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 const char *debug_prefix = NULL;
  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, const char *file, int line, int hour, int min, int sec)
  59 {
  60         usleep(msec);
  61 }
  62
  63 void debug(const char *function, int line, const 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         const 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], lock[128];
 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         /* the mutex init */
 230         if (pthread_mutex_init(&mutexd, NULL))
 231         {
 232                 fprintf(stderr, "cannot create 'PDEBUG' mutex\n");
 233                 goto free;
 234         }
 235         created_mutexd = 1;
 236 //      if (pthread_mutex_init(&mutext, NULL))
 237 //      {
 238 //              fprintf(stderr, "cannot create 'trace' mutex\n");
 239 //              goto free;
 240 //      }
 241 //      created_mutext = 1;
 242         if (pthread_mutex_init(&mutexe, NULL))
 243         {
 244                 fprintf(stderr, "cannot create 'PERROR' mutex\n");
 245                 goto free;
 246         }
 247         created_mutexe = 1;
 248
 249         /* show interface */
 250         if (!(strcasecmp(argv[1],"interface")))
 251         {
 252                 doc_interface();
 253                 ret = 0;
 254                 goto free;
 255         }
 256
 257         /* show rules */
 258         if (!(strcasecmp(argv[1],"rules")))
 259         {
 260                 if (argc <= 2)
 261                         doc_rules(NULL);
 262                 else
 263                         doc_rules(argv[2]);
 264                 ret = 0;
 265                 goto free;
 266         }
 267
 268         /* query available isdn ports */
 269         if (!(strcasecmp(argv[1],"query")))
 270         {
 271                 fprintf(stderr, "-> Using 'misdn_info'\n");
 272                 system("misdn_info");
 273                 ret = 0;
 274                 goto free;
 275         }
 276
 277         /* read options */
 278         if (read_options() == 0)
 279         {
 280                 PERROR("%s", options_error);
 281                 goto free;
 282         }
 283
 284         /* init mISDN */
 285         if (mISDN_initialize() < 0)
 286                 goto free;
 287         created_misdn = 1;
 288         created_debug = 1;
 289
 290         /* read ruleset(s) */
 291         if (!(ruleset_first = ruleset_parse()))
 292                 goto free;
 293
 294         /* set pointer to main ruleset */
 295         ruleset_main = getrulesetbyname("main");
 296         if (!ruleset_main)
 297         {
 298                 fprintf(stderr, "\n***\n -> Missing 'main' ruleset, causing ALL calls to be disconnected.\n***\n\n");
 299                 PDEBUG(DEBUG_LOG, "Missing 'main' ruleset, causing ALL calls to be disconnected.\n");
 300                 sleep(2);
 301         }
 302
 303 #if 0
 304         /* query available isdn ports */
 305         if (!(strcasecmp(argv[1],"route")))
 306         {
 307                 ruleset_debug(ruleset_first);
 308                 ret = 0;
 309                 goto free;
 310         }
 311 #endif
 312
 313         /* do fork in special cases */
 314         if (!(strcasecmp(argv[1],"fork")))
 315         {
 316                 pid_t pid;
 317                 FILE *pidfile;
 318
 319                 /* do daemon fork */
 320                 pid = fork();
 321
 322                 if (pid < 0)
 323                 {
 324                         fprintf(stderr, "Cannot fork!\n");
 325                         goto free;
 326                 }
 327                 if (pid != 0)
 328                 {
 329                         exit(0);
 330                 }
 331                 usleep(200000);
 332                 printf("\n");
 333
 334                 /* do second fork */
 335                 pid = fork();
 336
 337                 if (pid < 0)
 338                 {
 339                         fprintf(stderr, "Cannot fork!\n");
 340                         goto free;
 341                 }
 342                 if (pid != 0)
 343                 {
 344                         printf("LCR: Starting daemon.\n");
 345                         exit(0);
 346                 }
 347                 nooutput = 1;
 348
 349                 /* write pid file */
 350                 pidfile = fopen("/var/run/lcr.pid","w");
 351                 if (pidfile)
 352                 {
 353                         fprintf(pidfile, "%d\n", getpid());
 354                         fclose(pidfile);
 355                 }
 356         } else
 357         /* if not start */
 358         if (!!strcasecmp(argv[1],"start"))
 359         {
 360                 goto usage;
 361         }
 362
 363         /* create lock and lock! */
 364         SPRINT(lock, "%s/lcr.lock", options.lock);
 365         if ((lockfd = open(lock, O_CREAT | O_WRONLY, S_IWUSR)) < 0)
 366         {
 367                 fprintf(stderr, "Cannot create lock file: %s\n", lock);
 368                 fprintf(stderr, "Check options.conf to change to path with permissions for you.\n");
 369                 goto free;
 370         }
 371         if (flock(lockfd, LOCK_EX|LOCK_NB) < 0)
