I have checked apache access.log on web server where client is placed and
there is no POST requests on logout. 0 messages or requests completely.
Thats while logging out with my cas 5.2.3
I have checked same log when i issue logout from cas 4.1.9 where SLO works
on same client, and I can see POST request in access.log correctly.
вторник, 24 апреля 2018 г., 18:42:19 UTC+2 пользователь rbon написал:
>
> Check your Apache access.log to see if the request is getting through.
> I see this when CAS sends logout request:
>
> 2018-04-24T09:32:57.816-07:00 lo...@z.comp.uvic.ca <javascript:>
> local2.notice httpd[2310]: access: coursespaces2d.uvic.ca:
> 111.104.118.193 - - [24/Apr/2018:09:32:57 -0700] "POST /login/logout.php
> HTTP/1.1" 200 26 "-" "Apache-HttpClient/4.5.3 (Java/1.8.0_121)" "__utma=-;
> __utmb=-; __utmc=-; __utmk=-; __utmx=-; __utmz=-;"
>
> Ray
>
>
> On Tue, 2018-04-24 at 03:27 -0700, Viacheslav Babanin wrote:
>
> It seems like I have a problem witch CAS 5.2.3 and SAML logout requests.
> Single logout doesn't work and from the logs it seems like CAS constructs
> SAML logout request but not actually sends it. I am using examplary phpCAS
> client from docs and when i go to ${cas-server}/cas/logout endpoint in
> there is nothing in phpCAS logs. If I use THE SAME client. only changing
> cas endpoint and protocol, with cas 4.1.9 (not configured by me but i have
> administrator access to it) everything works great and phpCAS actually gets
> logout request and correctly processes it. What should i look into? Please
> help.
>
> понедельник, 23 апреля 2018 г., 18:35:17 UTC+2 пользователь rbon написал:
>
> Viacheslav,
>
> You will want to have handleLogoutRequests(true) so that logout is
> handled. While testing, skip the CAS server array, just in case the network
> config changes the apparent source of the request.
>
> Put this in your CAS log4j2.xml to see what happens on CAS side of things:
>
> <!-- DEBUG service status and logout process and a lot of details
> -->
> <AsyncLogger name="org.apereo.cas.logout" level="debug" />
> <!-- INFO Performing logout operations for [TGT-...]
> [number] logout requests were processed
> DEBUG ST, principal and URL -->
> <AsyncLogger name="org.apereo.cas.logout.DefaultLogoutManager"
> level="debug">
> <Filters>
> <ThresholdFilter level="INFO" onMatch="ACCEPT"
> onMismatch="NEUTRAL" />
> <RegexFilter regex="Captured logout request.*"
> onMismatch="DENY" />
> </Filters>
> </AsyncLogger>
> <!-- DEBUG Logout request will be sent to but does not print
> anything when login was through SAML 1.1 -->
> <AsyncLogger
> name="org.apereo.cas.logout.DefaultSingleLogoutServiceLogoutUrlBuilder"
> level="debug" />
> <!-- DEBUG preparing, processing and logout with URL and ST -->
> <AsyncLogger
> name="org.apereo.cas.logout.DefaultSingleLogoutServiceMessageHandler"
> level="debug" />
> <!-- DEBUG SAML logout payload -->
> <AsyncLogger
> name="org.apereo.cas.logout.SamlCompliantLogoutMessageCreator"
> level="debug" />
>
> Ray
>
> On Mon, 2018-04-23 at 07:41 -0700, Viacheslav Babanin wrote:
>
> That's how phpCAS.log looks if i provide it with
> phpCAS::handleLogoutRequests(false);
>
> DA64 .=> phpCAS::client('S1', 'cas-1.server.test.pl', 443, '/cas')
> [index.php:13]
> DA64 .| => CAS_Client::__construct('S1', false, 'cas-1.server.test.pl',
> 443, '/cas', true) [CAS.php:360]
> DA64 .| | Starting a new session
> ST-27-xTftALKF-XM9TG94QFnab2R5994-v-cas-1 [Client.php:932]
