Home | History | Annotate | Line # | Download | only in rup
rup.c revision 1.23 
      1 /*	$NetBSD: rup.c,v 1.23 2001/01/16 02:43:37 cgd 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 #include <sys/cdefs.h>
     37 #ifndef lint
     38 __RCSID("$NetBSD: rup.c,v 1.23 2001/01/16 02:43:37 cgd Exp $");
     39 #endif /* not lint */
     40 
     41 #include <sys/types.h>
     42 #include <sys/socket.h>
     43 #include <netinet/in.h>
     44 #include <arpa/inet.h>
     45 
     46 #include <err.h>
     47 #include <netdb.h>
     48 #include <rpc/rpc.h>
     49 #include <stdio.h>
     50 #include <stdlib.h>
     51 #include <string.h>
     52 #include <time.h>
     53 #include <unistd.h>
     54 
     55 #undef FSHIFT			/* Use protocol's shift and scale values */
     56 #undef FSCALE
     57 #include <rpcsvc/rstat.h>
     58 
     59 #define HOST_WIDTH 24
     60 
     61 int printtime;			/* print the remote host(s)'s time */
     62 
     63 struct host_list {
     64 	struct host_list *next;
     65 	int family;
     66 	union {
     67 		struct in6_addr _addr6;
     68 		struct in_addr _addr4;
     69 	} addr;
     70 } *hosts;
     71 
     72 #define addr6 addr._addr6
     73 #define addr4 addr._addr4
     74 
     75 int search_host(struct sockaddr *);
     76 void remember_host(struct sockaddr *);
     77 
     78 int
     79 search_host(struct sockaddr *sa)
     80 {
     81 	struct host_list *hp;
     82 
     83 	if (!hosts)
     84 		return(0);
     85 
     86 	for (hp = hosts; hp != NULL; hp = hp->next) {
     87 		switch (hp->family) {
     88 		case AF_INET6:
     89 			if (!memcmp(&hp->addr6,
     90 			    &((struct sockaddr_in6 *)sa)->sin6_addr,
     91 			    sizeof (struct in6_addr)))
     92 				return 1;
     93 			break;
     94 		case AF_INET:
     95 			if (!memcmp(&hp->addr4,
     96 			    &((struct sockaddr_in *)sa)->sin_addr,
     97 			    sizeof (struct in_addr)))
     98 				return 1;
     99 			break;
    100 		default:
    101 			break;
    102 		}
    103 	}
    104 	return(0);
    105 }
    106 
    107 void
    108 remember_host(struct sockaddr *sa)
    109 {
    110 	struct host_list *hp;
    111 
    112 	if (!(hp = (struct host_list *)malloc(sizeof(struct host_list)))) {
    113 		err(1, "malloc");
    114 		/* NOTREACHED */
    115 	}
    116 	hp->family = sa->sa_family;
    117 	hp->next = hosts;
    118 	switch (sa->sa_family) {
    119 	case AF_INET6:
    120 		memcpy(&hp->addr6, &((struct sockaddr_in6 *)sa)->sin6_addr,
    121 		    sizeof (struct in6_addr));
    122 		break;
    123 	case AF_INET:
    124 		memcpy(&hp->addr4, &((struct sockaddr_in *)sa)->sin_addr,
    125 		    sizeof (struct in_addr));
    126 		break;
    127 	default:
    128 		err(1, "unknown address family");
    129 		/* NOTREACHED */
    130 	}
    131 	hosts = hp;
    132 }
    133 
    134 struct rup_data {
    135 	const char *host;
    136 	struct statstime statstime;
    137 };
    138 struct rup_data *rup_data;
    139 int rup_data_idx = 0;
    140 int rup_data_max = 0;
    141 
    142 enum sort_type {
    143 	SORT_NONE,
    144 	SORT_HOST,
    145 	SORT_LDAV,
    146 	SORT_UPTIME
    147 };
    148 enum sort_type sort_type;
    149 
    150 int compare(struct rup_data *, struct rup_data *);
