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GNU 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
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anything that is normally distributed (in either source or binary
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operating system on which the executable runs, unless that component
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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.
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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
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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.

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<?php
/**
* Part of the Joomla Framework Archive Package
*
* @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\Archive;
use Joomla\Archive\Exception\UnknownArchiveException;
use Joomla\Archive\Exception\UnsupportedArchiveException;
use Joomla\Filesystem\File;
use Joomla\Filesystem\Folder;
/**
* An Archive handling class
*
* @since 1.0
*/
class Archive
{
/**
* The array of instantiated archive adapters.
*
* @var ExtractableInterface[]
* @since 1.0
*/
protected $adapters = [];
/**
* Holds the options array.
*
* @var array|\ArrayAccess
* @since 1.0
*/
public $options = [];
/**
* Create a new Archive object.
*
* @param array|\ArrayAccess $options An array of options
*
* @since 1.0
* @throws \InvalidArgumentException
*/
public function __construct($options = [])
{
if (!\is_array($options) && !($options instanceof \ArrayAccess)) {
throw new \InvalidArgumentException(
'The options param must be an array or implement the ArrayAccess interface.'
);
}
// Make sure we have a tmp directory.
isset($options['tmp_path']) || $options['tmp_path'] = realpath(sys_get_temp_dir());
$this->options = $options;
}
/**
* Extract an archive file to a directory.
*
* @param string $archivename The name of the archive file
* @param string $extractdir Directory to unpack into
*
* @return boolean True for success
*
* @since 1.0
* @throws UnknownArchiveException if the archive type is not supported
*/
public function extract($archivename, $extractdir)
{
$ext = pathinfo($archivename, \PATHINFO_EXTENSION);
$path = pathinfo($archivename, \PATHINFO_DIRNAME);
$filename = pathinfo($archivename, \PATHINFO_FILENAME);
switch (strtolower($ext)) {
case 'zip':
$result = $this->getAdapter('zip')->extract($archivename, $extractdir);
break;
case 'tar':
$result = $this->getAdapter('tar')->extract($archivename, $extractdir);
break;
case 'tgz':
case 'gz':
case 'gzip':
// This may just be an individual file (e.g. sql script)
$tmpfname = $this->options['tmp_path'] . '/' . uniqid('gzip');
try {
$this->getAdapter('gzip')->extract($archivename, $tmpfname);
} catch (\RuntimeException $exception) {
@unlink($tmpfname);
return false;
}
if ($ext === 'tgz' || stripos($filename, '.tar') !== false) {
$result = $this->getAdapter('tar')->extract($tmpfname, $extractdir);
} else {
Folder::create($extractdir);
$result = File::copy($tmpfname, $extractdir . '/' . $filename, null, false);
}
@unlink($tmpfname);
break;
case 'tbz2':
case 'bz2':
case 'bzip2':
// This may just be an individual file (e.g. sql script)
$tmpfname = $this->options['tmp_path'] . '/' . uniqid('bzip2');
try {
$this->getAdapter('bzip2')->extract($archivename, $tmpfname);
} catch (\RuntimeException $exception) {
@unlink($tmpfname);
return false;
}
if ($ext === 'tbz2' || stripos($filename, '.tar') !== false) {
$result = $this->getAdapter('tar')->extract($tmpfname, $extractdir);
} else {
Folder::create($extractdir);
$result = File::copy($tmpfname, $extractdir . '/' . $filename, null, false);
}
@unlink($tmpfname);
break;
default:
throw new UnknownArchiveException(sprintf('Unsupported archive type: %s', $ext));
}
return $result;
}
/**
* Method to override the provided adapter with your own implementation.
*
* @param string $type Name of the adapter to set.
* @param string $class FQCN of your class which implements ExtractableInterface.
* @param boolean $override True to force override the adapter type.
*
* @return $this
*
* @since 1.0
* @throws UnsupportedArchiveException if the adapter type is not supported
*/
public function setAdapter($type, $class, $override = true)
{
if ($override || !isset($this->adapters[$type])) {
if (!\is_object($class) && !class_exists($class)) {
throw new UnsupportedArchiveException($type, sprintf('Archive adapter "%s" (class "%s") not found.', $type, $class));
}
if (!$class::isSupported()) {
throw new UnsupportedArchiveException($type, sprintf('Archive adapter "%s" (class "%s") not supported.', $type, $class));
}
$object = new $class($this->options);
if (!($object instanceof ExtractableInterface)) {
throw new UnsupportedArchiveException(
$type,
sprintf(
'The provided adapter "%s" (class "%s") must implement %s',
$type,
$class,
ExtractableInterface::class
)
);
}
$this->adapters[$type] = $object;
}
return $this;
}
/**
* Get a file compression adapter.
