<?php
/**
* eGroupWare API: VFS - old (until eGW 1.4 inclusive) VFS stream wrapper
*
* @link http://www.egroupware.org
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
* @package api
* @subpackage vfs
* @author Ralf Becker <RalfBecker-AT-outdoor-training.de>
* @copyright (c) 2007-8 by Ralf Becker <RalfBecker-AT-outdoor-training.de>
* @version $Id$
*/
require_once(EGW_API_INC.'/class.vfs_home.inc.php');
require_once(EGW_API_INC.'/class.iface_stream_wrapper.inc.php');
/**
* eGroupWare API: VFS - old (until eGW 1.4 inclusive) VFS stream wrapper
*
* This class uses eGW's vfs_home class to access the vfs.
*
* The interface is according to the docu on php.net
*
* @link http://de.php.net/manual/de/function.stream-wrapper-register.php
*/
class oldvfs_stream_wrapper implements iface_stream_wrapper
{
/**
* If this class should do the operations direct in the filesystem, instead of going through the vfs
*
*/
const USE_FILESYSTEM_DIRECT = true;
/**
* Mime type of directories, the old vfs uses 'Directory', while eg. WebDAV uses 'httpd/unix-directory'
*
*/
const DIR_MIME_TYPE = 'Directory';
/**
* How much should be logged to the apache error-log
*
* 0 = Nothing
* 1 = only errors
* 2 = all function calls and errors (contains passwords too!)
*/
const LOG_LEVEL = 1;
/**
* optional context param when opening the stream, null if no context passed
*
* @var mixed
*/
var $context;
/**
* Instance of the old vfs class
*
* @var vfs_home
*/
static protected $old_vfs;
/**
* Path off the file opened by stream_open
*
* @var string
*/
protected $opened_path;
/**
* Mode of the file opened by stream_open
*
* @var int
*/
protected $opened_mode;
/**
* Content of the opened file, as the old vfs can only read/write the whole file
*
* @var string
*/
protected $opened_data;
/**
* Position in the opened file
*
* @var int
*/
protected $opened_pos;
/**
* Directory vfs::ls() of dir opened with dir_opendir()
*
* This static var gets overwritten by each new dir_opendir, it helps to not read the entries twice.
*
* @var array $path => info-array pairs
*/
static private $stat_cache;
/**
* Array with filenames of dir opened with dir_opendir
*
* @var array
*/
protected $opened_dir;
/**
* Constructor, only called for the non-static stream_* methods!
*
* @return oldvfs_stream_wrapper
*/
function __construct()
{
if (self::LOG_LEVEL > 1) error_log('oldvfs_stream_wrapper::__construct()');
if (!is_object(self::$old_vfs))
{
self::$old_vfs =& new vfs_home();
}
}
/**
* This method is called immediately after your stream object is created.
*
* @param string $url URL that was passed to fopen() and that this object is expected to retrieve
* @param string $mode mode used to open the file, as detailed for fopen()
* @param int $options additional flags set by the streams API (or'ed together):
* - STREAM_USE_PATH If path is relative, search for the resource using the include_path.
* - STREAM_REPORT_ERRORS If this flag is set, you are responsible for raising errors using trigger_error() during opening of the stream.
* If this flag is not set, you should not raise any errors.
