/*
* 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.
+ * 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.
*
- * $Id: irc.c,v 1.6 2001/12/25 23:13:33 alex Exp $
- *
- * irc.c: IRC-Befehle
- *
- * $Log: irc.c,v $
- * Revision 1.6 2001/12/25 23:13:33 alex
- * - Debug-Meldungen angepasst.
- *
- * Revision 1.5 2001/12/25 22:02:42 alex
- * - neuer IRC-Befehl "/QUIT". Verbessertes Logging & Debug-Ausgaben.
- *
- * Revision 1.4 2001/12/25 19:19:30 alex
- * - bessere Fehler-Abfragen, diverse Bugfixes.
- * - Nicks werden nur einmal vergeben :-)
- * - /MOTD wird unterstuetzt.
- *
- * Revision 1.3 2001/12/24 01:34:06 alex
- * - USER und NICK wird nun in beliebiger Reihenfolge akzeptiert (wg. BitchX)
- * - MOTD-Ausgabe begonnen zu implementieren.
- *
- * Revision 1.2 2001/12/23 21:57:16 alex
- * - erste IRC-Befehle zu implementieren begonnen.
- *
- * Revision 1.1 2001/12/14 08:13:43 alex
- * - neues Modul begonnen :-)
+ * 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 <stdarg.h>
#include <stdio.h>
#include <string.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 "exp.h"
#include "irc.h"
-#define CONNECTED TRUE
-#define DISCONNECTED FALSE
-
-
-LOCAL BOOLEAN Check_Valid_User( CLIENT *Client );
+static char *Option_String PARAMS(( CONN_ID Idx ));
-LOCAL BOOLEAN Hello_User( CLIENT *Client );
-LOCAL BOOLEAN Show_MOTD( CLIENT *Client );
-
-GLOBAL VOID IRC_Init( VOID )
+GLOBAL bool
+IRC_ERROR( CLIENT *Client, REQUEST *Req )
{
-} /* IRC_Init */
+ 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] );
-GLOBAL VOID IRC_Exit( VOID )
-{
-} /* IRC_Exit */
+ return CONNECTED;
+} /* IRC_ERROR */
-GLOBAL BOOLEAN IRC_WriteStr_Client( CLIENT *Client, CLIENT *Prefix, CHAR *Format, ... )
+/**
+ * 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 )
{
- /* Text an Clients, lokal bzw. remote, senden. */
-
- CHAR buffer[1000];
- BOOLEAN ok = CONNECTED;
- va_list ap;
+ CLIENT *prefix, *c;
+ char reason[COMMAND_LEN], *msg;
+ CONN_ID my_conn, conn;
assert( Client != NULL );
- assert( Format != NULL );
-
- va_start( ap, Format );
+ assert( Req != NULL );
- if( Client->conn_id != NONE )
+ if(( Client_Type( Client ) != CLIENT_SERVER ) &&
+ ( ! Client_OperByMe( Client )))
{
- /* Lokaler Client */
- vsnprintf( buffer, 1000, Format, ap );
- if( Prefix ) ok = Conn_WriteStr( Client->conn_id, ":%s %s", Prefix->host, buffer );
- else ok = Conn_WriteStr( Client->conn_id, buffer );
+ /* 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 ));
}
- else
+
+ if( Req->argc != 2 )
{
- /* Remote-Client */
- Log( LOG_EMERG, "not implemented: IRC_WriteStr_Client()" );
+ /* This command requires exactly 2 parameters! */
+ return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG,
+ Client_ID( Client ), Req->command );
}
- va_end( ap );
- return ok;
-} /* IRC_WriteStr_Client */
-
-
-GLOBAL BOOLEAN IRC_PASS( CLIENT *Client, REQUEST *Req )
-{
- assert( Client != NULL );
- assert( Req != NULL );
+ 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->type == CLIENT_UNKNOWN )
+ if( Client != Client_ThisServer( ))
{
- Log( LOG_DEBUG, "Connection %d: got PASS command ...", Client->conn_id );
- return IRC_WriteStr_Client( Client, This_Server, ERR_UNKNOWNCOMMAND_MSG, Req->command );
+ /* 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] );
}
- else return IRC_WriteStr_Client( Client, This_Server, ERR_ALREADYREGISTRED_MSG );
-} /* IRC_PASS */
+ /* 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 ));
-GLOBAL BOOLEAN IRC_NICK( CLIENT *Client, REQUEST *Req )
-{
- CLIENT *c;
