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https://github.com/EGroupware/egroupware.git
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"fixed some problem with the new symlinks (specially between different stream-wrappers) and added a permanent loggin facility"
This commit is contained in:
Ralf Becker
parent
e966c73feb
commit
5501dd0fc3
@ -7,7 +7,7 @@
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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 by Ralf Becker <RalfBecker-AT-outdoor-training.de>
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* @copyright (c) 2008-9 by Ralf Becker <RalfBecker-AT-outdoor-training.de>
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* @version $Id$
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*/
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@ -17,15 +17,6 @@
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* The new vfs stream wrapper uses a kind of fstab to mount different filesystems / stream wrapper types
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* together for eGW's virtual file system.
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*
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* @ToDo extended ACL with inheritance and specific rights for users or groups
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* Backends can implement them, in which case they get stored independent of the current mount-points.
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* If the backend does not implement them, they get stored by the VFS under the final URL of the backend,
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* to also allow mounts to change. The URL's to these extended attributes need to be renamed, when the
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* file or an underlaying directory get's renamed. That's the task of the backend, if it chooses to
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* implement extended ACL itself.
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* @ToDo storage for WebDAV properties
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* @ToDo implement the necessary function of WebDAV locks
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*
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* @link http://www.php.net/manual/en/function.stream-wrapper-register.php
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*/
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class vfs_stream_wrapper implements iface_stream_wrapper
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@ -54,6 +45,15 @@ class vfs_stream_wrapper implements iface_stream_wrapper
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*/
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const MODE_LINK = 0120000;
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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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* Our fstab in the form mount-point => url
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*
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@ -117,13 +117,18 @@ class vfs_stream_wrapper implements iface_stream_wrapper
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if (!($stat = self::url_stat($path,$resolve_last_symlink?0:STREAM_URL_STAT_LINK)) && !$file_exists)
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{
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$ret = self::check_symlink_components($path,0,$url);
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//error_log(__METHOD__."('$path',$file_exists) check_symlink_components()=$ret, url='$url'");
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if (self::LOG_LEVEL > 1) $log = " (check_symlink_components('$path',0,'$url') = $ret)";
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}
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else
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{
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$url = $stat['url'];
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}
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//error_log(__METHOD__."($path,file_exists=$file_exists,resolve_last_symlink=$resolve_last_symlink) = '$url'");
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// if the url resolves to a symlink to the vfs, resolve this vfs:// url direct
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if ($url && parse_url($url,PHP_URL_SCHEME) == self::SCHEME)
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{
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$url = self::resolve_url(parse_url($url,PHP_URL_PATH));
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}
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if (self::LOG_LEVEL > 1) error_log(__METHOD__."($path,file_exists=$file_exists,resolve_last_symlink=$resolve_last_symlink) = '$url'$log");
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return $url;
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}
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@ -140,6 +145,7 @@ class vfs_stream_wrapper implements iface_stream_wrapper
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// we do some caching here
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if (isset($cache[$path]))
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{
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if (self::LOG_LEVEL > 1) error_log(__METHOD__."('$path') = '{$cache[$path]}' (from cache)");
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return $cache[$path];
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}
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// setting default user, passwd and domain, if it's not contained int the url
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@ -157,6 +163,7 @@ class vfs_stream_wrapper implements iface_stream_wrapper
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if (!empty($parts['scheme']) && $parts['scheme'] != self::SCHEME)
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{
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if (self::LOG_LEVEL > 1) error_log(__METHOD__."('$path') = '$path' (path is already an url)");
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return $path; // path is already a non-vfs url --> nothing to do
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}
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if (empty($parts['path'])) $parts['path'] = '/';
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@ -177,11 +184,11 @@ class vfs_stream_wrapper implements iface_stream_wrapper
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if ($parts['query']) $url .= '?'.$parts['query'];
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if ($parts['fragment']) $url .= '#'.$parts['fragment'];
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//error_log(__METHOD__."($path) = $url");
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if (self::LOG_LEVEL > 1) error_log(__METHOD__."('$path') = '$url'");
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return $cache[$path] = $url;
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}
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}