* @param string $opened_path full path of the file/resource, if the open was successfull and STREAM_USE_PATH was set
* @return boolean true if the ressource was opened successful, otherwise false
*/
function stream_open ( $url, $mode, $options, &$opened_path )
{
if (self::LOG_LEVEL > 1) error_log(__METHOD__."($url,$mode,$options)");
$path = parse_url($url,PHP_URL_PATH);
$this->opened_path = $path;
$this->opened_mode = $mode;
$this->opened_data = null;
if (!self::$old_vfs->file_exists($data = array( // file does not exists
'string' => $path,
'relatives' => array(RELATIVE_ROOT),
)) || $mode[0] == 'x') // or file should NOT exist
{
if ($mode[0] == 'r' || // does $mode require the file to exist (r,r+)
$mode[0] == 'x' || // or file should not exist, but does
!self::$old_vfs->acl_check($data+array( // or we are not allowed to create it
'operation' => EGW_ACL_ADD,
)))
{
self::remove_password($url);
if (self::LOG_LEVEL) error_log(__METHOD__."($url,$mode,$options) file does not exist or can not be created!");
if (!($options & STREAM_URL_STAT_QUIET))
{
trigger_error(__METHOD__."($url,$mode,$options) file does not exist or can not be created!",E_USER_WARNING);
}
$this->opened_data = $this->opened_path = $this->opened_mode = null;
return false;
}
// new file
$this->opened_data = '';
$this->opened_pos = 0;
}
else
{
if ($mode != 'r' && !self::$old_vfs->acl_check($data+array( // we are not allowed to edit it
'operation' => EGW_ACL_EDIT,
)))
{
self::remove_password($url);
if (self::LOG_LEVEL) error_log(__METHOD__."($url,$mode,$options) file can not be edited!");
if (!($options & STREAM_URL_STAT_QUIET))
{
trigger_error(__METHOD__."($url,$mode,$options) file can not be edited!",E_USER_WARNING);
}
$this->opened_data = $this->opened_path = $this->opened_mode = null;
return false;
}
if ($mode[0] == 'w') // w or w+ truncates the file to 0 size
{
$this->opened_data = '';
$this->opened_pos = 0;
}
}
// can we operate directly on a filesystem stream?
if (self::$old_vfs->file_actions && self::USE_FILESYSTEM_DIRECT)
{
$p = self::$old_vfs->path_parts($data);
if (!($this->opened_data = fopen($p->real_full_path,$mode,false)))
{
if (self::LOG_LEVEL) error_log(__METHOD__."($url,$mode,$options) file $p->real_full_path can not be opened!");
return false;
}
}
if ($mode[0] == 'a') // append modes: a, a+
{
$this->stream_seek(0,SEEK_END);
}
return true;
}
/**
* This method is called when the stream is closed, using fclose().
*
* You must release any resources that were locked or allocated by the stream.
*/
function stream_close ( )
{
if (self::LOG_LEVEL > 1) error_log(__METHOD__."()");
if (is_null($this->opened_path)) return false;
$ret = true;
if (is_resource($this->opened_data))
{
$ret = fclose($this->opened_data);
if ($this->opened_mode != 'r')
{
// touch creates file (if necessary) and sets the modification or creation time and owner
self::$old_vfs->touch($data = array(
'string' => $this->opened_path,
'relatives' => array(RELATIVE_ROOT), // filename is relative to the vfs-root
));
// we read the size from the filesystem and write it to our db-based metadata
$p = self::$old_vfs->path_parts($data);
$data['attributes'] = array(
'size' => filesize($p->real_full_path),
);
self::$old_vfs->set_attributes($data);
}
}
elseif ($this->opened_mode != 'r')
{
// store the changes
self::$old_vfs->write($this->opened_data);
}
$this->opened_data = $this->opened_path = $this->opened_mode = null;
return $ret;
}
/**
* This method is called in response to fread() and fgets() calls on the stream.
*
* You must return up-to count bytes of data from the current read/write position as a string.
* If there are less than count bytes available, return as many as are available.
* If no more data is available, return either FALSE or an empty string.
* You must also update the read/write position of the stream by the number of bytes that were successfully read.
