main.c

   1 /*****************************************************************************\
   2 **                                                                           **
   3 ** Linux Call Router                                                         **
   4 **                                                                           **
   5 **---------------------------------------------------------------------------**
   6 ** Copyright: Andreas Eversberg                                              **
   7 **                                                                           **
   8 ** Main function                                                             **
   9 **                                                                           **
  10 \*****************************************************************************/
  11
  12 #include "main.h"
  13
  14 MESSAGES
  15
  16 double now_d, last_d;
  17 time_t now;
  18 struct tm *now_tm;
  19 struct timeval now_tv;
  20 struct timezone now_tz;
  21 #define GET_NOW() \
  22         { \
  23                 gettimeofday(&now_tv, &now_tz); \
  24                 now_d = ((double)(now_tv.tv_usec))/1000000 + now_tv.tv_sec; \
  25                 now = now_tv.tv_sec; \
  26                 now_tm = localtime(&now); \
  27         }
  28
  29 FILE *debug_fp = NULL;
  30 int quit=0;
  31
  32 #if 0
  33 struct lcr_fdset lcr_fdset[FD_SETSIZE];
  34 #endif
  35
  36 pthread_mutex_t mutexd; // debug output mutex
  37 pthread_mutex_t mutext; // trace output mutex
  38 pthread_mutex_t mutexe; // error output mutex
  39 //pthread_mutex_t mutex_lcr; // lcr process mutex
  40
  41 int memuse = 0;
  42 int mmemuse = 0;
  43 int cmemuse = 0;
  44 int ememuse = 0;
  45 int pmemuse = 0;
  46 int amemuse = 0;
  47 int rmemuse = 0;
  48 int classuse = 0;
  49 int fduse = 0;
  50 int fhuse = 0;
  51
  52 char *debug_prefix = 0;
  53 int debug_count = 0;
  54 int last_debug = 0;
  55 int debug_newline = 1;
  56 int nooutput = 0;
  57
  58 void debug_usleep(int msec, char *file, int line, int hour, int min, int sec)
  59 {
  60         usleep(msec);
  61 }
  62
  63 void debug(const char *function, int line, char *prefix, char *buffer)
  64 {
  65         /* if we have a new debug count, we add a mark */
  66         if (last_debug != debug_count)
  67         {
  68                 last_debug = debug_count;
  69                 if (!nooutput)
  70                         printf("\033[34m--------------------- %04d.%02d.%02d %02d:%02d:%02d %06d\033[36m\n", now_tm->tm_year+1900, now_tm->tm_mon+1, now_tm->tm_mday, now_tm->tm_hour, now_tm->tm_min, now_tm->tm_sec, debug_count%1000000);
  71                 if (debug_fp)
  72                         fprintf(debug_fp, "--------------------- %04d.%02d.%02d %02d:%02d:%02d %06d\n", now_tm->tm_year+1900, now_tm->tm_mon+1, now_tm->tm_mday, now_tm->tm_hour, now_tm->tm_min, now_tm->tm_sec, debug_count%1000000);
  73         }
  74
  75         if (!nooutput)
  76         {
  77                 if (debug_newline)
  78                         printf("\033[32m%06d %s\033[37m%s", debug_count%1000000, prefix?prefix:"", prefix?" ":"");
  79                 if (function)
  80                         printf("(in %s() line %d): %s", function, line, buffer);
  81                 else
  82                         printf("%s", buffer);
  83         }
  84
  85         if (debug_fp)
  86         {
  87                 if (debug_newline)
  88                 {
  89                         if (function)
  90                                 fprintf(debug_fp, "%s%s(in %s() line %d): %s", prefix?prefix:"", prefix?" ":"", function, line, buffer);
  91                         else
  92                                 fprintf(debug_fp, "%s%s: %s", prefix?prefix:"", prefix?" ":"", buffer);
  93                 }
  94         }
  95
  96         debug_newline = 0;
  97         if (buffer[0])
  98                 if (buffer[strlen(buffer)-1] == '\n')
  99                         debug_newline = 1;
 100 }
 101
 102
 103 void _printdebug(const char *function, int line, unsigned int mask, const char *fmt, ...)
