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