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Contents
# frozen_string_literal: true
module Blacklight::TokenBasedUser
extend ActiveSupport::Concern
included do
if respond_to? :helper_method
helper_method :encrypt_user_id
end
rescue_from Blacklight::Exceptions::ExpiredSessionToken do
head :unauthorized
end
end
private
def token_or_current_or_guest_user
token_user || current_or_guest_user
end
def token_user
@token_user ||= if params[:encrypted_user_id]
user_id = decrypt_user_id params[:encrypted_user_id]
User.find(user_id)
end
end
# Used for #export action, with encrypted user_id.
def decrypt_user_id(encrypted_user_id)
user_id, timestamp = message_encryptor.decrypt_and_verify(encrypted_user_id)
if timestamp < 1.hour.ago
raise Blacklight::Exceptions::ExpiredSessionToken
end
user_id
end
# Used for #export action with encrypted user_id, available
# as a helper method for views.
def encrypt_user_id(user_id, current_time = nil)
current_time ||= Time.zone.now
message_encryptor.encrypt_and_sign([user_id, current_time])
end
def export_secret_token
secret_key_generator.generate_key('encrypted user session key')[0..(key_len - 1)]
end
def secret_key_generator
@secret_key_generator ||= begin
app = Rails.application
secret_key_base = if app.respond_to?(:credentials)
# Rails 5.2+
app.credentials.secret_key_base
else
# Rails <= 5.1
app.secrets.secret_key_base
end
ActiveSupport::KeyGenerator.new(secret_key_base)
end
end
def message_encryptor
ActiveSupport::MessageEncryptor.new(export_secret_token)
end
# Ruby 2.4 requires keys of very particular lengths
def key_len
if ActiveSupport::MessageEncryptor.respond_to? :key_len
ActiveSupport::MessageEncryptor.key_len
else
0
end
end
end
Version data entries
68 entries across 68 versions & 1 rubygems