* Naehere Informationen entnehmen Sie bitter der Datei COPYING. Eine Liste
* der an ngIRCd beteiligten Autoren finden Sie in der Datei AUTHORS.
*
- * $Id: conn.c,v 1.25 2002/01/02 02:44:36 alex Exp $
+ * $Id: conn.c,v 1.38 2002/02/19 20:34:31 alex Exp $
*
* connect.h: Verwaltung aller Netz-Verbindungen ("connections")
*
* $Log: conn.c,v $
- * Revision 1.25 2002/01/02 02:44:36 alex
- * - neue Defines fuer max. Anzahl Server und Operatoren.
+ * Revision 1.38 2002/02/19 20:34:31 alex
+ * - Bei ausgehenden Verbindungen wird der Ziel-Port ins Log geschrieben.
+ *
+ * Revision 1.37 2002/02/19 20:05:37 alex
+ * - "Passive-Mode" implementiert: kein Auto-Conect zu anderen Servern.
+ *
+ * Revision 1.36 2002/02/11 01:00:50 alex
+ * - neue Funktion Conn_LastPing().
+ *
+ * Revision 1.35 2002/01/18 11:12:11 alex
+ * - der Sniffer wird nun nur noch aktiviert, wenn auf Kommandozeile angegeben.
+ *
+ * Revision 1.34 2002/01/07 15:29:52 alex
+ * - PASSSERVERADD definiert, wird beim PASS-Befehl an Server verwendet.
+ *
+ * Revision 1.33 2002/01/06 15:18:14 alex
+ * - Loglevel und Meldungen nochmals geaendert. Level passen nun besser.
+ *
+ * Revision 1.32 2002/01/05 23:25:25 alex
+ * - Vorbereitungen fuer Ident-Abfragen bei neuen Client-Strukturen.
+ *
+ * Revision 1.31 2002/01/05 19:15:03 alex
+ * - Fehlerpruefung bei select() in der "Hauptschleife" korrigiert.
+ *
+ * Revision 1.30 2002/01/05 15:56:23 alex
+ * - "arpa/inet.h" wird nur noch includiert, wenn vorhanden.
+ * - Ein Fehler bei select() fuerht nun zum Abbruch von ngIRCd.
+ * - NO_ADDRESS durch NO_DATA ersetzt: ist wohl portabler.
+ *
+ * Revision 1.29 2002/01/04 01:36:40 alex
+ * - Loglevel ein wenig angepasst.
+ *
+ * Revision 1.28 2002/01/04 01:20:23 alex
+ * - Client-Strukruren werden nur noch ueber Funktionen angesprochen.
+ *
+ * Revision 1.27 2002/01/03 02:25:36 alex
+ * - diverse Aenderungen und Umsetellungen fuer Server-Links.
+ *
+ * Revision 1.26 2002/01/02 02:50:47 alex
+ * - Asyncroner Resolver Hostname->IP.
+ * - Server-Links begonnen zu implementieren. Die Verbindung wird aufgebaut,
+ * jedoch noch keine SERVER-Befehle verschickt.
+ * - Diverse Bug-Fixes und kleinere Erweiterungen.
*
* Revision 1.24 2002/01/01 18:25:44 alex
* - #include's fuer stdlib.h ergaenzt.
