File: [local] / src / usr.bin / rup / rup.c (download)
Revision 1.31, Mon Mar 20 16:10:10 2017 UTC (7 years, 2 months ago) by deraadt
Branch: MAIN
CVS Tags: OPENBSD_7_5_BASE, OPENBSD_7_5, OPENBSD_7_4_BASE, OPENBSD_7_4, OPENBSD_7_3_BASE, OPENBSD_7_3, OPENBSD_7_2_BASE, OPENBSD_7_2, OPENBSD_7_1_BASE, OPENBSD_7_1, OPENBSD_7_0_BASE, OPENBSD_7_0, OPENBSD_6_9_BASE, OPENBSD_6_9, OPENBSD_6_8_BASE, OPENBSD_6_8, OPENBSD_6_7_BASE, OPENBSD_6_7, OPENBSD_6_6_BASE, OPENBSD_6_6, OPENBSD_6_5_BASE, OPENBSD_6_5, OPENBSD_6_4_BASE, OPENBSD_6_4, OPENBSD_6_3_BASE, OPENBSD_6_3, OPENBSD_6_2_BASE, OPENBSD_6_2, OPENBSD_6_1_BASE, OPENBSD_6_1, HEAD Changes since 1.30: +2 -2 lines
recallocarray array that has remote data
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/* $OpenBSD: rup.c,v 1.31 2017/03/20 16:10:10 deraadt Exp $ */
/*-
* 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. The name of the author may not 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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <sys/socket.h>
#include <netdb.h>
#include <rpc/rpc.h>
#include <rpc/pmap_clnt.h>
#include <arpa/inet.h>
#include <err.h>
#include <unistd.h>
#undef FSHIFT /* Use protocol's shift and scale values */
#undef FSCALE
#include <rpcsvc/rstat.h>
#define HOST_WIDTH 27
int printtime; /* print the remote host(s)'s time */
struct host_list {
struct host_list *next;
struct in_addr addr;
} *hosts;
void usage(void);
int print_rup_data(char *, statstime *host_stat);
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 = malloc(sizeof(struct host_list)))) {
err(1, NULL);
/* NOTREACHED */
}
hp->addr.s_addr = addr.s_addr;
hp->next = hosts;
hosts = hp;
}
struct rup_data {
char *host;
struct statstime statstime;
};
struct rup_data *rup_data;
int rup_data_idx = 0;
int rup_data_max = 0;
enum sort_type {
SORT_NONE,
SORT_HOST,
SORT_LDAV,
SORT_UPTIME
};
enum sort_type sort_type;
static int
compare(const void *v1, const void *v2)
{
const struct rup_data *d1 = v1;
const struct rup_data *d2 = v2;
switch(sort_type) {
case SORT_HOST:
return strcmp(d1->host, d2->host);
case SORT_LDAV:
return d1->statstime.avenrun[0]
- d2->statstime.avenrun[0];
case SORT_UPTIME:
return d1->statstime.boottime.tv_sec
- d2->statstime.boottime.tv_sec;
default:
/* something's really wrong here */
abort();
}
}
static void
remember_rup_data(char *host, struct statstime *st)
{
if (rup_data_idx >= rup_data_max) {
int newsize;
struct rup_data *newrup;
newsize = rup_data_max + 16;
newrup = recallocarray(rup_data, rup_data_max, newsize,
sizeof(struct rup_data));
if (newrup == NULL) {
err(1, NULL);
/* NOTREACHED */
}
rup_data = newrup;
rup_data_max = newsize;
}
if ((rup_data[rup_data_idx].host = strdup(host)) == NULL)
err(1, NULL);
rup_data[rup_data_idx].statstime = *st;
rup_data_idx++;
}
static int
rstat_reply(char *replyp, struct sockaddr_in *raddrp)
{
struct hostent *hp;
char *host;
statstime *host_stat = (statstime *)replyp;
if (!search_host(raddrp->sin_addr)) {
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);
remember_host(raddrp->sin_addr);
if (sort_type != SORT_NONE)
remember_rup_data(host, host_stat);
else
print_rup_data(host, host_stat);
}
return (0);
}
int
print_rup_data(char *host, statstime *host_stat)
