rusers_proc.c revision 1.18
1 /* $NetBSD: rusers_proc.c,v 1.18 1998/07/03 11:49:50 mrg Exp $ */ 2 3 /*- 4 * Copyright (c) 1993 John Brezak 5 * All rights reserved. 6 * 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. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR `AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 21 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 22 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 26 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 27 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include <sys/cdefs.h> 32 #ifndef lint 33 __RCSID("$NetBSD: rusers_proc.c,v 1.18 1998/07/03 11:49:50 mrg Exp $"); 34 #endif /* not lint */ 35 36 #include <sys/types.h> 37 #include <sys/time.h> 38 #include <sys/socket.h> 39 #include <sys/param.h> 40 #include <sys/stat.h> 41 42 #include <stdio.h> 43 #include <string.h> 44 #include <stdlib.h> 45 #include <time.h> 46 #include <unistd.h> 47 #include <signal.h> 48 #include <syslog.h> 49 #include <utmp.h> 50 51 #include <rpc/rpc.h> 52 53 #include "rusers_proc.h" 54 55 #ifdef XIDLE 56 #include <setjmp.h> 57 #include <X11/Xlib.h> 58 #include <X11/extensions/xidle.h> 59 #endif 60 #include <rpcsvc/rusers.h> /* New version */ 61 #include <rpcsvc/rnusers.h> /* Old version */ 62 63 #define IGNOREUSER "sleeper" 64 65 #ifdef OSF 66 #define _PATH_UTMP UTMP_FILE 67 #endif 68 69 #ifndef _PATH_UTMP 70 #define _PATH_UTMP "/etc/utmp" 71 #endif 72 73 #ifndef _PATH_DEV 74 #define _PATH_DEV "/dev" 75 #endif 76 77 #ifndef UT_LINESIZE 78 #define UT_LINESIZE sizeof(((struct utmp *)0)->ut_line) 79 #endif 80 #ifndef UT_NAMESIZE 81 #define UT_NAMESIZE sizeof(((struct utmp *)0)->ut_name) 82 #endif 83 #ifndef UT_HOSTSIZE 84 #define UT_HOSTSIZE sizeof(((struct utmp *)0)->ut_host) 85 #endif 86 87 typedef char ut_line_t[UT_LINESIZE]; 88 typedef char ut_name_t[UT_NAMESIZE]; 89 typedef char ut_host_t[UT_HOSTSIZE]; 90 91 static struct rusers_utmp utmps[MAXUSERS]; 92 static struct utmpidle *utmp_idlep[MAXUSERS]; 93 static struct utmpidle utmp_idle[MAXUSERS]; 94 static ut_line_t line[MAXUSERS]; 95 static ut_name_t name[MAXUSERS]; 96 static ut_host_t host[MAXUSERS]; 97 98 extern int from_inetd; 99 100 static u_int getidle __P((char *, char *)); 101 static int *rusers_num_svc __P((void *, struct svc_req *)); 102 static utmp_array *do_names_3 __P((int)); 103 static struct utmpidlearr *do_names_2 __P((int)); 104 105 /* XXX */ 106 struct utmpidlearr *rusersproc_names_2_svc __P((void *, struct svc_req *)); 107 struct utmpidlearr *rusersproc_allnames_2_svc __P((void *, struct svc_req *)); 108 109 110 #ifdef XIDLE 111 static Display *dpy; 112 static sigjmp_buf openAbort; 113 114 static int XqueryIdle __P((char *)); 115 static void abortOpen __P((int)); 116 117 static void 118 abortOpen(n) 119 int n; 