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<?php
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/**
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 * Licensed to Jasig under one or more contributor license
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 * agreements. See the NOTICE file distributed with this work for
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 * additional information regarding copyright ownership.
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 *
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 * Jasig licenses this file to you under the Apache License,
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 * Version 2.0 (the "License"); you may not use this file except in
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 * compliance with the License. You may obtain a copy of the License at:
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 *
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 * http://www.apache.org/licenses/LICENSE-2.0
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 *
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 * Unless required by applicable law or agreed to in writing, software
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 * distributed under the License is distributed on an "AS IS" BASIS,
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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 * See the License for the specific language governing permissions and
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 * limitations under the License.
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 *
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 * PHP Version 7
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 *
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 * @file     CAS/AuthenticationException.php
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 * @category Authentication
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 * @package  PhpCAS
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 * @author   Joachim Fritschi <jfritschi@freenet.de>
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 * @license  http://www.apache.org/licenses/LICENSE-2.0  Apache License 2.0
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 * @link     https://wiki.jasig.org/display/CASC/phpCAS
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 */
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/**
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 * This interface defines methods that allow proxy-authenticated service handlers
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 * to interact with phpCAS.
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 *
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 * Proxy service handlers must implement this interface as well as call
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 * phpCAS::initializeProxiedService($this) at some point in their implementation.
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 *
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 * While not required, proxy-authenticated service handlers are encouraged to
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 * implement the CAS_ProxiedService_Testable interface to facilitate unit testing.
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 *
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 * @class    CAS_AuthenticationException
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 * @category Authentication
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 * @package  PhpCAS
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 * @author   Joachim Fritschi <jfritschi@freenet.de>
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 * @license  http://www.apache.org/licenses/LICENSE-2.0  Apache License 2.0
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 * @link     https://wiki.jasig.org/display/CASC/phpCAS
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 */
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class CAS_AuthenticationException
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extends RuntimeException
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implements CAS_Exception
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{
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    /**
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     * This method is used to print the HTML output when the user was not
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     * authenticated.
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     *
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     * @param CAS_Client $client       phpcas client
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     * @param string     $failure      the failure that occured
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     * @param string     $cas_url      the URL the CAS server was asked for
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     * @param bool       $no_response  the response from the CAS server (other
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     * parameters are ignored if TRUE)
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     * @param bool       $bad_response bad response from the CAS server ($err_code
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     * and $err_msg ignored if TRUE)
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     * @param string     $cas_response the response of the CAS server
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     * @param int        $err_code     the error code given by the CAS server
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     * @param string     $err_msg      the error message given by the CAS server
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     */
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    public function __construct($client,$failure,$cas_url,$no_response,
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        $bad_response=false,$cas_response='',$err_code=-1,$err_msg=''
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    ) {
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        $messages = array();
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        phpCAS::traceBegin();
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        $lang = $client->getLangObj();
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        $client->printHTMLHeader($lang->getAuthenticationFailed());
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        if (phpCAS::getVerbose()) {
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            printf(
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                $lang->getYouWereNotAuthenticated(),
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                htmlentities($client->getURL()),
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                $_SERVER['SERVER_ADMIN'] ?? ''
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            );
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        }
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        phpCAS::trace($messages[] = 'CAS URL: '.$cas_url);
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        phpCAS::trace($messages[] = 'Authentication failure: '.$failure);
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        if ( $no_response ) {
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            phpCAS::trace($messages[] = 'Reason: no response from the CAS server');
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        } else {
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            if ( $bad_response ) {
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                phpCAS::trace($messages[] = 'Reason: bad response from the CAS server');
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            } else {
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                switch ($client->getServerVersion()) {
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                case CAS_VERSION_1_0:
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                    phpCAS::trace($messages[] = 'Reason: CAS error');
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                    break;
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                case CAS_VERSION_2_0:
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                case CAS_VERSION_3_0:
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                    if ( $err_code === -1 ) {
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                        phpCAS::trace($messages[] = 'Reason: no CAS error');
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                    } else {
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                        phpCAS::trace($messages[] = 'Reason: ['.$err_code.'] CAS error: '.$err_msg);
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                    }
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                    break;
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                }
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            }
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            phpCAS::trace($messages[] = 'CAS response: '.$cas_response);
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        }
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        $client->printHTMLFooter();
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        phpCAS::traceExit();
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        parent::__construct(implode("\n", $messages));
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    }
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}
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?>