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 1.162 2005/07/11 20:58:05 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 ));
97 LOCAL int NewListener PARAMS(( const UINT16 Port ));
99 static array My_Listeners;
102 int allow_severity = LOG_INFO;
103 int deny_severity = LOG_ERR;
107 static void cb_clientserver PARAMS((int sock, short what));
110 cb_listen(int sock, short irrelevant)
113 New_Connection( sock );
118 cb_connserver(int sock, short what)
123 CONN_ID idx = Socket2Index( sock );
126 Log(LOG_DEBUG, "cb_connserver wants to write on unknown socket?!");
132 assert( what & IO_WANTWRITE);
134 /* connect() finished, get result. */
135 sock_len = sizeof( err );
136 res = getsockopt( My_Connections[idx].sock, SOL_SOCKET, SO_ERROR, &err, &sock_len );
137 assert( sock_len == sizeof( err ));
139 /* Fehler aufgetreten? */
140 if(( res != 0 ) || ( err != 0 )) {
142 Log( LOG_CRIT, "getsockopt (connection %d): %s!", idx, strerror( errno ));
144 Log( LOG_CRIT, "Can't connect socket to \"%s:%d\" (connection %d): %s!",
145 My_Connections[idx].host, Conf_Server[Conf_GetServer( idx )].port,
146 idx, strerror( err ));
148 /* Clean up socket, connection and client structures */
149 c = Client_GetFromConn( idx );
150 if( c ) Client_DestroyNow( c );
151 io_close( My_Connections[idx].sock );
152 Init_Conn_Struct( idx );
154 /* Bei Server-Verbindungen lasttry-Zeitpunkt auf "jetzt" setzen */
155 Conf_Server[Conf_GetServer( idx )].lasttry = time( NULL );
156 Conf_UnsetServer( idx );
160 Conn_OPTION_DEL( &My_Connections[idx], CONN_ISCONNECTING );
162 Log( LOG_INFO, "Connection %d with \"%s:%d\" established. Now logging in ...", idx,
163 My_Connections[idx].host, Conf_Server[Conf_GetServer( idx )].port );
165 io_event_setcb( My_Connections[idx].sock, cb_clientserver);
166 io_event_add( My_Connections[idx].sock, IO_WANTREAD|IO_WANTWRITE);
168 /* Send PASS and SERVER command to peer */
169 Conn_WriteStr( idx, "PASS %s %s", Conf_Server[Conf_GetServer( idx )].pwd_out, NGIRCd_ProtoID );
170 Conn_WriteStr( idx, "SERVER %s :%s", Conf_ServerName, Conf_ServerInfo );
175 cb_clientserver(int sock, short what)
177 CONN_ID idx = Socket2Index( sock );
180 Log(LOG_WARNING, "WTF: cb_clientserver wants to write on unknown socket?!");
186 if (what & IO_WANTREAD)
189 if (what & IO_WANTWRITE)
195 FreeRes_stat( CONNECTION *c )
198 assert( c->res_stat != NULL );
200 if (!c->res_stat) return;
202 io_close( c->res_stat->pipe[0] );
212 /* Modul initialisieren: statische Strukturen "ausnullen". */
216 /* Speicher fuer Verbindungs-Pool anfordern */
217 Pool_Size = CONNECTION_POOL;
218 if( Conf_MaxConnections > 0 )
220 /* konfiguriertes Limit beachten */
221 if( Pool_Size > Conf_MaxConnections ) Pool_Size = Conf_MaxConnections;
223 My_Connections = (CONNECTION *) calloc( Pool_Size, sizeof( CONNECTION ) );
224 if( ! My_Connections )
226 /* Speicher konnte nicht alloziert werden! */
227 Log( LOG_EMERG, "Can't allocate memory! [Conn_Init]" );
231 Log( LOG_DEBUG, "Allocated connection pool for %d items (%ld bytes).", Pool_Size, sizeof( CONNECTION ) * Pool_Size );
234 array_free( &My_Listeners );
236 /* Groesster File-Descriptor fuer select() */
239 /* Connection-Struktur initialisieren */
240 for( i = 0; i < Pool_Size; i++ ) Init_Conn_Struct( i );
