1349 lines
29 KiB
C
1349 lines
29 KiB
C
/*
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* ngIRCd -- The Next Generation IRC Daemon
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* Copyright (c)2001-2013 Alexander Barton (alex@barton.de) and Contributors.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* Please read the file COPYING, README and AUTHORS for more information.
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*/
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#define __channel_c__
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#include "portab.h"
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/**
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* @file
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* Channel management
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*/
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#include "imp.h"
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#include <assert.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <stdio.h>
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#include <strings.h>
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#include "defines.h"
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#include "conn-func.h"
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#include "exp.h"
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#include "channel.h"
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#include "imp.h"
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#include "irc-write.h"
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#include "conf.h"
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#include "hash.h"
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#include "lists.h"
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#include "log.h"
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#include "messages.h"
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#include "match.h"
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#include "exp.h"
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#define REMOVE_PART 0
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#define REMOVE_QUIT 1
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#define REMOVE_KICK 2
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static CHANNEL *My_Channels;
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static CL2CHAN *My_Cl2Chan;
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static CL2CHAN *Get_Cl2Chan PARAMS(( CHANNEL *Chan, CLIENT *Client ));
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static CL2CHAN *Add_Client PARAMS(( CHANNEL *Chan, CLIENT *Client ));
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static bool Remove_Client PARAMS(( int Type, CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, const char *Reason, bool InformServer ));
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static CL2CHAN *Get_First_Cl2Chan PARAMS(( CLIENT *Client, CHANNEL *Chan ));
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static CL2CHAN *Get_Next_Cl2Chan PARAMS(( CL2CHAN *Start, CLIENT *Client, CHANNEL *Chan ));
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static void Delete_Channel PARAMS(( CHANNEL *Chan ));
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static void Free_Channel PARAMS(( CHANNEL *Chan ));
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static void Set_KeyFile PARAMS((CHANNEL *Chan, const char *KeyFile));
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GLOBAL void
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Channel_Init( void )
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{
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My_Channels = NULL;
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My_Cl2Chan = NULL;
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} /* Channel_Init */
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GLOBAL struct list_head *
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Channel_GetListBans(CHANNEL *c)
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{
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assert(c != NULL);
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return &c->list_bans;
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}
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GLOBAL struct list_head *
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Channel_GetListExcepts(CHANNEL *c)
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{
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assert(c != NULL);
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return &c->list_excepts;
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}
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GLOBAL struct list_head *
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Channel_GetListInvites(CHANNEL *c)
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{
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assert(c != NULL);
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return &c->list_invites;
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}
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/**
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* Generate predefined persistent channels and &SERVER
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*/
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GLOBAL void
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Channel_InitPredefined( void )
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{
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CHANNEL *new_chan;
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const struct Conf_Channel *conf_chan;
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const char *c;
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size_t i, channel_count = array_length(&Conf_Channels, sizeof(*conf_chan));
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conf_chan = array_start(&Conf_Channels);
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assert(channel_count == 0 || conf_chan != NULL);
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for (i = 0; i < channel_count; i++, conf_chan++) {
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if (!conf_chan->name[0])
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continue;
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if (!Channel_IsValidName(conf_chan->name)) {
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Log(LOG_ERR,
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"Can't create pre-defined channel: invalid name: \"%s\"",
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conf_chan->name);
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continue;
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}
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new_chan = Channel_Search(conf_chan->name);
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if (new_chan) {
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Log(LOG_INFO,
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"Can't create pre-defined channel \"%s\": name already in use.",
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conf_chan->name);
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Set_KeyFile(new_chan, conf_chan->keyfile);
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continue;
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}
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new_chan = Channel_Create(conf_chan->name);
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if (!new_chan) {
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Log(LOG_ERR, "Can't create pre-defined channel \"%s\"!",
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conf_chan->name);
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continue;
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}
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Log(LOG_INFO, "Created pre-defined channel \"%s\".",
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conf_chan->name);
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Channel_ModeAdd(new_chan, 'P');
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if (conf_chan->topic[0])
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Channel_SetTopic(new_chan, NULL, conf_chan->topic);
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c = conf_chan->modes;
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while (*c)
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Channel_ModeAdd(new_chan, *c++);
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Channel_SetKey(new_chan, conf_chan->key);
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Channel_SetMaxUsers(new_chan, conf_chan->maxusers);
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Set_KeyFile(new_chan, conf_chan->keyfile);
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}
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if (channel_count)
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array_free(&Conf_Channels);
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/* Make sure the local &SERVER channel exists */
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if (!Channel_Search("&SERVER")) {
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new_chan = Channel_Create("&SERVER");
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if (new_chan) {
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Channel_SetModes(new_chan, "mnPt");
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Channel_SetTopic(new_chan, Client_ThisServer(),
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"Server Messages");
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} else
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Log(LOG_ERR, "Failed to create \"&SERVER\" channel!");
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} else
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LogDebug("Required channel \"&SERVER\" already exists, ok.");
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} /* Channel_InitPredefined */
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static void
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Free_Channel(CHANNEL *chan)
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{
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array_free(&chan->topic);
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array_free(&chan->keyfile);
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Lists_Free(&chan->list_bans);
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Lists_Free(&chan->list_excepts);
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Lists_Free(&chan->list_invites);
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free(chan);
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}
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GLOBAL void
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Channel_Exit( void )
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{
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CHANNEL *c, *c_next;
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CL2CHAN *cl2chan, *cl2chan_next;
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/* free struct Channel */
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c = My_Channels;
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while (c) {
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c_next = c->next;
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Free_Channel(c);
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c = c_next;
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}
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/* Free Channel allocation table */
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cl2chan = My_Cl2Chan;
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while (cl2chan) {
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cl2chan_next = cl2chan->next;
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free(cl2chan);
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cl2chan = cl2chan_next;
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}
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} /* Channel_Exit */
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/**
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* Join Channel
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* This function lets a client join a channel. First, the function
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* checks that the specified channel name is valid and that the client
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* isn't already a member. If the specified channel doesn't exist,
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* a new channel is created. Client is added to channel by function
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* Add_Client().
