/*
* ngIRCd -- The Next Generation IRC Daemon
- * Copyright (c)2001,2002 by Alexander Barton (alex@barton.de)
+ * Copyright (c)2001-2003 by Alexander Barton (alex@barton.de)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
*/
+#define CONN_MODULE
+
#include "portab.h"
-static char UNUSED id[] = "$Id: conn.c,v 1.111 2002/12/30 00:01:45 alex Exp $";
+static char UNUSED id[] = "$Id: conn.c,v 1.123 2003/04/25 16:47:52 alex Exp $";
#include "imp.h"
#include <assert.h>
#endif
#ifdef HAVE_STDINT_H
-#include <stdint.h> /* u.a. fuer Mac OS X */
+#include <stdint.h> /* e.g. for Mac OS X */
#endif
-#ifdef USE_ZLIB
-#include <zlib.h>
+#ifdef USE_TCPWRAP
+#include <tcpd.h> /* for TCP Wrappers */
#endif
+#include "defines.h"
+#include "resolve.h"
+
#include "exp.h"
#include "conn.h"
#include "imp.h"
#include "ngircd.h"
#include "client.h"
-#include "resolve.h"
#include "conf.h"
+#include "conn-zip.h"
+#include "conn-func.h"
#include "log.h"
#include "parse.h"
#include "tool.h"
+#ifdef RENDEZVOUS
+#include "rendezvous.h"
+#endif
+
#include "exp.h"
#define SERVER_WAIT (NONE - 1)
-#ifdef USE_ZLIB
-typedef struct _ZipData
-{
- z_stream in; /* "Handle" for input stream */
- z_stream out; /* "Handle" for output stream */
- CHAR rbuf[READBUFFER_LEN]; /* Read buffer */
- INT rdatalen; /* Length of data in read buffer (compressed) */
- CHAR wbuf[WRITEBUFFER_LEN]; /* Write buffer */
- INT wdatalen; /* Length of data in write buffer (uncompressed) */
- LONG bytes_in, bytes_out; /* Counter for statistics (uncompressed!) */
-} ZIPDATA;
-#endif
-
-
-typedef struct _Connection
-{
- INT sock; /* Socket handle */
- struct sockaddr_in addr; /* Client address */
- RES_STAT *res_stat; /* Status of resolver process, if any */
- CHAR host[HOST_LEN]; /* Hostname */
- CHAR rbuf[READBUFFER_LEN]; /* Read buffer */
- INT rdatalen; /* Length of data in read buffer */
- CHAR wbuf[WRITEBUFFER_LEN]; /* Write buffer */
- INT wdatalen; /* Length of data in write buffer */
- time_t starttime; /* Start time of link */
- time_t lastdata; /* Last activity */
- time_t lastping; /* Last PING */
- time_t lastprivmsg; /* Last PRIVMSG */
- time_t delaytime; /* Ignore link ("penalty") */
- LONG bytes_in, bytes_out; /* Received and sent bytes */
- LONG msg_in, msg_out; /* Received and sent IRC messages */
- INT flag; /* Flag (see "irc-write" module) */
- INT options; /* Link options */
-#ifdef USE_ZLIB
- ZIPDATA zip; /* Compression information */
-#endif
-} CONNECTION;
-
-
LOCAL VOID Handle_Read PARAMS(( INT sock ));
LOCAL BOOLEAN Handle_Write PARAMS(( CONN_ID Idx ));
LOCAL VOID New_Connection PARAMS(( INT Sock ));
LOCAL BOOLEAN Handle_Buffer PARAMS(( CONN_ID Idx ));
LOCAL VOID Check_Connections PARAMS(( VOID ));
LOCAL VOID Check_Servers PARAMS(( VOID ));
-LOCAL VOID Init_Conn_Struct PARAMS(( LONG Idx ));
+LOCAL VOID Init_Conn_Struct PARAMS(( CONN_ID Idx ));
LOCAL BOOLEAN Init_Socket PARAMS(( INT Sock ));
LOCAL VOID New_Server PARAMS(( INT Server, CONN_ID Idx ));
LOCAL VOID Read_Resolver_Result PARAMS(( INT r_fd ));
-
-#ifdef USE_ZLIB
-LOCAL BOOLEAN Zip_Buffer PARAMS(( CONN_ID Idx, CHAR *Data, INT Len ));
-LOCAL BOOLEAN Zip_Flush PARAMS(( CONN_ID Idx ));
-LOCAL BOOLEAN Unzip_Buffer PARAMS(( CONN_ID Idx ));
-#endif
-
+LOCAL VOID Simple_Message PARAMS(( INT Sock, CHAR *Msg ));
LOCAL fd_set My_Listeners;
LOCAL fd_set My_Sockets;
LOCAL fd_set My_Connects;
-LOCAL CONNECTION *My_Connections;
-LOCAL LONG Pool_Size, WCounter;
+#ifdef USE_TCPWRAP
+INT allow_severity = LOG_INFO;
+INT deny_severity = LOG_ERR;
+#endif
GLOBAL VOID
Log( LOG_EMERG, "Can't allocate memory! [Conn_Init]" );
exit( 1 );
}
