---[[\r
-\r
- server.lua by blastbeat of the luadch project\r
- \r
- re-used here under the MIT/X Consortium License\r
-\r
- - this script contains the server loop of the program\r
- - other scripts can reg a server here\r
-\r
-]]--\r
-\r
-----------------------------------// DECLARATION //--\r
-\r
---// constants //--\r
-\r
-local STAT_UNIT = 1 / ( 1024 * 1024 ) -- mb\r
-\r
---// lua functions //--\r
-\r
-local function use( what ) return _G[ what ] end\r
-\r
-local type = use "type"\r
-local pairs = use "pairs"\r
-local ipairs = use "ipairs"\r
-local tostring = use "tostring"\r
-local collectgarbage = use "collectgarbage"\r
-\r
---// lua libs //--\r
-\r
-local table = use "table"\r
-local coroutine = use "coroutine"\r
-\r
---// lua lib methods //--\r
-\r
-local table_concat = table.concat\r
-local table_remove = table.remove\r
-local string_sub = use'string'.sub\r
-local coroutine_wrap = coroutine.wrap\r
-local coroutine_yield = coroutine.yield\r
-local print = print;\r
-local out_put = function () end --print;\r
-local out_error = print;\r
-\r
---// extern libs //--\r
-\r
-local luasec = require "ssl"\r
-local luasocket = require "socket"\r
-\r
---// extern lib methods //--\r
-\r
-local ssl_wrap = ( luasec and luasec.wrap )\r
-local socket_bind = luasocket.bind\r
-local socket_select = luasocket.select\r
-local ssl_newcontext = ( luasec and luasec.newcontext )\r
-\r
---// functions //--\r
-\r
-local loop\r
-local stats\r
-local addtimer\r
-local closeall\r
-local addserver\r
-local firetimer\r
-local closesocket\r
-local removesocket\r
-local wrapserver\r
-local wraptcpclient\r
-local wrapsslclient\r
-\r
---// tables //--\r
-\r
-local listener\r
-local readlist\r
-local writelist\r
-local socketlist\r
-local timelistener\r
-\r
---// simple data types //--\r
-\r
-local _\r
-local readlen = 0 -- length of readlist\r
-local writelen = 0 -- lenght of writelist\r
-\r
-local sendstat= 0\r
-local receivestat = 0\r
-\r
-----------------------------------// DEFINITION //--\r
-\r
-listener = { } -- key = port, value = table\r
-readlist = { } -- array with sockets to read from\r
-writelist = { } -- arrary with sockets to write to\r
-socketlist = { } -- key = socket, value = wrapped socket\r
-timelistener = { }\r
-\r
-stats = function( )\r
- return receivestat, sendstat\r
-end\r
-\r
-wrapserver = function( listener, socket, ip, serverport, mode, sslctx ) -- this function wraps a server\r
-\r
- local dispatch, disconnect = listener.listener, listener.disconnect -- dangerous\r
-\r
- local wrapclient, err\r
-\r
- if sslctx then\r
- if not ssl_newcontext then\r
- return nil, "luasec not found"\r
--- elseif not cfg_get "use_ssl" then\r
--- return nil, "ssl is deactivated"\r
- end\r
- if type( sslctx ) ~= "table" then\r
- out_error "server.lua: wrong server sslctx"\r
- return nil, "wrong server sslctx"\r
- end\r
- sslctx, err = ssl_newcontext( sslctx )\r
- if not sslctx then\r
- err = err or "wrong sslctx parameters"\r
- out_error( "server.lua: ", err )\r
- return nil, err\r
- end\r
- wrapclient = wrapsslclient\r
- else\r
- wrapclient = wraptcpclient\r
- end\r
-\r
- local accept = socket.accept\r
- local close = socket.close\r
-\r
- --// public methods of the object //-- \r
-\r
- local handler = { }\r
-\r
- handler.shutdown = function( ) end\r
-\r
- --[[handler.listener = function( data, err )\r
- return ondata( handler, data, err )\r
- end]]\r
- handler.ssl = function( )\r
- return sslctx and true or false\r
- end\r
- handler.close = function( closed )\r
- _ = not closed and close( socket )\r
- writelen = removesocket( writelist, socket, writelen )\r
- readlen = removesocket( readlist, socket, readlen )\r
- socketlist[ socket ] = nil\r
- handler = nil\r
- end\r
- handler.ip = function( )\r
- return ip\r
- end\r
- handler.serverport = function( )\r
- return serverport\r
- end\r
- handler.socket = function( )\r
- return socket\r
- end\r
- handler.receivedata = function( )\r
- local client, err = accept( socket ) -- try to accept\r
- if client then\r
- local ip, clientport = client:getpeername( )\r
