X-Git-Url: https://git.kengrimes.com/?p=henge%2Fkiak.git;a=blobdiff_plain;f=main.js;h=b2d4c7ab7f52f81011d52202de422d0c830948c9;hp=4ae47da46fcc9cc034ff440b8f01ab3794996dab;hb=44e0b2d571c71ebd410b78366c8bc9dc463a96c4;hpb=1c99c911f3941f23ceaa5f1b303e986f6de0dc7f

diff --git a/main.js b/main.js
index 4ae47da..b2d4c7a 100644
--- a/main.js
+++ b/main.js
@@ -1,58 +1,220 @@
-const electron = require('electron')
-const app = electron.app
-const url = require('url')
-const WebSocket = require('ws')
-const http = require('http')
-const fs = require('fs')
-
-const routes = {
-  '/': function root(response) {
-    response.write(fs.readFileSync('host/host.html'))
-    response.end()
-  },
-  '/admin.js': function js(response) {
-    response.write(fs.readFileSync('host/host.js'))
-    response.end()
-  },
-  '/adapter.js': function adapter(response) {
-    response.write(fs.readFileSync('adapter.js'))
-    response.end()
-  },
-  '/favicon.ico': function favicon(response) {
-    response.write('N/A')
-    response.end()
-  },
-  '/streamlist': function streamlist(response) {
-    getDefaultStream()
-  }
-}
-
-const rooms = {}
-
-
-/* TODO: Swap out url.parse with regex? */
-function determineResponse(request) {
-  const clientIP  = request.connection.remoteAddress
-                  || request.socket.remoteAddress
-                  || request.connection.socket.remoteAddress
-                  || req.headers['x-forwarded-for'].split(',')[0]
-  const parsedURL = url.parse(request.url)
-
-  /* Get the room name */
-  const pathname = parsedURL.pathname
-
-
-}
-
-app.on('ready', function() {
-  console.log('create server')
-  http.createServer(function(request, response) {
-
-    let route = determineResponse(request)
-
-    console.log('routing to ' + route)
-    routes[route](response)
-
-  }).listen(5140);
-
-});
+/**
+* @file      Node entry and main driver
+* @author    Jordan Lavatai, Ken Grimes
+* @version   0.0.1
+* @license   AGPL-3.0
+* @copyright loljk 2017
+* @summ ary   HTTP(S) Router that uses the first directory in the requested URL
+*            as the route name
+*/
+const fs = require('fs')
+const ws = require('ws')
+const path = require('path')
+const http = require('http')
+const https = require('https')
+const getport = require('get-port')
+const mime = require('mime')
+const opts = require('./opts.js')
+
+const router = {
+  skelPage:   fs.readFileSync('./skel.html', { encoding: 'utf8' }).split('<!--STRAPP_SRC-->'),
+  clientJS:   fs.readFileSync(opts['client-js']),
+  hostJS:     fs.readFileSync(opts['host-js']),
+  routes:     {},
+  httpsOpt:   undefined,
+  httpd:      undefined,
+  wsProtocol: opts['no-tls'] ? 'ws' : 'wss',
+  respond:    (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()
+        })
+      }
+
+
+    }
+  }
+
+  /**
+  * @summary Boot up the router.  With TLS, we must wait for file reads to sync.
+  */
+  if (!opts['no-tls']) {
+    console.log('tls')
+    let filesRead = 0
+    let key = undefined
+    let cert = undefined
+    const syncRead = () => {
+      if (++filesRead == 2) {
+        if (key == undefined)
+        console.log(`ERR: Key ${opts['ca-key']} inaccessible, tls will fail`)
+        if(cert == undefined)
+        console.log(`ERR: Cert ${opts['ca-cert']} inaccessible, tls will fail`)
+        else if (key != undefined) {
+          router.httpsOpts = { cert: cert, key: key}
+          router.httpd = https.createServer(router.httpsOpts, router.respond)
+          .listen(opts['port'])
+        }
+      }
+    }
+    fs.readFile(opts['ca-key'], { encoding: 'utf8' }, (err, data) => {
+      if (!err) key = data
+      syncRead()
+    })
+    fs.readFile(opts['ca-cert'], { encoding: 'utf8' }, (err, data) => {
+      if (!err) cert = data
+      syncRead()
+    })
+  }
+  else
+  router.httpd = http.createServer(router.respond).listen(opts['port'])
+
+  //TODO: if ("electron" in process.versions) open a local renderwindow, and route to it