# HG changeset patch # User Matthew Wild # Date 1335638837 -3600 # Node ID ceac1a0e74ea72871fa983c9c07affa5e056b6fd # Parent 28b0a8cd950a57eed5adda459378bfc522f347aa mod_proxy65: Remove diff -r 28b0a8cd950a -r ceac1a0e74ea mod_proxy65/mod_proxy65.lua --- a/mod_proxy65/mod_proxy65.lua Sat Apr 28 19:44:42 2012 +0100 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,269 +0,0 @@ --- Copyright (C) 2009 Thilo Cestonaro --- --- This project is MIT/X11 licensed. Please see the --- COPYING file in the source package for more information. --- ---[[ -* to restart the proxy in the console: e.g. -module:unload("proxy65"); -> server.removeserver(); -module:load("proxy65", ); -]]-- - -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 componentmanager = require "core.componentmanager"; -local config_get = require "core.configmanager".get; -local connlisteners = require "net.connlisteners"; -local sha1 = require "util.hashes".sha1; - -local host, name = module:get_host(), "SOCKS5 Bytestreams Service"; -local sessions, transfers, component, replies_cache = {}, {}, nil, {}; - -local proxy_port = config_get(host, "core", "proxy65_port") or 5000; -local proxy_interface = config_get(host, "core", "proxy65_interface") or "*"; -local proxy_address = config_get(host, "core", "proxy65_address") or (proxy_interface ~= "*" and proxy_interface) or host; -local proxy_acl = config_get(host, "core", "proxy65_acl"); - -local connlistener = { default_port = proxy_port, default_interface = proxy_interface, default_mode = "*a" }; - -function connlistener.listener(conn, data) - local session = sessions[conn] or {}; - - if session.setup == nil and data ~= nil and data:sub(1):byte() == 0x05 and data:len() > 2 then - local nmethods = data:sub(2):byte(); - local methods = data:sub(3); - local supported = false; - for i=1, nmethods, 1 do - if(methods:sub(i):byte() == 0x00) then -- 0x00 == method: NO AUTH - supported = true; - break; - end - end - if(supported) then - module:log("debug", "new session found ... ") - session.setup = true; - sessions[conn] = session; - conn.write(string.char(5, 0)); - end - return; - end - if session.setup then - if session.sha ~= nil and transfers[session.sha] ~= nil then - local sha = session.sha; - if transfers[sha].activated == true and transfers[sha].initiator == conn and transfers[sha].target ~= nil then - transfers[sha].target.write(data); - return; - end - end - if data ~= nil and data:len() == 0x2F and -- 40 == length of SHA1 HASH, and 7 other bytes => 47 => 0x2F - data:sub(1):byte() == 0x05 and -- SOCKS5 has 5 in first byte - data:sub(2):byte() == 0x01 and -- CMD must be 1 - data:sub(3):byte() == 0x00 and -- RSV must be 0 - data:sub(4):byte() == 0x03 and -- ATYP must be 3 - data:sub(5):byte() == 40 and -- SHA1 HASH length must be 40 (0x28) - data:sub(-2):byte() == 0x00 and -- PORT must be 0, size 2 byte - data:sub(-1):byte() == 0x00 - then - local sha = data:sub(6, 45); -- second param is not count! it's the ending index (included!) - if transfers[sha] == nil then - transfers[sha] = {}; - transfers[sha].activated = false; - transfers[sha].target = conn; - session.sha = sha; - module:log("debug", "target connected ... "); - elseif transfers[sha].target ~= nil then - transfers[sha].initiator = conn; - session.sha = sha; - module:log("debug", "initiator connected ... "); - end - conn.write(string.char(5, 0, 0, 3, sha:len()) .. sha .. string.char(0, 0)); -- VER, REP, RSV, ATYP, BND.ADDR (sha), BND.PORT (2 Byte) - else - log:module("warn", "Neither data transfer nor initial connect of a participator of a transfer.") - conn.close(); - end - else - if data ~= nil then - module:log("warn", "unknown connection with no authentication data -> closing it"); - conn.close(); - end - end -end - -function connlistener.disconnect(conn, err) - local session = sessions[conn]; - if session then - if session.sha and transfers[session.sha] then - local initiator, target = transfers[session.sha].initiator, transfers[session.sha].target; - if initiator == conn and target ~= nil then - target.close(); - elseif target == conn and initiator ~= nil then - initiator.close(); - end - transfers[session.sha] = nil; - end - -- Clean up