Proyectos de Subversion Moodle

<?php

// This file is part of Moodle - http://moodle.org/

//

// Moodle is free software: you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// (at your option) any later version.

//

// Moodle is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

//

// You should have received a copy of the GNU General Public License

// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**

 * This plugin is used to access webdav files

 *

 * @since Moodle 2.0

 * @package    repository_webdav

 * @copyright  2010 Dongsheng Cai {@link http://dongsheng.org}

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

require_once($CFG->dirroot . '/repository/lib.php');

require_once($CFG->libdir.'/webdavlib.php');

/**

 * repository_webdav class

 *

 * @since Moodle 2.0

 * @package    repository_webdav

 * @copyright  2009 Dongsheng Cai {@link http://dongsheng.org}

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

class repository_webdav extends repository {

    /** @var string webdav type. */

    protected $webdav_type;

    /** @var mixed webdav port. */

    protected $webdav_port;

    /** @var string webdav host. */

    protected $webdav_host;

    /** @var webdav_client webdav client. */

    protected $dav;

    public function __construct($repositoryid, $context = SYSCONTEXTID, $options = array()) {

        parent::__construct($repositoryid, $context, $options);

        // set up webdav client

        if (empty($this->options['webdav_server'])) {

            return;

        }

        if ($this->options['webdav_auth'] == 'none') {

            $this->options['webdav_auth'] = false;

        }

        if (empty($this->options['webdav_type'])) {

            $this->webdav_type = '';

        } else {

            $this->webdav_type = 'ssl://';

        }

        if (empty($this->options['webdav_port'])) {

            $port = '';

            if (empty($this->webdav_type)) {

                $this->webdav_port = 80;

            } else {

                $this->webdav_port = 443;

                $port = ':443';

            }

        } else {

            $this->webdav_port = $this->options['webdav_port'];

            $port = ':' . $this->webdav_port;

        }

        $this->webdav_host = $this->webdav_type.$this->options['webdav_server'].$port;

        $this->dav = new webdav_client($this->options['webdav_server'], $this->options['webdav_user'],

                $this->options['webdav_password'], $this->options['webdav_auth'], $this->webdav_type);

        $this->dav->port = $this->webdav_port;

        $this->dav->debug = false;

    }

    public function check_login() {

        return true;

    }

    public function get_file($url, $title = '') {

        $url = urldecode($url);

        // Prepare a file with an arbitrary name - cannot be $title because of special chars (cf. MDL-57002).

        $path = $this->prepare_file(uniqid());

        if (!$this->dav->open()) {

            return false;

        }

        $webdavpath = rtrim('/'.ltrim($this->options['webdav_path'], '/ '), '/ '); // without slash in the end

        $this->dav->get_file($webdavpath. $url, $path);

        return array('path'=>$path);

    }

    public function global_search() {

        return false;

    }

    public function get_listing($path='', $page = '') {

        global $CFG, $OUTPUT;

        $list = array();

        $ret  = array();

        $ret['dynload'] = true;

        $ret['nosearch'] = true;

        $ret['nologin'] = true;

        $ret['path'] = array(array('name'=>get_string('webdav', 'repository_webdav'), 'path'=>''));

        $ret['list'] = array();

        if (!$this->dav->open()) {

            return $ret;

        }

        $webdavpath = rtrim('/'.ltrim($this->options['webdav_path'], '/ '), '/ '); // without slash in the end

        if (empty($path) || $path =='/') {

            $path = '/';

        } else {

            $chunks = preg_split('|/|', trim($path, '/'));

            for ($i = 0; $i < count($chunks); $i++) {

                $ret['path'][] = array(

                    'name' => urldecode($chunks[$i]),

                    'path' => '/'. join('/', array_slice($chunks, 0, $i+1)). '/'

                );

            }

        }

        $dir = $this->dav->ls($webdavpath. urldecode($path));

        if (!is_array($dir)) {

            return $ret;

