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;
  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 //#define DEBUG_DURATION
  44
  45 int global_debug = 0;
  46 int quit=0;
  47
  48 pthread_mutex_t mutexd; // debug output mutex
  49 //pthread_mutex_t mutext; // trace output mutex
  50 pthread_mutex_t mutexe; // error output mutex
  51
  52 int memuse = 0;
  53 int mmemuse = 0;
  54 int cmemuse = 0;
  55 int ememuse = 0;
  56 int pmemuse = 0;
  57 int amemuse = 0;
  58 int rmemuse = 0;
  59 int classuse = 0;
  60 int fduse = 0;
  61 int fhuse = 0;
  62
  63 char *debug_prefix = 0;
  64 int debug_count = 0;
  65 int last_debug = 0;
  66 int debug_newline = 1;
  67 int nooutput = 0;
  68
  69 void debug(const char *function, int line, char *prefix, char *buffer)
  70 {
  71         /* if we have a new debug count, we add a mark */
  72         if (last_debug != debug_count)
  73         {
  74                 last_debug = debug_count;
  75                 if (!nooutput)
  76                         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);
  77                 if (options.deb&DEBUG_LOG && global_debug)
  78                         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);
  79         }
  80
  81         if (!nooutput)
  82         {
  83                 if (debug_newline)
  84                         printf("\033[32m%06d %s\033[37m%s", debug_count%1000000, prefix?prefix:"", prefix?" ":"");
  85                 if (function)
  86                         printf("(in %s() line %d): %s", function, line, buffer);
  87                 else
  88                         printf("%s", buffer);
  89         }
  90
  91         if (options.deb&DEBUG_LOG && global_debug)
  92         {
  93                 if (debug_newline)
  94                 {
  95                         if (function)
  96                                 dprint(DBGM_MAN, 0, "%s%s(in %s() line %d): %s", prefix?prefix:"", prefix?" ":"", function, line, buffer);
  97                         else
  98                                 dprint(DBGM_MAN, 0, "%s%s: %s", prefix?prefix:"", prefix?" ":"", buffer);
  99                 }
 100         }
 101
 102         debug_newline = 0;
 103         if (buffer[0])
 104                 if (buffer[strlen(buffer)-1] == '\n')
 105                         debug_newline = 1;
 106 }
 107
 108
 109 void _printdebug(const char *function, int line, unsigned long mask, const char *fmt, ...)
 110 {
 111         char buffer[4096];
 112         va_list args;
 113
 114         if (!(options.deb & mask))
 115                 return;
 116         pthread_mutex_lock(&mutexd);
 117
 118         va_start(args,fmt);
 119         VUNPRINT(buffer,sizeof(buffer)-1,fmt,args);
 120         buffer[sizeof(buffer)-1]=0;
 121         va_end(args);
 122
 123         debug(function, line, debug_prefix, buffer);
 124
 125         pthread_mutex_unlock(&mutexd);
 126 }
 127
 128 void _printerror(const char *function, int line, const char *fmt, ...)
