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add CAS auth support. Provided by Tim Shadel

git-svn-id: svn+ssh://phoenix/srv/svn/webistrano/trunk@195 e1153f85-6c6c-dc11-afa8-0013d3c39b19
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1 parent fa9d107 commit 583305f594a35c47e05c60f26060db618c990655 jweiss committed Oct 12, 2008
@@ -1,6 +1,8 @@
+* Added CAS-auth support. Provided by Tim Shadel.
* Auto-scroll deployment log
* Ability to cancel running deployments. Refactor deployment status.
@@ -3,6 +3,7 @@ class ApplicationController < ActionController::Base
include ExceptionNotifiable
include AuthenticatedSystem
+ before_filter CASClient::Frameworks::Rails::Filter if WebistranoConfig[:authentication_method] == :cas
before_filter :login_from_cookie, :login_required
around_filter :set_timezone
@@ -26,8 +26,12 @@ def destroy
self.current_user.forget_me if logged_in?
cookies.delete :auth_token
- flash[:notice] = "You have been logged out."
- redirect_back_or_default( home_path )
+ if WebistranoConfig[:authentication_method] != :cas
+ flash[:notice] = "You have been logged out."
+ redirect_back_or_default( home_path )
+ else
+ redirect_to "#{CASClient::Frameworks::Rails::Filter.config[:logout_url]}?serviceUrl=#{home_url}"
+ end
def version
@@ -1,6 +1,9 @@
class StylesheetsController < ApplicationController
skip_before_filter :login_required
+ if WebistranoConfig[:authentication_method] == :cas
+ skip_before_filter CASClient::Frameworks::Rails::Filter
+ end
session :off
@@ -99,7 +99,7 @@ def encrypt_password
def password_required?
- crypted_password.blank? || !password.blank?
+ WebistranoConfig[:authentication_method] != :cas && (crypted_password.blank? || !password.blank?)
@@ -9,6 +9,7 @@
<%= text_field 'user', 'email', :style =>'width:330px;' %>
+<% unless WebistranoConfig[:authentication_method] == :cas -%>
<b>Password</b><br />
<%= password_field 'user', 'password', :style =>'width:330px;' %>
@@ -18,6 +19,7 @@
<b>Password confirmation</b><br />
<%= password_field 'user', 'password_confirmation', :style =>'width:330px;' %>
+<% end -%>
<b>Timezone</b><br />
@@ -0,0 +1,14 @@
+ :cas_base_url: https://cas.devexample.tld/cas/
+ :validate_url: https://cas.devexample.tld/cas/validate
+ :logout_url: https://cas.devexample.tld/cas/logout
+ :cas_base_url: https://cas.qaexample.tld/cas/
+ :validate_url: https://cas.qaexample.tld/cas/validate
+ :logout_url: https://cas.qaexample.tld/cas/logout
+ :cas_base_url: https://cas.example.tld/cas/
+ :validate_url: https://cas.example.tld/cas/validate
+ :logout_url: https://cas.example.tld/cas/logout
@@ -34,6 +34,7 @@
# Force all environments to use the same logger level
# (by default production uses :info, the others :debug)
# config.log_level = :debug
# Your secret key for verifying cookie session data integrity.
# If you change this key, all old sessions will become invalid!
@@ -76,6 +77,11 @@
# Include your application configuration below
+if WebistranoConfig[:authentication_method] == :cas
+ cas_options = YAML::load_file(RAILS_ROOT+'/config/cas.yml')
+ CASClient::Frameworks::Rails::Filter.configure(cas_options[RAILS_ENV])
ActiveSupport::CoreExtensions::Time::Conversions::DATE_FORMATS.update(:log => '%Y-%m-%d %H:%M')
@@ -7,6 +7,9 @@ WebistranoConfig = {
# secret password for session HMAC
:session_secret => 'please choose a long random string, min. 30 characters',
+ # Uncomment to use CAS authentication
+ # :authentication_method => :cas,
# SMTP settings for outgoing email
:smtp_delivery_method => :sendmail,
@@ -26,5 +29,5 @@ WebistranoConfig = {
# Sender and recipient for Webistrano exceptions
:exception_recipients => "",
:exception_sender_address => ""
@@ -9,7 +9,7 @@ def logged_in?
