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egroupware/phpgwapi/inc/class.vfs_shared.inc.php
raphaelpereira 252075f37a Classes for vfs sql implementation v2 
Responsible developer: viniciuscb (Vinicius Cubas Brand)
2004-10-27 23:34:21 +00:00

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<?php
/**************************************************************************\
* eGroupWare API - VFS base class *
* This file written by Jason Wies (Zone) <zone@phpgroupware.org> *
* This class handles file/dir access for eGroupWare *
* Copyright (C) 2001 Jason Wies *
* -------------------------------------------------------------------------*
* This library is part of the eGroupWare API *
* http://www.egroupware.org/api *
* ------------------------------------------------------------------------ *
* This library is free software; you can redistribute it and/or modify it *
* under the terms of the GNU Lesser General Public License as published by *
* the Free Software Foundation; either version 2.1 of the License, *
* or any later version. *
* This library is distributed in the hope that it will be useful, but *
* WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. *
* See the GNU Lesser General Public License for more details. *
* You should have received a copy of the GNU Lesser General Public License *
* along with this library; if not, write to the Free Software Foundation, *
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA *
\**************************************************************************/
/* $Id$ */
/* Relative defines. Used mainly by getabsolutepath () */
define ('RELATIVE_ROOT', 1);
define ('RELATIVE_USER', 2);
define ('RELATIVE_CURR_USER', 4);
define ('RELATIVE_USER_APP', 8);
define ('RELATIVE_PATH', 16);
define ('RELATIVE_NONE', 32);
define ('RELATIVE_CURRENT', 64);
define ('VFS_REAL', 1024);
define ('RELATIVE_ALL', RELATIVE_PATH);
/* These are used in calls to add_journal (), and allow journal messages to be more standard */
define ('VFS_OPERATION_CREATED', 1);
define ('VFS_OPERATION_EDITED', 2);
define ('VFS_OPERATION_EDITED_COMMENT', 4);
define ('VFS_OPERATION_COPIED', 8);
define ('VFS_OPERATION_MOVED', 16);
define ('VFS_OPERATION_DELETED', 32);
/*!
* @class path_class
* @abstract helper class for path_parts
*/
class path_class
{
var $mask;
var $outside;
var $fake_full_path;
var $fake_leading_dirs;
var $fake_extra_path;
var $fake_name;
var $real_full_path;
var $real_leading_dirs;
var $real_extra_path;
var $real_name;
var $fake_full_path_clean;
var $fake_leading_dirs_clean;
var $fake_extra_path_clean;
var $fake_name_clean;
var $real_full_path_clean;
var $real_leading_dirs_clean;
var $real_extra_path_clean;
var $real_name_clean;
}
/*!
* @class vfs_shared
* @abstract Base class for Virtual File System classes
* @author Zone
*/
class vfs_shared
{
/*
* All VFS classes must have some form of 'linked directories'.
* Linked directories allow an otherwise disparate "real" directory
* to be linked into the "virtual" filesystem. See make_link().
*/
var $linked_dirs = array ();
/*
* All VFS classes need to support the access control in some form
* (see acl_check()). There are times when applications will need
* to explictly disable access checking, for example when creating a
* user's home directory for the first time or when the admin is
* performing maintanence. When override_acl is set, any access
* checks must return True.
*/
var $override_acl = 0;
/*
* The current relativity. See set_relative() and get_relative().
*/
var $relative;
/*
* Implementation dependant 'base real directory'. It is not required
* that derived classes use $basedir, but some of the shared functions
* below rely on it, so those functions will need to be overload if
* basedir isn't appropriate for a particular backend.
*/
var $basedir;
/*
* Fake base directory. Only the administrator should change this.
*/
var $fakebase = '/home';
/*
* All derived classes must store certain information about each
* location. The attributes in the 'attributes' array represent
* the minimum attributes that must be stored. Derived classes
* should add to this array any custom attributes.
*
* Not all of the attributes below are appropriate for all backends.
* Those that don't apply can be replaced by dummy values, ie. '' or 0.
*/
var $attributes = array(
'file_id', /* Integer. Unique to each location */
'owner_id', /* phpGW account_id of owner */
'createdby_id', /* phpGW account_id of creator */
'modifiedby_id',/* phpGW account_id of who last modified */
'created', /* Datetime created, in SQL format */
'modified', /* Datetime last modified, in SQL format */
'size', /* Size in bytes */
'mime_type', /* Mime type. 'Directory' for directories */
'comment', /* User-supplied comment. Can be empty */
'app', /* Name of phpGW application responsible for location */
'directory', /* Directory location is in */
'name', /* Name of file/directory */
'link_directory', /* Directory location is linked to, if any */
'link_name', /* Name location is linked to, if any */
'version', /* Version of file. May be 0 */
);
/*!