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*/
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GLOBAL bool
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Channel_Join( CLIENT *Client, const char *Name )
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{
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CHANNEL *chan;
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assert(Client != NULL);
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assert(Name != NULL);
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/* Check that the channel name is valid */
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if (! Channel_IsValidName(Name)) {
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IRC_WriteErrClient(Client, ERR_NOSUCHCHANNEL_MSG,
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Client_ID(Client), Name);
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return false;
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}
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chan = Channel_Search(Name);
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if(chan) {
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/* Check if the client is already in the channel */
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if (Get_Cl2Chan(chan, Client))
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return false;
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} else {
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/* If the specified channel does not exist, the channel
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* is now created */
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chan = Channel_Create(Name);
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if (!chan)
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return false;
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}
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/* Add user to Channel */
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if (! Add_Client(chan, Client))
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return false;
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return true;
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} /* Channel_Join */
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/**
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* Part client from channel.
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* This function lets a client part from a channel. First, the function checks
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* if the channel exists and the client is a member of it and sends out
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* appropriate error messages if not. The real work is done by the function
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* Remove_Client().
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*/
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GLOBAL bool
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Channel_Part(CLIENT * Client, CLIENT * Origin, const char *Name, const char *Reason)
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{
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CHANNEL *chan;
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assert(Client != NULL);
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assert(Name != NULL);
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assert(Reason != NULL);
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/* Check that specified channel exists */
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chan = Channel_Search(Name);
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if (!chan) {
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IRC_WriteErrClient(Client, ERR_NOSUCHCHANNEL_MSG,
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Client_ID(Client), Name);
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return false;
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}
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/* Check that the client is in the channel */
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if (!Get_Cl2Chan(chan, Client)) {
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IRC_WriteErrClient(Client, ERR_NOTONCHANNEL_MSG,
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Client_ID(Client), Name);
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return false;
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}
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if (Conf_MorePrivacy)
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Reason = "";
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/* Part client from channel */
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if (!Remove_Client(REMOVE_PART, chan, Client, Origin, Reason, true))
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return false;
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else
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return true;
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} /* Channel_Part */
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/**
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* Kick user from Channel
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*/
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GLOBAL void
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Channel_Kick(CLIENT *Peer, CLIENT *Target, CLIENT *Origin, const char *Name,
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const char *Reason )
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{
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CHANNEL *chan;
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bool can_kick = false;
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assert(Peer != NULL);
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assert(Target != NULL);
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assert(Origin != NULL);
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assert(Name != NULL);
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assert(Reason != NULL);
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/* Check that channel exists */
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chan = Channel_Search( Name );
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if (!chan) {
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IRC_WriteErrClient(Origin, ERR_NOSUCHCHANNEL_MSG,
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Client_ID(Origin), Name);
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return;
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}
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if (Client_Type(Peer) != CLIENT_SERVER &&
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Client_Type(Origin) != CLIENT_SERVICE) {
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/* Check that user is on the specified channel */
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if (!Channel_IsMemberOf(chan, Origin)) {
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IRC_WriteErrClient(Origin, ERR_NOTONCHANNEL_MSG,
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Client_ID(Origin), Name);
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return;
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}
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}
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/* Check that the client to be kicked is on the specified channel */
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if (!Channel_IsMemberOf(chan, Target)) {
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IRC_WriteErrClient(Origin, ERR_USERNOTINCHANNEL_MSG,
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Client_ID(Origin), Client_ID(Target), Name );
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return;
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}
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if(Client_Type(Peer) == CLIENT_USER) {
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/* Channel mode 'Q' and user mode 'q' on target: nobody but
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* IRC Operators and servers can kick the target user */
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if ((Channel_HasMode(chan, 'Q')
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|| Client_HasMode(Target, 'q')
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|| Client_Type(Target) == CLIENT_SERVICE)
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&& !Client_HasMode(Origin, 'o')) {
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IRC_WriteErrClient(Origin, ERR_KICKDENY_MSG,
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Client_ID(Origin), Name,
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Client_ID(Target));
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return;
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}
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/* Check if client has the rights to kick target */
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/* Owner can kick everyone */
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if (Channel_UserHasMode(chan, Peer, 'q'))
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can_kick = true;
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/* Admin can't kick owner */
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else if (Channel_UserHasMode(chan, Peer, 'a') &&
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!Channel_UserHasMode(chan, Target, 'q'))
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can_kick = true;
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/* Op can't kick owner | admin */
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else if (Channel_UserHasMode(chan, Peer, 'o') &&
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!Channel_UserHasMode(chan, Target, 'q') &&
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!Channel_UserHasMode(chan, Target, 'a'))
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can_kick = true;
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/* Half Op can't kick owner | admin | op */
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else if (Channel_UserHasMode(chan, Peer, 'h') &&
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!Channel_UserHasMode(chan, Target, 'q') &&
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!Channel_UserHasMode(chan, Target, 'a') &&
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!Channel_UserHasMode(chan, Target, 'o'))
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can_kick = true;
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if(!can_kick) {
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IRC_WriteErrClient(Origin, ERR_CHANOPPRIVTOOLOW_MSG,
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Client_ID(Origin), Name);
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return;
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}
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}
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/* Kick Client from channel */
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Remove_Client( REMOVE_KICK, chan, Target, Origin, Reason, true);
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} /* Channel_Kick */
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GLOBAL void
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Channel_Quit( CLIENT *Client, const char *Reason )
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{
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CHANNEL *c, *next_c;
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assert( Client != NULL );
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assert( Reason != NULL );
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if (Conf_MorePrivacy)
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Reason = "";
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IRC_WriteStrRelatedPrefix( Client, Client, false, "QUIT :%s", Reason );
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c = My_Channels;
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while( c )
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{
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next_c = c->next;
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Remove_Client( REMOVE_QUIT, c, Client, Client, Reason, false );
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c = next_c;
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}
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} /* Channel_Quit */
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/**
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* Get number of channels this server knows and that are "visible" to
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* the given client. If no client is given, all channels will be counted.