#include <sys/types.h>
#include <time.h>
#include <netinet/in.h>
-#include <arpa/inet.h>
#include <netdb.h>
+#ifdef HAVE_ARPA_INET_H
+#include <arpa/inet.h>
+#else
+#define PF_INET AF_INET
+#endif
+
#ifdef HAVE_STDINT_H
#include <stdint.h> /* u.a. fuer Mac OS X */
#endif
INT i;
/* Sockets schliessen */
+ Log( LOG_DEBUG, "Shutting down all connections ..." );
for( i = 0; i < My_Max_Fd + 1; i++ )
{
if( FD_ISSET( i, &My_Sockets ))
{
if( My_Connections[idx].sock == i ) break;
}
- if( idx < MAX_CONNECTIONS ) Conn_Close( idx, "Server going down ..." );
+ if( idx < MAX_CONNECTIONS ) Conn_Close( idx, NULL, "Server going down", TRUE );
else if( FD_ISSET( i, &My_Listeners ))
{
close( i );
- Log( LOG_INFO, "Listening socket %d closed.", i );
+ Log( LOG_DEBUG, "Listening socket %d closed.", i );
}
else
{
sock = socket( PF_INET, SOCK_STREAM, 0);
if( sock < 0 )
{
- Log( LOG_ALERT, "Can't create socket: %s!", strerror( errno ));
+ Log( LOG_CRIT, "Can't create socket: %s!", strerror( errno ));
return FALSE;
}
/* Socket-Optionen setzen */
if( fcntl( sock, F_SETFL, O_NONBLOCK ) != 0 )
{
- Log( LOG_ALERT, "Can't enable non-blocking mode: %s!", strerror( errno ));
+ Log( LOG_CRIT, "Can't enable non-blocking mode: %s!", strerror( errno ));
close( sock );
return FALSE;
}
if( setsockopt( sock, SOL_SOCKET, SO_REUSEADDR, &on, (socklen_t)sizeof( on )) != 0)
{
- Log( LOG_CRIT, "Can't set socket options: %s!", strerror( errno ));
+ Log( LOG_ERR, "Can't set socket options: %s!", strerror( errno ));
/* dieser Fehler kann ignoriert werden. */
}
/* an Port binden */
if( bind( sock, (struct sockaddr *)&addr, (socklen_t)sizeof( addr )) != 0 )
{
- Log( LOG_ALERT, "Can't bind socket: %s!", strerror( errno ));
+ Log( LOG_CRIT, "Can't bind socket: %s!", strerror( errno ));
close( sock );
return FALSE;
}
/* in "listen mode" gehen :-) */
if( listen( sock, 10 ) != 0 )
{
- Log( LOG_ALERT, "Can't listen on soecket: %s!", strerror( errno ));
+ Log( LOG_CRIT, "Can't listen on soecket: %s!", strerror( errno ));
close( sock );
return FALSE;
}
/* Auf Aktivitaet warten */
if( select( My_Max_Fd + 1, &read_sockets, &write_sockets, NULL, &tv ) == -1 )
{
- if( errno != EINTR ) Log( LOG_ALERT, "select(): %s!", strerror( errno ));
- return;
+ if( errno != EINTR )
+ {
+ Log( LOG_EMERG, "select(): %s!", strerror( errno ));
+ Log( LOG_ALERT, PACKAGE" exiting due to fatal errors!" );
+ exit( 1 );
+ }
+ continue;
}
/* Koennen Daten geschrieben werden? */
va_start( ap, Format );
if( vsnprintf( buffer, COMMAND_LEN - 2, Format, ap ) == COMMAND_LEN - 2 )
{
- Log( LOG_ALERT, "String too long to send (connection %d)!", Idx );
- Conn_Close( Idx, "Server error: String too long to send!" );
+ Log( LOG_CRIT, "Text too long to send (connection %d)!", Idx );
+ Conn_Close( Idx, "Text too long to send!", NULL, FALSE );
return FALSE;
}
#ifdef SNIFFER
- Log( LOG_DEBUG, " -> connection %d: '%s'.", Idx, buffer );
+ if( NGIRCd_Sniffer ) Log( LOG_DEBUG, " -> connection %d: '%s'.", Idx, buffer );
#endif
strcat( buffer, "\r\n" );
{
/* der Puffer ist dummerweise voll ... */
Log( LOG_NOTICE, "Write buffer overflow (connection %d)!", Idx );
- Conn_Close( Idx, NULL );
+ Conn_Close( Idx, "Write buffer overflow!", NULL, FALSE );
return FALSE;
}
} /* Conn_Write */
-GLOBAL VOID Conn_Close( CONN_ID Idx, CHAR *Msg )
+GLOBAL VOID Conn_Close( CONN_ID Idx, CHAR *LogMsg, CHAR *FwdMsg, BOOLEAN InformClient )
{
