ngircd-tor/src/ngircd/irc.c

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/*
* ngIRCd -- The Next Generation IRC Daemon
* Copyright (c)2001 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 comBase beteiligten Autoren finden Sie in der Datei AUTHORS.
*
* $Id: irc.c,v 1.10 2001/12/26 22:48:53 alex Exp $
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*
* irc.c: IRC-Befehle
*
* $Log: irc.c,v $
* Revision 1.10 2001/12/26 22:48:53 alex
* - MOTD-Datei ist nun konfigurierbar und wird gelesen.
*
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* Revision 1.9 2001/12/26 14:45:37 alex
* - "Code Cleanups".
*
* Revision 1.8 2001/12/26 03:21:46 alex
* - PING/PONG-Befehle implementiert,
* - Meldungen ueberarbeitet: enthalten nun (fast) immer den Nick.
*
* Revision 1.7 2001/12/25 23:25:18 alex
* - und nochmal Aenderungen am Logging ;-)
*
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* 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.
*
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* Revision 1.1 2001/12/14 08:13:43 alex
* - neues Modul begonnen :-)
*/
#include <portab.h>
#include "global.h"
#include <imp.h>
#include <assert.h>
#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include "client.h"
#include "conf.h"
#include "log.h"
#include "messages.h"
#include "parse.h"
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#include <exp.h>
#include "irc.h"
#define CONNECTED TRUE
#define DISCONNECTED FALSE
LOCAL BOOLEAN Check_Valid_User( CLIENT *Client );
LOCAL BOOLEAN Hello_User( CLIENT *Client );
LOCAL BOOLEAN Show_MOTD( CLIENT *Client );
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GLOBAL VOID IRC_Init( VOID )
{
} /* IRC_Init */
GLOBAL VOID IRC_Exit( VOID )
{
} /* IRC_Exit */
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GLOBAL BOOLEAN IRC_WriteStrClient( CLIENT *Client, CLIENT *Prefix, CHAR *Format, ... )
{
/* Text an Clients, lokal bzw. remote, senden. */
CHAR buffer[1000];
BOOLEAN ok = CONNECTED;
va_list ap;
assert( Client != NULL );
assert( Format != NULL );
va_start( ap, Format );
if( Client->conn_id != NONE )
{
/* 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 );
}
else
{
/* Remote-Client */
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Log( LOG_EMERG, "not implemented: IRC_WriteStrClient()" );
}
va_end( ap );
return ok;
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} /* IRC_WriteStrClient */
GLOBAL BOOLEAN IRC_PASS( CLIENT *Client, REQUEST *Req )
{
assert( Client != NULL );
assert( Req != NULL );
if( Client->type == CLIENT_UNKNOWN )
{
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Log( LOG_DEBUG, "Connection %d: got PASS command ...", Client->conn_id );
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return IRC_WriteStrClient( Client, This_Server, ERR_UNKNOWNCOMMAND_MSG, Client_Name( Client ), Req->command );
}
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else return IRC_WriteStrClient( Client, This_Server, ERR_ALREADYREGISTRED_MSG, Client_Name( Client ));
} /* IRC_PASS */
GLOBAL BOOLEAN IRC_NICK( CLIENT *Client, REQUEST *Req )
{
assert( Client != NULL );
assert( Req != NULL );
if( Client->type != CLIENT_SERVER && Client->type != CLIENT_SERVICE )
{
/* Falsche Anzahl Parameter? */
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if( Req->argc != 1 ) return IRC_WriteStrClient( Client, This_Server, ERR_NEEDMOREPARAMS_MSG, Client_Name( Client ), Req->command );
/* pruefen, ob Nick bereits vergeben */
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if( ! Client_CheckNick( Client, Req->argv[0] )) return CONNECTED;
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/* Client-Nick registrieren */
strcpy( Client->nick, Req->argv[0] );
if( Client->type != CLIENT_USER )
{
/* Neuer Client */
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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;
}
return CONNECTED;
}
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else return IRC_WriteStrClient( Client, This_Server, ERR_ALREADYREGISTRED_MSG, Client_Name( Client ));
} /* IRC_NICK */
GLOBAL BOOLEAN IRC_USER( CLIENT *Client, REQUEST *Req )
{
assert( Client != NULL );
assert( Req != NULL );
if( Client->type == CLIENT_UNKNOWN || Client->type == CLIENT_GOTNICK || Client->type == CLIENT_GOTPASS )
{
/* Falsche Anzahl Parameter? */
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if( Req->argc != 4 ) return IRC_WriteStrClient( Client, This_Server, ERR_NEEDMOREPARAMS_MSG, Client_Name( Client ), Req->command );