 129 {
 130         char buffer[4096];
 131         va_list args;
 132
 133         pthread_mutex_lock(&mutexe);
 134
 135         va_start(args,fmt);
 136         VUNPRINT(buffer,sizeof(buffer)-1,fmt,args);
 137         buffer[sizeof(buffer)-1]=0;
 138         va_end(args);
 139
 140         if (options.deb)
 141                 debug(function, line, "ERROR", buffer);
 142         else /* only if we do not debug */
 143         {
 144                 if (function)
 145                         fprintf(stderr, "ERROR (in %s() line %d) %s", function, line, buffer);
 146                 else
 147                         fprintf(stderr, "ERROR %s", buffer);
 148         }
 149
 150         pthread_mutex_unlock(&mutexe);
 151 }
 152
 153
 154 void sighandler(int sigset)
 155 {
 156         struct sched_param schedp;
 157
 158         if (sigset == SIGHUP)
 159                 return;
 160         if (sigset == SIGPIPE)
 161                 return;
 162         if (!quit)
 163         {
 164                 quit=1;
 165                 /* set scheduler & priority */
 166                 if (options.schedule > 1)
 167                 {
 168                         memset(&schedp, 0, sizeof(schedp));
 169                         schedp.sched_priority = 0;
 170                         sched_setscheduler(0, SCHED_OTHER, &schedp);
 171                 }
 172                 fprintf(stderr, "LCR: Signal received: %d\n", sigset);
 173                 PERROR("Signal received: %d\n", sigset);
 174         }
 175 }
 176
 177
 178 /*
 179  * the main
 180  */
 181 int main(int argc, char *argv[])
 182 {
 183         int                     ret = -1;
 184         int                     lockfd = -1; /* file lock */
 185         struct message          *message;
 186         class Port              *port;
 187         class Endpoint          *epoint;
 188         class Join              *join;
 189         int                     i;
 190         int                     all_idle;
 191         char                    prefix_string[64];
 192         struct sched_param      schedp;
 193         char                    *debug_prefix = "alloc";
 194         int                     created_mutexd = 0,/* created_mutext = 0,*/ created_mutexe = 0,
 195                                 created_lock = 0, created_signal = 0, created_debug = 0;
 196 #ifdef DEBUG_DURATION
 197         time_t                  durationupdate;
 198         double                  idle_duration, isdn_duration, port_duration, epoint_duration, join_duration, message_duration, admin_duration;
 199         double                  start_d;
 200 #endif
 201         int                     idletime = 0, idlecheck = 0;
 202         char                    debug_log[128];
 203         char                    tracetext[256];
 204
 205         /* current time */
 206         GET_NOW();
 207
 208         /* show version */
 209         printf("\n** %s  Version %s\n\n", NAME, VERSION_STRING);
 210
 211         /* show options */
 212         if (argc <= 1)
 213         {
 214                 usage:
 215                 printf("\n");
 216                 printf("Usage: lcr (query | start | fork | rules | route)\n");
 217                 printf("query     = Show available isdn ports.\n");
 218                 printf("start     = Run lcr normally, abort with CTRL+C.\n");
 219                 printf("fork      = Do daemon fork and run as background process.\n");
 220                 printf("interface = Get help of available interface syntax.\n");
 221                 printf("rules     = Get help of available routing rule syntax.\n");
 222                 printf("rules [action] = Get individual help for given action.\n");
 223 //              printf("route = Show current routing as it is parsed.\n");
 224                 printf("\n");
 225                 ret = 999;
 226                 goto free;
 227         }
 228
 229         /* init crc */
 230         crc_init();
 231
 232         /* check for root (real or effective) */
 233         if (getuid() && geteuid())
 234         {
 235                 fprintf(stderr, "Please run %s as super-user.\n", NAME);
 236                 goto free;
 237         }
 238
 239         /* the mutex init */
 240         if (pthread_mutex_init(&mutexd, NULL))
 241         {
 242                 fprintf(stderr, "cannot create 'PDEBUG' mutex\n");
 243                 goto free;
 244         }
 245         created_mutexd = 1;
 246 //      if (pthread_mutex_init(&mutext, NULL))
 247 //      {
 248 //              fprintf(stderr, "cannot create 'trace' mutex\n");
 249 //              goto free;
 250 //      }
 251 //      created_mutext = 1;
 252         if (pthread_mutex_init(&mutexe, NULL))
 253         {
 254                 fprintf(stderr, "cannot create 'PERROR' mutex\n");
 255                 goto free;
 256         }
 257         created_mutexe = 1;
 258
 259         /* show interface */
 260         if (!(strcasecmp(argv[1],"interface")))
 261         {