*
* @param string $type The type of adapter (bzip2|gzip|tar|zip).
*
* @return ExtractableInterface Adapter for the requested type
*
* @since 1.0
*/
public function getAdapter($type)
{
$type = strtolower($type);
if (!isset($this->adapters[$type])) {
// Try to load the adapter object
$this->setAdapter($type, __NAMESPACE__ . '\\' . ucfirst($type));
}
return $this->adapters[$type];
}
}

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<?php
/**
* Part of the Joomla Framework Archive Package
*
* @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\Archive;
use Joomla\Filesystem\File;
use Joomla\Filesystem\Stream;
/**
* Bzip2 format adapter for the Archive package
*
* @since 1.0
*/
class Bzip2 implements ExtractableInterface
{
/**
* Bzip2 file data buffer
*
* @var string
* @since 1.0
*/
private $data;
/**
* Holds the options array.
*
* @var array|\ArrayAccess
* @since 1.0
*/
protected $options = [];
/**
* Create a new Archive object.
*
* @param array|\ArrayAccess $options An array of options
*
* @since 1.0
* @throws \InvalidArgumentException
*/
public function __construct($options = [])
{
if (!\is_array($options) && !($options instanceof \ArrayAccess)) {
throw new \InvalidArgumentException(
'The options param must be an array or implement the ArrayAccess interface.'
);
}
$this->options = $options;
}
/**
* Extract a Bzip2 compressed file to a given path
*
* @param string $archive Path to Bzip2 archive to extract
* @param string $destination Path to extract archive to
*
* @return boolean True if successful
*
* @since 1.0
* @throws \RuntimeException
*/
public function extract($archive, $destination)
{
$this->data = null;
if (!isset($this->options['use_streams']) || $this->options['use_streams'] == false) {
// Old style: read the whole file and then parse it
$this->data = file_get_contents($archive);
if (!$this->data) {
throw new \RuntimeException('Unable to read archive');
}
$buffer = bzdecompress($this->data);
unset($this->data);
if (empty($buffer)) {
throw new \RuntimeException('Unable to decompress data');
}
if (!File::write($destination, $buffer)) {
throw new \RuntimeException('Unable to write archive to file ' . $destination);
}
} else {
// New style! streams!
$input = Stream::getStream();
// Use bzip
$input->set('processingmethod', 'bz');
if (!$input->open($archive)) {
throw new \RuntimeException('Unable to read archive');
}
$output = Stream::getStream();
if (!$output->open($destination, 'w')) {
$input->close();
throw new \RuntimeException('Unable to open file "' . $destination . '" for writing');
}
do {
$this->data = $input->read($input->get('chunksize', 8196));
if ($this->data) {
if (!$output->write($this->data)) {
$input->close();
throw new \RuntimeException('Unable to write archive to file ' . $destination);
}
}
} while ($this->data);
$output->close();
$input->close();
}
return true;
}
/**
* Tests whether this adapter can unpack files on this computer.
*
* @return boolean True if supported
*
* @since 1.0
*/
public static function isSupported()
{
return \extension_loaded('bz2');
}
}

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<?php
/**
* Part of the Joomla Framework Archive Package
*
* @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\Archive\Exception;
/**
* Exception class defining an unknown archive type
*
* @since 2.0.0
*/
class UnknownArchiveException extends \InvalidArgumentException
{
}

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<?php
/**
* Part of the Joomla Framework Archive Package
*
* @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\Archive\Exception;
/**
* Exception class defining an unsupported archive adapter
*
* @since 2.0.0
*/
class UnsupportedArchiveException extends \InvalidArgumentException
{
/**
* The unsupported archive adapter name
*
* @var string
* @since 2.0.0-beta2
*/
protected $adapterType = '';
/**
* Constructor
*
* @param string $adapterType The unsupported adapter type.
* @param string $message The Exception message to throw.
* @param int $code The Exception code.
* @param ?\Throwable $previous The previous throwable used for the exception chaining.
*
* @since 2.0.0-beta2
*/
public function __construct(string $adapterType, string $message = '', int $code = 0, ?\Throwable $previous = null)
{
$this->adapterType = $adapterType;
parent::__construct($message, $code, $previous);
}
/**
* Gets the name of the adapter type that was unsupported
*
* @return string
*
* @since 2.0.0-beta2
*/
public function getUnsupportedAdapterType(): string
{
return $this->adapterType;
}
}

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<?php
/**
* Part of the Joomla Framework Archive Package
*
* @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\Archive;
/**
* Archive class interface
*
* @since 1.0
*/
interface ExtractableInterface
{
/**
* Extract a compressed file to a given path
*
* @param string $archive Path to archive to extract
* @param string $destination Path to extract archive to
*
* @return boolean True if successful
*
* @since 1.0
* @throws \RuntimeException
*/
public function extract($archive, $destination);
/**
* Tests whether this adapter can unpack files on this computer.
