Mercurial > lxmppd-hg-xmllex / file comparison
comparison: core/s2smanager.lua
core/s2smanager.lua
- branch
- s2s
- changeset 148
- 4c0dcd245d34
- child 157
- f4e9b6ec34b0
equal
deleted
inserted
replaced
| 147:ccebb2720741 | 148:4c0dcd245d34 |
|---|---|
| 1 | |
| 2 local hosts = hosts; | |
| 3 local sessions = sessions; | |
| 4 local socket = require "socket"; | |
| 5 local format = string.format; | |
| 6 local tostring, pairs, ipairs, getmetatable, print, newproxy, error, tonumber | |
| 7 = tostring, pairs, ipairs, getmetatable, print, newproxy, error, tonumber; | |
| 8 | |
| 9 local connlisteners_get = require "net.connlisteners".get; | |
| 10 local wraptlsclient = require "net.server".wraptlsclient; | |
| 11 local modulemanager = require "core.modulemanager"; | |
| 12 | |
| 13 local uuid_gen = require "util.uuid".generate; | |
| 14 | |
| 15 local logger_init = require "util.logger".init; | |
| 16 | |
| 17 local log = logger_init("s2smanager"); | |
| 18 | |
| 19 local md5_hash = require "util.hashes".md5; | |
| 20 | |
| 21 local dialback_secret = "This is very secret!!! Ha!"; | |
| 22 | |
| 23 module "s2smanager" | |
| 24 | |
| 25 function connect_host(from_host, to_host) | |
| 26 end | |
| 27 | |
| 28 function send_to_host(from_host, to_host, data) | |
| 29 if hosts[to_host] then | |
| 30 -- Write to connection | |
| 31 hosts[to_host].send(data); | |
| 32 log("debug", "stanza sent over s2s"); | |
| 33 else | |
| 34 log("debug", "opening a new outgoing connection for this stanza"); | |
| 35 local host_session = new_outgoing(from_host, to_host); | |
| 36 -- Store in buffer | |
| 37 host_session.sendq = { data }; | |
| 38 end | |
| 39 end | |
| 40 | |
| 41 function disconnect_host(host) | |
| 42 | |
| 43 end | |
| 44 | |
| 45 local open_sessions = 0; | |
| 46 | |
| 47 function new_incoming(conn) | |
| 48 local session = { conn = conn, priority = 0, type = "s2sin_unauthed", direction = "incoming" }; | |
| 49 if true then | |
| 50 session.trace = newproxy(true); | |
| 51 getmetatable(session.trace).__gc = function () open_sessions = open_sessions - 1; print("s2s session got collected, now "..open_sessions.." s2s sessions are allocated") end; | |
| 52 end | |
| 53 open_sessions = open_sessions + 1; | |
| 54 local w = conn.write; | |
| 55 session.send = function (t) w(tostring(t)); end | |
| 56 return session; | |
| 57 end | |
| 58 | |
| 59 function new_outgoing(from_host, to_host) | |
| 60 local host_session = { to_host = to_host, from_host = from_host, notopen = true, type = "s2sout_unauthed", direction = "outgoing" }; | |
| 61 hosts[to_host] = host_session; | |
| 62 | |
| 63 local cl = connlisteners_get("xmppserver"); | |
| 64 | |
| 65 local conn, handler = socket.tcp() | |
| 66 --FIXME: Below parameters (ports/ip) are incorrect (use SRV) | |
| 67 conn:connect(to_host, 5269); | |
| 68 conn = wraptlsclient(cl, conn, to_host, 5269, 0, 1, hosts[from_host].ssl_ctx ); | |
| 69 host_session.conn = conn; | |
| 70 | |
| 71 -- Register this outgoing connection so that xmppserver_listener knows about it | |
| 72 -- otherwise it will assume it is a new incoming connection | |
| 73 cl.register_outgoing(conn, host_session); | |
| 74 | |
| 75 do | |
| 76 local conn_name = "s2sout"..tostring(conn):match("[a-f0-9]*$"); | |
| 77 host_session.log = logger_init(conn_name); | |
| 78 end | |
| 79 | |
| 80 local w = conn.write; | |
| 81 host_session.send = function (t) w(tostring(t)); end | |
| 82 | |
| 83 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)); | |
| 84 | |
| 85 return host_session; | |
| 86 end | |
| 87 | |
| 88 function streamopened(session, attr) | |