/* Verbindung schliessen. Evtl. noch von Resolver
* Sub-Prozessen offene Pipes werden geschlossen. */
assert( Idx >= 0 );
assert( My_Connections[Idx].sock > NONE );
- if( Msg )
+ if( InformClient )
{
- Conn_WriteStr( Idx, "ERROR :%s", Msg );
+ if( FwdMsg ) Conn_WriteStr( Idx, "ERROR :%s", FwdMsg );
+ else Conn_WriteStr( Idx, "ERROR :Closing connection." );
if( My_Connections[Idx].sock == NONE ) return;
}
}
else
{
- Log( LOG_NOTICE, "Connection %d with %s:%d closed.", Idx, inet_ntoa( My_Connections[Idx].addr.sin_addr ), ntohs( My_Connections[Idx].addr.sin_port ));
+ Log( LOG_INFO, "Connection %d with %s:%d closed.", Idx, inet_ntoa( My_Connections[Idx].addr.sin_addr ), ntohs( My_Connections[Idx].addr.sin_port ));
}
c = Client_GetFromConn( Idx );
- if( c ) Client_Destroy( c );
+ if( c ) Client_Destroy( c, LogMsg, FwdMsg );
if( My_Connections[Idx].res_stat )
{
} /* Conn_GetIdle */
+GLOBAL INT32 Conn_LastPing( CONN_ID Idx )
+{
+ /* Zeitpunkt des letzten PING liefern */
+
+ assert( Idx >= 0 );
+ return My_Connections[Idx].lastping;
+} /* Conn_LastPing */
+
+
LOCAL BOOLEAN Try_Write( CONN_ID Idx )
{
/* Versuchen, Daten aus dem Schreib-Puffer in den
/* Fehler! */
if( errno != EINTR )
{
- Log( LOG_ALERT, "select(): %s!", strerror( errno ));
- Conn_Close( Idx, NULL );
+ Log( LOG_ALERT, "select() failed: %s!", strerror( errno ));
+ Conn_Close( Idx, "Server error!", NULL, FALSE );
return FALSE;
}
}
if( len < 0 )
{
/* Oops, ein Fehler! */
- Log( LOG_ALERT, "Write error (buffer) on connection %d: %s!", Idx, strerror( errno ));
- Conn_Close( Idx, NULL );
+ Log( LOG_ERR, "Write error (buffer) on connection %d: %s!", Idx, strerror( errno ));
+ Conn_Close( Idx, "Write error (buffer)!", NULL, FALSE );
return FALSE;
}
INT new_sock, new_sock_len;
RES_STAT *s;
CONN_ID idx;
-
+
assert( Sock >= 0 );
new_sock_len = sizeof( new_addr );
}
/* Client-Struktur initialisieren */
- if( ! Client_NewLocal( idx, inet_ntoa( new_addr.sin_addr )))
+ if( ! Client_NewLocal( idx, inet_ntoa( new_addr.sin_addr ), CLIENT_UNKNOWN, FALSE ))
{
Log( LOG_ALERT, "Can't accept connection: can't create client structure!" );
close( new_sock );
FD_SET( new_sock, &My_Sockets );
if( new_sock > My_Max_Fd ) My_Max_Fd = new_sock;
- Log( LOG_NOTICE, "Accepted connection %d from %s:%d on socket %d.", idx, inet_ntoa( new_addr.sin_addr ), ntohs( new_addr.sin_port), Sock );
+ 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 );
/* Hostnamen ermitteln */
s = ResolveAddr( &new_addr );
assert( Idx >= 0 );
assert( My_Connections[Idx].sock > NONE );
- len = recv( My_Connections[Idx].sock, My_Connections[Idx].rbuf + My_Connections[Idx].rdatalen, READBUFFER_LEN - My_Connections[Idx].rdatalen - 1, 0 );
- My_Connections[Idx].rbuf[READBUFFER_LEN - 1] = '\0';
+ if( READBUFFER_LEN - My_Connections[Idx].rdatalen - 2 < 0 )
+ {
+ /* Der Lesepuffer ist voll */
+ Log( LOG_ERR, "Read buffer overflow (connection %d): %d bytes!", Idx, My_Connections[Idx].rdatalen );
+ Conn_Close( Idx, "Read buffer overflow!", NULL, FALSE );
+ return;
+ }
+
+ len = recv( My_Connections[Idx].sock, My_Connections[Idx].rbuf + My_Connections[Idx].rdatalen, READBUFFER_LEN - My_Connections[Idx].rdatalen - 2, 0 );
if( len == 0 )
{
/* Socket wurde geschlossen */
Log( LOG_INFO, "%s:%d is closing the connection ...", inet_ntoa( My_Connections[Idx].addr.sin_addr ), ntohs( My_Connections[Idx].addr.sin_port));
- Conn_Close( Idx, NULL );