 262                 doc_interface();
 263                 ret = 0;
 264                 goto free;
 265         }
 266
 267         /* show rules */
 268         if (!(strcasecmp(argv[1],"rules")))
 269         {
 270                 if (argc <= 2)
 271                         doc_rules(NULL);
 272                 else
 273                         doc_rules(argv[2]);
 274                 ret = 0;
 275                 goto free;
 276         }
 277
 278         /* query available isdn ports */
 279         if (!(strcasecmp(argv[1],"query")))
 280         {
 281                 mISDN_port_info();
 282                 ret = 0;
 283                 goto free;
 284         }
 285
 286         /* read options */
 287         if (read_options() == 0)
 288                 goto free;
 289
 290         /* initialize stuff of the NT lib */
 291         if (options.deb & DEBUG_STACK)
 292         {
 293                 global_debug = 0xffffffff & ~DBGM_MSG;
 294 //              global_debug = DBGM_L3DATA;
 295         } else
 296                 global_debug = DBGM_MAN;
 297         SPRINT(debug_log, "%s/debug.log", INSTALL_DATA);
 298         if (options.deb & DEBUG_LOG)
 299                 debug_init(global_debug, debug_log, debug_log, debug_log);
 300         else
 301                 debug_init(global_debug, NULL, NULL, NULL);
 302         created_debug = 1;
 303
 304         msg_init();
 305
 306         /* read ruleset(s) */
 307         if (!(ruleset_first = ruleset_parse()))
 308                 goto free;
 309
 310         /* set pointer to main ruleset */
 311         ruleset_main = getrulesetbyname("main");
 312         if (!ruleset_main)
 313         {
 314                 fprintf(stderr, "\n***\n -> Missing 'main' ruleset, causing ALL calls to be disconnected.\n***\n\n");
 315                 PDEBUG(DEBUG_LOG, "Missing 'main' ruleset, causing ALL calls to be disconnected.\n");
 316                 sleep(2);
 317         }
 318
 319 #if 0
 320         /* query available isdn ports */
 321         if (!(strcasecmp(argv[1],"route")))
 322         {
 323                 ruleset_debug(ruleset_first);
 324                 ret = 0;
 325                 goto free;
 326         }
 327 #endif
 328
 329         /* do fork in special cases */
 330         if (!(strcasecmp(argv[1],"fork")))
 331         {
 332                 pid_t pid;
 333
 334                 /* do daemon fork */
 335                 pid = fork();
 336
 337                 if (pid < 0)
 338                 {
 339                         fprintf(stderr, "Cannot fork!\n");
 340                         goto free;
 341                 }
 342                 if (pid != 0)
 343                 {
 344                         exit(0);
 345                 }
 346                 usleep(200000);
 347                 printf("\n");
 348
 349                 /* do second fork */
 350                 pid = fork();
 351
 352                 if (pid < 0)
 353                 {
 354                         fprintf(stderr, "Cannot fork!\n");
 355                         goto free;
 356                 }
 357                 if (pid != 0)
 358                 {
 359                         printf("LCR: Starting daemon.\n");
 360                         exit(0);
 361                 }
 362                 nooutput = 1;
 363         } else
 364         /* if not start */
 365         if (!!strcasecmp(argv[1],"start"))
 366         {
 367                 goto usage;
 368         }
 369
 370         /* create lock and lock! */
 371         if ((lockfd = open("/var/run/lcr.lock", O_CREAT, 0)) < 0)
 372         {
 373                 fprintf(stderr, "Cannot create lock file: /var/run/lcr.lock\n");
 374                 goto free;
 375         }
 376         if (flock(lockfd, LOCK_EX|LOCK_NB) < 0)
 377         {
 378                 if (errno == EWOULDBLOCK)
 379                         fprintf(stderr, "LCR: Another LCR process is running. Please kill the other one.\n");
 380                 else    fprintf(stderr, "Locking process failed: errno=%d\n", errno);
 381                 goto free;
 382         }
 383         created_lock = 1;
 384
 385         /* initialize admin socket */
 386         if (admin_init())
 387         {
 388                 fprintf(stderr, "Unable to initialize admin socket.\n");
 389                 goto free;
 390         }
 391
 392         /* generate alaw / ulaw tables */
 393         generate_tables(options.law);
 394
 395         /* load tones (if requested) */
 396         if (fetch_tones() == 0)
 397         {
 398                 fprintf(stderr, "Unable to fetch tones into memory.\n");
 399                 goto free;
 400         }
 401
 402         /* read interfaces and open ports */
 403         if (!read_interfaces())
 404         {
 405                 PERROR_RUNTIME("No interfaces specified or failed to parse interface.conf.\n");
 406                 fprintf(stderr, "No interfaces specified or failed to parse interface.conf.\n");
 407                 goto free;
 408         }