# Accesses the current user from the session. Set it to :false if login fails
# so that future calls do not hit the database.
def current_user
- @current_user ||= (login_from_session || login_from_basic_auth || login_from_cookie || :false)
+ @current_user ||= (login_from_cas || login_from_session || login_from_basic_auth || login_from_cookie || :false)
# Store the given user in the session.
@@ -95,6 +95,11 @@ def self.included(base)
base.send :helper_method, :current_user, :logged_in?
+ # Called from #current_user. First attempt to login by the user id from cas.
+ def login_from_cas
+ self.current_user = User.find_by_login(session[:cas_user]) if session[:cas_user]
+ end
# Called from #current_user. First attempt to login by the user id stored in the session.
def login_from_session
self.current_user = User.find_by_id(session[:user]) if session[:user]
@@ -0,0 +1,138 @@
+= RubyCAS-Client Changelog
+== Version 2.1.0 :: In Progress...
+* Implemented single-sign-out functionality. The client will now intercept
+ single-sign-out requests and deal with them appropriately if the
+ :enable_single_sign_out config option is set to true. This is currently
+ disabled by default.
+* Added logout method to Rails adapter to simplify the logout process. The
+ logout method resets the local Rails session and redirects to the CAS
+ logout page.
+* The 'service' parameter in the logout method has been renamed to
+ 'destination' to better match the behaviour of other CAS clients. So for
+ example, when you call logout_url("http://foo.example"), the method will
+ now return "https://cas.example?destination=https%3A%2F%2Ffoo.example"
+ instead of the old "https://cas.example?service=https%3A%2F%2Ffoo.example".
+ RubyCAS-Server has been modified to deal with this as of version 0.6.0.
+* Some behind-the-scenes change to the way previous authentication info is
+ reused by the Rails filter in subsequent requests (see the note below
+ in the 2.0.1 release). From the user's and integrator's point of view
+ there shouldn't be any obvious difference from 2.0.1.
+* Redirection loop interception: The client now logs a warning message when it
+ believes that it is stuck in a redirection loop with the CAS server. If more
+ than three of these redirects occur within one second, the client will
+ redirect back to the login page with renew=1, forcing the user to try
+ authenticating again.
+* Fixed bug where the the service/destination parameter in the logout url
+ would retain the 'ticket' value. The ticket is now automatically stripped
+ from the logout url.
+* Extra user attributes are now automatically unserialized if the incoming data
+ is in YAML format.
+== Version 2.0.1 :: 2008-02-27
+* The Rails filter no longer by default redirects to the CAS server on
+ every request. This restores the behaviour of RubyCAS-Client 1.x.
+ In other words, if a session[:cas_user] value exists, the filter
+ will assume that the user is authenticated without going through the
+ CAS server. This behaviour can be disabled (so that a CAS re-check is
+ done on every request) by setting the 'authenticate_on_every_request'
+ option to true. See the "Re-authenticating on every request" section
+ in the README.txt for details.
+== Version 2.0.0 :: 2008-02-14
+* Core client has been abstracted out of the Rails adapter. It should now
+ be possible to use the client in other frameworks (e.g. Camping).
+* Configuration syntax has completely changed. In other words, your old
+ rubycas-client-1.x configuration will no longer work. See the README
+ for details.
+* Added support for reading extra attributes from the CAS response (i.e. in
+ addition to just the username). However currently this is somewhat useless
+ since RubyCAS-Server does not yet provide a method for adding extra
+ attributes to the responses it generates.
+== Version 1.1.0 :: 2007-12-21
+* Fixed serious bug having to do with logouts. You can now end the
+ CAS session on the client-side (i.e. force the client to re-authenticate)
+ by setting session[:casfilteruser] = nil.
