--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/mod_proxy65/mod_proxy65.lua Mon Oct 26 23:32:53 2009 +0100
@@ -0,0 +1,189 @@
+-- Copyright (C) 2009 Thilo Cestonaro
+--
+-- 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("proxy65 should be loaded as a component, please see http://prosody.im/doc/components", 0);
+end
+
+
+local jid_split = require "util.jid".split;
+local st = require "util.stanza";
+local component_register = require "core.componentmanager".register_component;
+local component_deregister = require "core.componentmanager".deregister_component;
+local configmanager = require "core.configmanager";
+local config_get = require "core.configmanager".get;
+local connlisteners_register = require "net.connlisteners".register;
+local connlisteners_deregister = require "net.connlisteners".deregister;
+local adns, dns = require "net.adns", require "net.dns";
+local add_task = require "util.timer".add_task;
+local max_dns_depth = config.get("*", "core", "dns_max_depth") or 3;
+local dns_timeout = config.get("*", "core", "dns_timeout") or 60;
+
+local replies_cache = {};
+local _host = module:get_host();
+local _name = "SOCKS5 Bytestreams Service";
+local _config = config_get(_host, "core", "proxy65");
+local connlistener = {registered=false};
+local sessions = {};
+local component;
+
+if _config == nil then
+ _config = {};
+end
+if _config.port == nil then
+ _config.port = 5000;
+end
+
+local function register()
+ connlistener = { default_port = _config.port; default_interface = _config.interface };
+ connlistener.registered = connlisteners_register('proxy65', connlistener);
+ if(connlistener.registered == false) then
+ error("Proxy65: Could not establish a connection listener. Check your configuration please.");
+ else
+ module:add_item("proxy65", {jid=_host, name=_name})
+ component = component_register(_host, function(origin, stanza)
+ local to_node, to_host, to_resource = jid_split(stanza.attr.to);
+ if to_node == nil then
+ local type = stanza.attr.type;
+ if type == "error" or type == "result" then return; end
+ if stanza.name == "iq" and type == "get" then
+ local xmlns = stanza.tags[1].attr.xmlns
+ if xmlns == "http://jabber.org/protocol/disco#info" then
+ origin.send(get_disco_info(stanza));
+ return true;
+ elseif xmlns == "http://jabber.org/protocol/disco#items" then
+ origin.send(get_disco_items(stanza));
+ return true;
+ elseif xmlns == "http://jabber.org/protocol/bytestreams" and stanza.tags[1].attr.sid ~= nil then
+ origin.send(get_stream_host(stanza));
+ return true;
+ end
+ end
+ end
+ return;
+ end);
+ end
+end
+
+local function getDefaultIP(host)
+ local handle;
+ handle = adns.lookup(function (reply)
+ handle = nil;
+
+ -- COMPAT: This is a compromise for all you CNAME-(ab)users :)
+ if not (reply and reply[#reply] and reply[#reply].a) then
+ local count = max_dns_depth;
+ reply = dns.peek(host, "CNAME", "IN");
+ while count > 0 and reply and reply[#reply] and not reply[#reply].a and reply[#reply].cname do
+ module:log("debug", "Looking up %s (DNS depth is %d)", tostring(reply[#reply].cname), count);
+ reply = dns.peek(reply[#reply].cname, "A", "IN") or dns.peek(reply[#reply].cname, "CNAME", "IN");
+ count = count - 1;
+ end
+ end
+ -- end of CNAME resolving
+
+ if reply and reply[#reply] and reply[#reply].a then
+ module:log("debug", "DNS reply for %s gives us %s", host, reply[#reply].a);
+ _config.interface = reply[#reply].a
+ return register();
+ else
+ module:log("debug", "DNS lookup failed to get a response for %s", host);
+ if host:find(".") ~= nil then
+ host = host:gsub("^[^%.]*%.", "");
+ if host:find(".") ~= nil then -- still one dot left?
+ return getDefaultIP(host);
+ end
+ end
+ error("Proxy65: Could not get an interface to bind to. Please configure one.");
+ end
+ end, host, "A", "IN");
+
+ -- Set handler for DNS timeout
+ add_task(dns_timeout, function ()
+ if handle then
+ adns.cancel(handle, true);
+ end
+ end);
+ return true;
+end
+
+if _config.interface ~= nil then
+ register();
+else
+ getDefaultIP(_host); -- try to DNS lookup module:host()
+end
+
+function new_session(conn)
+ local w = function(s) conn.write(s:gsub("\n", "\r\n")); end;
+ local session = { conn = conn;
+ send = function (t) w(tostring(t)); end;
+ print = function (t) w("| "..tostring(t).."\n"); end;
+ disconnect = function () conn.close(); end;
+ };
+
+ return session;
+end
+
+function connlistener.listener(conn, data)
+ local session = sessions[conn];
+
+ if not session then
+ session = new_session(conn);
+ sessions[conn] = session;
+ end
+ if data then
+ end
+end
+
+function connlistener.disconnect(conn, err)
+
+end
+
+local function get_disco_info(stanza)
+ local reply = replies_cache.disco_info;
+ if reply == nil then
+ reply = st.iq({type='result', from=_host}):query("http://jabber.org/protocol/disco#info")
+ :tag("identity", {category='proxy', type='bytestreams', name=_name}):up()
+ :tag("feature", {var="http://jabber.org/protocol/bytestreams"});
+ replies_cache.disco_info = reply;
+ end
+
+ reply.attr.id = stanza.attr.id;
+ reply.attr.to = stanza.attr.from;
+ return reply;
+end
+
+local function get_disco_items(stanza)
+ local reply = replies_cache.disco_items;
+ if reply == nil then
+ reply = st.iq({type='result', from=_host}):query("http://jabber.org/protocol/disco#items");
+ replies_cache.disco_info = reply;
+ end
+
+ reply.attr.id = stanza.attr.id;
+ reply.attr.to = stanza.attr.from;
+ return reply;
+end
+
+local function get_stream_host(stanza)
+ local reply = replies_cache.stream_host;
+ if reply == nil then
+ reply = st.iq({type="result", from=_host})
+ :query("http://jabber.org/protocol/bytestreams")
+ :tag("streamhost", {jid=_host, host=_config.interface, port=_config.port}); -- TODO get the correct data
+ replies_cache.stream_host = reply;
+ end
+
+ reply.attr.id = stanza.attr.id;
+ reply.attr.to = stanza.attr.from;
+ reply.tags[1].attr.sid = stanza.tags[1].attr.sid;
+ return reply;
+end
+
+module.unload = function()
+ component_deregister(_host);
+ connlisteners_deregister("proxy65");
+end
\ No newline at end of file