* @function vfs_shared
* @abstract constructor
* @description All derived classes should call this function in their
* constructor ($this->vfs_shared())
*/
function vfs_shared ()
{
}
/*
* Definitions for functions that every derived
* class must have, and suggestions for private functions
* to completement the public ones. The prototypes for
* the public functions need to be uniform for all
* classes. Of course, each derived class should overload these
* functions with their own version.
*/
/*
* Journal functions.
*
* See also: VFS_OPERATION_* defines
*
* Overview:
* Each action performed on a location
* should be recorded, in both machine and human
* readable format.
*
* PRIVATE functions (suggested examples only, not mandatory):
*
* add_journal - Add journal entry
* flush_journal - Clear all journal entries for a location
*
* PUBLIC functions (mandatory):
*
* get_journal - Get journal entries for a location
*/
/* Private, suggestions only */
function add_journal ($data) {}
function flush_journal ($data) {}
/*!
* @function get_journal
* @abstract Get journal entries for a location
* @required string Path to location
* @optional relatives Relativity array (default: RELATIVE_CURRENT)
* @optional type [0|1|2]
* 0 = any journal entries
* 1 = current journal entries
* 2 = deleted journal entries
* @result Array of arrays of journal entries
* The keys will vary depending on the implementation,
* with most attributes in this->attributes being valid,
* and these keys being mandatory:
* created - Datetime in SQL format that journal entry
* was entered
* comment - Human readable comment describing the action
* version - May be 0 if the derived class does not support
* versioning
*/
function get_journal ($data) { return array(array()); }
/*
* Access checking functions.
*
* Overview:
* Each derived class should have some kind of
* user and group access control. This will
* usually be based directly on the ACL class.
*
* If $this->override_acl is set, acl_check()
* must always return True.
*
* PUBLIC functions (mandatory):
*
* acl_check() - Check access for a user to a given
*/
/*!
* @function acl_check
* @abstract Check access for a user to a given location
* @discussion If $this->override_acl is set, always return True
* @required string Path to location
* @optional relatives Relativity array (default: RELATIVE_CURRENT)
* @required operation Operation to check access for. Any combination
* of the PHPGW_ACL_* defines, for example:
* PHPGW_ACL_READ
* PHPGW_ACL_READ|PHPGW_ACL_WRITE
* @optional owner_id phpGW ID to check access for.
* Default: $GLOBALS['phpgw_info']['user']['account_id']
* @optional must_exist If set, string must exist, and acl_check() must
* return False if it doesn't. If must_exist isn't
* passed, and string doesn't exist, check the owner_id's
* access to the parent directory, if it exists.
* @result Boolean. True if access is ok, False otherwise.
*/
function acl_check ($data) { return True; }
/*
* Operations functions.
*
* Overview:
* These functions perform basic file operations.
*
* PUBLIC functions (mandatory):
*
* read - Retreive file contents
*
* write - Store file contents
*
* touch - Create a file if it doesn't exist.
* Optionally, update the modified time and
* modified user if the file exists.
*
* cp - Copy location
*
* mv - Move location
*
* rm - Delete location
*
* mkdir - Create directory
*/
/*!
* @function read
* @abstract Retreive file contents
* @required string Path to location
* @optional relatives Relativity array (default: RELATIVE_CURRENT)
* @result String. Contents of 'string', or False on error.
*/
function read ($data) { return False; }
/*!
@function view
@abstract Views the specified file (does not return!)
@param string filename
@param relatives Relativity array
@result None (doesnt return)
@discussion By default this function just reads the file and
outputs it too the browser, after setting the content-type header
appropriately. For some other VFS implementations though, there
may be some more sensible way of viewing the file.
*/
function view($data)
{
$default_values = array
(
'relatives' => array (RELATIVE_CURRENT)
);
$data = array_merge ($this->default_values ($data, $default_values), $data);
$GLOBALS['phpgw_info']['flags']['noheader'] = true;
$GLOBALS['phpgw_info']['flags']['nonavbar'] = true;
$GLOBALS['phpgw_info']['flags']['noappheader'] = true;
$GLOBALS['phpgw_info']['flags']['noappfooter'] = true;
$ls_array = $this->ls (array (
'string' => $data['string'],
'relatives' => $data['relatives'],
'checksubdirs' => False,
'nofiles' => True
)
);
if ($ls_array[0]['mime_type'])
{
$mime_type = $ls_array[0]['mime_type'];
}
elseif ($GLOBALS['settings']['viewtextplain'])
{
$mime_type = 'text/plain';
}
header('Content-type: ' . $mime_type);
echo $this->read (array (
'string' => $data['string'],
'relatives' => $data['relatives'],
)
);
exit();
}
/*!
