mirror of
https://github.com/EGroupware/egroupware.git
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2596 lines
81 KiB
PHP
2596 lines
81 KiB
PHP
<?php
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/**
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* eGroupWare API: VFS - static methods to use the new eGW virtual file system
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*
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* @link http://www.egroupware.org
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* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
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* @package api
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* @subpackage vfs
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* @author Ralf Becker <RalfBecker-AT-outdoor-training.de>
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* @copyright (c) 2008-16 by Ralf Becker <RalfBecker-AT-outdoor-training.de>
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* @version $Id$
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*/
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namespace EGroupware\Api;
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// explicitly import old phpgwapi classes used:
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use HTTP_WebDAV_Server;
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/**
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* Class containing static methods to use the new eGW virtual file system
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*
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* This extension of the vfs stream-wrapper allows to use the following static functions,
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* which only allow access to the eGW VFS and need no 'vfs://default' prefix for filenames:
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*
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* All examples require a: use EGroupware\Api\Vfs;
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*
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* - resource Vfs::fopen($path,$mode) like fopen, returned resource can be used with fwrite etc.
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* - resource Vfs::opendir($path) like opendir, returned resource can be used with readdir etc.
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* - boolean Vfs::copy($from,$to) like copy
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* - boolean Vfs::rename($old,$new) renaming or moving a file in the vfs
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* - boolean Vfs::mkdir($path) creating a new dir in the vfs
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* - boolean Vfs::rmdir($path) removing (an empty) directory
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* - boolean Vfs::unlink($path) removing a file
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* - boolean Vfs::touch($path,$mtime=null) touch a file
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* - boolean Vfs::stat($path) returning status of file like stat(), but only with string keys (no numerical indexes)!
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*
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* With the exception of Vfs::touch() (not yet part of the stream_wrapper interface)
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* you can always use the standard php functions, if you add a 'vfs://default' prefix
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* to every filename or path. Be sure to always add the prefix, as the user otherwise gains
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* access to the real filesystem of the server!
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*
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* The two following methods can be used to persitently mount further filesystems (without editing the code):
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*
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* - boolean|array Vfs::mount($url,$path) to mount $ur on $path or to return the fstab when called without argument
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* - boolean Vfs::umount($path) to unmount a path or url
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*
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* The stream wrapper interface allows to access hugh files in junks to not be limited by the
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* memory_limit setting of php. To do you should pass the opened file as resource and not the content:
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*
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* $file = Vfs::fopen('/home/user/somefile','r');
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* $content = fread($file,1024);
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*
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* You can also attach stream filters, to eg. base64 encode or compress it on the fly,
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* without the need to hold the content of the whole file in memmory.
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*
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* If you want to copy a file, you can use stream_copy_to_stream to do a copy of a file far bigger then
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* php's memory_limit:
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*
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* $from = Vfs::fopen('/home/user/fromfile','r');
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* $to = Vfs::fopen('/home/user/tofile','w');
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*
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* stream_copy_to_stream($from,$to);
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*
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* The static Vfs::copy() method does exactly that, but you have to do it eg. on your own, if
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* you want to copy eg. an uploaded file into the vfs.
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*
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* Vfs::parse_url($url, $component=-1), Vfs::dirname($url) and Vfs::basename($url) work
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* on urls containing utf-8 characters, which get NOT urlencoded in our VFS!
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*/
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class Vfs
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{
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const PREFIX = 'vfs://default';
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/**
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* Scheme / protocol used for this stream-wrapper
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*/
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const SCHEME = Vfs\StreamWrapper::SCHEME;
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/**
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* Mime type of directories, the old vfs used 'Directory', while eg. WebDAV uses 'httpd/unix-directory'
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*/
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const DIR_MIME_TYPE = Vfs\StreamWrapper::DIR_MIME_TYPE;
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/**
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* Readable bit, for dirs traversable
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*/
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const READABLE = 4;
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/**
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* Writable bit, for dirs delete or create files in that dir
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*/
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const WRITABLE = 2;
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/**
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* Excecutable bit, here only use to check if user is allowed to search dirs
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*/
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const EXECUTABLE = 1;
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/**
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* mode-bits, which have to be set for links
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*/
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const MODE_LINK = Vfs\StreamWrapper::MODE_LINK;
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/**
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* Name of the lock table
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*/
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const LOCK_TABLE = 'egw_locks';
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/**
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* How much should be logged to the apache error-log
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*
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* 0 = Nothing
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* 1 = only errors
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* 2 = all function calls and errors (contains passwords too!)
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*/
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const LOG_LEVEL = 1;
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/**
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* Current user has root rights, no access checks performed!
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*
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* @var boolean
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*/
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static $is_root = false;
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/**
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* Current user id, in case we ever change if away from $GLOBALS['egw_info']['user']['account_id']
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*
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* @var int
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*/
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static $user;
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/**
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* Current user is an eGW admin
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*
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* @var boolean
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*/
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static $is_admin = false;
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/**
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* Total of last find call
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*
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* @var int
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*/
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static $find_total;
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/**
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* Reference to the global db object
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*
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* @var Db
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*/
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static $db;
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/**
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* fopen working on just the eGW VFS
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*
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* @param string $path filename with absolute path in the eGW VFS
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* @param string $mode 'r', 'w', ... like fopen
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* @param resource $context =null context to pass to stream-wrapper
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* @return resource
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*/
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static function fopen($path, $mode, $context=null)
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{
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if ($path[0] != '/')
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{
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throw new Exception\AssertionFailed("Filename '$path' is not an absolute path!");
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}
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return $context ? fopen(self::PREFIX.$path, $mode, false, $context) : fopen(self::PREFIX.$path, $mode);
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}
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/**
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* opendir working on just the eGW VFS: returns resource for readdir() etc.
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*
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* @param string $path filename with absolute path in the eGW VFS
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* @param resource $context =null context to pass to stream-wrapper
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* @return resource
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*/
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static function opendir($path, $context=null)
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{
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if ($path[0] != '/')
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{
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throw new Exception\AssertionFailed("Directory '$path' is not an absolute path!");
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}
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return $context ? opendir(self::PREFIX.$path, $context) : opendir(self::PREFIX.$path);
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}
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/**
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* dir working on just the eGW VFS: returns directory object
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*
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* @param string $path filename with absolute path in the eGW VFS
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* @return Directory
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*/
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static function dir($path)
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{
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if ($path[0] != '/')
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{
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throw new Exception\AssertionFailed("Directory '$path' is not an absolute path!");
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}
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return dir(self::PREFIX.$path);
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}
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/**
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* scandir working on just the eGW VFS: returns array with filenames as values
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*
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* @param string $path filename with absolute path in the eGW VFS
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* @param int $sorting_order =0 !$sorting_order (default) alphabetical in ascending order, $sorting_order alphabetical in descending order.
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* @return array
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*/
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static function scandir($path,$sorting_order=0)
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{
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if ($path[0] != '/')
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{
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throw new Exception\AssertionFailed("Directory '$path' is not an absolute path!");
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}
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return scandir(self::PREFIX.$path,$sorting_order);
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}
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/**
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* copy working on just the eGW VFS
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*
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* @param string $from
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* @param string $to
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* @return boolean
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*/
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static function copy($from,$to)
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{
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$old_props = self::file_exists($to) ? self::propfind($to,null) : array();
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// copy properties (eg. file comment), if there are any and evtl. existing old properties
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$props = self::propfind($from,null);
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if(!$props)
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{
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$props = array();
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}
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foreach($old_props as $prop)
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{
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if (!self::find_prop($props,$prop))
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{
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$prop['val'] = null; // null = delete prop
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$props[] = $prop;
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}
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}
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// using self::copy_uploaded() to treat copying incl. properties as atomar operation in respect of notifications
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return self::copy_uploaded(self::PREFIX.$from,$to,$props,false); // false = no is_uploaded_file check!
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}
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/**
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* Find a specific property in an array of properties (eg. returned by propfind)
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*
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* @param array &$props
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* @param array|string $name property array or name
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* @param string $ns =self::DEFAULT_PROP_NAMESPACE namespace, only if $prop is no array
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* @return &array reference to property in $props or null if not found
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*/
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static function &find_prop(array &$props,$name,$ns=self::DEFAULT_PROP_NAMESPACE)
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{
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if (is_array($name))
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{
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$ns = $name['ns'];
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$name = $name['name'];
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}
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foreach($props as &$prop)
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{
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if ($prop['name'] == $name && $prop['ns'] == $ns) return $prop;
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}
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return null;
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}
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/**
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* stat working on just the eGW VFS (alias of url_stat)
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*
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* @param string $path filename with absolute path in the eGW VFS
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* @param boolean $try_create_home =false should a non-existing home-directory be automatically created
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* @return array
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*/
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static function stat($path,$try_create_home=false)
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{
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if ($path[0] != '/' && strpos($path, self::PREFIX.'/') !== 0)
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{
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throw new Exception\AssertionFailed("File '$path' is not an absolute path!");
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}
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$vfs = new Vfs\StreamWrapper();
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if (($stat = $vfs->url_stat($path,0,$try_create_home)))
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{
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$stat = array_slice($stat,13); // remove numerical indices 0-12
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}
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return $stat;
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}
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/**
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* lstat (not resolving symbolic links) working on just the eGW VFS (alias of url_stat)
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*
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* @param string $path filename with absolute path in the eGW VFS
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* @param boolean $try_create_home =false should a non-existing home-directory be automatically created
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* @return array
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*/
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static function lstat($path,$try_create_home=false)
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{
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if ($path[0] != '/' && strpos($path, self::PREFIX.'/') !== 0)
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{
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throw new Exception\AssertionFailed("File '$path' is not an absolute path!");
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}
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$vfs = new Vfs\StreamWrapper();
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if (($stat = $vfs->url_stat($path,STREAM_URL_STAT_LINK,$try_create_home)))
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{
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$stat = array_slice($stat,13); // remove numerical indices 0-12
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}
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return $stat;
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}
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/**
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* is_dir() version working only inside the vfs
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*
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* @param string $path
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* @return boolean
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*/
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static function is_dir($path)
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{
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return $path[0] == '/' && is_dir(self::PREFIX.$path);
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}
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/**
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* is_link() version working only inside the vfs
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*
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* @param string $path
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* @return boolean
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*/
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static function is_link($path)
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{
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return $path[0] == '/' && is_link(self::PREFIX.$path);
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}
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/**
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* file_exists() version working only inside the vfs
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*
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* @param string $path
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* @return boolean
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*/
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static function file_exists($path)
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{
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return $path[0] == '/' && file_exists(self::PREFIX.$path);
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}
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/**
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* Mounts $url under $path in the vfs, called without parameter it returns the fstab
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*
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* The fstab is stored in the eGW configuration and used for all eGW users.
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*
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* @param string $url =null url of the filesystem to mount, eg. oldvfs://default/
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* @param string $path =null path to mount the filesystem in the vfs, eg. /
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* @param boolean $check_url =null check if url is an existing directory, before mounting it
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* default null only checks if url does not contain a $ as used in $user or $pass
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* @param boolean $persitent_mount =true create a persitent mount, or only a temprary for current request
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* @param boolean $clear_fstab =false true clear current fstab, false (default) only add given mount
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* @return array|boolean array with fstab, if called without parameter or true on successful mount
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*/
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static function mount($url=null,$path=null,$check_url=null,$persitent_mount=true,$clear_fstab=false)
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{
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return Vfs\StreamWrapper::mount($url, $path, $check_url, $persitent_mount, $clear_fstab);
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}
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/**
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* Unmounts a filesystem part of the vfs
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*
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* @param string $path url or path of the filesystem to unmount
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*/
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static function umount($path)
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{
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return Vfs\StreamWrapper::umount($path);
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}
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/**
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* Returns mount url of a full url returned by resolve_url
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*
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* @param string $fullurl full url returned by resolve_url
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* @return string|NULL mount url or null if not found
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*/
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static function mount_url($fullurl)
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{
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return Vfs\StreamWrapper::mount_url($fullurl);
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}
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/**
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* Check if file is hidden: name starts with a '.' or is Thumbs.db
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*
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* @param string $path
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* @param boolean $allow_versions =false allow .versions or .attic
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* @return boolean
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*/
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public static function is_hidden($path, $allow_versions=false)
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{
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$file = self::basename($path);
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return $file[0] == '.' && (!$allow_versions || !in_array($file, array('.versions', '.attic'))) || $file == 'Thumbs.db';
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}
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/**
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* find = recursive search over the filesystem
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*
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* @param string|array $base base of the search
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* @param array $options =null the following keys are allowed:
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* - type => {d|f|F} d=dirs, f=files (incl. symlinks), F=files (incl. symlinks to files), default all
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* - depth => {true|false(default)} put the contents of a dir before the dir itself
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* - dirsontop => {true(default)|false} allways return dirs before the files (two distinct blocks)
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* - mindepth,maxdepth minimal or maximal depth to be returned
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* - name,path => pattern with *,? wildcards, eg. "*.php"
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* - name_preg,path_preg => preg regular expresion, eg. "/(vfs|wrapper)/"
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* - uid,user,gid,group,nouser,nogroup file belongs to user/group with given name or (numerical) id
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* - mime => type[/subtype] or perl regular expression starting with a "/" eg. "/^(image|video)\\//i"
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* - empty,size => (+|-|)N
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* - cmin/mmin => (+|-|)N file/dir create/modified in the last N minutes
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* - ctime/mtime => (+|-|)N file/dir created/modified in the last N days
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* - url => false(default),true allow (and return) full URL's instead of VFS pathes (only set it, if you know what you doing securitywise!)
