1 /*****************************************************************************\
3 ** Linux Call Router **
5 **---------------------------------------------------------------------------**
6 ** Copyright: Andreas Eversberg **
10 \*****************************************************************************/
19 struct timeval now_tv;
20 struct timezone now_tz;
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); \
29 FILE *debug_fp = NULL;
33 struct lcr_fdset lcr_fdset[FD_SETSIZE];
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
52 char *debug_prefix = 0;
55 int debug_newline = 1;
58 void debug_usleep(int msec, char *file, int line, int hour, int min, int sec)
63 void debug(const char *function, int line, char *prefix, char *buffer)
65 /* if we have a new debug count, we add a mark */
66 if (last_debug != debug_count)
68 last_debug = debug_count;
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);
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);
78 printf("\033[32m%06d %s\033[37m%s", debug_count%1000000, prefix?prefix:"", prefix?" ":"");
80 printf("(in %s() line %d): %s", function, line, buffer);
90 fprintf(debug_fp, "%s%s(in %s() line %d): %s", prefix?prefix:"", prefix?" ":"", function, line, buffer);
92 fprintf(debug_fp, "%s%s: %s", prefix?prefix:"", prefix?" ":"", buffer);
98 if (buffer[strlen(buffer)-1] == '\n')
103 void _printdebug(const char *function, int line, unsigned long mask, const char *fmt, ...)
108 if (!(options.deb & mask))
110 pthread_mutex_lock(&mutexd);
113 VUNPRINT(buffer,sizeof(buffer)-1,fmt,args);
114 buffer[sizeof(buffer)-1]=0;
117 debug(function, line, debug_prefix, buffer);
119 pthread_mutex_unlock(&mutexd);
122 void _printerror(const char *function, int line, const char *fmt, ...)
127 pthread_mutex_lock(&mutexe);
130 VUNPRINT(buffer,sizeof(buffer)-1,fmt,args);
131 buffer[sizeof(buffer)-1]=0;
135 debug(function, line, "ERROR", buffer);
136 else /* only if we do not debug */
139 fprintf(stderr, "ERROR (in %s() line %d) %s", function, line, buffer);
141 fprintf(stderr, "ERROR %s", buffer);
144 pthread_mutex_unlock(&mutexe);
148 void sighandler(int sigset)
150 struct sched_param schedp;
152 if (sigset == SIGHUP)
154 if (sigset == SIGPIPE)
159 /* set scheduler & priority */
160 if (options.schedule > 1)
162 memset(&schedp, 0, sizeof(schedp));
163 schedp.sched_priority = 0;
164 sched_setscheduler(0, SCHED_OTHER, &schedp);
166 fprintf(stderr, "LCR: Signal received: %d\n", sigset);
167 PDEBUG(DEBUG_LOG, "Signal received: %d\n", sigset);
175 int main(int argc, char *argv[])
178 int lockfd = -1; /* file lock */
179 struct lcr_msg *message;
181 class Endpoint *epoint;
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,
191 int idletime = 0, idlecheck = 0;
196 memset(lcr_fdset, 0, sizeof(lcr_fdset));
199 /* lock LCR process */
200 // pthread_mutex_lock(&mutex_lcr);
206 printf("\n** %s Version %s\n\n", NAME, VERSION_STRING);
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");
229 /* check for root (real or effective) */
230 if (getuid() && geteuid())
232 fprintf(stderr, "Please run %s as super-user.\n", NAME);
237 if (pthread_mutex_init(&mutexd, NULL))
239 fprintf(stderr, "cannot create 'PDEBUG' mutex\n");
243 // if (pthread_mutex_init(&mutext, NULL))
245 // fprintf(stderr, "cannot create 'trace' mutex\n");
248 // created_mutext = 1;
249 if (pthread_mutex_init(&mutexe, NULL))
251 fprintf(stderr, "cannot create 'PERROR' mutex\n");
257 if (!(strcasecmp(argv[1],"interface")))
265 if (!(strcasecmp(argv[1],"rules")))
275 /* query available isdn ports */
276 if (!(strcasecmp(argv[1],"query")))
284 if (read_options() == 0)
288 if (mISDN_initialize() < 0)
293 /* read ruleset(s) */
294 if (!(ruleset_first = ruleset_parse()))
297 /* set pointer to main ruleset */
298 ruleset_main = getrulesetbyname("main");
301 fprintf(stderr, "\n***\n -> Missing 'main' ruleset, causing ALL calls to be disconnected.\n***\n\n");
302 PDEBUG(DEBUG_LOG, "Missing 'main' ruleset, causing ALL calls to be disconnected.\n");
307 /* query available isdn ports */
308 if (!(strcasecmp(argv[1],"route")))
310 ruleset_debug(ruleset_first);
316 /* do fork in special cases */
317 if (!(strcasecmp(argv[1],"fork")))
326 fprintf(stderr, "Cannot fork!\n");
341 fprintf(stderr, "Cannot fork!\n");
346 printf("LCR: Starting daemon.\n");
