- -- \r
- -- server.lua by blastbeat of the luadch project\r
- -- Re-used here under the MIT/X Consortium License\r
- -- \r
- -- Modifications (C) 2008-2010 Matthew Wild, Waqas Hussain\r
- --\r
- \r
- -- // wrapping luadch stuff // --\r
- \r
- local use = function( what )\r
- return _G[ what ]\r
- end\r
- local clean = function( tbl )\r
- for i, k in pairs( tbl ) do\r
- tbl[ i ] = nil\r
- end\r
- end\r
- \r
- local log, table_concat = require ("util.logger").init("socket"), table.concat;\r
- local out_put = function (...) return log("debug", table_concat{...}); end\r
- local out_error = function (...) return log("warn", table_concat{...}); end\r
- local mem_free = collectgarbage\r
- \r
- ----------------------------------// DECLARATION //--\r
- \r
- --// constants //--\r
- \r
- local STAT_UNIT = 1 -- byte\r
- \r
- --// lua functions //--\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 os = use "os"\r
- local table = use "table"\r
- local string = use "string"\r
- local coroutine = use "coroutine"\r
- \r
- --// lua lib methods //--\r
- \r
- local os_time = os.time\r
- local os_difftime = os.difftime\r
- local table_concat = table.concat\r
- local table_remove = table.remove\r
- local string_len = string.len\r
- local string_sub = string.sub\r
- local coroutine_wrap = coroutine.wrap\r
- local coroutine_yield = coroutine.yield\r
- \r
- --// extern libs //--\r
- \r
- local luasec = select( 2, pcall( 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_sleep = luasocket.sleep\r
- local socket_select = luasocket.select\r
- local ssl_newcontext = ( luasec and luasec.newcontext )\r
- \r
- --// functions //--\r
- \r
- local id\r
- local loop\r
- local stats\r
- local idfalse\r
- local addtimer\r
- local closeall\r
- local addserver\r
- local getserver\r
- local wrapserver\r
- local getsettings\r
- local closesocket\r
- local removesocket\r
- local removeserver\r
- local changetimeout\r
- local wrapconnection\r
- local changesettings\r
- \r
- --// tables //--\r
- \r
- local _server\r
- local _readlist\r
- local _timerlist\r
- local _sendlist\r
- local _socketlist\r
- local _closelist\r
- local _readtimes\r
- local _writetimes\r
- \r
- --// simple data types //--\r
- \r
- local _\r
- local _readlistlen\r
- local _sendlistlen\r
- local _timerlistlen\r
- \r
- local _sendtraffic\r
- local _readtraffic\r
- \r
- local _selecttimeout\r
- local _sleeptime\r
- \r
- local _starttime\r
- local _currenttime\r
- \r
- local _maxsendlen\r
- local _maxreadlen\r
- \r
- local _checkinterval\r
- local _sendtimeout\r
- local _readtimeout\r
- \r
- local _cleanqueue\r
- \r
- local _timer\r
- \r
- local _maxclientsperserver\r
- \r
- ----------------------------------// DEFINITION //--\r
- \r
- _server = { } -- key = port, value = table; list of listening servers\r
- _readlist = { } -- array with sockets to read from\r
- _sendlist = { } -- arrary with sockets to write to\r
- _timerlist = { } -- array of timer functions\r
- _socketlist = { } -- key = socket, value = wrapped socket (handlers)\r
- _readtimes = { } -- key = handler, value = timestamp of last data reading\r
- _writetimes = { } -- key = handler, value = timestamp of last data writing/sending\r
- _closelist = { } -- handlers to close\r
- \r
- _readlistlen = 0 -- length of readlist\r
- _sendlistlen = 0 -- length of sendlist\r
- _timerlistlen = 0 -- lenght of timerlist\r
- \r
- _sendtraffic = 0 -- some stats\r
- _readtraffic = 0\r
