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heartcombo--devise/lib/devise/failure_app.rb
2011-04-29 14:11:47 +02:00

144 lines
4.2 KiB
Ruby

require "action_controller/metal"
module Devise
# Failure application that will be called every time :warden is thrown from
# any strategy or hook. Responsible for redirect the user to the sign in
# page based on current scope and mapping. If no scope is given, redirect
# to the default_url.
class FailureApp < ActionController::Metal
include ActionController::RackDelegation
include ActionController::UrlFor
include ActionController::Redirecting
include Rails.application.routes.url_helpers
include Devise::Controllers::SharedHelpers
delegate :flash, :to => :request
def self.call(env)
action(:respond).call(env)
end
def self.default_url_options(*args)
ApplicationController.default_url_options(*args)
end
def respond
if http_auth?
http_auth
elsif warden_options[:recall]
recall
else
redirect
end
end
def http_auth
self.status = 401
self.headers["WWW-Authenticate"] = %(Basic realm=#{Devise.http_authentication_realm.inspect}) if http_auth_header?
self.content_type = request.format.to_s
self.response_body = http_auth_body
end
def recall
env["PATH_INFO"] = attempted_path
flash.now[:alert] = i18n_message(:invalid)
self.response = recall_app(warden_options[:recall]).call(env)
end
def redirect
store_location!
flash[:alert] = i18n_message
redirect_to redirect_url
end
protected
def i18n_message(default = nil)
message = warden.message || warden_options[:message] || default || :unauthenticated
if message.is_a?(Symbol)
I18n.t(:"#{scope}.#{message}", :resource_name => scope,
:scope => "devise.failure", :default => [message, message.to_s])
else
message.to_s
end
end
def redirect_url
if skip_format?
send(:"new_#{scope}_session_path")
else
send(:"new_#{scope}_session_path", :format => request_format)
end
end
def skip_format?
%w(html */*).include? request_format.to_s
end
# Choose whether we should respond in a http authentication fashion,
# including 401 and optional headers.
#
# This method allows the user to explicitly disable http authentication
# on ajax requests in case they want to redirect on failures instead of
# handling the errors on their own. This is useful in case your ajax API
# is the same as your public API and uses a format like JSON (so you
# cannot mark JSON as a navigational format).
def http_auth?
if request.xhr?
Devise.http_authenticatable_on_xhr
else
!(request_format && is_navigational_format?)
end
end
# It does not make sense to send authenticate headers in ajax requests
# or if the user disabled them.
def http_auth_header?
Devise.mappings[scope].to.http_authenticatable && !request.xhr?
end
def http_auth_body
return i18n_message unless request_format
method = "to_#{request_format}"
if method == "to_xml"
{ :error => i18n_message }.to_xml(:root => "errors")
elsif {}.respond_to?(method)
{ :error => i18n_message }.send(method)
else
i18n_message
end
end
def recall_app(app)
controller, action = app.split("#")
controller_name = ActiveSupport::Inflector.camelize(controller)
controller_klass = ActiveSupport::Inflector.constantize("#{controller_name}Controller")
controller_klass.action(action)
end
def warden
env['warden']
end
def warden_options
env['warden.options']
end
def scope
@scope ||= warden_options[:scope] || Devise.default_scope
end
def attempted_path
warden_options[:attempted_path]
end
# Stores requested uri to redirect the user after signing in. We cannot use
# scoped session provided by warden here, since the user is not authenticated
# yet, but we still need to store the uri based on scope, so different scopes
# would never use the same uri to redirect.
def store_location!
session["#{scope}_return_to"] = attempted_path if request.get? && !http_auth?
end
end
end