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Preserve generated zone TTL directive #46

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Preserve generated zone TTL directive #46

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17 changes: 16 additions & 1 deletion update-zonefile.py
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Original file line number Diff line number Diff line change
Expand Up @@ -60,6 +60,17 @@
regex_domain = '^(127|0)\\.0\\.0\\.(0|1)[\\s\\t]+(?P<domain>([a-z0-9\\-_]+\\.)+[a-z][a-z0-9_-]*)$'
regex_no_comment = '^#.*|^$'
regex_no_comment_in_line = '^([^#]+)'
default_zone_ttl = 3600


def add_default_ttl(zonefile):
path = Path(zonefile)
zone_text = path.read_text()

if zone_text.startswith('$TTL'):
return

path.write_text('$TTL {}\n{}'.format(default_zone_ttl, zone_text))

def download_list(url):
headers = None
Expand Down Expand Up @@ -170,7 +181,10 @@ def load_zone(zonefile, origin, raw):

if not path.exists():
with tmpPath.open('w') as f:
f.write('@ 3600 IN SOA @ admin.{}. 0 86400 7200 2592000 86400\n@ 3600 IN NS LOCALHOST.'.format(origin))
f.write(
'$TTL {}\n'
'@ 3600 IN SOA @ admin.{}. 0 86400 7200 2592000 86400\n'
'@ 3600 IN NS LOCALHOST.'.format(default_zone_ttl, origin))

save_zone(tmpPath, zonefile, origin, raw)

Expand Down Expand Up @@ -290,6 +304,7 @@ def append_domain_to_zonefile(file, domain):

tmpzonefile = Path(config['cache'], 'tempzone')
zone.to_file(str(tmpzonefile))
add_default_ttl(tmpzonefile)

with tmpzonefile.open('a') as f:
for d in (sorted(domains)):
Expand Down