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-rw-r--r--vendor/composer/InstalledVersions.php4
-rw-r--r--vendor/composer/installed.php4
-rw-r--r--vendor/phpseclib/phpseclib/phpseclib/Crypt/Base.php2699
-rw-r--r--vendor/phpseclib/phpseclib/phpseclib/Net/SCP.php342
-rw-r--r--vendor/phpseclib/phpseclib/phpseclib/Net/SSH1.php1646
5 files changed, 4691 insertions, 4 deletions
diff --git a/vendor/composer/InstalledVersions.php b/vendor/composer/InstalledVersions.php
index 97df88926..e597e0eb3 100644
--- a/vendor/composer/InstalledVersions.php
+++ b/vendor/composer/InstalledVersions.php
@@ -30,7 +30,7 @@ private static $installed = array (
'aliases' =>
array (
),
- 'reference' => '34b28cd8d36c7805e65c442ff1588ccf5165387a',
+ 'reference' => 'a6162d3134cd7fcde4f45064b75f90008a7f8177',
'name' => 'zotlabs/hubzilla',
),
'versions' =>
@@ -272,7 +272,7 @@ private static $installed = array (
'aliases' =>
array (
),
- 'reference' => '34b28cd8d36c7805e65c442ff1588ccf5165387a',
+ 'reference' => 'a6162d3134cd7fcde4f45064b75f90008a7f8177',
),
),
);
diff --git a/vendor/composer/installed.php b/vendor/composer/installed.php
index 9ddb06cc3..945fe4368 100644
--- a/vendor/composer/installed.php
+++ b/vendor/composer/installed.php
@@ -6,7 +6,7 @@
'aliases' =>
array (
),
- 'reference' => '34b28cd8d36c7805e65c442ff1588ccf5165387a',
+ 'reference' => 'a6162d3134cd7fcde4f45064b75f90008a7f8177',
'name' => 'zotlabs/hubzilla',
),
'versions' =>
@@ -248,7 +248,7 @@
'aliases' =>
array (
),
- 'reference' => '34b28cd8d36c7805e65c442ff1588ccf5165387a',
+ 'reference' => 'a6162d3134cd7fcde4f45064b75f90008a7f8177',
),
),
);
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Crypt/Base.php b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Base.php
new file mode 100644
index 000000000..efbcd242b
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Crypt/Base.php
@@ -0,0 +1,2699 @@
+<?php
+
+/**
+ * Base Class for all \phpseclib\Crypt\* cipher classes
+ *
+ * PHP version 5
+ *
+ * Internally for phpseclib developers:
+ * If you plan to add a new cipher class, please note following rules:
+ *
+ * - The new \phpseclib\Crypt\* cipher class should extend \phpseclib\Crypt\Base
+ *
+ * - Following methods are then required to be overridden/overloaded:
+ *
+ * - _encryptBlock()
+ *
+ * - _decryptBlock()
+ *
+ * - _setupKey()
+ *
+ * - All other methods are optional to be overridden/overloaded
+ *
+ * - Look at the source code of the current ciphers how they extend \phpseclib\Crypt\Base
+ * and take one of them as a start up for the new cipher class.
+ *
+ * - Please read all the other comments/notes/hints here also for each class var/method
+ *
+ * @category Crypt
+ * @package Base
+ * @author Jim Wigginton <terrafrost@php.net>
+ * @author Hans-Juergen Petrich <petrich@tronic-media.com>
+ * @copyright 2007 Jim Wigginton
+ * @license http://www.opensource.org/licenses/mit-license.html MIT License
+ * @link http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib\Crypt;
+
+/**
+ * Base Class for all \phpseclib\Crypt\* cipher classes
+ *
+ * @package Base
+ * @author Jim Wigginton <terrafrost@php.net>
+ * @author Hans-Juergen Petrich <petrich@tronic-media.com>
+ */
+abstract class Base
+{
+ /**#@+
+ * @access public
+ * @see \phpseclib\Crypt\Base::encrypt()
+ * @see \phpseclib\Crypt\Base::decrypt()
+ */
+ /**
+ * Encrypt / decrypt using the Counter mode.