- client:settimeout( 0 )\r
- local handler, client, err = wrapclient( listener, client, ip, serverport, clientport, mode, sslctx ) -- wrap new client socket\r
- if err then -- error while wrapping ssl socket\r
- return false\r
- end\r
- out_put( "server.lua: accepted new client connection from ", ip, ":", clientport )\r
- return dispatch( handler )\r
- elseif err then -- maybe timeout or something else\r
- out_put( "server.lua: error with new client connection: ", err )\r
- return false\r
- end\r
- end\r
- return handler\r
-end\r
-\r
-wrapsslclient = function( listener, socket, ip, serverport, clientport, mode, sslctx ) -- this function wraps a ssl cleint\r
-\r
- local dispatch, disconnect = listener.listener, listener.disconnect\r
-\r
- --// transform socket to ssl object //--\r
-\r
- local err\r
- socket, err = ssl_wrap( socket, sslctx ) -- wrap socket\r
- if err then\r
- out_put( "server.lua: ssl error: ", err )\r
- return nil, nil, err -- fatal error\r
- end\r
- socket:settimeout( 0 )\r
-\r
- --// private closures of the object //--\r
-\r
- local writequeue = { } -- buffer for messages to send\r
-\r
- local eol -- end of buffer\r
-\r
- local sstat, rstat = 0, 0\r
-\r
- --// local import of socket methods //--\r
-\r
- local send = socket.send\r
- local receive = socket.receive\r
- local close = socket.close\r
- --local shutdown = socket.shutdown\r
-\r
- --// public methods of the object //--\r
-\r
- local handler = { }\r
-\r
- handler.getstats = function( )\r
- return rstat, sstat\r
- end\r
-\r
- handler.listener = function( data, err )\r
- return listener( handler, data, err )\r
- end\r
- handler.ssl = function( )\r
- return true\r
- end\r
- handler.send = function( _, data, i, j )\r
- return send( socket, data, i, j )\r
- end\r
- handler.receive = function( pattern, prefix )\r
- return receive( socket, pattern, prefix )\r
- end\r
- handler.shutdown = function( pattern )\r
- --return shutdown( socket, pattern )\r
- end\r
- handler.close = function( closed )\r
- close( socket )\r
- writelen = ( eol and removesocket( writelist, socket, writelen ) ) or writelen\r
- readlen = removesocket( readlist, socket, readlen )\r
- socketlist[ socket ] = nil\r
- out_put "server.lua: closed handler and removed socket from list"\r
- end\r
- handler.ip = function( )\r
- return ip\r
- end\r
- handler.serverport = function( )\r
- return serverport\r
- end\r
- handler.clientport = function( ) \r
- return clientport\r
- end\r
-\r
- handler.write = function( data )\r
- if not eol then\r
- writelen = writelen + 1\r
- writelist[ writelen ] = socket\r
- eol = 0\r
- end\r
- eol = eol + 1\r
- writequeue[ eol ] = data\r
- end\r
- handler.writequeue = function( )\r
- return writequeue\r
- end\r
- handler.socket = function( )\r
- return socket\r
- end\r
- handler.mode = function( )\r
- return mode\r
- end\r
- handler._receivedata = function( )\r
- local data, err, part = receive( socket, mode ) -- receive data in "mode"\r
- if not err or ( err == "timeout" or err == "wantread" ) then -- received something\r
- local data = data or part or ""\r
- local count = #data * STAT_UNIT\r
- rstat = rstat + count\r
- receivestat = receivestat + count\r
- out_put( "server.lua: read data '", data, "', error: ", err )\r
- return dispatch( handler, data, err )\r
- else -- connections was closed or fatal error\r
- out_put( "server.lua: client ", ip, ":", clientport, " error: ", err )\r
- handler.close( )\r
- disconnect( handler, err )\r
- writequeue = nil\r
- handler = nil\r
- return false\r
- end\r
- end\r
- handler._dispatchdata = function( ) -- this function writes data to handlers\r
- local buffer = table_concat( writequeue, "", 1, eol )\r
- local succ, err, byte = send( socket, buffer )\r
- local count = ( succ or 0 ) * STAT_UNIT\r
- sstat = sstat + count\r
- sendstat = sendstat + count\r
- out_put( "server.lua: sended '", buffer, "', bytes: ", succ, ", error: ", err, ", part: ", byte, ", to: ", ip, ":", clientport )\r
- if succ then -- sending succesful\r
- --writequeue = { }\r
