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1119 lines
24 KiB
Plaintext
1119 lines
24 KiB
Plaintext
#LyX 1.1 created this file. For more info see http://www.lyx.org/
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\lyxformat 218
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\textclass linuxdoc
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\language english
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\inputencoding latin1
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\fontscheme default
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\graphics default
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\paperfontsize default
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\spacing single
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\papersize Default
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\paperpackage a4
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\use_geometry 0
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\use_amsmath 0
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\paperorientation portrait
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\secnumdepth 5
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\tocdepth 5
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\paragraph_separation indent
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\defskip medskip
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\quotes_language english
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\quotes_times 2
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\papercolumns 1
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\papersides 1
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\paperpagestyle default
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\layout Title
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\added_space_top vfill \added_space_bottom vfill
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phpgwapi - VFS Class
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\layout Author
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Jason Wies
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\layout Date
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June 2001, February 2002
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\layout Abstract
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The VFS, or Virtual File System, handles all file system activity for phpGroupWa
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re.
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\layout Section
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Introduction and Purpose
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\begin_inset LatexCommand \label{sec:introduction}
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\end_inset
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\layout Standard
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The latest version of the VFS for eGoupWare combines actual file system
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manipulation with fully integrated database support.
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It features nearly transparent handling of files and directories, as well
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as files inside and outside the virtual root.
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This document is intended to provide API and application developers with
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a guide to incorporating the VFS into their work.
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\layout Section
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Basics
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\begin_inset LatexCommand \label{sec:basics}
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\end_inset
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\layout Subsection
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Prerequisites
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\begin_inset LatexCommand \label{sec:prerequisites}
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\end_inset
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\layout Standard
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You must explicitly enable the VFS class.
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To do this, set 'enable_vfs_class' to True in $GLOBALS['phpgw_info']['flags'].
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An example:
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\layout Verbatim
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$GLOBALS['phpgw_info']['flags'] = array(
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\layout Verbatim
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'currentapp' => 'phpwebhosting',
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\layout Verbatim
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'noheader' => False,
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\layout Verbatim
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'noappheader' => False,
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\layout Verbatim
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'enable_vfs_class' => True,
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\layout Verbatim
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'enable_browser_class' => True
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\layout Verbatim
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);
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\layout Subsection
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Concepts
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\begin_inset LatexCommand \label{sec:concepts}
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\end_inset
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\layout Standard
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The VFS in located in phpgwapi/inc/class.vfs_sql.inc.php.
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You can look over it, but I don't suggest trying to understand how it works.
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It isn't necessary to know its internals to use it, but you may find the
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inline comments helpful.
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The basic things to keep in mind:
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\layout Itemize
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Files and directories are synonymous in almost all cases
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\layout Verbatim
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$GLOBALS['phpgw']->vfs->mv (array(
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\layout Verbatim
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'from' => 'file1',
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\layout Verbatim
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'to' => 'dir/file2'
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\layout Verbatim
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));
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\layout Verbatim
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\layout Verbatim
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$GLOBALS['phpgw']->vfs->mv (array(
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\layout Verbatim
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'from' => 'dir1',
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\layout Verbatim
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'to' => 'dir/dir1'
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\layout Verbatim
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));
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\layout Verbatim
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\layout Verbatim
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$GLOBALS['phpgw']->vfs->rm (array(
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\layout Verbatim
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'string' => 'file'
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\layout Verbatim
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));
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\layout Verbatim
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\layout Verbatim
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$GLOBALS['phpgw']->vfs->rm (array(
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\layout Verbatim
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'string' => 'dir'
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\layout Verbatim
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));
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\layout Standard
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All work as you would except them to.
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The major exception is:
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\layout Verbatim
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$GLOBALS['phpgw']->vfs->touch (array(
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\layout Verbatim
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'string' => 'file'
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\layout Verbatim
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));
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\layout Standard
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vs.
