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LICENSE000064400000042630151170271460005562 0ustar00GNU GENERAL PUBLIC
LICENSE
				Version 2, June 1991

 Copyright (C) 1989, 1991 Free Software Foundation, Inc.
 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.

				Preamble

  The licenses for most software are designed to take away your
freedom to share and change it.  By contrast, the GNU General Public
License is intended to guarantee your freedom to share and change free
software--to make sure the software is free for all its users.  This
General Public License applies to most of the Free Software
Foundation's software and to any other program whose authors commit to
using it.  (Some other Free Software Foundation software is covered by
the GNU Library General Public License instead.)  You can apply it to
your programs, too.

  When we speak of free software, we are referring to freedom, not
price.  Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
this service if you wish), that you receive source code or can get it
if you want it, that you can change the software or use pieces of it
in new free programs; and that you know you can do these things.

  To protect your rights, we need to make restrictions that forbid
anyone to deny you these rights or to ask you to surrender the rights.
These restrictions translate to certain responsibilities for you if you
distribute copies of the software, or if you modify it.

  For example, if you distribute copies of such a program, whether
gratis or for a fee, you must give the recipients all the rights that
you have.  You must make sure that they, too, receive or can get the
source code.  And you must show them these terms so they know their
rights.

  We protect your rights with two steps: (1) copyright the software, and
(2) offer you this license which gives you legal permission to copy,
distribute and/or modify the software.

  Also, for each author's protection and ours, we want to make certain
that everyone understands that there is no warranty for this free
software.  If the software is modified by someone else and passed on, we
want its recipients to know that what they have is not the original, so
that any problems introduced by others will not reflect on the original
authors' reputations.

  Finally, any free program is threatened constantly by software
patents.  We wish to avoid the danger that redistributors of a free
program will individually obtain patent licenses, in effect making the
program proprietary.  To prevent this, we have made it clear that any
patent must be licensed for everyone's free use or not licensed at
all.

  The precise terms and conditions for copying, distribution and
modification follow.

			GNU GENERAL PUBLIC LICENSE
   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

  0. This License applies to any program or other work which contains
a notice placed by the copyright holder saying it may be distributed
under the terms of this General Public License.  The "Program",
below,
refers to any such program or work, and a "work based on the
Program"
means either the Program or any derivative work under copyright law:
that is to say, a work containing the Program or a portion of it,
either verbatim or with modifications and/or translated into another
language.  (Hereinafter, translation is included without limitation in
the term "modification".)  Each licensee is addressed as
"you".

Activities other than copying, distribution and modification are not
covered by this License; they are outside its scope.  The act of
running the Program is not restricted, and the output from the Program
is covered only if its contents constitute a work based on the
Program (independent of having been made by running the Program).
Whether that is true depends on what the Program does.

  1. You may copy and distribute verbatim copies of the Program's
source code as you receive it, in any medium, provided that you
conspicuously and appropriately publish on each copy an appropriate
copyright notice and disclaimer of warranty; keep intact all the
notices that refer to this License and to the absence of any warranty;
and give any other recipients of the Program a copy of this License
along with the Program.

You may charge a fee for the physical act of transferring a copy, and
you may at your option offer warranty protection in exchange for a fee.

  2. You may modify your copy or copies of the Program or any portion
of it, thus forming a work based on the Program, and copy and
distribute such modifications or work under the terms of Section 1
above, provided that you also meet all of these conditions:

	a) You must cause the modified files to carry prominent notices
	stating that you changed the files and the date of any change.

	b) You must cause any work that you distribute or publish, that in
	whole or in part contains or is derived from the Program or any
	part thereof, to be licensed as a whole at no charge to all third
	parties under the terms of this License.

	c) If the modified program normally reads commands interactively
	when run, you must cause it, when started running for such
	interactive use in the most ordinary way, to print or display an
	announcement including an appropriate copyright notice and a
	notice that there is no warranty (or else, saying that you provide
	a warranty) and that users may redistribute the program under
	these conditions, and telling the user how to view a copy of this
	License.  (Exception: if the Program itself is interactive but
	does not normally print such an announcement, your work based on
	the Program is not required to print an announcement.)

These requirements apply to the modified work as a whole.  If
identifiable sections of that work are not derived from the Program,
and can be reasonably considered independent and separate works in
themselves, then this License, and its terms, do not apply to those
sections when you distribute them as separate works.  But when you
distribute the same sections as part of a whole which is a work based
on the Program, the distribution of the whole must be on the terms of
this License, whose permissions for other licensees extend to the
entire whole, and thus to each and every part regardless of who wrote it.

Thus, it is not the intent of this section to claim rights or contest
your rights to work written entirely by you; rather, the intent is to
exercise the right to control the distribution of derivative or
collective works based on the Program.

In addition, mere aggregation of another work not based on the Program
with the Program (or with a work based on the Program) on a volume of
a storage or distribution medium does not bring the other work under
the scope of this License.

  3. You may copy and distribute the Program (or a work based on it,
under Section 2) in object code or executable form under the terms of
Sections 1 and 2 above provided that you also do one of the following:

	a) Accompany it with the complete corresponding machine-readable
	source code, which must be distributed under the terms of Sections
	1 and 2 above on a medium customarily used for software interchange; or,

	b) Accompany it with a written offer, valid for at least three
	years, to give any third party, for a charge no more than your
	cost of physically performing source distribution, a complete
	machine-readable copy of the corresponding source code, to be
	distributed under the terms of Sections 1 and 2 above on a medium
	customarily used for software interchange; or,

	c) Accompany it with the information you received as to the offer
	to distribute corresponding source code.  (This alternative is
	allowed only for noncommercial distribution and only if you
	received the program in object code or executable form with such
	an offer, in accord with Subsection b above.)

The source code for a work means the preferred form of the work for
making modifications to it.  For an executable work, complete source
code means all the source code for all modules it contains, plus any
associated interface definition files, plus the scripts used to
control compilation and installation of the executable.  However, as a
special exception, the source code distributed need not include
anything that is normally distributed (in either source or binary
form) with the major components (compiler, kernel, and so on) of the
operating system on which the executable runs, unless that component
itself accompanies the executable.

If distribution of executable or object code is made by offering
access to copy from a designated place, then offering equivalent
access to copy the source code from the same place counts as
distribution of the source code, even though third parties are not
compelled to copy the source along with the object code.

  4. You may not copy, modify, sublicense, or distribute the Program
except as expressly provided under this License.  Any attempt
otherwise to copy, modify, sublicense or distribute the Program is
void, and will automatically terminate your rights under this License.
However, parties who have received copies, or rights, from you under
this License will not have their licenses terminated so long as such
parties remain in full compliance.

  5. You are not required to accept this License, since you have not
signed it.  However, nothing else grants you permission to modify or
distribute the Program or its derivative works.  These actions are
prohibited by law if you do not accept this License.  Therefore, by
modifying or distributing the Program (or any work based on the
Program), you indicate your acceptance of this License to do so, and
all its terms and conditions for copying, distributing or modifying
the Program or works based on it.

  6. Each time you redistribute the Program (or any work based on the
Program), the recipient automatically receives a license from the
original licensor to copy, distribute or modify the Program subject to
these terms and conditions.  You may not impose any further
restrictions on the recipients' exercise of the rights granted herein.
You are not responsible for enforcing compliance by third parties to
this License.

  7. If, as a consequence of a court judgment or allegation of patent
infringement or for any other reason (not limited to patent issues),
conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License.  If you cannot
distribute so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you
may not distribute the Program at all.  For example, if a patent
license would not permit royalty-free redistribution of the Program by
all those who receive copies directly or indirectly through you, then
the only way you could satisfy both it and this License would be to
refrain entirely from distribution of the Program.

If any portion of this section is held invalid or unenforceable under
any particular circumstance, the balance of the section is intended to
apply and the section as a whole is intended to apply in other
circumstances.

It is not the purpose of this section to induce you to infringe any
patents or other property right claims or to contest validity of any
such claims; this section has the sole purpose of protecting the
integrity of the free software distribution system, which is
implemented by public license practices.  Many people have made
generous contributions to the wide range of software distributed
through that system in reliance on consistent application of that
system; it is up to the author/donor to decide if he or she is willing
to distribute software through any other system and a licensee cannot
impose that choice.

This section is intended to make thoroughly clear what is believed to
be a consequence of the rest of this License.

  8. If the distribution and/or use of the Program is restricted in
certain countries either by patents or by copyrighted interfaces, the
original copyright holder who places the Program under this License
may add an explicit geographical distribution limitation excluding
those countries, so that distribution is permitted only in or among
countries not thus excluded.  In such case, this License incorporates
the limitation as if written in the body of this License.

  9. The Free Software Foundation may publish revised and/or new versions
of the General Public License from time to time.  Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.

Each version is given a distinguishing version number.  If the Program
specifies a version number of this License which applies to it and
"any
later version", you have the option of following the terms and
conditions
either of that version or of any later version published by the Free
Software Foundation.  If the Program does not specify a version number of
this License, you may choose any version ever published by the Free
Software
Foundation.

  10. If you wish to incorporate parts of the Program into other free
programs whose distribution conditions are different, write to the author
to ask for permission.  For software which is copyrighted by the Free
Software Foundation, write to the Free Software Foundation; we sometimes
make exceptions for this.  Our decision will be guided by the two goals
of preserving the free status of all derivatives of our free software and
of promoting the sharing and reuse of software generally.

				NO WARRANTY

  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER
EXPRESSED
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
REPAIR OR CORRECTION.

  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.

			 END OF TERMS AND CONDITIONS

		How to Apply These Terms to Your New Programs

  If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.

  To do so, attach the following notices to the program.  It is safest
to attach them to the start of each source file to most effectively
convey the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is
found.

	<one line to give the program's name and a brief idea of what it
does.>
	Copyright (C) <year>  <name of author>

	This program is free software; you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation; either version 2 of the License, or
	(at your option) any later version.

	This program 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 General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with this program; if not, write to the Free Software
	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA


Also add information on how to contact you by electronic and paper mail.

If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:

	Gnomovision version 69, Copyright (C) year name of author
	Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show
w'.
	This is free software, and you are welcome to redistribute it
	under certain conditions; type `show c' for details.

The hypothetical commands `show w' and `show c' should show the
appropriate
parts of the General Public License.  Of course, the commands you use may
be called something other than `show w' and `show c'; they could
even be
mouse-clicks or menu items--whatever suits your program.

You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program,
if
necessary.  Here is a sample; alter the names:

  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
  `Gnomovision' (which makes passes at compilers) written by James
Hacker.

  <signature of Ty Coon>, 1 April 1989
  Ty Coon, President of Vice

This General Public License does not permit incorporating your program into
proprietary programs.  If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library.  If this is what you want to do, use the GNU Library General
Public License instead of this License.
meta/language/en-GB/en-GB.lib_joomla_filesystem_patcher.ini000064400000001322151170271470017621
0ustar00; Joomla! Project
; Copyright (C) 2005 - 2016 Open Source Matters. All rights reserved.
; License GNU General Public License version 2 or later; see LICENSE.txt
; Note : All ini files need to be saved as UTF-8 - No BOM

JLIB_FILESYSTEM_PATCHER_FAILED_VERIFY="Failed source verification of
file %s at line %d"
JLIB_FILESYSTEM_PATCHER_INVALID_DIFF="Invalid unified diff block"
JLIB_FILESYSTEM_PATCHER_INVALID_INPUT="Invalid input"
JLIB_FILESYSTEM_PATCHER_UNEXISTING_SOURCE="Unexisting source
file"
JLIB_FILESYSTEM_PATCHER_UNEXPECTED_ADD_LINE="Unexpected add line at
line %d'"
JLIB_FILESYSTEM_PATCHER_UNEXPECTED_EOF="Unexpected end of file"
JLIB_FILESYSTEM_PATCHER_UNEXPECTED_REMOVE_LINE="Unexpected remove line
at line %d"

src/Buffer.php000064400000010150151170271470007257 0ustar00<?php
/**
 * Part of the Joomla Framework Filesystem Package
 *
 * @copyright  Copyright (C) 2005 - 2020 Open Source Matters, Inc. All
rights reserved.
 * @license    GNU General Public License version 2 or later; see LICENSE
 */

namespace Joomla\Filesystem;

/**
 * Generic Buffer stream handler
 *
 * This class provides a generic buffer stream.  It can be used to
store/retrieve/manipulate
 * string buffers with the standard PHP filesystem I/O methods.
 *
 * @since  1.0
 */
class Buffer
{
	/**
	 * Stream position
	 *
	 * @var    integer
	 * @since  1.0
	 */
	public $position = 0;

	/**
	 * Buffer name
	 *
	 * @var    string
	 * @since  1.0
	 */
	public $name;

	/**
	 * Buffer hash
	 *
	 * @var    array
	 * @since  1.0
	 */
	public $buffers = array();

	/**
	 * Function to open file or url
	 *
	 * @param   string   $path        The URL that was passed
	 * @param   string   $mode        Mode used to open the file @see fopen
	 * @param   integer  $options     Flags used by the API, may be
STREAM_USE_PATH and STREAM_REPORT_ERRORS
	 * @param   string   $openedPath  Full path of the resource. Used with
STREAN_USE_PATH option
	 *
	 * @return  boolean
	 *
	 * @since   1.0
	 * @see     streamWrapper::stream_open
	 */
	public function stream_open($path, $mode, $options, &$openedPath)
	{
		$url                        = parse_url($path);
		$this->name                 = $url['host'];
		$this->buffers[$this->name] = null;
		$this->position             = 0;

		return true;
	}

	/**
	 * Read stream
	 *
	 * @param   integer  $count  How many bytes of data from the current
position should be returned.
	 *
	 * @return  mixed    The data from the stream up to the specified number
of bytes (all data if
	 *                   the total number of bytes in the stream is less than
$count. Null if
	 *                   the stream is empty.
	 *
	 * @see     streamWrapper::stream_read
	 * @since   1.0
	 */
	public function stream_read($count)
	{
		$ret = substr($this->buffers[$this->name], $this->position,
$count);
		$this->position += \strlen($ret);

		return $ret;
	}

	/**
	 * Write stream
	 *
	 * @param   string  $data  The data to write to the stream.
	 *
	 * @return  integer
	 *
	 * @see     streamWrapper::stream_write
	 * @since   1.0
	 */
	public function stream_write($data)
	{
		$left                       = substr($this->buffers[$this->name],
0, $this->position);
		$right                      = substr($this->buffers[$this->name],
$this->position + \strlen($data));
		$this->buffers[$this->name] = $left . $data . $right;
		$this->position += \strlen($data);

		return \strlen($data);
	}

	/**
	 * Function to get the current position of the stream
	 *
	 * @return  integer
	 *
	 * @see     streamWrapper::stream_tell
	 * @since   1.0
	 */
	public function stream_tell()
	{
		return $this->position;
	}

	/**
	 * Function to test for end of file pointer
	 *
	 * @return  boolean  True if the pointer is at the end of the stream
	 *
	 * @see     streamWrapper::stream_eof
	 * @since   1.0
	 */
	public function stream_eof()
	{
		return $this->position >=
\strlen($this->buffers[$this->name]);
	}

	/**
	 * The read write position updates in response to $offset and $whence
	 *
	 * @param   integer  $offset  The offset in bytes
	 * @param   integer  $whence  Position the offset is added to
	 *                            Options are SEEK_SET, SEEK_CUR, and SEEK_END
	 *
	 * @return  boolean  True if updated
	 *
	 * @see     streamWrapper::stream_seek
	 * @since   1.0
	 */
	public function stream_seek($offset, $whence)
	{
		switch ($whence)
		{
			case \SEEK_SET:
				if ($offset < \strlen($this->buffers[$this->name]) &&
$offset >= 0)
				{
					$this->position = $offset;

					return true;
				}

				return false;

			case \SEEK_CUR:
				if ($offset >= 0)
				{
					$this->position += $offset;

					return true;
				}

				return false;

			case \SEEK_END:
				if (\strlen($this->buffers[$this->name]) + $offset >= 0)
				{
					$this->position = \strlen($this->buffers[$this->name]) +
$offset;

					return true;
				}

				return false;

			default:
				return false;
		}
	}
}

// Register the stream
stream_wrapper_register('buffer',
'Joomla\\Filesystem\\Buffer');
src/Clients/FtpClient.php000064400000122143151170271470011345
0ustar00<?php
/**
 * Part of the Joomla Framework Filesystem Package
 *
 * @copyright  Copyright (C) 2005 - 2020 Open Source Matters, Inc. All
rights reserved.
 * @license    GNU General Public License version 2 or later; see LICENSE
 */

namespace Joomla\Filesystem\Clients;

use Joomla\Filesystem\Exception\FilesystemException;

/*
 * Error Codes:
 * - 30 : Unable to connect to host
 * - 31 : Not connected
 * - 32 : Unable to send command to server
 * - 33 : Bad username
 * - 34 : Bad password
 * - 35 : Bad response
 * - 36 : Passive mode failed
 * - 37 : Data transfer error
 * - 38 : Local filesystem error
 */

if (!\defined('CRLF'))
{
	\define('CRLF', "\r\n");
}

if (!\defined('FTP_AUTOASCII'))
{
	\define('FTP_AUTOASCII', -1);
}

if (!\defined('FTP_BINARY'))
{
	\define('FTP_BINARY', 1);
}

if (!\defined('FTP_ASCII'))
{
	\define('FTP_ASCII', 0);
}

if (!\defined('FTP_NATIVE'))
{
	\define('FTP_NATIVE',
(\function_exists('ftp_connect')) ? 1 : 0);
}

/**
 * FTP client class
 *
 * @since  1.0
 */
class FtpClient
{
	/**
	 * Socket resource
	 *
	 * @var    resource
	 * @since  1.0
	 */
	private $conn;

	/**
	 * Data port connection resource
	 *
	 * @var    resource
	 * @since  1.0
	 */
	private $dataconn;

	/**
	 * Passive connection information
	 *
	 * @var    array
	 * @since  1.0
	 */
	private $pasv;

	/**
	 * Response Message
	 *
	 * @var    string
	 * @since  1.0
	 */
	private $response;

	/**
	 * Response Code
	 *
	 * @var    integer
	 * @since  1.0
	 */
	private $responseCode;

	/**
	 * Response Message
	 *
	 * @var    string
	 * @since  1.0
	 */
	private $responseMsg;

	/**
	 * Timeout limit
	 *
	 * @var    integer
	 * @since  1.0
	 */
	private $timeout = 15;

	/**
	 * Transfer Type
	 *
	 * @var    integer
	 * @since  1.0
	 */
	private $type;

	/**
	 * Array to hold ascii format file extensions
	 *
	 * @var    array
	 * @since  1.0
	 */
	private $autoAscii = array(
		'asp',
		'bat',
		'c',
		'cpp',
		'csv',
		'h',
		'htm',
		'html',
		'shtml',
		'ini',
		'inc',
		'log',
		'php',
		'php3',
		'pl',
		'perl',
		'sh',
		'sql',
		'txt',
		'xhtml',
		'xml',
	);

	/**
	 * Array to hold native line ending characters
	 *
	 * @var    array
	 * @since  1.0
	 */
	private $lineEndings = array('UNIX' => "\n",
'WIN' => "\r\n");

	/**
	 * FtpClient instances container.
	 *
	 * @var    FtpClient[]
	 * @since  1.0
	 */
	protected static $instances = array();

	/**
	 * FtpClient object constructor
	 *
	 * @param   array  $options  Associative array of options to set
	 *
	 * @since   1.0
	 */
	public function __construct(array $options = array())
	{
		// If default transfer type is not set, set it to autoascii detect
		if (!isset($options['type']))
		{
			$options['type'] = \FTP_BINARY;
		}

		$this->setOptions($options);

		if (FTP_NATIVE)
		{
			// Autoloading fails for Buffer as the class is used as a stream handler
			class_exists('Joomla\\Filesystem\\Buffer');
		}
	}