* @function write
* @abstract Store file contents
* @required string Path to location
* @optional relatives Relativity array (default: RELATIVE_CURRENT)
* @result Boolean. True on success, False otherwise.
*/
function write ($data) { return False; }
/*!
* @function touch
* @abstract Create a file if it doesn't exist.
* Optionally, update the modified time and
* modified user if the file exists.
* @required string Path to location
* @optional relatives Relativity array (default: RELATIVE_CURRENT)
* @result Boolean. True on success, False otherwise.
*/
function touch ($data) { return False; }
/*!
* @function cp
* @abstract Copy location
* @required from Path to location to copy from
* @required to Path to location to copy to
* @optional relatives Relativity array (default: RELATIVE_CURRENT, RELATIVE_CURRENT)
* @result Boolean. True on success, False otherwise.
*/
function cp ($data) { return False; }
/*!
* @function mv
* @abstract Move location
* @required from Path to location to move from
* @required to Path to location to move to
* @optional relatives Relativity array (default: RELATIVE_CURRENT, RELATIVE_CURRENT)
* @result Boolean. True on success, False otherwise.
*/
function mv ($data) { return False; }
/*!
* @function rm
* @abstract Delete location
* @required string Path to location
* @optional relatives Relativity array (default: RELATIVE_CURRENT)
* @result Boolean. True on success, False otherwise.
*/
function rm ($data) { return False; }
/*!
* @function mkdir
* @abstract Create directory
* @required string Path to location
* @optional relatives Relativity array (default: RELATIVE_CURRENT)
* @result Boolean. True on success, False otherwise.
*/
function mkdir ($data) { return False; }
/*
* Information functions.
*
* Overview:
* These functions set or return information about locations.
*
* PUBLIC functions (mandatory):
*
* set_attributes - Set attributes for a location
*
* file_exists - Check if a location (file or directory) exists
*
* get_size - Determine size of location
*
* ls - Return detailed information for location(s)
*/
/*!
* @function set_attributes
* @abstract Set attributes for a location
* @discussion Valid attributes are listed in vfs->attributes,
* which may be extended by each derived class
* @required string Path to location
* @optional relatives Relativity array (default: RELATIVE_CURRENT)
* @optional attributes Keyed array of attributes. Key is attribute
* name, value is attribute value.
* @result Boolean. True on success, False otherwise.
*/
function set_attributes ($data) { return False; }
/*!
* @function file_exists
* @abstract Check if a location (file or directory) exists
* @required string Path to location
* @optional relatives Relativity array (default: RELATIVE_CURRENT)
* @result Boolean. True if file exists, False otherwise.
*/
function file_exists ($data) { return False; }
/*!
* @function get_size
* @abstract Determine size of location
* @required string Path to location
* @optional relatives Relativity array (default: RELATIVE_CURRENT)
* @optional checksubdirs Boolean. If set, include the size of
* all subdirectories recursively.
* @result Integer. Size of location in bytes.
*/
function get_size ($data) { return 0; }
/*!
* @function ls
* @abstract Return detailed information for location(s)
* @required string Path to location
* @optional relatives Relativity array (default: RELATIVE_CURRENT)
* @optional checksubdirs Boolean. If set, return information for all
* subdirectories recursively.
* @optional mime String. Only return information for locations with MIME type
* specified. VFS classes must recogize these special types:
* "Directory" - Location is a directory
* " " - Location doesn't not have a MIME type
* @optional nofiles Boolean. If set and 'string' is a directory, return
* information about the directory, not the files in it.
* @result Array of arrays of file information.
* Keys may vary depending on the implementation, but must include
* at least those attributes listed in $this->attributes.
*/
function ls ($data) { return array(array()); }
/*
* Linked directory functions.
*
* Overview:
* One 'special' feature that VFS classes must support
* is linking an otherwise unrelated 'real' directory into
* the virtual filesystem. For a traditional filesystem, this
* might mean linking /var/specialdir in the real filesystem to
* /home/user/specialdir in the VFS. For networked filesystems,
* this might mean linking 'another.host.com/dir' to
* 'this.host.com/home/user/somedir'.
*
* This is a feature that will be used mostly be administrators,
* in order to present a consistent view to users. Each VFS class
* will almost certainly need a new interface for the administrator
* to use to make links, but the concept is the same across all the
* VFS backends.
*
* Note that by using $this->linked_dirs in conjunction with
* $this->path_parts(), you can keep the implementation of linked
* directories very isolated in your code.
*
* PUBLIC functions (mandatory):
*
* make_link - Create a real to virtual directory link
*/
/*!
