* @author Ken Grimes
* @version 0.0.1
* @license AGPL-3.0
- * @copyright jk software 2017
+ * @copyright Strapp.io
*/
const fs = require('fs')
-module.exports = (opts) => {
- const startHttpd = (listener) => {
- if (opts['no-tls'])
- return require('http').createServer(listener)
- if (fs.existsSync(opts['ca-cert']))
-
- }
- return {
- httpd: startHttpd(),
- wsd: startWsd()
+const dlog = (msg) => console.log(msg)
+
+exports = {
+ /** Regular expression for valid routes
+ * @var {Object.RegEx} validRoutes - matches valid route names
+ */
+ validRoutes: /[a-zA-Z][a-zA-Z0-9\-_]*/,
+
+ /** @func
+ * @summary Synchronize Reading Multiple Files
+ * @desc reads an array of files into an object, whose keys are the
+ * input filenames, and values are the data read
+ * @arg {string[]} files - array of file names to read
+ * @arg {Object} [readOpts] - options to pass to fs.readFile()
+ */
+ syncReads: (files, readOpts) => new Promise((resolve,reject) => {
+ dlog(`syncReads: ${files}`)
+ let count = 0
+ let results = {}
+ const read_cb = (fileName) => (err, data) => {
+ if (err)
+ reject(err)
+ else
+ results[fileName] = data
+ if (++count == files.length)
+ resolve(results)
+ }
+ if (readOpts == undefined)
+ readOpts = { encoding: 'utf8' }
+ files.forEach((file) => fs.readFile(file, readOpts, read_cb(file)))
+ }),
+
+ /** @func
+ * @summary Main router listener
+ * @desc listens for client requests and services routes/files
+ * @arg {http.ClientRequest} request
+ * @arg {http.ServerResponse} response
+ */
+ listener: function (request,response) {
+ dlog(`Received request ${request.method} ${request.url}`)
+ const htArgv = request.url.slice(1).split('?')
+ let routePath = htArgv[0].split('/')[0]
+ let routeName = routePath[0]
+ let route = this.routes[routeName]
+ if (route) {
+ if (route.host == (request.headers['x-forwarded-for'] ||
+ request.connection.remoteAddress))
+ this.serveHost(response, route, htArgv)
+ else
+ this.serveRoute(response, route)
+ }
+ else if (this.validRoutes.test(routeName)) {
+ route = this.createRoute(routeName, this.httpsOpts)
+ this.serveHost(response, route, htArgv)
+ }
+ else {
+ this.serveFile(response, routePath)
+ }
+ },
+
+ /** @func
+ * @summary Serve a route to an http client
+ * @desc routes may be bound to the filesystem, or to an outgoing host
+ * @arg {http.ServerResponse} response - response object to use
+ * @arg {string} routeName - name of the route to follow
+ */
+ serveRoute: function (response, routeName) {
+ },
+
+ /** @func
+ * @summary Create a new route
+ * @desc makes a new route for the given route name
+ * @arg {string} routeName - name of the new route
+ * @arg {string} host - Origin address from the request that made this
+ * route (for security verification on the socket)
+ * @arg {Object} [httpsOpts] - key and cert for tls
+ */
+ createRoute: function (routeName, host, httpsOpts) {
+ dlog(`Creating ${httpsOpts ? 'TLS ' : ''}route ${routeName} from ${host}`)
+ if (routeName in this.routes)
+ throw new Error(`route ${routeName} already exists`)
+ const httpd = httpsOpts
+ ? require('https').createServer(httpsOpts)
+ : require('http').createServer()
+ const wsd = new require('ws').Server({
+ server: httpd,
+ verifyClient: (info) => info.origin == host && (info.secure || !httpsOpts)
+ })
+ const route = {
+ pendingResponses: new Map([]),
+ host: host,
+ httpd: httpd,
+ wsd: wsd,
+ name: routeName,
+ socket: undefined
+ }
+ wsd.on('connection', (socket) =>
+ socket.on('message', (msg) =>
+ this.hostMessage(msg,route)))
+ this.routes[routeName] = route
+ return route
+ },
+
+ /** @func
+ * @summary handle host message
+ * @desc receives a message from a host, handles the command (first character),
+ * and responds to either the host or the client, or both. Commands
+ * are whitespace separated strings.
