File

core/usermanager.lua @ 10367:649acbfbf7fe

util.prosodyctl: Enforce strict JID validation on user creation This is where 64ddcbc9a328 should have started. By preventing creation of users with invalid JIDs, it will slowly become safer to enforce strict validation on everything.
author Kim Alvefur <zash@zash.se>
date Fri, 01 Nov 2019 22:53:14 +0100
parent 8717:9ddd0fbbe53a
child 10633:d1cc6af0fb97
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.
--

local modulemanager = require "core.modulemanager";
local log = require "util.logger".init("usermanager");
local type = type;
local ipairs = ipairs;
local jid_bare = require "util.jid".bare;
local jid_prep = require "util.jid".prep;
local config = require "core.configmanager";
local sasl_new = require "util.sasl".new;
local storagemanager = require "core.storagemanager";

local prosody = _G.prosody;
local hosts = prosody.hosts;

local setmetatable = setmetatable;

local default_provider = "internal_plain";

local _ENV = nil;
-- luacheck: std none

local function new_null_provider()
	local function dummy() return nil, "method not implemented"; end;
	local function dummy_get_sasl_handler() return sasl_new(nil, {}); end
	return setmetatable({name = "null", get_sasl_handler = dummy_get_sasl_handler}, {
		__index = function(self, method) return dummy; end --luacheck: ignore 212
	});
end

local provider_mt = { __index = new_null_provider() };

local function initialize_host(host)
	local host_session = hosts[host];
	if host_session.type ~= "local" then return; end

	host_session.events.add_handler("item-added/auth-provider", function (event)
		local provider = event.item;
		local auth_provider = config.get(host, "authentication") or default_provider;
		if config.get(host, "anonymous_login") then
			log("error", "Deprecated config option 'anonymous_login'. Use authentication = 'anonymous' instead.");
			auth_provider = "anonymous";
		end -- COMPAT 0.7
		if provider.name == auth_provider then
			host_session.users = setmetatable(provider, provider_mt);
		end
		if host_session.users ~= nil and host_session.users.name ~= nil then
			log("debug", "Host '%s' now set to use user provider '%s'", host, host_session.users.name);
		end
	end);
	host_session.events.add_handler("item-removed/auth-provider", function (event)
		local provider = event.item;
		if host_session.users == provider then
			host_session.users = new_null_provider();
		end
	end);
	host_session.users = new_null_provider(); -- Start with the default usermanager provider
	local auth_provider = config.get(host, "authentication") or default_provider;
	if config.get(host, "anonymous_login") then auth_provider = "anonymous"; end -- COMPAT 0.7
	if auth_provider ~= "null" then
		modulemanager.load(host, "auth_"..auth_provider);
	end
end;
prosody.events.add_handler("host-activated", initialize_host, 100);

local function test_password(username, host, password)
	return hosts[host].users.test_password(username, password);
end

local function get_password(username, host)
	return hosts[host].users.get_password(username);
end

local function set_password(username, password, host, resource)
	local ok, err = hosts[host].users.set_password(username, password);
	if ok then
		prosody.events.fire_event("user-password-changed", { username = username, host = host, resource = resource });
	end
	return ok, err;
end

local function user_exists(username, host)
	if hosts[host].sessions[username] then return true; end
	return hosts[host].users.user_exists(username);
end

local function create_user(username, password, host)
	return hosts[host].users.create_user(username, password);
end

local function delete_user(username, host)
	local ok, err = hosts[host].users.delete_user(username);
	if not ok then return nil, err; end
	prosody.events.fire_event("user-deleted", { username = username, host = host });
	return storagemanager.purge(username, host);
end

local function users(host)
	return hosts[host].users.users();
end

local function get_sasl_handler(host, session)
	return hosts[host].users.get_sasl_handler(session);
end

local function get_provider(host)
	return hosts[host].users;
end

local function is_admin(jid, host)
	if host and not hosts[host] then return false; end
	if type(jid) ~= "string" then return false; end

	jid = jid_bare(jid);
	host = host or "*";

	local host_admins = config.get(host, "admins");
	local global_admins = config.get("*", "admins");

	if host_admins and host_admins ~= global_admins then
		if type(host_admins) == "table" then
			for _,admin in ipairs(host_admins) do
				if jid_prep(admin) == jid then
					return true;
				end
			end
		elseif host_admins then
			log("error", "Option 'admins' for host '%s' is not a list", host);
		end
	end

	if global_admins then
		if type(global_admins) == "table" then
			for _,admin in ipairs(global_admins) do
				if jid_prep(admin) == jid then
					return true;
				end
			end
		elseif global_admins then
			log("error", "Global option 'admins' is not a list");
		end
	end

	-- Still not an admin, check with auth provider
	if host ~= "*" and hosts[host].users and hosts[host].users.is_admin then
		return hosts[host].users.is_admin(jid);
	end
	return false;
end

return {
	new_null_provider = new_null_provider;
	initialize_host = initialize_host;
	test_password = test_password;
	get_password = get_password;
	set_password = set_password;
	user_exists = user_exists;
	create_user = create_user;
	delete_user = delete_user;
	users = users;
	get_sasl_handler = get_sasl_handler;
	get_provider = get_provider;
	is_admin = is_admin;
};