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 1.165 2005/07/22 21:31:05 alex 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, UNUSED 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 */
336 /* return new listening port file descriptor or -1 on failure */
338 NewListener( const UINT16 Port )
340 /* Create new listening socket on specified port */
342 struct sockaddr_in addr;
343 struct in_addr inaddr;
346 char name[CLIENT_ID_LEN], *info;
349 /* Server-"Listen"-Socket initialisieren */
350 memset( &addr, 0, sizeof( addr ));
351 memset( &inaddr, 0, sizeof( inaddr ));
352 addr.sin_family = AF_INET;
353 addr.sin_port = htons( Port );
354 if( Conf_ListenAddress[0] )
356 #ifdef HAVE_INET_ATON
357 if( inet_aton( Conf_ListenAddress, &inaddr ) == 0 )
359 inaddr.s_addr = inet_addr( Conf_ListenAddress );
360 if( inaddr.s_addr == (unsigned)-1 )
363 Log( LOG_CRIT, "Can't listen on %s:%u: can't convert ip address %s!", Conf_ListenAddress, Port, Conf_ListenAddress );
367 else inaddr.s_addr = htonl( INADDR_ANY );
368 addr.sin_addr = inaddr;
370 /* Socket erzeugen */
371 sock = socket( PF_INET, SOCK_STREAM, 0);
374 Log( LOG_CRIT, "Can't create socket: %s!", strerror( errno ));
378 if( ! Init_Socket( sock )) return -1;
381 if( bind( sock, (struct sockaddr *)&addr, (socklen_t)sizeof( addr )) != 0 )
383 Log( LOG_CRIT, "Can't bind socket: %s!", strerror( errno ));
388 /* in "listen mode" gehen :-) */
389 if( listen( sock, 10 ) != 0 )
391 Log( LOG_CRIT, "Can't listen on soecket: %s!", strerror( errno ));
396 /* Neuen Listener in Strukturen einfuegen */
397 if (!array_catb( &My_Listeners,(char*) &sock, sizeof(int) )) {
398 Log( LOG_CRIT, "Can't add socket to My_Listeners array: %s!", strerror( errno ));
403 if( Conf_ListenAddress[0]) Log( LOG_INFO, "Now listening on %s:%d (socket %d).", Conf_ListenAddress, Port, sock );
404 else Log( LOG_INFO, "Now listening on 0.0.0.0:%d (socket %d).", Port, sock );
407 /* Get best server description text */
408 if( ! Conf_ServerInfo[0] ) info = Conf_ServerName;
411 /* Use server info string */
413 if( Conf_ServerInfo[0] == '[' )
415 /* Cut off leading hostname part in "[]" */
416 info = strchr( Conf_ServerInfo, ']' );
420 while( *info == ' ' ) info++;
423 if( ! info ) info = Conf_ServerInfo;
426 /* Add port number to description if non-standard */
427 if( Port != 6667 ) snprintf( name, sizeof( name ), "%s (port %u)", info, Port );
428 else strlcpy( name, info, sizeof( name ));
430 /* Register service */
431 Rendezvous_Register( name, MDNS_TYPE, Port );
440 /* "Main Loop.": Loop until a signal (for shutdown or restart) arrives.
441 * Call io_dispatch() to check for read/writeable sockets every second
442 * Wait for status change on pending connections (e.g: when the hostname has been resolved)
443 * check for penalty/timeouts
444 * handle input buffers
447 unsigned int wdatalen;
452 start = time( NULL );
453 while(( ! NGIRCd_SignalQuit ) && ( ! NGIRCd_SignalRestart ))
458 Rendezvous_Handler( );
461 /* Should the configuration be reloaded? */
462 if( NGIRCd_SignalRehash ) NGIRCd_Rehash( );
464 /* Check configured servers and established links */
466 Check_Connections( );
470 /* noch volle Lese-Buffer suchen */
471 for( i = 0; i < Pool_Size; i++ )
473 if(( My_Connections[i].sock > NONE ) && ( array_bytes(&My_Connections[i].rbuf) > 0 ) &&
474 ( My_Connections[i].delaytime < t ))
476 /* Kann aus dem Buffer noch ein Befehl extrahiert werden? */
477 if (Handle_Buffer( i )) timeout = false;
481 /* noch volle Schreib-Puffer suchen */
482 for( i = 0; i < Pool_Size; i++ ) {
483 if ( My_Connections[i].sock <= NONE )
486 wdatalen = array_bytes(&My_Connections[i].wbuf);
489 if (( wdatalen > 0 ) || ( array_bytes(&My_Connections[i].zip.wbuf)> 0 ))
494 /* Socket der Verbindung in Set aufnehmen */
495 io_event_add( My_Connections[i].sock, IO_WANTWRITE );
499 /* von welchen Sockets koennte gelesen werden? */
500 for (i = 0; i < Pool_Size; i++ ) {
501 if ( My_Connections[i].sock <= NONE )
504 if ( My_Connections[i].res_stat ) {
505 /* wait for completion of Resolver Sub-Process */
506 io_event_del( My_Connections[i].sock, IO_WANTREAD );
510 if ( Conn_OPTION_ISSET( &My_Connections[i], CONN_ISCONNECTING ))
511 continue; /* wait for completion of connect() */
513 if( My_Connections[i].delaytime > t ) {
514 /* Fuer die Verbindung ist eine "Penalty-Zeit" gesetzt */
515 io_event_del( My_Connections[i].sock, IO_WANTREAD );
518 io_event_add( My_Connections[i].sock, IO_WANTREAD );
521 /* Timeout initialisieren */
523 if( timeout ) tv.tv_sec = 1;
526 /* Auf Aktivitaet warten */
527 i = io_dispatch( &tv );
528 if (i == -1 && errno != EINTR ) {
529 Log(LOG_EMERG, "Conn_Handler(): io_dispatch(): %s!", strerror(errno));
530 Log(LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME);
535 if( NGIRCd_SignalQuit ) Log( LOG_NOTICE|LOG_snotice, "Server going down NOW!" );
536 else if( NGIRCd_SignalRestart ) Log( LOG_NOTICE|LOG_snotice, "Server restarting NOW!" );
541 * Write a text string into the socket of a connection.
