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-rw-r--r--Zotlabs/Storage/File.php322
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diff --git a/Zotlabs/Storage/File.php b/Zotlabs/Storage/File.php
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+<?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
+ * flags
+ * filename (string)
+ * filetype (string)
+ */
+ private $data;
+ /**
+ * @see \Sabre\DAV\Auth\Backend\BackendInterface
+ * @var \RedMatrix\RedDAV\RedBasicAuth
+ */
+ private $auth;
+ /**
+ * @var string
+ */
+ 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 $name The new name of the file.
+ * @return void
+ */
+ public function setName($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'])
+ );
+ }
+
+ /**
+ * @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'])) {
+ $d = q("select folder, data from attach where hash = '%s' and uid = %d limit 1",
+ dbesc($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]['data']);
+ 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
+ $r = q("UPDATE attach SET data = '%s' WHERE hash = '%s' AND uid = %d",
+ dbescbin(stream_get_contents($data)),
+ dbesc($this->data['hash']),
+ intval($this->data['uid'])
+ );
+ $r = q("SELECT length(data) AS fsize FROM attach WHERE hash = '%s' AND uid = %d LIMIT 1",
+ dbesc($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],get_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;
+ }
+
+ $limit = service_class_fetch($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 ' . $limit);
+ attach_delete($c[0]['channel_id'], $this->data['hash']);
+ return;
+ }
+ }
+ }
+
+ /**
+ * @brief Returns the raw data.
+ *
+ * @return string
+ */
+ public function get() {
+ logger('get file ' . basename($this->name), LOGGER_DEBUG);
+ logger('os_path: ' . $this->os_path, LOGGER_DATA);
+
+ $r = q("SELECT data, flags, os_storage, filename, filetype FROM attach WHERE hash = '%s' AND uid = %d LIMIT 1",
+ dbesc($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)) {
+ header('Content-disposition: attachment; filename="' . $r[0]['filename'] . '"');
+ header('Content-type: text/plain');
+ }
+
+ if (intval($r[0]['os_storage'])) {
+ $x = dbunescbin($r[0]['data']);
+ 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]['data']);
+ }
+ }
+
+ /**
+ * @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)) {
+ 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.');
+ }
+ }
+
+ attach_delete($this->auth->owner_id, $this->data['hash']);
+ }
+}
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