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* - need_mime => false(default),true should we return the mime type
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* - order => name order rows by name column
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* - sort => (ASC|DESC) sort, default ASC
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* - limit => N,[n=0] return N entries from position n on, which defaults to 0
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* - follow => {true|false(default)} follow symlinks
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* - hidden => {true|false(default)} include hidden files (name starts with a '.' or is Thumbs.db)
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* - show-deleted => {true|false(default)} get also set by hidden, if not explicitly set otherwise (requires versioning!)
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* @param string|array/true $exec =null function to call with each found file/dir as first param and stat array as last param or
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* true to return file => stat pairs
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* @param array $exec_params =null further params for exec as array, path is always the first param and stat the last!
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* @return array of pathes if no $exec, otherwise path => stat pairs
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*/
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static function find($base,$options=null,$exec=null,$exec_params=null)
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{
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//error_log(__METHOD__."(".print_r($base,true).",".print_r($options,true).",".print_r($exec,true).",".print_r($exec_params,true).")\n");
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$type = $options['type']; // 'd', 'f' or 'F'
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$dirs_last = $options['depth']; // put content of dirs before the dir itself
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// show dirs on top by default, if no recursive listing (allways disabled if $type specified, as unnecessary)
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$dirsontop = !$type && (isset($options['dirsontop']) ? (boolean)$options['dirsontop'] : isset($options['maxdepth'])&&$options['maxdepth']>0);
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if ($dirsontop) $options['need_mime'] = true; // otherwise dirsontop can NOT work
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// process some of the options (need to be done only once)
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if (isset($options['name']) && !isset($options['name_preg'])) // change from simple *,? wildcards to preg regular expression once
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{
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$options['name_preg'] = '/^'.str_replace(array('\\?','\\*'),array('.{1}','.*'),preg_quote($options['name'])).'$/i';
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}
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if (isset($options['path']) && !isset($options['preg_path'])) // change from simple *,? wildcards to preg regular expression once
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{
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$options['path_preg'] = '/^'.str_replace(array('\\?','\\*'),array('.{1}','.*'),preg_quote($options['path'])).'$/i';
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}
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if (!isset($options['uid']))
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{
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if (isset($options['user']))
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{
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$options['uid'] = $GLOBALS['egw']->accounts->name2id($options['user'],'account_lid','u');
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}
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elseif (isset($options['nouser']))
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{
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$options['uid'] = 0;
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}
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}
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if (!isset($options['gid']))
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{
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if (isset($options['group']))
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{
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$options['gid'] = abs($GLOBALS['egw']->accounts->name2id($options['group'],'account_lid','g'));
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}
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elseif (isset($options['nogroup']))
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{
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$options['gid'] = 0;
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}
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}
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if ($options['order'] == 'mime')
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{
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$options['need_mime'] = true; // we need to return the mime colum
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}
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// implicit show deleted files, if hidden is enabled (requires versioning!)
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if (!empty($options['hidden']) && !isset($options['show-deleted']))
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{
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$options['show-deleted'] = true;
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}
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// make all find options available as stream context option "find", to allow plugins to use them
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$context = stream_context_create(array(self::SCHEME => array('find' => $options)));
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$url = $options['url'];
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if (!is_array($base))
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{
|
|
$base = array($base);
|
|
}
|
|
$result = array();
|
|
foreach($base as $path)
|
|
{
|
|
if (!$url)
|
|
{
|
|
if ($path[0] != '/' || !self::stat($path)) continue;
|
|
$path = self::PREFIX . $path;
|
|
}
|
|
if (!isset($options['remove']))
|
|
{
|
|
$options['remove'] = count($base) == 1 ? count(explode('/',$path))-3+(int)(substr($path,-1)!='/') : 0;
|
|
}
|
|
$is_dir = is_dir($path);
|
|
if ((int)$options['mindepth'] == 0 && (!$dirs_last || !$is_dir))
|
|
{
|
|
self::_check_add($options,$path,$result);
|
|
}
|
|
if ($is_dir && (!isset($options['maxdepth']) || ($options['maxdepth'] > 0 &&
|
|
$options['depth'] < $options['maxdepth'])) &&
|
|
($dir = @opendir($path, $context)))
|
|
{
|
|
while(($fname = readdir($dir)) !== false)
|
|
{
|
|
if ($fname == '.' || $fname == '..') continue; // ignore current and parent dir!
|
|
|
|
if (self::is_hidden($fname, $options['show-deleted']) && !$options['hidden']) continue; // ignore hidden files
|
|
|
|
$file = self::concat($path, $fname);
|
|
|
|
if ((int)$options['mindepth'] <= 1)
|
|
{
|
|
self::_check_add($options,$file,$result);
|
|
}
|
|
// only descend into subdirs, if it's a real dir (no link to a dir) or we should follow symlinks
|
|
if (is_dir($file) && ($options['follow'] || !is_link($file)) && (!isset($options['maxdepth']) || $options['maxdepth'] > 1))
|
|
{
|
|
$opts = $options;
|
|
if ($opts['mindepth']) $opts['mindepth']--;
|
|
if ($opts['maxdepth']) $opts['depth']++;
|
|
unset($opts['order']);
|
|
unset($opts['limit']);
|
|
foreach(self::find($options['url']?$file:self::parse_url($file,PHP_URL_PATH),$opts,true) as $p => $s)
|
|
{
|
|
unset($result[$p]);
|
|
$result[$p] = $s;
|
|
}
|
|
}
|
|
}
|
|
closedir($dir);
|
|
}
|
|
if ($is_dir && (int)$options['mindepth'] == 0 && $dirs_last)
|
|
{
|
|
self::_check_add($options,$path,$result);
|
|
}
|
|
}
|
|
// ordering of the rows
|
|
if (isset($options['order']))
|
|
{
|
|
$sort_desc = strtolower($options['sort']) == 'desc';
|
|
switch($order = $options['order'])
|
|
{
|
|
// sort numerical
|
|
case 'size':
|
|
case 'uid':
|
|
case 'gid':
|
|
case 'mode':
|
|
case 'ctime':
|
|
case 'mtime':
|
|
$ok = uasort($result, function($a, $b) use ($dirsontop, $sort_desc, $order)
|
|
{
|
|
$cmp = $a[$order] - $b[$order];
|
|
// sort code, to place directories before files, if $dirsontop enabled
|
|
if ($dirsontop && ($a['mime'] == self::DIR_MIME_TYPE) !== ($b['mime'] == self::DIR_MIME_TYPE))
|
|
{
|
|
$cmp = $a['mime' ] == self::DIR_MIME_TYPE ? -1 : 1;
|
|
}
|
|
// reverse sort for descending, if no directory sorted to top
|
|
elseif ($sort_desc)
|
|
{
|
|
$cmp *= -1;
|
|
}
|
|
// always use name as second sort criteria
|
|
if (!$cmp) $cmp = strcasecmp($a['name'], $b['name']);
|
|
return $cmp;
|
|
});
|
|
break;
|
|
|
|
// sort alphanumerical
|
|
default:
|
|
$order = 'name';
|
|
// fall throught
|
|
case 'name':
|
|
case 'mime':
|
|
$ok = uasort($result, function($a, $b) use ($dirsontop, $order, $sort_desc)
|
|
{
|
|
$cmp = strcasecmp($a[$order], $b[$order]);
|
|
// sort code, to place directories before files, if $dirsontop enabled
|
|
if ($dirsontop && ($a['mime'] == self::DIR_MIME_TYPE) !== ($b['mime'] == self::DIR_MIME_TYPE))
|
|
{
|
|
$cmp = $a['mime' ] == self::DIR_MIME_TYPE ? -1 : 1;
|
|
}
|
|
// reverse sort for descending
|
|
elseif ($sort_desc)
|
|
{
|
|
$cmp *= -1;
|
|
}
|
|
// always use name as second sort criteria
|
|
if (!$cmp && $order != 'name') $cmp = strcasecmp($a['name'], $b['name']);
|
|
return $cmp;
|
|
});
|
|
break;
|
|
}
|
|
}
|
|
// limit resultset
|
|
self::$find_total = count($result);
|
|
if (isset($options['limit']))
|
|
{
|
|
list($limit,$start) = explode(',',$options['limit']);
|
|
if (!$limit && !($limit = $GLOBALS['egw_info']['user']['preferences']['comman']['maxmatches'])) $limit = 15;
|
|
//echo "total=".self::$find_total.", limit=$options[limit] --> start=$start, limit=$limit<br>\n";
|
|
|
|
if ((int)$start || self::$find_total > $limit)
|
|
{
|
|
$result = array_slice($result,(int)$start,(int)$limit,true);
|
|
}
|
|
}
|
|
//echo $path; _debug_array($result);
|
|
if ($exec !== true && is_callable($exec))
|
|
{
|
|
if (!is_array($exec_params))
|
|
{
|
|
$exec_params = is_null($exec_params) ? array() : array($exec_params);
|
|
}
|
|
foreach($result as $path => &$stat)
|
|
{
|
|
$options = $exec_params;
|
|
array_unshift($options,$path);
|
|
array_push($options,$stat);
|
|
//echo "calling ".print_r($exec,true).print_r($options,true)."\n";
|
|
$stat = call_user_func_array($exec,$options);
|
|
}
|
|
return $result;
|
|
}
|
|
//error_log("self::find($path)=".print_r(array_keys($result),true));
|
|
if ($exec !== true)
|
|
{
|
|
return array_keys($result);
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Function carying out the various (optional) checks, before files&dirs get returned as result of find
|
|
*
|
|
* @param array $options options, see self::find(,$options)
|
|
* @param string $path name of path to add
|
|
* @param array &$result here we add the stat for the key $path, if the checks are successful
|
|
*/
|
|
private static function _check_add($options,$path,&$result)
|
|
{
|
|
$type = $options['type']; // 'd' or 'f'
|
|
|
|
if ($options['url'])
|
|
{
|
|
if (($stat = @lstat($path)))
|
|
{
|
|
$stat = array_slice($stat,13); // remove numerical indices 0-12
|
|
}
|
|
}
|
|
else
|
|
{
|
|
$stat = self::lstat($path);
|
|
}
|
|
if (!$stat)
|
|
{
|
|
return; // not found, should not happen
|
|
}
|
|
if ($type && (($type == 'd') == !($stat['mode'] & Vfs\Sqlfs\StreamWrapper::MODE_DIR) || // != is_dir() which can be true for symlinks
|
|
$type == 'F' && is_dir($path))) // symlink to a directory