 104 {
 105         char buffer[4096];
 106         va_list args;
 107
 108         if (!(options.deb & mask))
 109                 return;
 110         pthread_mutex_lock(&mutexd);
 111
 112         va_start(args,fmt);
 113         VUNPRINT(buffer,sizeof(buffer)-1,fmt,args);
 114         buffer[sizeof(buffer)-1]=0;
 115         va_end(args);
 116
 117         debug(function, line, debug_prefix, buffer);
 118
 119         pthread_mutex_unlock(&mutexd);
 120 }
 121
 122 void _printerror(const char *function, int line, const char *fmt, ...)
 123 {
 124         char buffer[4096];
 125         va_list args;
 126
 127         pthread_mutex_lock(&mutexe);
 128
 129         va_start(args,fmt);
 130         VUNPRINT(buffer,sizeof(buffer)-1,fmt,args);
 131         buffer[sizeof(buffer)-1]=0;
 132         va_end(args);
 133
 134         if (options.deb)
 135                 debug(function, line, "ERROR", buffer);
 136         else /* only if we do not debug */
 137         {
 138                 if (function)
 139                         fprintf(stderr, "ERROR (in %s() line %d) %s", function, line, buffer);
 140                 else
 141                         fprintf(stderr, "ERROR %s", buffer);
 142         }
 143
 144         pthread_mutex_unlock(&mutexe);
 145 }
 146
 147
 148 void sighandler(int sigset)
 149 {
 150         struct sched_param schedp;
 151
 152         if (sigset == SIGHUP)
 153                 return;
 154         if (sigset == SIGPIPE)
 155                 return;
 156         if (!quit)
 157         {
 158                 quit = sigset;
 159                 /* set scheduler & priority */
 160                 if (options.schedule > 1)
 161                 {
 162                         memset(&schedp, 0, sizeof(schedp));
 163                         schedp.sched_priority = 0;
 164                         sched_setscheduler(0, SCHED_OTHER, &schedp);
 165                 }
 166                 fprintf(stderr, "LCR: Signal received: %d\n", sigset);
 167                 PDEBUG(DEBUG_LOG, "Signal received: %d\n", sigset);
 168         }
 169 }
 170
 171
 172 /*
 173  * the main
 174  */
 175 int main(int argc, char *argv[])
 176 {
 177         int                     ret = -1;
 178         int                     lockfd = -1; /* file lock */
 179         struct lcr_msg          *message;
 180         class Port              *port;
 181         class Endpoint          *epoint;
 182         class Join              *join;
 183         int                     i;
 184         int                     all_idle;
 185         char                    prefix_string[64];
 186         struct sched_param      schedp;
 187         char                    *debug_prefix = "alloc";
 188         int                     created_mutexd = 0,/* created_mutext = 0,*/ created_mutexe = 0,
 189                                 created_lock = 0, created_signal = 0, created_debug = 0,
 190                                 created_misdn = 0;
 191         int                     idletime = 0, idlecheck = 0;
 192         char                    tracetext[256];
 193
 194 #if 0
 195         /* init fdset */
 196         memset(lcr_fdset, 0, sizeof(lcr_fdset));
 197 #endif
 198
 199         /* lock LCR process */
 200 //      pthread_mutex_lock(&mutex_lcr);
 201
 202         /* current time */
 203         GET_NOW();
 204
 205         /* show version */
 206         printf("\n** %s  Version %s\n\n", NAME, VERSION_STRING);
 207
 208         /* show options */
 209         if (argc <= 1)
 210         {
 211                 usage:
 212                 printf("\n");
 213                 printf("Usage: lcr (query | start | fork | rules | route)\n");
 214                 printf("query     = Show available isdn ports.\n");
 215                 printf("start     = Run lcr normally, abort with CTRL+C.\n");
 216                 printf("fork      = Do daemon fork and run as background process.\n");
 217                 printf("interface = Get help of available interface syntax.\n");
 218                 printf("rules     = Get help of available routing rule syntax.\n");
 219                 printf("rules [action] = Get individual help for given action.\n");
 220 //              printf("route = Show current routing as it is parsed.\n");
 221                 printf("\n");
 222                 ret = 999;
 223                 goto free;
 224         }
 225
 226         /* init crc */
 227         crc_init();
 228
 229         /* check for root (real or effective) */
 230         if (getuid() && geteuid())
 231         {
 232                 fprintf(stderr, "Please run %s as super-user.\n", NAME);
 233                 goto free;
 234         }
 235
 236         /* the mutex init */
 237         if (pthread_mutex_init(&mutexd, NULL))
 238         {
 239                 fprintf(stderr, "cannot create 'PDEBUG' mutex\n");
 240                 goto free;
 241         }
 242         created_mutexd = 1;
