dhcpcd: update README.DRAGONFLY
[dragonfly.git] / libexec / rpc.rusersd / rusers_proc.c
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1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1993, John Brezak
5 * All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
31 * $FreeBSD: head/libexec/rpc.rusersd/rusers_proc.c 326025 2017-11-20 19:49:47Z pfg $
34 #ifdef DEBUG
35 #include <errno.h>
36 #endif
37 #include <stdio.h>
38 #include <stdlib.h>
39 #include <string.h>
40 #include <sys/param.h>
41 #include <sys/stat.h>
42 #include <syslog.h>
43 #include <utmpx.h>
44 #ifdef XIDLE
45 #include <setjmp.h>
46 #include <X11/Xlib.h>
47 #include <X11/extensions/xidle.h>
48 #endif
49 #include <rpcsvc/rnusers.h>
51 #include "extern.h"
53 #ifndef _PATH_DEV
54 #define _PATH_DEV "/dev"
55 #endif
57 static utmpidle utmp_idle[MAXUSERS];
58 static utmp old_utmp[MAXUSERS];
59 static struct utmpx utmp_list[MAXUSERS];
61 #ifdef XIDLE
62 static Display *dpy;
64 static jmp_buf openAbort;
66 static void
67 abortOpen(void)
69 longjmp (openAbort, 1);
72 XqueryIdle(char *display)
74 int first_event, first_error;
75 Time IdleTime;
77 (void) signal (SIGALRM, abortOpen);
78 (void) alarm ((unsigned) 10);
79 if (!setjmp (openAbort)) {
80 if (!(dpy= XOpenDisplay(display))) {
81 syslog(LOG_ERR, "Cannot open display %s", display);
82 return(-1);
84 if (XidleQueryExtension(dpy, &first_event, &first_error)) {
85 if (!XGetIdleTime(dpy, &IdleTime)) {
86 syslog(LOG_ERR, "%s: unable to get idle time", display);
87 return(-1);
89 } else {
90 syslog(LOG_ERR, "%s: Xidle extension not loaded", display);
91 return(-1);
93 XCloseDisplay(dpy);
94 } else {
95 syslog(LOG_ERR, "%s: server grabbed for over 10 seconds", display);
96 return(-1);
98 (void) signal (SIGALRM, SIG_DFL);
99 (void) alarm ((unsigned) 0);
101 IdleTime /= 1000;
102 return((IdleTime + 30) / 60);
104 #endif
106 static u_int
107 getidle(const char *tty, const char *display __unused)
109 struct stat st;
110 char ttyname[PATH_MAX];
111 time_t now;
112 u_long idle;
115 * If this is an X terminal or console, then try the
116 * XIdle extension
118 #ifdef XIDLE
119 if (display && *display && (idle = XqueryIdle(display)) >= 0)
120 return(idle);
121 #endif
122 idle = 0;
123 if (*tty == 'X') {
124 u_long kbd_idle, mouse_idle;
125 #if !defined(__DragonFly__) && !defined(__FreeBSD__)
126 kbd_idle = getidle("kbd", NULL);
127 #else
128 kbd_idle = getidle("vga", NULL);
129 #endif
130 mouse_idle = getidle("mouse", NULL);
131 idle = (kbd_idle < mouse_idle)?kbd_idle:mouse_idle;
132 } else {
133 sprintf(ttyname, "%s/%s", _PATH_DEV, tty);
134 if (stat(ttyname, &st) < 0) {
135 #ifdef DEBUG
136 printf("%s: %s\n", ttyname, strerror(errno));
137 #endif
138 return(-1);
140 time(&now);
141 #ifdef DEBUG
142 printf("%s: now=%d atime=%d\n", ttyname, now,
143 st.st_atime);
144 #endif
145 idle = now - st.st_atime;
146 idle = (idle + 30) / 60; /* secs->mins */
149 return(idle);
152 static utmpidlearr *
153 do_names_2(void)
155 static utmpidlearr ut;
156 struct utmpx *usr;
157 int nusers = 0;
159 memset(&ut, 0, sizeof(ut));
160 ut.utmpidlearr_val = &utmp_idle[0];
162 setutxent();
163 while ((usr = getutxent()) != NULL && nusers < MAXUSERS) {
164 if (usr->ut_type != USER_PROCESS)
165 continue;
167 memcpy(&utmp_list[nusers], usr, sizeof(*usr));
168 utmp_idle[nusers].ui_utmp.ut_time = usr->ut_tv.tv_sec;
169 utmp_idle[nusers].ui_idle =
170 getidle(usr->ut_line, usr->ut_host);
