2 * ngIRCd -- The Next Generation IRC Daemon
3 * Copyright (c)2001-2005 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
20 static char UNUSED id[] = "$Id: conn.c,v 1.159 2005/07/09 21:35:20 fw Exp $";
34 #include <sys/socket.h>
36 #include <sys/types.h>
38 #include <netinet/in.h>
40 #ifdef HAVE_NETINET_IP_H
41 # include <netinet/ip.h>
44 #ifdef HAVE_ARPA_INET_H
45 # include <arpa/inet.h>
47 # define PF_INET AF_INET
51 # include <stdint.h> /* e.g. for Mac OS X */
55 # include <tcpd.h> /* for TCP Wrappers */
70 #include "conn-func.h"
76 # include "rendezvous.h"
82 #define SERVER_WAIT (NONE - 1)
85 LOCAL bool Handle_Write PARAMS(( CONN_ID Idx ));
86 LOCAL void New_Connection PARAMS(( int Sock ));
87 LOCAL CONN_ID Socket2Index PARAMS(( int Sock ));
88 LOCAL void Read_Request PARAMS(( CONN_ID Idx ));
89 LOCAL bool Handle_Buffer PARAMS(( CONN_ID Idx ));
90 LOCAL void Check_Connections PARAMS(( void ));
91 LOCAL void Check_Servers PARAMS(( void ));
92 LOCAL void Init_Conn_Struct PARAMS(( CONN_ID Idx ));
93 LOCAL bool Init_Socket PARAMS(( int Sock ));
94 LOCAL void New_Server PARAMS(( int Server, CONN_ID Idx ));
95 LOCAL void Simple_Message PARAMS(( int Sock, char *Msg ));
96 LOCAL int Count_Connections PARAMS(( struct sockaddr_in addr ));
98 static array My_Listeners;
101 int allow_severity = LOG_INFO;
102 int deny_severity = LOG_ERR;
106 static void cb_clientserver PARAMS((int sock, short what));
109 cb_listen(int sock, short irrelevant)
112 New_Connection( sock );
117 cb_connserver(int sock, short what)
122 CONN_ID idx = Socket2Index( sock );
125 Log(LOG_DEBUG, "cb_connserver wants to write on unknown socket?!");
131 assert( what & IO_WANTWRITE);
133 /* connect() finished, get result. */
134 sock_len = sizeof( err );
135 res = getsockopt( My_Connections[idx].sock, SOL_SOCKET, SO_ERROR, &err, &sock_len );
136 assert( sock_len == sizeof( err ));
138 /* Fehler aufgetreten? */
139 if(( res != 0 ) || ( err != 0 )) {
141 Log( LOG_CRIT, "getsockopt (connection %d): %s!", idx, strerror( errno ));
143 Log( LOG_CRIT, "Can't connect socket to \"%s:%d\" (connection %d): %s!",
144 My_Connections[idx].host, Conf_Server[Conf_GetServer( idx )].port,
145 idx, strerror( err ));
147 /* Clean up socket, connection and client structures */
148 c = Client_GetFromConn( idx );
149 if( c ) Client_DestroyNow( c );
150 io_close( My_Connections[idx].sock );
151 Init_Conn_Struct( idx );
153 /* Bei Server-Verbindungen lasttry-Zeitpunkt auf "jetzt" setzen */
154 Conf_Server[Conf_GetServer( idx )].lasttry = time( NULL );
155 Conf_UnsetServer( idx );
159 Conn_OPTION_DEL( &My_Connections[idx], CONN_ISCONNECTING );
161 Log( LOG_INFO, "Connection %d with \"%s:%d\" established. Now logging in ...", idx,
162 My_Connections[idx].host, Conf_Server[Conf_GetServer( idx )].port );
164 io_event_setcb( My_Connections[idx].sock, cb_clientserver);
165 io_event_add( My_Connections[idx].sock, IO_WANTREAD|IO_WANTWRITE);
167 /* Send PASS and SERVER command to peer */
168 Conn_WriteStr( idx, "PASS %s %s", Conf_Server[Conf_GetServer( idx )].pwd_out, NGIRCd_ProtoID );
169 Conn_WriteStr( idx, "SERVER %s :%s", Conf_ServerName, Conf_ServerInfo );
174 cb_clientserver(int sock, short what)
176 CONN_ID idx = Socket2Index( sock );
179 Log(LOG_WARNING, "WTF: cb_clientserver wants to write on unknown socket?!");
185 if (what & IO_WANTREAD)
188 if (what & IO_WANTWRITE)
194 FreeRes_stat( CONNECTION *c )
197 assert( c->res_stat != NULL );
199 if (!c->res_stat) return;
201 io_close( c->res_stat->pipe[0] );
211 /* Modul initialisieren: statische Strukturen "ausnullen". */
215 /* Speicher fuer Verbindungs-Pool anfordern */
216 Pool_Size = CONNECTION_POOL;
217 if( Conf_MaxConnections > 0 )
219 /* konfiguriertes Limit beachten */
220 if( Pool_Size > Conf_MaxConnections ) Pool_Size = Conf_MaxConnections;
222 My_Connections = (CONNECTION *) calloc( Pool_Size, sizeof( CONNECTION ) );
223 if( ! My_Connections )
225 /* Speicher konnte nicht alloziert werden! */
226 Log( LOG_EMERG, "Can't allocate memory! [Conn_Init]" );
230 Log( LOG_DEBUG, "Allocated connection pool for %d items (%ld bytes).", Pool_Size, sizeof( CONNECTION ) * Pool_Size );
233 array_free( &My_Listeners );
235 /* Groesster File-Descriptor fuer select() */
238 /* Connection-Struktur initialisieren */
239 for( i = 0; i < Pool_Size; i++ ) Init_Conn_Struct( i );