*
* @return boolean True if supported
*
* @since 1.0
*/
public static function isSupported();
}

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<?php
/**
* Part of the Joomla Framework Archive Package
*
* @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\Archive;
use Joomla\Filesystem\File;
use Joomla\Filesystem\Stream;
/**
* Gzip format adapter for the Archive package
*
* This class is inspired from and draws heavily in code and concept from the Compress package of
* The Horde Project <http://www.horde.org>
*
* @contributor Michael Slusarz <slusarz@horde.org>
* @contributor Michael Cochrane <mike@graftonhall.co.nz>
*
* @since 1.0
*/
class Gzip implements ExtractableInterface
{
/**
* Gzip file flags.
*
* @var array
* @since 1.0
*/
private const FLAGS = ['FTEXT' => 0x01, 'FHCRC' => 0x02, 'FEXTRA' => 0x04, 'FNAME' => 0x08, 'FCOMMENT' => 0x10];
/**
* Gzip file data buffer
*
* @var string
* @since 1.0
*/
private $data;
/**
* Holds the options array.
*
* @var array|\ArrayAccess
* @since 1.0
*/
protected $options = [];
/**
* Create a new Archive object.
*
* @param array|\ArrayAccess $options An array of options
*
* @since 1.0
* @throws \InvalidArgumentException
*/
public function __construct($options = [])
{
if (!\is_array($options) && !($options instanceof \ArrayAccess)) {
throw new \InvalidArgumentException(
'The options param must be an array or implement the ArrayAccess interface.'
);
}
$this->options = $options;
}
/**
* Extract a Gzip compressed file to a given path
*
* @param string $archive Path to ZIP archive to extract
* @param string $destination Path to extract archive to
*
* @return boolean True if successful
*
* @since 1.0
* @throws \RuntimeException
*/
public function extract($archive, $destination)
{
$this->data = null;
if (!isset($this->options['use_streams']) || $this->options['use_streams'] == false) {
$this->data = file_get_contents($archive);
if (!$this->data) {
throw new \RuntimeException('Unable to read archive');
}
$position = $this->getFilePosition();
$buffer = gzinflate(substr($this->data, $position, \strlen($this->data) - $position));
if (empty($buffer)) {
throw new \RuntimeException('Unable to decompress data');
}
if (!File::write($destination, $buffer)) {
throw new \RuntimeException('Unable to write archive to file ' . $destination);
}
} else {
// New style! streams!
$input = Stream::getStream();
// Use gz
$input->set('processingmethod', 'gz');
if (!$input->open($archive)) {
throw new \RuntimeException('Unable to read archive');
}
$output = Stream::getStream();
if (!$output->open($destination, 'w')) {
$input->close();
throw new \RuntimeException('Unable to open file "' . $destination . '" for writing');
}
do {
$this->data = $input->read($input->get('chunksize', 8196));
if ($this->data) {
if (!$output->write($this->data)) {
$input->close();
throw new \RuntimeException('Unable to write archive to file ' . $destination);
}
}
} while ($this->data);
$output->close();
$input->close();
}
return true;
}
/**
* Tests whether this adapter can unpack files on this computer.
*
* @return boolean True if supported
*
* @since 1.0
*/
public static function isSupported()
{
return \extension_loaded('zlib');
}
/**
* Get file data offset for archive
*
* @return integer Data position marker for archive
*
* @since 1.0
* @throws \RuntimeException
*/
public function getFilePosition()
{
// Gzipped file... unpack it first
$position = 0;
$info = @ unpack('CCM/CFLG/VTime/CXFL/COS', substr($this->data, $position + 2));
if (!$info) {
throw new \RuntimeException('Unable to decompress data.');
}
$position += 10;
if ($info['FLG'] & self::FLAGS['FEXTRA']) {
$XLEN = unpack('vLength', substr($this->data, $position + 0, 2));
$XLEN = $XLEN['Length'];
$position += $XLEN + 2;
}
if ($info['FLG'] & self::FLAGS['FNAME']) {
$filenamePos = strpos($this->data, "\x0", $position);
$position = $filenamePos + 1;
}
if ($info['FLG'] & self::FLAGS['FCOMMENT']) {
$commentPos = strpos($this->data, "\x0", $position);
$position = $commentPos + 1;
}
if ($info['FLG'] & self::FLAGS['FHCRC']) {
$hcrc = unpack('vCRC', substr($this->data, $position + 0, 2));
$hcrc = $hcrc['CRC'];
$position += 2;
}
return $position;
}
}

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libraries/vendor/joomla/archive/src/Tar.php vendored Normal file
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<?php
/**
* Part of the Joomla Framework Archive Package
*
* @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\Archive;
use Joomla\Filesystem\File;
use Joomla\Filesystem\Folder;
use Joomla\Filesystem\Path;
/**
* Tar format adapter for the Archive package
*
* This class is inspired from and draws heavily in code and concept from the Compress package of
* The Horde Project <http://www.horde.org>
*
* @contributor Michael Slusarz <slusarz@horde.org>
* @contributor Michael Cochrane <mike@graftonhall.co.nz>
*
* @since 1.0
*/
class Tar implements ExtractableInterface
{
/**
* Tar file types.
