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40 lines
983 B
Python
40 lines
983 B
Python
#!/usr/bin/env python3
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from pathlib import Path
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import sys
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class DnsRootNoParentError(Exception):
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pass
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def get_dns_parent(domain):
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s = domain.split('.', 1)
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if len(s) < 2:
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raise DnsRootNoParentError()
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return domain.split('.', 1)[1]
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def find_dns_zone(map_dir, domain):
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dns_file = Path(map_dir) / domain
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if dns_file.exists():
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return domain
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else:
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return find_dns_zone(map_dir, get_dns_parent(domain))
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def main():
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dns_map_dir = Path(sys.argv[0]).parent / "dns"
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if len(sys.argv) >= 1:
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domains = sys.argv[1:]
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else:
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domains = []
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for domain in sys.stdin:
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domains.append(domain.strip())
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for domain in domains:
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domain = domain.strip('.')
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try:
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print(find_dns_zone(dns_map_dir, domain))
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except DnsRootNoParentError:
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print(f'No dns zone found for "{domain}"', file=sys.stderr)
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sys.exit(1)
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if __name__ == "__main__":
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main()
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