242 /* Global write counter */
250 /* Modul abmelden: alle noch offenen Connections
251 * schliessen und freigeben. */
256 Log( LOG_DEBUG, "Shutting down all connections ..." );
259 Conn_ExitListeners();
261 /* Sockets schliessen */
262 for( idx = 0; idx < Pool_Size; idx++ ) {
263 if( My_Connections[idx].sock > NONE ) {
264 Conn_Close( idx, NULL, NGIRCd_SignalRestart ?
265 "Server going down (restarting)":"Server going down", true );
270 free( My_Connections );
271 My_Connections = NULL;
273 io_library_shutdown();
278 Conn_InitListeners( void )
280 /* Initialize ports on which the server should accept connections */
285 if (!io_library_init(CONNECTION_POOL)) {
286 Log(LOG_EMERG, "Cannot initialize IO routines: %s", strerror(errno));
291 for( i = 0; i < Conf_ListenPorts_Count; i++ ) {
292 fd = NewListener( Conf_ListenPorts[i] );
294 Log( LOG_ERR, "Can't listen on port %u!", (unsigned int) Conf_ListenPorts[i] );
297 if (!io_event_create( fd, IO_WANTREAD, cb_listen )) {
298 Log( LOG_ERR, "io_event_create(): Could not add listening fd %d (port %u): %s!",
299 fd, (unsigned int) Conf_ListenPorts[i], strerror(errno));
306 } /* Conn_InitListeners */
310 Conn_ExitListeners( void )
312 /* Close down all listening sockets */
314 unsigned int arraylen;
316 Rendezvous_UnregisterListeners( );
319 arraylen = array_length(&My_Listeners, sizeof (int));
320 Log( LOG_INFO, "Shutting down all listening sockets (%d)...", arraylen );
322 fd = (int*) array_get(&My_Listeners, sizeof (int), arraylen);
326 Log( LOG_DEBUG, "Listening socket %d closed.", *fd );
328 Log( LOG_DEBUG, "array_get pos %d returned NULL", arraylen );
332 array_free(&My_Listeners);
333 } /* Conn_ExitListeners */
337 NewListener( const UINT16 Port )
339 /* Create new listening socket on specified port */
341 struct sockaddr_in addr;
342 struct in_addr inaddr;
345 char name[CLIENT_ID_LEN], *info;
348 /* Server-"Listen"-Socket initialisieren */
349 memset( &addr, 0, sizeof( addr ));
350 memset( &inaddr, 0, sizeof( inaddr ));
351 addr.sin_family = AF_INET;
352 addr.sin_port = htons( Port );
353 if( Conf_ListenAddress[0] )
355 #ifdef HAVE_INET_ATON
356 if( inet_aton( Conf_ListenAddress, &inaddr ) == 0 )
358 inaddr.s_addr = inet_addr( Conf_ListenAddress );
359 if( inaddr.s_addr == (unsigned)-1 )
362 Log( LOG_CRIT, "Can't listen on %s:%u: can't convert ip address %s!", Conf_ListenAddress, Port, Conf_ListenAddress );
366 else inaddr.s_addr = htonl( INADDR_ANY );
367 addr.sin_addr = inaddr;
369 /* Socket erzeugen */
370 sock = socket( PF_INET, SOCK_STREAM, 0);
373 Log( LOG_CRIT, "Can't create socket: %s!", strerror( errno ));
377 if( ! Init_Socket( sock )) return -1;
380 if( bind( sock, (struct sockaddr *)&addr, (socklen_t)sizeof( addr )) != 0 )
382 Log( LOG_CRIT, "Can't bind socket: %s!", strerror( errno ));
387 /* in "listen mode" gehen :-) */
388 if( listen( sock, 10 ) != 0 )
390 Log( LOG_CRIT, "Can't listen on soecket: %s!", strerror( errno ));
395 /* Neuen Listener in Strukturen einfuegen */
396 if (!array_catb( &My_Listeners,(char*) &sock, sizeof(int) )) {
397 Log( LOG_CRIT, "Can't add socket to My_Listeners array: %s!", strerror( errno ));
402 if( Conf_ListenAddress[0]) Log( LOG_INFO, "Now listening on %s:%d (socket %d).", Conf_ListenAddress, Port, sock );
403 else Log( LOG_INFO, "Now listening on 0.0.0.0:%d (socket %d).", Port, sock );
406 /* Get best server description text */
407 if( ! Conf_ServerInfo[0] ) info = Conf_ServerName;
410 /* Use server info string */
412 if( Conf_ServerInfo[0] == '[' )
414 /* Cut off leading hostname part in "[]" */
415 info = strchr( Conf_ServerInfo, ']' );
419 while( *info == ' ' ) info++;
422 if( ! info ) info = Conf_ServerInfo;
425 /* Add port number to description if non-standard */
426 if( Port != 6667 ) snprintf( name, sizeof( name ), "%s (port %u)", info, Port );
427 else strlcpy( name, info, sizeof( name ));
429 /* Register service */
430 Rendezvous_Register( name, MDNS_TYPE, Port );
439 /* "Hauptschleife": Aktive Verbindungen ueberwachen. Folgende Aktionen
440 * werden dabei durchgefuehrt, bis der Server terminieren oder neu
443 * - neue Verbindungen annehmen,
444 * - Server-Verbindungen aufbauen,
445 * - geschlossene Verbindungen loeschen,
446 * - volle Schreibpuffer versuchen zu schreiben,
447 * - volle Lesepuffer versuchen zu verarbeiten,
448 * - Antworten von Resolver Sub-Prozessen annehmen.
451 unsigned int wdatalen;
456 start = time( NULL );
457 while(( ! NGIRCd_SignalQuit ) && ( ! NGIRCd_SignalRestart ))
462 Rendezvous_Handler( );
465 /* Should the configuration be reloaded? */
466 if( NGIRCd_SignalRehash ) NGIRCd_Rehash( );
468 /* Check configured servers and established links */
470 Check_Connections( );
474 /* noch volle Lese-Buffer suchen */
475 for( i = 0; i < Pool_Size; i++ )
477 if(( My_Connections[i].sock > NONE ) && ( array_bytes(&My_Connections[i].rbuf) > 0 ) &&
478 ( My_Connections[i].delaytime < t ))
480 /* Kann aus dem Buffer noch ein Befehl extrahiert werden? */
481 if (Handle_Buffer( i )) timeout = false;
485 /* noch volle Schreib-Puffer suchen */
486 for( i = 0; i < Pool_Size; i++ ) {
487 if ( My_Connections[i].sock <= NONE )
490 wdatalen = array_bytes(&My_Connections[i].wbuf);
493 if (( wdatalen > 0 ) || ( array_bytes(&My_Connections[i].zip.wbuf)> 0 ))
498 /* Socket der Verbindung in Set aufnehmen */
499 io_event_add( My_Connections[i].sock, IO_WANTWRITE );
503 /* von welchen Sockets koennte gelesen werden? */
504 for (i = 0; i < Pool_Size; i++ ) {
505 if ( My_Connections[i].sock <= NONE )
508 if ( My_Connections[i].res_stat ) {
509 /* wait for completion of Resolver Sub-Process */
510 io_event_del( My_Connections[i].sock, IO_WANTREAD );
514 if ( Conn_OPTION_ISSET( &My_Connections[i], CONN_ISCONNECTING ))
515 continue; /* wait for completion of connect() */
517 if( My_Connections[i].delaytime > t ) {
518 /* Fuer die Verbindung ist eine "Penalty-Zeit" gesetzt */
519 io_event_del( My_Connections[i].sock, IO_WANTREAD );
522 io_event_add( My_Connections[i].sock, IO_WANTREAD );
525 /* Timeout initialisieren */
527 if( timeout ) tv.tv_sec = 1;
530 /* Auf Aktivitaet warten */
531 i = io_dispatch( &tv );
532 if (i == -1 && errno != EINTR ) {
533 Log(LOG_EMERG, "Conn_Handler(): io_dispatch(): %s!", strerror(errno));
534 Log(LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME);
539 if( NGIRCd_SignalQuit ) Log( LOG_NOTICE|LOG_snotice, "Server going down NOW!" );
540 else if( NGIRCd_SignalRestart ) Log( LOG_NOTICE|LOG_snotice, "Server restarting NOW!" );
545 * Write a text string into the socket of a connection.
