2 * ngIRCd -- The Next Generation IRC Daemon
3 * Copyright (c)2001-2003 by Alexander Barton (alex@barton.de)
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 * Please read the file COPYING, README and AUTHORS for more information.
11 * Connection management
19 static char UNUSED id[] = "$Id: conn.c,v 1.129 2003/12/27 13:01:12 alex Exp $";
30 #include <sys/socket.h>
32 #include <sys/types.h>
34 #include <netinet/in.h>
36 #ifdef HAVE_ARPA_INET_H
37 #include <arpa/inet.h>
39 #define PF_INET AF_INET
43 #include <stdint.h> /* e.g. for Mac OS X */
47 #include <tcpd.h> /* for TCP Wrappers */
61 #include "conn-func.h"
67 #include "rendezvous.h"
73 #define SERVER_WAIT (NONE - 1)
76 LOCAL VOID Handle_Read PARAMS(( INT sock ));
77 LOCAL BOOLEAN Handle_Write PARAMS(( CONN_ID Idx ));
78 LOCAL VOID New_Connection PARAMS(( INT Sock ));
79 LOCAL CONN_ID Socket2Index PARAMS(( INT Sock ));
80 LOCAL VOID Read_Request PARAMS(( CONN_ID Idx ));
81 LOCAL BOOLEAN Try_Write PARAMS(( CONN_ID Idx ));
82 LOCAL BOOLEAN Handle_Buffer PARAMS(( CONN_ID Idx ));
83 LOCAL VOID Check_Connections PARAMS(( VOID ));
84 LOCAL VOID Check_Servers PARAMS(( VOID ));
85 LOCAL VOID Init_Conn_Struct PARAMS(( CONN_ID Idx ));
86 LOCAL BOOLEAN Init_Socket PARAMS(( INT Sock ));
87 LOCAL VOID New_Server PARAMS(( INT Server, CONN_ID Idx ));
88 LOCAL VOID Read_Resolver_Result PARAMS(( INT r_fd ));
89 LOCAL VOID Simple_Message PARAMS(( INT Sock, CHAR *Msg ));
90 LOCAL INT Count_Connections PARAMS(( struct sockaddr_in addr ));
92 LOCAL fd_set My_Listeners;
93 LOCAL fd_set My_Sockets;
94 LOCAL fd_set My_Connects;
97 INT allow_severity = LOG_INFO;
98 INT deny_severity = LOG_ERR;
105 /* Modul initialisieren: statische Strukturen "ausnullen". */
109 /* Speicher fuer Verbindungs-Pool anfordern */
110 Pool_Size = CONNECTION_POOL;
111 if( Conf_MaxConnections > 0 )
113 /* konfiguriertes Limit beachten */
114 if( Pool_Size > Conf_MaxConnections ) Pool_Size = Conf_MaxConnections;
116 My_Connections = malloc( sizeof( CONNECTION ) * Pool_Size );
117 if( ! My_Connections )
119 /* Speicher konnte nicht alloziert werden! */
120 Log( LOG_EMERG, "Can't allocate memory! [Conn_Init]" );
124 Log( LOG_DEBUG, "Allocated connection pool for %d items (%ld bytes).", Pool_Size, sizeof( CONNECTION ) * Pool_Size );
127 /* zu Beginn haben wir keine Verbindungen */
128 FD_ZERO( &My_Listeners );
129 FD_ZERO( &My_Sockets );
130 FD_ZERO( &My_Connects );
132 /* Groesster File-Descriptor fuer select() */
135 /* Connection-Struktur initialisieren */
136 for( i = 0; i < Pool_Size; i++ ) Init_Conn_Struct( i );
138 /* Global write counter */
146 /* Modul abmelden: alle noch offenen Connections
147 * schliessen und freigeben. */
153 Log( LOG_DEBUG, "Shutting down all connections ..." );
157 Rendezvous_UnregisterListeners( );
160 /* Sockets schliessen */
161 for( i = 0; i < Conn_MaxFD + 1; i++ )
163 if( FD_ISSET( i, &My_Sockets ))
165 for( idx = 0; idx < Pool_Size; idx++ )
167 if( My_Connections[idx].sock == i ) break;
169 if( FD_ISSET( i, &My_Listeners ))
173 Log( LOG_DEBUG, "Listening socket %d closed.", i );
176 else if( FD_ISSET( i, &My_Connects ))
180 Log( LOG_DEBUG, "Connection %d closed during creation (socket %d).", idx, i );
183 else if( idx < Pool_Size )
185 if( NGIRCd_SignalRestart ) Conn_Close( idx, NULL, "Server going down (restarting)", TRUE );
186 else Conn_Close( idx, NULL, "Server going down", TRUE );
190 Log( LOG_WARNING, "Closing unknown connection %d ...", i );
196 free( My_Connections );
197 My_Connections = NULL;
203 Conn_InitListeners( VOID )
205 /* Initialize ports on which the server should accept connections */
210 for( i = 0; i < Conf_ListenPorts_Count; i++ )
212 if( Conn_NewListener( Conf_ListenPorts[i] )) created++;
213 else Log( LOG_ERR, "Can't listen on port %u!", Conf_ListenPorts[i] );
216 } /* Conn_InitListeners */
220 Conn_ExitListeners( VOID )
222 /* Close down all listening sockets */
227 Rendezvous_UnregisterListeners( );
230 Log( LOG_INFO, "Shutting down all listening sockets ..." );
231 for( i = 0; i < Conn_MaxFD + 1; i++ )
233 if( FD_ISSET( i, &My_Sockets ) && FD_ISSET( i, &My_Listeners ))
237 Log( LOG_DEBUG, "Listening socket %d closed.", i );
241 } /* Conn_ExitListeners */
245 Conn_NewListener( CONST UINT Port )
247 /* Create new listening socket on specified port */
249 struct sockaddr_in addr;
250 struct in_addr inaddr;
253 CHAR name[CLIENT_ID_LEN], *info;
256 /* Server-"Listen"-Socket initialisieren */
257 memset( &addr, 0, sizeof( addr ));
258 memset( &inaddr, 0, sizeof( inaddr ));
259 addr.sin_family = AF_INET;
260 addr.sin_port = htons( Port );
261 if( Conf_ListenAddress[0] )
263 #ifdef HAVE_INET_ATON
264 if( inet_aton( Conf_ListenAddress, &inaddr ) == 0 )
266 inaddr.s_addr = inet_addr( Conf_ListenAddress );
267 if( inaddr.s_addr == (unsigned)-1 )
270 Log( LOG_CRIT, "Can't listen on %s:%u: can't convert ip address %s!", Conf_ListenAddress, Port, Conf_ListenAddress );
274 else inaddr.s_addr = htonl( INADDR_ANY );
275 addr.sin_addr = inaddr;
277 /* Socket erzeugen */
278 sock = socket( PF_INET, SOCK_STREAM, 0);
281 Log( LOG_CRIT, "Can't create socket: %s!", strerror( errno ));
285 if( ! Init_Socket( sock )) return FALSE;
288 if( bind( sock, (struct sockaddr *)&addr, (socklen_t)sizeof( addr )) != 0 )
290 Log( LOG_CRIT, "Can't bind socket: %s!", strerror( errno ));
295 /* in "listen mode" gehen :-) */
296 if( listen( sock, 10 ) != 0 )
298 Log( LOG_CRIT, "Can't listen on soecket: %s!", strerror( errno ));
303 /* Neuen Listener in Strukturen einfuegen */
304 FD_SET( sock, &My_Listeners );
305 FD_SET( sock, &My_Sockets );
307 if( sock > Conn_MaxFD ) Conn_MaxFD = sock;
309 if( Conf_ListenAddress[0]) Log( LOG_INFO, "Now listening on %s:%d (socket %d).", Conf_ListenAddress, Port, sock );