*
* @var array
* @since 1.0
*/
private const TYPES = [
0x0 => 'Unix file',
0x30 => 'File',
0x31 => 'Link',
0x32 => 'Symbolic link',
0x33 => 'Character special file',
0x34 => 'Block special file',
0x35 => 'Directory',
0x36 => 'FIFO special file',
0x37 => 'Contiguous file',
];
/**
* Tar file data buffer
*
* @var string
* @since 1.0
*/
private $data;
/**
* Tar file metadata array
*
* @var array
* @since 1.0
*/
private $metadata;
/**
* Holds the options array.
*
* @var array|\ArrayAccess
* @since 1.0
*/
protected $options = [];
/**
* Create a new Archive object.
*
* @param array|\ArrayAccess $options An array of options or an object that implements \ArrayAccess
*
* @since 1.0
* @throws \InvalidArgumentException
*/
public function __construct($options = [])
{
if (!\is_array($options) && !($options instanceof \ArrayAccess)) {
throw new \InvalidArgumentException(
'The options param must be an array or implement the ArrayAccess interface.'
);
}
$this->options = $options;
}
/**
* Extract a ZIP compressed file to a given path
*
* @param string $archive Path to ZIP archive to extract
* @param string $destination Path to extract archive into
*
* @return boolean True if successful
*
* @since 1.0
* @throws \RuntimeException
*/
public function extract($archive, $destination)
{
$this->metadata = [];
$this->data = file_get_contents($archive);
if (!$this->data) {
throw new \RuntimeException('Unable to read archive');
}
$this->getTarInfo($this->data);
for ($i = 0, $n = \count($this->metadata); $i < $n; $i++) {
$type = strtolower($this->metadata[$i]['type']);
if ($type == 'file' || $type == 'unix file') {
$buffer = $this->metadata[$i]['data'];
$path = Path::clean($destination . '/' . $this->metadata[$i]['name']);
if (!$this->isBelow($destination, $destination . '/' . $this->metadata[$i]['name'])) {
throw new \OutOfBoundsException('Unable to write outside of destination path', 100);
}
// Make sure the destination folder exists
if (!Folder::create(\dirname($path))) {
throw new \RuntimeException('Unable to create destination folder ' . \dirname($path));
}
if (!File::write($path, $buffer)) {
throw new \RuntimeException('Unable to write entry to file ' . $path);
}
}
}
return true;
}
/**
* Tests whether this adapter can unpack files on this computer.
*
* @return boolean True if supported
*
* @since 1.0
*/
public static function isSupported()
{
return true;
}
/**
* Get the list of files/data from a Tar archive buffer and builds a metadata array.
*
* Array structure:
* <pre>
* KEY: Position in the array
* VALUES: 'attr' -- File attributes
* 'data' -- Raw file contents
* 'date' -- File modification time
* 'name' -- Filename
* 'size' -- Original file size
* 'type' -- File type
* </pre>
*
* @param string $data The Tar archive buffer.
*
* @return void
*
* @since 1.0
* @throws \RuntimeException
*/
protected function getTarInfo(&$data)
{
$position = 0;
$returnArray = [];
while ($position < \strlen($data)) {
$info = @unpack(
'Z100filename/Z8mode/Z8uid/Z8gid/Z12size/Z12mtime/Z8checksum/Ctypeflag/Z100link/Z6magic/Z2version/Z32uname/Z32gname/Z8devmajor/Z8devminor',
substr($data, $position)
);
/*
* This variable has been set in the previous loop, meaning that the filename was present in the previous block
* to allow more than 100 characters - see below
*/
if (isset($longlinkfilename)) {
$info['filename'] = $longlinkfilename;
unset($longlinkfilename);
}
if (!$info) {
throw new \RuntimeException('Unable to decompress data');
}
$position += 512;
$contents = substr($data, $position, octdec($info['size']));
$position += ceil(octdec($info['size']) / 512) * 512;
if ($info['filename']) {
$file = [
'attr' => null,
'data' => null,
'date' => octdec($info['mtime']),
'name' => trim($info['filename']),
'size' => octdec($info['size']),
'type' => self::TYPES[$info['typeflag']] ?? null,
];
if (($info['typeflag'] == 0) || ($info['typeflag'] == 0x30) || ($info['typeflag'] == 0x35)) {
// File or folder.
