mirror of
https://github.com/EGroupware/egroupware.git
synced 2024-12-30 18:49:08 +01:00
808 lines
24 KiB
PHP
808 lines
24 KiB
PHP
<?php
|
|
/**
|
|
* eGroupWare API: VFS - static methods to use the new eGW virtual file system
|
|
*
|
|
* @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) 2008 by Ralf Becker <RalfBecker-AT-outdoor-training.de>
|
|
* @version $Id$
|
|
*/
|
|
|
|
/**
|
|
* Class containing static methods to use the new eGW virtual file system
|
|
*
|
|
* This extension of the vfs stream-wrapper allows to use the following static functions,
|
|
* which only allow access to the eGW VFS and need no 'vfs://default' prefix for filenames:
|
|
*
|
|
* - resource egw_vfs::fopen($path,$mode) like fopen, returned resource can be used with fwrite etc.
|
|
* - resource egw_vfs::opendir($path) like opendir, returned resource can be used with readdir etc.
|
|
* - boolean egw_vfs::copy($from,$to) like copy
|
|
* - boolean egw_vfs::rename($old,$new) renaming or moving a file in the vfs
|
|
* - boolean egw_vfs::mkdir($path) creating a new dir in the vfs
|
|
* - boolean egw_vfs::rmdir($path) removing (an empty) directory
|
|
* - boolean egw_vfs::unlink($path) removing a file
|
|
* - boolean egw_vfs::touch($path,$mtime=null) touch a file
|
|
* - boolean egw_vfs::stat($path) returning status of file like stat(), but only with string keys (no numerical indexes)!
|
|
*
|
|
* With the exception of egw_vfs::touch() (not yet part of the stream_wrapper interface)
|
|
* you can always use the standard php functions, if you add a 'vfs://default' prefix
|
|
* to every filename or path. Be sure to always add the prefix, as the user otherwise gains
|
|
* access to the real filesystem of the server!
|
|
*
|
|
* The two following methods can be used to persitently mount further filesystems (without editing the code):
|
|
*
|
|
* - boolean/array egw_vfs::mount($url,$path) to mount $ur on $path or to return the fstab when called without argument
|
|
* - boolean egw_vfs::umount($path) to unmount a path or url
|
|
*
|
|
* The stream wrapper interface allows to access hugh files in junks to not be limited by the
|
|
* memory_limit setting of php. To do you should path a resource to the opened file and not the content:
|
|
*
|
|
* $file = egw_vfs::fopen('/home/user/somefile','r');
|
|
* $content = fread($file,1024);
|
|
*
|
|
* You can also attach stream filters, to eg. base64 encode or compress it on the fly,
|
|
* without the need to hold the content of the whole file in memmory.
|
|
*
|
|
* If you want to copy a file, you can use stream_copy_to_stream to do a copy of a file far bigger then
|
|
* php's memory_limit:
|
|
*
|
|
* $from = egw_vfs::fopen('/home/user/fromfile','r');
|
|
* $to = egw_vfs::fopen('/home/user/tofile','w');
|
|
*
|
|
* stream_copy_to_stream($from,$to);
|
|
*
|
|
* The static egw_vfs::copy() method does exactly that, but you have to do it eg. on your own, if
|
|
* you want to copy eg. an uploaded file into the vfs.
|
|
*/
|
|
class egw_vfs extends vfs_stream_wrapper
|
|
{
|
|
const PREFIX = 'vfs://default';
|
|
/**
|
|
* Readable bit, for dirs traversable
|
|
*/
|
|
const READABLE = 4;
|
|
/**
|
|
* Writable bit, for dirs delete or create files in that dir
|
|
*/
|
|
const WRITABLE = 2;
|
|
/**
|
|
* Excecutable bit, here only use to check if user is allowed to search dirs
|
|
*/
|
|
const EXECUTABLE = 1;
|
|
/**
|
|
* Current user has root rights, no access checks performed!
