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class Dnsbl |
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PROVIDER = '.in.dnsbl.org' |
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@dns = Resolv::DNS.new |
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def self.include?(domain_name) |
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query(domain_name) != nil |
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end |
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def self.query(domain_name) |
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@dns.getresource(domain_name + PROVIDER, Resolv::DNS::Resource::IN::A) |
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rescue Resolv::ResolvError |
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nil |
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end |
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end |