$file['data'] = $contents;
$mode = hexdec(substr($info['mode'], 4, 3));
$file['attr'] = (($info['typeflag'] == 0x35) ? 'd' : '-')
. (($mode & 0x400) ? 'r' : '-')
. (($mode & 0x200) ? 'w' : '-')
. (($mode & 0x100) ? 'x' : '-')
. (($mode & 0x040) ? 'r' : '-')
. (($mode & 0x020) ? 'w' : '-')
. (($mode & 0x010) ? 'x' : '-')
. (($mode & 0x004) ? 'r' : '-')
. (($mode & 0x002) ? 'w' : '-')
. (($mode & 0x001) ? 'x' : '-');
} elseif (\chr($info['typeflag']) == 'L' && $info['filename'] == '././@LongLink') {
// GNU tar ././@LongLink support - the filename is actually in the contents, set a variable here so we can test in the next loop
$longlinkfilename = $contents;
// And the file contents are in the next block so we'll need to skip this
continue;
}
$returnArray[] = $file;
}
}
$this->metadata = $returnArray;
}
/**
* Check if a path is below a given destination path
*
* @param string $destination The destination path
* @param string $path The path to be checked
*
* @return boolean
*
* @since 2.0.1
*/
private function isBelow($destination, $path): bool
{
$absoluteRoot = Path::clean(Path::resolve($destination));
$absolutePath = Path::clean(Path::resolve($path));
return strpos($absolutePath, $absoluteRoot) === 0;
}
}

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<?php
/**
* Part of the Joomla Framework Archive Package
*
* @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\Archive;
use Joomla\Filesystem\File;
use Joomla\Filesystem\Folder;
use Joomla\Filesystem\Path;
/**
* ZIP format adapter for the Archive package
*
* The ZIP compression code is partially based on code from:
* Eric Mueller <eric@themepark.com>
* http://www.zend.com/codex.php?id=535&single=1
*
* Deins125 <webmaster@atlant.ru>
* http://www.zend.com/codex.php?id=470&single=1
*
* The ZIP compression date code is partially based on code from
* Peter Listiak <mlady@users.sourceforge.net>
*
* This class is inspired from and draws heavily in code and concept from the Compress package of
* The Horde Project <http://www.horde.org>
*
* @contributor Chuck Hagenbuch <chuck@horde.org>
* @contributor Michael Slusarz <slusarz@horde.org>
* @contributor Michael Cochrane <mike@graftonhall.co.nz>
*
* @since 1.0
*/
class Zip implements ExtractableInterface
{
/**
* ZIP compression methods.
*
* @var array
* @since 1.0
*/
private const METHODS = [
0x0 => 'None',
0x1 => 'Shrunk',
0x2 => 'Super Fast',
0x3 => 'Fast',
0x4 => 'Normal',
0x5 => 'Maximum',
0x6 => 'Imploded',
0x8 => 'Deflated',
];
/**
* Beginning of central directory record.
*
* @var string
* @since 1.0
*/
private const CTRL_DIR_HEADER = "\x50\x4b\x01\x02";
/**
* End of central directory record.
*
* @var string
* @since 1.0
*/
private const CTRL_DIR_END = "\x50\x4b\x05\x06\x00\x00\x00\x00";
/**
* Beginning of file contents.
*
* @var string
* @since 1.0
*/
private const FILE_HEADER = "\x50\x4b\x03\x04";
/**
* ZIP file data buffer
*
* @var string
* @since 1.0
*/
private $data;
/**
* ZIP file metadata array
*
* @var array
* @since 1.0
*/
private $metadata;
/**
* Holds the options array.
*
* @var array|\ArrayAccess
* @since 1.0
*/
protected $options = [];
/**
* Create a new Archive object.
*
* @param array|\ArrayAccess $options An array of options or an object that implements \ArrayAccess
*
* @since 1.0
* @throws \InvalidArgumentException
*/
public function __construct($options = [])
{
if (!\is_array($options) && !($options instanceof \ArrayAccess)) {
throw new \InvalidArgumentException(
'The options param must be an array or implement the ArrayAccess interface.'
);
}
$this->options = $options;
}
/**
* Create a ZIP compressed file from an array of file data.
*
* @param string $archive Path to save archive.
* @param array $files Array of files to add to archive.
*
* @return boolean True if successful.