241 /* Global write counter */
249 /* Modul abmelden: alle noch offenen Connections
250 * schliessen und freigeben. */
255 Log( LOG_DEBUG, "Shutting down all connections ..." );
258 Conn_ExitListeners();
260 /* Sockets schliessen */
261 for( idx = 0; idx < Pool_Size; idx++ ) {
262 if( My_Connections[idx].sock > NONE ) {
263 Conn_Close( idx, NULL, NGIRCd_SignalRestart ?
264 "Server going down (restarting)":"Server going down", true );
269 free( My_Connections );
270 My_Connections = NULL;
272 io_library_shutdown();
277 Conn_InitListeners( void )
279 /* Initialize ports on which the server should accept connections */
283 if (!io_library_init(CONNECTION_POOL)) {
284 Log(LOG_EMERG, "Cannot initialize IO routines: %s", strerror(errno));
289 for( i = 0; i < Conf_ListenPorts_Count; i++ )
291 if( Conn_NewListener( Conf_ListenPorts[i] )) created++;
292 else Log( LOG_ERR, "Can't listen on port %u!", (unsigned int) Conf_ListenPorts[i] );
295 } /* Conn_InitListeners */
299 Conn_ExitListeners( void )
301 /* Close down all listening sockets */
303 unsigned int arraylen;
305 Rendezvous_UnregisterListeners( );
308 arraylen = array_length(&My_Listeners, sizeof (int));
309 Log( LOG_INFO, "Shutting down all listening sockets (%d)...", arraylen );
311 fd = (int*) array_get(&My_Listeners, sizeof (int), arraylen);
315 Log( LOG_DEBUG, "Listening socket %d closed.", *fd );
317 Log( LOG_DEBUG, "array_get pos %d returned NULL", arraylen );
321 array_free(&My_Listeners);
322 } /* Conn_ExitListeners */
326 Conn_NewListener( const UINT16 Port )
328 /* Create new listening socket on specified port */
330 struct sockaddr_in addr;
331 struct in_addr inaddr;
334 char name[CLIENT_ID_LEN], *info;
337 /* Server-"Listen"-Socket initialisieren */
338 memset( &addr, 0, sizeof( addr ));
339 memset( &inaddr, 0, sizeof( inaddr ));
340 addr.sin_family = AF_INET;
341 addr.sin_port = htons( Port );
342 if( Conf_ListenAddress[0] )
344 #ifdef HAVE_INET_ATON
345 if( inet_aton( Conf_ListenAddress, &inaddr ) == 0 )
347 inaddr.s_addr = inet_addr( Conf_ListenAddress );
348 if( inaddr.s_addr == (unsigned)-1 )
351 Log( LOG_CRIT, "Can't listen on %s:%u: can't convert ip address %s!", Conf_ListenAddress, Port, Conf_ListenAddress );
355 else inaddr.s_addr = htonl( INADDR_ANY );
356 addr.sin_addr = inaddr;
358 /* Socket erzeugen */
359 sock = socket( PF_INET, SOCK_STREAM, 0);
362 Log( LOG_CRIT, "Can't create socket: %s!", strerror( errno ));
366 if( ! Init_Socket( sock )) return false;
369 if( bind( sock, (struct sockaddr *)&addr, (socklen_t)sizeof( addr )) != 0 )
371 Log( LOG_CRIT, "Can't bind socket: %s!", strerror( errno ));
376 /* in "listen mode" gehen :-) */
377 if( listen( sock, 10 ) != 0 )
379 Log( LOG_CRIT, "Can't listen on soecket: %s!", strerror( errno ));
384 /* Neuen Listener in Strukturen einfuegen */
385 if (!array_catb( &My_Listeners,(char*) &sock, sizeof(int) )) {
386 Log( LOG_CRIT, "Can't add socket to My_Listeners array: %s!", strerror( errno ));
390 io_event_create( sock, IO_WANTREAD, cb_listen );
392 if( Conf_ListenAddress[0]) Log( LOG_INFO, "Now listening on %s:%d (socket %d).", Conf_ListenAddress, Port, sock );
393 else Log( LOG_INFO, "Now listening on 0.0.0.0:%d (socket %d).", Port, sock );
396 /* Get best server description text */
397 if( ! Conf_ServerInfo[0] ) info = Conf_ServerName;
400 /* Use server info string */
402 if( Conf_ServerInfo[0] == '[' )
404 /* Cut off leading hostname part in "[]" */
405 info = strchr( Conf_ServerInfo, ']' );
409 while( *info == ' ' ) info++;
412 if( ! info ) info = Conf_ServerInfo;
415 /* Add port number to description if non-standard */
416 if( Port != 6667 ) snprintf( name, sizeof( name ), "%s (port %u)", info, Port );
417 else strlcpy( name, info, sizeof( name ));
419 /* Register service */
420 Rendezvous_Register( name, MDNS_TYPE, Port );
423 } /* Conn_NewListener */
429 /* "Hauptschleife": Aktive Verbindungen ueberwachen. Folgende Aktionen
430 * werden dabei durchgefuehrt, bis der Server terminieren oder neu
433 * - neue Verbindungen annehmen,
434 * - Server-Verbindungen aufbauen,
435 * - geschlossene Verbindungen loeschen,
436 * - volle Schreibpuffer versuchen zu schreiben,
437 * - volle Lesepuffer versuchen zu verarbeiten,
438 * - Antworten von Resolver Sub-Prozessen annehmen.