 243 //      if (pthread_mutex_init(&mutext, NULL))
 244 //      {
 245 //              fprintf(stderr, "cannot create 'trace' mutex\n");
 246 //              goto free;
 247 //      }
 248 //      created_mutext = 1;
 249         if (pthread_mutex_init(&mutexe, NULL))
 250         {
 251                 fprintf(stderr, "cannot create 'PERROR' mutex\n");
 252                 goto free;
 253         }
 254         created_mutexe = 1;
 255
 256         /* show interface */
 257         if (!(strcasecmp(argv[1],"interface")))
 258         {
 259                 doc_interface();
 260                 ret = 0;
 261                 goto free;
 262         }
 263
 264         /* show rules */
 265         if (!(strcasecmp(argv[1],"rules")))
 266         {
 267                 if (argc <= 2)
 268                         doc_rules(NULL);
 269                 else
 270                         doc_rules(argv[2]);
 271                 ret = 0;
 272                 goto free;
 273         }
 274
 275         /* query available isdn ports */
 276         if (!(strcasecmp(argv[1],"query")))
 277         {
 278                 fprintf(stderr, "-> Using 'isdninfo'\n");
 279                 system("isdninfo");
 280                 ret = 0;
 281                 goto free;
 282         }
 283
 284         /* read options */
 285         if (read_options() == 0)
 286         {
 287                 PERROR("%s", options_error);
 288                 goto free;
 289         }
 290
 291         /* init mISDN */
 292         if (mISDN_initialize() < 0)
 293                 goto free;
 294         created_misdn = 1;
 295         created_debug = 1;
 296
 297         /* read ruleset(s) */
 298         if (!(ruleset_first = ruleset_parse()))
 299                 goto free;
 300
 301         /* set pointer to main ruleset */
 302         ruleset_main = getrulesetbyname("main");
 303         if (!ruleset_main)
 304         {
 305                 fprintf(stderr, "\n***\n -> Missing 'main' ruleset, causing ALL calls to be disconnected.\n***\n\n");
 306                 PDEBUG(DEBUG_LOG, "Missing 'main' ruleset, causing ALL calls to be disconnected.\n");
 307                 sleep(2);
 308         }
 309
 310 #if 0
 311         /* query available isdn ports */
 312         if (!(strcasecmp(argv[1],"route")))
 313         {
 314                 ruleset_debug(ruleset_first);
 315                 ret = 0;
 316                 goto free;
 317         }
 318 #endif
 319
 320         /* do fork in special cases */
 321         if (!(strcasecmp(argv[1],"fork")))
 322         {
 323                 pid_t pid;
 324
 325                 /* do daemon fork */
 326                 pid = fork();
 327
 328                 if (pid < 0)
 329                 {
 330                         fprintf(stderr, "Cannot fork!\n");
 331                         goto free;
 332                 }
 333                 if (pid != 0)
 334                 {
 335                         exit(0);
 336                 }
 337                 usleep(200000);
 338                 printf("\n");
 339
 340                 /* do second fork */
 341                 pid = fork();
 342
 343                 if (pid < 0)
 344                 {
 345                         fprintf(stderr, "Cannot fork!\n");
 346                         goto free;
 347                 }
 348                 if (pid != 0)
 349                 {
 350                         printf("LCR: Starting daemon.\n");
 351                         exit(0);
 352                 }
 353                 nooutput = 1;
 354         } else
 355         /* if not start */
 356         if (!!strcasecmp(argv[1],"start"))
 357         {
 358                 goto usage;
 359         }
 360
 361         /* create lock and lock! */
 362         if ((lockfd = open("/var/run/lcr.lock", O_CREAT, 0)) < 0)
 363         {
 364                 fprintf(stderr, "Cannot create lock file: /var/run/lcr.lock\n");
 365                 goto free;
 366         }
 367         if (flock(lockfd, LOCK_EX|LOCK_NB) < 0)
 368         {
 369                 if (errno == EWOULDBLOCK)
 370                         fprintf(stderr, "LCR: Another LCR process is running. Please kill the other one.\n");
 371                 else    fprintf(stderr, "Locking process failed: errno=%d\n", errno);
 372                 goto free;
 373         }
 374         created_lock = 1;
 375
 376         /* initialize admin socket */
 377         if (admin_init())
 378         {
 379                 fprintf(stderr, "Unable to initialize admin socket.\n");
 380                 goto free;
 381         }
 382
 383         /* generate alaw / ulaw tables */
 384         generate_tables(options.law);
 385
 386         /* load tones (if requested) */
 387         if (fetch_tones() == 0)
 388         {
 389                 fprintf(stderr, "Unable to fetch tones into memory.\n");
 390                 goto free;
 391         }
 392
 393         /* read interfaces and open ports */
