139 lines
4.8 KiB
Python
139 lines
4.8 KiB
Python
import os
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import pynetbox
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import requests
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from requests.auth import HTTPBasicAuth
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def main():
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# Instantiate connection to the Netbox API
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nb_api = pynetbox.api(
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url=os.environ['NB_API_URL'],
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token=os.environ['NB_API_TOKEN'],
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)
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# First, built the host overrides using Netbox as source
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nb_host_overrides = {}
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for nb_ip_address in nb_api.ipam.ip_addresses.all():
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if nb_ip_address.dns_name is None or nb_ip_address.dns_name == '':
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continue
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host = nb_ip_address.dns_name.split('.')[0]
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nb_host_overrides[nb_ip_address.dns_name] = {
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'host': host,
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'domain': nb_ip_address.dns_name.replace(f'{host}.', ''),
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'ip': [
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nb_ip_address.address.split('/')[0],
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],
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'descr': '[pfsense-netbox-sync]',
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'aliases': None,
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}
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# Then fetch the actual host overrides from pfSense API
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r = requests.get(
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f'{os.environ["PF_API_URL"]}/api/v2/services/dns_resolver/host_overrides',
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auth=HTTPBasicAuth(os.environ['PF_API_USER'], os.environ['PF_API_PASS']),
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verify=False,
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)
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if r.status_code != 200:
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print(f'Error while requesting host overrides from pfSense ({r.status_code})')
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exit(1)
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pf_host_overrides = {}
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for pf_host_override in r.json()['data']:
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# Only track the entry the script have created
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if pf_host_override['descr'] != '[pfsense-netbox-sync]':
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continue
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pf_host_overrides[pf_host_override['host'] + '.' + pf_host_override['domain']] = pf_host_override
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new_host_overrides = []
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changed_host_overrides = []
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deleted_host_overrides = []
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for (host, nb_host_override) in nb_host_overrides.items():
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if host not in pf_host_overrides:
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new_host_overrides.append(nb_host_override)
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elif nb_host_override['ip'] != pf_host_overrides[host]['ip']:
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changed_host_overrides.append(nb_host_override)
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for (host, pf_host_override) in pf_host_overrides.items():
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if host not in nb_host_overrides:
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deleted_host_overrides.append(pf_host_override)
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print(f'{len(new_host_overrides)} new host overrides')
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print(f'{len(changed_host_overrides)} changed host overrides')
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print(f'{len(deleted_host_overrides)} deleted host overrides')
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if len(new_host_overrides) == 0 and len(changed_host_overrides) == 0 and len(deleted_host_overrides) == 0:
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print('no changes detected.')
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exit(0)
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print()
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# First process the new host overrides
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for host_override in new_host_overrides:
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print(f'[+] {host_override["host"]}.{host_override["domain"]} {host_override["ip"]}')
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r = requests.post(
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f'{os.environ["PF_API_URL"]}/api/v2/services/dns_resolver/host_override',
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auth=HTTPBasicAuth(os.environ['PF_API_USER'], os.environ['PF_API_PASS']),
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verify=False,
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json=host_override,
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)
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if r.status_code != 200:
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print(f'Error while creating host override ({r.status_code})')
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exit(1)
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# Then process the changed host overrides
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for host_override in changed_host_overrides:
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pf_host_override = pf_host_overrides[host_override['host'] + '.' + host_override['domain']]
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print(
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f'[*] {host_override["host"]}.{host_override["domain"]} {pf_host_override["ip"]} -> {host_override["ip"]}'
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)
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host_override['id'] = pf_host_override['id']
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r = requests.patch(
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f'{os.environ["PF_API_URL"]}/api/v2/services/dns_resolver/host_override',
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auth=HTTPBasicAuth(os.environ['PF_API_USER'], os.environ['PF_API_PASS']),
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verify=False,
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json=host_override,
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)
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if r.status_code != 200:
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print(f'Error while updating host override ({r.status_code})')
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exit(1)
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# Finally process the deleted host overrides
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for host_override in deleted_host_overrides:
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print(f'[-] {host_override["host"]}.{host_override["domain"]} {host_override["ip"]}')
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r = requests.delete(
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f'{os.environ["PF_API_URL"]}/api/v2/services/dns_resolver/host_override?id={host_override["id"]}',
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auth=HTTPBasicAuth(os.environ['PF_API_USER'], os.environ['PF_API_PASS']),
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verify=False,
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)
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if r.status_code != 200:
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print(f'Error while deleting host override ({r.status_code})')
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exit(1)
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# Finally restart the DNS resolver
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r = requests.post(
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f'{os.environ["PF_API_URL"]}/api/v2/services/dns_resolver/apply',
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auth=HTTPBasicAuth(os.environ['PF_API_USER'], os.environ['PF_API_PASS']),
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verify=False,
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)
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if r.status_code != 200:
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print(f'Error while restarting DNS resolver ({r.status_code})')
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exit(1)
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if __name__ == '__main__':
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main()
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