/*- * 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. */ #ifndef lint static char rcsid[] = "$Id: rusers.c,v 1.1.1.1 1994/08/28 15:06:02 csgr Exp $"; #endif /* not lint */ #include #include #include #include #include #include #include #include #include #define MAX_INT 0x7fffffff #define HOST_WIDTH 20 #define LINE_WIDTH 15 char *argv0; int longopt; int allopt; struct host_list { struct host_list *next; struct in_addr addr; } *hosts; 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); } void remember_host(struct in_addr addr) { struct host_list *hp; if (!(hp = (struct host_list *)malloc(sizeof(struct host_list)))) { fprintf(stderr, "%s: no memory.\n", argv0); exit(1); } hp->addr.s_addr = addr.s_addr; hp->next = hosts; hosts = hp; } rusers_reply(char *replyp, struct sockaddr_in *raddrp) { int x, idle; char date[32], idle_time[64], remote[64]; struct hostent *hp; utmpidlearr *up = (utmpidlearr *)replyp; char *host; int days, hours, minutes, seconds; if (search_host(raddrp->sin_addr)) return(0); if (!allopt && !up->utmpidlearr_len) 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); if (!longopt) printf("%-*s ", HOST_WIDTH, host); for (x = 0; x < up->utmpidlearr_len; x++) { strncpy(date, &(ctime((time_t *)&(up->utmpidlearr_val[x].ui_utmp.ut_time))[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); } onehost(char *host) { utmpidlearr up; CLIENT *rusers_clnt; struct sockaddr_in addr; struct hostent *hp; hp = gethostbyname(host); if (hp == NULL) { fprintf(stderr, "%s: unknown host \"%s\"\n", argv0, host); exit(1); } rusers_clnt = clnt_create(host, RUSERSPROG, RUSERSVERS_IDLE, "udp"); if (rusers_clnt == NULL) { clnt_pcreateerror(argv0); exit(1); } bzero((char *)&up, sizeof(up)); if (clnt_call(rusers_clnt, RUSERSPROC_NAMES, xdr_void, NULL, xdr_utmpidlearr, &up, NULL) != RPC_SUCCESS) { clnt_perror(rusers_clnt, argv0); exit(1); } addr.sin_addr.s_addr = *(int *)hp->h_addr; rusers_reply((char *)&up, &addr); } allhosts() { utmpidlearr up; enum clnt_stat clnt_stat; bzero((char *)&up, sizeof(up)); clnt_stat = clnt_broadcast(RUSERSPROG, RUSERSVERS_IDLE, RUSERSPROC_NAMES, xdr_void, NULL, xdr_utmpidlearr, &up, rusers_reply); if (clnt_stat != RPC_SUCCESS && clnt_stat != RPC_TIMEDOUT) { fprintf(stderr, "%s: %s\n", argv0, clnt_sperrno(clnt_stat)); exit(1); } } usage() { fprintf(stderr, "Usage: %s [-la] [hosts ...]\n", argv0); exit(1); } main(int argc, char *argv[]) { int ch; extern int optind; if (!(argv0 = rindex(argv[0], '/'))) argv0 = argv[0]; else argv0++; 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); }