310 else Log( LOG_INFO, "Now listening on 0.0.0.0:%d (socket %d).", Port, sock );
313 /* Get best server description text */
314 if( ! Conf_ServerInfo[0] ) info = Conf_ServerName;
317 /* Use server info string */
319 if( Conf_ServerInfo[0] == '[' )
321 /* Cut off leading hostname part in "[]" */
322 info = strchr( Conf_ServerInfo, ']' );
326 while( *info == ' ' ) info++;
329 if( ! info ) info = Conf_ServerInfo;
332 /* Add port number to description if non-standard */
333 if( Port != 6667 ) snprintf( name, sizeof( name ), "%s (port %u)", info, Port );
334 else strlcpy( name, info, sizeof( name ));
336 /* Register service */
337 Rendezvous_Register( name, RENDEZVOUS_TYPE, Port );
341 } /* Conn_NewListener */
347 /* "Hauptschleife": Aktive Verbindungen ueberwachen. Folgende Aktionen
348 * werden dabei durchgefuehrt, bis der Server terminieren oder neu
351 * - neue Verbindungen annehmen,
352 * - Server-Verbindungen aufbauen,
353 * - geschlossene Verbindungen loeschen,
354 * - volle Schreibpuffer versuchen zu schreiben,
355 * - volle Lesepuffer versuchen zu verarbeiten,
356 * - Antworten von Resolver Sub-Prozessen annehmen.
359 fd_set read_sockets, write_sockets;
365 start = time( NULL );
366 while(( ! NGIRCd_SignalQuit ) && ( ! NGIRCd_SignalRestart ))
371 Rendezvous_Handler( );
374 /* Should the configuration be reloaded? */
375 if( NGIRCd_SignalRehash ) NGIRCd_Rehash( );
377 /* Check configured servers and established links */
379 Check_Connections( );
383 /* noch volle Lese-Buffer suchen */
384 for( i = 0; i < Pool_Size; i++ )
386 if(( My_Connections[i].sock > NONE ) && ( My_Connections[i].rdatalen > 0 ) &&
387 ( My_Connections[i].delaytime < t ))
389 /* Kann aus dem Buffer noch ein Befehl extrahiert werden? */
390 if( Handle_Buffer( i )) timeout = FALSE;
394 /* noch volle Schreib-Puffer suchen */
395 FD_ZERO( &write_sockets );
396 for( i = 0; i < Pool_Size; i++ )
399 if(( My_Connections[i].sock > NONE ) && (( My_Connections[i].wdatalen > 0 ) || ( My_Connections[i].zip.wdatalen > 0 )))
401 if(( My_Connections[i].sock > NONE ) && ( My_Connections[i].wdatalen > 0 ))
404 /* Socket der Verbindung in Set aufnehmen */
405 FD_SET( My_Connections[i].sock, &write_sockets );
409 /* Sockets mit im Aufbau befindlichen ausgehenden Verbindungen suchen */
410 for( i = 0; i < Pool_Size; i++ )
412 if(( My_Connections[i].sock > NONE ) && ( FD_ISSET( My_Connections[i].sock, &My_Connects ))) FD_SET( My_Connections[i].sock, &write_sockets );
415 /* von welchen Sockets koennte gelesen werden? */
416 read_sockets = My_Sockets;
417 for( i = 0; i < Pool_Size; i++ )
419 if(( My_Connections[i].sock > NONE ) && ( My_Connections[i].host[0] == '\0' ))
421 /* Hier muss noch auf den Resolver Sub-Prozess gewartet werden */
422 FD_CLR( My_Connections[i].sock, &read_sockets );
424 if(( My_Connections[i].sock > NONE ) && ( FD_ISSET( My_Connections[i].sock, &My_Connects )))
426 /* Hier laeuft noch ein asyncrones connect() */
427 FD_CLR( My_Connections[i].sock, &read_sockets );
429 if( My_Connections[i].delaytime > t )
431 /* Fuer die Verbindung ist eine "Penalty-Zeit" gesetzt */
432 FD_CLR( My_Connections[i].sock, &read_sockets );
435 for( i = 0; i < Conn_MaxFD + 1; i++ )
437 /* Pipes von Resolver Sub-Prozessen aufnehmen */
438 if( FD_ISSET( i, &Resolver_FDs ))
440 FD_SET( i, &read_sockets );
444 /* Timeout initialisieren */
446 if( timeout ) tv.tv_sec = 1;
449 /* Auf Aktivitaet warten */
450 i = select( Conn_MaxFD + 1, &read_sockets, &write_sockets, NULL, &tv );
453 /* keine Veraenderung an den Sockets */
458 /* Fehler (z.B. Interrupt) */
461 Log( LOG_EMERG, "Conn_Handler(): select(): %s!", strerror( errno ));
462 Log( LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME );
468 /* Koennen Daten geschrieben werden? */
469 for( i = 0; i < Conn_MaxFD + 1; i++ )
471 if( ! FD_ISSET( i, &write_sockets )) continue;
473 /* Es kann geschrieben werden ... */
474 idx = Socket2Index( i );
475 if( idx == NONE ) continue;
477 if( ! Handle_Write( idx ))
479 /* Fehler beim Schreiben! Diesen Socket nun
480 * auch aus dem Read-Set entfernen: */
481 FD_CLR( i, &read_sockets );
485 /* Daten zum Lesen vorhanden? */
486 for( i = 0; i < Conn_MaxFD + 1; i++ )
488 if( FD_ISSET( i, &read_sockets )) Handle_Read( i );
492 if( NGIRCd_SignalQuit ) Log( LOG_NOTICE|LOG_snotice, "Server going down NOW!" );
493 else if( NGIRCd_SignalRestart ) Log( LOG_NOTICE|LOG_snotice, "Server restarting NOW!" );
499 Conn_WriteStr( CONN_ID Idx, CHAR *Format, ... )
502 Conn_WriteStr( Idx, Format, va_alist )
508 /* String in Socket schreiben. CR+LF wird von dieser Funktion
509 * automatisch angehaengt. Im Fehlerfall wird dir Verbindung
510 * getrennt und FALSE geliefert. */
512 CHAR buffer[COMMAND_LEN];
516 assert( Idx > NONE );
517 assert( Format != NULL );
520 va_start( ap, Format );
524 if( vsnprintf( buffer, COMMAND_LEN - 2, Format, ap ) == COMMAND_LEN - 2 )
526 Log( LOG_CRIT, "Text too long to send (connection %d)!", Idx );
527 Conn_Close( Idx, "Text too long to send!", NULL, FALSE );
532 if( NGIRCd_Sniffer ) Log( LOG_DEBUG, " -> connection %d: '%s'.", Idx, buffer );
535 strlcat( buffer, "\r\n", sizeof( buffer ));
536 ok = Conn_Write( Idx, buffer, strlen( buffer ));
537 My_Connections[Idx].msg_out++;
541 } /* Conn_WriteStr */
545 Conn_Write( CONN_ID Idx, CHAR *Data, INT Len )
547 /* Daten in Socket schreiben. Bei "fatalen" Fehlern wird
548 * der Client disconnectiert und FALSE geliefert. */
550 assert( Idx > NONE );
551 assert( Data != NULL );
554 /* Ist der entsprechende Socket ueberhaupt noch offen? In einem
555 * "Handler-Durchlauf" kann es passieren, dass dem nicht mehr so
556 * ist, wenn einer von mehreren Conn_Write()'s fehlgeschlagen ist.