542 * This function automatically appends CR+LF to the string and validates that
543 * the result is a valid IRC message (oversized messages are shortened, for
544 * example). Then it calls the Conn_Write() function to do the actual sending.
545 * @param Idx Index fo the connection.
546 * @param Format Format string, see printf().
547 * @return true on success, false otherwise.
551 Conn_WriteStr( CONN_ID Idx, char *Format, ... )
554 Conn_WriteStr( Idx, Format, va_alist )
560 char buffer[COMMAND_LEN];
564 assert( Idx > NONE );
565 assert( Format != NULL );
568 va_start( ap, Format );
572 if (vsnprintf( buffer, COMMAND_LEN - 2, Format, ap ) >= COMMAND_LEN - 2 ) {
574 * The string that should be written to the socket is longer
575 * than the allowed size of COMMAND_LEN bytes (including both
576 * the CR and LF characters). This can be caused by the
577 * IRC_WriteXXX() functions when the prefix of this server had
578 * to be added to an already "quite long" command line which
579 * has been received from a regular IRC client, for example.
581 * We are not allowed to send such "oversized" messages to
582 * other servers and clients, see RFC 2812 2.3 and 2813 3.3
583 * ("these messages SHALL NOT exceed 512 characters in length,
584 * counting all characters including the trailing CR-LF").
586 * So we have a big problem here: we should send more bytes
587 * to the network than we are allowed to and we don't know
588 * the originator (any more). The "old" behaviour of blaming
589 * the receiver ("next hop") is a bad idea (it could be just
590 * an other server only routing the message!), so the only
591 * option left is to shorten the string and to hope that the
592 * result is still somewhat useful ...
596 strcpy (buffer + sizeof(buffer) - strlen(CUT_TXTSUFFIX) - 2 - 1,
602 Log(LOG_DEBUG, " -> connection %d: '%s'.", Idx, buffer);
605 strlcat( buffer, "\r\n", sizeof( buffer ));
606 ok = Conn_Write( Idx, buffer, strlen( buffer ));
607 My_Connections[Idx].msg_out++;
611 } /* Conn_WriteStr */
615 Conn_Write( CONN_ID Idx, char *Data, unsigned int Len )
617 /* Daten in Socket schreiben. Bei "fatalen" Fehlern wird
618 * der Client disconnectiert und false geliefert. */
620 assert( Idx > NONE );
621 assert( Data != NULL );
624 /* Ist der entsprechende Socket ueberhaupt noch offen? In einem
625 * "Handler-Durchlauf" kann es passieren, dass dem nicht mehr so
626 * ist, wenn einer von mehreren Conn_Write()'s fehlgeschlagen ist.
