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got symlinks working for filesystem streamwrapper and fix one bug in Vfs with symlinks

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This commit is contained in:
Ralf Becker 2021-07-13 13:59:05 +02:00
parent c4c747899f
commit 6502eaeab8
3 changed files with 26 additions and 3 deletions
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26
api/src/Vfs/Filesystem/StreamWrapper.php
View File

@ -54,6 +54,10 @@ class StreamWrapper implements Vfs\StreamWrapperIface
*/
const DIR_MIME_TYPE = Vfs::DIR_MIME_TYPE ;
/**
* mode-bits, which have to be set for files
*/
const MODE_LINK = 0120000;
/**
* mode-bits, which have to be set for files
*/
@ -298,6 +302,23 @@ class StreamWrapper implements Vfs\StreamWrapperIface
return $this->url_stat($this->opened_stream_url,0);
}
/**
* This method is called in response to readlink().
*
* The readlink value is read by url_stat or dir_opendir and therefore cached in the stat-cache.
*
* @param string $path
* @return string|boolean content of the symlink or false if $url is no symlink (or not found)
*/
function readlink($path)
{
if (!($url = Vfs::resolve_url($path)))
{
return false;
}
return readlink(Vfs::parse_url($url, PHP_URL_PATH));
}
/**
* Method called for symlink()
*
@ -554,7 +575,7 @@ class StreamWrapper implements Vfs\StreamWrapperIface
$parts = Vfs::parse_url($url);
$path = Vfs::decodePath($parts['path']);
$stat = @stat($path); // suppressed the stat failed warnings
$stat = $flags & STREAM_URL_STAT_LINK ? @lstat($path) : @stat($path); // suppressed the stat failed warnings
if ($stat)
{
@ -566,7 +587,8 @@ class StreamWrapper implements Vfs\StreamWrapperIface
}
$stat['uid'] = $stat[4] = $uid;
$stat['gid'] = $stat[5] = $gid;
$stat['mode'] = $stat[2] = $stat['mode'] & self::MODE_DIR ? self::MODE_DIR | $mode : self::MODE_FILE | ($mode & ~0111);
$stat['mode'] = $stat[2] = $stat['mode'] & self::MODE_DIR ? self::MODE_DIR | $mode :
((($stat['mode'] & self::MODE_LINK) === self::MODE_LINK ? self::MODE_LINK : self::MODE_FILE) | ($mode & ~0111));
// write rights also depend on the write rights of the webserver
if (!is_writable($path))
{

2
api/src/Vfs/StreamWrapper.php
View File

@ -725,7 +725,7 @@ class StreamWrapper extends Base implements StreamWrapperIface
{
$stat = @stat($url); // suppressed the stat failed warnings
if ($stat && ($stat['mode'] & self::MODE_LINK))
if ($stat && ($stat['mode'] & self::MODE_LINK) === self::MODE_LINK)
{
if (!$check_symlink_depth)
{

1
filemanager/test.php
View File

@ -24,6 +24,7 @@ if (!($path = Api\Cache::getSession('filemanger','test')))
}
if (isset($_REQUEST['path'])) $path = $_REQUEST['path'];
echo Api\Html::form("<p>Path: ".Api\Html::input('path',$path,'text','size="40"').
Api\Html::input_hidden(['cd'=>'no']).
Api\Html::submit_button('',lang('Submit'))."</p>\n",array(),'','','','','GET');
if (isset($path) && !empty($path))