171 utmp_idle[nusers].ui_utmp.ut_line =
172 utmp_list[nusers].ut_line;
173 utmp_idle[nusers].ui_utmp.ut_name =
174 utmp_list[nusers].ut_user;
175 utmp_idle[nusers].ui_utmp.ut_host =
176 utmp_list[nusers].ut_host;
178 nusers++;
180 endutxent();
182 ut.utmpidlearr_len = nusers;
183 return(&ut);
186 static int *
187 rusers_num(void *argp __unused, struct svc_req *rqstp __unused)
189 static int num_users = 0;
190 struct utmpx *usr;
192 setutxent();
193 while ((usr = getutxent()) != NULL) {
194 if (usr->ut_type != USER_PROCESS)
195 continue;
196 num_users++;
198 endutxent();
200 return(&num_users);
203 static utmparr *
204 do_names_1(void)
206 utmpidlearr *utidle;
207 static utmparr ut;
208 unsigned int i;
210 bzero((char *)&ut, sizeof(ut));
212 utidle = do_names_2();
213 if (utidle) {
214 ut.utmparr_len = utidle->utmpidlearr_len;
215 ut.utmparr_val = &old_utmp[0];
216 for (i = 0; i < ut.utmparr_len; i++)
217 bcopy(&utmp_idle[i].ui_utmp, &old_utmp[i],
218 sizeof(old_utmp[0]));
222 return(&ut);
225 utmpidlearr *
226 rusersproc_names_2_svc(void *argp __unused, struct svc_req *rqstp __unused)
228 return (do_names_2());
231 utmpidlearr *
232 rusersproc_allnames_2_svc(void *argp __unused, struct svc_req *rqstp __unused)
234 return (do_names_2());
237 utmparr *
238 rusersproc_names_1_svc(void *argp __unused, struct svc_req *rqstp __unused)
240 return (do_names_1());
243 utmparr *
244 rusersproc_allnames_1_svc(void *argp __unused, struct svc_req *rqstp __unused)
246 return (do_names_1());
249 typedef void *(*rusersproc_t)(void *, struct svc_req *);
251 void
252 rusers_service(struct svc_req *rqstp, SVCXPRT *transp)
254 union {
255 int fill;
256 } argument;
257 char *result;
258 xdrproc_t xdr_argument, xdr_result;
259 rusersproc_t local;
261 switch (rqstp->rq_proc) {
262 case NULLPROC:
263 (void)svc_sendreply(transp, (xdrproc_t)xdr_void, NULL);
264 goto leave;
266 case RUSERSPROC_NUM:
267 xdr_argument = (xdrproc_t)xdr_void;
268 xdr_result = (xdrproc_t)xdr_int;
269 local = (rusersproc_t)rusers_num;
270 break;
272 case RUSERSPROC_NAMES:
273 xdr_argument = (xdrproc_t)xdr_void;
274 xdr_result = (xdrproc_t)xdr_utmpidlearr;
275 switch (rqstp->rq_vers) {
276 case RUSERSVERS_ORIG:
277 local = (rusersproc_t)rusersproc_names_1_svc;
278 break;
279 case RUSERSVERS_IDLE:
280 local = (rusersproc_t)rusersproc_names_2_svc;
281 break;
282 default:
283 svcerr_progvers(transp, RUSERSVERS_ORIG, RUSERSVERS_IDLE);
284 goto leave;
285 /*NOTREACHED*/
287 break;
289 case RUSERSPROC_ALLNAMES:
290 xdr_argument = (xdrproc_t)xdr_void;
291 xdr_result = (xdrproc_t)xdr_utmpidlearr;
292 switch (rqstp->rq_vers) {
293 case RUSERSVERS_ORIG:
294 local = (rusersproc_t)rusersproc_allnames_1_svc;
295 break;
296 case RUSERSVERS_IDLE:
297 local = (rusersproc_t)rusersproc_allnames_2_svc;
298 break;
299 default:
300 svcerr_progvers(transp, RUSERSVERS_ORIG, RUSERSVERS_IDLE);
301 goto leave;
302 /*NOTREACHED*/
304 break;
306 default:
307 svcerr_noproc(transp);
308 goto leave;
310 bzero(&argument, sizeof(argument));
311 if (!svc_getargs(transp, (xdrproc_t)xdr_argument, &argument)) {
312 svcerr_decode(transp);
313 goto leave;
315 result = (*local)(&argument, rqstp);
316 if (result != NULL &&
317 !svc_sendreply(transp, (xdrproc_t)xdr_result, result)) {
318 svcerr_systemerr(transp);
320 if (!svc_freeargs(transp, (xdrproc_t)xdr_argument, &argument)) {
321 syslog(LOG_ERR, "unable to free arguments");
322 exit(1);
324 leave:
325 if (from_inetd)
326 exit(0);