 409         relink_interfaces();
 410         interface_first = interface_newlist;
 411         interface_newlist = NULL;
 412
 413         /* locking memory paging */
 414         i = 0;
 415         while(i < 10)
 416         {
 417                 if (mlockall(MCL_CURRENT | MCL_FUTURE) >= 0)
 418                         break;
 419                 usleep(200000);
 420                 i++;
 421         }
 422         if (i == 10)
 423         {
 424                 switch(errno)
 425                 {
 426                         case ENOMEM:
 427                         fprintf(stderr, "Not enough memory to lock paging, exitting...\n");
 428                         break;
 429                         case EPERM:
 430                         fprintf(stderr, "No permission to lock paging, exitting...\n");
 431                         break;
 432                         case EFAULT:
 433                         fprintf(stderr, "'Bad address' while locking paging, exitting...\n");
 434                         break;
 435                         default:
 436                         fprintf(stderr, "Unknown error %d while locking paging, exitting...\n", errno);
 437                 }
 438                 goto free;
 439         }
 440
 441         /* set real time scheduler & priority */
 442         if (options.schedule > 1)
 443         {
 444                 memset(&schedp, 0, sizeof(schedp));
 445                 schedp.sched_priority = options.schedule;
 446                 ret = sched_setscheduler(0, SCHED_RR, &schedp);
 447                 if (ret < 0)
 448                 {
 449                         PERROR("Scheduling failed with given priority %d (errno = %d).\nCheck options.conf 'schedule', exitting...\n", options.schedule, errno);
 450                         goto free;
 451                 }
 452         }
 453
 454         /* signal handlers */
 455         signal(SIGINT,sighandler);
 456         signal(SIGHUP,sighandler);
 457         signal(SIGTERM,sighandler);
 458         signal(SIGPIPE,sighandler);
 459         created_signal = 1;
 460
 461         /*** main loop ***/
 462         SPRINT(tracetext, "%s %s started, waiting for calls...", NAME, VERSION_STRING);
 463         start_trace(0, NULL, NULL, NULL, 0, 0, 0, tracetext);
 464         printf("%s\n", tracetext);
 465         end_trace();
 466         GET_NOW();
 467 #ifdef DEBUG_DURATION
 468         start_d = now_d;
 469         durationupdate = now;
 470         idle_duration = isdn_duration = port_duration = epoint_duration = call_duration = message_duration = admin_duration = 0;
 471 #endif
 472         quit = 0;
 473         while(!quit)
 474         {
 475                 /* all loops must be counted from the beginning since nodes might get freed during handler */
 476                 all_idle = 1;
 477
 478                 /* handle mISDN messages from kernel */
 479                 debug_prefix = "ISDN";
 480                 if (mISDN_handler())
 481                         all_idle = 0;
 482 #ifdef DEBUG_DURATION
 483                 GET_NOW();
 484                 isdn_duration += (now_d - start_d);
 485                 start_d = now_d;
 486 #endif
 487 BUDETECT
 488
 489                 /* loop through all port ports and call their handler */
 490                 port_again:
 491                 port = port_first;
 492                 while(port)
 493                 {
 494                         debug_prefix = port->p_name;
 495                         debug_count++;
 496                         ret = port->handler();
 497                         if (ret)
 498                                 all_idle = 0;
 499                         if (ret < 0) /* port has been destroyed */
 500                                 goto port_again;
 501                         port = port->next;
 502                 }
 503 #ifdef DEBUG_DURATION
 504                 GET_NOW();
 505                 port_duration += (now_d - start_d);
 506                 start_d = now_d;
 507 #endif
 508
 509                 /* loop through all epoint and call their handler */
 510                 epoint_again:
 511                 epoint = epoint_first;
 512                 while(epoint)
 513                 {
 514                         debug_prefix = prefix_string;
 515                         SPRINT(prefix_string, "ep%ld", epoint->ep_serial);
 516                         debug_count++;
 517                         ret = epoint->handler();
 518                         if (ret)
 519                                 all_idle = 0;
 520                         if (ret < 0) /* epoint has been destroyed */
 521                                 goto epoint_again;
 522                         epoint = epoint->next;
 523                 }
 524 #ifdef DEBUG_DURATION
 525                 GET_NOW();
 526                 epoint_duration += (now_d - start_d);
 527                 start_d = now_d;
 528 #endif
 529
 530                 /* loop through all joins and call their handler */
