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