546 * This function automatically appends CR+LF to the string and validates that
547 * the result is a valid IRC message (oversized messages are shortened, for
548 * example). Then it calls the Conn_Write() function to do the actual sending.
549 * @param Idx Index fo the connection.
550 * @param Format Format string, see printf().
551 * @return true on success, false otherwise.
555 Conn_WriteStr( CONN_ID Idx, char *Format, ... )
558 Conn_WriteStr( Idx, Format, va_alist )
564 char buffer[COMMAND_LEN];
568 assert( Idx > NONE );
569 assert( Format != NULL );
572 va_start( ap, Format );
576 if (vsnprintf( buffer, COMMAND_LEN - 2, Format, ap ) >= COMMAND_LEN - 2 ) {
578 * The string that should be written to the socket is longer
579 * than the allowed size of COMMAND_LEN bytes (including both
580 * the CR and LF characters). This can be caused by the
581 * IRC_WriteXXX() functions when the prefix of this server had
582 * to be added to an already "quite long" command line which
583 * has been received from a regular IRC client, for example.
585 * We are not allowed to send such "oversized" messages to
586 * other servers and clients, see RFC 2812 2.3 and 2813 3.3
587 * ("these messages SHALL NOT exceed 512 characters in length,
588 * counting all characters including the trailing CR-LF").
590 * So we have a big problem here: we should send more bytes
591 * to the network than we are allowed to and we don't know
592 * the originator (any more). The "old" behaviour of blaming
593 * the receiver ("next hop") is a bad idea (it could be just
594 * an other server only routing the message!), so the only
595 * option left is to shorten the string and to hope that the
596 * result is still somewhat useful ...
600 strcpy (buffer + sizeof(buffer) - strlen(CUT_TXTSUFFIX) - 2 - 1,
606 Log(LOG_DEBUG, " -> connection %d: '%s'.", Idx, buffer);
609 strlcat( buffer, "\r\n", sizeof( buffer ));
610 ok = Conn_Write( Idx, buffer, strlen( buffer ));
611 My_Connections[Idx].msg_out++;
615 } /* Conn_WriteStr */
619 Conn_Write( CONN_ID Idx, char *Data, unsigned int Len )
621 /* Daten in Socket schreiben. Bei "fatalen" Fehlern wird
622 * der Client disconnectiert und false geliefert. */
624 assert( Idx > NONE );
625 assert( Data != NULL );
628 /* Ist der entsprechende Socket ueberhaupt noch offen? In einem
629 * "Handler-Durchlauf" kann es passieren, dass dem nicht mehr so
630 * ist, wenn einer von mehreren Conn_Write()'s fehlgeschlagen ist.
631 * In diesem Fall wird hier einfach ein Fehler geliefert. */
632 if( My_Connections[Idx].sock <= NONE )
635 Log( LOG_DEBUG, "Skipped write on closed socket (connection %d).", Idx );
640 /* Pruefen, ob im Schreibpuffer genuegend Platz ist. Ziel ist es,
641 * moeglichts viel im Puffer zu haben und _nicht_ gleich alles auf den
642 * Socket zu schreiben (u.a. wg. Komprimierung). */
643 if( array_bytes(&My_Connections[Idx].wbuf) >= WRITEBUFFER_LEN) {
644 /* Der Puffer ist dummerweise voll. Jetzt versuchen, den Puffer
645 * zu schreiben, wenn das nicht klappt, haben wir ein Problem ... */
646 if( ! Handle_Write( Idx )) return false;
648 /* check again: if our writebuf is twice als large as the initial limit: Kill connection */
649 if( array_bytes(&My_Connections[Idx].wbuf) >= (WRITEBUFFER_LEN*2)) {
650 Log( LOG_NOTICE, "Write buffer overflow (connection %d)!", Idx );
651 Conn_Close( Idx, "Write buffer overflow!", NULL, false );
657 if ( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_ZIP )) {
658 /* Daten komprimieren und in Puffer kopieren */
659 if( ! Zip_Buffer( Idx, Data, Len )) return false;
664 /* Daten in Puffer kopieren */
665 if (!array_catb( &My_Connections[Idx].wbuf, Data, Len ))
668 My_Connections[Idx].bytes_out += Len;
671 /* Adjust global write counter */
679 Conn_Close( CONN_ID Idx, char *LogMsg, char *FwdMsg, bool InformClient )
681 /* Close connection. Open pipes of asyncronous resolver
682 * sub-processes are closed down. */
688 double in_z_k, out_z_k;
692 assert( Idx > NONE );
694 /* Is this link already shutting down? */
695 if( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_ISCLOSING )) {
696 /* Conn_Close() has been called recursively for this link;
697 * probabe reason: Handle_Write() failed -- see below. */
699 Log( LOG_DEBUG, "Recursive request to close connection: %d", Idx );
704 assert( My_Connections[Idx].sock > NONE );
706 /* Mark link as "closing" */
707 Conn_OPTION_ADD( &My_Connections[Idx], CONN_ISCLOSING );
709 if( LogMsg ) txt = LogMsg;
711 if( ! txt ) txt = "Reason unknown";
713 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 ));
715 /* Search client, if any */
716 c = Client_GetFromConn( Idx );
718 /* Should the client be informed? */
722 /* Send statistics to client if registered as user: */
723 if(( c != NULL ) && ( Client_Type( c ) == CLIENT_USER ))
725 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 );
729 /* Send ERROR to client (see RFC!) */
730 if( FwdMsg ) Conn_WriteStr( Idx, "ERROR :%s", FwdMsg );
731 else Conn_WriteStr( Idx, "ERROR :Closing connection." );
734 /* Try to write out the write buffer */
735 (void)Handle_Write( Idx );
737 /* Shut down socket */
738 if( ! io_close( My_Connections[Idx].sock ))
