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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2022 Sadie Powell <sadie@witchery.services>
*
* 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/account.h"
enum
{
// From UnrealIRCd.
ERR_KILLDENY = 485
};
class RegisteredChannel final
: public SimpleChannelMode
{
public:
RegisteredChannel(Module* Creator)
: SimpleChannelMode(Creator, "c_registered", 'r')
{
if (ServerInstance->Config->ConfValue("services")->getBool("disablemodes"))
DisableAutoRegister();
}
bool OnModeChange(User* source, User* dest, Channel* channel, Modes::Change& change) override
{
if (IS_LOCAL(source))
{
source->WriteNumeric(ERR_NOPRIVILEGES, "Only a server may modify the +r channel mode");
return false;
}
return SimpleChannelMode::OnModeChange(source, dest, channel, change);
}
};
class RegisteredUser final
: public SimpleUserMode
{
public:
RegisteredUser(Module* Creator)
: SimpleUserMode(Creator, "u_registered", 'r')
{
if (ServerInstance->Config->ConfValue("services")->getBool("disablemodes"))
DisableAutoRegister();
}
bool OnModeChange(User* source, User* dest, Channel* channel, Modes::Change& change) override
{
if (IS_LOCAL(source))
{
source->WriteNumeric(ERR_NOPRIVILEGES, "Only a server may modify the +r user mode");
return false;
}
return SimpleUserMode::OnModeChange(source, dest, channel, change);
}
};
class ServProtect final
: public SimpleUserMode
{
public:
ServProtect(Module* Creator)
: SimpleUserMode(Creator, "servprotect", 'k', true)
{
}
bool OnModeChange(User* source, User* dest, Channel* channel, Modes::Change& change) override
{
// As this mode is only intended for use by pseudoclients the only way
// to set it is by introducing a user with it.
return false;
}
};
class ModuleServices final
: public Module
{
private:
RegisteredChannel registeredcmode;
RegisteredUser registeredumode;
ServProtect servprotectmode;
public:
ModuleServices()
: Module(VF_VENDOR, "Provides support for integrating with a services server.")
, registeredcmode(this)
, registeredumode(this)
, servprotectmode(this)
{
}
ModResult OnKill(User* source, User* dest, const std::string& reason) override
{
if (!source)
return MOD_RES_PASSTHRU;
if (dest->IsModeSet(servprotectmode))
{
source->WriteNumeric(ERR_KILLDENY, INSP_FORMAT("You are not permitted to kill {} services!", ServerInstance->Config->Network));
return MOD_RES_DENY;
}
return MOD_RES_PASSTHRU;
}
ModResult OnRawMode(User* user, Channel* chan, const Modes::Change& change) override
{
if (!IS_LOCAL(user) || change.adding || change.param.empty())
return MOD_RES_PASSTHRU; // We only care about local users removing prefix modes.
const PrefixMode* const pm = change.mh->IsPrefixMode();
if (!pm)
return MOD_RES_PASSTHRU; // Mode is not a prefix mode.
auto* target = ServerInstance->Users.Find(change.param);
if (!target)
return MOD_RES_PASSTHRU; // Target does not exist.
Membership* memb = chan->GetUser(target);
if (!memb || !memb->HasMode(pm))
return MOD_RES_PASSTHRU; // Target does not have the mode.
if (target->IsModeSet(servprotectmode))
{
user->WriteNumeric(ERR_RESTRICTED, chan->name, INSP_FORMAT("You are not permitted to remove privileges from {} services!", ServerInstance->Config->Network));
return MOD_RES_DENY;
}
return MOD_RES_PASSTHRU;
}
ModResult OnUserPreKick(User* source, Membership* memb, const std::string& reason) override
{
if (memb->user->IsModeSet(servprotectmode))
{
source->WriteNumeric(ERR_RESTRICTED, memb->chan->name, INSP_FORMAT("You are not permitted to kick {} services!", ServerInstance->Config->Network));
return MOD_RES_DENY;
}
return MOD_RES_PASSTHRU;
}
void OnUserPostNick(User* user, const std::string& oldnick) override
{
if (user->IsModeSet(registeredumode) && irc::equals(oldnick, user->nick))
registeredumode.RemoveMode(user);
}
};
MODULE_INIT(ModuleServices)
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