simplify

1 files changed, 0 insertions, 690 deletions

diff --git a/library/phpsec/Crypt/TripleDES.php b/library/phpsec/Crypt/TripleDES.php
deleted file mode 100644
index 4d0dbbca0..000000000
--- a/library/phpsec/Crypt/TripleDES.php
+++ /dev/null
@@ -1,690 +0,0 @@
-<?php

-/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */

-

-/**

- * Pure-PHP implementation of Triple DES.

- *

- * Uses mcrypt, if available, and an internal implementation, otherwise.  Operates in the EDE3 mode (encrypt-decrypt-encrypt).

- *

- * PHP versions 4 and 5

- *

- * Here's a short example of how to use this library:

- * <code>

- * <?php

- *    include('Crypt/TripleDES.php');

- *

- *    $des = new Crypt_TripleDES();

- *

- *    $des->setKey('abcdefghijklmnopqrstuvwx');

- *

- *    $size = 10 * 1024;

- *    $plaintext = '';

- *    for ($i = 0; $i < $size; $i++) {

- *        $plaintext.= 'a';

- *    }

- *

- *    echo $des->decrypt($des->encrypt($plaintext));

- * ?>

- * </code>

- *

- * LICENSE: This library is free software; you can redistribute it and/or

- * modify it under the terms of the GNU Lesser General Public

- * License as published by the Free Software Foundation; either

- * version 2.1 of the License, or (at your option) any later version.

- *

- * This library is distributed in the hope that it will be useful,

- * but WITHOUT ANY WARRANTY; without even the implied warranty of

- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

- * Lesser General Public License for more details.

- *

- * You should have received a copy of the GNU Lesser General Public

- * License along with this library; if not, write to the Free Software

- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,

- * MA  02111-1307  USA

- *

- * @category   Crypt

- * @package    Crypt_TripleDES

- * @author     Jim Wigginton <terrafrost@php.net>

- * @copyright  MMVII Jim Wigginton

- * @license    http://www.gnu.org/licenses/lgpl.txt

- * @version    $Id: TripleDES.php,v 1.13 2010/02/26 03:40:25 terrafrost Exp $

- * @link       http://phpseclib.sourceforge.net

- */

-

-/**

- * Include Crypt_DES

- */

-require_once 'DES.php';

-

-/**

- * Encrypt / decrypt using inner chaining

- *

- * Inner chaining is used by SSH-1 and is generally considered to be less secure then outer chaining (CRYPT_DES_MODE_CBC3).

- */

-define('CRYPT_DES_MODE_3CBC', 3);

-

-/**

- * Encrypt / decrypt using outer chaining

- *

- * Outer chaining is used by SSH-2 and when the mode is set to CRYPT_DES_MODE_CBC.

- */

-define('CRYPT_DES_MODE_CBC3', CRYPT_DES_MODE_CBC);

-

-/**

- * Pure-PHP implementation of Triple DES.

- *

- * @author  Jim Wigginton <terrafrost@php.net>

- * @version 0.1.0

- * @access  public

- * @package Crypt_TerraDES

- */

-class Crypt_TripleDES {

-    /**

-     * The Three Keys

-     *

-     * @see Crypt_TripleDES::setKey()

-     * @var String

-     * @access private

-     */

-    var $key = "\0\0\0\0\0\0\0\0";

-

-    /**

-     * The Encryption Mode

-     *

-     * @see Crypt_TripleDES::Crypt_TripleDES()

-     * @var Integer

-     * @access private

-     */

-    var $mode = CRYPT_DES_MODE_CBC;

-

-    /**

-     * Continuous Buffer status

-     *

-     * @see Crypt_TripleDES::enableContinuousBuffer()

-     * @var Boolean

-     * @access private

-     */

-    var $continuousBuffer = false;

-

-    /**

-     * Padding status

-     *

-     * @see Crypt_TripleDES::enablePadding()

-     * @var Boolean

-     * @access private

-     */

-    var $padding = true;

-

-    /**

-     * The Initialization Vector

-     *

-     * @see Crypt_TripleDES::setIV()

-     * @var String

-     * @access private

-     */

-    var $iv = "\0\0\0\0\0\0\0\0";

-

-    /**

-     * A "sliding" Initialization Vector

-     *

-     * @see Crypt_TripleDES::enableContinuousBuffer()

