/usr.bin/rup/rup.c
https://bitbucket.org/freebsd/freebsd-head/ · C · 254 lines · 180 code · 40 blank · 34 comment · 37 complexity · b1f65da25ad85ac59b052a83ecae36d0 MD5 · raw file
- /*-
- * Copyright (c) 1993, John Brezak
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
- #include <sys/cdefs.h>
- __FBSDID("$FreeBSD$");
- #include <sys/param.h>
- #include <sys/socket.h>
- #include <rpc/rpc.h>
- #include <rpc/pmap_clnt.h>
- #undef FSHIFT /* Use protocol's shift and scale values */
- #undef FSCALE
- #include <rpcsvc/rstat.h>
- #include <arpa/inet.h>
- #include <err.h>
- #include <netdb.h>
- #include <stdio.h>
- #include <string.h>
- #include <stdlib.h>
- #include <time.h>
- #include <unistd.h>
- #define HOST_WIDTH 15
- struct host_list {
- struct host_list *next;
- struct in_addr addr;
- } *hosts;
- static int
- search_host(struct in_addr addr)
- {
- struct host_list *hp;
- if (!hosts)
- return(0);
- for (hp = hosts; hp != NULL; hp = hp->next) {
- if (hp->addr.s_addr == addr.s_addr)
- return(1);
- }
- return(0);
- }
- static void
- remember_host(struct in_addr addr)
- {
- struct host_list *hp;
- if (!(hp = (struct host_list *)malloc(sizeof(struct host_list))))
- errx(1, "no memory");
- hp->addr.s_addr = addr.s_addr;
- hp->next = hosts;
- hosts = hp;
- }
- static bool_t
- rstat_reply(caddr_t replyp, struct sockaddr_in *raddrp)
- {
- struct tm *tmp_time;
- struct tm host_time;
- struct tm host_uptime;
- char days_buf[16];
- char hours_buf[16];
- struct hostent *hp;
- char *host;
- statstime *host_stat = (statstime *)replyp;
- time_t tmp_time_t;
- if (search_host(raddrp->sin_addr))
- return(0);
- hp = gethostbyaddr((char *)&raddrp->sin_addr.s_addr,
- sizeof(struct in_addr), AF_INET);
- if (hp)
- host = hp->h_name;
- else
- host = inet_ntoa(raddrp->sin_addr);
- /* truncate hostname to fit nicely into field */
- if (strlen(host) > HOST_WIDTH)
- host[HOST_WIDTH] = '\0';
- printf("%-*s\t", HOST_WIDTH, host);
- if (sizeof(time_t) == sizeof(host_stat->curtime.tv_sec)) {
- tmp_time = localtime((time_t *)&host_stat->curtime.tv_sec);
- host_time = *tmp_time;
- host_stat->curtime.tv_sec -= host_stat->boottime.tv_sec;
- tmp_time = gmtime((time_t *)&host_stat->curtime.tv_sec);
- host_uptime = *tmp_time;
- }
- else { /* non-32-bit time_t */
- tmp_time_t = host_stat->curtime.tv_sec;
- tmp_time = localtime(&tmp_time_t);
- host_time = *tmp_time;
- host_stat->curtime.tv_sec -= host_stat->boottime.tv_sec;
- tmp_time_t = host_stat->curtime.tv_sec;
- tmp_time = gmtime(&tmp_time_t);
- host_uptime = *tmp_time;
- }
- #define updays (host_stat->curtime.tv_sec / 86400)
- if (host_uptime.tm_yday != 0)
- sprintf(days_buf, "%3d day%s, ", updays,
- (updays > 1) ? "s" : "");
- else
- days_buf[0] = '\0';
- if (host_uptime.tm_hour != 0)
- sprintf(hours_buf, "%2d:%02d, ",
- host_uptime.tm_hour, host_uptime.tm_min);
- else
- if (host_uptime.tm_min != 0)
- sprintf(hours_buf, "%2d mins, ", host_uptime.tm_min);
- else if (host_stat->curtime.tv_sec < 60)
- sprintf(hours_buf, "%2d secs, ", host_uptime.tm_sec);
- else
- hours_buf[0] = '\0';
- printf(" %2d:%02d%cm up %9.9s%9.9s load average: %.2f %.2f %.2f\n",
- (host_time.tm_hour % 12) ? host_time.tm_hour % 12 : 12,
- host_time.tm_min,
- (host_time.tm_hour >= 12) ? 'p' : 'a',
- days_buf,
- hours_buf,
- (double)host_stat->avenrun[0]/FSCALE,
- (double)host_stat->avenrun[1]/FSCALE,
- (double)host_stat->avenrun[2]/FSCALE);
- remember_host(raddrp->sin_addr);
- return(0);
- }
- static int
- onehost(char *host)
- {
- CLIENT *rstat_clnt;
- statstime host_stat;
- struct sockaddr_in addr;
- struct hostent *hp;
- struct timeval tv;
- hp = gethostbyname(host);
- if (hp == NULL) {
- warnx("unknown host \"%s\"", host);
- return(-1);
- }
- rstat_clnt = clnt_create(host, RSTATPROG, RSTATVERS_TIME, "udp");
- if (rstat_clnt == NULL) {
- warnx("%s %s", host, clnt_spcreateerror(""));
- return(-1);
- }
- bzero((char *)&host_stat, sizeof(host_stat));
- tv.tv_sec = 15; /* XXX ??? */
- tv.tv_usec = 0;
- if (clnt_call(rstat_clnt, RSTATPROC_STATS,
- (xdrproc_t)xdr_void, NULL,
- (xdrproc_t)xdr_statstime, &host_stat, tv) != RPC_SUCCESS) {
- warnx("%s: %s", host, clnt_sperror(rstat_clnt, host));
- clnt_destroy(rstat_clnt);
- return(-1);
- }
- addr.sin_addr.s_addr = *(int *)hp->h_addr;
- rstat_reply((caddr_t)&host_stat, &addr);
- clnt_destroy(rstat_clnt);
- return (0);
- }
- static void
- allhosts(void)
- {
- statstime host_stat;
- enum clnt_stat clnt_stat;
- clnt_stat = clnt_broadcast(RSTATPROG, RSTATVERS_TIME, RSTATPROC_STATS,
- (xdrproc_t)xdr_void, NULL,
- (xdrproc_t)xdr_statstime, &host_stat,
- (resultproc_t)rstat_reply);
- if (clnt_stat != RPC_SUCCESS && clnt_stat != RPC_TIMEDOUT)
- errx(1, "%s", clnt_sperrno(clnt_stat));
- }
- static void
- usage(void)
- {
- fprintf(stderr, "usage: rup [host ...]\n");
- exit(1);
- }
- int
- main(int argc, char *argv[])
- {
- int ch;
- while ((ch = getopt(argc, argv, "?")) != -1)
- switch (ch) {
- default:
- usage();
- /*NOTREACHED*/
- }
- setlinebuf(stdout);
- if (argc == optind)
- allhosts();
- else {
- for (; optind < argc; optind++)
- (void) onehost(argv[optind]);
- }
- exit(0);
- }