import ipaddress, socket, requests, flask
from urllib.parse import urlparse
app = flask.Flask(__name__)
app.flag = '***CENSORED***'
def valid_ip(ip):
try:
result = ipaddress.ip_address(ip)
# Stay out of my private!
return result.is_global
except:
return False
def valid_fqdn(fqdn):
return valid_ip(socket.gethostbyname(fqdn))
def get(url, recursive_count=0):
r = requests.get(url, allow_redirects=False)
if 'location' in r.headers:
if recursive_count > 2:
return '🤔'
url = r.headers.get('location')
if valid_fqdn(urlparse(url).netloc) == False:
return '🤔'
return get(url, recursive_count + 1)
return r.text
@app.route('/admin-status')
def admin_status():
print('Remote Address:', flask.request.remote_addr)
if flask.request.remote_addr != '127.0.0.1':
return '🥺'
return app.flag
@app.route('/check-status')
def check_status():
url = flask.request.args.get('url', '')
if valid_fqdn(urlparse(url).netloc) == False:
return '🥺'
return get(url)
@app.route('/')
def index():
return '''
urlcheck v2
{{ d(status) }}
'''