 531                 join_again:
 532                 join = join_first;
 533                 while(join)
 534                 {
 535                         debug_prefix = "join";
 536                         debug_count++;
 537                         ret = join->handler();
 538                         if (ret)
 539                                 all_idle = 0;
 540                         if (ret < 0) /* join has been destroyed */
 541                                 goto join_again;
 542                         join = join->next;
 543                 }
 544 #ifdef DEBUG_DURATION
 545                 GET_NOW();
 546                 join_duration += (now_d - start_d);
 547                 start_d = now_d;
 548 #endif
 549
 550                 debug_prefix = 0;
 551
 552                 /* process any message */
 553                 debug_count++;
 554                 debug_prefix = "message";
 555                 while ((message = message_get()))
 556                 {
 557                         all_idle = 0;
 558                         switch(message->flow)
 559                         {
 560                                 case PORT_TO_EPOINT:
 561                                 debug_prefix = "msg port->epoint";
 562                                 epoint = find_epoint_id(message->id_to);
 563                                 if (epoint)
 564                                 {
 565                                         if (epoint->ep_app)
 566                                         {
 567                                                 epoint->ep_app->ea_message_port(message->id_from, message->type, &message->param);
 568                                         } else
 569                                         {
 570                                                 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);
 571                                         }
 572                                 } else
 573                                 {
 574                                         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);
 575                                 }
 576                                 break;
 577
 578                                 case EPOINT_TO_JOIN:
 579                                 debug_prefix = "msg epoint->join";
 580                                 join = find_join_id(message->id_to);
 581                                 if (join)
 582                                 {
 583                                         join->message_epoint(message->id_from, message->type, &message->param);
 584                                 } else
 585                                 {
 586                                         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);
 587                                 }
 588                                 break;
 589
 590                                 case JOIN_TO_EPOINT:
 591                                 debug_prefix = "msg join->epoint";
 592                                 epoint = find_epoint_id(message->id_to);
 593                                 if (epoint)
 594                                 {
 595                                         if (epoint->ep_app)
 596                                         {
 597                                                 epoint->ep_app->ea_message_join(message->id_from, message->type, &message->param);
 598                                         } else
 599                                         {
 600                                                 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);
 601                                         }
 602                                 } else
 603                                 {
 604                                         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);
 605                                 }
 606                                 break;
 607
 608                                 case EPOINT_TO_PORT:
 609                                 debug_prefix = "msg epoint->port";
 610                                 port = find_port_id(message->id_to);
 611                                 if (port)
 612                                 {
 613                                         port->message_epoint(message->id_from, message->type, &message->param);
 614 BUDETECT
 615                                 } else
 616                                 {
 617                                         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);
 618                                 }
 619                                 break;
 620
 621                                 default:
 622                                 PERROR("Message flow %d unknown.\n", message->flow);
 623                         }
 624                         message_free(message);
 625                         debug_count++;
 626                         debug_prefix = "message";
 627                 }
 628 #ifdef DEBUG_DURATION
 629                 GET_NOW();
