- Source in weitere Module fuer IRC-Befehle aufgesplitted.

1 files changed, 355 insertions, 0 deletions

diff --git a/src/ngircd/irc-server.c b/src/ngircd/irc-server.c
new file mode 100644
index 00000000..fcceccc6
--- /dev/null
+++ b/src/ngircd/irc-server.c
@@ -0,0 +1,355 @@
+/*
+ * ngIRCd -- The Next Generation IRC Daemon
+ * Copyright (c)2001,2002 by Alexander Barton (alex@barton.de)
+ *
+ * Dieses Programm ist freie Software. Sie koennen es unter den Bedingungen
+ * der GNU General Public License (GPL), wie von der Free Software Foundation
+ * herausgegeben, weitergeben und/oder modifizieren, entweder unter Version 2
+ * der Lizenz oder (wenn Sie es wuenschen) jeder spaeteren Version.
+ * Naehere Informationen entnehmen Sie bitter der Datei COPYING. Eine Liste
+ * der an ngIRCd beteiligten Autoren finden Sie in der Datei AUTHORS.
+ *
+ * $Id: irc-server.c,v 1.1 2002/03/03 17:15:11 alex Exp $
+ *
+ * irc-server.c: IRC-Befehle fuer Server-Links
+ *
+ * $Log: irc-server.c,v $
+ * Revision 1.1  2002/03/03 17:15:11  alex
+ * - Source in weitere Module fuer IRC-Befehle aufgesplitted.
+ *
+ */
+
+
+#include <portab.h>
+#include "global.h"
+
+#include <imp.h>
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "conf.h"
+#include "irc-write.h"
+#include "log.h"
+#include "messages.h"
+
+#include <exp.h>
+#include "irc-server.h"
+
+
+GLOBAL BOOLEAN IRC_SERVER( CLIENT *Client, REQUEST *Req )
+{
+	CHAR str[LINE_LEN], *ptr;
+	CLIENT *from, *c, *cl;
+	CL2CHAN *cl2chan;
+	INT max_hops, i;
+	CHANNEL *chan;
+	BOOLEAN ok;
+	
+	assert( Client != NULL );
+	assert( Req != NULL );
+
+	/* Fehler liefern, wenn kein lokaler Client */
+	if( Client_Conn( Client ) <= NONE ) return IRC_WriteStrClient( Client, ERR_UNKNOWNCOMMAND_MSG, Client_ID( Client ), Req->command );
+
+	if( Client_Type( Client ) == CLIENT_GOTPASSSERVER )
+	{
+		/* Verbindung soll als Server-Server-Verbindung registriert werden */
+		Log( LOG_DEBUG, "Connection %d: got SERVER command (new server link) ...", Client_Conn( Client ));
+
+		/* Falsche Anzahl Parameter? */
+		if(( Req->argc != 2 ) && ( Req->argc != 3 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
+
+		/* Ist dieser Server bei uns konfiguriert? */
+		for( i = 0; i < Conf_Server_Count; i++ ) if( strcasecmp( Req->argv[0], Conf_Server[i].name ) == 0 ) break;
+		if( i >= Conf_Server_Count )
+		{
+			/* Server ist nicht konfiguriert! */
+			Log( LOG_ERR, "Connection %d: Server \"%s\" not configured here!", Client_Conn( Client ), Req->argv[0] );
+			Conn_Close( Client_Conn( Client ), NULL, "Server not configured here", TRUE );
+			return DISCONNECTED;
+		}
+		if( strcmp( Client_Password( Client ), Conf_Server[i].pwd ) != 0 )
+		{
+			/* Falsches Passwort */
+			Log( LOG_ERR, "Connection %d: Bad password for server \"%s\"!", Client_Conn( Client ), Req->argv[0] );
+			Conn_Close( Client_Conn( Client ), NULL, "Bad password", TRUE );
+			return DISCONNECTED;
+		}
+		
+		/* Ist ein Server mit dieser ID bereits registriert? */
+		if( ! Client_CheckID( Client, Req->argv[0] )) return DISCONNECTED;