	/**
	 * FtpClient object destructor
	 *
	 * Closes an existing connection, if we have one
	 *
	 * @since   1.0
	 */
	public function __destruct()
	{
		if (\is_resource($this->conn))
		{
			$this->quit();
		}
	}

	/**
	 * Returns the global FTP connector object, only creating it
	 * if it doesn't already exist.
	 *
	 * You may optionally specify a username and password in the parameters.
If you do so,
	 * you may not login() again with different credentials using the same
object.
	 * If you do not use this option, you must quit() the current connection
when you
	 * are done, to free it for use by others.
	 *
	 * @param   string  $host     Host to connect to
	 * @param   string  $port     Port to connect to
	 * @param   array   $options  Array with any of these options:
type=>[FTP_AUTOASCII|FTP_ASCII|FTP_BINARY], timeout=>(int)
	 * @param   string  $user     Username to use for a connection
	 * @param   string  $pass     Password to use for a connection
	 *
	 * @return  FtpClient  The FTP Client object.
	 *
	 * @since   1.0
	 */
	public static function getInstance($host = '127.0.0.1', $port =
'21', array $options = array(), $user = null, $pass = null)
	{
		$signature = $user . ':' . $pass . '@' . $host .
':' . $port;

		// Create a new instance, or set the options of an existing one
		if (!isset(self::$instances[$signature]) ||
!\is_object(self::$instances[$signature]))
		{
			self::$instances[$signature] = new static($options);
		}
		else
		{
			self::$instances[$signature]->setOptions($options);
		}

		// Connect to the server, and login, if requested
		if (!self::$instances[$signature]->isConnected())
		{
			$return = self::$instances[$signature]->connect($host, $port);

			if ($return && $user !== null && $pass !== null)
			{
				self::$instances[$signature]->login($user, $pass);
			}
		}

		return self::$instances[$signature];
	}

	/**
	 * Set client options
	 *
	 * @param   array  $options  Associative array of options to set
	 *
	 * @return  boolean  True if successful
	 *
	 * @since   1.0
	 */
	public function setOptions(array $options)
	{
		if (isset($options['type']))
		{
			$this->type = $options['type'];
		}

		if (isset($options['timeout']))
		{
			$this->timeout = $options['timeout'];
		}

		return true;
	}

	/**
	 * Method to connect to a FTP server
	 *
	 * @param   string   $host  Host to connect to [Default: 127.0.0.1]
	 * @param   integer  $port  Port to connect on [Default: port 21]
	 *
	 * @return  boolean  True if successful
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function connect($host = '127.0.0.1', $port = 21)
	{
		$errno = null;
		$err   = null;

		// If already connected, return
		if (\is_resource($this->conn))
		{
			return true;
		}

		// If native FTP support is enabled let's use it...
		if (FTP_NATIVE)
		{
			$this->conn = @ftp_connect($host, $port, $this->timeout);

			if ($this->conn === false)
			{
				throw new FilesystemException(sprintf('%1$s: Could not connect to
host " %2$s " on port " %3$s "', __METHOD__,
$host, $port));
			}

			// Set the timeout for this connection
			ftp_set_option($this->conn, \FTP_TIMEOUT_SEC, $this->timeout);

			return true;
		}

		// Connect to the FTP server.
		$this->conn = @ fsockopen($host, $port, $errno, $err,
$this->timeout);

		if (!$this->conn)
		{
			throw new FilesystemException(
				sprintf(
					'%1$s: Could not connect to host " %2$s " on port
" %3$s ". Socket error number: %4$s and error message:
%5$s',
					__METHOD__,
					$host,
					$port,
					$errno,
					$err
				)
			);
		}

		// Set the timeout for this connection
		socket_set_timeout($this->conn, $this->timeout, 0);

		// Check for welcome response code
		if (!$this->_verifyResponse(220))
		{
			throw new FilesystemException(sprintf('%1$s: Bad response. Server
response: %2$s [Expected: 220]', __METHOD__, $this->response));
		}

		return true;
	}

	/**
	 * Method to determine if the object is connected to an FTP server
	 *
	 * @return  boolean  True if connected
	 *
	 * @since   1.0
	 */
	public function isConnected()
	{
		return \is_resource($this->conn);
	}

	/**
	 * Method to login to a server once connected
	 *
	 * @param   string  $user  Username to login to the server
	 * @param   string  $pass  Password to login to the server
	 *
	 * @return  boolean  True if successful
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function login($user = 'anonymous', $pass =
'jftp@joomla.org')
	{
		// If native FTP support is enabled let's use it...
		if (FTP_NATIVE)
		{
			if (@ftp_login($this->conn, $user, $pass) === false)
			{
				throw new FilesystemException(__METHOD__ . ': Unable to
login');
			}

			return true;
		}

		// Send the username
		if (!$this->_putCmd('USER ' . $user, array(331, 503)))
		{
			throw new FilesystemException(
				sprintf('%1$s: Bad Username. Server response: %2$s [Expected:
331]. Username sent: %3$s', __METHOD__, $this->response, $user)
			);
		}

		// If we are already logged in, continue :)
		if ($this->responseCode == 503)
		{
			return true;
		}

		// Send the password
		if (!$this->_putCmd('PASS ' . $pass, 230))
		{
			throw new FilesystemException(sprintf('%1$s: Bad Password. Server
response: %2$s [Expected: 230].', __METHOD__, $this->response));
		}

		return true;
	}

	/**
	 * Method to quit and close the connection
	 *
	 * @return  boolean  True if successful
	 *
	 * @since   1.0
	 */
	public function quit()
	{
		// If native FTP support is enabled lets use it...
		if (FTP_NATIVE)
		{
			@ftp_close($this->conn);

			return true;
		}

		// Logout and close connection
		@fwrite($this->conn, "QUIT\r\n");
		@fclose($this->conn);

		return true;
	}

	/**
	 * Method to retrieve the current working directory on the FTP server
	 *
	 * @return  string   Current working directory
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function pwd()
	{
		// If native FTP support is enabled let's use it...
		if (FTP_NATIVE)
		{
			if (($ret = @ftp_pwd($this->conn)) === false)
			{
				throw new FilesystemException(__METHOD__ . 'Bad response.');
			}

			return $ret;
		}

		$match = array(null);

		// Send print working directory command and verify success
		if (!$this->_putCmd('PWD', 257))
		{
			throw new FilesystemException(sprintf('%1$s: Bad response.  Server
response: %2$s [Expected: 257]', __METHOD__, $this->response));
		}

		// Match just the path
		preg_match('/"[^"\r\n]*"/', $this->response,
$match);

		// Return the cleaned path
		return preg_replace('/"/', '', $match[0]);
	}

	/**
	 * Method to system string from the FTP server
	 *
	 * @return  string   System identifier string
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function syst()
	{
		// If native FTP support is enabled lets use it...
		if (FTP_NATIVE)
		{
			if (($ret = @ftp_systype($this->conn)) === false)
			{
				throw new FilesystemException(__METHOD__ . 'Bad response.');
			}
		}
		else
		{
			// Send print working directory command and verify success
			if (!$this->_putCmd('SYST', 215))
			{
				throw new FilesystemException(sprintf('%1$s: Bad response.  Server
response: %2$s [Expected: 215]', __METHOD__, $this->response));
			}

			$ret = $this->response;
		}

		// Match the system string to an OS
		if (strpos(strtoupper($ret), 'MAC') !== false)
		{
			$ret = 'MAC';
		}
		elseif (strpos(strtoupper($ret), 'WIN') !== false)
		{
			$ret = 'WIN';
		}
		else
		{
			$ret = 'UNIX';
		}

		// Return the os type
		return $ret;
	}

	/**
	 * Method to change the current working directory on the FTP server
	 *
	 * @param   string  $path  Path to change into on the server
	 *
	 * @return  boolean True if successful
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function chdir($path)
	{
		// If native FTP support is enabled lets use it...
		if (FTP_NATIVE)
		{
			if (@ftp_chdir($this->conn, $path) === false)
			{
				throw new FilesystemException(__METHOD__ . 'Bad response.');
			}

			return true;
		}

		// Send change directory command and verify success
		if (!$this->_putCmd('CWD ' . $path, 250))
		{
			throw new FilesystemException(
				sprintf('%1$s: Bad response.  Server response: %2$s [Expected:
250].  Sent path: %3$s', __METHOD__, $this->response, $path)
			);
		}

		return true;
	}

	/**
	 * Method to reinitialise the server, ie. need to login again
	 *
	 * NOTE: This command not available on all servers
	 *
	 * @return  boolean  True if successful
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function reinit()
	{
		// If native FTP support is enabled let's use it...
		if (FTP_NATIVE)
		{
			if (@ftp_site($this->conn, 'REIN') === false)
			{
				throw new FilesystemException(__METHOD__ . 'Bad response.');
			}

			return true;
		}

		// Send reinitialise command to the server
		if (!$this->_putCmd('REIN', 220))
		{
			throw new FilesystemException(sprintf('%1$s: Bad response.  Server
response: %2$s [Expected: 220]', __METHOD__, $this->response));
		}

		return true;
	}

	/**
	 * Method to rename a file/folder on the FTP server
	 *
	 * @param   string  $from  Path to change file/folder from
	 * @param   string  $to    Path to change file/folder to
	 *
	 * @return  boolean  True if successful
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function rename($from, $to)
	{
		// If native FTP support is enabled let's use it...
		if (FTP_NATIVE)
		{
			if (@ftp_rename($this->conn, $from, $to) === false)
			{
				throw new FilesystemException(__METHOD__ . 'Bad response.');
			}

			return true;
		}

		// Send rename from command to the server
		if (!$this->_putCmd('RNFR ' . $from, 350))
		{
			throw new FilesystemException(
				sprintf('%1$s: Bad response.  Server response: %2$s [Expected:
350].  From path sent: %3$s', __METHOD__, $this->response, $from)
			);
		}

		// Send rename to command to the server
		if (!$this->_putCmd('RNTO ' . $to, 250))
		{
			throw new FilesystemException(
				sprintf('%1$s: Bad response.  Server response: %2$s [Expected:
250].  To path sent: %3$s', __METHOD__, $this->response, $to)
			);
		}

		return true;
	}

	/**
	 * Method to change mode for a path on the FTP server
	 *
	 * @param   string  $path  Path to change mode on
	 * @param   mixed   $mode  Octal value to change mode to, e.g.
'0777', 0777 or 511 (string or integer)
	 *
	 * @return  boolean  True if successful
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function chmod($path, $mode)
	{
		// If no filename is given, we assume the current directory is the target
		if ($path == '')
		{
			$path = '.';
		}

		// Convert the mode to a string
		if (\is_int($mode))
		{
			$mode = decoct($mode);
		}

		// If native FTP support is enabled let's use it...
		if (FTP_NATIVE)
		{
			if (@ftp_site($this->conn, 'CHMOD ' . $mode . ' '
. $path) === false)
			{
				if (!\defined('PHP_WINDOWS_VERSION_MAJOR'))
				{
					throw new FilesystemException(__METHOD__ . 'Bad response.');
				}

				return false;
			}

			return true;
		}

		// Send change mode command and verify success [must convert mode from
octal]
		if (!$this->_putCmd('SITE CHMOD ' . $mode . ' ' .
$path, array(200, 250)))
		{
			if (!\defined('PHP_WINDOWS_VERSION_MAJOR'))
			{
				throw new FilesystemException(
					sprintf(
						'%1$s: Bad response.  Server response: %2$s [Expected: 250]. 
Path sent: %3$s.  Mode sent: %4$s',
						__METHOD__,
						$this->response,
						$path,
						$mode
					)
				);
			}

			return false;
		}

		return true;
	}

	/**
	 * Method to delete a path [file/folder] on the FTP server
	 *
	 * @param   string  $path  Path to delete
	 *
	 * @return  boolean  True if successful
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function delete($path)
	{
		// If native FTP support is enabled let's use it...
		if (FTP_NATIVE)
		{
			if (@ftp_delete($this->conn, $path) === false)
			{
				if (@ftp_rmdir($this->conn, $path) === false)
				{
					throw new FilesystemException(__METHOD__ . 'Bad response.');
				}
			}

			return true;
		}

		// Send delete file command and if that doesn't work, try to remove
a directory
		if (!$this->_putCmd('DELE ' . $path, 250))
		{
			if (!$this->_putCmd('RMD ' . $path, 250))
			{
				throw new FilesystemException(
					sprintf('%1$s: Bad response.  Server response: %2$s [Expected:
250].  Path sent: %3$s', __METHOD__, $this->response, $path)
				);
			}
		}

		return true;
	}

	/**
	 * Method to create a directory on the FTP server
	 *
	 * @param   string  $path  Directory to create
	 *
	 * @return  boolean  True if successful
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function mkdir($path)
	{
		// If native FTP support is enabled let's use it...
		if (FTP_NATIVE)
		{
			if (@ftp_mkdir($this->conn, $path) === false)
			{
				throw new FilesystemException(__METHOD__ . 'Bad response.');
			}

			return true;
		}

		// Send change directory command and verify success
		if (!$this->_putCmd('MKD ' . $path, 257))
		{
			throw new FilesystemException(
				sprintf('%1$s: Bad response.  Server response: %2$s [Expected:
257].  Path sent: %3$s', __METHOD__, $this->response, $path)
			);
		}

		return true;
	}

	/**
	 * Method to restart data transfer at a given byte
	 *
	 * @param   integer  $point  Byte to restart transfer at
	 *
	 * @return  boolean  True if successful
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function restart($point)
	{
		// If native FTP support is enabled let's use it...
		if (FTP_NATIVE)
		{
			if (@ftp_site($this->conn, 'REST ' . $point) === false)
			{
				throw new FilesystemException(__METHOD__ . 'Bad response.');
			}

			return true;
		}

		// Send restart command and verify success
		if (!$this->_putCmd('REST ' . $point, 350))
		{
			throw new FilesystemException(
				sprintf(
					'%1$s: Bad response.  Server response: %2$s [Expected: 350]. 
Restart point sent: %3$s', __METHOD__, $this->response, $point
				)
			);
		}

		return true;
	}

	/**
	 * Method to create an empty file on the FTP server
	 *
	 * @param   string  $path  Path local file to store on the FTP server
	 *
	 * @return  boolean  True if successful
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function create($path)
	{
		// If native FTP support is enabled let's use it...
		if (FTP_NATIVE)
		{
			// Turn passive mode on
			if (@ftp_pasv($this->conn, true) === false)
			{
				throw new FilesystemException(__METHOD__ . ': Unable to use
passive mode.');
			}

			$buffer = fopen('buffer://tmp', 'r');

			if (@ftp_fput($this->conn, $path, $buffer, \FTP_ASCII) === false)
			{
				fclose($buffer);

				throw new FilesystemException(__METHOD__ . 'Bad response.');
			}

			fclose($buffer);

			return true;
		}

		// Start passive mode
		if (!$this->_passive())
		{
			throw new FilesystemException(__METHOD__ . ': Unable to use passive
mode.');
		}

		if (!$this->_putCmd('STOR ' . $path, array(150, 125)))
		{
			@ fclose($this->dataconn);

			throw new FilesystemException(
				sprintf('%1$s: Bad response.  Server response: %2$s [Expected: 150
or 125].  Path sent: %3$s', __METHOD__, $this->response, $path)
			);
		}

		// To create a zero byte upload close the data port connection
		fclose($this->dataconn);

		if (!$this->_verifyResponse(226))
		{
			throw new FilesystemException(
				sprintf('%1$s: Transfer failed.  Server response: %2$s [Expected:
226].  Path sent: %3$s', __METHOD__, $this->response, $path)
			);
		}

		return true;
	}

	/**
	 * Method to read a file from the FTP server's contents into a buffer
	 *
	 * @param   string  $remote  Path to remote file to read on the FTP server
	 * @param   string  $buffer  Buffer variable to read file contents into
	 *
	 * @return  boolean  True if successful
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function read($remote, &$buffer)
	{
		// Determine file type
		$mode = $this->_findMode($remote);

		// If native FTP support is enabled let's use it...
		if (FTP_NATIVE)
		{
			// Turn passive mode on
			if (@ftp_pasv($this->conn, true) === false)
			{
				throw new FilesystemException(__METHOD__ . ': Unable to use
passive mode.');
			}

			$tmp = fopen('buffer://tmp', 'br+');

			if (@ftp_fget($this->conn, $tmp, $remote, $mode) === false)
			{
				fclose($tmp);

				throw new FilesystemException(__METHOD__ . 'Bad response.');
			}

			// Read tmp buffer contents
			rewind($tmp);
			$buffer = '';

			while (!feof($tmp))
			{
				$buffer .= fread($tmp, 8192);
			}

			fclose($tmp);

			return true;
		}

		$this->_mode($mode);

		// Start passive mode
		if (!$this->_passive())
		{
			throw new FilesystemException(__METHOD__ . ': Unable to use passive
mode.');
		}

		if (!$this->_putCmd('RETR ' . $remote, array(150, 125)))
		{
			@ fclose($this->dataconn);

			throw new FilesystemException(
				sprintf('%1$s: Bad response.  Server response: %2$s [Expected: 150
or 125].  Path sent: %3$s', __METHOD__, $this->response, $remote)
			);
		}

		// Read data from data port connection and add to the buffer
		$buffer = '';

		while (!feof($this->dataconn))
		{
			$buffer .= fread($this->dataconn, 4096);
		}

		// Close the data port connection
		fclose($this->dataconn);

		// Let's try to cleanup some line endings if it is ascii
		if ($mode == \FTP_ASCII)
		{
			$os = 'UNIX';

			if (\defined('PHP_WINDOWS_VERSION_MAJOR'))
			{
				$os = 'WIN';
			}

			$buffer = preg_replace('/' . CRLF . '/',
$this->lineEndings[$os], $buffer);
		}

		if (!$this->_verifyResponse(226))
		{
			throw new FilesystemException(
				sprintf(
					'%1$s: Transfer failed.  Server response: %2$s [Expected: 226]. 
Restart point sent: %3$s',
					__METHOD__, $this->response, $remote
				)
			);
		}

		return true;
	}

	/**
	 * Method to get a file from the FTP server and save it to a local file
	 *
	 * @param   string  $local   Local path to save remote file to
	 * @param   string  $remote  Path to remote file to get on the FTP server
	 *
	 * @return  boolean  True if successful
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function get($local, $remote)
	{
		// Determine file type
		$mode = $this->_findMode($remote);

		// If native FTP support is enabled let's use it...
		if (FTP_NATIVE)
		{
			// Turn passive mode on
			if (@ftp_pasv($this->conn, true) === false)
			{
				throw new FilesystemException(__METHOD__ . ': Unable to use
passive mode.');
			}

			if (@ftp_get($this->conn, $local, $remote, $mode) === false)
			{
				throw new FilesystemException(__METHOD__ . 'Bad response.');
			}

			return true;
		}

		$this->_mode($mode);

		// Check to see if the local file can be opened for writing
		$fp = fopen($local, 'wb');

		if (!$fp)
		{
			throw new FilesystemException(sprintf('%1$s: Unable to open local
file for writing.  Local path: %2$s', __METHOD__, $local));
		}

		// Start passive mode
		if (!$this->_passive())
		{
			throw new FilesystemException(__METHOD__ . ': Unable to use passive
mode.');
		}

		if (!$this->_putCmd('RETR ' . $remote, array(150, 125)))
		{
			@ fclose($this->dataconn);

			throw new FilesystemException(
				sprintf('%1$s: Bad response.  Server response: %2$s [Expected: 150
or 125].  Path sent: %3$s', __METHOD__, $this->response, $remote)
			);
		}

		// Read data from data port connection and add to the buffer
		while (!feof($this->dataconn))
		{
			$buffer = fread($this->dataconn, 4096);
			fwrite($fp, $buffer, 4096);
		}

