main.c

   1 /*****************************************************************************\
   2 **                                                                           **
   3 ** Linux Call Router                                                         **
   4 **                                                                           **
   5 **---------------------------------------------------------------------------**
   6 ** Copyright: Andreas Eversberg                                              **
   7 **                                                                           **
   8 ** Main function                                                             **
   9 **                                                                           **
  10 \*****************************************************************************/
  11
  12 #include "main.h"
  13
  14 MESSAGES
  15
  16 double now_d, last_d;
  17 time_t now;
  18 struct tm *now_tm;
  19 struct timeval now_tv;
  20 struct timezone now_tz;
  21 #define GET_NOW() \
  22         { \
  23                 gettimeofday(&now_tv, &now_tz); \
  24                 now_d = ((double)(now_tv.tv_usec))/1000000 + now_tv.tv_sec; \
  25                 now = now_tv.tv_sec; \
  26                 now_tm = localtime(&now); \
  27         }
  28
  29 FILE *debug_fp = NULL;
  30 int quit=0;
  31
  32 #if 0
  33 struct lcr_fdset lcr_fdset[FD_SETSIZE];
  34 #endif
  35
  36 pthread_mutex_t mutexd; // debug output mutex
  37 pthread_mutex_t mutext; // trace output mutex
  38 pthread_mutex_t mutexe; // error output mutex
  39 //pthread_mutex_t mutex_lcr; // lcr process mutex
  40
  41 int memuse = 0;
  42 int mmemuse = 0;
  43 int cmemuse = 0;
  44 int ememuse = 0;
  45 int pmemuse = 0;
  46 int amemuse = 0;
  47 int rmemuse = 0;
  48 int classuse = 0;
  49 int fduse = 0;
  50 int fhuse = 0;
  51
  52 char *debug_prefix = 0;
  53 int debug_count = 0;
  54 int last_debug = 0;
  55 int debug_newline = 1;
  56 int nooutput = 0;
  57
  58 void debug_usleep(int msec, char *file, int line, int hour, int min, int sec)
  59 {
  60         usleep(msec);
  61 }
  62
  63 void debug(const char *function, int line, char *prefix, char *buffer)
  64 {
  65         /* if we have a new debug count, we add a mark */
  66         if (last_debug != debug_count)
  67         {
  68                 last_debug = debug_count;
  69                 if (!nooutput)
  70                         printf("\033[34m--------------------- %04d.%02d.%02d %02d:%02d:%02d %06d\033[36m\n", now_tm->tm_year+1900, now_tm->tm_mon+1, now_tm->tm_mday, now_tm->tm_hour, now_tm->tm_min, now_tm->tm_sec, debug_count%1000000);
  71                 if (debug_fp)
  72                         fprintf(debug_fp, "--------------------- %04d.%02d.%02d %02d:%02d:%02d %06d\n", now_tm->tm_year+1900, now_tm->tm_mon+1, now_tm->tm_mday, now_tm->tm_hour, now_tm->tm_min, now_tm->tm_sec, debug_count%1000000);
  73         }
  74
  75         if (!nooutput)
  76         {
  77                 if (debug_newline)
  78                         printf("\033[32m%06d %s\033[37m%s", debug_count%1000000, prefix?prefix:"", prefix?" ":"");
  79                 if (function)
  80                         printf("(in %s() line %d): %s", function, line, buffer);
  81                 else
  82                         printf("%s", buffer);
  83         }
  84
  85         if (debug_fp)
  86         {
  87                 if (debug_newline)
  88                 {
  89                         if (function)
  90                                 fprintf(debug_fp, "%s%s(in %s() line %d): %s", prefix?prefix:"", prefix?" ":"", function, line, buffer);
  91                         else
  92                                 fprintf(debug_fp, "%s%s: %s", prefix?prefix:"", prefix?" ":"", buffer);
  93                 }
  94         }
  95
  96         debug_newline = 0;
  97         if (buffer[0])
  98                 if (buffer[strlen(buffer)-1] == '\n')
  99                         debug_newline = 1;
 100 }
 101
 102
 103 void _printdebug(const char *function, int line, unsigned int mask, const char *fmt, ...)