557 * In diesem Fall wird hier einfach ein Fehler geliefert. */
558 if( My_Connections[Idx].sock <= NONE )
561 Log( LOG_DEBUG, "Skipped write on closed socket (connection %d).", Idx );
566 /* Pruefen, ob im Schreibpuffer genuegend Platz ist. Ziel ist es,
567 * moeglichts viel im Puffer zu haben und _nicht_ gleich alles auf den
568 * Socket zu schreiben (u.a. wg. Komprimierung). */
569 if( WRITEBUFFER_LEN - My_Connections[Idx].wdatalen - Len <= 0 )
571 /* Der Puffer ist dummerweise voll. Jetzt versuchen, den Puffer
572 * zu schreiben, wenn das nicht klappt, haben wir ein Problem ... */
573 if( ! Try_Write( Idx )) return FALSE;
575 /* nun neu pruefen: */
576 if( WRITEBUFFER_LEN - My_Connections[Idx].wdatalen - Len <= 0 )
578 Log( LOG_NOTICE, "Write buffer overflow (connection %d)!", Idx );
579 Conn_Close( Idx, "Write buffer overflow!", NULL, FALSE );
585 if( My_Connections[Idx].options & CONN_ZIP )
587 /* Daten komprimieren und in Puffer kopieren */
588 if( ! Zip_Buffer( Idx, Data, Len )) return FALSE;
593 /* Daten in Puffer kopieren */
594 memcpy( My_Connections[Idx].wbuf + My_Connections[Idx].wdatalen, Data, Len );
595 My_Connections[Idx].wdatalen += Len;
596 My_Connections[Idx].bytes_out += Len;
599 /* Adjust global write counter */
607 Conn_Close( CONN_ID Idx, CHAR *LogMsg, CHAR *FwdMsg, BOOLEAN InformClient )
609 /* Close connection. Open pipes of asyncronous resolver
610 * sub-processes are closed down. */
615 DOUBLE in_z_k, out_z_k;
619 assert( Idx > NONE );
620 assert( My_Connections[Idx].sock > NONE );
622 /* Is this link already shutting down? */
623 if( My_Connections[Idx].options & CONN_ISCLOSING )
625 /* Conn_Close() has been called recursively for this link;
626 * probabe reason: Try_Write() failed -- see below. */
630 /* Mark link as "closing" */
631 My_Connections[Idx].options |= CONN_ISCLOSING;
633 /* Search client, if any */
634 c = Client_GetFromConn( Idx );
636 /* Should the client be informed? */
640 /* Send statistics to client if registered as user: */
641 if(( c != NULL ) && ( Client_Type( c ) == CLIENT_USER ))
643 Conn_WriteStr( Idx, "NOTICE %s :%sConnection statistics: client %.1f kb, server %.1f kb.", Client_ThisServer( ), NOTICE_TXTPREFIX, (DOUBLE)My_Connections[Idx].bytes_in / 1024, (DOUBLE)My_Connections[Idx].bytes_out / 1024 );
647 /* Send ERROR to client (see RFC!) */
648 if( FwdMsg ) Conn_WriteStr( Idx, "ERROR :%s", FwdMsg );
649 else Conn_WriteStr( Idx, "ERROR :Closing connection." );
650 if( My_Connections[Idx].sock == NONE ) return;
653 /* Try to write out the write buffer */
654 (VOID)Try_Write( Idx );
656 /* Shut down socket */
657 if( close( My_Connections[Idx].sock ) != 0 )
659 /* Oops, we can't close the socket!? This is fatal! */
660 Log( LOG_EMERG, "Error closing connection %d (socket %d) with %s:%d - %s!", Idx, My_Connections[Idx].sock, My_Connections[Idx].host, ntohs( My_Connections[Idx].addr.sin_port), strerror( errno ));
661 Log( LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME );
665 /* Mark socket as invalid: */
666 FD_CLR( My_Connections[Idx].sock, &My_Sockets );
667 FD_CLR( My_Connections[Idx].sock, &My_Connects );
668 My_Connections[Idx].sock = NONE;
670 /* If there is still a client, unregister it now */
671 if( c ) Client_Destroy( c, LogMsg, FwdMsg, TRUE );
673 /* Calculate statistics and log information */
674 in_k = (DOUBLE)My_Connections[Idx].bytes_in / 1024;
675 out_k = (DOUBLE)My_Connections[Idx].bytes_out / 1024;
677 if( My_Connections[Idx].options & CONN_ZIP )
679 in_z_k = (DOUBLE)My_Connections[Idx].zip.bytes_in / 1024;
680 out_z_k = (DOUBLE)My_Connections[Idx].zip.bytes_out / 1024;
681 in_p = (INT)(( in_k * 100 ) / in_z_k );
682 out_p = (INT)(( out_k * 100 ) / out_z_k );
683 Log( LOG_INFO, "Connection %d with %s:%d closed (in: %.1fk/%.1fk/%d%%, out: %.1fk/%.1fk/%d%%).", Idx, My_Connections[Idx].host, ntohs( My_Connections[Idx].addr.sin_port ), in_k, in_z_k, in_p, out_k, out_z_k, out_p );
688 Log( LOG_INFO, "Connection %d with %s:%d closed (in: %.1fk, out: %.1fk).", Idx, My_Connections[Idx].host, ntohs( My_Connections[Idx].addr.sin_port ), in_k, out_k );
691 /* Is there a resolver sub-process running? */
692 if( My_Connections[Idx].res_stat )
694 /* Free resolver structures */
695 FD_CLR( My_Connections[Idx].res_stat->pipe[0], &Resolver_FDs );
696 close( My_Connections[Idx].res_stat->pipe[0] );
697 close( My_Connections[Idx].res_stat->pipe[1] );
698 free( My_Connections[Idx].res_stat );
701 /* Servers: Modify time of next connect attempt? */