441 unsigned int wdatalen;
446 start = time( NULL );
447 while(( ! NGIRCd_SignalQuit ) && ( ! NGIRCd_SignalRestart ))
452 Rendezvous_Handler( );
455 /* Should the configuration be reloaded? */
456 if( NGIRCd_SignalRehash ) NGIRCd_Rehash( );
458 /* Check configured servers and established links */
460 Check_Connections( );
464 /* noch volle Lese-Buffer suchen */
465 for( i = 0; i < Pool_Size; i++ )
467 if(( My_Connections[i].sock > NONE ) && ( array_bytes(&My_Connections[i].rbuf) > 0 ) &&
468 ( My_Connections[i].delaytime < t ))
470 /* Kann aus dem Buffer noch ein Befehl extrahiert werden? */
471 if (Handle_Buffer( i )) timeout = false;
475 /* noch volle Schreib-Puffer suchen */
476 for( i = 0; i < Pool_Size; i++ ) {
477 if ( My_Connections[i].sock <= NONE )
480 wdatalen = array_bytes(&My_Connections[i].wbuf);
483 if (( wdatalen > 0 ) || ( array_bytes(&My_Connections[i].zip.wbuf)> 0 ))
488 /* Socket der Verbindung in Set aufnehmen */
489 io_event_add( My_Connections[i].sock, IO_WANTWRITE );
493 /* von welchen Sockets koennte gelesen werden? */
494 for (i = 0; i < Pool_Size; i++ ) {
495 if ( My_Connections[i].sock <= NONE )
498 if ( My_Connections[i].res_stat ) {
499 /* wait for completion of Resolver Sub-Process */
500 io_event_del( My_Connections[i].sock, IO_WANTREAD );
504 if ( Conn_OPTION_ISSET( &My_Connections[i], CONN_ISCONNECTING ))
505 continue; /* wait for completion of connect() */
507 if( My_Connections[i].delaytime > t ) {
508 /* Fuer die Verbindung ist eine "Penalty-Zeit" gesetzt */
509 io_event_del( My_Connections[i].sock, IO_WANTREAD );
512 io_event_add( My_Connections[i].sock, IO_WANTREAD );
515 /* Timeout initialisieren */
517 if( timeout ) tv.tv_sec = 1;
520 /* Auf Aktivitaet warten */
521 i = io_dispatch( &tv );
522 if (i == -1 && errno != EINTR ) {
523 Log(LOG_EMERG, "Conn_Handler(): io_dispatch(): %s!", strerror(errno));
524 Log(LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME);
529 if( NGIRCd_SignalQuit ) Log( LOG_NOTICE|LOG_snotice, "Server going down NOW!" );
530 else if( NGIRCd_SignalRestart ) Log( LOG_NOTICE|LOG_snotice, "Server restarting NOW!" );
535 * Write a text string into the socket of a connection.
536 * This function automatically appends CR+LF to the string and validates that
537 * the result is a valid IRC message (oversized messages are shortened, for
538 * example). Then it calls the Conn_Write() function to do the actual sending.
539 * @param Idx Index fo the connection.
540 * @param Format Format string, see printf().
541 * @return true on success, false otherwise.
545 Conn_WriteStr( CONN_ID Idx, char *Format, ... )
548 Conn_WriteStr( Idx, Format, va_alist )
554 char buffer[COMMAND_LEN];
558 assert( Idx > NONE );
559 assert( Format != NULL );
562 va_start( ap, Format );
566 if (vsnprintf( buffer, COMMAND_LEN - 2, Format, ap ) >= COMMAND_LEN - 2 ) {
568 * The string that should be written to the socket is longer
569 * than the allowed size of COMMAND_LEN bytes (including both
570 * the CR and LF characters). This can be caused by the
571 * IRC_WriteXXX() functions when the prefix of this server had
572 * to be added to an already "quite long" command line which
573 * has been received from a regular IRC client, for example.
575 * We are not allowed to send such "oversized" messages to
576 * other servers and clients, see RFC 2812 2.3 and 2813 3.3
577 * ("these messages SHALL NOT exceed 512 characters in length,
578 * counting all characters including the trailing CR-LF").
580 * So we have a big problem here: we should send more bytes
581 * to the network than we are allowed to and we don't know
582 * the originator (any more). The "old" behaviour of blaming
583 * the receiver ("next hop") is a bad idea (it could be just
584 * an other server only routing the message!), so the only
585 * option left is to shorten the string and to hope that the
586 * result is still somewhat useful ...
590 strcpy (buffer + sizeof(buffer) - strlen(CUT_TXTSUFFIX) - 2 - 1,
596 Log(LOG_DEBUG, " -> connection %d: '%s'.", Idx, buffer);
599 strlcat( buffer, "\r\n", sizeof( buffer ));
600 ok = Conn_Write( Idx, buffer, strlen( buffer ));
601 My_Connections[Idx].msg_out++;
605 } /* Conn_WriteStr */
609 Conn_Write( CONN_ID Idx, char *Data, unsigned int Len )
611 /* Daten in Socket schreiben. Bei "fatalen" Fehlern wird
612 * der Client disconnectiert und false geliefert. */
614 assert( Idx > NONE );
615 assert( Data != NULL );
618 /* Ist der entsprechende Socket ueberhaupt noch offen? In einem
619 * "Handler-Durchlauf" kann es passieren, dass dem nicht mehr so
620 * ist, wenn einer von mehreren Conn_Write()'s fehlgeschlagen ist.
621 * In diesem Fall wird hier einfach ein Fehler geliefert. */
622 if( My_Connections[Idx].sock <= NONE )
625 Log( LOG_DEBUG, "Skipped write on closed socket (connection %d).", Idx );
630 /* Pruefen, ob im Schreibpuffer genuegend Platz ist. Ziel ist es,
631 * moeglichts viel im Puffer zu haben und _nicht_ gleich alles auf den
632 * Socket zu schreiben (u.a. wg. Komprimierung). */
633 if( array_bytes(&My_Connections[Idx].wbuf) >= WRITEBUFFER_LEN) {
634 /* Der Puffer ist dummerweise voll. Jetzt versuchen, den Puffer
635 * zu schreiben, wenn das nicht klappt, haben wir ein Problem ... */
636 if( ! Handle_Write( Idx )) return false;
638 /* check again: if our writebuf is twice als large as the initial limit: Kill connection */
639 if( array_bytes(&My_Connections[Idx].wbuf) >= (WRITEBUFFER_LEN*2)) {
640 Log( LOG_NOTICE, "Write buffer overflow (connection %d)!", Idx );
641 Conn_Close( Idx, "Write buffer overflow!", NULL, false );
647 if ( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_ZIP )) {
648 /* Daten komprimieren und in Puffer kopieren */
649 if( ! Zip_Buffer( Idx, Data, Len )) return false;
654 /* Daten in Puffer kopieren */
655 if (!array_catb( &My_Connections[Idx].wbuf, Data, Len ))
658 My_Connections[Idx].bytes_out += Len;
661 /* Adjust global write counter */
669 Conn_Close( CONN_ID Idx, char *LogMsg, char *FwdMsg, bool InformClient )
671 /* Close connection. Open pipes of asyncronous resolver
672 * sub-processes are closed down. */
678 double in_z_k, out_z_k;
682 assert( Idx > NONE );
684 /* Is this link already shutting down? */
685 if( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_ISCLOSING )) {
686 /* Conn_Close() has been called recursively for this link;
687 * probabe reason: Handle_Write() failed -- see below. */