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//error_log(__METHOD__."($path) can't resolve path!\n");
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if (self::LOG_LEVEL > 0) error_log(__METHOD__."('$path') can't resolve path!\n");
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trigger_error(__METHOD__."($path) can't resolve path!\n",E_USER_WARNING);
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return false;
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}
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@ -618,34 +625,30 @@ class vfs_stream_wrapper implements iface_stream_wrapper
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*/
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function dir_opendir ( $path, $options )
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{
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//error_log(__METHOD__." called with ".$path);
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$this->opened_dir = $this->extra_dirs = null;
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$this->extra_dir_ptr = 0;
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if (!($this->opened_dir_url = self::resolve_url_symlinks($path)))
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{
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if (self::LOG_LEVEL > 0) error_log(__METHOD__."( $path,$options) resolve_url_symlinks() failed!");
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return false;
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}
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if (!($this->opened_dir = opendir($this->opened_dir_url)))
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{
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//error_log(__METHOD__." dir failed: ".$this->opened_dir);
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if (self::LOG_LEVEL > 0) error_log(__METHOD__."( $path,$options) opendir($this->opened_dir_url) failed!");
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return false;
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}
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$this->opened_dir_writable = egw_vfs::check_access($this->opened_dir_url,egw_vfs::WRITABLE);
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#error_log(__METHOD__." check for ".$this->opened_dir_url);
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// check our fstab if we need to add some of the mountpoints
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$basepath = parse_url($this->opened_dir_url,PHP_URL_PATH);
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#error_log(__METHOD__." basepath here: ".print_r($basepath,true));
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$basepath = parse_url($path,PHP_URL_PATH);
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foreach(self::$fstab as $mounted => $nul)
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{
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#error_log(__METHOD__." dirname mounted: ".print_r(dirname($mounted),true));
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if ((dirname($mounted) == $basepath || dirname($mounted)."/" == $basepath) && $mounted != '/')
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if ((dirname($mounted) == $basepath || dirname($mounted).'/' == $basepath) && $mounted != '/')
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{
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#error_log(__METHOD__." mounted dir: ".print_r($mounted,true));
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$this->extra_dirs[] = basename($mounted);
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}
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}
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if (self::LOG_LEVEL > 1) error_log(__METHOD__."( $path,$options): opendir($this->opened_dir_url)=$this->opened_dir, extra_dirs=".array2string($this->extra_dirs).', '.function_backtrace());
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return true;
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}
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@ -679,13 +682,13 @@ class vfs_stream_wrapper implements iface_stream_wrapper
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*/
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static function url_stat ( $path, $flags, $try_create_home=true, $check_symlink_components=true )
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{
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//error_log(__METHOD__."('$path',$flags)");
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if (self::LOG_LEVEL > 1) error_log(__METHOD__."('$path',$flags,try_create_home=$try_create_home,check_symlink_components=$check_symlink_components)");
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if (!($url = self::resolve_url($path)))
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{
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if (self::LOG_LEVEL > 0) error_log(__METHOD__."('$path',$flags) can NOT resolve path!");
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return false;
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}
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//error_log(__METHOD__."('$path',$flags) calling stat($url)");
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if ($flags & STREAM_URL_STAT_LINK)
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{
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$stat = @lstat($url); // suppressed the stat failed warnings
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@ -696,17 +699,12 @@ class vfs_stream_wrapper implements iface_stream_wrapper
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if ($stat && ($stat['mode'] & self::MODE_LINK) && ($l=$lpath = self::readlink($url)))
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{
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if ($lpath[0] != '/') // contact releative path
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if ($lpath[0] != '/') // concat relative path
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{
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$url = egw_vfs::concat($url,'../'.$lpath);
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$lpath = egw_vfs::concat(parse_url($path,PHP_URL_PATH),'../'.$lpath);
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}
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else // or replace absolute path in url
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{
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$url_parts = parse_url($url);
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$url_parts['path'] = $lpath;
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$url = egw_vfs::build_url($url_parts);
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}
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//error_log(__METHOD__."($path,$flags) symlink found and resolved to $url");
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$url = egw_vfs::PREFIX.$lpath;
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if (self::LOG_LEVEL > 1) error_log(__METHOD__."($path,$flags) symlink found and resolved to $url");
