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server.mjs
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server.mjs
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//const sack = require( "sack.vfs" );
//const path = require( "path" );
import {sack} from "../../vfs_module.mjs";
import {Events} from "../events/events.mjs";
import {uExpress} from "./uexpress.mjs";
import path from "path";
const disk = sack.Volume();
const myPath = import.meta.url.split(/\/|\\/g);
const tmpPath = myPath.slice();
tmpPath.splice( 0, 3 );
tmpPath.splice( tmpPath.length-1, 1 );
const parentRoot = (process.platform==="win32"?"":'/')+tmpPath.slice(0,-2).join( '/' );
function read( name ) {
try {
const data = sack.Volume.readAsString( name );
return data;
} catch(err) {
console.log( "Failed to load cert:", name );
return undefined;
}
}
function getCertChain( ) {
//SSLCertificateFile /etc/letsencrypt/live/d3x0r.org/fullchain.pem
//SSLCertificateKeyFile /etc/letsencrypt/live/d3x0r.org/privkey.pem
if( process.env.SSL_PATH ) {
//if( !process.env.SSL_HOST ) {
// console.log( "ssl host name not specified..." )
// return null;
//}
return process.env.SSL_PATH + "/fullchain.pem"
}
return parentRoot + "/certgen/cert-chain.pem"
}
function getCertKey( ) {
if( process.env.SSL_PATH ) {
if( !process.env.SSL_HOST ) {
console.log( "ssl host name not specified..." )
return null;
}
return process.env.SSL_PATH + "/privkey.pem"
}
return parentRoot + "/certgen/rootkeynopass.prv"
}
const certChain = read( getCertChain() );
if( !process.env.SSL_HOST ) {
process.env.SSL_HOST = sack.TLS.hosts( certChain ).join("~");
console.log( "Host not specified, using certificate hosts:", process.env.SSL_HOST );
}
//console.log( "certChain loaded?", sack.TLS.hosts( certChain ) );
const certKey = read( getCertKey() );
const encMap = {
'.gz':'gzip'
};
const extMap = { '.js': 'text/javascript'
, '.mjs':'text/javascript'
, '.css':'text/css'
,'.json':'text/javascript'
,'.png':'image/png'
,'.html':'text/html'
,'.htm':'text/html'
,'.jpg':'image/jpg'
,'.webm':'video/webm'
,'.mp4':'video/mp4'
,'.svg':'image/svg+xml'
,'.wav':'audio/wav'
,'.crt':'application/x-x509-ca-cert'
,'.pem':'application/x-pem-file'
,'.wasm': 'application/wasm'
, '.asm': 'application/wasm'
, '.bat':'application/x-msdownload'
, '.dll':'application/x-msdownload'
, '.exe':'application/x-msdownload'
, '.cmd':'application/x-msdownload'
, '.com':'application/x-msdownload'
, '.msi':'application/x-msdownload'
}
const requests = [];
let reqTimeout = 0;
let lastFilePath = null;
function logRequests() {
const log = requests.join(', ');
requests.length = 0;
console.log( "Requests:", log );
}
//exports.getRequestHandler = getRequestHandler;
export function getRequestHandler( serverOpts ) {
serverOpts = serverOpts || {};
let resourcePath = serverOpts.resourcePath || ".";
const npm_path = serverOpts.npmPath || ".";
return function( req, res ) {
/*
this is the request remote address if required....
const ip = ( req.headers && req.headers['x-forwarded-for'] ) ||
req.connection.remoteAddress ||
req.socket.remoteAddress ||
req.connection.socket.remoteAddress;
*/
//const resource_path = serverOpts.resourcePath || ".";
//console.log( "Received request:", req );
if( req.url[req.url.length-1] === "/" ) req.url += "index.html";
let filePath = resourcePath + unescape(req.url);
if( req.url.startsWith( "/node_modules/" )
&& ( req.url.startsWith( "/node_modules/@d3x0r" )
|| req.url.startsWith( "/node_modules/jsox" )
|| req.url.startsWith( "/node_modules/sack.vfs/apps" ) ) )
filePath=npm_path + unescape(req.url);
let extname = path.extname(filePath);
let contentEncoding = encMap[extname];
if( contentEncoding ) {
extname = path.extname(path.basename(filePath,extname));
}
if( disk.isDir( filePath ) ) {filePath += "/index.html"; extname = ".html"; }
const contentType = extMap[extname] || "text/plain";
//console.log( ":", extname, filePath )
if( disk.exists( filePath ) ) {
const fc = disk.read(filePath );
if( fc ) {
const headers = { 'Content-Type': contentType, 'Access-Control-Allow-Origin' : req.connection.headers.Origin };
if( contentEncoding ) headers['Content-Encoding']=contentEncoding;
res.writeHead(200, headers );
res.end( fc );
if( requests.length !== 0 )
clearTimeout( reqTimeout );
