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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2009-2010 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"
static std::bitset<256> allowedmap;
class NewIsChannelHandler : public HandlerBase1<bool, const std::string&>
{
public:
NewIsChannelHandler() { }
~NewIsChannelHandler() { }
bool Call(const std::string&);
};
bool NewIsChannelHandler::Call(const std::string& channame)
{
if (channame.empty() || channame.length() > ServerInstance->Config->Limits.ChanMax || channame[0] != '#')
return false;
for (std::string::const_iterator c = channame.begin(); c != channame.end(); ++c)
{
unsigned int i = *c & 0xFF;
if (!allowedmap[i])
return false;
}
return true;
}
class ModuleChannelNames : public Module
{
NewIsChannelHandler myhandler;
caller1<bool, const std::string&> rememberer;
bool badchan;
public:
ModuleChannelNames() : rememberer(ServerInstance->IsChannel), badchan(false)
{
}
void init() CXX11_OVERRIDE
{
ServerInstance->IsChannel = &myhandler;
Implementation eventlist[] = { I_OnRehash, I_OnUserKick };
ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
OnRehash(NULL);
}
void ValidateChans()
{
badchan = true;
std::vector<Channel*> chanvec;
for (chan_hash::const_iterator i = ServerInstance->chanlist->begin(); i != ServerInstance->chanlist->end(); ++i)
{
if (!ServerInstance->IsChannel(i->second->name))
chanvec.push_back(i->second);
}
std::vector<Channel*>::reverse_iterator c2 = chanvec.rbegin();
while (c2 != chanvec.rend())
{
Channel* c = *c2++;
if (c->IsModeSet('P') && c->GetUserCounter())
{
std::vector<std::string> modes;
modes.push_back(c->name);
modes.push_back("-P");
ServerInstance->Modes->Process(modes, ServerInstance->FakeClient);
}
const UserMembList* users = c->GetUsers();
for(UserMembCIter j = users->begin(); j != users->end(); )
{
if (IS_LOCAL(j->first))
{
// KickUser invalidates the iterator
UserMembCIter it = j++;
c->KickUser(ServerInstance->FakeClient, it->first, "Channel name no longer valid");
}
else
++j;
}
}
badchan = false;
}
void OnRehash(User* user) CXX11_OVERRIDE
{
ConfigTag* tag = ServerInstance->Config->ConfValue("channames");
std::string denyToken = tag->getString("denyrange");
std::string allowToken = tag->getString("allowrange");
allowedmap.set();
irc::portparser denyrange(denyToken, false);
int denyno = -1;
while (0 != (denyno = denyrange.GetToken()))
allowedmap[denyno & 0xFF] = false;
irc::portparser allowrange(allowToken, false);
int allowno = -1;
while (0 != (allowno = allowrange.GetToken()))
allowedmap[allowno & 0xFF] = true;
allowedmap[0x07] = false; // BEL
allowedmap[0x20] = false; // ' '
allowedmap[0x2C] = false; // ','
ValidateChans();
}
void OnUserKick(User* source, Membership* memb, const std::string &reason, CUList& except_list) CXX11_OVERRIDE
{
if (badchan)
{
const UserMembList* users = memb->chan->GetUsers();
for(UserMembCIter i = users->begin(); i != users->end(); i++)
if (i->first != memb->user)
except_list.insert(i->first);
}
}
~ModuleChannelNames()
{
ServerInstance->IsChannel = rememberer;
ValidateChans();
}
Version GetVersion() CXX11_OVERRIDE
{
return Version("Implements config tags which allow changing characters allowed in channel names", VF_VENDOR);
}
};
MODULE_INIT(ModuleChannelNames)
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