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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';
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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 )
{
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return IRC_WriteStrClient( Client, This_Server, ERR_ALREADYREGISTRED_MSG, Client_Name( Client ));
}
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else return IRC_WriteStrClient( Client, This_Server, ERR_NOTREGISTERED_MSG, Client_Name( Client ));
} /* IRC_USER */
GLOBAL BOOLEAN IRC_QUIT( CLIENT *Client, REQUEST *Req )
{
assert( Client != NULL );
assert( Req != NULL );
if( Client->type != CLIENT_SERVER && Client->type != CLIENT_SERVICE )
{
/* Falsche Anzahl Parameter? */
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if( Req->argc > 1 ) return IRC_WriteStrClient( Client, This_Server, ERR_NEEDMOREPARAMS_MSG, Client_Name( Client ), Req->command );
Conn_Close( Client->conn_id, "Client wants to quit." );
return DISCONNECTED;
}
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else return IRC_WriteStrClient( Client, This_Server, ERR_NOTREGISTERED_MSG, Client_Name( Client ));
} /* IRC_QUIT */
GLOBAL BOOLEAN IRC_PING( CLIENT *Client, REQUEST *Req )
{
assert( Client != NULL );
assert( Req != NULL );
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return IRC_WriteStrClient( Client, This_Server, ERR_UNKNOWNCOMMAND_MSG, Client_Name( Client ), Req->command );
} /* IRC_PING */
GLOBAL BOOLEAN IRC_PONG( CLIENT *Client, REQUEST *Req )
{
assert( Client != NULL );
assert( Req != NULL );
if( ! Check_Valid_User( Client )) return CONNECTED;
/* Falsche Anzahl Parameter? */
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if( Req->argc < 1 ) return IRC_WriteStrClient( Client, This_Server, ERR_NOORIGIN_MSG, Client_Name( Client ));
if( Req->argc > 1 ) return IRC_WriteStrClient( Client, This_Server, ERR_NEEDMOREPARAMS_MSG, Client_Name( Client ), Req->command );
/* Der Connection-Timestamp wurde schon beim Lesen aus dem Socket
* aktualisiert, daher muss das hier nicht mehr gemacht werden. */
Log( LOG_DEBUG, "Connection %d: received PONG.", Client->conn_id );
return CONNECTED;
} /* IRC_PONG */
GLOBAL BOOLEAN IRC_MOTD( CLIENT *Client, REQUEST *Req )
{
assert( Client != NULL );
assert( Req != NULL );
if( ! Check_Valid_User( Client )) return CONNECTED;
/* Falsche Anzahl Parameter? */
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if( Req->argc != 0 ) return IRC_WriteStrClient( Client, This_Server, ERR_NEEDMOREPARAMS_MSG, Client_Name( Client ), Req->command );
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return Show_MOTD( Client );
} /* IRC_MOTD */
LOCAL BOOLEAN Check_Valid_User( CLIENT *Client )
{
assert( Client != NULL );
if( Client->type != CLIENT_USER )
{
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IRC_WriteStrClient( Client, This_Server, ERR_NOTREGISTERED_MSG, Client_Name( Client ));
return FALSE;
}
else return TRUE;
} /* Check_Valid_User */
LOCAL BOOLEAN Hello_User( CLIENT *Client )
{
assert( Client != NULL );
assert( Client->nick[0] );
Log( LOG_NOTICE, "User \"%s!%s@%s\" (%s) registered.", Client->nick, Client->user, Client->host, Client->name );
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IRC_WriteStrClient( Client, This_Server, RPL_WELCOME_MSG, Client->nick, Client->nick, Client->user, Client->host );
IRC_WriteStrClient( Client, This_Server, RPL_YOURHOST_MSG, Client->nick, This_Server->host );
IRC_WriteStrClient( Client, This_Server, RPL_CREATED_MSG, Client->nick );
IRC_WriteStrClient( Client, This_Server, RPL_MYINFO_MSG, Client->nick, This_Server->host );
Client->type = CLIENT_USER;
return Show_MOTD( Client );
} /* Hello_User */
LOCAL BOOLEAN Show_MOTD( CLIENT *Client )
{
BOOLEAN ok;
CHAR line[127];
FILE *fd;
assert( Client != NULL );
assert( Client->nick[0] );
fd = fopen( Conf_MotdFile, "r" );
if( ! fd )
{
Log( LOG_WARNING, "Can't read MOTD file \"%s\": %s", Conf_MotdFile, strerror( errno ));
return IRC_WriteStrClient( Client, This_Server, ERR_NOMOTD_MSG, Client->nick );
}
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IRC_WriteStrClient( Client, This_Server, RPL_MOTDSTART_MSG, Client->nick, This_Server->host );
while( TRUE )
{
if( ! fgets( line, 126, fd )) break;
if( line[strlen( line ) - 1] == '\n' ) line[strlen( line ) - 1] = '\0';
IRC_WriteStrClient( Client, This_Server, RPL_MOTD_MSG, Client->nick, line );
}
ok = IRC_WriteStrClient( Client, This_Server, RPL_ENDOFMOTD_MSG, Client->nick );
fclose( fd );
return ok;
} /* Show_MOTD */
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/* -eof- */