 372         {
 373                 if (errno == EWOULDBLOCK)
 374                         fprintf(stderr, "LCR: Another LCR process is running. Please kill the other one.\n");
 375                 else    fprintf(stderr, "Locking process failed: errno=%d\n", errno);
 376                 goto free;
 377         }
 378         created_lock = 1;
 379
 380         /* initialize admin socket */
 381         if (admin_init())
 382         {
 383                 fprintf(stderr, "Unable to initialize admin socket.\n");
 384                 goto free;
 385         }
 386
 387         /* generate alaw / ulaw tables */
 388         generate_tables(options.law);
 389
 390         /* load tones (if requested) */
 391         if (fetch_tones() == 0)
 392         {
 393                 fprintf(stderr, "Unable to fetch tones into memory.\n");
 394                 goto free;
 395         }
 396
 397 #ifdef WITH_GSM
 398         /* handle gsm */
 399         if (options.gsm && gsm_init())
 400         {
 401                 fprintf(stderr, "GSM initialization failed.\n");
 402                 goto free;
 403         }
 404 #else
 405         if (options.gsm)
 406         {
 407                 fprintf(stderr, "GSM is enabled, but not compiled. Use --with-gsm while configure!\n");
 408                 goto free;
 409         }
 410 #endif
 411
 412         /* read interfaces and open ports */
 413         if (!read_interfaces())
 414         {
 415                 PERROR_RUNTIME("No interfaces specified or failed to parse interface.conf.\n");
 416                 fprintf(stderr, "No interfaces specified or failed to parse interface.conf.\n");
 417                 goto free;
 418         }
 419         relink_interfaces();
 420         interface_first = interface_newlist;
 421         interface_newlist = NULL;
 422
 423         /* locking memory paging */
 424         i = 0;
 425         while(i < 10)
 426         {
 427                 if (mlockall(MCL_CURRENT | MCL_FUTURE) >= 0)
 428                         break;
 429                 usleep(200000);
 430                 i++;
 431         }
 432         if (i == 10)
 433         {
 434                 switch(errno)
 435                 {
 436                         case ENOMEM:
 437                         fprintf(stderr, "Warning: Not enough memory to lock paging.\n");
 438                         break;
 439                         case EPERM:
 440                         fprintf(stderr, "Warning: No permission to lock paging.\n");
 441                         break;
 442                         case EFAULT:
 443                         fprintf(stderr, "Warning: 'Bad address' while locking paging.\n");
 444                         break;
 445                         default:
 446                         fprintf(stderr, "Warning: Unknown error %d while locking paging.\n", errno);
 447                 }
 448         }
 449
 450         /* set real time scheduler & priority */
 451         if (options.schedule > 1)
 452         {
 453                 memset(&schedp, 0, sizeof(schedp));
 454                 schedp.sched_priority = options.schedule;
 455                 ret = sched_setscheduler(0, SCHED_RR, &schedp);
 456                 if (ret < 0)
 457                 {
 458                         PERROR("Scheduling failed with given priority %d (errno = %d).\nCheck options.conf 'schedule', exitting...\n", options.schedule, errno);
 459                         goto free;
 460                 }
 461         }
 462
 463         /* signal handlers */
 464         signal(SIGINT,sighandler);
 465         signal(SIGHUP,sighandler);
 466         signal(SIGTERM,sighandler);
 467         signal(SIGPIPE,sighandler);
 468         created_signal = 1;
 469
 470         /*** main loop ***/
 471         SPRINT(tracetext, "%s %s started, waiting for calls...", NAME, VERSION_STRING);
 472         start_trace(-1, NULL, NULL, NULL, 0, 0, 0, tracetext);
 473         printf("%s\n", tracetext);
 474         end_trace();
 475         GET_NOW();
 476         quit = 0;
 477         while(!quit)
 478         {
 479
 480                 last_d = now_d;
 481                 GET_NOW();
 482                 if (now_d-last_d > 1.0)
 483                 {
 484                         PERROR("LCR was stalling %d.%d seconds\n", ((int)((now_d-last_d)*10.0))/10, (int)((now_d-last_d)*10.0));
 485                 }
 486                 /* all loops must be counted from the beginning since nodes might get freed during handler */
 487                 all_idle = 1;
 488
 489 //#warning debugging usleep crash
 490 //              debug_usleep(1, __FILE__, __LINE__, now_tm->tm_hour, now_tm->tm_min, now_tm->tm_sec);
 491
 492                 /* handle mISDN messages from kernel */
 493                 debug_prefix = "ISDN";
 494                 if (mISDN_handler())
 495                         all_idle = 0;
 496 //#warning debugging usleep crash
 497 //              debug_usleep(1, __FILE__, __LINE__, now_tm->tm_hour, now_tm->tm_min, now_tm->tm_sec);
 498
 499 BUDETECT
 500
 501                 /* loop through all port ports and call their handler */
 502                 port_again:
 503                 port = port_first;
