Thank you for the breaking ti down further, it makes sense now. On Monday, June 20, 2016 at 11:01:04 AM UTC-4, Dmitriy Kopylenko wrote: > > Just want to add on top what Misagh said - the REST support in CAS is very > limited to producing just TGTs and STs. IMHO, for service-to-service “non > human interactive” authentication support (REST services for example) some > protocol other than CAS protocol is more appropriate e.g. OAuth (as Misagh > mentioned it already). > > Best, > D. > > On Jun 20, 2016, at 10:55 AM, Misagh Moayyed <[email protected] > <javascript:>> wrote: > > You’re thinking about this the right way; just not execution wise. You can > have an ST be valid multiple times of course as this is controlled by its > policy. However, what you’re really doing is treating an ST like an OAuth > access token, which it isn’t….or it’s not meant to be. Your better options > are to use proxying where you get a PGT, and you get PTs based on that PGT > you get. (The PGT becomes your access token). > > Or you just use the OAuth support...or some other form of non-interactive > AuthN. > > *From:* [email protected] <javascript:> [mailto:[email protected] > <javascript:>] *On Behalf Of *John Stevens II > *Sent:* Monday, June 20, 2016 7:04 AM > *To:* CAS Community <[email protected] <javascript:>> > *Cc:* [email protected] <javascript:> > *Subject:* Re: [cas-user] Rest API Service Ticket Validation Issue > > My thinking is if I have developers who build API's and want to integrate > CAS (not for sso but for centralized authentication) then a user who wants > to use the developers API would authenticate with CAS via the CAS Rest API, > possibly request an ST then use that ST to access the developers API on > every call to the developers API. I say every call (multiple times) because > you would need a way to verify that the user session is still valid right? > Otherwise you would have to authenticate the user on every call to the > developers API vs just verifying a ticket. Maybe i'm thinking about this > the wrong way? > > On Monday, June 20, 2016 at 9:23:38 AM UTC-4, Misagh Moayyed wrote: > > Why multiple times? What's the story there? > --Misagh > On Sun, Jun 19, 2016 at 2:29 PM, John Stevens II <[email protected]> > wrote: > > > Well not necessarily a third application, all I really want to accomplish > here is to be able to authenticate a user via CAS rest api (which I can), > be a able validate that user via CAS rest api multiple times (which I > can't) and be able to log the user out via CAS rest api (which I can). > > Is proxying necessary for this functionality? > > On Friday, June 17, 2016 at 4:41:47 PM UTC-4, Ray Bon wrote: > > A ST is (should be) validated only once and for only one service. Each > service will go through the CAS dance passing in the TGT and service URL to > receive its own ST. > If a third application needs to authenticate to your API, look at proxying, > > https://apereo.github.io/cas/4.2.x/installation/Configuring-Proxy-Authentication.html > > Ray > On 2016-06-17 13:12, John Stevens II wrote: > > Thank you, I've increased the service ticket timeout value and was able to > validate a ticket via /serviceValidate but I can only validate the ticket > once. > > If I am using the CAS Rest API to authenticate API's that we develop I > would want to verify that the service ticket is valid on every call to our > API's. How do I achieve this or is there another recommended way to achieve > this? > > I see the option *st.numOfUses *for service tickets but not sure if > unlimited is a valid option or if it's even recommended. > > On Friday, June 17, 2016 at 3:42:22 PM UTC-4, Misagh Moayyed wrote: > > /serviceValidate. > *From:* [email protected] [mailto:[email protected]] *On Behalf Of *John > Stevens II > *Sent:* Friday, June 17, 2016 12:10 PM > *To:* CAS Community <[email protected]> > *Cc:* [email protected]; [email protected] > *Subject:* Re: [cas-user] Rest API Service Ticket Validation Issue > Ok that may work, is that the recommended way to verify service tickets > for the Rest API (Without using the php client) or should I not be relying > on the actual client? > > On Friday, June 17, 2016 at 2:49:08 PM UTC-4, Dmitriy Kopylenko wrote: > > By the time the /serviceValidate with ST is called, the ST lifetime has > expired (10 