 630                 message_duration += (now_d - start_d);
 631                 start_d = now_d;
 632 #endif
 633 BUDETECT
 634
 635                 /* handle socket */
 636                 if (admin_handle())
 637                         all_idle = 0;
 638 #ifdef DEBUG_DURATION
 639                 GET_NOW();
 640                 admin_duration += (now_d - start_d);
 641                 start_d = now_d;
 642 #endif
 643 BUDETECT
 644
 645 #if 0
 646                 /* check for child to exit (eliminate zombies) */
 647                 if (waitpid(-1, NULL, WNOHANG) > 0)
 648                 {
 649                         PDEBUG(DEBUG_EPOINT, "a child process (created by endpoint) has exitted.\n");
 650                         all_idle = 0;
 651                 }
 652 #endif
 653
 654                 /* do idle checking */
 655                 if (idlecheck != now)
 656                 {
 657                         PDEBUG(DEBUG_IDLETIME, "Idle time : %d%%\n", idletime/10000);
 658                         idletime = 0;
 659                         idlecheck = now;
 660                 }
 661 #ifdef DEBUG_DURATION
 662                 GET_NOW();
 663                 idle_duration += (now_d - start_d);
 664                 start_d = now_d;
 665                 if (durationupdate != now)
 666                 {
 667                         durationupdate = now;
 668                         printf("Idle:%3d ISDN:%3d Port:%3d Epoint:%3d Join:%3d Message:%3d Admin:%3d\n",
 669                                 (int)(idle_duration*100),
 670                                 (int)(isdn_duration*100),
 671                                 (int)(port_duration*100),
 672                                 (int)(epoint_duration*100),
 673                                 (int)(join_duration*100),
 674                                 (int)(message_duration*100),
 675                                 (int)(admin_duration*100));
 676                         idle_duration = isdn_duration = port_duration = epoint_duration = join_duration = message_duration = admin_duration = 0;
 677                 }
 678 #else
 679                 GET_NOW();
 680 #endif
 681
 682                 /* did we do nothing? so we wait to give time to other processes */
 683                 if (all_idle)
 684                 {
 685                         usleep(4000); /* wait 32 samples */
 686                         idletime += 4000;
 687                 }
 688         }
 689         SPRINT(tracetext, "%s terminated", NAME);
 690         printf("%s\n", tracetext);
 691         start_trace(0, NULL, NULL, NULL, 0, 0, 0, tracetext);
 692         if (ret)
 693                 add_trace("error", NULL, "%d", ret);
 694         end_trace();
 695         ret=0;
 696
 697         /* free all */
 698 free:
 699
 700
 701         /* set scheduler & priority
 702          */
 703         if (options.schedule > 1)
 704         {
 705                 memset(&schedp, 0, sizeof(schedp));
 706                 schedp.sched_priority = 0;
 707                 sched_setscheduler(0, SCHED_OTHER, &schedp);
 708         }
 709         /* reset signals */
 710         if (created_signal)
 711         {
 712                 signal(SIGINT,SIG_DFL);
 713                 signal(SIGHUP,SIG_DFL);
 714                 signal(SIGTERM,SIG_DFL);
 715                 signal(SIGPIPE,SIG_DFL);
 716         }
 717
 718         /* destroy objects */
 719         debug_prefix = "free";
 720
 721         while(port_first)
 722         {
 723                 debug_count++;
 724                 delete port_first;
 725         }
 726         while(epoint_first)
 727         {
 728                 debug_count++;
 729                 delete epoint_first;
 730         }
 731         epoint_first = NULL;
 732         debug_count++;
 733         join_free();
 734
 735         /* free interfaces */
 736         if (interface_first)
 737                 free_interfaces(interface_first);
 738         interface_first = NULL;
 739
 740         /* close isdn ports */
 741         mISDNport_close_all();
 742
 743         /* flush messages */
 744         debug_count++;
 745         i = 0;
 746         while ((message = message_get()))
 747         {
 748                 i++;
 749                 message_free(message);
 750         }
 751         if (i)
 752         {
 753                 PDEBUG(DEBUG_MSG, "freed %d pending messages\n", i);
 754         }
 755
 756         /* free tones */
 757         if (toneset_first)
 758                 free_tones();
 759
 760         /* free admin socket */
 761         admin_cleanup();
 762
 763         /* close lock */
 764         if (created_lock)
 765                 flock(lockfd, LOCK_UN);
 766         if (lockfd >= 0)
 767                 close(lockfd);
 768
 769         /* free rulesets */
 770         if (ruleset_first)
 771                 ruleset_free(ruleset_first);
 772         ruleset_first = NULL;
 773
 774         /* free mutex */
 775         if (created_mutexe)