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$stat = @stat($url);
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}
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}
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@ -754,37 +752,34 @@ class vfs_stream_wrapper implements iface_stream_wrapper
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{
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if (is_null($url) && !($url = self::resolve_url($path)))
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{
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if (self::LOG_LEVEL > 0) error_log(__METHOD__."('$path',$flags,'$url') can NOT resolve path: ".function_backtrace(1));
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return false;
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}
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//echo "<p>".__METHOD__."('$path',$flags,'$url'): ".function_backtrace(1)."</p>\n";
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if (self::LOG_LEVEL > 1) error_log(__METHOD__."('$path',$flags,'$url'): ".function_backtrace(1));
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while (($rel_path = egw_vfs::basename($url).($rel_path ? '/'.$rel_path : '')) &&
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($url = egw_vfs::dirname($url)))
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{
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$stat = self::url_stat($url,0,false,false);
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//echo "<p>rel_path='$rel_path', stat(url='$url')=".array2string($stat)."</p>\n";
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if (($stat = self::url_stat($url,0,false,false)))
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{
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if (is_link($url) && ($lpath = self::readlink($url)))
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{
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//echo "<p>rel_path='$rel_path', url='$url': lpath='$lpath'\n";
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if (self::LOG_LEVEL > 1) $log = "rel_path='$rel_path', url='$url': lpath='$lpath'";
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if ($lpath[0] != '/')
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{
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$url = egw_vfs::concat($url,'../'.$lpath);
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$lpath = egw_vfs::concat(parse_url($url,PHP_URL_PATH),'../'.$lpath);
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}
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else
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{
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$url_parts = parse_url($url);
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$url_parts['path'] = $lpath;
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$url = egw_vfs::build_url($url_parts);
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}
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$url = egw_vfs::concat($url,$rel_path);
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//echo "--> <b>url='$url'</b></p>\n";
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$url = egw_vfs::PREFIX.egw_vfs::concat($lpath,$rel_path);
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if (self::LOG_LEVEL > 1) error_log("$log --> lpath='$lpath', url='$url'");
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return self::url_stat($url,$flags);
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}
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$url = egw_vfs::concat($url,$rel_path);
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if (self::LOG_LEVEL > 1) error_log(__METHOD__."('$path',$flags,'$url') returning null");
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return null;
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}
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}
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if (self::LOG_LEVEL > 1) error_log(__METHOD__."('$path',$flags,'$url') returning false");
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return false; // $path does not exist
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}
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@ -800,21 +795,21 @@ class vfs_stream_wrapper implements iface_stream_wrapper
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*/
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function dir_readdir ( )
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{
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#error_log(__METHOD__." called.");
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if ($this->extra_dirs && count($this->extra_dirs) > $this->extra_dir_ptr)
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{
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return $this->extra_dirs[$this->extra_dir_ptr++];
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$file = $this->extra_dirs[$this->extra_dir_ptr++];
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}
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// only return children readable by the user, if dir is not writable
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do {
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//error_log(__METHOD__." called with:".$this->opened_dir_url);
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$file = readdir($this->opened_dir);
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//error_log(__METHOD__." got:".$file);
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else
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{
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// only return children readable by the user, if dir is not writable
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do {
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$file = readdir($this->opened_dir);
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}
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while($file !== false && (is_array($this->extra_dirs) && in_array($file,$this->extra_dirs) || // dont return mountpoints twice
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self::HIDE_UNREADABLES && !$this->opened_dir_writable &&
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!egw_vfs::check_access(egw_vfs::concat($this->opened_dir_url,$file),egw_vfs::READABLE)));
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}
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while($file !== false && (is_array($this->extra_dirs) && in_array($file,$this->extra_dirs) || // dont return mountpoints twice
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self::HIDE_UNREADABLES && !$this->opened_dir_writable &&
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!egw_vfs::check_access(egw_vfs::concat($this->opened_dir_url,$file),egw_vfs::READABLE)));
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if (self::LOG_LEVEL > 1) error_log(__METHOD__."( $this->opened_dir ) = '$file'");
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return $file;
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}
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