/* $NetBSD: rusers_proc.c,v 1.14 1997/09/17 16:35:55 christos 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 AUTHOR `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 AUTHOR 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 #ifndef lint __RCSID("$NetBSD: rusers_proc.c,v 1.14 1997/09/17 16:35:55 christos Exp $"); #endif /* not lint */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include "rusers_proc.h" #ifdef XIDLE #include #include #include #endif #include /* New version */ #include /* Old version */ #define IGNOREUSER "sleeper" #ifdef OSF #define _PATH_UTMP UTMP_FILE #endif #ifndef _PATH_UTMP #define _PATH_UTMP "/etc/utmp" #endif #ifndef _PATH_DEV #define _PATH_DEV "/dev" #endif #ifndef UT_LINESIZE #define UT_LINESIZE sizeof(((struct utmp *)0)->ut_line) #endif #ifndef UT_NAMESIZE #define UT_NAMESIZE sizeof(((struct utmp *)0)->ut_name) #endif #ifndef UT_HOSTSIZE #define UT_HOSTSIZE sizeof(((struct utmp *)0)->ut_host) #endif typedef char ut_line_t[UT_LINESIZE]; typedef char ut_name_t[UT_NAMESIZE]; typedef char ut_host_t[UT_HOSTSIZE]; static struct rusers_utmp utmps[MAXUSERS]; static struct utmpidle *utmp_idlep[MAXUSERS]; static struct utmpidle utmp_idle[MAXUSERS]; static ut_line_t line[MAXUSERS]; static ut_name_t name[MAXUSERS]; static ut_host_t host[MAXUSERS]; extern int from_inetd; static u_int getidle __P((char *, char *)); static int *rusers_num_svc __P((void *, struct svc_req *)); static utmp_array *do_names_3 __P((int)); static struct utmpidlearr *do_names_2 __P((int)); /* XXX */ struct utmpidlearr *rusersproc_names_2_svc __P((void *, struct svc_req *)); struct utmpidlearr *rusersproc_allnames_2_svc __P((void *, struct svc_req *)); #ifdef XIDLE static FILE *ufp; static Display *dpy; static sigjmp_buf openAbort; static int XqueryIdle __P((char *)); static void abortOpen __P((int)); static void abortOpen(n) int n; { siglongjmp(openAbort, 1); } static int XqueryIdle(display) char *display; { int first_event, first_error; Time IdleTime; (void) signal(SIGALRM, abortOpen); (void) alarm(10); if (!sigsetjmp(openAbort, 0)) { if ((dpy = XOpenDisplay(display)) == NULL) { syslog(LOG_ERR, "cannot open display %s", display); return (-1); } if (XidleQueryExtension(dpy, &first_event, &first_error)) { if (!XGetIdleTime(dpy, &IdleTime)) { syslog(LOG_ERR, "%s: unable to get idle time", display); return (-1); } } else { syslog(LOG_ERR, "%s: Xidle extension not loaded", display); return (-1); } XCloseDisplay(dpy); } else { syslog(LOG_ERR, "%s: server grabbed for over 10 seconds", display); return (-1); } (void) alarm(0); (void) signal(SIGALRM, SIG_DFL); IdleTime /= 1000; return ((IdleTime + 30) / 60); } #endif static u_int getidle(tty, display) char *tty, *display; { struct stat st; char devname[PATH_MAX]; time_t now; u_long idle; /* * If this is an X terminal or console, then try the * XIdle extension */ #ifdef XIDLE if (display && *display && (idle = XqueryIdle(display)) >= 0) return (idle); #endif idle = 0; if (*tty == 'X') { u_long kbd_idle, mouse_idle; #if !defined(i386) kbd_idle = getidle("kbd", NULL); #else /* * XXX Icky i386 console hack. */ kbd_idle = getidle("vga", NULL); #endif mouse_idle = getidle("mouse", NULL); idle = (kbd_idle < mouse_idle) ? kbd_idle : mouse_idle; } else { sprintf(devname, "%s/%s", _PATH_DEV, tty); if (stat(devname, &st) < 0) { #ifdef DEBUG printf("%s: %m\n", devname); #endif return (-1); } time(&now); #ifdef DEBUG printf("%s: now=%d atime=%d\n", devname, now, st.st_atime); #endif idle = now - st.st_atime; idle = (idle + 30) / 60; /* secs->mins */ } if (idle < 0) idle = 0; return (idle); } static int * rusers_num_svc(arg, rqstp) void *arg; struct svc_req *rqstp; { static int num_users = 0; struct utmp usr; ufp = fopen(_PATH_UTMP, "r"); if (!ufp) { syslog(LOG_ERR, "%m"); return (0); } /* only entries with both name and line fields */ while (fread((char *)&usr, sizeof(usr), 1, ufp) == 1) if (*usr.ut_name && *usr.ut_line && strncmp(usr.ut_name, IGNOREUSER, sizeof(usr.ut_name)) #ifdef OSF && usr.ut_type == USER_PROCESS #endif ) { num_users++; } fclose(ufp); return (&num_users); } static utmp_array * do_names_3(int all) { static utmp_array ut; struct utmp usr; int nusers = 0; memset(&ut, 0, sizeof(ut)); ut.utmp_array_val = &utmps[0]; ufp = fopen(_PATH_UTMP, "r"); if (!ufp) { syslog(LOG_ERR, "%m"); return (NULL); } /* only entries