*
* @param int $count
* @return string/false up to count bytes read or false on EOF
*/
function stream_read ( $count )
{
if (self::LOG_LEVEL > 1) error_log(__METHOD__."($count) pos=$this->opened_pos");
if (is_resource($this->opened_data))
{
return fread($this->opened_data,$count);
}
if (is_null($this->opened_data))
{
if (($this->opened_data = self::$old_vfs->read(array(
'string' => $this->opened_path,
'relatives' => array(RELATIVE_ROOT), // filename is relative to the vfs-root
))) === false)
{
return false;
}
$this->opened_pos = 0;
}
if ($this->stream_eof()) return false; // nothing more to read
$start = $this->opened_pos;
$this->opened_pos += $count;
// multibyte save substr!
return self::substr($this->opened_data,$start,$count);
}
/**
* This method is called in response to fwrite() calls on the stream.
*
* You should store data into the underlying storage used by your stream.
* If there is not enough room, try to store as many bytes as possible.
* You should return the number of bytes that were successfully stored in the stream, or 0 if none could be stored.
* You must also update the read/write position of the stream by the number of bytes that were successfully written.
*
* @param string $data
* @return integer
*/
function stream_write ( $data )
{
if (self::LOG_LEVEL > 1) error_log(__METHOD__."($data)");
if (is_resource($this->opened_data))
{
return fwrite($this->opened_data,$data);
}
$len = bytes($data);
// multibyte save substr!
self::substr($this->opened_data,$this->opened_pos);
$this->opened_pos += $len;
return $len;
}
/**
* This method is called in response to feof() calls on the stream.
*
* Important: PHP 5.0 introduced a bug that wasn't fixed until 5.1: the return value has to be the oposite!
*
* if(version_compare(PHP_VERSION,'5.0','>=') && version_compare(PHP_VERSION,'5.1','<'))
* {
* $eof = !$eof;
* }
*
* @return boolean true if the read/write position is at the end of the stream and no more data availible, false otherwise
*/
function stream_eof ( )
{
if (is_resource($this->opened_data))
{
return feof($this->opened_data);
}
if (!is_null($this->opened_data))
{
$len = bytes($this->opened_data);
$eof = $this->opened_pos >= $len;
}
if (self::LOG_LEVEL > 1)
{
error_log(__METHOD__."() pos=$this->opened_pos >= $len=len --> ".($eof ? 'true' : 'false'));
}
return $eof;
}
/**
* This method is called in response to ftell() calls on the stream.
*
* @return integer current read/write position of the stream
*/
function stream_tell ( )
{
if (self::LOG_LEVEL > 1) error_log(__METHOD__."()");
if (is_resource($this->opened_data))
{
return ftell($this->opened_data);
}
return $this->opened_pos;
}
/**
* This method is called in response to fseek() calls on the stream.
*
* You should update the read/write position of the stream according to offset and whence.
* See fseek() for more information about these parameters.
*
* @param integer $offset
* @param integer $whence SEEK_SET - Set position equal to offset bytes
* SEEK_CUR - Set position to current location plus offset.
* SEEK_END - Set position to end-of-file plus offset. (To move to a position before the end-of-file, you need to pass a negative value in offset.)
* @return boolean TRUE if the position was updated, FALSE otherwise.
*/
function stream_seek ( $offset, $whence )
{
if (self::LOG_LEVEL > 1) error_log(__METHOD__."($offset,$whence)");
if (is_resource($this->opened_data))
{
return fseek($this->opened_data,$offset,$whence);
}
if (is_null($this->opened_path)) return false;
switch($whence)
{
default:
case SEEK_SET:
$this->opened_pos = $offset;
break;
case SEEK_END:
$this->opened_pos = bytes($this->opened_data);
// fall through
case SEEK_CUR:
$this->opened_pos += $offset;
break;
}
return true;
}
/**
* This method is called in response to fflush() calls on the stream.
*
* If you have cached data in your stream but not yet stored it into the underlying storage, you should do so now.
*
* @return booelan TRUE if the cached data was successfully stored (or if there was no data to store), or FALSE if the data could not be stored.