740 /* Oops, we can't close the socket!? This is ... ugly! */
741 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 ));
744 /* Mark socket as invalid: */
745 My_Connections[Idx].sock = NONE;
747 /* If there is still a client, unregister it now */
748 if( c ) Client_Destroy( c, LogMsg, FwdMsg, true );
750 /* Calculate statistics and log information */
751 in_k = (double)My_Connections[Idx].bytes_in / 1024;
752 out_k = (double)My_Connections[Idx].bytes_out / 1024;
754 if ( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_ZIP )) {
755 in_z_k = (double)My_Connections[Idx].zip.bytes_in / 1024;
756 out_z_k = (double)My_Connections[Idx].zip.bytes_out / 1024;
757 in_p = (int)(( in_k * 100 ) / in_z_k );
758 out_p = (int)(( out_k * 100 ) / out_z_k );
759 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 );
764 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 );
767 /* Is there a resolver sub-process running? */
768 if( My_Connections[Idx].res_stat )
769 FreeRes_stat( &My_Connections[Idx] );
771 /* Servers: Modify time of next connect attempt? */
772 Conf_UnsetServer( Idx );
775 /* Clean up zlib, if link was compressed */
776 if ( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_ZIP )) {
777 inflateEnd( &My_Connections[Idx].zip.in );
778 deflateEnd( &My_Connections[Idx].zip.out );
779 array_free(&My_Connections[Idx].zip.rbuf);
780 array_free(&My_Connections[Idx].zip.wbuf);
784 array_free(&My_Connections[Idx].rbuf);
785 array_free(&My_Connections[Idx].wbuf);
786 /* Clean up connection structure (=free it) */
787 Init_Conn_Struct( Idx );
790 Log( LOG_DEBUG, "Shutdown of connection %d completed.", Idx );
796 Conn_SyncServerStruct( void )
798 /* Synchronize server structures (connection IDs):
799 * connections <-> configuration */
805 for( i = 0; i < Pool_Size; i++ )
807 /* Established connection? */
808 if( My_Connections[i].sock <= NONE ) continue;
810 /* Server connection? */
811 client = Client_GetFromConn( i );
812 if(( ! client ) || ( Client_Type( client ) != CLIENT_SERVER )) continue;
814 for( c = 0; c < MAX_SERVERS; c++ )
816 /* Configured server? */
817 if( ! Conf_Server[c].host[0] ) continue;
820 if( strcmp( Conf_Server[c].name, Client_ID( client )) == 0 ) Conf_Server[c].conn_id = i;
823 } /* SyncServerStruct */
827 Handle_Write( CONN_ID Idx )
829 /* Daten aus Schreibpuffer versenden bzw. Connection aufbauen */
832 unsigned int wdatalen;
834 Log(LOG_DEBUG, "Handle_Write");
835 assert( Idx > NONE );
836 if ( My_Connections[Idx].sock < 0 ) {
837 Log(LOG_WARNING, "Handle_Write() on closed socket, idx %d", Idx);
840 assert( My_Connections[Idx].sock > NONE );
843 wdatalen = array_bytes(&My_Connections[Idx].wbuf );
845 if(( wdatalen == 0 ) && ( ! array_bytes(&My_Connections[Idx].zip.wbuf))) {
846 io_event_del(My_Connections[Idx].sock, IO_WANTWRITE );
850 /* write buffer empty, but not compression buf? -> flush compression buf. */
851 if( wdatalen == 0 ) Zip_Flush( Idx );
853 if( wdatalen == 0 ) {
854 io_event_del(My_Connections[Idx].sock, IO_WANTWRITE );
859 wdatalen = array_bytes(&My_Connections[Idx].wbuf ); /* Zip_Flush may change wbuf */
860 len = write( My_Connections[Idx].sock, array_start(&My_Connections[Idx].wbuf), wdatalen );
862 if( errno == EAGAIN || errno == EINTR)
865 Log( LOG_ERR, "Write error on connection %d (socket %d): %s!", Idx,
866 My_Connections[Idx].sock, strerror( errno ));
867 Conn_Close( Idx, "Write error!", NULL, false );
871 /* move any data not yet written to beginning */
872 array_moveleft(&My_Connections[Idx].wbuf, 1, len);
879 New_Connection( int Sock )
881 /* Neue Client-Verbindung von Listen-Socket annehmen und
882 * CLIENT-Struktur anlegen. */
885 struct request_info req;
887 struct sockaddr_in new_addr;
888 int new_sock, new_sock_len;
895 assert( Sock > NONE );
896 /* Connection auf Listen-Socket annehmen */
897 new_sock_len = sizeof( new_addr );
898 new_sock = accept( Sock, (struct sockaddr *)&new_addr, (socklen_t *)&new_sock_len );
901 Log( LOG_CRIT, "Can't accept connection: %s!", strerror( errno ));
906 /* Validate socket using TCP Wrappers */
907 request_init( &req, RQ_DAEMON, PACKAGE_NAME, RQ_FILE, new_sock, RQ_CLIENT_SIN, &new_addr, NULL );
909 if( ! hosts_access( &req ))
912 Log( deny_severity, "Refused connection from %s (by TCP Wrappers)!", inet_ntoa( new_addr.sin_addr ));
913 Simple_Message( new_sock, "ERROR :Connection refused" );
919 /* Socket initialisieren */
920 Init_Socket( new_sock );
922 /* Check IP-based connection limit */
923 cnt = Count_Connections( new_addr );
924 if(( Conf_MaxConnectionsIP > 0 ) && ( cnt >= Conf_MaxConnectionsIP ))
926 /* Access denied, too many connections from this IP address! */
927 Log( LOG_ERR, "Refused connection from %s: too may connections (%ld) from this IP address!", inet_ntoa( new_addr.sin_addr ), cnt);
928 Simple_Message( new_sock, "ERROR :Connection refused, too many connections from your IP address!" );
933 /* Freie Connection-Struktur suchen */
934 for( idx = 0; idx < Pool_Size; idx++ ) if( My_Connections[idx].sock == NONE ) break;
935 if( idx >= Pool_Size )
937 new_size = Pool_Size + CONNECTION_POOL;
939 /* Im bisherigen Pool wurde keine freie Connection-Struktur mehr gefunden.
