1 module AuthenticatedSystem
3 # Returns true or false if the user is logged in.
4 # Preloads @current_user with the user model if they're logged in.
6 (@current_user ||= session[:user_id] ? User.find_by_id(session[:user_id]) : :false).is_a?(User)
9 # Accesses the current user from the session.
11 @current_user if logged_in?
14 # Store the given user in the session.
15 def current_user=(new_user)
16 session[:user] = new_user
17 session[:user_id] = new_user.nil? ? nil : new_user.id
18 @current_user = new_user
21 # Check if the user is authorized.
23 # Override this method in your controllers if you want to restrict access
24 # to only a few actions or if you want to check if the user
25 # has the correct rights.
29 # # only allow nonbobs
31 # current_user.login != "bob"
37 # Filter method to enforce a login requirement.
39 # To require logins for all actions, use this in your controllers:
41 # before_filter :login_required
43 # To require logins for specific actions, use this in your controllers:
45 # before_filter :login_required, :only => [ :edit, :update ]
47 # To skip this in a subclassed controller:
49 # skip_before_filter :login_required
52 username, passwd = get_auth_data
53 self.current_user ||= User.authenticate(username, passwd) || :false if username && passwd
54 logged_in? && authorized? ? true : access_denied
57 # Redirect as appropriate when an access request fails.
59 # The default action is to redirect to the login screen.
61 # Override this method in your controllers if you want to have special
62 # behavior in case the user is not authorized
63 # to access the requested action. For example, a popup window might
64 # simply close itself.
66 respond_to do |accepts|
69 redirect_to :controller => '/account', :action => 'login'
72 headers["Status"] = "Unauthorized"
73 headers["WWW-Authenticate"] = %(Basic realm="Web Password")
74 render :text => "Could't authenticate you", :status => '401 Unauthorized'
80 # Store the URI of the current request in the session.
82 # We can return to this location by calling #redirect_back_or_default.
84 session[:return_to] = request.request_uri
87 # Redirect to the URI stored by the most recent store_location call or
88 # to the passed default.
89 def redirect_back_or_default(default)
90 session[:return_to] ? redirect_to_url(session[:return_to]) : redirect_to(default)
91 session[:return_to] = nil
94 # Inclusion hook to make #current_user and #logged_in?
95 # available as ActionView helper methods.
96 def self.included(base)
97 base.send :helper_method, :current_user, :logged_in?
100 # When called with before_filter :login_from_cookie will check for an :auth_token
101 # cookie and log the user back in if apropriate
102 def login_from_cookie
103 return unless cookies[:auth_token] && !logged_in?
104 user = User.find_by_remember_token(cookies[:auth_token])
105 if user && user.remember_token?
107 self.current_user = user
108 cookies[:auth_token] = { :value => self.current_user.remember_token , :expires => self.current_user.remember_token_expires_at }
109 flash[:notice] = "Logged in successfully"
114 @@http_auth_headers = %w(X-HTTP_AUTHORIZATION HTTP_AUTHORIZATION Authorization)
115 # gets BASIC auth info
117 auth_key = @@http_auth_headers.detect { |h| request.env.has_key?(h) }
118 auth_data = request.env[auth_key].to_s.split unless auth_key.blank?
119 return auth_data && auth_data[0] == 'Basic' ? Base64.decode64(auth_data[1]).split(':')[0..1] : [nil, nil]