main.lua

   1 require "luarocks.require"
   2
   3 server = require "server"
   4 require "socket"
   5 require "ssl"
   6 require "lxp"
   7
   8 function log(type, area, message)
   9         print(type, area, message);
  10 end
  11
  12 require "core.stanza_dispatch"
  13 init_xmlhandlers = require "core.xmlhandlers"
  14 require "core.rostermanager"
  15 require "core.offlinemessage"
  16 require "core.usermanager"
  17 require "util.stanza"
  18 require "util.jid"
  19
  20 -- Locals for faster access --
  21 local t_insert = table.insert;
  22 local t_concat = table.concat;
  23 local t_concatall = function (t, sep) local tt = {}; for _, s in ipairs(t) do t_insert(tt, tostring(s)); end return t_concat(tt, sep); end
  24 local m_random = math.random;
  25 local format = string.format;
  26 local st = stanza;
  27 ------------------------------
  28
  29 sessions = {};
  30 hosts =         {
  31                         ["localhost"] =         {
  32                                                         type = "local";
  33                                                         connected = true;
  34                                                         sessions = {};
  35                                                 };
  36                         ["getjabber.ath.cx"] =  {
  37                                                         type = "local";
  38                                                         connected = true;
  39                                                         sessions = {};
  40                                                 };
  41                 }
  42
  43 local hosts, users = hosts, users;
  44
  45 --local ssl_ctx, msg = ssl.newcontext { mode = "server", protocol = "sslv23", key = "/home/matthew/ssl_cert/server.key",
  46 --    certificate = "/home/matthew/ssl_cert/server.crt", capath = "/etc/ssl/certs", verify = "none", }
  47 --
  48 --if not ssl_ctx then error("Failed to initialise SSL/TLS support: "..tostring(msg)); end
  49
  50
  51 local ssl_ctx = { mode = "server", protocol = "sslv23", key = "/home/matthew/ssl_cert/server.key",
  52     certificate = "/home/matthew/ssl_cert/server.crt", capath = "/etc/ssl/certs", verify = "none", }
  53
  54
  55 function connect_host(host)
  56         hosts[host] = { type = "remote", sendbuffer = {} };
  57 end
  58
  59 local function send_to(session, to, stanza)
  60         local node, host, resource = jid.split(to);
  61         if not hosts[host] then
  62                 -- s2s
  63         elseif hosts[host].type == "local" then
  64                 print("   ...is to a local user")
  65                 local destuser = hosts[host].sessions[node];
  66                 if destuser and destuser.sessions then
  67                         if not destuser.sessions[resource] then
  68                                 local best_session;
  69                                 for resource, session in pairs(destuser.sessions) do
  70                                         if not best_session then best_session = session;
  71                                         elseif session.priority >= best_session.priority and session.priority >= 0 then
  72                                                 best_session = session;
  73                                         end
  74                                 end
  75                                 if not best_session then
  76                                         offlinemessage.new(node, host, stanza);
  77                                 else
  78                                         print("resource '"..resource.."' was not online, have chosen to send to '"..best_session.username.."@"..best_session.host.."/"..best_session.resource.."'");
  79                                         resource = best_session.resource;
  80                                 end
  81                         end
  82                         if destuser.sessions[resource] == session then
  83                                 log("warn", "core", "Attempt to send stanza to self, dropping...");
  84                         else
  85                                 print("...sending...", tostring(stanza));
  86                                 --destuser.sessions[resource].conn.write(tostring(data));
  87                                 print("   to conn ", destuser.sessions[resource].conn);
  88                                 destuser.sessions[resource].conn.write(tostring(stanza));
  89                                 print("...sent")
  90                         end
  91                 elseif stanza.name == "message" then
  92                         print("   ...will be stored offline");
  93                         offlinemessage.new(node, host, stanza);
  94                 elseif stanza.name == "iq" then
  95                         print("   ...is an iq");
  96                         session.send(st.reply(stanza)
  97                                 :tag("error", { type = "cancel" })
  98                                         :tag("service-unavailable", { xmlns = "urn:ietf:params:xml:ns:xmpp-stanzas" }));
  99                 end
 100                 print("   ...done routing");
 101         end
 102 end
 103
 104 function handler(conn, data, err)
 105         local session = sessions[conn];
 106
 107         if not session then
 108                 sessions[conn] = { conn = conn, notopen = true, priority = 0 };
 109                 session = sessions[conn];
 110
 111                 -- Logging functions --
 112
 113                 local mainlog, log = log;
 114                 do
 115                         local conn_name = tostring(conn):match("%w+$");
 116                         log = function (type, area, message) mainlog(type, conn_name, message); end
 117                 end
 118                 local print = function (...) log("info", "core", t_concatall({...}, "\t")); end
 119                 session.log = log;
 120
 121                 --      --      --
 122
 123                 -- Send buffers --
 124
 125                 local send = function (data) print("Sending...", tostring(data)); conn.write(tostring(data)); end;
 126                 session.send, session.send_to = send, send_to;
 127
 128                         print("Client connected");
 129
 130                         session.stanza_dispatch = init_stanza_dispatcher(session);
 131                         session.xml_handlers = init_xmlhandlers(session);
 132                         session.parser = lxp.new(session.xml_handlers, ":");
 133
 134                         function session.disconnect(err)
 135                                 print("Disconnected: "..err);
 136                         end
 137                 end
 138         if data then
 139                 session.parser:parse(data);
 140         end
 141
 142         --log("info", "core", "Client disconnected, connection closed");
 143 end
 144
 145 function disconnect(conn, err)
 146         sessions[conn].disconnect(err);
 147 end
 148
 149 print("ssl_ctx:", type(ssl_ctx));
 150
 151 setmetatable(_G, { __index = function (t, k) print("WARNING: ATTEMPT TO READ A NIL GLOBAL!!!", k); error("Attempt to read a non-existent global. Naughty boy.", 2); end, __newindex = function (t, k, v) print("ATTEMPT TO SET A GLOBAL!!!!", tostring(k).." = "..tostring(v)); error("Attempt to set a global. Naughty boy.", 2); end }) --]][][[]][];
 152
 153
 154 local protected_handler = function (...) local success, ret = pcall(handler, ...); if not success then print("ERROR on "..tostring((select(1, ...)))..": "..ret); end end;
 155
 156 print( server.add( { listener = protected_handler, disconnect = disconnect }, 5222, "*", 1, nil ) )    -- server.add will send a status message
 157 print( server.add( { listener = protected_handler, disconnect = disconnect }, 5223, "*", 1, ssl_ctx ) )    -- server.add will send a status message
 158
 159 server.loop();