chamilo-lms2/main/webservices/courses_list.rest.php

<?php
/* For licensing terms, see /license.txt */
/**
 * This script provides the caller service with a list
 * of courses that have a certain level of visibility
 * on this chamilo portal.
 * It is set to work with the Chamilo module for Drupal:
 * http://drupal.org/project/chamilo
 *
 * @author Yannick Warnier <yannick.warnier@beeznest.com>
 * @package chamilo.webservices
 */

require_once __DIR__.'/../inc/global.inc.php';

/**
 * Get a list of courses (code, url, title, teacher, language) and return to caller
 * Function registered as service. Returns strings in UTF-8.
 * @param string Security key (the Dokeos install's API key)
 * @param mixed  Array or string. Type of visibility of course (public, public-registered, private, closed)
 * @return array Courses list (code=>[title=>'title',url='http://...',teacher=>'...',language=>''],code=>[...],...)
 */
function courses_list($security_key, $visibilities = 'public')
{
    global $_configuration;

    // Check if this script is launch by server and if security key is ok.
    if ($security_key != $_configuration['security_key']) {
        return array('error_msg' => 'Security check failed');
    }

    $vis = array(
        'public' => '3',
        'public-registered' => '2',
        'private' => '1',
        'closed' => '0',
    );

    $courses_list = array();

    if (!is_array($visibilities)) {
        $tmp = $visibilities;
        $visibilities = array($tmp);
    }
    foreach ($visibilities as $visibility) {
        if (!in_array($visibility, array_keys($vis))) {
            return array('error_msg' => 'Security check failed');
        }
        $courses_list_tmp = CourseManager::get_courses_list(
            null,
            null,
            null,
            null,
            $vis[$visibility]
        );
        foreach ($courses_list_tmp as $index => $course) {
            $course_info = CourseManager::get_course_information(
                $course['code']
            );
            $courses_list[$course['code']] = array(
                'title' => api_utf8_encode(
                    $course_info['title']
                ),
                'url' => api_get_path(WEB_COURSE_PATH).$course_info['directory'].'/',
                'teacher' => api_utf8_encode($course_info['tutor_name']),
                'language' => $course_info['course_language'],
            );
        }
    }

    return $courses_list;
}

header('Content-Type: text/xml; charset=utf-8');
echo '<?xml version="1.0"?>';
echo '<courseslist>';

if (empty($_POST['security-key']) || empty($_POST['visibility'])) {
    echo '<errormsg>Invalid parameters, this script expects a security-key and a visibility parameters</errormsg>';
} else {
    $courses_list = courses_list($_POST['security-key'], $_POST['visibility']);
    foreach ($courses_list as $code => $cd) {
        echo '<course>';
        echo '<code>', $code, '</code>';
        echo '<title>', $cd['title'], '</title>';
        echo '<url>', $cd['url'], '</url>';
        echo '<teacher>', $cd['teacher'], '</teacher>';
        echo '<language>', $cd['language'], '</language>';
        echo '</course>';
    }
}
echo '</courseslist>';