689 Log( LOG_DEBUG, "Recursive request to close connection: %d", Idx );
694 assert( My_Connections[Idx].sock > NONE );
696 /* Mark link as "closing" */
697 Conn_OPTION_ADD( &My_Connections[Idx], CONN_ISCLOSING );
699 if( LogMsg ) txt = LogMsg;
701 if( ! txt ) txt = "Reason unknown";
703 Log( LOG_INFO, "Shutting down connection %d (%s) with %s:%d ...", Idx, LogMsg ? LogMsg : FwdMsg, My_Connections[Idx].host, ntohs( My_Connections[Idx].addr.sin_port ));
705 /* Search client, if any */
706 c = Client_GetFromConn( Idx );
708 /* Should the client be informed? */
712 /* Send statistics to client if registered as user: */
713 if(( c != NULL ) && ( Client_Type( c ) == CLIENT_USER ))
715 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 );
719 /* Send ERROR to client (see RFC!) */
720 if( FwdMsg ) Conn_WriteStr( Idx, "ERROR :%s", FwdMsg );
721 else Conn_WriteStr( Idx, "ERROR :Closing connection." );
724 /* Try to write out the write buffer */
725 (void)Handle_Write( Idx );
727 /* Shut down socket */
728 if( ! io_close( My_Connections[Idx].sock ))
730 /* Oops, we can't close the socket!? This is ... ugly! */
731 Log( LOG_CRIT, "Error closing connection %d (socket %d) with %s:%d - %s! (ignored)", Idx, My_Connections[Idx].sock, My_Connections[Idx].host, ntohs( My_Connections[Idx].addr.sin_port), strerror( errno ));
734 /* Mark socket as invalid: */
735 My_Connections[Idx].sock = NONE;
737 /* If there is still a client, unregister it now */
738 if( c ) Client_Destroy( c, LogMsg, FwdMsg, true );
740 /* Calculate statistics and log information */
741 in_k = (double)My_Connections[Idx].bytes_in / 1024;
742 out_k = (double)My_Connections[Idx].bytes_out / 1024;
744 if ( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_ZIP )) {
745 in_z_k = (double)My_Connections[Idx].zip.bytes_in / 1024;
746 out_z_k = (double)My_Connections[Idx].zip.bytes_out / 1024;
747 in_p = (int)(( in_k * 100 ) / in_z_k );
748 out_p = (int)(( out_k * 100 ) / out_z_k );
749 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 );
754 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 );
757 /* Is there a resolver sub-process running? */
758 if( My_Connections[Idx].res_stat )
759 FreeRes_stat( &My_Connections[Idx] );
761 /* Servers: Modify time of next connect attempt? */
762 Conf_UnsetServer( Idx );
765 /* Clean up zlib, if link was compressed */
766 if ( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_ZIP )) {
767 inflateEnd( &My_Connections[Idx].zip.in );
768 deflateEnd( &My_Connections[Idx].zip.out );
769 array_free(&My_Connections[Idx].zip.rbuf);
770 array_free(&My_Connections[Idx].zip.wbuf);
774 array_free(&My_Connections[Idx].rbuf);
775 array_free(&My_Connections[Idx].wbuf);
776 /* Clean up connection structure (=free it) */
777 Init_Conn_Struct( Idx );
780 Log( LOG_DEBUG, "Shutdown of connection %d completed.", Idx );
786 Conn_SyncServerStruct( void )
788 /* Synchronize server structures (connection IDs):
789 * connections <-> configuration */
795 for( i = 0; i < Pool_Size; i++ )
797 /* Established connection? */
798 if( My_Connections[i].sock <= NONE ) continue;
800 /* Server connection? */
801 client = Client_GetFromConn( i );
802 if(( ! client ) || ( Client_Type( client ) != CLIENT_SERVER )) continue;
804 for( c = 0; c < MAX_SERVERS; c++ )
806 /* Configured server? */
807 if( ! Conf_Server[c].host[0] ) continue;
810 if( strcmp( Conf_Server[c].name, Client_ID( client )) == 0 ) Conf_Server[c].conn_id = i;
813 } /* SyncServerStruct */
817 Handle_Write( CONN_ID Idx )
819 /* Daten aus Schreibpuffer versenden bzw. Connection aufbauen */
822 unsigned int wdatalen;
824 Log(LOG_DEBUG, "Handle_Write");
825 assert( Idx > NONE );
826 if ( My_Connections[Idx].sock < 0 ) {
827 Log(LOG_WARNING, "Handle_Write() on closed socket, idx %d", Idx);
830 assert( My_Connections[Idx].sock > NONE );
833 wdatalen = array_bytes(&My_Connections[Idx].wbuf );
835 if(( wdatalen == 0 ) && ( ! array_bytes(&My_Connections[Idx].zip.wbuf))) {
836 io_event_del(My_Connections[Idx].sock, IO_WANTWRITE );
840 /* write buffer empty, but not compression buf? -> flush compression buf. */
841 if( wdatalen == 0 ) Zip_Flush( Idx );
843 if( wdatalen == 0 ) {
844 io_event_del(My_Connections[Idx].sock, IO_WANTWRITE );
849 wdatalen = array_bytes(&My_Connections[Idx].wbuf ); /* Zip_Flush may change wbuf */
850 len = write( My_Connections[Idx].sock, array_start(&My_Connections[Idx].wbuf), wdatalen );
852 if( errno == EAGAIN || errno == EINTR)
855 Log( LOG_ERR, "Write error on connection %d (socket %d): %s!", Idx,
856 My_Connections[Idx].sock, strerror( errno ));
857 Conn_Close( Idx, "Write error!", NULL, false );
861 /* move any data not yet written to beginning */
862 array_moveleft(&My_Connections[Idx].wbuf, 1, len);
869 New_Connection( int Sock )
871 /* Neue Client-Verbindung von Listen-Socket annehmen und
872 * CLIENT-Struktur anlegen. */
875 struct request_info req;
877 struct sockaddr_in new_addr;
878 int new_sock, new_sock_len;
885 assert( Sock > NONE );
886 /* Connection auf Listen-Socket annehmen */
887 new_sock_len = sizeof( new_addr );
888 new_sock = accept( Sock, (struct sockaddr *)&new_addr, (socklen_t *)&new_sock_len );
891 Log( LOG_CRIT, "Can't accept connection: %s!", strerror( errno ));
896 /* Validate socket using TCP Wrappers */
897 request_init( &req, RQ_DAEMON, PACKAGE_NAME, RQ_FILE, new_sock, RQ_CLIENT_SIN, &new_addr, NULL );
899 if( ! hosts_access( &req ))
902 Log( deny_severity, "Refused connection from %s (by TCP Wrappers)!", inet_ntoa( new_addr.sin_addr ));
903 Simple_Message( new_sock, "ERROR :Connection refused" );
909 /* Socket initialisieren */
910 Init_Socket( new_sock );
912 /* Check IP-based connection limit */
913 cnt = Count_Connections( new_addr );
914 if(( Conf_MaxConnectionsIP > 0 ) && ( cnt >= Conf_MaxConnectionsIP ))
916 /* Access denied, too many connections from this IP address! */
917 Log( LOG_ERR, "Refused connection from %s: too may connections (%ld) from this IP address!", inet_ntoa( new_addr.sin_addr ), cnt);
918 Simple_Message( new_sock, "ERROR :Connection refused, too many connections from your IP address!" );
923 /* Freie Connection-Struktur suchen */
924 for( idx = 0; idx < Pool_Size; idx++ ) if( My_Connections[idx].sock == NONE ) break;
925 if( idx >= Pool_Size )
927 new_size = Pool_Size + CONNECTION_POOL;
929 /* Im bisherigen Pool wurde keine freie Connection-Struktur mehr gefunden.