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\layout Verbatim
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$GLOBALS['phpgw']->vfs->mkdir (array(
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\layout Verbatim
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'string' => 'dir'
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\layout Verbatim
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));
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\layout Verbatim
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\layout Itemize
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Users and groups are synonymous
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\layout Standard
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As far as the actual paths are concerned, users and groups are the same.
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/home/username works the same as /home/groupname.
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\layout Itemize
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You should never have to know the real paths of files
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\layout Standard
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One of the VFS's responsibilities is to translate paths for you.
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While you certainly
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\emph on
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can
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\emph default
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operate using full paths, it is much simpler to use the virtual paths.
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For example, instead of using:
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\layout Verbatim
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$GLOBALS['phpgw']->vfs->cp (array(
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\layout Verbatim
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'from' => '/var/www/egroupware/files/home/user/file1',
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\layout Verbatim
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'to' => '/var/www/egroupware/files/home/user/file2',
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\layout Verbatim
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'relatives' => array(
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\layout Verbatim
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RELATIVE_NONE|VFS_REAL,
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\layout Verbatim
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RELATIVE_NONE|VFS_REAL
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\layout Verbatim
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)
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\layout Verbatim
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));
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\layout Standard
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you might use
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\layout Verbatim
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$GLOBALS['phpgw']->vfs->cp (array(
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\layout Verbatim
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'from' => '/home/user/file1',
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\layout Verbatim
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'to' => '/home/user/file2',
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\layout Verbatim
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'relatives' => array(
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\layout Verbatim
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RELATIVE_NONE,
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\layout Verbatim
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RELATIVE_NONE
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\layout Verbatim
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)
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\layout Verbatim
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));
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\layout Standard
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(We'll get to the RELATIVE's in a minute.)
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\layout Standard
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Site administrators should be able to move their files dir around on their
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system and know that everything will continue to work smoothly.
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\layout Itemize
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Relativity is
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\emph on
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vital
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\layout Standard
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Relativity is a new feature in the VFS, and its importance cannot be stressed
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enough.
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It will make your life much easier, especially for file system intensive
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applications, but it will take some getting used to.
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If something doesn't work right the first time, chances are great it has
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to do with incorrect relativity settings.
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We will deal with relativity in depth in the Relativity section.
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\layout Section
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Basic Functions
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\begin_inset LatexCommand \label{sec:basic_functions}
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\end_inset
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\layout Standard
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These are two functions you'll need to know before we get into relativity.
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\layout Subsection
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path_parts ()
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\begin_inset LatexCommand \label{sec:path_parts}
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\end_inset
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\layout Standard
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The job of path_parts () is to translate any given file location into its
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many component parts for any relativity.
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The values passed to path_parts () are:
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\layout Verbatim
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string
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\layout Verbatim
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relatives
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\layout Verbatim
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object
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\layout Standard
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'string' is the path you want to translate, 'relatives' is the standard
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relativity array, and 'object' specifies how you would like the return
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value: if 'object' is True, an object will be returned; if 'object' is
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False, an array will be returned.
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I think you'll find the object easier to deal with, and we'll be using
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it throughout this document.
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The most important returned values (but not all) for path_parts () are:
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\layout Verbatim
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fake_full_path
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\layout Verbatim
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fake_leading_dirs
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\layout Verbatim
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fake_extra_path
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\layout Verbatim
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fake_name
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\layout Verbatim
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real_full_path
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\layout Verbatim
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real_leading_dirs
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\layout Verbatim
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real_extra_path
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\layout Verbatim
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real_name
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\layout Standard
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Just like you would think, fake_full_path contains the full virtual path
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of 'string', and real_full_path contains the full real path of 'string'.
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The fake_name and real_name variables should always be the same, and contain
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the final file or directory name.
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The leading_dirs contain everything except the name, and the extra_path
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is everything from the / before
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\begin_inset Quotes eld
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\end_inset
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home
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\begin_inset Quotes erd
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\end_inset
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to the end of the leading_dirs.
