<?php namespace Zotlabs\Storage; use Sabre\DAV; /** * @brief This class represents a file in DAV. * * It provides all functions to work with files in Red's cloud through DAV protocol. * * @extends \\Sabre\\DAV\\Node * @implements \\Sabre\\DAV\\IFile * * @link http://github.com/friendica/red * @license http://opensource.org/licenses/mit-license.php The MIT License (MIT) */ class File extends DAV\Node implements DAV\IFile { /** * The file from attach table. * * @var array $data * * data * * flags * * filename (string) * * filetype (string) */ private $data; /** * @see \\Sabre\\DAV\\Auth\\Backend\\BackendInterface * @var \\Zotlabs\\Storage\\BasicAuth $auth */ private $auth; /** * @var string $name */ private $name; /** * Sets up the node, expects a full path name. * * @param string $name * @param array $data from attach table * @param &$auth */ public function __construct($name, $data, &$auth) { $this->name = $name; $this->data = $data; $this->auth = $auth; // logger(print_r($this->data, true), LOGGER_DATA); } /** * @brief Returns the name of the file. * * @return string */ public function getName() { //logger(basename($this->name), LOGGER_DATA); return basename($this->name); } /** * @brief Renames the file. * * @throw "\Sabre\DAV\Exception\Forbidden" * @param string $newName The new name of the file. * @return void */ public function setName($newName) { logger('old name ' . basename($this->name) . ' -> ' . $newName, LOGGER_DATA); if ((! $newName) || (! $this->auth->owner_id) || (! perm_is_allowed($this->auth->owner_id, $this->auth->observer, 'write_storage'))) { logger('permission denied '. $newName); throw new DAV\Exception\Forbidden('Permission denied.'); } $newName = str_replace('/', '%2F', $newName); $r = q("UPDATE attach SET filename = '%s' WHERE hash = '%s' AND id = %d", dbesc($newName), dbesc($this->data['hash']), intval($this->data['id']) ); $x = attach_syspaths($this->auth->owner_id,$this->data['hash']); $y = q("update attach set display_path = '%s where hash = '%s' and uid = %d", dbesc($x['path']), dbesc($this->data['hash']), intval($this->auth->owner_id) ); if($this->data->is_photo) { $r = q("update photo set filename = '%s', display_path = '%s' where resource_id = '%s' and uid = %d", dbesc($newName), dbesc($x['path']), dbesc($this->data['hash']), intval($this->auth->owner_id) ); } $ch = channelx_by_n($this->auth->owner_id); if($ch) { $sync = attach_export_data($ch,$this->data['hash']); if($sync) build_sync_packet($ch['channel_id'],array('file' => array($sync))); } } /** * @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 = ''; $os_path = ''; $r = q("SELECT flags, folder, os_storage, os_path, display_path, filename, is_photo FROM attach WHERE hash = '%s' AND uid = %d LIMIT 1", dbesc($this->data['hash']), intval($c[0]['channel_id']) ); if ($r) { $os_path = $r[0]['os_path']; $display_path = $r[0]['display_path']; $filename = $r[0]['filename']; if (intval($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)) { $is_photo = 1; } // If we know it's a photo, over-ride the type in case the source system could not determine what it was if($is_photo) { q("update attach set filetype = '%s' where hash = '%s' and uid = %d", dbesc($gis['mime']), dbesc($this->data['hash']), intval($this->data['uid']) ); } } 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_syspath' => $f, 'os_path' => $os_path, 'display_path' => $display_path, 'filename' => $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; } } \Zotlabs\Daemon\Master::Summon([ 'Thumbnail' , $this->data['hash'] ]); $sync = attach_export_data($c[0],$this->data['hash']); if($sync) build_sync_packet($c[0]['channel_id'],array('file' => array($sync))); } /** * @brief Returns the raw data. * * @return string */ public function get() { logger('get file ' . basename($this->name), LOGGER_DEBUG); logger('os_path: ' . $this->os_path, LOGGER_DATA); $r = q("SELECT content, flags, os_storage, filename, filetype FROM attach WHERE hash = '%s' AND uid = %d LIMIT 1", dbesc($this->data['hash']), intval($this->data['uid']) ); if ($r) { // @todo this should be a global definition $unsafe_types = array('text/html', 'text/css', 'application/javascript'); if (in_array($r[0]['filetype'], $unsafe_types) && (! channel_codeallowed($this->data['uid']))) { header('Content-disposition: attachment; filename="' . $r[0]['filename'] . '"'); header('Content-type: text/plain'); } if (intval($r[0]['os_storage'])) { $x = dbunescbin($r[0]['content']); if(strpos($x,'store') === false) $f = 'store/' . $this->auth->owner_nick . '/' . (($this->os_path) ? $this->os_path . '/' : '') . $x; else $f = $x; return @fopen($f, 'rb'); } return dbunescbin($r[0]['content']); } } /** * @brief Returns the ETag for a file. * * An ETag is a unique identifier representing the current version of the file. * If the file changes, the ETag MUST change. * The ETag is an arbitrary string, but MUST be surrounded by double-quotes. * * Return null if the ETag can not effectively be determined. * * @return null|string */ public function getETag() { $ret = null; if ($this->data['hash']) { $ret = '"' . $this->data['hash'] . '"'; } return $ret; } /** * @brief Returns the mime-type for a file. * * If null is returned, we'll assume application/octet-stream * * @return mixed */ public function getContentType() { // @todo this should be a global definition. $unsafe_types = array('text/html', 'text/css', 'application/javascript'); if (in_array($this->data['filetype'], $unsafe_types) && (! channel_codeallowed($this->data['uid']))) { return 'text/plain'; } return $this->data['filetype']; } /** * @brief Returns the size of the node, in bytes. * * @return int * filesize in bytes */ public function getSize() { return $this->data['filesize']; } /** * @brief Returns the last modification time for the file, as a unix * timestamp. * * @return int last modification time in UNIX timestamp */ public function getLastModified() { return datetime_convert('UTC', 'UTC', $this->data['edited'], 'U'); } /** * @brief Delete the file. * * This method checks the permissions and then calls attach_delete() function * to actually remove the file. * * @throw "\Sabre\DAV\Exception\Forbidden" */ public function delete() { logger('delete file ' . basename($this->name), LOGGER_DEBUG); if((! $this->auth->owner_id) || (! perm_is_allowed($this->auth->owner_id, $this->auth->observer, 'write_storage'))) { throw new DAV\Exception\Forbidden('Permission denied.'); } if($this->auth->owner_id !== $this->auth->channel_id) { if (($this->auth->observer !== $this->data['creator']) || intval($this->data['is_dir'])) { throw new DAV\Exception\Forbidden('Permission denied.'); } } if(get_pconfig($this->auth->owner_id,'system','os_delete_prohibit') && \App::$module == 'dav') { throw new DAV\Exception\Forbidden('Permission denied.'); } attach_delete($this->auth->owner_id, $this->data['hash']); $ch = channelx_by_n($this->auth->owner_id); if($ch) { $sync = attach_export_data($ch, $this->data['hash'], true); if($sync) build_sync_packet($ch['channel_id'], array('file' => array($sync))); } } }