930 * Wenn erlaubt und moeglich muss nun der Pool vergroessert werden: */
932 if( Conf_MaxConnections > 0 )
934 /* Es ist ein Limit konfiguriert */
935 if( Pool_Size >= Conf_MaxConnections )
937 /* Mehr Verbindungen duerfen wir leider nicht mehr annehmen ... */
938 Log( LOG_ALERT, "Can't accept connection: limit (%d) reached!", Pool_Size );
939 Simple_Message( new_sock, "ERROR :Connection limit reached" );
943 if( new_size > Conf_MaxConnections ) new_size = Conf_MaxConnections;
945 if( new_size < Pool_Size )
947 Log( LOG_ALERT, "Can't accept connection: limit (%d) reached -- overflow!", Pool_Size );
948 Simple_Message( new_sock, "ERROR :Connection limit reached" );
953 ptr = (POINTER *)realloc( My_Connections, sizeof( CONNECTION ) * new_size );
956 Log( LOG_EMERG, "Can't allocate memory! [New_Connection]" );
957 Simple_Message( new_sock, "ERROR: Internal error" );
963 Log( LOG_DEBUG, "Allocated new connection pool for %ld items (%ld bytes). [realloc()]", new_size, sizeof( CONNECTION ) * new_size );
966 /* Adjust pointer to new block */
967 My_Connections = (CONNECTION *)ptr;
969 /* Initialize new items */
970 for( idx = Pool_Size; idx < new_size; idx++ ) Init_Conn_Struct( idx );
973 /* Adjust new pool size */
974 Pool_Size = new_size;
977 /* Client-Struktur initialisieren */
978 c = Client_NewLocal( idx, inet_ntoa( new_addr.sin_addr ), CLIENT_UNKNOWN, false );
981 Log( LOG_ALERT, "Can't accept connection: can't create client structure!" );
982 Simple_Message( new_sock, "ERROR :Internal error" );
987 /* Verbindung registrieren */
988 Init_Conn_Struct( idx );
989 My_Connections[idx].sock = new_sock;
990 My_Connections[idx].addr = new_addr;
992 /* Neuen Socket registrieren */
993 io_event_create( new_sock, IO_WANTREAD, cb_clientserver);
995 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 );
997 /* Hostnamen ermitteln */
998 strlcpy( My_Connections[idx].host, inet_ntoa( new_addr.sin_addr ), sizeof( My_Connections[idx].host ));
999 Client_SetHostname( c, My_Connections[idx].host );
1001 s = Resolve_Addr( &new_addr, My_Connections[idx].sock );
1003 s = Resolve_Addr( &new_addr );
1005 /* resolver process has been started */
1006 if( s ) My_Connections[idx].res_stat = s;
1008 /* Penalty-Zeit setzen */
1009 Conn_SetPenalty( idx, 4 );
1010 } /* New_Connection */
1014 Socket2Index( int Sock )
1016 /* zum Socket passende Connection suchen */
1020 assert( Sock > NONE );
1022 for( idx = 0; idx < Pool_Size; idx++ ) if( My_Connections[idx].sock == Sock ) break;
1024 if( idx >= Pool_Size )
1026 /* die Connection wurde vermutlich (wegen eines
1027 * Fehlers) bereits wieder abgebaut ... */
1029 Log( LOG_DEBUG, "Socket2Index: can't get connection for socket %d!", Sock );
1034 } /* Socket2Index */
1038 Read_Request( CONN_ID Idx )
1040 /* Daten von Socket einlesen und entsprechend behandeln.
