raw.txt
No One
Actions

Authored By

	Volans
	Aug 7 2020, 11:15 AM

Size

1 KB

Referenced Files

None

Subscribers

None

raw.txt
View Options

	>>> import ipaddress
	>>>
	>>> from time import sleep
	>>>
	>>> from dns import resolver
	>>>
	>>> ips = IPAddress.objects.filter(status='active', dns_name='')
	>>> print(f'Found {len(ips)} IPs')
	Found 523 IPs
	>>> dns_resolver = resolver.Resolver()
	>>>
	>>>
	>>> def resolve_ptr(ip):
	... targets = []
	... try:
	... rr = dns_resolver.query(ipaddress.ip_interface(ip).ip.reverse_pointer, 'PTR')
	... except resolver.NXDOMAIN:
	... print(f'No records for {ip}, skipping')
	... return []
	... except resolver.NoNameservers:
	... print(f'No reply for {ip}, not in our space?')
	... return []
	... for rdata in rr:
	... target = rdata.target.to_text()
	... if target[-1] != '.':
	... print(f'Skipping relative name {target}')
	... continue
	... targets.append(target[:-1])
	... if len(targets) != 1:
	... print(f'ERROR: Found {len(targets)} names for {ip}, skipping: {targets}')
	... return []
	... return targets
	...
	>>> for ip in ips:
	... if ip.device.device_role.slug == 'server':
	... print(f'Skipping ip {ip}')
	... continue
	... targets = resolve_ptr(ip)
	... if targets:
	... #ip.dns_name = targets[0]
	... #ip.save()
	... print(f'Set DNS name for {ip} to {targets[0]}')
	... sleep(0.2)
	...