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- /*
- * ngIRCd -- The Next Generation IRC Daemon
- * Copyright (c)2001,2002 by 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 channel commands
- */
- #include "portab.h"
- static char UNUSED id[] = "$Id: irc-channel.c,v 1.35 2006/03/16 20:14:16 fw Exp $";
- #include "imp.h"
- #include <assert.h>
- #include <stdlib.h>
- #include <stdio.h>
- #include <string.h>
- #include "defines.h"
- #include "conn.h"
- #include "client.h"
- #include "channel.h"
- #include "lists.h"
- #include "log.h"
- #include "match.h"
- #include "messages.h"
- #include "parse.h"
- #include "irc-info.h"
- #include "irc-write.h"
- #include "resolve.h"
- #include "conf.h"
- #include "exp.h"
- #include "irc-channel.h"
- GLOBAL bool
- IRC_JOIN( CLIENT *Client, REQUEST *Req )
- {
- char *channame, *channame_ptr, *key, *key_ptr, *flags, *topic, modes[8];
- bool is_new_chan, is_invited, is_banned;
- CLIENT *target;
- CHANNEL *chan;
-
- assert( Client != NULL );
- assert( Req != NULL );
- /* Bad number of arguments? */
- if(( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
- /* Who is the sender? */
- if( Client_Type( Client ) == CLIENT_SERVER ) target = Client_Search( Req->prefix );
- else target = Client;
- if( ! target ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
- /* Are channel keys given? */
- if (Req->argc > 1) {
- key = Req->argv[1];
- key_ptr = strchr(key, ',');
- if (key_ptr) *key_ptr = '\0';
- }
- else
- key = key_ptr = NULL;
- channame = Req->argv[0];
- channame_ptr = strchr(channame, ',');
- if (channame_ptr) *channame_ptr = '\0';
- /* Channel-Namen durchgehen */
- while (channame)
- {
- chan = NULL; flags = NULL;
- /* wird der Channel neu angelegt? */
- if( Channel_Search( channame )) is_new_chan = false;
- else is_new_chan = true;
- /* Hat ein Server Channel-User-Modes uebergeben? */
- if( Client_Type( Client ) == CLIENT_SERVER )
- {
- /* Channel-Flags extrahieren */
- flags = strchr( channame, 0x7 );
- if( flags )
- {
- *flags = '\0';
- flags++;
- }
- }
- /* Local client? */
- if( Client_Type( Client ) == CLIENT_USER )
- {
- /* Test if the user has reached his maximum channel count */
- if(( Conf_MaxJoins > 0 ) && ( Channel_CountForUser( Client ) >= Conf_MaxJoins ))
- return IRC_WriteStrClient( Client, ERR_TOOMANYCHANNELS_MSG,
- Client_ID( Client ), channame );
- /* Existiert der Channel bereits, oder wird er im Moment neu erzeugt? */
- if( is_new_chan )
- {
- /* Erster User im Channel: Operator-Flag setzen */
- flags = "o";
- }
- else
- {
- /* Existierenden Channel suchen */
- chan = Channel_Search( channame );
- assert( chan != NULL );
- is_banned = Lists_CheckBanned( target, chan );
- is_invited = Lists_CheckInvited( target, chan );
- /* Testen, ob Client gebanned ist */
- if(( is_banned == true) && ( is_invited == false ))
- {
- /* Client ist gebanned (und nicht invited): */
- IRC_WriteStrClient( Client, ERR_BANNEDFROMCHAN_MSG, Client_ID( Client ), channame );
- /* Try next name, if any */
- channame = strtok( NULL, "," );
- continue;
- }
- /* Ist der Channel "invite-only"? */
- if(( strchr( Channel_Modes( chan ), 'i' )) && ( is_invited == false ))
- {
- /* Channel ist "invite-only" und Client wurde nicht invited: */
- IRC_WriteStrClient( Client, ERR_INVITEONLYCHAN_MSG, Client_ID( Client ), channame );
- /* Try next name, if any */
- channame = strtok( NULL, "," );
- continue;
- }
- /* Is the channel protected by a key? */
- if(( strchr( Channel_Modes( chan ), 'k' )) && ( strcmp( Channel_Key( chan ), key ? key : "" ) != 0 ))
- {
- /* Bad channel key! */