> DA64 .| | Session is authenticated as: babanin [Client.php:936]
> DA64 .| <= ''
> DA64 .<= ''
> DA64 .=> phpCAS::setNoCasServerValidation() [index.php:20]
> DA64 .| You have configured no validation of the legitimacy of the cas
> server. This is not recommended for production use. [CAS.php:1644]
> DA64 .<= ''
> DA64 .=> CAS_Client::handleLogoutRequests(false, false) [CAS.php:1276]
> DA64 .| Not a logout request [Client.php:1739]
> DA64 .<= ''
> DA64 .=> phpCAS::forceAuthentication() [index.php:27]
> DA64 .| => CAS_Client::forceAuthentication() [CAS.php:1098]
> DA64 .| | => CAS_Client::isAuthenticated() [Client.php:1280]
> DA64 .| | | => CAS_Client::_wasPreviouslyAuthenticated()
> [Client.php:1393]
> DA64 .| | | | user = `babanin' [Client.php:1622]
> DA64 .| | | <= true
> DA64 .| | | user was already authenticated, no need to look for
> tickets [Client.php:1417]
> DA64 .| | <= true
> DA64 .| | no need to authenticate [Client.php:1282]
> DA64 .| <= true
> DA64 .<= ''
>
>
> понедельник, 23 апреля 2018 г., 16:33:09 UTC+2 пользователь Viacheslav
> Babanin написал:
>
> Could you elaborate, please?
>
> Quoting official documentation at
> https://wiki.jasig.org/display/casc/phpcas+examples
>
> "By default phpCAS by default only handles requests that emanate from the
> CAS host exclusively (declared in phpCAS::client() or phpCAS::proxy()).
> Failure to restrict SAML logout requests to authorized hosts could allow
> denial of service attacks where at the least the server is tied up parsing
> bogus XML messages.
>
> To disable access control on logout requests, use:
>
> phpCAS::handleLogoutRequests(false);
>
> The hosts allowed to send logout requests can also be passed in an array
> which might be usefull in with clustered cas servers:
>
> phpCAS::handleLogoutRequests(true, array("server1.domain.edu",
> "server2.domain.edu"));
>
>
> "
>
> As i understand, it should be enough either to use
> phpCAS::handleLogoutRequests(false);
> (which I tried and it seems like it has no impact) or to specify cas
> server which is allowed to send logout requests in an array (which I did in
> example above).
>
>
>
>
> понедельник, 23 апреля 2018 г., 16:25:18 UTC+2 пользователь Manfredo Hopp
> написал:
>
> Logout requests are handled by clients.
>
> .=> CAS_Client::handleLogoutRequests(true, array ( 0 => '
> cas-1.server.test.pl',)) [CAS.php:1276]
> D0EE .| Not a logout request [Client.php:1739]
>
> See phpcas
>
> El lunes, 23 de abril de 2018, Viacheslav Babanin <babani...@gmail.com>
> escribió:
>
> Hello, I have encountered issue with SSO for SAML 1.1 clients with CAS 5.2
>
> I am rather new cas user and probably i am missing something obvious.
>
> I am using folowing phpCAS client:
>
> <?php
> require_once 'phpcas/source/CAS.php';
> // Enable debugging
> phpCAS::setDebug('phpCAS.log');
> // Enable verbose error messages. Disable in production!
> phpCAS::setVerbose(true);
> // Initialize phpCAS
> $cas_host = 'cas-1.uek.krakow.pl';
> // Context of the CAS Server
> $cas_context = '/cas';
> // Port of your CAS server. Normally for a https server it's 443
> $cas_port = 443;
> phpCAS::client(SAML_VERSION_1_1, $cas_host, $cas_port, $cas_context);
> // For production use set the CA certificate that is the issuer of the cert
> // on the CAS server and uncomment the line below
> // phpCAS::setCasServerCACert($cas_server_ca_cert_path);
> // For quick testing you can disable SSL validation of the CAS server.