- Log( LOG_DEBUG, "Allocted connection pool for %ld items (%ld bytes).", Pool_Size, sizeof( CONNECTION ) * Pool_Size );
+ Log( LOG_DEBUG, "Allocted connection pool for %d items (%ld bytes).", Pool_Size, sizeof( CONNECTION ) * Pool_Size );
/* zu Beginn haben wir keine Verbindungen */
FD_ZERO( &My_Listeners );
CONN_ID idx;
INT i;
- /* Sockets schliessen */
Log( LOG_DEBUG, "Shutting down all connections ..." );
+
+#ifdef RENDEZVOUS
+ Rendezvous_UnregisterListeners( );
+#endif
+
+ /* Sockets schliessen */
for( i = 0; i < Conn_MaxFD + 1; i++ )
{
if( FD_ISSET( i, &My_Sockets ))
}
}
}
-
+
free( My_Connections );
My_Connections = NULL;
Pool_Size = 0;
GLOBAL INT
Conn_InitListeners( VOID )
{
- /* Ports, auf denen der Server Verbindungen entgegennehmen
- * soll, initialisieren */
+ /* Initialize ports on which the server should accept connections */
INT created, i;
GLOBAL VOID
Conn_ExitListeners( VOID )
{
- /* Alle "Listen-Sockets" schliessen */
+ /* Close down all listening sockets */
INT i;
+#ifdef RENDEZVOUS
+ Rendezvous_UnregisterListeners( );
+#endif
+
Log( LOG_INFO, "Shutting down all listening sockets ..." );
for( i = 0; i < Conn_MaxFD + 1; i++ )
{
GLOBAL BOOLEAN
Conn_NewListener( CONST UINT Port )
{
- /* Neuen Listen-Socket erzeugen: der Server wartet dann auf
- * dem angegebenen Port auf Verbindungen. Kann der Listen-
- * Socket nicht erteugt werden, so wird NULL geliefert.*/
+ /* Create new listening socket on specified port */
struct sockaddr_in addr;
INT sock;
+#ifdef RENDEZVOUS
+ CHAR name[CLIENT_ID_LEN], *info;
+#endif
/* Server-"Listen"-Socket initialisieren */
memset( &addr, 0, sizeof( addr ));
Log( LOG_INFO, "Now listening on port %d (socket %d).", Port, sock );
+#ifdef RENDEZVOUS
+ /* Get best server description text */
+ if( ! Conf_ServerInfo[0] ) info = Conf_ServerName;
+ else
+ {
+ /* Use server info string */
+ info = NULL;
+ if( Conf_ServerInfo[0] == '[' )
+ {
+ /* Cut off leading hostname part in "[]" */
+ info = strchr( Conf_ServerInfo, ']' );
+ if( info )
+ {
+ info++;
+ while( *info == ' ' ) info++;
+ }
+ }
+ if( ! info ) info = Conf_ServerInfo;
+ }
+
+ /* Add port number to description if non-standard */
+ if( Port != 6667 ) snprintf( name, sizeof( name ), "%s (port %u)", info, Port );
+ else strlcpy( name, info, sizeof( name ));
+
+ /* Register service */
+ Rendezvous_Register( name, RENDEZVOUS_TYPE, Port );
+#endif
+
return TRUE;
} /* Conn_NewListener */
fd_set read_sockets, write_sockets;
struct timeval tv;
time_t start, t;
- LONG i, idx;
+ CONN_ID i, idx;
BOOLEAN timeout;
start = time( NULL );
{
timeout = TRUE;
+#ifdef RENDEZVOUS
+ Rendezvous_Handler( );
+#endif
+
/* Should the configuration be reloaded? */
if( NGIRCd_SignalRehash ) NGIRCd_Rehash( );
FD_SET( My_Connections[i].sock, &write_sockets );
}
}
+
/* Sockets mit im Aufbau befindlichen ausgehenden Verbindungen suchen */
for( i = 0; i < Pool_Size; i++ )
{
{
/* Fuer die Verbindung ist eine "Penalty-Zeit" gesetzt */
FD_CLR( My_Connections[i].sock, &read_sockets );
- FD_CLR( My_Connections[i].sock, &write_sockets );
}
}
for( i = 0; i < Conn_MaxFD + 1; i++ )
tv.tv_usec = 0;
if( timeout ) tv.tv_sec = TIME_RES;
else tv.tv_sec = 0;
-
+
/* Auf Aktivitaet warten */
i = select( Conn_MaxFD + 1, &read_sockets, &write_sockets, NULL, &tv );
if( i == 0 )
if( errno != EINTR )
{
Log( LOG_EMERG, "Conn_Handler(): select(): %s!", strerror( errno ));
- Log( LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE );
+ Log( LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME );
exit( 1 );
}
continue;
/* Es kann geschrieben werden ... */
idx = Socket2Index( i );
if( idx == NONE ) continue;
-
+
if( ! Handle_Write( idx ))
{
/* Fehler beim Schreiben! Diesen Socket nun