- \r
- _selecttimeout = 1 -- timeout of socket.select\r
- _sleeptime = 0 -- time to wait at the end of every loop\r
- \r
- _maxsendlen = 51000 * 1024 -- max len of send buffer\r
- _maxreadlen = 25000 * 1024 -- max len of read buffer\r
- \r
- _checkinterval = 1200000 -- interval in secs to check idle clients\r
- _sendtimeout = 60000 -- allowed send idle time in secs\r
- _readtimeout = 6 * 60 * 60 -- allowed read idle time in secs\r
- \r
- _cleanqueue = false -- clean bufferqueue after using\r
- \r
- _maxclientsperserver = 1000\r
- \r
- _maxsslhandshake = 30 -- max handshake round-trips\r
- ----------------------------------// PRIVATE //--\r
- \r
- wrapserver = function( listeners, socket, ip, serverport, pattern, sslctx, maxconnections, startssl ) -- this function wraps a server\r
- \r
- maxconnections = maxconnections or _maxclientsperserver\r
- \r
- local connections = 0\r
- \r
- local dispatch, disconnect = listeners.incoming or listeners.listener, listeners.disconnect\r
- \r
- local err\r
- \r
- local ssl = false\r
- \r
- if sslctx then\r
- ssl = true\r
- if not ssl_newcontext then\r
- out_error "luasec not found"\r
- ssl = false\r
- end\r
- if type( sslctx ) ~= "table" then\r
- out_error "server.lua: wrong server sslctx"\r
- ssl = false\r
- end\r
- local ctx;\r
- ctx, err = ssl_newcontext( sslctx )\r
- if not ctx then\r
- err = err or "wrong sslctx parameters"\r
- local file;\r
- file = err:match("^error loading (.-) %(");\r
- if file then\r
- if file == "private key" then\r
- file = sslctx.key or "your private key";\r
- elseif file == "certificate" then\r
- file = sslctx.certificate or "your certificate file";\r
- end\r
- local reason = err:match("%((.+)%)$") or "some reason";\r
- if reason == "Permission denied" then\r
- reason = "Check that the permissions allow Prosody to read this file.";\r
- elseif reason == "No such file or directory" then\r
- reason = "Check that the path is correct, and the file exists.";\r
- elseif reason == "system lib" then\r
- reason = "Previous error (see logs), or other system error.";\r
- else\r
- reason = "Reason: "..tostring(reason or "unknown"):lower();\r
- end\r
- log("error", "SSL/TLS: Failed to load %s: %s", file, reason);\r
- else\r
- log("error", "SSL/TLS: Error initialising for port %d: %s", serverport, err );\r
- end\r
- ssl = false\r
- end\r
- sslctx = ctx;\r
- end\r
- if not ssl then\r
- sslctx = false;\r
- if startssl then\r
- log("error", "Failed to listen on port %d due to SSL/TLS to SSL/TLS initialisation errors (see logs)", serverport )\r
- return nil, "Cannot start ssl, see log for details"\r
- end\r
- end\r
- \r
- local accept = socket.accept\r
- \r
- --// public methods of the object //--\r
- \r
- local handler = { }\r
- \r
- handler.shutdown = function( ) end\r
- \r
- handler.ssl = function( )\r
- return ssl\r
- end\r
- handler.sslctx = function( )\r
- return sslctx\r
- end\r
- handler.remove = function( )\r
- connections = connections - 1\r
- end\r
- handler.close = function( )\r
- for _, handler in pairs( _socketlist ) do\r
- if handler.serverport == serverport then\r
- handler.disconnect( handler, "server closed" )\r
- handler.close( true )\r
- end\r
- end\r
- socket:close( )\r
- _sendlistlen = removesocket( _sendlist, socket, _sendlistlen )\r
- _readlistlen = removesocket( _readlist, socket, _readlistlen )\r
- _socketlist[ socket ] = nil\r
- handler = nil\r
- socket = nil\r