 104 {
 105         char buffer[4096];
 106         va_list args;
 107
 108         if (!(options.deb & mask))
 109                 return;
 110         pthread_mutex_lock(&mutexd);
 111
 112         va_start(args,fmt);
 113         VUNPRINT(buffer,sizeof(buffer)-1,fmt,args);
 114         buffer[sizeof(buffer)-1]=0;
 115         va_end(args);
 116
 117         debug(function, line, debug_prefix, buffer);
 118
 119         pthread_mutex_unlock(&mutexd);
 120 }
 121
 122 void _printerror(const char *function, int line, const char *fmt, ...)
 123 {
 124         char buffer[4096];
 125         va_list args;
 126
 127         pthread_mutex_lock(&mutexe);
 128
 129         va_start(args,fmt);
 130         VUNPRINT(buffer,sizeof(buffer)-1,fmt,args);
 131         buffer[sizeof(buffer)-1]=0;
 132         va_end(args);
 133
 134         if (options.deb)
 135                 debug(function, line, "ERROR", buffer);
 136         else /* only if we do not debug */
 137         {
 138                 if (function)
 139                         fprintf(stderr, "ERROR (in %s() line %d) %s", function, line, buffer);
 140                 else
 141                         fprintf(stderr, "ERROR %s", buffer);
 142         }
 143
 144         pthread_mutex_unlock(&mutexe);
 145 }
 146
 147
 148 void sighandler(int sigset)
 149 {
 150         struct sched_param schedp;
 151
 152         if (sigset == SIGHUP)
 153                 return;
 154         if (sigset == SIGPIPE)
 155                 return;
 156         if (!quit)
 157         {
 158                 quit = sigset;
 159                 /* set scheduler & priority */
 160                 if (options.schedule > 1)
 161                 {
 162                         memset(&schedp, 0, sizeof(schedp));
 163                         schedp.sched_priority = 0;
 164                         sched_setscheduler(0, SCHED_OTHER, &schedp);
 165                 }
 166                 fprintf(stderr, "LCR: Signal received: %d\n", sigset);
 167                 PDEBUG(DEBUG_LOG, "Signal received: %d\n", sigset);
 168         }
 169 }
 170
 171
 172 /*
 173  * the main
 174  */
 175 int main(int argc, char *argv[])
 176 {
 177         int                     ret = -1;
 178         int                     lockfd = -1; /* file lock */
 179         struct lcr_msg          *message;
 180         class Port              *port;
 181         class Endpoint          *epoint;
 182         class Join              *join;
 183         int                     i;
 184         int                     all_idle;
 185         char                    prefix_string[64];
 186         struct sched_param      schedp;
 187         char                    *debug_prefix = "alloc";
 188         int                     created_mutexd = 0,/* created_mutext = 0,*/ created_mutexe = 0,
 189                                 created_lock = 0, created_signal = 0, created_debug = 0,
 190                                 created_misdn = 0;
 191         int                     idletime = 0, idlecheck = 0;
 192         char                    tracetext[256];
 193
 194 #if 0
 195         /* init fdset */
 196         memset(lcr_fdset, 0, sizeof(lcr_fdset));
 197 #endif
 198
 199         /* lock LCR process */
 200 //      pthread_mutex_lock(&mutex_lcr);
 201
 202         /* current time */
 203         GET_NOW();
 204
 205         /* show version */
 206         printf("\n** %s  Version %s\n\n", NAME, VERSION_STRING);
 207
 208         /* show options */
 209         if (argc <= 1)
 210         {
 211                 usage:
 212                 printf("\n");
 213                 printf("Usage: lcr (query | start | fork | rules | route)\n");
 214                 printf("query     = Show available isdn ports.\n");
 215                 printf("start     = Run lcr normally, abort with CTRL+C.\n");
 216                 printf("fork      = Do daemon fork and run as background process.\n");
 217                 printf("interface = Get help of available interface syntax.\n");
 218                 printf("rules     = Get help of available routing rule syntax.\n");
 219                 printf("rules [action] = Get individual help for given action.\n");
 220 //              printf("route = Show current routing as it is parsed.\n");
 221                 printf("\n");
 222                 ret = 999;
 223                 goto free;
 224         }
 225
 226         /* init crc */
 227         crc_init();
 228
 229         /* 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 'isdninfo'\n");
 272                 system("isdninfo");
 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
 318                 /* do daemon fork */
 319                 pid = fork();
 320
 321                 if (pid < 0)
 322                 {
 323                         fprintf(stderr, "Cannot fork!\n");
 324                         goto free;
 325                 }
 326                 if (pid != 0)
 327                 {
 328                         exit(0);
 329                 }
 330                 usleep(200000);
 331                 printf("\n");
 332
 333                 /* do second fork */
 334                 pid = fork();
 335
 336                 if (pid < 0)
 337                 {
 338                         fprintf(stderr, "Cannot fork!\n");
 339                         goto free;
 340                 }
 341                 if (pid != 0)
 342                 {
 343                         printf("LCR: Starting daemon.\n");
 344                         exit(0);