-     * @var String

-     * @access private

-     */

-    var $encryptIV = "\0\0\0\0\0\0\0\0";

-

-    /**

-     * A "sliding" Initialization Vector

-     *

-     * @see Crypt_TripleDES::enableContinuousBuffer()

-     * @var String

-     * @access private

-     */

-    var $decryptIV = "\0\0\0\0\0\0\0\0";

-

-    /**

-     * The Crypt_DES objects

-     *

-     * @var Array

-     * @access private

-     */

-    var $des;

-

-    /**

-     * mcrypt resource for encryption

-     *

-     * The mcrypt resource can be recreated every time something needs to be created or it can be created just once.

-     * Since mcrypt operates in continuous mode, by default, it'll need to be recreated when in non-continuous mode.

-     *

-     * @see Crypt_AES::encrypt()

-     * @var String

-     * @access private

-     */

-    var $enmcrypt;

-

-    /**

-     * mcrypt resource for decryption

-     *

-     * The mcrypt resource can be recreated every time something needs to be created or it can be created just once.

-     * Since mcrypt operates in continuous mode, by default, it'll need to be recreated when in non-continuous mode.

-     *

-     * @see Crypt_AES::decrypt()

-     * @var String

-     * @access private

-     */

-    var $demcrypt;

-

-    /**

-     * Does the (en|de)mcrypt resource need to be (re)initialized?

-     *

-     * @see setKey()

-     * @see setIV()

-     * @var Boolean

-     * @access private

-     */

-    var $changed = true;

-

-    /**

-     * Default Constructor.

-     *

-     * Determines whether or not the mcrypt extension should be used.  $mode should only, at present, be

-     * CRYPT_DES_MODE_ECB or CRYPT_DES_MODE_CBC.  If not explictly set, CRYPT_DES_MODE_CBC will be used.

-     *

-     * @param optional Integer $mode

-     * @return Crypt_TripleDES

-     * @access public

-     */

-    function Crypt_TripleDES($mode = CRYPT_DES_MODE_CBC)

-    {

-        if ( !defined('CRYPT_DES_MODE') ) {

-            switch (true) {

-                case extension_loaded('mcrypt'):

-                    // i'd check to see if des was supported, by doing in_array('des', mcrypt_list_algorithms('')),

-                    // but since that can be changed after the object has been created, there doesn't seem to be

-                    // a lot of point...

-                    define('CRYPT_DES_MODE', CRYPT_DES_MODE_MCRYPT);

-                    break;

-                default:

-                    define('CRYPT_DES_MODE', CRYPT_DES_MODE_INTERNAL);

-            }

-        }

-

-        if ( $mode == CRYPT_DES_MODE_3CBC ) {

-            $this->mode = CRYPT_DES_MODE_3CBC;

-            $this->des = array(

-                new Crypt_DES(CRYPT_DES_MODE_CBC),

-                new Crypt_DES(CRYPT_DES_MODE_CBC),

-                new Crypt_DES(CRYPT_DES_MODE_CBC)

-            );

-

-            // we're going to be doing the padding, ourselves, so disable it in the Crypt_DES objects

-            $this->des[0]->disablePadding();

-            $this->des[1]->disablePadding();

-            $this->des[2]->disablePadding();

-

-            return;

-        }

-

-        switch ( CRYPT_DES_MODE ) {

-            case CRYPT_DES_MODE_MCRYPT:

-                switch ($mode) {

-                    case CRYPT_DES_MODE_ECB:

-                        $this->mode = MCRYPT_MODE_ECB;

-                        break;

-                    case CRYPT_DES_MODE_CTR:

-                        $this->mode = 'ctr';

-                        break;

-                    case CRYPT_DES_MODE_CBC:

-                    default:

-                        $this->mode = MCRYPT_MODE_CBC;

-                }

-

-                break;

-            default:

-                $this->des = array(

-                    new Crypt_DES(CRYPT_DES_MODE_ECB),

-                    new Crypt_DES(CRYPT_DES_MODE_ECB),

-                    new Crypt_DES(CRYPT_DES_MODE_ECB)

-                );

- 

-                // we're going to be doing the padding, ourselves, so disable it in the Crypt_DES objects

-                $this->des[0]->disablePadding();

-                $this->des[1]->disablePadding();

-                $this->des[2]->disablePadding();

-

-                switch ($mode) {

-                    case CRYPT_DES_MODE_ECB:

-                    case CRYPT_DES_MODE_CTR:

-                    case CRYPT_DES_MODE_CBC:

-                        $this->mode = $mode;

-                        break;

-                    default:

-                        $this->mode = CRYPT_DES_MODE_CBC;

-                }

-        }

-    }

-

-    /**

-     * Sets the key.