*
* @since 1.0
* @todo Finish Implementation
*/
public function create($archive, $files)
{
$contents = [];
$ctrldir = [];
foreach ($files as $file) {
$this->addToZipFile($file, $contents, $ctrldir);
}
return $this->createZipFile($contents, $ctrldir, $archive);
}
/**
* Extract a ZIP compressed file to a given path
*
* @param string $archive Path to ZIP archive to extract
* @param string $destination Path to extract archive into
*
* @return boolean True if successful
*
* @since 1.0
* @throws \RuntimeException
*/
public function extract($archive, $destination)
{
if (!is_file($archive)) {
throw new \RuntimeException('Archive does not exist at ' . $archive);
}
if (static::hasNativeSupport()) {
return $this->extractNative($archive, $destination);
}
return $this->extractCustom($archive, $destination);
}
/**
* Tests whether this adapter can unpack files on this computer.
*
* @return boolean True if supported
*
* @since 1.0
*/
public static function isSupported()
{
return self::hasNativeSupport() || \extension_loaded('zlib');
}
/**
* Method to determine if the server has native zip support for faster handling
*
* @return boolean True if php has native ZIP support
*
* @since 1.0
*/
public static function hasNativeSupport()
{
return \extension_loaded('zip');
}
/**
* Checks to see if the data is a valid ZIP file.
*
* @param string $data ZIP archive data buffer.
*
* @return boolean True if valid, false if invalid.
*
* @since 1.0
*/
public function checkZipData($data)
{
return strpos($data, self::FILE_HEADER) !== false;
}
/**
* Extract a ZIP compressed file to a given path using a php based algorithm that only requires zlib support
*
* @param string $archive Path to ZIP archive to extract.
* @param string $destination Path to extract archive into.
*
* @return boolean True if successful
*
* @since 1.0
* @throws \RuntimeException
*/
protected function extractCustom($archive, $destination)
{
$this->metadata = [];
$this->data = file_get_contents($archive);
if (!$this->data) {
throw new \RuntimeException('Unable to read archive');
}
if (!$this->readZipInfo($this->data)) {
throw new \RuntimeException('Get ZIP Information failed');
}
foreach ($this->metadata as $i => $metadata) {
$lastPathCharacter = substr($metadata['name'], -1, 1);
if ($lastPathCharacter !== '/' && $lastPathCharacter !== '\\') {
$buffer = $this->getFileData($i);
$path = Path::clean($destination . '/' . $metadata['name']);
if (!$this->isBelow($destination, $destination . '/' . $metadata['name'])) {
throw new \OutOfBoundsException('Unable to write outside of destination path', 100);
}
// Make sure the destination folder exists
if (!Folder::create(\dirname($path))) {
throw new \RuntimeException('Unable to create destination folder');
}
if (!File::write($path, $buffer)) {
throw new \RuntimeException('Unable to write file');
}
}
}
return true;
}
/**
* Extract a ZIP compressed file to a given path using native php api calls for speed
*
* @param string $archive Path to ZIP archive to extract
* @param string $destination Path to extract archive into
*
* @return boolean True on success
*
* @throws \RuntimeException
* @since 1.0
*/
protected function extractNative($archive, $destination)
{
$zip = new \ZipArchive();
if ($zip->open($archive) !== true) {
throw new \RuntimeException('Unable to open archive');
}
// Make sure the destination folder exists
if (!Folder::create($destination)) {
throw new \RuntimeException('Unable to create destination folder ' . \dirname($destination));
}
// Read files in the archive
for ($index = 0; $index < $zip->numFiles; $index++) {
$file = $zip->getNameIndex($index);
if (substr($file, -1) === '/') {
continue;
}
$buffer = $zip->getFromIndex($index);
if ($buffer === false) {
throw new \RuntimeException('Unable to read ZIP entry');
}
if (!$this->isBelow($destination, $destination . '/' . $file)) {
throw new \RuntimeException('Unable to write outside of destination path', 100);
}
if (File::write($destination . '/' . $file, $buffer) === false) {
throw new \RuntimeException('Unable to write ZIP entry to file ' . $destination . '/' . $file);
}
}
$zip->close();
return true;
}
/**
* Get the list of files/data from a ZIP archive buffer.
*
* <pre>
* KEY: Position in zipfile
* VALUES: 'attr' -- File attributes
* 'crc' -- CRC checksum
* 'csize' -- Compressed file size
* 'date' -- File modification time
* 'name' -- Filename
* 'method'-- Compression method
* 'size' -- Original file size
* 'type' -- File type
* </pre>
*
* @param string $data The ZIP archive buffer.
*
* @return boolean True on success
*
* @since 1.0
* @throws \RuntimeException
*/
private function readZipInfo($data)
{
$entries = [];
// Find the last central directory header entry
$fhLast = strpos($data, self::CTRL_DIR_END);
do {
$last = $fhLast;
} while (($fhLast = strpos($data, self::CTRL_DIR_END, $fhLast + 1)) !== false);
// Find the central directory offset
$offset = 0;
if ($last) {
$endOfCentralDirectory = unpack(
'vNumberOfDisk/vNoOfDiskWithStartOfCentralDirectory/vNoOfCentralDirectoryEntriesOnDisk/' .
