mirror of
https://github.com/inspircd/inspircd.git
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125 lines
3.7 KiB
C++
125 lines
3.7 KiB
C++
/*
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* InspIRCd -- Internet Relay Chat Daemon
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*
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* Copyright (C) 2013-2014, 2017, 2019-2023 Sadie Powell <sadie@witchery.services>
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* Copyright (C) 2012-2013, 2016 Attila Molnar <attilamolnar@hush.com>
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* Copyright (C) 2012 Robby <robby@chatbelgie.be>
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* Copyright (C) 2009, 2012 Daniel De Graaf <danieldg@inspircd.org>
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* Copyright (C) 2008 Robin Burchell <robin+git@viroteck.net>
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* Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
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* Copyright (C) 2006 Craig Edwards <brain@inspircd.org>
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*
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* This file is part of InspIRCd. InspIRCd is free software: you can
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* redistribute it and/or modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation, version 2.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "inspircd.h"
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#include "numerichelper.h"
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class CommandChghost final
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: public Command
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{
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public:
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CharState hostmap;
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CommandChghost(Module* Creator)
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: Command(Creator, "CHGHOST", 2)
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{
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access_needed = CmdAccess::OPERATOR;
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syntax = { "<nick> <host>" };
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translation = { TR_NICK, TR_TEXT };
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}
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CmdResult Handle(User* user, const Params& parameters) override
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{
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if (parameters[1].length() > ServerInstance->Config->Limits.MaxHost)
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{
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user->WriteNotice("*** CHGHOST: Host too long");
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return CmdResult::FAILURE;
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}
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for (const auto chr : parameters[1])
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{
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if (!hostmap.test(static_cast<unsigned char>(chr)))
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{
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user->WriteNotice("*** CHGHOST: Invalid characters in hostname");
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return CmdResult::FAILURE;
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}
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}
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auto* dest = ServerInstance->Users.Find(parameters[0]);
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// Allow services to change the host of partially connected users.
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if (!dest || (!dest->IsFullyConnected() && !user->server->IsService()))
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{
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user->WriteNumeric(Numerics::NoSuchNick(parameters[0]));
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return CmdResult::FAILURE;
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}
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if (IS_LOCAL(dest))
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{
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dest->ChangeDisplayedHost(parameters[1]);
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if (!user->server->IsService())
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{
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ServerInstance->SNO.WriteGlobalSno('a', user->nick+" used CHGHOST to make the displayed host of "+dest->nick+" become "+dest->GetDisplayedHost());
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}
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}
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return CmdResult::SUCCESS;
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}
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RouteDescriptor GetRouting(User* user, const Params& parameters) override
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{
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return ROUTE_OPT_UCAST(parameters[0]);
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}
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};
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class ModuleChgHost final
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: public Module
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{
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private:
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CommandChghost cmd;
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public:
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ModuleChgHost()
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: Module(VF_VENDOR | VF_OPTCOMMON, "Adds the /CHGHOST command which allows server operators to change the displayed hostname of a user.")
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, cmd(this)
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{
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}
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void ReadConfig(ConfigStatus& status) override
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{
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const auto& tag = ServerInstance->Config->ConfValue("hostname");
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const std::string hmap = tag->getString("charmap", "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz.-_/0123456789", 1);
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CharState newhostmap;
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for (const auto chr : hmap)
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{
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// A hostname can not contain NUL, LF, CR, or SPACE.
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if (chr == 0x00 || chr == 0x0A || chr == 0x0D || chr == 0x20)
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throw ModuleException(this, FMT::format("<hostname:charmap> can not contain character 0x{:02X} ({})", chr, chr));
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newhostmap.set(static_cast<unsigned char>(chr));
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}
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std::swap(newhostmap, cmd.hostmap);
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}
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void GetLinkData(Module::LinkData& data) override
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{
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for (size_t i = 0; i < cmd.hostmap.size(); ++i)
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if (cmd.hostmap[i])
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data["hostchars"].push_back(static_cast<unsigned char>(i));
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}
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};
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MODULE_INIT(ModuleChgHost)
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