cloudflare-gateway-adblocking/zerotrust_adblock/utils.py

56 lines
2.3 KiB
Python

import pathlib
import os
import requests
from dotenv import load_dotenv
# List Utils
# Convert a hosts file to a simple hostname list
def convert_to_list(file:pathlib.Path) -> list:
with open(file, 'r') as f:
# Don't read commented lines; strip whitespace; remove 127.0.0.1 from beginning of line; ignore lines with "localhost"; ignore lines with "::1"; ignore newlines blocklists.extend([i[10:].strip() for i in f.readlines() if not i.startswith('#') and 'localhost' not in i and '::1' not in i])
hosts = ([i[10:].strip() for i in f.readlines() if not i.startswith('#') and 'localhost' not in i and '::1' not in i])
# Equivalent to:
# for x in f.readlines():
# if not x.startswith('#') and 'localhost' not in x and '::1' not in x:
# hosts.append(x[10:].strip())
# If there are any empty strings in the list, remove them since for some reason, whitespace is stil in the list
hosts = [i for i in hosts if i != '']
return hosts
# General Utils
# Load environment variables
def load_env() -> dict:
load_dotenv(".env")
if not os.environ.get('CLOUDFLARE_TOKEN') and not os.environ.get('CLOUDFLARE_ACCOUNT_ID'):
load_dotenv(".envrc")
if not os.environ.get('CLOUDFLARE_TOKEN') or not os.environ.get('CLOUDFLARE_ACCOUNT_ID'):
print('No environment variables found. Please create a .env file or .envrc file')
exit()
else:
return {"CLOUDFLARE_TOKEN": os.environ.get('CLOUDFLARE_TOKEN'), "CLOUDFLARE_ACCOUNT_ID": os.environ.get('CLOUDFLARE_ACCOUNT_ID')}
def get_lists() -> dict:
url = f'https://api.cloudflare.com/client/v4/accounts/{ACCOUNT_ID}/gateway/lists'
headers = {
'Authorization': f'Bearer {TOKEN}',
"Content-Type": "application/json",
}
response = requests.get(url, headers=headers)
if response.status_code != 200:
print(f'Error getting lists: {response.text}')
return response.json()['result']
def filter_adblock_lists(lists: dict) -> dict:
adblock_lists = []
for lst in lists:
if lst['name'].startswith('adblock-list') and lst['type'] == 'DOMAIN':
adblock_lists.append(lst)
return adblock_lists
TOKEN = load_env()['CLOUDFLARE_TOKEN']
ACCOUNT_ID = load_env()['CLOUDFLARE_ACCOUNT_ID']