|
|
{
|
|
return; // wrong type
|
|
}
|
|
$stat['path'] = self::parse_url($path,PHP_URL_PATH);
|
|
$stat['name'] = $options['remove'] > 0 ? implode('/',array_slice(explode('/',$stat['path']),$options['remove'])) : self::basename($path);
|
|
|
|
if ($options['mime'] || $options['need_mime'])
|
|
{
|
|
$stat['mime'] = self::mime_content_type($path);
|
|
}
|
|
if (isset($options['name_preg']) && !preg_match($options['name_preg'],$stat['name']) ||
|
|
isset($options['path_preg']) && !preg_match($options['path_preg'],$path))
|
|
{
|
|
//echo "<p>!preg_match('{$options['name_preg']}','{$stat['name']}')</p>\n";
|
|
return; // wrong name or path
|
|
}
|
|
if (isset($options['gid']) && $stat['gid'] != $options['gid'] ||
|
|
isset($options['uid']) && $stat['uid'] != $options['uid'])
|
|
{
|
|
return; // wrong user or group
|
|
}
|
|
if (isset($options['mime']) && $options['mime'] != $stat['mime'])
|
|
{
|
|
if ($options['mime'][0] == '/') // perl regular expression given
|
|
{
|
|
if (!preg_match($options['mime'], $stat['mime']))
|
|
{
|
|
return; // wrong mime-type
|
|
}
|
|
}
|
|
else
|
|
{
|
|
list($type,$subtype) = explode('/',$options['mime']);
|
|
// no subtype (eg. 'image') --> check only the main type
|
|
if ($subtype || substr($stat['mime'],0,strlen($type)+1) != $type.'/')
|
|
{
|
|
return; // wrong mime-type
|
|
}
|
|
}
|
|
}
|
|
if (isset($options['size']) && !self::_check_num($stat['size'],$options['size']) ||
|
|
(isset($options['empty']) && !!$options['empty'] !== !$stat['size']))
|
|
{
|
|
return; // wrong size
|
|
}
|
|
if (isset($options['cmin']) && !self::_check_num(round((time()-$stat['ctime'])/60),$options['cmin']) ||
|
|
isset($options['mmin']) && !self::_check_num(round((time()-$stat['mtime'])/60),$options['mmin']) ||
|
|
isset($options['ctime']) && !self::_check_num(round((time()-$stat['ctime'])/86400),$options['ctime']) ||
|
|
isset($options['mtime']) && !self::_check_num(round((time()-$stat['mtime'])/86400),$options['mtime']))
|
|
{
|
|
return; // not create/modified in the spezified time
|
|
}
|
|
// do we return url or just vfs pathes
|
|
if (!$options['url'])
|
|
{
|
|
$path = self::parse_url($path,PHP_URL_PATH);
|
|
}
|
|
$result[$path] = $stat;
|
|
}
|
|
|
|
private static function _check_num($value,$argument)
|
|
{
|
|
if (is_int($argument) && $argument >= 0 || $argument[0] != '-' && $argument[0] != '+')
|
|
{
|
|
//echo "_check_num($value,$argument) check = == ".(int)($value == $argument)."\n";
|
|
return $value == $argument;
|
|
}
|
|
if ($argument < 0)
|
|
{
|
|
//echo "_check_num($value,$argument) check < == ".(int)($value < abs($argument))."\n";
|
|
return $value < abs($argument);
|
|
}
|
|
//echo "_check_num($value,$argument) check > == ".(int)($value > (int)substr($argument,1))."\n";
|
|
return $value > (int) substr($argument,1);
|
|
}
|
|
|
|
/**
|
|
* Check if given directory is protected (user not allowed to remove or rename)
|
|
*
|
|
* Following directorys are protected:
|
|
* - /
|
|
* - /apps incl. subdirectories
|
|
* - /home
|
|
* - /templates incl. subdirectories
|
|
*
|
|
* @param string $dir path or url
|
|
* @return boolean true for protected dirs, false otherwise
|
|
*/
|
|
static function isProtectedDir($dir)
|
|
{
|
|
if ($dir[0] != '/') $dir = self::parse_url($dir, PHP_URL_PATH);
|
|
|
|
return preg_match('#^/(apps(/[^/]+)?|home|templates(/[^/]+)?)?/*$#', $dir) > 0;
|
|
}
|
|
|
|
/**
|
|
* Recursiv remove all given url's, including it's content if they are files
|
|
*
|
|
* @param string|array $urls url or array of url's
|
|
* @param boolean $allow_urls =false allow to use url's, default no only pathes (to stay within the vfs)
|
|
* @throws Vfs\Exception\ProtectedDirectory if trying to delete a protected directory, see Vfs::isProtected()
|
|
* @return array
|
|
*/
|
|
static function remove($urls,$allow_urls=false)
|
|
{
|
|
//error_log(__METHOD__.'('.array2string($urls).')');
|
|
foreach((array)$urls as $url)
|
|
{
|
|
// some precaution to never allow to (recursivly) remove /, /apps or /home, see Vfs::isProtected()
|
|
if (self::isProtectedDir($url))
|
|
{
|
|
throw new Vfs\Exception\ProtectedDirectory("Deleting protected directory '$url' rejected!");
|
|
}
|
|
}
|
|
return self::find($urls, array('depth'=>true,'url'=>$allow_urls,'hidden'=>true), __CLASS__.'::_rm_rmdir');
|
|
}
|
|
|
|
/**
|
|
* Helper function for remove: either rmdir or unlink given url (depending if it's a dir or file)
|
|
*
|
|
* @param string $url
|
|
* @return boolean
|
|
*/
|
|
static function _rm_rmdir($url)
|
|
{
|
|
if ($url[0] == '/')
|
|
{
|
|
$url = self::PREFIX . $url;
|
|
}
|
|
$vfs = new Vfs\StreamWrapper();
|
|
if (is_dir($url) && !is_link($url))
|
|
{
|
|
return $vfs->rmdir($url,0);
|
|
}
|
|
return $vfs->unlink($url);
|
|
}
|
|
|
|
/**
|
|
* The stream_wrapper interface checks is_{readable|writable|executable} against the webservers uid,
|
|
* which is wrong in case of our vfs, as we use the current users id and memberships
|
|
*
|
|
* @param string $path
|
|
* @param int $check mode to check: one or more or'ed together of: 4 = self::READABLE,
|
|
* 2 = self::WRITABLE, 1 = self::EXECUTABLE
|
|
* @return boolean
|
|
*/
|
|
static function is_readable($path,$check = self::READABLE)
|
|
{
|
|
return self::check_access($path,$check);
|
|
}
|
|
|
|
/**
|
|
* The stream_wrapper interface checks is_{readable|writable|executable} against the webservers uid,
|
|
* which is wrong in case of our vfs, as we use the current users id and memberships
|
|
*
|
|
* @param string $path path
|
|
* @param int $check mode to check: one or more or'ed together of: 4 = self::READABLE,
|
|
* 2 = self::WRITABLE, 1 = self::EXECUTABLE
|
|
* @param array|boolean $stat =null stat array or false, to not query it again
|
|
* @param int $user =null user used for check, if not current user (self::$user)
|
|
* @return boolean
|
|
*/
|
|
static function check_access($path, $check, $stat=null, $user=null)
|
|
{
|
|
static $vfs = null;
|
|
|
|
if (is_null($stat) && $user && $user != self::$user)
|
|
{
|
|
static $path_user_stat = array();
|
|
|
|
$backup_user = self::$user;
|
|
self::$user = $user;
|
|
|
|
if (!isset($path_user_stat[$path]) || !isset($path_user_stat[$path][$user]))
|
|
{
|
|
self::clearstatcache($path);
|
|
|
|
if (!isset($vfs)) $vfs = new Vfs\StreamWrapper();
|
|
$path_user_stat[$path][$user] = $vfs->url_stat($path, 0);
|
|
|
|
self::clearstatcache($path); // we need to clear the stat-cache after the call too, as the next call might be the regular user again!
|
|
}
|
|
if (($stat = $path_user_stat[$path][$user]))
|
|
{
|
|
// some backend mounts use $user:$pass in their url, for them we have to deny access!
|
|
if (strpos(self::resolve_url($path, false, false, false), '$user') !== false)
|
|
{
|
|
$ret = false;
|
|
}
|
|
else
|
|
{
|
|
$ret = self::check_access($path, $check, $stat);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
$ret = false; // no access, if we can not stat the file
|
|
}
|
|
self::$user = $backup_user;
|
|
|
|
// we need to clear stat-cache again, after restoring original user, as eg. eACL is stored in session
|
|
self::clearstatcache($path);
|
|
|
|
//error_log(__METHOD__."(path=$path||stat[name]={$stat['name']},stat[mode]=".sprintf('%o',$stat['mode']).",$check,$user) ".array2string($ret));
|
|
return $ret;
|
|
}
|
|
|
|
if (self::$is_root)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
// throw exception if stat array is used insead of path, can be removed soon
|
|
if (is_array($path))
|
|
{
|
|
throw new Exception\WrongParameter('path has to be string, use check_access($path,$check,$stat=null)!');
|
|
}
|
|
// query stat array, if not given
|
|
if (is_null($stat))
|
|
{
|
|
if (!isset($vfs)) $vfs = new Vfs\StreamWrapper();
|
|
$stat = $vfs->url_stat($path,0);
|
|
}
|
|
//error_log(__METHOD__."(path=$path||stat[name]={$stat['name']},stat[mode]=".sprintf('%o',$stat['mode']).",$check)");
|
|
|
|
if (!$stat)
|
|
{
|
|
//error_log(__METHOD__."(path=$path||stat[name]={$stat['name']},stat[mode]=".sprintf('%o',$stat['mode']).",$check) no stat array!");
|
|
return false; // file not found
|
|
}
|
|
// check if we use an EGroupwre stream wrapper, or a stock php one
|
|
// if it's not an EGroupware one, we can NOT use uid, gid and mode!
|
|
if (($scheme = self::parse_url($stat['url'],PHP_URL_SCHEME)) && !(class_exists(self::scheme2class($scheme))))
|
|
{
|
|
switch($check)
|
|
{
|
|
case self::READABLE:
|
|
return is_readable($stat['url']);
|
|
case self::WRITABLE:
|
|
return is_writable($stat['url']);
|
|
case self::EXECUTABLE:
|
|
return is_executable($stat['url']);
|
|
}
|
|
}
|
|
// check if other rights grant access
|
|
if (($stat['mode'] & $check) == $check)
|
|
{
|
|
//error_log(__METHOD__."(path=$path||stat[name]={$stat['name']},stat[mode]=".sprintf('%o',$stat['mode']).",$check) access via other rights!");
|
|
return true;
|
|
}
|
|
// check if there's owner access and we are the owner
|
|
if (($stat['mode'] & ($check << 6)) == ($check << 6) && $stat['uid'] && $stat['uid'] == self::$user)
|
|
{
|
|
//error_log(__METHOD__."(path=$path||stat[name]={$stat['name']},stat[mode]=".sprintf('%o',$stat['mode']).",$check) access via owner rights!");
|
|
return true;
|
|
}
|
|
// check if there's a group access and we have the right membership
|
|
if (($stat['mode'] & ($check << 3)) == ($check << 3) && $stat['gid'])
|
|
{
|
|
if (($memberships = $GLOBALS['egw']->accounts->memberships(self::$user, true)) && in_array(-abs($stat['gid']), $memberships))
|
|
{
|
|
//error_log(__METHOD__."(path=$path||stat[name]={$stat['name']},stat[mode]=".sprintf('%o',$stat['mode']).",$check) access via group rights!");
|
|
return true;
|
|
}
|
|
}
|
|
// if we check writable and have a readonly mount --> return false, as backends dont know about r/o url parameter
|
|
if ($check == self::WRITABLE && Vfs\StreamWrapper::url_is_readonly($stat['url']))
|
|
{
|
|
return false;
|
|
}
|
|
// check backend for extended acls (only if path given)
|
|
$ret = $path && self::_call_on_backend('check_extended_acl',array(isset($stat['url'])?$stat['url']:$path,$check),true); // true = fail silent if backend does not support
|
|
|
|
//error_log(__METHOD__."(path=$path||stat[name]={$stat['name']},stat[mode]=".sprintf('%o',$stat['mode']).",$check) ".($ret ? 'backend extended acl granted access.' : 'no access!!!'));
|
|
return $ret;
|
|
}
|
|
|
|
/**
|
|
* The stream_wrapper interface checks is_{readable|writable|executable} against the webservers uid,
|
|
* which is wrong in case of our vfs, as we use the current users id and memberships
|
|
*
|
|
* @param string $path
|
|
* @return boolean
|
|
*/
|
|
static function is_writable($path)
|
|
{
|
|
return self::is_readable($path,self::WRITABLE);
|
|
}
|
|
|
|
/**
|
|
* The stream_wrapper interface checks is_{readable|writable|executable} against the webservers uid,
|
|
* which is wrong in case of our vfs, as we use the current users id and memberships
|
|
*
|
|
* @param string $path
|
|
* @return boolean
|
|
*/
|
|
static function is_executable($path)
|
|
{
|
|
return self::is_readable($path,self::EXECUTABLE);
|
|
}
|
|
|
|
/**
|
|
* Check if path is a script and write access would be denied by backend
|
|
*
|
|
* @param string $path
|
|
* @return boolean true if $path is a script AND exec mount-option is NOT set, false otherwise
|
|
*/
|
|
static function deny_script($path)
|
|
{
|
|
return self::_call_on_backend('deny_script',array($path),true);
|
|
}
|
|
|
|
/**
|
|
* Name of EACL array in session
|
|
*/
|
|
const SESSION_EACL = 'session-eacl';
|
|
|
|
/**
|
|
* Set or delete extended acl for a given path and owner (or delete them if is_null($rights)
|
|
*
|
|
* Does NOT check if user has the rights to set the extended acl for the given url/path!
|
|
*
|
|
* @param string $url string with path
|
|
* @param int $rights =null rights to set, or null to delete the entry
|
|
* @param int|boolean $owner =null owner for whom to set the rights, null for the current user, or false to delete all rights for $path
|
|
* @param boolean $session_only =false true: set eacl only for this session, does NO further checks currently!