1041 * Tritt ein Fehler auf, so wird der Socket geschlossen. */
1050 assert( Idx > NONE );
1051 assert( My_Connections[Idx].sock > NONE );
1053 /* wenn noch nicht registriert: maximal mit ZREADBUFFER_LEN arbeiten,
1054 * ansonsten koennen Daten ggf. nicht umkopiert werden. */
1055 bsize = READBUFFER_LEN;
1057 c = Client_GetFromConn( Idx );
1059 if(( Client_Type( c ) != CLIENT_USER ) && ( Client_Type( c ) != CLIENT_SERVER ) &&
1060 ( Client_Type( c ) != CLIENT_SERVICE ) && ( bsize > ZREADBUFFER_LEN ))
1061 bsize = ZREADBUFFER_LEN;
1063 if (( array_bytes(&My_Connections[Idx].rbuf) >= READBUFFER_LEN ) ||
1064 ( array_bytes(&My_Connections[Idx].zip.rbuf) >= ZREADBUFFER_LEN ))
1066 if ( array_bytes(&My_Connections[Idx].rbuf) >= READBUFFER_LEN )
1069 /* Der Lesepuffer ist voll */
1070 Log( LOG_ERR, "Receive buffer overflow (connection %d): %d bytes!", Idx,
1071 array_bytes(&My_Connections[Idx].rbuf));
1072 Conn_Close( Idx, "Receive buffer overflow!", NULL, false );
1076 len = read( My_Connections[Idx].sock, readbuf, sizeof readbuf );
1078 Log( LOG_INFO, "%s:%d (%s) is closing the connection ...",
1079 My_Connections[Idx].host, ntohs( My_Connections[Idx].addr.sin_port),
1080 inet_ntoa( My_Connections[Idx].addr.sin_addr ));
1081 Conn_Close( Idx, "Socket closed!", "Client closed connection", false );
1085 if( errno == EAGAIN ) return;
1086 Log( LOG_ERR, "Read error on connection %d (socket %d): %s!", Idx,
1087 My_Connections[Idx].sock, strerror( errno ));
1088 Conn_Close( Idx, "Read error!", "Client closed connection", false );
1092 if ( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_ZIP )) {
1093 if (!array_catb( &My_Connections[Idx].zip.rbuf, readbuf, len)) {
1094 Log( LOG_ERR, "Could not append recieved data to zip input buffer (connn %d): %d bytes!", Idx, len );
1095 Conn_Close( Idx, "Receive buffer overflow!", NULL, false );
1102 if (!array_cats( &My_Connections[Idx].rbuf, readbuf )) {
1103 Log( LOG_ERR, "Could not append recieved data to input buffer (connn %d): %d bytes!", Idx, len );
1104 Conn_Close( Idx, "Receive buffer overflow!", NULL, false );
1108 /* Connection-Statistik aktualisieren */
1109 My_Connections[Idx].bytes_in += len;
1111 /* Timestamp aktualisieren */
1112 My_Connections[Idx].lastdata = time( NULL );
1114 Handle_Buffer( Idx );
1115 } /* Read_Request */
1119 Handle_Buffer( CONN_ID Idx )
1121 /* Handle Data in Connections Read-Buffer.
1122 * Return true if a reuqest was handled, false otherwise (also returned on errors). */
1128 unsigned int arraylen;
1129 bool action, result;
1137 if( My_Connections[Idx].delaytime > time( NULL )) return result;
1139 /* unpack compressed data */
1140 if ( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_ZIP ))
1141 if( ! Unzip_Buffer( Idx )) return false;
1144 arraylen = array_bytes(&My_Connections[Idx].rbuf);
1148 if (!array_cat0(&My_Connections[Idx].rbuf)) /* make sure buf is NULL terminated */
1151 array_truncate(&My_Connections[Idx].rbuf, 1, arraylen); /* do not count trailing NULL */
1154 /* A Complete Request end with CR+LF, see RFC 2812. */
1155 ptr = strstr( array_start(&My_Connections[Idx].rbuf), "\r\n" );
1157 if( ptr ) delta = 2; /* complete request */
1160 /* Check for non-RFC-compliant request (only CR or LF)? Unfortunately,
1161 * there are quite a few clients that do this (incl. "mIRC" :-( */
1162 ptr1 = strchr( array_start(&My_Connections[Idx].rbuf), '\r' );
1163 ptr2 = strchr( array_start(&My_Connections[Idx].rbuf), '\n' );
1165 if( ptr1 && ptr2 ) ptr = ptr1 > ptr2 ? ptr2 : ptr1;
1166 else if( ptr1 ) ptr = ptr1;
1167 else if( ptr2 ) ptr = ptr2;
1175 /* End of request found */
1178 len = ( ptr - (char*) array_start(&My_Connections[Idx].rbuf)) + delta;
1180 if( len < 0 || len > ( COMMAND_LEN - 1 )) {
1181 /* Request must not exceed 512 chars (incl. CR+LF!), see
1182 * RFC 2812. Disconnect Client if this happens. */
1183 Log( LOG_ERR, "Request too long (connection %d): %d bytes (max. %d expected)!",
1184 Idx, array_bytes(&My_Connections[Idx].rbuf), COMMAND_LEN - 1 );
1185 Conn_Close( Idx, NULL, "Request too long", true );
1190 /* remember if stream is already compressed */
1191 old_z = My_Connections[Idx].options & CONN_ZIP;
1196 /* A Request was read */
1197 My_Connections[Idx].msg_in++;
1198 if( ! Parse_Request( Idx, (char*)array_start(&My_Connections[Idx].rbuf) )) return false;
1201 array_moveleft(&My_Connections[Idx].rbuf, 1, len);
1203 Log(LOG_DEBUG, "%d byte left in rbuf", array_bytes(&My_Connections[Idx].rbuf));
1208 if(( ! old_z ) && ( My_Connections[Idx].options & CONN_ZIP ) && ( array_bytes(&My_Connections[Idx].rbuf) > 0 ))
1210 /* The last Command activated Socket-Compression.
1211 * Data that was read after that needs to be copied to Unzip-buf
1212 * for decompression */
1213 if( array_bytes(&My_Connections[Idx].rbuf)> ZREADBUFFER_LEN ) {
1215 Log( LOG_ALERT, "Can't move receive buffer: No space left in unzip buffer (need %d bytes)!", array_bytes(&My_Connections[Idx].rbuf ));
1218 if (!array_copy( &My_Connections[Idx].zip.rbuf, &My_Connections[Idx].rbuf ))
1221 array_trunc(&My_Connections[Idx].rbuf);
1223 Log( LOG_DEBUG, "Moved already received data (%d bytes) to uncompression buffer.", array_bytes(&My_Connections[Idx].zip.rbuf));
1227 if( action ) result = true;
1231 } /* Handle_Buffer */
1235 Check_Connections( void )
1237 /* check if connections are alive. if not, play PING-PONG first.