-     *

-     * Keys can be of any length.  Triple DES, itself, can use 128-bit (eg. strlen($key) == 16) or

-     * 192-bit (eg. strlen($key) == 24) keys.  This function pads and truncates $key as appropriate.

-     *

-     * DES also requires that every eighth bit be a parity bit, however, we'll ignore that.

-     *

-     * If the key is not explicitly set, it'll be assumed to be all zero's.

-     *

-     * @access public

-     * @param String $key

-     */

-    function setKey($key)

-    {

-        $length = strlen($key);

-        if ($length > 8) {

-            $key = str_pad($key, 24, chr(0));

-            // if $key is between 64 and 128-bits, use the first 64-bits as the last, per this:

-            // http://php.net/function.mcrypt-encrypt#47973

-            //$key = $length <= 16 ? substr_replace($key, substr($key, 0, 8), 16) : substr($key, 0, 24);

-        }

-        $this->key = $key;

-        switch (true) {

-            case CRYPT_DES_MODE == CRYPT_DES_MODE_INTERNAL:

-            case $this->mode == CRYPT_DES_MODE_3CBC:

-                $this->des[0]->setKey(substr($key,  0, 8));

-                $this->des[1]->setKey(substr($key,  8, 8));

-                $this->des[2]->setKey(substr($key, 16, 8));

-        }

-        $this->changed = true;

-    }

-

-    /**

-     * Sets the initialization vector. (optional)

-     *

-     * SetIV is not required when CRYPT_DES_MODE_ECB is being used.  If not explictly set, it'll be assumed

-     * to be all zero's.

-     *

-     * @access public

-     * @param String $iv

-     */

-    function setIV($iv)

-    {

-        $this->encryptIV = $this->decryptIV = $this->iv = str_pad(substr($iv, 0, 8), 8, chr(0));

-        if ($this->mode == CRYPT_DES_MODE_3CBC) {

-            $this->des[0]->setIV($iv);

-            $this->des[1]->setIV($iv);

-            $this->des[2]->setIV($iv);

-        }

-        $this->changed = true;

-    }

-

-    /**

-     * Generate CTR XOR encryption key

-     *

-     * Encrypt the output of this and XOR it against the ciphertext / plaintext to get the

-     * plaintext / ciphertext in CTR mode.

-     *

-     * @see Crypt_DES::decrypt()

-     * @see Crypt_DES::encrypt()

-     * @access public

-     * @param Integer $length

-     * @param String $iv

-     */

-    function _generate_xor($length, &$iv)

-    {

-        $xor = '';

-        $num_blocks = ($length + 7) >> 3;

-        for ($i = 0; $i < $num_blocks; $i++) {

-            $xor.= $iv;

-            for ($j = 4; $j <= 8; $j+=4) {

-                $temp = substr($iv, -$j, 4);

-                switch ($temp) {

-                    case "\xFF\xFF\xFF\xFF":

-                        $iv = substr_replace($iv, "\x00\x00\x00\x00", -$j, 4);

-                        break;

-                    case "\x7F\xFF\xFF\xFF":

-                        $iv = substr_replace($iv, "\x80\x00\x00\x00", -$j, 4);

-                        break 2;

-                    default:

-                        extract(unpack('Ncount', $temp));

-                        $iv = substr_replace($iv, pack('N', $count + 1), -$j, 4);

-                        break 2;

-                }

-            }

-        }

-

-        return $xor;

-    }

-

-    /**

-     * Encrypts a message.

