File

plugins/mod_auth_anonymous.lua @ 13765:7c57fb2ffbb0 13.0

mod_websocket: Merge session close handling changes from mod_c2s (bug fixes) This should bring some fixes and general robustness that mod_websocket had missed out on. The duplicated code here is not at all ideal. To prevent this happening again, we should figure out how to have the common logic in a single place, while still being able to do the websocket-specific parts that we need. The main known bug that this fixes is that it's possible for a session to get into a non-destroyable state. For example, if we try to session:close() a hibernating session, then session.conn is nil and the function will simply return without doing anything. In the mod_c2s code we already handle this, and just destroy the session. But if a hibernating websocket session is never resumed or becomes non-resumable, it will become immortal! By merging the fix from mod_c2s, the session should now be correctly destroyed.
author Matthew Wild <mwild1@gmail.com>
date Tue, 11 Mar 2025 18:44:40 +0000 (2 months ago)
parent 12977:74b9e05af71e
line wrap: on
line source
-- Prosody IM
-- Copyright (C) 2008-2010 Matthew Wild
-- Copyright (C) 2008-2010 Waqas Hussain
--
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--
-- luacheck: ignore 212

local new_sasl = require "prosody.util.sasl".new;
local datamanager = require "prosody.util.datamanager";
local hosts = prosody.hosts;

local allow_storage = module:get_option_boolean("allow_anonymous_storage", false);

-- define auth provider
local provider = {};

function provider.test_password(username, password)
	return nil, "Password based auth not supported.";
end

function provider.get_password(username)
	return nil, "Password not available.";
end

function provider.set_password(username, password)
	return nil, "Password based auth not supported.";
end

function provider.user_exists(username)
	return nil, "Only anonymous users are supported."; -- FIXME check if anonymous user is connected?
end

function provider.create_user(username, password)
	return nil, "Account creation/modification not supported.";
end

function provider.get_sasl_handler()
	local anonymous_authentication_profile = {
		anonymous = function(sasl, username, realm)
			return true; -- for normal usage you should always return true here
		end
	};
	return new_sasl(module.host, anonymous_authentication_profile);
end

function provider.users()
	return next, hosts[module.host].sessions, nil;
end

-- datamanager callback to disable writes
local function dm_callback(username, host, datastore, data)
	if host == module.host then
		return false;
	end
	return username, host, datastore, data;
end

if not module:get_option_boolean("allow_anonymous_s2s", false) then
	module:hook("route/remote", function (event)
		return false; -- Block outgoing s2s from anonymous users
	end, 300);
end

function module.load()
	if not allow_storage then
		datamanager.add_callback(dm_callback);
	end
end
function module.unload()
	if not allow_storage then
		datamanager.remove_callback(dm_callback);
	end
end

module:provides("auth", provider);