+ *
+ * Set to -1 since that's what Crypt/Random.php uses to index the CTR mode.
+ *
+ * @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Counter_.28CTR.29
+ */
+ const MODE_CTR = -1;
+ /**
+ * Encrypt / decrypt using the Electronic Code Book mode.
+ *
+ * @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Electronic_codebook_.28ECB.29
+ */
+ const MODE_ECB = 1;
+ /**
+ * Encrypt / decrypt using the Code Book Chaining mode.
+ *
+ * @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Cipher-block_chaining_.28CBC.29
+ */
+ const MODE_CBC = 2;
+ /**
+ * Encrypt / decrypt using the Cipher Feedback mode.
+ *
+ * @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Cipher_feedback_.28CFB.29
+ */
+ const MODE_CFB = 3;
+ /**
+ * Encrypt / decrypt using the Cipher Feedback mode (8bit)
+ */
+ const MODE_CFB8 = 38;
+ /**
+ * Encrypt / decrypt using the Output Feedback mode.
+ *
+ * @link http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation#Output_feedback_.28OFB.29
+ */
+ const MODE_OFB = 4;
+ /**
+ * Encrypt / decrypt using streaming mode.
+ */
+ const MODE_STREAM = 5;
+ /**#@-*/
+
+ /**
+ * Whirlpool available flag
+ *
+ * @see \phpseclib\Crypt\Base::_hashInlineCryptFunction()
+ * @var bool
+ * @access private
+ */
+ static $WHIRLPOOL_AVAILABLE;
+
+ /**#@+
+ * @access private
+ * @see \phpseclib\Crypt\Base::__construct()
+ */
+ /**
+ * Base value for the internal implementation $engine switch
+ */
+ const ENGINE_INTERNAL = 1;
+ /**
+ * Base value for the mcrypt implementation $engine switch
+ */
+ const ENGINE_MCRYPT = 2;
+ /**
+ * Base value for the mcrypt implementation $engine switch
+ */
+ const ENGINE_OPENSSL = 3;
+ /**#@-*/
+
+ /**
+ * The Encryption Mode
+ *
+ * @see self::__construct()
+ * @var int
+ * @access private
+ */
+ var $mode;
+
+ /**
+ * The Block Length of the block cipher
+ *
+ * @var int
+ * @access private
+ */
+ var $block_size = 16;
+
+ /**
+ * The Key
+ *
+ * @see self::setKey()
+ * @var string
+ * @access private
+ */
+ var $key = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
+
+ /**
+ * The Initialization Vector
+ *
+ * @see self::setIV()
+ * @var string
+ * @access private
+ */
+ var $iv;
+
+ /**
+ * A "sliding" Initialization Vector
+ *
+ * @see self::enableContinuousBuffer()
+ * @see self::_clearBuffers()
+ * @var string
+ * @access private
+ */
+ var $encryptIV;
+
+ /**
+ * A "sliding" Initialization Vector
+ *
+ * @see self::enableContinuousBuffer()
+ * @see self::_clearBuffers()
+ * @var string
+ * @access private
+ */
+ var $decryptIV;
+
+ /**
+ * Continuous Buffer status
+ *
+ * @see self::enableContinuousBuffer()
+ * @var bool
+ * @access private
+ */
+ var $continuousBuffer = false;
+
+ /**
+ * Encryption buffer for CTR, OFB and CFB modes
+ *
+ * @see self::encrypt()
+ * @see self::_clearBuffers()
+ * @var array
+ * @access private
+ */
+ var $enbuffer;
+
+ /**
+ * Decryption buffer for CTR, OFB and CFB modes
+ *
+ * @see self::decrypt()
+ * @see self::_clearBuffers()
+ * @var array
+ * @access private
+ */
+ var $debuffer;
+
+ /**
+ * 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 self::encrypt()
+ * @var resource
+ * @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 self::decrypt()
+ * @var resource
+ * @access private
+ */
+ var $demcrypt;
+
+ /**
+ * Does the enmcrypt resource need to be (re)initialized?
