Merge 0.6->0.7

[prosody.git] / plugins / mod_saslauth.lua

diff --git a/plugins/mod_saslauth.lua b/plugins/mod_saslauth.lua
index be324b24e4a557c3a59d544e2286d5408be0ccee..d407e5da8588ff5bc8787e05fb5232c34326b03e 100644 (file)
--- a/plugins/mod_saslauth.lua
+++ b/plugins/mod_saslauth.lua
@@ -1,7 +1,7 @@
 -- Prosody IM
--- Copyright (C) 2008-2009 Matthew Wild
--- Copyright (C) 2008-2009 Waqas Hussain
---
+-- 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.
 --
@@ -28,21 +28,42 @@ local config = require "core.configmanager";
 local secure_auth_only = module:get_option("c2s_require_encryption") or module:get_option("require_encryption");
 local sasl_backend = module:get_option("sasl_backend") or "builtin";
 
+-- Cyrus config options
+local require_provisioning = module:get_option("cyrus_require_provisioning") or false;
+local cyrus_service_realm = module:get_option("cyrus_service_realm");
+local cyrus_service_name = module:get_option("cyrus_service_name");
+local cyrus_application_name = module:get_option("cyrus_application_name");
+
 local log = module._log;
 
 local xmlns_sasl ='urn:ietf:params:xml:ns:xmpp-sasl';
 local xmlns_bind ='urn:ietf:params:xml:ns:xmpp-bind';
 local xmlns_stanzas ='urn:ietf:params:xml:ns:xmpp-stanzas';
 
-local new_sasl
-if sasl_backend == "cyrus" then
-       local cyrus_new = require "util.sasl_cyrus".new;
-       new_sasl = function(realm)
-               return cyrus_new(realm, module:get_option("cyrus_service_name") or "xmpp");
+local new_sasl;
+if sasl_backend == "builtin" then
+       new_sasl = require "util.sasl".new;
+elseif sasl_backend == "cyrus" then
+       prosody.unlock_globals(); --FIXME: Figure out why this is needed and
+                                 -- why cyrussasl isn't caught by the sandbox
+       local ok, cyrus = pcall(require, "util.sasl_cyrus");
+       prosody.lock_globals();
+       if ok then
+               local cyrus_new = cyrus.new;
+               new_sasl = function(realm)
+                       return cyrus_new(
+                               cyrus_service_realm or realm,
+                               cyrus_service_name or "xmpp",
+                               cyrus_application_name or "prosody"
+                       );
+               end
+       else
+               module:log("error", "Failed to load Cyrus SASL because: %s", cyrus);
+               error("Failed to load Cyrus SASL");
        end
 else
-       if sasl_backend ~= "builtin" then module:log("warn", "Unknown SASL backend %s", sasl_backend); end;
-       new_sasl = require "util.sasl".new;
+       module:log("error", "Unknown SASL backend: %s", sasl_backend);
+       error("Unknown SASL backend");
 end
 
 local default_authentication_profile = {
@@ -83,21 +104,29 @@ local function build_reply(status, ret, err_msg)
        return reply;
 end
 
-local function handle_status(session, status)
+local function handle_status(session, status, ret, err_msg)
        if status == "failure" then
                session.sasl_handler = session.sasl_handler:clean_clone();
        elseif status == "success" then
                local username = nodeprep(session.sasl_handler.username);
-               if not 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;
+
+               if not(require_provisioning) or usermanager_user_exists(username, session.host) then
+                       local aret, err = sm_make_authenticated(session, session.sasl_handler.username);
+                       if aret then
+                               session.sasl_handler = nil;
+                               session:reset_stream();
+                       else
+                               module:log("warn", "SASL succeeded but username was invalid");
+                               session.sasl_handler = session.sasl_handler:clean_clone();
+                               return "failure", "not-authorized", "User authenticated successfully, but username was invalid";
+                       end
+               else
+                       module:log("warn", "SASL succeeded but we don't have an account provisioned for %s", username);
+                       session.sasl_handler = session.sasl_handler:clean_clone();
+                       return "failure", "not-authorized", "User authenticated successfully, but not provisioned for XMPP";
                end
-               sm_make_authenticated(session, session.sasl_handler.username);
-               session.sasl_handler = nil;
-               session:reset_stream();
        end
+       return status, ret, err_msg;
 end
 
 local function sasl_handler(session, stanza)
@@ -131,7 +160,7 @@ local function sasl_handler(session, stanza)
                end
        end
        local status, ret, err_msg = session.sasl_handler:process(text);
-       handle_status(session, status);
+       status, ret, err_msg = handle_status(session, status, ret, err_msg);
        local s = build_reply(status, ret, err_msg);
        log("debug", "sasl reply: %s", tostring(s));
        session.send(s);
@@ -150,10 +179,11 @@ module:hook("stream-features", function(event)
                if secure_auth_only and not origin.secure then
                        return;
                end
+               local realm = module:get_option("sasl_realm") or origin.host;
                if module:get_option("anonymous_login") then
-                       origin.sasl_handler = new_sasl(origin.host, anonymous_authentication_profile);
+                       origin.sasl_handler = new_sasl(realm, anonymous_authentication_profile);
                else
-                       origin.sasl_handler = new_sasl(origin.host, default_authentication_profile);
+                       origin.sasl_handler = new_sasl(realm, default_authentication_profile);
                        if not (module:get_option("allow_unencrypted_plain_auth")) and not origin.secure then
                                origin.sasl_handler:forbidden({"PLAIN"});
                        end