-     *

-     * @access public

-     * @param String $plaintext

-     */

-    function encrypt($plaintext)

-    {

-        if ($this->mode != CRYPT_DES_MODE_CTR && $this->mode != 'ctr') {

-            $plaintext = $this->_pad($plaintext);

-        }

-

-        // if the key is smaller then 8, do what we'd normally do

-        if ($this->mode == CRYPT_DES_MODE_3CBC && strlen($this->key) > 8) {

-            $ciphertext = $this->des[2]->encrypt($this->des[1]->decrypt($this->des[0]->encrypt($plaintext)));

-

-            return $ciphertext;

-        }

-

-        if ( CRYPT_DES_MODE == CRYPT_DES_MODE_MCRYPT ) {

-            if ($this->changed) {

-                if (!isset($this->enmcrypt)) {

-                    $this->enmcrypt = mcrypt_module_open(MCRYPT_3DES, '', $this->mode, '');

-                }

-                mcrypt_generic_init($this->enmcrypt, $this->key, $this->encryptIV);

-                $this->changed = false;

-            }

-

-            $ciphertext = mcrypt_generic($this->enmcrypt, $plaintext);

-

-            if (!$this->continuousBuffer) {

-                mcrypt_generic_init($this->enmcrypt, $this->key, $this->encryptIV);

-            }

-

-            return $ciphertext;

-        }

-

-        if (strlen($this->key) <= 8) {

-            $this->des[0]->mode = $this->mode;

-

-            return $this->des[0]->encrypt($plaintext);

-        }

-

-        // we pad with chr(0) since that's what mcrypt_generic does.  to quote from http://php.net/function.mcrypt-generic :

-        // "The data is padded with "\0" to make sure the length of the data is n * blocksize."

-        $plaintext = str_pad($plaintext, ceil(strlen($plaintext) / 8) * 8, chr(0));

-

-        $des = $this->des;

-

-        $ciphertext = '';

-        switch ($this->mode) {

-            case CRYPT_DES_MODE_ECB:

-                for ($i = 0; $i < strlen($plaintext); $i+=8) {

-                    $block = substr($plaintext, $i, 8);

-                    $block = $des[0]->_processBlock($block, CRYPT_DES_ENCRYPT);

-                    $block = $des[1]->_processBlock($block, CRYPT_DES_DECRYPT);

-                    $block = $des[2]->_processBlock($block, CRYPT_DES_ENCRYPT);

-                    $ciphertext.= $block;

-                }

-                break;

-            case CRYPT_DES_MODE_CBC:

-                $xor = $this->encryptIV;

-                for ($i = 0; $i < strlen($plaintext); $i+=8) {

-                    $block = substr($plaintext, $i, 8) ^ $xor;

-                    $block = $des[0]->_processBlock($block, CRYPT_DES_ENCRYPT);

-                    $block = $des[1]->_processBlock($block, CRYPT_DES_DECRYPT);

-                    $block = $des[2]->_processBlock($block, CRYPT_DES_ENCRYPT);

-                    $xor = $block;

-                    $ciphertext.= $block;

-                }

-                if ($this->continuousBuffer) {

-                    $this->encryptIV = $xor;

-                }

-                break;

-            case CRYPT_DES_MODE_CTR:

-                $xor = $this->encryptIV;

-                for ($i = 0; $i < strlen($plaintext); $i+=8) {

-                    $key = $this->_generate_xor(8, $xor);

-                    $key = $des[0]->_processBlock($key, CRYPT_DES_ENCRYPT);

-                    $key = $des[1]->_processBlock($key, CRYPT_DES_DECRYPT);

-                    $key = $des[2]->_processBlock($key, CRYPT_DES_ENCRYPT);

-                    $block = substr($plaintext, $i, 8);

-                    $ciphertext.= $block ^ $key;

-                }

-                if ($this->continuousBuffer) {

-                    $this->encryptIV = $xor;

-                }

-        }

-

-        return $ciphertext;

-    }

-

-    /**

-     * Decrypts a message.

-     *

-     * @access public

-     * @param String $ciphertext

-     */

-    function decrypt($ciphertext)

-    {

-        if ($this->mode == CRYPT_DES_MODE_3CBC && strlen($this->key) > 8) {

-            $plaintext = $this->des[0]->decrypt($this->des[1]->encrypt($this->des[2]->decrypt($ciphertext)));

-

-            return $this->_unpad($plaintext);

-        }

-

-        // we pad with chr(0) since that's what mcrypt_generic does.  to quote from http://php.net/function.mcrypt-generic :

-        // "The data is padded with "\0" to make sure the length of the data is n * blocksize."

