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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2019 Matt Schatz <genius3000@g3k.solutions>
* Copyright (C) 2017, 2020-2024 Sadie Powell <sadie@witchery.services>
* Copyright (C) 2012 Robby <robby@chatbelgie.be>
* Copyright (C) 2012 DjSlash <djslash@djslash.org>
* Copyright (C) 2012 Attila Molnar <attilamolnar@hush.com>
* Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
* Copyright (C) 2006 Craig Edwards <brain@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 "modules/exemption.h"
#include "modules/extban.h"
#include "numerichelper.h"
class ModuleBlockColor final
: public Module
{
private:
ExtBan::Acting extban;
CheckExemption::EventProvider exemptionprov;
SimpleChannelMode bc;
public:
ModuleBlockColor()
: Module(VF_VENDOR, "Adds channel mode c (blockcolor) which allows channels to block messages which contain IRC formatting codes.")
, extban(this, "blockcolor", 'c')
, exemptionprov(this)
, bc(this, "blockcolor", 'c')
{
}
ModResult OnUserPreMessage(User* user, MessageTarget& target, MessageDetails& details) override
{
if ((target.type == MessageTarget::TYPE_CHANNEL) && (IS_LOCAL(user)))
{
auto* c = target.Get<Channel>();
ModResult res = exemptionprov.Check(user, c, "blockcolor");
if (res == MOD_RES_ALLOW)
return MOD_RES_PASSTHRU;
bool modeset = c->IsModeSet(bc);
if (!extban.GetStatus(user, c).check(!modeset))
{
std::string_view ctcpname; // Unused.
std::string_view message;
if (!details.IsCTCP(ctcpname, message))
message = details.text;
auto it = std::find_if(message.begin(), message.end(), [](const char& chr)
{
switch (chr)
{
case '\x02': // Bold
case '\x03': // Color
case '\x04': // Hex Color
case '\x1D': // Italic
case '\x11': // Monospace
case '\x16': // Reverse
case '\x1E': // Strikethrough
case '\x1F': // Underline
case '\x0F': // Reset
return true;
}
return false;
});
if (it != message.end())
{
if (modeset)
user->WriteNumeric(Numerics::CannotSendTo(c, "messages containing formatting characters", &bc));
else
user->WriteNumeric(Numerics::CannotSendTo(c, "messages containing formatting characters", extban));
return MOD_RES_DENY;
}
}
}
return MOD_RES_PASSTHRU;
}
};
MODULE_INIT(ModuleBlockColor)
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