		// Close the data port connection and file pointer
		fclose($this->dataconn);
		fclose($fp);

		if (!$this->_verifyResponse(226))
		{
			throw new FilesystemException(
				sprintf('%1$s: Transfer failed.  Server response: %2$s [Expected:
226].  Path sent: %3$s', __METHOD__, $this->response, $remote)
			);
		}

		return true;
	}

	/**
	 * Method to store a file to the FTP server
	 *
	 * @param   string  $local   Path to local file to store on the FTP server
	 * @param   string  $remote  FTP path to file to create
	 *
	 * @return  boolean  True if successful
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function store($local, $remote = null)
	{
		// If remote file is not given, use the filename of the local file in the
current
		// working directory.
		if ($remote == null)
		{
			$remote = basename($local);
		}

		// Determine file type
		$mode = $this->_findMode($remote);

		// If native FTP support is enabled let's use it...
		if (FTP_NATIVE)
		{
			// Turn passive mode on
			if (@ftp_pasv($this->conn, true) === false)
			{
				throw new FilesystemException(__METHOD__ . ': Unable to use
passive mode.');
			}

			if (@ftp_put($this->conn, $remote, $local, $mode) === false)
			{
				throw new FilesystemException(__METHOD__ . 'Bad response.');
			}

			return true;
		}

		$this->_mode($mode);

		// Check to see if the local file exists and if so open it for reading
		if (@ file_exists($local))
		{
			$fp = fopen($local, 'rb');

			if (!$fp)
			{
				throw new FilesystemException(sprintf('%1$s: Unable to open local
file for reading. Local path: %2$s', __METHOD__, $local));
			}
		}
		else
		{
			throw new FilesystemException(sprintf('%1$s: Unable to find local
file. Local path: %2$s', __METHOD__, $local));
		}

		// Start passive mode
		if (!$this->_passive())
		{
			@ fclose($fp);

			throw new FilesystemException(__METHOD__ . ': Unable to use passive
mode.');
		}

		// Send store command to the FTP server
		if (!$this->_putCmd('STOR ' . $remote, array(150, 125)))
		{
			@ fclose($fp);
			@ fclose($this->dataconn);

			throw new FilesystemException(
				sprintf('%1$s: Bad response.  Server response: %2$s [Expected: 150
or 125].  Path sent: %3$s', __METHOD__, $this->response, $remote)
			);
		}

		// Do actual file transfer, read local file and write to data port
connection
		while (!feof($fp))
		{
			$line = fread($fp, 4096);

			do
			{
				if (($result = @ fwrite($this->dataconn, $line)) === false)
				{
					throw new FilesystemException(__METHOD__ . ': Unable to write to
data port socket');
				}

				$line = substr($line, $result);
			}
			while ($line != '');
		}

		fclose($fp);
		fclose($this->dataconn);

		if (!$this->_verifyResponse(226))
		{
			throw new FilesystemException(
				sprintf('%1$s: Transfer failed.  Server response: %2$s [Expected:
226].  Path sent: %3$s', __METHOD__, $this->response, $remote)
			);
		}

		return true;
	}

	/**
	 * Method to write a string to the FTP server
	 *
	 * @param   string  $remote  FTP path to file to write to
	 * @param   string  $buffer  Contents to write to the FTP server
	 *
	 * @return  boolean  True if successful
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function write($remote, $buffer)
	{
		// Determine file type
		$mode = $this->_findMode($remote);

		// If native FTP support is enabled let's use it...
		if (FTP_NATIVE)
		{
			// Turn passive mode on
			if (@ftp_pasv($this->conn, true) === false)
			{
				throw new FilesystemException(__METHOD__ . ': Unable to use
passive mode.');
			}

			$tmp = fopen('buffer://tmp', 'br+');
			fwrite($tmp, $buffer);
			rewind($tmp);

			if (@ftp_fput($this->conn, $remote, $tmp, $mode) === false)
			{
				fclose($tmp);

				throw new FilesystemException(__METHOD__ . 'Bad response.');
			}

			fclose($tmp);

			return true;
		}

		// First we need to set the transfer mode
		$this->_mode($mode);

		// Start passive mode
		if (!$this->_passive())
		{
			throw new FilesystemException(__METHOD__ . ': Unable to use passive
mode.');
		}

		// Send store command to the FTP server
		if (!$this->_putCmd('STOR ' . $remote, array(150, 125)))
		{
			@ fclose($this->dataconn);

			throw new FilesystemException(
				sprintf('%1$s: Bad response.  Server response: %2$s [Expected: 150
or 125].  Path sent: %3$s', __METHOD__, $this->response, $remote)
			);
		}

		// Write buffer to the data connection port
		do
		{
			if (($result = @ fwrite($this->dataconn, $buffer)) === false)
			{
				throw new FilesystemException(__METHOD__ . ': Unable to write to
data port socket.');
			}

			$buffer = substr($buffer, $result);
		}
		while ($buffer != '');

		// Close the data connection port [Data transfer complete]
		fclose($this->dataconn);

		// Verify that the server received the transfer
		if (!$this->_verifyResponse(226))
		{
			throw new FilesystemException(
				sprintf('%1$s: Transfer failed.  Server response: %2$s [Expected:
226].  Path sent: %3$s', __METHOD__, $this->response, $remote)
			);
		}

		return true;
	}

	/**
	 * Method to list the filenames of the contents of a directory on the FTP
server
	 *
	 * Note: Some servers also return folder names. However, to be sure to
list folders on all
	 * servers, you should use listDetails() instead if you also need to deal
with folders
	 *
	 * @param   string  $path  Path local file to store on the FTP server
	 *
	 * @return  string  Directory listing
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function listNames($path = null)
	{
		$data = null;

		// If native FTP support is enabled let's use it...
		if (FTP_NATIVE)
		{
			// Turn passive mode on
			if (@ftp_pasv($this->conn, true) === false)
			{
				throw new FilesystemException(__METHOD__ . ': Unable to use
passive mode.');
			}

			if (($list = @ftp_nlist($this->conn, $path)) === false)
			{
				// Workaround for empty directories on some servers
				if ($this->listDetails($path, 'files') === array())
				{
					return array();
				}

				throw new FilesystemException(__METHOD__ . 'Bad response.');
			}

			$list = preg_replace('#^' . preg_quote($path, '#') .
'[/\\\\]?#', '', $list);

			if ($keys = array_merge(array_keys($list, '.'),
array_keys($list, '..')))
			{
				foreach ($keys as $key)
				{
					unset($list[$key]);
				}
			}

			return $list;
		}

		// If a path exists, prepend a space
		if ($path != null)
		{
			$path = ' ' . $path;
		}

		// Start passive mode
		if (!$this->_passive())
		{
			throw new FilesystemException(__METHOD__ . ': Unable to use passive
mode.');
		}

		if (!$this->_putCmd('NLST' . $path, array(150, 125)))
		{
			@ fclose($this->dataconn);

			// Workaround for empty directories on some servers
			if ($this->listDetails($path, 'files') === array())
			{
				return array();
			}

			throw new FilesystemException(
				sprintf('%1$s: Bad response.  Server response: %2$s [Expected: 150
or 125].  Path sent: %3$s', __METHOD__, $this->response, $path)
			);
		}

		// Read in the file listing.
		while (!feof($this->dataconn))
		{
			$data .= fread($this->dataconn, 4096);
		}

		fclose($this->dataconn);

		// Everything go okay?
		if (!$this->_verifyResponse(226))
		{
			throw new FilesystemException(
				sprintf('%1$s: Transfer failed.  Server response: %2$s [Expected:
226].  Path sent: %3$s', __METHOD__, $this->response, $path)
			);
		}

		$data = preg_split('/[' . CRLF . ']+/', $data, -1,
\PREG_SPLIT_NO_EMPTY);
		$data = preg_replace('#^' . preg_quote(substr($path, 1),
'#') . '[/\\\\]?#', '', $data);

		if ($keys = array_merge(array_keys($data, '.'),
array_keys($data, '..')))
		{
			foreach ($keys as $key)
			{
				unset($data[$key]);
			}
		}

		return $data;
	}

	/**
	 * Method to list the contents of a directory on the FTP server
	 *
	 * @param   string  $path  Path to the local file to be stored on the FTP
server
	 * @param   string  $type  Return type [raw|all|folders|files]
	 *
	 * @return  string[]  If $type is raw: string Directory listing, otherwise
array of string with file-names
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function listDetails($path = null, $type = 'all')
	{
		$dirList = array();
		$data    = null;
		$regs    = null;

		// TODO: Deal with recurse -- nightmare
		// For now we will just set it to false
		$recurse = false;

		// If native FTP support is enabled let's use it...
		if (FTP_NATIVE)
		{
			// Turn passive mode on
			if (@ftp_pasv($this->conn, true) === false)
			{
				throw new FilesystemException(__METHOD__ . ': Unable to use
passive mode.');
			}

			if (($contents = @ftp_rawlist($this->conn, $path)) === false)
			{
				throw new FilesystemException(__METHOD__ . 'Bad response.');
			}
		}
		else
		{
			// Non Native mode

			// Start passive mode
			if (!$this->_passive())
			{
				throw new FilesystemException(__METHOD__ . ': Unable to use
passive mode.');
			}

			// If a path exists, prepend a space
			if ($path != null)
			{
				$path = ' ' . $path;
			}

			// Request the file listing
			if (!$this->_putCmd(($recurse == true) ? 'LIST -R' :
'LIST' . $path, array(150, 125)))
			{
				@ fclose($this->dataconn);

				throw new FilesystemException(
					sprintf(
						'%1$s: Bad response.  Server response: %2$s [Expected: 150 or
125].  Path sent: %3$s',
						__METHOD__, $this->response, $path
					)
				);
			}

			// Read in the file listing.
			while (!feof($this->dataconn))
			{
				$data .= fread($this->dataconn, 4096);
			}

			fclose($this->dataconn);

			// Everything go okay?
			if (!$this->_verifyResponse(226))
			{
				throw new FilesystemException(
					sprintf('%1$s: Transfer failed.  Server response: %2$s [Expected:
226].  Path sent: %3$s', __METHOD__, $this->response, $path)
				);
			}

			$contents = explode(CRLF, $data);
		}

		// If only raw output is requested we are done
		if ($type == 'raw')
		{
			return $data;
		}

		// If we received the listing of an empty directory, we are done as well
		if (empty($contents[0]))
		{
			return $dirList;
		}

		// If the server returned the number of results in the first response,
let's dump it
		if (strtolower(substr($contents[0], 0, 6)) == 'total ')
		{
			array_shift($contents);

			if (!isset($contents[0]) || empty($contents[0]))
			{
				return $dirList;
			}
		}

		// Regular expressions for the directory listing parsing.
		$regexps = array(
			'UNIX' => '#([-dl][rwxstST-]+).* ([0-9]*)
([a-zA-Z0-9]+).* ([a-zA-Z0-9]+).* ([0-9]*)'
				. ' ([a-zA-Z]+[0-9: ]*[0-9])[ ]+(([0-9]{1,2}:[0-9]{2})|[0-9]{4})
(.+)#',
			'MAC' => '#([-dl][rwxstST-]+).* ?([0-9
]*)?([a-zA-Z0-9]+).* ([a-zA-Z0-9]+).* ([0-9]*)'
				. ' ([a-zA-Z]+[0-9: ]*[0-9])[ ]+(([0-9]{2}:[0-9]{2})|[0-9]{4})
(.+)#',
			'WIN' => '#([0-9]{2})-([0-9]{2})-([0-9]{2})
+([0-9]{2}):([0-9]{2})(AM|PM) +([0-9]+|<DIR>) +(.+)#',
		);

		// Find out the format of the directory listing by matching one of the
regexps
		$osType = null;

		foreach ($regexps as $k => $v)
		{
			if (@preg_match($v, $contents[0]))
			{
				$osType = $k;
				$regexp = $v;

				break;
			}
		}

		if (!$osType)
		{
			throw new FilesystemException(__METHOD__ . ': Unrecognised
directory listing format.');
		}

		/*
		 * Here is where it is going to get dirty....
		 */
		if ($osType == 'UNIX' || $osType == 'MAC')
		{
			foreach ($contents as $file)
			{
				$tmpArray = null;

				if (@preg_match($regexp, $file, $regs))
				{
					$fType = (int) strpos('-dl', $regs[1][0]);

					// $tmpArray['line'] = $regs[0];
					$tmpArray['type']   = $fType;
					$tmpArray['rights'] = $regs[1];

					// $tmpArray['number'] = $regs[2];
					$tmpArray['user']  = $regs[3];
					$tmpArray['group'] = $regs[4];
					$tmpArray['size']  = $regs[5];
					$tmpArray['date']  = @date('m-d',
strtotime($regs[6]));
					$tmpArray['time']  = $regs[7];
					$tmpArray['name']  = $regs[9];
				}

				// If we just want files, do not add a folder
				if ($type == 'files' && $tmpArray['type']
== 1)
				{
					continue;
				}

				// If we just want folders, do not add a file
				if ($type == 'folders' && $tmpArray['type']
== 0)
				{
					continue;
				}

				if (\is_array($tmpArray) && $tmpArray['name'] !=
'.' && $tmpArray['name'] != '..')
				{
					$dirList[] = $tmpArray;
				}
			}
		}
		else
		{
			foreach ($contents as $file)
			{
				$tmpArray = null;

				if (@preg_match($regexp, $file, $regs))
				{
					$fType     = (int) ($regs[7] == '<DIR>');
					$timestamp = strtotime("$regs[3]-$regs[1]-$regs[2]
$regs[4]:$regs[5]$regs[6]");

					// $tmpArray['line'] = $regs[0];
					$tmpArray['type']   = $fType;
					$tmpArray['rights'] = '';

					// $tmpArray['number'] = 0;
					$tmpArray['user']  = '';
					$tmpArray['group'] = '';
					$tmpArray['size']  = (int) $regs[7];
					$tmpArray['date']  = date('m-d', $timestamp);
					$tmpArray['time']  = date('H:i', $timestamp);
					$tmpArray['name']  = $regs[8];
				}

				// If we just want files, do not add a folder
				if ($type == 'files' && $tmpArray['type']
== 1)
				{
					continue;
				}

				// If we just want folders, do not add a file
				if ($type == 'folders' && $tmpArray['type']
== 0)
				{
					continue;
				}

				if (\is_array($tmpArray) && $tmpArray['name'] !=
'.' && $tmpArray['name'] != '..')
				{
					$dirList[] = $tmpArray;
				}
			}
		}

		return $dirList;
	}

	/**
	 * Send command to the FTP server and validate an expected response code
	 *
	 * @param   string  $cmd               Command to send to the FTP server
	 * @param   mixed   $expectedResponse  Integer response code or array of
integer response codes
	 *
	 * @return  boolean  True if command executed successfully
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	protected function _putCmd($cmd, $expectedResponse)
	{
		// Make sure we have a connection to the server
		if (!\is_resource($this->conn))
		{
			throw new FilesystemException(__METHOD__ . ': Not connected to the
control port.');
		}

		// Send the command to the server
		if (!fwrite($this->conn, $cmd . "\r\n"))
		{
			throw new FilesystemException(sprintf('%1$s: Unable to send
command: %2$s', __METHOD__, $cmd));
		}

		return $this->_verifyResponse($expectedResponse);
	}

	/**
	 * Verify the response code from the server and log response if flag is
set
	 *
	 * @param   mixed  $expected  Integer response code or array of integer
response codes
	 *
	 * @return  boolean  True if response code from the server is expected
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	protected function _verifyResponse($expected)
	{
		$parts = null;

		// Wait for a response from the server, but timeout after the set time
limit
		$endTime        = time() + $this->timeout;
		$this->response = '';

		do
		{
			$this->response .= fgets($this->conn, 4096);
		}
		while (!preg_match('/^([0-9]{3})(-(.*' . CRLF . ')+\\1)?
[^' . CRLF . ']+' . CRLF . '$/',
$this->response, $parts) && time() < $endTime);

		// Catch a timeout or bad response
		if (!isset($parts[1]))
		{
			throw new FilesystemException(
				sprintf(
					'%1$s: Timeout or unrecognised response while waiting for a
response from the server. Server response: %2$s',
					__METHOD__, $this->response
				)
			);
		}

		// Separate the code from the message
		$this->responseCode = $parts[1];
		$this->responseMsg  = $parts[0];

		// Did the server respond with the code we wanted?
		if (\is_array($expected))
		{
			if (\in_array($this->responseCode, $expected))
			{
				$retval = true;
			}
			else
			{
				$retval = false;
			}
		}
		else
		{
			if ($this->responseCode == $expected)
			{
				$retval = true;
			}
			else
			{
				$retval = false;
			}
		}

		return $retval;
	}

	/**
	 * Set server to passive mode and open a data port connection
	 *
	 * @return  boolean  True if successful
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	protected function _passive()
	{
		$match = array();
		$parts = array();
		$errno = null;
		$err   = null;

		// Make sure we have a connection to the server
		if (!\is_resource($this->conn))
		{
			throw new FilesystemException(__METHOD__ . ': Not connected to the
control port.');
		}

		// Request a passive connection - this means, we'll talk to you, you
don't talk to us.
		@ fwrite($this->conn, "PASV\r\n");

		// Wait for a response from the server, but timeout after the set time
limit
		$endTime        = time() + $this->timeout;
		$this->response = '';

		do
		{
			$this->response .= fgets($this->conn, 4096);
		}
		while (!preg_match('/^([0-9]{3})(-(.*' . CRLF . ')+\\1)?
[^' . CRLF . ']+' . CRLF . '$/',
$this->response, $parts) && time() < $endTime);

		// Catch a timeout or bad response
		if (!isset($parts[1]))
		{
			throw new FilesystemException(
				sprintf(
					'%1$s: Timeout or unrecognised response while waiting for a
response from the server. Server response: %2$s',
					__METHOD__, $this->response
				)
			);
		}

		// Separate the code from the message
		$this->responseCode = $parts[1];
		$this->responseMsg  = $parts[0];

		// If it's not 227, we weren't given an IP and port, which
means it failed.
		if ($this->responseCode != 227)
		{
			throw new FilesystemException(
				sprintf('%1$s: Unable to obtain IP and port for data transfer.
Server response: %2$s', __METHOD__, $this->responseMsg)
			);
		}

		// Snatch the IP and port information, or die horribly trying...
		if
(preg_match('~\((\d+),\s*(\d+),\s*(\d+),\s*(\d+),\s*(\d+)(?:,\s*(\d+))\)~',
$this->responseMsg, $match) == 0)
		{
			throw new FilesystemException(
				sprintf('%1$s: IP and port for data transfer not valid. Server
response: %2$s', __METHOD__, $this->responseMsg)
			);
		}

		// This is pretty simple - store it for later use ;).
		$this->pasv = array('ip' => $match[1] . '.' .
$match[2] . '.' . $match[3] . '.' . $match[4],
'port' => $match[5] * 256 + $match[6]);

		// Connect, assuming we've got a connection.
		$this->dataconn = @fsockopen($this->pasv['ip'],
$this->pasv['port'], $errno, $err, $this->timeout);

		if (!$this->dataconn)
		{
			throw new FilesystemException(
				sprintf(
					'%1$s: Could not connect to host %2$s on port %3$s. Socket error
number: %4$s and error message: %5$s',
					__METHOD__,
					$this->pasv['ip'],
					$this->pasv['port'],
					$errno,
					$err
				)
			);
		}