|
|
*
|
|
* @var boolean
|
|
*/
|
|
static $is_root = false;
|
|
/**
|
|
* Current user id, in case we ever change if away from $GLOBALS['egw_info']['user']['account_id']
|
|
*
|
|
* @var int
|
|
*/
|
|
static $user;
|
|
/**
|
|
* Total of last find call
|
|
*
|
|
* @var int
|
|
*/
|
|
static $find_total;
|
|
|
|
/**
|
|
* fopen working on just the eGW VFS
|
|
*
|
|
* @param string $path filename with absolute path in the eGW VFS
|
|
* @param string $mode 'r', 'w', ... like fopen
|
|
* @return resource
|
|
*/
|
|
static function fopen($path,$mode)
|
|
{
|
|
if ($path[0] != '/')
|
|
{
|
|
throw new egw_exception_assertion_failed("Filename '$path' is not an absolute path!");
|
|
}
|
|
return fopen(self::SCHEME.'://default'.$path,$mode);
|
|
}
|
|
|
|
/**
|
|
* opendir working on just the eGW VFS
|
|
*
|
|
* @param string $path filename with absolute path in the eGW VFS
|
|
* @return resource
|
|
*/
|
|
static function opendir($path)
|
|
{
|
|
if ($path[0] != '/')
|
|
{
|
|
throw new egw_exception_assertion_failed("Directory '$path' is not an absolute path!");
|
|
}
|
|
return opendir(self::SCHEME.'://default'.$path);
|
|
}
|
|
|
|
/**
|
|
* copy working on just the eGW VFS
|
|
*
|
|
* @param string $from
|
|
* @param string $to
|
|
* @return boolean
|
|
*/
|
|
static function copy($from,$to)
|
|
{
|
|
$ret = false;
|
|
|
|
if (($from_fp = self::fopen($from,'r')) &&
|
|
($to_fp = self::fopen($to,'w')))
|
|
{
|
|
$ret = stream_copy_to_stream($from_fp,$to_fp) !== false;
|
|
}
|
|
if ($from_fp)
|
|
{
|
|
fclose($from_fp);
|
|
}
|
|
if ($to_fp)
|
|
{
|
|
fclose($to_fp);
|
|
}
|
|
return $ret;
|
|
}
|
|
|
|
/**
|
|
* stat working on just the eGW VFS (alias of url_stat)
|
|
*
|
|
* @param string $path filename with absolute path in the eGW VFS
|
|
* @return resource
|
|
*/
|
|
static function stat($path)
|
|
{
|
|
if ($path[0] != '/')
|
|
{
|
|
throw new egw_exception_assertion_failed("File '$path' is not an absolute path!");
|
|
}
|
|
if (($stat = self::url_stat($path,0)))
|
|
{
|
|
$stat = array_slice($stat,13); // remove numerical indices 0-12
|
|
}
|
|
return $stat;
|
|
}
|
|
|
|
/**
|
|
* is_dir() version working only inside the vfs
|
|
*
|
|
* @param string $path
|
|
* @return boolean
|
|
*/
|
|
static function is_dir($path)
|
|
{
|
|
return $path[0] == '/' && is_dir(self::SCHEME.'://default'.$path);
|
|
}
|
|
|
|
|
|
/**
|
|
* Mounts $url under $path in the vfs, called without parameter it returns the fstab
|
|
*
|
|
* The fstab is stored in the eGW configuration and used for all eGW users.
|
|
*
|
|
* @param string $url=null url of the filesystem to mount, eg. oldvfs://default/
|
|
* @param string $path=null path to mount the filesystem in the vfs, eg. /
|
|
* @return array/boolean array with fstab, if called without parameter or true on successful mount
|
|
*/
|
|
static function mount($url=null,$path=null)
|
|
{
|
|
if (is_null($url) || is_null($path))
|
|
{
|
|
return self::$fstab;
|
|
}
|
|
if (!self::$is_root)
|
|
{
|
|
return false; // only root can mount
|
|
}
|
|
if (isset(self::$fstab[$path]))
|
|
{
|
|
return true; // already mounted
|
|
}
|
|
if (stat($url) === false && opendir($url) === false)
|
|
{
|
|
return false; // url does not exist
|
|
}
|
|
self::$fstab[$path] = $url;
|
|
|
|
uksort(self::$fstab,create_function('$a,$b','return strlen($a)-strlen($b);'));
|
|
|
|
config::save_value('vfs_fstab',self::$fstab,'phpgwapi');
|
|
$GLOBALS['egw_info']['server']['vfs_fstab'] = self::$fstab;
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Unmounts a filesystem part of the vfs
|
|
*
|
|
* @param string $path url or path of the filesystem to unmount
|
|
*/
|
|
static function umount($path)
|
|
{
|
|
if (!self::$is_root)
|
|
{
|
|
return false; // only root can mount