- --mem_free( )\r
- out_put "server.lua: closed server handler and removed sockets from list"\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.readbuffer = function( )\r
- if connections > maxconnections then\r
- out_put( "server.lua: refused new client connection: server full" )\r
- return false\r
- end\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 = wrapconnection( handler, listeners, client, ip, serverport, clientport, pattern, sslctx, startssl ) -- wrap new client socket\r
- if err then -- error while wrapping ssl socket\r
- return false\r
- end\r
- connections = connections + 1\r
- out_put( "server.lua: accepted new client connection from ", tostring(ip), ":", tostring(clientport), " to ", tostring(serverport))\r
- return dispatch( handler )\r
- elseif err then -- maybe timeout or something else\r
- out_put( "server.lua: error with new client connection: ", tostring(err) )\r
- return false\r
- end\r
- end\r
- return handler\r
- end\r
- \r
- wrapconnection = function( server, listeners, socket, ip, serverport, clientport, pattern, sslctx, startssl ) -- this function wraps a client to a handler object\r
- \r
- socket:settimeout( 0 )\r
- \r
- --// local import of socket methods //--\r
- \r
- local send\r
- local receive\r
- local shutdown\r
- \r
- --// private closures of the object //--\r
- \r
- local ssl\r
- \r
- local dispatch = listeners.incoming or listeners.listener\r
- local status = listeners.status\r
- local disconnect = listeners.disconnect\r
- \r
- local bufferqueue = { } -- buffer array\r
- local bufferqueuelen = 0 -- end of buffer array\r
- \r
- local toclose\r
- local fatalerror\r
- local needtls\r
- \r
- local bufferlen = 0\r
- \r
- local noread = false\r
- local nosend = false\r
- \r
- local sendtraffic, readtraffic = 0, 0\r
- \r
- local maxsendlen = _maxsendlen\r
- local maxreadlen = _maxreadlen\r
- \r
- --// public methods of the object //--\r
- \r
- local handler = bufferqueue -- saves a table ^_^\r
- \r
- handler.dispatch = function( )\r
- return dispatch\r
- end\r
- handler.disconnect = function( )\r
- return disconnect\r
- end\r
- handler.setlistener = function( listeners )\r
- dispatch = listeners.incoming\r
- disconnect = listeners.disconnect\r
- end\r
- handler.getstats = function( )\r
- return readtraffic, sendtraffic\r
- end\r
- handler.ssl = function( )\r
- return ssl\r
- end\r
- handler.sslctx = function ( )\r
- return sslctx\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( forced )\r
- if not handler then return true; end\r
- _readlistlen = removesocket( _readlist, socket, _readlistlen )\r
- _readtimes[ handler ] = nil\r
- if bufferqueuelen ~= 0 then\r
- if not ( forced or fatalerror ) then\r
- handler.sendbuffer( )\r
- if bufferqueuelen ~= 0 then -- try again...\r
- if handler then\r
- handler.write = nil -- ... but no further writing allowed\r
- end\r
- toclose = true\r
- return false\r
- end\r
- else\r
- send( socket, table_concat( bufferqueue, "", 1, bufferqueuelen ), 1, bufferlen ) -- forced send\r
- end\r
- end\r
- if socket then\r
- _ = shutdown and shutdown( socket )\r
- socket:close( )\r
- _sendlistlen = removesocket( _sendlist, socket, _sendlistlen )\r
- _socketlist[ socket ] = nil\r
- socket = nil\r
- else\r
- out_put "server.lua: socket already closed"\r
- end\r
- if handler then\r
- _writetimes[ handler ] = nil\r
- _closelist[ handler ] = nil\r
- handler = nil\r
- end\r
- if server then\r
