Top Level Namespace

Defined Under Namespace

Modules: Dry Classes: Hash

Constant Summary collapse

APR1_MAGIC = 
'$apr1$'
ITOA64 = 
"./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"

Instance Method Summary collapse

Instance Method Details

#apr1_check(password, hashed_password) ⇒ Object 



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# File 'lib/dry-stack/apache_specific_md5.rb', line 53

def apr1_check(password, hashed_password)
  parts = hashed_password.split('$')
  return false if parts.length != 4 || parts[1] != 'apr1'

  salt = parts[2]
  apr1_crypt(password, salt) == hashed_password
end

#apr1_crypt(password, salt) ⇒ Object 



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# File 'lib/dry-stack/apache_specific_md5.rb', line 15

def apr1_crypt(password, salt)
  salt = salt[0, 8]
  ctx = Digest::MD5.new
  ctx.update(password + APR1_MAGIC + salt)
  final = Digest::MD5.digest(password + salt + password)

  password.length.times { |i| ctx.update(final[i % 16].chr) }

  length = password.length
  while length > 0
    ctx.update(length & 1 != 0 ? "\0" : password[0].chr)
    length >>= 1
  end

  final = ctx.digest

  1000.times do |i|
    ctx = Digest::MD5.new
    ctx.update(i & 1 != 0 ? password : final)
    ctx.update(salt) unless (i % 3).zero?
    ctx.update(password) unless (i % 7).zero?
    ctx.update(i & 1 != 0 ? final : password)
    final = ctx.digest
  end

  hashed = final.bytes
  result = [
    to64((hashed[0] << 16) | (hashed[6] << 8) | hashed[12], 4),
    to64((hashed[1] << 16) | (hashed[7] << 8) | hashed[13], 4),
    to64((hashed[2] << 16) | (hashed[8] << 8) | hashed[14], 4),
    to64((hashed[3] << 16) | (hashed[9] << 8) | hashed[15], 4),
    to64((hashed[4] << 16) | (hashed[10] << 8) | hashed[5], 4),
    to64(hashed[11], 2)
  ].join

  "#{APR1_MAGIC}#{salt}$#{result}"
end

#exec_i(cmd, input_string = nil) ⇒ Object 



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# File 'lib/dry-stack/command_line.rb', line 4

def exec_i(cmd, input_string = nil)
  puts "exec_i(inputs.size #{input_string&.size}): #{cmd}"
  Open3.popen3(cmd) do |i, o, e, wait_thr|
    i.puts input_string unless input_string.nil?
    i.close
    while line = o.gets; puts "o: " + line end
    while line = e.gets; puts "o: " + line end
    return_value = wait_thr.value
    puts "Error level was: #{return_value.exitstatus}" unless return_value.success?
    exit return_value.exitstatus unless return_value.success?
  end
end

#exec_o_lines(cmd) ⇒ Object 



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# File 'lib/dry-stack/command_line.rb', line 17

def exec_o_lines(cmd,&)
  IO.popen(cmd, 'r') do |f|
    f.each_line do |line|
      yield line
    end
  end
end

#to64(value, length) ⇒ Object 



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# File 'lib/dry-stack/apache_specific_md5.rb', line 6

def to64(value, length)
  result = ''
  length.times do
    result << ITOA64[value & 0x3f]
    value >>= 6
  end
  result
end