function get()
 {
     if (!local_channel()) {
         notice(t('Permission denied.') . EOL);
         return;
     }
     $channel = \App::get_channel();
     $is_owner = local_channel() && local_channel() == $channel['channel_id'];
     //check for updated items and remove them
     require_once 'include/sharedwithme.php';
     apply_updates();
     //drop single file - localuser
     if (argc() > 2 && argv(2) === 'drop') {
         $id = intval(argv(1));
         q("DELETE FROM item WHERE id = %d AND uid = %d", intval($id), intval(local_channel()));
         goaway(z_root() . '/sharedwithme');
     }
     //drop all files - localuser
     if (argc() > 1 && argv(1) === 'dropall') {
         q("DELETE FROM item WHERE verb = '%s' AND obj_type = '%s' AND uid = %d", dbesc(ACTIVITY_POST), dbesc(ACTIVITY_OBJ_FILE), intval(local_channel()));
         goaway(z_root() . '/sharedwithme');
     }
     //list files
     $r = q("SELECT id, uid, object, item_unseen FROM item WHERE verb = '%s' AND obj_type = '%s' AND uid = %d AND owner_xchan != '%s'", dbesc(ACTIVITY_POST), dbesc(ACTIVITY_OBJ_FILE), intval(local_channel()), dbesc($channel['channel_hash']));
     $items = array();
     $ids = '';
     if ($r) {
         foreach ($r as $rr) {
             $object = json_decode($rr['object'], true);
             $item = array();
             $item['id'] = $rr['id'];
             $item['objfiletype'] = $object['filetype'];
             $item['objfiletypeclass'] = getIconFromType($object['filetype']);
             $item['objurl'] = rawurldecode(get_rel_link($object['link'], 'alternate')) . '?f=&zid=' . $channel['xchan_addr'];
             $item['objfilename'] = $object['filename'];
             $item['objfilesize'] = userReadableSize($object['filesize']);
             $item['objedited'] = $object['edited'];
             $item['unseen'] = $rr['item_unseen'];
             $items[] = $item;
             if ($item['unseen'] > 0) {
                 $ids .= " '" . $rr['id'] . "',";
             }
         }
     }
     if ($ids) {
         //remove trailing ,
         $ids = rtrim($ids, ",");
         q("UPDATE item SET item_unseen = 0 WHERE id IN ( {$ids} ) AND uid = %d", intval(local_channel()));
     }
     $o = profile_tabs($a, $is_owner, $channel['channel_address']);
     $o .= replace_macros(get_markup_template('sharedwithme.tpl'), array('$header' => t('Files: shared with me'), '$name' => t('Name'), '$label_new' => t('NEW'), '$size' => t('Size'), '$lastmod' => t('Last Modified'), '$dropall' => t('Remove all files'), '$drop' => t('Remove this file'), '$items' => $items));
     return $o;
 }

 /**
  * @brief Creates a form to add new folders and upload files.
  *
  * @param \Sabre\DAV\INode $node
  * @param string &$output
  */
 public function htmlActionsPanel(DAV\INode $node, &$output)
 {
     if (!$node instanceof DAV\ICollection) {
         return;
     }
     // We also know fairly certain that if an object is a non-extended
     // SimpleCollection, we won't need to show the panel either.
     if (get_class($node) === 'Sabre\\DAV\\SimpleCollection') {
         return;
     }
     // Storage and quota for the account (all channels of the owner of this directory)!
