387 lines
9.2 KiB
C
387 lines
9.2 KiB
C
/* $NetBSD: rup.c,v 1.29 2016/09/05 00:40:29 sevan Exp $ */
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/*-
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* Copyright (c) 1993, John Brezak
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__RCSID("$NetBSD: rup.c,v 1.29 2016/09/05 00:40:29 sevan Exp $");
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <err.h>
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#include <netdb.h>
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#include <rpc/rpc.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#undef FSHIFT /* Use protocol's shift and scale values */
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#undef FSCALE
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#include <rpcsvc/rstat.h>
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#define HOST_WIDTH 24
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static int printtime; /* print the remote host(s)'s time */
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static struct host_list {
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struct host_list *next;
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int family;
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union {
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struct in6_addr _addr6;
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struct in_addr _addr4;
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} addr;
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} *hosts;
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#define addr6 addr._addr6
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#define addr4 addr._addr4
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static int search_host(struct sockaddr *);
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static void remember_host(struct sockaddr *);
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static int
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search_host(struct sockaddr *sa)
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{
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struct host_list *hp;
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if (!hosts)
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return 0;
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for (hp = hosts; hp != NULL; hp = hp->next) {
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switch (hp->family) {
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case AF_INET6:
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if (!memcmp(&hp->addr6,
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&((struct sockaddr_in6 *)(void *)sa)->sin6_addr,
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sizeof (struct in6_addr)))
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return 1;
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break;
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case AF_INET:
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if (!memcmp(&hp->addr4,
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&((struct sockaddr_in *)(void *)sa)->sin_addr,
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sizeof (struct in_addr)))
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return 1;
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break;
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default:
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break;
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}
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}
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return 0;
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}
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static void
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remember_host(struct sockaddr *sa)
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{
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struct host_list *hp;
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if ((hp = malloc(sizeof(struct host_list))) == NULL) {
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err(1, "malloc");
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/* NOTREACHED */
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}
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hp->family = sa->sa_family;
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hp->next = hosts;
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switch (sa->sa_family) {
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case AF_INET6:
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(void)memcpy(&hp->addr6,
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&((struct sockaddr_in6 *)(void *)sa)->sin6_addr,
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sizeof (struct in6_addr));
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break;
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case AF_INET:
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(void)memcpy(&hp->addr4,
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&((struct sockaddr_in *)(void *)sa)->sin_addr,
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sizeof (struct in_addr));
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break;
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default:
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errx(1, "unknown address family");
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/* NOTREACHED */
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}
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hosts = hp;
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}
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struct rup_data {
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const char *host;
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struct statstime statstime;
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};
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static struct rup_data *rup_data;
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static size_t rup_data_idx = 0;
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static size_t rup_data_max = 0;
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enum sort_type {
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SORT_NONE,
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SORT_HOST,
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SORT_LDAV,
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SORT_UPTIME
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};
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static enum sort_type sort_type;
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static int compare(struct rup_data *, struct rup_data *);
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static void remember_rup_data(const char *, struct statstime *);
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static int rstat_reply(char *, struct netbuf *, struct netconfig *);
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static void print_rup_data(const char *, statstime *);
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static int onehost(char *);
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static void allhosts(void);
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static void usage(void) __dead;
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int
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compare(struct rup_data *d1, struct rup_data *d2)
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{
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switch(sort_type) {
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case SORT_HOST:
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return strcmp(d1->host, d2->host);
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case SORT_LDAV:
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return d1->statstime.avenrun[0]
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- d2->statstime.avenrun[0];
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case SORT_UPTIME:
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return d1->statstime.boottime.tv_sec
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- d2->statstime.boottime.tv_sec;
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default:
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/* something's really wrong here */
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abort();
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/*NOTREACHED*/
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}
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}
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static void
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remember_rup_data(const char *host, struct statstime *st)
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{
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struct rup_data *n;
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if (rup_data_idx >= rup_data_max) {
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n = realloc(rup_data,
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(rup_data_max + 16) * sizeof(struct rup_data));
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if (n == NULL) {
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err (1, "realloc");
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/* NOTREACHED */
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}
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rup_data = n;
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rup_data_max += 16;
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}
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rup_data[rup_data_idx].host = strdup(host);
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rup_data[rup_data_idx].statstime = *st;
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rup_data_idx++;
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}
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static int
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/*ARGSUSED*/
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rstat_reply(char *replyp, struct netbuf *raddrp, struct netconfig *nconf)
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{
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char host[NI_MAXHOST];
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statstime *host_stat = (statstime *)(void *)replyp;
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struct sockaddr *sa = raddrp->buf;
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if (!search_host(sa)) {
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if (getnameinfo(sa, (socklen_t)sa->sa_len, host, sizeof host,
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NULL, 0, 0))
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return 0;
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remember_host(sa);