- eol = nil\r
- writelen = removesocket( writelist, socket, writelen ) -- delete socket from writelist\r
- return true\r
- elseif byte and ( err == "timeout" or err == "wantwrite" ) then -- want write\r
- buffer = string_sub( buffer, byte + 1, -1 ) -- new buffer\r
- writequeue[ 1 ] = buffer -- insert new buffer in queue\r
- eol = 1\r
- return true\r
- else -- connection was closed during sending or fatal error\r
- out_put( "server.lua: client ", ip, ":", clientport, " error: ", err )\r
- handler.close( )\r
- disconnect( handler, err )\r
- writequeue = nil\r
- handler = nil\r
- return false\r
- end\r
- end\r
-\r
- -- // COMPAT // --\r
-\r
- handler.getIp = handler.ip\r
- handler.getPort = handler.clientport\r
-\r
- --// handshake //--\r
-\r
- local wrote\r
-\r
- handler.handshake = coroutine_wrap( function( client )\r
- local err\r
- for i = 1, 10 do -- 10 handshake attemps\r
- _, err = client:dohandshake( )\r
- if not err then\r
- out_put( "server.lua: ssl handshake done" )\r
- writelen = ( wrote and removesocket( writelist, socket, writelen ) ) or writelen\r
- handler.receivedata = handler._receivedata -- when handshake is done, replace the handshake function with regular functions\r
- handler.dispatchdata = handler._dispatchdata\r
- return dispatch( handler )\r
- else\r
- out_put( "server.lua: error during ssl handshake: ", err )\r
- if err == "wantwrite" then\r
- if wrote == nil then\r
- writelen = writelen + 1\r
- writelist[ writelen ] = client\r
- wrote = true\r
- end\r
- end\r
- coroutine_yield( handler, nil, err ) -- handshake not finished\r
- end\r
- end\r
- _ = err ~= "closed" and close( socket )\r
- handler.close( )\r
- disconnect( handler, err )\r
- writequeue = nil\r
- handler = nil\r
- return false -- handshake failed\r
- end\r
- )\r
- handler.receivedata = handler.handshake\r
- handler.dispatchdata = handler.handshake\r
-\r
- handler.handshake( socket ) -- do handshake\r
-\r
- socketlist[ socket ] = handler\r
- readlen = readlen + 1\r
- readlist[ readlen ] = socket\r
-\r
- return handler, socket\r
-end\r
-\r
-wraptcpclient = function( listener, socket, ip, serverport, clientport, mode ) -- this function wraps a socket\r
-\r
- local dispatch, disconnect = listener.listener, listener.disconnect\r
-\r
- --// private closures of the object //--\r
-\r
- local writequeue = { } -- list for messages to send\r
-\r
- local eol\r
-\r
- local rstat, sstat = 0, 0\r
-\r
- --// local import of socket methods //--\r
-\r
- local send = socket.send\r
- local receive = socket.receive\r
- local close = socket.close\r
- local shutdown = socket.shutdown\r
-\r
- --// public methods of the object //--\r
-\r
- local handler = { }\r
-\r
- handler.getstats = function( )\r
- return rstat, sstat\r
- end\r
-\r
- handler.listener = function( data, err )\r
- return listener( handler, data, err )\r
- end\r
- handler.ssl = function( )\r
- return false\r
- end\r
- handler.send = function( _, data, i, j )\r
- return send( socket, data, i, j )\r
- end\r
- handler.receive = function( pattern, prefix )\r
- return receive( socket, pattern, prefix )\r
- end\r
- handler.shutdown = function( pattern )\r
- return shutdown( socket, pattern )\r
- end\r
- handler.close = function( closed )\r
- _ = not closed and shutdown( socket )\r
- _ = not closed and close( socket )\r
- writelen = ( eol and removesocket( writelist, socket, writelen ) ) or writelen\r
- readlen = removesocket( readlist, socket, readlen )\r
- socketlist[ socket ] = nil\r
- out_put "server.lua: closed handler and removed socket from list"\r
- end\r
- handler.ip = function( )\r
- return ip\r
- end\r
- handler.serverport = function( )\r
- return serverport\r
- end\r
- handler.clientport = function( ) \r
- return clientport\r
- end\r
- handler.write = function( data )\r
- if not eol then\r
- writelen = writelen + 1\r
- writelist[ writelen ] = socket\r
- eol = 0\r
- end\r
- eol = eol + 1\r
- writequeue[ eol ] = data\r
- end\r
- handler.writequeue = function( )\r
- return writequeue\r
- end\r
- handler.socket = function( )\r