120 { 121 siglongjmp(openAbort, 1); 122 } 123 124 static int 125 XqueryIdle(display) 126 char *display; 127 { 128 int first_event, first_error; 129 Time IdleTime; 130 131 (void) signal(SIGALRM, abortOpen); 132 (void) alarm(10); 133 if (!sigsetjmp(openAbort, 0)) { 134 if ((dpy = XOpenDisplay(display)) == NULL) { 135 syslog(LOG_DEBUG, "cannot open display %s", display); 136 return (-1); 137 } 138 if (XidleQueryExtension(dpy, &first_event, &first_error)) { 139 if (!XGetIdleTime(dpy, &IdleTime)) { 140 syslog(LOG_DEBUG, "%s: unable to get idle time", 141 display); 142 return (-1); 143 } 144 } else { 145 syslog(LOG_DEBUG, "%s: Xidle extension not loaded", 146 display); 147 return (-1); 148 } 149 XCloseDisplay(dpy); 150 } else { 151 syslog(LOG_DEBUG, "%s: server grabbed for over 10 seconds", 152 display); 153 return (-1); 154 } 155 (void) alarm(0); 156 (void) signal(SIGALRM, SIG_DFL); 157 158 IdleTime /= 1000; 159 return ((IdleTime + 30) / 60); 160 } 161 #endif /* XIDLE */ 162 163 static u_int 164 getidle(tty, display) 165 char *tty, *display; 166 { 167 struct stat st; 168 char devname[PATH_MAX]; 169 time_t now; 170 u_long idle; 171 172 /* 173 * If this is an X terminal or console, then try the 174 * XIdle extension 175 */ 176 #ifdef XIDLE 177 if (display && *display && strchr(display, ':') != NULL && 178 (idle = XqueryIdle(display)) >= 0) 179 return (idle); 180 #endif 181 idle = 0; 182 if (*tty == 'X') { 183 u_long kbd_idle, mouse_idle; 184 #if !defined(i386) 185 kbd_idle = getidle("kbd", NULL); 186 #else 187 /* 188 * XXX Icky i386 console hack. 189 */ 190 kbd_idle = getidle("vga", NULL); 191 #endif 192 mouse_idle = getidle("mouse", NULL); 193 idle = (kbd_idle < mouse_idle) ? kbd_idle : mouse_idle; 194 } else { 195 snprintf(devname, sizeof devname, "%s/%s", _PATH_DEV, tty); 196 if (stat(devname, &st) < 0) { 197 #ifdef DEBUG 198 printf("%s: %m\n", devname); 199 #endif 200 return (-1); 201 } 202 time(&now); 203 #ifdef DEBUG 204 printf("%s: now=%d atime=%d\n", devname, now, st.st_atime); 205 #endif 206 idle = now - st.st_atime; 207 idle = (idle + 30) / 60; /* secs->mins */ 208 } 209 if (idle < 0) 210 idle = 0; 211 212 return (idle); 213 } 214 215 static int * 216 rusers_num_svc(arg, rqstp) 217 void *arg; 218 struct svc_req *rqstp; 219 { 220 static int num_users = 0; 221 struct utmp usr; 222 FILE *ufp; 223 224 ufp = fopen(_PATH_UTMP, "r"); 225 if (!ufp) { 226 syslog(LOG_ERR, "%m"); 227 return (0); 228 } 229 230 /* only entries with both name and line fields */ 231 while (fread((char *)&usr, sizeof(usr), 1, ufp) == 1) 232 if (*usr.ut_name && *usr.ut_line && 233 strncmp(usr.ut_name, IGNOREUSER, 234 sizeof(usr.ut_name)) 235 #ifdef OSF 236 && usr.ut_type == USER_PROCESS 237 #endif 238 ) { 239 num_users++; 240 } 241 242 fclose(ufp); 243 return (&num_users); 244 } 245 246 static utmp_array * 247 do_names_3(all) 248 int all; 249 { 250 static utmp_array ut; 251 struct utmp usr; 252 int nusers = 0; 253 FILE *ufp; 254 255 memset(&ut, 0, sizeof(ut)); 256 ut.utmp_array_val = &utmps[0]; 257 258 ufp = fopen(_PATH_UTMP, "r"); 259 if (!ufp) { 260 syslog(LOG_ERR, "%m"); 261 return (NULL); 262 } 263 264 /* only entries with both name and line fields */ 265 while (fread((char *)&usr, sizeof(usr), 1, ufp) == 1 && 266 nusers < MAXUSERS) 267 if (*usr.ut_name && *usr.ut_line && 268 strncmp(usr.ut_name, IGNOREUSER, 269 sizeof(usr.ut_name)) 270 #ifdef OSF 271 && usr.ut_type == USER_PROCESS 272 #endif 273 ) { 274 utmps[nusers].ut_type = RUSERS_USER_PROCESS; 275 utmps[nusers].ut_time = 276 usr.ut_time; 277 utmps[nusers].ut_idle = 278 getidle(usr.ut_line, usr.ut_host); 279 utmps[nusers].ut_line = line[nusers]; 280 strncpy(line[nusers], usr.ut_line, 281 sizeof(line[nusers])); 282 utmps[nusers].ut_user = name[nusers]; 283 strncpy(name[nusers], usr.ut_name, 284 sizeof(name[nusers])); 285 utmps[nusers].ut_host = host[nusers]; 286 strncpy(host[nusers], usr.ut_host, 287 sizeof(host[nusers])); 288 nusers++; 289 } 290 ut.utmp_array_len = nusers; 291 292 fclose(ufp); 293 return (&ut); 294 } 295 296 utmp_array * 297 rusersproc_names_3_svc(arg, rqstp) 298 void *arg; 299 struct svc_req *rqstp; 300 { 301 302 return (do_names_3(0)); 303 } 304 305 utmp_array * 306 rusersproc_allnames_3_svc(arg, rqstp) 307 void *arg; 308 struct svc_req *rqstp; 309 { 310 311 return (do_names_3(1)); 312 } 313 314 static struct utmpidlearr * 315 do_names_2(int all) 316 { 317 static struct utmpidlearr ut; 318 struct utmp usr; 319 int nusers = 0; 320 FILE *ufp; 321 322 bzero((char *)&ut, sizeof(ut)); 323 ut.uia_arr = utmp_idlep; 324 ut.uia_cnt = 0; 325 326 ufp = fopen(_PATH_UTMP, "r"); 327 if (!ufp) { 328 syslog(LOG_ERR, "%m"); 329 return (NULL); 330 } 331 332 /* only entries with both name and line fields */ 333 while (fread((char *)&usr, sizeof(usr), 1, ufp) == 1 && 334 nusers < MAXUSERS) 335 if (*usr.ut_name && *usr.ut_line && 336 strncmp(usr.ut_name, IGNOREUSER, 337 sizeof(usr.ut_name)) 338 #ifdef OSF 339 && usr.ut_type == USER_PROCESS 340 #endif 341 ) { 342 utmp_idlep[nusers] = &utmp_idle[nusers]; 343 utmp_idle[nusers].ui_utmp.ut_time = 344 usr.ut_time; 345 utmp_idle[nusers].ui_idle = 346 getidle(usr.ut_line, usr.ut_host); 347 strncpy(utmp_idle[nusers].ui_utmp.ut_line, usr.ut_line, 348 sizeof(utmp_idle[nusers].ui_utmp.ut_line)); 349 strncpy(utmp_idle[nusers].ui_utmp.ut_name, usr.ut_name, 350 sizeof(utmp_idle[nusers].ui_utmp.ut_name)); 351 strncpy(utmp_idle[nusers].ui_utmp.ut_host, usr.ut_host, 352 sizeof(utmp_idle[nusers].ui_utmp.ut_host)); 353 nusers++; 354 } 355 356 ut.uia_cnt = nusers; 357 fclose(ufp); 358 return (&ut); 359 } 360 361 struct utmpidlearr * 362 