702 Conf_UnsetServer( Idx );
705 /* Clean up zlib, if link was compressed */
706 if( Conn_Options( Idx ) & CONN_ZIP )
708 inflateEnd( &My_Connections[Idx].zip.in );
709 deflateEnd( &My_Connections[Idx].zip.out );
713 /* Clean up connection structure (=free it) */
714 Init_Conn_Struct( Idx );
719 Conn_SyncServerStruct( VOID )
721 /* Synchronize server structures (connection IDs):
722 * connections <-> configuration */
728 for( i = 0; i < Pool_Size; i++ )
730 /* Established connection? */
731 if( My_Connections[i].sock <= NONE ) continue;
733 /* Server connection? */
734 client = Client_GetFromConn( i );
735 if(( ! client ) || ( Client_Type( client ) != CLIENT_SERVER )) continue;
737 for( c = 0; c < MAX_SERVERS; c++ )
739 /* Configured server? */
740 if( ! Conf_Server[c].host[0] ) continue;
743 if( strcmp( Conf_Server[c].name, Client_ID( client )) == 0 ) Conf_Server[c].conn_id = i;
746 } /* SyncServerStruct */
750 Try_Write( CONN_ID Idx )
752 /* Versuchen, Daten aus dem Schreib-Puffer in den Socket zu
753 * schreiben. TRUE wird geliefert, wenn entweder keine Daten
754 * zum Versenden vorhanden sind oder erfolgreich bearbeitet
755 * werden konnten. Im Fehlerfall wird FALSE geliefert und
756 * die Verbindung geschlossen. */
761 assert( Idx > NONE );
762 assert( My_Connections[Idx].sock > NONE );
764 /* sind ueberhaupt Daten vorhanden? */
766 if(( ! My_Connections[Idx].wdatalen > 0 ) && ( ! My_Connections[Idx].zip.wdatalen )) return TRUE;
768 if( ! My_Connections[Idx].wdatalen > 0 ) return TRUE;
771 /* Timeout initialisieren: 0 Sekunden, also nicht blockieren */
772 tv.tv_sec = 0; tv.tv_usec = 0;
774 FD_ZERO( &write_socket );
775 FD_SET( My_Connections[Idx].sock, &write_socket );
776 if( select( My_Connections[Idx].sock + 1, NULL, &write_socket, NULL, &tv ) == -1 )
781 Log( LOG_ALERT, "Try_Write(): select() failed: %s (con=%d, sock=%d)!", strerror( errno ), Idx, My_Connections[Idx].sock );
782 Conn_Close( Idx, "Server error!", NULL, FALSE );
787 if( FD_ISSET( My_Connections[Idx].sock, &write_socket )) return Handle_Write( Idx );
793 Handle_Read( INT Sock )
795 /* Aktivitaet auf einem Socket verarbeiten:
796 * - neue Clients annehmen,
797 * - Daten von Clients verarbeiten,
798 * - Resolver-Rueckmeldungen annehmen. */
802 assert( Sock > NONE );
804 if( FD_ISSET( Sock, &My_Listeners ))
806 /* es ist einer unserer Listener-Sockets: es soll
807 * also eine neue Verbindung aufgebaut werden. */
809 New_Connection( Sock );
811 else if( FD_ISSET( Sock, &Resolver_FDs ))
813 /* Rueckmeldung von einem Resolver Sub-Prozess */
815 Read_Resolver_Result( Sock );
819 /* Ein Client Socket: entweder ein User oder Server */
821 idx = Socket2Index( Sock );
822 if( idx > NONE ) Read_Request( idx );
828 Handle_Write( CONN_ID Idx )
830 /* Daten aus Schreibpuffer versenden bzw. Connection aufbauen */
836 assert( Idx > NONE );
837 assert( My_Connections[Idx].sock > NONE );
839 if( FD_ISSET( My_Connections[Idx].sock, &My_Connects ))
841 /* es soll nichts geschrieben werden, sondern ein
842 * connect() hat ein Ergebnis geliefert */
844 FD_CLR( My_Connections[Idx].sock, &My_Connects );
846 /* Ergebnis des connect() ermitteln */
847 sock_len = sizeof( err );
848 res = getsockopt( My_Connections[Idx].sock, SOL_SOCKET, SO_ERROR, &err, &sock_len );
849 assert( sock_len == sizeof( err ));
851 /* Fehler aufgetreten? */
852 if(( res != 0 ) || ( err != 0 ))
855 if( res != 0 ) Log( LOG_CRIT, "getsockopt (connection %d): %s!", Idx, strerror( errno ));
856 else Log( LOG_CRIT, "Can't connect socket to \"%s:%d\" (connection %d): %s!", My_Connections[Idx].host, Conf_Server[Conf_GetServer( Idx )].port, Idx, strerror( err ));
858 /* Clean up socket, connection and client structures */
859 FD_CLR( My_Connections[Idx].sock, &My_Sockets );
860 c = Client_GetFromConn( Idx );
861 if( c ) Client_DestroyNow( c );
862 close( My_Connections[Idx].sock );
863 Init_Conn_Struct( Idx );
865 /* Bei Server-Verbindungen lasttry-Zeitpunkt auf "jetzt" setzen */
866 Conf_Server[Conf_GetServer( Idx )].lasttry = time( NULL );
867 Conf_UnsetServer( Idx );
872 Log( LOG_DEBUG, "Connection %d with \"%s:%d\" established, now sendig PASS and SERVER ...", Idx, My_Connections[Idx].host, Conf_Server[Conf_GetServer( Idx )].port );
875 /* PASS und SERVER verschicken */
876 Conn_WriteStr( Idx, "PASS %s %s", Conf_Server[Conf_GetServer( Idx )].pwd_out, NGIRCd_ProtoID );
877 return Conn_WriteStr( Idx, "SERVER %s :%s", Conf_ServerName, Conf_ServerInfo );
881 /* Schreibpuffer leer, aber noch Daten im Kompressionsbuffer?