- return socket\r
- end\r
- handler.mode = function( )\r
- return mode\r
- end\r
- handler.receivedata = function( )\r
- local data, err, part = receive( socket, mode ) -- receive data in "mode"\r
- if not err or ( err == "timeout" or err == "wantread" ) then -- received something\r
- local data = data or part or ""\r
- local count = #data * STAT_UNIT\r
- rstat = rstat + count\r
- receivestat = receivestat + count\r
- out_put( "server.lua: read data '", data, "', error: ", err )\r
- return dispatch( handler, data, err )\r
- else -- connections was closed or fatal error\r
- out_put( "server.lua: client ", ip, ":", clientport, " error: ", err )\r
- handler.close( )\r
- disconnect( handler, err )\r
- writequeue = nil\r
- handler = nil\r
- return false\r
- end\r
- end\r
- handler.dispatchdata = function( ) -- this function writes data to handlers\r
- local buffer = table_concat( writequeue, "", 1, eol )\r
- local succ, err, byte = send( socket, buffer )\r
- local count = ( succ or 0 ) * STAT_UNIT\r
- sstat = sstat + count\r
- sendstat = sendstat + count\r
- out_put( "server.lua: sended '", buffer, "', bytes: ", succ, ", error: ", err, ", part: ", byte, ", to: ", ip, ":", clientport )\r
- if succ then -- sending succesful\r
- --writequeue = { }\r
- eol = nil\r
- writelen = removesocket( writelist, socket, writelen ) -- delete socket from writelist\r
- return true\r
- elseif byte and ( err == "timeout" or err == "wantwrite" ) then -- want write\r
- buffer = string_sub( buffer, byte + 1, -1 ) -- new buffer\r
- writequeue[ 1 ] = buffer -- insert new buffer in queue\r
- eol = 1\r
- return true\r
- else -- connection was closed during sending or fatal error\r
- out_put( "server.lua: client ", ip, ":", clientport, " error: ", err )\r
- handler.close( )\r
- disconnect( handler, err )\r
- writequeue = nil\r
- handler = nil\r
- return false\r
- end\r
- end\r
-\r
- -- // COMPAT // --\r
-\r
- handler.getIp = handler.ip\r
- handler.getPort = handler.clientport\r
-\r
- socketlist[ socket ] = handler\r
- readlen = readlen + 1\r
- readlist[ readlen ] = socket\r
-\r
- return handler, socket\r
-end\r
-\r
-addtimer = function( listener )\r
- timelistener[ #timelistener + 1 ] = listener\r
-end\r
-\r
-firetimer = function( listener )\r
- for i, listener in ipairs( timelistener ) do\r
- listener( )\r
- end\r
-end\r
-\r
-addserver = function( listeners, port, addr, mode, sslctx ) -- this function provides a way for other scripts to reg a server\r
- local err\r
- if type( listeners ) ~= "table" then\r
- err = "invalid listener table"\r
- else\r
- for name, func in pairs( listeners ) do\r
- if type( func ) ~= "function" then\r
- err = "invalid listener function"\r
- break\r
- end\r
- end\r
- end\r
- if not type( port ) == "number" or not ( port >= 0 and port <= 65535 ) then\r
- err = "invalid port"\r
- elseif listener[ port ] then\r
- err= "listeners on port '" .. port .. "' already exist"\r
- elseif sslctx and not luasec then\r
- err = "luasec not found"\r
- end\r
- if err then\r
- out_error( "server.lua: ", err )\r
- return nil, err\r
- end\r
- addr = addr or "*"\r
- local server, err = socket_bind( addr, port )\r
- if err then\r
- out_error( "server.lua: ", err )\r
- return nil, err\r
- end\r
- local handler, err = wrapserver( listeners, server, addr, port, mode, sslctx ) -- wrap new server socket\r
- if not handler then\r
- server:close( )\r
- return nil, err\r
- end\r
- server:settimeout( 0 )\r
- readlen = readlen + 1\r
- readlist[ readlen ] = server\r
- listener[ port ] = listeners\r
- socketlist[ server ] = handler\r
- out_put( "server.lua: new server listener on ", addr, ":", port )\r
- return true\r
-end\r
-\r
-removesocket = function( tbl, socket, len ) -- this function removes sockets from a list\r
- for i, target in ipairs( tbl ) do\r
- if target == socket then\r
- len = len - 1\r
- table_remove( tbl, i )\r
- return len\r
- end\r
- end\r
- return len\r
-end\r
-\r
-closeall = function( )\r
- for sock, handler in pairs( socketlist ) do\r
- handler.shutdown( )\r
- handler.close( )\r