*/
function stream_flush ( )
{
if (self::LOG_LEVEL > 1) error_log(__METHOD__."()");
if (is_resource($this->opened_data))
{
return fflush($this->opened_data);
}
// we cant flush, as the old vfs can only write the whole data as once
return true;
}
/**
* This method is called in response to fstat() calls on the stream.
*
* If you plan to use your wrapper in a require_once you need to define stream_stat().
* If you plan to allow any other tests like is_file()/is_dir(), you have to define url_stat().
* stream_stat() must define the size of the file, or it will never be included.
* url_stat() must define mode, or is_file()/is_dir()/is_executable(), and any of those functions affected by clearstatcache() simply won't work.
* It's not documented, but directories must be a mode like 040777 (octal), and files a mode like 0100666.
* If you wish the file to be executable, use 7s instead of 6s.
* The last 3 digits are exactly the same thing as what you pass to chmod.
* 040000 defines a directory, and 0100000 defines a file.
*
* @return array containing the same values as appropriate for the stream.
*/
function stream_stat ( )
{
if (self::LOG_LEVEL > 1) error_log(__METHOD__."($this->opened_path)");
return $this->url_stat($this->opened_path,0);
}
/**
* 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 $url
* @return boolean TRUE on success or FALSE on failure
*/
static function unlink ( $url )
{
if (self::LOG_LEVEL > 1) error_log(__METHOD__."($url)");
$path = parse_url($url,PHP_URL_PATH);
if (!is_object(self::$old_vfs))
{
self::$old_vfs =& new vfs_home();
}
$data=array(
'string' => $path,
'relatives' => array(RELATIVE_ROOT), // filename is relative to the vfs-root
);
if (!self::$old_vfs->acl_check($data+array(
'operation' => EGW_ACL_DELETE,
'must_exist' => true,
)) || ($type = self::$old_vfs->file_type($data)) === self::DIR_MIME_TYPE)
{
self::remove_password($url);
if (self::LOG_LEVEL) error_log(__METHOD__."($url) (type=$type) permission denied!");
return false; // no permission or file does not exist
}
unset(self::$stat_cache[$path]);
return self::$old_vfs->rm($data);
}
/**
* 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 $url_from
* @param string $url_to
* @return boolean TRUE on success or FALSE on failure
*/
static function rename ( $url_from, $url_to )
{
if (self::LOG_LEVEL > 1) error_log(__METHOD__."($url_from,$url_to)");
$path_from = parse_url($url_from,PHP_URL_PATH);
$path_to = parse_url($url_to,PHP_URL_PATH);
if (!is_object(self::$old_vfs))
{
self::$old_vfs =& new vfs_home();
}
$data_from = array(
'string' => $path_from,
'relatives' => array(RELATIVE_ROOT), // filename is relative to the vfs-root
);
if (!self::$old_vfs->acl_check($data_from+array(
'operation' => EGW_ACL_DELETE,
'must_exist'=> true,
)))
{
if (self::LOG_LEVEL) error_log(__METHOD__."($url_from,$url_to): $path_from permission denied!");
return false; // no permission or file does not exist
}
$data_to = array(
'string' => $path_to,
'relatives' => array(RELATIVE_ROOT), // filename is relative to the vfs-root
);
if (!self::$old_vfs->acl_check($data_to+array(
'operation' => EGW_ACL_ADD,
)))
{
self::remove_password($url_from);
self::remove_password($url_to);
if (self::LOG_LEVEL) error_log(__METHOD__."($url_from,$url_to): $path_to permission denied!");
return false; // no permission or file does not exist
}
// the filesystem stream-wrapper does NOT allow to rename files to directories, as this makes problems
// for our vfs too, we give abort here with an error, like the filesystem one does
if (($type_to = self::$old_vfs->file_type($data_to)) &&
($type_to === self::DIR_MIME_TYPE) !== (self::$old_vfs->file_type($data_from) === self::DIR_MIME_TYPE))
{