627 * In diesem Fall wird hier einfach ein Fehler geliefert. */
628 if( My_Connections[Idx].sock <= NONE )
631 Log( LOG_DEBUG, "Skipped write on closed socket (connection %d).", Idx );
636 /* Pruefen, ob im Schreibpuffer genuegend Platz ist. Ziel ist es,
637 * moeglichts viel im Puffer zu haben und _nicht_ gleich alles auf den
638 * Socket zu schreiben (u.a. wg. Komprimierung). */
639 if( array_bytes(&My_Connections[Idx].wbuf) >= WRITEBUFFER_LEN) {
640 /* Der Puffer ist dummerweise voll. Jetzt versuchen, den Puffer
641 * zu schreiben, wenn das nicht klappt, haben wir ein Problem ... */
642 if( ! Handle_Write( Idx )) return false;
644 /* check again: if our writebuf is twice als large as the initial limit: Kill connection */
645 if( array_bytes(&My_Connections[Idx].wbuf) >= (WRITEBUFFER_LEN*2)) {
646 Log( LOG_NOTICE, "Write buffer overflow (connection %d)!", Idx );
647 Conn_Close( Idx, "Write buffer overflow!", NULL, false );
653 if ( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_ZIP )) {
654 /* Daten komprimieren und in Puffer kopieren */
655 if( ! Zip_Buffer( Idx, Data, Len )) return false;
660 /* Daten in Puffer kopieren */
661 if (!array_catb( &My_Connections[Idx].wbuf, Data, Len ))
664 My_Connections[Idx].bytes_out += Len;
667 /* Adjust global write counter */
675 Conn_Close( CONN_ID Idx, char *LogMsg, char *FwdMsg, bool InformClient )
677 /* Close connection. Open pipes of asyncronous resolver
678 * sub-processes are closed down. */
684 double in_z_k, out_z_k;
688 assert( Idx > NONE );
690 /* Is this link already shutting down? */
691 if( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_ISCLOSING )) {
692 /* Conn_Close() has been called recursively for this link;
693 * probabe reason: Handle_Write() failed -- see below. */
695 Log( LOG_DEBUG, "Recursive request to close connection: %d", Idx );
700 assert( My_Connections[Idx].sock > NONE );
702 /* Mark link as "closing" */
703 Conn_OPTION_ADD( &My_Connections[Idx], CONN_ISCLOSING );
705 if( LogMsg ) txt = LogMsg;
707 if( ! txt ) txt = "Reason unknown";
709 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 ));
711 /* Search client, if any */
712 c = Client_GetFromConn( Idx );
714 /* Should the client be informed? */
718 /* Send statistics to client if registered as user: */
719 if(( c != NULL ) && ( Client_Type( c ) == CLIENT_USER ))
721 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 );
725 /* Send ERROR to client (see RFC!) */
726 if( FwdMsg ) Conn_WriteStr( Idx, "ERROR :%s", FwdMsg );
727 else Conn_WriteStr( Idx, "ERROR :Closing connection." );
730 /* Try to write out the write buffer */
731 (void)Handle_Write( Idx );
733 /* Shut down socket */
734 if( ! io_close( My_Connections[Idx].sock ))
736 /* Oops, we can't close the socket!? This is ... ugly! */
737 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 ));
740 /* Mark socket as invalid: */
741 My_Connections[Idx].sock = NONE;
743 /* If there is still a client, unregister it now */
744 if( c ) Client_Destroy( c, LogMsg, FwdMsg, true );
746 /* Calculate statistics and log information */
747 in_k = (double)My_Connections[Idx].bytes_in / 1024;
748 out_k = (double)My_Connections[Idx].bytes_out / 1024;
750 if ( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_ZIP )) {
751 in_z_k = (double)My_Connections[Idx].zip.bytes_in / 1024;
752 out_z_k = (double)My_Connections[Idx].zip.bytes_out / 1024;
753 in_p = (int)(( in_k * 100 ) / in_z_k );
754 out_p = (int)(( out_k * 100 ) / out_z_k );
755 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 );
760 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 );
763 /* Is there a resolver sub-process running? */
764 if( My_Connections[Idx].res_stat )
765 FreeRes_stat( &My_Connections[Idx] );
767 /* Servers: Modify time of next connect attempt? */
768 Conf_UnsetServer( Idx );
771 /* Clean up zlib, if link was compressed */
772 if ( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_ZIP )) {
773 inflateEnd( &My_Connections[Idx].zip.in );
774 deflateEnd( &My_Connections[Idx].zip.out );
775 array_free(&My_Connections[Idx].zip.rbuf);
776 array_free(&My_Connections[Idx].zip.wbuf);
780 array_free(&My_Connections[Idx].rbuf);
781 array_free(&My_Connections[Idx].wbuf);
782 /* Clean up connection structure (=free it) */
783 Init_Conn_Struct( Idx );
786 Log( LOG_DEBUG, "Shutdown of connection %d completed.", Idx );
792 Conn_SyncServerStruct( void )
794 /* Synchronize server structures (connection IDs):
795 * connections <-> configuration */
801 for( i = 0; i < Pool_Size; i++ )
803 /* Established connection? */
804 if( My_Connections[i].sock <= NONE ) continue;
806 /* Server connection? */
807 client = Client_GetFromConn( i );
808 if(( ! client ) || ( Client_Type( client ) != CLIENT_SERVER )) continue;
810 for( c = 0; c < MAX_SERVERS; c++ )
812 /* Configured server? */
813 if( ! Conf_Server[c].host[0] ) continue;
816 if( strcmp( Conf_Server[c].name, Client_ID( client )) == 0 ) Conf_Server[c].conn_id = i;
819 } /* SyncServerStruct */
823 Handle_Write( CONN_ID Idx )
825 /* Daten aus Schreibpuffer versenden bzw. Connection aufbauen */
828 unsigned int wdatalen;
830 Log(LOG_DEBUG, "Handle_Write");
831 assert( Idx > NONE );
832 if ( My_Connections[Idx].sock < 0 ) {
833 Log(LOG_WARNING, "Handle_Write() on closed socket, idx %d", Idx);
836 assert( My_Connections[Idx].sock > NONE );
839 wdatalen = array_bytes(&My_Connections[Idx].wbuf );