882 * Dann muss dieser nun geflushed werden! */
883 if( My_Connections[Idx].wdatalen == 0 ) Zip_Flush( Idx );
886 assert( My_Connections[Idx].wdatalen > 0 );
888 /* Daten schreiben */
889 len = send( My_Connections[Idx].sock, My_Connections[Idx].wbuf, My_Connections[Idx].wdatalen, 0 );
892 /* Operation haette Socket "nur" blockiert ... */
893 if( errno == EAGAIN ) return TRUE;
895 /* Oops, ein Fehler! */
896 Log( LOG_ERR, "Write error on connection %d (socket %d): %s!", Idx, My_Connections[Idx].sock, strerror( errno ));
897 Conn_Close( Idx, "Write error!", NULL, FALSE );
901 /* Puffer anpassen */
902 My_Connections[Idx].wdatalen -= len;
903 memmove( My_Connections[Idx].wbuf, My_Connections[Idx].wbuf + len, My_Connections[Idx].wdatalen );
910 New_Connection( INT Sock )
912 /* Neue Client-Verbindung von Listen-Socket annehmen und
913 * CLIENT-Struktur anlegen. */
916 struct request_info req;
918 struct sockaddr_in new_addr;
919 INT new_sock, new_sock_len;
926 assert( Sock > NONE );
928 /* Connection auf Listen-Socket annehmen */
929 new_sock_len = sizeof( new_addr );
930 new_sock = accept( Sock, (struct sockaddr *)&new_addr, (socklen_t *)&new_sock_len );
933 Log( LOG_CRIT, "Can't accept connection: %s!", strerror( errno ));
938 /* Validate socket using TCP Wrappers */
939 request_init( &req, RQ_DAEMON, PACKAGE_NAME, RQ_FILE, new_sock, RQ_CLIENT_SIN, &new_addr, NULL );
940 if( ! hosts_access( &req ))
943 Log( deny_severity, "Refused connection from %s (by TCP Wrappers)!", inet_ntoa( new_addr.sin_addr ));
944 Simple_Message( new_sock, "ERROR :Connection refused" );
950 /* Socket initialisieren */
951 Init_Socket( new_sock );
953 /* Check IP-based connection limit */
954 cnt = Count_Connections( new_addr );
955 if(( Conf_MaxConnectionsIP > 0 ) && ( cnt >= Conf_MaxConnectionsIP ))
957 /* Access denied, too many connections from this IP! */
958 Log( LOG_ERR, "Refused connection from %s: too may connections (%ld) from this IP!", inet_ntoa( new_addr.sin_addr ), cnt);
959 Simple_Message( new_sock, "ERROR :Connection refused, too many connections from your IP!" );
964 /* Freie Connection-Struktur suchen */
965 for( idx = 0; idx < Pool_Size; idx++ ) if( My_Connections[idx].sock == NONE ) break;
966 if( idx >= Pool_Size )
968 new_size = Pool_Size + CONNECTION_POOL;
970 /* Im bisherigen Pool wurde keine freie Connection-Struktur mehr gefunden.
971 * Wenn erlaubt und moeglich muss nun der Pool vergroessert werden: */
973 if( Conf_MaxConnections > 0 )
975 /* Es ist ein Limit konfiguriert */
976 if( Pool_Size >= Conf_MaxConnections )
978 /* Mehr Verbindungen duerfen wir leider nicht mehr annehmen ... */
979 Log( LOG_ALERT, "Can't accept connection: limit (%d) reached!", Pool_Size );
980 Simple_Message( new_sock, "ERROR :Connection limit reached" );
984 if( new_size > Conf_MaxConnections ) new_size = Conf_MaxConnections;
986 if( new_size < Pool_Size )
988 Log( LOG_ALERT, "Can't accespt connection: limit (%d) reached -- overflow!", Pool_Size );
989 Simple_Message( new_sock, "ERROR :Connection limit reached" );
994 /* zunaechst realloc() versuchen; wenn das scheitert, malloc() versuchen
995 * und Daten ggf. "haendisch" umkopieren. (Haesslich! Eine wirklich
996 * dynamische Verwaltung waere wohl _deutlich_ besser ...) */
997 ptr = realloc( My_Connections, sizeof( CONNECTION ) * new_size );
1000 /* realloc() ist fehlgeschlagen. Nun malloc() probieren: */
1001 ptr = malloc( sizeof( CONNECTION ) * new_size );
1004 /* Offenbar steht kein weiterer Sepeicher zur Verfuegung :-( */
1005 Log( LOG_EMERG, "Can't allocate memory! [New_Connection]" );
1006 Simple_Message( new_sock, "ERROR: Internal error" );
1011 /* Struktur umkopieren ... */
1012 memcpy( ptr, My_Connections, sizeof( CONNECTION ) * Pool_Size );
1015 Log( LOG_DEBUG, "Allocated new connection pool for %ld items (%ld bytes). [malloc()/memcpy()]", new_size, sizeof( CONNECTION ) * new_size );
1019 else Log( LOG_DEBUG, "Allocated new connection pool for %ld items (%ld bytes). [realloc()]", new_size, sizeof( CONNECTION ) * new_size );
1022 /* Adjust pointer to new block */
1023 My_Connections = ptr;
1025 /* Initialize new items */
1026 for( idx = Pool_Size; idx < new_size; idx++ ) Init_Conn_Struct( idx );
1029 /* Adjust new pool size */
1030 Pool_Size = new_size;
1033 /* Client-Struktur initialisieren */
1034 c = Client_NewLocal( idx, inet_ntoa( new_addr.sin_addr ), CLIENT_UNKNOWN, FALSE );
1037 Log( LOG_ALERT, "Can't accept connection: can't create client structure!" );
1038 Simple_Message( new_sock, "ERROR :Internal error" );
1043 /* Verbindung registrieren */
1044 Init_Conn_Struct( idx );
1045 My_Connections[idx].sock = new_sock;
1046 My_Connections[idx].addr = new_addr;
1048 /* Neuen Socket registrieren */
1049 FD_SET( new_sock, &My_Sockets );
1050 if( new_sock > Conn_MaxFD ) Conn_MaxFD = new_sock;
1052 Log( LOG_INFO, "Accepted connection %d from %s:%d on socket %d.", idx, inet_ntoa( new_addr.sin_addr ), ntohs( new_addr.sin_port), Sock );
1054 /* Hostnamen ermitteln */
1055 strlcpy( My_Connections[idx].host, inet_ntoa( new_addr.sin_addr ), sizeof( My_Connections[idx].host ));
1056 Client_SetHostname( c, My_Connections[idx].host );
1058 s = Resolve_Addr( &new_addr, My_Connections[idx].sock );
1060 s = Resolve_Addr( &new_addr );
1064 /* Sub-Prozess wurde asyncron gestartet */
1065 My_Connections[idx].res_stat = s;
1068 /* Penalty-Zeit setzen */
1069 Conn_SetPenalty( idx, 4 );
1070 } /* New_Connection */
1074 Socket2Index( INT Sock )
1076 /* zum Socket passende Connection suchen */
1080 assert( Sock > NONE );
1082 for( idx = 0; idx < Pool_Size; idx++ ) if( My_Connections[idx].sock == Sock ) break;
1084 if( idx >= Pool_Size )
1086 /* die Connection wurde vermutlich (wegen eines
1087 * Fehlers) bereits wieder abgebaut ... */
1089 Log( LOG_DEBUG, "Socket2Index: can't get connection for socket %d!", Sock );
1094 } /* Socket2Index */
1098 Read_Request( CONN_ID Idx )
1100 /* Daten von Socket einlesen und entsprechend behandeln.