|
|
* @return boolean true if acl is set/deleted, false on error
|
|
*/
|
|
static function eacl($url,$rights=null,$owner=null,$session_only=false)
|
|
{
|
|
if ($session_only)
|
|
{
|
|
$session_eacls =& Cache::getSession(__CLASS__, self::SESSION_EACL);
|
|
$session_eacls[] = array(
|
|
'path' => $url[0] == '/' ? $url : self::parse_url($url, PHP_URL_PATH),
|
|
'owner' => $owner ? $owner : self::$user,
|
|
'rights' => $rights,
|
|
);
|
|
return true;
|
|
}
|
|
return self::_call_on_backend('eacl',array($url,$rights,$owner));
|
|
}
|
|
|
|
/**
|
|
* Get all ext. ACL set for a path
|
|
*
|
|
* Calls itself recursive, to get the parent directories
|
|
*
|
|
* @param string $path
|
|
* @return array|boolean array with array('path'=>$path,'owner'=>$owner,'rights'=>$rights) or false if $path not found
|
|
*/
|
|
static function get_eacl($path)
|
|
{
|
|
$eacls = self::_call_on_backend('get_eacl',array($path),true); // true = fail silent (no PHP Warning)
|
|
|
|
$session_eacls =& Cache::getSession(__CLASS__, self::SESSION_EACL);
|
|
if ($session_eacls)
|
|
{
|
|
// eacl is recursive, therefore we have to match all parent-dirs too
|
|
$paths = array($path);
|
|
while ($path && $path != '/')
|
|
{
|
|
$paths[] = $path = self::dirname($path);
|
|
}
|
|
foreach((array)$session_eacls as $eacl)
|
|
{
|
|
if (in_array($eacl['path'], $paths))
|
|
{
|
|
$eacls[] = $eacl;
|
|
}
|
|
}
|
|
|
|
// sort by length descending, to show precedence
|
|
usort($eacls, function($a, $b) {
|
|
return strlen($b['path']) - strlen($a['path']);
|
|
});
|
|
}
|
|
return $eacls;
|
|
}
|
|
|
|
/**
|
|
* Store properties for a single ressource (file or dir)
|
|
*
|
|
* @param string $path string with path
|
|
* @param array $props array of array with values for keys 'name', 'ns', 'val' (null to delete the prop)
|
|
* @return boolean true if props are updated, false otherwise (eg. ressource not found)
|
|
*/
|
|
static function proppatch($path,array $props)
|
|
{
|
|
return self::_call_on_backend('proppatch',array($path,$props));
|
|
}
|
|
|
|
/**
|
|
* Default namespace for properties set by eGroupware: comment or custom fields (leading #)
|
|
*
|
|
*/
|
|
const DEFAULT_PROP_NAMESPACE = 'http://egroupware.org/';
|
|
|
|
/**
|
|
* Read properties for a ressource (file, dir or all files of a dir)
|
|
*
|
|
* @param array|string $path (array of) string with path
|
|
* @param string $ns ='http://egroupware.org/' namespace if propfind should be limited to a single one, otherwise use null
|
|
* @return array|boolean array with props (values for keys 'name', 'ns', 'val'), or path => array of props for is_array($path)
|
|
* false if $path does not exist
|
|
*/
|
|
static function propfind($path,$ns=self::DEFAULT_PROP_NAMESPACE)
|
|
{
|
|
return self::_call_on_backend('propfind',array($path,$ns),true); // true = fail silent (no PHP Warning)
|
|
}
|
|
|
|
/**
|
|
* Private constructor to prevent instanciating this class, only it's static methods should be used
|
|
*/
|
|
private function __construct()
|
|
{
|
|
|
|
}
|
|
|
|
/**
|
|
* Convert a symbolic mode string or octal mode to an integer
|
|
*
|
|
* @param string|int $set comma separated mode string to set [ugo]+[+=-]+[rwx]+
|
|
* @param int $mode =0 current mode of the file, necessary for +/- operation
|
|
* @return int
|
|
*/
|
|
static function mode2int($set,$mode=0)
|
|
{
|
|
if (is_int($set)) // already an integer
|
|
{
|
|
return $set;
|
|
}
|
|
if (is_numeric($set)) // octal string
|
|
{
|
|
//error_log(__METHOD__."($set,$mode) returning ".(int)base_convert($set,8,10));
|
|
return (int)base_convert($set,8,10); // convert octal to decimal
|
|
}
|
|
foreach(explode(',',$set) as $s)
|
|
{
|
|
$matches = null;
|
|
if (!preg_match($use='/^([ugoa]*)([+=-]+)([rwx]+)$/',$s,$matches))
|
|
{
|
|
$use = str_replace(array('/','^','$','(',')'),'',$use);
|
|
throw new Exception\WrongUserinput("$s is not an allowed mode, use $use !");
|
|
}
|
|
$base = (strpos($matches[3],'r') !== false ? self::READABLE : 0) |
|
|
(strpos($matches[3],'w') !== false ? self::WRITABLE : 0) |
|
|
(strpos($matches[3],'x') !== false ? self::EXECUTABLE : 0);
|
|
|
|
for($n = $m = 0; $n < strlen($matches[1]); $n++)
|
|
{
|
|
switch($matches[1][$n])
|
|
{
|
|
case 'o':
|
|
$m |= $base;
|
|
break;
|
|
case 'g':
|
|
$m |= $base << 3;
|
|
break;
|
|
case 'u':
|
|
$m |= $base << 6;
|
|
break;
|
|
default:
|
|
case 'a':
|
|
$m = $base | ($base << 3) | ($base << 6);
|
|
}
|
|
}
|
|
switch($matches[2])
|
|
{
|
|
case '+':
|
|
$mode |= $m;
|
|
break;
|
|
case '=':
|
|
$mode = $m;
|
|
break;
|
|
case '-':
|
|
$mode &= ~$m;
|
|
}
|
|
}
|
|
//error_log(__METHOD__."($set,) returning ".sprintf('%o',$mode));
|
|
return $mode;
|
|
}
|
|
|
|
/**
|
|
* Convert a numerical mode to a symbolic mode-string
|
|
*
|
|
* @param int $mode
|
|
* @return string
|
|
*/
|
|
static function int2mode( $mode )
|
|
{
|
|
if(($mode & self::MODE_LINK) == self::MODE_LINK) // Symbolic Link
|
|
{
|
|
$sP = 'l';
|
|
}
|
|
elseif(($mode & 0xC000) == 0xC000) // Socket
|
|
{
|
|
$sP = 's';
|
|
}
|
|
elseif($mode & 0x1000) // FIFO pipe
|
|
{
|
|
$sP = 'p';
|
|
}
|
|
elseif($mode & 0x2000) // Character special
|
|
{
|
|
$sP = 'c';
|
|
}
|
|
elseif($mode & 0x4000) // Directory
|
|
{
|
|
$sP = 'd';
|
|
}
|
|
elseif($mode & 0x6000) // Block special
|
|
{
|
|
$sP = 'b';
|
|
}
|
|
elseif($mode & 0x8000) // Regular
|
|
{
|
|
$sP = '-';
|
|
}
|
|
else // UNKNOWN
|
|
{
|
|
$sP = 'u';
|
|
}
|
|
|
|
// owner
|
|
$sP .= (($mode & 0x0100) ? 'r' : '-') .
|
|
(($mode & 0x0080) ? 'w' : '-') .
|
|
(($mode & 0x0040) ? (($mode & 0x0800) ? 's' : 'x' ) :
|
|
(($mode & 0x0800) ? 'S' : '-'));
|
|
|
|
// group
|
|
$sP .= (($mode & 0x0020) ? 'r' : '-') .
|
|
(($mode & 0x0010) ? 'w' : '-') .
|
|
(($mode & 0x0008) ? (($mode & 0x0400) ? 's' : 'x' ) :
|
|
(($mode & 0x0400) ? 'S' : '-'));
|
|
|
|
// world
|
|
$sP .= (($mode & 0x0004) ? 'r' : '-') .
|
|
(($mode & 0x0002) ? 'w' : '-') .
|
|
(($mode & 0x0001) ? (($mode & 0x0200) ? 't' : 'x' ) :
|
|
(($mode & 0x0200) ? 'T' : '-'));
|
|
|
|
return $sP;
|
|
}
|
|
|
|
/**
|
|
* Get the closest mime icon
|
|
*
|
|
* @param string $mime_type
|
|
* @param boolean $et_image =true return $app/$icon string for etemplate (default) or url for false
|
|
* @param int $size =128
|
|
* @return string
|
|
*/
|
|
static function mime_icon($mime_type, $et_image=true, $size=128)
|
|
{
|
|
if ($mime_type == self::DIR_MIME_TYPE)
|
|
{
|
|
$mime_type = 'Directory';
|
|
}
|
|
if(!$mime_type)
|
|
{
|
|
$mime_type = 'unknown';
|
|
}
|
|
$mime_full = strtolower(str_replace ('/','_',$mime_type));
|
|
list($mime_part) = explode('_',$mime_full);
|
|
|
|
if (!($img=Image::find('etemplate',$icon='mime'.$size.'_'.$mime_full)) &&
|
|
// check mime-alias-map before falling back to more generic icons
|
|
!(isset(MimeMagic::$mime_alias_map[$mime_type]) &&
|
|
($img=Image::find('etemplate',$icon='mime'.$size.'_'.str_replace('/','_',MimeMagic::$mime_alias_map[$mime_full])))) &&
|
|
!($img=Image::find('etemplate',$icon='mime'.$size.'_'.$mime_part)))
|
|
{
|
|
$img = Image::find('etemplate',$icon='mime'.$size.'_unknown');
|
|
}
|
|
return $et_image ? 'etemplate/'.$icon : $img;
|
|
}
|
|
|
|
/**
|
|
* Human readable size values in k, M or G
|
|
*
|
|
* @param int $size
|
|
* @return string
|
|
*/
|
|
static function hsize($size)
|
|
{
|
|
if ($size < 1024) return $size;
|
|
if ($size < 1024*1024) return sprintf('%3.1lfk',(float)$size/1024);
|
|
if ($size < 1024*1024*1024) return sprintf('%3.1lfM',(float)$size/(1024*1024));
|
|
return sprintf('%3.1lfG',(float)$size/(1024*1024*1024));
|
|
}
|
|
|
|
/**
|
|
* Size in bytes, from human readable
|
|
*
|
|
* From PHP ini_get docs, Ivo Mandalski 15-Nov-2011 08:27
|
|
*/
|
|
static function int_size($_val)
|
|
{
|
|
if(empty($_val))return 0;
|
|
|
|
$val = trim($_val);
|
|
|
|
$matches = null;
|
|
preg_match('#([0-9]+)[\s]*([a-z]+)#i', $val, $matches);
|
|
|
|
$last = '';
|
|
if(isset($matches[2])){
|
|
$last = $matches[2];
|
|
}
|
|
|
|
if(isset($matches[1])){
|
|
$val = (int) $matches[1];
|
|
}
|
|
|
|
switch (strtolower($last))
|
|
{
|
|
case 'g':
|
|
case 'gb':
|
|
$val *= 1024;
|
|
case 'm':
|
|
case 'mb':
|
|
$val *= 1024;
|
|
case 'k':
|
|
case 'kb':
|
|
$val *= 1024;
|
|
}
|
|
|
|
return (int) $val;
|
|
}
|
|
|
|
/**
|
|
* like basename($path), but also working if the 1. char of the basename is non-ascii
|
|
*
|
|
* @param string $_path
|
|
* @return string
|
|
*/
|
|
static function basename($_path)
|
|
{
|
|
list($path) = explode('?',$_path); // remove query
|
|
$parts = explode('/',$path);
|
|
|
|
return array_pop($parts);
|
|
}
|
|
|
|
/**
|
|
* Utf-8 save version of parse_url
|
|
*
|
|
* Does caching withing request, to not have to parse urls over and over again.