'vTotalCentralDirectoryEntries/VSizeOfCentralDirectory/VCentralDirectoryOffset/vCommentLength',
substr($data, $last + 4)
);
$offset = $endOfCentralDirectory['CentralDirectoryOffset'];
}
// Get details from central directory structure.
$fhStart = strpos($data, self::CTRL_DIR_HEADER, $offset);
$dataLength = \strlen($data);
do {
if ($dataLength < $fhStart + 31) {
throw new \RuntimeException('Invalid ZIP Data');
}
$info = unpack('vMethod/VTime/VCRC32/VCompressed/VUncompressed/vLength', substr($data, $fhStart + 10, 20));
$name = substr($data, $fhStart + 46, $info['Length']);
$entries[$name] = [
'attr' => null,
'crc' => sprintf('%08s', dechex($info['CRC32'])),
'csize' => $info['Compressed'],
'date' => null,
'_dataStart' => null,
'name' => $name,
'method' => self::METHODS[$info['Method']],
'_method' => $info['Method'],
'size' => $info['Uncompressed'],
'type' => null,
];
$entries[$name]['date'] = mktime(
($info['Time'] >> 11) & 0x1f,
($info['Time'] >> 5) & 0x3f,
($info['Time'] << 1) & 0x3e,
($info['Time'] >> 21) & 0x07,
($info['Time'] >> 16) & 0x1f,
(($info['Time'] >> 25) & 0x7f) + 1980
);
if ($dataLength < $fhStart + 43) {
throw new \RuntimeException('Invalid ZIP data');
}
$info = unpack('vInternal/VExternal/VOffset', substr($data, $fhStart + 36, 10));
$entries[$name]['type'] = ($info['Internal'] & 0x01) ? 'text' : 'binary';
$entries[$name]['attr'] = (($info['External'] & 0x10) ? 'D' : '-') . (($info['External'] & 0x20) ? 'A' : '-')
. (($info['External'] & 0x03) ? 'S' : '-') . (($info['External'] & 0x02) ? 'H' : '-') . (($info['External'] & 0x01) ? 'R' : '-');
$entries[$name]['offset'] = $info['Offset'];
// Get details from local file header since we have the offset
$lfhStart = strpos($data, self::FILE_HEADER, $entries[$name]['offset']);
if ($dataLength < $lfhStart + 34) {
throw new \RuntimeException('Invalid ZIP Data');
}
$info = unpack('vMethod/VTime/VCRC32/VCompressed/VUncompressed/vLength/vExtraLength', substr($data, $lfhStart + 8, 25));
$name = substr($data, $lfhStart + 30, $info['Length']);
$entries[$name]['_dataStart'] = $lfhStart + 30 + $info['Length'] + $info['ExtraLength'];
// Bump the max execution time because not using the built in php zip libs makes this process slow.
@set_time_limit(ini_get('max_execution_time'));
} while (($fhStart = strpos($data, self::CTRL_DIR_HEADER, $fhStart + 46)) !== false);
$this->metadata = array_values($entries);
return true;
}
/**
* Returns the file data for a file by offset in the ZIP archive
*
* @param integer $key The position of the file in the archive.
*
* @return string Uncompressed file data buffer.
*
* @since 1.0
*/
private function getFileData(int $key): string
{
if ($this->metadata[$key]['_method'] == 0x8) {
return gzinflate(substr($this->data, $this->metadata[$key]['_dataStart'], $this->metadata[$key]['csize']));
}
if ($this->metadata[$key]['_method'] == 0x0) {
// Files that aren't compressed.
return substr($this->data, $this->metadata[$key]['_dataStart'], $this->metadata[$key]['csize']);
}
if ($this->metadata[$key]['_method'] == 0x12) {
// If bz2 extension is loaded use it
if (\extension_loaded('bz2')) {
return bzdecompress(substr($this->data, $this->metadata[$key]['_dataStart'], $this->metadata[$key]['csize']));
}
}
return '';
}
/**
* Converts a UNIX timestamp to a 4-byte DOS date and time format (date in high 2-bytes, time in low 2-bytes allowing magnitude comparison).
*
* @param integer $unixtime The current UNIX timestamp.
*
* @return integer The current date in a 4-byte DOS format.
*
* @since 1.0
*/
protected function unix2DosTime($unixtime = null)
{
$timearray = $unixtime === null ? getdate() : getdate($unixtime);
if ($timearray['year'] < 1980) {
$timearray['year'] = 1980;
$timearray['mon'] = 1;
$timearray['mday'] = 1;
$timearray['hours'] = 0;
$timearray['minutes'] = 0;
$timearray['seconds'] = 0;
}
return (($timearray['year'] - 1980) << 25) | ($timearray['mon'] << 21) | ($timearray['mday'] << 16) | ($timearray['hours'] << 11) |
($timearray['minutes'] << 5) | ($timearray['seconds'] >> 1);
}
/**
* Adds a "file" to the ZIP archive.