rusersproc_names_2_svc(arg, rqstp) 363 void *arg; 364 struct svc_req *rqstp; 365 { 366 return (do_names_2(0)); 367 } 368 369 struct utmpidlearr * 370 rusersproc_allnames_2_svc(arg, rqstp) 371 void *arg; 372 struct svc_req *rqstp; 373 { 374 return (do_names_2(1)); 375 } 376 377 void 378 rusers_service(rqstp, transp) 379 struct svc_req *rqstp; 380 SVCXPRT *transp; 381 { 382 union { 383 int fill; 384 } argument; 385 char *result; 386 xdrproc_t xdr_argument, xdr_result; 387 char *(*local) __P((void *, struct svc_req *)); 388 389 switch (rqstp->rq_proc) { 390 case NULLPROC: 391 (void)svc_sendreply(transp, xdr_void, (char *)NULL); 392 goto leave; 393 394 case RUSERSPROC_NUM: 395 xdr_argument = (xdrproc_t)xdr_void; 396 xdr_result = (xdrproc_t)xdr_int; 397 switch (rqstp->rq_vers) { 398 case RUSERSVERS_3: 399 case RUSERSVERS_IDLE: 400 local = (char *(*) __P((void *, struct svc_req *))) 401 rusers_num_svc; 402 break; 403 default: 404 svcerr_progvers(transp, RUSERSVERS_IDLE, RUSERSVERS_3); 405 goto leave; 406 /*NOTREACHED*/ 407 } 408 break; 409 410 case RUSERSPROC_NAMES: 411 xdr_argument = (xdrproc_t)xdr_void; 412 xdr_result = (xdrproc_t)xdr_utmp_array; 413 switch (rqstp->rq_vers) { 414 case RUSERSVERS_3: 415 local = (char *(*) __P((void *, struct svc_req *))) 416 rusersproc_names_3_svc; 417 break; 418 419 case RUSERSVERS_IDLE: 420 xdr_result = (xdrproc_t)xdr_utmpidlearr; 421 local = (char *(*) __P((void *, struct svc_req *))) 422 rusersproc_names_2_svc; 423 break; 424 425 default: 426 svcerr_progvers(transp, RUSERSVERS_IDLE, RUSERSVERS_3); 427 goto leave; 428 /*NOTREACHED*/ 429 } 430 break; 431 432 case RUSERSPROC_ALLNAMES: 433 xdr_argument = (xdrproc_t)xdr_void; 434 xdr_result = (xdrproc_t)xdr_utmp_array; 435 switch (rqstp->rq_vers) { 436 case RUSERSVERS_3: 437 local = (char *(*) __P((void *, struct svc_req *))) 438 rusersproc_allnames_3_svc; 439 break; 440 441 case RUSERSVERS_IDLE: 442 xdr_result = (xdrproc_t)xdr_utmpidlearr; 443 local = (char *(*) __P((void *, struct svc_req *))) 444 rusersproc_allnames_2_svc; 445 break; 446 447 default: 448 svcerr_progvers(transp, RUSERSVERS_IDLE, RUSERSVERS_3); 449 goto leave; 450 /*NOTREACHED*/ 451 } 452 break; 453 454 default: 455 svcerr_noproc(transp); 456 goto leave; 457 } 458 bzero((char *)&argument, sizeof(argument)); 459 if (!svc_getargs(transp, xdr_argument, (caddr_t)&argument)) { 460 svcerr_decode(transp); 461 goto leave; 462 } 463 result = (*local)(&argument, rqstp); 464 if (result != NULL && !svc_sendreply(transp, xdr_result, result)) { 465 svcerr_systemerr(transp); 466 } 467 if (!svc_freeargs(transp, xdr_argument, (caddr_t)&argument)) { 468 (void)fprintf(stderr, "unable to free arguments\n"); 469 exit(1); 470 } 471 leave: 472 if (from_inetd) 473 exit(0); 474 } 475
Indexes created Tue Sep 30 20:09:53 GMT 2025