 394         if (!read_interfaces())
 395         {
 396                 PERROR_RUNTIME("No interfaces specified or failed to parse interface.conf.\n");
 397                 fprintf(stderr, "No interfaces specified or failed to parse interface.conf.\n");
 398                 goto free;
 399         }
 400         relink_interfaces();
 401         interface_first = interface_newlist;
 402         interface_newlist = NULL;
 403
 404         /* locking memory paging */
 405         i = 0;
 406         while(i < 10)
 407         {
 408                 if (mlockall(MCL_CURRENT | MCL_FUTURE) >= 0)
 409                         break;
 410                 usleep(200000);
 411                 i++;
 412         }
 413         if (i == 10)
 414         {
 415                 switch(errno)
 416                 {
 417                         case ENOMEM:
 418                         fprintf(stderr, "Not enough memory to lock paging, exitting...\n");
 419                         break;
 420                         case EPERM:
 421                         fprintf(stderr, "No permission to lock paging, exitting...\n");
 422                         break;
 423                         case EFAULT:
 424                         fprintf(stderr, "'Bad address' while locking paging, exitting...\n");
 425                         break;
 426                         default:
 427                         fprintf(stderr, "Unknown error %d while locking paging, exitting...\n", errno);
 428                 }
 429                 goto free;
 430         }
 431
 432         /* set real time scheduler & priority */
 433         if (options.schedule > 1)
 434         {
 435                 memset(&schedp, 0, sizeof(schedp));
 436                 schedp.sched_priority = options.schedule;
 437                 ret = sched_setscheduler(0, SCHED_RR, &schedp);
 438                 if (ret < 0)
 439                 {
 440                         PERROR("Scheduling failed with given priority %d (errno = %d).\nCheck options.conf 'schedule', exitting...\n", options.schedule, errno);
 441                         goto free;
 442                 }
 443         }
 444
 445         /* signal handlers */
 446         signal(SIGINT,sighandler);
 447         signal(SIGHUP,sighandler);
 448         signal(SIGTERM,sighandler);
 449         signal(SIGPIPE,sighandler);
 450         created_signal = 1;
 451
 452         /*** main loop ***/
 453         SPRINT(tracetext, "%s %s started, waiting for calls...", NAME, VERSION_STRING);
 454         start_trace(0, NULL, NULL, NULL, 0, 0, 0, tracetext);
 455         printf("%s\n", tracetext);
 456         end_trace();
 457         GET_NOW();
 458         quit = 0;
 459         while(!quit)
 460         {
 461
 462                 last_d = now_d;
 463                 GET_NOW();
 464                 if (now_d-last_d > 1.0)
 465                 {
 466                         PERROR("LCR was stalling %d.%d seconds\n", ((int)((now_d-last_d)*10.0))/10, (int)((now_d-last_d)*10.0));
 467                 }
 468                 /* all loops must be counted from the beginning since nodes might get freed during handler */
 469                 all_idle = 1;
 470
 471 //#warning debugging usleep crash
 472 //              debug_usleep(1, __FILE__, __LINE__, now_tm->tm_hour, now_tm->tm_min, now_tm->tm_sec);
 473
 474                 /* handle mISDN messages from kernel */
 475                 debug_prefix = "ISDN";
 476                 if (mISDN_handler())
 477                         all_idle = 0;
 478 //#warning debugging usleep crash
 479 //              debug_usleep(1, __FILE__, __LINE__, now_tm->tm_hour, now_tm->tm_min, now_tm->tm_sec);
 480
 481 BUDETECT
 482
 483                 /* loop through all port ports and call their handler */
 484                 port_again:
 485                 port = port_first;
 486                 while(port)
 487                 {
 488                         debug_prefix = port->p_name;
 489                         debug_count++;
 490                         ret = port->handler();
 491                         if (ret)
 492                                 all_idle = 0;
 493                         if (ret < 0) /* port has been destroyed */
 494                                 goto port_again;
 495                         port = port->next;
 496                 }
 497
 498                 /* loop through all epoint and call their handler */
 499                 epoint_again:
 500                 epoint = epoint_first;
 501                 while(epoint)
 502                 {
 503                         debug_prefix = prefix_string;
 504                         SPRINT(prefix_string, "ep%ld", epoint->ep_serial);
 505                         debug_count++;
 506                         ret = epoint->handler();
 507                         if (ret)
 508                                 all_idle = 0;
 509                         if (ret < 0) /* epoint has been destroyed */
