/*
* ngIRCd -- The Next Generation IRC Daemon
- * Copyright (c)2001 by Alexander Barton (alex@barton.de)
+ * Copyright (c)2001-2004 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 comBase beteiligten Autoren finden Sie in der Datei AUTHORS.
- *
- * $Id: irc.c,v 1.1 2001/12/14 08:13:43 alex Exp $
- *
- * irc.c: IRC-Befehle
- *
- * $Log: irc.c,v $
- * Revision 1.1 2001/12/14 08:13:43 alex
- * - neues Modul begonnen :-)
+ * 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
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * Please read the file COPYING, README and AUTHORS for more information.
*
+ * IRC commands
*/
-#include <portab.h>
-#include "global.h"
+#include "portab.h"
+
+static char UNUSED id[] = "$Id: irc.c,v 1.128 2005/08/02 23:19:22 alex Exp $";
-#include <imp.h>
+#include "imp.h"
#include <assert.h>
+#include <stdio.h>
+#include <string.h>
-#include <exp.h>
+#include "ngircd.h"
+#include "conn.h"
+#include "resolve.h"
+#include "conf.h"
+#include "conn-func.h"
+#include "client.h"
+#include "channel.h"
+#include "defines.h"
+#include "irc-write.h"
+#include "log.h"
+#include "messages.h"
+#include "parse.h"
+
+#include "exp.h"
#include "irc.h"
-GLOBAL VOID IRC_Init( VOID )
+static char *Option_String PARAMS(( CONN_ID Idx ));
+
+
+GLOBAL bool
+IRC_ERROR( CLIENT *Client, REQUEST *Req )
+{
+ assert( Client != NULL );
+ assert( Req != NULL );
+
+ if( Req->argc < 1 ) Log( LOG_NOTICE, "Got ERROR from \"%s\"!", Client_Mask( Client ));
+ else Log( LOG_NOTICE, "Got ERROR from \"%s\": %s!", Client_Mask( Client ), Req->argv[0] );
+
+ return CONNECTED;
+} /* IRC_ERROR */
+
+
+/**
+ * Kill client on request.
+ * This function implements the IRC command "KILL" wich is used to selectively
+ * disconnect clients. It can be used by IRC operators and servers, for example
+ * to "solve" nick collisions after netsplits.
+ * Please note that this function is also called internally, without a real
+ * KILL command beeing received over the network! Client is Client_ThisServer()
+ * in this case. */
+GLOBAL bool
+IRC_KILL( CLIENT *Client, REQUEST *Req )
{
-} /* IRC_Init */
+ CLIENT *prefix, *c;
+ char reason[COMMAND_LEN], *msg;
+ CONN_ID my_conn, conn;
+
+ assert( Client != NULL );
+ assert( Req != NULL );
+
+ if(( Client_Type( Client ) != CLIENT_SERVER ) &&
+ ( ! Client_OperByMe( Client )))
+ {
+ /* The originator of the KILL is neither an IRC operator of
+ * this server nor a server. */
+ return IRC_WriteStrClient( Client, ERR_NOPRIVILEGES_MSG,
+ Client_ID( Client ));
+ }
+
+ if( Req->argc != 2 )
+ {
+ /* This command requires exactly 2 parameters! */
+ return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG,
+ Client_ID( Client ), Req->command );
+ }
+
+ if( Req->prefix ) prefix = Client_Search( Req->prefix );
+ else prefix = Client;
+ if( ! prefix )
+ {
+ Log( LOG_WARNING, "Got KILL with invalid prefix: \"%s\"!",
+ Req->prefix );
+ prefix = Client_ThisServer( );
+ }
+ if( Client != Client_ThisServer( ))
+ {
+ /* This is a "real" KILL received from the network. */
+ Log( LOG_NOTICE|LOG_snotice, "Got KILL command from \"%s\" for \"%s\": %s",
+ Client_Mask( prefix ), Req->argv[0], Req->argv[1] );
+ }
-GLOBAL VOID IRC_Exit( VOID )
+ /* Build reason string */
+ if( Client_Type( Client ) == CLIENT_USER )
+ {
+ /* Prefix the "reason" if the originator is a regular user,
+ * so users can't spoof KILLs of servers. */
+ snprintf( reason, sizeof( reason ), "KILLed by %s: %s",
+ Client_ID( Client ), Req->argv[1] );
+ }
+ else
+ strlcpy( reason, Req->argv[1], sizeof( reason ));
+
