1/* $OpenBSD: rup.c,v 1.31 2017/03/20 16:10:10 deraadt 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. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31#include <stdio.h> 32#include <stdlib.h> 33#include <string.h> 34#include <time.h> 35#include <sys/socket.h> 36#include <netdb.h> 37#include <rpc/rpc.h> 38#include <rpc/pmap_clnt.h> 39#include <arpa/inet.h> 40#include <err.h> 41#include <unistd.h> 42 43#undef FSHIFT /* Use protocol's shift and scale values */ 44#undef FSCALE 45#include <rpcsvc/rstat.h> 46 47#define HOST_WIDTH 27 48 49int printtime; /* print the remote host(s)'s time */ 50 51struct host_list { 52 struct host_list *next; 53 struct in_addr addr; 54} *hosts; 55 56void usage(void); 57int print_rup_data(char *, statstime *host_stat); 58 59static int 60search_host(struct in_addr addr) 61{ 62 struct host_list *hp; 63 64 if (!hosts) 65 return(0); 66 67 for (hp = hosts; hp != NULL; hp = hp->next) { 68 if (hp->addr.s_addr == addr.s_addr) 69 return(1); 70 } 71 return(0); 72} 73 74static void 75remember_host(struct in_addr addr) 76{ 77 struct host_list *hp; 78 79 if (!(hp = malloc(sizeof(struct host_list)))) { 80 err(1, NULL); 81 /* NOTREACHED */ 82 } 83 hp->addr.s_addr = addr.s_addr; 84 hp->next = hosts; 85 hosts = hp; 86} 87 88 89struct rup_data { 90 char *host; 91 struct statstime statstime; 92}; 93struct rup_data *rup_data; 94int rup_data_idx = 0; 95int rup_data_max = 0; 96 97enum sort_type { 98 SORT_NONE, 99 SORT_HOST, 100 SORT_LDAV, 101 SORT_UPTIME 102}; 103enum sort_type sort_type; 104 105static int 106compare(const void *v1, const void *v2) 107{ 108 const struct rup_data *d1 = v1; 109 const struct rup_data *d2 = v2; 110 111 switch(sort_type) { 112 case SORT_HOST: 113 return strcmp(d1->host, d2->host); 114 case SORT_LDAV: 115 return d1->statstime.avenrun[0] 116 - d2->statstime.avenrun[0]; 117 case SORT_UPTIME: 118 return d1->statstime.boottime.tv_sec 119 - d2->statstime.boottime.tv_sec; 120 default: 121 /* something's really wrong here */ 122 abort(); 123 } 124} 125 126static void 127remember_rup_data(char *host, struct statstime *st) 128{ 129 if (rup_data_idx >= rup_data_max) { 130 int newsize; 131 struct rup_data *newrup; 132 133 newsize = rup_data_max + 16; 134 newrup = recallocarray(rup_data, rup_data_max, newsize, 135 sizeof(struct rup_data)); 136 if (newrup == NULL) { 137 err(1, NULL); 138 /* NOTREACHED */ 139 } 140 rup_data = newrup; 141 rup_data_max = newsize; 142 } 143 144 if ((rup_data[rup_data_idx].host = strdup(host)) == NULL) 145 err(1, NULL); 146 rup_data[rup_data_idx].statstime = *st; 147 rup_data_idx++; 148} 149 150 151static int 152rstat_reply(char *replyp, struct sockaddr_in *raddrp) 153{ 154 struct hostent *hp; 155 char *host; 156 statstime *host_stat = (statstime *)replyp; 157 158 if (!search_host(raddrp->sin_addr)) { 159 hp = gethostbyaddr((char *)&raddrp->sin_addr.s_addr, 160 sizeof(struct in_addr), AF_INET); 161 if (hp) 162 host = hp->h_name; 163 else 164 host = inet_ntoa(raddrp->sin_addr); 165 166 remember_host(raddrp->sin_addr); 167 168 if (sort_type != SORT_NONE) 169 remember_rup_data(host, host_stat); 170 else 171 print_rup_data(host, host_stat); 172 } 173 174 return (0); 175} 176 177 178int 179print_rup_data(char *host, statstime *host_stat) 180{ 181 unsigned int ups = 0, upm = 0, uph = 0, upd = 0; 182 struct tm *tmp_time, host_time; 183 char days_buf[16], hours_buf[16]; 184 time_t tim; 185 186 if (printtime) 187 printf("%-*.*s", HOST_WIDTH-8, HOST_WIDTH-8, host); 188 else 189 printf("%-*.