 510                                 goto epoint_again;
 511                         epoint = epoint->next;
 512                 }
 513
 514                 /* loop through all joins and call their handler */
 515                 join_again:
 516                 join = join_first;
 517                 while(join)
 518                 {
 519                         debug_prefix = "join";
 520                         debug_count++;
 521                         ret = join->handler();
 522                         if (ret)
 523                                 all_idle = 0;
 524                         if (ret < 0) /* join has been destroyed */
 525                                 goto join_again;
 526                         join = join->next;
 527                 }
 528
 529                 debug_prefix = 0;
 530
 531                 /* process any message */
 532                 debug_count++;
 533                 debug_prefix = "message";
 534                 while ((message = message_get()))
 535                 {
 536                         all_idle = 0;
 537                         switch(message->flow)
 538                         {
 539                                 case PORT_TO_EPOINT:
 540                                 debug_prefix = "msg port->epoint";
 541                                 epoint = find_epoint_id(message->id_to);
 542                                 if (epoint)
 543                                 {
 544                                         if (epoint->ep_app)
 545                                         {
 546                                                 epoint->ep_app->ea_message_port(message->id_from, message->type, &message->param);
 547                                         } else
 548                                         {
 549                                                 PDEBUG(DEBUG_MSG, "Warning: message %s from port %d to endpoint %d. endpoint doesn't have an application.\n", messages_txt[message->type], message->id_from, message->id_to);
 550                                         }
 551                                 } else
 552                                 {
 553                                         PDEBUG(DEBUG_MSG, "Warning: message %s from port %d to endpoint %d. endpoint doesn't exist anymore.\n", messages_txt[message->type], message->id_from, message->id_to);
 554                                 }
 555                                 break;
 556
 557                                 case EPOINT_TO_JOIN:
 558                                 debug_prefix = "msg epoint->join";
 559                                 join = find_join_id(message->id_to);
 560                                 if (join)
 561                                 {
 562                                         join->message_epoint(message->id_from, message->type, &message->param);
 563                                 } else
 564                                 {
 565                                         PDEBUG(DEBUG_MSG, "Warning: message %s from endpoint %d to join %d. join doesn't exist anymore\n", messages_txt[message->type], message->id_from, message->id_to);
 566                                 }
 567                                 break;
 568
 569                                 case JOIN_TO_EPOINT:
 570                                 debug_prefix = "msg join->epoint";
 571                                 epoint = find_epoint_id(message->id_to);
 572                                 if (epoint)
 573                                 {
 574                                         if (epoint->ep_app)
 575                                         {
 576                                                 epoint->ep_app->ea_message_join(message->id_from, message->type, &message->param);
 577                                         } else
 578                                         {
 579                                                 PDEBUG(DEBUG_MSG, "Warning: message %s from join %d to endpoint %d. endpoint doesn't have an application.\n", messages_txt[message->type], message->id_from, message->id_to);
 580                                         }
 581                                 } else
 582                                 {
 583                                         PDEBUG(DEBUG_MSG, "Warning: message %s from join %d to endpoint %d. endpoint doesn't exist anymore.\n", messages_txt[message->type], message->id_from, message->id_to);
 584                                 }
 585                                 break;
 586
 587                                 case EPOINT_TO_PORT:
 588                                 debug_prefix = "msg epoint->port";
 589                                 port = find_port_id(message->id_to);
 590                                 if (port)
 591                                 {
 592                                         port->message_epoint(message->id_from, message->type, &message->param);