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To better illustrate, here is an example:
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\layout Verbatim
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$p = $GLOBALS['phpgw']->vfs->path_parts (array(
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\layout Verbatim
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'string' => '/home/jason/dir/file',
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\layout Verbatim
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'relatives' => array(
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\layout Verbatim
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RELATIVE_NONE
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\layout Verbatim
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)
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\layout Verbatim
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));
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\layout Itemize
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$p->fake_full_path - /home/jason/dir/file
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\layout Itemize
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$p->fake_leading_dirs - /home/jason/dir
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\layout Itemize
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$p->fake_extra_path - home/jason/dir
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\layout Itemize
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$p->fake_name - file
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\layout Itemize
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$p->real_full_path - /var/www/egroupware/files/home/jason/dir/file
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\layout Itemize
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$p->real_leading_dirs - /var/www/egroupware/files/home/jason/dir
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\layout Itemize
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$p->real_extra_path - home/jason/dir
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\layout Itemize
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$p->real_name - file
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\layout Standard
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As you can see, path_parts () is a very useful function and will save you
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from doing those darn substr ()'s yourself.
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For those of you used to the prior VFS, note that
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\emph on
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getabsolutepath () is depreciated
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\emph default
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.
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getabsolutepath () still exists (albeit in a much different form), and
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is responsible for some of the path translation, but it is an
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\emph on
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internal
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\emph default
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function only.
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Applications should only use path_parts ().
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We have shown you how to use path_parts () so you can experiment with it
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using different paths and relativities as we explore relativity.
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\layout Subsection
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cd ()
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\begin_inset LatexCommand \label{sec:cd}
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\end_inset
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\layout Standard
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Part of the overall goal for the VFS in eGoupWare is to give the user
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a seamless experience during their session.
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For example, if they upload a file using a file manager to the directory
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/home/my_group/project1, and then go to download an email attachment, the
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default directory will be /home/my_group/project1.
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This is accomplished using the cd () function.
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Examples:
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\layout Verbatim
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/* cd to their home directory */
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\layout Verbatim
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$GLOBALS['phpgw']->vfs->cd (array(
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\layout Verbatim
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'string' => '/'
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\layout Verbatim
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));
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\layout Verbatim
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\layout Verbatim
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/* cd to /home/jason/dir */
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\layout Verbatim
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$GLOBALS['phpgw']->vfs->cd (array(
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\layout Verbatim
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'string' => '/home/jason/dir',
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\layout Verbatim
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'relative' => False,
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\layout Verbatim
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'relatives' => array(
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\layout Verbatim
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RELATIVE_NONE
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\layout Verbatim
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)
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\layout Verbatim
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));
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\layout Verbatim
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\layout Verbatim
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/* When following the above, cd's to /home/jason/dir/dir2 */
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\layout Verbatim
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$GLOBALS['phpgw']->vfs->cd (array(
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\layout Verbatim
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'string' => 'dir2',
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\layout Verbatim
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'relative' => True
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\layout Verbatim
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));
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\layout Standard
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If 'relative' is True, the 'string' is simply appended to the current path.
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If you want to know what the current path is, use $GLOBALS['phpgw']->vfs->pwd
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().
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\layout Standard
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Now you're ready for relativity.
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\layout Section
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|
Relativity
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\begin_inset LatexCommand \label{sec:relativity}
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\end_inset
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\layout Standard
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Ok, just one last thing before we get into relativity.
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You will notice throughout the examples the use of $fakebase.
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$GLOBALS['phpgw']->vfs->fakebase is by default '/home'.
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The old VFS was hard-coded to use '/home', but the naming choice for this
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is now up to administrators.
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See the
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\begin_inset LatexCommand \ref[Fakebase directory (changing /home)]{sec:fakebase}
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\end_inset
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section for more information.
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Throughout the rest of this document, you will see $fakebase used in calls
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to the VFS, and /home used in actual paths.
