rusers_proc.c revision 1.9
1 /*- 2 * Copyright (c) 1993 John Brezak 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR `AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 19 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 22 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 24 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 25 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #ifndef lint 30 static char rcsid[] = "$Id: rusers_proc.c,v 1.9 1995/01/13 19:59:13 mycroft Exp $"; 31 #endif /* not lint */ 32 33 #include <signal.h> 34 #include <sys/types.h> 35 #include <sys/time.h> 36 #include <utmp.h> 37 #include <stdio.h> 38 #include <syslog.h> 39 #include <rpc/rpc.h> 40 #include <sys/socket.h> 41 #include <sys/param.h> 42 #include <sys/stat.h> 43 #ifdef XIDLE 44 #include <setjmp.h> 45 #include <X11/Xlib.h> 46 #include <X11/extensions/xidle.h> 47 #endif 48 #include <rpcsvc/rusers.h> /* New version */ 49 #include <rpcsvc/rnusers.h> /* Old version */ 50 51 #define IGNOREUSER "sleeper" 52 53 #ifdef OSF 54 #define _PATH_UTMP UTMP_FILE 55 #endif 56 57 #ifndef _PATH_UTMP 58 #define _PATH_UTMP "/etc/utmp" 59 #endif 60 61 #ifndef _PATH_DEV 62 #define _PATH_DEV "/dev" 63 #endif 64 65 #ifndef UT_LINESIZE 66 #define UT_LINESIZE sizeof(((struct utmp *)0)->ut_line) 67 #endif 68 #ifndef UT_NAMESIZE 69 #define UT_NAMESIZE sizeof(((struct utmp *)0)->ut_name) 70 #endif 71 #ifndef UT_HOSTSIZE 72 #define UT_HOSTSIZE sizeof(((struct utmp *)0)->ut_host) 73 #endif 74 75 typedef char ut_line_t[UT_LINESIZE]; 76 typedef char ut_name_t[UT_NAMESIZE]; 77 typedef char ut_host_t[UT_HOSTSIZE]; 78 79 struct rusers_utmp utmps[MAXUSERS]; 80 struct utmpidle *utmp_idlep[MAXUSERS]; 81 struct utmpidle utmp_idle[MAXUSERS]; 82 ut_line_t line[MAXUSERS]; 83 ut_name_t name[MAXUSERS]; 84 ut_host_t host[MAXUSERS]; 85 86 extern int from_inetd; 87 88 FILE *ufp; 89 90 #ifdef XIDLE 91 Display *dpy; 92 93 static sigjmp_buf openAbort; 94 95 static void 96 abortOpen() 97 { 98 siglongjmp(openAbort, 1); 99 } 100 101 XqueryIdle(display) 102 char *display; 103 { 104 int first_event, first_error; 105 Time IdleTime; 106 107 (void) signal(SIGALRM, abortOpen); 108 (void) alarm(10); 109 if (!sigsetjmp(openAbort)) { 110 if ((dpy = XOpenDisplay(display)) == NULL) { 111 syslog(LOG_ERR, "cannot open display %s", display); 112 return (-1); 113 } 114 if (XidleQueryExtension(dpy, &first_event, &first_error)) { 115 if (!XGetIdleTime(dpy, &IdleTime)) { 116 syslog(LOG_ERR, "%s: unable to get idle time", display); 117 return (-1); 118 } 119 } else { 120 syslog(LOG_ERR, "%s: Xidle extension not loaded", display); 121 return (-1); 122 } 123 XCloseDisplay(dpy); 124 } else { 125 syslog(LOG_ERR, "%s: server grabbed for over 10 seconds", display); 126 return (-1); 127 } 128 (void) alarm(0); 129 (void) signal(SIGALRM, SIG_DFL); 130 131 IdleTime /= 1000; 132 return ((IdleTime + 30) / 60); 133 } 134 #endif 135 136 static u_int 137 getidle(tty, display) 138 char *tty, *display; 139 { 140 struct stat st; 141 char devname[PATH_MAX]; 142 time_t now; 143 u_long idle; 144 145 /* 146 * If this is an X terminal or console, then try the 147 * XIdle extension 148 */ 149 #ifdef XIDLE 150 if (display && *display && (idle = XqueryIdle(display)) >= 0) 151 return (idle); 152 #endif 153 idle = 0; 154 if (*tty == 'X') { 155 u_long kbd_idle, mouse_idle; 156 #if !defined(i386) 157 kbd_idle = getidle("kbd", NULL); 158 #else 159 #if __GNUC__ >= 2 160 #warning i386 console hack here 161 #endif 162 kbd_idle = getidle("vga", NULL); 163 #endif 164 mouse_idle = getidle("mouse", NULL); 165 idle = (kbd_idle < mouse_idle) ? kbd_idle : mouse_idle; 166 } else { 167 sprintf(devname, "%s/%s", _PATH_DEV, tty); 168 if (stat(devname, &st) < 0) { 169 #ifdef DEBUG 170 printf("%s: %m\n", devname); 171 #endif 172 return (-1); 173 } 174 time(&now); 175 #ifdef DEBUG 176 printf("%s: now=%d atime=%d\n", devname, now, st.st_atime); 177 #endif 178 idle = now - st.st_atime; 179 idle = (idle + 30) / 60; /* secs->mins */ 180 } 181 if (idle < 0) 182 idle = 0; 183 184 return (idle); 185 } 186 187 int * 188 rusers_num() 189 { 190 static int num_users = 0; 191 struct utmp usr; 192 193 ufp = fopen(_PATH_UTMP, "r"); 194 if (!ufp) { 195 syslog(LOG_ERR, "%m"); 196 return (0); 197 } 198 199 /* only entries with both name and line fields */ 200 while (fread((char *)&usr, sizeof(usr), 1, ufp) == 1) 201 if (*usr.ut_name && *usr.ut_line && 202 strncmp(usr.ut_name, IGNOREUSER, 203 sizeof(usr.ut_name)) 204 #ifdef OSF 205 && usr.ut_type == USER_PROCESS 206 #endif 207 ) { 208 num_users++; 209 } 210 211 fclose(ufp); 212 return (&num_users); 213 } 214 215 static utmp_array * 216 do_names_3(int all) 217 { 218 static utmp_array ut; 219 struct utmp usr; 220 int nusers = 0; 221 222 bzero((char *)&ut, sizeof(ut)); 223 ut.utmp_array_val = &utmps[0]; 224 225 ufp = fopen(_PATH_UTMP, "r"); 226 if (!ufp) { 227 syslog(LOG_ERR, "%m"); 228 return (NULL); 229 } 230 231 /* only entries with both name and line fields */ 232 while (fread((char *)&usr, sizeof(usr), 1, ufp) == 1 && 233 nusers < MAXUSERS) 234 if (*usr.ut_name && *usr.ut_line && 235 strncmp(usr.ut_name, IGNOREUSER, 236 sizeof(usr.ut_name)) 237 #ifdef OSF 238 && usr.ut_type == USER_PROCESS 239 #endif 240 ) { 241 utmps[nusers].ut_type = RUSERS_USER_PROCESS; 242 utmps[nusers].ut_time = 243 usr.ut_time; 244 utmps[nusers].ut_idle = 245 getidle(usr.ut_line, usr.ut_host); 246 utmps[nusers].ut_line = line[nusers]; 247 strncpy(line[nusers], usr.ut_line, sizeof(line[nusers])); 248 utmps[nusers].ut_user = name[nusers]; 249 strncpy(name[nusers], usr.ut_name, sizeof(name[nusers])); 250 utmps[nusers].ut_host = host[nusers]; 251 strncpy(host[nusers], usr.ut_host, sizeof(host[nusers])); 252 nusers++; 253 } 254 ut.utmp_array_len = nusers; 255 256 fclose(ufp); 257 return (&ut); 258 } 259 260 utmp_array * 261 rusersproc_names_3() 262 { 263 return (do_names_3(0)); 264 } 265 266 utmp_array * 267 rusersproc_allnames_3() 268 { 269 return (do_names_3(1)); 270 } 271 272 static struct utmpidlearr * 273 do_names_2(int all) 274 { 275 static struct utmpidlearr ut; 276 struct utmp usr; 277 int nusers = 0; 278 279 bzero((char *)&ut, sizeof(ut)); 280 ut.uia_arr = utmp_idlep; 281 ut.uia_cnt = 0; 282 283 ufp = fopen(_PATH_UTMP, "r"); 284 if (!ufp) { 285 syslog(LOG_ERR, "%m"); 286 return (NULL); 287 } 288 289 /* only entries with both name and line fields */ 290 while (fread((char *)&usr, sizeof(usr), 