Gecko [ www.foryou-vip.com ]

Name	Size	Permission	Date
auth	[ DIR ]	drwxrwxrwx	2020-08-24 23:49
backports	[ DIR ]	drwxrwxrwx	2020-08-24 23:49
handler	[ DIR ]	drwxrwxrwx	2020-08-24 23:49
multipart	[ DIR ]	drwxrwxrwx	2020-08-24 23:49
session	[ DIR ]	drwxrwxrwx	2020-08-24 23:49
utils	[ DIR ]	drwxrwxrwx	2020-08-24 23:49
body_proxy.rb	958 B	-rwxrwxrwx	2020-07-10 13:18
builder.rb	4.27 KB	-rwxrwxrwx	2020-07-10 13:18
cascade.rb	1.34 KB	-rwxrwxrwx	2020-07-10 13:18
chunked.rb	1.58 KB	-rwxrwxrwx	2020-07-10 13:18
commonlogger.rb	2.28 KB	-rwxrwxrwx	2020-07-10 13:18
conditionalget.rb	2.5 KB	-rwxrwxrwx	2020-07-10 13:18
config.rb	379 B	-rwxrwxrwx	2020-07-10 13:18
content_length.rb	840 B	-rwxrwxrwx	2020-07-10 13:18
content_type.rb	670 B	-rwxrwxrwx	2020-07-10 13:18
deflater.rb	4.57 KB	-rwxrwxrwx	2020-07-10 13:18
directory.rb	4.24 KB	-rwxrwxrwx	2020-07-10 13:18
etag.rb	2.11 KB	-rwxrwxrwx	2020-07-10 13:18
file.rb	4.09 KB	-rwxrwxrwx	2020-07-10 13:18
handler.rb	3.25 KB	-rwxrwxrwx	2020-07-10 13:18
head.rb	484 B	-rwxrwxrwx	2020-07-10 13:18
lint.rb	29.26 KB	-rwxrwxrwx	2020-07-10 13:18
lobster.rb	1.97 KB	-rwxrwxrwx	2020-07-10 13:18
lock.rb	601 B	-rwxrwxrwx	2020-07-10 13:18
logger.rb	357 B	-rwxrwxrwx	2020-07-10 13:18
methodoverride.rb	1.01 KB	-rwxrwxrwx	2020-07-10 13:18
mime.rb	30.94 KB	-rwxrwxrwx	2020-07-10 13:18
mock.rb	5.68 KB	-rwxrwxrwx	2020-07-10 13:18
multipart.rb	1.14 KB	-rwxrwxrwx	2020-07-10 13:18
nulllogger.rb	951 B	-rwxrwxrwx	2020-07-10 13:18
recursive.rb	1.73 KB	-rwxrwxrwx	2020-07-10 13:18
reloader.rb	2.97 KB	-rwxrwxrwx	2020-07-10 13:18
request.rb	12.88 KB	-rwxrwxrwx	2020-07-10 13:18
response.rb	4.33 KB	-rwxrwxrwx	2020-07-10 13:18
rewindable_input.rb	3.19 KB	-rwxrwxrwx	2020-07-10 13:18
runtime.rb	961 B	-rwxrwxrwx	2020-07-10 13:18
sendfile.rb	5.18 KB	-rwxrwxrwx	2020-07-10 13:18
server.rb	10.8 KB	-rwxrwxrwx	2020-07-10 13:18
showexceptions.rb	11.7 KB	-rwxrwxrwx	2020-07-10 13:18
showstatus.rb	3.46 KB	-rwxrwxrwx	2020-07-10 13:18
static.rb	4.88 KB	-rwxrwxrwx	2020-07-10 13:18
tempfile_reaper.rb	670 B	-rwxrwxrwx	2020-07-10 13:18
urlmap.rb	2.46 KB	-rwxrwxrwx	2020-07-10 13:18
utils.rb	20.86 KB	-rwxrwxrwx	2020-07-10 13:18

Rename

require 'rack/utils'

module Rack

# Middleware that enables conditional GET using If-None-Match and
  # If-Modified-Since. The application should set either or both of the
  # Last-Modified or Etag response headers according to RFC 2616. When
  # either of the conditions is met, the response body is set to be zero
  # length and the response status is set to 304 Not Modified.
  #
  # Applications that defer response body generation until the body's each
  # message is received will avoid response body generation completely when
  # a conditional GET matches.
  #
  # Adapted from Michael Klishin's Merb implementation:
  # https://github.com/wycats/merb/blob/master/merb-core/lib/merb-core/rack/middleware/conditional_get.rb
  class ConditionalGet
    def initialize(app)
      @app = app
    end

def call(env)
      case env[REQUEST_METHOD]
      when "GET", "HEAD"
        status, headers, body = @app.call(env)
        headers = Utils::HeaderHash.new(headers)
        if status == 200 && fresh?(env, headers)
          status = 304
          headers.delete(CONTENT_TYPE)
          headers.delete(CONTENT_LENGTH)
          original_body = body
          body = Rack::BodyProxy.new([]) do
            original_body.close if original_body.respond_to?(:close)
          end
        end
        [status, headers, body]
      else
        @app.call(env)
      end
    end

private

def fresh?(env, headers)
      modified_since = env['HTTP_IF_MODIFIED_SINCE']
      none_match     = env['HTTP_IF_NONE_MATCH']

return false unless modified_since || none_match

success = true
      success &&= modified_since?(to_rfc2822(modified_since), headers) if modified_since
      success &&= etag_matches?(none_match, headers) if none_match
      success
    end

def etag_matches?(none_match, headers)
      etag = headers['ETag'] and etag == none_match
    end

def modified_since?(modified_since, headers)
      last_modified = to_rfc2822(headers['Last-Modified']) and
        modified_since and
        modified_since >= last_modified
    end

def to_rfc2822(since)
      # shortest possible valid date is the obsolete: 1 Nov 97 09:55 A
      # anything shorter is invalid, this avoids exceptions for common cases
      # most common being the empty string
      if since && since.length >= 16
        # NOTE: there is no trivial way to write this in a non execption way
        #   _rfc2822 returns a hash but is not that usable
        Time.rfc2822(since) rescue nil
      else
        nil
      end
    end
  end
end