assert( Idx > NONE );
assert( My_Connections[Idx].sock > NONE );
+ /* Is this link already shutting down? */
+ if( My_Connections[Idx].options & CONN_ISCLOSING )
+ {
+ /* Conn_Close() has been called recursively for this link;
+ * probabe reason: Try_Write() failed -- see below. */
+ return;
+ }
+
+ /* Mark link as "closing" */
+ My_Connections[Idx].options |= CONN_ISCLOSING;
+
/* Search client, if any */
c = Client_GetFromConn( Idx );
}
/* Try to write out the write buffer */
- Try_Write( Idx );
+ (VOID)Try_Write( Idx );
/* Shut down socket */
if( close( My_Connections[Idx].sock ) != 0 )
{
/* Oops, we can't close the socket!? This is fatal! */
Log( LOG_EMERG, "Error closing connection %d (socket %d) with %s:%d - %s!", Idx, My_Connections[Idx].sock, My_Connections[Idx].host, ntohs( My_Connections[Idx].addr.sin_port), strerror( errno ));
- Log( LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE );
+ Log( LOG_ALERT, "%s exiting due to fatal errors!", PACKAGE_NAME );
exit( 1 );
}
GLOBAL VOID
-Conn_UpdateIdle( CONN_ID Idx )
-{
- /* Idle-Timer zuruecksetzen */
-
- assert( Idx > NONE );
- My_Connections[Idx].lastprivmsg = time( NULL );
-}
-
-
-GLOBAL time_t
-Conn_GetIdle( CONN_ID Idx )
-{
- /* Idle-Time einer Verbindung liefern (in Sekunden) */
-
- assert( Idx > NONE );
- return time( NULL ) - My_Connections[Idx].lastprivmsg;
-} /* Conn_GetIdle */
-
-
-GLOBAL time_t
-Conn_LastPing( CONN_ID Idx )
-{
- /* Zeitpunkt des letzten PING liefern */
-
- assert( Idx > NONE );
- return My_Connections[Idx].lastping;
-} /* Conn_LastPing */
-
-
-GLOBAL VOID
-Conn_SetPenalty( CONN_ID Idx, time_t Seconds )
+Conn_SyncServerStruct( VOID )
{
- /* Penalty-Delay fuer eine Verbindung (in Sekunden) setzen;
- * waehrend dieser Zeit wird der entsprechende Socket vom Server
- * bei Lese-Operationen komplett ignoriert. Der Delay kann mit
- * dieser Funktion nur erhoeht, nicht aber verringert werden. */
-
- time_t t;
-
- assert( Idx > NONE );
- assert( Seconds >= 0 );
-
- t = time( NULL ) + Seconds;
- if( t > My_Connections[Idx].delaytime ) My_Connections[Idx].delaytime = t;
-} /* Conn_SetPenalty */
-
+ /* Synchronize server structures (connection IDs):
+ * connections <-> configuration */
-GLOBAL VOID
-Conn_ResetPenalty( CONN_ID Idx )
-{
- assert( Idx > NONE );
- My_Connections[Idx].delaytime = 0;
-} /* Conn_ResetPenalty */
-
-
-GLOBAL VOID
-Conn_ClearFlags( VOID )
-{
- /* Alle Connection auf "nicht-markiert" setzen */
-
- LONG i;
-
- for( i = 0; i < Pool_Size; i++ ) My_Connections[i].flag = 0;
-} /* Conn_ClearFlags */
-
-
-GLOBAL INT
-Conn_Flag( CONN_ID Idx )
-{
- /* Ist eine Connection markiert (TRUE) oder nicht? */
-
- assert( Idx > NONE );
- return My_Connections[Idx].flag;
-} /* Conn_Flag */
-
-
-GLOBAL VOID
-Conn_SetFlag( CONN_ID Idx, INT Flag )
-{
- /* Connection markieren */
-
- assert( Idx > NONE );
- My_Connections[Idx].flag = Flag;
-} /* Conn_SetFlag */
-
-
-GLOBAL CONN_ID
-Conn_First( VOID )
-{
- /* Connection-Struktur der ersten Verbindung liefern;
- * Ist keine Verbindung vorhanden, wird NONE geliefert. */
+ CLIENT *client;
+ CONN_ID i;
+ INT c;
- LONG i;
-
for( i = 0; i < Pool_Size; i++ )
{
- if( My_Connections[i].sock != NONE ) return i;
- }
- return NONE;
-} /* Conn_First */
-
-
-GLOBAL CONN_ID
-Conn_Next( CONN_ID Idx )
-{
- /* Naechste Verbindungs-Struktur liefern; existiert keine
- * weitere, so wird NONE geliefert. */
-
- LONG i = NONE;
-
- assert( Idx > NONE );
-
- for( i = Idx + 1; i < Pool_Size; i++ )
- {
- if( My_Connections[i].sock != NONE ) return i;
- }
- return NONE;
-} /* Conn_Next */
-
-
-GLOBAL VOID
-Conn_SetOption( CONN_ID Idx, INT Option )
-{
- /* Option fuer Verbindung setzen.