$is_dir = $type_to === self::DIR_MIME_TYPE ? 'a' : 'no';
self::remove_password($url_from);
self::remove_password($url_to);
if (self::LOG_LEVEL) error_log(__METHOD__."($url_to,$url_from) $path_to is $is_dir directory!");
return false; // no permission or file does not exist
}
unset(self::$stat_cache[$path_from]);
return self::$old_vfs->mv(array(
'from' => $path_from,
'to' => $path_to,
'relatives' => array(RELATIVE_ROOT,RELATIVE_ROOT),
));
}
/**
* 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 $url
* @param int $mode
* @param int $options Posible values include STREAM_REPORT_ERRORS and STREAM_MKDIR_RECURSIVE
* @return boolean TRUE on success or FALSE on failure
*/
static function mkdir ( $url, $mode, $options )
{
if (self::LOG_LEVEL > 1) error_log(__METHOD__."($url,$mode,$options)");
$path = parse_url($url,PHP_URL_PATH);
if (!is_object(self::$old_vfs))
{
self::$old_vfs =& new vfs_home();
}
// check if we should also create all non-existing path components and our parent does not exist,
// if yes call ourself recursive with the parent directory
if (($options & STREAM_MKDIR_RECURSIVE) && $path != '/' && !self::$old_vfs->file_exists(array(
'string' => dirname($path),
'relatives' => array(RELATIVE_ROOT), // filename is relative to the vfs-root
)))
{
if (!self::mkdir(dirname($path),$mode,$options))
{
return false;
}
}
$data=array(
'string' => $path,
'relatives' => array(RELATIVE_ROOT), // filename is relative to the vfs-root
);
if (!self::$old_vfs->acl_check($data+array(
'operation' => EGW_ACL_ADD,
'must_exist' => false,
)))
{
self::remove_password($url);
if (self::LOG_LEVEL) error_log(__METHOD__."($url) permission denied!");
if (!($options & STREAM_URL_STAT_QUIET))
{
trigger_error(__METHOD__."('$url',$mode,$options) permission denied!",E_USER_WARNING);
}
return false; // no permission or file does not exist
}
return self::$old_vfs->mkdir($data);
}
/**
* 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 $url
* @param int $options Possible values include STREAM_REPORT_ERRORS.
* @return boolean TRUE on success or FALSE on failure.
*/
static function rmdir ( $url, $options )
{
if (self::LOG_LEVEL > 1) error_log(__METHOD__."($url)");
$path = parse_url($url,PHP_URL_PATH);
if (!is_object(self::$old_vfs))
{
self::$old_vfs =& new vfs_home();
}
$data=array(
'string' => $path,
'relatives' => array(RELATIVE_ROOT), // filename is relative to the vfs-root
);
if (!self::$old_vfs->acl_check($data+array(
'operation' => EGW_ACL_DELETE,
'must_exist' => true,
)) || ($type = self::$old_vfs->file_type($data)) !== self::DIR_MIME_TYPE)
{
self::remove_password($url);
if (self::LOG_LEVEL) error_log(__METHOD__."($url,$options) (type=$type) permission denied!");
if (!($options & STREAM_URL_STAT_QUIET))
{
trigger_error(__METHOD__."('$url',$options) (type=$type) permission denied!",E_USER_WARNING);
}
return false; // no permission or file does not exist
}
// abort with an error, if the dir is not empty
// our vfs deletes recursive, while the stream-wrapper interface does not!
if (($files = self::$old_vfs->ls($data)))
{
self::remove_password($url);
if (self::LOG_LEVEL) error_log(__METHOD__."($url,$options) dir is not empty!");
if (!($options & STREAM_URL_STAT_QUIET))
{
trigger_error(__METHOD__."('$url',$options) dir is not empty!",E_USER_WARNING);
}
return false;
}
unset(self::$stat_cache[$path]);
return self::$old_vfs->rm($data);
}
/**
* This is not (yet) a stream-wrapper function, but it's necessary and can be used static
*
* @param string $url
* @param int $time=null modification time (unix timestamp), default null = current time
* @param int $atime=null access time (unix timestamp), default null = current time, not implemented in the vfs!