- socketlist[ sock ] = nil\r
- end\r
- writelist, readlist, socketlist = { }, { }, { }\r
-end\r
-\r
-closesocket = function( socket )\r
- writelen = removesocket( writelist, socket, writelen )\r
- readlen = removesocket( readlist, socket, readlen )\r
- socketlist[ socket ] = nil\r
- socket:close( )\r
-end\r
-\r
-loop = function( ) -- this is the main loop of the program\r
- --signal_set( "hub", "run" )\r
- repeat\r
- local read, write, err = socket_select( readlist, writelist, 1 ) -- 1 sec timeout, nice for timers\r
- for i, socket in ipairs( write ) do -- send data waiting in writequeues\r
- local handler = socketlist[ socket ]\r
- if handler then\r
- handler.dispatchdata( )\r
- else\r
- closesocket( socket )\r
- out_put "server.lua: found no handler and closed socket (writelist)" -- this should not happen\r
- end\r
- end\r
- for i, socket in ipairs( read ) do -- receive data\r
- local handler = socketlist[ socket ]\r
- if handler then\r
- handler.receivedata( )\r
- else\r
- closesocket( socket )\r
- out_put "server.lua: found no handler and closed socket (readlist)" -- this can happen\r
- end\r
- end\r
- firetimer( )\r
- --collectgarbage "collect"\r
- until false --signal_get "hub" ~= "run"\r
- return --signal_get "hub"\r
-end\r
-\r
-----------------------------------// BEGIN //--\r
-\r
-----------------------------------// PUBLIC INTERFACE //--\r
-\r
-return {\r
-\r
- add = addserver,\r
- loop = loop,\r
- stats = stats,\r
- closeall = closeall,\r
- addtimer = addtimer,\r
-\r
-}\r
+-- Prosody IM
+-- Copyright (C) 2008-2010 Matthew Wild
+-- Copyright (C) 2008-2010 Waqas Hussain
+--
+-- This project is MIT/X11 licensed. Please see the
+-- COPYING file in the source package for more information.
+--
+
+local use_luaevent = prosody and require "core.configmanager".get("*", "use_libevent");
+
+if use_luaevent then
+ use_luaevent = pcall(require, "luaevent.core");
+ if not use_luaevent then
+ log("error", "libevent not found, falling back to select()");
+ end
+end
+
+local server;
+
+if use_luaevent then
+ server = require "net.server_event";
+
+ -- Overwrite signal.signal() because we need to ask libevent to
+ -- handle them instead
+ local ok, signal = pcall(require, "util.signal");
+ if ok and signal then
+ local _signal_signal = signal.signal;
+ function signal.signal(signal_id, handler)
+ if type(signal_id) == "string" then
+ signal_id = signal[signal_id:upper()];
+ end
+ if type(signal_id) ~= "number" then
+ return false, "invalid-signal";
+ end
+ return server.hook_signal(signal_id, handler);
+ end
+ end
+else
+ use_luaevent = false;
+ server = require "net.server_select";
+end
+
+if prosody then
+ local config_get = require "core.configmanager".get;
+ local defaults = {};
+ for k,v in pairs(server.cfg or server.getsettings()) do
+ defaults[k] = v;
+ end
+ local function load_config()
+ local settings = config_get("*", "network_settings") or {};
+ if use_luaevent then
+ local event_settings = {
+ ACCEPT_DELAY = settings.event_accept_retry_interval;
+ ACCEPT_QUEUE = settings.tcp_backlog;
+ CLEAR_DELAY = settings.event_clear_interval;
+ CONNECT_TIMEOUT = settings.connect_timeout;
+ DEBUG = settings.debug;
+ HANDSHAKE_TIMEOUT = settings.ssl_handshake_timeout;
+ MAX_CONNECTIONS = settings.max_connections;
+ MAX_HANDSHAKE_ATTEMPTS = settings.max_ssl_handshake_roundtrips;
+ MAX_READ_LENGTH = settings.max_receive_buffer_size;
+ MAX_SEND_LENGTH = settings.max_send_buffer_size;
+ READ_TIMEOUT = settings.read_timeout;
+ WRITE_TIMEOUT = settings.send_timeout;
+ };
+
+ for k,default in pairs(defaults) do
+ server.cfg[k] = event_settings[k] or default;
+ end
+ else
+ local select_settings = {};
+ for k,default in pairs(defaults) do
+ select_settings[k] = settings[k] or default;
+ end
+ server.changesettings(select_settings);
+ end
+ end
+ load_config();
+ prosody.events.add_handler("config-reloaded", load_config);
+end
+
+-- require "net.server" shall now forever return this,
+-- ie. server_select or server_event as chosen above.
+return server;
projects / prosody.git / blobdiff