- server.remove( )\r
- end\r
- out_put "server.lua: closed client handler and removed socket from list"\r
- return true\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
- local write = function( data )\r
- bufferlen = bufferlen + string_len( data )\r
- if bufferlen > maxsendlen then\r
- _closelist[ handler ] = "send buffer exceeded" -- cannot close the client at the moment, have to wait to the end of the cycle\r
- handler.write = idfalse -- dont write anymore\r
- return false\r
- elseif socket and not _sendlist[ socket ] then\r
- _sendlistlen = addsocket(_sendlist, socket, _sendlistlen)\r
- end\r
- bufferqueuelen = bufferqueuelen + 1\r
- bufferqueue[ bufferqueuelen ] = data\r
- if handler then\r
- _writetimes[ handler ] = _writetimes[ handler ] or _currenttime\r
- end\r
- return true\r
- end\r
- handler.write = write\r
- handler.bufferqueue = function( )\r
- return bufferqueue\r
- end\r
- handler.socket = function( )\r
- return socket\r
- end\r
- handler.pattern = function( new )\r
- pattern = new or pattern\r
- return pattern\r
- end\r
- handler.setsend = function ( newsend )\r
- send = newsend or send\r
- return send\r
- end\r
- handler.bufferlen = function( readlen, sendlen )\r
- maxsendlen = sendlen or maxsendlen\r
- maxreadlen = readlen or maxreadlen\r
- return bufferlen, maxreadlen, maxsendlen\r
- end\r
- handler.lock = function( switch )\r
- if switch == true then\r
- handler.write = idfalse\r
- local tmp = _sendlistlen\r
- _sendlistlen = removesocket( _sendlist, socket, _sendlistlen )\r
- _writetimes[ handler ] = nil\r
- if _sendlistlen ~= tmp then\r
- nosend = true\r
- end\r
- tmp = _readlistlen\r
- _readlistlen = removesocket( _readlist, socket, _readlistlen )\r
- _readtimes[ handler ] = nil\r
- if _readlistlen ~= tmp then\r
- noread = true\r
- end\r
- elseif switch == false then\r
- handler.write = write\r
- if noread then\r
- noread = false\r
- _readlistlen = addsocket(_readlist, socket, _readlistlen)\r
- _readtimes[ handler ] = _currenttime\r
- end\r
- if nosend then\r
- nosend = false\r
- write( "" )\r
- end\r
- end\r
- return noread, nosend\r
- end\r
- local _readbuffer = function( ) -- this function reads data\r
- local buffer, err, part = receive( socket, pattern ) -- receive buffer with "pattern"\r
- if not err or (err == "wantread" or err == "timeout") or string_len(part) > 0 then -- received something\r
- local buffer = buffer or part or ""\r
- local len = string_len( buffer )\r
- if len > maxreadlen then\r
- disconnect( handler, "receive buffer exceeded" )\r
- handler.close( true )\r
- return false\r
- end\r
- local count = len * STAT_UNIT\r
- readtraffic = readtraffic + count\r
- _readtraffic = _readtraffic + count\r
- _readtimes[ handler ] = _currenttime\r
- --out_put( "server.lua: read data '", buffer:gsub("[^%w%p ]", "."), "', error: ", err )\r
- return dispatch( handler, buffer, err )\r
- else -- connections was closed or fatal error\r
- out_put( "server.lua: client ", tostring(ip), ":", tostring(clientport), " read error: ", tostring(err) )\r
- fatalerror = true\r
- disconnect( handler, err )\r
- _ = handler and handler.close( )\r
- return false\r
- end\r
- end\r
- local _sendbuffer = function( ) -- this function sends data\r
- local succ, err, byte, buffer, count;\r
- local count;\r
- if socket then\r
- buffer = table_concat( bufferqueue, "", 1, bufferqueuelen )\r
- succ, err, byte = send( socket, buffer, 1, bufferlen )\r