-        $ciphertext = str_pad($ciphertext, (strlen($ciphertext) + 7) & 0xFFFFFFF8, chr(0));

-

-        if ( CRYPT_DES_MODE == CRYPT_DES_MODE_MCRYPT ) {

-            if ($this->changed) {

-                if (!isset($this->demcrypt)) {

-                    $this->demcrypt = mcrypt_module_open(MCRYPT_3DES, '', $this->mode, '');

-                }

-                mcrypt_generic_init($this->demcrypt, $this->key, $this->decryptIV);

-                $this->changed = false;

-            }

-

-            $plaintext = mdecrypt_generic($this->demcrypt, $ciphertext);

-

-            if (!$this->continuousBuffer) {

-                mcrypt_generic_init($this->demcrypt, $this->key, $this->decryptIV);

-            }

-

-            return $this->mode != 'ctr' ? $this->_unpad($plaintext) : $plaintext;

-        }

-

-        if (strlen($this->key) <= 8) {

-            $this->des[0]->mode = $this->mode;

-

-            return $this->_unpad($this->des[0]->decrypt($plaintext));

-        }

-

-        $des = $this->des;

-

-        $plaintext = '';

-        switch ($this->mode) {

-            case CRYPT_DES_MODE_ECB:

-                for ($i = 0; $i < strlen($ciphertext); $i+=8) {

-                    $block = substr($ciphertext, $i, 8);

-                    $block = $des[2]->_processBlock($block, CRYPT_DES_DECRYPT);

-                    $block = $des[1]->_processBlock($block, CRYPT_DES_ENCRYPT);

-                    $block = $des[0]->_processBlock($block, CRYPT_DES_DECRYPT);

-                    $plaintext.= $block;

-                }

-                break;

-            case CRYPT_DES_MODE_CBC:

-                $xor = $this->decryptIV;

-                for ($i = 0; $i < strlen($ciphertext); $i+=8) {

-                    $orig = $block = substr($ciphertext, $i, 8);

-                    $block = $des[2]->_processBlock($block, CRYPT_DES_DECRYPT);

-                    $block = $des[1]->_processBlock($block, CRYPT_DES_ENCRYPT);

-                    $block = $des[0]->_processBlock($block, CRYPT_DES_DECRYPT);

-                    $plaintext.= $block ^ $xor;

-                    $xor = $orig;

-                }

-                if ($this->continuousBuffer) {

-                    $this->decryptIV = $xor;

-                }

-                break;

-            case CRYPT_DES_MODE_CTR:

-                $xor = $this->decryptIV;

-                for ($i = 0; $i < strlen($ciphertext); $i+=8) {

-                    $key = $this->_generate_xor(8, $xor);

-                    $key = $des[0]->_processBlock($key, CRYPT_DES_ENCRYPT);

-                    $key = $des[1]->_processBlock($key, CRYPT_DES_DECRYPT);

-                    $key = $des[2]->_processBlock($key, CRYPT_DES_ENCRYPT);

-                    $block = substr($ciphertext, $i, 8);

-                    $plaintext.= $block ^ $key;

-                }

-                if ($this->continuousBuffer) {

-                    $this->decryptIV = $xor;

-                }

-        }

-

-        return $this->mode != CRYPT_DES_MODE_CTR ? $this->_unpad($plaintext) : $plaintext;

-    }

-

-    /**

-     * Treat consecutive "packets" as if they are a continuous buffer.

-     *

-     * Say you have a 16-byte plaintext $plaintext.  Using the default behavior, the two following code snippets

-     * will yield different outputs:

-     *

-     * <code>

-     *    echo $des->encrypt(substr($plaintext, 0, 8));

-     *    echo $des->encrypt(substr($plaintext, 8, 8));

-     * </code>

-     * <code>

-     *    echo $des->encrypt($plaintext);

-     * </code>

-     *

-     * The solution is to enable the continuous buffer.  Although this will resolve the above discrepancy, it creates

-     * another, as demonstrated with the following:

-     *

-     * <code>

-     *    $des->encrypt(substr($plaintext, 0, 8));

-     *    echo $des->decrypt($des->encrypt(substr($plaintext, 8, 8)));

-     * </code>

-     * <code>

-     *    echo $des->decrypt($des->encrypt(substr($plaintext, 8, 8)));

-     * </code>

-     *

-     * With the continuous buffer disabled, these would yield the same output.  With it enabled, they yield different

-     * outputs.  The reason is due to the fact that the initialization vector's change after every encryption /

-     * decryption round when the continuous buffer is enabled.  When it's disabled, they remain constant.