1101 * Tritt ein Fehler auf, so wird der Socket geschlossen. */
1108 assert( Idx > NONE );
1109 assert( My_Connections[Idx].sock > NONE );
1111 /* wenn noch nicht registriert: maximal mit ZREADBUFFER_LEN arbeiten,
1112 * ansonsten koennen Daten ggf. nicht umkopiert werden. */
1113 bsize = READBUFFER_LEN;
1115 c = Client_GetFromConn( Idx );
1116 if(( Client_Type( c ) != CLIENT_USER ) && ( Client_Type( c ) != CLIENT_SERVER ) && ( Client_Type( c ) != CLIENT_SERVICE ) && ( bsize > ZREADBUFFER_LEN )) bsize = ZREADBUFFER_LEN;
1120 if(( bsize - My_Connections[Idx].rdatalen - 1 < 1 ) || ( ZREADBUFFER_LEN - My_Connections[Idx].zip.rdatalen < 1 ))
1122 if( bsize - My_Connections[Idx].rdatalen - 1 < 1 )
1125 /* Der Lesepuffer ist voll */
1126 Log( LOG_ERR, "Read buffer overflow (connection %d): %d bytes!", Idx, My_Connections[Idx].rdatalen );
1127 Conn_Close( Idx, "Read buffer overflow!", NULL, FALSE );
1132 if( My_Connections[Idx].options & CONN_ZIP )
1134 len = recv( My_Connections[Idx].sock, My_Connections[Idx].zip.rbuf + My_Connections[Idx].zip.rdatalen, ( ZREADBUFFER_LEN - My_Connections[Idx].zip.rdatalen ), 0 );
1135 if( len > 0 ) My_Connections[Idx].zip.rdatalen += len;
1140 len = recv( My_Connections[Idx].sock, My_Connections[Idx].rbuf + My_Connections[Idx].rdatalen, bsize - My_Connections[Idx].rdatalen - 1, 0 );
1141 if( len > 0 ) My_Connections[Idx].rdatalen += len;
1146 /* Socket wurde geschlossen */
1147 Log( LOG_INFO, "%s:%d (%s) is closing the connection ...", My_Connections[Idx].host, ntohs( My_Connections[Idx].addr.sin_port), inet_ntoa( My_Connections[Idx].addr.sin_addr ));
1148 Conn_Close( Idx, "Socket closed!", "Client closed connection", FALSE );
1154 /* Operation haette Socket "nur" blockiert ... */
1155 if( errno == EAGAIN ) return;
1157 /* Fehler beim Lesen */
1158 Log( LOG_ERR, "Read error on connection %d (socket %d): %s!", Idx, My_Connections[Idx].sock, strerror( errno ));
1159 Conn_Close( Idx, "Read error!", "Client closed connection", FALSE );
1163 /* Connection-Statistik aktualisieren */
1164 My_Connections[Idx].bytes_in += len;
1166 /* Timestamp aktualisieren */
1167 My_Connections[Idx].lastdata = time( NULL );
1169 Handle_Buffer( Idx );
1170 } /* Read_Request */
1174 Handle_Buffer( CONN_ID Idx )
1176 /* Daten im Lese-Puffer einer Verbindung verarbeiten.
1177 * Wurde ein Request verarbeitet, so wird TRUE geliefert,
1178 * ansonsten FALSE (auch bei Fehlern). */
1185 BOOLEAN action, result;
1194 if( My_Connections[Idx].delaytime > time( NULL )) return result;
1197 /* ggf. noch unkomprimiete Daten weiter entpacken */
1198 if( My_Connections[Idx].options & CONN_ZIP )
1200 if( ! Unzip_Buffer( Idx )) return FALSE;
1204 if( My_Connections[Idx].rdatalen < 1 ) break;
1206 /* Eine komplette Anfrage muss mit CR+LF enden, vgl.
1207 * RFC 2812. Haben wir eine? */
1208 My_Connections[Idx].rbuf[My_Connections[Idx].rdatalen] = '\0';
1209 ptr = strstr( My_Connections[Idx].rbuf, "\r\n" );
1211 if( ptr ) delta = 2;
1215 /* Nicht RFC-konforme Anfrage mit nur CR oder LF? Leider
1216 * machen soetwas viele Clients, u.a. "mIRC" :-( */
1217 ptr1 = strchr( My_Connections[Idx].rbuf, '\r' );
1218 ptr2 = strchr( My_Connections[Idx].rbuf, '\n' );
1220 if( ptr1 && ptr2 ) ptr = ptr1 > ptr2 ? ptr2 : ptr1;
1221 else if( ptr1 ) ptr = ptr1;
1222 else if( ptr2 ) ptr = ptr2;
1229 /* Ende der Anfrage wurde gefunden */
1231 len = ( ptr - My_Connections[Idx].rbuf ) + delta;
1232 if( len > ( COMMAND_LEN - 1 ))
1234 /* Eine Anfrage darf(!) nicht laenger als 512 Zeichen
1235 * (incl. CR+LF!) werden; vgl. RFC 2812. Wenn soetwas
1236 * empfangen wird, wird der Client disconnectiert. */
1237 Log( LOG_ERR, "Request too long (connection %d): %d bytes (max. %d expected)!", Idx, My_Connections[Idx].rdatalen, COMMAND_LEN - 1 );
1238 Conn_Close( Idx, NULL, "Request too long", TRUE );
1243 /* merken, ob Stream bereits komprimiert wird */
1244 old_z = My_Connections[Idx].options & CONN_ZIP;
1249 /* Es wurde ein Request gelesen */
1250 My_Connections[Idx].msg_in++;
1251 if( ! Parse_Request( Idx, My_Connections[Idx].rbuf )) return FALSE;
1255 /* Puffer anpassen */
1256 My_Connections[Idx].rdatalen -= len;
1257 memmove( My_Connections[Idx].rbuf, My_Connections[Idx].rbuf + len, My_Connections[Idx].rdatalen );
1260 if(( ! old_z ) && ( My_Connections[Idx].options & CONN_ZIP ) && ( My_Connections[Idx].rdatalen > 0 ))
1262 /* Mit dem letzten Befehl wurde Socket-Kompression aktiviert.
