371 lines
8.5 KiB
PHP
371 lines
8.5 KiB
PHP
<?php
|
|
/**
|
|
* Copyright (c) 2012 Robin Appelman <icewind@owncloud.com>
|
|
* This file is licensed under the Affero General Public License version 3 or
|
|
* later.
|
|
* See the COPYING-README file.
|
|
*/
|
|
|
|
namespace OC\Files\Storage;
|
|
|
|
/**
|
|
* Storage backend class for providing common filesystem operation methods
|
|
* which are not storage-backend specific.
|
|
*
|
|
* \OC\Files\Storage\Common is never used directly; it is extended by all other
|
|
* storage backends, where its methods may be overridden, and additional
|
|
* (backend-specific) methods are defined.
|
|
*
|
|
* Some \OC\Files\Storage\Common methods call functions which are first defined
|
|
* in classes which extend it, e.g. $this->stat() .
|
|
*/
|
|
|
|
abstract class Common implements \OC\Files\Storage\Storage {
|
|
private $cache;
|
|
private $scanner;
|
|
private $permissioncache;
|
|
private $watcher;
|
|
private $storageCache;
|
|
|
|
public function __construct($parameters) {
|
|
}
|
|
|
|
public function is_dir($path) {
|
|
return $this->filetype($path) == 'dir';
|
|
}
|
|
|
|
public function is_file($path) {
|
|
return $this->filetype($path) == 'file';
|
|
}
|
|
|
|
public function filesize($path) {
|
|
if ($this->is_dir($path)) {
|
|
return 0; //by definition
|
|
} else {
|
|
$stat = $this->stat($path);
|
|
if (isset($stat['size'])) {
|
|
return $stat['size'];
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
public function isCreatable($path) {
|
|
if ($this->is_dir($path) && $this->isUpdatable($path)) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public function isDeletable($path) {
|
|
return $this->isUpdatable($path);
|
|
}
|
|
|
|
public function isSharable($path) {
|
|
return $this->isReadable($path);
|
|
}
|
|
|
|
public function getPermissions($path) {
|
|
$permissions = 0;
|
|
if ($this->isCreatable($path)) {
|
|
$permissions |= \OCP\PERMISSION_CREATE;
|
|
}
|
|
if ($this->isReadable($path)) {
|
|
$permissions |= \OCP\PERMISSION_READ;
|
|
}
|
|
if ($this->isUpdatable($path)) {
|
|
$permissions |= \OCP\PERMISSION_UPDATE;
|
|
}
|
|
if ($this->isDeletable($path)) {
|
|
$permissions |= \OCP\PERMISSION_DELETE;
|
|
}
|
|
if ($this->isSharable($path)) {
|
|
$permissions |= \OCP\PERMISSION_SHARE;
|
|
}
|
|
return $permissions;
|
|
}
|
|
|
|
public function filemtime($path) {
|
|
$stat = $this->stat($path);
|
|
if (isset($stat['mtime'])) {
|
|
return $stat['mtime'];
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
public function file_get_contents($path) {
|
|
$handle = $this->fopen($path, "r");
|
|
if (!$handle) {
|
|
return false;
|
|
}
|
|
$size = $this->filesize($path);
|
|
if ($size == 0) {
|
|
return '';
|
|
}
|
|
return fread($handle, $size);
|
|
}
|
|
|
|
public function file_put_contents($path, $data) {
|
|
$handle = $this->fopen($path, "w");
|
|
return fwrite($handle, $data);
|
|
}
|
|
|
|
public function rename($path1, $path2) {
|
|
if ($this->copy($path1, $path2)) {
|
|
return $this->unlink($path1);
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
public function copy($path1, $path2) {
|
|
$source = $this->fopen($path1, 'r');
|
|
$target = $this->fopen($path2, 'w');
