Option to hide moderator name who made actions WIP (#137).

prosody-modules/mod_muc_anonymize_moderation_actions/README.markdown

@@ -0,0 +1,32 @@
+<!--
+SPDX-FileCopyrightText: 2024 John Livingston <https://www.john-livingston.fr/>
+SPDX-License-Identifier: AGPL-3.0-only
+-->
+# mod_muc_anonymize_moderation_actions
+
+This modules allows to anonymize affiliation and role changes in MUC rooms.
+
+Enabling this module on a MUC Virtualhost will add a settings in the roomconfig form.
+When the feature is enabled, when a moderator changes the role or affiliation of an occupant (kick, ban, ...) their name will be removed from the broadcasted message, to not disclose who did the moderation action.
+
+This is particularly usefull to prevent some revenge when a moderator bans someone.
+
+This module is under AGPL-3.0 license.
+
+It was tested on Prosody 0.12.x.
+
+## Configuration
+
+Just enable the module on your MUC VirtualHost.
+The feature will be accessible throught the room configuration form.
+
+You can tweak the position of the settings in the MUC configuration form using `anonymize_moderation_actions_form_position`.
+This value will be passed as priority for the "muc-config-form" hook, so you can move field up by increasing the value, or down by decreasing the value.
+
+By default, the field will be between muc#roomconfig_changesubject and muc#roomconfig_moderatedroom (default value is `78`).
+
+``` lua
+VirtualHost "muc.example.com"
+  modules_enabled = { "muc_anonymize_moderation_actions" }
+  anonymize_moderation_actions_form_position = 96
+```

prosody-modules/mod_muc_anonymize_moderation_actions/mod_muc_anonymize_moderation_actions.lua

@@ -0,0 +1,44 @@
+-- mod_muc_anonymize_moderation_actions
+--
+-- SPDX-FileCopyrightText: 2024 John Livingston <https://www.john-livingston.fr/>
+-- SPDX-License-Identifier: AGPL-3.0-only
+
+-- form_position: the position in the room config form (this value will be passed as priority for the "muc-config-form" hook).
+-- By default, field will be between muc#roomconfig_changesubject and muc#roomconfig_moderatedroom
+local form_position = module:get_option_number("anonymize_moderation_actions_form_position") or 80-2;
+
+local function get_anonymize_moderation_actions(room)
+	return room._data.anonymize_moderation_actions or false;
+end
+
+local function set_anonymize_moderation_actions(room, anonymize_moderation_actions)
+	anonymize_moderation_actions = anonymize_moderation_actions and true or nil;
+	if get_anonymize_moderation_actions(room) == anonymize_moderation_actions then return false; end
+	room._data.anonymize_moderation_actions = anonymize_moderation_actions;
+	return true;
+end
+
+-- Config form declaration
+local function add_form_option(event)
+  table.insert(event.form, {
+    name = "muc#roomconfig_anonymize_moderation_actions";
+    type = "boolean";
+    label = "Anonymize moderation actions";
+    desc = "When this is enabled, moderation actions will be anonymized, to avoid disclosing who is banning/kicking/… occupants.";
+    value = get_anonymize_moderation_actions(event.room);
+  });
+end
+
+local function config_submitted(event)
+  set_anonymize_moderation_actions(event.room, event.value);
+end
+
+local function remove_actor(event)
+  if (event.room and get_anonymize_moderation_actions(event.room)) then
+    event.actor = nil;
+  end
+end
+
+module:hook("muc-config-submitted/muc#roomconfig_anonymize_moderation_actions", config_submitted);
+module:hook("muc-config-form", add_form_option, form_position);
+module:hook("muc-broadcast-presence", remove_actor);

prosody-modules/mod_muc_http_defaults/mod_muc_http_defaults.lua

@@ -8,6 +8,7 @@
 -- * "slow_mode_duration"
 -- * "mute_anonymous"
 -- * "moderation_delay"
+-- * "anonymize_moderation_actions"
 -- These options are introduced in the Peertube livechat plugin.
 --
 -- The "slow_mode_duration" comes with mod_muc_slow_mode.
@@ -132,6 +133,9 @@ local function apply_config(room, settings)
 			-- (and thus we don't need to broadcast changes)
 			room._data.livechat_muc_terms = config.livechat_muc_terms;
 		end
+		if (type(config.anonymize_moderation_actions) == "boolean") then
+			room._data.anonymize_moderation_actions = config.anonymize_moderation_actions;
+		end
 	elseif config ~= nil then
 		module:log("error", "Invalid config returned from API for %s: %q", room.jid, config);
 		return nil, "format", { field = "config" };