		// Set the timeout for this connection
		socket_set_timeout($this->conn, $this->timeout, 0);

		return true;
	}

	/**
	 * Method to find out the correct transfer mode for a specific file
	 *
	 * @param   string  $fileName  Name of the file
	 *
	 * @return  integer Transfer-mode for this filetype [FTP_ASCII|FTP_BINARY]
	 *
	 * @since   1.0
	 */
	protected function _findMode($fileName)
	{
		if ($this->type == FTP_AUTOASCII)
		{
			$dot = strrpos($fileName, '.') + 1;
			$ext = substr($fileName, $dot);

			if (\in_array($ext, $this->autoAscii))
			{
				$mode = \FTP_ASCII;
			}
			else
			{
				$mode = \FTP_BINARY;
			}
		}
		elseif ($this->type == \FTP_ASCII)
		{
			$mode = \FTP_ASCII;
		}
		else
		{
			$mode = \FTP_BINARY;
		}

		return $mode;
	}

	/**
	 * Set transfer mode
	 *
	 * @param   integer  $mode  Integer representation of data transfer mode
[1:Binary|0:Ascii]
	 *                          Defined constants can also be used
[FTP_BINARY|FTP_ASCII]
	 *
	 * @return  boolean  True if successful
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	protected function _mode($mode)
	{
		if ($mode == \FTP_BINARY)
		{
			if (!$this->_putCmd('TYPE I', 200))
			{
				throw new FilesystemException(
					sprintf('%1$s: Bad response. Server response: %2$s [Expected:
200]. Mode sent: Binary', __METHOD__, $this->response)
				);
			}
		}
		else
		{
			if (!$this->_putCmd('TYPE A', 200))
			{
				throw new FilesystemException(
					sprintf('%1$s: Bad response. Server response: %2$s [Expected:
200]. Mode sent: ASCII', __METHOD__, $this->response)
				);
			}
		}

		return true;
	}
}
src/Exception/FilesystemException.php000064400000001773151170271470014022
0ustar00<?php
/**
 * Part of the Joomla Framework Filesystem Package
 *
 * @copyright  Copyright (C) 2005 - 2020 Open Source Matters, Inc. All
rights reserved.
 * @license    GNU General Public License version 2 or later; see LICENSE
 */

namespace Joomla\Filesystem\Exception;

use Joomla\Filesystem\Path;

/**
 * Exception class for handling errors in the Filesystem package
 *
 * @since   1.2.0
 * @change  1.6.2  If the message containes a full path, the root path
(JPATH_ROOT) is removed from it
 *          to avoid any full path disclosure. Before 1.6.2, the path was
propagated as provided.
 */
class FilesystemException extends \RuntimeException
{
	/**
	 * Constructor.
	 *
	 * @param   string           $message   The message
	 * @param   integer          $code      The code
	 * @param   \Throwable|null  $previous  A previous exception
	 */
	public function __construct($message = "", $code = 0, \Throwable
$previous = null)
	{
		parent::__construct(
			Path::removeRoot($message),
			$code,
			$previous
		);
	}
}
src/File.php000064400000015417151170271470006740 0ustar00<?php
/**
 * Part of the Joomla Framework Filesystem Package
 *
 * @copyright  Copyright (C) 2005 - 2020 Open Source Matters, Inc. All
rights reserved.
 * @license    GNU General Public License version 2 or later; see LICENSE
 */

namespace Joomla\Filesystem;

use Joomla\Filesystem\Exception\FilesystemException;

/**
 * A File handling class
 *
 * @since  1.0
 */
class File
{
	/**
	 * Strips the last extension off of a file name
	 *
	 * @param   string  $file  The file name
	 *
	 * @return  string  The file name without the extension
	 *
	 * @since   1.0
	 */
	public static function stripExt($file)
	{
		return preg_replace('#\.[^.]*$#', '', $file);
	}

	/**
	 * Makes the file name safe to use
	 *
	 * @param   string  $file        The name of the file [not full path]
	 * @param   array   $stripChars  Array of regex (by default will remove
any leading periods)
	 *
	 * @return  string  The sanitised string
	 *
	 * @since   1.0
	 */
	public static function makeSafe($file, array $stripChars =
array('#^\.#'))
	{
		$regex = array_merge(array('#(\.){2,}#',
'#[^A-Za-z0-9\.\_\- ]#'), $stripChars);

		$file = preg_replace($regex, '', $file);

		// Remove any trailing dots, as those aren't ever valid file names.
		$file = rtrim($file, '.');

		return $file;
	}

	/**
	 * Copies a file
	 *
	 * @param   string   $src         The path to the source file
	 * @param   string   $dest        The path to the destination file
	 * @param   string   $path        An optional base path to prefix to the
file names
	 * @param   boolean  $useStreams  True to use streams
	 *
	 * @return  boolean  True on success
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 * @throws  \UnexpectedValueException
	 */
	public static function copy($src, $dest, $path = null, $useStreams =
false)
	{
		// Prepend a base path if it exists
		if ($path)
		{
			$src  = Path::clean($path . '/' . $src);
			$dest = Path::clean($path . '/' . $dest);
		}

		// Check src path
		if (!is_readable($src))
		{
			throw new \UnexpectedValueException(
				sprintf(
					"%s: Cannot find or read file: %s",
					__METHOD__,
					Path::removeRoot($src)
				)
			);
		}

		if ($useStreams)
		{
			$stream = Stream::getStream();

			if (!$stream->copy($src, $dest, null, false))
			{
				throw new FilesystemException(sprintf('%1$s(%2$s, %3$s):
%4$s', __METHOD__, $src, $dest, $stream->getError()));
			}

			return true;
		}

		if (!@ copy($src, $dest))
		{
			throw new FilesystemException(__METHOD__ . ': Copy failed.');
		}

		return true;
	}

	/**
	 * Delete a file or array of files
	 *
	 * @param   mixed  $file  The file name or an array of file names
	 *
	 * @return  boolean  True on success
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public static function delete($file)
	{
		$files = (array) $file;

		foreach ($files as $file)
		{
			$file     = Path::clean($file);
			$filename = basename($file);

			if (!Path::canChmod($file))
			{
				throw new FilesystemException(__METHOD__ . ': Failed deleting
inaccessible file ' . $filename);
			}

			// Try making the file writable first. If it's read-only, it
can't be deleted
			// on Windows, even if the parent folder is writable
			@chmod($file, 0777);

			// In case of restricted permissions we zap it one way or the other
			// as long as the owner is either the webserver or the ftp
			if (!@ unlink($file))
			{
				throw new FilesystemException(__METHOD__ . ': Failed deleting
' . $filename);
			}
		}

		return true;
	}

	/**
	 * Moves a file
	 *
	 * @param   string   $src         The path to the source file
	 * @param   string   $dest        The path to the destination file
	 * @param   string   $path        An optional base path to prefix to the
file names
	 * @param   boolean  $useStreams  True to use streams
	 *
	 * @return  boolean  True on success
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public static function move($src, $dest, $path = '', $useStreams
= false)
	{
		if ($path)
		{
			$src  = Path::clean($path . '/' . $src);
			$dest = Path::clean($path . '/' . $dest);
		}

		// Check src path
		if (!is_readable($src))
		{
			return 'Cannot find source file.';
		}

		if ($useStreams)
		{
			$stream = Stream::getStream();

			if (!$stream->move($src, $dest, null, false))
			{
				throw new FilesystemException(__METHOD__ . ': ' .
$stream->getError());
			}

			return true;
		}

		if (!@ rename($src, $dest))
		{
			throw new FilesystemException(__METHOD__ . ': Rename
failed.');
		}

		return true;
	}

	/**
	 * Write contents to a file
	 *
	 * @param   string   $file          The full file path
	 * @param   string   $buffer        The buffer to write
	 * @param   boolean  $useStreams    Use streams
	 * @param   boolean  $appendToFile  Append to the file and not overwrite
it.
	 *
	 * @return  boolean  True on success
	 *
	 * @since   1.0
	 */
	public static function write($file, &$buffer, $useStreams = false,
$appendToFile = false)
	{
		@set_time_limit(ini_get('max_execution_time'));

		// If the destination directory doesn't exist we need to create it
		if (!file_exists(\dirname($file)))
		{
			Folder::create(\dirname($file));
		}

		if ($useStreams)
		{
			$stream = Stream::getStream();

			// Beef up the chunk size to a meg
			$stream->set('chunksize', (1024 * 1024));
			$stream->writeFile($file, $buffer, $appendToFile);

			return true;
		}

		$file = Path::clean($file);

		// Set the required flag to only append to the file and not overwrite it
		if ($appendToFile === true)
		{
			return \is_int(file_put_contents($file, $buffer, \FILE_APPEND));
		}

		return \is_int(file_put_contents($file, $buffer));
	}

	/**
	 * Moves an uploaded file to a destination folder
	 *
	 * @param   string   $src         The name of the php (temporary) uploaded
file
	 * @param   string   $dest        The path (including filename) to move
the uploaded file to
	 * @param   boolean  $useStreams  True to use streams
	 *
	 * @return  boolean  True on success
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public static function upload($src, $dest, $useStreams = false)
	{
		// Ensure that the path is valid and clean
		$dest = Path::clean($dest);

		// Create the destination directory if it does not exist
		$baseDir = \dirname($dest);

		if (!is_dir($baseDir))
		{
			Folder::create($baseDir);
		}

		if ($useStreams)
		{
			$stream = Stream::getStream();

			if (!$stream->upload($src, $dest, null, false))
			{
				throw new FilesystemException(sprintf('%1$s(%2$s, %3$s):
%4$s', __METHOD__, $src, $dest, $stream->getError()));
			}

			return true;
		}

		if (is_writable($baseDir) && move_uploaded_file($src, $dest))
		{
			// Short circuit to prevent file permission errors
			if (Path::setPermissions($dest))
			{
				return true;
			}

			throw new FilesystemException(__METHOD__ . ': Failed to change file
permissions.');
		}

		throw new FilesystemException(__METHOD__ . ': Failed to move
file.');
	}
}
src/Folder.php000064400000034556151170271470007301 0ustar00<?php
/**
 * Part of the Joomla Framework Filesystem Package
 *
 * @copyright  Copyright (C) 2005 - 2020 Open Source Matters, Inc. All
rights reserved.
 * @license    GNU General Public License version 2 or later; see LICENSE
 */

namespace Joomla\Filesystem;

use Joomla\Filesystem\Exception\FilesystemException;

/**
 * A Folder handling class
 *
 * @since  1.0
 */
abstract class Folder
{
	/**
	 * Copy a folder.
	 *
	 * @param   string   $src         The path to the source folder.
	 * @param   string   $dest        The path to the destination folder.
	 * @param   string   $path        An optional base path to prefix to the
file names.
	 * @param   boolean  $force       Force copy.
	 * @param   boolean  $useStreams  Optionally force folder/file overwrites.
	 *
	 * @return  boolean  True on success.
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public static function copy($src, $dest, $path = '', $force =
false, $useStreams = false)
	{
		@set_time_limit(ini_get('max_execution_time'));

		if ($path)
		{
			$src  = Path::clean($path . '/' . $src);
			$dest = Path::clean($path . '/' . $dest);
		}

		// Eliminate trailing directory separators, if any
		$src  = rtrim($src, \DIRECTORY_SEPARATOR);
		$dest = rtrim($dest, \DIRECTORY_SEPARATOR);

		if (!is_dir(Path::clean($src)))
		{
			throw new FilesystemException('Source folder not found', -1);
		}

		if (is_dir(Path::clean($dest)) && !$force)
		{
			throw new FilesystemException('Destination folder not found',
-1);
		}

		// Make sure the destination exists
		if (!self::create($dest))
		{
			throw new FilesystemException('Cannot create destination
folder', -1);
		}

		if (!($dh = @opendir($src)))
		{
			throw new FilesystemException('Cannot open source folder',
-1);
		}

		// Walk through the directory copying files and recursing into folders.
		while (($file = readdir($dh)) !== false)
		{
			$sfid = $src . '/' . $file;
			$dfid = $dest . '/' . $file;

			switch (filetype($sfid))
			{
				case 'dir':
					if ($file != '.' && $file != '..')
					{
						$ret = self::copy($sfid, $dfid, null, $force, $useStreams);

						if ($ret !== true)
						{
							return $ret;
						}
					}

					break;

				case 'file':
					if ($useStreams)
					{
						Stream::getStream()->copy($sfid, $dfid);
					}
					else
					{
						if (!@copy($sfid, $dfid))
						{
							throw new FilesystemException('Copy file failed', -1);
						}
					}

					break;
			}
		}

		return true;
	}

	/**
	 * Create a folder -- and all necessary parent folders.
	 *
	 * @param   string   $path  A path to create from the base path.
	 * @param   integer  $mode  Directory permissions to set for folders
created. 0755 by default.
	 *
	 * @return  boolean  True if successful.
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public static function create($path = '', $mode = 0755)
	{
		static $nested = 0;

		// Check to make sure the path valid and clean
		$path = Path::clean($path);

		// Check if parent dir exists
		$parent = \dirname($path);

		if (!is_dir(Path::clean($parent)))
		{
			// Prevent infinite loops!
			$nested++;

			if (($nested > 20) || ($parent == $path))
			{
				throw new FilesystemException(__METHOD__ . ': Infinite loop
detected');
			}

			try
			{
				// Create the parent directory
				if (self::create($parent, $mode) !== true)
				{
					// Folder::create throws an error
					$nested--;

					return false;
				}
			}
			catch (FilesystemException $exception)
			{
				$nested--;

				throw $exception;
			}

			// OK, parent directory has been created
			$nested--;
		}

		// Check if dir already exists
		if (is_dir(Path::clean($path)))
		{
			return true;
		}

		// We need to get and explode the open_basedir paths
		$obd = ini_get('open_basedir');

		// If open_basedir is set we need to get the open_basedir that the path
is in
		if ($obd != null)
		{
			if (\defined('PHP_WINDOWS_VERSION_MAJOR'))
			{
				$obdSeparator = ';';
			}
			else
			{
				$obdSeparator = ':';
			}

			// Create the array of open_basedir paths
			$obdArray  = explode($obdSeparator, $obd);
			$inBaseDir = false;

			// Iterate through open_basedir paths looking for a match
			foreach ($obdArray as $test)
			{
				$test = Path::clean($test);

				if (strpos($path, $test) === 0 || strpos($path, realpath($test)) === 0)
				{
					$inBaseDir = true;

					break;
				}
			}

			if ($inBaseDir == false)
			{
				// Throw a FilesystemException because the path to be created is not in
open_basedir
				throw new FilesystemException(__METHOD__ . ': Path not in
open_basedir paths');
			}
		}

		// First set umask
		$origmask = @umask(0);

		// Create the path
		if (!$ret = @mkdir($path, $mode))
		{
			@umask($origmask);

			throw new FilesystemException(__METHOD__ . ': Could not create
directory.  Path: ' . $path);
		}

		// Reset umask
		@umask($origmask);

		return $ret;
	}

	/**
	 * Delete a folder.
	 *
	 * @param   string  $path  The path to the folder to delete.
	 *
	 * @return  boolean  True on success.
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 * @throws  \UnexpectedValueException
	 */
	public static function delete($path)
	{
		@set_time_limit(ini_get('max_execution_time'));

		// Sanity check
		if (!$path)
		{
			// Bad programmer! Bad Bad programmer!
			throw new FilesystemException(__METHOD__ . ': You can not delete a
base directory.');
		}

		// Check to make sure the path valid and clean
		$path = Path::clean($path);

		// Is this really a folder?
		if (!is_dir($path))
		{
			throw new \UnexpectedValueException(
				sprintf(
					'%1$s: Path is not a folder. Path: %2$s',
					__METHOD__,
					Path::removeRoot($path)
				)
			);
		}

		// Remove all the files in folder if they exist; disable all filtering
		$files = self::files($path, '.', false, true, array(),
array());

		if (!empty($files))
		{
			if (File::delete($files) !== true)
			{
				// File::delete throws an error
				return false;
			}
		}

		// Remove sub-folders of folder; disable all filtering
		$folders = self::folders($path, '.', false, true, array(),
array());

		foreach ($folders as $folder)
		{
			if (is_link($folder))
			{
				// Don't descend into linked directories, just delete the link.
				if (File::delete($folder) !== true)
				{
					// File::delete throws an error
					return false;
				}
			}
			elseif (self::delete($folder) !== true)
			{
				// Folder::delete throws an error
				return false;
			}
		}

		// In case of restricted permissions we zap it one way or the other as
long as the owner is either the webserver or the ftp.
		if (@rmdir($path))
		{
			return true;
		}

		throw new FilesystemException(sprintf('%1$s: Could not delete
folder. Path: %2$s', __METHOD__, $path));
	}

	/**
	 * Moves a folder.
	 *
	 * @param   string   $src         The path to the source folder.
	 * @param   string   $dest        The path to the destination folder.
	 * @param   string   $path        An optional base path to prefix to the
file names.
	 * @param   boolean  $useStreams  Optionally use streams.
	 *
	 * @return  string|boolean  Error message on false or boolean true on
success.
	 *
	 * @since   1.0
	 */
	public static function move($src, $dest, $path = '', $useStreams
= false)
	{
		if ($path)
		{
			$src  = Path::clean($path . '/' . $src);
			$dest = Path::clean($path . '/' . $dest);
		}

		if (!is_dir(Path::clean($src)))
		{
			return 'Cannot find source folder';
		}

		if (is_dir(Path::clean($dest)))
		{
			return 'Folder already exists';
		}

		if ($useStreams)
		{
			Stream::getStream()->move($src, $dest);

			return true;
		}

		if (!@rename($src, $dest))
		{
			return 'Rename failed';
		}

		return true;
	}

	/**
	 * Utility function to read the files in a folder.
	 *
	 * @param   string   $path           The path of the folder to read.
	 * @param   string   $filter         A filter for file names.
	 * @param   mixed    $recurse        True to recursively search into
sub-folders, or an integer to specify the maximum depth.
	 * @param   boolean  $full           True to return the full path to the
file.
	 * @param   array    $exclude        Array with names of files which
should not be shown in the result.
	 * @param   array    $excludeFilter  Array of filter to exclude
	 *
	 * @return  array  Files in the given folder.
	 *
	 * @since   1.0
	 * @throws  \UnexpectedValueException
	 */
	public static function files($path, $filter = '.', $recurse =
false, $full = false, $exclude = array('.svn', 'CVS',
'.DS_Store', '__MACOSX'),
		$excludeFilter = array('^\..*', '.*~')
	)
	{
		// Check to make sure the path valid and clean
		$path = Path::clean($path);

		// Is the path a folder?
		if (!is_dir($path))
		{
			throw new \UnexpectedValueException(
				sprintf(
					'%1$s: Path is not a folder. Path: %2$s',
					__METHOD__,
					Path::removeRoot($path)
				)
			);
		}

		// Compute the excludefilter string
		if (\count($excludeFilter))
		{
			$excludeFilterString = '/(' . implode('|',
$excludeFilter) . ')/';
		}
		else
		{
			$excludeFilterString = '';
		}

		// Get the files
		$arr = self::_items($path, $filter, $recurse, $full, $exclude,
$excludeFilterString, true);

		// Sort the files
		asort($arr);

		return array_values($arr);
	}

	/**
	 * Utility function to read the folders in a folder.
	 *
	 * @param   string   $path           The path of the folder to read.
	 * @param   string   $filter         A filter for folder names.
	 * @param   mixed    $recurse        True to recursively search into
sub-folders, or an integer to specify the maximum depth.
	 * @param   boolean  $full           True to return the full path to the
folders.
	 * @param   array    $exclude        Array with names of folders which
should not be shown in the result.
	 * @param   array    $excludeFilter  Array with regular expressions
matching folders which should not be shown in the result.
	 *
	 * @return  array  Folders in the given folder.
	 *
	 * @since   1.0
	 * @throws  \UnexpectedValueException
	 */
	public static function folders($path, $filter = '.', $recurse =
false, $full = false, $exclude = array('.svn', 'CVS',
'.DS_Store', '__MACOSX'),
		$excludeFilter = array('^\..*')
	)
	{
		// Check to make sure the path valid and clean
		$path = Path::clean($path);

		// Is the path a folder?
		if (!is_dir($path))
		{
			throw new \UnexpectedValueException(
				sprintf(
					'%1$s: Path is not a folder. Path: %2$s',
					__METHOD__,
					Path::removeRoot($path)
				)
			);
		}

		// Compute the excludefilter string
		if (\count($excludeFilter))
		{
			$excludeFilterString = '/(' . implode('|',
$excludeFilter) . ')/';
		}
		else
		{
			$excludeFilterString = '';
		}

		// Get the folders
		$arr = self::_items($path, $filter, $recurse, $full, $exclude,
$excludeFilterString, false);