|
|
*
|
|
* @param string $url
|
|
* @param int $component =-1 PHP_URL_* constants
|
|
* @return array|string|boolean on success array or string, if $component given, or false on failure
|
|
*/
|
|
static function parse_url($url, $component=-1)
|
|
{
|
|
static $component2str = array(
|
|
PHP_URL_SCHEME => 'scheme',
|
|
PHP_URL_HOST => 'host',
|
|
PHP_URL_PORT => 'port',
|
|
PHP_URL_USER => 'user',
|
|
PHP_URL_PASS => 'pass',
|
|
PHP_URL_PATH => 'path',
|
|
PHP_URL_QUERY => 'query',
|
|
PHP_URL_FRAGMENT => 'fragment',
|
|
);
|
|
static $cache = array(); // some caching
|
|
|
|
$result =& $cache[$url];
|
|
|
|
if (!isset($result))
|
|
{
|
|
// Build arrays of values we need to decode before parsing
|
|
static $entities = array('%21', '%2A', '%27', '%28', '%29', '%3B', '%3A', '%40', '%26', '%3D', '%24', '%2C', '%2F', '%3F', '%23', '%5B', '%5D');
|
|
static $replacements = array('!', '*', "'", "(", ")", ";", ":", "@", "&", "=", "$", ",", "/", "?", "#", "[", "]");
|
|
static $str_replace = null;
|
|
if (!isset($str_replace)) $str_replace = function_exists('mb_str_replace') ? 'mb_str_replace' : 'str_replace';
|
|
|
|
// Create encoded URL with special URL characters decoded so it can be parsed
|
|
// All other characters will be encoded
|
|
$encodedURL = $str_replace($entities, $replacements, urlencode($url));
|
|
|
|
// Parse the encoded URL
|
|
$result = $encodedParts = parse_url($encodedURL);
|
|
|
|
// Now, decode each value of the resulting array
|
|
if ($encodedParts)
|
|
{
|
|
$result = array();
|
|
foreach ($encodedParts as $key => $value)
|
|
{
|
|
$result[$key] = urldecode($str_replace($replacements, $entities, $value));
|
|
}
|
|
}
|
|
}
|
|
return $component >= 0 ? $result[$component2str[$component]] : $result;
|
|
}
|
|
|
|
/**
|
|
* Get the directory / parent of a given path or url(!), return false for '/'!
|
|
*
|
|
* Also works around PHP under Windows returning dirname('/something') === '\\', which is NOT understood by EGroupware's VFS!
|
|
*
|
|
* @param string $_url path or url
|
|
* @return string|boolean parent or false if there's none ($path == '/')
|
|
*/
|
|
static function dirname($_url)
|
|
{
|
|
list($url,$query) = explode('?',$_url,2); // strip the query first, as it can contain slashes
|
|
|
|
if ($url == '/' || $url[0] != '/' && self::parse_url($url,PHP_URL_PATH) == '/')
|
|
{
|
|
//error_log(__METHOD__."($url) returning FALSE: already in root!");
|
|
return false;
|
|
}
|
|
$parts = explode('/',$url);
|
|
if (substr($url,-1) == '/') array_pop($parts);
|
|
array_pop($parts);
|
|
if ($url[0] != '/' && count($parts) == 3 || count($parts) == 1 && $parts[0] === '')
|
|
{
|
|
array_push($parts,''); // scheme://host is wrong (no path), has to be scheme://host/
|
|
}
|
|
//error_log(__METHOD__."($url)=".implode('/',$parts).($query ? '?'.$query : ''));
|
|
return implode('/',$parts).($query ? '?'.$query : '');
|
|
}
|
|
|
|
/**
|
|
* Check if the current use has owner rights for the given path or stat
|
|
*
|
|
* We define all eGW admins the owner of the group directories!
|
|
*
|
|
* @param string $path
|
|
* @param array $stat =null stat for path, default queried by this function
|
|
* @return boolean
|
|
*/
|
|
static function has_owner_rights($path,array $stat=null)
|
|
{
|
|
if (!$stat)
|
|
{
|
|
$vfs = new Vfs\StreamWrapper();
|
|
$stat = $vfs->url_stat($path,0);
|
|
}
|
|
return $stat['uid'] == self::$user && // (current) user is the owner
|
|
// in sharing current user != self::$user and should NOT have owner rights
|
|
$GLOBALS['egw_info']['user']['account_id'] == self::$user ||
|
|
self::$is_root || // class runs with root rights
|
|
!$stat['uid'] && $stat['gid'] && self::$is_admin; // group directory and user is an eGW admin
|
|
}
|
|
|
|
/**
|
|
* Concat a relative path to an url, taking into account, that the url might already end with a slash or the path starts with one or is empty
|
|
*
|
|
* Also normalizing the path, as the relative path can contain ../
|
|
*
|
|
* @param string $_url base url or path, might end in a /
|
|
* @param string $relative relative path to add to $url
|
|
* @return string
|
|
*/
|
|
static function concat($_url,$relative)
|
|
{
|
|
list($url,$query) = explode('?',$_url,2);
|
|
if (substr($url,-1) == '/') $url = substr($url,0,-1);
|
|
$ret = ($relative === '' || $relative[0] == '/' ? $url.$relative : $url.'/'.$relative);
|
|
|
|
// now normalize the path (remove "/something/..")
|
|
while (strpos($ret,'/../') !== false)
|
|
{
|
|
list($a_str,$b_str) = explode('/../',$ret,2);
|
|
$a = explode('/',$a_str);
|
|
array_pop($a);
|
|
$b = explode('/',$b_str);
|
|
$ret = implode('/',array_merge($a,$b));
|
|
}
|
|
return $ret.($query ? (strpos($url,'?')===false ? '?' : '&').$query : '');
|
|
}
|
|
|
|
/**
|
|
* Build an url from it's components (reverse of parse_url)
|
|
*
|
|
* @param array $url_parts values for keys 'scheme', 'host', 'user', 'pass', 'query', 'fragment' (all but 'path' are optional)
|
|
* @return string
|
|
*/
|
|
static function build_url(array $url_parts)
|
|
{
|
|
$url = (!isset($url_parts['scheme'])?'':$url_parts['scheme'].'://'.
|
|
(!isset($url_parts['user'])?'':$url_parts['user'].(!isset($url_parts['pass'])?'':':'.$url_parts['pass']).'@').
|
|
$url_parts['host']).$url_parts['path'].
|
|
(!isset($url_parts['query'])?'':'?'.$url_parts['query']).
|
|
(!isset($url_parts['fragment'])?'':'?'.$url_parts['fragment']);
|
|
//error_log(__METHOD__.'('.array2string($url_parts).") = '".$url."'");
|
|
return $url;
|
|
}
|
|
|
|
/**
|
|
* URL to download a file
|
|
*
|
|
* We use our webdav handler as download url instead of an own download method.
|
|
* The webdav hander (filemanager/webdav.php) recognices eGW's session cookie and of cause understands regular GET requests.
|
|
*
|
|
* Please note: If you dont use eTemplate or the html class, you have to run this url throught egw::link() to get a full url
|
|
*
|
|
* @param string $path
|
|
* @param boolean $force_download =false add header('Content-disposition: filename="' . basename($path) . '"'), currently not supported!
|
|
* @todo get $force_download working through webdav
|
|
* @return string
|
|
*/
|
|
static function download_url($path,$force_download=false)
|
|
{
|
|
if (($url = self::_call_on_backend('download_url',array($path,$force_download),true)))
|
|
{
|
|
return $url;
|
|
}
|
|
if ($path[0] != '/')
|
|
{
|
|
$path = self::parse_url($path,PHP_URL_PATH);
|
|
}
|
|
// we do NOT need to encode % itself, as our path are already url encoded, with the exception of ' ' and '+'
|
|
// we urlencode double quotes '"', as that fixes many problems in html markup
|
|
return '/webdav.php'.strtr($path,array('+' => '%2B',' ' => '%20','"' => '%22')).($force_download ? '?download' : '');
|
|
}
|
|
|
|
/**
|
|
* Download the given file list as a ZIP
|
|
*
|
|
* @param array $_files List of files to include in the zip
|
|
* @param string $name optional Zip file name. If not provided, it will be determined automatically from the files
|
|
*
|
|
* @todo use https://github.com/maennchen/ZipStream-PHP to not assamble all files in memmory
|
|
*/
|
|
public static function download_zip(Array $_files, $name = false)
|
|
{
|
|
//error_log(__METHOD__ . ': '.implode(',',$_files));
|
|
|
|
// Create zip file
|
|
$zip_file = tempnam($GLOBALS['egw_info']['server']['temp_dir'], 'zip');
|
|
|
|
$zip = new \ZipArchive();
|
|
if (!$zip->open($zip_file, \ZipArchive::OVERWRITE))
|
|
{
|
|
throw new Exception("Cannot open zip file for writing.");
|
|
}
|
|
|
|
// Find lowest common directory, to use relative paths
|
|
// eg: User selected /home/nathan/picture.jpg, /home/Pictures/logo.jpg
|
|
// We want /home
|
|
$dirs = array();
|
|
foreach($_files as $file)
|
|
{
|
|
$dirs[] = self::dirname($file);
|
|
}
|
|
$paths = array_unique($dirs);
|
|
if(count($paths) > 0)
|
|
{
|
|
// Shortest to longest
|
|
usort($paths, function($a, $b) {
|
|
return strlen($a) - strlen($b);
|
|
});
|
|
|
|
// Start with shortest, pop off sub-directories that don't match
|
|
$parts = explode('/',$paths[0]);
|
|
foreach($paths as $path)
|
|
{
|
|
$dirs = explode('/',$path);
|
|
foreach($dirs as $dir_index => $dir)
|
|
{
|
|
if($parts[$dir_index] && $parts[$dir_index] != $dir)
|
|
{
|
|
unset($parts[$dir_index]);
|
|
}
|
|
}
|
|
}
|
|
$base_dir = implode('/', $parts);
|
|
}
|
|
else
|
|
{
|
|
$base_dir = $paths[0];
|
|
}
|
|
|
|
// Remove 'unsafe' filename characters
|
|
// (en.wikipedia.org/wiki/Filename#Reserved_characters_and_words)
|
|
$replace = array(
|
|
// Linux
|
|
'/',
|
|
// Windows
|
|
'\\','?','%','*',':','|',/*'.',*/ '"','<','>'
|
|
);
|
|
|
|
// A nice name for the user,
|
|
$filename = $GLOBALS['egw_info']['server']['site_title'] . '_' .
|
|
str_replace($replace,'_',(
|
|
$name ? $name : (
|
|
count($_files) == 1 ?