*
* @param array $file File data array to add
* @param array $contents An array of existing zipped files.
* @param array $ctrldir An array of central directory information.
*
* @return void
*
* @since 1.0
* @todo Review and finish implementation
*/
private function addToZipFile(array &$file, array &$contents, array &$ctrldir): void
{
$data = &$file['data'];
$name = str_replace('\\', '/', $file['name']);
// See if time/date information has been provided.
$ftime = null;
if (isset($file['time'])) {
$ftime = $file['time'];
}
// Get the hex time.
$dtime = dechex($this->unix2DosTime($ftime));
$hexdtime = \chr(hexdec($dtime[6] . $dtime[7])) . \chr(hexdec($dtime[4] . $dtime[5])) . \chr(hexdec($dtime[2] . $dtime[3]))
. \chr(hexdec($dtime[0] . $dtime[1]));
// Begin creating the ZIP data.
$fr = self::FILE_HEADER;
// Version needed to extract.
$fr .= "\x14\x00";
// General purpose bit flag.
$fr .= "\x00\x00";
// Compression method.
$fr .= "\x08\x00";
// Last modification time/date.
$fr .= $hexdtime;
// "Local file header" segment.
$uncLen = \strlen($data);
$crc = crc32($data);
$zdata = gzcompress($data);
$zdata = substr(substr($zdata, 0, -4), 2);
$cLen = \strlen($zdata);
// CRC 32 information.
$fr .= pack('V', $crc);
// Compressed filesize.
$fr .= pack('V', $cLen);
// Uncompressed filesize.
$fr .= pack('V', $uncLen);
// Length of filename.
$fr .= pack('v', \strlen($name));
// Extra field length.
$fr .= pack('v', 0);
// File name.
$fr .= $name;
// "File data" segment.
$fr .= $zdata;
// Add this entry to array.
$oldOffset = \strlen(implode('', $contents));
$contents[] = &$fr;
// Add to central directory record.
$cdrec = self::CTRL_DIR_HEADER;
// Version made by.
$cdrec .= "\x00\x00";
// Version needed to extract
$cdrec .= "\x14\x00";
// General purpose bit flag
$cdrec .= "\x00\x00";
// Compression method
$cdrec .= "\x08\x00";
// Last mod time/date.
$cdrec .= $hexdtime;
// CRC 32 information.
$cdrec .= pack('V', $crc);
// Compressed filesize.
$cdrec .= pack('V', $cLen);
// Uncompressed filesize.
$cdrec .= pack('V', $uncLen);
// Length of filename.
$cdrec .= pack('v', \strlen($name));
// Extra field length.
$cdrec .= pack('v', 0);
// File comment length.
$cdrec .= pack('v', 0);
// Disk number start.
$cdrec .= pack('v', 0);
// Internal file attributes.
$cdrec .= pack('v', 0);
// External file attributes -'archive' bit set.
$cdrec .= pack('V', 32);
// Relative offset of local header.
$cdrec .= pack('V', $oldOffset);
// File name.
$cdrec .= $name;
// Save to central directory array.
$ctrldir[] = &$cdrec;
}
/**
* Creates the ZIP file.
*
* Official ZIP file format: http://www.pkware.com/appnote.txt
*
* @param array $contents An array of existing zipped files.
* @param array $ctrlDir An array of central directory information.
* @param string $path The path to store the archive.
*
* @return boolean True if successful
*
* @since 1.0
* @todo Review and finish implementation
*/
private function createZipFile(array $contents, array $ctrlDir, string $path): bool
{
$data = implode('', $contents);
$dir = implode('', $ctrlDir);
/*
* Buffer data:
* Total # of entries "on this disk".
* Total # of entries overall.
* Size of central directory.
* Offset to start of central dir.
* ZIP file comment length.
*/
$buffer = $data . $dir . self::CTRL_DIR_END .
pack('v', \count($ctrlDir)) .
pack('v', \count($ctrlDir)) .
pack('V', \strlen($dir)) .
pack('V', \strlen($data)) .
"\x00\x00";
return File::write($path, $buffer);
}
/**
* Check if a path is below a given destination path
*
* @param string $destination The destination path
* @param string $path The path to be checked
*
* @return boolean
*
* @since 1.1.10
*/
private function isBelow($destination, $path): bool
{
$absoluteRoot = Path::clean(Path::resolve($destination));
$absolutePath = Path::clean(Path::resolve($path));
return strpos($absolutePath, $absoluteRoot) === 0;
}
}