		// Sort the folders
		asort($arr);

		return array_values($arr);
	}

	/**
	 * Function to read the files/folders in a folder.
	 *
	 * @param   string   $path                 The path of the folder to read.
	 * @param   string   $filter               A filter for file names.
	 * @param   mixed    $recurse              True to recursively search into
sub-folders, or an integer to specify the maximum depth.
	 * @param   boolean  $full                 True to return the full path to
the file.
	 * @param   array    $exclude              Array with names of files which
should not be shown in the result.
	 * @param   string   $excludeFilterString  Regexp of files to exclude
	 * @param   boolean  $findfiles            True to read the files, false
to read the folders
	 *
	 * @return  array  Files.
	 *
	 * @since   1.0
	 */
	protected static function _items($path, $filter, $recurse, $full,
$exclude, $excludeFilterString, $findfiles)
	{
		@set_time_limit(ini_get('max_execution_time'));

		$arr = array();

		// Read the source directory
		if (!($handle = @opendir($path)))
		{
			return $arr;
		}

		while (($file = readdir($handle)) !== false)
		{
			if ($file != '.' && $file != '..' &&
!\in_array($file, $exclude)
				&& (empty($excludeFilterString) ||
!preg_match($excludeFilterString, $file)))
			{
				// Compute the fullpath
				$fullpath = Path::clean($path . '/' . $file);

				// Compute the isDir flag
				$isDir = is_dir($fullpath);

				if (($isDir xor $findfiles) &&
preg_match("/$filter/", $file))
				{
					// (fullpath is dir and folders are searched or fullpath is not dir
and files are searched) and file matches the filter
					if ($full)
					{
						// Full path is requested
						$arr[] = $fullpath;
					}
					else
					{
						// Filename is requested
						$arr[] = $file;
					}
				}

				if ($isDir && $recurse)
				{
					// Search recursively
					if (\is_int($recurse))
					{
						// Until depth 0 is reached
						$arr = array_merge($arr, self::_items($fullpath, $filter, $recurse -
1, $full, $exclude, $excludeFilterString, $findfiles));
					}
					else
					{
						$arr = array_merge($arr, self::_items($fullpath, $filter, $recurse,
$full, $exclude, $excludeFilterString, $findfiles));
					}
				}
			}
		}

		closedir($handle);

		return $arr;
	}

	/**
	 * Lists folder in format suitable for tree display.
	 *
	 * @param   string   $path      The path of the folder to read.
	 * @param   string   $filter    A filter for folder names.
	 * @param   integer  $maxLevel  The maximum number of levels to
recursively read, defaults to three.
	 * @param   integer  $level     The current level, optional.
	 * @param   integer  $parent    Unique identifier of the parent folder, if
any.
	 *
	 * @return  array  Folders in the given folder.
	 *
	 * @since   1.0
	 */
	public static function listFolderTree($path, $filter, $maxLevel = 3,
$level = 0, $parent = 0)
	{
		$dirs = array();

		if ($level == 0)
		{
			$GLOBALS['_JFolder_folder_tree_index'] = 0;
		}

		if ($level < $maxLevel)
		{
			$folders = self::folders($path, $filter);

			// First path, index foldernames
			foreach ($folders as $name)
			{
				$id       = ++$GLOBALS['_JFolder_folder_tree_index'];
				$fullName = Path::clean($path . '/' . $name);
				$dirs[]   = array(
					'id'       => $id,
					'parent'   => $parent,
					'name'     => $name,
					'fullname' => $fullName,
					'relname'  => str_replace(JPATH_ROOT, '',
$fullName),
				);
				$dirs2 = self::listFolderTree($fullName, $filter, $maxLevel, $level +
1, $id);
				$dirs  = array_merge($dirs, $dirs2);
			}
		}

		return $dirs;
	}

	/**
	 * Makes path name safe to use.
	 *
	 * @param   string  $path  The full path to sanitise.
	 *
	 * @return  string  The sanitised string.
	 *
	 * @since   1.0
	 */
	public static function makeSafe($path)
	{
		$regex =
array('#[^A-Za-z0-9_\\\/\(\)\[\]\{\}\#\$\^\+\.\'~`!@&=;,-]#');

		return preg_replace($regex, '', $path);
	}
}
src/Helper.php000064400000012164151170271470007274 0ustar00<?php
/**
 * Part of the Joomla Framework Filesystem Package
 *
 * @copyright  Copyright (C) 2005 - 2020 Open Source Matters, Inc. All
rights reserved.
 * @license    GNU General Public License version 2 or later; see LICENSE
 */

namespace Joomla\Filesystem;

/**
 * File system helper
 *
 * Holds support functions for the filesystem, particularly the stream
 *
 * @since  1.0
 */
class Helper
{
	/**
	 * Remote file size function for streams that don't support it
	 *
	 * @param   string  $url  TODO Add text
	 *
	 * @return  mixed
	 *
	 * @link    https://www.php.net/manual/en/function.filesize.php#71098
	 * @since   1.0
	 */
	public static function remotefsize($url)
	{
		$sch = parse_url($url, \PHP_URL_SCHEME);

		if (!\in_array($sch, array('http', 'https',
'ftp', 'ftps'), true))
		{
			return false;
		}

		if (\in_array($sch, array('http', 'https'), true))
		{
			$headers = @ get_headers($url, 1);

			if (!$headers || (!\array_key_exists('Content-Length',
$headers)))
			{
				return false;
			}

			return $headers['Content-Length'];
		}

		if (\in_array($sch, array('ftp', 'ftps'), true))
		{
			$server = parse_url($url, \PHP_URL_HOST);
			$port   = parse_url($url, \PHP_URL_PORT);
			$path   = parse_url($url, \PHP_URL_PATH);
			$user   = parse_url($url, \PHP_URL_USER);
			$pass   = parse_url($url, \PHP_URL_PASS);

			if ((!$server) || (!$path))
			{
				return false;
			}

			if (!$port)
			{
				$port = 21;
			}

			if (!$user)
			{
				$user = 'anonymous';
			}

			if (!$pass)
			{
				$pass = '';
			}

			$ftpid = null;

			switch ($sch)
			{
				case 'ftp':
					$ftpid = @ftp_connect($server, $port);

					break;

				case 'ftps':
					$ftpid = @ftp_ssl_connect($server, $port);

					break;
			}

			if (!$ftpid)
			{
				return false;
			}

			$login = @ftp_login($ftpid, $user, $pass);

			if (!$login)
			{
				return false;
			}

			$ftpsize = ftp_size($ftpid, $path);
			ftp_close($ftpid);

			if ($ftpsize == -1)
			{
				return false;
			}

			return $ftpsize;
		}
	}

	/**
	 * Quick FTP chmod
	 *
	 * @param   string   $url   Link identifier
	 * @param   integer  $mode  The new permissions, given as an octal value.
	 *
	 * @return  integer|boolean
	 *
	 * @link    https://www.php.net/manual/en/function.ftp-chmod.php
	 * @since   1.0
	 */
	public static function ftpChmod($url, $mode)
	{
		$sch = parse_url($url, \PHP_URL_SCHEME);

		if (($sch != 'ftp') && ($sch != 'ftps'))
		{
			return false;
		}

		$server = parse_url($url, \PHP_URL_HOST);
		$port   = parse_url($url, \PHP_URL_PORT);
		$path   = parse_url($url, \PHP_URL_PATH);
		$user   = parse_url($url, \PHP_URL_USER);
		$pass   = parse_url($url, \PHP_URL_PASS);

		if ((!$server) || (!$path))
		{
			return false;
		}

		if (!$port)
		{
			$port = 21;
		}

		if (!$user)
		{
			$user = 'anonymous';
		}

		if (!$pass)
		{
			$pass = '';
		}

		$ftpid = null;

		switch ($sch)
		{
			case 'ftp':
				$ftpid = @ftp_connect($server, $port);

				break;

			case 'ftps':
				$ftpid = @ftp_ssl_connect($server, $port);

				break;
		}

		if (!$ftpid)
		{
			return false;
		}

		$login = @ftp_login($ftpid, $user, $pass);

		if (!$login)
		{
			return false;
		}

		$res = @ftp_chmod($ftpid, $mode, $path);
		ftp_close($ftpid);

		return $res;
	}

	/**
	 * Modes that require a write operation
	 *
	 * @return  array
	 *
	 * @since   1.0
	 */
	public static function getWriteModes()
	{
		return array('w', 'w+', 'a',
'a+', 'r+', 'x', 'x+');
	}

	/**
	 * Stream and Filter Support Operations
	 *
	 * Returns the supported streams, in addition to direct file access
	 * Also includes Joomla! streams as well as PHP streams
	 *
	 * @return  array  Streams
	 *
	 * @since   1.0
	 */
	public static function getSupported()
	{
		// Really quite cool what php can do with arrays when you let it...
		static $streams;

		if (!$streams)
		{
			$streams = array_merge(stream_get_wrappers(), self::getJStreams());
		}

		return $streams;
	}

	/**
	 * Returns a list of transports
	 *
	 * @return  array
	 *
	 * @since   1.0
	 */
	public static function getTransports()
	{
		// Is this overkill?
		return stream_get_transports();
	}

	/**
	 * Returns a list of filters
	 *
	 * @return  array
	 *
	 * @since   1.0
	 */
	public static function getFilters()
	{
		// Note: This will look like the getSupported() function with J! filters.
		// TODO: add user space filter loading like user space stream loading
		return stream_get_filters();
	}

	/**
	 * Returns a list of J! streams
	 *
	 * @return  array
	 *
	 * @since   1.0
	 */
	public static function getJStreams()
	{
		static $streams = array();

		if (!$streams)
		{
			$files = new \DirectoryIterator(__DIR__ . '/Stream');

			/** @var $file \DirectoryIterator */
			foreach ($files as $file)
			{
				// Only load for php files.
				if (!$file->isFile() || $file->getExtension() != 'php')
				{
					continue;
				}

				$streams[] = $file->getBasename('.php');
			}
		}

		return $streams;
	}

	/**
	 * Determine if a stream is a Joomla stream.
	 *
	 * @param   string  $streamname  The name of a stream
	 *
	 * @return  boolean  True for a Joomla Stream
	 *
	 * @since   1.0
	 */
	public static function isJoomlaStream($streamname)
	{
		return \in_array($streamname, self::getJStreams());
	}
}
src/Patcher.php000064400000026641151170271470007450 0ustar00<?php
/**
 * Part of the Joomla Framework Filesystem Package
 *
 * @copyright  Copyright (C) 2005 - 2020 Open Source Matters, Inc. All
rights reserved.
 * @license    GNU General Public License version 2 or later; see LICENSE
 */

namespace Joomla\Filesystem;

/**
 * A Unified Diff Format Patcher class
 *
 * @link   http://sourceforge.net/projects/phppatcher/ This has been
derived from the PhpPatcher version 0.1.1 written by Giuseppe Mazzotta
 * @since  1.0
 */
class Patcher
{
	/**
	 * Regular expression for searching source files
	 *
	 * @var    string
	 * @since  1.0
	 */
	const SRC_FILE =
'/^---\\s+(\\S+)\s+\\d{1,4}-\\d{1,2}-\\d{1,2}\\s+\\d{1,2}:\\d{1,2}:\\d{1,2}(\\.\\d+)?\\s+(\+|-)\\d{4}/A';

	/**
	 * Regular expression for searching destination files
	 *
	 * @var    string
	 * @since  1.0
	 */
	const DST_FILE =
'/^\\+\\+\\+\\s+(\\S+)\s+\\d{1,4}-\\d{1,2}-\\d{1,2}\\s+\\d{1,2}:\\d{1,2}:\\d{1,2}(\\.\\d+)?\\s+(\+|-)\\d{4}/A';

	/**
	 * Regular expression for searching hunks of differences
	 *
	 * @var    string
	 * @since  1.0
	 */
	const HUNK = '/@@
-(\\d+)(,(\\d+))?\\s+\\+(\\d+)(,(\\d+))?\\s+@@($)/A';

	/**
	 * Regular expression for splitting lines
	 *
	 * @var    string
	 * @since  1.0
	 */
	const SPLIT = '/(\r\n)|(\r)|(\n)/';

	/**
	 * Source files
	 *
	 * @var    array
	 * @since  1.0
	 */
	protected $sources = array();

	/**
	 * Destination files
	 *
	 * @var    array
	 * @since  1.0
	 */
	protected $destinations = array();

	/**
	 * Removal files
	 *
	 * @var    array
	 * @since  1.0
	 */
	protected $removals = array();

	/**
	 * Patches
	 *
	 * @var    array
	 * @since  1.0
	 */
	protected $patches = array();

	/**
	 * Singleton instance of this class
	 *
	 * @var    Patcher
	 * @since  1.0
	 */
	protected static $instance;

	/**
	 * Constructor
	 *
	 * The constructor is protected to force the use of Patcher::getInstance()
	 *
	 * @since   1.0
	 */
	protected function __construct()
	{
	}

	/**
	 * Method to get a patcher
	 *
	 * @return  Patcher  an instance of the patcher
	 *
	 * @since   1.0
	 */
	public static function getInstance()
	{
		if (!isset(static::$instance))
		{
			static::$instance = new static;
		}

		return static::$instance;
	}

	/**
	 * Reset the patcher
	 *
	 * @return  Patcher  This object for chaining
	 *
	 * @since   1.0
	 */
	public function reset()
	{
		$this->sources      = array();
		$this->destinations = array();
		$this->removals     = array();
		$this->patches      = array();

		return $this;
	}

	/**
	 * Apply the patches
	 *
	 * @return  integer  The number of files patched
	 *
	 * @since   1.0
	 * @throws  \RuntimeException
	 */
	public function apply()
	{
		foreach ($this->patches as $patch)
		{
			// Separate the input into lines
			$lines = self::splitLines($patch['udiff']);

			// Loop for each header
			while (self::findHeader($lines, $src, $dst))
			{
				$done = false;

				if ($patch['strip'] === null)
				{
					$src = $patch['root'] .
preg_replace('#^([^/]*/)*#', '', $src);
					$dst = $patch['root'] .
preg_replace('#^([^/]*/)*#', '', $dst);
				}
				else
				{
					$src = $patch['root'] . preg_replace('#^([^/]*/){'
. (int) $patch['strip'] . '}#', '', $src);
					$dst = $patch['root'] . preg_replace('#^([^/]*/){'
. (int) $patch['strip'] . '}#', '', $dst);
				}

				// Loop for each hunk of differences
				while (self::findHunk($lines, $srcLine, $srcSize, $dstLine, $dstSize))
				{
					$done = true;

					// Apply the hunk of differences
					$this->applyHunk($lines, $src, $dst, $srcLine, $srcSize, $dstLine,
$dstSize);
				}

				// If no modifications were found, throw an exception
				if (!$done)
				{
					throw new \RuntimeException('Invalid Diff');
				}
			}
		}

		// Initialize the counter
		$done = 0;

		// Patch each destination file
		foreach ($this->destinations as $file => $content)
		{
			$content = implode("\n", $content);

			if (File::write($file, $content))
			{
				if (isset($this->sources[$file]))
				{
					$this->sources[$file] = $content;
				}

				$done++;
			}
		}

		// Remove each removed file
		foreach ($this->removals as $file)
		{
			if (File::delete($file))
			{
				if (isset($this->sources[$file]))
				{
					unset($this->sources[$file]);
				}

				$done++;
			}
		}

		// Clear the destinations cache
		$this->destinations = array();

		// Clear the removals
		$this->removals = array();

		// Clear the patches
		$this->patches = array();

		return $done;
	}

	/**
	 * Add a unified diff file to the patcher
	 *
	 * @param   string   $filename  Path to the unified diff file
	 * @param   string   $root      The files root path
	 * @param   integer  $strip     The number of '/' to strip
	 *
	 * @return	Patcher  $this for chaining
	 *
	 * @since   1.0
	 */
	public function addFile($filename, $root = JPATH_ROOT, $strip = 0)
	{
		return $this->add(file_get_contents($filename), $root, $strip);
	}

	/**
	 * Add a unified diff string to the patcher
	 *
	 * @param   string   $udiff  Unified diff input string
	 * @param   string   $root   The files root path
	 * @param   integer  $strip  The number of '/' to strip
	 *
	 * @return	Patcher  $this for chaining
	 *
	 * @since   1.0
	 */
	public function add($udiff, $root = JPATH_ROOT, $strip = 0)
	{
		$this->patches[] = array(
			'udiff' => $udiff,
			'root'  => isset($root) ? rtrim($root,
\DIRECTORY_SEPARATOR) . \DIRECTORY_SEPARATOR : '',
			'strip' => $strip,
		);

		return $this;
	}

	/**
	 * Separate CR or CRLF lines
	 *
	 * @param   string  $data  Input string
	 *
	 * @return  array  The lines of the input destination file
	 *
	 * @since   1.0
	 */
	protected static function splitLines($data)
	{
		return preg_split(self::SPLIT, $data);
	}

	/**
	 * Find the diff header
	 *
	 * The internal array pointer of $lines is on the next line after the
finding
	 *
	 * @param   array   $lines  The udiff array of lines
	 * @param   string  $src    The source file
	 * @param   string  $dst    The destination file
	 *
	 * @return  boolean  TRUE in case of success, FALSE in case of failure
	 *
	 * @since   1.0
	 * @throws  \RuntimeException
	 */
	protected static function findHeader(&$lines, &$src, &$dst)
	{
		// Get the current line
		$line = current($lines);

		// Search for the header
		while ($line !== false && !preg_match(self::SRC_FILE, $line, $m))
		{
			$line = next($lines);
		}

		if ($line === false)
		{
			// No header found, return false
			return false;
		}

		// Set the source file
		$src = $m[1];

		// Advance to the next line
		$line = next($lines);

		if ($line === false)
		{
			throw new \RuntimeException('Unexpected EOF');
		}

		// Search the destination file
		if (!preg_match(self::DST_FILE, $line, $m))
		{
			throw new \RuntimeException('Invalid Diff file');
		}

		// Set the destination file
		$dst = $m[1];

		// Advance to the next line
		if (next($lines) === false)
		{
			throw new \RuntimeException('Unexpected EOF');
		}

		return true;
	}

	/**
	 * Find the next hunk of difference
	 *
	 * The internal array pointer of $lines is on the next line after the
finding
	 *
	 * @param   array   $lines    The udiff array of lines
	 * @param   string  $srcLine  The beginning of the patch for the source
file
	 * @param   string  $srcSize  The size of the patch for the source file
	 * @param   string  $dstLine  The beginning of the patch for the
destination file
	 * @param   string  $dstSize  The size of the patch for the destination
file
	 *
	 * @return  boolean  TRUE in case of success, false in case of failure
	 *
	 * @since   1.0
	 * @throws  \RuntimeException
	 */
	protected static function findHunk(&$lines, &$srcLine,
&$srcSize, &$dstLine, &$dstSize)
	{
		$line = current($lines);

		if (preg_match(self::HUNK, $line, $m))
		{
			$srcLine = (int) $m[1];

			if ($m[3] === '')
			{
				$srcSize = 1;
			}
			else
			{
				$srcSize = (int) $m[3];
			}

			$dstLine = (int) $m[4];

			if ($m[6] === '')
			{
				$dstSize = 1;
			}
			else
			{
				$dstSize = (int) $m[6];
			}

			if (next($lines) === false)
			{
				throw new \RuntimeException('Unexpected EOF');
			}

			return true;
		}

		return false;
	}

	/**
	 * Apply the patch
	 *
	 * @param   array   $lines    The udiff array of lines
	 * @param   string  $src      The source file
	 * @param   string  $dst      The destination file
	 * @param   string  $srcLine  The beginning of the patch for the source
file
	 * @param   string  $srcSize  The size of the patch for the source file
	 * @param   string  $dstLine  The beginning of the patch for the
destination file
	 * @param   string  $dstSize  The size of the patch for the destination
file
	 *
	 * @return  void
	 *
	 * @since   1.0
	 * @throws  \RuntimeException
	 */
	protected function applyHunk(&$lines, $src, $dst, $srcLine, $srcSize,
$dstLine, $dstSize)
	{
		$srcLine--;
		$dstLine--;
		$line = current($lines);

