author | Matthew Wild <mwild1@gmail.com> |
Fri, 24 Oct 2008 18:14:40 +0100 | |
changeset 164 | 8dc1faa5b1df |
parent 162 | b1099bdd2724 |
child 167 | c51246bc679d |
permissions | -rw-r--r-- |
148 | 1 |
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local hosts = hosts; |
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local sessions = sessions; |
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local socket = require "socket"; |
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local format = string.format; |
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local tostring, pairs, ipairs, getmetatable, print, newproxy, error, tonumber |
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= tostring, pairs, ipairs, getmetatable, print, newproxy, error, tonumber; |
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local connlisteners_get = require "net.connlisteners".get; |
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local wraptlsclient = require "net.server".wraptlsclient; |
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local modulemanager = require "core.modulemanager"; |
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local uuid_gen = require "util.uuid".generate; |
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local logger_init = require "util.logger".init; |
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local log = logger_init("s2smanager"); |
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local md5_hash = require "util.hashes".md5; |
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local dialback_secret = "This is very secret!!! Ha!"; |
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Hack until we get SRV resolving
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parents:
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local srvmap = { ["gmail.com"] = "talk.google.com", ["identi.ca"] = "longlance.controlezvous.ca" }; |
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parents:
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148 | 25 |
module "s2smanager" |
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function connect_host(from_host, to_host) |
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end |
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function send_to_host(from_host, to_host, data) |
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if hosts[to_host] then |
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-- Write to connection |
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hosts[to_host].send(data); |
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log("debug", "stanza sent over s2s"); |
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else |
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log("debug", "opening a new outgoing connection for this stanza"); |
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local host_session = new_outgoing(from_host, to_host); |
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-- Store in buffer |
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host_session.sendq = { data }; |
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end |
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end |
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function disconnect_host(host) |
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end |
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local open_sessions = 0; |
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function new_incoming(conn) |
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local session = { conn = conn, priority = 0, type = "s2sin_unauthed", direction = "incoming" }; |
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if true then |
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session.trace = newproxy(true); |
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getmetatable(session.trace).__gc = function () open_sessions = open_sessions - 1; print("s2s session got collected, now "..open_sessions.." s2s sessions are allocated") end; |
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end |
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open_sessions = open_sessions + 1; |
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local w = conn.write; |
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session.send = function (t) w(tostring(t)); end |
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return session; |
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end |
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function new_outgoing(from_host, to_host) |
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local host_session = { to_host = to_host, from_host = from_host, notopen = true, type = "s2sout_unauthed", direction = "outgoing" }; |
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hosts[to_host] = host_session; |
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local cl = connlisteners_get("xmppserver"); |
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local conn, handler = socket.tcp() |
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--FIXME: Below parameters (ports/ip) are incorrect (use SRV) |
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157
f4e9b6ec34b0
Hack until we get SRV resolving
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parents:
148
diff
changeset
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to_host = srvmap[to_host] or to_host; |
148 | 70 |
conn:connect(to_host, 5269); |
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conn = wraptlsclient(cl, conn, to_host, 5269, 0, 1, hosts[from_host].ssl_ctx ); |
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host_session.conn = conn; |
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-- Register this outgoing connection so that xmppserver_listener knows about it |
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-- otherwise it will assume it is a new incoming connection |
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cl.register_outgoing(conn, host_session); |
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do |
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local conn_name = "s2sout"..tostring(conn):match("[a-f0-9]*$"); |
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host_session.log = logger_init(conn_name); |
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end |
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local w = conn.write; |
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host_session.send = function (t) w(tostring(t)); end |
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conn.write(format([[<stream:stream xmlns='jabber:server' xmlns:db='jabber:server:dialback' xmlns:stream='http://etherx.jabber.org/streams' from='%s' to='%s' version='1.0'>]], from_host, to_host)); |
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return host_session; |
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end |
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function streamopened(session, attr) |
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session.log("debug", "s2s stream opened"); |
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local send = session.send; |
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session.version = tonumber(attr.version) or 0; |
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if session.version >= 1.0 and not (attr.to and attr.from) then |
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print("to: "..tostring(attr.to).." from: "..tostring(attr.from)); |
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--error(session.to_host.." failed to specify 'to' or 'from' hostname as per RFC"); |