|
|
}
|
|
if (!isset(self::$fstab[$path]) && ($path = array_search($path,self::$fstab)) === false)
|
|
{
|
|
return false; // $path not mounted
|
|
}
|
|
unset(self::$fstab[$path]);
|
|
|
|
config::save_value('vfs_fstab',self::$fstab,'phpgwapi');
|
|
$GLOBALS['egw_info']['server']['vfs_fstab'] = self::$fstab;
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* find = recursive search over the filesystem
|
|
*
|
|
* @param string/array $base base of the search
|
|
* @param array $options=null the following keys are allowed:
|
|
* - type => {d|f} d=dirs, f=files, default both
|
|
* - depth => {true|false(default)} put the contents of a dir before the dir itself
|
|
* - mindepth,maxdepth minimal or maximal depth to be returned
|
|
* - name,path => pattern with *,? wildcards, eg. "*.php"
|
|
* - name_preg,path_preg => preg regular expresion, eg. "/(vfs|wrapper)/"
|
|
* - uid,user,gid,group,nouser,nogroup file belongs to user/group with given name or (numerical) id
|
|
* - mime => type[/subtype]
|
|
* - empty,size => (+|-|)N
|
|
* - cmin/mmin => (+|-|)N file/dir create/modified in the last N minutes
|
|
* - ctime/mtime => (+|-|)N file/dir created/modified in the last N days
|
|
* - depth => (+|-)N
|
|
* - url => false(default),true allow (and return) full URL's instead of VFS pathes (only set it, if you know what you doing securitywise!)
|
|
* - need_mime => false(default),true should we return the mime type
|
|
* - order => name order rows by name column
|
|
* - sort => (ASC|DESC) sort, default ASC
|
|
* - limit => N,[n=0] return N entries from position n on, which defaults to 0
|
|
* @param string/array/true $exec=null function to call with each found file or dir as first param or
|
|
* true to return file => stat pairs
|
|
* @param array $exec_params=null further params for exec as array, path is always the first param!
|
|
* @return array of pathes if no $exec, otherwise path => stat pairs
|
|
*/
|
|
static function find($base,$options=null,$exec=null,$exec_params=null)
|
|
{
|
|
//error_log(__METHOD__."(".print_r($base,true).",".print_r($options,true).",".print_r($exec,true).",".print_r($exec_params,true).")\n");
|
|
|
|
$type = $options['type']; // 'd' or 'f'
|
|
$dirs_last = $options['depth']; // put content of dirs before the dir itself
|
|
|
|
// process some of the options (need to be done only once)
|
|
if (isset($options['name']) && !isset($options['name_preg'])) // change from simple *,? wildcards to preg regular expression once
|
|
{
|
|
$options['name_preg'] = '/^'.str_replace(array('\\?','\\*'),array('.{1}','.*'),preg_quote($options['name'])).'$/i';
|
|
}
|
|
if (isset($options['path']) && !isset($options['preg_path'])) // change from simple *,? wildcards to preg regular expression once
|
|
{
|
|
$options['path_preg'] = '/^'.str_replace(array('\\?','\\*'),array('.{1}','.*'),preg_quote($options['path'])).'$/i';
|
|
}
|
|
if (!isset($options['uid']))
|
|
{
|
|
if (isset($options['user']))
|
|
{
|
|
$options['uid'] = $GLOBALS['egw']->accounts->name2id($options['user'],'account_lid','u');
|
|
}
|
|
elseif (isset($options['nouser']))
|
|
{
|
|
$options['uid'] = 0;
|
|
}
|
|
}
|
|
if (!isset($options['gid']))
|
|
{
|
|
if (isset($options['group']))
|
|
{
|
|
$options['gid'] = abs($GLOBALS['egw']->accounts->name2id($options['group'],'account_lid','g'));
|
|
}
|
|
elseif (isset($options['nogroup']))
|
|
{
|
|
$options['gid'] = 0;
|
|
}
|
|
}
|
|
if ($options['order'] == 'mime')
|
|
{
|
|
$options['need_mime'] = true; // we need to return the mime colum
|
|
}
|
|
$url = $options['url'];
|
|
|
|
if (!is_array($base))
|
|
{
|
|
$base = array($base);
|
|
}
|
|
$result = array();
|
|
foreach($base as $path)
|
|
{
|
|
if (!$url) $path = egw_vfs::PREFIX . $path;