		// Source lines (old file)
		$source = array();

		// New lines (new file)
		$destin  = array();
		$srcLeft = $srcSize;
		$dstLeft = $dstSize;

		do
		{
			if (!isset($line[0]))
			{
				$source[] = '';
				$destin[] = '';
				$srcLeft--;
				$dstLeft--;
			}
			elseif ($line[0] == '-')
			{
				if ($srcLeft == 0)
				{
					throw new \RuntimeException('Unexpected remove line at line
' . key($lines));
				}

				$source[] = substr($line, 1);
				$srcLeft--;
			}
			elseif ($line[0] == '+')
			{
				if ($dstLeft == 0)
				{
					throw new \RuntimeException('Unexpected add line at line ' .
key($lines));
				}

				$destin[] = substr($line, 1);
				$dstLeft--;
			}
			elseif ($line != '\\ No newline at end of file')
			{
				$line     = substr($line, 1);
				$source[] = $line;
				$destin[] = $line;
				$srcLeft--;
				$dstLeft--;
			}

			if ($srcLeft == 0 && $dstLeft == 0)
			{
				// Now apply the patch, finally!
				if ($srcSize > 0)
				{
					$srcLines = & $this->getSource($src);

					if (!isset($srcLines))
					{
						throw new \RuntimeException(
							'Unexisting source file: ' . Path::removeRoot($src)
						);
					}
				}

				if ($dstSize > 0)
				{
					if ($srcSize > 0)
					{
						$dstLines  = & $this->getDestination($dst, $src);
						$srcBottom = $srcLine + \count($source);

						for ($l = $srcLine; $l < $srcBottom; $l++)
						{
							if ($srcLines[$l] != $source[$l - $srcLine])
							{
								throw new \RuntimeException(
									sprintf(
										'Failed source verification of file %1$s at line %2$s',
										Path::removeRoot($src),
										$l
									)
								);
							}
						}

						array_splice($dstLines, $dstLine, \count($source), $destin);
					}
					else
					{
						$this->destinations[$dst] = $destin;
					}
				}
				else
				{
					$this->removals[] = $src;
				}

				next($lines);

				return;
			}

			$line = next($lines);
		}
		while ($line !== false);

		throw new \RuntimeException('Unexpected EOF');
	}

	/**
	 * Get the lines of a source file
	 *
	 * @param   string  $src  The path of a file
	 *
	 * @return  array  The lines of the source file
	 *
	 * @since   1.0
	 */
	protected function &getSource($src)
	{
		if (!isset($this->sources[$src]))
		{
			if (is_readable($src))
			{
				$this->sources[$src] = self::splitLines(file_get_contents($src));
			}
			else
			{
				$this->sources[$src] = null;
			}
		}

		return $this->sources[$src];
	}

	/**
	 * Get the lines of a destination file
	 *
	 * @param   string  $dst  The path of a destination file
	 * @param   string  $src  The path of a source file
	 *
	 * @return  array  The lines of the destination file
	 *
	 * @since   1.0
	 */
	protected function &getDestination($dst, $src)
	{
		if (!isset($this->destinations[$dst]))
		{
			$this->destinations[$dst] = $this->getSource($src);
		}

		return $this->destinations[$dst];
	}
}
src/Path.php000064400000022027151170271470006750 0ustar00<?php
/**
 * Part of the Joomla Framework Filesystem Package
 *
 * @copyright  Copyright (C) 2005 - 2020 Open Source Matters, Inc. All
rights reserved.
 * @license    GNU General Public License version 2 or later; see LICENSE
 */

namespace Joomla\Filesystem;

use Joomla\Filesystem\Exception\FilesystemException;

if (!\defined('JPATH_ROOT'))
{
	throw new \LogicException('The "JPATH_ROOT" constant must
be defined for your application.');
}

/**
 * A Path handling class
 *
 * @since  1.0
 */
class Path
{
	/**
	 * Checks if a path's permissions can be changed.
	 *
	 * @param   string  $path  Path to check.
	 *
	 * @return  boolean  True if path can have mode changed.
	 *
	 * @since   1.0
	 */
	public static function canChmod($path)
	{
		if (!file_exists($path))
		{
			return false;
		}

		$perms = @fileperms($path);

		if ($perms !== false)
		{
			if (@chmod($path, $perms ^ 0001))
			{
				@chmod($path, $perms);

				return true;
			}
		}

		return false;
	}

	/**
	 * Chmods files and directories recursively to given permissions.
	 *
	 * @param   string  $path        Root path to begin changing mode [without
trailing slash].
	 * @param   string  $filemode    Octal representation of the value to
change file mode to [null = no change].
	 * @param   string  $foldermode  Octal representation of the value to
change folder mode to [null = no change].
	 *
	 * @return  boolean  True if successful [one fail means the whole
operation failed].
	 *
	 * @since   1.0
	 */
	public static function setPermissions($path, $filemode = '0644',
$foldermode = '0755')
	{
		// Initialise return value
		$ret = true;

		if (is_dir($path))
		{
			$dh = @opendir($path);

			if ($dh)
			{
				while ($file = readdir($dh))
				{
					if ($file != '.' && $file != '..')
					{
						$fullpath = $path . '/' . $file;

						if (is_dir($fullpath))
						{
							if (!static::setPermissions($fullpath, $filemode, $foldermode))
							{
								$ret = false;
							}
						}
						else
						{
							if (isset($filemode))
							{
								if (!static::canChmod($fullpath) || !@ chmod($fullpath,
octdec($filemode)))
								{
									$ret = false;
								}
							}
						}
					}
				}

				closedir($dh);
			}

			if (isset($foldermode))
			{
				if (!static::canChmod($path) || !@ chmod($path, octdec($foldermode)))
				{
					$ret = false;
				}
			}
		}
		else
		{
			if (isset($filemode))
			{
				if (!static::canChmod($path) || !@ chmod($path, octdec($filemode)))
				{
					$ret = false;
				}
			}
		}

		return $ret;
	}

	/**
	 * Get the permissions of the file/folder at a give path.
	 *
	 * @param   string  $path  The path of a file/folder.
	 *
	 * @return  string  Filesystem permissions.
	 *
	 * @since   1.0
	 */
	public static function getPermissions($path)
	{
		$path = self::clean($path);
		$mode = @ decoct(@ fileperms($path) & 0777);

		if (\strlen($mode) < 3)
		{
			return '---------';
		}

		$parsedMode = '';

		for ($i = 0; $i < 3; $i++)
		{
			// Read
			$parsedMode .= ($mode[$i] & 04) ? 'r' : '-';

			// Write
			$parsedMode .= ($mode[$i] & 02) ? 'w' : '-';

			// Execute
			$parsedMode .= ($mode[$i] & 01) ? 'x' : '-';
		}

		return $parsedMode;
	}

	/**
	 * Checks for snooping outside of the file system root.
	 *
	 * @param   string  $path  A file system path to check.
	 *
	 * @return  string  A cleaned version of the path or exit on error.
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public static function check($path)
	{
		if (strpos($path, '..') !== false)
		{
			throw new FilesystemException(
				sprintf(
					'%s() - Use of relative paths not permitted',
					__METHOD__
				),
				20
			);
		}

		$path = static::clean($path);

		if ((JPATH_ROOT != '') && strpos($path,
static::clean(JPATH_ROOT)) !== 0)
		{
			throw new FilesystemException(
				sprintf(
					'%1$s() - Snooping out of bounds @ %2$s (root %3$s)',
					__METHOD__,
					$path,
					JPATH_ROOT
				),
				20
			);
		}

		return $path;
	}

	/**
	 * Function to strip additional / or \ in a path name.
	 *
	 * @param   string  $path  The path to clean.
	 * @param   string  $ds    Directory separator (optional).
	 *
	 * @return  string  The cleaned path.
	 *
	 * @since   1.0
	 * @throws  \UnexpectedValueException If $path is not a string.
	 */
	public static function clean($path, $ds = \DIRECTORY_SEPARATOR)
	{
		if (!\is_string($path))
		{
			throw new \UnexpectedValueException('JPath::clean $path is not a
string.');
		}

		$stream = explode('://', $path, 2);
		$scheme = '';
		$path   = $stream[0];

		if (\count($stream) >= 2)
		{
			$scheme = $stream[0] . '://';
			$path   = $stream[1];
		}

		$path = trim($path);

		if (empty($path))
		{
			$path = JPATH_ROOT;
		}
		elseif (($ds == '\\') && ($path[0] == '\\')
&& ($path[1] == '\\'))
		{
			// Remove double slashes and backslashes and convert all slashes and
backslashes to DIRECTORY_SEPARATOR
			// If dealing with a UNC path don't forget to prepend the path with
a backslash.
			$path = '\\' . preg_replace('#[/\\\\]+#', $ds,
$path);
		}
		else
		{
			$path = preg_replace('#[/\\\\]+#', $ds, $path);
		}

		return $scheme . $path;
	}

	/**
	 * Method to determine if script owns the path.
	 *
	 * @param   string  $path  Path to check ownership.
	 *
	 * @return  boolean  True if the php script owns the path passed.
	 *
	 * @since   1.0
	 */
	public static function isOwner($path)
	{
		$tmp = md5(random_bytes(16));
		$ssp = ini_get('session.save_path');
		$jtp = JPATH_ROOT;

		// Try to find a writable directory
		$dir = is_writable('/tmp') ? '/tmp' : false;
		$dir = (!$dir && is_writable($ssp)) ? $ssp : $dir;
		$dir = (!$dir && is_writable($jtp)) ? $jtp : $dir;

		if ($dir)
		{
			$test = $dir . '/' . $tmp;

			// Create the test file
			$blank = '';
			File::write($test, $blank, false);

			// Test ownership
			$return = (fileowner($test) == fileowner($path));

			// Delete the test file
			File::delete($test);

			return $return;
		}

		return false;
	}

	/**
	 * Searches the directory paths for a given file.
	 *
	 * @param   mixed   $paths  A path string or array of path strings to
search in
	 * @param   string  $file   The file name to look for.
	 *
	 * @return  string|boolean   The full path and file name for the target
file, or boolean false if the file is not found in any of the paths.
	 *
	 * @since   1.0
	 */
	public static function find($paths, $file)
	{
		// Force to array
		if (!\is_array($paths) && !($paths instanceof \Iterator))
		{
			settype($paths, 'array');
		}

		// Start looping through the path set
		foreach ($paths as $path)
		{
			// Get the path to the file
			$fullname = $path . '/' . $file;

			// Is the path based on a stream?
			if (strpos($path, '://') === false)
			{
				// Not a stream, so do a realpath() to avoid directory
				// traversal attempts on the local file system.

				// Needed for substr() later
				$path     = realpath($path);
				$fullname = realpath($fullname);
			}

			/*
			 * The substr() check added to make sure that the realpath()
			 * results in a directory registered so that
			 * non-registered directories are not accessible via directory
			 * traversal attempts.
			 */
			if (file_exists($fullname) && substr($fullname, 0,
\strlen($path)) == $path)
			{
				return $fullname;
			}
		}

		// Could not find the file in the set of paths
		return false;
	}

	/**
	 * Resolves /./, /../ and multiple / in a string and returns the resulting
absolute path, inspired by Flysystem
	 * Removes trailing slashes
	 *
	 * @param   string   $path   A path to resolve
	 *
	 * @return  string  The resolved path
	 *
	 * @since   1.6.0
	 */
	public static function resolve($path)
	{
		$path = static::clean($path);

		// Save start character for absolute path
		$startCharacter = ($path[0] === DIRECTORY_SEPARATOR) ?
DIRECTORY_SEPARATOR : '';

		$parts = array();

		foreach (explode(DIRECTORY_SEPARATOR, $path) as $part)
		{
			switch ($part)
			{
				case '':
				case '.':
					break;

				case '..':
					if (empty($parts))
					{
						throw new FilesystemException('Path is outside of the defined
root');
					}

					array_pop($parts);
					break;

				default:
					$parts[] = $part;
					break;
			}
		}

		return $startCharacter . implode(DIRECTORY_SEPARATOR, $parts);
	}

	/**
	 * Remove all references to root directory path and the system tmp path
from a message
	 *
	 * @param   string  $message        The message to be cleaned
	 * @param   string  $rootDirectory  Optional root directory, defaults to
JPATH_ROOT
	 *
	 * @return  string
	 *
	 * @since   1.6.2
	 */
	public static function removeRoot($message, $rootDirectory = null)
	{
		if (empty($rootDirectory))
		{
			$rootDirectory = JPATH_ROOT;
		}

		$replacements = array(
			self::makePattern(static::clean($rootDirectory)) =>
'[ROOT]',
			self::makePattern(sys_get_temp_dir())            =>
'[TMP]',
		);

		return preg_replace(array_keys($replacements),
array_values($replacements), $message);
	}

	/**
	 * Turn directory separators into match classes
	 *
	 * @param   string  $dir  A directory name
	 *
	 * @return  string
	 *
	 * @since   1.6.2
	 */
	private static function makePattern($dir)
	{
		return '~' . str_replace('~', '\\~',
preg_replace('~[/\\\\]+~', '[/\\\\\\\\]+', $dir)) .
'~';
	}
}
src/Stream/String.php000064400000001022151170271470010545 0ustar00<?php
/**
 * Part of the Joomla Framework Filesystem Package
 *
 * @copyright  Copyright (C) 2005 - 2020 Open Source Matters, Inc. All
rights reserved.
 * @license    GNU General Public License version 2 or later; see LICENSE
 */

namespace Joomla\Filesystem\Stream;

/**
 * String Stream Wrapper
 *
 * This class allows you to use a PHP string in the same way that
 * you would normally use a regular stream wrapper
 *
 * @since       1.0
 * @deprecated  2.0  Use StringWrapper instead
 */
class String extends StringWrapper
{
}
src/Stream/StringWrapper.php000064400000012402151170271470012112
0ustar00<?php
/**
 * Part of the Joomla Framework Filesystem Package
 *
 * @copyright  Copyright (C) 2005 - 2020 Open Source Matters, Inc. All
rights reserved.
 * @license    GNU General Public License version 2 or later; see LICENSE
 */

namespace Joomla\Filesystem\Stream;

use Joomla\Filesystem\Support\StringController;

/**
 * String Stream Wrapper
 *
 * This class allows you to use a PHP string in the same way that you would
normally use a regular stream wrapper
 *
 * @since  1.3.0
 */
class StringWrapper
{
	/**
	 * The current string
	 *
	 * @var   string
	 * @since  1.3.0
	 */
	protected $currentString;

	/**
	 * The path
	 *
	 * @var   string
	 * @since  1.3.0
	 */
	protected $path;

	/**
	 * The mode
	 *
	 * @var   string
	 * @since  1.3.0
	 */
	protected $mode;

	/**
	 * Enter description here ...
	 *
	 * @var   string
	 * @since  1.3.0
	 */
	protected $options;

	/**
	 * Enter description here ...
	 *
	 * @var   string
	 * @since  1.3.0
	 */
	protected $openedPath;

	/**
	 * Current position
	 *
	 * @var   integer
	 * @since  1.3.0
	 */
	protected $pos;

	/**
	 * Length of the string
	 *
	 * @var   string
	 * @since  1.3.0
	 */
	protected $len;

	/**
	 * Statistics for a file
	 *
	 * @var    array
	 * @since  1.3.0
	 * @link   https://www.php.net/manual/en/function.stat.php
	 */
	protected $stat;

	/**
	 * Method to open a file or URL.
	 *
	 * @param   string   $path        The stream path.
	 * @param   string   $mode        Not used.
	 * @param   integer  $options     Not used.
	 * @param   string   $openedPath  Not used.
	 *
	 * @return  boolean
	 *
	 * @since   1.3.0
	 */
	public function stream_open($path, $mode, $options, &$openedPath)
	{
		$refPath = StringController::getRef(str_replace('string://',
'', $path));

		$this->currentString = &$refPath;

		if ($this->currentString)
		{
			$this->len  = \strlen($this->currentString);
			$this->pos  = 0;
			$this->stat = $this->url_stat($path, 0);

			return true;
		}

		return false;
	}

	/**
	 * Method to retrieve information from a file resource
	 *
	 * @return  array
	 *
	 * @link    https://www.php.net/manual/en/streamwrapper.stream-stat.php
	 * @since   1.3.0
	 */
	public function stream_stat()
	{
		return $this->stat;
	}

	/**
	 * Method to retrieve information about a file.
	 *
	 * @param   string   $path   File path or URL to stat
	 * @param   integer  $flags  Additional flags set by the streams API
	 *
	 * @return  array
	 *
	 * @link    https://www.php.net/manual/en/streamwrapper.url-stat.php
	 * @since   1.3.0
	 */
	public function url_stat($path, $flags = 0)
	{
		$now     = time();
		$refPath = StringController::getRef(str_replace('string://',
'', $path));
		$string  = &$refPath;
		$stat    = array(
			'dev'     => 0,
			'ino'     => 0,
			'mode'    => 0,
			'nlink'   => 1,
			'uid'     => 0,
			'gid'     => 0,
			'rdev'    => 0,
			'size'    => \strlen($string),
			'atime'   => $now,
			'mtime'   => $now,
			'ctime'   => $now,
			'blksize' => '512',
			'blocks'  => ceil(\strlen($string) / 512),
		);

		return $stat;
	}

	/**
	 * Method to read a given number of bytes starting at the current position
	 * and moving to the end of the string defined by the current position
plus the
	 * given number.
	 *
	 * @param   integer  $count  Bytes of data from the current position
should be returned.
	 *
	 * @return  string
	 *
	 * @link    https://www.php.net/manual/en/streamwrapper.stream-read.php
	 * @since   1.3.0
	 */
	public function stream_read($count)
	{
		$result = substr($this->currentString, $this->pos, $count);
		$this->pos += $count;

		return $result;
	}

	/**
	 * Stream write, always returning false.
	 *
	 * @param   string  $data  The data to write.
	 *
	 * @return  boolean
	 *
	 * @since   1.3.0
	 * @note    Updating the string is not supported.
	 */
	public function stream_write($data)
	{
		// We don't support updating the string.
		return false;
	}

	/**
	 * Method to get the current position
	 *
	 * @return  integer  The position
	 *
	 * @since   1.3.0
	 */
	public function stream_tell()
	{
		return $this->pos;
	}

	/**
	 * End of field check
	 *
	 * @return  boolean  True if at end of field.
	 *
	 * @since   1.3.0
	 */
	public function stream_eof()
	{
		if ($this->pos >= $this->len)
		{
			return true;
		}

		return false;
	}

	/**
	 * Stream offset
	 *
	 * @param   integer  $offset  The starting offset.
	 * @param   integer  $whence  SEEK_SET, SEEK_CUR, SEEK_END
	 *
	 * @return  boolean  True on success.
	 *
	 * @since   1.3.0
	 */
	public function stream_seek($offset, $whence)
	{
		// $whence: SEEK_SET, SEEK_CUR, SEEK_END
		if ($offset > $this->len)
		{
			// We can't seek beyond our len.
			return false;
		}

		switch ($whence)
		{
			case \SEEK_SET:
				$this->pos = $offset;

				break;

			case \SEEK_CUR:
				if (($this->pos + $offset) > $this->len)
				{
					return false;
				}

				$this->pos += $offset;

				break;

			case \SEEK_END:
				$this->pos = $this->len - $offset;

				break;
		}

		return true;
	}

	/**
	 * Stream flush, always returns true.
	 *
	 * @return  boolean
	 *
	 * @since   1.3.0
	 * @note    Data storage is not supported
	 */
	public function stream_flush()
	{
		// We don't store data.
		return true;
	}
}

if (!stream_wrapper_register('string',
'\\Joomla\\Filesystem\\Stream\\StringWrapper'))
{
	die('\\Joomla\\Filesystem\\Stream\\StringWrapper Wrapper Registration
Failed');
}
src/Stream.php000064400000112510151170271470007304 0ustar00<?php
/**
 * Part of the Joomla Framework Filesystem Package
 *
 * @copyright  Copyright (C) 2005 - 2020 Open Source Matters, Inc. All
rights reserved.
 * @license    GNU General Public License version 2 or later; see LICENSE
 */

namespace Joomla\Filesystem;

use Joomla\Filesystem\Exception\FilesystemException;