352 if (!!strcasecmp(argv[1],"start"))
357 /* create lock and lock! */
358 if ((lockfd = open("/var/run/lcr.lock", O_CREAT, 0)) < 0)
360 fprintf(stderr, "Cannot create lock file: /var/run/lcr.lock\n");
363 if (flock(lockfd, LOCK_EX|LOCK_NB) < 0)
365 if (errno == EWOULDBLOCK)
366 fprintf(stderr, "LCR: Another LCR process is running. Please kill the other one.\n");
367 else fprintf(stderr, "Locking process failed: errno=%d\n", errno);
372 /* initialize admin socket */
375 fprintf(stderr, "Unable to initialize admin socket.\n");
379 /* generate alaw / ulaw tables */
380 generate_tables(options.law);
382 /* load tones (if requested) */
383 if (fetch_tones() == 0)
385 fprintf(stderr, "Unable to fetch tones into memory.\n");
389 /* read interfaces and open ports */
390 if (!read_interfaces())
392 PERROR_RUNTIME("No interfaces specified or failed to parse interface.conf.\n");
393 fprintf(stderr, "No interfaces specified or failed to parse interface.conf.\n");
397 interface_first = interface_newlist;
398 interface_newlist = NULL;
400 /* locking memory paging */
404 if (mlockall(MCL_CURRENT | MCL_FUTURE) >= 0)
414 fprintf(stderr, "Not enough memory to lock paging, exitting...\n");
417 fprintf(stderr, "No permission to lock paging, exitting...\n");
420 fprintf(stderr, "'Bad address' while locking paging, exitting...\n");
423 fprintf(stderr, "Unknown error %d while locking paging, exitting...\n", errno);
428 /* set real time scheduler & priority */
429 if (options.schedule > 1)
431 memset(&schedp, 0, sizeof(schedp));
432 schedp.sched_priority = options.schedule;
433 ret = sched_setscheduler(0, SCHED_RR, &schedp);
436 PERROR("Scheduling failed with given priority %d (errno = %d).\nCheck options.conf 'schedule', exitting...\n", options.schedule, errno);
441 /* signal handlers */
442 signal(SIGINT,sighandler);
443 signal(SIGHUP,sighandler);
444 signal(SIGTERM,sighandler);
445 signal(SIGPIPE,sighandler);
449 SPRINT(tracetext, "%s %s started, waiting for calls...", NAME, VERSION_STRING);
450 start_trace(0, NULL, NULL, NULL, 0, 0, 0, tracetext);
451 printf("%s\n", tracetext);
460 if (now_d-last_d > 1.0)
462 PERROR("LCR was stalling %d.%d seconds\n", ((int)((now_d-last_d)*10.0))/10, (int)((now_d-last_d)*10.0));
464 /* all loops must be counted from the beginning since nodes might get freed during handler */
467 //#warning debugging usleep crash
468 // debug_usleep(1, __FILE__, __LINE__, now_tm->tm_hour, now_tm->tm_min, now_tm->tm_sec);
470 /* handle mISDN messages from kernel */
471 debug_prefix = "ISDN";
474 //#warning debugging usleep crash
475 // debug_usleep(1, __FILE__, __LINE__, now_tm->tm_hour, now_tm->tm_min, now_tm->tm_sec);
479 /* loop through all port ports and call their handler */
484 debug_prefix = port->p_name;
486 ret = port->handler();
489 if (ret < 0) /* port has been destroyed */
494 /* loop through all epoint and call their handler */
496 epoint = epoint_first;
499 debug_prefix = prefix_string;
500 SPRINT(prefix_string, "ep%ld", epoint->ep_serial);
502 ret = epoint->handler();
505 if (ret < 0) /* epoint has been destroyed */
507 epoint = epoint->next;
510 /* loop through all joins and call their handler */
515 debug_prefix = "join";
517 ret = join->handler();
520 if (ret < 0) /* join has been destroyed */
527 /* process any message */
529 debug_prefix = "message";
530 while ((message = message_get()))
533 switch(message->flow)
536 debug_prefix = "msg port->epoint";
537 epoint = find_epoint_id(message->id_to);
542 epoint->ep_app->ea_message_port(message->id_from, message->type, &message->param);
545 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);
549 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);
554 debug_prefix = "msg epoint->join";
555 join = find_join_id(message->id_to);
558 join->message_epoint(message->id_from, message->type, &message->param);
561 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);
566 debug_prefix = "msg join->epoint";
567 epoint = find_epoint_id(message->id_to);
572 epoint->ep_app->ea_message_join(message->id_from, message->type, &message->param);
575 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);
579 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);
584 debug_prefix = "msg epoint->port";
585 port = find_port_id(message->id_to);
588 port->message_epoint(message->id_from, message->type, &message->param);