|
|
list($count, $result) = \OC_Helper::streamCopy($source, $target);
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* @brief Deletes all files and folders recursively within a directory
|
|
* @param string $directory The directory whose contents will be deleted
|
|
* @param bool $empty Flag indicating whether directory will be emptied
|
|
* @returns bool
|
|
*
|
|
* @note By default the directory specified by $directory will be
|
|
* deleted together with its contents. To avoid this set $empty to true
|
|
*/
|
|
public function deleteAll($directory, $empty = false) {
|
|
$directory = trim($directory, '/');
|
|
if (!$this->is_dir($directory) || !$this->isReadable($directory)) {
|
|
return false;
|
|
} else {
|
|
$directoryHandle = $this->opendir($directory);
|
|
while ($contents = readdir($directoryHandle)) {
|
|
if (!\OC\Files\Filesystem::isIgnoredDir($contents)) {
|
|
$path = $directory . '/' . $contents;
|
|
if ($this->is_dir($path)) {
|
|
$this->deleteAll($path);
|
|
} else {
|
|
$this->unlink($path);
|
|
}
|
|
}
|
|
}
|
|
if ($empty === false) {
|
|
if (!$this->rmdir($directory)) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
}
|
|
|
|
public function getMimeType($path) {
|
|
if (!$this->file_exists($path)) {
|
|
return false;
|
|
}
|
|
if ($this->is_dir($path)) {
|
|
return 'httpd/unix-directory';
|
|
}
|
|
$source = $this->fopen($path, 'r');
|
|
if (!$source) {
|
|
return false;
|
|
}
|
|
$head = fread($source, 8192); //8kb should suffice to determine a mimetype
|
|
if ($pos = strrpos($path, '.')) {
|
|
$extension = substr($path, $pos);
|
|
} else {
|
|
$extension = '';
|
|
}
|
|
$tmpFile = \OC_Helper::tmpFile($extension);
|
|
file_put_contents($tmpFile, $head);
|
|
$mime = \OC_Helper::getMimeType($tmpFile);
|
|
unlink($tmpFile);
|
|
return $mime;
|
|
}
|
|
|
|
public function hash($type, $path, $raw = false) {
|
|
$tmpFile = $this->getLocalFile($path);
|
|
$hash = hash($type, $tmpFile, $raw);
|
|
unlink($tmpFile);
|
|
return $hash;
|
|
}
|
|
|
|
public function search($query) {
|
|
return $this->searchInDir($query);
|
|
}
|
|
|
|
public function getLocalFile($path) {
|
|
return $this->toTmpFile($path);
|
|
}
|
|
|
|
private function toTmpFile($path) { //no longer in the storage api, still useful here
|
|
$source = $this->fopen($path, 'r');
|
|
if (!$source) {
|
|
return false;
|
|
}
|
|
if ($pos = strrpos($path, '.')) {
|
|
$extension = substr($path, $pos);
|
|
} else {
|
|
$extension = '';
|
|
}
|
|
$tmpFile = \OC_Helper::tmpFile($extension);
|
|
$target = fopen($tmpFile, 'w');
|
|
\OC_Helper::streamCopy($source, $target);
|
|
return $tmpFile;
|
|
}
|
|
|
|
public function getLocalFolder($path) {
|
|
$baseDir = \OC_Helper::tmpFolder();
|
|
$this->addLocalFolder($path, $baseDir);
|
|
return $baseDir;
|
|
}
|
|
|
|
private function addLocalFolder($path, $target) {
|
|
if ($dh = $this->opendir($path)) {
|
|
while ($file = readdir($dh)) {
|
|
if ($file !== '.' and $file !== '..') {
|
|
if ($this->is_dir($path . '/' . $file)) {
|
|
mkdir($target . '/' . $file);
|
|
$this->addLocalFolder($path . '/' . $file, $target . '/' . $file);
|
|
} else {
|
|
$tmp = $this->toTmpFile($path . '/' . $file);
|
|