841 if(( wdatalen == 0 ) && ( ! array_bytes(&My_Connections[Idx].zip.wbuf))) {
842 io_event_del(My_Connections[Idx].sock, IO_WANTWRITE );
846 /* write buffer empty, but not compression buf? -> flush compression buf. */
847 if( wdatalen == 0 ) Zip_Flush( Idx );
849 if( wdatalen == 0 ) {
850 io_event_del(My_Connections[Idx].sock, IO_WANTWRITE );
855 wdatalen = array_bytes(&My_Connections[Idx].wbuf ); /* Zip_Flush may change wbuf */
856 len = write( My_Connections[Idx].sock, array_start(&My_Connections[Idx].wbuf), wdatalen );
858 if( errno == EAGAIN || errno == EINTR)
861 Log( LOG_ERR, "Write error on connection %d (socket %d): %s!", Idx,
862 My_Connections[Idx].sock, strerror( errno ));
863 Conn_Close( Idx, "Write error!", NULL, false );
867 /* move any data not yet written to beginning */
868 array_moveleft(&My_Connections[Idx].wbuf, 1, len);
875 New_Connection( int Sock )
877 /* Neue Client-Verbindung von Listen-Socket annehmen und
878 * CLIENT-Struktur anlegen. */
881 struct request_info req;
883 struct sockaddr_in new_addr;
884 int new_sock, new_sock_len;
891 assert( Sock > NONE );
892 /* Connection auf Listen-Socket annehmen */
893 new_sock_len = sizeof( new_addr );
894 new_sock = accept( Sock, (struct sockaddr *)&new_addr, (socklen_t *)&new_sock_len );
897 Log( LOG_CRIT, "Can't accept connection: %s!", strerror( errno ));
902 /* Validate socket using TCP Wrappers */
903 request_init( &req, RQ_DAEMON, PACKAGE_NAME, RQ_FILE, new_sock, RQ_CLIENT_SIN, &new_addr, NULL );
905 if( ! hosts_access( &req ))
908 Log( deny_severity, "Refused connection from %s (by TCP Wrappers)!", inet_ntoa( new_addr.sin_addr ));
909 Simple_Message( new_sock, "ERROR :Connection refused" );
915 /* Socket initialisieren */
916 Init_Socket( new_sock );
918 /* Check IP-based connection limit */
919 cnt = Count_Connections( new_addr );
920 if(( Conf_MaxConnectionsIP > 0 ) && ( cnt >= Conf_MaxConnectionsIP ))
922 /* Access denied, too many connections from this IP address! */
923 Log( LOG_ERR, "Refused connection from %s: too may connections (%ld) from this IP address!", inet_ntoa( new_addr.sin_addr ), cnt);
924 Simple_Message( new_sock, "ERROR :Connection refused, too many connections from your IP address!" );
929 /* Freie Connection-Struktur suchen */
930 for( idx = 0; idx < Pool_Size; idx++ ) if( My_Connections[idx].sock == NONE ) break;
931 if( idx >= Pool_Size )
933 new_size = Pool_Size + CONNECTION_POOL;
935 /* Im bisherigen Pool wurde keine freie Connection-Struktur mehr gefunden.
936 * Wenn erlaubt und moeglich muss nun der Pool vergroessert werden: */
938 if( Conf_MaxConnections > 0 )
940 /* Es ist ein Limit konfiguriert */
941 if( Pool_Size >= Conf_MaxConnections )
943 /* Mehr Verbindungen duerfen wir leider nicht mehr annehmen ... */
944 Log( LOG_ALERT, "Can't accept connection: limit (%d) reached!", Pool_Size );
945 Simple_Message( new_sock, "ERROR :Connection limit reached" );
949 if( new_size > Conf_MaxConnections ) new_size = Conf_MaxConnections;
951 if( new_size < Pool_Size )
953 Log( LOG_ALERT, "Can't accept connection: limit (%d) reached -- overflow!", Pool_Size );
954 Simple_Message( new_sock, "ERROR :Connection limit reached" );
959 ptr = (POINTER *)realloc( My_Connections, sizeof( CONNECTION ) * new_size );
961 Log( LOG_EMERG, "Can't allocate memory! [New_Connection]" );
962 Simple_Message( new_sock, "ERROR: Internal error" );
968 Log( LOG_DEBUG, "Allocated new connection pool for %ld items (%ld bytes). [realloc()]", new_size, sizeof( CONNECTION ) * new_size );
971 /* Adjust pointer to new block */
972 My_Connections = (CONNECTION *)ptr;
974 /* Initialize new items */
975 for( idx = Pool_Size; idx < new_size; idx++ ) Init_Conn_Struct( idx );
978 /* Adjust new pool size */
979 Pool_Size = new_size;
982 /* Client-Struktur initialisieren */
983 c = Client_NewLocal( idx, inet_ntoa( new_addr.sin_addr ), CLIENT_UNKNOWN, false );
985 Log( LOG_ALERT, "Can't accept connection: can't create client structure!" );
986 Simple_Message( new_sock, "ERROR :Internal error" );
991 /* Verbindung registrieren */
992 Init_Conn_Struct( idx );
993 My_Connections[idx].sock = new_sock;
994 My_Connections[idx].addr = new_addr;
996 /* Neuen Socket registrieren */
997 if (!io_event_create( new_sock, IO_WANTREAD, cb_clientserver)) {
998 Simple_Message( new_sock, "ERROR :Internal error" );
999 Conn_Close( idx, "io_event_create() failed", NULL, false );
1003 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 );
1005 /* Hostnamen ermitteln */
1006 strlcpy( My_Connections[idx].host, inet_ntoa( new_addr.sin_addr ), sizeof( My_Connections[idx].host ));
1007 Client_SetHostname( c, My_Connections[idx].host );
1009 s = Resolve_Addr( &new_addr, My_Connections[idx].sock );
1011 s = Resolve_Addr( &new_addr );
1013 /* resolver process has been started */
1014 if( s ) My_Connections[idx].res_stat = s;
1016 /* Penalty-Zeit setzen */
1017 Conn_SetPenalty( idx, 4 );
1018 } /* New_Connection */
1022 Socket2Index( int Sock )
1024 /* zum Socket passende Connection suchen */
1028 assert( Sock > NONE );
1030 for( idx = 0; idx < Pool_Size; idx++ ) if( My_Connections[idx].sock == Sock ) break;
1032 if( idx >= Pool_Size )
1034 /* die Connection wurde vermutlich (wegen eines
1035 * Fehlers) bereits wieder abgebaut ... */
1037 Log( LOG_DEBUG, "Socket2Index: can't get connection for socket %d!", Sock );
1042 } /* Socket2Index */
1046 Read_Request( CONN_ID Idx )
1048 /* Daten von Socket einlesen und entsprechend behandeln.
