/usr/lib/ruby/1.8/digest.rb is in libruby1.8 1.8.7.352-2ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 | require 'digest.so'
module Digest
def self.const_missing(name)
case name
when :SHA256, :SHA384, :SHA512
lib = 'digest/sha2.so'
else
lib = File.join('digest', name.to_s.downcase)
end
begin
require lib
rescue LoadError => e
raise LoadError, "library not found for class Digest::#{name} -- #{lib}", caller(1)
end
unless Digest.const_defined?(name)
raise NameError, "uninitialized constant Digest::#{name}", caller(1)
end
Digest.const_get(name)
end
class ::Digest::Class
# creates a digest object and reads a given file, _name_.
#
# p Digest::SHA256.file("X11R6.8.2-src.tar.bz2").hexdigest
# # => "f02e3c85572dc9ad7cb77c2a638e3be24cc1b5bea9fdbb0b0299c9668475c534"
def self.file(name)
new.file(name)
end
end
module Instance
# updates the digest with the contents of a given file _name_ and
# returns self.
def file(name)
File.open(name, "rb") {|f|
buf = ""
while f.read(16384, buf)
update buf
end
}
self
end
end
end
def Digest(name)
Digest.const_get(name)
end
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