 504                 while(port)
 505                 {
 506                         debug_prefix = port->p_name;
 507                         debug_count++;
 508                         ret = port->handler();
 509                         if (ret)
 510                                 all_idle = 0;
 511                         if (ret < 0) /* port has been destroyed */
 512                                 goto port_again;
 513                         port = port->next;
 514                 }
 515
 516                 /* loop through all epoint and call their handler */
 517                 epoint_again:
 518                 epoint = epoint_first;
 519                 while(epoint)
 520                 {
 521                         debug_prefix = prefix_string;
 522                         SPRINT(prefix_string, "ep%ld", epoint->ep_serial);
 523                         debug_count++;
 524                         ret = epoint->handler();
 525                         if (ret)
 526                                 all_idle = 0;
 527                         if (ret < 0) /* epoint has been destroyed */
 528                                 goto epoint_again;
 529                         epoint = epoint->next;
 530                 }
 531
 532                 /* loop through all joins and call their handler */
 533                 join_again:
 534                 join = join_first;
 535                 while(join)
 536                 {
 537                         debug_prefix = "join";
 538                         debug_count++;
 539                         ret = join->handler();
 540                         if (ret)
 541                                 all_idle = 0;
 542                         if (ret < 0) /* join has been destroyed */
 543                                 goto join_again;
 544                         join = join->next;
 545                 }
 546
 547                 debug_prefix = 0;
 548
 549                 /* process any message */
 550                 debug_count++;
 551                 debug_prefix = "message";
 552                 while ((message = message_get()))
 553                 {
 554                         all_idle = 0;
 555                         switch(message->flow)
 556                         {
 557                                 case PORT_TO_EPOINT:
 558                                 debug_prefix = "msg port->epoint";
 559                                 epoint = find_epoint_id(message->id_to);
 560                                 if (epoint)
 561                                 {
 562                                         if (epoint->ep_app)
 563                                         {
 564                                                 epoint->ep_app->ea_message_port(message->id_from, message->type, &message->param);
 565                                         } else
 566                                         {
 567                                                 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);
 568                                         }
 569                                 } else
 570                                 {
 571                                         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);
 572                                 }
 573                                 break;
 574
 575                                 case EPOINT_TO_JOIN:
 576                                 debug_prefix = "msg epoint->join";
 577                                 join = find_join_id(message->id_to);
 578                                 if (join)
 579                                 {
 580                                         join->message_epoint(message->id_from, message->type, &message->param);
 581                                 } else
 582                                 {
 583                                         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);
 584                                 }
 585                                 break;
 586
 587                                 case JOIN_TO_EPOINT:
 588                                 debug_prefix = "msg join->epoint";
 589                                 epoint = find_epoint_id(message->id_to);
 590                                 if (epoint)
 591                                 {
 592                                         if (epoint->ep_app)
 593                                         {
 594                                                 epoint->ep_app->ea_message_join(message->id_from, message->type, &message->param);
 595                                         } else
 596                                         {
 597                                                 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);
 598                                         }
 599                                 } else
 600                                 {
 601                                         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);
 602                                 }
 603                                 break;
 604
 605                                 case EPOINT_TO_PORT:
 606                                 debug_prefix = "msg epoint->port";
 607                                 port = find_port_id(message->id_to);