1049 * Tritt ein Fehler auf, so wird der Socket geschlossen. */
1054 assert( Idx > NONE );
1055 assert( My_Connections[Idx].sock > NONE );
1058 if (( array_bytes(&My_Connections[Idx].rbuf) >= READBUFFER_LEN ) ||
1059 ( array_bytes(&My_Connections[Idx].zip.rbuf) >= ZREADBUFFER_LEN ))
1061 if ( array_bytes(&My_Connections[Idx].rbuf) >= READBUFFER_LEN )
1064 /* Der Lesepuffer ist voll */
1065 Log( LOG_ERR, "Receive buffer overflow (connection %d): %d bytes!", Idx,
1066 array_bytes(&My_Connections[Idx].rbuf));
1067 Conn_Close( Idx, "Receive buffer overflow!", NULL, false );
1071 len = read( My_Connections[Idx].sock, readbuf, sizeof readbuf -1 );
1073 Log( LOG_INFO, "%s:%d (%s) is closing the connection ...",
1074 My_Connections[Idx].host, ntohs( My_Connections[Idx].addr.sin_port),
1075 inet_ntoa( My_Connections[Idx].addr.sin_addr ));
1076 Conn_Close( Idx, "Socket closed!", "Client closed connection", false );
1081 if( errno == EAGAIN ) return;
1082 Log( LOG_ERR, "Read error on connection %d (socket %d): %s!", Idx,
1083 My_Connections[Idx].sock, strerror( errno ));
1084 Conn_Close( Idx, "Read error!", "Client closed connection", false );
1088 if ( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_ZIP )) {
1089 if (!array_catb( &My_Connections[Idx].zip.rbuf, readbuf, len)) {
1090 Log( LOG_ERR, "Could not append recieved data to zip input buffer (connn %d): %d bytes!", Idx, len );
1091 Conn_Close( Idx, "Receive buffer overflow!", NULL, false );
1098 if (!array_cats( &My_Connections[Idx].rbuf, readbuf )) {
1099 Log( LOG_ERR, "Could not append recieved data to input buffer (connn %d): %d bytes!", Idx, len );
1100 Conn_Close( Idx, "Receive buffer overflow!", NULL, false );
1104 /* Connection-Statistik aktualisieren */
1105 My_Connections[Idx].bytes_in += len;
1107 /* Timestamp aktualisieren */
1108 My_Connections[Idx].lastdata = time( NULL );
1110 Handle_Buffer( Idx );
1111 } /* Read_Request */
1115 Handle_Buffer( CONN_ID Idx )
1117 /* Handle Data in Connections Read-Buffer.
1118 * Return true if a reuqest was handled, false otherwise (also returned on errors). */
1124 unsigned int arraylen;
1125 bool action, result;
1133 if( My_Connections[Idx].delaytime > time( NULL )) return result;
1135 /* unpack compressed data */
1136 if ( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_ZIP ))
1137 if( ! Unzip_Buffer( Idx )) return false;
1140 arraylen = array_bytes(&My_Connections[Idx].rbuf);
1144 if (!array_cat0(&My_Connections[Idx].rbuf)) /* make sure buf is NULL terminated */
1147 array_truncate(&My_Connections[Idx].rbuf, 1, arraylen); /* do not count trailing NULL */
1150 /* A Complete Request end with CR+LF, see RFC 2812. */
1151 ptr = strstr( array_start(&My_Connections[Idx].rbuf), "\r\n" );
1153 if( ptr ) delta = 2; /* complete request */
1156 /* Check for non-RFC-compliant request (only CR or LF)? Unfortunately,
1157 * there are quite a few clients that do this (incl. "mIRC" :-( */
1158 ptr1 = strchr( array_start(&My_Connections[Idx].rbuf), '\r' );
1159 ptr2 = strchr( array_start(&My_Connections[Idx].rbuf), '\n' );
1161 if( ptr1 && ptr2 ) ptr = ptr1 > ptr2 ? ptr2 : ptr1;
1162 else if( ptr1 ) ptr = ptr1;
1163 else if( ptr2 ) ptr = ptr2;
1171 /* End of request found */
1174 len = ( ptr - (char*) array_start(&My_Connections[Idx].rbuf)) + delta;
1176 if( len < 0 || len > ( COMMAND_LEN - 1 )) {
1177 /* Request must not exceed 512 chars (incl. CR+LF!), see
1178 * RFC 2812. Disconnect Client if this happens. */
1179 Log( LOG_ERR, "Request too long (connection %d): %d bytes (max. %d expected)!",
1180 Idx, array_bytes(&My_Connections[Idx].rbuf), COMMAND_LEN - 1 );
1181 Conn_Close( Idx, NULL, "Request too long", true );
1186 /* remember if stream is already compressed */
1187 old_z = My_Connections[Idx].options & CONN_ZIP;
1192 /* A Request was read */
1193 My_Connections[Idx].msg_in++;
1194 if( ! Parse_Request( Idx, (char*)array_start(&My_Connections[Idx].rbuf) )) return false;
1197 array_moveleft(&My_Connections[Idx].rbuf, 1, len);
1199 Log(LOG_DEBUG, "%d byte left in rbuf", array_bytes(&My_Connections[Idx].rbuf));
1204 if(( ! old_z ) && ( My_Connections[Idx].options & CONN_ZIP ) && ( array_bytes(&My_Connections[Idx].rbuf) > 0 ))
1206 /* The last Command activated Socket-Compression.