- count = ( succ or byte or 0 ) * STAT_UNIT\r
- sendtraffic = sendtraffic + count\r
- _sendtraffic = _sendtraffic + count\r
- _ = _cleanqueue and clean( bufferqueue )\r
- --out_put( "server.lua: sended '", buffer, "', bytes: ", tostring(succ), ", error: ", tostring(err), ", part: ", tostring(byte), ", to: ", tostring(ip), ":", tostring(clientport) )\r
- else\r
- succ, err, count = false, "closed", 0;\r
- end\r
- if succ then -- sending succesful\r
- bufferqueuelen = 0\r
- bufferlen = 0\r
- _sendlistlen = removesocket( _sendlist, socket, _sendlistlen ) -- delete socket from writelist\r
- _ = needtls and handler.starttls(true)\r
- _writetimes[ handler ] = nil\r
- _ = toclose and handler.close( )\r
- return true\r
- elseif byte and ( err == "timeout" or err == "wantwrite" ) then -- want write\r
- buffer = string_sub( buffer, byte + 1, bufferlen ) -- new buffer\r
- bufferqueue[ 1 ] = buffer -- insert new buffer in queue\r
- bufferqueuelen = 1\r
- bufferlen = bufferlen - byte\r
- _writetimes[ handler ] = _currenttime\r
- return true\r
- else -- connection was closed during sending or fatal error\r
- out_put( "server.lua: client ", tostring(ip), ":", tostring(clientport), " write error: ", tostring(err) )\r
- fatalerror = true\r
- disconnect( handler, err )\r
- _ = handler and handler.close( )\r
- return false\r
- end\r
- end\r
- \r
- -- Set the sslctx\r
- local handshake;\r
- function handler.set_sslctx(new_sslctx)\r
- ssl = true\r
- sslctx = new_sslctx;\r
- local wrote\r
- local read\r
- handshake = coroutine_wrap( function( client ) -- create handshake coroutine\r
- local err\r
- for i = 1, _maxsslhandshake do\r
- _sendlistlen = ( wrote and removesocket( _sendlist, client, _sendlistlen ) ) or _sendlistlen\r
- _readlistlen = ( read and removesocket( _readlist, client, _readlistlen ) ) or _readlistlen\r
- read, wrote = nil, nil\r
- _, err = client:dohandshake( )\r
- if not err then\r
- out_put( "server.lua: ssl handshake done" )\r
- handler.readbuffer = _readbuffer -- when handshake is done, replace the handshake function with regular functions\r
- handler.sendbuffer = _sendbuffer\r
- _ = status and status( handler, "ssl-handshake-complete" )\r
- _readlistlen = addsocket(_readlist, client, _readlistlen)\r
- return true\r
- else\r
- out_put( "server.lua: error during ssl handshake: ", tostring(err) )\r
- if err == "wantwrite" and not wrote then\r
- _sendlistlen = addsocket(_sendlist, client, _sendlistlen)\r
- wrote = true\r
- elseif err == "wantread" and not read then\r
- _readlistlen = addsocket(_readlist, client, _readlistlen)\r
- read = true\r
- else\r
- break;\r
- end\r
- --coroutine_yield( handler, nil, err ) -- handshake not finished\r
- coroutine_yield( )\r
- end\r
- end\r
- disconnect( handler, "ssl handshake failed" )\r
- _ = handler and handler.close( true ) -- forced disconnect\r
- return false -- handshake failed\r
- end\r
- )\r
- end\r
- if sslctx then -- ssl?\r
- handler.set_sslctx(sslctx);\r
- if startssl then -- ssl now?\r
- --out_put("server.lua: ", "starting ssl handshake")\r
- local err\r
- socket, err = ssl_wrap( socket, sslctx ) -- wrap socket\r
- if err then\r
- out_put( "server.lua: ssl error: ", tostring(err) )\r
- --mem_free( )\r
- return nil, nil, err -- fatal error\r
- end\r
- socket:settimeout( 0 )\r
- handler.readbuffer = handshake\r
- handler.sendbuffer = handshake\r
- handshake( socket ) -- do handshake\r
- if not socket then\r