+ /* Inform other servers */
+ IRC_WriteStrServersPrefix( Client, prefix, "KILL %s :%s",
+ Req->argv[0], reason );
+
+ /* Save ID of this connection */
+ my_conn = Client_Conn( Client );
+
+ /* Do we host such a client? */
+ c = Client_Search( Req->argv[0] );
+ if( c )
+ {
+ if(( Client_Type( c ) != CLIENT_USER ) &&
+ ( Client_Type( c ) != CLIENT_GOTNICK ))
+ {
+ /* Target of this KILL is not a regular user, this is
+ * invalid! So we ignore this case if we received a
+ * regular KILL from the network and try to kill the
+ * client/connection anyway (but log an error!) if the
+ * origin is the local server. */
+
+ if( Client != Client_ThisServer( ))
+ {
+ /* Invalid KILL received from remote */
+ if( Client_Type( c ) == CLIENT_SERVER )
+ msg = ERR_CANTKILLSERVER_MSG;
+ else
+ msg = ERR_NOPRIVILEGES_MSG;
+ return IRC_WriteStrClient( Client, msg,
+ Client_ID( Client ));
+ }
+
+ Log( LOG_ERR, "Got KILL for invalid client type: %d, \"%s\"!",
+ Client_Type( c ), Req->argv[0] );
+ }
+
+ /* Kill client NOW! */
+ conn = Client_Conn( c );
+ Client_Destroy( c, NULL, reason, false );
+ if( conn > NONE )
+ Conn_Close( conn, NULL, reason, true );
+ }
+ else
+ Log( LOG_NOTICE, "Client with nick \"%s\" is unknown here.", Req->argv[0] );
+
+ /* Are we still connected or were we killed, too? */
+ if(( my_conn > NONE ) && ( Client_GetFromConn( my_conn )))
+ return CONNECTED;
+ else
+ return DISCONNECTED;
+} /* IRC_KILL */
+
+
+GLOBAL bool
+IRC_NOTICE( CLIENT *Client, REQUEST *Req )
{
-} /* IRC_Exit */
+ CLIENT *to, *from;
+
+ assert( Client != NULL );
+ assert( Req != NULL );
+
+ if(( Client_Type( Client ) != CLIENT_USER ) && ( Client_Type( Client ) != CLIENT_SERVER )) return CONNECTED;
+
+ /* Falsche Anzahl Parameter? */
+ if( Req->argc != 2 ) return CONNECTED;
+
+ if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
+ else from = Client;
+ if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
+
+ to = Client_Search( Req->argv[0] );
+ if(( to ) && ( Client_Type( to ) == CLIENT_USER ))
+ {
+ /* Okay, Ziel ist ein User */
+ return IRC_WriteStrClientPrefix( to, from, "NOTICE %s :%s", Client_ID( to ), Req->argv[1] );
+ }
+ else return CONNECTED;
+} /* IRC_NOTICE */
+
+
+GLOBAL bool
+IRC_PRIVMSG( CLIENT *Client, REQUEST *Req )
+{
+ CLIENT *cl, *from;
+ CHANNEL *chan;
+
+ assert( Client != NULL );
+ assert( Req != NULL );
+
+ /* Falsche Anzahl Parameter? */
+ if( Req->argc == 0 ) return IRC_WriteStrClient( Client, ERR_NORECIPIENT_MSG, Client_ID( Client ), Req->command );
+ if( Req->argc == 1 ) return IRC_WriteStrClient( Client, ERR_NOTEXTTOSEND_MSG, Client_ID( Client ));
+ if( Req->argc > 2 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
+
+ if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
+ else from = Client;
+ if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
+
+ cl = Client_Search( Req->argv[0] );
+ if( cl )
+ {
+ /* Okay, Ziel ist ein Client. Aber ist es auch ein User? */
+ if( Client_Type( cl ) != CLIENT_USER ) return IRC_WriteStrClient( from, ERR_NOSUCHNICK_MSG, Client_ID( from ), Req->argv[0] );
+
+ /* Okay, Ziel ist ein User */
+ if(( Client_Type( Client ) != CLIENT_SERVER ) && ( strchr( Client_Modes( cl ), 'a' )))
+ {
+ /* Ziel-User ist AWAY: Meldung verschicken */
+ if( ! IRC_WriteStrClient( from, RPL_AWAY_MSG, Client_ID( from ), Client_ID( cl ), Client_Away( cl ))) return DISCONNECTED;
+ }
+
+ /* Text senden */
+ if( Client_Conn( from ) > NONE ) Conn_UpdateIdle( Client_Conn( from ));
+ return IRC_WriteStrClientPrefix( cl, from, "PRIVMSG %s :%s", Client_ID( cl ), Req->argv[1] );