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\emph on
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You should always use $fakebase when making applications.
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\emph default
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I suggest doing $fakebase = $GLOBALS['phpgw']->vfs->fakebase; right off
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the bat to keep things neater.
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\layout Subsection
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What is it and how does it work?
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|
\layout Standard
|
|
|
|
One of the design challenges for a Virtual File System is to try to figure
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out whether the calling application is referring to a file inside or outside
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the virtual root, and if inside, exactly where.
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To solve this problem, the eGoupWare VFS uses RELATIVE defines that
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are used in bitmasks passed to each function.
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The result is that any set of different relativities can be used in combination
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with each other.
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|
Let's look at a few examples.
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Say you want to move 'logo.png' from the user's home directory to the current
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directory.
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\layout Verbatim
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|
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|
$GLOBALS['phpgw']->vfs->mv (array(
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|
\layout Verbatim
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|
|
|
'from' => 'logo.png',
|
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\layout Verbatim
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|
|
|
'to' => 'logo.png',
|
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\layout Verbatim
|
|
|
|
'relatives' => array(
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|
\layout Verbatim
|
|
|
|
RELATIVE_USER,
|
|
\layout Verbatim
|
|
|
|
RELATIVE_ALL
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|
\layout Verbatim
|
|
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|
)
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\layout Verbatim
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|
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|
));
|
|
\layout Standard
|
|
|
|
RELATIVE_USER means relative to the user's home directory.
|
|
RELATIVE_ALL means relative to the current directory, as set by cd () and
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|
as reported by pwd ().
|
|
So if the current directory was
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|
\begin_inset Quotes eld
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|
\end_inset
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|
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|
$fakebase/my_group/project1
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|
\begin_inset Quotes erd
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|
\end_inset
|
|
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|
, the call to mv () would be processed as:
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|
\layout Verbatim
|
|
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|
MOVE
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|
\begin_inset Quotes eld
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|
\end_inset
|
|
|
|
$fakebase/jason/logo.png
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|
\begin_inset Quotes erd
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|
\end_inset
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|
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|
TO
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|
\begin_inset Quotes eld
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|
\end_inset
|
|
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|
$fakebase/my_group/project1/logo.png
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|
\begin_inset Quotes erd
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|
\end_inset
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|
|
|
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|
\layout Standard
|
|
|
|
and the actual file system call would be:
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|
\layout Verbatim
|
|
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|
rename ('/var/www/egroupware/files/home/jason/logo.php', '/var/www/egroupware
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|
/files/home/my_group/project1/logo.png');
|
|
\layout Standard
|
|
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|
Those used to the old VFS will note that you do not have to translate the
|
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path beforehand.
|
|
Let's look at another example.
|
|
Suppose you were moving an email attachment stored in eGoupWare's temporary
|
|
directory to the 'attachments' directory within the user's home directory
|
|
(we're assuming the attachments directory exists).
|
|
Note that the temporary directory is
|
|
\emph on
|
|
outside
|
|
\emph default
|
|
the virtual root.
|
|
\layout Verbatim
|
|
|
|
$GLOBALS['phpgw']->vfs->mv (array(
|
|
\layout Verbatim
|
|
|
|
'from' => $GLOBALS['phpgw_info']['server']['temp_dir'] .
|
|
'/' .
|
|
$randomdir .
|
|
'/' .
|
|
$randomfile,
|
|
\layout Verbatim
|
|
|
|
'to' => 'attachments/actual_name.ext',
|
|
\layout Verbatim
|
|
|
|
'relatives' => array(
|
|
\layout Verbatim
|
|
|
|
RELATIVE_NONE|VFS_REAL,
|
|
\layout Verbatim
|
|
|
|
RELATIVE_USER
|
|
\layout Verbatim
|
|
|
|
)
|
|
\layout Verbatim
|
|
|
|
));
|
|
\layout Standard
|
|
|
|
$randomdir and $randomfile are what the directory and file might be called
|
|
before they are given a proper name by the user, which is actual_name.ext
|
|
in this example.
