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-- Prosody IM
-- 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.
--
if module:get_host_type() ~= "component" then
error("Don't load mod_component manually, it should be for a component, please see http://prosody.im/doc/components", 0);
end
local hosts = _G.hosts;
local t_concat = table.concat;
local config = require "core.configmanager";
local cm_register_component = require "core.componentmanager".register_component;
local cm_deregister_component = require "core.componentmanager".deregister_component;
local sha1 = require "util.hashes".sha1;
local st = require "util.stanza";
local log = module._log;
--- Handle authentication attempts by components
function handle_component_auth(event)
local session, stanza = event.origin, event.stanza;
if session.type ~= "component" then return; end
log("info", "Handling component auth");
if (not session.host) or #stanza.tags > 0 then
(session.log or log)("warn", "Component handshake invalid");
session:close("not-authorized");
return true;
end
local secret = config.get(session.host, "core", "component_secret");
if not secret then
(session.log or log)("warn", "Component attempted to identify as %s, but component_secret is not set", session.host);
session:close("not-authorized");
return true;
end
local supplied_token = t_concat(stanza);
local calculated_token = sha1(session.streamid..secret, true);
if supplied_token:lower() ~= calculated_token:lower() then
log("info", "Component for %s authentication failed", session.host);
session:close{ condition = "not-authorized", text = "Given token does not match calculated token" };
return true;
end
-- Authenticated now
log("info", "Component authenticated: %s", session.host);
session.component_validate_from = module:get_option_boolean("validate_from_addresses") ~= false;
-- If component not already created for this host, create one now
if not hosts[session.host].connected then
local send = session.send;
session.component_session = cm_register_component(session.host, function (_, data)
if data.attr and data.attr.xmlns == "jabber:client" then
data.attr.xmlns = nil;
end
return send(data);
end);
hosts[session.host].connected = true;
log("info", "Component successfully registered");
else
log("error", "Multiple components bound to the same address, first one wins (TODO: Implement stanza distribution)");
session:close{ condition = "conflict", text = "Component already connected" };
return true;
end
-- Signal successful authentication
session.send(st.stanza("handshake"));
return true;
end
module:hook("stanza/jabber:component:accept:handshake", handle_component_auth);
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