*/
static function touch($url,$time=null,$atime=null)
{
if (self::LOG_LEVEL > 1) error_log(__METHOD__."($url)");
$path = parse_url($url,PHP_URL_PATH);
if (!is_object(self::$old_vfs))
{
self::$old_vfs =& new vfs_home();
}
$data=array(
'string' => $path,
'relatives' => array(RELATIVE_ROOT), // filename is relative to the vfs-root
);
if (!is_null($time)) $data['time'] = $time;
return self::$old_vfs->touch($data);
}
/**
* This method is called immediately when your stream object is created for examining directory contents with opendir().
*
* @param string $path URL that was passed to opendir() and that this object is expected to explore.
* @param $options
* @return booelan
*/
function dir_opendir ( $url, $options )
{
if (self::LOG_LEVEL > 1) error_log(__METHOD__."('$url',$options)");
$this->opened_dir = null;
if (!is_object(self::$old_vfs))
{
self::$old_vfs =& new vfs_home();
}
$path = parse_url($url,PHP_URL_PATH);
$files = self::$old_vfs->ls(array(
'string' => $path,
'relatives' => array(RELATIVE_ROOT), // filename is relative to the vfs-root
'checksubdirs' => false,
'nofiles' => false,
'orderby' => 'name',
//'mime_type' => '',
));
if (!is_array($files) ||
// we also need to return false, if $url is not a directory!
count($files) == 1 && $path == $files[0]['directory'].'/'.$files[0]['name'] &&
$files[0]['mime_type'] != self::DIR_MIME_TYPE)
{
self::remove_password($url);
if (self::LOG_LEVEL) error_log(__METHOD__."('$url',$options) $url is not directory!");
$this->opened_dir = null;
return false;
}
self::$stat_cache = $this->opened_dir = array();
foreach($files as $file)
{
$this->opened_dir[] = $file['name'];
self::$stat_cache[$file['directory'].'/'.$file['name']] = $file;
}
//print_r($this->opened_dir);
reset($this->opened_dir);
return true;
}
/**
* This method is called in response to stat() calls on the URL paths associated with the wrapper.
*
* It should return as many elements in common with the system function as possible.
* Unknown or unavailable values should be set to a rational value (usually 0).
*
* If you plan to use your wrapper in a require_once you need to define stream_stat().
* If you plan to allow any other tests like is_file()/is_dir(), you have to define url_stat().
* stream_stat() must define the size of the file, or it will never be included.
* url_stat() must define mode, or is_file()/is_dir()/is_executable(), and any of those functions affected by clearstatcache() simply won't work.
* It's not documented, but directories must be a mode like 040777 (octal), and files a mode like 0100666.
* If you wish the file to be executable, use 7s instead of 6s.
* The last 3 digits are exactly the same thing as what you pass to chmod.
* 040000 defines a directory, and 0100000 defines a file.
*
* @param string $path
* @param int $flags holds additional flags set by the streams API. It can hold one or more of the following values OR'd together:
* - STREAM_URL_STAT_LINK For resources with the ability to link to other resource (such as an HTTP Location: forward,
* or a filesystem symlink). This flag specified that only information about the link itself should be returned,
* not the resource pointed to by the link.
* This flag is set in response to calls to lstat(), is_link(), or filetype().
* - STREAM_URL_STAT_QUIET If this flag is set, your wrapper should not raise any errors. If this flag is not set,
* you are responsible for reporting errors using the trigger_error() function during stating of the path.
* stat triggers it's own warning anyway, so it makes no sense to trigger one by our stream-wrapper!
