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62 lines
1.4 KiB
Ruby
Executable file
62 lines
1.4 KiB
Ruby
Executable file
module Verification
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def self.verify(input)
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md5 = Digest::MD5.hexdigest("9WvcZ9hX" + input + "KF7L4luQ").upcase.split(//)
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chars = %w[A B C D E F]
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nums = []
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last_pos = md5[31].to_i
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result = ""
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(0..9).each do |i|
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pos = md5[i].to_i
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if pos == 0
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pos = last_pos**(i % 4)
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elsif (pos % 4) == 0
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pos = pos * last_pos + i
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elsif (pos % 3) == 0
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pos **= (i % 4)
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elsif pos.even?
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pos = pos * i + pos
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end
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pos = (pos > 31) ? (pos % 32) : pos
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cur_char = md5[31 - pos]
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cur_num = cur_char.to_i
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if nums.include? cur_num
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if cur_num == 0
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cur_char = chars[pos % 6]
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else
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cur_char = (pos % 10).to_s
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end
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cur_num = cur_char.to_i
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end
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nums << cur_num
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result << cur_char
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last_pos = pos
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end
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result
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end
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def self.uncrap(str)
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str.to_s.gsub(/[^A-Za-z0-9_\-]/, "")
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end
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def self.random_string(len)
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chars = ("a".."z").to_a + ("A".."Z").to_a + ("0".."9").to_a
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str = ""
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1.upto(len) do
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str << chars[rand(chars.size - 1)]
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end
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str
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end
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# TODO: rikki?
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# Returns true if params (or its keys if a hash) are a subset of filter
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def self.contain(params, filter)
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keys = (params.instance_of?(Array) ? params : params.keys).map { |k| k.to_sym }
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(keys - filter).empty?
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end
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end
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