* @function make_link
* @abstract Create a real to virtual directory link
* @required rdir Real directory to make link from/to
* @required vdir Virtual directory to make link to/from
* @optional relatives Relativity array (default: RELATIVE_CURRENT, RELATIVE_CURRENT)
* @result Boolean. True on success, False otherwise.
*/
function make_link ($data) { return False; }
/*
* Miscellaneous functions.
*
* PUBLIC functions (mandatory):
*
* update_real - Ensure that information about a location is
* up-to-date
*
* compress - Archives a file or set of files in a compressed file
*
* extract - Dearchives a file or set of files of a compressed file
*/
/*!
* @function update_real
* @abstract Ensure that information about a location is up-to-date
* @discussion Some VFS backends store information about locations
* in a secondary location, for example in a database
* or in a cache file. update_real() can be called to
* ensure that the information in the secondary location
* is up-to-date.
* @required string Path to location
* @optional relatives Relativity array (default: RELATIVE_CURRENT)
* @result Boolean. True on success, False otherwise.
*/
function update_real ($data) { return False; }
/*!
* @function compress
* @abstract Creates an archive from a file or a set of files
* @required files File names to be stored in archive (array)
* @required name Name of archive
* @optional type The type of compression, can be 'zip'(default)or 'gz'
* @optional relatives Relativity array (default: RELATIVE_CURRENT)
* Note: the last item is the relativity of the dest archive
* @result Boolean. True on success, False otherwise.
*/
function compress ($data) { return False; }
/*!
* @function extract
* @abstract Extracts a file (or files) from archive
* @required name Name of archive
* @required dest The destination path of files to be extracted
* @optional type The type of compression, can be 'zip' or 'gz'. If
* not specified, uses according to the extension
* @optional files Files to be extracted from archive
* @optional relatives Relativity array (default: RELATIVE_CURRENT)
* Note: the first item is the relativity of the archive, the last of
* the dest dir
* @result Boolean. True on success, False otherwise.
*/
function extract ($data) { return False; }
/*
* SHARED FUNCTIONS
*
* The rest of the functions in this file are shared between
* all derived VFS classes.
*
* Derived classes can overload any of these functions if they
* see it fit to do so, as long as the prototypes and return
* values are the same for public functions, and the function
* accomplishes the same goal.
*
* PRIVATE functions:
*
* securitycheck - Check if location string is ok to use in VFS functions
*
* sanitize - Remove any possible security problems from a location
* string (i.e. remove leading '..')
*
* clean_string - Clean location string. This function is used if
* any special characters need to be escaped or removed
* before accessing a database, network protocol, etc.
* The default is to escape characters before doing an SQL
* query.
*
* getabsolutepath - Translate a location string depending on the
* relativity. This is the only function that is
* directly concerned with relativity.
*
* get_ext_mime_type - Return MIME type based on file extension
*
* PUBLIC functions (mandatory):
*
* set_relative - Sets the current relativity, the relativity used
* when RELATIVE_CURRENT is passed to a function
*
* get_relative - Return the current relativity
*
* path_parts - Return information about the component parts of a location string
*
* cd - Change current directory. This function is used to store the
* current directory in a standard way, so that it may be accessed
* throughout phpGroupWare to provide a consistent view for the user.
*
* pwd - Return current directory
*
* copy - Alias for cp
*
* move - Alias for mv
*
* delete - Alias for rm
*
* dir - Alias for ls
*
* command_line - Process and run a Unix-sytle command line
*
* compress - Archives a file or set of files in a compressed file
*
* extract - Dearchives a file or set of files of a compressed file
*/
/* PRIVATE functions */
/*!
* @function securitycheck
* @abstract Check if location string is ok to use in VFS functions
* @discussion Checks for basic violations such as ..
* If securitycheck () fails, run your string through $this->sanitize ()
* @required string Path to location
* @result Boolean. True if string is ok, False otherwise.
*/
function securitycheck ($data)
{
if (!is_array ($data))
{
$data = array ();
}
if (substr ($data['string'], 0, 1) == "\\" || strstr ($data['string'], "..") || strstr ($data['string'], "\\..") || strstr ($data['string'], ".\\."))
{
return False;
}
else
{
return True;
}
}
/*!
* @function sanitize
* @abstract Remove any possible security problems from a location
* string (i.e. remove leading '..')
* @discussion You should not pass all filenames through sanitize ()
* unless you plan on rejecting .files. Instead, pass
* the name through securitycheck () first, and if it fails,
* pass it through sanitize.
* @required string Path to location
* @result String. 'string' with any security problems fixed.
*/
function sanitize ($data)
{
if (!is_array ($data))
{
$data = array ();
}
/* We use path_parts () just to parse the string, not translate paths */
$p = $this->path_parts (array(
'string' => $data['string'],
'relatives' => array (RELATIVE_NONE)
)
);
return (ereg_replace ("^\.+", '', $p->fake_name));
}
/*!
