view mod_muc_archive/mod_muc_archive.lua @ 4432:e83284d4d5c2

mod_auth_ccert/README: Add setting to ensure Prosdy asks for client certificate This used to be the default for all services, but since it triggers annoying popups in web browsers it was inverted in Prosody and only s2s enables it, so it needs to be explicitly enabled for c2s again. See trunk 115b5e32d960 Thanks debacle
author Kim Alvefur <zash@zash.se>
date Sat, 06 Feb 2021 21:34:25 +0100
parents 7e96b95924bd
children
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-- The MIT License (MIT)
--
-- Copyright (C) 2009 Thilo Cestonaro
-- Copyright (C) 2009 Waqas Hussain
-- Copyright (C) 2009-2013 Matthew Wild
-- Copyright (C) 2013 Kim Alvefur
-- Copyright (C) 2013 Marco Cirillo
-- Copyright (c) 2020 JC Brand
--
-- Permission is hereby granted, free of charge, to any person obtaining a copy of
-- this software and associated documentation files (the "Software"), to deal in
-- the Software without restriction, including without limitation the rights to
-- use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
-- the Software, and to permit persons to whom the Software is furnished to do so,
-- subject to the following conditions:
--
-- The above copyright notice and this permission notice shall be included in all
-- copies or substantial portions of the Software.
--
-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
-- FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
-- COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
-- IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-- CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
--
local hosts = prosody.hosts;
local tostring = tostring;
local st = require "util.stanza";
local split_jid = require "util.jid".split;
local jid_bare = require "util.jid".bare;
local time_now = os.time;

local muc_form_config_option = "muc#roomconfig_enablelogging"

local log_all_rooms = module:get_option_boolean("muc_log_all_rooms", false);
local log_by_default = module:get_option_boolean("muc_log_by_default", false);
local log_presences = module:get_option_boolean("muc_log_presences", true);

local archive_store = "muc_logging_archive";
local archive = module:open_store(archive_store, "archive");

local xmlns_muc_user = "http://jabber.org/protocol/muc#user";

if archive.name == "null" or not archive.find then
	if not archive.find then
		module:log("error", "Attempt to open archive storage returned a driver without archive API support");
		module:log("error", "mod_%s does not support archiving",
			archive._provided_by or archive.name and "storage_"..archive.name.."(?)" or "<unknown>");
	else
		module:log("error", "Attempt to open archive storage returned null driver");
	end
	module:log("info", "See https://prosody.im/doc/storage and https://prosody.im/doc/archiving for more information");
	return false;
end


-- Module Definitions

local function get_room_from_jid(jid)
	local node, host = split_jid(jid);
	local component = hosts[host];
	if component then
		local muc = component.modules.muc
		if muc and rawget(muc,"rooms") then
			-- We're running 0.9.x or 0.10 (old MUC API)
			return muc.rooms[jid];
		elseif muc and rawget(muc,"get_room_from_jid") then
			-- We're running >0.10 (new MUC API)
			return muc.get_room_from_jid(jid);
		else
			return
		end
	end
end

local function logging_enabled(room)
	if log_all_rooms then
		return true;
	end
	if room._data.hidden then -- do not log data of private rooms
		return false;
	end
	local enabled = room._data.logging;
	if enabled == nil then
		return log_by_default;
	end
	return enabled;
end


local function log_if_needed(event)
	local stanza = event.stanza;

	if (stanza.name == "presence") or
		(stanza.name == "iq") or
		(stanza.name == "message" and tostring(stanza.attr.type) == "groupchat")
	then
		local node, host = split_jid(stanza.attr.to);
		if node and host then
			local room = get_room_from_jid(node.."@"..host)
			if not room then return end
			-- Policy check
			if not logging_enabled(room) then return end

			local muc_to = nil
			local muc_from = nil;

			if stanza.name == "presence" and stanza.attr.type == nil then
				muc_from = stanza.attr.to;
			elseif stanza.name == "iq" and stanza.attr.type == "set" then
				-- kick, to is the room, from is the admin, nick who is kicked is attr of iq->query->item
				if stanza.tags[1] and stanza.tags[1].name == "query" then
					local tmp = stanza.tags[1];
					if tmp.tags[1] ~= nil and tmp.tags[1].name == "item" and tmp.tags[1].attr.nick then
						tmp = tmp.tags[1];
						for jid, nick in pairs(room._jid_nick) do
							if nick == stanza.attr.to .. "/" .. tmp.attr.nick then
								muc_to = nick;
								break;
							end
						end
					end
				end
			else
				for jid, nick in pairs(room._jid_nick) do
					if jid == stanza.attr.from then
						muc_from = nick;
						break;
					end
				end
			end

			if (muc_from or muc_to) then
				local stored_stanza = st.clone(stanza);
				stored_stanza.attr.from = muc_from;
				stored_stanza.attr.to = muc_to;

				if stanza.name == "message" then
					local actor = jid_bare(room._occupants[muc_from].jid);
					local affiliation = room:get_affiliation(actor) or "none";
					local role = room:get_role(actor) or room:get_default_role(affiliation);
					stored_stanza:add_direct_child(st.stanza("x", { xmlns = xmlns_muc_user })
						:tag("item", { affiliation = affiliation; role = role; jid = actor }));
				end

				local with = stanza.name
				if stanza.attr.type then
					with = with .. "<" .. stanza.attr.type
				end
				archive:append(node, nil, stored_stanza, time_now(), with);
			end
		end
	end
end

if not log_all_rooms then
	module:hook("muc-config-form", function(event)
		local room, form = event.room, event.form;
		table.insert(form,
		{
			name = muc_form_config_option,
			type = "boolean",
			label = "Enable Logging?",
			value = logging_enabled(room),
		}
		);
	end);

	module:hook("muc-config-submitted", function(event)
		local room, fields, changed = event.room, event.fields, event.changed;
		local new = fields[muc_form_config_option];
		if new ~= room._data.logging then
			room._data.logging = new;
			if type(changed) == "table" then
				changed[muc_form_config_option] = true;
			else
				event.changed = true;
			end
		end
	end);
end

module:hook("message/bare", log_if_needed, 1);

if log_presences then
	module:hook("iq/bare", log_if_needed, 1);
	module:hook("presence/full", log_if_needed, 1);
end

module:log("debug", "module mod_muc_archive loaded!");