 345                 }
 346                 nooutput = 1;
 347         } else
 348         /* if not start */
 349         if (!!strcasecmp(argv[1],"start"))
 350         {
 351                 goto usage;
 352         }
 353
 354         /* create lock and lock! */
 355         if ((lockfd = open("/var/run/lcr.lock", O_CREAT, 0)) < 0)
 356         {
 357                 fprintf(stderr, "Cannot create lock file: /var/run/lcr.lock\n");
 358                 goto free;
 359         }
 360         if (flock(lockfd, LOCK_EX|LOCK_NB) < 0)
 361         {
 362                 if (errno == EWOULDBLOCK)
 363                         fprintf(stderr, "LCR: Another LCR process is running. Please kill the other one.\n");
 364                 else    fprintf(stderr, "Locking process failed: errno=%d\n", errno);
 365                 goto free;
 366         }
 367         created_lock = 1;
 368
 369         /* initialize admin socket */
 370         if (admin_init())
 371         {
 372                 fprintf(stderr, "Unable to initialize admin socket.\n");
 373                 goto free;
 374         }
 375
 376         /* generate alaw / ulaw tables */
 377         generate_tables(options.law);
 378
 379         /* load tones (if requested) */
 380         if (fetch_tones() == 0)
 381         {
 382                 fprintf(stderr, "Unable to fetch tones into memory.\n");
 383                 goto free;
 384         }
 385
 386         /* read interfaces and open ports */
 387         if (!read_interfaces())
 388         {
 389                 PERROR_RUNTIME("No interfaces specified or failed to parse interface.conf.\n");
 390                 fprintf(stderr, "No interfaces specified or failed to parse interface.conf.\n");
 391                 goto free;
 392         }
 393         relink_interfaces();
 394         interface_first = interface_newlist;
 395         interface_newlist = NULL;
 396
 397         /* locking memory paging */
 398         i = 0;
 399         while(i < 10)
 400         {
 401                 if (mlockall(MCL_CURRENT | MCL_FUTURE) >= 0)
 402                         break;
 403                 usleep(200000);
 404                 i++;
 405         }
 406         if (i == 10)
 407         {
 408                 switch(errno)
 409                 {
 410                         case ENOMEM:
 411                         fprintf(stderr, "Not enough memory to lock paging, exitting...\n");
 412                         break;
 413                         case EPERM:
 414                         fprintf(stderr, "No permission to lock paging, exitting...\n");
 415                         break;
 416                         case EFAULT:
 417                         fprintf(stderr, "'Bad address' while locking paging, exitting...\n");
 418                         break;
 419                         default:
 420                         fprintf(stderr, "Unknown error %d while locking paging, exitting...\n", errno);
 421                 }
 422                 goto free;
 423         }
 424
 425         /* set real time scheduler & priority */
 426         if (options.schedule > 1)
 427         {
 428                 memset(&schedp, 0, sizeof(schedp));
 429                 schedp.sched_priority = options.schedule;
 430                 ret = sched_setscheduler(0, SCHED_RR, &schedp);
 431                 if (ret < 0)
 432                 {
 433                         PERROR("Scheduling failed with given priority %d (errno = %d).\nCheck options.conf 'schedule', exitting...\n", options.schedule, errno);
 434                         goto free;
 435                 }
 436         }
 437
 438         /* signal handlers */
 439         signal(SIGINT,sighandler);
 440         signal(SIGHUP,sighandler);
 441         signal(SIGTERM,sighandler);
 442         signal(SIGPIPE,sighandler);
 443         created_signal = 1;
 444
 445         /*** main loop ***/
 446         SPRINT(tracetext, "%s %s started, waiting for calls...", NAME, VERSION_STRING);
 447         start_trace(0, NULL, NULL, NULL, 0, 0, 0, tracetext);
 448         printf("%s\n", tracetext);
 449         end_trace();
 450         GET_NOW();
 451         quit = 0;
 452         while(!quit)
 453         {
 454
 455                 last_d = now_d;
 456                 GET_NOW();
 457                 if (now_d-last_d > 1.0)
 458                 {
 459                         PERROR("LCR was stalling %d.%d seconds\n", ((int)((now_d-last_d)*10.0))/10, (int)((now_d-last_d)*10.0));
 460                 }
 461                 /* all loops must be counted from the beginning since nodes might get freed during handler */
 462                 all_idle = 1;
 463
 464 //#warning debugging usleep crash
 465 //              debug_usleep(1, __FILE__, __LINE__, now_tm->tm_hour, now_tm->tm_min, now_tm->tm_sec);
 466
 467                 /* handle mISDN messages from kernel */
 468                 debug_prefix = "ISDN";
 469                 if (mISDN_handler())
 470                         all_idle = 0;
 471 //#warning debugging usleep crash
 472 //              debug_usleep(1, __FILE__, __LINE__, now_tm->tm_hour, now_tm->tm_min, now_tm->tm_sec);
 473
 474 BUDETECT
 475
 476                 /* loop through all port ports and call their handler */
 477                 port_again:
 478                 port = port_first;
 479                 while(port)
 480                 {
 481                         debug_prefix = port->p_name;
 482                         debug_count++;
 483                         ret = port->handler();