+ Conn_Close( Idx, "Socket closed.", NULL, FALSE );
return;
}
if( len < 0 )
{
/* Fehler beim Lesen */
- Log( LOG_ALERT, "Read error on connection %d: %s!", Idx, strerror( errno ));
- Conn_Close( Idx, NULL );
+ Log( LOG_ERR, "Read error on connection %d: %s!", Idx, strerror( errno ));
+ Conn_Close( Idx, "Read error!", NULL, FALSE );
return;
}
/* Lesebuffer updaten */
My_Connections[Idx].rdatalen += len;
- assert( My_Connections[Idx].rdatalen <= READBUFFER_LEN );
+ assert( My_Connections[Idx].rdatalen < READBUFFER_LEN );
My_Connections[Idx].rbuf[My_Connections[Idx].rdatalen] = '\0';
- if( My_Connections[Idx].rdatalen > COMMAND_LEN )
- {
- /* Eine Anfrage darf(!) nicht laenger als 512 Zeichen
- * (incl. CR+LF!) werden; vgl. RFC 2812. Wenn soetwas
- * empfangen wird, wird der Client disconnectiert. */
- Log( LOG_ALERT, "Request too long (connection %d)!", Idx );
- Conn_Close( Idx, "Request too long!" );
- return;
- }
-
/* Timestamp aktualisieren */
My_Connections[Idx].lastdata = time( NULL );
ptr = strstr( My_Connections[Idx].rbuf, "\r\n" );
if( ptr ) delta = 2;
+#ifndef STRICT_RFC
else
{
/* Nicht RFC-konforme Anfrage mit nur CR oder LF? Leider
else if( ptr1 ) ptr = ptr1;
else if( ptr2 ) ptr = ptr2;
}
-
+#endif
+
if( ptr )
{
/* Ende der Anfrage wurde gefunden */
*ptr = '\0';
len = ( ptr - My_Connections[Idx].rbuf ) + delta;
+ if( len > COMMAND_LEN )
+ {
+ /* Eine Anfrage darf(!) nicht laenger als 512 Zeichen
+ * (incl. CR+LF!) werden; vgl. RFC 2812. Wenn soetwas
+ * empfangen wird, wird der Client disconnectiert. */
+ Log( LOG_ERR, "Request too long (connection %d): %d bytes!", Idx, My_Connections[Idx].rdatalen );
+ Conn_Close( Idx, NULL, "Request too long", TRUE );
+ return;
+ }
+
if( len > delta )
{
/* Es wurde ein Request gelesen */
if( My_Connections[i].sock == NONE ) continue;
c = Client_GetFromConn( i );
- if( c && (( c->type == CLIENT_USER ) || ( c->type == CLIENT_SERVER ) || ( c->type == CLIENT_SERVICE )))
+ if( c && (( Client_Type( c ) == CLIENT_USER ) || ( Client_Type( c ) == CLIENT_SERVER ) || ( Client_Type( c ) == CLIENT_SERVICE )))
{
/* verbundener User, Server oder Service */
if( My_Connections[i].lastping > My_Connections[i].lastdata )
if( My_Connections[i].lastping < time( NULL ) - Conf_PongTimeout )
{
/* Timeout */
- Log( LOG_INFO, "Connection %d: PING timeout.", i );
- Conn_Close( i, "PING timeout" );
+ Log( LOG_DEBUG, "Connection %d: Ping timeout.", i );
+ Conn_Close( i, NULL, "Ping timeout", TRUE );
}
}
else if( My_Connections[i].lastdata < time( NULL ) - Conf_PingTimeout )
/* es muss ein PING gesendet werden */
Log( LOG_DEBUG, "Connection %d: sending PING ...", i );
My_Connections[i].lastping = time( NULL );
- Conn_WriteStr( i, "PING :%s", This_Server->nick );
+ Conn_WriteStr( i, "PING :%s", Client_ID( Client_ThisServer( )));
}
}
else
{
/* Timeout */
Log( LOG_INFO, "Connection %d: Timeout.", i );
- Conn_Close( i, "Timeout" );
+ Conn_Close( i, NULL, "Timeout", TRUE );
}
}
}
INT idx, i, n;
RES_STAT *s;
+
+ /* Wenn "Passive-Mode" aktiv: nicht verbinden */
+ if( NGIRCd_Passive ) return;
for( i = 0; i < Conf_Server_Count; i++ )
{
struct sockaddr_in new_addr;
struct in_addr inaddr;
INT new_sock;
+ CLIENT *c;
assert( Server >= 0 );
assert( Idx >= 0 );
return;
}
- Log( LOG_INFO, "Establishing connection to \"%s\", %s (connection %d) ... ", Conf_Server[Server].host, Conf_Server[Server].ip, Idx );
+ 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 );