- IRC_WriteStrClient( Client, ERR_BADCHANNELKEY_MSG, Client_ID( Client ), channame );
- /* Try next name, if any */
- channame = strtok( NULL, "," );
- continue;
- }
- /* Are there already too many members? */
- if(( strchr( Channel_Modes( chan ), 'l' )) && ( Channel_MaxUsers( chan ) <= Channel_MemberCount( chan )))
- {
- /* Bad channel key! */
- IRC_WriteStrClient( Client, ERR_CHANNELISFULL_MSG, Client_ID( Client ), channame );
- /* Try next name, if any */
- channame = strtok( NULL, "," );
- continue;
- }
- }
- }
- else
- {
- /* Remote server: we don't need to know whether the
- * client is invited or not, but we have to make sure
- * that the "one shot" entries (generated by INVITE
- * commands) in this list become deleted when a user
- * joins a channel this way. */
- chan = Channel_Search( channame );
- if( chan != NULL ) (void)Lists_CheckInvited( target, chan );
- }
- /* Channel joinen (und ggf. anlegen) */
- if( ! Channel_Join( target, channame ))
- {
- /* naechsten Namen ermitteln */
- channame = strtok( NULL, "," );
- continue;
- }
- if( ! chan ) chan = Channel_Search( channame );
- assert( chan != NULL );
- /* Modes setzen (wenn vorhanden) */
- while( flags && *flags )
- {
- Channel_UserModeAdd( chan, target, *flags );
- flags++;
- }
- /* Wenn persistenter Channel und IRC-Operator: zum Channel-OP machen */
- if(( strchr( Channel_Modes( chan ), 'P' )) && ( strchr( Client_Modes( target ), 'o' ))) Channel_UserModeAdd( chan, target, 'o' );
- /* Muessen Modes an andere Server gemeldet werden? */
- strlcpy( &modes[1], Channel_UserModes( chan, target ), sizeof( modes ) - 1 );
- if( modes[1] ) modes[0] = 0x7;
- else modes[0] = '\0';
- /* An andere Server weiterleiten */
- IRC_WriteStrServersPrefix( Client, target, "JOIN :%s%s", channame, modes );
- /* im Channel bekannt machen */
- IRC_WriteStrChannelPrefix( Client, chan, target, false, "JOIN :%s", channame );
- if( modes[1] )
- {
- /* Modes im Channel bekannt machen */
- IRC_WriteStrChannelPrefix( Client, chan, target, false, "MODE %s +%s %s", channame, &modes[1], Client_ID( target ));
- }
- if( Client_Type( Client ) == CLIENT_USER )
- {
- /* an Client bestaetigen */
- IRC_WriteStrClientPrefix( Client, target, "JOIN :%s", channame );
- /* Send topic to client, if any */
- topic = Channel_Topic(chan);
- if (*topic) {
- IRC_WriteStrClient(Client, RPL_TOPIC_MSG,
- Client_ID(Client), channame, topic);
- #ifndef STRICT_RFC
- IRC_WriteStrClient(Client, RPL_TOPICSETBY_MSG,
- Client_ID(Client), channame,
- Channel_TopicWho(chan),
- Channel_TopicTime(chan));
- #endif
- }
- /* Mitglieder an Client Melden */
- IRC_Send_NAMES( Client, chan );
- IRC_WriteStrClient( Client, RPL_ENDOFNAMES_MSG, Client_ID( Client ), Channel_Name( chan ));
- }
- /* next channel? */
- channame = channame_ptr;
- if (channame) {
- channame++;
- channame_ptr = strchr(channame, ',');
- if (channame_ptr) *channame_ptr = '\0';
- if (key_ptr) {
- key = ++key_ptr;
- key_ptr = strchr(key, ',');
- if (key_ptr) *key_ptr = '\0';
- }
- }
- }
- return CONNECTED;
- } /* IRC_JOIN */
- GLOBAL bool
- IRC_PART( CLIENT *Client, REQUEST *Req )
- {
- CLIENT *target;
- char *chan;
- assert( Client != NULL );
- assert( Req != NULL );
- /* Falsche Anzahl Parameter? */
- if(( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
- /* Wer ist der Absender? */
- if( Client_Type( Client ) == CLIENT_SERVER ) target = Client_Search( Req->prefix );
- else target = Client;
- if( ! target ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
- /* Channel-Namen durchgehen */
- chan = strtok( Req->argv[0], "," );
- while( chan )
- {