1207 * Data that was read after that needs to be copied to Unzip-buf
1208 * for decompression */
1209 if( array_bytes(&My_Connections[Idx].rbuf)> ZREADBUFFER_LEN ) {
1211 Log( LOG_ALERT, "Can't move receive buffer: No space left in unzip buffer (need %d bytes)!", array_bytes(&My_Connections[Idx].rbuf ));
1214 if (!array_copy( &My_Connections[Idx].zip.rbuf, &My_Connections[Idx].rbuf ))
1217 array_trunc(&My_Connections[Idx].rbuf);
1219 Log( LOG_DEBUG, "Moved already received data (%d bytes) to uncompression buffer.", array_bytes(&My_Connections[Idx].zip.rbuf));
1223 if( action ) result = true;
1227 } /* Handle_Buffer */
1231 Check_Connections( void )
1233 /* check if connections are alive. if not, play PING-PONG first.
1234 * if this doesn't help either, disconnect client. */
1238 for( i = 0; i < Pool_Size; i++ ) {
1239 if( My_Connections[i].sock == NONE ) continue;
1241 c = Client_GetFromConn( i );
1242 if( c && (( Client_Type( c ) == CLIENT_USER ) || ( Client_Type( c ) == CLIENT_SERVER ) || ( Client_Type( c ) == CLIENT_SERVICE )))
1244 /* connected User, Server or Service */
1245 if( My_Connections[i].lastping > My_Connections[i].lastdata ) {
1246 /* we already sent a ping */
1247 if( My_Connections[i].lastping < time( NULL ) - Conf_PongTimeout ) {
1250 Log( LOG_DEBUG, "Connection %d: Ping timeout: %d seconds.", i, Conf_PongTimeout );
1252 Conn_Close( i, NULL, "Ping timeout", true );
1255 else if( My_Connections[i].lastdata < time( NULL ) - Conf_PingTimeout ) {
1256 /* we need to sent a PING */
1258 Log( LOG_DEBUG, "Connection %d: sending PING ...", i );
1260 My_Connections[i].lastping = time( NULL );
1261 Conn_WriteStr( i, "PING :%s", Client_ID( Client_ThisServer( )));
1266 /* connection is not fully established yet */
1267 if( My_Connections[i].lastdata < time( NULL ) - Conf_PingTimeout )
1271 Log( LOG_DEBUG, "Connection %d timed out ...", i );
1273 Conn_Close( i, NULL, "Timeout", false );
1277 } /* Check_Connections */
1281 Check_Servers( void )
1283 /* Check if we can establish further server links */
1289 /* Serach all connections, are there results from the resolver? */
1290 for( idx = 0; idx < Pool_Size; idx++ )
1292 if( My_Connections[idx].sock != SERVER_WAIT ) continue;
1295 if( My_Connections[idx].res_stat == NULL ) New_Server( Conf_GetServer( idx ), idx );
1298 /* Check all configured servers */
1299 for( i = 0; i < MAX_SERVERS; i++ )
1301 /* Valid outgoing server which isn't already connected or disabled? */
1302 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;
1304 /* Is there already a connection in this group? */
1305 if( Conf_Server[i].group > NONE )
1307 for( n = 0; n < MAX_SERVERS; n++ )
1309 if( n == i ) continue;
1310 if(( Conf_Server[n].conn_id > NONE ) && ( Conf_Server[n].group == Conf_Server[i].group )) break;
1312 if( n < MAX_SERVERS ) continue;
1315 /* Check last connect attempt? */
1316 if( Conf_Server[i].lasttry > time( NULL ) - Conf_ConnectRetry ) continue;
1318 /* Okay, try to connect now */
1319 Conf_Server[i].lasttry = time( NULL );
1321 /* Search free connection structure */
1322 for( idx = 0; idx < Pool_Size; idx++ ) if( My_Connections[idx].sock == NONE ) break;
1323 if( idx >= Pool_Size )
1325 Log( LOG_ALERT, "Can't establist server connection: connection limit reached (%d)!", Pool_Size );
1329 Log( LOG_DEBUG, "Preparing connection %d for \"%s\" ...", idx, Conf_Server[i].host );
1332 /* Verbindungs-Struktur initialisieren */
1333 Init_Conn_Struct( idx );
1334 My_Connections[idx].sock = SERVER_WAIT;
1335 Conf_Server[i].conn_id = idx;
1337 /* Resolve Hostname. If this fails, try to use it as an IP address */
1338 strlcpy( Conf_Server[i].ip, Conf_Server[i].host, sizeof( Conf_Server[i].ip ));
1339 strlcpy( My_Connections[idx].host, Conf_Server[i].host, sizeof( My_Connections[idx].host ));