940 * Wenn erlaubt und moeglich muss nun der Pool vergroessert werden: */
942 if( Conf_MaxConnections > 0 )
944 /* Es ist ein Limit konfiguriert */
945 if( Pool_Size >= Conf_MaxConnections )
947 /* Mehr Verbindungen duerfen wir leider nicht mehr annehmen ... */
948 Log( LOG_ALERT, "Can't accept connection: limit (%d) reached!", Pool_Size );
949 Simple_Message( new_sock, "ERROR :Connection limit reached" );
953 if( new_size > Conf_MaxConnections ) new_size = Conf_MaxConnections;
955 if( new_size < Pool_Size )
957 Log( LOG_ALERT, "Can't accept connection: limit (%d) reached -- overflow!", Pool_Size );
958 Simple_Message( new_sock, "ERROR :Connection limit reached" );
963 ptr = (POINTER *)realloc( My_Connections, sizeof( CONNECTION ) * new_size );
966 Log( LOG_EMERG, "Can't allocate memory! [New_Connection]" );
967 Simple_Message( new_sock, "ERROR: Internal error" );
973 Log( LOG_DEBUG, "Allocated new connection pool for %ld items (%ld bytes). [realloc()]", new_size, sizeof( CONNECTION ) * new_size );
976 /* Adjust pointer to new block */
977 My_Connections = (CONNECTION *)ptr;
979 /* Initialize new items */
980 for( idx = Pool_Size; idx < new_size; idx++ ) Init_Conn_Struct( idx );
983 /* Adjust new pool size */
984 Pool_Size = new_size;
987 /* Client-Struktur initialisieren */
988 c = Client_NewLocal( idx, inet_ntoa( new_addr.sin_addr ), CLIENT_UNKNOWN, false );
991 Log( LOG_ALERT, "Can't accept connection: can't create client structure!" );
992 Simple_Message( new_sock, "ERROR :Internal error" );
997 /* Verbindung registrieren */
998 Init_Conn_Struct( idx );
999 My_Connections[idx].sock = new_sock;
1000 My_Connections[idx].addr = new_addr;
1002 /* Neuen Socket registrieren */
1003 io_event_create( new_sock, IO_WANTREAD, cb_clientserver);
1005 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 );
1007 /* Hostnamen ermitteln */
1008 strlcpy( My_Connections[idx].host, inet_ntoa( new_addr.sin_addr ), sizeof( My_Connections[idx].host ));
1009 Client_SetHostname( c, My_Connections[idx].host );
1011 s = Resolve_Addr( &new_addr, My_Connections[idx].sock );
1013 s = Resolve_Addr( &new_addr );
1015 /* resolver process has been started */
1016 if( s ) My_Connections[idx].res_stat = s;
1018 /* Penalty-Zeit setzen */
1019 Conn_SetPenalty( idx, 4 );
1020 } /* New_Connection */
1024 Socket2Index( int Sock )
1026 /* zum Socket passende Connection suchen */
1030 assert( Sock > NONE );
1032 for( idx = 0; idx < Pool_Size; idx++ ) if( My_Connections[idx].sock == Sock ) break;
1034 if( idx >= Pool_Size )
1036 /* die Connection wurde vermutlich (wegen eines
1037 * Fehlers) bereits wieder abgebaut ... */
1039 Log( LOG_DEBUG, "Socket2Index: can't get connection for socket %d!", Sock );
1044 } /* Socket2Index */
1048 Read_Request( CONN_ID Idx )
1050 /* Daten von Socket einlesen und entsprechend behandeln.
1051 * Tritt ein Fehler auf, so wird der Socket geschlossen. */
1060 assert( Idx > NONE );
1061 assert( My_Connections[Idx].sock > NONE );
1063 /* wenn noch nicht registriert: maximal mit ZREADBUFFER_LEN arbeiten,
1064 * ansonsten koennen Daten ggf. nicht umkopiert werden. */
1065 bsize = READBUFFER_LEN;
1067 c = Client_GetFromConn( Idx );
1069 if(( Client_Type( c ) != CLIENT_USER ) && ( Client_Type( c ) != CLIENT_SERVER ) &&
1070 ( Client_Type( c ) != CLIENT_SERVICE ) && ( bsize > ZREADBUFFER_LEN ))
1071 bsize = ZREADBUFFER_LEN;
1073 if (( array_bytes(&My_Connections[Idx].rbuf) >= READBUFFER_LEN ) ||
1074 ( array_bytes(&My_Connections[Idx].zip.rbuf) >= ZREADBUFFER_LEN ))
1076 if ( array_bytes(&My_Connections[Idx].rbuf) >= READBUFFER_LEN )
1079 /* Der Lesepuffer ist voll */
1080 Log( LOG_ERR, "Receive buffer overflow (connection %d): %d bytes!", Idx,
1081 array_bytes(&My_Connections[Idx].rbuf));
1082 Conn_Close( Idx, "Receive buffer overflow!", NULL, false );
1086 len = read( My_Connections[Idx].sock, readbuf, sizeof readbuf -1 );
1088 Log( LOG_INFO, "%s:%d (%s) is closing the connection ...",
1089 My_Connections[Idx].host, ntohs( My_Connections[Idx].addr.sin_port),
1090 inet_ntoa( My_Connections[Idx].addr.sin_addr ));
1091 Conn_Close( Idx, "Socket closed!", "Client closed connection", false );
1095 if( errno == EAGAIN ) return;
1096 Log( LOG_ERR, "Read error on connection %d (socket %d): %s!", Idx,
1097 My_Connections[Idx].sock, strerror( errno ));
1098 Conn_Close( Idx, "Read error!", "Client closed connection", false );
1102 if ( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_ZIP )) {
1103 if (!array_catb( &My_Connections[Idx].zip.rbuf, readbuf, len)) {
1104 Log( LOG_ERR, "Could not append recieved data to zip input buffer (connn %d): %d bytes!", Idx, len );
1105 Conn_Close( Idx, "Receive buffer overflow!", NULL, false );
1112 if (!array_cats( &My_Connections[Idx].rbuf, readbuf )) {
1113 Log( LOG_ERR, "Could not append recieved data to input buffer (connn %d): %d bytes!", Idx, len );
1114 Conn_Close( Idx, "Receive buffer overflow!", NULL, false );
1118 /* Connection-Statistik aktualisieren */
1119 My_Connections[Idx].bytes_in += len;
1121 /* Timestamp aktualisieren */
1122 My_Connections[Idx].lastdata = time( NULL );
1124 Handle_Buffer( Idx );
1125 } /* Read_Request */
1129 Handle_Buffer( CONN_ID Idx )
1131 /* Handle Data in Connections Read-Buffer.