- return nil, nil, "ssl handshake failed";\r
- end\r
- else\r
- -- We're not automatically doing SSL, so we're not secure (yet)\r
- ssl = false\r
- handler.starttls = function( now )\r
- if not now then\r
- --out_put "server.lua: we need to do tls, but delaying until later"\r
- needtls = true\r
- return\r
- end\r
- --out_put( "server.lua: attempting to start tls on " .. tostring( socket ) )\r
- local oldsocket, err = socket\r
- socket, err = ssl_wrap( socket, sslctx ) -- wrap socket\r
- --out_put( "server.lua: sslwrapped socket is " .. tostring( socket ) )\r
- if err then\r
- out_put( "server.lua: error while starting tls on client: ", tostring(err) )\r
- return nil, err -- fatal error\r
- end\r
- \r
- socket:settimeout( 0 )\r
- \r
- -- add the new socket to our system\r
- \r
- send = socket.send\r
- receive = socket.receive\r
- shutdown = id\r
- \r
- _socketlist[ socket ] = handler\r
- _readlistlen = addsocket(_readlist, socket, _readlistlen)\r
- \r
- -- remove traces of the old socket\r
- \r
- _readlistlen = removesocket( _readlist, oldsocket, _readlistlen )\r
- _sendlistlen = removesocket( _sendlist, oldsocket, _sendlistlen )\r
- _socketlist[ oldsocket ] = nil\r
- \r
- handler.starttls = nil\r
- needtls = nil\r
- \r
- -- Secure now\r
- ssl = true\r
- \r
- handler.readbuffer = handshake\r
- handler.sendbuffer = handshake\r
- handshake( socket ) -- do handshake\r
- end\r
- handler.readbuffer = _readbuffer\r
- handler.sendbuffer = _sendbuffer\r
- end\r
- else -- normal connection\r
- ssl = false\r
- handler.readbuffer = _readbuffer\r
- handler.sendbuffer = _sendbuffer\r
- end\r
- \r
- send = socket.send\r
- receive = socket.receive\r
- shutdown = ( ssl and id ) or socket.shutdown\r
- \r
- _socketlist[ socket ] = handler\r
- _readlistlen = addsocket(_readlist, socket, _readlistlen)\r
- \r
- return handler, socket\r
- end\r
- \r
- id = function( )\r
- end\r
- \r
- idfalse = function( )\r
- return false\r
- end\r
- \r
- addsocket = function( list, socket, len )\r
- if not list[ socket ] then\r
- len = len + 1\r
- list[ len ] = socket\r
- list[ socket ] = len\r
- end\r
- return len;\r
- end\r
- \r
- removesocket = function( list, socket, len ) -- this function removes sockets from a list ( copied from copas )\r
- local pos = list[ socket ]\r
- if pos then\r
- list[ socket ] = nil\r
- local last = list[ len ]\r
- list[ len ] = nil\r
- if last ~= socket then\r
- list[ last ] = pos\r
- list[ pos ] = last\r
- end\r
- return len - 1\r
- end\r
- return len\r
- end\r
- \r
- closesocket = function( socket )\r
- _sendlistlen = removesocket( _sendlist, socket, _sendlistlen )\r
- _readlistlen = removesocket( _readlist, socket, _readlistlen )\r
- _socketlist[ socket ] = nil\r
- socket:close( )\r
- --mem_free( )\r
- end\r
- \r
- ----------------------------------// PUBLIC //--\r
- \r
- addserver = function( listeners, port, addr, pattern, sslctx, maxconnections, startssl ) -- this function provides a way for other scripts to reg a server\r
- local err\r
- --out_put("server.lua: autossl on ", port, " is ", startssl)\r
- if type( listeners ) ~= "table" then\r
- err = "invalid listener table"\r
- end\r
- if not type( port ) == "number" or not ( port >= 0 and port <= 65535 ) then\r
- err = "invalid port"\r
- elseif _server[ 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, port ", port, ": ", 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, port ", port, ": ", err )\r
