File

mod_muc_restrict_media/mod_muc_restrict_media.lua @ 5719:66986f5271c3

mod_storage_s3: Skip archive items matching on date but not full datetime Since it only encodes dates in paths, it would have returned items from outside the specified start..end range if they were from earlier or later in the same (UTC) day.
author Kim Alvefur <zash@zash.se>
date Sat, 11 Nov 2023 22:26:39 +0100
parent 5171:1682166171ff
line wrap: on
line source

module:depends"muc";

local restrict_by_default = module:get_option_boolean("muc_room_default_restrict_media", true);

local function should_restrict_media(room)
	local restrict_media = room._data.restrict_media;
	if restrict_media == nil then
		restrict_media = restrict_by_default;
	end
	return restrict_media;
end

module:hook("muc-config-form", function(event)
	local room, form = event.room, event.form;
	table.insert(form, {
		name = "{xmpp:prosody.im}muc#roomconfig_unaffiliated_media",
		type = "boolean",
		label = "Display inline media (images, etc.) from non-members",
		value = not should_restrict_media(room),
	});
end);

module:hook("muc-config-submitted", function(event)
	local room, fields, changed = event.room, event.fields, event.changed;
	local new_restrict_media = not fields["{xmpp:prosody.im}muc#roomconfig_unaffiliated_media"];
	if new_restrict_media ~= should_restrict_media(room) then
		if new_restrict_media == restrict_by_default then
			room._data.restrict_media = nil;
		else
			room._data.restrict_media = new_restrict_media;
		end
		if type(changed) == "table" then
			changed["{xmpp:prosody.im}muc#roomconfig_unaffiliated_media"] = true;
		else
			event.changed = true;
		end
	end
end);

module:hook("muc-disco#info", function (event)
	local room, form, formdata = event.room, event.form, event.formdata;

	local allow_unaffiliated_media = not should_restrict_media(room);
	table.insert(form, {
		name = "{xmpp:prosody.im}muc#roomconfig_unaffiliated_media",
		type = "boolean",
	});
	formdata["{xmpp:prosody.im}muc#roomconfig_unaffiliated_media"] = allow_unaffiliated_media;
end);

local function strip_xhtml_img(tag)
	if tag.attr.xmlns == "http://www.w3.org/1999/xhtml" and tag.name == "img" then
		tag.name = "i";
		tag:text(tag.attr.alt or "<image blocked>");
		tag.attr = { xmlns = tag.attr.xmlns, title = tag.attr.title };
		tag:maptags(strip_xhtml_img);
	else
		tag:maptags(strip_xhtml_img);
	end

	return tag;
end

local function filter_media_tags(tag)
	local xmlns = tag.attr.xmlns;
	if xmlns == "jabber:x:oob" then
		return nil;
	elseif xmlns == "urn:xmpp:reference:0" then
		if tag:get_child("media-sharing", "urn:xmpp:sims:1") then
			return nil;
		end
	elseif xmlns == "http://jabber.org/protocol/xhtml-im" then
		return strip_xhtml_img(tag);
	end
	return tag;
end

module:hook("muc-occupant-groupchat", function (event)
	local stanza = event.stanza;
	if stanza.attr.type ~= "groupchat" then return; end
	if event.room:get_affiliation(stanza.attr.from) then return end
	if should_restrict_media(event.room) then
		stanza:maptags(filter_media_tags);
	end
end, 20);