- if( ! Channel_Part( target, Client, chan, Req->argc > 1 ? Req->argv[1] : Client_ID( target )))
- {
- /* naechsten Namen ermitteln */
- chan = strtok( NULL, "," );
- continue;
- }
- /* naechsten Namen ermitteln */
- chan = strtok( NULL, "," );
- }
- return CONNECTED;
- } /* IRC_PART */
- GLOBAL bool
- IRC_TOPIC( CLIENT *Client, REQUEST *Req )
- {
- CHANNEL *chan;
- CLIENT *from;
- char *topic;
- bool r;
- assert( Client != NULL );
- assert( Req != NULL );
- /* Falsche Anzahl Parameter? */
- if(( Req->argc < 1 ) || ( 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 );
- /* Welcher Channel? */
- chan = Channel_Search( Req->argv[0] );
- if( ! chan ) return IRC_WriteStrClient( from, ERR_NOSUCHCHANNEL_MSG, Client_ID( from ), Req->argv[0] );
- /* Ist der User Mitglied in dem Channel? */
- if( ! Channel_IsMemberOf( chan, from )) return IRC_WriteStrClient( from, ERR_NOTONCHANNEL_MSG, Client_ID( from ), Req->argv[0] );
- if( Req->argc == 1 )
- {
- /* Request actual topic */
- topic = Channel_Topic(chan);
- if (*topic) {
- r = IRC_WriteStrClient(from, RPL_TOPIC_MSG,
- Client_ID(Client), Channel_Name(chan), topic);
- #ifndef STRICT_RFC
- r = IRC_WriteStrClient(from, RPL_TOPICSETBY_MSG,
- Client_ID(Client), Channel_Name(chan),
- Channel_TopicWho(chan),
- Channel_TopicTime(chan));
- #endif
- return r;
- }
- else
- return IRC_WriteStrClient(from, RPL_NOTOPIC_MSG,
- Client_ID(from), Channel_Name(chan));
- }
- if( strchr( Channel_Modes( chan ), 't' ))
- {
- /* Topic Lock. Ist der User ein Channel Operator? */
- if( ! strchr( Channel_UserModes( chan, from ), 'o' )) return IRC_WriteStrClient( from, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( from ), Channel_Name( chan ));
- }
- /* Set new topic */
- Channel_SetTopic(chan, from, Req->argv[1]);
- Log(LOG_DEBUG, "User \"%s\" set topic on \"%s\": %s",
- Client_Mask(from), Channel_Name(chan),
- Req->argv[1][0] ? Req->argv[1] : "<none>");
- /* im Channel bekannt machen und an Server weiterleiten */
- IRC_WriteStrServersPrefix( Client, from, "TOPIC %s :%s", Req->argv[0], Req->argv[1] );
- IRC_WriteStrChannelPrefix( Client, chan, from, false, "TOPIC %s :%s", Req->argv[0], Req->argv[1] );
- if( Client_Type( Client ) == CLIENT_USER ) return IRC_WriteStrClientPrefix( Client, Client, "TOPIC %s :%s", Req->argv[0], Req->argv[1] );
- else return CONNECTED;
- } /* IRC_TOPIC */
- /**
- * Handler for the IRC "LIST" command.
- * This implementation handles the local case as well as the forwarding of the
- * LIST command to other servers in the IRC network.
- */
- GLOBAL bool
- IRC_LIST( CLIENT *Client, REQUEST *Req )
- {
- char *pattern;
- CHANNEL *chan;
- CLIENT *from, *target;
- assert( Client != NULL );
- assert( Req != NULL );
- /* Bad number of prameters? */
- if( Req->argc > 2 )
- return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG,
- Client_ID( Client ), Req->command );
- if( Req->argc > 0 )
- pattern = strtok( Req->argv[0], "," );
- else
- pattern = "*";
- /* Get sender from prefix, if any */
- if( Client_Type( Client ) == CLIENT_SERVER )
- from = Client_Search( Req->prefix );
- else
- from = Client;
- if( ! from )
- return IRC_WriteStrClient( Client, ERR_NOSUCHSERVER_MSG,
- Client_ID( Client ), Req->prefix );
- if( Req->argc == 2 )
- {
- /* Forward to other server? */
- target = Client_Search( Req->argv[1] );
- if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER ))
- return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG,
- Client_ID( Client ), Req->argv[1] );
- if( target != Client_ThisServer( ))
- {
- /* Target is indeed an other server, forward it! */
- return IRC_WriteStrClientPrefix( target, from,