- * Initial sind alle Optionen _nicht_ gesetzt. */
-
- assert( Idx > NONE );
- assert( Option != 0 );
-
- My_Connections[Idx].options |= Option;
-} /* Conn_SetOption */
-
-
-GLOBAL VOID
-Conn_UnsetOption( CONN_ID Idx, INT Option )
-{
- /* Option fuer Verbindung loeschen */
-
- assert( Idx > NONE );
- assert( Option != 0 );
-
- My_Connections[Idx].options &= ~Option;
-} /* Conn_UnsetOption */
-
-
-GLOBAL INT
-Conn_Options( CONN_ID Idx )
-{
- assert( Idx > NONE );
- return My_Connections[Idx].options;
-} /* Conn_Options */
-
-
-#ifdef USE_ZLIB
+ /* Established connection? */
+ if( My_Connections[i].sock <= NONE ) continue;
-GLOBAL BOOLEAN
-Conn_InitZip( CONN_ID Idx )
-{
- /* Kompression fuer Link initialisieren */
-
- assert( Idx > NONE );
+ /* Server connection? */
+ client = Client_GetFromConn( i );
+ if(( ! client ) || ( Client_Type( client ) != CLIENT_SERVER )) continue;
- My_Connections[Idx].zip.in.avail_in = 0;
- My_Connections[Idx].zip.in.total_in = 0;
- My_Connections[Idx].zip.in.total_out = 0;
- My_Connections[Idx].zip.in.zalloc = NULL;
- My_Connections[Idx].zip.in.zfree = NULL;
- My_Connections[Idx].zip.in.data_type = Z_ASCII;
+ for( c = 0; c < MAX_SERVERS; c++ )
+ {
+ /* Configured server? */
+ if( ! Conf_Server[c].host[0] ) continue;
- if( inflateInit( &My_Connections[Idx].zip.in ) != Z_OK )
- {
- /* Fehler! */
- Log( LOG_ALERT, "Can't initialize compression on connection %d (zlib inflate)!", Idx );
- return FALSE;
- }
-
- My_Connections[Idx].zip.out.total_in = 0;
- My_Connections[Idx].zip.out.total_in = 0;
- My_Connections[Idx].zip.out.zalloc = NULL;
- My_Connections[Idx].zip.out.zfree = NULL;
- My_Connections[Idx].zip.out.data_type = Z_ASCII;
-
- if( deflateInit( &My_Connections[Idx].zip.out, Z_DEFAULT_COMPRESSION ) != Z_OK )
- {
- /* Fehler! */
- Log( LOG_ALERT, "Can't initialize compression on connection %d (zlib deflate)!", Idx );
- return FALSE;
+ /* Duplicate? */
+ if( strcmp( Conf_Server[c].name, Client_ID( client )) == 0 ) Conf_Server[c].conn_id = i;
+ }
}
-
- My_Connections[Idx].zip.bytes_in = My_Connections[Idx].bytes_in;
- My_Connections[Idx].zip.bytes_out = My_Connections[Idx].bytes_out;
-
- Log( LOG_INFO, "Enabled link compression (zlib) on connection %d.", Idx );
- Conn_SetOption( Idx, CONN_ZIP );
-
- return TRUE;
-} /* Conn_InitZip */
-
-
-GLOBAL LONG
-Conn_SendBytesZip( CONN_ID Idx )
-{
- /* Anzahl gesendeter Bytes (komprimiert!) liefern */
-
- assert( Idx > NONE );
- return My_Connections[Idx].zip.bytes_out;
-} /* Conn_SendBytesZip */
-
-
-GLOBAL LONG
-Conn_RecvBytesZip( CONN_ID Idx )
-{
- /* Anzahl gesendeter Bytes (komprimiert!) liefern */
-
- assert( Idx > NONE );
- return My_Connections[Idx].zip.bytes_in;
-} /* Conn_RecvBytesZip */
-
-#endif
-
-
-GLOBAL time_t
-Conn_StartTime( CONN_ID Idx )
-{
- /* Zeitpunkt des Link-Starts liefern (in Sekunden) */
-
- assert( Idx > NONE );
- return My_Connections[Idx].starttime;
-} /* Conn_Uptime */
-
-
-GLOBAL INT
-Conn_SendQ( CONN_ID Idx )
-{
- /* Laenge der Daten im Schreibbuffer liefern */
-
- assert( Idx > NONE );
-#ifdef USE_ZLIB
- if( My_Connections[Idx].options & CONN_ZIP ) return My_Connections[Idx].zip.wdatalen;
- else
-#endif
- return My_Connections[Idx].wdatalen;
-} /* Conn_SendQ */
-
-
-GLOBAL LONG