        }

        $folders = array();

        $files = array();

        foreach ($dir as $v) {

            if (!empty($v['lastmodified'])) {

                $v['lastmodified'] = strtotime($v['lastmodified']);

            } else {

                $v['lastmodified'] = null;

            }

            // Remove the server URL from the path (if present), otherwise links will not work - MDL-37014

            $server = preg_quote($this->options['webdav_server']);

            $v['href'] = preg_replace("#https?://{$server}#", '', $v['href']);

            // Extracting object title from absolute path

            $v['href'] = substr(urldecode($v['href']), strlen($webdavpath));

            $title = substr($v['href'], strlen($path));

            if (!empty($v['resourcetype']) && $v['resourcetype'] == 'collection') {

                // A folder.

                if ($path != $v['href']) {

                    $folders[strtoupper($title)] = array(

                        'title' => rtrim($title, '/'),

                        'thumbnail' => $OUTPUT->image_url(file_folder_icon())->out(false),

                        'children' => array(),

                        'datemodified' => $v['lastmodified'],

                        'path' => $v['href'],

                    );

                }

            }else{

                // A file.

                $size = !empty($v['getcontentlength'])? $v['getcontentlength']:'';

                $files[strtoupper($title)] = array(

                    'title' => $title,

                    'thumbnail' => $OUTPUT->image_url(file_extension_icon($title))->out(false),

                    'size' => $size,

                    'datemodified' => $v['lastmodified'],

                    'source' => $v['href'],

                );

            }

        }

        ksort($files);

        ksort($folders);

        $ret['list'] = array_merge($folders, $files);

        return $ret;

    }

    public static function get_instance_option_names() {

        return array('webdav_type', 'webdav_server', 'webdav_port', 'webdav_path', 'webdav_user', 'webdav_password', 'webdav_auth');

    }

    public static function instance_config_form($mform) {

        $choices = array(0 => get_string('http', 'repository_webdav'), 1 => get_string('https', 'repository_webdav'));

        $mform->addElement('select', 'webdav_type', get_string('webdav_type', 'repository_webdav'), $choices);

        $mform->addRule('webdav_type', get_string('required'), 'required', null, 'client');

        $mform->addElement('text', 'webdav_server', get_string('webdav_server', 'repository_webdav'), array('size' => '40'));

        $mform->addRule('webdav_server', get_string('required'), 'required', null, 'client');

        $mform->setType('webdav_server', PARAM_HOST);

        $mform->addElement('text', 'webdav_path', get_string('webdav_path', 'repository_webdav'), array('size' => '40'));

        $mform->addRule('webdav_path', get_string('required'), 'required', null, 'client');

        $mform->setType('webdav_path', PARAM_PATH);

        $choices = array();

        $choices['none'] = get_string('none');

        $choices['basic'] = get_string('webdavbasicauth', 'repository_webdav');

        $choices['digest'] = get_string('webdavdigestauth', 'repository_webdav');

        $mform->addElement('select', 'webdav_auth', get_string('authentication', 'admin'), $choices);

        $mform->addRule('webdav_auth', get_string('required'), 'required', null, 'client');

        $mform->addElement('text', 'webdav_port', get_string('webdav_port', 'repository_webdav'), array('size' => '40'));

        $mform->setType('webdav_port', PARAM_INT);

        $mform->addElement('text', 'webdav_user', get_string('webdav_user', 'repository_webdav'), array('size' => '40'));

        $mform->setType('webdav_user', PARAM_RAW_TRIMMED); // Not for us to clean.

        $mform->addElement('passwordunmask', 'webdav_password', get_string('webdav_password', 'repository_webdav'),

            array('size' => '40'));

    }

    public function supported_returntypes() {

        return (FILE_INTERNAL | FILE_EXTERNAL);

    }

    /**

     * Is this repository accessing private data?

     *

     * @return bool

     */

    public function contains_private_data() {

        return false;

    }

}