1132 * Return true if a reuqest was handled, false otherwise (also returned on errors). */
1138 unsigned int arraylen;
1139 bool action, result;
1147 if( My_Connections[Idx].delaytime > time( NULL )) return result;
1149 /* unpack compressed data */
1150 if ( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_ZIP ))
1151 if( ! Unzip_Buffer( Idx )) return false;
1154 arraylen = array_bytes(&My_Connections[Idx].rbuf);
1158 if (!array_cat0(&My_Connections[Idx].rbuf)) /* make sure buf is NULL terminated */
1161 array_truncate(&My_Connections[Idx].rbuf, 1, arraylen); /* do not count trailing NULL */
1164 /* A Complete Request end with CR+LF, see RFC 2812. */
1165 ptr = strstr( array_start(&My_Connections[Idx].rbuf), "\r\n" );
1167 if( ptr ) delta = 2; /* complete request */
1170 /* Check for non-RFC-compliant request (only CR or LF)? Unfortunately,
1171 * there are quite a few clients that do this (incl. "mIRC" :-( */
1172 ptr1 = strchr( array_start(&My_Connections[Idx].rbuf), '\r' );
1173 ptr2 = strchr( array_start(&My_Connections[Idx].rbuf), '\n' );
1175 if( ptr1 && ptr2 ) ptr = ptr1 > ptr2 ? ptr2 : ptr1;
1176 else if( ptr1 ) ptr = ptr1;
1177 else if( ptr2 ) ptr = ptr2;
1185 /* End of request found */
1188 len = ( ptr - (char*) array_start(&My_Connections[Idx].rbuf)) + delta;
1190 if( len < 0 || len > ( COMMAND_LEN - 1 )) {
1191 /* Request must not exceed 512 chars (incl. CR+LF!), see
1192 * RFC 2812. Disconnect Client if this happens. */
1193 Log( LOG_ERR, "Request too long (connection %d): %d bytes (max. %d expected)!",
1194 Idx, array_bytes(&My_Connections[Idx].rbuf), COMMAND_LEN - 1 );
1195 Conn_Close( Idx, NULL, "Request too long", true );
1200 /* remember if stream is already compressed */
1201 old_z = My_Connections[Idx].options & CONN_ZIP;
1206 /* A Request was read */
1207 My_Connections[Idx].msg_in++;
1208 if( ! Parse_Request( Idx, (char*)array_start(&My_Connections[Idx].rbuf) )) return false;
1211 array_moveleft(&My_Connections[Idx].rbuf, 1, len);
1213 Log(LOG_DEBUG, "%d byte left in rbuf", array_bytes(&My_Connections[Idx].rbuf));
1218 if(( ! old_z ) && ( My_Connections[Idx].options & CONN_ZIP ) && ( array_bytes(&My_Connections[Idx].rbuf) > 0 ))
1220 /* The last Command activated Socket-Compression.
1221 * Data that was read after that needs to be copied to Unzip-buf
1222 * for decompression */
1223 if( array_bytes(&My_Connections[Idx].rbuf)> ZREADBUFFER_LEN ) {
1225 Log( LOG_ALERT, "Can't move receive buffer: No space left in unzip buffer (need %d bytes)!", array_bytes(&My_Connections[Idx].rbuf ));
1228 if (!array_copy( &My_Connections[Idx].zip.rbuf, &My_Connections[Idx].rbuf ))
1231 array_trunc(&My_Connections[Idx].rbuf);
1233 Log( LOG_DEBUG, "Moved already received data (%d bytes) to uncompression buffer.", array_bytes(&My_Connections[Idx].zip.rbuf));
1237 if( action ) result = true;
1241 } /* Handle_Buffer */
1245 Check_Connections( void )
1247 /* check if connections are alive. if not, play PING-PONG first.