    151 void remember_rup_data(const char *, struct statstime *);
    152 int rstat_reply(char *, struct netbuf *, struct netconfig *);
    153 int print_rup_data(const char *, statstime *);
    154 void onehost(char *);
    155 void allhosts(void);
    156 int main(int, char *[]);
    157 void usage(void);
    158 
    159 int
    160 compare(struct rup_data *d1, struct rup_data *d2)
    161 {
    162 	switch(sort_type) {
    163 	case SORT_HOST:
    164 		return strcmp(d1->host, d2->host);
    165 	case SORT_LDAV:
    166 		return d1->statstime.avenrun[0]
    167 			- d2->statstime.avenrun[0];
    168 	case SORT_UPTIME:
    169 		return d1->statstime.boottime.tv_sec
    170 			- d2->statstime.boottime.tv_sec;
    171 	default:
    172 		/* something's really wrong here */
    173 		abort();
    174 	}
    175 }
    176 
    177 void
    178 remember_rup_data(const char *host, struct statstime *st)
    179 {
    180         if (rup_data_idx >= rup_data_max) {
    181                 rup_data_max += 16;
    182                 rup_data = realloc (rup_data,
    183 				rup_data_max * sizeof(struct rup_data));
    184                 if (rup_data == NULL) {
    185                         err (1, "realloc");
    186 			/* NOTREACHED */
    187                 }
    188         }
    189 
    190 	rup_data[rup_data_idx].host = strdup(host);
    191 	rup_data[rup_data_idx].statstime = *st;
    192 	rup_data_idx++;
    193 }
    194 
    195 
    196 int
    197 rstat_reply(char *replyp, struct netbuf *raddrp, struct netconfig *nconf)
    198 {
    199 	char host[NI_MAXHOST];
    200 	statstime *host_stat = (statstime *)replyp;
    201 	struct sockaddr *sa = raddrp->buf;
    202 
    203 	if (!search_host(sa)) {
    204 		if (getnameinfo(sa, sa->sa_len, host, sizeof host, NULL, 0, 0))
    205 			return 0;
    206 
    207 		remember_host(sa);
    208 
    209 		if (sort_type != SORT_NONE) {
    210 			remember_rup_data(host, host_stat);
    211 		} else {
    212 			print_rup_data(host, host_stat);
    213 		}
    214 	}
    215 
    216 	return (0);
    217 }
    218 
    219 
    220 int
    221 print_rup_data(const char *host, statstime *host_stat)
    222 {
    223 	struct tm *tmp_time;
    224 	struct tm host_time;
    225 	unsigned ups=0,upm=0,uph=0,upd=0;
    226 
    227 	char days_buf[16];
    228 	char hours_buf[16];
    229 
    230 	if (printtime)
    231 		printf("%-*.*s", HOST_WIDTH-4, HOST_WIDTH-4, host);
    232 	else
    233 		printf("%-*.*s", HOST_WIDTH, HOST_WIDTH, host);
    234 
    235 	tmp_time = localtime((time_t *)&host_stat->curtime.tv_sec);
    236 	host_time = *tmp_time;
    237 
    238 	host_stat->curtime.tv_sec -= host_stat->boottime.tv_sec;
    239 
    240 	ups=host_stat->curtime.tv_sec;
    241 	upd=ups/(3600*24);
    242 	ups-=upd*3600*24;
    243 	uph=ups/3600;
    244 	ups-=uph*3600;
    245 	upm=ups/60;
    246 
    247 	if (upd != 0)
    248 		sprintf(days_buf, "%3u day%s, ", upd,
    249 			(upd > 1) ? "s" : "");
    250 	else
    251 		days_buf[0] = '\0';
    252 
    253 	if (uph != 0)
    254 		sprintf(hours_buf, "%2u:%02u, ",
    255 			uph, upm);
    256 	else
    257 		if (upm != 0)
    258 			sprintf(hours_buf, "%2u min%s ", upm,