592 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);
597 PERROR("Message flow %d unknown.\n", message->flow);
599 message_free(message);
601 debug_prefix = "message";
611 /* check for child to exit (eliminate zombies) */
612 if (waitpid(-1, NULL, WNOHANG) > 0)
614 PDEBUG(DEBUG_EPOINT, "a child process (created by endpoint) has exitted.\n");
618 //#warning debugging usleep crash
619 // debug_usleep(1, __FILE__, __LINE__, now_tm->tm_hour, now_tm->tm_min, now_tm->tm_sec);
621 /* do idle checking */
622 if (idlecheck != now)
624 PDEBUG(DEBUG_IDLETIME, "Idle time : %d%%\n", idletime/10000);
629 /* did we do nothing? so we wait to give time to other processes */
632 // pthread_mutex_unlock(&mutex_lcr); // unlock LCR
633 debug_usleep(4000, __FILE__, __LINE__, now_tm->tm_hour, now_tm->tm_min, now_tm->tm_sec);
634 // pthread_mutex_lock(&mutex_lcr); // lock LCR
638 SPRINT(tracetext, "%s terminated", NAME);
639 printf("%s\n", tracetext);
640 start_trace(0, NULL, NULL, NULL, 0, 0, 0, tracetext);
642 add_trace("signal", NULL, "%d", quit);
650 /* set scheduler & priority
652 if (options.schedule > 1)
654 memset(&schedp, 0, sizeof(schedp));
655 schedp.sched_priority = options.schedule;
656 sched_setscheduler(0, SCHED_OTHER, &schedp);
661 signal(SIGINT,SIG_DFL);
662 signal(SIGHUP,SIG_DFL);
663 signal(SIGTERM,SIG_DFL);
664 signal(SIGPIPE,SIG_DFL);
667 /* destroy objects */
668 debug_prefix = "free";
684 /* free interfaces */
686 free_interfaces(interface_first);
687 interface_first = NULL;
689 /* close isdn ports */
690 mISDNport_close_all();
695 while ((message = message_get()))
698 message_free(message);
702 PDEBUG(DEBUG_MSG, "freed %d pending messages\n", i);
709 /* free admin socket */
714 flock(lockfd, LOCK_UN);
720 ruleset_free(ruleset_first);
721 ruleset_first = NULL;
725 if (pthread_mutex_destroy(&mutexe))
726 fprintf(stderr, "cannot destroy 'PERROR' mutex\n");
727 // if (created_mutext)
728 // if (pthread_mutex_destroy(&mutext))
729 // fprintf(stderr, "cannot destroy 'trace' mutex\n");
731 if (pthread_mutex_destroy(&mutexd))
732 fprintf(stderr, "cannot destroy 'PDEBUG' mutex\n");
734 /* deinitialize mISDN */
736 mISDN_deinitialize();
738 /* display memory leak */
739 #define MEMCHECK(a, b) \
742 SPRINT(tracetext, a, NAME); \
743 start_trace(0, NULL, NULL, NULL, 0, 0, 0, tracetext); \
744 if (ret) add_trace("blocks", NULL, "%d", b); \
746 printf("\n******************************\n\007"); \
747 printf("\nERROR: %d %s\n", b, a); \
748 printf("\n******************************\n"); \
752 MEMCHECK("memory block(s) left (port.cpp ...)",pmemuse)
753 MEMCHECK("memory block(s) left (epoint*.cpp ...)",ememuse)
754 MEMCHECK("memory block(s) left (join*.cpp)",cmemuse)
755 MEMCHECK("memory block(s) left (message.c)",mmemuse)
756 MEMCHECK("memory block(s) left (route.c)",rmemuse)
757 MEMCHECK("memory block(s) left (args)",amemuse)
758 MEMCHECK("class(es) left",classuse)
759 MEMCHECK("file descriptor(s) left",fduse)
760 MEMCHECK("file handler(s) left",fhuse)
762 /* unlock LCR process */
763 // pthread_mutex_unlock(&mutex_lcr);
771 /* special debug function to detect buffer overflow
773 int budetect_stop = 0;
774 void budetect(const char *file, int line, char *function)
778 /* modify this function to detect race-bugs */
779 #warning DID YOU MODIFY THIS FUNCTION TO DETECT THE BUFFER OVERFLOW BUG?
781 class PmISDN *pmisdn;
782 struct mISDNport *mISDNport = mISDNport_first;
788 ii = mISDNport->b_num;
791 if (mISDNport->b_port[i])
796 if ((port->p_type&PORT_CLASS_MASK) == PORT_CLASS_ISDN)
798 pmisdn = (class PmISDN *)port;
799 if (pmisdn->p_isdn_crypt_listen)
801 PERROR_RUNTIME("************************************************\n");
802 PERROR_RUNTIME("** BUG detected in %s, line %d, function %s\n", file, line, function);
803 PERROR_RUNTIME("** p_isdn_crypt_listen = %d\n", pmisdn->p_isdn_crypt_listen);
804 PERROR_RUNTIME("************************************************\n");
808 if (port == mISDNport->b_port[i])
813 PERROR_RUNTIME("************************************************\n");
814 PERROR_RUNTIME("** BUG detected in %s, line %d, function %s\n", file, line, function);
815 PERROR_RUNTIME("** b_port not in list.\n");
816 PERROR_RUNTIME("************************************************\n");
823 mISDNport = mISDNport->next;