/**
 * Joomla! Stream Interface
 *
 * The Joomla! stream interface is designed to handle files as streams
 * where as the legacy JFile static class treated files in a rather
 * atomic manner.
 *
 * This class adheres to the stream wrapper operations:
 *
 * @link   https://www.php.net/manual/en/function.stream-get-wrappers.php
 * @link   https://www.php.net/manual/en/intro.stream.php PHP Stream Manual
 * @link   https://www.php.net/manual/en/wrappers.php Stream Wrappers
 * @link   https://www.php.net/manual/en/filters.php Stream Filters
 * @link   https://www.php.net/manual/en/transports.php Socket Transports
(used by some options, particularly HTTP proxy)
 * @since  1.0
 */
class Stream
{
	/**
	 * File Mode
	 *
	 * @var    integer
	 * @since  1.0
	 */
	protected $filemode = 0644;

	/**
	 * Directory Mode
	 *
	 * @var    integer
	 * @since  1.0
	 */
	protected $dirmode = 0755;

	/**
	 * Default Chunk Size
	 *
	 * @var    integer
	 * @since  1.0
	 */
	protected $chunksize = 8192;

	/**
	 * Filename
	 *
	 * @var    string
	 * @since  1.0
	 */
	protected $filename;

	/**
	 * Prefix of the connection for writing
	 *
	 * @var    string
	 * @since  1.0
	 */
	protected $writeprefix;

	/**
	 * Prefix of the connection for reading
	 *
	 * @var    string
	 * @since  1.0
	 */
	protected $readprefix;

	/**
	 * Read Processing method
	 *
	 * @var    string  gz, bz, f
	 * If a scheme is detected, fopen will be defaulted
	 * To use compression with a network stream use a filter
	 * @since  1.0
	 */
	protected $processingmethod = 'f';

	/**
	 * Filters applied to the current stream
	 *
	 * @var    array
	 * @since  1.0
	 */
	protected $filters = array();

	/**
	 * File Handle
	 *
	 * @var    resource
	 * @since  1.0
	 */
	protected $fh;

	/**
	 * File size
	 *
	 * @var    integer
	 * @since  1.0
	 */
	protected $filesize;

	/**
	 * Context to use when opening the connection
	 *
	 * @var    string
	 * @since  1.0
	 */
	protected $context;

	/**
	 * Context options; used to rebuild the context
	 *
	 * @var    array
	 * @since  1.0
	 */
	protected $contextOptions;

	/**
	 * The mode under which the file was opened
	 *
	 * @var    string
	 * @since  1.0
	 */
	protected $openmode;

	/**
	 * Constructor
	 *
	 * @param   string  $writeprefix  Prefix of the stream (optional). Unlike
the JPATH_*, this has a final path separator!
	 * @param   string  $readprefix   The read prefix (optional).
	 * @param   array   $context      The context options (optional).
	 *
	 * @since   1.0
	 */
	public function __construct($writeprefix = '', $readprefix =
'', $context = array())
	{
		$this->writeprefix    = $writeprefix;
		$this->readprefix     = $readprefix;
		$this->contextOptions = $context;
		$this->_buildContext();
	}

	/**
	 * Destructor
	 *
	 * @since   1.0
	 */
	public function __destruct()
	{
		// Attempt to close on destruction if there is a file handle
		if ($this->fh)
		{
			@$this->close();
		}
	}

	/**
	 * Creates a new stream object with appropriate prefix
	 *
	 * @param   boolean  $usePrefix  Prefix the connections for writing
	 * @param   string   $ua         UA User agent to use
	 * @param   boolean  $uamask     User agent masking (prefix Mozilla)
	 *
	 * @return  Stream
	 *
	 * @see     Stream
	 * @since   1.0
	 */
	public static function getStream($usePrefix = true, $ua = null, $uamask =
false)
	{
		// Setup the context; Joomla! UA and overwrite
		$context = array();

		// Set the UA for HTTP
		$context['http']['user_agent'] = $ua ?: 'Joomla!
Framework Stream';

		if ($usePrefix)
		{
			return new Stream(JPATH_ROOT . '/', JPATH_ROOT, $context);
		}

		return new Stream('', '', $context);
	}

	/**
	 * Generic File Operations
	 *
	 * Open a stream with some lazy loading smarts
	 *
	 * @param   string    $filename              Filename
	 * @param   string    $mode                  Mode string to use
	 * @param   boolean   $useIncludePath        Use the PHP include path
	 * @param   resource  $context               Context to use when opening
	 * @param   boolean   $usePrefix             Use a prefix to open the file
	 * @param   boolean   $relative              Filename is a relative path
(if false, strips JPATH_ROOT to make it relative)
	 * @param   boolean   $detectprocessingmode  Detect the processing method
for the file and use the appropriate function
	 *                                           to handle output
automatically
	 *
	 * @return  boolean
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function open($filename, $mode = 'r', $useIncludePath =
false, $context = null, $usePrefix = false, $relative = false,
		$detectprocessingmode = false
	)
	{
		$filename = $this->_getFilename($filename, $mode, $usePrefix,
$relative);

		if (!$filename)
		{
			throw new FilesystemException('Filename not set');
		}

		$this->filename = $filename;
		$this->openmode = $mode;

		$url = parse_url($filename);

		if (isset($url['scheme']))
		{
			$scheme = ucfirst($url['scheme']);

			// If we're dealing with a Joomla! stream, load it
			if (Helper::isJoomlaStream($scheme))
			{
				// Map to StringWrapper if required
				if ($scheme === 'String')
				{
					$scheme = 'StringWrapper';
				}

				require_once __DIR__ . '/Stream/' . $scheme .
'.php';
			}

			// We have a scheme! force the method to be f
			$this->processingmethod = 'f';
		}
		elseif ($detectprocessingmode)
		{
			$ext = strtolower(pathinfo($this->filename, \PATHINFO_EXTENSION));

			switch ($ext)
			{
				case 'tgz':
				case 'gz':
				case 'gzip':
					$this->processingmethod = 'gz';

					break;

				case 'tbz2':
				case 'bz2':
				case 'bzip2':
					$this->processingmethod = 'bz';

					break;

				default:
					$this->processingmethod = 'f';

					break;
			}
		}

		// Capture PHP errors
		if (PHP_VERSION_ID < 70000)
		{
			// @Todo Remove this path, when PHP5 support is dropped.
			set_error_handler(
				function () {
					return false;
				}
			);
			@trigger_error('');
			restore_error_handler();
		}
		else
		{
			/** @noinspection PhpElementIsNotAvailableInCurrentPhpVersionInspection
*/
			error_clear_last();
		}

		// Decide which context to use:
		switch ($this->processingmethod)
		{
			// Gzip doesn't support contexts or streams
			case 'gz':
				$this->fh = gzopen($filename, $mode, $useIncludePath);

				break;

			// Bzip2 is much like gzip except it doesn't use the include path
			case 'bz':
				$this->fh = bzopen($filename, $mode);

				break;

			// Fopen can handle streams
			case 'f':
			default:
				// One supplied at open; overrides everything
				if ($context)
				{
					$this->fh = @fopen($filename, $mode, $useIncludePath, $context);
				}
				elseif ($this->context)
				{
					// One provided at initialisation
					$this->fh = @fopen($filename, $mode, $useIncludePath,
$this->context);
				}
				else
				{
					// No context; all defaults
					$this->fh = @fopen($filename, $mode, $useIncludePath);
				}

				break;
		}

		if (!$this->fh)
		{
			$error = error_get_last();

			if ($error === null || $error['message'] === '')
			{
				// Error but nothing from php? Create our own
				$error = array(
					'message' => sprintf('Unknown error opening file
%s', $filename)
				);
			}

			throw new FilesystemException($error['message']);
		}

		// Return the result
		return true;
	}

	/**
	 * Attempt to close a file handle
	 *
	 * Will return false if it failed and true on success
	 * If the file is not open the system will return true, this function
destroys the file handle as well
	 *
	 * @return  boolean
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function close()
	{
		if (!$this->fh)
		{
			throw new FilesystemException('File not open');
		}

		// Capture PHP errors
		if (PHP_VERSION_ID < 70000)
		{
			// @Todo Remove this path, when PHP5 support is dropped.
			set_error_handler(
				function () {
					return false;
				}
			);
			@trigger_error('');
			restore_error_handler();
		}
		else
		{
			/** @noinspection PhpElementIsNotAvailableInCurrentPhpVersionInspection
*/
			error_clear_last();
		}

		switch ($this->processingmethod)
		{
			case 'gz':
				$res = gzclose($this->fh);

				break;

			case 'bz':
				$res = bzclose($this->fh);

				break;

			case 'f':
			default:
				$res = fclose($this->fh);

				break;
		}

		if (!$res)
		{
			$error = error_get_last();

			if ($error === null || $error['message'] === '')
			{
				// Error but nothing from php? Create our own
				$error = array(
					'message' => 'Unable to close stream'
				);
			}

			throw new FilesystemException($error['message']);
		}

		// Reset this
		$this->fh = null;

		// If we wrote, chmod the file after it's closed
		if ($this->openmode[0] == 'w')
		{
			$this->chmod();
		}

		// Return the result
		return true;
	}

	/**
	 * Work out if we're at the end of the file for a stream
	 *
	 * @return  boolean
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function eof()
	{
		if (!$this->fh)
		{
			throw new FilesystemException('File not open');
		}

		// Capture PHP errors
		if (PHP_VERSION_ID < 70000)
		{
			// @Todo Remove this path, when PHP5 support is dropped.
			set_error_handler(
				function () {
					return false;
				}
			);
			@trigger_error('');
			restore_error_handler();
		}
		else
		{
			/** @noinspection PhpElementIsNotAvailableInCurrentPhpVersionInspection
*/
			error_clear_last();
		}

		switch ($this->processingmethod)
		{
			case 'gz':
				$res = gzeof($this->fh);

				break;

			case 'bz':
			case 'f':
			default:
				$res = feof($this->fh);

				break;
		}

		$error = error_get_last();

		if ($error !== null && $error['message'] !==
'')
		{
			throw new FilesystemException($error['message']);
		}

		// Return the result
		return $res;
	}

	/**
	 * Retrieve the file size of the path
	 *
	 * @return  integer|boolean
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function filesize()
	{
		if (!$this->filename)
		{
			throw new FilesystemException('File not open');
		}

		// Capture PHP errors
		if (PHP_VERSION_ID < 70000)
		{
			// @Todo Remove this path, when PHP5 support is dropped.
			set_error_handler(
				function () {
					return false;
				}
			);
			@trigger_error('');
			restore_error_handler();
		}
		else
		{
			/** @noinspection PhpElementIsNotAvailableInCurrentPhpVersionInspection
*/
			error_clear_last();
		}

		$res = @filesize($this->filename);

		if (!$res)
		{
			$res = Helper::remotefsize($this->filename);
		}

		if (!$res)
		{
			$error = error_get_last();

			if ($error === null || $error['message'] === '')
			{
				// Error but nothing from php? Create our own
				$error = array(
					'message' => 'Failed to get file size. This may not
work for all streams.'
				);
			}

			throw new FilesystemException($error['message']);
		}

		$this->filesize = $res;

		// Return the result
		return $this->filesize;
	}

	/**
	 * Get a line from the stream source.
	 *
	 * @param   integer  $length  The number of bytes (optional) to read.
	 *
	 * @return  string
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function gets($length = 0)
	{
		if (!$this->fh)
		{
			throw new FilesystemException('File not open');
		}

		// Capture PHP errors
		if (PHP_VERSION_ID < 70000)
		{
			// @Todo Remove this path, when PHP5 support is dropped.
			set_error_handler(
				function () {
					return false;
				}
			);
			@trigger_error('');
			restore_error_handler();
		}
		else
		{
			/** @noinspection PhpElementIsNotAvailableInCurrentPhpVersionInspection
*/
			error_clear_last();
		}

		switch ($this->processingmethod)
		{
			case 'gz':
				$res = $length ? gzgets($this->fh, $length) : gzgets($this->fh);

				break;

			case 'bz':
			case 'f':
			default:
				$res = $length ? fgets($this->fh, $length) : fgets($this->fh);

				break;
		}

		if (!$res)
		{
			$error = error_get_last();

			if ($error === null || $error['message'] === '')
			{
				// Error but nothing from php? Create our own
				$error = array(
					'message' => 'Unable to read from stream'
				);
			}

			throw new FilesystemException($error['message']);
		}

		// Return the result
		return $res;
	}

	/**
	 * Read a file
	 *
	 * Handles user space streams appropriately otherwise any read will return
8192
	 *
	 * @param   integer  $length  Length of data to read
	 *
	 * @return  string
	 *
	 * @link    https://www.php.net/manual/en/function.fread.php
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function read($length = 0)
	{
		if (!$this->fh)
		{
			throw new FilesystemException('File not open');
		}

		if (!$this->filesize && !$length)
		{
			// Get the filesize
			$this->filesize();

			if (!$this->filesize)
			{
				// Set it to the biggest and then wait until eof
				$length = -1;
			}
			else
			{
				$length = $this->filesize;
			}
		}

		$retval = false;

		// Capture PHP errors
		if (PHP_VERSION_ID < 70000)
		{
			// @Todo Remove this path, when PHP5 support is dropped.
			set_error_handler(
				function () {
					return false;
				}
			);
			@trigger_error('');
			restore_error_handler();
		}
		else
		{
			/** @noinspection PhpElementIsNotAvailableInCurrentPhpVersionInspection
*/
			error_clear_last();
		}

		$remaining = $length;

		do
		{
			// Do chunked reads where relevant
			switch ($this->processingmethod)
			{
				case 'bz':
					$res = ($remaining > 0) ? bzread($this->fh, $remaining) :
bzread($this->fh, $this->chunksize);

					break;

				case 'gz':
					$res = ($remaining > 0) ? gzread($this->fh, $remaining) :
gzread($this->fh, $this->chunksize);

					break;

				case 'f':
				default:
					$res = ($remaining > 0) ? fread($this->fh, $remaining) :
fread($this->fh, $this->chunksize);

					break;
			}

			if (!$res)
			{
				$error = error_get_last();

				if ($error === null || $error['message'] === '')
				{
					// Error but nothing from php? Create our own
					$error = array(
						'message' => 'Unable to read from stream'
					);
				}

				throw new FilesystemException($error['message']);
			}

			if (!$retval)
			{
				$retval = '';
			}

			$retval .= $res;

			if (!$this->eof())
			{
				$len = \strlen($res);
				$remaining -= $len;
			}
			else
			{
				// If it's the end of the file then we've nothing left to
read; reset remaining and len
				$remaining = 0;
				$length    = \strlen($retval);
			}
		}
		while ($remaining || !$length);

		// Return the result
		return $retval;
	}

	/**
	 * Seek the file
	 *
	 * Note: the return value is different to that of fseek
	 *
	 * @param   integer  $offset  Offset to use when seeking.
	 * @param   integer  $whence  Seek mode to use.
	 *
	 * @return  boolean  True on success, false on failure
	 *
	 * @link    https://www.php.net/manual/en/function.fseek.php
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function seek($offset, $whence = \SEEK_SET)
	{
		if (!$this->fh)
		{
			throw new FilesystemException('File not open');
		}

		// Capture PHP errors
		if (PHP_VERSION_ID < 70000)
		{
			// @Todo Remove this path, when PHP5 support is dropped.
			set_error_handler(
				function () {
					return false;
				}
			);
			@trigger_error('');
			restore_error_handler();
		}
		else
		{
			/** @noinspection PhpElementIsNotAvailableInCurrentPhpVersionInspection
*/
			error_clear_last();
		}

		switch ($this->processingmethod)
		{
			case 'gz':
				$res = gzseek($this->fh, $offset, $whence);

				break;

			case 'bz':
			case 'f':
			default:
				$res = fseek($this->fh, $offset, $whence);

				break;
		}

		// Seek, interestingly, returns 0 on success or -1 on failure.
		if ($res == -1)
		{
			$error = error_get_last();

			if ($error === null || $error['message'] === '')
			{
				// Error but nothing from php? Create our own
				$error = array(
					'message' => 'Unable to seek in stream'
				);
			}

			throw new FilesystemException($error['message']);
		}

		// Return the result
		return true;
	}

	/**
	 * Returns the current position of the file read/write pointer.
	 *
	 * @return  integer
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function tell()
	{
		if (!$this->fh)
		{
			throw new FilesystemException('File not open');
		}

		// Capture PHP errors
		if (PHP_VERSION_ID < 70000)
		{
			// @Todo Remove this path, when PHP5 support is dropped.
			set_error_handler(
				function () {
					return false;
				}
			);
			@trigger_error('');
			restore_error_handler();
		}
		else
		{
			/** @noinspection PhpElementIsNotAvailableInCurrentPhpVersionInspection
*/
			error_clear_last();
		}

		switch ($this->processingmethod)
		{
			case 'gz':
				$res = gztell($this->fh);

				break;

			case 'bz':
			case 'f':
			default:
				$res = ftell($this->fh);

				break;
		}

		// May return 0 so check if it's really false
		if ($res === false)
		{
			$error = error_get_last();

			if ($error === null || $error['message'] === '')
			{
				// Error but nothing from php? Create our own
				$error = array(
					'message' => 'Unable to determine the current
position in stream'
				);
			}

			throw new FilesystemException($error['message']);
		}

		// Return the result
		return $res;
	}

	/**
	 * File write
	 *
	 * Whilst this function accepts a reference, the underlying fwrite
	 * will do a copy! This will roughly double the memory allocation for
	 * any write you do. Specifying chunked will get around this by only
	 * writing in specific chunk sizes. This defaults to 8192 which is a
	 * sane number to use most of the time (change the default with
	 * Stream::set('chunksize', newsize);)
	 * Note: This doesn't support gzip/bzip2 writing like reading does
	 *
	 * @param   string   $string  Reference to the string to write.
	 * @param   integer  $length  Length of the string to write.
	 * @param   integer  $chunk   Size of chunks to write in.
	 *
	 * @return  boolean
	 *
	 * @link    https://www.php.net/manual/en/function.fwrite.php
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function write(&$string, $length = 0, $chunk = 0)
	{
		if (!$this->fh)
		{
			throw new FilesystemException('File not open');
		}

		if ($this->openmode == 'r')
		{
			throw new \RuntimeException('File is in readonly mode');
		}

		// If the length isn't set, set it to the length of the string.
		if (!$length)
		{
			$length = \strlen($string);
		}

		// If the chunk isn't set, set it to the default.
		if (!$chunk)
		{
			$chunk = $this->chunksize;
		}

		$retval = true;

		// Capture PHP errors
		if (PHP_VERSION_ID < 70000)
		{
			// @Todo Remove this path, when PHP5 support is dropped.
			set_error_handler(
				function () {
					return false;
				}
			);
			@trigger_error('');
			restore_error_handler();
		}
		else
		{
			/** @noinspection PhpElementIsNotAvailableInCurrentPhpVersionInspection
*/
			error_clear_last();
		}

		$remaining = $length;
		$start     = 0;

		do
		{
			// If the amount remaining is greater than the chunk size, then use the
chunk
			$amount = ($remaining > $chunk) ? $chunk : $remaining;
			$res    = fwrite($this->fh, substr($string, $start), $amount);

			// Returns false on error or the number of bytes written
			if ($res === false)
			{
				$error = error_get_last();

				if ($error === null || $error['message'] === '')
				{
					// Error but nothing from php? Create our own
					$error = array(
						'message' => 'Unable to write to stream'
					);
				}

				throw new FilesystemException($error['message']);
			}

			if ($res === 0)
			{
				// Wrote nothing?
				throw new FilesystemException('Warning: No data written');
			}