* @function clean_string
* @abstract Clean location string. This function is used if
* any special characters need to be escaped or removed
* before accessing a database, network protocol, etc.
* The default is to escape characters before doing an SQL
* query.
* @required string Location string to clean
* @result String. Cleaned version of 'string'.
*/
function clean_string ($data)
{
if (!is_array ($data))
{
$data = array ();
}
$string = $GLOBALS['phpgw']->db->db_addslashes ($data['string']);
return $string;
}
/*!
* @function getabsolutepath
* @abstract Translate a location string depending on the
* relativity. This is the only function that is
* directly concerned with relativity.
* @optional string Path to location, relative to mask[0].
* Defaults to empty string.
* @optional mask Relativity array (default: RELATIVE_CURRENT)
* @optional fake Boolean. If set, returns the 'fake' path,
* i.e. /home/user/dir/file. This is not always
* possible, use path_parts() instead.
* @result String. Full fake or real path, or False on error.
*/
function getabsolutepath ($data)
{
if (!is_array ($data))
{
$data = array ();
}
$default_values = array
(
'string' => False,
'mask' => array (RELATIVE_CURRENT),
'fake' => True
);
$data = array_merge ($this->default_values ($data, $default_values), $data);
$currentdir = $this->pwd (False);
/* If they supply just VFS_REAL, we assume they want current relativity */
if ($data['mask'][0] == VFS_REAL)
{
$data['mask'][0] |= RELATIVE_CURRENT;
}
if (!$this->securitycheck (array(
'string' => $data['string']
))
)
{
return False;
}
if ($data['mask'][0] & RELATIVE_NONE)
{
return $data['string'];
}
if ($data['fake'])
{
$sep = '/';
}
else
{
$sep = SEP;
}
/* if RELATIVE_CURRENT, retrieve the current mask */
if ($data['mask'][0] & RELATIVE_CURRENT)
{
$mask = $data['mask'][0];
/* Respect any additional masks by re-adding them after retrieving the current mask*/
$data['mask'][0] = $this->get_relative () + ($mask - RELATIVE_CURRENT);
}
if ($data['fake'])
{
$basedir = "/";
}
else
{
$basedir = $this->basedir . $sep;
/* This allows all requests to use /'s */
$data['string'] = preg_replace ("|/|", $sep, $data['string']);
}
if (($data['mask'][0] & RELATIVE_PATH) && $currentdir)
{
$basedir = $basedir . $currentdir . $sep;
}
elseif (($data['mask'][0] & RELATIVE_USER) || ($data['mask'][0] & RELATIVE_USER_APP))
{
$basedir = $basedir . $this->fakebase . $sep;
}
if ($data['mask'][0] & RELATIVE_CURR_USER)
{
$basedir = $basedir . $this->working_lid . $sep;
}
if (($data['mask'][0] & RELATIVE_USER) || ($data['mask'][0] & RELATIVE_USER_APP))
{
$basedir = $basedir . $GLOBALS['phpgw_info']['user']['account_lid'] . $sep;
}
if ($data['mask'][0] & RELATIVE_USER_APP)
{
$basedir = $basedir . "." . $GLOBALS['phpgw_info']['flags']['currentapp'] . $sep;
}
/* Don't add string if it's a /, just for aesthetics */
if ($data['string'] && $data['string'] != $sep)
{
$basedir = $basedir . $data['string'];
}
/* Let's not return // */
while (ereg ($sep . $sep, $basedir))
{
$basedir = ereg_replace ($sep . $sep, $sep, $basedir);
}
$basedir = ereg_replace ($sep . '$', '', $basedir);
return $basedir;
}
/*!
* @function get_ext_mime_type
* @abstract Return MIME type based on file extension
* @description Internal use only. Applications should call vfs->file_type ()
* @author skeeter
* @required string Real path to file, with or without leading paths
* @result String. MIME type based on file extension.
*/
function get_ext_mime_type ($data)
{
if (!is_array ($data))
{
$data = array ();
}
$file=basename($data['string']);
$mimefile=PHPGW_API_INC.'/phpgw_mime.types';
$fp=fopen($mimefile,'r');
$contents = explode("\n",fread($fp,filesize($mimefile)));
fclose($fp);
$parts=explode('.',strtolower($file));
$ext=$parts[(sizeof($parts)-1)];
for($i=0;$i<sizeof($contents);$i++)
{
if (!ereg("^#",$contents[$i]))
{
$line=split("[[:space:]]+", $contents[$i]);
if (sizeof($line) >= 2)
{
for($j=1;$j<sizeof($line);$j++)
{
if($line[$j] == $ext)
{
return $line[0];
}
}
}
}
}
return '';
}
/* PUBLIC functions (mandatory) */
/*!