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*
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* @param Client The client to check or NULL.
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* @return Number of channels visible to the client.
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*/
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GLOBAL unsigned long
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Channel_CountVisible (CLIENT *Client)
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{
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CHANNEL *c;
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unsigned long count = 0;
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c = My_Channels;
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while(c) {
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if (Client) {
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if (!Channel_HasMode(c, 's')
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|| Channel_IsMemberOf(c, Client))
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count++;
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} else
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count++;
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c = c->next;
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}
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return count;
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}
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GLOBAL unsigned long
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Channel_MemberCount( CHANNEL *Chan )
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{
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CL2CHAN *cl2chan;
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unsigned long count = 0;
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assert( Chan != NULL );
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cl2chan = My_Cl2Chan;
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while( cl2chan )
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{
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if( cl2chan->channel == Chan ) count++;
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cl2chan = cl2chan->next;
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}
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return count;
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} /* Channel_MemberCount */
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GLOBAL int
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Channel_CountForUser( CLIENT *Client )
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{
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/* Count number of channels a user is member of. */
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CL2CHAN *cl2chan;
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int count = 0;
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assert( Client != NULL );
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cl2chan = My_Cl2Chan;
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while( cl2chan )
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{
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if( cl2chan->client == Client ) count++;
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cl2chan = cl2chan->next;
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}
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return count;
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} /* Channel_CountForUser */
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GLOBAL const char *
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Channel_Name( const CHANNEL *Chan )
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{
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assert( Chan != NULL );
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return Chan->name;
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} /* Channel_Name */
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GLOBAL char *
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Channel_Modes( CHANNEL *Chan )
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{
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assert( Chan != NULL );
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return Chan->modes;
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} /* Channel_Modes */
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GLOBAL bool
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Channel_HasMode( CHANNEL *Chan, char Mode )
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{
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assert( Chan != NULL );
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return strchr( Chan->modes, Mode ) != NULL;
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} /* Channel_HasMode */
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GLOBAL char *
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Channel_Key( CHANNEL *Chan )
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{
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assert( Chan != NULL );
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return Chan->key;
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} /* Channel_Key */
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GLOBAL unsigned long
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Channel_MaxUsers( CHANNEL *Chan )
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{
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assert( Chan != NULL );
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return Chan->maxusers;
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} /* Channel_MaxUsers */
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GLOBAL CHANNEL *
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Channel_First( void )
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{
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return My_Channels;
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} /* Channel_First */
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GLOBAL CHANNEL *
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Channel_Next( CHANNEL *Chan )
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{
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assert( Chan != NULL );
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return Chan->next;
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} /* Channel_Next */
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GLOBAL CHANNEL *
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Channel_Search( const char *Name )
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{
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/* Search channel structure */
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CHANNEL *c;
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UINT32 search_hash;
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assert( Name != NULL );
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search_hash = Hash( Name );
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c = My_Channels;
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while( c )
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{
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if( search_hash == c->hash )
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{
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/* hash hit */
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if( strcasecmp( Name, c->name ) == 0 ) return c;
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}
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c = c->next;
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}
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return NULL;
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} /* Channel_Search */
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GLOBAL CL2CHAN *
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Channel_FirstMember( CHANNEL *Chan )
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{
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assert( Chan != NULL );
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return Get_First_Cl2Chan( NULL, Chan );
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} /* Channel_FirstMember */
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GLOBAL CL2CHAN *
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Channel_NextMember( CHANNEL *Chan, CL2CHAN *Cl2Chan )
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{
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assert( Chan != NULL );
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assert( Cl2Chan != NULL );
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return Get_Next_Cl2Chan( Cl2Chan->next, NULL, Chan );
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} /* Channel_NextMember */
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GLOBAL CL2CHAN *
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Channel_FirstChannelOf( CLIENT *Client )
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{
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assert( Client != NULL );
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return Get_First_Cl2Chan( Client, NULL );
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} /* Channel_FirstChannelOf */
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GLOBAL CL2CHAN *
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Channel_NextChannelOf( CLIENT *Client, CL2CHAN *Cl2Chan )
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{
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assert( Client != NULL );
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assert( Cl2Chan != NULL );
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return Get_Next_Cl2Chan( Cl2Chan->next, Client, NULL );
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} /* Channel_NextChannelOf */
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GLOBAL CLIENT *
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Channel_GetClient( CL2CHAN *Cl2Chan )
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{
|
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assert( Cl2Chan != NULL );
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return Cl2Chan->client;
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} /* Channel_GetClient */
|
|
|
|
|
|
GLOBAL CHANNEL *
|
|
Channel_GetChannel( CL2CHAN *Cl2Chan )
|
|
{
|
|
assert( Cl2Chan != NULL );
|
|
return Cl2Chan->channel;
|
|
} /* Channel_GetChannel */
|
|
|
|
|
|
GLOBAL bool
|
|
Channel_IsValidName( const char *Name )
|
|
{
|
|
assert( Name != NULL );
|
|
|
|
#ifdef STRICT_RFC
|
|
if (strlen(Name) <= 1)
|
|
return false;
|
|
#endif
|
|
if (strchr("#&+", Name[0]) == NULL)
|
|
return false;
|
|
if (strlen(Name) >= CHANNEL_NAME_LEN)
|
|
return false;
|
|
|
|
return Name[strcspn(Name, " ,:\007")] == 0;
|
|
} /* Channel_IsValidName */
|
|
|
|
|
|
GLOBAL bool
|
|
Channel_ModeAdd( CHANNEL *Chan, char Mode )
|
|
{
|
|
/* set Mode.