 484                         if (ret)
 485                                 all_idle = 0;
 486                         if (ret < 0) /* port has been destroyed */
 487                                 goto port_again;
 488                         port = port->next;
 489                 }
 490
 491                 /* loop through all epoint and call their handler */
 492                 epoint_again:
 493                 epoint = epoint_first;
 494                 while(epoint)
 495                 {
 496                         debug_prefix = prefix_string;
 497                         SPRINT(prefix_string, "ep%ld", epoint->ep_serial);
 498                         debug_count++;
 499                         ret = epoint->handler();
 500                         if (ret)
 501                                 all_idle = 0;
 502                         if (ret < 0) /* epoint has been destroyed */
 503                                 goto epoint_again;
 504                         epoint = epoint->next;
 505                 }
 506
 507                 /* loop through all joins and call their handler */
 508                 join_again:
 509                 join = join_first;
 510                 while(join)
 511                 {
 512                         debug_prefix = "join";
 513                         debug_count++;
 514                         ret = join->handler();
 515                         if (ret)
 516                                 all_idle = 0;
 517                         if (ret < 0) /* join has been destroyed */
 518                                 goto join_again;
 519                         join = join->next;
 520                 }
 521
 522                 debug_prefix = 0;
 523
 524                 /* process any message */
 525                 debug_count++;
 526                 debug_prefix = "message";
 527                 while ((message = message_get()))
 528                 {
 529                         all_idle = 0;
 530                         switch(message->flow)
 531                         {
 532                                 case PORT_TO_EPOINT:
 533                                 debug_prefix = "msg port->epoint";
 534                                 epoint = find_epoint_id(message->id_to);
 535                                 if (epoint)
 536                                 {
 537                                         if (epoint->ep_app)
 538                                         {
 539                                                 epoint->ep_app->ea_message_port(message->id_from, message->type, &message->param);
 540                                         } else
 541                                         {
 542                                                 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);
 543                                         }
 544                                 } else
 545                                 {
 546                                         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);
 547                                 }
 548                                 break;
 549
 550                                 case EPOINT_TO_JOIN:
 551                                 debug_prefix = "msg epoint->join";
 552                                 join = find_join_id(message->id_to);
 553                                 if (join)
 554                                 {
 555                                         join->message_epoint(message->id_from, message->type, &message->param);
 556                                 } else
 557                                 {
 558                                         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);
 559                                 }
 560                                 break;
 561
 562                                 case JOIN_TO_EPOINT:
 563                                 debug_prefix = "msg join->epoint";
 564                                 epoint = find_epoint_id(message->id_to);
 565                                 if (epoint)
 566                                 {
 567                                         if (epoint->ep_app)
 568                                         {
 569                                                 epoint->ep_app->ea_message_join(message->id_from, message->type, &message->param);
 570                                         } else
 571                                         {
 572                                                 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);
 573                                         }
 574                                 } else
 575                                 {
 576                                         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);
 577                                 }
 578                                 break;
 579
 580                                 case EPOINT_TO_PORT:
 581                                 debug_prefix = "msg epoint->port";
 582                                 port = find_port_id(message->id_to);
 583                                 if (port)
 584                                 {
 585                                         port->message_epoint(message->id_from, message->type, &message->param);
 586 BUDETECT
 587                                 } else
 588                                 {
 589                                         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);
