30 lines
679 B
Ruby
Executable File
30 lines
679 B
Ruby
Executable File
#!/usr/bin/env ruby
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require "digest"
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require "fileutils"
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require "io/console"
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require "securerandom"
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DATA_DIR = File.join(__dir__, "../data")
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USER_FILE = File.join(DATA_DIR, "user.txt")
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print "User name: "
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username = $stdin.gets.chomp
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unless username =~ /^[a-zA-Z0-9_]+$/
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$stderr.puts "Invalid characters in user name"
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exit(1)
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end
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print "Password: "
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password = $stdin.noecho(&:gets).chomp
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salt = SecureRandom.hex(8)
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input = salt + password
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hash = Digest::SHA256.hexdigest(input)
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hashhex = hash.chars.map {|c| sprintf("%02X", c.ord)}.join
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user_file_contents = "#{username}:#{salt}:#{hashhex}\n"
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File.binwrite(USER_FILE, user_file_contents)
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puts "User and password set"
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