1248 * if this doesn't help either, disconnect client. */
1252 for( i = 0; i < Pool_Size; i++ ) {
1253 if( My_Connections[i].sock == NONE ) continue;
1255 c = Client_GetFromConn( i );
1256 if( c && (( Client_Type( c ) == CLIENT_USER ) || ( Client_Type( c ) == CLIENT_SERVER ) || ( Client_Type( c ) == CLIENT_SERVICE )))
1258 /* connected User, Server or Service */
1259 if( My_Connections[i].lastping > My_Connections[i].lastdata ) {
1260 /* we already sent a ping */
1261 if( My_Connections[i].lastping < time( NULL ) - Conf_PongTimeout ) {
1264 Log( LOG_DEBUG, "Connection %d: Ping timeout: %d seconds.", i, Conf_PongTimeout );
1266 Conn_Close( i, NULL, "Ping timeout", true );
1269 else if( My_Connections[i].lastdata < time( NULL ) - Conf_PingTimeout ) {
1270 /* we need to sent a PING */
1272 Log( LOG_DEBUG, "Connection %d: sending PING ...", i );
1274 My_Connections[i].lastping = time( NULL );
1275 Conn_WriteStr( i, "PING :%s", Client_ID( Client_ThisServer( )));
1280 /* connection is not fully established yet */
1281 if( My_Connections[i].lastdata < time( NULL ) - Conf_PingTimeout )
1285 Log( LOG_DEBUG, "Connection %d timed out ...", i );
1287 Conn_Close( i, NULL, "Timeout", false );
1291 } /* Check_Connections */
1295 Check_Servers( void )
1297 /* Check if we can establish further server links */
1303 /* Serach all connections, are there results from the resolver? */
1304 for( idx = 0; idx < Pool_Size; idx++ )
1306 if( My_Connections[idx].sock != SERVER_WAIT ) continue;
1309 if( My_Connections[idx].res_stat == NULL ) New_Server( Conf_GetServer( idx ), idx );
1312 /* Check all configured servers */
1313 for( i = 0; i < MAX_SERVERS; i++ )
1315 /* Valid outgoing server which isn't already connected or disabled? */
1316 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;
1318 /* Is there already a connection in this group? */
1319 if( Conf_Server[i].group > NONE )
1321 for( n = 0; n < MAX_SERVERS; n++ )
1323 if( n == i ) continue;
1324 if(( Conf_Server[n].conn_id > NONE ) && ( Conf_Server[n].group == Conf_Server[i].group )) break;
1326 if( n < MAX_SERVERS ) continue;
1329 /* Check last connect attempt? */
1330 if( Conf_Server[i].lasttry > time( NULL ) - Conf_ConnectRetry ) continue;
1332 /* Okay, try to connect now */
1333 Conf_Server[i].lasttry = time( NULL );
1335 /* Search free connection structure */
1336 for( idx = 0; idx < Pool_Size; idx++ ) if( My_Connections[idx].sock == NONE ) break;
1337 if( idx >= Pool_Size )
1339 Log( LOG_ALERT, "Can't establist server connection: connection limit reached (%d)!", Pool_Size );
1343 Log( LOG_DEBUG, "Preparing connection %d for \"%s\" ...", idx, Conf_Server[i].host );
1346 /* Verbindungs-Struktur initialisieren */
1347 Init_Conn_Struct( idx );
1348 My_Connections[idx].sock = SERVER_WAIT;
1349 Conf_Server[i].conn_id = idx;
1351 /* Resolve Hostname. If this fails, try to use it as an IP address */
1352 strlcpy( Conf_Server[i].ip, Conf_Server[i].host, sizeof( Conf_Server[i].ip ));
1353 strlcpy( My_Connections[idx].host, Conf_Server[i].host, sizeof( My_Connections[idx].host ));
1354 s = Resolve_Name( Conf_Server[i].host );
1356 /* resolver process running? */
1357 if( s ) My_Connections[idx].res_stat = s;
1359 } /* Check_Servers */
1363 New_Server( int Server, CONN_ID Idx )
1365 /* Establish new server link */
1367 struct sockaddr_in new_addr;
1368 struct in_addr inaddr;
1372 assert( Server > NONE );
1373 assert( Idx > NONE );
1375 /* Did we get a valid IP address? */
1376 if( ! Conf_Server[Server].ip[0] )
1378 /* No. Free connection structure and abort: */
1379 Init_Conn_Struct( Idx );
1380 Conf_Server[Server].conn_id = NONE;
1381 Log( LOG_ERR, "Can't connect to \"%s\" (connection %d): ip address unknown!", Conf_Server[Server].host, Idx );
1385 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 );
1387 #ifdef HAVE_INET_ATON
1388 if( inet_aton( Conf_Server[Server].ip, &inaddr ) == 0 )
1390 memset( &inaddr, 0, sizeof( inaddr ));
1391 inaddr.s_addr = inet_addr( Conf_Server[Server].ip );
1392 if( inaddr.s_addr == (unsigned)-1 )
1395 /* Can't convert IP address */
1396 Init_Conn_Struct( Idx );
1397 Conf_Server[Server].conn_id = NONE;
1398 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 );
1402 memset( &new_addr, 0, sizeof( new_addr ));
1403 new_addr.sin_family = AF_INET;
1404 new_addr.sin_addr = inaddr;
1405 new_addr.sin_port = htons( Conf_Server[Server].port );
1407 new_sock = socket( PF_INET, SOCK_STREAM, 0 );
1408 if ( new_sock < 0 ) {
1409 /* Can't create socket */
1410 Init_Conn_Struct( Idx );
1411 Conf_Server[Server].conn_id = NONE;
1412 Log( LOG_CRIT, "Can't create socket: %s!", strerror( errno ));
1416 if( ! Init_Socket( new_sock )) return;
1418 res = connect( new_sock, (struct sockaddr *)&new_addr, sizeof( new_addr ));
1419 if(( res != 0 ) && ( errno != EINPROGRESS )) {
1420 /* Can't connect socket */
1421 Log( LOG_CRIT, "Can't connect socket: %s!", strerror( errno ));
1423 Init_Conn_Struct( Idx );
1424 Conf_Server[Server].conn_id = NONE;
1428 /* Client-Struktur initialisieren */
1429 c = Client_NewLocal( Idx, inet_ntoa( new_addr.sin_addr ), CLIENT_UNKNOWNSERVER, false );
1431 /* Can't create new client structure */
1433 Init_Conn_Struct( Idx );
1434 Conf_Server[Server].conn_id = NONE;
1435 Log( LOG_ALERT, "Can't establish connection: can't create client structure!" );
1438 Client_SetIntroducer( c, c );
1439 Client_SetToken( c, TOKEN_OUTBOUND );
