreateerror(host); 175 return(-1); 176 } 177 178 bzero(&host_stat, sizeof(host_stat)); 179 tv.tv_sec = 15; /* XXX ??? */ 180 tv.tv_usec = 0; 181 if (clnt_call(rstat_clnt, RSTATPROC_STATS, xdr_void, NULL, (xdrproc_t)xdr_statstime, &host_stat, tv) != RPC_SUCCESS) { 182 clnt_perror(rstat_clnt, host); 183 clnt_destroy(rstat_clnt); 184 return(-1); 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 } 192 193 static void 194 allhosts(void) 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, 201 (xdrproc_t)xdr_statstime, (char *)&host_stat, rstat_reply); 202 if (clnt_stat != RPC_SUCCESS && clnt_stat != RPC_TIMEDOUT) 203 errx(1, "%s", clnt_sperrno(clnt_stat)); 204 } 205 206 static void 207 usage(void) 208 { 209 fprintf(stderr, "usage: rup [hosts ...]\n"); 210 exit(1); 211 } 212 213 int 214 main(int argc, char *argv[]) 215 { 216 int ch; 217 218 while ((ch = getopt(argc, argv, "")) != -1) 219 switch (ch) { 220 default: 221 usage(); 222 /*NOTREACHED*/ 223 } 224 225 setlinebuf(stdout); 226 if (argc == optind) 227 allhosts(); 228 else { 229 for (; optind < argc; optind++) 230 (void) onehost(argv[optind]); 231 } 232 exit(0); 233 } 234