MEDIA.php

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<?php
/*
 * Nucleus: PHP/MySQL Weblog CMS (http://nucleuscms.org/)
 * Copyright (C) 2002-2007 The Nucleus Group
 *
 * This program 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 2
 * of the License, or (at your option) any later version.
 * (see nucleus/documentation/index.html#license for more info)
 */
class MEDIA {

        function getCollectionList() {
                global $member, $DIR_MEDIA;

                $collections = array();

                // add private directory for member
                $collections[$member->getID()] = 'Private Collection';

                // add global collections
                if (!is_dir($DIR_MEDIA)) return $collections;

                $dirhandle = opendir($DIR_MEDIA);
                while ($dirname = readdir($dirhandle)) {
                        // only add non-numeric (numeric=private) dirs
                        if (@is_dir($DIR_MEDIA . $dirname) && ($dirname != '.') && ($dirname != '..') && ($dirname != 'CVS') && (!is_numeric($dirname)))  {
                                $collections[$dirname] = $dirname;
                        }
                }
                closedir($dirhandle);

                return $collections;

        }

        function getMediaListByCollection($collection, $filter = '') {
                global $DIR_MEDIA;

                $filelist = array();

                // 1. go through all objects and add them to the filelist

                $mediadir = $DIR_MEDIA . $collection . '/';

                // return if dir does not exist
                if (!is_dir($mediadir)) return $filelist;

                $dirhandle = opendir($mediadir);
                while ($filename = readdir($dirhandle)) {
                        // only add files that match the filter
                        if (!@is_dir($filename) && MEDIA::checkFilter($filename, $filter))
                                array_push($filelist, new MEDIAOBJECT($collection, $filename, filemtime($mediadir . $filename)));
                }
                closedir($dirhandle);

                // sort array so newer files are shown first
                usort($filelist, 'sort_media');

                return $filelist;
        }

        function checkFilter($strText, $strFilter) {
                if ($strFilter == '')
                        return 1;
                else
                        return is_integer(strpos(strtolower($strText), strtolower($strFilter)));
        }

        function isValidCollection($collectionName) {
                global $member, $DIR_MEDIA;

                // private collections only accept uploads from their owners
                if (is_numeric($collectionName))
                        return ($member->getID() == $collectionName);

                // other collections should exists and be writable
                $collectionDir = $DIR_MEDIA . $collectionName;
                return (@is_dir($collectionDir) || @is_writable($collectionDir));
        }

        function addMediaObject($collection, $uploadfile, $filename) {
                global $DIR_MEDIA, $manager;

                $manager->notify('PreMediaUpload',array('collection' => &$collection, 'uploadfile' => $uploadfile, 'filename' => &$filename));

                // don't allow uploads to unknown or forbidden collections
                if (!MEDIA::isValidCollection($collection))
                        return _ERROR_DISALLOWED;

                // check dir permissions (try to create dir if it does not exist)
                $mediadir = $DIR_MEDIA . $collection;

                // try to create new private media directories if needed
                if (!@is_dir($mediadir) && is_numeric($collection)) {
                        $oldumask = umask(0000);
                        if (!@mkdir($mediadir, 0777))
                                return _ERROR_BADPERMISSIONS;
                        umask($oldumask);
                }

                // if dir still not exists, the action is disallowed
                if (!@is_dir($mediadir))
                        return _ERROR_DISALLOWED;

                if (!is_writeable($mediadir))
                        return _ERROR_BADPERMISSIONS;

                // add trailing slash (don't add it earlier since it causes mkdir to fail on some systems)
                $mediadir .= '/';

                if (file_exists($mediadir . $filename))
                        return _ERROR_UPLOADDUPLICATE;

                // move file to directory
                if (is_uploaded_file($uploadfile)) {
                        if (!@move_uploaded_file($uploadfile, $mediadir . $filename))
                                return _ERROR_UPLOADMOVEP;
                } else {
                        if (!copy($uploadfile, $mediadir . $filename))
                                return _ERROR_UPLOADCOPY ;
                }

                // chmod uploaded file
                $oldumask = umask(0000);
                @chmod($mediadir . $filename, 0644);
                umask($oldumask);

                $manager->notify('PostMediaUpload',array('collection' => $collection, 'mediadir' => $mediadir, 'filename' => $filename));

                return '';

        }

        function addMediaObjectRaw($collection, $filename, &$data) {
                global $DIR_MEDIA;

                // check dir permissions (try to create dir if it does not exist)
                $mediadir = $DIR_MEDIA . $collection;

                // try to create new private media directories if needed
                if (!@is_dir($mediadir) && is_numeric($collection)) {
                        $oldumask = umask(0000);
                        if (!@mkdir($mediadir, 0777))
                                return _ERROR_BADPERMISSIONS;
                        umask($oldumask);
                }

                // if dir still not exists, the action is disallowed
                if (!@is_dir($mediadir))
                        return _ERROR_DISALLOWED;

                if (!is_writeable($mediadir))
                        return _ERROR_BADPERMISSIONS;

                // add trailing slash (don't add it earlier since it causes mkdir to fail on some systems)
                $mediadir .= '/';

                if (file_exists($mediadir . $filename))
                        return _ERROR_UPLOADDUPLICATE;

                // create file
                $fh = @fopen($mediadir . $filename, 'wb');
                if (!$fh)
                        return _ERROR_UPLOADFAILED;
                $ok = @fwrite($fh, $data);
                @fclose($fh);
                if (!$ok)
                        return _ERROR_UPLOADFAILED;

                // chmod uploaded file
                $oldumask = umask(0000);
                @chmod($mediadir . $filename, 0644);
                umask($oldumask);

                return '';

        }

}

class MEDIAOBJECT {

        var $private;
        var $collection;
        var $filename;
        var $timestamp;

        function MEDIAOBJECT($collection, $filename, $timestamp) {
                $this->private = is_numeric($collection);
                $this->collection = $collection;
                $this->filename = $filename;
                $this->timestamp = $timestamp;
        }

}

function sort_media($a, $b) {
        if ($a->timestamp == $b->timestamp) return 0;
        return ($a->timestamp > $b->timestamp) ? -1 : 1;
}

?>

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