* @function set_relative
* @abstract Sets the current relativity, the relativity used
* when RELATIVE_CURRENT is passed to a function
* @optional mask Relative bitmask. If not set, relativity
* will be returned to the default.
* @result Void
*/
function set_relative ($data)
{
if (!is_array ($data))
{
$data = array ();
}
if (!$data['mask'])
{
unset ($this->relative);
}
else
{
$this->relative = $data['mask'];
}
}
/*!
* @function get_relative
* @abstract Return the current relativity
* @discussion Returns relativity bitmask, or the default
* of "completely relative" if unset
* @result Integer. One of the RELATIVE_* defines.
*/
function get_relative ()
{
if (isset ($this->relative) && $this->relative)
{
return $this->relative;
}
else
{
return RELATIVE_ALL;
}
}
/*!
* @function path_parts
* @abstract Return information about the component parts of a location string
* @discussion Most VFS functions call path_parts() with their 'string' and
* 'relatives' arguments before doing their work, in order to
* determine the file/directory to work on.
* @required string Path to location
* @optional relatives Relativity array (default: RELATIVE_CURRENT)
* @optional object If set, return an object instead of an array
* @optional nolinks Don't check for linked directories (made with
* make_link()). Used internally to prevent recursion.
* @result Array or object. Contains the fake and real component parts of the path.
* @discussion Returned values are:
* mask
* outside
* fake_full_path
* fake_leading_dirs
* fake_extra_path BROKEN
* fake_name
* real_full_path
* real_leading_dirs
* real_extra_path BROKEN
* real_name
* fake_full_path_clean
* fake_leading_dirs_clean
* fake_extra_path_clean BROKEN
* fake_name_clean
* real_full_path_clean
* real_leading_dirs_clean
* real_extra_path_clean BROKEN
* real_name_clean
* "clean" values are run through vfs->clean_string () and
* are safe for use in SQL queries that use key='value'
* They should be used ONLY for SQL queries, so are used
* mostly internally
* mask is either RELATIVE_NONE or RELATIVE_NONE|VFS_REAL,
* and is used internally
* outside is boolean, True if 'relatives' contains VFS_REAL
*/
function path_parts ($data)
{
if (!is_array ($data))
{
$data = array ();
}
$default_values = array
(
'relatives' => array (RELATIVE_CURRENT),
'object' => True,
'nolinks' => False
);
$data = array_merge ($this->default_values ($data, $default_values), $data);
$sep = SEP;
$rarray['mask'] = RELATIVE_NONE;
if (!($data['relatives'][0] & VFS_REAL))
{
$rarray['outside'] = False;
$fake = True;
}
else
{
$rarray['outside'] = True;
$rarray['mask'] |= VFS_REAL;
}
$string = $this->getabsolutepath (array(
'string' => $data['string'],
'mask' => array ($data['relatives'][0]),
'fake' => $fake
)
);
if ($fake)
{
$base_sep = '/';
$base = '/';
$opp_base = $this->basedir . $sep;
$rarray['fake_full_path'] = $string;
}
else
{
$base_sep = $sep;
if (substr($string,0,strlen($this->basedir)+1) == $this->basedir . $sep)
{
$base = $this->basedir . $sep;
}
else
{
$base = $sep;
}
$opp_base = '/';
$rarray['real_full_path'] = $string;
}
/* This is needed because of substr's handling of negative lengths */
$baselen = strlen ($base);
$lastslashpos = @strrpos ($string, $base_sep);
$length = $lastslashpos < $baselen ? 0 : $lastslashpos - $baselen;
$extra_path = $rarray['fake_extra_path'] = $rarray['real_extra_path'] = substr ($string, strlen ($base), $length);
if($string[1] != ':')
{
$name = $rarray['fake_name'] = $rarray['real_name'] = substr ($string, @strrpos ($string, $base_sep) + 1);
}
else
{
$name = $rarray['fake_name'] = $rarray['real_name'] = $string;
}
if ($fake)
{
$rarray['real_extra_path'] ? $dispsep = $sep : $dispsep = '';
$rarray['real_full_path'] = $opp_base . $rarray['real_extra_path'] . $dispsep . $rarray['real_name'];
if ($extra_path)
{
$rarray['fake_leading_dirs'] = $base . $extra_path;
$rarray['real_leading_dirs'] = $opp_base . $extra_path;
}
elseif (@strrpos ($rarray['fake_full_path'], $sep) == 0)
{
/* If there is only one $sep in the path, we don't want to strip it off */
$rarray['fake_leading_dirs'] = $sep;
$rarray['real_leading_dirs'] = substr ($opp_base, 0, strlen ($opp_base) - 1);
}
else