+ * Commands:
+ * < clientKey requestID payload
+ * Route 'payload' to the client identified by 'clientKey', in
+ * response to the request identified by 'requestID'
+ * ! errorMessage errorCode [offendingMessage]
+ * Notify host that an error has occured, providing a message
+ * and error code. 'offendingMessage', if present, is the
+ * message received from the remote that triggered the error.
+ * @arg {string} message - raw string from the host
+ * @arg {Object} route - the route over
+ */
+ hostMessage: function (message, route) {
+ const argv = message.split(' ')
+ const command = argv[0][0]
+ argv = argv.slice(1)
+ dlog(`Received host message from ${route.name}: ${command}`)
+ switch (command) {
+ case '<':
+ if (argv.length == 3) {
+ const response = route.pendingResponses.get(argv[0] + argv[1])
+ response.writeHead(200, { 'Content-Type': 'application/octet-stream' })
+ response.write(argv[2])
+ response.end()
+ }
+ else {
+ route.socket.send(`! "Insufficient arguments" 0 ${message}`)
+ }
+ break
+ case '!':
+ if (argv.length == 3)
+ argv[0] += `\nIn message: ${argv[2]}`
+ console.log(`Error[${route.host}|${argv[1]}]:${argv[0]}`)
+ break
+ }
+ },
+
+ /** @func
+ * @summary Serve a file to an http client after a request
+ * @desc reads files from the system to be distributed to clients, and
+ * buffers recently accessed files
+ * @arg {http.ServerResponse} response - the response object to use
+ * @arg {string} filePath - location of the file on disk to service
+ */
+ serveFile: function (response, filePath) {
+ },
+
+ /** @func
+ * @summary Start main HTTP server
+ * @desc starts up an HTTP or HTTPS server used for routing
+ * @arg {number|string} port - local system port to bind to
+ * @arg {Object} [tls] - if present, startHttpServer will start in tls
+ * mode. supported properties:
+ * 'certfile': certificate file location
+ * 'keyfile': key file location
+ */
+ startHttpServer: function (port, tls) {
+ if ('httpd' in this)
+ throw new Error('httpd already running')
+ if (tls == undefined)
+ this.httpd = require('http').createServer(this.listener)
+ else if (!('key' in tls) || !('cert' in tls))
+ throw new Error('HTTPS requires a valid key and cert')
+ else
+ this.syncReads([tls.keyfile, tls.certfile]).then((results) => {
+ Object.defineProperty(this, 'httpsOpts', {
+ value: {
+ key: results[tls.keyfile],
+ cert: results[tls.certfile]
+ }
+ })
+ this.httpd = require('https').createServer(httpsOpts, this.listener)
+ })
+ this.httpd.listen(port)
+ console.log(`HTTP${(tls == undefined) ? 'S' : ''} ` +
+ `Server Started on Port ${port}`)
}
}
+
+// exports.create = (opts) => { return {
+// opts: opts,
+// listener: function (request, response) {
+// console.log('server handling request')
+// const serveFile = (fPath) => {
+// fs.readFile(fPath, { encoding: 'utf8' }, (err, data) => {
+// if (err || data == undefined) {
+// response.writeHead(404)
+// response.end()
+// }
+// else {
+// response.writeHead(200, { 'Content-Type': mime.lookup(fPath) })
+// response.write(data)
+// response.end()
+// }
+// })
+// }
+// const htArgv = request.url.slice(1).split("?")