1238 * if this doesn't help either, disconnect client. */
1242 for( i = 0; i < Pool_Size; i++ ) {
1243 if( My_Connections[i].sock == NONE ) continue;
1245 c = Client_GetFromConn( i );
1246 if( c && (( Client_Type( c ) == CLIENT_USER ) || ( Client_Type( c ) == CLIENT_SERVER ) || ( Client_Type( c ) == CLIENT_SERVICE )))
1248 /* connected User, Server or Service */
1249 if( My_Connections[i].lastping > My_Connections[i].lastdata ) {
1250 /* we already sent a ping */
1251 if( My_Connections[i].lastping < time( NULL ) - Conf_PongTimeout ) {
1254 Log( LOG_DEBUG, "Connection %d: Ping timeout: %d seconds.", i, Conf_PongTimeout );
1256 Conn_Close( i, NULL, "Ping timeout", true );
1259 else if( My_Connections[i].lastdata < time( NULL ) - Conf_PingTimeout ) {
1260 /* we need to sent a PING */
1262 Log( LOG_DEBUG, "Connection %d: sending PING ...", i );
1264 My_Connections[i].lastping = time( NULL );
1265 Conn_WriteStr( i, "PING :%s", Client_ID( Client_ThisServer( )));
1270 /* connection is not fully established yet */
1271 if( My_Connections[i].lastdata < time( NULL ) - Conf_PingTimeout )
1275 Log( LOG_DEBUG, "Connection %d timed out ...", i );
1277 Conn_Close( i, NULL, "Timeout", false );
1281 } /* Check_Connections */
1285 Check_Servers( void )
1287 /* Check if we can establish further server links */
1293 /* Serach all connections, are there results from the resolver? */
1294 for( idx = 0; idx < Pool_Size; idx++ )
1296 if( My_Connections[idx].sock != SERVER_WAIT ) continue;
1299 if( My_Connections[idx].res_stat == NULL ) New_Server( Conf_GetServer( idx ), idx );
1302 /* Check all configured servers */
1303 for( i = 0; i < MAX_SERVERS; i++ )
1305 /* Valid outgoing server which isn't already connected or disabled? */
1306 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;
1308 /* Is there already a connection in this group? */
1309 if( Conf_Server[i].group > NONE )
1311 for( n = 0; n < MAX_SERVERS; n++ )
1313 if( n == i ) continue;
1314 if(( Conf_Server[n].conn_id > NONE ) && ( Conf_Server[n].group == Conf_Server[i].group )) break;
1316 if( n < MAX_SERVERS ) continue;
1319 /* Check last connect attempt? */
1320 if( Conf_Server[i].lasttry > time( NULL ) - Conf_ConnectRetry ) continue;
1322 /* Okay, try to connect now */
1323 Conf_Server[i].lasttry = time( NULL );
1325 /* Search free connection structure */
1326 for( idx = 0; idx < Pool_Size; idx++ ) if( My_Connections[idx].sock == NONE ) break;
1327 if( idx >= Pool_Size )
1329 Log( LOG_ALERT, "Can't establist server connection: connection limit reached (%d)!", Pool_Size );
1333 Log( LOG_DEBUG, "Preparing connection %d for \"%s\" ...", idx, Conf_Server[i].host );
1336 /* Verbindungs-Struktur initialisieren */
1337 Init_Conn_Struct( idx );
1338 My_Connections[idx].sock = SERVER_WAIT;
1339 Conf_Server[i].conn_id = idx;
1341 /* Resolve Hostname. If this fails, try to use it as an IP address */
1342 strlcpy( Conf_Server[i].ip, Conf_Server[i].host, sizeof( Conf_Server[i].ip ));
1343 strlcpy( My_Connections[idx].host, Conf_Server[i].host, sizeof( My_Connections[idx].host ));
1344 s = Resolve_Name( Conf_Server[i].host );
1346 /* resolver process running? */
1347 if( s ) My_Connections[idx].res_stat = s;
1349 } /* Check_Servers */
1353 New_Server( int Server, CONN_ID Idx )
1355 /* Establish new server link */
1357 struct sockaddr_in new_addr;
1358 struct in_addr inaddr;
1362 assert( Server > NONE );
1363 assert( Idx > NONE );
1365 /* Did we get a valid IP address? */
1366 if( ! Conf_Server[Server].ip[0] )
1368 /* No. Free connection structure and abort: */
1369 Init_Conn_Struct( Idx );
1370 Conf_Server[Server].conn_id = NONE;
1371 Log( LOG_ERR, "Can't connect to \"%s\" (connection %d): ip address unknown!", Conf_Server[Server].host, Idx );
1375 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 );
1377 #ifdef HAVE_INET_ATON
1378 if( inet_aton( Conf_Server[Server].ip, &inaddr ) == 0 )
1380 memset( &inaddr, 0, sizeof( inaddr ));
1381 inaddr.s_addr = inet_addr( Conf_Server[Server].ip );
1382 if( inaddr.s_addr == (unsigned)-1 )
1385 /* Can't convert IP address */
1386 Init_Conn_Struct( Idx );
1387 Conf_Server[Server].conn_id = NONE;
1388 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 );
1392 memset( &new_addr, 0, sizeof( new_addr ));
1393 new_addr.sin_family = AF_INET;
1394 new_addr.sin_addr = inaddr;
1395 new_addr.sin_port = htons( Conf_Server[Server].port );
1397 new_sock = socket( PF_INET, SOCK_STREAM, 0 );
1400 /* Can't create socket */
1401 Init_Conn_Struct( Idx );
1402 Conf_Server[Server].conn_id = NONE;
1403 Log( LOG_CRIT, "Can't create socket: %s!", strerror( errno ));
1407 if( ! Init_Socket( new_sock )) return;
1409 res = connect( new_sock, (struct sockaddr *)&new_addr, sizeof( new_addr ));
1410 if(( res != 0 ) && ( errno != EINPROGRESS ))
1412 /* Can't connect socket */
1413 Log( LOG_CRIT, "Can't connect socket: %s!", strerror( errno ));
1415 Init_Conn_Struct( Idx );
1416 Conf_Server[Server].conn_id = NONE;
1420 /* Client-Struktur initialisieren */
1421 c = Client_NewLocal( Idx, inet_ntoa( new_addr.sin_addr ), CLIENT_UNKNOWNSERVER, false );
1424 /* Can't create new client structure */
1426 Init_Conn_Struct( Idx );
1427 Conf_Server[Server].conn_id = NONE;
1428 Log( LOG_ALERT, "Can't establish connection: can't create client structure!" );
1431 Client_SetIntroducer( c, c );
1432 Client_SetToken( c, TOKEN_OUTBOUND );
1434 /* Register connection */