rename($tmp, $target . '/' . $file);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
protected function searchInDir($query, $dir = '') {
|
|
$files = array();
|
|
$dh = $this->opendir($dir);
|
|
if ($dh) {
|
|
while ($item = readdir($dh)) {
|
|
if ($item == '.' || $item == '..') continue;
|
|
if (strstr(strtolower($item), strtolower($query)) !== false) {
|
|
$files[] = $dir . '/' . $item;
|
|
}
|
|
if ($this->is_dir($dir . '/' . $item)) {
|
|
$files = array_merge($files, $this->searchInDir($query, $dir . '/' . $item));
|
|
}
|
|
}
|
|
}
|
|
return $files;
|
|
}
|
|
|
|
/**
|
|
* check if a file or folder has been updated since $time
|
|
*
|
|
* @param string $path
|
|
* @param int $time
|
|
* @return bool
|
|
*/
|
|
public function hasUpdated($path, $time) {
|
|
return $this->filemtime($path) > $time;
|
|
}
|
|
|
|
public function getCache($path = '') {
|
|
if (!isset($this->cache)) {
|
|
$this->cache = new \OC\Files\Cache\Cache($this);
|
|
}
|
|
return $this->cache;
|
|
}
|
|
|
|
public function getScanner($path = '') {
|
|
if (!isset($this->scanner)) {
|
|
$this->scanner = new \OC\Files\Cache\Scanner($this);
|
|
}
|
|
return $this->scanner;
|
|
}
|
|
|
|
public function getPermissionsCache($path = '') {
|
|
if (!isset($this->permissioncache)) {
|
|
$this->permissioncache = new \OC\Files\Cache\Permissions($this);
|
|
}
|
|
return $this->permissioncache;
|
|
}
|
|
|
|
public function getWatcher($path = '') {
|
|
if (!isset($this->watcher)) {
|
|
$this->watcher = new \OC\Files\Cache\Watcher($this);
|
|
}
|
|
return $this->watcher;
|
|
}
|
|
|
|
public function getStorageCache(){
|
|
if (!isset($this->storageCache)) {
|
|
$this->storageCache = new \OC\Files\Cache\Storage($this);
|
|
}
|
|
return $this->storageCache;
|
|
}
|
|
|
|
/**
|
|
* get the owner of a path
|
|
*
|
|
* @param string $path The path to get the owner
|
|
* @return string uid or false
|
|
*/
|
|
public function getOwner($path) {
|
|
return \OC_User::getUser();
|
|
}
|
|
|
|
/**
|
|
* get the ETag for a file or folder
|
|
*
|
|
* @param string $path
|
|
* @return string
|
|
*/
|
|
public function getETag($path) {
|
|
$ETagFunction = \OC_Connector_Sabre_Node::$ETagFunction;
|
|
if ($ETagFunction) {
|
|
$hash = call_user_func($ETagFunction, $path);
|
|
return $hash;
|
|
} else {
|
|
return uniqid();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* clean a path, i.e. remove all redundant '.' and '..'
|
|
* making sure that it can't point to higher than '/'
|
|
*
|
|
* @param $path The path to clean
|
|
* @return string cleaned path
|
|
*/
|
|
public function cleanPath($path) {
|
|
if (strlen($path) == 0 or $path[0] != '/') {
|
|
$path = '/' . $path;
|
|
}
|
|
|
|
$output = array();
|
|
foreach (explode('/', $path) as $chunk) {
|
|
if ($chunk == '..') {
|
|
array_pop($output);
|
|
} else if ($chunk == '.') {
|
|
} else {
|
|
$output[] = $chunk;
|
|
}
|
|
}
|
|
return implode('/', $output);
|
|
}
|
|
|
|
public function test() {
|
|
if ($this->stat('')) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* get the free space in the storage
|
|
*
|
|
* @param $path
|
|
* @return int
|
|
*/
|
|
public function free_space($path) {
|
|
return \OC\Files\FREE_SPACE_UNKNOWN;
|
|
}
|
|
}
|