|
|
* If the channel already had this mode, return false.
|
|
* If the channel mode was newly set return true.
|
|
*/
|
|
|
|
char x[2];
|
|
|
|
assert( Chan != NULL );
|
|
|
|
x[0] = Mode; x[1] = '\0';
|
|
if( ! Channel_HasMode( Chan, x[0] ))
|
|
{
|
|
/* Channel does not have this mode yet, set it */
|
|
strlcat( Chan->modes, x, sizeof( Chan->modes ));
|
|
return true;
|
|
}
|
|
else return false;
|
|
} /* Channel_ModeAdd */
|
|
|
|
|
|
GLOBAL bool
|
|
Channel_ModeDel( CHANNEL *Chan, char Mode )
|
|
{
|
|
/* Delete mode.
|
|
* if the mode was removed return true.
|
|
* if the channel did not have the mode, return false.
|
|
*/
|
|
char *p;
|
|
|
|
assert( Chan != NULL );
|
|
|
|
p = strchr( Chan->modes, Mode );
|
|
if( ! p ) return false;
|
|
|
|
/* Channel has mode -> delete */
|
|
while( *p )
|
|
{
|
|
*p = *(p + 1);
|
|
p++;
|
|
}
|
|
return true;
|
|
} /* Channel_ModeDel */
|
|
|
|
|
|
GLOBAL bool
|
|
Channel_UserModeAdd( CHANNEL *Chan, CLIENT *Client, char Mode )
|
|
{
|
|
/* Set Channel-User-Mode.
|
|
* if mode was newly set, return true.
|
|
* if the User already had this channel-mode, return false.
|
|
*/
|
|
|
|
CL2CHAN *cl2chan;
|
|
char x[2];
|
|
|
|
assert( Chan != NULL );
|
|
assert( Client != NULL );
|
|
|
|
cl2chan = Get_Cl2Chan( Chan, Client );
|
|
assert( cl2chan != NULL );
|
|
|
|
x[0] = Mode; x[1] = '\0';
|
|
if( ! strchr( cl2chan->modes, x[0] ))
|
|
{
|
|
/* mode not set, -> set it */
|
|
strlcat( cl2chan->modes, x, sizeof( cl2chan->modes ));
|
|
return true;
|
|
}
|
|
else return false;
|
|
} /* Channel_UserModeAdd */
|
|
|
|
|
|
GLOBAL bool
|
|
Channel_UserModeDel( CHANNEL *Chan, CLIENT *Client, char Mode )
|
|
{
|
|
/* Delete Channel-User-Mode.
|
|
* If Mode was removed, return true.
|
|
* If User did not have the Channel-Mode, return false.
|
|
*/
|
|
|
|
CL2CHAN *cl2chan;
|
|
char *p;
|
|
|
|
assert( Chan != NULL );
|
|
assert( Client != NULL );
|
|
|
|
cl2chan = Get_Cl2Chan( Chan, Client );
|
|
assert( cl2chan != NULL );
|
|
|
|
p = strchr( cl2chan->modes, Mode );
|
|
if( ! p ) return false;
|
|
|
|
/* Client has Mode -> delete */
|
|
while( *p )
|
|
{
|
|
*p = *(p + 1);
|
|
p++;
|
|
}
|
|
return true;
|
|
} /* Channel_UserModeDel */
|
|
|
|
|
|
GLOBAL char *
|
|
Channel_UserModes( CHANNEL *Chan, CLIENT *Client )
|
|
{
|
|
/* return Users' Channel-Modes */
|
|
|
|
CL2CHAN *cl2chan;
|
|
|
|
assert( Chan != NULL );
|
|
assert( Client != NULL );
|
|
|
|
cl2chan = Get_Cl2Chan( Chan, Client );
|
|
assert( cl2chan != NULL );
|
|
|
|
return cl2chan->modes;
|
|
} /* Channel_UserModes */
|
|
|
|
|
|
GLOBAL bool
|
|
Channel_UserHasMode( CHANNEL *Chan, CLIENT *Client, char Mode )
|
|
{
|
|
return strchr(Channel_UserModes(Chan, Client), Mode) != NULL;
|
|
} /* Channel_UserHasMode */
|
|
|
|
|
|
GLOBAL bool
|
|
Channel_IsMemberOf( CHANNEL *Chan, CLIENT *Client )
|
|
{
|
|
/* Test if Client is on Channel Chan */
|
|
|
|
assert( Chan != NULL );
|
|
assert( Client != NULL );
|
|
return Get_Cl2Chan(Chan, Client) != NULL;
|
|
} /* Channel_IsMemberOf */
|
|
|
|
|
|
GLOBAL char *
|
|
Channel_Topic( CHANNEL *Chan )
|
|
{
|
|
char *ret;
|
|
assert( Chan != NULL );
|
|
ret = array_start(&Chan->topic);
|
|
return ret ? ret : "";
|
|
} /* Channel_Topic */
|
|
|
|
|
|
#ifndef STRICT_RFC
|
|
|
|
GLOBAL unsigned int
|