*s", HOST_WIDTH, HOST_WIDTH, host); 190 191 tim = host_stat->curtime.tv_sec; 192 tmp_time = localtime(&tim); 193 host_time = *tmp_time; 194 195 host_stat->curtime.tv_sec -= host_stat->boottime.tv_sec; 196 197 if (host_stat->curtime.tv_sec > 0) 198 ups = host_stat->curtime.tv_sec; 199 upd = ups / (3600 * 24); 200 ups -= upd * 3600 * 24; 201 uph = ups / 3600; 202 ups -= uph * 3600; 203 upm = ups / 60; 204 205 if (upd != 0) 206 snprintf(days_buf, sizeof days_buf, "%3u day%s, ", upd, 207 (upd > 1) ? "s" : ""); 208 else 209 days_buf[0] = '\0'; 210 211 if (uph != 0) 212 snprintf(hours_buf, sizeof hours_buf, "%2u:%02u, ", 213 uph, upm); 214 else 215 if (upm != 0) 216 snprintf(hours_buf, sizeof hours_buf, "%2u min%s ", 217 upm, (upm == 1) ? ", " : "s,"); 218 else 219 hours_buf[0] = '\0'; 220 221 if (printtime) 222 printf(" %2d:%02d%cm", 223 (host_time.tm_hour % 12) ? (host_time.tm_hour % 12) : 12, 224 host_time.tm_min, 225 (host_time.tm_hour >= 12) ? 'p' : 'a'); 226 227 printf(" up %9.9s%9.9s load average: %.2f %.2f %.2f\n", 228 days_buf, hours_buf, 229 (double)host_stat->avenrun[0] / FSCALE, 230 (double)host_stat->avenrun[1] / FSCALE, 231 (double)host_stat->avenrun[2] / FSCALE); 232 233 return(0); 234} 235 236 237static void 238onehost(char *host) 239{ 240 CLIENT *rstat_clnt; 241 statstime host_stat; 242 static struct timeval timeout = {25, 0}; 243 extern char *__progname; 244 245 rstat_clnt = clnt_create(host, RSTATPROG, RSTATVERS_TIME, "udp"); 246 if (rstat_clnt == NULL) { 247 fprintf(stderr, "%s: %s", __progname, 248 clnt_spcreateerror(host)); 249 return; 250 } 251 252 bzero((char *)&host_stat, sizeof(host_stat)); 253 if (clnt_call(rstat_clnt, RSTATPROC_STATS, xdr_void, NULL, 254 xdr_statstime, &host_stat, timeout) != RPC_SUCCESS) { 255 fprintf(stderr, "%s: %s", __progname, 256 clnt_sperror(rstat_clnt, host)); 257 clnt_destroy(rstat_clnt); 258 return; 259 } 260 261 if (sort_type != SORT_NONE) 262 remember_rup_data(host, &host_stat); 263 else 264 print_rup_data(host, &host_stat); 265 266 clnt_destroy(rstat_clnt); 267} 268 269static void 270allhosts(void) 271{ 272 statstime host_stat; 273 enum clnt_stat clnt_stat; 274 extern char *__progname; 275 276 if (sort_type != SORT_NONE) { 277 printf("collecting responses...\n"); 278 fflush(stdout); 279 } 280 281 clnt_stat = clnt_broadcast(RSTATPROG, RSTATVERS_TIME, RSTATPROC_STATS, 282 xdr_void, NULL, xdr_statstime, (char *)&host_stat, rstat_reply); 283 if (clnt_stat != RPC_SUCCESS && clnt_stat != RPC_TIMEDOUT) { 284 fprintf(stderr, "%s: %s\n", __progname, clnt_sperrno(clnt_stat)); 285 exit(1); 286 } 287} 288 289int 290main(int argc, char *argv[]) 291{ 292 int ch; 293 size_t i; 294 extern int optind; 295 296 sort_type = SORT_NONE; 297 while ((ch = getopt(argc, argv, "dhlt")) != -1) 298 switch (ch) { 299 case 'd': 300 printtime = 1; 301 break; 302 case 'h': 303 sort_type = SORT_HOST; 304 break; 305 case 'l': 306 sort_type = SORT_LDAV; 307 break; 308 case 't': 309 sort_type = SORT_UPTIME; 310 break; 311 default: 312 usage(); 313 /*NOTREACHED*/ 314 } 315 316 setvbuf(stdout, NULL, _IOLBF, 0); 317 318 if (argc == optind) 319 allhosts(); 320 else { 321 for (; optind < argc; optind++) 322 onehost(argv[optind]); 323 } 324 325 if (sort_type != SORT_NONE) { 326 qsort(rup_data, rup_data_idx, sizeof(struct rup_data), 327 compare); 328 329 for (i = 0; i < rup_data_idx; i++) { 330 print_rup_data(rup_data[i].host, 331 &rup_data[i].statstime); 332 } 333 } 334 335 exit(0); 336} 337 338 339void 340usage(void) 341{ 342 fprintf(stderr, "usage: rup [-dhlt] [host ...]\n"); 343 exit(1); 344} 345