+* Added new GatewayFilter. This is identical to the normal Filter but
+ has the gateway option set to true by default. This should make
+ using the gateway option easier.
+* The CAS::Filter methods are now properly documented.
+* Simplified guess_service produces better URLs when redirecting to the CAS
+ server for authentication and the service URL is not explicitly specified.
+ [delagoya]
+* The correct method for overriding the service URL for the client is now
+ properly documented. You should use service_url=, as server_name= no longer
+ works and instead generates a warning message.
+* logout_url() now takes an additional 'service' parameter. If specified, this
+ URL will be passed on to the CAS server as part of the logout URL.
+== Version 1.0.0 :: 2007-07-26
+* RubyCAS-Client has matured to the point where it is probably safe to
+ take it out of beta and release version 1.0.
+* Non-SSL CAS URLs will now work. This may be useful for demo purposes,
+ but certainly shouldn't be used in production. The client automatically
+ disables SSL if the CAS URL starts with http (rather than https). [rubywmq]
+== Version 0.12.0
+* Prior to redirecting to the CAS login page, the client now stores the
+ current service URI in a session variable. This value is used to
+ validate the service ticket after the user comes back from the CAS
+ server's login page. This should address issues where redirection
+ from the CAS server resulted in a slightly different URI from the original
+ one used prior to login redirection (for example due to variations in the
+ way routing rules are applied by the server).
+* The client now handles malformed CAS server responses more gracefully.
+ This makes debugging a malfunctioning CAS server somewhat easier.
+* When receiving a proxy-granting ticket, the cas_proxy_callback_controller
+ can now take a parameter called 'pgt' (which is what ought to be used
+ according to the published CAS spec) or 'pgtId' (which is what the JA-SIG
+ CAS server uses).
+* Logging has been somewhat quieted down. Many messages that were previously
+ logged as INFO are now logged as DEBUG.
+== Version 0.11.0
+* Added this changelog to advise users of major changes to the library.
+* Large chunks of the library have been re-written. Beware of the possibility
+ of new bugs (although the re-write was meant to fix a whole slew of existing
+ bugs, so you're almost certainly better off upgrading).
+* service and targetService parameters in requests are now properly URI-encoded,
+ so the filter should behave properly when your service has query parameters.
+ Thanks sakazuki for pointing out the problem.
+* You can now force the CAS client to re-authenticate itself with the CAS server
+ (i.e. override the authentication stored in the session) by providing a new
+ service ticket in the URI. In other words, the client will authenticate with
+ CAS if: a) you have a 'ticket' parameter in the URI, and there is currently no
+ authentication info in the session, or b) you have a 'ticket' parameter in the
+ URI and this ticket is different than the ticket that was used to authenticat
+ the existing session. This is especially useful when you are using CAS proxying,
+ since it allows you to force re-authentication in proxied applications (for
+ example, when the user has logged out and a new user has logged in in the parent
+ proxy-granting application).
+* If your service URI has a 'ticket' parameter, it will now be automatically
+ removed when passing the service as a parameter in any CAS request. This is
+ done because at least some CAS servers will happily accept a service URI with
+ a 'ticket' parameter, which will result in a URI with multiple 'ticket'
+ parameters once you are redirected back to CAS (and that in turn can result
+ in an endless redirection loop).
+* Logging has been greatly improved, which should make debugging your CAS
+ installation much easier. Look for the logs under log/cas_client_RAILS_ENV.log
+* When you install RubyCAS-Client as a Rails plugin, it will now by default
+ use a custom logger. You can change this by explicitly setting your own
+ logger in your environment.rb, or by modifying the plugin's init.rb.
+* CasProxyCallbackController no longer checks to make sure that the incoming
+ request is secure. The check is impossible since the secure header is not
+ passed on by at least some reverse proxies (like Pound), and if you are using
+ the callback controller then you are almost certainly also using a reverse
+ proxy.
+* Cleaned up and updated documentation, fixed some example code.
@@ -0,0 +1 @@
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