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if (sort_type != SORT_NONE) {
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remember_rup_data(host, host_stat);
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} else {
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print_rup_data(host, host_stat);
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}
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}
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return 0;
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}
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static void
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print_rup_data(const char *host, statstime *host_stat)
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{
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struct tm *tmp_time;
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struct tm host_time;
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unsigned ups = 0, upm = 0, uph = 0, upd = 0;
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time_t now;
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char days_buf[16];
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char hours_buf[16];
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if (printtime)
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(void)printf("%-*.*s", HOST_WIDTH-4, HOST_WIDTH-4, host);
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else
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(void)printf("%-*.*s", HOST_WIDTH, HOST_WIDTH, host);
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now = host_stat->curtime.tv_sec;
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tmp_time = localtime(&now);
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host_time = *tmp_time;
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host_stat->curtime.tv_sec -= host_stat->boottime.tv_sec;
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ups=host_stat->curtime.tv_sec;
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upd=ups / (3600 * 24);
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ups-=upd * 3600 * 24;
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uph=ups / 3600;
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ups-=uph * 3600;
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upm=ups / 60;
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if (upd != 0)
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(void)snprintf(days_buf, sizeof(days_buf), "%3u day%s, ", upd,
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(upd > 1) ? "s" : "");
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else
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days_buf[0] = '\0';
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if (uph != 0)
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(void)snprintf(hours_buf, sizeof(hours_buf), "%2u:%02u, ",
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uph, upm);
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else
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if (upm != 0)
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(void)snprintf(hours_buf, sizeof(hours_buf),
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"%2u min%s ", upm, (upm == 1) ? ", " : "s,");
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else if (ups < 60)
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(void)snprintf(hours_buf, sizeof(hours_buf),
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"%2u secs ", ups);
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else
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hours_buf[0] = '\0';
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if (printtime)
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(void)printf(" %2d:%02d%cm",
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(host_time.tm_hour % 12) ? (host_time.tm_hour % 12) : 12,
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host_time.tm_min, (host_time.tm_hour >= 12) ? 'p' : 'a');
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(void)printf(" up %9.9s%9.9s load average: %.2f %.2f %.2f\n",
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days_buf, hours_buf, (double)host_stat->avenrun[0]/FSCALE,
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(double)host_stat->avenrun[1]/FSCALE,
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(double)host_stat->avenrun[2]/FSCALE);
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}
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static int
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onehost(char *host)
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{
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CLIENT *rstat_clnt;
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statstime host_stat;
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static struct timeval timeout = {25, 0};
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rstat_clnt = clnt_create(host, RSTATPROG, RSTATVERS_TIME, "udp");
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if (rstat_clnt == NULL) {
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warnx("%s", clnt_spcreateerror(host));
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return 1;
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}
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(void)memset(&host_stat, 0, sizeof(host_stat));
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if (clnt_call(rstat_clnt, RSTATPROC_STATS, xdr_void, NULL,
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xdr_statstime, &host_stat, timeout) != RPC_SUCCESS) {
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warnx("%s", clnt_sperror(rstat_clnt, host));
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clnt_destroy(rstat_clnt);
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return 1;
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}
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print_rup_data(host, &host_stat);
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clnt_destroy(rstat_clnt);
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return 0;
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}
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static void
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allhosts(void)
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{
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statstime host_stat;
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enum clnt_stat clnt_stat;
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size_t i;
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if (sort_type != SORT_NONE) {
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(void)printf("collecting responses...");
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(void)fflush(stdout);
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}
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clnt_stat = rpc_broadcast(RSTATPROG, RSTATVERS_TIME, RSTATPROC_STATS,
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(xdrproc_t)xdr_void, NULL, (xdrproc_t)xdr_statstime, (caddr_t)(void *)&host_stat,
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(resultproc_t)rstat_reply, "udp");
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if (clnt_stat != RPC_SUCCESS && clnt_stat != RPC_TIMEDOUT)
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errx(1, "%s", clnt_sperrno(clnt_stat));
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if (sort_type != SORT_NONE) {
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(void)putchar('\n');
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qsort(rup_data, rup_data_idx, sizeof(struct rup_data),
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(int (*)(const void*, const void*))compare);
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for (i = 0; i < rup_data_idx; i++) {
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print_rup_data(rup_data[i].host, &rup_data[i].statstime);
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}
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}
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}
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int
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main(int argc, char *argv[])
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{
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int ch, retval;
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setprogname(*argv);
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sort_type = SORT_NONE;
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retval = 0;
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while ((ch = getopt(argc, argv, "dhlt")) != -1)
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switch (ch) {
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case 'd':
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printtime = 1;
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break;
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case 'h':
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sort_type = SORT_HOST;
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break;
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case 'l':
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sort_type = SORT_LDAV;
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break;
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case 't':
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sort_type = SORT_UPTIME;
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break;
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default:
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usage();
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/*NOTREACHED*/
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}
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(void)setlinebuf(stdout);
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if (argc == optind)
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allhosts();
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else {
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for (; optind < argc; optind++)
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retval += onehost(argv[optind]);
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}
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return retval ? EXIT_FAILURE : EXIT_SUCCESS;
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}
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void
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usage(void)
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{
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(void)fprintf(stderr, "Usage: %s [-dhlt] [hosts ...]\n",
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getprogname());
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exit(EXIT_SUCCESS);
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}
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