{
unsigned int ups = 0, upm = 0, uph = 0, upd = 0;
struct tm *tmp_time, host_time;
char days_buf[16], hours_buf[16];
time_t tim;
if (printtime)
printf("%-*.*s", HOST_WIDTH-8, HOST_WIDTH-8, host);
else
printf("%-*.*s", HOST_WIDTH, HOST_WIDTH, host);
tim = host_stat->curtime.tv_sec;
tmp_time = localtime(&tim);
host_time = *tmp_time;
host_stat->curtime.tv_sec -= host_stat->boottime.tv_sec;
if (host_stat->curtime.tv_sec > 0)
ups = host_stat->curtime.tv_sec;
upd = ups / (3600 * 24);
ups -= upd * 3600 * 24;
uph = ups / 3600;
ups -= uph * 3600;
upm = ups / 60;
if (upd != 0)
snprintf(days_buf, sizeof days_buf, "%3u day%s, ", upd,
(upd > 1) ? "s" : "");
else
days_buf[0] = '\0';
if (uph != 0)
snprintf(hours_buf, sizeof hours_buf, "%2u:%02u, ",
uph, upm);
else
if (upm != 0)
snprintf(hours_buf, sizeof hours_buf, "%2u min%s ",
upm, (upm == 1) ? ", " : "s,");
else
hours_buf[0] = '\0';
if (printtime)
printf(" %2d:%02d%cm",
(host_time.tm_hour % 12) ? (host_time.tm_hour % 12) : 12,
host_time.tm_min,
(host_time.tm_hour >= 12) ? 'p' : 'a');
printf(" up %9.9s%9.9s load average: %.2f %.2f %.2f\n",
days_buf, hours_buf,
(double)host_stat->avenrun[0] / FSCALE,
(double)host_stat->avenrun[1] / FSCALE,
(double)host_stat->avenrun[2] / FSCALE);
return(0);
}
static void
onehost(char *host)
{
CLIENT *rstat_clnt;
statstime host_stat;
static struct timeval timeout = {25, 0};
extern char *__progname;
rstat_clnt = clnt_create(host, RSTATPROG, RSTATVERS_TIME, "udp");
if (rstat_clnt == NULL) {
fprintf(stderr, "%s: %s", __progname,
clnt_spcreateerror(host));
return;
}
bzero((char *)&host_stat, sizeof(host_stat));
if (clnt_call(rstat_clnt, RSTATPROC_STATS, xdr_void, NULL,
xdr_statstime, &host_stat, timeout) != RPC_SUCCESS) {
fprintf(stderr, "%s: %s", __progname,
clnt_sperror(rstat_clnt, host));
clnt_destroy(rstat_clnt);
return;
}
if (sort_type != SORT_NONE)
remember_rup_data(host, &host_stat);
else
print_rup_data(host, &host_stat);
clnt_destroy(rstat_clnt);
}
static void
allhosts(void)
{
statstime host_stat;
enum clnt_stat clnt_stat;
extern char *__progname;
if (sort_type != SORT_NONE) {
printf("collecting responses...\n");
fflush(stdout);
}
clnt_stat = clnt_broadcast(RSTATPROG, RSTATVERS_TIME, RSTATPROC_STATS,
xdr_void, NULL, xdr_statstime, (char *)&host_stat, rstat_reply);
if (clnt_stat != RPC_SUCCESS && clnt_stat != RPC_TIMEDOUT) {
fprintf(stderr, "%s: %s\n", __progname, clnt_sperrno(clnt_stat));
exit(1);
}
}
int
main(int argc, char *argv[])
{
int ch;
size_t i;
extern int optind;
sort_type = SORT_NONE;
while ((ch = getopt(argc, argv, "dhlt")) != -1)
switch (ch) {
case 'd':
printtime = 1;
break;
case 'h':
sort_type = SORT_HOST;
break;
case 'l':
sort_type = SORT_LDAV;
break;
case 't':
sort_type = SORT_UPTIME;
break;
default:
usage();
/*NOTREACHED*/
}
setvbuf(stdout, NULL, _IOLBF, 0);
if (argc == optind)
allhosts();
else {
for (; optind < argc; optind++)
onehost(argv[optind]);
}
if (sort_type != SORT_NONE) {
qsort(rup_data, rup_data_idx, sizeof(struct rup_data),
compare);
for (i = 0; i < rup_data_idx; i++) {
print_rup_data(rup_data[i].host,
&rup_data[i].statstime);
}
}
exit(0);
}
void
usage(void)
{
fprintf(stderr, "usage: rup [-dhlt] [host ...]\n");
exit(1);
}