sessionmanager: Make session.send() return true unless there really is an error ...
[prosody.git] / plugins / mod_saslauth.lua
index 7f9a27ad2a714d40853d04558cc08321952cf671..c5d3dc917bd847b00869efc563ccc0640f75aca6 100644 (file)
 local st = require "util.stanza";
 local sm_bind_resource = require "core.sessionmanager".bind_resource;
 local sm_make_authenticated = require "core.sessionmanager".make_authenticated;
-local s2s_make_authenticated = require "core.s2smanager".make_authenticated;
 local base64 = require "util.encodings".base64;
 
 local cert_verify_identity = require "util.x509".verify_identity;
 
-local nodeprep = require "util.encodings".stringprep.nodeprep;
 local usermanager_get_sasl_handler = require "core.usermanager".get_sasl_handler;
-local t_concat, t_insert = table.concat, table.insert;
 local tostring = tostring;
 
 local secure_auth_only = module:get_option("c2s_require_encryption") or module:get_option("require_encryption");
-local anonymous_login = module:get_option("anonymous_login");
 local allow_unencrypted_plain_auth = module:get_option("allow_unencrypted_plain_auth")
 
 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 = require "util.sasl".new;
-
-local anonymous_authentication_profile = {
-       anonymous = function(username, realm)
-               return true; -- for normal usage you should always return true here
-       end
-};
 
 local function build_reply(status, ret, err_msg)
        local reply = st.stanza(status, {xmlns = xmlns_sasl});
@@ -58,16 +45,17 @@ end
 
 local function handle_status(session, status, ret, err_msg)
        if status == "failure" then
+               module:fire_event("authentication-failure", { session = session, condition = ret, text = err_msg });
                session.sasl_handler = session.sasl_handler:clean_clone();
        elseif status == "success" then
-               local username = nodeprep(session.sasl_handler.username);
-
                local ok, err = sm_make_authenticated(session, session.sasl_handler.username);
                if ok then
+                       module:fire_event("authentication-success", { session = session });
                        session.sasl_handler = nil;
                        session:reset_stream();
                else
                        module:log("warn", "SASL succeeded but username was invalid");
+                       module:fire_event("authentication-failure", { session = session, condition = "not-authorized", text = err });
                        session.sasl_handler = session.sasl_handler:clean_clone();
                        return "failure", "not-authorized", "User authenticated successfully, but username was invalid";
                end
@@ -99,13 +87,9 @@ module:hook_stanza(xmlns_sasl, "success", function (session, stanza)
        module:log("debug", "SASL EXTERNAL with %s succeeded", session.to_host);
        session.external_auth = "succeeded"
        session:reset_stream();
+       session:open_stream(session.from_host, session.to_host);
 
-       local default_stream_attr = {xmlns = "jabber:server", ["xmlns:stream"] = "http://etherx.jabber.org/streams",
-                                   ["xmlns:db"] = 'jabber:server:dialback', version = "1.0", to = session.to_host, from = session.from_host};
-       session.sends2s("<?xml version='1.0'?>");
-       session.sends2s(st.stanza("stream:stream", default_stream_attr):top_tag());
-
-       s2s_make_authenticated(session, session.to_host);
+       module:fire_event("s2s-authenticated", { session = session, host = session.to_host });
        return true;
 end)
 
@@ -199,8 +183,10 @@ local function s2s_external_auth(session, stanza)
                session.from_host = text;
        end
        session.sends2s(build_reply("success"))
-       module:log("info", "Accepting SASL EXTERNAL identity from %s", text or session.from_host);
-       s2s_make_authenticated(session, text or session.from_host)
+
+       local domain = text ~= "" and text or session.from_host;
+       module:log("info", "Accepting SASL EXTERNAL identity from %s", domain);
+       module:fire_event("s2s-authenticated", { session = session, host = domain });
        session:reset_stream();
        return true
 end
@@ -211,28 +197,15 @@ module:hook("stanza/urn:ietf:params:xml:ns:xmpp-sasl:auth", function(event)
                return s2s_external_auth(session, stanza)
        end
 
-       if session.type ~= "c2s_unauthed" then return; end
+       if session.type ~= "c2s_unauthed" or module:get_host_type() ~= "local" then return; end
 
        if session.sasl_handler and session.sasl_handler.selected then
                session.sasl_handler = nil; -- allow starting a new SASL negotiation before completing an old one
        end
        if not session.sasl_handler then
-               if anonymous_login then
-                       session.sasl_handler = new_sasl(module.host, anonymous_authentication_profile);
-               else
-                       session.sasl_handler = usermanager_get_sasl_handler(module.host);
-               end
+               session.sasl_handler = usermanager_get_sasl_handler(module.host, session);
        end
        local mechanism = stanza.attr.mechanism;
-       if anonymous_login then
-               if mechanism ~= "ANONYMOUS" then
-                       session.send(build_reply("failure", "invalid-mechanism"));
-                       return true;
-               end
-       elseif mechanism == "ANONYMOUS" then
-               session.send(build_reply("failure", "mechanism-too-weak"));
-               return true;
-       end
        if not session.secure and (secure_auth_only or (mechanism == "PLAIN" and not allow_unencrypted_plain_auth)) then
                session.send(build_reply("failure", "encryption-required"));
                return true;
@@ -268,18 +241,14 @@ module:hook("stream-features", function(event)
                if secure_auth_only and not origin.secure then
                        return;
                end
-               if anonymous_login then
-                       origin.sasl_handler = new_sasl(module.host, anonymous_authentication_profile);
-               else
-                       origin.sasl_handler = usermanager_get_sasl_handler(module.host);
-               end
-               features:tag("mechanisms", mechanisms_attr);
+               origin.sasl_handler = usermanager_get_sasl_handler(module.host, origin);
+               local mechanisms = st.stanza("mechanisms", mechanisms_attr);
                for mechanism in pairs(origin.sasl_handler:mechanisms()) do
                        if mechanism ~= "PLAIN" or origin.secure or allow_unencrypted_plain_auth then
-                               features:tag("mechanism"):text(mechanism):up();
+                               mechanisms:tag("mechanism"):text(mechanism):up();
                        end
                end
-               features:up();
+               if mechanisms[1] then features:add_child(mechanisms); end
        else
                features:tag("bind", bind_attr):tag("required"):up():up();
                features:tag("session", xmpp_session_attr):tag("optional"):up():up();
@@ -321,7 +290,10 @@ module:hook("iq/self/urn:ietf:params:xml:ns:xmpp-bind:bind", function(event)
        return true;
 end);
 
-module:hook("iq/self/urn:ietf:params:xml:ns:xmpp-session:session", function(event)
+local function handle_legacy_session(event)
        event.origin.send(st.reply(event.stanza));
        return true;
-end);
+end
+
+module:hook("iq/self/urn:ietf:params:xml:ns:xmpp-session:session", handle_legacy_session);
+module:hook("iq/host/urn:ietf:params:xml:ns:xmpp-session:session", handle_legacy_session);