if( inet_aton( Conf_Server[Server].ip, &inaddr ) == 0 )
{
if ( new_sock < 0 )
{
Init_Conn_Struct( Idx );
- Log( LOG_ALERT, "Can't create socket: %s!", strerror( errno ));
+ Log( LOG_CRIT, "Can't create socket: %s!", strerror( errno ));
return;
}
if( connect( new_sock, (struct sockaddr *)&new_addr, sizeof( new_addr )) < 0)
{
close( new_sock );
Init_Conn_Struct( Idx );
- Log( LOG_ALERT, "Can't connect socket: %s!", strerror( errno ));
+ Log( LOG_CRIT, "Can't connect socket: %s!", strerror( errno ));
return;
}
/* Client-Struktur initialisieren */
- if( ! Client_NewLocal( Idx, inet_ntoa( new_addr.sin_addr )))
+ c = Client_NewLocal( Idx, inet_ntoa( new_addr.sin_addr ), CLIENT_UNKNOWNSERVER, FALSE );
+ if( ! c )
{
close( new_sock );
Init_Conn_Struct( Idx );
Log( LOG_ALERT, "Can't establish connection: can't create client structure!" );
return;
}
+ Client_SetIntroducer( c, c );
/* Verbindung registrieren */
My_Connections[Idx].sock = new_sock;
/* Neuen Socket registrieren */
FD_SET( new_sock, &My_Sockets );
if( new_sock > My_Max_Fd ) My_Max_Fd = new_sock;
+
+ /* PASS und SERVER verschicken */
+ Conn_WriteStr( Idx, "PASS %s "PASSSERVERADD, Conf_Server[Server].pwd );
+ Conn_WriteStr( Idx, "SERVER %s :%s", Conf_ServerName, Conf_ServerInfo );
} /* New_Server */
s = malloc( sizeof( RES_STAT ));
if( ! s )
{
- Log( LOG_ALERT, "Resolver: Can't alloc memory!" );
+ Log( LOG_EMERG, "Resolver: Can't allocate memory!" );
return NULL;
}
{
/* Fehler */
free( s );
- Log( LOG_ALERT, "Resolver: Can't fork: %s!", strerror( errno ));
+ Log( LOG_CRIT, "Resolver: Can't fork: %s!", strerror( errno ));
return NULL;
}
} /* ResolveAddr */
s = malloc( sizeof( RES_STAT ));
if( ! s )
{
- Log( LOG_ALERT, "Resolver: Can't alloc memory!" );
+ Log( LOG_EMERG, "Resolver: Can't allocate memory!" );
return NULL;
}
{
/* Fehler */
free( s );
- Log( LOG_ALERT, "Resolver: Can't fork: %s!", strerror( errno ));
+ Log( LOG_CRIT, "Resolver: Can't fork: %s!", strerror( errno ));
return NULL;
}
} /* ResolveName */
/* Antwort an Parent schreiben */
if( write( w_fd, hostname, strlen( hostname ) + 1 ) != ( strlen( hostname ) + 1 ))
{
- Log_Resolver( LOG_ALERT, "Resolver: Can't write to parent: %s!", strerror( errno ));
+ Log_Resolver( LOG_CRIT, "Resolver: Can't write to parent: %s!", strerror( errno ));
close( w_fd );
return;
}
/* Antwort an Parent schreiben */
if( write( w_fd, ip, strlen( ip ) + 1 ) != ( strlen( ip ) + 1 ))
{
- Log_Resolver( LOG_ALERT, "Resolver: Can't write to parent: %s!", strerror( errno ));
+ Log_Resolver( LOG_CRIT, "Resolver: Can't write to parent: %s!", strerror( errno ));
close( w_fd );
return;
}
{
/* Fehler beim Lesen aus der Pipe */
close( r_fd );
- Log( LOG_ALERT, "Resolver: Can't read result: %s!", strerror( errno ));
+ Log( LOG_CRIT, "Resolver: Can't read result: %s!", strerror( errno ));
return;
}
result[len] = '\0';
if( My_Connections[i].sock > NONE )
{
/* Eingehende Verbindung: Hostnamen setzen */
- strcpy( My_Connections[i].host, result );
c = Client_GetFromConn( i );
- if( c ) Client_SetHostname( c, result );
+ assert( c != NULL );
+ strcpy( My_Connections[i].host, result );
+ Client_SetHostname( c, result );
}
else
{
{
case HOST_NOT_FOUND:
return "host not found";
- case NO_ADDRESS:
+ case NO_DATA:
return "name valid but no IP address defined";
case NO_RECOVERY:
return "name server error";
projects / ngircd-alex.git / blobdiff