with both name and line fields */ while (fread((char *)&usr, sizeof(usr), 1, ufp) == 1 && nusers < MAXUSERS) if (*usr.ut_name && *usr.ut_line && strncmp(usr.ut_name, IGNOREUSER, sizeof(usr.ut_name)) #ifdef OSF && usr.ut_type == USER_PROCESS #endif ) { utmps[nusers].ut_type = RUSERS_USER_PROCESS; utmps[nusers].ut_time = usr.ut_time; utmps[nusers].ut_idle = getidle(usr.ut_line, usr.ut_host); utmps[nusers].ut_line = line[nusers]; strncpy(line[nusers], usr.ut_line, sizeof(line[nusers])); utmps[nusers].ut_user = name[nusers]; strncpy(name[nusers], usr.ut_name, sizeof(name[nusers])); utmps[nusers].ut_host = host[nusers]; strncpy(host[nusers], usr.ut_host, sizeof(host[nusers])); nusers++; } ut.utmp_array_len = nusers; fclose(ufp); return (&ut); } utmp_array * rusersproc_names_3_svc(arg, rqstp) void *arg; struct svc_req *rqstp; { return (do_names_3(0)); } utmp_array * rusersproc_allnames_3_svc(arg, rqstp) void *arg; struct svc_req *rqstp; { return (do_names_3(1)); } static struct utmpidlearr * do_names_2(int all) { static struct utmpidlearr ut; struct utmp usr; int nusers = 0; bzero((char *)&ut, sizeof(ut)); ut.uia_arr = utmp_idlep; ut.uia_cnt = 0; ufp = fopen(_PATH_UTMP, "r"); if (!ufp) { syslog(LOG_ERR, "%m"); return (NULL); } /* only entries with both name and line fields */ while (fread((char *)&usr, sizeof(usr), 1, ufp) == 1 && nusers < MAXUSERS) if (*usr.ut_name && *usr.ut_line && strncmp(usr.ut_name, IGNOREUSER, sizeof(usr.ut_name)) #ifdef OSF && usr.ut_type == USER_PROCESS #endif ) { utmp_idlep[nusers] = &utmp_idle[nusers]; utmp_idle[nusers].ui_utmp.ut_time = usr.ut_time; utmp_idle[nusers].ui_idle = getidle(usr.ut_line, usr.ut_host); strncpy(utmp_idle[nusers].ui_utmp.ut_line, usr.ut_line, sizeof(utmp_idle[nusers].ui_utmp.ut_line)); strncpy(utmp_idle[nusers].ui_utmp.ut_name, usr.ut_name, sizeof(utmp_idle[nusers].ui_utmp.ut_name)); strncpy(utmp_idle[nusers].ui_utmp.ut_host, usr.ut_host, sizeof(utmp_idle[nusers].ui_utmp.ut_host)); nusers++; } ut.uia_cnt = nusers; fclose(ufp); return (&ut); } struct utmpidlearr * rusersproc_names_2_svc(arg, rqstp) void *arg; struct svc_req *rqstp; { return (do_names_2(0)); } struct utmpidlearr * rusersproc_allnames_2_svc(arg, rqstp) void *arg; struct svc_req *rqstp; { return (do_names_2(1)); } void rusers_service(rqstp, transp) struct svc_req *rqstp; SVCXPRT *transp; { union { int fill; } argument; char *result; xdrproc_t xdr_argument, xdr_result; char *(*local) __P((void *, struct svc_req *)); switch (rqstp->rq_proc) { case NULLPROC: (void)svc_sendreply(transp, xdr_void, (char *)NULL); goto leave; case RUSERSPROC_NUM: xdr_argument = (xdrproc_t)xdr_void; xdr_result = (xdrproc_t)xdr_int; switch (rqstp->rq_vers) { case RUSERSVERS_3: case RUSERSVERS_IDLE: local = (char *(*) __P((void *, struct svc_req *))) rusers_num_svc; break; default: svcerr_progvers(transp, RUSERSVERS_IDLE, RUSERSVERS_3); goto leave; /*NOTREACHED*/ } break; case RUSERSPROC_NAMES: xdr_argument = (xdrproc_t)xdr_void; xdr_result = (xdrproc_t)xdr_utmp_array; switch (rqstp->rq_vers) { case RUSERSVERS_3: local = (char *(*) __P((void *, struct svc_req *))) rusersproc_names_3_svc; break; case RUSERSVERS_IDLE: xdr_result = (xdrproc_t)xdr_utmpidlearr; local = (char *(*) __P((void *, struct svc_req *))) rusersproc_names_2_svc; break; default: svcerr_progvers(transp, RUSERSVERS_IDLE, RUSERSVERS_3); goto leave; /*NOTREACHED*/ } break; case RUSERSPROC_ALLNAMES: xdr_argument = (xdrproc_t)xdr_void; xdr_result = (xdrproc_t)xdr_utmp_array; switch (rqstp->rq_vers) { case RUSERSVERS_3: local = (char *(*) __P((void *, struct svc_req *))) rusersproc_allnames_3_svc; break; case RUSERSVERS_IDLE: xdr_result = (xdrproc_t)xdr_utmpidlearr; local = (char *(*) __P((void *, struct svc_req *))) rusersproc_allnames_2_svc; break; default: svcerr_progvers(transp, RUSERSVERS_IDLE, RUSERSVERS_3); goto leave; /*NOTREACHED*/ } break; default: svcerr_noproc(transp); goto leave; } bzero((char *)&argument, sizeof(argument)); if (!svc_getargs(transp, xdr_argument, (caddr_t)&argument)) { svcerr_decode(transp); goto leave; } result = (*local)(&argument, rqstp); if (result != NULL && !svc_sendreply(transp, xdr_result, result)) { svcerr_systemerr(transp); } if (!svc_freeargs(transp, xdr_argument, (caddr_t)&argument)) { (void)fprintf(stderr, "unable to free arguments\n"); exit(1); } leave: if (from_inetd) exit(0); }