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Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
15 lines
274 B
15 lines
274 B
8 years ago
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blacklist = ARGF.read.split("\n").map {|line| Range.new(*line.split(?-).map(&:to_i)) }
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ip = 0
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count = 0
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until ip > 4294967295
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range = blacklist.find {|range| range.cover?(ip) }
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if range.nil?
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count += 1
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ip += 1
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else
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ip = range.end + 1
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end
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end
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puts count
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