Add the cloak_static module to cloak using a fixed value.

docs/conf/modules.conf.example

@@ -716,6 +716,29 @@
 #       case="lower"
 #       pathparts="1">
 
+#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#
+# Static cloak module: Adds the "static" (fixed value) cloak method.
+#<module name="cloak_static">
+#
+#-#-#-#-#-#-#-#-#-#- ACCOUNT CLOAK CONFIGURATION -#-#-#-#-#-#-#-#-#-#-#
+# To use the cloak_static module you must define a <cloak> tag. This  #
+# tag can have the following fields.                                  #
+#                                                                     #
+#  class - If non-empty then a comma-delimited list of connect class  #
+#  names that a user has to be in to get the cloak from this tag.     #
+#                                                                     #
+#  cloak - The cloak to give to users.                                #
+#                                                                     #
+# IMPORTANT: Changing these details will break all of your existing   #
+# bans. If you do not want this to happen you can define multiple     #
+# cloak tags. The first will be used for hostnames and the rest will  #
+# be used for checking if a user is banned in a channel.              #
+#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#
+#
+#<cloak method="static"
+#       class=""
+#       cloak="some.fixed.value">
+
 #-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#
 # Codepage module: Allows using a custom 8-bit codepage for nicknames
 # and case mapping.

src/modules/m_cloak_static.cpp

@@ -0,0 +1,84 @@
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
+ *
+ *   Copyright (C) 2023 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/cloak.h"
+
+class StaticMethod final
+	: public Cloak::Method
+{
+private:
+	// The cloak to set on users.
+	std::string cloak;
+
+public:
+	StaticMethod(const Cloak::Engine* engine, const std::shared_ptr<ConfigTag>& tag) ATTR_NOT_NULL(2)
+		: Cloak::Method(engine, tag)
+		, cloak(tag->getString("cloak"))
+	{
+	}
+
+	std::string Generate(LocalUser* user) override ATTR_NOT_NULL(2)
+	{
+		if (!MatchesUser(user))
+			return {}; // We shouldn't cloak this user.
+
+		return cloak;
+	}
+
+	std::string Generate(const std::string& hostip) override
+	{
+		return cloak;
+	}
+
+	void GetLinkData(Module::LinkData& data, std::string& compatdata) override
+	{
+		data["cloak"] = cloak;
+	}
+};
+
+class StaticEngine final
+	: public Cloak::Engine
+{
+public:
+	StaticEngine(Module* Creator)
+		: Cloak::Engine(Creator, "static")
+	{
+	}
+
+	Cloak::MethodPtr Create(const std::shared_ptr<ConfigTag>& tag, bool primary) override
+	{
+		return std::make_shared<StaticMethod>(this, tag);
+	}
+};
+
+class ModuleCloakStatic final
+	: public Module
+{
+private:
+	StaticEngine nickcloak;
+
+public:
+	ModuleCloakStatic()
+		: Module(VF_VENDOR, "Adds the static cloaking method for use with the cloak module.")
+		, nickcloak(this)
+	{
+	}
+};
+
+MODULE_INIT(ModuleCloakStatic)