* @return array
*/
static function url_stat ( $url, $flags )
{
if (self::LOG_LEVEL > 1) error_log(__METHOD__."('$url',$flags)");
$path = parse_url($url,PHP_URL_PATH);
// check if we already have the info from the last dir_open call, as the old vfs reads it anyway from the db
if (self::$stat_cache && isset(self::$stat_cache[$path]))
{
return self::_vfsinfo2stat(self::$stat_cache[$path]);
}
if (!is_object(self::$old_vfs))
{
self::$old_vfs =& new vfs_home();
}
list($info) = self::$old_vfs->ls(array(
'string' => $path,
'relatives' => array(RELATIVE_ROOT), // filename is relative to the vfs-root
'checksubdirs' => false,
'nofiles' => true,
//'orderby' => 'name',
//'mime_type' => '',
));
//print_r($info);
if (!$info)
{
self::remove_password($url);
if (self::LOG_LEVEL) error_log(__METHOD__."('$url',$flags) file or directory not found!");
return false;
}
return self::_vfsinfo2stat($info);
}
/**
* This method is called in response to readdir().
*
* It should return a string representing the next filename in the location opened by dir_opendir().
*
* @return string
*/
function dir_readdir ( )
{
if (self::LOG_LEVEL > 1) error_log(__METHOD__."( )");
if (!is_array($this->opened_dir)) return false;
$file = current($this->opened_dir); next($this->opened_dir);
return $file ? $file : false;
}
/**
* This method is called in response to rewinddir().
*
* It should reset the output generated by dir_readdir(). i.e.:
* The next call to dir_readdir() should return the first entry in the location returned by dir_opendir().
*
* @return boolean
*/
function dir_rewinddir ( )
{
if (self::LOG_LEVEL > 1) error_log(__METHOD__."( )");
if (!is_array($this->opened_dir)) return false;
reset($this->opened_dir);
return true;
}
/**
* This method is called in response to closedir().
*
* You should release any resources which were locked or allocated during the opening and use of the directory stream.
*
* @return boolean
*/
function dir_closedir ( )
{
if (self::LOG_LEVEL > 1) error_log(__METHOD__."( )");
if (!is_array($this->opened_dir)) return false;
$this->opened_dir = null;
return true;
}
/**
* Convert a vfs-file-info into a stat array
*
* @param array $info
* @return array
*/
static private function _vfsinfo2stat($info)
{
$stat = array(
'ino' => $info['file_id'],
'name' => $info['name'],
'mode' => $info['owner_id'] > 0 ?
($info['mime_type'] == self::DIR_MIME_TYPE ? 040700 : 0100600) :
($info['mime_type'] == self::DIR_MIME_TYPE ? 040070 : 0100060),
'size' => $info['size'],
'uid' => $info['owner_id'] > 0 ? $info['owner_id'] : 0,
'gid' => $info['owner_id'] < 0 ? $info['owner_id'] : 0,
'mtime' => strtotime($info['modified'] ? $info['modified'] : $info['created']),
'ctime' => strtotime($info['created']),
'nlink' => $info['mime_type'] == self::DIR_MIME_TYPE ? 2 : 1,
);
//print_r($stat);
return $stat;
}
/**
* Multibyte save substr
*
* @param string $str
* @param int $start
* @param int $length=null
* @return string
*/
static function substr($str,$start,$length=null)
{
static $func_overload;
if (is_null($func_overload)) $func_overload = extension_loaded('mbstring') ? ini_get('mbstring.func_overload') : 0;
return $func_overload & 2 ? mb_substr($str,$start,$length,'ascii') : substr($str,$start,$length);
}
/**
* Replace the password of an url with '...' for error messages
*
* @param string &$url
*/
static private function remove_password(&$url)
{
$parts = parse_url($url);
if ($parts['pass'] || $parts['scheme'])
{
$url = $parts['scheme'].'://'.($parts['user'] ? $parts['user'].($parts['pass']?':...':'').'@' : '').
$parts['host'].$parts['path'];
}
}
}
stream_register_wrapper('oldvfs','oldvfs_stream_wrapper');