     $limit = engr_units_to_bytes(service_class_fetch($owner, 'attach_upload_limit'));
     $r = q("SELECT SUM(filesize) AS total FROM attach WHERE aid = %d", intval($this->auth->channel_account_id));
     $used = $r[0]['total'];
     if ($used) {
         $quotaDesc = t('You are using %1$s of your available file storage.');
         $quotaDesc = sprintf($quotaDesc, userReadableSize($used));
     }
     if ($limit && $used) {
         $quotaDesc = t('You are using %1$s of %2$s available file storage. (%3$s%)');
         $quotaDesc = sprintf($quotaDesc, userReadableSize($used), userReadableSize($limit), round($used / $limit, 1) * 100);
     }
     // prepare quota for template
     $quota = array();
     $quota['used'] = $used;
     $quota['limit'] = $limit;
     $quota['desc'] = $quotaDesc;
     $quota['warning'] = $limit && round($used / $limit, 1) * 100 >= 90 ? t('WARNING:') : '';
     // 10485760 bytes = 100MB
     $output .= replace_macros(get_markup_template('cloud_actionspanel.tpl'), array('$folder_header' => t('Create new folder'), '$folder_submit' => t('Create'), '$upload_header' => t('Upload file'), '$upload_submit' => t('Upload'), '$quota' => $quota));
 }

function theme_attachments(&$item)
{
    $arr = json_decode_plus($item['attach']);
    if (is_array($arr) && count($arr)) {
        $attaches = array();
        foreach ($arr as $r) {
            $icon = getIconFromType($r['type']);
            $label = $r['title'] ? urldecode(htmlspecialchars($r['title'], ENT_COMPAT, 'UTF-8')) : t('Unknown Attachment');
            //some feeds provide an attachment where title an empty space
            if ($label == ' ') {
                $label = t('Unknown Attachment');
            }
            $title = t('Size') . ' ' . ($r['length'] ? userReadableSize($r['length']) : t('unknown'));
            require_once 'include/identity.php';
            if (is_foreigner($item['author_xchan'])) {
                $url = $r['href'];
            } else {
                $url = z_root() . '/magic?f=&hash=' . $item['author_xchan'] . '&dest=' . $r['href'] . '/' . $r['revision'];
            }
            //$s .= '<a href="' . $url . '" title="' . $title . '" class="attachlink"  >' . $icon . '</a>';
            $attaches[] = array('label' => $label, 'url' => $url, 'icon' => $icon, 'title' => $title);
        }
        $s = replace_macros(get_markup_template('item_attach.tpl'), array('$attaches' => $attaches));
    }
    return $s;
}

 /**
  * @brief Creates a new file in the directory.
  *
  * Data will either be supplied as a stream resource, or in certain cases
  * as a string. Keep in mind that you may have to support either.
  *
  * After successful creation of the file, you may choose to return the ETag
  * of the new file here.
  *
  * @throw \Sabre\DAV\Exception\Forbidden
  * @param string $name Name of the file
  * @param resource|string $data Initial payload
  * @return null|string ETag
  */
 public function createFile($name, $data = null)
 {
     logger('create file in directory ' . $name, LOGGER_DEBUG);
     if (!$this->auth->owner_id) {
         logger('permission denied ' . $name);
         throw new DAV\Exception\Forbidden('Permission denied.');
     }
     if (!perm_is_allowed($this->auth->owner_id, $this->auth->observer, 'write_storage')) {
         logger('permission denied ' . $name);
         throw new DAV\Exception\Forbidden('Permission denied.');
     }
     $mimetype = z_mime_content_type($name);
     $c = q("SELECT * FROM channel WHERE channel_id = %d AND channel_removed = 0 LIMIT 1", intval($this->auth->owner_id));
     if (!$c) {
         logger('no channel');
         throw new DAV\Exception\Forbidden('Permission denied.');
     }
     $filesize = 0;
     $hash = random_string();
     $f = 'store/' . $this->auth->owner_nick . '/' . ($this->os_path ? $this->os_path . '/' : '') . $hash;
     $direct = null;
     if ($this->folder_hash) {
         $r = q("select * from attach where hash = '%s' and is_dir = 1 and uid = %d limit 1", dbesc($this->folder_hash), intval($c[0]['channel_id']));
         if ($r) {
             $direct = $r[0];
         }
     }
     if ($direct && ($direct['allow_cid'] || $direct['allow_gid'] || $direct['deny_cid'] || $direct['deny_gid'])) {
         $allow_cid = $direct['allow_cid'];
         $allow_gid = $direct['allow_gid'];
