1 /* $OpenBSD: rup.c,v 1.19 2003/10/07 17:18:44 tedu Exp $ */ 2 3 /*- 4 * Copyright (c) 1993, John Brezak 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #ifndef lint 37 static char rcsid[] = "$OpenBSD: rup.c,v 1.19 2003/10/07 17:18:44 tedu Exp $"; 38 #endif /* not lint */ 39 40 #include <stdio.h> 41 #include <stdlib.h> 42 #include <string.h> 43 #include <time.h> 44 #include <sys/param.h> 45 #include <sys/socket.h> 46 #include <netdb.h> 47 #include <rpc/rpc.h> 48 #include <rpc/pmap_clnt.h> 49 #include <arpa/inet.h> 50 #include <err.h> 51 52 #undef FSHIFT /* Use protocol's shift and scale values */ 53 #undef FSCALE 54 #include <rpcsvc/rstat.h> 55 56 #define HOST_WIDTH 27 57 58 int printtime; /* print the remote host(s)'s time */ 59 60 struct host_list { 61 struct host_list *next; 62 struct in_addr addr; 63 } *hosts; 64 65 void usage(void); 66 int print_rup_data(char *, statstime *host_stat); 67 68 static int 69 search_host(struct in_addr addr) 70 { 71 struct host_list *hp; 72 73 if (!hosts) 74 return(0); 75 76 for (hp = hosts; hp != NULL; hp = hp->next) { 77 if (hp->addr.s_addr == addr.s_addr) 78 return(1); 79 } 80 return(0); 81 } 82 83 static void 84 remember_host(struct in_addr addr) 85 { 86 struct host_list *hp; 87 88 if (!(hp = (struct host_list *)malloc(sizeof(struct host_list)))) { 89 err(1, NULL); 90 /* NOTREACHED */ 91 } 92 hp->addr.s_addr = addr.s_addr; 93 hp->next = hosts; 94 hosts = hp; 95 } 96 97 98 struct rup_data { 99 char *host; 100 struct statstime statstime; 101 }; 102 struct rup_data *rup_data; 103 int rup_data_idx = 0; 104 int rup_data_max = 0; 105 106 enum sort_type { 107 SORT_NONE, 108 SORT_HOST, 109 SORT_LDAV, 110 SORT_UPTIME 111 }; 112 enum sort_type sort_type; 113 114 static int 115 compare(const void *v1, const void *v2) 116 { 117 const struct rup_data *d1 = v1; 118 const struct rup_data *d2 = v2; 119 120 switch(sort_type) { 121 case SORT_HOST: 122 return strcmp(d1->host, d2->host); 123 case SORT_LDAV: 124 return d1->statstime.avenrun[0] 125 - d2->statstime.avenrun[0]; 126 case SORT_UPTIME: 127 return d1->statstime.boottime.tv_sec 128 - d2->statstime.boottime.tv_sec; 129 default: 130 /* something's really wrong here */ 131 abort(); 132 } 133 } 134 135 static void 136 remember_rup_data(char *host, struct statstime *st) 137 { 138 if (rup_data_idx >= rup_data_max) { 139 int newsize; 140 struct rup_data *newrup; 141 142 newsize = rup_data_max + 16; 143 newrup = realloc(rup_data, newsize * sizeof(struct rup_data)); 144 if (newrup == NULL) { 145 err(1, NULL); 146 /* NOTREACHED */ 147 } 148 rup_data = newrup; 149 rup_data_max = newsize; 150 } 151 152 if ((rup_data[rup_data_idx].host = strdup(host)) == NULL) 153 err(1, NULL); 154 rup_data[rup_data_idx].statstime = *st; 155 rup_data_idx++; 156 } 157 158 159 static int 160 rstat_reply(char *replyp, struct sockaddr_in *raddrp) 161 { 162 struct hostent *hp; 163 char *host; 164 statstime *host_stat = (statstime *)replyp; 165 166 if (!search_host(raddrp->sin_addr)) { 167 hp = gethostbyaddr((char *)&raddrp->sin_addr.s_addr, 168 sizeof(struct in_addr), AF_INET); 169 if (hp) 170 host = hp->h_name; 171 else 172 host = inet_ntoa(raddrp->sin_addr); 173 174 remember_host(raddrp->sin_addr); 175 176 if (sort_type != SORT_NONE) 177 remember_rup_data(host, host_stat); 178 else 179 print_rup_data(host, host_stat); 180 } 181 182 return (0); 183 } 184 185 186 int 187 print_rup_data(char *host, statstime *host_stat) 188 { 189 unsigned int ups = 0, upm = 0, uph = 0, upd = 0; 190 struct tm *tmp_time, host_time; 191 char days_buf[16], hours_buf[16]; 192 193 if (printtime) 194 printf("%-*.