rebasing to flask, adding basic terminal functionality

public/ffmpeg-web.js

@@ -148,13 +148,19 @@ function saveall(){
 //// Terminal Page rendering ////
 function renderterminal(){
   pagepurge();
-  $('#pagecontent').append('<center><div class="spinner-border" style="width: 6rem; height: 6rem;"></div></center>');
-  socket.emit('getterminal');
+  socket.emit('giveterm');
+  $('#pagecontent').append('<div id="terminal-container"</div>');
+  var terminalContainer = document.getElementById('terminal-container');
+  var term = new Terminal({cursorBlink: true});
+  term.open(terminalContainer);
+  term.setOption('theme', { foreground: '#00ff00' });
+  socket.on('sendterm', function(data){
+    term.write(data);
+  });
+  term.on('data', function (data) {
+    socket.emit('termdata', data);
+  });
 }
-socket.on('sendterminal', function(data){
-  pagepurge();
-  $('#pagecontent').append('<center>Raw bash terminal here for users to test commands</center>');
-});
 
 ///////////////////////// test function client side //////////////////////////////////////
 socket.on('testout', function(out){

requirements.txt

@@ -1,3 +1,2 @@
-aiohttp
-python-socketio
+flask
 pyyaml

server.py

@@ -1,15 +1,21 @@
-from aiohttp import web
-import socketio
-import yaml
-import os
+from flask import Flask, send_from_directory, request
+from flask_socketio import SocketIO
 import glob
+import os
+import pty
 import re
+import select
+import subprocess
 import time
+import yaml
+# Error logging only
+import logging
+log = logging.getLogger('werkzeug')
+log.setLevel(logging.ERROR)
 
 # Websocket server
-sio = socketio.AsyncServer(async_mode='aiohttp')
-app = web.Application()
-sio.attach(app)
+app = Flask(__name__,static_folder="public")
+sio = SocketIO(app)
 
 
 
@@ -30,53 +36,52 @@ def build_list(extension):
   return all_files
 
 # Background job thread loop for file processing
-async def processor():
+def processor():
   while True:
     files = build_list('.mkv')
-    await sio.emit('testoutt', files)
-    await sio.sleep(5)
+    sio.emit('testout', files)
+    time.sleep(5)
 sio.start_background_task(processor)
 
 ################################
 #         Web Server           #
 ################################
 
-# Default returns for static files and index root
-async def index(request):
-  with open('./public/index.html') as f:
-    return web.Response(text=f.read(), content_type='text/html')
-app.router.add_get('/', index)
-app.router.add_static('/public/', path=str('./public/'))
+# Default index root
+static_file_dir = os.path.join(os.path.dirname(os.path.realpath(__file__)), 'public')
+@app.route("/")
+def index():
+  return send_from_directory(static_file_dir, 'index.html')
 
 # Send the current config to the user to render
 @sio.on('getconfig')
-async def config(sid):
+def config():
   with open("./config.yml", 'r') as stream:
     try:
       config = yaml.safe_load(stream)
-      await sio.emit('sendconfig', config, room=sid)
+      sio.emit('sendconfig', config, room=request.sid)
     except yaml.YAMLError as e:
       print(e)
 
 # Send the current command examples from github to the user to render
 @sio.on('getcommands')
-async def commands(sid):
+def commands():
   with open("./commands.yml", 'r') as stream:
     try:
       commands = yaml.safe_load(stream)
-      await sio.emit('sendcommands', commands, room=sid)
+      sio.emit('sendcommands', commands, room=request.sid)
     except yaml.YAMLError as e:
       print(e)
 
 # Main page for rendering processing history and current
 @sio.on('getmain')
-async def commands(sid):
+def commands():
   data = 'test'
-  await sio.emit('sendmain', data, room=sid)
+  sio.emit('sendmain', data, room=request.sid)
       
 # Save user set config
 @sio.on('saveconfig')
-async def commands(sid, data):
+def commands(data):
   with open("/config/config.yml", 'w') as configfile:
     try:
       yaml.dump(data, configfile)
@@ -88,16 +93,44 @@ async def commands(sid, data):
 #         User Terminal        #
 ################################
 
-# Terminal page rendering
-@sio.on('getterminal')
-async def commands(sid):
-  data = 'test'
-  await sio.emit('sendterminal', data, room=sid)
+# Globals
+app.config['term'] = None
+app.config['bash'] = None
 
+# Send terminal data from forked process
+def send_term():
+  while True:
+    # Sane delay on data sends
+    sio.sleep(0.01)
+    if app.config['term']:
+      timeout_sec = 0
+      (data_ready, _, _) = select.select([app.config['term']], [], [], timeout_sec)
+      if data_ready:
+        output = os.read(app.config['term'], 1024 * 20).decode()
+        sio.emit('sendterm', output)
+
+# Write user input to terminal
+@sio.on('termdata')
+def termdata(data):
+  if app.config['term']:
+    os.write(app.config['term'], data.encode())
+
+# The user requested a terminal
+@sio.on('giveterm')
+def giveterm():
+  if app.config['bash']:
+    return
+  (bash, term) = pty.fork()
+  if bash == 0:
+    subprocess.run('/bin/bash')
+  else:
+    app.config['term'] = term
+    app.config['bash'] = bash
+    sio.start_background_task(target=send_term)
 
 ################################
 #           App Run            #
 ################################
 
 if __name__ == '__main__':
-    web.run_app(app, port=8787)
+  sio.run(app, port=8787, host='0.0.0.0')