-Conn_SendMsg( CONN_ID Idx )
-{
- /* Anzahl gesendeter Nachrichten liefern */
-
- assert( Idx > NONE );
- return My_Connections[Idx].msg_out;
-} /* Conn_SendMsg */
-
-
-GLOBAL LONG
-Conn_SendBytes( CONN_ID Idx )
-{
- /* Anzahl gesendeter Bytes (unkomprimiert) liefern */
-
- assert( Idx > NONE );
- return My_Connections[Idx].bytes_out;
-} /* Conn_SendBytes */
-
-
-GLOBAL INT
-Conn_RecvQ( CONN_ID Idx )
-{
- /* Laenge der Daten im Lesebuffer liefern */
-
- assert( Idx > NONE );
-#ifdef USE_ZLIB
- if( My_Connections[Idx].options & CONN_ZIP ) return My_Connections[Idx].zip.rdatalen;
- else
-#endif
- return My_Connections[Idx].rdatalen;
-} /* Conn_RecvQ */
-
-
-GLOBAL LONG
-Conn_RecvMsg( CONN_ID Idx )
-{
- /* Anzahl empfangener Nachrichten liefern */
-
- assert( Idx > NONE );
- return My_Connections[Idx].msg_in;
-} /* Conn_RecvMsg */
-
-
-GLOBAL LONG
-Conn_RecvBytes( CONN_ID Idx )
-{
- /* Anzahl empfangener Bytes (unkomprimiert) liefern */
-
- assert( Idx > NONE );
- return My_Connections[Idx].bytes_in;
-} /* Conn_RecvBytes */
-
-
-GLOBAL VOID
-Conn_ResetWCounter( VOID )
-{
- WCounter = 0;
-} /* Conn_ResetWCounter */
-
-
-GLOBAL LONG
-Conn_WCounter( VOID )
-{
- return WCounter;
-} /* Conn_WCounter */
+} /* SyncServerStruct */
LOCAL BOOLEAN
/* Daten aus Schreibpuffer versenden bzw. Connection aufbauen */
INT len, res, err;
+ socklen_t sock_len;
+ CLIENT *c;
assert( Idx > NONE );
assert( My_Connections[Idx].sock > NONE );
FD_CLR( My_Connections[Idx].sock, &My_Connects );
/* Ergebnis des connect() ermitteln */
- len = sizeof( err );
- res = getsockopt( My_Connections[Idx].sock, SOL_SOCKET, SO_ERROR, &err, &len );
- assert( len == sizeof( err ));
+ sock_len = sizeof( err );
+ res = getsockopt( My_Connections[Idx].sock, SOL_SOCKET, SO_ERROR, &err, &sock_len );
+ assert( sock_len == sizeof( err ));
/* Fehler aufgetreten? */
if(( res != 0 ) || ( err != 0 ))
if( res != 0 ) Log( LOG_CRIT, "getsockopt (connection %d): %s!", Idx, strerror( errno ));
else Log( LOG_CRIT, "Can't connect socket to \"%s:%d\" (connection %d): %s!", My_Connections[Idx].host, Conf_Server[Conf_GetServer( Idx )].port, Idx, strerror( err ));
- /* Socket etc. pp. aufraeumen */
+ /* Clean up socket, connection and client structures */
FD_CLR( My_Connections[Idx].sock, &My_Sockets );
+ c = Client_GetFromConn( Idx );
+ if( c ) Client_DestroyNow( c );
close( My_Connections[Idx].sock );
Init_Conn_Struct( Idx );
/* Neue Client-Verbindung von Listen-Socket annehmen und
* CLIENT-Struktur anlegen. */
+#ifdef USE_TCPWRAP
+ struct request_info req;
+#endif
struct sockaddr_in new_addr;
INT new_sock, new_sock_len;
RES_STAT *s;
return;
}
+#ifdef USE_TCPWRAP
+ /* Validate socket using TCP Wrappers */
+ request_init( &req, RQ_DAEMON, PACKAGE_NAME, RQ_FILE, new_sock, RQ_CLIENT_SIN, &new_addr, NULL );
+ if( ! hosts_access( &req ))
+ {
+ /* Access denied! */
+ Log( deny_severity, "Refused connection from %s (by TCP Wrappers)!", inet_ntoa( new_addr.sin_addr ));
+ Simple_Message( new_sock, "ERROR :Connection refused" );
+ close( new_sock );
+ return;
+ }
+#endif
+
/* Socket initialisieren */
Init_Socket( new_sock );
if( idx >= Pool_Size )
{
new_size = Pool_Size + CONNECTION_POOL;
-
+
/* Im bisherigen Pool wurde keine freie Connection-Struktur mehr gefunden.
