X-Git-Url: https://git.enpas.org/?a=blobdiff_plain;f=plugins%2Fmod_saslauth.lua;h=81113d7cdec327a16d859cdabb832915b7a98078;hb=37bb197d13c606a5de9ede4c7cd32f77f0398eb1;hp=52ef68c7eb26f95620e83e3d39b847bcc8dde5ec;hpb=35532120c10c00816c525c813febc0ae749464d7;p=prosody.git diff --git a/plugins/mod_saslauth.lua b/plugins/mod_saslauth.lua index 52ef68c7..81113d7c 100644 --- a/plugins/mod_saslauth.lua +++ b/plugins/mod_saslauth.lua @@ -1,36 +1,29 @@ --- Prosody IM v0.1 --- Copyright (C) 2008 Matthew Wild --- Copyright (C) 2008 Waqas Hussain +-- Prosody IM v0.4 +-- Copyright (C) 2008-2009 Matthew Wild +-- Copyright (C) 2008-2009 Waqas Hussain -- --- This program is free software; you can redistribute it and/or --- modify it under the terms of the GNU General Public License --- as published by the Free Software Foundation; either version 2 --- of the License, or (at your option) any later version. --- --- This program is distributed in the hope that it will be useful, --- but WITHOUT ANY WARRANTY; without even the implied warranty of --- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the --- GNU General Public License for more details. --- --- You should have received a copy of the GNU General Public License --- along with this program; if not, write to the Free Software --- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. +-- This project is MIT/X11 licensed. Please see the +-- COPYING file in the source package for more information. -- local st = require "util.stanza"; local sm_bind_resource = require "core.sessionmanager".bind_resource; -local jid +local sm_make_authenticated = require "core.sessionmanager".make_authenticated; local base64 = require "util.encodings".base64; +local datamanager_load = require "util.datamanager".load; local usermanager_validate_credentials = require "core.usermanager".validate_credentials; local t_concat, t_insert = table.concat, table.insert; local tostring = tostring; local jid_split = require "util.jid".split local md5 = require "util.hashes".md5; +local config = require "core.configmanager"; -local log = require "util.logger".init("mod_saslauth"); +local secure_auth_only = config.get(module:get_host(), "core", "require_encryption"); + +local log = module._log; local xmlns_sasl ='urn:ietf:params:xml:ns:xmpp-sasl'; local xmlns_bind ='urn:ietf:params:xml:ns:xmpp-bind'; @@ -41,14 +34,16 @@ local new_sasl = require "util.sasl".new; local function build_reply(status, ret, err_msg) local reply = st.stanza(status, {xmlns = xmlns_sasl}); if status == "challenge" then + log("debug", "%s", ret or ""); reply:text(base64.encode(ret or "")); elseif status == "failure" then reply:tag(ret):up(); if err_msg then reply:tag("text"):text(err_msg); end elseif status == "success" then + log("debug", "%s", ret or ""); reply:text(base64.encode(ret or "")); else - error("Unknown sasl status: "..status); + module:log("error", "Unknown sasl status: %s", status); end return reply; end @@ -57,36 +52,53 @@ local function handle_status(session, status) if status == "failure" then session.sasl_handler = nil; elseif status == "success" then - if not session.sasl_handler.username then error("SASL succeeded but we didn't get a username!"); end -- TODO move this to sessionmanager - sessionmanager.make_authenticated(session, session.sasl_handler.username); + if not session.sasl_handler.username then -- TODO move this to sessionmanager + module:log("warn", "SASL succeeded but we didn't get a username!"); + session.sasl_handler = nil; + session:reset_stream(); + return; + end + sm_make_authenticated(session, session.sasl_handler.username); session.sasl_handler = nil; session:reset_stream(); end end -local function password_callback(node, host, mechanism, raw_host) - local password = (datamanager.load(node, host, "accounts") or {}).password; -- FIXME handle hashed passwords +local function password_callback(node, hostname, realm, mechanism, decoder) + local password = (datamanager_load(node, hostname, "accounts") or {}).password; -- FIXME handle hashed passwords local func = function(x) return x; end; if password then if mechanism == "PLAIN" then return func, password; elseif mechanism == "DIGEST-MD5" then - return func, md5(node..":"..raw_host..":"..password); + if decoder then node, realm, password = decoder(node), decoder(realm), decoder(password); end + return func, md5(node..":"..realm..":"..password); end end return func, nil; end -function sasl_handler(session, stanza) +local function sasl_handler(session, stanza) if stanza.name == "auth" then -- FIXME ignoring duplicates because ejabberd does + if config.get(session.host or "*", "core", "anonymous_login") then + if stanza.attr.mechanism ~= "ANONYMOUS" then + return session.send(build_reply("failure", "invalid-mechanism")); + end + elseif stanza.attr.mechanism == "ANONYMOUS" then + return session.send(build_reply("failure", "mechanism-too-weak")); + end session.sasl_handler = new_sasl(stanza.attr.mechanism, session.host, password_callback); + if not session.sasl_handler then + return session.send(build_reply("failure", "invalid-mechanism")); + end elseif not session.sasl_handler then return; -- FIXME ignoring out of order stanzas because ejabberd does end local text = stanza[1]; if text then text = base64.decode(text); + log("debug", "%s", text); if not text then session.sasl_handler = nil; session.send(build_reply("failure", "incorrect-encoding")); @@ -96,7 +108,7 @@ function sasl_handler(session, stanza) local status, ret, err_msg = session.sasl_handler:feed(text); handle_status(session, status); local s = build_reply(status, ret, err_msg); - log("debug", "sasl reply: "..tostring(s)); + log("debug", "sasl reply: %s", tostring(s)); session.send(s); end @@ -108,22 +120,29 @@ local mechanisms_attr = { xmlns='urn:ietf:params:xml:ns:xmpp-sasl' }; local bind_attr = { xmlns='urn:ietf:params:xml:ns:xmpp-bind' }; local xmpp_session_attr = { xmlns='urn:ietf:params:xml:ns:xmpp-session' }; module:add_event_hook("stream-features", - function (session, features) - if not session.username then - features:tag("mechanisms", mechanisms_attr); - -- TODO: Provide PLAIN only if TLS is active, this is a SHOULD from the introduction of RFC 4616. This behavior could be overridden via configuration but will issuing a warning or so. - features:tag("mechanism"):text("PLAIN"):up(); - features:tag("mechanism"):text("DIGEST-MD5"):up(); - features:up(); - else - features:tag("bind", bind_attr):tag("required"):up():up(); - features:tag("session", xmpp_session_attr):up(); - end - end); + function (session, features) + if not session.username then + if secure_auth_only and not session.secure then + return; + end + features:tag("mechanisms", mechanisms_attr); + -- TODO: Provide PLAIN only if TLS is active, this is a SHOULD from the introduction of RFC 4616. This behavior could be overridden via configuration but will issuing a warning or so. + if config.get(session.host or "*", "core", "anonymous_login") then + features:tag("mechanism"):text("ANONYMOUS"):up(); + else + features:tag("mechanism"):text("DIGEST-MD5"):up(); + features:tag("mechanism"):text("PLAIN"):up(); + end + features:up(); + else + features:tag("bind", bind_attr):tag("required"):up():up(); + features:tag("session", xmpp_session_attr):up(); + end + end); module:add_iq_handler("c2s", "urn:ietf:params:xml:ns:xmpp-bind", function (session, stanza) - log("debug", "Client tried to bind to a resource"); + log("debug", "Client requesting a resource bind"); local resource; if stanza.attr.type == "set" then local bind = stanza.tags[1]; @@ -146,6 +165,6 @@ module:add_iq_handler("c2s", "urn:ietf:params:xml:ns:xmpp-bind", module:add_iq_handler("c2s", "urn:ietf:params:xml:ns:xmpp-session", function (session, stanza) - log("debug", "Client tried to bind to a resource"); + log("debug", "Client requesting a session"); session.send(st.reply(stanza)); end);