plugins/mod_auth_internal_plain.lua

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-- Prosody IM
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-- Copyright (C) 2008-2010 Matthew Wild
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-- Copyright (C) 2008-2010 Waqas Hussain
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--
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-- This project is MIT/X11 licensed. Please see the
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-- COPYING file in the source package for more information.
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--
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local datamanager = require "util.datamanager";
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local log = require "util.logger".init("auth_internal_plain");
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local type = type;
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local error = error;
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local ipairs = ipairs;
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local hashes = require "util.hashes";
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local jid_bare = require "util.jid".bare;
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local config = require "core.configmanager";
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local usermanager = require "core.usermanager";
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local new_sasl = require "util.sasl".new;
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local nodeprep = require "util.encodings".stringprep.nodeprep;
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local hosts = hosts;
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local prosody = _G.prosody;
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function new_default_provider(host)
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	local provider = { name = "internal_plain" };
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	log("debug", "initializing default authentication provider for host '%s'", host);
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	function provider.test_password(username, password)
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		log("debug", "test password '%s' for user %s at host %s", password, username, module.host);
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		local credentials = datamanager.load(username, host, "accounts") or {};
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		if password == credentials.password then
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			return true;
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		else
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			return nil, "Auth failed. Invalid username or password.";
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		end
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	end
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	function provider.get_password(username)
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		log("debug", "get_password for username '%s' at host '%s'", username, module.host);
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		return (datamanager.load(username, host, "accounts") or {}).password;
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	end
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	function provider.set_password(username, password)
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		local account = datamanager.load(username, host, "accounts");
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		if account then
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			account.password = password;
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			return datamanager.store(username, host, "accounts", account);
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		end
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		return nil, "Account not available.";
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	end
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	function provider.user_exists(username)
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		local account = datamanager.load(username, host, "accounts");
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		if not account then
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			log("debug", "account not found for username '%s' at host '%s'", username, module.host);
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			return nil, "Auth failed. Invalid username";
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		end
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		return true;
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	end
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	function provider.create_user(username, password)
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		return datamanager.store(username, host, "accounts", {password = password});
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	end
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	function provider.get_sasl_handler()
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		local realm = module:get_option("sasl_realm") or module.host;
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		local getpass_authentication_profile = {
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			plain = function(sasl, username, realm)
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				local prepped_username = nodeprep(username);
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				if not prepped_username then
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					log("debug", "NODEprep failed on username: %s", username);
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					return "", nil;
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				end
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				local password = usermanager.get_password(prepped_username, realm);
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				if not password then
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					return "", nil;
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				end
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				return password, true;
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			end
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		};
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		return new_sasl(realm, getpass_authentication_profile);
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	end
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	return provider;
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end
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module:add_item("auth-provider", new_default_provider(module.host));