 593 BUDETECT
 594                                 } else
 595                                 {
 596                                         PDEBUG(DEBUG_MSG, "Warning: message %s from endpoint %d to port %d. port doesn't exist anymore\n", messages_txt[message->type], message->id_from, message->id_to);
 597                                 }
 598                                 break;
 599
 600                                 default:
 601                                 PERROR("Message flow %d unknown.\n", message->flow);
 602                         }
 603                         message_free(message);
 604                         debug_count++;
 605                         debug_prefix = "message";
 606                 }
 607 BUDETECT
 608
 609                 /* handle socket */
 610                 if (admin_handle())
 611                         all_idle = 0;
 612 BUDETECT
 613
 614 #if 0
 615                 /* check for child to exit (eliminate zombies) */
 616                 if (waitpid(-1, NULL, WNOHANG) > 0)
 617                 {
 618                         PDEBUG(DEBUG_EPOINT, "a child process (created by endpoint) has exitted.\n");
 619                         all_idle = 0;
 620                 }
 621 #endif
 622 //#warning debugging usleep crash
 623 //              debug_usleep(1, __FILE__, __LINE__, now_tm->tm_hour, now_tm->tm_min, now_tm->tm_sec);
 624
 625                 /* do idle checking */
 626                 if (idlecheck != now)
 627                 {
 628                         PDEBUG(DEBUG_IDLETIME, "Idle time : %d%%\n", idletime/10000);
 629                         idletime = 0;
 630                         idlecheck = now;
 631                 }
 632
 633                 /* did we do nothing? so we wait to give time to other processes */
 634                 if (all_idle)
 635                 {
 636 //                      pthread_mutex_unlock(&mutex_lcr); // unlock LCR
 637                         debug_usleep(4000, __FILE__, __LINE__, now_tm->tm_hour, now_tm->tm_min, now_tm->tm_sec);
 638 //                      pthread_mutex_lock(&mutex_lcr); // lock LCR
 639                         idletime += 4000;
 640                 }
 641         }
 642         SPRINT(tracetext, "%s terminated", NAME);
 643         printf("%s\n", tracetext);
 644         start_trace(0, NULL, NULL, NULL, 0, 0, 0, tracetext);
 645         if (quit)
 646                 add_trace("signal", NULL, "%d", quit);
 647         end_trace();
 648         ret=0;
 649
 650         /* free all */
 651 free:
 652
 653
 654         /* set scheduler & priority
 655          */
 656         if (options.schedule > 1)
 657         {
 658                 memset(&schedp, 0, sizeof(schedp));
 659                 schedp.sched_priority = options.schedule;
 660                 sched_setscheduler(0, SCHED_OTHER, &schedp);
 661         }
 662         /* reset signals */
 663         if (created_signal)
 664         {
 665                 signal(SIGINT,SIG_DFL);
 666                 signal(SIGHUP,SIG_DFL);
 667                 signal(SIGTERM,SIG_DFL);
 668                 signal(SIGPIPE,SIG_DFL);
 669         }
 670
 671         /* destroy objects */
 672         debug_prefix = "free";
 673
 674         while(port_first)
 675         {
 676                 debug_count++;
 677                 delete port_first;
 678         }
 679         while(epoint_first)
 680         {
 681                 debug_count++;
 682                 delete epoint_first;
 683         }
 684         epoint_first = NULL;
 685         debug_count++;
 686         join_free();
 687
 688         /* free interfaces */
 689         if (interface_first)
 690                 free_interfaces(interface_first);
 691         interface_first = NULL;
 692
 693         /* close isdn ports */
 694         mISDNport_close_all();
 695
 696         /* flush messages */
 697         debug_count++;
 698         i = 0;
 699         while ((message = message_get()))
 700         {
 701                 i++;
 702                 message_free(message);
 703         }
 704         if (i)
 705         {
 706                 PDEBUG(DEBUG_MSG, "freed %d pending messages\n", i);
 707         }
 708
 709         /* free tones */
 710         if (toneset_first)
 711                 free_tones();
 712
 713         /* free admin socket */
 714         admin_cleanup();
 715
 716         /* close lock */
 717         if (created_lock)
 718                 flock(lockfd, LOCK_UN);
 719         if (lockfd >= 0)
 720                 close(lockfd);
 721
 722         /* free rulesets */
 723         if (ruleset_first)
 724                 ruleset_free(ruleset_first);
 725         ruleset_first = NULL;
 726
 727         /* free mutex */
 728         if (created_mutexe)
 729                 if (pthread_mutex_destroy(&mutexe))
 730                         fprintf(stderr, "cannot destroy 'PERROR' mutex\n");
 731 //      if (created_mutext)