+
+		/* Server-Strukturen fuellen ;-) */
+		Client_SetID( Client, Req->argv[0] );
+		Client_SetHops( Client, 1 );
+		Client_SetInfo( Client, Req->argv[Req->argc - 1] );
+		
+		/* Meldet sich der Server bei uns an? */
+		if( Req->argc == 2 )
+		{
+			/* Unseren SERVER- und PASS-Befehl senden */
+			ok = TRUE;
+			if( ! IRC_WriteStrClient( Client, "PASS %s "PASSSERVERADD, Conf_Server[i].pwd )) ok = FALSE;
+			else ok = IRC_WriteStrClient( Client, "SERVER %s 1 :%s", Conf_ServerName, Conf_ServerInfo );
+			if( ! ok )
+			{
+				Conn_Close( Client_Conn( Client ), "Unexpected server behavior!", NULL, FALSE );
+				return DISCONNECTED;
+			}
+			Client_SetIntroducer( Client, Client );
+			Client_SetToken( Client, 1 );
+		}
+		else  Client_SetToken( Client, atoi( Req->argv[1] ));
+
+		Log( LOG_NOTICE, "Server \"%s\" registered (connection %d, 1 hop - direct link).", Client_ID( Client ), Client_Conn( Client ));
+
+		Client_SetType( Client, CLIENT_SERVER );
+
+		/* maximalen Hop Count ermitteln */
+		max_hops = 0;
+		c = Client_First( );
+		while( c )
+		{
+			if( Client_Hops( c ) > max_hops ) max_hops = Client_Hops( c );
+			c = Client_Next( c );
+		}
+		
+		/* Alle bisherigen Server dem neuen Server bekannt machen,
+		 * die bisherigen Server ueber den neuen informierenn */
+		for( i = 0; i < ( max_hops + 1 ); i++ )
+		{
+			c = Client_First( );
+			while( c )
+			{
+				if(( Client_Type( c ) == CLIENT_SERVER ) && ( c != Client ) && ( c != Client_ThisServer( )) && ( Client_Hops( c ) == i ))
+				{
+					if( Client_Conn( c ) > NONE )
+					{
+						/* Dem gefundenen Server gleich den neuen
+						 * Server bekannt machen */
+						if( ! IRC_WriteStrClient( c, "SERVER %s %d %d :%s", Client_ID( Client ), Client_Hops( Client ) + 1, Client_MyToken( Client ), Client_Info( Client ))) return DISCONNECTED;
+					}
+					
+					/* Den neuen Server ueber den alten informieren */
+					if( ! IRC_WriteStrClientPrefix( Client, Client_Hops( c ) == 1 ? Client_ThisServer( ) : Client_Introducer( c ), "SERVER %s %d %d :%s", Client_ID( c ), Client_Hops( c ) + 1, Client_MyToken( c ), Client_Info( c ))) return DISCONNECTED;
+				}
+				c = Client_Next( c );
+			}
+		}
+
+		/* alle User dem neuen Server bekannt machen */
+		c = Client_First( );
+		while( c )
+		{
+			if( Client_Type( c ) == CLIENT_USER )
+			{
+				/* User an neuen Server melden */
+				if( ! IRC_WriteStrClient( Client, "NICK %s %d %s %s %d +%s :%s", Client_ID( c ), Client_Hops( c ) + 1, Client_User( c ), Client_Hostname( c ), Client_MyToken( Client_Introducer( c )), Client_Modes( c ), Client_Info( c ))) return DISCONNECTED;
+			}
+			c = Client_Next( c );
+		}
+
+		/* Channels dem neuen Server bekannt machen */
+		chan = Channel_First( );
+		while( chan )
+		{
+			sprintf( str, "NJOIN %s :", Channel_Name( chan ));
+
+			/* alle Member suchen */
+			cl2chan = Channel_FirstMember( chan );
+			while( cl2chan )
+			{
+				cl = Channel_GetClient( cl2chan );
+				assert( cl != NULL );
+
+				/* Nick, ggf. mit Modes, anhaengen */
