require 'base64' module ActionController module HttpAuthentication # Makes it dead easy to do HTTP Basic authentication. # # Simple Basic example: # # class PostsController < ApplicationController # USER_NAME, PASSWORD = "dhh", "secret" # # before_filter :authenticate, :except => [ :index ] # # def index # render :text => "Everyone can see me!" # end # # def edit # render :text => "I'm only accessible if you know the password" # end # # private # def authenticate # authenticate_or_request_with_http_basic do |user_name, password| # user_name == USER_NAME && password == PASSWORD # end # end # end # # # Here is a more advanced Basic example where only Atom feeds and the XML API is protected by HTTP authentication, # the regular HTML interface is protected by a session approach: # # class ApplicationController < ActionController::Base # before_filter :set_account, :authenticate # # protected # def set_account # @account = Account.find_by_url_name(request.subdomains.first) # end # # def authenticate # case request.format # when Mime::XML, Mime::ATOM # if user = authenticate_with_http_basic { |u, p| @account.users.authenticate(u, p) } # @current_user = user # else # request_http_basic_authentication # end # else # if session_authenticated? # @current_user = @account.users.find(session[:authenticated][:user_id]) # else # redirect_to(login_url) and return false # end # end # end # end # # # In your integration tests, you can do something like this: # # def test_access_granted_from_xml # get( # "/notes/1.xml", nil, # :authorization => ActionController::HttpAuthentication::Basic.encode_credentials(users(:dhh).name, users(:dhh).password) # ) # # assert_equal 200, status # end # # # On shared hosts, Apache sometimes doesn't pass authentication headers to # FCGI instances. If your environment matches this description and you cannot # authenticate, try this rule in public/.htaccess (replace the plain one): # # RewriteRule ^(.*)$ dispatch.fcgi [E=X-HTTP_AUTHORIZATION:%{HTTP:Authorization},QSA,L] module Basic extend self module ControllerMethods def authenticate_or_request_with_http_basic(realm = "Application", &login_procedure) authenticate_with_http_basic(&login_procedure) || request_http_basic_authentication(realm) end def authenticate_with_http_basic(&login_procedure) HttpAuthentication::Basic.authenticate(self, &login_procedure) end def request_http_basic_authentication(realm = "Application") HttpAuthentication::Basic.authentication_request(self, realm) end end def authenticate(controller, &login_procedure) unless authorization(controller.request).blank? login_procedure.call(*user_name_and_password(controller.request)) end end def user_name_and_password(request) decode_credentials(request).split(/:/, 2) end def authorization(request) request.env['HTTP_AUTHORIZATION'] || request.env['X-HTTP_AUTHORIZATION'] || request.env['X_HTTP_AUTHORIZATION'] || request.env['REDIRECT_X_HTTP_AUTHORIZATION'] end def decode_credentials(request) Base64.decode64(authorization(request).split.last || '') end def encode_credentials(user_name, password) "Basic #{Base64.encode64("#{user_name}:#{password}")}" end def authentication_request(controller, realm) controller.headers["WWW-Authenticate"] = %(Basic realm="#{realm.gsub(/"/, "")}") controller.send! :render, :text => "HTTP Basic: Access denied.\n", :status => :unauthorized end end end end