|
|
RELATIVE_NONE is the define for using full path names.
|
|
However, RELATIVE_NONE is still relative to the virtual root, so we pass
|
|
along VFS_REAL as well, to say that the file is
|
|
\emph on
|
|
outside
|
|
\emph default
|
|
the virtual root, somewhere else in the file system.
|
|
Once again, RELATIVE_USER means relative to the user's home directory.
|
|
So the actual file system call might look like this (keep in mind that
|
|
$randomdir and $randomfile are just random strings):
|
|
\layout Verbatim
|
|
|
|
rename ('/var/www/egroupware/tmp/0ak5adftgh7/jX42sC9M', '/var/www/egroupware
|
|
/files/home/jason/attachments/actual_name.ext');
|
|
\layout Standard
|
|
|
|
Of course you don't have to know that, nor should you be concerned with
|
|
it; you can take it for granted that the VFS will translate the paths correctly.
|
|
Let's take a look at one more example, this time using the RELATIVE_USER_APP
|
|
define.
|
|
RELATIVE_USER_APP is used to store quasi-hidden application files, similar
|
|
to the Unix convention of ~/.appname.
|
|
It simply appends .appname to the user's home directory.
|
|
For example, if you were making an HTML editor application named 'htmledit',
|
|
and wanted to keep a backup file in case something goes wrong, you could
|
|
use RELATIVE_USER_APP to store it:
|
|
\layout Verbatim
|
|
|
|
$GLOBALS['phpgw']->vfs->write (array(
|
|
\layout Verbatim
|
|
|
|
'string' => 'file.name~',
|
|
\layout Verbatim
|
|
|
|
'relatives' => array(
|
|
\layout Verbatim
|
|
|
|
RELATIVE_USER_APP
|
|
\layout Verbatim
|
|
|
|
),
|
|
\layout Verbatim
|
|
|
|
'content' => $contents
|
|
\layout Verbatim
|
|
|
|
));
|
|
\layout Standard
|
|
|
|
This assumes that ~/.htmledit exists of course.
|
|
The backup file
|
|
\begin_inset Quotes eld
|
|
\end_inset
|
|
|
|
file.name~
|
|
\begin_inset Quotes erd
|
|
\end_inset
|
|
|
|
would then be written in $fakebase/jason/.htmledit/file.name~.
|
|
Note that storing files like this might not be as good of a solution as
|
|
storing them in the temporary directory or in the database.
|
|
But it is there in case you need it.
|
|
\layout Subsection
|
|
|
|
Complete List
|
|
\begin_inset LatexCommand \label{sec:relatives_complete_list}
|
|
|
|
\end_inset
|
|
|
|
|
|
\layout Standard
|
|
|
|
Here is the complete list of RELATIVE defines, and what they do:
|
|
\layout Description
|
|
|
|
RELATIVE_ROOT Don't translate the path at all.
|
|
Just prepends a /.
|
|
You'll probably want to use RELATIVE_NONE though, which handles both virtual
|
|
and real files.
|
|
\layout Description
|
|
|
|
RELATIVE_USER User's home directory
|
|
\layout Description
|
|
|
|
RELATIVE_CURR_USER Current user's home directory.
|
|
If the current directory is $fakebase/my_group/project1, this will return
|
|
is $fakebase/my_group
|
|
\layout Description
|
|
|
|
RELATIVE_USER_APP Append .appname to the user's home directory, where appname
|
|
is the current application's appname
|
|
\layout Description
|
|
|
|
RELATIVE_PATH DO NOT USE.
|
|
Relative to the current directory, used in RELATIVE_ALL
|
|
\layout Description
|
|
|
|
RELATIVE_NONE Not relative to anything.
|
|
Use this with VFS_REAL for files outside the virtual root.