|
Channel_TopicTime(CHANNEL *Chan)
|
|
{
|
|
assert(Chan != NULL);
|
|
return (unsigned int) Chan->topic_time;
|
|
} /* Channel_TopicTime */
|
|
|
|
|
|
GLOBAL char *
|
|
Channel_TopicWho(CHANNEL *Chan)
|
|
{
|
|
assert(Chan != NULL);
|
|
return Chan->topic_who;
|
|
} /* Channel_TopicWho */
|
|
|
|
|
|
GLOBAL unsigned int
|
|
Channel_CreationTime(CHANNEL *Chan)
|
|
{
|
|
assert(Chan != NULL);
|
|
return (unsigned int) Chan->creation_time;
|
|
} /* Channel_CreationTime */
|
|
|
|
#endif
|
|
|
|
|
|
GLOBAL void
|
|
Channel_SetTopic(CHANNEL *Chan, CLIENT *Client, const char *Topic)
|
|
{
|
|
size_t len;
|
|
assert( Chan != NULL );
|
|
assert( Topic != NULL );
|
|
|
|
len = strlen(Topic);
|
|
if (len < array_bytes(&Chan->topic))
|
|
array_free(&Chan->topic);
|
|
|
|
if (len >= COMMAND_LEN || !array_copyb(&Chan->topic, Topic, len+1))
|
|
Log(LOG_WARNING, "could not set new Topic \"%s\" on %s: %s",
|
|
Topic, Chan->name, strerror(errno));
|
|
#ifndef STRICT_RFC
|
|
Chan->topic_time = time(NULL);
|
|
if (Client != NULL && Client_Type(Client) != CLIENT_SERVER)
|
|
strlcpy(Chan->topic_who, Client_ID(Client),
|
|
sizeof Chan->topic_who);
|
|
else
|
|
strlcpy(Chan->topic_who, DEFAULT_TOPIC_ID,
|
|
sizeof Chan->topic_who);
|
|
#else
|
|
(void) Client;
|
|
#endif
|
|
} /* Channel_SetTopic */
|
|
|
|
|
|
GLOBAL void
|
|
Channel_SetModes( CHANNEL *Chan, const char *Modes )
|
|
{
|
|
assert( Chan != NULL );
|
|
assert( Modes != NULL );
|
|
|
|
strlcpy( Chan->modes, Modes, sizeof( Chan->modes ));
|
|
} /* Channel_SetModes */
|
|
|
|
|
|
GLOBAL void
|
|
Channel_SetKey( CHANNEL *Chan, const char *Key )
|
|
{
|
|
assert( Chan != NULL );
|
|
assert( Key != NULL );
|
|
|
|
strlcpy( Chan->key, Key, sizeof( Chan->key ));
|
|
LogDebug("Channel %s: Key is now \"%s\".", Chan->name, Chan->key );
|
|
} /* Channel_SetKey */
|
|
|
|
|
|
GLOBAL void
|
|
Channel_SetMaxUsers(CHANNEL *Chan, unsigned long Count)
|
|
{
|
|
assert( Chan != NULL );
|
|
|
|
Chan->maxusers = Count;
|
|
LogDebug("Channel %s: Member limit is now %lu.", Chan->name, Chan->maxusers );
|
|
} /* Channel_SetMaxUsers */
|
|
|
|
|
|
/**
|
|
* Check if a client is allowed to send to a specific channel.
|
|
*
|
|
* @param Chan The channel to check.
|
|
* @param From The client that wants to send.
|
|
* @return true if the client is allowed to send, false otherwise.
|
|
*/
|
|
static bool
|
|
Can_Send_To_Channel(CHANNEL *Chan, CLIENT *From)
|
|
{
|
|
bool is_member, has_voice, is_halfop, is_op, is_chanadmin, is_owner;
|
|
|
|
is_member = has_voice = is_halfop = is_op = is_chanadmin = is_owner = false;
|
|
|
|
/* The server itself always can send messages :-) */
|
|
if (Client_ThisServer() == From)
|
|
return true;
|
|
|
|
if (Channel_IsMemberOf(Chan, From)) {
|
|
is_member = true;
|
|
if (Channel_UserHasMode(Chan, From, 'v'))
|
|
has_voice = true;
|
|
if (Channel_UserHasMode(Chan, From, 'h'))
|
|
is_halfop = true;
|
|
if (Channel_UserHasMode(Chan, From, 'o'))
|
|
is_op = true;
|
|
if (Channel_UserHasMode(Chan, From, 'a'))
|
|
is_chanadmin = true;
|
|
if (Channel_UserHasMode(Chan, From, 'q'))
|
|
is_owner = true;
|
|
}
|
|
|
|
/*
|
|
* Is the client allowed to write to channel?
|
|
*
|
|
* If channel mode n set: non-members cannot send to channel.
|
|
* If channel mode m set: need voice.