|
|
// Just one file (hopefully a directory?) selected
|
|
self::basename($_files[0]) :
|
|
// Use the lowest common directory (eg: Infolog, Open, nathan)
|
|
self::basename($base_dir))
|
|
)) . '.zip';
|
|
|
|
// Make sure basename is a dir
|
|
if(substr($base_dir, -1) != '/')
|
|
{
|
|
$base_dir .='/';
|
|
}
|
|
|
|
// Go into directories, find them all
|
|
$files = self::find($_files);
|
|
$links = array();
|
|
|
|
// We need to remove them _after_ we're done
|
|
$tempfiles = array();
|
|
|
|
// Give 1 second per file, but try to allow more time for big files when amount of files is low
|
|
set_time_limit((count($files)<=9?10:count($files)));
|
|
|
|
// Add files to archive
|
|
foreach($files as &$addfile)
|
|
{
|
|
// Use relative paths inside zip
|
|
$relative = substr($addfile, strlen($base_dir));
|
|
|
|
// Use safe names - replace unsafe chars, convert to ASCII (ZIP spec says CP437, but we'll try)
|
|
$path = explode('/',$relative);
|
|
$_name = Translation::convert(Translation::to_ascii(implode('/', str_replace($replace,'_',$path))),false,'ASCII');
|
|
|
|
// Don't go infinite with app entries
|
|
if(self::is_link($addfile))
|
|
{
|
|
if(in_array($addfile, $links)) continue;
|
|
$links[] = $addfile;
|
|
}
|
|
// Add directory - if empty, client app might not show it though
|
|
if(self::is_dir($addfile))
|
|
{
|
|
// Zip directories
|
|
$zip->addEmptyDir($addfile);
|
|
}
|
|
else if(self::is_readable($addfile))
|
|
{
|
|
// Copy to temp file, as ZipArchive fails to read VFS
|
|
$temp = tempnam($GLOBALS['egw_info']['server']['temp_dir'], 'zip_');
|
|
$from = self::fopen($addfile,'r');
|
|
$to = fopen($temp,'w');
|
|
if(!stream_copy_to_stream($from,$to) || !$zip->addFile($temp, $_name))
|
|
{
|
|
unlink($temp);
|
|
trigger_error("Could not add $addfile to ZIP file", E_USER_ERROR);
|
|
continue;
|
|
}
|
|
// Keep temp file until _after_ zipping is done
|
|
$tempfiles[] = $temp;
|
|
|
|
// Add comment in
|
|
$props = self::propfind($addfile);
|
|
if($props)
|
|
{
|
|
$comment = self::find_prop($props,'comment');
|
|
if($comment)
|
|
{
|
|
$zip->setCommentName($_name, $comment);
|
|
}
|
|
}
|
|
unset($props);
|
|
}
|
|
}
|
|
|
|
// Set a comment to help tell them apart
|
|
$zip->setArchiveComment(lang('Created by %1', $GLOBALS['egw_info']['user']['account_lid']) . ' ' .DateTime::to());
|
|
|
|
// Record total for debug, not available after close()
|
|
$total_files = $zip->numFiles;
|
|
|
|
$result = $zip->close();
|
|
if(!$result || !filesize($zip_file))
|
|
{
|
|
error_log('close() result: '.array2string($result));
|
|
return 'Error creating zip file';
|
|
}
|
|
|
|
error_log("Total files: " . $total_files . " Peak memory to zip: " . self::hsize(memory_get_peak_usage(true)));
|
|
|
|
// Stop any buffering
|
|
while(ob_get_level() > 0)
|
|
{
|
|
ob_end_clean();
|
|
}
|
|
|
|
// Stream the file to the client
|
|
header("Content-Type: application/zip");
|
|
header("Content-Length: " . filesize($zip_file));
|
|
header("Content-Disposition: attachment; filename=\"$filename\"");
|
|
readfile($zip_file);
|
|
|
|
unlink($zip_file);
|
|
foreach($tempfiles as $temp_file)
|
|
{
|
|
unlink($temp_file);
|
|
}
|
|
|
|
// Make sure to exit after, if you don't want to add to the ZIP
|
|
}
|
|
|
|
/**
|
|
* We cache locks within a request, as HTTP_WebDAV_Server generates so many, that it can be a bottleneck
|
|
*
|
|
* @var array
|
|
*/
|
|
static protected $lock_cache;
|
|
|
|
/**
|
|
* Log (to error log) all calls to lock(), unlock() or checkLock()
|
|
*
|
|
*/
|
|
const LOCK_DEBUG = false;
|
|
|
|
/**
|
|
* lock a ressource/path
|
|
*
|
|
* @param string $path path or url
|
|
* @param string &$token
|
|
* @param int &$timeout
|
|
* @param string &$owner
|
|
* @param string &$scope
|
|
* @param string &$type
|
|
* @param boolean $update =false
|
|
* @param boolean $check_writable =true should we check if the ressource is writable, before granting locks, default yes
|
|
* @return boolean true on success
|
|
*/
|
|
static function lock($path,&$token,&$timeout,&$owner,&$scope,&$type,$update=false,$check_writable=true)
|
|
{
|
|
// we require write rights to lock/unlock a resource
|
|
if (!$path || $update && !$token || $check_writable &&
|
|
!(self::is_writable($path) || !self::file_exists($path) && ($dir=self::dirname($path)) && self::is_writable($dir)))
|
|
{
|
|
return false;
|
|
}
|
|
// remove the lock info evtl. set in the cache
|
|
unset(self::$lock_cache[$path]);
|
|
|
|
if ($timeout < 1000000) // < 1000000 is a relative timestamp, so we add the current time
|
|
{
|
|
$timeout += time();
|
|
}
|
|
|
|
if ($update) // Lock Update
|
|
{
|
|
if (($ret = (boolean)($row = self::$db->select(self::LOCK_TABLE,array('lock_owner','lock_exclusive','lock_write'),array(
|
|
'lock_path' => $path,
|
|
'lock_token' => $token,
|
|
),__LINE__,__FILE__)->fetch())))
|
|
{
|
|
$owner = $row['lock_owner'];
|
|
$scope = Db::from_bool($row['lock_exclusive']) ? 'exclusive' : 'shared';
|
|
$type = Db::from_bool($row['lock_write']) ? 'write' : 'read';
|
|
|
|
self::$db->update(self::LOCK_TABLE,array(
|
|
'lock_expires' => $timeout,
|
|
'lock_modified' => time(),
|
|
),array(
|
|
'lock_path' => $path,
|
|
'lock_token' => $token,
|
|
),__LINE__,__FILE__);
|
|
}
|
|
}
|
|
// HTTP_WebDAV_Server does this check before calling LOCK, but we want to be complete and usable outside WebDAV
|
|
elseif(($lock = self::checkLock($path)) && ($lock['scope'] == 'exclusive' || $scope == 'exclusive'))
|
|
{
|
|
$ret = false; // there's alread a lock
|
|
}
|
|
else
|
|
{
|
|
// HTTP_WebDAV_Server sets owner and token, but we want to be complete and usable outside WebDAV
|
|
if (!$owner || $owner == 'unknown')
|
|
{
|
|
$owner = 'mailto:'.$GLOBALS['egw_info']['user']['account_email'];
|
|
}
|
|
if (!$token)
|
|
{
|
|
require_once(__DIR__.'/WebDAV/Server.php');
|
|
$token = HTTP_WebDAV_Server::_new_locktoken();
|
|
}
|
|
try {
|
|
self::$db->insert(self::LOCK_TABLE,array(
|
|
'lock_token' => $token,
|
|
'lock_path' => $path,
|
|
'lock_created' => time(),
|
|
'lock_modified' => time(),
|
|
'lock_owner' => $owner,
|
|
'lock_expires' => $timeout,
|
|
'lock_exclusive' => $scope == 'exclusive',
|
|
'lock_write' => $type == 'write',
|
|
),false,__LINE__,__FILE__);
|
|
$ret = true;
|
|
}
|
|
catch(Db\Exception $e) {
|
|
unset($e);
|
|
$ret = false; // there's already a lock
|
|
}
|
|
}
|
|
if (self::LOCK_DEBUG) error_log(__METHOD__."($path,$token,$timeout,$owner,$scope,$type,update=$update,check_writable=$check_writable) returns ".($ret ? 'true' : 'false'));
|
|
return $ret;
|
|
}
|
|
|
|
/**
|
|
* unlock a ressource/path
|
|
*
|
|
* @param string $path path to unlock
|
|
* @param string $token locktoken
|
|
* @param boolean $check_writable =true should we check if the ressource is writable, before granting locks, default yes
|
|
* @return boolean true on success
|
|
*/
|
|
static function unlock($path,$token,$check_writable=true)
|
|
{
|
|
// we require write rights to lock/unlock a resource
|
|
if ($check_writable && !self::is_writable($path))
|
|
{
|
|
return false;
|
|
}
|
|
if (($ret = self::$db->delete(self::LOCK_TABLE,array(
|
|
'lock_path' => $path,
|
|
'lock_token' => $token,
|
|
),__LINE__,__FILE__) && self::$db->affected_rows()))
|
|
{
|
|
// remove the lock from the cache too
|
|
unset(self::$lock_cache[$path]);
|
|
}
|
|
if (self::LOCK_DEBUG) error_log(__METHOD__."($path,$token,$check_writable) returns ".($ret ? 'true' : 'false'));
|
|
return $ret;
|
|
}
|
|
|
|
/**
|
|
* checkLock() helper
|
|
*
|
|
* @param string resource path to check for locks
|
|
* @return array|boolean false if there's no lock, else array with lock info
|
|
*/
|
|
static function checkLock($path)
|
|
{
|
|
if (isset(self::$lock_cache[$path]))
|
|
{
|
|
if (self::LOCK_DEBUG) error_log(__METHOD__."($path) returns from CACHE ".str_replace(array("\n",' '),'',print_r(self::$lock_cache[$path],true)));
|
|
return self::$lock_cache[$path];
|
|
}
|
|
$where = 'lock_path='.self::$db->quote($path);
|
|
// ToDo: additional check parent dirs for locks and children of the requested directory
|
|
//$where .= ' OR '.self::$db->quote($path).' LIKE '.self::$db->concat('lock_path',"'%'").' OR lock_path LIKE '.self::$db->quote($path.'%');
|
|
// ToDo: shared locks can return multiple rows
|
|
if (($result = self::$db->select(self::LOCK_TABLE,'*',$where,__LINE__,__FILE__)->fetch()))
|
|
{
|
|
$result = Db::strip_array_keys($result,'lock_');
|
|
$result['type'] = Db::from_bool($result['write']) ? 'write' : 'read';
|
|
$result['scope'] = Db::from_bool($result['exclusive']) ? 'exclusive' : 'shared';
|
|
$result['depth'] = Db::from_bool($result['recursive']) ? 'infinite' : 0;
|
|
}
|
|
if ($result && $result['expires'] < time()) // lock is expired --> remove it
|
|
{
|
|
self::$db->delete(self::LOCK_TABLE,array(
|
|
'lock_path' => $result['path'],
|
|
'lock_token' => $result['token'],
|
|
),__LINE__,__FILE__);
|
|
|
|
if (self::LOCK_DEBUG) error_log(__METHOD__."($path) lock is expired at ".date('Y-m-d H:i:s',$result['expires'])." --> removed");
|
|
$result = false;
|
|
}
|
|
if (self::LOCK_DEBUG) error_log(__METHOD__."($path) returns ".($result?array2string($result):'false'));
|
|
return self::$lock_cache[$path] = $result;
|
|
}
|
|
|
|
/**
|
|
* Get backend specific information (data and etemplate), to integrate as tab in filemanagers settings dialog
|
|
*
|
|
* @param string $path
|
|
* @param array $content =null
|
|
* @return array|boolean array with values for keys 'data','etemplate','name','label','help' or false if not supported by backend
|
|
*/
|
|
static function getExtraInfo($path,array $content=null)
|
|
{
|
|
$extra = array();
|
|
if (($extra_info = self::_call_on_backend('extra_info',array($path,$content),true))) // true = fail silent if backend does NOT support it
|
|
{
|
|
$extra[] = $extra_info;
|
|
}
|
|
|
|
if (($vfs_extra = Hooks::process(array(
|
|
'location' => 'vfs_extra',
|
|
'path' => $path,
|
|
'content' => $content,
|
|
))))
|
|
{
|
|
foreach($vfs_extra as $data)
|
|
{
|
|
$extra = $extra ? array_merge($extra, $data) : $data;
|
|
}
|
|
}
|
|
return $extra;
|
|
}
|
|
|
|
/**
|
|
* Mapps entries of applications to a path for the locking
|
|
*
|
|
* @param string $app
|
|
* @param int|string $id
|
|
* @return string
|
|
*/
|
|
static function app_entry_lock_path($app,$id)
|
|
{
|
|
return "/apps/$app/entry/$id";
|
|
}
|
|
|
|
/**
|
|
* Encoding of various special characters, which can NOT be unencoded in file-names, as they have special meanings in URL's
|
|
*
|
|
* @var array
|
|
*/
|
|
static public $encode = array(
|
|
//'%' => '%25', // % should be encoded, but easily leads to double encoding, therefore better NOT encodig it
|
|
'#' => '%23',
|
|
'?' => '%3F',
|
|
'/' => '', // better remove it completly
|
|
);
|
|
|
|
/**
|
|
* Encode a path component: replacing certain chars with their urlencoded counterparts
|
|
*
|
|
* Not all chars get encoded, slashes '/' are silently removed!
|
|
*
|
|
* To reverse the encoding, eg. to display a filename to the user, you have to use self::decodePath()
|
|
*
|
|
* @param string|array $component
|
|
* @return string|array
|
|
*/
|
|
static public function encodePathComponent($component)
|
|
{
|
|
return str_replace(array_keys(self::$encode),array_values(self::$encode),$component);
|
|
}
|
|
|
|
/**
|
|
* Encode a path: replacing certain chars with their urlencoded counterparts
|
|
*
|
|
* To reverse the encoding, eg. to display a filename to the user, you have to use self::decodePath()
|
|
*
|
|
* @param string $path
|
|
* @return string
|
|
*/
|
|
static public function encodePath($path)
|
|
{
|
|
return implode('/',self::encodePathComponent(explode('/',$path)));
|
|
}
|
|
|
|
/**
|
|
* Decode a path: rawurldecode(): mostly urldecode(), but do NOT decode '+', as we're NOT encoding it!
|
|
*
|
|
* Used eg. to translate a path for displaying to the User.
|
|
*
|
|
* @param string $path
|
|
* @return string
|
|
*/
|
|
static public function decodePath($path)
|
|
{
|
|
return rawurldecode($path);
|
|
}
|
|
|
|
/**
|
|
* Initialise our static vars
|
|
*/
|
|
static function init_static()
|
|
{
|
|
// if special user/vfs_user given (eg. from sharing) use it instead default user/account_id
|
|
self::$user = (int)(isset($GLOBALS['egw_info']['user']['vfs_user']) ?
|
|
$GLOBALS['egw_info']['user']['vfs_user'] : $GLOBALS['egw_info']['user']['account_id']);
|
|
self::$is_admin = isset($GLOBALS['egw_info']['user']['apps']['admin']);
|
|
self::$db = isset($GLOBALS['egw_setup']->db) ? $GLOBALS['egw_setup']->db : $GLOBALS['egw']->db;
|
|
self::$lock_cache = array();
|
|
}
|
|
|
|
/**
|
|
* Returns the URL to the thumbnail of the given file. The thumbnail may simply
|
|
* be the mime-type icon, or - if activated - the preview with the given thsize.
|
|
*
|
|
* @param string $file name of the file
|
|
* @param int $thsize the size of the preview - false if the default should be used.
|
|
* @param string $mime if you already know the mime type of the file, you can supply
|
|
* it here. Otherwise supply "false".