* Wenn erlaubt und moeglich muss nun der Pool vergroessert werden: */
-
+
if( Conf_MaxConnections > 0 )
{
/* Es ist ein Limit konfiguriert */
{
/* Mehr Verbindungen duerfen wir leider nicht mehr annehmen ... */
Log( LOG_ALERT, "Can't accept connection: limit (%d) reached!", Pool_Size );
+ Simple_Message( new_sock, "ERROR :Connection limit reached" );
close( new_sock );
return;
}
if( new_size > Conf_MaxConnections ) new_size = Conf_MaxConnections;
}
-
+ if( new_size < Pool_Size )
+ {
+ Log( LOG_ALERT, "Can't accespt connection: limit (%d) reached -- overflow!", Pool_Size );
+ Simple_Message( new_sock, "ERROR :Connection limit reached" );
+ close( new_sock );
+ return;
+ }
+
/* zunaechst realloc() versuchen; wenn das scheitert, malloc() versuchen
* und Daten ggf. "haendisch" umkopieren. (Haesslich! Eine wirklich
* dynamische Verwaltung waere wohl _deutlich_ besser ...) */
{
/* Offenbar steht kein weiterer Sepeicher zur Verfuegung :-( */
Log( LOG_EMERG, "Can't allocate memory! [New_Connection]" );
+ Simple_Message( new_sock, "ERROR: Internal error" );
close( new_sock );
return;
}
-
+
/* Struktur umkopieren ... */
memcpy( ptr, My_Connections, sizeof( CONNECTION ) * Pool_Size );
-
+
Log( LOG_DEBUG, "Allocated new connection pool for %ld items (%ld bytes). [malloc()/memcpy()]", new_size, sizeof( CONNECTION ) * new_size );
}
else Log( LOG_DEBUG, "Allocated new connection pool for %ld items (%ld bytes). [realloc()]", new_size, sizeof( CONNECTION ) * new_size );
-
+
/* Adjust pointer to new block */
My_Connections = ptr;
-
+
/* Initialize new items */
for( idx = Pool_Size; idx < new_size; idx++ ) Init_Conn_Struct( idx );
idx = Pool_Size;
-
+
/* Adjust new pool size */
Pool_Size = new_size;
}
if( ! c )
{
Log( LOG_ALERT, "Can't accept connection: can't create client structure!" );
+ Simple_Message( new_sock, "ERROR :Internal error" );
close( new_sock );
return;
}
/* Sub-Prozess wurde asyncron gestartet */
My_Connections[idx].res_stat = s;
}
-
+
/* Penalty-Zeit setzen */
Conn_SetPenalty( idx, 4 );
} /* New_Connection */
if( ! Unzip_Buffer( Idx )) return FALSE;
}
#endif
-
+
if( My_Connections[Idx].rdatalen < 1 ) break;
/* Eine komplette Anfrage muss mit CR+LF enden, vgl.