+ /* Inform other servers */
+ IRC_WriteStrServersPrefix( Client, prefix, "KILL %s :%s",
+ Req->argv[0], reason );
- assert( Client != NULL );
- assert( Req != NULL );
+ /* Save ID of this connection */
+ my_conn = Client_Conn( Client );
- if( Client->type != CLIENT_SERVER && Client->type != CLIENT_SERVICE )
+ /* Do we host such a client? */
+ c = Client_Search( Req->argv[0] );
+ if( c )
{
- /* Falsche Anzahl Parameter? */
- if( Req->argc != 1 ) return IRC_WriteStr_Client( Client, This_Server, ERR_NEEDMOREPARAMS_MSG );
-
- /* Nick zu lang? */
- if( strlen( Req->argv[0] ) > CLIENT_NICK_LEN ) return IRC_WriteStr_Client( Client, This_Server, ERR_ERRONEUSNICKNAME_MSG, Req->argv[0] );
-
- /* pruefen, ob Nick bereits vergeben */
- c = My_Clients;
- while( c )
+ if(( Client_Type( c ) != CLIENT_USER ) &&
+ ( Client_Type( c ) != CLIENT_GOTNICK ))
{
- if( strcasecmp( c->nick, Req->argv[0] ) == 0 )
+ /* 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( ))
{
- /* den Nick gibt es bereits */
- return IRC_WriteStr_Client( Client, This_Server, ERR_NICKNAMEINUSE_MSG, Req->argv[0] );
+ /* 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 ));
}
- c = c->next;
+
+ Log( LOG_ERR, "Got KILL for invalid client type: %d, \"%s\"!",
+ Client_Type( c ), Req->argv[0] );
}
- /* Client-Nick registrieren */
- strcpy( Client->nick, 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] );
- if( Client->type != CLIENT_USER )
- {
- /* Neuer Client */
- Log( LOG_DEBUG, "Connection %d: got NICK command ...", Client->conn_id );
- if( Client->type == CLIENT_GOTUSER ) return Hello_User( Client );
- else Client->type = CLIENT_GOTNICK;
- }
+ /* Are we still connected or were we killed, too? */
+ if(( my_conn > NONE ) && ( Client_GetFromConn( my_conn )))
return CONNECTED;
- }
- else return IRC_WriteStr_Client( Client, This_Server, ERR_ALREADYREGISTRED_MSG );
-} /* IRC_NICK */
+ else
+ return DISCONNECTED;
+} /* IRC_KILL */
-GLOBAL BOOLEAN IRC_USER( CLIENT *Client, REQUEST *Req )
+GLOBAL bool
+IRC_NOTICE( CLIENT *Client, REQUEST *Req )
{
+ CLIENT *to, *from;
+
assert( Client != NULL );
assert( Req != NULL );
- if( Client->type == CLIENT_UNKNOWN || Client->type == CLIENT_GOTNICK || Client->type == CLIENT_GOTPASS )
- {
- /* Falsche Anzahl Parameter? */
- if( Req->argc != 4 ) return IRC_WriteStr_Client( Client, This_Server, ERR_NEEDMOREPARAMS_MSG );
+ if(( Client_Type( Client ) != CLIENT_USER ) && ( Client_Type( Client ) != CLIENT_SERVER )) return CONNECTED;
- strncpy( Client->user, Req->argv[0], CLIENT_USER_LEN );
- Client->user[CLIENT_USER_LEN] = '\0';
- strncpy( Client->name, Req->argv[3], CLIENT_NAME_LEN );
- Client->name[CLIENT_NAME_LEN] = '\0';
+ /* Falsche Anzahl Parameter? */
+ if( Req->argc != 2 ) return CONNECTED;
- Log( LOG_DEBUG, "Connection %d: got USER command ...", Client->conn_id );
- if( Client->type == CLIENT_GOTNICK ) return Hello_User( Client );
- else Client->type = CLIENT_GOTUSER;
- return CONNECTED;
- }
- else if( Client->type == CLIENT_USER || Client->type == CLIENT_SERVER || Client->type == CLIENT_SERVICE )
+ 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 ))
{
- return IRC_WriteStr_Client( Client, This_Server, ERR_ALREADYREGISTRED_MSG );
+ /* Okay, Ziel ist ein User */
+ return IRC_WriteStrClientPrefix( to, from, "NOTICE %s :%s", Client_ID( to ), Req->argv[1] );
}
- else return IRC_WriteStr_Client( Client, This_Server, ERR_NOTREGISTERED_MSG );
-} /* IRC_USER */
+ else return CONNECTED;
+} /* IRC_NOTICE */
-GLOBAL BOOLEAN IRC_QUIT( CLIENT *Client, REQUEST *Req )
