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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2019 linuxdaemon <linuxdaemon.irc@gmail.com>
* Copyright (C) 2019 Matt Schatz <genius3000@g3k.solutions>
* Copyright (C) 2013, 2017, 2021 Sadie Powell <sadie@witchery.services>
* Copyright (C) 2012-2014, 2016 Attila Molnar <attilamolnar@hush.com>
* Copyright (C) 2012, 2019 Robby <robby@chatbelgie.be>
* Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
* Copyright (C) 2008, 2010 Craig Edwards <brain@inspircd.org>
* Copyright (C) 2007 Robin Burchell <robin+git@viroteck.net>
* Copyright (C) 2006-2007 Dennis Friis <peavey@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/ctctags.h"
// User mode +d - filter out channel messages and channel notices
class DeafMode : public ModeHandler
{
public:
DeafMode(Module* Creator) : ModeHandler(Creator, "deaf", 'd', PARAM_NONE, MODETYPE_USER) { }
ModeAction OnModeChange(User* source, User* dest, Channel* channel, std::string& parameter, bool adding) CXX11_OVERRIDE
{
if (adding == dest->IsModeSet(this))
return MODEACTION_DENY;
if (adding)
dest->WriteNotice("*** You have enabled user mode +d, deaf mode. This mode means you WILL NOT receive any messages from any channels you are in. If you did NOT mean to do this, use /mode " + dest->nick + " -d.");
dest->SetMode(this, adding);
return MODEACTION_ALLOW;
}
};
// User mode +D - filter out user messages and user notices
class PrivDeafMode : public ModeHandler
{
public:
PrivDeafMode(Module* Creator) : ModeHandler(Creator, "privdeaf", 'D', PARAM_NONE, MODETYPE_USER)
{
if (!ServerInstance->Config->ConfValue("deaf")->getBool("enableprivdeaf"))
DisableAutoRegister();
}
ModeAction OnModeChange(User* source, User* dest, Channel* channel, std::string& parameter, bool adding) CXX11_OVERRIDE
{
if (adding == dest->IsModeSet(this))
return MODEACTION_DENY;
if (adding)
dest->WriteNotice("*** You have enabled user mode +D, private deaf mode. This mode means you WILL NOT receive any messages and notices from any nicks. If you did NOT mean to do this, use /mode " + dest->nick + " -D.");
dest->SetMode(this, adding);
return MODEACTION_ALLOW;
}
};
class ModuleDeaf
: public Module
, public CTCTags::EventListener
{
private:
DeafMode deafmode;
PrivDeafMode privdeafmode;
std::string deaf_bypasschars;
std::string deaf_bypasschars_uline;
bool privdeafuline;
ModResult HandleChannel(User* source, Channel* target, CUList& exemptions, bool is_bypasschar, bool is_bypasschar_uline)
{
const Channel::MemberMap& ulist = target->GetUsers();
for (Channel::MemberMap::const_iterator i = ulist.begin(); i != ulist.end(); ++i)
{
User* member = i->first;
// Allow if the user doesn't have the mode set.
if (!member->IsModeSet(deafmode))
continue;
// Allow if the message begins with a uline char and the
// user is on a ulined server.
if (is_bypasschar_uline && member->server->IsULine())
continue;
// Allow if the prefix begins with a normal char and the
// user is not on a ulined server.
if (is_bypasschar && !member->server->IsULine())
continue;
exemptions.insert(member);
}
return MOD_RES_PASSTHRU;
}
ModResult HandleUser(User* source, User* target)
{
// Allow if the mode is not set.
if (!target->IsModeSet(privdeafmode))
return MOD_RES_PASSTHRU;
// Reject if the source is ulined and privdeafuline is disaled.
if (!privdeafuline && source->server->IsULine())
return MOD_RES_DENY;
// Reject if the source doesn't have the right priv.
if (!source->HasPrivPermission("users/ignore-privdeaf"))
return MOD_RES_DENY;
return MOD_RES_ALLOW;
}
public:
ModuleDeaf()
: CTCTags::EventListener(this)
, deafmode(this)
, privdeafmode(this)
{
}
void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE
{
ConfigTag* tag = ServerInstance->Config->ConfValue("deaf");
deaf_bypasschars = tag->getString("bypasschars");
deaf_bypasschars_uline = tag->getString("bypasscharsuline");
privdeafuline = tag->getBool("privdeafuline", true);
}
ModResult OnUserPreTagMessage(User* user, const MessageTarget& target, CTCTags::TagMessageDetails& details) CXX11_OVERRIDE
{
switch (target.type)
{
case MessageTarget::TYPE_CHANNEL:
return HandleChannel(user, target.Get<Channel>(), details.exemptions, false, false);
case MessageTarget::TYPE_USER:
return HandleUser(user, target.Get<User>());
case MessageTarget::TYPE_SERVER:
break;
}
return MOD_RES_PASSTHRU;
}
ModResult OnUserPreMessage(User* user, const MessageTarget& target, MessageDetails& details) CXX11_OVERRIDE
{
switch (target.type)
{
case MessageTarget::TYPE_CHANNEL:
{
// If we have no bypasschars_uline in config, and this is a bypasschar (regular)
// Then it is obviously going to get through +d, no exemption list required
bool is_bypasschar = (deaf_bypasschars.find(details.text[0]) != std::string::npos);
if (deaf_bypasschars_uline.empty() && is_bypasschar)
return MOD_RES_PASSTHRU;
// If it matches both bypasschar and bypasschar_uline, it will get through.
bool is_bypasschar_uline = (deaf_bypasschars_uline.find(details.text[0]) != std::string::npos);
if (is_bypasschar && is_bypasschar_uline)
return MOD_RES_PASSTHRU;
return HandleChannel(user, target.Get<Channel>(), details.exemptions, is_bypasschar, is_bypasschar_uline);
}
case MessageTarget::TYPE_USER:
return HandleUser(user, target.Get<User>());
case MessageTarget::TYPE_SERVER:
break;
}
return MOD_RES_PASSTHRU;
}
Version GetVersion() CXX11_OVERRIDE
{
return Version("Adds user mode d (deaf) which prevents users from receiving channel messages.", VF_VENDOR);
}
};
MODULE_INIT(ModuleDeaf)
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