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failure_app.rb
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failure_app.rb
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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 Rails.application.routes.mounted_helpers
include Devise::Controllers::StoreLocation
delegate :flash, :to => :request
def self.call(env)
@respond ||= action(:respond)
@respond.call(env)
end
def self.default_url_options(*args)
if defined?(ApplicationController)
ApplicationController.default_url_options(*args)
else
{}
end
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!
if flash[:timedout] && flash[:alert]
flash.keep(:timedout)
flash.keep(:alert)
else
flash[:alert] = i18n_message
end
redirect_to redirect_url
end
protected
def i18n_options(options)
options
end
def i18n_message(default = nil)
message = warden_message || default || :unauthenticated
if message.is_a?(Symbol)
options = {}
options[:resource_name] = scope
options[:scope] = "devise.failure"
options[:default] = [message]
options = i18n_options(options)
I18n.t(:"#{scope}.#{message}", options)
else
message.to_s
end
end
def redirect_url
if warden_message == :timeout
flash[:timedout] = true
path = if request.get?
attempted_path
else
request.referrer
end
path || scope_path
else
scope_path
end
end
def scope_path
opts = {}
route = :"new_#{scope}_session_path"
opts[:format] = request_format unless skip_format?
config = Rails.application.config
opts[:script_name] = (config.relative_url_root if config.respond_to?(:relative_url_root))
context = send(Devise.available_router_name)
if context.respond_to?(route)
context.send(route, opts)
elsif respond_to?(:root_path)
root_path(opts)
else
"/"
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 warden_message
@message ||= warden.message || warden_options[:message]
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!
store_location_for(scope, attempted_path) if request.get? && !http_auth?
end
def is_navigational_format?
Devise.navigational_formats.include?(request_format)
end
def request_format
@request_format ||= request.format.try(:ref)
end
end
end