--- 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;
+-- \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 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
projects / prosody.git / commitdiff