* RFC 2812. Haben wir eine? */
My_Connections[Idx].rbuf[My_Connections[Idx].rdatalen] = '\0';
ptr = strstr( My_Connections[Idx].rbuf, "\r\n" );
-
+
if( ptr ) delta = 2;
#ifndef STRICT_RFC
else
else if( ptr2 ) ptr = ptr2;
}
#endif
-
+
action = FALSE;
if( ptr )
{
}
#endif
}
-
+
if( action ) result = TRUE;
} while( action );
-
+
return result;
} /* Handle_Buffer */
* auch das nicht "hilft", Client disconnectieren. */
CLIENT *c;
- LONG i;
+ CONN_ID i;
for( i = 0; i < Pool_Size; i++ )
{
CONN_ID idx;
INT i, n;
- /* Don't connect in "passive mode" */
- if( NGIRCd_Passive ) return;
-
/* Serach all connections, are there results from the resolver? */
for( idx = 0; idx < Pool_Size; idx++ )
{
/* Check all configured servers */
for( i = 0; i < MAX_SERVERS; i++ )
{
- /* Valid outgoing server which isn't already connected? */
- if(( ! Conf_Server[i].host[0] ) || ( ! Conf_Server[i].port > 0 ) || ( Conf_Server[i].conn_id > NONE )) continue;
+ /* Valid outgoing server which isn't already connected or disabled? */
+ 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;
/* Is there already a connection in this group? */
if( Conf_Server[i].group > NONE )
LOCAL VOID
New_Server( INT Server, CONN_ID Idx )
{
- /* Neue Server-Verbindung aufbauen */
+ /* Establish new server link */
struct sockaddr_in new_addr;
struct in_addr inaddr;
assert( Server > NONE );
assert( Idx > NONE );
- /* Wurde eine gueltige IP-Adresse gefunden? */
+ /* Did we get a valid IP address? */
if( ! Conf_Server[Server].ip[0] )
{
- /* Nein. Verbindung wieder freigeben: */
+ /* No. Free connection structure and abort: */
Init_Conn_Struct( Idx );
+ Conf_Server[Server].conn_id = NONE;
Log( LOG_ERR, "Can't connect to \"%s\" (connection %d): ip address unknown!", Conf_Server[Server].host, Idx );
return;
}
if( inaddr.s_addr == (unsigned)-1 )
#endif
{
- /* Konnte Adresse nicht konvertieren */
+ /* Can't convert IP address */
Init_Conn_Struct( Idx );
+ Conf_Server[Server].conn_id = NONE;
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 );
return;
}
new_sock = socket( PF_INET, SOCK_STREAM, 0 );
if ( new_sock < 0 )
{
+ /* Can't create socket */
Init_Conn_Struct( Idx );
+ Conf_Server[Server].conn_id = NONE;
Log( LOG_CRIT, "Can't create socket: %s!", strerror( errno ));
return;
}
res = connect( new_sock, (struct sockaddr *)&new_addr, sizeof( new_addr ));
if(( res != 0 ) && ( errno != EINPROGRESS ))
{
+ /* Can't connect socket */
Log( LOG_CRIT, "Can't connect socket: %s!", strerror( errno ));
close( new_sock );
Init_Conn_Struct( Idx );
+ Conf_Server[Server].conn_id = NONE;
return;
}
c = Client_NewLocal( Idx, inet_ntoa( new_addr.sin_addr ), CLIENT_UNKNOWNSERVER, FALSE );
if( ! c )
{
+ /* Can't create new client structure */
close( new_sock );
Init_Conn_Struct( Idx );
+ Conf_Server[Server].conn_id = NONE;
Log( LOG_ALERT, "Can't establish connection: can't create client structure!" );
return;
}
Client_SetIntroducer( c, c );
Client_SetToken( c, TOKEN_OUTBOUND );
- /* Verbindung registrieren */
+ /* Register connection */
My_Connections[Idx].sock = new_sock;
My_Connections[Idx].addr = new_addr;
strlcpy( My_Connections[Idx].host, Conf_Server[Server].host, sizeof( My_Connections[Idx].host ));
- /* Neuen Socket registrieren */
+ /* Register new socket */
FD_SET( new_sock, &My_Sockets );
FD_SET( new_sock, &My_Connects );
if( new_sock > Conn_MaxFD ) Conn_MaxFD = new_sock;
-
+
Log( LOG_DEBUG, "Registered new connection %d on socket %d.", Idx, My_Connections[Idx].sock );
} /* New_Server */
LOCAL VOID
-Init_Conn_Struct( LONG Idx )
+Init_Conn_Struct( CONN_ID Idx )
{
/* Connection-Struktur initialisieren */
}
Log( LOG_DEBUG, "Resolver: %s is \"%s\".", My_Connections[i].host, result );
-
+
/* Aufraeumen */
close( My_Connections[i].res_stat->pipe[0] );
close( My_Connections[i].res_stat->pipe[1] );
} /* Read_Resolver_Result */
-#ifdef USE_ZLIB
-
-LOCAL BOOLEAN
-Zip_Buffer( CONN_ID Idx, CHAR *Data, INT Len )
-{
- /* Daten zum Komprimieren im "Kompressions-Puffer" sammeln.