|
|
*/
|
|
if (Channel_HasMode(Chan, 'n') && !is_member)
|
|
return false;
|
|
|
|
if (Channel_HasMode(Chan, 'M') && !Client_HasMode(From, 'R')
|
|
&& !Client_HasMode(From, 'o'))
|
|
return false;
|
|
|
|
if (has_voice || is_halfop || is_op || is_chanadmin || is_owner)
|
|
return true;
|
|
|
|
if (Channel_HasMode(Chan, 'm'))
|
|
return false;
|
|
|
|
if (Lists_Check(&Chan->list_excepts, From))
|
|
return true;
|
|
|
|
return !Lists_Check(&Chan->list_bans, From);
|
|
}
|
|
|
|
|
|
GLOBAL bool
|
|
Channel_Write(CHANNEL *Chan, CLIENT *From, CLIENT *Client, const char *Command,
|
|
bool SendErrors, const char *Text)
|
|
{
|
|
if (!Can_Send_To_Channel(Chan, From)) {
|
|
if (! SendErrors)
|
|
return CONNECTED; /* no error, see RFC 2812 */
|
|
if (Channel_HasMode(Chan, 'M'))
|
|
return IRC_WriteErrClient(From, ERR_NEEDREGGEDNICK_MSG,
|
|
Client_ID(From), Channel_Name(Chan));
|
|
else
|
|
return IRC_WriteErrClient(From, ERR_CANNOTSENDTOCHAN_MSG,
|
|
Client_ID(From), Channel_Name(Chan));
|
|
}
|
|
|
|
if (Client_Conn(From) > NONE)
|
|
Conn_UpdateIdle(Client_Conn(From));
|
|
|
|
IRC_WriteStrChannelPrefix(Client, Chan, From, true, "%s %s :%s",
|
|
Command, Channel_Name(Chan), Text);
|
|
return CONNECTED;
|
|
}
|
|
|
|
|
|
GLOBAL CHANNEL *
|
|
Channel_Create( const char *Name )
|
|
{
|
|
/* Create new CHANNEL structure and add it to linked list */
|
|
CHANNEL *c;
|
|
|
|
assert( Name != NULL );
|
|
|
|
c = (CHANNEL *)malloc( sizeof( CHANNEL ));
|
|
if( ! c )
|
|
{
|
|
Log( LOG_EMERG, "Can't allocate memory! [New_Chan]" );
|
|
return NULL;
|
|
}
|
|
memset( c, 0, sizeof( CHANNEL ));
|
|
strlcpy( c->name, Name, sizeof( c->name ));
|
|
c->hash = Hash( c->name );
|
|
c->next = My_Channels;
|
|
#ifndef STRICT_RFC
|
|
c->creation_time = time(NULL);
|
|
#endif
|
|
My_Channels = c;
|
|
LogDebug("Created new channel structure for \"%s\".", Name);
|
|
return c;
|
|
} /* Channel_Create */
|
|
|
|
|
|
static CL2CHAN *
|
|
Get_Cl2Chan( CHANNEL *Chan, CLIENT *Client )
|
|
{
|
|
CL2CHAN *cl2chan;
|
|
|
|
assert( Chan != NULL );
|
|
assert( Client != NULL );
|
|
|
|
cl2chan = My_Cl2Chan;
|
|
while( cl2chan )
|
|
{
|
|
if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) return cl2chan;
|
|
cl2chan = cl2chan->next;
|
|
}
|
|
return NULL;
|
|
} /* Get_Cl2Chan */
|
|
|
|
|
|
static CL2CHAN *
|
|
Add_Client( CHANNEL *Chan, CLIENT *Client )
|
|
{
|
|
CL2CHAN *cl2chan;
|
|
|
|
assert( Chan != NULL );
|
|
assert( Client != NULL );
|
|
|
|
/* Create new CL2CHAN structure */
|
|
cl2chan = (CL2CHAN *)malloc( sizeof( CL2CHAN ));
|
|
if( ! cl2chan )
|
|
{
|
|
Log( LOG_EMERG, "Can't allocate memory! [Add_Client]" );
|
|
return NULL;
|
|
}
|
|
cl2chan->channel = Chan;
|
|
cl2chan->client = Client;
|
|
strcpy( cl2chan->modes, "" );
|
|
|
|
/* concatenate */
|
|
cl2chan->next = My_Cl2Chan;
|
|
My_Cl2Chan = cl2chan;
|
|
|
|
LogDebug("User \"%s\" joined channel \"%s\".", Client_Mask(Client), Chan->name);
|
|
|
|
return cl2chan;
|
|
} /* Add_Client */
|
|
|
|
|
|
static bool
|
|
Remove_Client( int Type, CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, const char *Reason, bool InformServer )
|
|
{
|
|
CL2CHAN *cl2chan, *last_cl2chan;
|
|
CHANNEL *c;
|
|
|
|
assert( Chan != NULL );
|
|
assert( Client != NULL );
|
|
assert( Origin != NULL );
|
|
assert( Reason != NULL );
|
|
|
|
/* Do not inform other servers if the channel is local to this server,
|
|
* regardless of what the caller requested! */
|
|
if(InformServer)
|
|
InformServer = !Channel_IsLocal(Chan);
|
|
|
|
last_cl2chan = NULL;
|
|
cl2chan = My_Cl2Chan;
|
|
while( cl2chan )
|
|
{
|
|
if(( cl2chan->channel == Chan ) && ( cl2chan->client == Client )) break;
|
|
last_cl2chan = cl2chan;
|
|
cl2chan = cl2chan->next;
|
|
}
|
|
if( ! cl2chan ) return false;
|
|
|
|
c = cl2chan->channel;
|
|
assert( c != NULL );
|
|
|
|
/* maintain cl2chan list */
|
|
if( last_cl2chan ) last_cl2chan->next = cl2chan->next;
|
|
else My_Cl2Chan = cl2chan->next;
|
|
free( cl2chan );
|
|
|
|
switch( Type )
|
|
{
|
|
case REMOVE_QUIT:
|
|
/* QUIT: other servers have already been notified,