reqTimeout = setTimeout( logRequests, 500 );
requests.push( req.url );
} else {
console.log( 'file exists, but reading it returned nothing?', filePath, fc );
return false;
}
return true;
} else {
lastFilePath = filePath;
return false;
}
};
}
function hookJSOX( serverOpts, server ) {
const app = uExpress();
server.addHandler( app.handle );
server.app = app;
app.get( /.*\.jsox|.*\.json6/, (req,res)=>{
console.log( "express hook?", req.url , serverOpts.resourcePath + req.url);
const headers = {
'Content-Type': "text/javascript",
}
let filePath;
if( req.url.startsWith( "/common/" ) ) {
filePath = commonRoot + decodeURI(req.url).replace( "/common", "" );
}else {
filePath = serverOpts.resourcePath + req.url;
}
const config = disk.read( filePath );
if( config ) {
res.writeHead( 200, headers );
const resultContent = "import {JSOX} from '/node_modules/jsox/lib/jsox.mjs';const config = JSOX.parse( `" + config.toString().replace( "\\", "\\\\" ).replace( '"', '\\"' ) + "`);export default config;";
res.end( resultContent );
return true;
}else {
console.log( "no file.." );
return false;
}
} )
}
class Server extends Events {
handlers = [];
resourcePath = ".";
npmPath = ".";
app = null;
constructor( server, serverOpts, reqHandler ) {
super();
this.reqHandler = reqHandler;
this.serverOpts = serverOpts;
this.server = server;
}
server = null;
//handleEvent( req, res ) {
// return eventHandler( req, res );
//}
setResourcePath( path ) {
resourcePath = path;
}
addHandler( handler ) {
this.handlers.push( handler );
}
removeHandler( handler ) {
const index = this.handlers.findIndex( h=>h===handler );
if( index >= 0 )
handlers.splice( index, 1 );
}
handleEvent(req,res) {
for( let handler of this.handlers ) {
if( handler( req, res, this.serverOpts ) ) {
return true;
}
}
if( !this.reqHandler( req,res ) ) {
if( requests.length !== 0 )
clearTimeout( reqTimeout );
reqTimeout = setTimeout( logRequests, 100 );
requests.push( "Failed request: " + req.url + " as " + lastFilePath );
res.writeHead( 404, {'Access-Control-Allow-Origin' : req.connection.headers.Origin } );
res.end( "<HTML><HEAD><title>404</title></HEAD><BODY>404<br>"+req.url+"</BODY></HTML>");
}
}
}
//exports.open = openServer;
let eventHandler = null;
export function openServer( opts, cbAccept, cbConnect )
{
let handlers = [];
const serverOpts = opts || {};
if( !("port" in serverOpts )) serverOpts.port = Number(process.env.PORT)||(process.argv.length > 2?Number(process.argv[2]):0) || 8080;
if( !("resourcePath" in serverOpts ) ) serverOpts.resourcePath = "."
if( certChain )
{
if( !serverOpts.hosts ) serverOpts.hosts = [];
serverOpts.hosts.push( {
host: process.env.SSL_HOST || "localhost",
cert : serverOpts.cert || certChain,
key : serverOpts.key || certKey
});
//serverOpts.cert = serverOpts.cert || certChain;
//serverOpts.key = serverOpts.key || certKey;
}
const server = sack.WebSocket.Server( serverOpts )
//console.log( "serving on " + serverOpts.port, server );
//console.log( "with:", disk.dir() );
const srvr = new Server( server, serverOpts, getRequestHandler( opts ) );
server.onrequest = srvr.handleEvent.bind( srvr );
server.on( "lowError",function (error, address, buffer) {
if( error !== 1 && error != 6 )
if( error === 7 ) {
console.log( "Requested host not found:", address.remoteAddress, "requested:", buffer );
return;
}
else console.log( "Low Error with:", error, address, buffer );
//if( buffer )
// buffer = new TextDecoder().decode( buffer );
server.disableSSL(); // resume with non SSL
} );
server.onaccept = function ( ws ) {
//console.log( "send accept?", cbAccept );
if( cbAccept ) return cbAccept.call(this,ws);
if( srvr.on( "accept", ws ) ) {
this.accept();
return;
}
if( process.env.DEFAULT_REJECT_WEBSOCKET == "1" )
this.reject();
else
this.accept();
};
server.onconnect = function (ws) {
try {
if( cbConnect ) return cbConnect.call(this,ws);
}catch( err){
console.log( "onconnect callback failed (C++ isn't so good at catching exceptions...):", err );
return;
}
ws.nodelay = true;
if( !srvr.on( "connect", ws ) ) {
ws.onmessage = function( msg ) {
// echo message.
// ws.send( msg );
// parser.write( msg );
// no message callback defined
};
ws.onclose = function() {
console.log( "Remote closed" );
};
}
};
hookJSOX( serverOpts, srvr );
return srvr;
}