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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
*
* This file is part of InspIRCd. InspIRCd 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, version 2.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "inspircd.h"
#include "listmode.h"
ListModeBase::ListModeBase(Module* Creator, const std::string& Name, char modechar, const std::string &eolstr, unsigned int lnum, unsigned int eolnum, bool autotidy, const std::string &ctag)
: ModeHandler(Creator, Name, modechar, PARAM_ALWAYS, MODETYPE_CHANNEL, MC_LIST),
listnumeric(lnum), endoflistnumeric(eolnum), endofliststring(eolstr), tidy(autotidy),
configtag(ctag), extItem("listbase_mode_" + name + "_list", Creator)
{
list = true;
}
void ListModeBase::DisplayList(User* user, Channel* channel)
{
ChanData* cd = extItem.get(channel);
if (cd)
{
for (ModeList::reverse_iterator it = cd->list.rbegin(); it != cd->list.rend(); ++it)
{
user->WriteNumeric(listnumeric, "%s %s %s %lu", channel->name.c_str(), it->mask.c_str(), (!it->setter.empty() ? it->setter.c_str() : ServerInstance->Config->ServerName.c_str()), (unsigned long) it->time);
}
}
user->WriteNumeric(endoflistnumeric, "%s :%s", channel->name.c_str(), endofliststring.c_str());
}
void ListModeBase::DisplayEmptyList(User* user, Channel* channel)
{
user->WriteNumeric(endoflistnumeric, "%s :%s", channel->name.c_str(), endofliststring.c_str());
}
void ListModeBase::RemoveMode(Channel* channel, Modes::ChangeList& changelist)
{
ChanData* cd = extItem.get(channel);
if (cd)
{
for (ModeList::iterator it = cd->list.begin(); it != cd->list.end(); it++)
{
changelist.push_remove(this, it->mask);
}
}
}
void ListModeBase::DoRehash()
{
ConfigTagList tags = ServerInstance->Config->ConfTags(configtag);
limitlist oldlimits = chanlimits;
chanlimits.clear();
for (ConfigIter i = tags.first; i != tags.second; i++)
{
// For each <banlist> tag
ConfigTag* c = i->second;
ListLimit limit(c->getString("chan"), c->getInt("limit"));
if (limit.mask.size() && limit.limit > 0)
chanlimits.push_back(limit);
}
if (chanlimits.empty())
chanlimits.push_back(ListLimit("*", 64));
// Most of the time our settings are unchanged, so we can avoid iterating the chanlist
if (oldlimits == chanlimits)
return;
const chan_hash& chans = ServerInstance->GetChans();
for (chan_hash::const_iterator i = chans.begin(); i != chans.end(); ++i)
{
ChanData* cd = extItem.get(i->second);
if (cd)
cd->maxitems = -1;
}
}
unsigned int ListModeBase::FindLimit(const std::string& channame)
{
for (limitlist::iterator it = chanlimits.begin(); it != chanlimits.end(); ++it)
{
if (InspIRCd::Match(channame, it->mask))
{
// We have a pattern matching the channel
return it->limit;
}
}
return 64;
}
unsigned int ListModeBase::GetLimitInternal(const std::string& channame, ChanData* cd)
{
if (cd->maxitems < 0)
cd->maxitems = FindLimit(channame);
return cd->maxitems;
}
unsigned int ListModeBase::GetLimit(Channel* channel)
{
ChanData* cd = extItem.get(channel);
if (!cd) // just find the limit
return FindLimit(channel->name);
return GetLimitInternal(channel->name, cd);
}
ModeAction ListModeBase::OnModeChange(User* source, User*, Channel* channel, std::string ¶meter, bool adding)
{
// Try and grab the list
ChanData* cd = extItem.get(channel);
if (adding)
{
if (tidy)
ModeParser::CleanMask(parameter);
if (parameter.length() > 250)
return MODEACTION_DENY;
// If there was no list
if (!cd)
{
// Make one
cd = new ChanData;
extItem.set(channel, cd);
}
// Check if the item already exists in the list
for (ModeList::iterator it = cd->list.begin(); it != cd->list.end(); it++)
{
if (parameter == it->mask)
{
/* Give a subclass a chance to error about this */
TellAlreadyOnList(source, channel, parameter);
// it does, deny the change
return MODEACTION_DENY;
}
}
if ((IS_LOCAL(source)) && (cd->list.size() >= GetLimitInternal(channel->name, cd)))
{
/* List is full, give subclass a chance to send a custom message */
TellListTooLong(source, channel, parameter);
return MODEACTION_DENY;
}
/* Ok, it *could* be allowed, now give someone subclassing us
* a chance to validate the parameter.
* The param is passed by reference, so they can both modify it
* and tell us if we allow it or not.
*
* eg, the subclass could:
* 1) allow
* 2) 'fix' parameter and then allow
* 3) deny
*/
if (ValidateParam(source, channel, parameter))
{
// And now add the mask onto the list...
cd->list.push_back(ListItem(parameter, source->nick, ServerInstance->Time()));
return MODEACTION_ALLOW;
}
else
{
/* If they deny it they have the job of giving an error message */
return MODEACTION_DENY;
}
}
else
{
// We're taking the mode off
if (cd)
{
for (ModeList::iterator it = cd->list.begin(); it != cd->list.end(); ++it)
{
if (parameter == it->mask)
{
cd->list.erase(it);
return MODEACTION_ALLOW;
}
}
}
/* Tried to remove something that wasn't set */
TellNotSet(source, channel, parameter);
return MODEACTION_DENY;
}
}
bool ListModeBase::ValidateParam(User*, Channel*, std::string&)
{
return true;
}
void ListModeBase::TellListTooLong(User* source, Channel* channel, std::string& parameter)
{
source->WriteNumeric(ERR_BANLISTFULL, "%s %s :Channel ban list is full", channel->name.c_str(), parameter.c_str());
}
void ListModeBase::TellAlreadyOnList(User*, Channel*, std::string&)
{
}
void ListModeBase::TellNotSet(User*, Channel*, std::string&)
{
}
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