1435 My_Connections[Idx].sock = new_sock;
1436 My_Connections[Idx].addr = new_addr;
1437 strlcpy( My_Connections[Idx].host, Conf_Server[Server].host, sizeof( My_Connections[Idx].host ));
1439 /* Register new socket */
1440 io_event_create( new_sock, IO_WANTWRITE, cb_connserver);
1441 Conn_OPTION_ADD( &My_Connections[Idx], CONN_ISCONNECTING );
1444 Log( LOG_DEBUG, "Registered new connection %d on socket %d.", Idx, My_Connections[Idx].sock );
1450 Init_Conn_Struct( CONN_ID Idx )
1452 time_t now = time( NULL );
1453 /* Connection-Struktur initialisieren */
1455 memset( &My_Connections[Idx], 0, sizeof ( CONNECTION ));
1456 My_Connections[Idx].sock = NONE;
1457 My_Connections[Idx].lastdata = now;
1458 My_Connections[Idx].lastprivmsg = now;
1459 } /* Init_Conn_Struct */
1463 Init_Socket( int Sock )
1465 /* Initialize socket (set options) */
1469 if (!io_setnonblock(Sock)) {
1470 Log( LOG_CRIT, "Can't enable non-blocking mode for socket: %s!", strerror( errno ));
1475 /* Don't block this port after socket shutdown */
1477 if( setsockopt( Sock, SOL_SOCKET, SO_REUSEADDR, &value, (socklen_t)sizeof( value )) != 0 )
1479 Log( LOG_ERR, "Can't set socket option SO_REUSEADDR: %s!", strerror( errno ));
1480 /* ignore this error */
1483 /* Set type of service (TOS) */
1484 #if defined(IP_TOS) && defined(IPTOS_LOWDELAY)
1485 value = IPTOS_LOWDELAY;
1487 Log( LOG_DEBUG, "Setting option IP_TOS on socket %d to IPTOS_LOWDELAY (%d).", Sock, value );
1489 if( setsockopt( Sock, SOL_IP, IP_TOS, &value, (socklen_t)sizeof( value )) != 0 )
1491 Log( LOG_ERR, "Can't set socket option IP_TOS: %s!", strerror( errno ));
1492 /* ignore this error */
1501 void Read_Resolver_Result( int r_fd )
1503 /* Read result of resolver sub-process from pipe and update the
1504 * apropriate connection/client structure(s): hostname and/or
1505 * IDENT user name.*/
1512 Log( LOG_DEBUG, "Resolver: started, fd %d\n", r_fd );
1513 /* Search associated connection ... */
1514 for( i = 0; i < Pool_Size; i++ )
1516 if(( My_Connections[i].sock != NONE )
1517 && ( My_Connections[i].res_stat != NULL )
1518 && ( My_Connections[i].res_stat->pipe[0] == r_fd ))
1521 if( i >= Pool_Size )
1523 /* Ops, none found? Probably the connection has already
1524 * been closed!? We'll ignore that ... */
1527 Log( LOG_DEBUG, "Resolver: Got result for unknown connection!?" );
1532 /* Get resolver structure */
1533 s = My_Connections[i].res_stat;
1534 assert( s != NULL );
1536 /* Read result from pipe */
1537 len = read( r_fd, s->buffer + s->bufpos, sizeof( s->buffer ) - s->bufpos - 1 );
1541 Log( LOG_CRIT, "Resolver: Can't read result: %s!", strerror( errno ));
1542 FreeRes_stat( &My_Connections[i] );
1546 s->buffer[s->bufpos] = '\0';
1548 /* If the result string is incomplete, return to main loop and
1549 * wait until we can read in more bytes. */
1553 ptr = strchr( s->buffer, '\n' );
1558 Log( LOG_DEBUG, "Got result from resolver: \"%s\" (%d bytes), stage %d.", s->buffer, len, s->stage );
1561 /* Okay, we got a complete result: this is a host name for outgoing
1562 * connections and a host name or IDENT user name (if enabled) for
1563 * incoming connections.*/
1564 if( My_Connections[i].sock > NONE )
1566 /* Incoming connection. Search client ... */
1567 c = Client_GetFromConn( i );
1568 assert( c != NULL );
1570 /* Only update client information of unregistered clients */
1571 if( Client_Type( c ) == CLIENT_UNKNOWN )
1574 case 0: /* host name */
1575 strlcpy( My_Connections[i].host, s->buffer, sizeof( My_Connections[i].host ));
1576 Client_SetHostname( c, s->buffer );
1578 /* clean up buffer for IDENT result */
1579 len = strlen( s->buffer ) + 1;
1580 assert((size_t) len <= sizeof( s->buffer ));
1581 memmove( s->buffer, s->buffer + len, sizeof( s->buffer ) - len );
1582 assert(len <= s->bufpos );
1585 /* Don't close pipe and clean up, but
1586 * instead wait for IDENT result */
1590 case 1: /* IDENT user name */
1593 Log( LOG_INFO, "IDENT lookup for connection %ld: \"%s\".", i, s->buffer );
1594 Client_SetUser( c, s->buffer, true );
1596 else Log( LOG_INFO, "IDENT lookup for connection %ld: no result.", i );
1600 Log( LOG_ERR, "Resolver: got result for unknown stage %d!?", s->stage );
1604 else Log( LOG_DEBUG, "Resolver: discarding result for already registered connection %d.", i );
1609 /* Outgoing connection (server link): set the IP address
1610 * so that we can connect to it in the main loop. */
1612 /* Search server ... */
1613 n = Conf_GetServer( i );
1616 strlcpy( Conf_Server[n].ip, s->buffer, sizeof( Conf_Server[n].ip ));
1620 FreeRes_stat( &My_Connections[i] );
1622 /* Reset penalty time */
1623 Conn_ResetPenalty( i );
1624 } /* Read_Resolver_Result */
1628 Simple_Message( int Sock, char *Msg )
1630 char buf[COMMAND_LEN];
1631 /* Write "simple" message to socket, without using compression
1632 * or even the connection write buffers. Used e.g. for error
1633 * messages by New_Connection(). */
1634 assert( Sock > NONE );
1635 assert( Msg != NULL );
1637 strlcpy( buf, Msg, sizeof buf - 2);
1638 strlcat( buf, "\r\n", sizeof buf);
1639 (void)write( Sock, buf, strlen( buf ) );
1640 } /* Simple_Error */
1644 Count_Connections( struct sockaddr_in addr_in )
1649 for( i = 0; i < Pool_Size; i++ )
1651 if(( My_Connections[i].sock > NONE ) && ( My_Connections[i].addr.sin_addr.s_addr == addr_in.sin_addr.s_addr )) cnt++;
1654 } /* Count_Connections */