|
|
|
|
$is_dir = is_dir($path);
|
|
if (!isset($options['remove']))
|
|
{
|
|
$options['remove'] = count($base) == 1 ? ($path == '/' ? 1 : strlen($path)+1) : 0;
|
|
}
|
|
if ((int)$options['mindepth'] == 0 && (!$dirs_last || !$is_dir))
|
|
{
|
|
self::_check_add($options,$path,$result);
|
|
}
|
|
if ($is_dir && (!isset($options['maxdepth']) || $options['maxdepth'] > 0) && ($dir = @opendir($path)))
|
|
{
|
|
while($file = readdir($dir))
|
|
{
|
|
$file = $path.'/'.$file;
|
|
|
|
if ((int)$options['mindepth'] <= 1)
|
|
{
|
|
self::_check_add($options,$file,$result,1);
|
|
}
|
|
if (is_dir($file) && (!isset($options['maxdepth']) || $options['maxdepth'] > 1))
|
|
{
|
|
$opts = $options;
|
|
if ($opts['mindepth']) $opts['mindepth']--;
|
|
if ($opts['maxdepth']) $opts['maxdepth']++;
|
|
unset($opts['order']);
|
|
unset($opts['limit']);
|
|
foreach(self::find($options['url']?$file:parse_url($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']))
|
|
{
|
|
$sort = strtolower($options['sort']) == 'desc' ? '-' : '';
|
|
switch($options['order'])
|
|
{
|
|
// sort numerical
|
|
case 'size':
|
|
case 'uid':
|
|
case 'gid':
|
|
case 'mode':
|
|
case 'ctime':
|
|
case 'mtime':
|
|
uasort($result,create_function('$a,$b',$c='return '.$sort.'($a[\''.$options['order'].'\']-$b[\''.$options['order'].'\']);'));
|
|
break;
|
|
|
|
// sort alphanumerical
|
|
default:
|
|
$options['order'] = 'name';
|
|
// fall throught
|
|
case 'name':
|
|
case 'mime':
|
|
case 'comment': // ToDo: fetch it for sqlfs or oldvfs
|
|
uasort($result,create_function('$a,$b',$c='return '.$sort.'strcasecmp($a[\''.$options['order'].'\'],$b[\''.$options['order'].'\']);'));
|
|
break;
|
|
}
|
|
//echo "order='$options[order]', sort='$options[sort]' --> '$c'<br>\n";
|
|
}
|
|
// limit resultset
|
|
self::$find_total = count($result);
|
|
if (isset($options['limit']))
|
|
{
|
|
list($limit,$start) = explode(',',$options['limit']);
|
|
if (!$limit && !($limit = $GLOBALS['egw_info']['user']['preferences']['comman']['maxmatches'])) $limit = 15;
|
|
//echo "total=".egw_vfs::$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,$path);
|
|
//echo "calling ".print_r($exec,true).print_r($options,true)."\n";
|
|
$stat = call_user_func_array($exec,$options);
|
|
}
|
|
return $result;
|
|
}
|
|
//echo "egw_vfs::find($path)="; _debug_array(array_keys($result));
|
|
if ($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 $options options, see egw_vfs::find(,$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
|
|
* @param int $remove=0 how many leading chars to remove from path to get name, default 0 = use basename
|
|
*/
|
|
private static function _check_add($options,$path,&$result,$remove=0)
|
|
{
|
|
$type = $options['type']; // 'd' or 'f'
|
|
|
|
if ($type && ($type == 'd') !== is_dir($path))
|
|
{
|
|
return; // wrong type
|
|
}
|
|
if (!($stat = self::url_stat($path,0)))
|
|
{
|
|
return; // not found, should not happen
|
|
}
|
|
$stat = array_slice($stat,13); // remove numerical indices 0-12
|
|
$stat['name'] = $options['remove'] > 0 ? substr($path,$options['remove']) : self::basename($path);
|
|
$stat['path'] = parse_url($path,PHP_URL_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))
|
|
{
|
|
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'] != $stat['mime'])
|
|
{
|
|
list($type,$subtype) = explode('/',$options['mime']);
|
|
// no subtype (eg. 'image') --> check only the main type
|
|
if ($sub_type || substr($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['ctime'])/86400),$options['mtime']))
|
|
{
|
|
return; // not create/modified in the spezified time
|
|
}
|
|
// do we return url or just vfs pathes
|
|
if (!$options['url'])
|
|
{
|
|
