/usr/lib/ruby/1.8/vendor/etag.rb is in libramaze-ruby1.8 2010.06.18-2.
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 | require 'digest/md5'
module Rack
# Automatically sets the ETag header on all String bodies
class ETag
def initialize(app)
@app = app
end
def call(env)
status, headers, body = @app.call(env)
unless headers.key?('Etag')
hashes = []
body.each{|chunk| hashes << chunk.hash }
headers['Etag'] = %("#{Digest::MD5.hexdigest(hashes.join)}")
end
[status, headers, body]
end
end
end
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