+ }
+
+ chan = Channel_Search( Req->argv[0] );
+ if( chan ) return Channel_Write( chan, from, Client, Req->argv[1] );
+
+ return IRC_WriteStrClient( from, ERR_NOSUCHNICK_MSG, Client_ID( from ), Req->argv[0] );
+} /* IRC_PRIVMSG */
+
+
+GLOBAL bool
+IRC_TRACE( CLIENT *Client, REQUEST *Req )
+{
+ CLIENT *from, *target, *c;
+ CONN_ID idx, idx2;
+ char user[CLIENT_USER_LEN];
+
+ assert( Client != NULL );
+ assert( Req != NULL );
+
+ /* Bad number of arguments? */
+ if( Req->argc > 1 ) return IRC_WriteStrClient( Client, ERR_NORECIPIENT_MSG, Client_ID( Client ), Req->command );
+
+ /* Search sender */
+ if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
+ else from = Client;
+ if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
+
+ /* Search target */
+ if( Req->argc == 1 ) target = Client_Search( Req->argv[0] );
+ else target = Client_ThisServer( );
+
+ /* Forward command to other server? */
+ if( target != Client_ThisServer( ))
+ {
+ if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( from ), Req->argv[0] );
+
+ /* Send RPL_TRACELINK back to initiator */
+ idx = Client_Conn( Client ); assert( idx > NONE );
+ idx2 = Client_Conn( Client_NextHop( target )); assert( idx2 > NONE );
+ if( ! IRC_WriteStrClient( from, RPL_TRACELINK_MSG, Client_ID( from ), PACKAGE_NAME, PACKAGE_VERSION, Client_ID( target ), Client_ID( Client_NextHop( target )), Option_String( idx2 ), time( NULL ) - Conn_StartTime( idx2 ), Conn_SendQ( idx ), Conn_SendQ( idx2 ))) return DISCONNECTED;
+
+ /* Forward command */
+ IRC_WriteStrClientPrefix( target, from, "TRACE %s", Req->argv[0] );
+ return CONNECTED;
+ }
+
+ /* Infos about all connected servers */
+ c = Client_First( );
+ while( c )
+ {
+ if( Client_Conn( c ) > NONE )
+ {
+ /* Local client */
+ if( Client_Type( c ) == CLIENT_SERVER )
+ {
+ /* Server link */
+ strlcpy( user, Client_User( c ), sizeof( user ));
+ if( user[0] == '~' ) strlcpy( user, "unknown", sizeof( user ));
+ if( ! IRC_WriteStrClient( from, RPL_TRACESERVER_MSG, Client_ID( from ), Client_ID( c ), user, Client_Hostname( c ), Client_Mask( Client_ThisServer( )), Option_String( Client_Conn( c )))) return DISCONNECTED;
+ }
+ if(( Client_Type( c ) == CLIENT_USER ) && ( strchr( Client_Modes( c ), 'o' )))
+ {
+ /* IRC Operator */
+ if( ! IRC_WriteStrClient( from, RPL_TRACEOPERATOR_MSG, Client_ID( from ), Client_ID( c ))) return DISCONNECTED;
+ }
+ }
+ c = Client_Next( c );
+ }
+
+ IRC_SetPenalty( Client, 3 );
+ return IRC_WriteStrClient( from, RPL_TRACEEND_MSG, Client_ID( from ), Conf_ServerName, PACKAGE_NAME, PACKAGE_VERSION, NGIRCd_DebugLevel );
+} /* IRC_TRACE */
+
+
+GLOBAL bool
+IRC_HELP( CLIENT *Client, REQUEST *Req )
+{
+ COMMAND *cmd;
+
+ assert( Client != NULL );
+ assert( Req != NULL );
+
+ /* Bad number of arguments? */
+ if( Req->argc > 0 ) return IRC_WriteStrClient( Client, ERR_NORECIPIENT_MSG, Client_ID( Client ), Req->command );
+
+ cmd = Parse_GetCommandStruct( );
+ while( cmd->name )
+ {
+ if( ! IRC_WriteStrClient( Client, "NOTICE %s :%s", Client_ID( Client ), cmd->name )) return DISCONNECTED;
+ cmd++;
+ }
+
+ IRC_SetPenalty( Client, 2 );
+ return CONNECTED;
+} /* IRC_HELP */
+
+
+static char *
+Option_String( CONN_ID Idx )
+{
+ static char option_txt[8];
+ int options;
+
+ options = Conn_Options( Idx );
+
+ strcpy( option_txt, "F" ); /* No idea what this means but the original ircd sends it ... */
+#ifdef ZLIB
+ if( options & CONN_ZIP ) strcat( option_txt, "z" );
+#endif
+
+ return option_txt;
+} /* Option_String */
/* -eof- */
projects / ngircd-alex.git / blobdiff