+// let routePath = htArgv[0].split('/')
+// let routeName = routePath[0]
+
+
+// if (routeName === '' || routeName === 'index.html')
+// serveFile(opts['index'])
+// else if (routeName in opts['bindings']) {
+// let localPath = path.normalize(opts['bindings'][routeName].concat(path.sep + routePath.slice(1).join(path.sep)))
+// if (localPath.includes(opts['bindings'][routeName])) {
+// fs.readdir(localPath, (err, files) => {
+// if (err)
+// serveFile(localPath)
+// else
+// serveFile(`${localPath}/index.html`)
+// })
+// }
+// else {
+// console.log(`SEC: ${localPath} references files not in route`)
+// }
+// }
+// /* TODO: Handle reconnecting host */
+// else if (routeName in router.routes) {
+// const route = router.routes[routeName]
+// const clients = route['clients']
+// const headerData = request.headers['x-strapp-type']
+
+
+
+
+// /* Client is INIT GET */
+// if (headerData === undefined) {
+// console.log('client init GET')
+// response.writeHead(200, { 'Content-Type': 'text/html' })
+// response.write(`${router.skelPage[0]}${router.clientJS}${router.skelPage[1]}`)
+// response.end()
+// //TODO: if route.socket == undefined: have server delay this send until host connects
+// // (this happens when a client connects to an active route with no currently-online host)
+// }
+// else if (headerData.localeCompare('ice-candidate-request') === 0) {
+// console.log('Server: received ice-candidate-request from Client')
+// let pubKey = request.headers['x-client-pubkey']
+// clients.set(pubKey, response)
+// pubKey = '{ "pubKey": "' + pubKey + '" }'
+// route.socket.send(pubKey)
+// }
+// else if (headerData.localeCompare('ice-candidate-submission') === 0) {
+// console.log('Server: recieved ice-candidate-submission from Client')
+// let data = []
+// request.on('data', (chunk) => {
+// data.push(chunk)
+// }).on('end', () => {
+// console.log('Sending ice-candidate-submission to Host')
+// data = Buffer.concat(data).toString();
+// clients.set(JSON.parse(data)['pubKey'], response)
+// route.socket.send(data)
+// })
+// }
+// else if (headerData.localeCompare('client-sdp-offer') === 0){ /* Client sent offer, waiting for answer */
+// console.log('Server: Sending client offer to host')
+// clients.set(JSON.parse(request.headers['x-client-offer'])['pubKey'], response)
+// route.socket.send(request.headers['x-client-offer'])
+// } else {
+// console.log('Unhandled stuff')
+// console.log(request.headers)
+// }
+
+// }
+// else {
+// router.routes[routeName] = true
+// const newRoute = {}
+// newRoute.clients = new Map([])
+// newRoute.host = request.headers['x-forwarded-for'] || request.connection.remoteAddress
+// getport().then( (port) => {
+// newRoute.port = port
+// if (opts['no-tls'])
+// newRoute.httpd = http.createServer()
+// else
+// newRoute.httpd = https.createServer(router.httpsOpts)
+// newRoute.httpd.listen(newRoute.port)
+// newRoute.wsd = new ws.Server( { server: newRoute.httpd } )
+// newRoute.wsd.on('connection', (sock) => {
+// console.log(`${routeName} server has been established`)
+// newRoute.socket = sock
+
+// /* Handle all messages from host */
+// sock.on('message', (hostMessage) => {
+// hostMessage = JSON.parse(hostMessage)
+// response = newRoute.clients.get(hostMessage['clientPubKey'])
+
+// /* If the host response is a answer */
+// if (hostMessage['cmd'].localeCompare('< sdp pubKey') === 0) {
+// console.log('Server: Sending host answer to client')
+// response.writeHead(200, { 'Content-Type': 'application/json' })
+// response.write(JSON.stringify(hostMessage))
+// response.end()
+// }
+// else if (hostMessage['cmd'].localeCompare('< ice pubKey') === 0){
+// /* if the host response is an ice candidate */
+// console.log('Server: Handling host ICE message')
+// let iceState = hostMessage['iceState']
+// /* If there are any ice candidates, send them back */
+// switch(iceState) {
+// case "a":
+// response.writeHead('200', {'x-strapp-type': 'ice-candidate-available'})
+// response.write(JSON.stringify(hostMessage))
+// response.end()
+// break
+// case "g":
+// console.log('Server: Host is still gathering candidates, keep trying')
+// response.writeHead('200', {'x-strapp-type': 'ice-state-gathering'})
+// response.write(JSON.stringify(hostMessage))
+// response.end()
+// break
+// case "c":
+// console.log('Server: Host has completed gathering candidates')
+// response.writeHead('200', {'x-strapp-type': 'ice-state-complete'})
+// response.write(JSON.stringify(hostMessage))
+// response.end()
+// break
+// default:
+// console.log('unhandled iceState from host')
+// break
+// }
+// }
+
+// })
+// })
+
+// console.log(`Listening for websocket ${newRoute.host} on port ${newRoute.port}`)
+// router.routes[routeName] = newRoute
+// }).then(() => {
+// response.writeHead(200, { 'Content-Type': 'text/html' })
+// response.write(`${router.skelPage[0]}` +
+// `\tconst _strapp_port = ${newRoute.port}\n` +
+// `\tconst _strapp_protocol = '${router.wsProtocol}'\n` +
+// `${router.hostJS}\n${router.skelPage[1]}`)
+// response.end()
+// })
+// }
+// },
+// startHttpd: () => require('http').createServer(this.listener)
+// }
+
projects / henge / kiak.git / commitdiff