1441 /* Register connection */
1442 My_Connections[Idx].sock = new_sock;
1443 My_Connections[Idx].addr = new_addr;
1444 strlcpy( My_Connections[Idx].host, Conf_Server[Server].host, sizeof( My_Connections[Idx].host ));
1446 /* Register new socket */
1447 io_event_create( new_sock, IO_WANTWRITE, cb_connserver);
1448 Conn_OPTION_ADD( &My_Connections[Idx], CONN_ISCONNECTING );
1451 Log( LOG_DEBUG, "Registered new connection %d on socket %d.", Idx, My_Connections[Idx].sock );
1457 Init_Conn_Struct( CONN_ID Idx )
1459 time_t now = time( NULL );
1460 /* Connection-Struktur initialisieren */
1462 memset( &My_Connections[Idx], 0, sizeof ( CONNECTION ));
1463 My_Connections[Idx].sock = NONE;
1464 My_Connections[Idx].lastdata = now;
1465 My_Connections[Idx].lastprivmsg = now;
1466 } /* Init_Conn_Struct */
1470 Init_Socket( int Sock )
1472 /* Initialize socket (set options) */
1476 if (!io_setnonblock(Sock)) {
1477 Log( LOG_CRIT, "Can't enable non-blocking mode for socket: %s!", strerror( errno ));
1482 /* Don't block this port after socket shutdown */
1484 if( setsockopt( Sock, SOL_SOCKET, SO_REUSEADDR, &value, (socklen_t)sizeof( value )) != 0 )
1486 Log( LOG_ERR, "Can't set socket option SO_REUSEADDR: %s!", strerror( errno ));
1487 /* ignore this error */
1490 /* Set type of service (TOS) */
1491 #if defined(IP_TOS) && defined(IPTOS_LOWDELAY)
1492 value = IPTOS_LOWDELAY;
1494 Log( LOG_DEBUG, "Setting option IP_TOS on socket %d to IPTOS_LOWDELAY (%d).", Sock, value );
1496 if( setsockopt( Sock, SOL_IP, IP_TOS, &value, (socklen_t)sizeof( value )) != 0 )
1498 Log( LOG_ERR, "Can't set socket option IP_TOS: %s!", strerror( errno ));
1499 /* ignore this error */
1508 void Read_Resolver_Result( int r_fd )
1510 /* Read result of resolver sub-process from pipe and update the
1511 * apropriate connection/client structure(s): hostname and/or
1512 * IDENT user name.*/
1519 Log( LOG_DEBUG, "Resolver: started, fd %d\n", r_fd );
1520 /* Search associated connection ... */
1521 for( i = 0; i < Pool_Size; i++ )
1523 if(( My_Connections[i].sock != NONE )
1524 && ( My_Connections[i].res_stat != NULL )
1525 && ( My_Connections[i].res_stat->pipe[0] == r_fd ))
1528 if( i >= Pool_Size )
1530 /* Ops, none found? Probably the connection has already
1531 * been closed!? We'll ignore that ... */
1534 Log( LOG_DEBUG, "Resolver: Got result for unknown connection!?" );
1539 /* Get resolver structure */
1540 s = My_Connections[i].res_stat;
1541 assert( s != NULL );
1543 /* Read result from pipe */
1544 len = read( r_fd, s->buffer + s->bufpos, sizeof( s->buffer ) - s->bufpos - 1 );
1548 Log( LOG_CRIT, "Resolver: Can't read result: %s!", strerror( errno ));
1549 FreeRes_stat( &My_Connections[i] );
1553 s->buffer[s->bufpos] = '\0';
1555 /* If the result string is incomplete, return to main loop and
1556 * wait until we can read in more bytes. */
1560 ptr = strchr( s->buffer, '\n' );
1565 Log( LOG_DEBUG, "Got result from resolver: \"%s\" (%d bytes), stage %d.", s->buffer, len, s->stage );
1568 /* Okay, we got a complete result: this is a host name for outgoing
1569 * connections and a host name or IDENT user name (if enabled) for
1570 * incoming connections.*/
1571 if( My_Connections[i].sock > NONE )
1573 /* Incoming connection. Search client ... */
1574 c = Client_GetFromConn( i );
1575 assert( c != NULL );
1577 /* Only update client information of unregistered clients */
1578 if( Client_Type( c ) == CLIENT_UNKNOWN )
1581 case 0: /* host name */
1582 strlcpy( My_Connections[i].host, s->buffer, sizeof( My_Connections[i].host ));
1583 Client_SetHostname( c, s->buffer );
1585 /* clean up buffer for IDENT result */
1586 len = strlen( s->buffer ) + 1;
1587 assert((size_t) len <= sizeof( s->buffer ));
1588 memmove( s->buffer, s->buffer + len, sizeof( s->buffer ) - len );
1589 assert(len <= s->bufpos );
1592 /* Don't close pipe and clean up, but
1593 * instead wait for IDENT result */
1597 case 1: /* IDENT user name */
1600 Log( LOG_INFO, "IDENT lookup for connection %ld: \"%s\".", i, s->buffer );
1601 Client_SetUser( c, s->buffer, true );
1603 else Log( LOG_INFO, "IDENT lookup for connection %ld: no result.", i );
1607 Log( LOG_ERR, "Resolver: got result for unknown stage %d!?", s->stage );
1611 else Log( LOG_DEBUG, "Resolver: discarding result for already registered connection %d.", i );
1616 /* Outgoing connection (server link): set the IP address
1617 * so that we can connect to it in the main loop. */
1619 /* Search server ... */
1620 n = Conf_GetServer( i );
1623 strlcpy( Conf_Server[n].ip, s->buffer, sizeof( Conf_Server[n].ip ));
1627 FreeRes_stat( &My_Connections[i] );
1629 /* Reset penalty time */
1630 Conn_ResetPenalty( i );
1631 } /* Read_Resolver_Result */
1635 Simple_Message( int Sock, char *Msg )
1637 char buf[COMMAND_LEN];
1638 /* Write "simple" message to socket, without using compression
1639 * or even the connection write buffers. Used e.g. for error
1640 * messages by New_Connection(). */
1641 assert( Sock > NONE );
1642 assert( Msg != NULL );
1644 strlcpy( buf, Msg, sizeof buf - 2);
1645 strlcat( buf, "\r\n", sizeof buf);
1646 (void)write( Sock, buf, strlen( buf ) );
1647 } /* Simple_Error */
1651 Count_Connections( struct sockaddr_in addr_in )
1656 for( i = 0; i < Pool_Size; i++ )
1658 if(( My_Connections[i].sock > NONE ) && ( My_Connections[i].addr.sin_addr.s_addr == addr_in.sin_addr.s_addr )) cnt++;
1661 } /* Count_Connections */