    259 			    (upm == 1) ? ", " : "s,");
    260 		else
    261 			hours_buf[0] = '\0';
    262 	if (printtime)
    263 		printf(" %2d:%02d%cm",
    264 		    (host_time.tm_hour % 12) ? (host_time.tm_hour % 12) : 12,
    265 		    host_time.tm_min, (host_time.tm_hour >= 12) ? 'p' : 'a');
    266 
    267 	printf(" up %9.9s%9.9s load average: %.2f %.2f %.2f\n",
    268 		days_buf, hours_buf,
    269 		(double)host_stat->avenrun[0]/FSCALE,
    270 		(double)host_stat->avenrun[1]/FSCALE,
    271 		(double)host_stat->avenrun[2]/FSCALE);
    272 
    273 	return(0);
    274 }
    275 
    276 
    277 void
    278 onehost(char *host)
    279 {
    280 	CLIENT *rstat_clnt;
    281 	statstime host_stat;
    282 	static struct timeval timeout = {25, 0};
    283 
    284 	rstat_clnt = clnt_create(host, RSTATPROG, RSTATVERS_TIME, "udp");
    285 	if (rstat_clnt == NULL) {
    286 		warnx("%s", clnt_spcreateerror(host));
    287 		return;
    288 	}
    289 
    290 	memset((char *)&host_stat, 0, sizeof(host_stat));
    291 	if (clnt_call(rstat_clnt, RSTATPROC_STATS, xdr_void, NULL, xdr_statstime, &host_stat, timeout) != RPC_SUCCESS) {
    292 		warnx("%s",  clnt_sperror(rstat_clnt, host));
    293 		return;
    294 	}
    295 
    296 	print_rup_data(host, &host_stat);
    297 	clnt_destroy(rstat_clnt);
    298 }
    299 
    300 void
    301 allhosts()
    302 {
    303 	statstime host_stat;
    304 	enum clnt_stat clnt_stat;
    305 	size_t i;
    306 
    307 	if (sort_type != SORT_NONE) {
    308 		printf("collecting responses...");
    309 		fflush(stdout);
    310 	}
    311 
    312 	clnt_stat = rpc_broadcast(RSTATPROG, RSTATVERS_TIME, RSTATPROC_STATS,
    313 				   xdr_void, NULL,
    314 				   xdr_statstime, (char*)&host_stat,
    315 				   (resultproc_t)rstat_reply, "udp");
    316 	if (clnt_stat != RPC_SUCCESS && clnt_stat != RPC_TIMEDOUT) {
    317 		warnx("%s", clnt_sperrno(clnt_stat));
    318 		exit(1);
    319 	}
    320 
    321 	if (sort_type != SORT_NONE) {
    322 		putchar('\n');
    323 		qsort(rup_data, rup_data_idx, sizeof(struct rup_data),
    324 		      (int (*)(const void*, const void*))compare);
    325 
    326 		for (i = 0; i < rup_data_idx; i++) {
    327 			print_rup_data(rup_data[i].host, &rup_data[i].statstime);
    328 		}
    329 	}
    330 }
    331 
    332 int
    333 main(int argc, char *argv[])
    334 {
    335 	int ch;
    336 
    337 	sort_type = SORT_NONE;
    338 	while ((ch = getopt(argc, argv, "dhlt")) != -1)
    339 		switch (ch) {
    340 		case 'd':
    341 			printtime = 1;
    342 			break;
    343 		case 'h':
    344 			sort_type = SORT_HOST;
    345 			break;
    346 		case 'l':
    347 			sort_type = SORT_LDAV;
    348 			break;
    349 		case 't':
    350 			sort_type = SORT_UPTIME;
    351 			break;
    352 		default:
    353 			usage();
    354 			/*NOTREACHED*/
    355 		}
    356 
    357 	setlinebuf(stdout);
    358 
    359 	if (argc == optind)
    360 		allhosts();
    361 	else {
    362 		for (; optind < argc; optind++)
    363 			onehost(argv[optind]);
    364 	}
    365 
    366 	exit(0);
    367 }
    368 
    369 void
    370 usage()
    371 {
    372 	fprintf(stderr, "Usage: rup [-dhlt] [hosts ...]\n");
    373 	exit(1);
    374 }
    375