--- Prosody IM v0.4
--- Copyright (C) 2008-2009 Matthew Wild
--- Copyright (C) 2008-2009 Waqas Hussain
+-- 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.
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 connlisteners = require "net.connlisteners";
+local config = require "core.configmanager";
local cm_register_component = require "core.componentmanager".register_component;
local cm_deregister_component = require "core.componentmanager".deregister_component;
-local uuid_gen = require "util.uuid".generate;
local sha1 = require "util.hashes".sha1;
-local st = stanza;
-local init_xmlhandlers = require "core.xmlhandlers";
-
-local sessions = {};
+local st = require "util.stanza";
local log = module._log;
-local component_listener = { default_port = 5347; default_mode = "*a"; default_interface = config.get("*", "core", "component_interface") or "127.0.0.1" };
-
-local xmlns_component = 'jabber:component:accept';
-
---- Callbacks/data for xmlhandlers to handle streams for us ---
-
-local stream_callbacks = { stream_tag = "http://etherx.jabber.org/streams|stream", default_ns = xmlns_component };
-
-function stream_callbacks.error(session, error, data, data2)
- log("warn", "Error processing component stream: "..tostring(error));
- if error == "no-stream" then
- session:close("invalid-namespace");
- elseif error == "xml-parse-error" and data == "unexpected-element-close" then
- session.log("debug", "Unexpected close of '%s' tag", data2);
- session:close("xml-not-well-formed");
- else
- session.log("debug", "External component %s XML parse error: %s", tostring(session.host), tostring(error));
- print(data, debug.traceback())
- session:close("xml-not-well-formed");
- end
-end
-
-function stream_callbacks.streamopened(session, attr)
- if config.get(attr.to, "core", "component_module") ~= "component" then
- -- Trying to act as a component domain which
- -- hasn't been configured
- session:close{ condition = "host-unknown", text = tostring(attr.to).." does not match any configured external components" };
- return;
- end
-
- -- Store the original host (this is used for config, etc.)
- session.user = attr.to;
- -- Set the host for future reference
- session.host = config.get(attr.to, "core", "component_address") or attr.to;
- -- Note that we don't create the internal component
- -- until after the external component auths successfully
-
- session.streamid = uuid_gen();
- session.notopen = nil;
-
- session.send(st.stanza("stream:stream", { xmlns=xmlns_component,
- ["xmlns:stream"]='http://etherx.jabber.org/streams', id=session.streamid, from=session.host }):top_tag());
-
-end
-
-function stream_callbacks.streamclosed(session)
- session.send("</stream:stream>");
- session.notopen = true;
-end
-
-local core_process_stanza = core_process_stanza;
-
-function stream_callbacks.handlestanza(session, stanza)
- -- Namespaces are icky.
- log("warn", "Handing stanza with name %s", stanza.name);
- if stanza.name ~= "handshake" then
- return core_process_stanza(session, stanza);
- else
- handle_component_auth(session, stanza);
- end
-end
-
--- Handle authentication attempts by components
function handle_component_auth(session, stanza)
+ 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;
end
local secret = config.get(session.user, "core", "component_secret");
if not secret then
- log("warn", "Component attempted to identify as %s, but component_password is not set", session.user);
+ (session.log or log)("warn", "Component attempted to identify as %s, but component_secret is not set", session.user);
session:close("not-authorized");
return;
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;
end
-- Authenticated now
+ log("info", "Component authenticated: %s", session.host);
-- 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) return send(data); end);
+ 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)");
end
session.send(st.stanza("handshake"));
end
-module:add_handler("component", "handshake", xmlns_component, handle_component_auth);
-
---- Closing a component connection
-local stream_xmlns_attr = {xmlns='urn:ietf:params:xml:ns:xmpp-streams'};
-local function session_close(session, reason)
- local log = session.log or log;
- if session.conn then
- if reason then
- if type(reason) == "string" then -- assume stream error
- log("info", "Disconnecting component, <stream:error> is: %s", reason);
- session.send(st.stanza("stream:error"):tag(reason, {xmlns = 'urn:ietf:params:xml:ns:xmpp-streams' }));
- elseif type(reason) == "table" then
- if reason.condition then
- local stanza = st.stanza("stream:error"):tag(reason.condition, stream_xmlns_attr):up();
- if reason.text then
- stanza:tag("text", stream_xmlns_attr):text(reason.text):up();
- end
- if reason.extra then
- stanza:add_child(reason.extra);
- end
- log("info", "Disconnecting component, <stream:error> is: %s", tostring(stanza));
- session.send(stanza);
- elseif reason.name then -- a stanza
- log("info", "Disconnecting component, <stream:error> is: %s", tostring(reason));
- session.send(reason);
- end
- end
- end
- session.send("</stream:stream>");
- session.conn.close();
- component_listener.disconnect(session.conn, "stream error");
- end
-end
-
---- Component connlistener
-function component_listener.listener(conn, data)
- local session = sessions[conn];
- if not session then
- local _send = conn.write;
- session = { type = "component", conn = conn, send = function (data) return _send(tostring(data)); end };
- sessions[conn] = session;
-
- -- Logging functions --
-
- local conn_name = "xep114-"..tostring(conn):match("[a-f0-9]+$");
- session.log = logger.init(conn_name);
- session.close = session_close;
-
- session.log("info", "Incoming XEP-0114 connection");
-
- local parser = lxp.new(init_xmlhandlers(session, stream_callbacks), "|");
- session.parser = parser;
-
- session.notopen = true;
-
- function session.data(conn, data)
- local ok, err = parser:parse(data);
- if ok then return; end
- session:close("xml-not-well-formed");
- end
-
- session.dispatch_stanza = stream_callbacks.handlestanza;
-
- end
- if data then
- session.data(conn, data);
- end
-end
-
-function component_listener.disconnect(conn, err)
- local session = sessions[conn];
- if session then
- (session.log or log)("info", "component disconnected: %s (%s)", tostring(session.host), tostring(err));
- if session.host then
- log("debug", "deregistering component");
- cm_deregister_component(session.host);
- hosts[session.host].connected = nil;
- end
- sessions[conn] = nil;
- session = nil;
- collectgarbage("collect");
- end
-end
-
-connlisteners.register('component', component_listener);
-
-module:add_event_hook("server-started",
- function ()
- if net_activate_ports then
- net_activate_ports("component", "component", {5437}, "tcp");
- else
- error("No net_activate_ports: Using an incompatible version of Prosody?");
- end
- end);
+module:add_handler("component", "handshake", "jabber:component:accept", handle_component_auth);
projects / prosody.git / blobdiff