Proyectos de Subversion Moodle

<?php

/**

 * Licensed to Jasig under one or more contributor license

 * agreements. See the NOTICE file distributed with this work for

 * additional information regarding copyright ownership.

 *

 * Jasig licenses this file to you under the Apache License,

 * Version 2.0 (the "License"); you may not use this file except in

 * compliance with the License. You may obtain a copy of the License at:

 *

 * http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 *

 * PHP Version 7

 *

 * @file     CAS/Request/CurlRequest.php

 * @category Authentication

 * @package  PhpCAS

 * @author   Adam Franco <afranco@middlebury.edu>

 * @license  http://www.apache.org/licenses/LICENSE-2.0  Apache License 2.0

 * @link     https://wiki.jasig.org/display/CASC/phpCAS

 */

/**

 * Provides support for performing web-requests via curl

 *

 * @class    CAS_Request_CurlRequest

 * @category Authentication

 * @package  PhpCAS

 * @author   Adam Franco <afranco@middlebury.edu>

 * @license  http://www.apache.org/licenses/LICENSE-2.0  Apache License 2.0

 * @link     https://wiki.jasig.org/display/CASC/phpCAS

 */

class CAS_Request_CurlRequest

extends CAS_Request_AbstractRequest

implements CAS_Request_RequestInterface

{

    /**

     * Set additional curl options

     *

     * @param array $options option to set

     *

     * @return void

     */

    public function setCurlOptions (array $options)

    {

        $this->_curlOptions = $options;

    }

    private $_curlOptions = array();

    /**

     * Send the request and store the results.

     *

     * @return bool true on success, false on failure.

     */

    protected function sendRequest ()

    {

        phpCAS::traceBegin();

        /*********************************************************

         * initialize the CURL session

        *********************************************************/

        $ch = $this->initAndConfigure();

        /*********************************************************

         * Perform the query

        *********************************************************/

        $buf = curl_exec($ch);

        if ( $buf === false ) {

            phpCAS::trace('curl_exec() failed');

            $this->storeErrorMessage(

                'CURL error #'.curl_errno($ch).': '.curl_error($ch)

            );

            $res = false;

        } else {

            $this->storeResponseBody($buf);

            phpCAS::trace("Response Body: \n".$buf."\n");

            $res = true;

        }

        // close the CURL session

        curl_close($ch);

        phpCAS::traceEnd($res);

        return $res;

    }

    /**

     * Internal method to initialize our cURL handle and configure the request.

     * This method should NOT be used outside of the CurlRequest or the

     * CurlMultiRequest.

     *

     * @return resource|false The cURL handle on success, false on failure

     */

    public function initAndConfigure()

    {

        /*********************************************************

         * initialize the CURL session

        *********************************************************/

        $ch = curl_init($this->url);

        curl_setopt_array($ch, $this->_curlOptions);

        /*********************************************************

         * Set SSL configuration

        *********************************************************/

        if ($this->caCertPath) {

            if ($this->validateCN) {

                curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);

            } else {

                curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);

            }

            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 1);

            curl_setopt($ch, CURLOPT_CAINFO, $this->caCertPath);

            phpCAS::trace('CURL: Set CURLOPT_CAINFO ' . $this->caCertPath);

        } else {

            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);

            curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);

        }

        /*********************************************************

         * Configure curl to capture our output.

        *********************************************************/

        // return the CURL output into a variable

        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

        // get the HTTP header with a callback

        curl_setopt($ch, CURLOPT_HEADERFUNCTION, array($this, '_curlReadHeaders'));

        /*********************************************************

         * Add cookie headers to our request.

        *********************************************************/

        if (count($this->cookies)) {

            $cookieStrings = array();

            foreach ($this->cookies as $name => $val) {

                $cookieStrings[] = $name.'='.$val;

            }

            curl_setopt($ch, CURLOPT_COOKIE, implode(';', $cookieStrings));

        }

        /*********************************************************

         * Add any additional headers

        *********************************************************/

        if (count($this->headers)) {

            curl_setopt($ch, CURLOPT_HTTPHEADER, $this->headers);

        }

        /*********************************************************

         * Flag and Body for POST requests

        *********************************************************/

        if ($this->isPost) {

            curl_setopt($ch, CURLOPT_POST, 1);

            curl_setopt($ch, CURLOPT_POSTFIELDS, $this->postBody);

        }

        /*********************************************************

         * Set User Agent

         *********************************************************/

        curl_setopt($ch, CURLOPT_USERAGENT, 'phpCAS/' . phpCAS::getVersion());

        return $ch;

    }

    /**

     * Store the response body.

     * This method should NOT be used outside of the CurlRequest or the

     * CurlMultiRequest.

     *

     * @param string $body body to stor

     *

     * @return void

     */

    public function _storeResponseBody ($body)

    {

        $this->storeResponseBody($body);

    }

    /**

     * Internal method for capturing the headers from a curl request.

     *

     * @param resource $ch     handle of curl

     * @param string $header header

     *

     * @return int

     */

    public function _curlReadHeaders ($ch, $header)

    {

        $this->storeResponseHeader($header);

        return strlen($header);

    }

}