|
|
Note that using RELATIVE_NONE by itself still means relative to the virtual
|
|
root
|
|
\layout Description
|
|
|
|
RELATIVE_CURRENT An alias for the currently set RELATIVE define, or RELATIVE_ALL
|
|
if none is set (see the Defaults section)
|
|
\layout Description
|
|
|
|
VFS_REAL File is outside of the virtual root.
|
|
Usually used with RELATIVE_NONE
|
|
\layout Description
|
|
|
|
RELATIVE_ALL Relative to the current directory.
|
|
Use RELATIVE_ALL
|
|
\emph on
|
|
|
|
\emph default
|
|
instead of RELATIVE_PATH
|
|
\layout Subsection
|
|
|
|
Defaults
|
|
\begin_inset LatexCommand \label{sec:relatives_defaults}
|
|
|
|
\end_inset
|
|
|
|
|
|
\layout Standard
|
|
|
|
You might be thinking to yourself that passing along RELATIVE defines with
|
|
every VFS call is overkill, especially if your application always uses
|
|
the same relativity.
|
|
The default RELATIVE define for all VFS calls is RELATIVE_CURRENT.
|
|
RELATIVE_CURRENT itself defaults to RELATIVE_ALL (relative to the current
|
|
path),
|
|
\emph on
|
|
unless
|
|
\emph default
|
|
your application sets a specific relativity.
|
|
If your application requires most of the work to be done outside of the
|
|
virtual root, you may wish to set RELATIVE_CURRENT to RELATIVE_NONE|VFS_REAL.
|
|
set_relative () is the function to do this.
|
|
For example:
|
|
\layout Verbatim
|
|
|
|
$GLOBALS['phpgw']->vfs->set_relative (array(
|
|
\layout Verbatim
|
|
|
|
'mask' => RELATIVE_NONE|VFS_REAL
|
|
\layout Verbatim
|
|
|
|
));
|
|
\layout Verbatim
|
|
|
|
\layout Verbatim
|
|
|
|
$GLOBALS['phpgw']->vfs->read (array(
|
|
\layout Verbatim
|
|
|
|
'string' => '/etc/passwd'
|
|
\layout Verbatim
|
|
|
|
));
|
|
\layout Verbatim
|
|
|
|
\layout Verbatim
|
|
|
|
$GLOBALS['phpgw']->vfs->cp (array(
|
|
\layout Verbatim
|
|
|
|
'from' => '/usr/include/stdio.h',
|
|
\layout Verbatim
|
|
|
|
'to' => '/tmp/stdio.h'
|
|
\layout Verbatim
|
|
|
|
));
|
|
\layout Verbatim
|
|
|
|
\layout Verbatim
|
|
|
|
$GLOBALS['phpgw']->vfs->cp (array(
|
|
\layout Verbatim
|
|
|
|
'from' => '/usr/share/pixmaps/yes.xpm',
|
|
\layout Verbatim
|
|
|
|
'to' => 'icons/yes.xpm',
|
|
\layout Verbatim
|
|
|
|
'relatives' => array(
|
|
\layout Verbatim
|
|
|
|
RELATIVE_CURRENT,
|
|
\layout Verbatim
|
|
|
|
RELATIVE_USER
|
|
\layout Verbatim
|
|
|
|
)
|
|
\layout Verbatim
|
|
|
|
));
|
|
\layout Standard
|
|
|
|
You should notice that no relativity array is needed in the other calls
|
|
that refer to files outside the virtual root, but one is needed for calls
|
|
that include files inside the virtual root.
|
|
Any RELATIVE define can be set as the default and works in the same fashion.
|
|
To retrieve the currently set define, use get_relative ().
|
|
Note that the relativity is reset after each page request; that is, it's
|
|
good only for the life of the current page loading, and is not stored in
|
|
session management.