1340 s = Resolve_Name( Conf_Server[i].host );
1342 /* resolver process running? */
1343 if( s ) My_Connections[idx].res_stat = s;
1345 } /* Check_Servers */
1349 New_Server( int Server, CONN_ID Idx )
1351 /* Establish new server link */
1353 struct sockaddr_in new_addr;
1354 struct in_addr inaddr;
1358 assert( Server > NONE );
1359 assert( Idx > NONE );
1361 /* Did we get a valid IP address? */
1362 if( ! Conf_Server[Server].ip[0] ) {
1363 /* No. Free connection structure and abort: */
1364 Log( LOG_ERR, "Can't connect to \"%s\" (connection %d): ip address unknown!", Conf_Server[Server].host, Idx );
1368 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 );
1370 #ifdef HAVE_INET_ATON
1371 if( inet_aton( Conf_Server[Server].ip, &inaddr ) == 0 )
1373 memset( &inaddr, 0, sizeof( inaddr ));
1374 inaddr.s_addr = inet_addr( Conf_Server[Server].ip );
1375 if( inaddr.s_addr == (unsigned)-1 )
1378 /* Can't convert IP address */
1379 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 );
1383 memset( &new_addr, 0, sizeof( new_addr ));
1384 new_addr.sin_family = AF_INET;
1385 new_addr.sin_addr = inaddr;
1386 new_addr.sin_port = htons( Conf_Server[Server].port );
1388 new_sock = socket( PF_INET, SOCK_STREAM, 0 );
1389 if ( new_sock < 0 ) {
1390 /* Can't create socket */
1391 Log( LOG_CRIT, "Can't create socket: %s!", strerror( errno ));
1395 if( ! Init_Socket( new_sock )) return;
1397 res = connect( new_sock, (struct sockaddr *)&new_addr, sizeof( new_addr ));
1398 if(( res != 0 ) && ( errno != EINPROGRESS )) {
1399 /* Can't connect socket */
1400 Log( LOG_CRIT, "Can't connect socket: %s!", strerror( errno ));
1405 /* Client-Struktur initialisieren */
1406 c = Client_NewLocal( Idx, inet_ntoa( new_addr.sin_addr ), CLIENT_UNKNOWNSERVER, false );
1408 /* Can't create new client structure */
1409 Log( LOG_ALERT, "Can't establish connection: can't create client structure!" );
1414 Client_SetIntroducer( c, c );
1415 Client_SetToken( c, TOKEN_OUTBOUND );
1417 /* Register connection */
1418 My_Connections[Idx].sock = new_sock;
1419 My_Connections[Idx].addr = new_addr;
1420 strlcpy( My_Connections[Idx].host, Conf_Server[Server].host, sizeof( My_Connections[Idx].host ));
1422 /* Register new socket */
1423 if (!io_event_create( new_sock, IO_WANTWRITE, cb_connserver)) {
1424 Log( LOG_ALERT, "io_event_create(): could not add fd %d", strerror(errno));
1425 Conn_Close( Idx, "io_event_create() failed", NULL, false );
1430 Log( LOG_DEBUG, "Registered new connection %d on socket %d.", Idx, My_Connections[Idx].sock );
1432 Conn_OPTION_ADD( &My_Connections[Idx], CONN_ISCONNECTING );
1435 Init_Conn_Struct( Idx );
1436 Conf_Server[Server].conn_id = NONE;
1441 Init_Conn_Struct( CONN_ID Idx )
1443 time_t now = time( NULL );
1444 /* Connection-Struktur initialisieren */
1446 memset( &My_Connections[Idx], 0, sizeof ( CONNECTION ));
1447 My_Connections[Idx].sock = NONE;
1448 My_Connections[Idx].lastdata = now;
1449 My_Connections[Idx].lastprivmsg = now;
1450 } /* Init_Conn_Struct */
1454 Init_Socket( int Sock )
1456 /* Initialize socket (set options) */
1460 if (!io_setnonblock(Sock)) {
1461 Log( LOG_CRIT, "Can't enable non-blocking mode for socket: %s!", strerror( errno ));
1466 /* Don't block this port after socket shutdown */
1468 if( setsockopt( Sock, SOL_SOCKET, SO_REUSEADDR, &value, (socklen_t)sizeof( value )) != 0 )
1470 Log( LOG_ERR, "Can't set socket option SO_REUSEADDR: %s!", strerror( errno ));
1471 /* ignore this error */
1474 /* Set type of service (TOS) */
1475 #if defined(IP_TOS) && defined(IPTOS_LOWDELAY)
1476 value = IPTOS_LOWDELAY;
1478 Log( LOG_DEBUG, "Setting option IP_TOS on socket %d to IPTOS_LOWDELAY (%d).", Sock, value );
1480 if( setsockopt( Sock, SOL_IP, IP_TOS, &value, (socklen_t)sizeof( value )) != 0 )