|
|
*/
|
|
public static function thumbnail_url($file, $thsize = false, $mime = false)
|
|
{
|
|
// Retrive the mime-type of the file
|
|
if (!$mime)
|
|
{
|
|
$mime = self::mime_content_type($file);
|
|
}
|
|
|
|
$image = "";
|
|
|
|
// Seperate the mime type into the primary and the secondary part
|
|
list($mime_main, $mime_sub) = explode('/', $mime);
|
|
|
|
if ($mime_main == 'egw')
|
|
{
|
|
$image = Image::find($mime_sub, 'navbar');
|
|
}
|
|
else if ($file && $mime_main == 'image' && in_array($mime_sub, array('png','jpeg','jpg','gif','bmp')) &&
|
|
(string)$GLOBALS['egw_info']['server']['link_list_thumbnail'] != '0' &&
|
|
(string)$GLOBALS['egw_info']['user']['preferences']['common']['link_list_thumbnail'] != '0' &&
|
|
($stat = self::stat($file)) && $stat['size'] < 1500000)
|
|
{
|
|
if (substr($file, 0, 6) == '/apps/')
|
|
{
|
|
$file = self::parse_url(self::resolve_url_symlinks($file), PHP_URL_PATH);
|
|
}
|
|
|
|
//Assemble the thumbnail parameters
|
|
$thparams = array();
|
|
$thparams['path'] = $file;
|
|
if ($thsize)
|
|
{
|
|
$thparams['thsize'] = $thsize;
|
|
}
|
|
$image = $GLOBALS['egw']->link('/api/thumbnail.php', $thparams);
|
|
}
|
|
else
|
|
{
|
|
list($app, $name) = explode("/", self::mime_icon($mime), 2);
|
|
$image = Image::find($app, $name);
|
|
}
|
|
|
|
return $image;
|
|
}
|
|
|
|
/**
|
|
* Get the configured start directory for the current user
|
|
*
|
|
* @return string
|
|
*/
|
|
static public function get_home_dir()
|
|
{
|
|
// with sharing active we have no home, use /
|
|
if ($GLOBALS['egw_info']['user']['account_id'] != self::$user)
|
|
{
|
|
return '/';
|
|
}
|
|
$start = '/home/'.$GLOBALS['egw_info']['user']['account_lid'];
|
|
|
|
// check if user specified a valid startpath in his prefs --> use it
|
|
if (($path = $GLOBALS['egw_info']['user']['preferences']['filemanager']['startfolder']) &&
|
|
$path[0] == '/' && self::is_dir($path) && self::check_access($path, self::READABLE))
|
|
{
|
|
$start = $path;
|
|
}
|
|
return $start;
|
|
}
|
|
|
|
/**
|
|
* Copies the files given in $src to $dst.
|
|
*
|
|
* @param array $src contains the source file
|
|
* @param string $dst is the destination directory
|
|
* @param int& $errs =null on return number of errors happened
|
|
* @param array& $copied =null on return files copied
|
|
* @return boolean true for no errors, false otherwise
|
|
*/
|
|
static public function copy_files(array $src, $dst, &$errs=null, array &$copied=null)
|
|
{
|
|
if (self::is_dir($dst))
|
|
{
|
|
foreach ($src as $file)
|
|
{
|
|
// Check whether the file has already been copied - prevents from
|
|
// recursion
|
|
if (!in_array($file, $copied))
|
|
{
|
|
// Calculate the target filename
|
|
$target = self::concat($dst, self::basename($file));
|
|
|
|
if (self::is_dir($file))
|
|
{
|
|
if ($file !== $target)
|
|
{
|
|
// Create the target directory
|
|
self::mkdir($target,null,STREAM_MKDIR_RECURSIVE);
|
|
|
|
$copied[] = $file;
|
|
$copied[] = $target; // < newly created folder must not be copied again!
|
|
if (self::copy_files(self::find($file), $target,
|
|
$errs, $copied))
|
|
{
|
|
continue;
|
|
}
|
|
}
|
|
|
|
$errs++;
|
|
}
|
|
else
|
|
{
|
|
// Copy a single file - check whether the file should be
|
|
// copied onto itself.
|
|
// TODO: Check whether target file already exists and give
|
|
// return those files so that a dialog might be displayed
|
|
// on the client side which lets the user decide.
|
|
if ($target !== $file && self::copy($file, $target))
|
|
{
|
|
$copied[] = $file;
|
|
}
|
|
else
|
|
{
|
|
$errs++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return $errs == 0;
|
|
}
|
|
|
|
/**
|
|
* Moves the files given in src to dst
|
|
*/
|
|
static public function move_files(array $src, $dst, &$errs, array &$moved)
|
|
{
|
|
if (self::is_dir($dst))
|
|
{
|
|
$vfs = new Vfs\StreamWrapper();
|
|
foreach($src as $file)
|
|
{
|
|
$target = self::concat($dst, self::basename($file));
|
|
|
|
if ($file != $target && $vfs->rename($file, $target))
|
|
{
|
|
$moved[] = $file;
|
|
}
|
|
else
|
|
{
|
|
++$errs;
|
|
}
|
|
}
|
|
|
|
return $errs == 0;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Copy an uploaded file into the vfs, optionally set some properties (eg. comment or other cf's)
|
|
*
|
|
* Treat copying incl. properties as atomar operation in respect of notifications (one notification about an added file).
|
|
*
|
|
* @param array|string|resource $src path to uploaded file or etemplate file array (value for key 'tmp_name'), or resource with opened file
|
|
* @param string $target path or directory to copy uploaded file
|
|
* @param array|string $props =null array with properties (name => value pairs, eg. 'comment' => 'FooBar','#cfname' => 'something'),
|
|
* array as for proppatch (array of array with values for keys 'name', 'val' and optional 'ns') or string with comment
|
|
* @param boolean $check_is_uploaded_file =true should method perform an is_uploaded_file check, default yes
|
|
* @return boolean|array stat array on success, false on error
|
|
*/
|
|
static public function copy_uploaded($src,$target,$props=null,$check_is_uploaded_file=true)
|
|
{
|
|
$tmp_name = is_array($src) ? $src['tmp_name'] : $src;
|
|
|
|
if (self::stat($target) && self::is_dir($target))
|
|
{
|
|
$target = self::concat($target, self::encodePathComponent(is_array($src) ? $src['name'] : basename($tmp_name)));
|
|
}
|
|
if ($check_is_uploaded_file && !is_resource($tmp_name) && !is_uploaded_file($tmp_name))
|
|
{
|
|
if (self::LOG_LEVEL) error_log(__METHOD__."($tmp_name, $target, ".array2string($props).",$check_is_uploaded_file) returning FALSE !is_uploaded_file()");
|
|
return false;
|
|
}
|
|
if (!(self::is_writable($target) || ($dir = self::dirname($target)) && self::is_writable($dir)))
|
|
{
|
|
if (self::LOG_LEVEL) error_log(__METHOD__."($tmp_name, $target, ".array2string($props).",$check_is_uploaded_file) returning FALSE !writable");
|
|
return false;
|
|
}
|
|
if ($props)
|
|
{
|
|
if (!is_array($props)) $props = array(array('name' => 'comment','val' => $props));
|
|
|
|
// if $props is name => value pairs, convert it to internal array or array with values for keys 'name', 'val' and optional 'ns'
|
|
if (!isset($props[0]))
|
|
{
|
|
foreach($props as $name => $val)
|
|
{
|
|
if (($name == 'comment' || $name[0] == '#') && $val) // only copy 'comment' and cfs
|
|
{
|
|
$vfs_props[] = array(
|
|
'name' => $name,
|
|
'val' => $val,
|
|
);
|
|
}
|
|
}
|
|
$props = $vfs_props;
|
|
}
|
|
}
|
|
if ($props)
|
|
{
|
|
// set props before copying the file, so notifications already contain them
|
|
if (!self::stat($target))
|
|
{
|
|
self::touch($target); // create empty file, to be able to attach properties
|
|
// tell vfs stream-wrapper to treat file in following copy as a new file notification-wises
|
|
$context = stream_context_create(array(
|
|
self::SCHEME => array('treat_as_new' => true)
|
|
));
|
|
}
|
|
self::proppatch($target, $props);
|
|
}
|
|
if (is_resource($tmp_name))
|
|
{
|
|
$ret = ($dest = self::fopen($target, 'w', $context)) &&
|
|
stream_copy_to_stream($tmp_name, $dest) !== false &&
|
|
fclose($dest) ? self::stat($target) : false;
|
|
|
|
fclose($tmp_name);
|
|
}
|
|
else
|
|
{
|
|
$ret = ($context ? copy($tmp_name, self::PREFIX.$target, $context) :
|
|
copy($tmp_name, self::PREFIX.$target)) ?
|
|
self::stat($target) : false;
|
|
}
|
|
if (self::LOG_LEVEL > 1 || !$ret && self::LOG_LEVEL) error_log(__METHOD__."($tmp_name, $target, ".array2string($props).") returning ".array2string($ret));
|
|
return $ret;
|
|
}
|
|
|
|
/**
|
|
* Compare two files from vfs or local file-system for identical content
|
|
*
|
|
* VFS files must use URL, to be able to distinguish them eg. from temp. files!
|
|
*
|
|
* @param string $file1 vfs-url or local path, eg. /tmp/some-file.txt or vfs://default/home/user/some-file.txt
|
|
* @param string $file2 -- " --
|
|
* @return boolean true: if files are identical, false: if not or file not found
|
|
*/
|
|
public static function compare($file1, $file2)
|
|
{
|
|
if (filesize($file1) != filesize($file2) ||
|
|
!($fp1 = fopen($file1, 'r')) || !($fp2 = fopen($file2, 'r')))
|
|
{
|
|
//error_log(__METHOD__."($file1, $file2) returning FALSE (different size)");
|
|
return false;
|
|
}
|
|
while (($read1 = fread($fp1, 8192)) !== false &&
|
|
($read2 = fread($fp2, 8192)) !== false &&
|
|
$read1 === $read2 && !feof($fp1) && !feof($fp2))
|
|
{
|
|
// just loop until we find a difference
|
|
}
|
|
|
|
fclose($fp1);
|
|
fclose($fp2);
|
|
//error_log(__METHOD__."($file1, $file2) returning ".array2string($read1 === $read2)." (content differs)");
|
|
return $read1 === $read2;
|
|
}
|
|
|
|
/**
|
|
* Resolve the given path according to our fstab AND symlinks
|
|
*
|
|
* @param string $_path
|
|
* @param boolean $file_exists =true true if file needs to exists, false if not
|
|
* @param boolean $resolve_last_symlink =true
|
|
* @param array|boolean &$stat=null on return: stat of existing file or false for non-existing files
|
|
* @return string|boolean false if the url cant be resolved, should not happen if fstab has a root entry
|
|
*/
|
|
static function resolve_url_symlinks($_path,$file_exists=true,$resolve_last_symlink=true,&$stat=null)
|
|
{
|
|
$vfs = new Vfs\StreamWrapper();
|
|
return $vfs->resolve_url_symlinks($_path, $file_exists, $resolve_last_symlink, $stat);
|
|
}
|
|
|
|
/**
|
|
* Resolve the given path according to our fstab
|
|
*
|
|
* @param string $_path
|
|
* @param boolean $do_symlink =true is a direct match allowed, default yes (must be false for a lstat or readlink!)
|
|
* @param boolean $use_symlinkcache =true
|
|
* @param boolean $replace_user_pass_host =true replace $user,$pass,$host in url, default true, if false result is not cached
|
|
* @param boolean $fix_url_query =false true append relativ path to url query parameter, default not
|
|
* @return string|boolean false if the url cant be resolved, should not happen if fstab has a root entry
|
|
*/
|
|
static function resolve_url($_path,$do_symlink=true,$use_symlinkcache=true,$replace_user_pass_host=true,$fix_url_query=false)
|
|
{
|
|
return Vfs\StreamWrapper::resolve_url($_path, $do_symlink, $use_symlinkcache, $replace_user_pass_host, $fix_url_query);
|
|
}
|
|
|
|
/**
|
|
* This method is called in response to mkdir() calls on URL paths associated with the wrapper.
|
|
*
|
|
* It should attempt to create the directory specified by path.
|
|
* In order for the appropriate error message to be returned, do not define this method if your wrapper does not support creating directories.
|
|
*
|
|
* @param string $path
|
|
* @param int $mode =0750
|
|
* @param boolean $recursive =false true: create missing parents too
|
|
* @return boolean TRUE on success or FALSE on failure
|
|
*/
|
|
static function mkdir ($path, $mode=0750, $recursive=false)
|
|
{
|
|
return $path[0] == '/' && mkdir(self::PREFIX.$path, $mode, $recursive);
|
|
}
|
|
|
|
/**
|
|
* This method is called in response to rmdir() calls on URL paths associated with the wrapper.
|
|
*
|
|
* It should attempt to remove the directory specified by path.
|
|
* In order for the appropriate error message to be returned, do not define this method if your wrapper does not support removing directories.
|
|
*
|
|
* @param string $path
|
|
* @param int $options Possible values include STREAM_REPORT_ERRORS.