-     *

-     * Put another way, when the continuous buffer is enabled, the state of the Crypt_DES() object changes after each

-     * encryption / decryption round, whereas otherwise, it'd remain constant.  For this reason, it's recommended that

-     * continuous buffers not be used.  They do offer better security and are, in fact, sometimes required (SSH uses them),

-     * however, they are also less intuitive and more likely to cause you problems.

-     *

-     * @see Crypt_TripleDES::disableContinuousBuffer()

-     * @access public

-     */

-    function enableContinuousBuffer()

-    {

-        $this->continuousBuffer = true;

-        if ($this->mode == CRYPT_DES_MODE_3CBC) {

-            $this->des[0]->enableContinuousBuffer();

-            $this->des[1]->enableContinuousBuffer();

-            $this->des[2]->enableContinuousBuffer();

-        }

-    }

-

-    /**

-     * Treat consecutive packets as if they are a discontinuous buffer.

-     *

-     * The default behavior.

-     *

-     * @see Crypt_TripleDES::enableContinuousBuffer()

-     * @access public

-     */

-    function disableContinuousBuffer()

-    {

-        $this->continuousBuffer = false;

-        $this->encryptIV = $this->iv;

-        $this->decryptIV = $this->iv;

-

-        if ($this->mode == CRYPT_DES_MODE_3CBC) {

-            $this->des[0]->disableContinuousBuffer();

-            $this->des[1]->disableContinuousBuffer();

-            $this->des[2]->disableContinuousBuffer();

-        }

-    }

-

-    /**

-     * Pad "packets".

-     *

-     * DES works by encrypting eight bytes at a time.  If you ever need to encrypt or decrypt something that's not

-     * a multiple of eight, it becomes necessary to pad the input so that it's length is a multiple of eight.

-     *

-     * Padding is enabled by default.  Sometimes, however, it is undesirable to pad strings.  Such is the case in SSH1,

-     * where "packets" are padded with random bytes before being encrypted.  Unpad these packets and you risk stripping

-     * away characters that shouldn't be stripped away. (SSH knows how many bytes are added because the length is

-     * transmitted separately)

-     *

-     * @see Crypt_TripleDES::disablePadding()

-     * @access public

-     */

-    function enablePadding()

-    {

-        $this->padding = true;

-    }

-

-    /**

-     * Do not pad packets.

-     *

-     * @see Crypt_TripleDES::enablePadding()

-     * @access public

-     */

-    function disablePadding()

-    {

-        $this->padding = false;

-    }

-

-    /**

-     * Pads a string

-     *

-     * Pads a string using the RSA PKCS padding standards so that its length is a multiple of the blocksize (8).

-     * 8 - (strlen($text) & 7) bytes are added, each of which is equal to chr(8 - (strlen($text) & 7)

-     *

-     * If padding is disabled and $text is not a multiple of the blocksize, the string will be padded regardless

-     * and padding will, hence forth, be enabled.

-     *

-     * @see Crypt_TripleDES::_unpad()

-     * @access private

-     */

-    function _pad($text)

-    {

-        $length = strlen($text);

-

-        if (!$this->padding) {

-            if (($length & 7) == 0) {

-                return $text;

-            } else {

-                user_error("The plaintext's length ($length) is not a multiple of the block size (8)", E_USER_NOTICE);

-                $this->padding = true;

-            }

-        }

-

-        $pad = 8 - ($length & 7);

-        return str_pad($text, $length + $pad, chr($pad));

-    }

-

-    /**

-     * Unpads a string

-     *

-     * If padding is enabled and the reported padding length is invalid the encryption key will be assumed to be wrong

-     * and false will be returned.

-     *

-     * @see Crypt_TripleDES::_pad()

-     * @access private

-     */

-    function _unpad($text)

-    {

-        if (!$this->padding) {

-            return $text;

-        }

-

-        $length = ord($text[strlen($text) - 1]);

-

-        if (!$length || $length > 8) {

-            return false;

-        }

-

-        return substr($text, 0, -$length);

-    }

-}

-

-// vim: ts=4:sw=4:et:

-// vim6: fdl=1:
\ No newline at end of file