diff options
| -rw-r--r-- | net/xmppcomponent_listener.lua | 171 | ||||
| -rwxr-xr-x | prosody | 1 |
2 files changed, 172 insertions, 0 deletions
diff --git a/net/xmppcomponent_listener.lua b/net/xmppcomponent_listener.lua new file mode 100644 index 00000000..03675e19 --- /dev/null +++ b/net/xmppcomponent_listener.lua @@ -0,0 +1,171 @@ +-- Prosody IM v0.4 +-- Copyright (C) 2008-2009 Matthew Wild +-- Copyright (C) 2008-2009 Waqas Hussain +-- +-- This project is MIT/X11 licensed. Please see the +-- COPYING file in the source package for more information. +-- + + +local hosts = _G.hosts; + +local t_concat = table.concat; + +local lxp = require "lxp"; +local logger = require "util.logger"; +local config = require "core.configmanager"; +local eventmanager = require "core.eventmanager"; +local connlisteners = require "net.connlisteners"; +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 = require "util.stanza"; +local init_xmlhandlers = require "core.xmlhandlers"; + +local sessions = {}; + +local log = logger.init("componentlistener"); + +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("warn", "Unexpected close of '%s' tag", data2); + session:close("xml-not-well-formed"); + else + session.log("warn", "External component %s XML parse error: %s", tostring(session.host), tostring(error)); + 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. + if not stanza.attr.xmlns and stanza.name == "handshake" then + stanza.attr.xmlns = xmlns_component; + end + return core_process_stanza(session, stanza); +end + +--- 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 = "jcp"..tostring(conn):match("[a-f0-9]+$"); + session.log = logger.init(conn_name); + session.close = session_close; + + session.log("info", "Incoming Jabber component 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('xmppcomponent', component_listener); @@ -156,6 +156,7 @@ end net_activate_ports("c2s", "xmppclient", {5222}, (global_ssl_ctx and "tls") or "tcp"); net_activate_ports("s2s", "xmppserver", {5269}, "tcp"); +net_activate_ports("component", "xmppcomponent", {}, "tcp"); net_activate_ports("legacy_ssl", "xmppclient", {}, "ssl"); if cl.get("console") then |