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log("warn", (session.to_host or "(unknown)").." failed to specify 'to' or 'from' hostname as per RFC"); |
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end |
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if session.direction == "incoming" then |
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-- Send a reply stream header |
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for k,v in pairs(attr) do print("", tostring(k), ":::", tostring(v)); end |
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session.to_host = attr.to; |
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session.from_host = attr.from; |
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session.streamid = uuid_gen(); |
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print(session, session.from_host, "incoming s2s stream opened"); |
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send("<?xml version='1.0'?>"); |
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send(format("<stream:stream xmlns='jabber:server' xmlns:db='jabber:server:dialback' xmlns:stream='http://etherx.jabber.org/streams' id='%s' from='%s'>", session.streamid, session.to_host)); |
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if session.from_host then |
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-- Need to perform dialback to check identity |
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print("to: "..tostring(attr.to).." from: "..tostring(attr.from)); |
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print("Need to do dialback here you know!!"); |
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end |
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elseif session.direction == "outgoing" then |
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-- If we are just using the connection for verifying dialback keys, we won't try and auth it |
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if not session.dialback_verifying then |
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-- generate dialback key |
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if not attr.id then error("stream response did not give us a streamid!!!"); end |
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session.streamid = attr.id; |
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session.dialback_key = generate_dialback(session.streamid, session.to_host, session.from_host); |
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session.send(format("<db:result from='%s' to='%s'>%s</db:result>", session.from_host, session.to_host, session.dialback_key)); |
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session.log("info", "sent dialback key on outgoing s2s stream"); |
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else |
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mark_connected(session); |
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end |
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end |
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--[[ |
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local features = {}; |
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modulemanager.fire_event("stream-features-s2s", session, features); |
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send("<stream:features>"); |
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for _, feature in ipairs(features) do |
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send(tostring(feature)); |
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end |
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send("</stream:features>");]] |
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log("info", "s2s stream opened successfully"); |
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session.notopen = nil; |
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end |
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function generate_dialback(id, to, from) |
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return md5_hash(id..to..from..dialback_secret); -- FIXME: See XEP-185 and XEP-220 |
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end |
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function verify_dialback(id, to, from, key) |
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return key == generate_dialback(id, to, from); |
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end |
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function make_authenticated(session) |
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if session.type == "s2sout_unauthed" then |
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session.type = "s2sout"; |
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elseif session.type == "s2sin_unauthed" then |
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session.type = "s2sin"; |
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else |
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return false; |
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end |
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session.log("info", "connection is now authenticated"); |
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mark_connected(session); |
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return true; |
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end |
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function mark_connected(session) |
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local sendq, send = session.sendq, session.send; |
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if sendq then |
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session.log("debug", "sending queued stanzas across new connection"); |
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8c1a8a3e32e8
Destroy s2s sendqueue when connection is established successfully and data written
Matthew Wild <mwild1@gmail.com>
parents:
157
diff
changeset
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for i, data in ipairs(sendq) do |
148 | 175 |
send(data); |
161
8c1a8a3e32e8
Destroy s2s sendqueue when connection is established successfully and data written
Matthew Wild <mwild1@gmail.com>
parents:
157
diff
changeset
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sendq[i] = nil; |
148 | 177 |
end |
161
8c1a8a3e32e8
Destroy s2s sendqueue when connection is established successfully and data written
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parents:
157
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session.sendq = nil; |
148 | 179 |
end |
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end |
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function destroy_session(session) |
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(session.log or log)("info", "Destroying session"); |
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if session.direction == "outgoing" then |
8dc1faa5b1df
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hosts[session.to_host] = nil; |
8dc1faa5b1df
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end |
8dc1faa5b1df
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session.conn = nil; |
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session.disconnect = nil; |
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for k in pairs(session) do |
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if k ~= "trace" then |
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session[k] = nil; |
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end |
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end |
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end |
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148 | 196 |
return _M; |