+				if( str[strlen( str ) - 1] != ':' ) strcat( str, "," );
+				if( strchr( Channel_UserModes( chan, cl ), 'v' )) strcat( str, "+" );
+				if( strchr( Channel_UserModes( chan, cl ), 'o' )) strcat( str, "@" );
+				strcat( str, Client_ID( cl ));
+
+				if( strlen( str ) > ( LINE_LEN - CLIENT_NICK_LEN - 4 ))
+				{
+					/* Zeile senden */
+					if( ! IRC_WriteStrClient( Client, str )) return DISCONNECTED;
+					sprintf( str, "NJOIN %s :", Channel_Name( chan ));
+				}
+				
+				cl2chan = Channel_NextMember( chan, cl2chan );
+			}
+
+			/* noch Daten da? */
+			if( str[strlen( str ) - 1] != ':')
+			{
+				/* Ja; Also senden ... */
+				if( ! IRC_WriteStrClient( Client, str )) return DISCONNECTED;
+			}
+
+			/* naechsten Channel suchen */
+			chan = Channel_Next( chan );
+		}
+		
+		return CONNECTED;
+	}
+	else if( Client_Type( Client ) == CLIENT_SERVER )
+	{
+		/* Neuer Server wird im Netz angekuendigt */
+
+		/* Falsche Anzahl Parameter? */
+		if( Req->argc != 4 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
+
+		/* Ist ein Server mit dieser ID bereits registriert? */
+		if( ! Client_CheckID( Client, Req->argv[0] )) return DISCONNECTED;
+
+		/* Ueberfluessige Hostnamen aus Info-Text entfernen */
+		ptr = strchr( Req->argv[3] + 2, '[' );
+		if( ! ptr ) ptr = Req->argv[3];
+
+		from = Client_GetFromID( Req->prefix );
+		if( ! from )
+		{
+			/* Hm, Server, der diesen einfuehrt, ist nicht bekannt!? */
+			Log( LOG_ALERT, "Unknown ID in prefix of SERVER: \"%s\"! (on connection %d)", Req->prefix, Client_Conn( Client ));
+			Conn_Close( Client_Conn( Client ), NULL, "Unknown ID in prefix of SERVER", TRUE );
+			return DISCONNECTED;
+		}
+
+		/* Neue Client-Struktur anlegen */
+		c = Client_NewRemoteServer( Client, Req->argv[0], from, atoi( Req->argv[1] ), atoi( Req->argv[2] ), ptr, TRUE );
+		if( ! c )
+		{
+			/* Neue Client-Struktur konnte nicht angelegt werden */
+			Log( LOG_ALERT, "Can't create client structure for server! (on connection %d)", Client_Conn( Client ));
+			Conn_Close( Client_Conn( Client ), NULL, "Can't allocate client structure for remote server", TRUE );
+			return DISCONNECTED;
+		}
+
+		/* Log-Meldung zusammenbauen und ausgeben */
+		if(( Client_Hops( c ) > 1 ) && ( Req->prefix[0] )) sprintf( str, "connected to %s, ", Client_ID( from ));
+		else strcpy( str, "" );
+		Log( LOG_NOTICE, "Server \"%s\" registered (via %s, %s%d hop%s).", Client_ID( c ), Client_ID( Client ), str, Client_Hops( c ), Client_Hops( c ) > 1 ? "s": "" );
+
+		/* Andere Server informieren */
+		IRC_WriteStrServersPrefix( Client, from, "SERVER %s %d %d :%s", Client_ID( c ), Client_Hops( c ) + 1, Client_MyToken( c ), Client_Info( c ));
+
+		return CONNECTED;
+	}
+	else return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
+} /* IRC_SERVER */
+
+
+GLOBAL BOOLEAN IRC_NJOIN( CLIENT *Client, REQUEST *Req )
+{
+	CHAR *channame, *ptr, modes[8];
+	BOOLEAN is_op, is_voiced;
+	CHANNEL *chan;
+	CLIENT *c;
+	
+	assert( Client != NULL );
+	assert( Req != NULL );
+
