Uses LANcache DNS lists to create a DNSmasq compatible config file to redirect DNS queries to an existing LANcache server

lancache.py

## LANcache server IP
cache_ip = '192.168.0.1'

## DNSmasq output file (don't overwrite main config)
## Add "conf-file=/etc/dnsmasq.lancache" to the bottom of /etc/dnsmasq.conf to activate
output_file = '/etc/dnsmasq.lancache'

###
import requests
import os
import datetime

script_path = os.path.abspath(__file__)

with open(output_file, 'w') as out:
    out.write('## This file is automatically generated by ' + script_path + '\n')
    out.write('## Last updated ' + str(datetime.datetime.now()) + '\n')
    out.write('address=/cache/' + cache_ip + '\n')

    repo_info = requests.get('https://raw.githubusercontent.com/uklans/cache-domains/refs/heads/master/cache_domains.json')
    repo_info_json = repo_info.json()
    for domain in repo_info_json['cache_domains']:
        name = str(domain['name'])
        description = str(domain['description'])
        file_list = domain['domain_files']
        dns_list = []
        for fname in file_list:
            if fname == '': continue
            dns_info = requests.get('https://raw.githubusercontent.com/uklans/cache-domains/refs/heads/master/' + fname)
            for line in dns_info.text.split('\n'):
                if line == '': continue
                if line[:1] == '#': continue
                dns_list.append(line)
        
        print('Repository: ' + name)
        print('Description: ' + description)
        print('DNS entries: ' + str(dns_list))
        
        out.write('\n## ' + name + ' - ' + description + '\n')
        for name in dns_list:
            if name[:1] == '*':
                out.write('cname=' + name + ',cache\n')
            else:
                out.write('address=/' + name + '/' + cache_ip + '\n')