{
/* These strip the ending / */
$rarray['fake_leading_dirs'] = substr ($base, 0, strlen ($base) - 1);
$rarray['real_leading_dirs'] = substr ($opp_base, 0, strlen ($opp_base) - 1);
}
}
else
{
if($rarray['fake_name'][1] != ':')
{
$rarray['fake_full_path'] = $opp_base . $rarray['fake_extra_path'] . '/' . $rarray['fake_name'];
}
else
{
$rarray['fake_full_path'] = $rarray['fake_name'];
}
if ($extra_path)
{
$rarray['fake_leading_dirs'] = $opp_base . $extra_path;
$rarray['real_leading_dirs'] = $base . $extra_path;
}
else
{
$rarray['fake_leading_dirs'] = substr ($opp_base, 0, strlen ($opp_base) - 1);
$rarray['real_leading_dirs'] = substr ($base, 0, strlen ($base) - 1);
}
}
/* We check for linked dirs made with make_link (). This could be better, but it works */
if (!$data['nolinks'])
{
reset ($this->linked_dirs);
while (list ($num, $link_info) = each ($this->linked_dirs))
{
if (ereg ("^$link_info[directory]/$link_info[name](/|$)", $rarray['fake_full_path']))
{
$rarray['real_full_path'] = ereg_replace ("^$this->basedir", '', $rarray['real_full_path']);
$rarray['real_full_path'] = ereg_replace ("^$link_info[directory]" . SEP . "$link_info[name]", $link_info['link_directory'] . SEP . $link_info['link_name'], $rarray['real_full_path']);
$p = $this->path_parts (array(
'string' => $rarray['real_full_path'],
'relatives' => array (RELATIVE_NONE|VFS_REAL),
'nolinks' => True
)
);
$rarray['real_leading_dirs'] = $p->real_leading_dirs;
$rarray['real_extra_path'] = $p->real_extra_path;
$rarray['real_name'] = $p->real_name;
}
}
}
/*
We have to count it before because new keys will be added,
which would create an endless loop
*/
$count = count ($rarray);
reset ($rarray);
for ($i = 0; (list ($key, $value) = each ($rarray)) && $i != $count; $i++)
{
$rarray[$key . '_clean'] = $this->clean_string (array ('string' => $value));
}
if ($data['object'])
{
$robject = new path_class;
reset ($rarray);
while (list ($key, $value) = each ($rarray))
{
$robject->$key = $value;
}
}
/*
echo "<br>fake_full_path: $rarray[fake_full_path]
<br>fake_leading_dirs: $rarray[fake_leading_dirs]
<br>fake_extra_path: $rarray[fake_extra_path]
<br>fake_name: $rarray[fake_name]
<br>real_full_path: $rarray[real_full_path]
<br>real_leading_dirs: $rarray[real_leading_dirs]
<br>real_extra_path: $rarray[real_extra_path]
<br>real_name: $rarray[real_name]";
*/
if ($data['object'])
{
return ($robject);
}
else
{
return ($rarray);
}
}
/*!
* @function cd
* @abstract Change current directory. This function is used to store the
* current directory in a standard way, so that it may be accessed
* throughout phpGroupWare to provide a consistent view for the user.
* @discussion To cd to the root '/', use:
* cd (array(
* 'string' => '/',
* 'relative' => False,
* 'relatives' => array (RELATIVE_NONE)
* ));
* @optional string Directory location to cd into. Default is '/'.
* @optional relative If set, add target to current path.
* Else, pass 'relative' as mask to getabsolutepath()
* Default is True.
* @optional relatives Relativity array (default: RELATIVE_CURRENT)
*/
function cd ($data = '')
{
if (!is_array ($data))
{
$noargs = 1;
$data = array ();
}
$default_values = array
(
'string' => '/',
'relative' => True,
'relatives' => array (RELATIVE_CURRENT)
);
$data = array_merge ($this->default_values ($data, $default_values), $data);
if ($data['relatives'][0] & VFS_REAL)
{
$sep = SEP;
}
else
{
$sep = '/';
}
if ($data['relative'] == 'relative' || $data['relative'] == True)
{
/* if 'string' is "/" and 'relative' is set, we cd to the user/group home dir */
if ($data['string'] == '/')
{
$data['relatives'][0] = RELATIVE_USER;
$basedir = $this->getabsolutepath (array(
'string' => False,
'mask' => array ($data['relatives'][0]),
'fake' => True
)
);
}
else
{
$currentdir = $GLOBALS['phpgw']->session->appsession('vfs','');
$basedir = $this->getabsolutepath (array(
'string' => $currentdir . $sep . $data['string'],
'mask' => array ($data['relatives'][0]),
'fake' => True
)
);
}
}
else
{
$basedir = $this->getabsolutepath (array(
'string' => $data['string'],
'mask' => array ($data['relatives'][0])
)
);
}
$GLOBALS['phpgw']->session->appsession('vfs','',$basedir);
return True;
}
/*!
