import os
import subprocess
import sys
import threading
import time
from flask import Flask, Response


app = Flask(__name__)

@app.route('/', defaults={'path': ''})
@app.route('/<path:path>')
def handler(path):
    if path == 'favicon.ico':
        return Response(status=204)

    def run():
        try:
            proc = subprocess.Popen(
                map(lambda x: x.replace('{PATH}', path), sys.argv[2:]),
                stdout=subprocess.PIPE
            )
            for c in iter(lambda: proc.stdout.read(1), b''):
                yield c
        finally:
            proc.kill()

    return Response(run(), mimetype='text/plain')

def fixperms():
    time.sleep(0.05)
    os.chmod(sys.argv[1], 660)

threading.Thread(target=fixperms).start()
app.run(host='unix://' + sys.argv[1])