 590                                 }
 591                                 break;
 592
 593                                 default:
 594                                 PERROR("Message flow %d unknown.\n", message->flow);
 595                         }
 596                         message_free(message);
 597                         debug_count++;
 598                         debug_prefix = "message";
 599                 }
 600 BUDETECT
 601
 602                 /* handle socket */
 603                 if (admin_handle())
 604                         all_idle = 0;
 605 BUDETECT
 606
 607 #if 0
 608                 /* check for child to exit (eliminate zombies) */
 609                 if (waitpid(-1, NULL, WNOHANG) > 0)
 610                 {
 611                         PDEBUG(DEBUG_EPOINT, "a child process (created by endpoint) has exitted.\n");
 612                         all_idle = 0;
 613                 }
 614 #endif
 615 //#warning debugging usleep crash
 616 //              debug_usleep(1, __FILE__, __LINE__, now_tm->tm_hour, now_tm->tm_min, now_tm->tm_sec);
 617
 618                 /* do idle checking */
 619                 if (idlecheck != now)
 620                 {
 621                         PDEBUG(DEBUG_IDLETIME, "Idle time : %d%%\n", idletime/10000);
 622                         idletime = 0;
 623                         idlecheck = now;
 624                 }
 625
 626                 /* did we do nothing? so we wait to give time to other processes */
 627                 if (all_idle)
 628                 {
 629 //                      pthread_mutex_unlock(&mutex_lcr); // unlock LCR
 630                         debug_usleep(4000, __FILE__, __LINE__, now_tm->tm_hour, now_tm->tm_min, now_tm->tm_sec);
 631 //                      pthread_mutex_lock(&mutex_lcr); // lock LCR
 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 (quit)
 639                 add_trace("signal", NULL, "%d", quit);
 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 = options.schedule;
 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         if (created_misdn)
 733                 mISDN_deinitialize();
 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         /* unlock LCR process */
 760 //      pthread_mutex_unlock(&mutex_lcr);
 761
 762         /* take me out */
 763         return(ret);
 764 }
 765
 766
 767 #ifdef BUDETECT_DEF
 768 /* special debug function to detect buffer overflow
 769  */
 770 int budetect_stop = 0;
 771 void budetect(const char *file, int line, char *function)
 772 {
 773         if (budetect_stop)
 774                 return;
 775         /* modify this function to detect race-bugs */
 776 #warning DID YOU MODIFY THIS FUNCTION TO DETECT THE BUFFER OVERFLOW BUG?
 777         class Port *port;
 778         class PmISDN *pmisdn;
 779         struct mISDNport *mISDNport = mISDNport_first;
 780         int i, ii;
 781
 782         while(mISDNport)
 783         {
 784                 i = 0;
 785                 ii = mISDNport->b_num;
 786                 while(i < ii)
 787                 {
 788                         if (mISDNport->b_port[i])
 789                         {
 790                                 port = port_first;
 791                                 while(port)
 792                                 {
 793                                         if ((port->p_type&PORT_CLASS_MASK) == PORT_CLASS_ISDN)
 794                                         {
 795                                                 pmisdn = (class PmISDN *)port;
 796                                                 if (pmisdn->p_isdn_crypt_listen)
 797                                                 {
 798                                                         PERROR_RUNTIME("************************************************\n");
 799                                                         PERROR_RUNTIME("** BUG detected in %s, line %d, function %s\n", file, line, function);
 800                                                         PERROR_RUNTIME("** p_isdn_crypt_listen = %d\n", pmisdn->p_isdn_crypt_listen);
 801                                                         PERROR_RUNTIME("************************************************\n");
 802                                                         budetect_stop = 1;
 803                                                 }
 804                                         }
 805                                         if (port == mISDNport->b_port[i])
 806                                                 break;
 807                                         port = port->next;
 808                                         if (!port)
 809                                         {
 810                                                 PERROR_RUNTIME("************************************************\n");
 811                                                 PERROR_RUNTIME("** BUG detected in %s, line %d, function %s\n", file, line, function);
 812                                                 PERROR_RUNTIME("** b_port not in list.\n");
 813                                                 PERROR_RUNTIME("************************************************\n");
 814                                                 budetect_stop = 1;
 815                                         }
 816                                 }
 817                         }
 818                         i++;
 819                 }
 820                 mISDNport = mISDNport->next;
 821         }
 822
 823 }
 824 #endif
 825