|
|
\layout Section
|
|
|
|
Function reference
|
|
\begin_inset LatexCommand \label{sec:function_reference}
|
|
|
|
\end_inset
|
|
|
|
|
|
\layout Standard
|
|
|
|
To view the function reference for the VFS, use the doc/inlinedocparser.php
|
|
script that comes with eGoupWare, ie
|
|
\begin_inset LatexCommand \url[http://localhost/doc/inlinedocparser.php?fn=class.vfs_sql.inc.php]{http://localhost/doc/inlinedocparser.php?fn=class.vfs_sql.inc.php}
|
|
|
|
\end_inset
|
|
|
|
.
|
|
\layout Section
|
|
|
|
Notes
|
|
\begin_inset LatexCommand \label{sec:notes}
|
|
|
|
\end_inset
|
|
|
|
|
|
\layout Subsection
|
|
|
|
Database
|
|
\begin_inset LatexCommand \label{sec:database}
|
|
|
|
\end_inset
|
|
|
|
|
|
\layout Standard
|
|
|
|
Data about the files and directories within the virtual root is kept in
|
|
the SQL database.
|
|
Currently, this information includes:
|
|
\layout Itemize
|
|
|
|
File ID (used internally, primary key for table)
|
|
\layout Itemize
|
|
|
|
Owner ID (phpGW account_id)
|
|
\layout Itemize
|
|
|
|
Created by ID (phpGW account_id)
|
|
\layout Itemize
|
|
|
|
Modified by ID (phpGW account_id)
|
|
\layout Itemize
|
|
|
|
Created (date)
|
|
\layout Itemize
|
|
|
|
Modified (date)
|
|
\layout Itemize
|
|
|
|
Size (bytes)
|
|
\layout Itemize
|
|
|
|
MIME type
|
|
\layout Itemize
|
|
|
|
Deleteable (Y/N/Other?)
|
|
\layout Itemize
|
|
|
|
Comment
|
|
\layout Itemize
|
|
|
|
App (appname of application that created the file)
|
|
\layout Itemize
|
|
|
|
Directory (directory the file or directory is in)
|
|
\layout Itemize
|
|
|
|
Name (name of file or directory)
|
|
\layout Itemize
|
|
|
|
Link directory (if the file or directory is linked, what the actual directory
|
|
is)
|
|
\layout Itemize
|
|
|
|
Link name (if the file or directory is linked, what the actual name is)
|
|
\layout Itemize
|
|
|
|
Version (numeric version of the file)
|
|
\layout Standard
|
|
|
|
The internal names of these (the database column names) are stored in the
|
|
$GLOBALS['phpgw']->vfs->attributes array, which is useful for loops, and
|
|
is guaranteed to be up-to-date.
|
|
\layout Standard
|
|
|
|
Note that no information is kept about files outside the virtual root.
|
|
If a file is moved outside, all records of it are deleted from the database
|
|
(other than the journaling records).
|
|
If a file is moved into the virtual root, some information, specifically
|
|
MIME-type, is not always stored in the database.
|
|
The vital information has defaults: owner is based on where the file is
|
|
being stored; size is correctly read; deleteable is set to Y.
|
|
\layout Subsection
|
|
|
|
ACL support
|
|
\begin_inset LatexCommand \label{sec:acl_support}
|
|
|
|
\end_inset
|
|
|
|
|
|
\layout Standard
|
|
|
|
ACL support is built into the VFS.
|
|
vfs->acl_check () does the actual checking, and is called from all VFS
|
|
functions as needed.
|
|
If the file or directory sent to acl_check () doesn't exist, the permissions
|
|
for the parent directory are used to determine access.
|
|
ACL checking can be overridden at any time by setting vfs->override_acl.
|
|
For example:
|
|
\layout Verbatim
|
|
|
|
$GLOBALS['phpgw']->vfs->override_acl = 1;
|
|
\layout Verbatim
|
|
|
|
$GLOBALS['phpgw']->vfs->mkdir (array(
|
|
\layout Verbatim
|
|
|
|
'string' => $GLOBALS['fakebase'].