 732 //              if (pthread_mutex_destroy(&mutext))
 733 //                      fprintf(stderr, "cannot destroy 'trace' mutex\n");
 734         if (created_mutexd)
 735                 if (pthread_mutex_destroy(&mutexd))
 736                         fprintf(stderr, "cannot destroy 'PDEBUG' mutex\n");
 737
 738         /* deinitialize mISDN */
 739         if (created_misdn)
 740                 mISDN_deinitialize();
 741
 742         /* display memory leak */
 743 #define MEMCHECK(a, b) \
 744         if (b) \
 745         { \
 746                 SPRINT(tracetext, a, NAME); \
 747                 start_trace(0, NULL, NULL, NULL, 0, 0, 0, tracetext); \
 748                 if (ret) add_trace("blocks", NULL, "%d", b); \
 749                 end_trace(); \
 750                 printf("\n******************************\n\007"); \
 751                 printf("\nERROR: %d %s\n", b, a); \
 752                 printf("\n******************************\n"); \
 753                 ret = -1; \
 754         }
 755         MEMCHECK("",memuse)
 756         MEMCHECK("memory block(s) left (port.cpp ...)",pmemuse)
 757         MEMCHECK("memory block(s) left (epoint*.cpp ...)",ememuse)
 758         MEMCHECK("memory block(s) left (join*.cpp)",cmemuse)
 759         MEMCHECK("memory block(s) left (message.c)",mmemuse)
 760         MEMCHECK("memory block(s) left (route.c)",rmemuse)
 761         MEMCHECK("memory block(s) left (args)",amemuse)
 762         MEMCHECK("class(es) left",classuse)
 763         MEMCHECK("file descriptor(s) left",fduse)
 764         MEMCHECK("file handler(s) left",fhuse)
 765
 766         /* unlock LCR process */
 767 //      pthread_mutex_unlock(&mutex_lcr);
 768
 769         /* take me out */
 770         return(ret);
 771 }
 772
 773
 774 #ifdef BUDETECT_DEF
 775 /* special debug function to detect buffer overflow
 776  */
 777 int budetect_stop = 0;
 778 void budetect(const char *file, int line, char *function)
 779 {
 780         if (budetect_stop)
 781                 return;
 782         /* modify this function to detect race-bugs */
 783 #warning DID YOU MODIFY THIS FUNCTION TO DETECT THE BUFFER OVERFLOW BUG?
 784         class Port *port;
 785         class PmISDN *pmisdn;
 786         struct mISDNport *mISDNport = mISDNport_first;
 787         int i, ii;
 788
 789         while(mISDNport)
 790         {
 791                 i = 0;
 792                 ii = mISDNport->b_num;
 793                 while(i < ii)
 794                 {
 795                         if (mISDNport->b_port[i])
 796                         {
 797                                 port = port_first;
 798                                 while(port)
 799                                 {
 800                                         if ((port->p_type&PORT_CLASS_MASK) == PORT_CLASS_ISDN)
 801                                         {
 802                                                 pmisdn = (class PmISDN *)port;
 803                                                 if (pmisdn->p_isdn_crypt_listen)
 804                                                 {
 805                                                         PERROR_RUNTIME("************************************************\n");
 806                                                         PERROR_RUNTIME("** BUG detected in %s, line %d, function %s\n", file, line, function);
 807                                                         PERROR_RUNTIME("** p_isdn_crypt_listen = %d\n", pmisdn->p_isdn_crypt_listen);
 808                                                         PERROR_RUNTIME("************************************************\n");
 809                                                         budetect_stop = 1;
 810                                                 }
 811                                         }
 812                                         if (port == mISDNport->b_port[i])
 813                                                 break;
 814                                         port = port->next;
 815                                         if (!port)
 816                                         {
 817                                                 PERROR_RUNTIME("************************************************\n");
 818                                                 PERROR_RUNTIME("** BUG detected in %s, line %d, function %s\n", file, line, function);
 819                                                 PERROR_RUNTIME("** b_port not in list.\n");
 820                                                 PERROR_RUNTIME("************************************************\n");
 821                                                 budetect_stop = 1;
 822                                         }
 823                                 }
 824                         }
 825                         i++;
 826                 }
 827                 mISDNport = mISDNport->next;
 828         }
 829
 830 }
 831 #endif
 832