$path = parse_url($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);
|
|
}
|
|
|
|
/**
|
|
* Recursiv remove all given url's, including it's content if they are files
|
|
*
|
|
* @param string/array $urls url or array of url's
|
|
* @return array
|
|
*/
|
|
static function remove($urls)
|
|
{
|
|
return self::find($urls,array('depth'=>true),array(__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 (is_dir($url))
|
|
{
|
|
return rmdir($url);
|
|
}
|
|
return 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 $check=4 mode to check: 4 = read, 2 = write, 1 = executable
|
|
* @return boolean
|
|
*/
|
|
static function is_readable($path,$check = 4)
|
|
{
|
|
if (!($stat = self::stat($path)))
|
|
{
|
|
return false;
|
|
}
|
|
return self::check_access($stat,$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 array $stat
|
|
* @param int $check mode to check: one or more or'ed together of: 4 = read, 2 = write, 1 = executable
|
|
* @return boolean
|
|
*/
|
|
static function check_access($stat,$check)
|
|
{
|
|
//error_log(__METHOD__."(stat[name]={$stat['name']},stat[mode]=".sprintf('%o',$stat['mode']).",$check)");
|
|
|
|
if (self::$is_root)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
if (!$stat)
|
|
{
|
|
//error_log(__METHOD__."(stat[name]={$stat['name']},stat[mode]=".sprintf('%o',$stat['mode']).",$check) no stat array!");
|
|
return false; // file not found
|
|
}
|
|
// check if other rights grant access
|
|
if (($stat['mode'] & $check) == $check)
|
|
{
|
|
//error_log(__METHOD__."(stat[name]={$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__."(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'])
|
|
{
|
|
static $memberships;
|
|
if (is_null($memberships))
|
|
{
|
|
$memberships = $GLOBALS['egw']->accounts->memberships(self::$user,true);
|
|
}
|
|
if (in_array(-abs($stat['gid']),$memberships))
|
|
{
|
|
//error_log(__METHOD__."(stat[name]={$stat['name']},stat[mode]=".sprintf('%o',$stat['mode']).",$check) access via group rights!");
|
|
return true;
|
|
}
|
|
}
|
|
// here could be a check for extended acls ...
|
|
|
|
//error_log(__METHOD__."(stat[name]={$stat['name']},stat[mode]=".sprintf('%o',$stat['mode']).",$check) no access!");
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* 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,2);
|
|
}
|
|
|
|
/**
|
|
* 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,1);
|
|
}
|
|
|
|
/**
|
|
* 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 $s)
|
|
{
|
|
if (!preg_match($use='/^([ugoa]*)([+=-]+)([rwx]+)$/',$s,$matches))
|
|
{
|
|
$use = str_replace(array('/','^','$','(',')'),'',$use);
|
|
throw new egw_exception_wrong_userinput("$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 & 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
|
|
{
|
|
$sP = '-';
|
|
}
|
|
elseif($mode & 0xA000) // Symbolic Link
|
|
{
|
|
$sP = 'l';
|
|
}
|
|
elseif($mode & 0xC000) // Socket
|
|
{
|
|
$sP = 's';
|
|
}
|
|
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;
|
|
}
|
|
|
|
/**
|
|
* Human readable size values in k or M
|
|
*
|
|
* @param int $size
|
|
* @return string
|
|
*/
|
|
static function hsize($size)
|
|
{
|
|
if ($size < 1024) return $size;
|
|
if ($size < 1024*1024) return sprintf('%3.1lfk',(float)$size/1024);
|
|
return sprintf('%3.1lfM',(float)$size/(1024*1024));
|
|
}
|
|
|
|
/**
|
|
* 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)
|
|
{
|
|
$parts = explode('/',$path);
|
|
|
|
return array_pop($parts);
|
|
}
|
|
|
|
/**
|
|
* 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 $path
|
|
* @return string
|
|
*/
|
|
static function download_url($path)
|
|
{
|
|
return '/filemanager/webdav.php'.$path;
|
|
}
|
|
}
|
|
|
|
egw_vfs::$user = (int) $GLOBALS['egw_info']['user']['account_id'];
|