- return nil, err\r
- end\r
- local handler, err = wrapserver( listeners, server, addr, port, pattern, sslctx, maxconnections, startssl ) -- wrap new server socket\r
- if not handler then\r
- server:close( )\r
- return nil, err\r
- end\r
- server:settimeout( 0 )\r
- _readlistlen = addsocket(_readlist, server, _readlistlen)\r
- _server[ port ] = handler\r
- _socketlist[ server ] = handler\r
- out_put( "server.lua: new server listener on '", addr, ":", port, "'" )\r
- return handler\r
- end\r
- \r
- getserver = function ( port )\r
- return _server[ port ];\r
- end\r
- \r
- removeserver = function( port )\r
- local handler = _server[ port ]\r
- if not handler then\r
- return nil, "no server found on port '" .. tostring( port ) .. "'"\r
- end\r
- handler.close( )\r
- _server[ port ] = nil\r
- return true\r
- end\r
- \r
- closeall = function( )\r
- for _, handler in pairs( _socketlist ) do\r
- handler.close( )\r
- _socketlist[ _ ] = nil\r
- end\r
- _readlistlen = 0\r
- _sendlistlen = 0\r
- _timerlistlen = 0\r
- _server = { }\r
- _readlist = { }\r
- _sendlist = { }\r
- _timerlist = { }\r
- _socketlist = { }\r
- --mem_free( )\r
- end\r
- \r
- getsettings = function( )\r
- return _selecttimeout, _sleeptime, _maxsendlen, _maxreadlen, _checkinterval, _sendtimeout, _readtimeout, _cleanqueue, _maxclientsperserver, _maxsslhandshake\r
- end\r
- \r
- changesettings = function( new )\r
- if type( new ) ~= "table" then\r
- return nil, "invalid settings table"\r
- end\r
- _selecttimeout = tonumber( new.timeout ) or _selecttimeout\r
- _sleeptime = tonumber( new.sleeptime ) or _sleeptime\r
- _maxsendlen = tonumber( new.maxsendlen ) or _maxsendlen\r
- _maxreadlen = tonumber( new.maxreadlen ) or _maxreadlen\r
- _checkinterval = tonumber( new.checkinterval ) or _checkinterval\r
- _sendtimeout = tonumber( new.sendtimeout ) or _sendtimeout\r
- _readtimeout = tonumber( new.readtimeout ) or _readtimeout\r
- _cleanqueue = new.cleanqueue\r
- _maxclientsperserver = new._maxclientsperserver or _maxclientsperserver\r
- _maxsslhandshake = new._maxsslhandshake or _maxsslhandshake\r
- return true\r
- end\r
- \r
- addtimer = function( listener )\r
- if type( listener ) ~= "function" then\r
- return nil, "invalid listener function"\r
- end\r
- _timerlistlen = _timerlistlen + 1\r
- _timerlist[ _timerlistlen ] = listener\r
- return true\r
- end\r
- \r
- stats = function( )\r
- return _readtraffic, _sendtraffic, _readlistlen, _sendlistlen, _timerlistlen\r
- end\r
- \r
- local dontstop = true; -- thinking about tomorrow, ...\r
- \r
- setquitting = function (quit)\r
- dontstop = not quit;\r
- return;\r
- end\r
- \r
- loop = function( ) -- this is the main loop of the program\r
- while dontstop do\r
- local read, write, err = socket_select( _readlist, _sendlist, _selecttimeout )\r
- for i, socket in ipairs( write ) do -- send data waiting in writequeues\r
- local handler = _socketlist[ socket ]\r
- if handler then\r
- handler.sendbuffer( )\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.readbuffer( )\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
- for handler, err in pairs( _closelist ) do\r
- handler.disconnect( )( handler, err )\r
- handler.close( true ) -- forced disconnect\r
- end\r
- clean( _closelist )\r
- _currenttime = os_time( )\r
- if os_difftime( _currenttime - _timer ) >= 1 then\r
- for i = 1, _timerlistlen do\r
- _timerlist[ i ]( _currenttime ) -- fire timers\r
- end\r