1482 Log( LOG_ERR, "Can't set socket option IP_TOS: %s!", strerror( errno ));
1483 /* ignore this error */
1492 void Read_Resolver_Result( int r_fd )
1494 /* Read result of resolver sub-process from pipe and update the
1495 * apropriate connection/client structure(s): hostname and/or
1496 * IDENT user name.*/
1503 Log( LOG_DEBUG, "Resolver: started, fd %d\n", r_fd );
1504 /* Search associated connection ... */
1505 for( i = 0; i < Pool_Size; i++ )
1507 if(( My_Connections[i].sock != NONE )
1508 && ( My_Connections[i].res_stat != NULL )
1509 && ( My_Connections[i].res_stat->pipe[0] == r_fd ))
1512 if( i >= Pool_Size )
1514 /* Ops, none found? Probably the connection has already
1515 * been closed!? We'll ignore that ... */
1518 Log( LOG_DEBUG, "Resolver: Got result for unknown connection!?" );
1523 /* Get resolver structure */
1524 s = My_Connections[i].res_stat;
1525 assert( s != NULL );
1527 /* Read result from pipe */
1528 len = read( r_fd, s->buffer + s->bufpos, sizeof( s->buffer ) - s->bufpos - 1 );
1532 Log( LOG_CRIT, "Resolver: Can't read result: %s!", strerror( errno ));
1533 FreeRes_stat( &My_Connections[i] );
1537 s->buffer[s->bufpos] = '\0';
1539 /* If the result string is incomplete, return to main loop and
1540 * wait until we can read in more bytes. */
1544 ptr = strchr( s->buffer, '\n' );
1549 Log( LOG_DEBUG, "Got result from resolver: \"%s\" (%d bytes), stage %d.", s->buffer, len, s->stage );
1552 /* Okay, we got a complete result: this is a host name for outgoing
1553 * connections and a host name or IDENT user name (if enabled) for
1554 * incoming connections.*/
1555 if( My_Connections[i].sock > NONE )
1557 /* Incoming connection. Search client ... */
1558 c = Client_GetFromConn( i );
1559 assert( c != NULL );
1561 /* Only update client information of unregistered clients */
1562 if( Client_Type( c ) == CLIENT_UNKNOWN )
1565 case 0: /* host name */
1566 strlcpy( My_Connections[i].host, s->buffer, sizeof( My_Connections[i].host ));
1567 Client_SetHostname( c, s->buffer );
1569 /* clean up buffer for IDENT result */
1570 len = strlen( s->buffer ) + 1;
1571 assert((size_t) len <= sizeof( s->buffer ));
1572 memmove( s->buffer, s->buffer + len, sizeof( s->buffer ) - len );
1573 assert(len <= s->bufpos );
1576 /* Don't close pipe and clean up, but
1577 * instead wait for IDENT result */
1581 case 1: /* IDENT user name */
1584 Log( LOG_INFO, "IDENT lookup for connection %ld: \"%s\".", i, s->buffer );
1585 Client_SetUser( c, s->buffer, true );
1587 else Log( LOG_INFO, "IDENT lookup for connection %ld: no result.", i );
1591 Log( LOG_ERR, "Resolver: got result for unknown stage %d!?", s->stage );
1595 else Log( LOG_DEBUG, "Resolver: discarding result for already registered connection %d.", i );
1600 /* Outgoing connection (server link): set the IP address
1601 * so that we can connect to it in the main loop. */
1603 /* Search server ... */
1604 n = Conf_GetServer( i );
1607 strlcpy( Conf_Server[n].ip, s->buffer, sizeof( Conf_Server[n].ip ));
1611 FreeRes_stat( &My_Connections[i] );
1613 /* Reset penalty time */
1614 Conn_ResetPenalty( i );
1615 } /* Read_Resolver_Result */
1619 Simple_Message( int Sock, char *Msg )
1621 char buf[COMMAND_LEN];
1622 /* Write "simple" message to socket, without using compression
1623 * or even the connection write buffers. Used e.g. for error
1624 * messages by New_Connection(). */
1625 assert( Sock > NONE );
1626 assert( Msg != NULL );
1628 strlcpy( buf, Msg, sizeof buf - 2);
1629 strlcat( buf, "\r\n", sizeof buf);
1630 (void)write( Sock, buf, strlen( buf ) );
1631 } /* Simple_Error */
1635 Count_Connections( struct sockaddr_in addr_in )
1640 for( i = 0; i < Pool_Size; i++ )
1642 if(( My_Connections[i].sock > NONE ) && ( My_Connections[i].addr.sin_addr.s_addr == addr_in.sin_addr.s_addr )) cnt++;
1645 } /* Count_Connections */