 608                                 if (port)
 609                                 {
 610                                         port->message_epoint(message->id_from, message->type, &message->param);
 611 BUDETECT
 612                                 } else
 613                                 {
 614                                         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);
 615                                 }
 616                                 break;
 617
 618                                 default:
 619                                 PERROR("Message flow %d unknown.\n", message->flow);
 620                         }
 621                         message_free(message);
 622                         debug_count++;
 623                         debug_prefix = "message";
 624                 }
 625 BUDETECT
 626
 627                 /* handle socket */
 628                 if (admin_handle())
 629                         all_idle = 0;
 630 BUDETECT
 631
 632 #ifdef WITH_GSM
 633                 /* handle gsm */
 634                 if (options.gsm)
 635                         while(handle_gsm())
 636                                 all_idle = 0;
 637 #endif
 638
 639 BUDETECT
 640
 641 #if 0
 642                 /* check for child to exit (eliminate zombies) */
 643                 if (waitpid(-1, NULL, WNOHANG) > 0)
 644                 {
 645                         PDEBUG(DEBUG_EPOINT, "a child process (created by endpoint) has exitted.\n");
 646                         all_idle = 0;
 647                 }
 648 #endif
 649 //#warning debugging usleep crash
 650 //              debug_usleep(1, __FILE__, __LINE__, now_tm->tm_hour, now_tm->tm_min, now_tm->tm_sec);
 651
 652                 /* do idle checking */
 653                 if (idlecheck != now)
 654                 {
 655                         PDEBUG(DEBUG_IDLETIME, "Idle time : %d%%\n", idletime/10000);
 656                         idletime = 0;
 657                         idlecheck = now;
 658                 }
 659
 660                 /* did we do nothing? so we wait to give time to other processes */
 661                 if (all_idle)
 662                 {
 663 //                      pthread_mutex_unlock(&mutex_lcr); // unlock LCR
 664                         debug_usleep(4000, __FILE__, __LINE__, now_tm->tm_hour, now_tm->tm_min, now_tm->tm_sec);
 665 //                      pthread_mutex_lock(&mutex_lcr); // lock LCR
 666                         idletime += 4000;
 667                 }
 668         }
 669         SPRINT(tracetext, "%s terminated", NAME);
 670         printf("%s\n", tracetext);
 671         start_trace(-1, NULL, NULL, NULL, 0, 0, 0, tracetext);
 672         if (quit)
 673                 add_trace((char *)"signal", NULL, "%d", quit);
 674         end_trace();
 675         ret=0;
 676
 677         /* free all */
 678 free:
 679
 680
 681         /* set scheduler & priority
 682          */
 683         if (options.schedule > 1)
 684         {
 685                 memset(&schedp, 0, sizeof(schedp));
 686                 schedp.sched_priority = options.schedule;
 687                 sched_setscheduler(0, SCHED_OTHER, &schedp);
 688         }
 689         /* reset signals */
 690         if (created_signal)
 691         {
 692                 signal(SIGINT,SIG_DFL);
 693                 signal(SIGHUP,SIG_DFL);
 694                 signal(SIGTERM,SIG_DFL);
 695                 signal(SIGPIPE,SIG_DFL);
 696         }
 697
 698         /* destroy objects */
 699         debug_prefix = "free";
 700
 701         while(port_first)
 702         {
 703                 debug_count++;
 704                 delete port_first;
 705         }
 706         while(epoint_first)
 707         {
 708                 debug_count++;
 709                 delete epoint_first;
 710         }
 711         epoint_first = NULL;
 712         debug_count++;
 713         join_free();
 714
 715         /* free interfaces */
 716         if (interface_first)
 717                 free_interfaces(interface_first);
 718         interface_first = NULL;
 719
 720         /* close isdn ports */
 721         mISDNport_close_all();
 722
 723         /* flush messages */
 724         debug_count++;
 725         i = 0;
 726         while ((message = message_get()))
 727         {
 728                 i++;
 729                 message_free(message);
 730         }
 731         if (i)
 732         {
 733                 PDEBUG(DEBUG_MSG, "freed %d pending messages\n", i);
 734         }
 735
 736         /* free tones */
 737         if (toneset_first)
 738                 free_tones();
 739
 740         /* free admin socket */
 741         admin_cleanup();
 742
 743         /* close lock */
 744         if (created_lock)
 745                 flock(lockfd, LOCK_UN);
 746         if (lockfd >= 0)
 747         {
 748                 chmod(lock, 0700);
 749                 unlink(lock);
 750                 close(lockfd);
 751         }
 752
 753         /* free rulesets */
 754         if (ruleset_first)
 755                 ruleset_free(ruleset_first);
 756         ruleset_first = NULL;
 757
 758         /* free mutex */
 759         if (created_mutexe)