- * Es wird TRUE bei Erfolg, sonst FALSE geliefert. */
-
- assert( Idx > NONE );
- assert( Data != NULL );
- assert( Len > 0 );
-
- /* Ist noch Platz im Kompressions-Puffer? */
- if( ZWRITEBUFFER_LEN - My_Connections[Idx].zip.wdatalen < Len + 50 )
- {
- /* Nein! Puffer zunaechst leeren ...*/
- if( ! Zip_Flush( Idx )) return FALSE;
- }
-
- /* Daten kopieren */
- memmove( My_Connections[Idx].zip.wbuf + My_Connections[Idx].zip.wdatalen, Data, Len );
- My_Connections[Idx].zip.wdatalen += Len;
-
- return TRUE;
-} /* Zip_Buffer */
-
-
-LOCAL BOOLEAN
-Zip_Flush( CONN_ID Idx )
-{
- /* Daten komprimieren und in Schreibpuffer kopieren.
- * Es wird TRUE bei Erfolg, sonst FALSE geliefert. */
-
- INT result, out_len;
- z_stream *out;
-
- out = &My_Connections[Idx].zip.out;
-
- out->next_in = My_Connections[Idx].zip.wbuf;
- out->avail_in = My_Connections[Idx].zip.wdatalen;
- out->next_out = My_Connections[Idx].wbuf + My_Connections[Idx].wdatalen;
- out->avail_out = WRITEBUFFER_LEN - My_Connections[Idx].wdatalen;
-
- result = deflate( out, Z_SYNC_FLUSH );
- if(( result != Z_OK ) || ( out->avail_in > 0 ))
- {
- Log( LOG_ALERT, "Compression error: code %d!?", result );
- Conn_Close( Idx, "Compression error!", NULL, FALSE );
- return FALSE;
- }
-
- out_len = WRITEBUFFER_LEN - My_Connections[Idx].wdatalen - out->avail_out;
- My_Connections[Idx].wdatalen += out_len;
- My_Connections[Idx].bytes_out += out_len;
- My_Connections[Idx].zip.bytes_out += My_Connections[Idx].zip.wdatalen;
- My_Connections[Idx].zip.wdatalen = 0;
-
- return TRUE;
-} /* Zip_Flush */
-
-
-LOCAL BOOLEAN
-Unzip_Buffer( CONN_ID Idx )
+LOCAL VOID
+Simple_Message( INT Sock, CHAR *Msg )
{
- /* Daten entpacken und in Lesepuffer kopieren. Bei Fehlern
- * wird FALSE geliefert, ansonsten TRUE. Der Fall, dass keine
- * Daten mehr zu entpacken sind, ist _kein_ Fehler! */
-
- INT result, in_len, out_len;
- z_stream *in;
-
- assert( Idx > NONE );
-
- if( My_Connections[Idx].zip.rdatalen <= 0 ) return TRUE;
-
- in = &My_Connections[Idx].zip.in;
-
- in->next_in = My_Connections[Idx].zip.rbuf;
- in->avail_in = My_Connections[Idx].zip.rdatalen;
- in->next_out = My_Connections[Idx].rbuf + My_Connections[Idx].rdatalen;
- in->avail_out = READBUFFER_LEN - My_Connections[Idx].rdatalen - 1;
-
- result = inflate( in, Z_SYNC_FLUSH );
- if( result != Z_OK )
- {
- Log( LOG_ALERT, "Decompression error: code %d (ni=%d, ai=%d, no=%d, ao=%d)!?", result, in->next_in, in->avail_in, in->next_out, in->avail_out );
- Conn_Close( Idx, "Decompression error!", NULL, FALSE );
- return FALSE;
- }
-
- in_len = My_Connections[Idx].zip.rdatalen - in->avail_in;
- out_len = READBUFFER_LEN - My_Connections[Idx].rdatalen - 1 - in->avail_out;
- My_Connections[Idx].rdatalen += out_len;
-
- if( in->avail_in > 0 )
- {
- /* es konnten nicht alle Daten entpackt werden, vermutlich war
- * im Ziel-Puffer kein Platz mehr. Umkopieren ... */
- My_Connections[Idx].zip.rdatalen -= in_len;
- memmove( My_Connections[Idx].zip.rbuf, My_Connections[Idx].zip.rbuf + in_len, My_Connections[Idx].zip.rdatalen );
- }
- else My_Connections[Idx].zip.rdatalen = 0;
- My_Connections[Idx].zip.bytes_in += out_len;
-
- return TRUE;
-} /* Unzip_Buffer */
+ /* Write "simple" message to socket, without using compression
+ * or even the connection write buffers. Used e.g. for error
+ * messages by New_Connection(). */
+ assert( Sock > NONE );
+ assert( Msg != NULL );
-#endif
+ (VOID)send( Sock, Msg, strlen( Msg ), 0 );
+ (VOID)send( Sock, "\r\n", 2, 0 );
+} /* Simple_Error */
/* -eof- */
projects / ngircd-alex.git / blobdiff