         $deny_cid = $direct['deny_cid'];
         $deny_gid = $direct['deny_gid'];
     } else {
         $allow_cid = $c[0]['channel_allow_cid'];
         $allow_gid = $c[0]['channel_allow_gid'];
         $deny_cid = $c[0]['channel_deny_cid'];
         $deny_gid = $c[0]['channel_deny_gid'];
     }
     $r = q("INSERT INTO attach ( aid, uid, hash, creator, filename, folder, os_storage, filetype, filesize, revision, is_photo, content, created, edited, allow_cid, allow_gid, deny_cid, deny_gid )\n\t\t\tVALUES ( %d, %d, '%s', '%s', '%s', '%s', '%s', '%s', %d, %d, %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s' ) ", intval($c[0]['channel_account_id']), intval($c[0]['channel_id']), dbesc($hash), dbesc($this->auth->observer), dbesc($name), dbesc($this->folder_hash), intval(1), dbesc($mimetype), intval($filesize), intval(0), intval($is_photo), dbesc($f), dbesc(datetime_convert()), dbesc(datetime_convert()), dbesc($allow_cid), dbesc($allow_gid), dbesc($deny_cid), dbesc($deny_gid));
     // returns the number of bytes that were written to the file, or FALSE on failure
     $size = file_put_contents($f, $data);
     // delete attach entry if file_put_contents() failed
     if ($size === false) {
         logger('file_put_contents() failed to ' . $f);
         attach_delete($c[0]['channel_id'], $hash);
         return;
     }
     // returns now
     $edited = datetime_convert();
     $is_photo = 0;
     $x = @getimagesize($f);
     logger('getimagesize: ' . print_r($x, true), LOGGER_DATA);
     if ($x && ($x[2] === IMAGETYPE_GIF || $x[2] === IMAGETYPE_JPEG || $x[2] === IMAGETYPE_PNG)) {
         $is_photo = 1;
     }
     // updates entry with filesize and timestamp
     $d = q("UPDATE attach SET filesize = '%s', is_photo = %d, edited = '%s' WHERE hash = '%s' AND uid = %d", dbesc($size), intval($is_photo), dbesc($edited), dbesc($hash), intval($c[0]['channel_id']));
     // update the folder's lastmodified timestamp
     $e = q("UPDATE attach SET edited = '%s' WHERE hash = '%s' AND uid = %d", dbesc($edited), dbesc($this->folder_hash), intval($c[0]['channel_id']));
     $maxfilesize = get_config('system', 'maxfilesize');
     if ($maxfilesize && $size > $maxfilesize) {
         attach_delete($c[0]['channel_id'], $hash);
         return;
     }
     // check against service class quota
     $limit = engr_units_to_bytes(service_class_fetch($c[0]['channel_id'], 'attach_upload_limit'));
     if ($limit !== false) {
         $x = q("SELECT SUM(filesize) AS total FROM attach WHERE aid = %d ", intval($c[0]['channel_account_id']));
         if ($x && $x[0]['total'] + $size > $limit) {
             logger('service class limit exceeded for ' . $c[0]['channel_name'] . ' total usage is ' . $x[0]['total'] . ' limit is ' . userReadableSize($limit));
             attach_delete($c[0]['channel_id'], $hash);
             return;
         }
     }
     if ($is_photo) {
         $album = '';
         if ($this->folder_hash) {
             $f1 = q("select filename from attach WHERE hash = '%s' AND uid = %d", dbesc($this->folder_hash), intval($c[0]['channel_id']));
             if ($f1) {
                 $album = $f1[0]['filename'];
             }
         }
         require_once 'include/photos.php';
         $args = array('resource_id' => $hash, 'album' => $album, 'os_path' => $f, 'filename' => $name, 'getimagesize' => $x, 'directory' => $direct);
         $p = photo_upload($c[0], \App::get_observer(), $args);
     }
//.........这里部分代码省略.........

/**
 * @brief Some PHP configuration checks.
 *
 * @todo Change how we display such informational text. Add more description
 *       how to change them.
 *
 * @param[out] array &$checks
 */
function check_phpconfig(&$checks)
{
    require_once 'include/environment.php';
    $help = '';
    $result = getPhpiniUploadLimits();
    $help = sprintf(t('Your max allowed total upload size is set to %s. Maximum size of one file to upload is set to %s. You are allowed to upload up to %d files at once.'), userReadableSize($result['post_max_size']), userReadableSize($result['max_upload_filesize']), $result['max_file_uploads']);
    $help .= '<br>' . t('You can adjust these settings in the servers php.ini.');
    check_add($checks, t('PHP upload limits'), true, false, $help);
}

//.........这里部分代码省略.........