 760                 if (pthread_mutex_destroy(&mutexe))
 761                         fprintf(stderr, "cannot destroy 'PERROR' mutex\n");
 762 //      if (created_mutext)
 763 //              if (pthread_mutex_destroy(&mutext))
 764 //                      fprintf(stderr, "cannot destroy 'trace' mutex\n");
 765         if (created_mutexd)
 766                 if (pthread_mutex_destroy(&mutexd))
 767                         fprintf(stderr, "cannot destroy 'PDEBUG' mutex\n");
 768
 769         /* deinitialize mISDN */
 770         if (created_misdn)
 771                 mISDN_deinitialize();
 772
 773 #ifdef WITH_GSM
 774         /* free gsm */
 775         if (options.gsm)
 776                 gsm_exit(0);
 777 #endif
 778
 779         /* display memory leak */
 780 #define MEMCHECK(a, b) \
 781         if (b) \
 782         { \
 783                 SPRINT(tracetext, a, NAME); \
 784                 start_trace(-1, NULL, NULL, NULL, 0, 0, 0, tracetext); \
 785                 if (ret) add_trace("blocks", NULL, "%d", b); \
 786                 end_trace(); \
 787                 printf("\n******************************\n\007"); \
 788                 printf("\nERROR: %d %s\n", b, a); \
 789                 printf("\n******************************\n"); \
 790                 ret = -1; \
 791         }
 792         MEMCHECK("",memuse)
 793         MEMCHECK("memory block(s) left (port.cpp ...)",pmemuse)
 794         MEMCHECK("memory block(s) left (epoint*.cpp ...)",ememuse)
 795         MEMCHECK("memory block(s) left (join*.cpp)",cmemuse)
 796         MEMCHECK("memory block(s) left (message.c)",mmemuse)
 797         MEMCHECK("memory block(s) left (route.c)",rmemuse)
 798         MEMCHECK("memory block(s) left (args)",amemuse)
 799         MEMCHECK("class(es) left",classuse)
 800         MEMCHECK("file descriptor(s) left",fduse)
 801         MEMCHECK("file handler(s) left",fhuse)
 802
 803         /* unlock LCR process */
 804 //      pthread_mutex_unlock(&mutex_lcr);
 805
 806         /* take me out */
 807         return(ret);
 808 }
 809
 810
 811 #ifdef BUDETECT_DEF
 812 /* special debug function to detect buffer overflow
 813  */
 814 int budetect_stop = 0;
 815 void budetect(const char *file, int line, const char *function)
 816 {
 817         if (budetect_stop)
 818                 return;
 819         /* modify this function to detect race-bugs */
 820 #warning DID YOU MODIFY THIS FUNCTION TO DETECT THE BUFFER OVERFLOW BUG?
 821         class Port *port;
 822         class PmISDN *pmisdn;
 823         struct mISDNport *mISDNport = mISDNport_first;
 824         int i, ii;
 825
 826         while(mISDNport)
 827         {
 828                 i = 0;
 829                 ii = mISDNport->b_num;
 830                 while(i < ii)
 831                 {
 832                         if (mISDNport->b_port[i])
 833                         {
 834                                 port = port_first;
 835                                 while(port)
 836                                 {
 837                                         if ((port->p_type&PORT_CLASS_MASK) == PORT_CLASS_ISDN)
 838                                         {
 839                                                 pmisdn = (class PmISDN *)port;
 840                                                 if (pmisdn->p_isdn_crypt_listen)
 841                                                 {
 842                                                         PERROR_RUNTIME("************************************************\n");
 843                                                         PERROR_RUNTIME("** BUG detected in %s, line %d, function %s\n", file, line, function);
 844                                                         PERROR_RUNTIME("** p_isdn_crypt_listen = %d\n", pmisdn->p_isdn_crypt_listen);
 845                                                         PERROR_RUNTIME("************************************************\n");
 846                                                         budetect_stop = 1;
 847                                                 }
 848                                         }
 849                                         if (port == mISDNport->b_port[i])
 850                                                 break;
 851                                         port = port->next;
 852                                         if (!port)
 853                                         {
 854                                                 PERROR_RUNTIME("************************************************\n");
 855                                                 PERROR_RUNTIME("** BUG detected in %s, line %d, function %s\n", file, line, function);
 856                                                 PERROR_RUNTIME("** b_port not in list.\n");
 857                                                 PERROR_RUNTIME("************************************************\n");
 858                                                 budetect_stop = 1;
 859                                         }
 860                                 }
 861                         }
 862                         i++;
 863                 }
 864                 mISDNport = mISDNport->next;
 865         }
 866
 867 }
 868 #endif
 869