1, ufp) == 1 && 291 nusers < MAXUSERS) 292 if (*usr.ut_name && *usr.ut_line && 293 strncmp(usr.ut_name, IGNOREUSER, 294 sizeof(usr.ut_name)) 295 #ifdef OSF 296 && usr.ut_type == USER_PROCESS 297 #endif 298 ) { 299 utmp_idlep[nusers] = &utmp_idle[nusers]; 300 utmp_idle[nusers].ui_utmp.ut_time = 301 usr.ut_time; 302 utmp_idle[nusers].ui_idle = 303 getidle(usr.ut_line, usr.ut_host); 304 strncpy(utmp_idle[nusers].ui_utmp.ut_line, usr.ut_line, sizeof(utmp_idle[nusers].ui_utmp.ut_line)); 305 strncpy(utmp_idle[nusers].ui_utmp.ut_name, usr.ut_name, sizeof(utmp_idle[nusers].ui_utmp.ut_name)); 306 strncpy(utmp_idle[nusers].ui_utmp.ut_host, usr.ut_host, sizeof(utmp_idle[nusers].ui_utmp.ut_host)); 307 nusers++; 308 } 309 310 ut.uia_cnt = nusers; 311 fclose(ufp); 312 return (&ut); 313 } 314 315 struct utmpidlearr * 316 rusersproc_names_2() 317 { 318 return (do_names_2(0)); 319 } 320 321 struct utmpidlearr * 322 rusersproc_allnames_2() 323 { 324 return (do_names_2(1)); 325 } 326 327 void 328 rusers_service(rqstp, transp) 329 struct svc_req *rqstp; 330 SVCXPRT *transp; 331 { 332 union { 333 int fill; 334 } argument; 335 char *result; 336 bool_t (*xdr_argument)(), (*xdr_result)(); 337 char *(*local)(); 338 339 switch (rqstp->rq_proc) { 340 case NULLPROC: 341 (void)svc_sendreply(transp, xdr_void, (char *)NULL); 342 goto leave; 343 344 case RUSERSPROC_NUM: 345 xdr_argument = xdr_void; 346 xdr_result = xdr_int; 347 switch (rqstp->rq_vers) { 348 case RUSERSVERS_3: 349 case RUSERSVERS_IDLE: 350 local = (char *(*)()) rusers_num; 351 break; 352 default: 353 svcerr_progvers(transp, RUSERSVERS_IDLE, RUSERSVERS_3); 354 goto leave; 355 /*NOTREACHED*/ 356 } 357 break; 358 359 case RUSERSPROC_NAMES: 360 xdr_argument = xdr_void; 361 xdr_result = xdr_utmp_array; 362 switch (rqstp->rq_vers) { 363 case RUSERSVERS_3: 364 local = (char *(*)()) rusersproc_names_3; 365 break; 366 367 case RUSERSVERS_IDLE: 368 xdr_result = xdr_utmpidlearr; 369 local = (char *(*)()) rusersproc_names_2; 370 break; 371 372 default: 373 svcerr_progvers(transp, RUSERSVERS_IDLE, RUSERSVERS_3); 374 goto leave; 375 /*NOTREACHED*/ 376 } 377 break; 378 379 case RUSERSPROC_ALLNAMES: 380 xdr_argument = xdr_void; 381 xdr_result = xdr_utmp_array; 382 switch (rqstp->rq_vers) { 383 case RUSERSVERS_3: 384 local = (char *(*)()) rusersproc_allnames_3; 385 break; 386 387 case RUSERSVERS_IDLE: 388 xdr_result = xdr_utmpidlearr; 389 local = (char *(*)()) rusersproc_allnames_2; 390 break; 391 392 default: 393 svcerr_progvers(transp, RUSERSVERS_IDLE, RUSERSVERS_3); 394 goto leave; 395 /*NOTREACHED*/ 396 } 397 break; 398 399 default: 400 svcerr_noproc(transp); 401 goto leave; 402 } 403 bzero((char *)&argument, sizeof(argument)); 404 if (!svc_getargs(transp, xdr_argument, (caddr_t)&argument)) { 405 svcerr_decode(transp); 406 goto leave; 407 } 408 result = (*local)(&argument, rqstp); 409 if (result != NULL && !svc_sendreply(transp, xdr_result, result)) { 410 svcerr_systemerr(transp); 411 } 412 if (!svc_freeargs(transp, xdr_argument, (caddr_t)&argument)) { 413 (void)fprintf(stderr, "unable to free arguments\n"); 414 exit(1); 415 } 416 leave: 417 if (from_inetd) 418 exit(0); 419 } 420
Indexes created Tue Sep 30 20:09:53 GMT 2025