123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346 |
- /*
- * ngIRCd -- The Next Generation IRC Daemon
- * Copyright (c)2001-2004 Alexander Barton <alex@barton.de>
- *
- * 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"
- static char UNUSED id[] = "$Id: irc.c,v 1.131 2006/07/23 14:55:40 alex Exp $";
- #include "imp.h"
- #include <assert.h>
- #include <stdio.h>
- #include <string.h>
- #include "ngircd.h"
- #include "resolve.h"
- #include "conn-func.h"
- #include "conf.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"
- 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 )
- {
- 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] );
- }
- /* 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 ) && ( Conn_GetClient( my_conn )))
- return CONNECTED;
- else
- return DISCONNECTED;
- } /* IRC_KILL */
- GLOBAL bool
- IRC_NOTICE( CLIENT *Client, REQUEST *Req )
- {
- 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];
- UINT16 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) /* zlib compression supported. */
- strcat(option_txt, "z");
- #endif
- return option_txt;
- } /* Option_String */
- /* -eof- */
|