                     case '{urn:ietf:params:xml:ns:caldav}schedule-outbox':
                         $type[$k] = t('Schedule Outbox');
                         break;
                     case '{http://calendarserver.org/ns/}calendar-proxy-read':
                         $type[$k] = 'Proxy-Read';
                         break;
                     case '{http://calendarserver.org/ns/}calendar-proxy-write':
                         $type[$k] = 'Proxy-Write';
                         break;
                 }
             }
             $type = implode(', ', $type);
         }
         // If no resourcetype was found, we attempt to use
         // the contenttype property
         if (!$type && isset($file[200]['{DAV:}getcontenttype'])) {
             $type = $file[200]['{DAV:}getcontenttype'];
         }
         if (!$type) {
             $type = t('Unknown');
         }
         $size = isset($file[200]['{DAV:}getcontentlength']) ? (int) $file[200]['{DAV:}getcontentlength'] : '';
         $lastmodified = isset($file[200]['{DAV:}getlastmodified']) ? $file[200]['{DAV:}getlastmodified']->getTime()->format('Y-m-d H:i:s') : '';
         $fullPath = DAV\URLUtil::encodePath('/' . trim($this->server->getBaseUri() . ($path ? $path . '/' : '') . $name, '/'));
         $displayName = isset($file[200]['{DAV:}displayname']) ? $file[200]['{DAV:}displayname'] : $name;
         $displayName = $this->escapeHTML($displayName);
         $type = $this->escapeHTML($type);
         $icon = '';
         if ($this->enableAssets) {
             $node = $this->server->tree->getNodeForPath(($path ? $path . '/' : '') . $name);
             foreach (array_reverse($this->iconMap) as $class => $iconName) {
                 if ($node instanceof $class) {
                     $icon = '<a href="' . $fullPath . '"><img src="' . $this->getAssetUrl($iconName . $this->iconExtension) . '" alt="" width="24"></a>';
                     break;
                 }
             }
         }
         $parentHash = '';
         $owner = $this->auth->owner_id;
         $splitPath = split('/', $fullPath);
         if (count($splitPath) > 3) {
             for ($i = 3; $i < count($splitPath); $i++) {
                 $attachName = urldecode($splitPath[$i]);
                 $attachHash = $this->findAttachHash($owner, $parentHash, $attachName);
                 $parentHash = $attachHash;
             }
         }
         $attachIcon = "";
         // "<a href=\"attach/".$attachHash."\" title=\"".$displayName."\"><i class=\"icon-download\"></i></a>";
         // put the array for this file together
         $ft['attachId'] = $this->findAttachIdByHash($attachHash);
         $ft['fileStorageUrl'] = substr($fullPath, 0, strpos($fullPath, "cloud/")) . "filestorage/" . $this->auth->getCurrentUser();
         $ft['icon'] = $icon;
         $ft['attachIcon'] = $size ? $attachIcon : '';
         // @todo Should this be an item value, not a global one?
         $ft['is_owner'] = $is_owner;
         $ft['fullPath'] = $fullPath;
         $ft['displayName'] = $displayName;
         $ft['type'] = $type;
         $ft['size'] = $size;
         $ft['sizeFormatted'] = userReadableSize($size);
         $ft['lastmodified'] = $lastmodified ? datetime_convert('UTC', date_default_timezone_get(), $lastmodified) : '';
         $ft['iconFromType'] = getIconFromType($type);
         $f[] = $ft;
     }
     // Storage and quota for the account (all channels of the owner of this directory)!
     $limit = service_class_fetch($owner, 'attach_upload_limit');
     $r = q("SELECT SUM(filesize) AS total FROM attach WHERE aid = %d", intval($this->auth->channel_account_id));
     $used = $r[0]['total'];
     if ($used) {
         $quotaDesc = t('%1$s used');
         $quotaDesc = sprintf($quotaDesc, userReadableSize($used));
     }
     if ($limit && $used) {
         $quotaDesc = t('%1$s used of %2$s (%3$s&#37;)');
         $quotaDesc = sprintf($quotaDesc, userReadableSize($used), userReadableSize($limit), round($used / $limit, 1));
     }
     // prepare quota for template
     $quota = array();
     $quota['used'] = $used;
     $quota['limit'] = $limit;
     $quota['desc'] = $quotaDesc;
     $output = '';
     if ($this->enablePost) {
         $this->server->broadcastEvent('onHTMLActionsPanel', array($parent, &$output));
     }
     $html .= replace_macros(get_markup_template('cloud.tpl'), array('$header' => t('Files') . ": " . $this->escapeHTML($path) . "/", '$quota' => $quota, '$total' => t('Total'), '$actionspanel' => $output, '$shared' => t('Shared'), '$create' => t('Create'), '$upload' => t('Upload'), '$is_owner' => $is_owner, '$parentpath' => $parentpath, '$entries' => $f, '$name' => t('Name'), '$type' => t('Type'), '$size' => t('Size'), '$lastmod' => t('Last Modified'), '$parent' => t('parent'), '$edit' => t('Edit'), '$delete' => t('Delete'), '$nick' => $this->auth->getCurrentUser()));
     $a = get_app();
     $a->page['content'] = $html;
     load_pdl($a);
     $theme_info_file = "view/theme/" . current_theme() . "/php/theme.php";
     if (file_exists($theme_info_file)) {
         require_once $theme_info_file;
         if (function_exists(str_replace('-', '_', current_theme()) . '_init')) {
             $func = str_replace('-', '_', current_theme()) . '_init';
             $func($a);
         }
     }
     construct_page($a);
 }

 /**
  * @brief Creates a form to add new folders and upload files.