- "LIST %s :%s", Client_ID( from ),
- Req->argv[1] );
- }
- }
-
- while( pattern )
- {
- /* Loop through all the channels */
- chan = Channel_First( );
- while( chan )
- {
- /* Check search pattern */
- if( Match( pattern, Channel_Name( chan )))
- {
- /* Gotcha! */
- if( ! strchr( Channel_Modes( chan ), 's' ) ||
- Channel_IsMemberOf( chan, from ))
- {
- if( ! IRC_WriteStrClient( from,
- RPL_LIST_MSG, Client_ID( from ),
- Channel_Name( chan ),
- Channel_MemberCount( chan ),
- Channel_Topic( chan )))
- return DISCONNECTED;
- }
- }
- chan = Channel_Next( chan );
- }
-
- /* Get next name ... */
- if( Req->argc > 0 )
- pattern = strtok( NULL, "," );
- else
- pattern = NULL;
- }
-
- return IRC_WriteStrClient( from, RPL_LISTEND_MSG, Client_ID( from ));
- } /* IRC_LIST */
- GLOBAL bool
- IRC_CHANINFO( CLIENT *Client, REQUEST *Req )
- {
- char modes_add[COMMAND_LEN], l[16], *ptr;
- CLIENT *from;
- CHANNEL *chan;
- int arg_topic;
- assert( Client != NULL );
- assert( Req != NULL );
- /* Bad number of parameters? */
- if(( Req->argc < 2 ) || ( Req->argc == 4 ) || ( Req->argc > 5 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
- /* Compatibility kludge */
- if( Req->argc == 5 ) arg_topic = 4;
- else if( Req->argc == 3 ) arg_topic = 2;
- else arg_topic = -1;
- /* Search origin */
- from = Client_Search( Req->prefix );
- if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
- /* Search or create channel */
- chan = Channel_Search( Req->argv[0] );
- if( ! chan ) chan = Channel_Create( Req->argv[0] );
- if( ! chan ) return CONNECTED;
- if( Req->argv[1][0] == '+' )
- {
- ptr = Channel_Modes( chan );
- if( ! *ptr )
- {
- /* OK, this channel doesn't have modes jet, set the received ones: */
- Channel_SetModes( chan, &Req->argv[1][1] );
- if( Req->argc == 5 )
- {
- if( strchr( Channel_Modes( chan ), 'k' )) Channel_SetKey( chan, Req->argv[2] );
- if( strchr( Channel_Modes( chan ), 'l' )) Channel_SetMaxUsers( chan, atol( Req->argv[3] ));
- }
- else
- {
- /* Delete modes which we never want to inherit */
- Channel_ModeDel( chan, 'l' );
- Channel_ModeDel( chan, 'k' );
- }
- strcpy( modes_add, "" );
- ptr = Channel_Modes( chan );
- while( *ptr )
- {
- if( *ptr == 'l' )
- {
- snprintf( l, sizeof( l ), " %ld", Channel_MaxUsers( chan ));
- strlcat( modes_add, l, sizeof( modes_add ));
- }
- if( *ptr == 'k' )
- {
- strlcat( modes_add, " ", sizeof( modes_add ));
- strlcat( modes_add, Channel_Key( chan ), sizeof( modes_add ));
- }
- ptr++;
- }
-
- /* Inform members of this channel */
- IRC_WriteStrChannelPrefix( Client, chan, from, false, "MODE %s +%s%s", Req->argv[0], Channel_Modes( chan ), modes_add );
- }
- }
- else Log( LOG_WARNING, "CHANINFO: invalid MODE format ignored!" );
- if( arg_topic > 0 )
- {
- /* We got a topic */
- ptr = Channel_Topic( chan );
- if(( ! *ptr ) && ( Req->argv[arg_topic][0] ))
- {
- /* OK, there is no topic jet */
- Channel_SetTopic(chan, Client, Req->argv[arg_topic]);
- IRC_WriteStrChannelPrefix(Client, chan, from, false,
- "TOPIC %s :%s", Req->argv[0], Channel_Topic(chan));
- }
- }
- /* Forward CHANINFO to other serevrs */
- if( Req->argc == 5 ) IRC_WriteStrServersPrefixFlag( Client, from, 'C', "CHANINFO %s %s %s %s :%s", Req->argv[0], Req->argv[1], Req->argv[2], Req->argv[3], Req->argv[4] );
- else if( Req->argc == 3 ) IRC_WriteStrServersPrefixFlag( Client, from, 'C', "CHANINFO %s %s :%s", Req->argv[0], Req->argv[1], Req->argv[2] );
- else IRC_WriteStrServersPrefixFlag( Client, from, 'C', "CHANINFO %s %s", Req->argv[0], Req->argv[1] );
- return CONNECTED;
- } /* IRC_CHANINFO */
- /* -eof- */
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