|
|
'/' .
|
|
$group_array['account_name'],
|
|
\layout Verbatim
|
|
|
|
'relatives' => array(
|
|
\layout Verbatim
|
|
|
|
RELATIVE_NONE
|
|
\layout Verbatim
|
|
|
|
)
|
|
\layout Verbatim
|
|
|
|
));
|
|
\layout Verbatim
|
|
|
|
$GLOBALS['phpgw']->vfs->override_acl = 0;
|
|
\layout Subsection
|
|
|
|
Function aliases
|
|
\begin_inset LatexCommand \label{sec:function_aliases}
|
|
|
|
\end_inset
|
|
|
|
|
|
\layout Standard
|
|
|
|
You might have noticed there are some functions that just pass the arguments
|
|
on to other functions.
|
|
These are provided in part because of legacy and in part for convenience.
|
|
You can use either.
|
|
Here is the list (alias -> actual):
|
|
\layout Itemize
|
|
|
|
copy -> cp
|
|
\layout Itemize
|
|
|
|
move -> rm
|
|
\layout Itemize
|
|
|
|
delete -> rm
|
|
\layout Itemize
|
|
|
|
dir -> ls
|
|
\layout Subsection
|
|
|
|
Fakebase directory (changing /home)
|
|
\begin_inset LatexCommand \label{sec:fakebase}
|
|
|
|
\end_inset
|
|
|
|
|
|
\layout Standard
|
|
|
|
The old VFS was hard-coded to use '/home' as the fake base directory, even
|
|
though the user never saw it.
|
|
With the new system, crafty administrators may wish to change '/home' to
|
|
something else, say '/users' or '/public_html'.
|
|
The fake base directory name is stored in $GLOBALS['phpgw']->vfs->fakebase,
|
|
and changing it will transparently change it throughout the VFS and all
|
|
applications.
|
|
However, this must be done
|
|
\emph on
|
|
before
|
|
\emph default
|
|
any data is in the VFS database.
|
|
If you wish to change it afterwords, you'll have to manually update the
|
|
database, replacing the old value with the new value.
|
|
|
|
\emph on
|
|
Application programmers need to recognize that /home is not absolute, and
|
|
use $GLOBALS['phpgw']->vfs->fakebase instead
|
|
\emph default
|
|
.
|
|
I suggest setting $fakebase = $GLOBALS['phpgw']->vfs->fakebase; right off
|
|
the bat to keep things neater.
|
|
\layout Section
|
|
|
|
About this Document
|
|
\layout Subsection
|
|
|
|
Copyright and License
|
|
\layout Standard
|
|
|
|
Copyright (c) 2001, 2002 Jason Wies
|
|
\layout Standard
|
|
|
|
Permission is granted to copy, distribute and/or modify this document under
|
|
the terms of the GNU Free Documentation License, Version 1.1 or any later
|
|
version published by the Free Software Foundation; with no Invarient Sections,
|
|
with no Front-Cover Texts, and no Back-Cover Texts.
|
|
\layout Standard
|
|
|
|
A copy of the license is available at
|
|
\begin_inset LatexCommand \url[http://www.gnu.org/copyleft/fdl.html]{http://www.gnu.org/copyleft/fdl.html}
|
|
|
|
\end_inset
|
|
|
|
.
|
|
\layout Subsection
|
|
|
|
History
|
|
\layout Standard
|
|
|
|
Original document released in June 2001 by Jason Wies.
|
|
\layout Standard
|
|
|
|
Updated February 2002 to include arrayized parameters, single quotes, and
|
|
GLOBALS.
|
|
\layout Subsection
|
|
|
|
Contributing
|
|
\layout Standard
|
|
|
|
Contributions are always welcome.
|
|
Please send to the current maintainer, Jason Wies,
|
|
|
|
|
|
\end_inset
|
|
|
|
.
|
|
\the_end
|