  *
  * @param \Sabre\DAV\INode $node
  * @param string &$output
  */
 public function htmlActionsPanel(DAV\INode $node, &$output, $path)
 {
     if (!$node instanceof DAV\ICollection) {
         return;
     }
     // We also know fairly certain that if an object is a non-extended
     // SimpleCollection, we won't need to show the panel either.
     if (get_class($node) === 'Sabre\\DAV\\SimpleCollection') {
         return;
     }
     require_once 'include/acl_selectors.php';
     $aclselect = null;
     $lockstate = '';
     if ($this->auth->owner_id) {
         $channel = channelx_by_n($this->auth->owner_id);
         if ($channel) {
             $acl = new \Zotlabs\Access\AccessList($channel);
             $channel_acl = $acl->get();
             $lockstate = $acl->is_private() ? 'lock' : 'unlock';
             $aclselect = local_channel() == $this->auth->owner_id ? populate_acl($channel_acl, false, \Zotlabs\Lib\PermissionDescription::fromGlobalPermission('view_storage')) : '';
         }
     }
     // Storage and quota for the account (all channels of the owner of this directory)!
     $limit = engr_units_to_bytes(service_class_fetch($owner, 'attach_upload_limit'));
     $r = q("SELECT SUM(filesize) AS total FROM attach WHERE aid = %d", intval($this->auth->channel_account_id));
     $used = $r[0]['total'];
     if ($used) {
         $quotaDesc = t('You are using %1$s of your available file storage.');
         $quotaDesc = sprintf($quotaDesc, userReadableSize($used));
     }
     if ($limit && $used) {
         $quotaDesc = t('You are using %1$s of %2$s available file storage. (%3$s%)');
         $quotaDesc = sprintf($quotaDesc, userReadableSize($used), userReadableSize($limit), round($used / $limit, 1) * 100);
     }
     // prepare quota for template
     $quota = array();
     $quota['used'] = $used;
     $quota['limit'] = $limit;
     $quota['desc'] = $quotaDesc;
     $quota['warning'] = $limit && round($used / $limit, 1) * 100 >= 90 ? t('WARNING:') : '';
     // 10485760 bytes = 100MB
     $path = trim(str_replace('cloud/' . $this->auth->owner_nick, '', $path), '/');
     $output .= replace_macros(get_markup_template('cloud_actionspanel.tpl'), array('$folder_header' => t('Create new folder'), '$folder_submit' => t('Create'), '$upload_header' => t('Upload file'), '$upload_submit' => t('Upload'), '$quota' => $quota, '$channick' => $this->auth->owner_nick, '$aclselect' => $aclselect, '$allow_cid' => acl2json($channel_acl['allow_cid']), '$allow_gid' => acl2json($channel_acl['allow_gid']), '$deny_cid' => acl2json($channel_acl['deny_cid']), '$deny_gid' => acl2json($channel_acl['deny_gid']), '$lockstate' => $lockstate, '$return_url' => \App::$cmd, '$path' => $path, '$folder' => find_folder_hash_by_path($this->auth->owner_id, $path), '$dragdroptext' => t('Drop files here to immediately upload')));
 }

 /**
  * @brief Updates the data of the file.