1263 * Evtl. schon vom Socket gelesene Daten in den Unzip-Puffer
1264 * umkopieren, damit diese nun zunaechst entkomprimiert werden */
1266 if( My_Connections[Idx].rdatalen > ZREADBUFFER_LEN )
1268 /* Hupsa! Soviel Platz haben wir aber gar nicht! */
1269 Log( LOG_ALERT, "Can't move read buffer: No space left in unzip buffer (need %d bytes)!", My_Connections[Idx].rdatalen );
1272 memcpy( My_Connections[Idx].zip.rbuf, My_Connections[Idx].rbuf, My_Connections[Idx].rdatalen );
1273 My_Connections[Idx].zip.rdatalen = My_Connections[Idx].rdatalen;
1274 My_Connections[Idx].rdatalen = 0;
1276 Log( LOG_DEBUG, "Moved already received data (%d bytes) to uncompression buffer.", My_Connections[Idx].zip.rdatalen );
1283 if( action ) result = TRUE;
1287 } /* Handle_Buffer */
1291 Check_Connections( VOID )
1293 /* Pruefen, ob Verbindungen noch "alive" sind. Ist dies
1294 * nicht der Fall, zunaechst PING-PONG spielen und, wenn
1295 * auch das nicht "hilft", Client disconnectieren. */
1300 for( i = 0; i < Pool_Size; i++ )
1302 if( My_Connections[i].sock == NONE ) continue;
1304 c = Client_GetFromConn( i );
1305 if( c && (( Client_Type( c ) == CLIENT_USER ) || ( Client_Type( c ) == CLIENT_SERVER ) || ( Client_Type( c ) == CLIENT_SERVICE )))
1307 /* verbundener User, Server oder Service */
1308 if( My_Connections[i].lastping > My_Connections[i].lastdata )
1310 /* es wurde bereits ein PING gesendet */
1311 if( My_Connections[i].lastping < time( NULL ) - Conf_PongTimeout )
1315 Log( LOG_DEBUG, "Connection %d: Ping timeout: %d seconds.", i, Conf_PongTimeout );
1317 Conn_Close( i, NULL, "Ping timeout", TRUE );
1320 else if( My_Connections[i].lastdata < time( NULL ) - Conf_PingTimeout )
1322 /* es muss ein PING gesendet werden */
1324 Log( LOG_DEBUG, "Connection %d: sending PING ...", i );
1326 My_Connections[i].lastping = time( NULL );
1327 Conn_WriteStr( i, "PING :%s", Client_ID( Client_ThisServer( )));
1332 /* noch nicht vollstaendig aufgebaute Verbindung */
1333 if( My_Connections[i].lastdata < time( NULL ) - Conf_PingTimeout )
1337 Log( LOG_DEBUG, "Connection %d timed out ...", i );
1339 Conn_Close( i, NULL, "Timeout", FALSE );
1343 } /* Check_Connections */
1347 Check_Servers( VOID )
1349 /* Check if we can establish further server links */
1355 /* Serach all connections, are there results from the resolver? */
1356 for( idx = 0; idx < Pool_Size; idx++ )
1358 if( My_Connections[idx].sock != SERVER_WAIT ) continue;
1361 if( My_Connections[idx].res_stat == NULL ) New_Server( Conf_GetServer( idx ), idx );
1364 /* Check all configured servers */
1365 for( i = 0; i < MAX_SERVERS; i++ )
1367 /* Valid outgoing server which isn't already connected or disabled? */
1368 if(( ! Conf_Server[i].host[0] ) || ( ! Conf_Server[i].port > 0 ) || ( Conf_Server[i].conn_id > NONE ) || ( Conf_Server[i].flags & CONF_SFLAG_DISABLED )) continue;
1370 /* Is there already a connection in this group? */
1371 if( Conf_Server[i].group > NONE )
1373 for( n = 0; n < MAX_SERVERS; n++ )
1375 if( n == i ) continue;
1376 if(( Conf_Server[n].conn_id > NONE ) && ( Conf_Server[n].group == Conf_Server[i].group )) break;
1378 if( n < MAX_SERVERS ) continue;
1381 /* Check last connect attempt? */
1382 if( Conf_Server[i].lasttry > time( NULL ) - Conf_ConnectRetry ) continue;
1384 /* Okay, try to connect now */
1385 Conf_Server[i].lasttry = time( NULL );
1387 /* Search free connection structure */
1388 for( idx = 0; idx < Pool_Size; idx++ ) if( My_Connections[idx].sock == NONE ) break;
1389 if( idx >= Pool_Size )
1391 Log( LOG_ALERT, "Can't establist server connection: connection limit reached (%d)!", Pool_Size );
1395 Log( LOG_DEBUG, "Preparing connection %d for \"%s\" ...", idx, Conf_Server[i].host );
1398 /* Verbindungs-Struktur initialisieren */
1399 Init_Conn_Struct( idx );
1400 My_Connections[idx].sock = SERVER_WAIT;
1401 Conf_Server[i].conn_id = idx;
1403 /* Resolve Hostname. If this fails, try to use it as an IP address */
1404 strlcpy( Conf_Server[i].ip, Conf_Server[i].host, sizeof( Conf_Server[i].ip ));
1405 strlcpy( My_Connections[idx].host, Conf_Server[i].host, sizeof( My_Connections[idx].host ));
1406 s = Resolve_Name( Conf_Server[i].host );
1409 /* Sub-Prozess wurde asyncron gestartet */
1410 My_Connections[idx].res_stat = s;
1413 } /* Check_Servers */
1417 New_Server( INT Server, CONN_ID Idx )
1419 /* Establish new server link */
1421 struct sockaddr_in new_addr;
1422 struct in_addr inaddr;
1426 assert( Server > NONE );
1427 assert( Idx > NONE );
1429 /* Did we get a valid IP address? */
1430 if( ! Conf_Server[Server].ip[0] )
1432 /* No. Free connection structure and abort: */
1433 Init_Conn_Struct( Idx );
1434 Conf_Server[Server].conn_id = NONE;
1435 Log( LOG_ERR, "Can't connect to \"%s\" (connection %d): ip address unknown!", Conf_Server[Server].host, Idx );
1439 Log( LOG_INFO, "Establishing connection to \"%s\", %s, port %d (connection %d) ... ", Conf_Server[Server].host, Conf_Server[Server].ip, Conf_Server[Server].port, Idx );
1441 #ifdef HAVE_INET_ATON
1442 if( inet_aton( Conf_Server[Server].ip, &inaddr ) == 0 )
1444 memset( &inaddr, 0, sizeof( inaddr ));
1445 inaddr.s_addr = inet_addr( Conf_Server[Server].ip );
1446 if( inaddr.s_addr == (unsigned)-1 )
1449 /* Can't convert IP address */
1450 Init_Conn_Struct( Idx );
1451 Conf_Server[Server].conn_id = NONE;
1452 Log( LOG_ERR, "Can't connect to \"%s\" (connection %d): can't convert ip address %s!", Conf_Server[Server].host, Idx, Conf_Server[Server].ip );
1456 memset( &new_addr, 0, sizeof( new_addr ));
1457 new_addr.sin_family = AF_INET;
1458 new_addr.sin_addr = inaddr;