- _timer = _currenttime\r
- end\r
- socket_sleep( _sleeptime ) -- wait some time\r
- --collectgarbage( )\r
- end\r
- return "quitting"\r
- end\r
- \r
- --// EXPERIMENTAL //--\r
- \r
- local wrapclient = function( socket, ip, serverport, listeners, pattern, sslctx, startssl )\r
- local handler = wrapconnection( nil, listeners, socket, ip, serverport, "clientport", pattern, sslctx, startssl )\r
- _socketlist[ socket ] = handler\r
- _sendlistlen = addsocket(_sendlist, socket, _sendlistlen)\r
- return handler, socket\r
- end\r
- \r
- local addclient = function( address, port, listeners, pattern, sslctx, startssl )\r
- local client, err = luasocket.tcp( )\r
- if err then\r
- return nil, err\r
- end\r
- client:settimeout( 0 )\r
- _, err = client:connect( address, port )\r
- if err then -- try again\r
- local handler = wrapclient( client, address, port, listeners )\r
- else\r
- wrapconnection( nil, listeners, client, address, port, "clientport", pattern, sslctx, startssl )\r
- end\r
- end\r
- \r
- --// EXPERIMENTAL //--\r
- \r
- ----------------------------------// BEGIN //--\r
- \r
- use "setmetatable" ( _socketlist, { __mode = "k" } )\r
- use "setmetatable" ( _readtimes, { __mode = "k" } )\r
- use "setmetatable" ( _writetimes, { __mode = "k" } )\r
- \r
- _timer = os_time( )\r
- _starttime = os_time( )\r
- \r
- addtimer( function( )\r
- local difftime = os_difftime( _currenttime - _starttime )\r
- if difftime > _checkinterval then\r
- _starttime = _currenttime\r
- for handler, timestamp in pairs( _writetimes ) do\r
- if os_difftime( _currenttime - timestamp ) > _sendtimeout then\r
- --_writetimes[ handler ] = nil\r
- handler.disconnect( )( handler, "send timeout" )\r
- handler.close( true ) -- forced disconnect\r
- end\r
- end\r
- for handler, timestamp in pairs( _readtimes ) do\r
- if os_difftime( _currenttime - timestamp ) > _readtimeout then\r
- --_readtimes[ handler ] = nil\r
- handler.disconnect( )( handler, "read timeout" )\r
- handler.close( ) -- forced disconnect?\r
- end\r
- end\r
- end\r
- end\r
- )\r
- \r
- ----------------------------------// PUBLIC INTERFACE //--\r
- \r
- return {\r
- \r
- addclient = addclient,\r
- wrapclient = wrapclient,\r
- \r
- loop = loop,\r
- stats = stats,\r
- closeall = closeall,\r
- addtimer = addtimer,\r
- addserver = addserver,\r
- getserver = getserver,\r
- getsettings = getsettings,\r
- setquitting = setquitting,\r
- removeserver = removeserver,\r
- changesettings = changesettings,\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 = require "core.configmanager".get("*", "core", "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";
+ -- util.timer requires "net.server", so instead of having
+ -- Lua look for, and load us again (causing a loop) - set this here
+ -- (usually it isn't set until we return, look down there...)
+ package.loaded["net.server"] = server;
+
+ -- Backwards compatibility for timers, addtimer
+ -- called a function roughly every second
+ local add_task = require "util.timer".add_task;
+ function server.addtimer(f)
+ return add_task(1, function (...) f(...); return 1; end);
+ end
+
+ -- 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
+ server = require "net.server_select";
+ package.loaded["net.server"] = server;
+ end
+
+ -- require "net.server" shall now forever return this,
+ -- ie. server_select or server_event as chosen above.
+ return server;
projects / prosody.git / commitdiff