  *
  * @param resource $data
  * @return void
  */
 public function put($data)
 {
     logger('put file: ' . basename($this->name), LOGGER_DEBUG);
     $size = 0;
     // @todo only 3 values are needed
     $c = q("SELECT * FROM channel WHERE channel_id = %d AND channel_removed = 0 LIMIT 1", intval($this->auth->owner_id));
     $is_photo = false;
     $album = '';
     $r = q("SELECT flags, folder, os_storage, filename, is_photo FROM attach WHERE hash = '%s' AND uid = %d LIMIT 1", dbesc($this->data['hash']), intval($c[0]['channel_id']));
     if ($r) {
         if (intval($r[0]['os_storage'])) {
             $d = q("select folder, content from attach where hash = '%s' and uid = %d limit 1", dbesc($this->data['hash']), intval($c[0]['channel_id']));
             if ($d) {
                 if ($d[0]['folder']) {
                     $f1 = q("select * from attach where is_dir = 1 and hash = '%s' and uid = %d limit 1", dbesc($d[0]['folder']), intval($c[0]['channel_id']));
                     if ($f1) {
                         $album = $f1[0]['filename'];
                         $direct = $f1[0];
                     }
                 }
                 $fname = dbunescbin($d[0]['content']);
                 if (strpos($fname, 'store') === false) {
                     $f = 'store/' . $this->auth->owner_nick . '/' . $fname;
                 } else {
                     $f = $fname;
                 }
                 // @todo check return value and set $size directly
                 @file_put_contents($f, $data);
                 $size = @filesize($f);
                 logger('filename: ' . $f . ' size: ' . $size, LOGGER_DEBUG);
             }
             $gis = @getimagesize($f);
             logger('getimagesize: ' . print_r($gis, true), LOGGER_DATA);
             if ($gis && ($gis[2] === IMAGETYPE_GIF || $gis[2] === IMAGETYPE_JPEG || $gis[2] === IMAGETYPE_PNG)) {
                 $is_photo = 1;
             }
         } else {
             // this shouldn't happen any more
             $r = q("UPDATE attach SET content = '%s' WHERE hash = '%s' AND uid = %d", dbescbin(stream_get_contents($data)), dbesc($this->data['hash']), intval($this->data['uid']));
             $r = q("SELECT length(content) AS fsize FROM attach WHERE hash = '%s' AND uid = %d LIMIT 1", dbesc($this->data['hash']), intval($this->data['uid']));
             if ($r) {
                 $size = $r[0]['fsize'];
             }
         }
     }
     // returns now()
     $edited = datetime_convert();
     $d = q("UPDATE attach SET filesize = '%s', is_photo = %d, edited = '%s' WHERE hash = '%s' AND uid = %d", dbesc($size), intval($is_photo), dbesc($edited), dbesc($this->data['hash']), intval($c[0]['channel_id']));
     if ($is_photo) {
         require_once 'include/photos.php';
         $args = array('resource_id' => $this->data['hash'], 'album' => $album, 'os_path' => $f, 'filename' => $r[0]['filename'], 'getimagesize' => $gis, 'directory' => $direct);
         $p = photo_upload($c[0], \App::get_observer(), $args);
     }
     // update the folder's lastmodified timestamp
     $e = q("UPDATE attach SET edited = '%s' WHERE hash = '%s' AND uid = %d", dbesc($edited), dbesc($r[0]['folder']), intval($c[0]['channel_id']));
     // @todo do we really want to remove the whole file if an update fails
     // because of maxfilesize or quota?
     // There is an Exception "InsufficientStorage" or "PaymentRequired" for
     // our service class from SabreDAV we could use.
     $maxfilesize = get_config('system', 'maxfilesize');
     if ($maxfilesize && $size > $maxfilesize) {
         attach_delete($c[0]['channel_id'], $this->data['hash']);
         return;
     }
     $limit = engr_units_to_bytes(service_class_fetch($c[0]['channel_id'], 'attach_upload_limit'));
     if ($limit !== false) {
         $x = q("select sum(filesize) as total from attach where aid = %d ", intval($c[0]['channel_account_id']));
         if ($x && $x[0]['total'] + $size > $limit) {
             logger('service class limit exceeded for ' . $c[0]['channel_name'] . ' total usage is ' . $x[0]['total'] . ' limit is ' . userReadableSize($limit));
             attach_delete($c[0]['channel_id'], $this->data['hash']);
             return;
         }
     }
     $sync = attach_export_data($c[0], $this->data['hash']);
     if ($sync) {
         build_sync_packet($c[0]['channel_id'], array('file' => array($sync)));
     }
 }