+	if( Client_Type( Client ) != CLIENT_SERVER ) return IRC_WriteStrClient( Client, ERR_NOTREGISTEREDSERVER_MSG, Client_ID( Client ));
+
+	/* Falsche Anzahl Parameter? */
+	if( Req->argc != 2 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
+
+	channame = Req->argv[0];
+	ptr = strtok( Req->argv[1], "," );
+	while( ptr )
+	{
+		is_op = is_voiced = FALSE;
+		
+		/* Prefixe abschneiden */
+		while(( *ptr == '@' ) || ( *ptr == '+' ))
+		{
+			if( *ptr == '@' ) is_op = TRUE;
+			if( *ptr == '+' ) is_voiced = TRUE;
+			ptr++;
+		}
+
+		c = Client_GetFromID( ptr );
+		if( c )
+		{
+			Channel_Join( c, channame );
+			chan = Channel_Search( channame );
+			assert( chan != NULL );
+			
+			if( is_op ) Channel_UserModeAdd( chan, c, 'o' );
+			if( is_voiced ) Channel_UserModeAdd( chan, c, 'v' );
+
+			/* im Channel bekannt machen */
+			IRC_WriteStrChannelPrefix( Client, chan, c, FALSE, "JOIN :%s", channame );
+
+			/* Channel-User-Modes setzen */
+			strcpy( modes, Channel_UserModes( chan, c ));
+			if( modes[0] )
+			{
+				/* Modes im Channel bekannt machen */
+				IRC_WriteStrChannelPrefix( Client, chan, Client, FALSE, "MODE %s +%s %s", channame, modes, Client_ID( c ));
+			}
+		}
+		else Log( LOG_ERR, "Got NJOIN for unknown nick \"%s\" for channel \"%s\"!", ptr, channame );
+		
+		/* naechsten Nick suchen */
+		ptr = strtok( NULL, "," );
+	}
+
+	/* an andere Server weiterleiten */
+	IRC_WriteStrServersPrefix( Client, Client_ThisServer( ), "NJOIN %s :%s", Req->argv[0], Req->argv[1] );
+
+	return CONNECTED;
+} /* IRC_NJOIN */
+
+
+GLOBAL BOOLEAN IRC_SQUIT( CLIENT *Client, REQUEST *Req )
+{
+	CLIENT *target;
+	CHAR msg[LINE_LEN + 64];
+
+	assert( Client != NULL );
+	assert( Req != NULL );
+
+	/* SQUIT ist nur fuer Server erlaubt */
+	if( Client_Type( Client ) != CLIENT_SERVER ) return IRC_WriteStrClient( Client, ERR_NOTREGISTERED_MSG, Client_ID( Client ));
+
+	/* Falsche Anzahl Parameter? */
+	if( Req->argc != 2 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
+
+	Log( LOG_DEBUG, "Got SQUIT from %s for \"%s\": \"%s\" ...", Client_ID( Client ), Req->argv[0], Req->argv[1] );
+
+	/* SQUIT an alle Server weiterleiten */
+	IRC_WriteStrServers( Client, "SQUIT %s :%s", Req->argv[0], Req->argv[1] );
+
+	target = Client_GetFromID( Req->argv[0] );
+	if( ! target )
+	{
+		Log( LOG_ERR, "Got SQUIT from %s for unknown server \"%s\"!?", Client_ID( Client ), Req->argv[0] );
+		return CONNECTED;
+	}
+
+	if( Req->argv[1][0] )
+	{
+		if( strlen( Req->argv[1] ) > LINE_LEN ) Req->argv[1][LINE_LEN] = '\0';
+		sprintf( msg, "%s (SQUIT from %s).", Req->argv[1], Client_ID( Client ));
+	}
+	else sprintf( msg, "Got SQUIT from %s.", Client_ID( Client ));
+
+	if( Client_Conn( target ) > NONE )
+	{
+		/* dieser Server hat die Connection */
+		if( Req->argv[1][0] ) Conn_Close( Client_Conn( target ), msg, Req->argv[1], TRUE );
+		else Conn_Close( Client_Conn( target ), msg, NULL, TRUE );
+		return DISCONNECTED;
+	}
+	else
+	{
+		/* Verbindung hielt anderer Server */
+		Client_Destroy( target, msg, Req->argv[1] );
+		return CONNECTED;
+	}
+} /* IRC_SQUIT */
+
+
+/* -eof- */