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