* @function pwd
* @abstract Return current directory
* @optional full If set, return full fake path, else just
* the extra dirs (False strips the leading /).
* Default is True.
* @result String. The current directory.
*/
function pwd ($data = '')
{
if (!is_array ($data))
{
$data = array ();
}
$default_values = array
(
'full' => True
);
$data = array_merge ($this->default_values ($data, $default_values), $data);
$currentdir = $GLOBALS['phpgw']->session->appsession('vfs','');
if (!$data['full'])
{
$currentdir = ereg_replace ("^/", '', $currentdir);
}
if ($currentdir == '' && $data['full'])
{
$currentdir = '/';
}
$currentdir = trim ($currentdir);
return $currentdir;
}
/*!
* @function copy
* @abstract shortcut to cp
*/
function copy ($data)
{
return $this->cp ($data);
}
/*!
* @function move
* @abstract shortcut to mv
*/
function move ($data)
{
return $this->mv ($data);
}
/*!
* @function delete
* @abstract shortcut to rm
*/
function delete ($data)
{
return $this->rm ($data);
}
/*!
* @function dir
* @abstract shortcut to ls
*/
function dir ($data)
{
return $this->ls ($data);
}
/*!
* @function command_line
* @abstract Process and run a Unix-sytle command line
* @discussion EXPERIMENTAL. DANGEROUS. DO NOT USE THIS UNLESS YOU
* KNOW WHAT YOU'RE DOING!
* This is mostly working, but the command parser needs
* to be improved to take files with spaces into
* consideration (those should be in "").
* @required command_line Unix-style command line with one of the
* commands in the $args array
* @result The return value of the actual VFS call
*/
function command_line ($data)
{
if (!is_array ($data))
{
$data = array ();
}
$args = array
(
array ('name' => 'mv', 'params' => 2),
array ('name' => 'cp', 'params' => 2),
array ('name' => 'rm', 'params' => 1),
array ('name' => 'ls', 'params' => -1),
array ('name' => 'du', 'params' => 1, 'func' => get_size),
array ('name' => 'cd', 'params' => 1),
array ('name' => 'pwd', 'params' => 0),
array ('name' => 'cat', 'params' => 1, 'func' => read),
array ('name' => 'file', 'params' => 1, 'func' => file_type),
array ('name' => 'mkdir', 'params' => 1),
array ('name' => 'touch', 'params' => 1)
);
if (!$first_space = strpos ($data['command_line'], ' '))
{
$first_space = strlen ($data['command_line']);
}
if ((!$last_space = strrpos ($data['command_line'], ' ')) || ($last_space == $first_space))
{
$last_space = strlen ($data['command_line']) + 1;
}
$argv[0] = substr ($data['command_line'], 0, $first_space);
if (strlen ($argv[0]) != strlen ($data['command_line']))
{
$argv[1] = substr ($data['command_line'], $first_space + 1, $last_space - ($first_space + 1));
if ((strlen ($argv[0]) + 1 + strlen ($argv[1])) != strlen ($data['command_line']))
{
$argv[2] = substr ($data['command_line'], $last_space + 1);
}
}
$argc = count ($argv);
reset ($args);
while (list (,$arg_info) = each ($args))
{
if ($arg_info['name'] == $argv[0])
{
$command_ok = 1;
if (($argc == ($arg_info['params'] + 1)) || ($arg_info['params'] == -1))
{
$param_count_ok = 1;
}
break;
}
}
if (!$command_ok)
{
// return E_VFS_BAD_COMMAND;
return False;
}
if (!$param_count_ok)
{
// return E_VFS_BAD_PARAM_COUNT;
return False;
}
for ($i = 1; $i != ($arg_info['params'] + 1); $i++)
{
if (substr ($argv[$i], 0, 1) == "/")
{
$relatives[] = RELATIVE_NONE;
}
else
{
$relatives[] = RELATIVE_ALL;
}
}
$func = $arg_info['func'] ? $arg_info['func'] : $arg_info['name'];
if (!$argv[2])
{
$rv = $this->$func (array(
'string' => $argv[1],
'relatives' => $relatives
)
);
}
else
{
$rv = $this->$func (array(
'from' => $argv[1],
'to' => $argv[2],
'relatives' => $relatives
)
);
}
return ($rv);
}
/* Helper functions, not public */
function default_values ($data, $default_values)
{
for ($i = 0; list ($key, $value) = each ($default_values); $i++)
{
if (!isset ($data[$key]))
{
$data[$key] = $value;
}
}
return $data;
}
}
?>
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