| 89 session.log("debug", "s2s stream opened"); | |
| 90 local send = session.send; | |
| 91 | |
| 92 session.version = tonumber(attr.version) or 0; | |
| 93 if session.version >= 1.0 and not (attr.to and attr.from) then | |
| 94 print("to: "..tostring(attr.to).." from: "..tostring(attr.from)); | |
| 95 --error(session.to_host.." failed to specify 'to' or 'from' hostname as per RFC"); | |
| 96 log("warn", (session.to_host or "(unknown)").." failed to specify 'to' or 'from' hostname as per RFC"); | |
| 97 end | |
| 98 | |
| 99 if session.direction == "incoming" then | |
| 100 -- Send a reply stream header | |
| 101 | |
| 102 for k,v in pairs(attr) do print("", tostring(k), ":::", tostring(v)); end | |
| 103 | |
| 104 session.to_host = attr.to; | |
| 105 session.from_host = attr.from; | |
| 106 | |
| 107 session.streamid = uuid_gen(); | |
| 108 print(session, session.from_host, "incoming s2s stream opened"); | |
| 109 send("<?xml version='1.0'?>"); | |
| 110 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)); | |
| 111 if session.from_host then | |
| 112 -- Need to perform dialback to check identity | |
| 113 print("to: "..tostring(attr.to).." from: "..tostring(attr.from)); | |
| 114 print("Need to do dialback here you know!!"); | |
| 115 end | |
| 116 elseif session.direction == "outgoing" then | |
| 117 -- If we are just using the connection for verifying dialback keys, we won't try and auth it | |
| 118 if not session.dialback_verifying then | |
| 119 -- generate dialback key | |
| 120 if not attr.id then error("stream response did not give us a streamid!!!"); end | |
| 121 session.streamid = attr.id; | |
| 122 session.dialback_key = generate_dialback(session.streamid, session.to_host, session.from_host); | |
| 123 session.send(format("<db:result from='%s' to='%s'>%s</db:result>", session.from_host, session.to_host, session.dialback_key)); | |
| 124 session.log("info", "sent dialback key on outgoing s2s stream"); | |
| 125 else | |
| 126 mark_connected(session); | |
| 127 end | |
| 128 end | |
| 129 --[[ | |
| 130 local features = {}; | |
| 131 modulemanager.fire_event("stream-features-s2s", session, features); | |
| 132 | |
| 133 send("<stream:features>"); | |
| 134 | |
| 135 for _, feature in ipairs(features) do | |
| 136 send(tostring(feature)); | |
| 137 end | |
| 138 | |
| 139 send("</stream:features>");]] | |
| 140 log("info", "s2s stream opened successfully"); | |
| 141 session.notopen = nil; | |
| 142 end | |
| 143 | |
| 144 function generate_dialback(id, to, from) | |
| 145 return md5_hash(id..to..from..dialback_secret); -- FIXME: See XEP-185 and XEP-220 | |
| 146 end | |
| 147 | |
| 148 function verify_dialback(id, to, from, key) | |
| 149 return key == generate_dialback(id, to, from); | |
| 150 end | |
| 151 | |
| 152 function make_authenticated(session) | |
| 153 if session.type == "s2sout_unauthed" then | |
| 154 session.type = "s2sout"; | |
| 155 elseif session.type == "s2sin_unauthed" then | |
| 156 session.type = "s2sin"; | |
| 157 else | |
| 158 return false; | |
| 159 end | |
| 160 session.log("info", "connection is now authenticated"); | |
| 161 | |
| 162 mark_connected(session); | |
| 163 | |
| 164 return true; | |
| 165 end | |
| 166 | |
| 167 function mark_connected(session) | |
| 168 local sendq, send = session.sendq, session.send; | |
| 169 if sendq then | |
| 170 session.log("debug", "sending queued stanzas across new connection"); | |
| 171 for _, data in ipairs(sendq) do | |
| 172 session.log("debug", "sending: %s", tostring(data)); | |
| 173 send(data); | |
| 174 end | |
| 175 end | |
| 176 end | |
| 177 | |
| 178 return _M; |