> // THIS SETTING IS NOT RECOMMENDED FOR PRODUCTION.
> // VALIDATING THE CAS SERVER IS CRUCIAL TO THE SECURITY OF THE CAS
> PROTOCOL!
> phpCAS::setNoCasServerValidation();
> // force CAS authentication
>
> $cas_real_hosts = array('cas-1.uek.krakow.pl');
>
>
> phpCAS::handleLogoutRequests(true, $cas_real_hosts);
>
> phpCAS::forceAuthentication();
> // at this step, the user has been authenticated by the CAS server
> // and the user's login name can be read with phpCAS::getUser().
> // logout if desired
> // logout if desired
> if (isset($_REQUEST['logout'])) {
> phpCAS::logout();
> }
> ?>
> <html>
> <head>
> <title>Advanced SAML 1.1 example</title>
> <meta http-equiv="Content-Type" content="text/html;
> charset=utf-8"/>
> </head>
> <body>
> <h2>Advanced SAML 1.1 example</h2>
> <?php require 'script_info.php' ?>
>
> Authentication succeeded for user
> <strong><?php echo phpCAS::getUser(); ?></strong>.
> User has attributes
> <strong><?php if(phpCAS::hasAttributes()){
> echo 'true';
> }
> else {
> echo 'false';
> }
>
> ?></strong>.
> <h3>User Attributes</h3>
> <ul>
> <?php
> foreach (phpCAS::getAttributes() as $key => $value) {
> if (is_array($value)) {
> echo '<li>', $key, ':<ol>';
> foreach ($value as $item) {
> echo '<li><strong>', $item, '</strong></li>';
> }
> echo '</ol></li>';
> } else {
> echo '<li>', $key, ': <strong>', $value, '</strong></li>' .
> PHP_EOL;
> }
> }
> ?>
> </ul>
> <p><a href="?logout=">Logout</a></p>
> </body>
> </html>
>
>
> Single sign in works like expected. If I have several CAS clients, when I
> log in to one of them, I am authenticated in all, like expected.
>
> But Single Logout completely doesn't work for me. When I log out using CAS
> logout endpoint "{cas-server}/cas/logout" i receive message that I am
> logged out from CAS and I can see in SSO manager that CAS Session is
> terminated.
> But all application sessions are still alive, I am allowed not only to
> navigate client pages but also close\open tabs and I am still logged in.
>
> I have tried to configure service with client application with both
> "BACK_CHANNEL" and "FRONT_CHANNEL" logoutType with no luck.
>
> 1. If I use BACK_CHANNEL.
>
> Thats how service definition looks like:
>
> {
> "@class" : "org.jasig.cas.services.RegexRegisteredService",
> "serviceId" : "https://cas-client.ssl.stub/";,
> "name" : "example_simple_citest",
> "id" : 7,
> "logoutType" : "BACK_CHANNEL",
>
> "attributeReleasePolicy" : {
> "@class" :
> "org.apereo.cas.services.ReturnMappedAttributeReleasePolicy",
> "allowedAttributes" : {
> "@class" : "java.util.TreeMap",
> "uid" : "user_id",
> "sn" : "surname"
> }
> }
> }
>
>
> When I log out using "{cas-server}/cas/logout" endpoint CAS server log
> looks like this: back.txt (see attachment)
>
> phpCAS.log doesn't log anything in this case. And application session
> still lives untill I close browser.
>
> 2. If I use FRONT_CHANNEL.
