main.c

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