|
|
* see Client_Destroy(); so only inform other clients
|
|
* in same channel. */
|
|
assert( InformServer == false );
|
|
LogDebug("User \"%s\" left channel \"%s\" (%s).",
|
|
Client_Mask( Client ), c->name, Reason );
|
|
break;
|
|
case REMOVE_KICK:
|
|
/* User was KICKed: inform other servers (public
|
|
* channels) and all users in the channel */
|
|
if( InformServer )
|
|
IRC_WriteStrServersPrefix( Client_NextHop( Origin ),
|
|
Origin, "KICK %s %s :%s", c->name, Client_ID( Client ), Reason);
|
|
IRC_WriteStrChannelPrefix(Client, c, Origin, false, "KICK %s %s :%s",
|
|
c->name, Client_ID( Client ), Reason );
|
|
if ((Client_Conn(Client) > NONE) &&
|
|
(Client_Type(Client) == CLIENT_USER))
|
|
{
|
|
IRC_WriteStrClientPrefix(Client, Origin, "KICK %s %s :%s",
|
|
c->name, Client_ID( Client ), Reason);
|
|
}
|
|
LogDebug("User \"%s\" has been kicked off \"%s\" by \"%s\": %s.",
|
|
Client_Mask( Client ), c->name, Client_ID(Origin), Reason);
|
|
break;
|
|
default: /* PART */
|
|
if (Conf_MorePrivacy)
|
|
Reason = "";
|
|
|
|
if (InformServer)
|
|
IRC_WriteStrServersPrefix(Origin, Client, "PART %s :%s", c->name, Reason);
|
|
|
|
IRC_WriteStrChannelPrefix(Origin, c, Client, false, "PART %s :%s",
|
|
c->name, Reason);
|
|
|
|
if ((Client_Conn(Origin) > NONE) &&
|
|
(Client_Type(Origin) == CLIENT_USER))
|
|
{
|
|
IRC_WriteStrClientPrefix( Origin, Client, "PART %s :%s", c->name, Reason);
|
|
LogDebug("User \"%s\" left channel \"%s\" (%s).",
|
|
Client_Mask(Client), c->name, Reason);
|
|
}
|
|
}
|
|
|
|
/* When channel is empty and is not pre-defined, delete */
|
|
if( ! Channel_HasMode( Chan, 'P' ))
|
|
{
|
|
if( ! Get_First_Cl2Chan( NULL, Chan )) Delete_Channel( Chan );
|
|
}
|
|
|
|
return true;
|
|
} /* Remove_Client */
|
|
|
|
|
|
GLOBAL bool
|
|
Channel_AddBan(CHANNEL *c, const char *mask )
|
|
{
|
|
struct list_head *h = Channel_GetListBans(c);
|
|
LogDebug("Adding \"%s\" to \"%s\" ban list", mask, Channel_Name(c));
|
|
return Lists_Add(h, mask, false, NULL);
|
|
}
|
|
|
|
|
|
GLOBAL bool
|
|
Channel_AddExcept(CHANNEL *c, const char *mask )
|
|
{
|
|
struct list_head *h = Channel_GetListExcepts(c);
|
|
LogDebug("Adding \"%s\" to \"%s\" exception list", mask, Channel_Name(c));
|
|
return Lists_Add(h, mask, false, NULL);
|
|
}
|
|
|
|
|
|
GLOBAL bool
|
|
Channel_AddInvite(CHANNEL *c, const char *mask, bool onlyonce)
|
|
{
|
|
struct list_head *h = Channel_GetListInvites(c);
|
|
LogDebug("Adding \"%s\" to \"%s\" invite list", mask, Channel_Name(c));
|
|
return Lists_Add(h, mask, onlyonce, NULL);
|
|
}
|
|
|
|
|
|
static bool
|
|
ShowChannelList(struct list_head *head, CLIENT *Client, CHANNEL *Channel,
|
|
char *msg, char *msg_end)
|
|
{
|
|
struct list_elem *e;
|
|
|
|
assert (Client != NULL);
|
|
assert (Channel != NULL);
|
|
|
|
e = Lists_GetFirst(head);
|
|
while (e) {
|
|
if (!IRC_WriteStrClient(Client, msg, Client_ID(Client),
|
|
Channel_Name(Channel),
|
|
Lists_GetMask(e)))
|
|
return DISCONNECTED;
|
|
e = Lists_GetNext(e);
|
|
}
|
|
|
|
return IRC_WriteStrClient(Client, msg_end, Client_ID(Client),
|
|
Channel_Name(Channel));
|
|
}
|
|
|
|
|
|
GLOBAL bool
|
|
Channel_ShowBans( CLIENT *Client, CHANNEL *Channel )
|
|
{
|
|
struct list_head *h;
|
|
|
|
assert( Channel != NULL );
|
|
|
|
h = Channel_GetListBans(Channel);
|
|
return ShowChannelList(h, Client, Channel, RPL_BANLIST_MSG,
|
|
RPL_ENDOFBANLIST_MSG);
|
|
}
|
|
|
|
|
|
GLOBAL bool
|
|
Channel_ShowExcepts( CLIENT *Client, CHANNEL *Channel )
|
|
{
|
|
struct list_head *h;
|
|
|
|
assert( Channel != NULL );
|
|
|
|
h = Channel_GetListExcepts(Channel);
|
|
return ShowChannelList(h, Client, Channel, RPL_EXCEPTLIST_MSG,
|
|
RPL_ENDOFEXCEPTLIST_MSG);
|
|
}
|
|
|
|
|
|
GLOBAL bool
|
|
Channel_ShowInvites( CLIENT *Client, CHANNEL *Channel )
|
|
{
|
|
struct list_head *h;
|
|
|
|
assert( Channel != NULL );
|
|
|
|
h = Channel_GetListInvites(Channel);
|
|
return ShowChannelList(h, Client, Channel, RPL_INVITELIST_MSG,
|
|
RPL_ENDOFINVITELIST_MSG);
|
|
}
|
|
|
|
|
|
/**
|
|
* Log a message to the local &SERVER channel, if it exists.