			// Wrote something
			$start += $amount;
			$remaining -= $res;
		}
		while ($remaining);

		// Return the result
		return $retval;
	}

	/**
	 * Chmod wrapper
	 *
	 * @param   string  $filename  File name.
	 * @param   mixed   $mode      Mode to use.
	 *
	 * @return  boolean
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function chmod($filename = '', $mode = 0)
	{
		if (!$filename)
		{
			if (!isset($this->filename) || !$this->filename)
			{
				throw new FilesystemException('Filename not set');
			}

			$filename = $this->filename;
		}

		// If no mode is set use the default
		if (!$mode)
		{
			$mode = $this->filemode;
		}

		// Capture PHP errors
		if (PHP_VERSION_ID < 70000)
		{
			// @Todo Remove this path, when PHP5 support is dropped.
			set_error_handler(
				function () {
					return false;
				}
			);
			@trigger_error('');
			restore_error_handler();
		}
		else
		{
			/** @noinspection PhpElementIsNotAvailableInCurrentPhpVersionInspection
*/
			error_clear_last();
		}

		$sch = parse_url($filename, \PHP_URL_SCHEME);

		// Scheme specific options; ftp's chmod support is fun.
		switch ($sch)
		{
			case 'ftp':
			case 'ftps':
				$res = Helper::ftpChmod($filename, $mode);

				break;

			default:
				$res = chmod($filename, $mode);

				break;
		}

		if ($res === false)
		{
			$error = error_get_last();

			if ($error === null || $error['message'] === '')
			{
				// Error but nothing from php? Create our own
				$error = array(
					'message' => 'Unable to change mode of stream'
				);
			}

			throw new FilesystemException($error['message']);
		}

		// Return the result
		return true;
	}

	/**
	 * Get the stream metadata
	 *
	 * @return  array  header/metadata
	 *
	 * @link   
https://www.php.net/manual/en/function.stream-get-meta-data.php
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function get_meta_data()
	{
		if (!$this->fh)
		{
			throw new FilesystemException('File not open');
		}

		return stream_get_meta_data($this->fh);
	}

	/**
	 * Stream contexts
	 * Builds the context from the array
	 *
	 * @return  void
	 *
	 * @since   1.0
	 */
	public function _buildContext()
	{
		// According to the manual this always works!
		if (\count($this->contextOptions))
		{
			$this->context = @stream_context_create($this->contextOptions);
		}
		else
		{
			$this->context = null;
		}
	}

	/**
	 * Updates the context to the array
	 *
	 * Format is the same as the options for stream_context_create
	 *
	 * @param   array  $context  Options to create the context with
	 *
	 * @return  void
	 *
	 * @link    https://www.php.net/stream_context_create
	 * @since   1.0
	 */
	public function setContextOptions($context)
	{
		$this->contextOptions = $context;
		$this->_buildContext();
	}

	/**
	 * Adds a particular options to the context
	 *
	 * @param   string  $wrapper  The wrapper to use
	 * @param   string  $name     The option to set
	 * @param   string  $value    The value of the option
	 *
	 * @return  void
	 *
	 * @link    https://www.php.net/stream_context_create Stream Context
Creation
	 * @link    https://www.php.net/manual/en/context.php Context Options for
various streams
	 * @since   1.0
	 */
	public function addContextEntry($wrapper, $name, $value)
	{
		$this->contextOptions[$wrapper][$name] = $value;
		$this->_buildContext();
	}

	/**
	 * Deletes a particular setting from a context
	 *
	 * @param   string  $wrapper  The wrapper to use
	 * @param   string  $name     The option to unset
	 *
	 * @return  void
	 *
	 * @link    https://www.php.net/stream_context_create
	 * @since   1.0
	 */
	public function deleteContextEntry($wrapper, $name)
	{
		// Check whether the wrapper is set
		if (isset($this->contextOptions[$wrapper]))
		{
			// Check that entry is set for that wrapper
			if (isset($this->contextOptions[$wrapper][$name]))
			{
				// Unset the item
				unset($this->contextOptions[$wrapper][$name]);

				// Check that there are still items there
				if (!\count($this->contextOptions[$wrapper]))
				{
					// Clean up an empty wrapper context option
					unset($this->contextOptions[$wrapper]);
				}
			}
		}

		// Rebuild the context and apply it to the stream
		$this->_buildContext();
	}

	/**
	 * Applies the current context to the stream
	 *
	 * Use this to change the values of the context after you've opened a
stream
	 *
	 * @return  boolean
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function applyContextToStream()
	{
		$retval = false;

		if ($this->fh)
		{
			// Capture PHP errors
			if (PHP_VERSION_ID < 70000)
			{
				// @Todo Remove this path, when PHP5 support is dropped.
				set_error_handler(
					function () {
						return false;
					}
				);
				@trigger_error('');
				restore_error_handler();
			}
			else
			{
				/** @noinspection PhpElementIsNotAvailableInCurrentPhpVersionInspection
*/
				error_clear_last();
			}

			$retval = @stream_context_set_option($this->fh,
$this->contextOptions);

			if (!$retval)
			{
				$error = error_get_last();

				if ($error === null || $error['message'] === '')
				{
					// Error but nothing from php? Create our own
					$error = array(
						'message' => 'Unable to apply context to
stream'
					);
				}

				throw new FilesystemException($error['message']);
			}
		}

		return $retval;
	}

	/**
	 * Stream filters
	 * Append a filter to the chain
	 *
	 * @param   string   $filtername  The key name of the filter.
	 * @param   integer  $readWrite   Optional. Defaults to
STREAM_FILTER_READ.
	 * @param   array    $params      An array of params for the
stream_filter_append call.
	 *
	 * @return  resource|boolean
	 *
	 * @link   
https://www.php.net/manual/en/function.stream-filter-append.php
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function appendFilter($filtername, $readWrite =
\STREAM_FILTER_READ, $params = array())
	{
		$res = false;

		if ($this->fh)
		{
			// Capture PHP errors
			if (PHP_VERSION_ID < 70000)
			{
				// @Todo Remove this path, when PHP5 support is dropped.
				set_error_handler(
					function () {
						return false;
					}
				);
				@trigger_error('');
				restore_error_handler();
			}
			else
			{
				/** @noinspection PhpElementIsNotAvailableInCurrentPhpVersionInspection
*/
				error_clear_last();
			}

			$res = @stream_filter_append($this->fh, $filtername, $readWrite,
$params);

			if (!$res)
			{
				$error = error_get_last();

				if ($error !== null && $error['message'] !==
'')
				{
					throw new FilesystemException($error['message']);
				}
			}

			$this->filters[] = &$res;
		}

		return $res;
	}

	/**
	 * Prepend a filter to the chain
	 *
	 * @param   string   $filtername  The key name of the filter.
	 * @param   integer  $readWrite   Optional. Defaults to
STREAM_FILTER_READ.
	 * @param   array    $params      An array of params for the
stream_filter_prepend call.
	 *
	 * @return  resource|boolean
	 *
	 * @link   
https://www.php.net/manual/en/function.stream-filter-prepend.php
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function prependFilter($filtername, $readWrite =
\STREAM_FILTER_READ, $params = array())
	{
		$res = false;

		if ($this->fh)
		{
			// Capture PHP errors
			if (PHP_VERSION_ID < 70000)
			{
				// @Todo Remove this path, when PHP5 support is dropped.
				set_error_handler(
					function () {
						return false;
					}
				);
				@trigger_error('');
				restore_error_handler();
			}
			else
			{
				/** @noinspection PhpElementIsNotAvailableInCurrentPhpVersionInspection
*/
				error_clear_last();
			}

			$res = @stream_filter_prepend($this->fh, $filtername, $readWrite,
$params);

			if (!$res)
			{
				$error = error_get_last();

				if ($error !== null && $error['message'] !==
'')
				{
					throw new FilesystemException($error['message']);
				}
			}

			array_unshift($this->filters, '');
			$this->filters[0] = &$res;
		}

		return $res;
	}

	/**
	 * Remove a filter, either by resource (handed out from the append or
prepend function)
	 * or via getting the filter list)
	 *
	 * @param   resource  $resource  The resource.
	 * @param   boolean   $byindex   The index of the filter.
	 *
	 * @return  boolean   Result of operation
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function removeFilter(&$resource, $byindex = false)
	{
		// Capture PHP errors
		if (PHP_VERSION_ID < 70000)
		{
			// @Todo Remove this path, when PHP5 support is dropped.
			set_error_handler(
				function () {
					return false;
				}
			);
			@trigger_error('');
			restore_error_handler();
		}
		else
		{
			/** @noinspection PhpElementIsNotAvailableInCurrentPhpVersionInspection
*/
			error_clear_last();
		}

		if ($byindex)
		{
			$res = stream_filter_remove($this->filters[$resource]);
		}
		else
		{
			$res = stream_filter_remove($resource);
		}

		if (!$res)
		{
			$error = error_get_last();

			if ($error === null || $error['message'] === '')
			{
				// Error but nothing from php? Create our own
				$error = array(
					'message' => 'Unable to remove filter from
stream'
				);
			}

			throw new FilesystemException($error['message']);
		}

		return $res;
	}

	/**
	 * Copy a file from src to dest
	 *
	 * @param   string    $src        The file path to copy from.
	 * @param   string    $dest       The file path to copy to.
	 * @param   resource  $context    A valid context resource (optional)
created with stream_context_create.
	 * @param   boolean   $usePrefix  Controls the use of a prefix (optional).
	 * @param   boolean   $relative   Determines if the filename given is
relative. Relative paths do not have JPATH_ROOT stripped.
	 *
	 * @return  boolean
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function copy($src, $dest, $context = null, $usePrefix = true,
$relative = false)
	{
		// Capture PHP errors
		if (PHP_VERSION_ID < 70000)
		{
			// @Todo Remove this path, when PHP5 support is dropped.
			set_error_handler(
				function () {
					return false;
				}
			);
			@trigger_error('');
			restore_error_handler();
		}
		else
		{
			/** @noinspection PhpElementIsNotAvailableInCurrentPhpVersionInspection
*/
			error_clear_last();
		}

		$chmodDest = $this->_getFilename($dest, 'w', $usePrefix,
$relative);

		// Since we're going to open the file directly we need to get the
filename.
		// We need to use the same prefix so force everything to write.
		$src  = $this->_getFilename($src, 'w', $usePrefix,
$relative);
		$dest = $this->_getFilename($dest, 'w', $usePrefix,
$relative);

		// One supplied at copy; overrides everything
		if ($context)
		{
			// Use the provided context
			$res = @copy($src, $dest, $context);
		}
		elseif ($this->context)
		{
			// One provided at initialisation
			$res = @copy($src, $dest, $this->context);
		}
		else
		{
			// No context; all defaults
			$res = @copy($src, $dest);
		}

		if (!$res)
		{
			$error = error_get_last();

			if ($error !== null && $error['message'] !==
'')
			{
				throw new FilesystemException($error['message']);
			}
		}

		$this->chmod($chmodDest);

		return $res;
	}

	/**
	 * Moves a file
	 *
	 * @param   string    $src        The file path to move from.
	 * @param   string    $dest       The file path to move to.
	 * @param   resource  $context    A valid context resource (optional)
created with stream_context_create.
	 * @param   boolean   $usePrefix  Controls the use of a prefix (optional).
	 * @param   boolean   $relative   Determines if the filename given is
relative. Relative paths do not have JPATH_ROOT stripped.
	 *
	 * @return  boolean
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function move($src, $dest, $context = null, $usePrefix = true,
$relative = false)
	{
		// Capture PHP errors
		if (PHP_VERSION_ID < 70000)
		{
			// @Todo Remove this path, when PHP5 support is dropped.
			set_error_handler(
				function () {
					return false;
				}
			);
			@trigger_error('');
			restore_error_handler();
		}
		else
		{
			/** @noinspection PhpElementIsNotAvailableInCurrentPhpVersionInspection
*/
			error_clear_last();
		}

		$src  = $this->_getFilename($src, 'w', $usePrefix,
$relative);
		$dest = $this->_getFilename($dest, 'w', $usePrefix,
$relative);

		if ($context)
		{
			// Use the provided context
			$res = @rename($src, $dest, $context);
		}
		elseif ($this->context)
		{
			// Use the object's context
			$res = @rename($src, $dest, $this->context);
		}
		else
		{
			// Don't use any context
			$res = @rename($src, $dest);
		}

		if (!$res)
		{
			$error = error_get_last();

			if ($error === null || $error['message'] === '')
			{
				// Error but nothing from php? Create our own
				$error = array(
					'message' => 'Unable to move stream'
				);
			}

			throw new FilesystemException($error['message']);
		}

		$this->chmod($dest);

		return $res;
	}

	/**
	 * Delete a file
	 *
	 * @param   string    $filename   The file path to delete.
	 * @param   resource  $context    A valid context resource (optional)
created with stream_context_create.
	 * @param   boolean   $usePrefix  Controls the use of a prefix (optional).
	 * @param   boolean   $relative   Determines if the filename given is
relative. Relative paths do not have JPATH_ROOT stripped.
	 *
	 * @return  boolean
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function delete($filename, $context = null, $usePrefix = true,
$relative = false)
	{
		// Capture PHP errors
		if (PHP_VERSION_ID < 70000)
		{
			// @Todo Remove this path, when PHP5 support is dropped.
			set_error_handler(
				function () {
					return false;
				}
			);
			@trigger_error('');
			restore_error_handler();
		}
		else
		{
			/** @noinspection PhpElementIsNotAvailableInCurrentPhpVersionInspection
*/
			error_clear_last();
		}

		$filename = $this->_getFilename($filename, 'w', $usePrefix,
$relative);

		if ($context)
		{
			// Use the provided context
			$res = @unlink($filename, $context);
		}
		elseif ($this->context)
		{
			// Use the object's context
			$res = @unlink($filename, $this->context);
		}
		else
		{
			// Don't use any context
			$res = @unlink($filename);
		}

		if (!$res)
		{
			$error = error_get_last();

			if ($error === null || $error['message'] === '')
			{
				// Error but nothing from php? Create our own
				$error = array(
					'message' => 'Unable to delete stream'
				);
			}

			throw new FilesystemException($error['message']);
		}

		return $res;
	}

	/**
	 * Upload a file
	 *
	 * @param   string    $src        The file path to copy from (usually a
temp folder).
	 * @param   string    $dest       The file path to copy to.
	 * @param   resource  $context    A valid context resource (optional)
created with stream_context_create.
	 * @param   boolean   $usePrefix  Controls the use of a prefix (optional).
	 * @param   boolean   $relative   Determines if the filename given is
relative. Relative paths do not have JPATH_ROOT stripped.
	 *
	 * @return  boolean
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public function upload($src, $dest, $context = null, $usePrefix = true,
$relative = false)
	{
		if (is_uploaded_file($src))
		{
			// Make sure it's an uploaded file
			return $this->copy($src, $dest, $context, $usePrefix, $relative);
		}

		throw new FilesystemException('Not an uploaded file.');
	}

	/**
	 * Writes a chunk of data to a file.
	 *
	 * @param   string   $filename      The file name.
	 * @param   string   $buffer        The data to write to the file.
	 * @param   boolean  $appendToFile  Append to the file and not overwrite
it.
	 *
	 * @return  boolean
	 *
	 * @since   1.0
	 */
	public function writeFile($filename, &$buffer, $appendToFile = false)
	{
		$fileMode = 'w';

		// Switch the filemode when we want to append to the file
		if ($appendToFile)
		{
			$fileMode = 'a';
		}

		if ($this->open($filename, $fileMode))
		{
			$result = $this->write($buffer);
			$this->chmod();
			$this->close();

			return $result;
		}

		return false;
	}

	/**
	 * Determine the appropriate 'filename' of a file
	 *
	 * @param   string   $filename   Original filename of the file
	 * @param   string   $mode       Mode string to retrieve the filename
	 * @param   boolean  $usePrefix  Controls the use of a prefix
	 * @param   boolean  $relative   Determines if the filename given is
relative. Relative paths do not have JPATH_ROOT stripped.
	 *
	 * @return  string
	 *
	 * @since   1.0
	 */
	public function _getFilename($filename, $mode, $usePrefix, $relative)
	{
		if ($usePrefix)
		{
			// Get rid of binary or t, should be at the end of the string
			$tmode = trim($mode, 'btf123456789');

			$stream   = explode('://', $filename, 2);
			$scheme   = '';
			$filename = $stream[0];

			if (\count($stream) >= 2)
			{
				$scheme   = $stream[0] . '://';
				$filename = $stream[1];
			}

			// Check if it's a write mode then add the appropriate prefix
			if (\in_array($tmode, Helper::getWriteModes()))
			{
				$prefixToUse = $this->writeprefix;
			}
			else
			{
				$prefixToUse = $this->readprefix;
			}

			// Get rid of JPATH_ROOT (legacy compat)
			if (!$relative && $prefixToUse)
			{
				$pos = strpos($filename, JPATH_ROOT);

				if ($pos !== false)
				{
					$filename = substr_replace($filename, '', $pos,
\strlen(JPATH_ROOT));
				}
			}

			$filename = ($prefixToUse ? $prefixToUse : '') . $filename;
		}

		return $filename;
	}

	/**
	 * Return the internal file handle
	 *
	 * @return  File handler
	 *
	 * @since   1.0
	 */
	public function getFileHandle()
	{
		return $this->fh;
	}

	/**
	 * Modifies a property of the object, creating it if it does not already
exist.
	 *
	 * @param   string  $property  The name of the property.
	 * @param   mixed   $value     The value of the property to set.
	 *
	 * @return  mixed  Previous value of the property.
	 *
	 * @since   1.0
	 */
	public function set($property, $value = null)
	{
		$previous        = isset($this->$property) ? $this->$property :
null;
		$this->$property = $value;

		return $previous;
	}

	/**
	 * Returns a property of the object or the default value if the property
is not set.
	 *
	 * @param   string  $property  The name of the property.
	 * @param   mixed   $default   The default value.
	 *
	 * @return  mixed    The value of the property.
	 *
	 * @since   1.0
	 */
	public function get($property, $default = null)
	{
		if (isset($this->$property))
		{
			return $this->$property;
		}

		return $default;
	}
}
src/Support/StringController.php000064400000002622151170271470013041
0ustar00<?php
/**
 * Part of the Joomla Framework Filesystem Package
 *
 * @copyright  Copyright (C) 2005 - 2020 Open Source Matters, Inc. All
rights reserved.
 * @license    GNU General Public License version 2 or later; see LICENSE
 */

namespace Joomla\Filesystem\Support;

/**
 * String Controller
 *
 * @since  1.0
 */
class StringController
{
	/**
	 * Internal string references
	 *
	 * @var     array
	 * @ssince  1.4.0
	 */
	private static $strings = array();

	/**
	 * Defines a variable as an array
	 *
	 * @return  array
	 *
	 * @since   1.0
	 * @deprecated  2.0  Use `getArray` instead.
	 */
	public static function _getArray()
	{
		return self::getArray();
	}

	/**
	 * Defines a variable as an array
	 *
	 * @return  array
	 *
	 * @since   1.4.0
	 */
	public static function getArray()
	{
		return self::$strings;
	}

	/**
	 * Create a reference
	 *
	 * @param   string  $reference  The key
	 * @param   string  $string     The value
	 *
	 * @return  void
	 *
	 * @since   1.0
	 */
	public static function createRef($reference, &$string)
	{
		self::$strings[$reference] = & $string;
	}

	/**
	 * Get reference
	 *
	 * @param   string  $reference  The key for the reference.
	 *
	 * @return  mixed  False if not set, reference if it exists
	 *
	 * @since   1.0
	 */
	public static function getRef($reference)
	{
		if (isset(self::$strings[$reference]))
		{
			return self::$strings[$reference];
		}

		return false;
	}
}