|
|
* @return boolean TRUE on success or FALSE on failure.
|
|
*/
|
|
static function rmdir($path)
|
|
{
|
|
return $path[0] == '/' && rmdir(self::PREFIX.$path);
|
|
}
|
|
|
|
/**
|
|
* This method is called in response to unlink() calls on URL paths associated with the wrapper.
|
|
*
|
|
* It should attempt to delete the item specified by path.
|
|
* In order for the appropriate error message to be returned, do not define this method if your wrapper does not support unlinking!
|
|
*
|
|
* @param string $path
|
|
* @return boolean TRUE on success or FALSE on failure
|
|
*/
|
|
static function unlink ( $path )
|
|
{
|
|
return $path[0] == '/' && unlink(self::PREFIX.$path);
|
|
}
|
|
|
|
/**
|
|
* Allow to call methods of the underlying stream wrapper: touch, chmod, chgrp, chown, ...
|
|
*
|
|
* We cant use a magic __call() method, as it does not work for static methods!
|
|
*
|
|
* @param string $name
|
|
* @param array $params first param has to be the path, otherwise we can not determine the correct wrapper
|
|
* @param boolean $fail_silent =false should only false be returned if function is not supported by the backend,
|
|
* or should an E_USER_WARNING error be triggered (default)
|
|
* @param int $path_param_key =0 key in params containing the path, default 0
|
|
* @return mixed return value of backend or false if function does not exist on backend
|
|
*/
|
|
static protected function _call_on_backend($name,$params,$fail_silent=false,$path_param_key=0)
|
|
{
|
|
$pathes = $params[$path_param_key];
|
|
|
|
$scheme2urls = array();
|
|
foreach(is_array($pathes) ? $pathes : array($pathes) as $path)
|
|
{
|
|
if (!($url = self::resolve_url_symlinks($path,false,false)))
|
|
{
|
|
return false;
|
|
}
|
|
$k=(string)self::parse_url($url,PHP_URL_SCHEME);
|
|
if (!(is_array($scheme2urls[$k]))) $scheme2urls[$k] = array();
|
|
$scheme2urls[$k][$path] = $url;
|
|
}
|
|
$ret = array();
|
|
foreach($scheme2urls as $scheme => $urls)
|
|
{
|
|
if ($scheme)
|
|
{
|
|
if (!class_exists($class = self::scheme2class($scheme)) || !method_exists($class,$name))
|
|
{
|
|
if (!$fail_silent) trigger_error("Can't $name for scheme $scheme!\n",E_USER_WARNING);
|
|
return false;
|
|
}
|
|
if (!is_array($pathes))
|
|
{
|
|
$params[$path_param_key] = $url;
|
|
|
|
return call_user_func_array(array($class,$name),$params);
|
|
}
|
|
$params[$path_param_key] = $urls;
|
|
if (!is_array($r = call_user_func_array(array($class,$name),$params)))
|
|
{
|
|
return $r;
|
|
}
|
|
// we need to re-translate the urls to pathes, as they can eg. contain symlinks
|
|
foreach($urls as $path => $url)
|
|
{
|
|
if (isset($r[$url]) || isset($r[$url=self::parse_url($url,PHP_URL_PATH)]))
|
|
{
|
|
$ret[$path] = $r[$url];
|
|
}
|
|
}
|
|
}
|
|
// call the filesystem specific function (dont allow to use arrays!)
|
|
elseif(!function_exists($name) || is_array($pathes))
|
|
{
|
|
return false;
|
|
}
|
|
else
|
|
{
|
|
$time = null;
|
|
return $name($url,$time);
|
|
}
|
|
}
|
|
return $ret;
|
|
}
|
|
|
|
/**
|
|
* touch just running on VFS path
|
|
*
|
|
* @param string $path
|
|
* @param int $time =null modification time (unix timestamp), default null = current time
|
|
* @param int $atime =null access time (unix timestamp), default null = current time, not implemented in the vfs!
|
|
* @return boolean true on success, false otherwise
|
|
*/
|
|
static function touch($path,$time=null,$atime=null)
|
|
{
|
|
return $path[0] == '/' && touch(self::PREFIX.$path, $time, $atime);
|
|
}
|
|
|
|
/**
|
|
* chmod just running on VFS path
|
|
*
|
|
* Requires owner or root rights!
|
|
*
|
|
* @param string $path
|
|
* @param string $mode mode string see Vfs::mode2int
|
|
* @return boolean true on success, false otherwise
|
|
*/
|
|
static function chmod($path,$mode)
|
|
{
|
|
return $path[0] == '/' && chmod(self::PREFIX.$path, $mode);
|
|
}
|
|
|
|
/**
|
|
* chmod just running on VFS path
|
|
*
|
|
* Requires root rights!
|
|
*
|
|
* @param string $path
|
|
* @param int|string $owner numeric user id or account-name
|
|
* @return boolean true on success, false otherwise
|
|
*/
|
|
static function chown($path,$owner)
|
|
{
|
|
return $path[0] == '/' && chown(self::PREFIX.$path, is_numeric($owner) ? abs($owner) : $owner);
|
|
}
|
|
|
|
/**
|
|
* chgrp just running on VFS path
|
|
*
|
|
* Requires owner or root rights!
|
|
*
|
|
* @param string $path
|
|
* @param int|string $group numeric group id or group-name
|
|
* @return boolean true on success, false otherwise
|
|
*/
|
|
static function chgrp($path,$group)
|
|
{
|
|
return $path[0] == '/' && chgrp(self::PREFIX.$path, is_numeric($group) ? abs($group) : $group);
|
|
}
|
|
|
|
/**
|
|
* Returns the target of a symbolic link
|
|
*
|
|
* This is not (yet) a stream-wrapper function, but it's necessary and can be used static
|
|
*
|
|
* @param string $path
|
|
* @return string|boolean link-data or false if no link
|
|
*/
|
|
static function readlink($path)
|
|
{
|
|
$ret = self::_call_on_backend('readlink',array($path),true); // true = fail silent, if backend does not support readlink
|
|
//error_log(__METHOD__."('$path') returning ".array2string($ret).' '.function_backtrace());
|
|
return $ret;
|
|
}
|
|
|
|
/**
|
|
* Creates a symbolic link
|
|
*
|
|
* This is not (yet) a stream-wrapper function, but it's necessary and can be used static
|
|
*
|
|
* @param string $target target of the link
|
|
* @param string $link path of the link to create
|
|
* @return boolean true on success, false on error
|
|
*/
|
|
static function symlink($target,$link)
|
|
{
|
|
if (($ret = self::_call_on_backend('symlink',array($target,$link),false,1))) // 1=path is in $link!
|
|
{
|
|
Vfs\StreamWrapper::symlinkCache_remove($link);
|
|
}
|
|
return $ret;
|
|
}
|
|
|
|
/**
|
|
* This is not (yet) a stream-wrapper function, but it's necessary and can be used static
|
|
*
|
|
* The methods use the following ways to get the mime type (in that order)
|
|
* - directories (is_dir()) --> self::DIR_MIME_TYPE
|
|
* - stream implemented by class defining the STAT_RETURN_MIME_TYPE constant --> use mime-type returned by url_stat
|
|
* - for regular filesystem use mime_content_type function if available
|
|
* - use eGW's mime-magic class
|
|
*
|
|
* @param string $path
|
|
* @param boolean $recheck =false true = do a new check, false = rely on stored mime type (if existing)
|
|
* @return string mime-type (self::DIR_MIME_TYPE for directories)
|
|
*/
|
|
static function mime_content_type($path,$recheck=false)
|
|
{
|
|
if (!($url = self::resolve_url_symlinks($path)))
|
|
{
|
|
return false;
|
|
}
|
|
if (($scheme = self::parse_url($url,PHP_URL_SCHEME)) && !$recheck)
|
|
{
|
|
// check it it's an eGW stream wrapper returning mime-type via url_stat
|
|
// we need to first check if the constant is defined, as we get a fatal error in php5.3 otherwise
|
|
if (class_exists($class = self::scheme2class($scheme)) &&
|
|
defined($class.'::STAT_RETURN_MIME_TYPE') &&
|
|
($mime_attr = constant($class.'::STAT_RETURN_MIME_TYPE')))
|
|
{
|
|
$inst = new $class;
|
|
$stat = $inst->url_stat(self::parse_url($url,PHP_URL_PATH),0);
|
|
if ($stat && $stat[$mime_attr])
|
|
{
|
|
$mime = $stat[$mime_attr];
|
|
}
|
|
}
|
|
}
|
|
if (!$mime && is_dir($url))
|
|
{
|
|
$mime = self::DIR_MIME_TYPE;
|
|
}
|
|
// if we operate on the regular filesystem and the mime_content_type function is available --> use it
|
|
if (!$mime && !$scheme && function_exists('mime_content_type'))
|
|
{
|
|
$mime = mime_content_type($path);
|
|
}
|
|
// using EGw's own mime magic (currently only checking the extension!)
|
|
if (!$mime)
|
|
{
|
|
$mime = MimeMagic::filename2mime(self::parse_url($url,PHP_URL_PATH));
|
|
}
|
|
//error_log(__METHOD__."($path,$recheck) mime=$mime");
|
|
return $mime;
|
|
}
|
|
|
|
/**
|
|
* Get the class-name for a scheme
|
|
*
|
|
* A scheme is not allowed to contain an underscore, but allows a dot and a class names only allow or need underscores, but no dots
|
|
* --> we replace dots in scheme with underscored to get the class-name
|
|
*
|
|
* @param string $scheme eg. vfs
|
|
* @return string
|
|
*/
|
|
static function scheme2class($scheme)
|
|
{
|
|
return Vfs\StreamWrapper::scheme2class($scheme);
|
|
}
|
|
|
|
/**
|
|
* Clears our internal stat and symlink cache
|
|
*
|
|
* Normaly not necessary, as it is automatically cleared/updated, UNLESS Vfs::$user changes!
|
|
*
|
|
* We have to clear the symlink cache before AND after calling the backend,
|
|
* because auf traversal rights may be different when Vfs::$user changes!
|
|
*
|
|
* @param string $path ='/' path of backend, whos cache to clear
|
|
*/
|
|
static function clearstatcache($path='/')
|
|
{
|
|
//error_log(__METHOD__."('$path')");
|
|
Vfs\StreamWrapper::clearstatcache($path);
|
|
self::_call_on_backend('clearstatcache', array($path), true, 0);
|
|
Vfs\StreamWrapper::clearstatcache($path);
|
|
}
|
|
|
|
/**
|
|
* This method is called in response to rename() calls on URL paths associated with the wrapper.
|
|
*
|
|
* It should attempt to rename the item specified by path_from to the specification given by path_to.
|
|
* In order for the appropriate error message to be returned, do not define this method if your wrapper does not support renaming.
|
|
*
|
|
* The regular filesystem stream-wrapper returns an error, if $url_from and $url_to are not either both files or both dirs!
|
|
*
|
|
* @param string $path_from
|
|
* @param string $path_to
|
|
* @return boolean TRUE on success or FALSE on failure
|
|
*/
|
|
static function rename ( $path_from, $path_to )
|
|
{
|
|
$vfs = new Vfs\StreamWrapper();
|
|
return $vfs->rename($path_from, $path_to);
|
|
}
|
|
|
|
/**
|
|
* Load stream wrapper for a given schema
|
|
*
|
|
* @param string $scheme
|
|
* @return boolean
|
|
*/
|
|
static function load_wrapper($scheme)
|
|
{
|
|
return Vfs\StreamWrapper::load_wrapper($scheme);
|
|
}
|
|
|
|
/**
|
|
* Return stream with given string as content
|
|
*
|
|
* @param string $string
|
|
* @return boolean|resource stream or false on error
|
|
*/
|
|
static function string_stream($string)
|
|
{
|
|
if (!($fp = fopen('php://temp', 'rw')))
|
|
{
|
|
return false;
|
|
}
|
|
$pos = 0;
|
|
$len = strlen($string);
|
|
do {
|
|
if (!($written = fwrite($fp, substr($string, $pos))))
|
|
{
|
|
return false;
|
|
}
|
|
$pos += $written;
|
|
}
|
|
while ($len < $pos);
|
|
|
|
rewind($fp);
|
|
|
|
return $fp;
|
|
}
|
|
|
|
/**
|
|
* Get the lowest fs_id for a given path
|
|
*
|
|
* @param string $path
|
|
*
|
|
* @return integer|boolean Lowest fs_id for that path, or false
|
|
*/
|
|
static function get_minimum_file_id($path)
|
|
{
|
|
if(!self::file_exists($path))
|
|
{
|
|
return false;
|
|
}
|
|
return self::_call_on_backend('get_minimum_file_id', array($path));
|
|
}
|
|
}
|
|
|
|
Vfs::init_static();
|