1Authen::CAS::Client(3)User Contributed Perl DocumentationAuthen::CAS::Client(3)
2
6 Authen::CAS::Client - Provides an easy-to-use interface for
7 authentication using JA-SIG's Central Authentication Service
8
10 use Authen::CAS::Client;
11 my $cas = Authen::CAS::Client->new( 'https://example.com/cas' );
13 # generate an HTTP redirect to the CAS login URL
16 my $r = HTTP::Response->new( 302 );
17 $r->header( Location => $cas->login_url );
18 # generate an HTTP redirect to the CAS logout URL
21 my $r = HTTP::Response->new( 302 );
22 $r->header( Location => $cas->logout_url );
23 # validate a service ticket (CAS v1.0)
26 my $r = $cas->validate( $service, $ticket );
27 if( $r->is_success ) {
28 print "User authenticated as: ", $r->user, "\n";
29 }
30 # validate a service ticket (CAS v2.0)
32 my $r = $cas->service_validate( $service, $ticket );
33 if( $r->is_success ) {
34 print "User authenticated as: ", $r->user, "\n";
35 }
36 # validate a service/proxy ticket (CAS v2.0)
39 my $r = $cas->proxy_validate( $service, $ticket );
40 if( $r->is_success ) {
41 print "User authenticated as: ", $r->user, "\n";
42 print "Proxied through:\n";
43 print " $_\n"
44 for $r->proxies;
45 }
46 # validate a service ticket and request a proxy ticket (CAS v2.0)
49 my $r = $cas->service_validate( $server, $ticket, pgtUrl => $url );
50 if( $r->is_success ) {
51 print "User authenticated as: ", $r->user, "\n";
52 unless( defined $r->iou ) {
54 print "Service validation for proxying failed\n";
55 }
56 else {
57 print "Proxy granting ticket IOU: ", $r->iou, "\n";
58 ...
60 # map IOU to proxy granting ticket via request to pgtUrl
61 ...
62 $r = $cas->proxy( $pgt, $target_service );
64 if( $r->is_success ) {
65 print "Proxy ticket issued: ", $r->proxy_ticket, "\n";
66 }
67 }
68 }
69
71 The Authen::CAS::Client module provides a simple interface for
72 authenticating users using JA-SIG's CAS protocol. Both CAS v1.0 and
73 v2.0 are supported.
74
76 new $url [, %args]
77 new() creates an instance of an "Authen::CAS::Client" object. $url
78 refers to the CAS server's base URL. %args may contain the following
79 optional parameter:
80 fatal => $boolean
82 If this argument is true, the CAS client will die() when an error
84 occurs and $@ will contain the error message. Otherwise an
85 "Authen::CAS::Client::Response::Error" object will be returned. See
86 Authen::CAS::Client::Response for more detail on response objects.
87 login_url $service [, %args]
89 login_url() returns the CAS server's login URL which can be used to
90 redirect users to start the authentication process. $service is the
91 service identifier that will be used during validation requests. %args
92 may contain the following optional parameters:
93 renew => $boolean
95 This causes the CAS server to force a user to re-authenticate even if
97 an SSO session is already present for that user.
98 gateway => $boolean
100 This causes the CAS server to only rely on SSO sessions for
102 authentication. If an SSO session is not available for the current
103 user, validation will result in a failure.
104 logout_url [%args]
106 logout_url() returns the CAS server's logout URL which can be used to
107 redirect users to end authenticated sessions. %args may contain the
108 following optional parameter:
109 url => $url
111 If present, the CAS server will present the user with a link to the
113 given URL once the user has logged out.
114 validate $service, $ticket [, %args]
116 validate() attempts to validate a service ticket using the CAS v1.0
117 protocol. $service is the service identifier that was passed to the
118 CAS server during the login process. $ticket is the service ticket
119 that was received after a successful authentication attempt. Returns
120 an appropriate Authen::CAS::Client::Response object. %args may contain
121 the following optional parameter:
122 renew => $boolean
124 This will cause the CAS server to respond with a failure if
126 authentication validation was done via a CAS SSO session.
127 service_validate $service, $ticket [, %args]
129 service_validate() attempts to validate a service ticket using the CAS
130 v2.0 protocol. This is similar to validate(), but allows for greater
131 flexibility when there is a need for proxying authentication to back-
132 end services. The $service and $ticket parameters are the same as
133 above. Returns an appropriate Authen::CAS::Client::Response object.
134 %args may contain the following optional parameters:
135 renew => $boolean
137 This will cause the CAS server to respond with a failure if
139 authentication validation was done via a CAS SSO session.
140 pgtUrl => $url
142 This tells the CAS server that a proxy ticket needs to be issued for
144 proxying authentication to a back-end service. $url corresponds to a
145 callback URL that the CAS server will use to verify the service's
146 identity. Per the CAS specification, this URL must be HTTPS. If this
147 verification fails, normal validation will occur, but a proxy granting
148 ticket IOU will not be issued.
149 Also note that this call will block until the CAS server completes its
151 service verification attempt. The returned proxy granting ticket IOU
152 can then be used to retrieve the proxy granting ticket that was passed
153 as a parameter to the given URL.
154 proxy_validate $service, $ticket [, %args]
156 proxy_validate() is almost identical in operation to service_validate()
157 except that both service tickets and proxy tickets can be used for
158 validation and a list of proxies will be provided if proxied
159 authentication has been used. The $service and $ticket parameters are
160 the same as above. Returns an appropriate
161 Authen::CAS::Client::Response object. %args may contain the following
162 optional parameters:
163 renew => $boolean
165 This is the same as described above.
167 pgtUrl => $url
169 This is the same as described above.
171 proxy $pgt, $target
173 proxy() is used to retrieve a proxy ticket that can be passed to a
174 back-end service for proxied authentication. $pgt is the proxy
175 granting ticket that was passed as a parameter to the "pgtUrl"
176 specified in either service_validate() or proxy_validate(). $target is
177 the service identifier for the back-end system that will be using the
178 returned proxy ticket for validation. Returns an appropriate
179 Authen::CAS::Client::Response object.
180
182 None are known at this time, but if you find one, please feel free to
183 submit a report to the author.
184
186 jason hord <pravus@cpan.org>
187
189 Authen::CAS::Client::Response
190 More information about CAS can be found at JA-SIG's CAS homepage:
192 <http://www.ja-sig.org/products/cas/>
193
195 Copyright (c) 2007-2014, jason hord
196 Permission is hereby granted, free of charge, to any person obtaining a
198 copy of this software and associated documentation files (the
199 "Software"), to deal in the Software without restriction, including
200 without limitation the rights to use, copy, modify, merge, publish,
201 distribute, sublicense, and/or sell copies of the Software, and to
202 permit persons to whom the Software is furnished to do so, subject to
203 the following conditions:
204 The above copyright notice and this permission notice shall be included
206 in all copies or substantial portions of the Software.
207 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
209 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
210 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
211 IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
212 CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
213 TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
214 SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
215perl v5.36.0 2023-01-19 Authen::CAS::Client(3)