1459 new_addr.sin_port = htons( Conf_Server[Server].port );
1461 new_sock = socket( PF_INET, SOCK_STREAM, 0 );
1464 /* Can't create socket */
1465 Init_Conn_Struct( Idx );
1466 Conf_Server[Server].conn_id = NONE;
1467 Log( LOG_CRIT, "Can't create socket: %s!", strerror( errno ));
1471 if( ! Init_Socket( new_sock )) return;
1473 res = connect( new_sock, (struct sockaddr *)&new_addr, sizeof( new_addr ));
1474 if(( res != 0 ) && ( errno != EINPROGRESS ))
1476 /* Can't connect socket */
1477 Log( LOG_CRIT, "Can't connect socket: %s!", strerror( errno ));
1479 Init_Conn_Struct( Idx );
1480 Conf_Server[Server].conn_id = NONE;
1484 /* Client-Struktur initialisieren */
1485 c = Client_NewLocal( Idx, inet_ntoa( new_addr.sin_addr ), CLIENT_UNKNOWNSERVER, FALSE );
1488 /* Can't create new client structure */
1490 Init_Conn_Struct( Idx );
1491 Conf_Server[Server].conn_id = NONE;
1492 Log( LOG_ALERT, "Can't establish connection: can't create client structure!" );
1495 Client_SetIntroducer( c, c );
1496 Client_SetToken( c, TOKEN_OUTBOUND );
1498 /* Register connection */
1499 My_Connections[Idx].sock = new_sock;
1500 My_Connections[Idx].addr = new_addr;
1501 strlcpy( My_Connections[Idx].host, Conf_Server[Server].host, sizeof( My_Connections[Idx].host ));
1503 /* Register new socket */
1504 FD_SET( new_sock, &My_Sockets );
1505 FD_SET( new_sock, &My_Connects );
1506 if( new_sock > Conn_MaxFD ) Conn_MaxFD = new_sock;
1509 Log( LOG_DEBUG, "Registered new connection %d on socket %d.", Idx, My_Connections[Idx].sock );
1515 Init_Conn_Struct( CONN_ID Idx )
1517 /* Connection-Struktur initialisieren */
1519 My_Connections[Idx].sock = NONE;
1520 My_Connections[Idx].res_stat = NULL;
1521 My_Connections[Idx].host[0] = '\0';
1522 My_Connections[Idx].rbuf[0] = '\0';
1523 My_Connections[Idx].rdatalen = 0;
1524 My_Connections[Idx].wbuf[0] = '\0';
1525 My_Connections[Idx].wdatalen = 0;
1526 My_Connections[Idx].starttime = time( NULL );
1527 My_Connections[Idx].lastdata = time( NULL );
1528 My_Connections[Idx].lastping = 0;
1529 My_Connections[Idx].lastprivmsg = time( NULL );
1530 My_Connections[Idx].delaytime = 0;
1531 My_Connections[Idx].bytes_in = 0;
1532 My_Connections[Idx].bytes_out = 0;
1533 My_Connections[Idx].msg_in = 0;
1534 My_Connections[Idx].msg_out = 0;
1535 My_Connections[Idx].flag = 0;
1536 My_Connections[Idx].options = 0;
1539 My_Connections[Idx].zip.rbuf[0] = '\0';
1540 My_Connections[Idx].zip.rdatalen = 0;
1541 My_Connections[Idx].zip.wbuf[0] = '\0';
1542 My_Connections[Idx].zip.wdatalen = 0;
1543 My_Connections[Idx].zip.bytes_in = 0;
1544 My_Connections[Idx].zip.bytes_out = 0;
1546 } /* Init_Conn_Struct */
1550 Init_Socket( INT Sock )
1552 /* Socket-Optionen setzen */
1556 #ifdef O_NONBLOCK /* A/UX kennt das nicht? */
1557 if( fcntl( Sock, F_SETFL, O_NONBLOCK ) != 0 )
1559 Log( LOG_CRIT, "Can't enable non-blocking mode: %s!", strerror( errno ));
1564 if( setsockopt( Sock, SOL_SOCKET, SO_REUSEADDR, &on, (socklen_t)sizeof( on )) != 0)
1566 Log( LOG_ERR, "Can't set socket options: %s!", strerror( errno ));
1567 /* dieser Fehler kann ignoriert werden. */
1575 Read_Resolver_Result( INT r_fd )
1577 /* Ergebnis von Resolver Sub-Prozess aus Pipe lesen
1578 * und entsprechende Connection aktualisieren */
1580 CHAR result[HOST_LEN];
1584 FD_CLR( r_fd, &Resolver_FDs );
1586 /* Read result from pipe */
1587 len = read( r_fd, result, HOST_LEN - 1 );
1592 Log( LOG_CRIT, "Resolver: Can't read result: %s!", strerror( errno ));
1597 /* Search associated connection ... */
1598 for( i = 0; i < Pool_Size; i++ )
1600 if(( My_Connections[i].sock != NONE ) && ( My_Connections[i].res_stat ) && ( My_Connections[i].res_stat->pipe[0] == r_fd )) break;
1602 if( i >= Pool_Size )
1604 /* Ops, none found? Probably the connection has already
1608 Log( LOG_DEBUG, "Resolver: Got result for unknown connection!?" );
1614 Log( LOG_DEBUG, "Resolver: %s is \"%s\".", My_Connections[i].host, result );
1618 close( My_Connections[i].res_stat->pipe[0] );
1619 close( My_Connections[i].res_stat->pipe[1] );
1620 free( My_Connections[i].res_stat );
1621 My_Connections[i].res_stat = NULL;
1623 if( My_Connections[i].sock > NONE )
1628 /* Incoming connection: set hostname */
1629 c = Client_GetFromConn( i );
1630 assert( c != NULL );
1631 strlcpy( My_Connections[i].host, result, sizeof( My_Connections[i].host ));
1632 Client_SetHostname( c, result );
1635 ident = strchr( result, 0 );
1638 /* Do we have a result of the IDENT lookup? */
1641 Log( LOG_INFO, "IDENT lookup on connection %ld: \"%s\".", i, ident );
1642 Client_SetUser( c, ident, TRUE );
1644 else Log( LOG_INFO, "IDENT lookup on connection %ld: no result.", i );
1649 /* Outgoing connection (server link!): set IP address */
1650 n = Conf_GetServer( i );
1651 if( n > NONE ) strlcpy( Conf_Server[n].ip, result, sizeof( Conf_Server[n].ip ));
1652 else Log( LOG_ERR, "Got resolver result for non-configured server!?" );
1655 /* Reset penalty time */
1656 Conn_ResetPenalty( i );
1657 } /* Read_Resolver_Result */
1661 Simple_Message( INT Sock, CHAR *Msg )
1663 /* Write "simple" message to socket, without using compression
1664 * or even the connection write buffers. Used e.g. for error
1665 * messages by New_Connection(). */
1667 assert( Sock > NONE );
1668 assert( Msg != NULL );
1670 (VOID)send( Sock, Msg, strlen( Msg ), 0 );
1671 (VOID)send( Sock, "\r\n", 2, 0 );
1672 } /* Simple_Error */
1676 Count_Connections( struct sockaddr_in addr_in )
1681 for( i = 0; i < Pool_Size; i++ )
1683 if(( My_Connections[i].sock > NONE ) && ( My_Connections[i].addr.sin_addr.s_addr == addr_in.sin_addr.s_addr )) cnt++;
1686 } /* Count_Connections */