+GLOBAL bool
+IRC_PRIVMSG( CLIENT *Client, REQUEST *Req )
{
+ CLIENT *cl, *from;
+ CHANNEL *chan;
+
assert( Client != NULL );
assert( Req != NULL );
- if( Client->type != CLIENT_SERVER && Client->type != CLIENT_SERVICE )
+ /* 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 )
{
- /* Falsche Anzahl Parameter? */
- if( Req->argc > 1 ) return IRC_WriteStr_Client( Client, This_Server, ERR_NEEDMOREPARAMS_MSG );
+ /* 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] );
- Conn_Close( Client->conn_id, "Client wants to quit." );
- return DISCONNECTED;
+ /* 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] );
}
- else return IRC_WriteStr_Client( Client, This_Server, ERR_NOTREGISTERED_MSG );
-} /* IRC_QUIT */
+
+ 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 BOOLEAN IRC_MOTD( CLIENT *Client, REQUEST *Req )
+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 );
- if( ! Check_Valid_User( Client )) return CONNECTED;
+ /* Bad number of arguments? */
+ if( Req->argc > 1 ) return IRC_WriteStrClient( Client, ERR_NORECIPIENT_MSG, Client_ID( Client ), Req->command );
- /* Falsche Anzahl Parameter? */
- if( Req->argc != 0 ) return IRC_WriteStr_Client( Client, This_Server, ERR_NEEDMOREPARAMS_MSG );
+ /* 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 );
- return Show_MOTD( Client );
-} /* IRC_MOTD */
+ /* 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;
-LOCAL BOOLEAN Check_Valid_User( CLIENT *Client )
-{
- assert( Client != NULL );
+ /* Forward command */
+ IRC_WriteStrClientPrefix( target, from, "TRACE %s", Req->argv[0] );
+ return CONNECTED;
+ }
- if( Client->type != CLIENT_USER )
+ /* Infos about all connected servers */
+ c = Client_First( );
+ while( c )
{
- IRC_WriteStr_Client( Client, This_Server, ERR_NOTREGISTERED_MSG );
- return FALSE;
+ 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 );
}
- else return TRUE;
-} /* Check_Valid_User */
+
+ IRC_SetPenalty( Client, 3 );
+ return IRC_WriteStrClient( from, RPL_TRACEEND_MSG, Client_ID( from ), Conf_ServerName, PACKAGE_NAME, PACKAGE_VERSION, NGIRCd_DebugLevel );
+} /* IRC_TRACE */
-LOCAL BOOLEAN Hello_User( CLIENT *Client )
+GLOBAL bool
+IRC_HELP( CLIENT *Client, REQUEST *Req )
{
- Log( LOG_INFO, "User \"%s!%s@%s\" (%s) registered.", Client->nick, Client->user, Client->host, Client->name );
+ COMMAND *cmd;
- IRC_WriteStr_Client( Client, This_Server, RPL_WELCOME_MSG, Client->nick, Client->nick, Client->user, Client->host );
- IRC_WriteStr_Client( Client, This_Server, RPL_YOURHOST_MSG, Client->nick, This_Server->host );
- IRC_WriteStr_Client( Client, This_Server, RPL_CREATED_MSG, Client->nick );
- IRC_WriteStr_Client( Client, This_Server, RPL_MYINFO_MSG, Client->nick, This_Server->host );
+ assert( Client != NULL );
+ assert( Req != NULL );
- Client->type = CLIENT_USER;
+ /* Bad number of arguments? */
+ if( Req->argc > 0 ) return IRC_WriteStrClient( Client, ERR_NORECIPIENT_MSG, Client_ID( Client ), Req->command );
- return Show_MOTD( Client );
-} /* Hello_User */
+ 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 */
-LOCAL BOOLEAN Show_MOTD( CLIENT *Client )
+static char *
+Option_String( CONN_ID Idx )
{
- IRC_WriteStr_Client( Client, This_Server, RPL_MOTDSTART_MSG, Client->nick, This_Server->host );
- IRC_WriteStr_Client( Client, This_Server, RPL_MOTD_MSG, Client->nick, "Some cool IRC server welcome message ;-)" );
- return IRC_WriteStr_Client( Client, This_Server, RPL_ENDOFMOTD_MSG, Client->nick );
-} /* Show_MOTD */
+ 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