any session-related stuff here - sessions[conn] = nil; - end -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_items = reply; - end - - reply.attr.id = stanza.attr.id; - reply.attr.to = stanza.attr.from; - return reply; -end - -local function _jid_join(node, host, resource) - local ret = host; - if ret then - if node then - ret = node .. "@" .. ret; - end - if resource then - ret = ret .. "/" .. resource; - end - end - return ret; -end - -local function get_stream_host(origin, stanza) - local reply = replies_cache.stream_host; - local err_reply = replies_cache.stream_host_err; - local sid = stanza.tags[1].attr.sid; - local allow = false; - local jid_node, jid_host, jid_resource = jid_split(stanza.attr.from); - - if stanza.attr.from == nil then - jid_node = origin.username; - jid_host = origin.host; - jid_resource = origin.resource; - end - - if proxy_acl and #proxy_acl > 0 then - if host ~= nil then -- at least a domain is needed. - for _, acl in ipairs(proxy_acl) do - local acl_node, acl_host, acl_resource = jid_split(acl); - if ((acl_node ~= nil and acl_node == jid_node) or acl_node == nil) and - ((acl_host ~= nil and acl_host == jid_host) or acl_host == nil) and - ((acl_resource ~= nil and acl_resource == jid_resource) or acl_resource == nil) then - allow = true; - end - end - end - else - allow = true; - end - if allow == true then - if reply == nil then - reply = st.iq({type="result", from=host}) - :query("http://jabber.org/protocol/bytestreams") - :tag("streamhost", {jid=host, host=proxy_address, port=proxy_port}); - replies_cache.stream_host = reply; - end - else - module:log("warn", "Denying use of proxy for %s", tostring(_jid_join(jid_node, jid_host, jid_resource))); - if err_reply == nil then - err_reply = st.iq({type="error", from=host}) - :query("http://jabber.org/protocol/bytestreams") - :tag("error", {code='403', type='auth'}) - :tag("forbidden", {xmlns='urn:ietf:params:xml:ns:xmpp-stanzas'}); - replies_cache.stream_host_err = err_reply; - end - reply = err_reply; - end - reply.attr.id = stanza.attr.id; - reply.attr.to = stanza.attr.from; - reply.tags[1].attr.sid = sid; - return reply; -end - -module.unload = function() - componentmanager.deregister_component(host); - connlisteners.deregister(module.host .. ':proxy65'); -end - -local function set_activation(stanza) - local from, to, sid, reply = nil; - from = stanza.attr.from; - if stanza.tags[1] ~= nil and tostring(stanza.tags[1].name) == "query" then - if stanza.tags[1].attr ~= nil then - sid = stanza.tags[1].attr.sid; - end - if stanza.tags[1].tags[1] ~= nil and tostring(stanza.tags[1].tags[1].name) == "activate" then - to = stanza.tags[1].tags[1][1]; - end - end - if from ~= nil and to ~= nil and sid ~= nil then - reply = st.iq({type="result", from=host, to=from}); - reply.attr.id = stanza.attr.id; - end - return reply, from, to, sid; -end - -function handle_to_domain(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" then - origin.send(get_stream_host(origin, stanza)); - return true; - end - elseif stanza.name == "iq" and type == "set" then - local reply, from, to, sid = set_activation(stanza); - if reply ~= nil and from ~= nil and to ~= nil and sid ~= nil then - local sha = sha1(sid .. from .. to, true); - if transfers[sha] == nil then - module:log("warn", "Recieved request to activate transfer with no participants"); - module:log("debug", "The sha1 of the transfer which should be activated was: %s", sha); - elseif(transfers[sha] ~= nil and transfers[sha].initiator ~= nil and transfers[sha].target ~= nil) then - origin.send(reply); - transfers[sha].activated = true; - end - else - module:log("error", "activation failed: sid: %s, initiator: %s, target: %s", tostring(sid), tostring(from), tostring(to)); - end - end - end - return; -end - -if not connlisteners.register(module.host .. ':proxy65', connlistener) then - error("mod_proxy65: Could not establish a connection listener. Check your configuration please."); - error(" one possible cause for this would be that two proxy65 components share the same port."); -end - -connlisteners.start(module.host .. ':proxy65'); -component = componentmanager.register_component(host, handle_to_domain);