Watch Black Hat's session API for changes.

bhwatch.py

#!/usr/bin/env python3
"""
BlackHat USA session watcher
 by Grant Hernandez.

Monitor sessions (briefings) to see when new ones are added.

Tested: Thu Jun  4 11:41:59 EDT 2020
"""
import requests
import time
import subprocess
import json
import os
from datetime import datetime

def get_sessions():
    res = requests.get('https://www.blackhat.com/us-20/briefings/schedule/sessions.json')
    return res.json()

def notify(text):
    # add some notifcation thing here
    #subprocess.call(["say", text]) # for macOS
    pass

def check_session(sdata):
    title = sdata["title"]
    ltitle = title.lower()

    # add some parameters to check if YOUR briefing was accepted
    if False:
        while True:
            print("\aACCEPTED!")
            notify("Accepted")
            time.sleep(5)

if os.access("watch.state", os.R_OK):
    with open("watch.state") as fp:
        last_data = json.load(fp)
else:
    last_data = get_sessions()
    with open("watch.state", "w") as fp:
        json.dump(last_data, fp)

print("%s: Got %d initial briefings" % (datetime.now(), len(last_data["sessions"])))

for sid, v in last_data["sessions"].items():
    print("%s: %s" % (v["published_date"], v["title"]))
    check_session(v)

print("Watching for new sessions...")
while True:
    try:
        data = get_sessions()
    except requests.exceptions.ConnectionError:
        print("Connection error. Trying again later")
        time.sleep(60)
        continue

    if last_data:
        last_sessions = last_data["sessions"]
        sessions = data["sessions"]

        sessions_now = set(sessions.keys())
        sessions_before = set(last_sessions.keys())

        if len(sessions_now) != len(sessions_before):
            with open("watch.state", "w") as fp:
                json.dump(data, fp)

            new_sessions = sessions_now - sessions_before
            print("\a%d NEW SESSIONS!" % (len(new_sessions)))
            notify("%d new sessions!" % len(new_sessions))

            for sid in new_sessions:
                sdata = sessions[sid]
                title = sdata["title"]
                ltitle = title.lower()

                print("%s: NEW SESSION: %s" % (datetime.now(), title))

                check_session(sdata)

    last_data = data
    time.sleep(60)