|
|
*/
|
|
GLOBAL void
|
|
Channel_LogServer(const char *msg)
|
|
{
|
|
CHANNEL *sc;
|
|
CLIENT *c;
|
|
|
|
assert(msg != NULL);
|
|
|
|
sc = Channel_Search("&SERVER");
|
|
if (!sc)
|
|
return;
|
|
|
|
c = Client_ThisServer();
|
|
Channel_Write(sc, c, c, "PRIVMSG", false, msg);
|
|
} /* Channel_LogServer */
|
|
|
|
|
|
GLOBAL bool
|
|
Channel_CheckKey(CHANNEL *Chan, CLIENT *Client, const char *Key)
|
|
{
|
|
char *file_name, line[COMMAND_LEN], *nick, *pass;
|
|
FILE *fd;
|
|
|
|
assert(Chan != NULL);
|
|
assert(Client != NULL);
|
|
assert(Key != NULL);
|
|
|
|
if (!Channel_HasMode(Chan, 'k'))
|
|
return true;
|
|
if (*Key == '\0')
|
|
return false;
|
|
if (strcmp(Chan->key, Key) == 0)
|
|
return true;
|
|
|
|
file_name = array_start(&Chan->keyfile);
|
|
if (!file_name)
|
|
return false;
|
|
fd = fopen(file_name, "r");
|
|
if (!fd) {
|
|
Log(LOG_ERR, "Can't open channel key file \"%s\" for %s: %s",
|
|
file_name, Chan->name, strerror(errno));
|
|
return false;
|
|
}
|
|
|
|
while (fgets(line, (int)sizeof(line), fd) != NULL) {
|
|
ngt_TrimStr(line);
|
|
if (! (nick = strchr(line, ':')))
|
|
continue;
|
|
*nick++ = '\0';
|
|
if (!Match(line, Client_User(Client)))
|
|
continue;
|
|
if (! (pass = strchr(nick, ':')))
|
|
continue;
|
|
*pass++ = '\0';
|
|
if (!Match(nick, Client_ID(Client)))
|
|
continue;
|
|
if (strcmp(Key, pass) != 0)
|
|
continue;
|
|
|
|
fclose(fd);
|
|
return true;
|
|
}
|
|
fclose(fd);
|
|
return false;
|
|
} /* Channel_CheckKey */
|
|
|
|
|
|
static CL2CHAN *
|
|
Get_First_Cl2Chan( CLIENT *Client, CHANNEL *Chan )
|
|
{
|
|
return Get_Next_Cl2Chan( My_Cl2Chan, Client, Chan );
|
|
} /* Get_First_Cl2Chan */
|
|
|
|
|
|
static CL2CHAN *
|
|
Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Channel )
|
|
{
|
|
CL2CHAN *cl2chan;
|
|
|
|
assert( Client != NULL || Channel != NULL );
|
|
|
|
cl2chan = Start;
|
|
while( cl2chan )
|
|
{
|
|
if(( Client ) && ( cl2chan->client == Client )) return cl2chan;
|
|
if(( Channel ) && ( cl2chan->channel == Channel )) return cl2chan;
|
|
cl2chan = cl2chan->next;
|
|
}
|
|
return NULL;
|
|
} /* Get_Next_Cl2Chan */
|
|
|
|
|
|
/**
|
|
* Remove a channel and free all of its data structures.
|
|
*/
|
|
static void
|
|
Delete_Channel(CHANNEL *Chan)
|
|
{
|
|
CHANNEL *chan, *last_chan;
|
|
|
|
last_chan = NULL;
|
|
chan = My_Channels;
|
|
while (chan) {
|
|
if (chan == Chan)
|
|
break;
|
|
last_chan = chan;
|
|
chan = chan->next;
|
|
}
|
|
|
|
assert(chan != NULL);
|
|
if (!chan)
|
|
return;
|
|
|
|
/* maintain channel list */
|
|
if (last_chan)
|
|
last_chan->next = chan->next;
|
|
else
|
|
My_Channels = chan->next;
|
|
|
|
LogDebug("Freed channel structure for \"%s\".", Chan->name);
|
|
Free_Channel(Chan);
|
|
} /* Delete_Channel */
|
|
|
|
|
|
static void
|
|
Set_KeyFile(CHANNEL *Chan, const char *KeyFile)
|
|
{
|
|
size_t len;
|
|
|
|
assert(Chan != NULL);
|
|
assert(KeyFile != NULL);
|
|
|
|
len = strlen(KeyFile);
|
|
if (len < array_bytes(&Chan->keyfile)) {
|
|
Log(LOG_INFO, "Channel key file of %s removed.", Chan->name);
|
|
array_free(&Chan->keyfile);
|
|
}
|
|
|
|
if (len < 1)
|
|
return;
|
|
|
|
if (!array_copyb(&Chan->keyfile, KeyFile, len+1))
|
|
Log(LOG_WARNING,
|
|
"Could not set new channel key file \"%s\" for %s: %s",
|
|
KeyFile, Chan->name, strerror(errno));
|
|
else
|
|
Log(LOG_INFO|LOG_snotice,
|
|
"New local channel key file \"%s\" for %s activated.",
|
|
KeyFile, Chan->name);
|
|
} /* Set_KeyFile */
|
|
|
|
|
|
/* -eof- */
|