>
> Thats how service definition looks like:
>
> {
> "@class" : "org.jasig.cas.services.RegexRegisteredService",
> "serviceId" : "https://cas-client.ssl.stub/";,
> "name" : "example_simple_citest",
> "id" : 7,
> "logoutType" : "FRONT_CHANNEL",
>
> "attributeReleasePolicy" : {
> "@class" :
> "org.apereo.cas.services.ReturnMappedAttributeReleasePolicy",
> "allowedAttributes" : {
> "@class" : "java.util.TreeMap",
> "uid" : "user_id",
> "sn" : "surname"
> }
> }
> }
>
> When I log out using "{cas-server}/cas/logout" endpoint CAS server log
> looks like this: front.txt (see attachment)
>
> And I see following message upon logout on endpoint page:
>
>
> <https://lh3.googleusercontent.com/-UTWr5C0Ljuw/Wt3mgxz_NeI/AAAAAAAAAKM/PPlxChw1Gwk--HOokjLhoOO5DUzk7zV2gCLcBGAs/s1600/fronLogout.png>
>
>
>
>
> W
> Which tells me that logout notification has been sent.
>
> At the same time, when endpoint logout happens, phpCAS.log logs following
> message.
>
> D0EE .START (2018-04-23 15:37:16) phpCAS-1.3.5 ******************
> [CAS.php:468]
> D0EE .=> phpCAS::client('S1', 'cas-1.server.test.pl', 443, '/cas')
> [index.php:13]
> D0EE .| => CAS_Client::__construct('S1', false, 'cas-1.server.test.pl',
> 443, '/cas', true) [CAS.php:360]
> D0EE .| | Starting a new session
> ST-26-6Ad0C8OCIF5n-1zWgmiE8HZdw-E-v-cas-1 [Client.php:932]
> D0EE .| | Session is authenticated as: babanin [Client.php:936]
> D0EE .| <= ''
> D0EE .<= ''
> D0EE .=> phpCAS::setNoCasServerValidation() [index.php:20]
> D0EE .| You have configured no validation of the legitimacy of the cas
> server. This is not recommended for production use. [CAS.php:1644]
> D0EE .<= ''
> D0EE .=> CAS_Client::handleLogoutRequests(true, array ( 0 => '
> cas-1.server.test.pl',)) [CAS.php:1276]
> D0EE .| Not a logout request [Client.php:1739]
> D0EE .<= ''
> D0EE .=> phpCAS::forceAuthentication() [index.php:27]
> D0EE .| => CAS_Client::forceAuthentication() [CAS.php:1098]
> D0EE .| | => CAS_Client::isAuthenticated() [Client.php:1280]
> D0EE .| | | => CAS_Client::_wasPreviouslyAuthenticated()
> [Client.php:1393]
> D0EE .| | | | user = `babanin' [Client.php:1622]
> D0EE .| | | <= true
> D0EE .| | | user was already authenticated, no need to look for
> tickets [Client.php:1417]
> D0EE .| | <= true
> D0EE .| | no need to authenticate [Client.php:1282]
> D0EE .| <= true
> D0EE .<= ''
>
> This message looks exactly like regular login message, but it appers when
> tab with application is closed and at the exact time when CAS sends logout
> notification.
> It seems like client receives FRONT_CHANNEL connection from server but
> fails to recognise it as logout request.
>
>
> So, summarising:
>
> Logging out from cas using both endpoint and casified applications causes
> CAS to terminate SSO session but fails to terminate application sessions.
> As a client I am using example code from phpCAS documentation.
> Please help me to solve this issue, or, atlease get understanding of it.
>
> Thank you very much for attention,
>
> Viacheslav Babanin
>
> --
> - Website: https://apereo.github.io/cas
> - Gitter Chatroom: https://gitter.im/apereo/cas
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>
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> .
>
>
>
> --
> Ray Bon
> Programmer analyst
> Development Services, University Systems
> 2507218831 | CLE 019 | rb...@uvic.ca
>
>
> --
> Ray Bon
> Programmer analyst
> Development Services, University Systems
> 2507218831 | CLE 019 | rb...@uvic.ca <javascript:>
>
>
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