 776                 if (pthread_mutex_destroy(&mutexe))
 777                         fprintf(stderr, "cannot destroy 'PERROR' mutex\n");
 778 //      if (created_mutext)
 779 //              if (pthread_mutex_destroy(&mutext))
 780 //                      fprintf(stderr, "cannot destroy 'trace' mutex\n");
 781         if (created_mutexd)
 782                 if (pthread_mutex_destroy(&mutexd))
 783                         fprintf(stderr, "cannot destroy 'PDEBUG' mutex\n");
 784
 785         /* close debug */
 786         if (created_debug)
 787                 debug_close();
 788         global_debug = 0;
 789
 790         /* display memory leak */
 791 #define MEMCHECK(a, b) \
 792         if (b) \
 793         { \
 794                 SPRINT(tracetext, a, NAME); \
 795                 start_trace(0, NULL, NULL, NULL, 0, 0, 0, tracetext); \
 796                 if (ret) add_trace("blocks", NULL, "%d", b); \
 797                 end_trace(); \
 798                 printf("\n******************************\n\007"); \
 799                 printf("\nERROR: %d %s\n", b, a); \
 800                 printf("\n******************************\n"); \
 801                 ret = -1; \
 802         }
 803         MEMCHECK("",memuse)
 804         MEMCHECK("memory block(s) left (port.cpp ...)",pmemuse)
 805         MEMCHECK("memory block(s) left (epoint*.cpp ...)",ememuse)
 806         MEMCHECK("memory block(s) left (join*.cpp)",cmemuse)
 807         MEMCHECK("memory block(s) left (message.c)",mmemuse)
 808         MEMCHECK("memory block(s) left (route.c)",rmemuse)
 809         MEMCHECK("memory block(s) left (args)",amemuse)
 810         MEMCHECK("class(es) left",classuse)
 811         MEMCHECK("file descriptor(s) left",fduse)
 812         MEMCHECK("file handler(s) left",fhuse)
 813
 814         /* take me out */
 815         return(ret);
 816 }
 817
 818
 819 #ifdef BUDETECT_DEF
 820 /* special debug function to detect buffer overflow
 821  */
 822 int budetect_stop = 0;
 823 void budetect(const char *file, int line, char *function)
 824 {
 825         if (budetect_stop)
 826                 return;
 827         /* modify this function to detect race-bugs */
 828 #warning DID YOU MODIFY THIS FUNCTION TO DETECT THE BUFFER OVERFLOW BUG?
 829         class Port *port;
 830         class PmISDN *pmisdn;
 831         struct mISDNport *mISDNport = mISDNport_first;
 832         int i, ii;
 833
 834         while(mISDNport)
 835         {
 836                 i = 0;
 837                 ii = mISDNport->b_num;
 838                 while(i < ii)
 839                 {
 840                         if (mISDNport->b_port[i])
 841                         {
 842                                 port = port_first;
 843                                 while(port)
 844                                 {
 845                                         if ((port->p_type&PORT_CLASS_MASK) == PORT_CLASS_ISDN)
 846                                         {
 847                                                 pmisdn = (class PmISDN *)port;
 848                                                 if (pmisdn->p_isdn_crypt_listen)
 849                                                 {
 850                                                         PERROR_RUNTIME("************************************************\n");
 851                                                         PERROR_RUNTIME("** BUG detected in %s, line %d, function %s\n", file, line, function);
 852                                                         PERROR_RUNTIME("** p_isdn_crypt_listen = %d\n", pmisdn->p_isdn_crypt_listen);
 853                                                         PERROR_RUNTIME("************************************************\n");
 854                                                         budetect_stop = 1;
 855                                                 }
 856                                         }
 857                                         if (port == mISDNport->b_port[i])
 858                                                 break;
 859                                         port = port->next;
 860                                         if (!port)
 861                                         {
 862                                                 PERROR_RUNTIME("************************************************\n");
 863                                                 PERROR_RUNTIME("** BUG detected in %s, line %d, function %s\n", file, line, function);
 864                                                 PERROR_RUNTIME("** b_port not in list.\n");
 865                                                 PERROR_RUNTIME("************************************************\n");
 866                                                 budetect_stop = 1;
 867                                         }
 868                                 }
 869                         }
 870                         i++;
 871                 }
 872                 mISDNport = mISDNport->next;
 873         }
 874
 875 }
 876 #endif
 877