*s", HOST_WIDTH-8, HOST_WIDTH-8, host); 195 else 196 printf("%-*.*s", HOST_WIDTH, HOST_WIDTH, host); 197 198 tmp_time = localtime((time_t *)&host_stat->curtime.tv_sec); 199 host_time = *tmp_time; 200 201 host_stat->curtime.tv_sec -= host_stat->boottime.tv_sec; 202 203 if (host_stat->curtime.tv_sec > 0) 204 ups=host_stat->curtime.tv_sec; 205 upd=ups/(3600*24); 206 ups-=upd*3600*24; 207 uph=ups/3600; 208 ups-=uph*3600; 209 upm=ups/60; 210 211 if (upd != 0) 212 snprintf(days_buf, sizeof days_buf, "%3u day%s, ", upd, 213 (upd > 1) ? "s" : ""); 214 else 215 days_buf[0] = '\0'; 216 217 if (uph != 0) 218 snprintf(hours_buf, sizeof hours_buf, "%2u:%02u, ", 219 uph, upm); 220 else 221 if (upm != 0) 222 snprintf(hours_buf, sizeof hours_buf, "%2u min%s ", 223 upm, (upm == 1) ? ", " : "s,"); 224 else 225 hours_buf[0] = '\0'; 226 227 if (printtime) 228 printf(" %2d:%02d%cm", 229 (host_time.tm_hour % 12) ? (host_time.tm_hour % 12) : 12, 230 host_time.tm_min, 231 (host_time.tm_hour >= 12) ? 'p' : 'a'); 232 233 printf(" up %9.9s%9.9s load average: %.2f %.2f %.2f\n", 234 days_buf, hours_buf, 235 (double)host_stat->avenrun[0]/FSCALE, 236 (double)host_stat->avenrun[1]/FSCALE, 237 (double)host_stat->avenrun[2]/FSCALE); 238 239 return(0); 240 } 241 242 243 static void 244 onehost(char *host) 245 { 246 CLIENT *rstat_clnt; 247 statstime host_stat; 248 static struct timeval timeout = {25, 0}; 249 extern char *__progname; 250 251 rstat_clnt = clnt_create(host, RSTATPROG, RSTATVERS_TIME, "udp"); 252 if (rstat_clnt == NULL) { 253 fprintf(stderr, "%s: %s", __progname, 254 clnt_spcreateerror(host)); 255 return; 256 } 257 258 bzero((char *)&host_stat, sizeof(host_stat)); 259 if (clnt_call(rstat_clnt, RSTATPROC_STATS, xdr_void, NULL, 260 xdr_statstime, &host_stat, timeout) != RPC_SUCCESS) { 261 fprintf(stderr, "%s: %s", __progname, 262 clnt_sperror(rstat_clnt, host)); 263 clnt_destroy(rstat_clnt); 264 return; 265 } 266 267 print_rup_data(host, &host_stat); 268 clnt_destroy(rstat_clnt); 269 } 270 271 static void 272 allhosts(void) 273 { 274 statstime host_stat; 275 enum clnt_stat clnt_stat; 276 extern char *__progname; 277 size_t i; 278 279 if (sort_type != SORT_NONE) { 280 printf("collecting responses..."); 281 fflush(stdout); 282 } 283 284 clnt_stat = clnt_broadcast(RSTATPROG, RSTATVERS_TIME, RSTATPROC_STATS, 285 xdr_void, NULL, xdr_statstime, (char *)&host_stat, rstat_reply); 286 if (clnt_stat != RPC_SUCCESS && clnt_stat != RPC_TIMEDOUT) { 287 fprintf(stderr, "%s: %s\n", __progname, clnt_sperrno(clnt_stat)); 288 exit(1); 289 } 290 291 if (sort_type != SORT_NONE) { 292 putchar('\n'); 293 qsort(rup_data, rup_data_idx, sizeof(struct rup_data), 294 compare); 295 296 for (i = 0; i < rup_data_idx; i++) { 297 print_rup_data(rup_data[i].host, 298 &rup_data[i].statstime); 299 } 300 } 301 } 302 303 int 304 main(int argc, char *argv[]) 305 { 306 int ch; 307 extern int optind; 308 309 sort_type = SORT_NONE; 310 while ((ch = getopt(argc, argv, "dhlt")) != -1) 311 switch (ch) { 312 case 'd': 313 printtime = 1; 314 break; 315 case 'h': 316 sort_type = SORT_HOST; 317 break; 318 case 'l': 319 sort_type = SORT_LDAV; 320 break; 321 case 't': 322 sort_type = SORT_UPTIME; 323 break; 324 default: 325 usage(); 326 /*NOTREACHED*/ 327 } 328 329 setlinebuf(stdout); 330 331 if (argc == optind) 332 allhosts(); 333 else { 334 for (; optind < argc; optind++) 335 onehost(argv[optind]); 336 } 337 338 exit(0); 339 } 340 341 342 void 343 usage(void) 344 { 345 fprintf(stderr, "Usage: rup [-dhlt] [hosts ...]\n"); 346 exit(1); 347 } 348