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require 'rack/utils'
require 'rack/request'
require 'rack/session/abstract/id'
require 'action_dispatch/middleware/cookies'
require 'active_support/core_ext/object/blank'
module ActionDispatch
module Session
class SessionRestoreError < StandardError #:nodoc:
attr_reader :original_exception
def initialize(const_error)
@original_exception = const_error
super("Session contains objects whose class definition isn't available.\n" +
"Remember to require the classes for all objects kept in the session.\n" +
"(Original exception: #{const_error.message} [#{const_error.class}])\n")
end
end
module DestroyableSession
def destroy
clear
options = @env[Rack::Session::Abstract::ENV_SESSION_OPTIONS_KEY] if @env
options ||= {}
@by.send(:destroy_session, @env, options[:id], options) if @by
options[:id] = nil
@loaded = false
end
end
::Rack::Session::Abstract::SessionHash.send :include, DestroyableSession
module Compatibility
def initialize(app, options = {})
options[:key] ||= '_session_id'
super
end
def generate_sid
sid = SecureRandom.hex(16)
sid.encode!('UTF-8')
sid
end
protected
def initialize_sid
@default_options.delete(:sidbits)
@default_options.delete(:secure_random)
end
end
module StaleSessionCheck
def load_session(env)
stale_session_check! { super }
end
def extract_session_id(env)
stale_session_check! { super }
end
def stale_session_check!
yield
rescue ArgumentError => argument_error
if argument_error.message =~ %r{undefined class/module ([\w:]*\w)}
begin
# Note that the regexp does not allow $1 to end with a ':'
$1.constantize
rescue LoadError, NameError => e
raise ActionDispatch::Session::SessionRestoreError, e, e.backtrace
end
retry
else
raise
end
end
end
class AbstractStore < Rack::Session::Abstract::ID
include Compatibility
include StaleSessionCheck
private
def set_cookie(env, session_id, cookie)
request = ActionDispatch::Request.new(env)
request.cookie_jar[key] = cookie
end
end
end
end
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