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90 lines
3.4 KiB
90 lines
3.4 KiB
-- 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 st = require "prosody.util.stanza";
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local t_concat = table.concat;
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local secure_auth_only = module:get_option("c2s_require_encryption",
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module:get_option("require_encryption", true))
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or not(module:get_option("allow_unencrypted_plain_auth"));
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local sessionmanager = require "prosody.core.sessionmanager";
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local usermanager = require "prosody.core.usermanager";
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local nodeprep = require "prosody.util.encodings".stringprep.nodeprep;
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local resourceprep = require "prosody.util.encodings".stringprep.resourceprep;
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module:add_feature("jabber:iq:auth");
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module:hook("stream-features", function(event)
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local origin, features = event.origin, event.features;
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if secure_auth_only and not origin.secure then
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-- Sorry, not offering to insecure streams!
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return;
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elseif not origin.username then
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features:tag("auth", {xmlns='http://jabber.org/features/iq-auth'}):up();
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end
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end);
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module:hook("stanza/iq/jabber:iq:auth:query", function(event)
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local session, stanza = event.origin, event.stanza;
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if session.type ~= "c2s_unauthed" then
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(session.sends2s or session.send)(st.error_reply(stanza, "cancel", "service-unavailable",
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"Legacy authentication is only allowed for unauthenticated client connections."));
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return true;
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end
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if secure_auth_only and not session.secure then
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session.send(st.error_reply(stanza, "modify", "not-acceptable", "Encryption (SSL or TLS) is required to connect to this server"));
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return true;
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end
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local query = stanza.tags[1];
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local username = query:get_child("username");
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local password = query:get_child("password");
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local resource = query:get_child("resource");
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if not (username and password and resource) then
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local reply = st.reply(stanza);
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session.send(reply:query("jabber:iq:auth")
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:tag("username"):up()
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:tag("password"):up()
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:tag("resource"):up());
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else
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username, password, resource = t_concat(username), t_concat(password), t_concat(resource);
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username = nodeprep(username);
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resource = resourceprep(resource)
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if not (username and resource) then
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session.send(st.error_reply(stanza, "modify", "bad-request"));
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return true;
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end
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if usermanager.test_password(username, session.host, password) then
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-- Authentication successful!
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local success, err = sessionmanager.make_authenticated(session, username);
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if success then
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local err_type, err_msg;
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success, err_type, err, err_msg = sessionmanager.bind_resource(session, resource);
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if not success then
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session.send(st.error_reply(stanza, err_type, err, err_msg));
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session.username, session.type = nil, "c2s_unauthed"; -- FIXME should this be placed in sessionmanager?
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return true;
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elseif resource ~= session.resource then -- server changed resource, not supported by legacy auth
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session.send(st.error_reply(stanza, "cancel", "conflict", "The requested resource could not be assigned to this session."));
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session:close(); -- FIXME undo resource bind and auth instead of closing the session?
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return true;
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end
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session.send(st.reply(stanza));
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else
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session.send(st.error_reply(stanza, "auth", "not-authorized", err));
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end
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else
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session.send(st.error_reply(stanza, "auth", "not-authorized"));
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end
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end
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return true;
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end);
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