252 lines
6.3 KiB
C
252 lines
6.3 KiB
C
/*-
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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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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <rpc/rpc.h>
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#include <rpc/pmap_clnt.h>
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#include <rpcsvc/rnusers.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 <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <timeconv.h>
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#include <unistd.h>
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#define MAX_INT 0x7fffffff
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#define HOST_WIDTH 20
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#define LINE_WIDTH 15
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int longopt;
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int allopt;
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struct host_list {
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struct host_list *next;
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struct in_addr addr;
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} *hosts;
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static int
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search_host(struct in_addr addr)
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{
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struct host_list *hp;
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if (hosts == NULL)
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return (0);
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for (hp = hosts; hp != NULL; hp = hp->next) {
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if (hp->addr.s_addr == addr.s_addr)
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return (1);
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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 in_addr addr)
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{
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struct host_list *hp;
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if ((hp = (struct host_list *)malloc(sizeof(struct host_list))) == NULL)
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errx(1, "no memory");
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hp->addr.s_addr = addr.s_addr;
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hp->next = hosts;
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hosts = hp;
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}
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static int
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rusers_reply(caddr_t replyp, struct sockaddr_in *raddrp)
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{
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u_int x;
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int idle;
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char date[32], idle_time[64], remote[64];
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struct hostent *hp;
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utmpidlearr *up, u;
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char *host;
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int days, hours, minutes, seconds;
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up = &u;
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memcpy(up, replyp, sizeof(*up));
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if (search_host(raddrp->sin_addr))
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return (0);
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if (!allopt && up->utmpidlearr_len == 0)
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return (0);
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hp = gethostbyaddr((char *)&raddrp->sin_addr.s_addr,
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sizeof(struct in_addr), AF_INET);
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if (hp != NULL)
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host = hp->h_name;
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else
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host = inet_ntoa(raddrp->sin_addr);
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if (!longopt)
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printf("%-*s ", HOST_WIDTH, host);
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for (x = 0; x < up->utmpidlearr_len; x++) {
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time_t t = _int_to_time(up->utmpidlearr_val[x].ui_utmp.ut_time);
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strncpy(date, &(ctime(&t)[4]), sizeof(date) - 1);
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idle = up->utmpidlearr_val[x].ui_idle;
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sprintf(idle_time, " :%02d", idle);
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if (idle == MAX_INT)
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strcpy(idle_time, "??");
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else if (idle == 0)
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strcpy(idle_time, "");
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else {
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seconds = idle;
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days = seconds / (60 * 60 * 24);
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seconds %= (60 * 60 * 24);
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hours = seconds / (60 * 60);
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seconds %= (60 * 60);
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minutes = seconds / 60;
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seconds %= 60;
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if (idle > 60)
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sprintf(idle_time, "%d:%02d", minutes, seconds);
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if (idle >= (60 * 60))
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sprintf(idle_time, "%d:%02d:%02d",
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hours, minutes, seconds);
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if (idle >= (24 * 60 * 60))
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sprintf(idle_time, "%d days, %d:%02d:%02d",
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days, hours, minutes, seconds);
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}
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strncpy(remote, up->utmpidlearr_val[x].ui_utmp.ut_host,
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sizeof(remote) - 1);
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if (strlen(remote) != 0)
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sprintf(remote, "(%.16s)",
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up->utmpidlearr_val[x].ui_utmp.ut_host);
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if (longopt)
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printf("%-8.8s %*s:%-*.*s %-12.12s %6s %.18s\n",
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up->utmpidlearr_val[x].ui_utmp.ut_name,
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HOST_WIDTH, host, LINE_WIDTH, LINE_WIDTH,
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up->utmpidlearr_val[x].ui_utmp.ut_line, date,
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idle_time, remote );
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else
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printf("%s ",
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up->utmpidlearr_val[x].ui_utmp.ut_name);
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}
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if (!longopt)
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putchar('\n');
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remember_host(raddrp->sin_addr);
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return (0);
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}
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static void
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onehost(char *host)
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{
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utmpidlearr up;
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CLIENT *rusers_clnt;
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struct sockaddr_in addr;
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struct hostent *hp;
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struct timeval tv;
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hp = gethostbyname(host);
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if (hp == NULL)
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errx(1, "unknown host \"%s\"", host);
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rusers_clnt = clnt_create(host, RUSERSPROG, RUSERSVERS_IDLE, "udp");
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if (rusers_clnt == NULL)
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errx(1, "%s", clnt_spcreateerror(""));
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bzero((char *)&up, sizeof(up));
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tv.tv_sec = 15; /* XXX ?? */
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tv.tv_usec = 0;
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if (clnt_call(rusers_clnt, RUSERSPROC_NAMES, (xdrproc_t)xdr_void, NULL,
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(xdrproc_t)xdr_utmpidlearr, &up, tv) != RPC_SUCCESS)
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errx(1, "%s", clnt_sperror(rusers_clnt, ""));
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memcpy(&addr.sin_addr.s_addr, hp->h_addr, sizeof(addr.sin_addr.s_addr));
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rusers_reply((caddr_t)&up, &addr);
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clnt_destroy(rusers_clnt);
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}
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static void
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allhosts(void)
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{
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utmpidlearr up;
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enum clnt_stat clnt_stat;
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bzero((char *)&up, sizeof(up));
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clnt_stat = clnt_broadcast(RUSERSPROG, RUSERSVERS_IDLE,
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RUSERSPROC_NAMES, (xdrproc_t)xdr_void, NULL,
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(xdrproc_t)xdr_utmpidlearr, (char *)&up,
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(resultproc_t)rusers_reply);
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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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}
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static void
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usage(void)
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{
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fprintf(stderr, "usage: rusers [-al] [host ...]\n");
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exit(1);
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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;
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while ((ch = getopt(argc, argv, "al")) != -1)
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switch (ch) {
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case 'a':
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allopt++;
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break;
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case 'l':
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longopt++;
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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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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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(void)onehost(argv[optind]);
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}
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exit(0);
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}
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