seconds default). Increase the ST TTL on the CAS server to > something longer, but reasonable and see if it helps. > Best, > D. > > On Jun 17, 2016, at 2:44 PM, John Stevens II <[email protected]> wrote: > Need some insight on how to properly use the Rest API. > I have a simple php application below castest.php: > <?php > require_once '/var/www/sites/CAS-1.3.4/CAS.php'; > phpCAS::setDebug(); > // Enable verbose error messages. Disable in production! > phpCAS::setVerbose(true); > // Initialize phpCAS > phpCAS::client(CAS_VERSION_2_0, 'access.example.com', 443, '/cas'); > > phpCAS::setNoCasServerValidation(); > // force CAS authentication > phpCAS::forceAuthentication(); > echo "It worked"; > ?> > > Visiting the php page in the browser works with no problem, I'm able to > authenticate and access the content with no problem. > I can post to my post server rest url to get my TGT: > Posting form data: > username=Randomuser&password=Randompassword > To: > https://access.example.com/cas/v1/tickets > > Data (TGT) returned is: > https://access.example.com/cas/v1/tickets/ > TGT-19-MKJRShaS2EebhGB3HHbZabi6O0I2KeSgWkXz3xGvKjamJgqi5M-cas2.example.com > <http://tgt-19-mkjrshas2eebhgb3hhbzabi6o0i2kesgwkxz3xgvkjamjgqi5m-cas2.example.com/> > > Now I take my TGT url and post my service to get my ST: > Posting form data: > service=http%3A%2F%2Ftest.example.com <http://2ftest.example.com/> > %2Fcastest.php > > To: > https://access.example.com/cas/v1/tickets/ > TGT-19-MKJRShaS2EebhGB3HHbZabi6O0I2KeSgWkXz3xGvKjamJgqi5M-cas2.example.com > <http://tgt-19-mkjrshas2eebhgb3hhbzabi6o0i2kesgwkxz3xgvkjamjgqi5m-cas2.example.com/> > > Data (ST) returned is: > 0000: 53 54 2D 32 31 2D 79 47 59 69 57 6E 63 45 62 65 | ST-21-yGYiWncEbe | > 0010: 70 78 78 71 33 4B 6E 78 4F 52 2D 63 61 73 32 2E | pxxq3KnxOR-cas2. | > 0020: 69 6E 6D 61 72 2E 63 6F 6D | example.com | > > All is good so far, I have my TGT and ST now I should be able to access my > castest.php site so I do a get request on this url with my ticket as a > parameter: > Get: > http://test.example.com/castest.php?ticket= > ST-21-yGYiWncEbepxxq3KnxOR-cas2.example.com > <http://st-21-ygyiwncebepxxq3knxor-cas2.example.com/> > > Error is returned: > <html><head><title>CAS Authentication failed!</title></head><body><h1>CAS > Authentication failed!</h1><p>You were not authenticated.</p><p>You may > submit your request again by clicking <a > href="http://test.example.com/castest.php";>here</a>.</p><p>If > the problem persists, you may contact <a href="mailto:ro...@localhost";>the > administrator of this site</a>.</p><hr><address>phpCAS 1.3.4 using server > <a href="https://access.example.com/cas/";>https://access.example.com/cas/</a> > (CAS 2.0)</a></address></body></html><br /> > <b>Fatal error</b>: Uncaught exception 'CAS_AuthenticationException' in > /var/www/sites/vmbuild/CAS-1.3.4/CAS/Client.php:3234 > Stack trace: > #0 /var/www/sites/vmbuild/CAS-1.3.4/CAS/Client.php(1419): > CAS_Client->validateCAS20('https://access....', > '\n\n<cas:serviceR...', Object(DOMElement), false) > #1 /var/www/sites/vmbuild/CAS-1.3.4/CAS.php(1127): > CAS_Client->isAuthenticated() > #2 /var/www/sites/vmbuild/castest.php(21): phpCAS::isAuthenticated() > #3 {main} > thrown in <b>/var/www/sites/vmbuild/CAS-1.3.4/CAS/Client.php</b> on line > <b>3234</b><br /> > > Other things i've tried were to use the validation url to validate the > ticket that way but it says the ticket is not reconigzed: > Get or Post: > https://access.example.com/cas/serviceValidate?service=http%3A%2F% > 2Ftest.example.com <http://2ftest.example.com/>%2Fcastest.php&ticket= > ST-21-yGYiWncEbepxxq3KnxOR-cas2.example.com > <http://st-21-ygyiwncebepxxq3knxor-cas2.example.com/> > Returned: > <cas:serviceResponse xmlns:cas="http://www.yale.edu/tp/cas";> > <cas:authenticationFailure code="INVALID_TICKET"> > Ticket 'ST-21-yGYiWncEbepxxq3KnxOR-cas2.example.com > <http://st-21-ygyiwncebepxxq3knxor-cas2.example.com/>' not recognized > </cas:authenticationFailure> > </cas:serviceResponse> > > > > Just need to validate service tickets with/for the REST API any help would > be appreciated. > -- > You received this message because you are subscribed to the Google Groups > "CAS Community" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit 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