+ *
+ * @see \phpseclib\Crypt\Twofish::setKey()
+ * @see \phpseclib\Crypt\Twofish::setIV()
+ * @var bool
+ * @access private
+ */
+ var $enchanged = true;
+
+ /**
+ * Does the demcrypt resource need to be (re)initialized?
+ *
+ * @see \phpseclib\Crypt\Twofish::setKey()
+ * @see \phpseclib\Crypt\Twofish::setIV()
+ * @var bool
+ * @access private
+ */
+ var $dechanged = true;
+
+ /**
+ * mcrypt resource for CFB mode
+ *
+ * mcrypt's CFB mode, in (and only in) buffered context,
+ * is broken, so phpseclib implements the CFB mode by it self,
+ * even when the mcrypt php extension is available.
+ *
+ * In order to do the CFB-mode work (fast) phpseclib
+ * use a separate ECB-mode mcrypt resource.
+ *
+ * @link http://phpseclib.sourceforge.net/cfb-demo.phps
+ * @see self::encrypt()
+ * @see self::decrypt()
+ * @see self::_setupMcrypt()
+ * @var resource
+ * @access private
+ */
+ var $ecb;
+
+ /**
+ * Optimizing value while CFB-encrypting
+ *
+ * Only relevant if $continuousBuffer enabled
+ * and $engine == self::ENGINE_MCRYPT
+ *
+ * It's faster to re-init $enmcrypt if
+ * $buffer bytes > $cfb_init_len than
+ * using the $ecb resource furthermore.
+ *
+ * This value depends of the chosen cipher
+ * and the time it would be needed for it's
+ * initialization [by mcrypt_generic_init()]
+ * which, typically, depends on the complexity
+ * on its internaly Key-expanding algorithm.
+ *
+ * @see self::encrypt()
+ * @var int
+ * @access private
+ */
+ var $cfb_init_len = 600;
+
+ /**
+ * Does internal cipher state need to be (re)initialized?
+ *
+ * @see self::setKey()
+ * @see self::setIV()
+ * @see self::disableContinuousBuffer()
+ * @var bool
+ * @access private
+ */
+ var $changed = true;
+
+ /**
+ * Padding status
+ *
+ * @see self::enablePadding()
+ * @var bool
+ * @access private
+ */
+ var $padding = true;
+
+ /**
+ * Is the mode one that is paddable?
+ *
+ * @see self::__construct()
+ * @var bool
+ * @access private
+ */
+ var $paddable = false;
+
+ /**
+ * Holds which crypt engine internaly should be use,
+ * which will be determined automatically on __construct()
+ *
+ * Currently available $engines are:
+ * - self::ENGINE_OPENSSL (very fast, php-extension: openssl, extension_loaded('openssl') required)
+ * - self::ENGINE_MCRYPT (fast, php-extension: mcrypt, extension_loaded('mcrypt') required)
+ * - self::ENGINE_INTERNAL (slower, pure php-engine, no php-extension required)
+ *
+ * @see self::_setEngine()
+ * @see self::encrypt()
+ * @see self::decrypt()
+ * @var int
+ * @access private
+ */
+ var $engine;
+
+ /**
+ * Holds the preferred crypt engine
+ *
+ * @see self::_setEngine()
+ * @see self::setPreferredEngine()
+ * @var int
+ * @access private
+ */
+ var $preferredEngine;
+
+ /**
+ * The mcrypt specific name of the cipher
+ *
+ * Only used if $engine == self::ENGINE_MCRYPT
+ *
+ * @link http://www.php.net/mcrypt_module_open
+ * @link http://www.php.net/mcrypt_list_algorithms
+ * @see self::_setupMcrypt()
+ * @var string
+ * @access private
+ */
+ var $cipher_name_mcrypt;
+
+ /**
+ * The openssl specific name of the cipher
+ *
+ * Only used if $engine == self::ENGINE_OPENSSL
+ *
+ * @link http://www.php.net/openssl-get-cipher-methods
+ * @var string
+ * @access private
+ */
+ var $cipher_name_openssl;
+
+ /**
+ * The openssl specific name of the cipher in ECB mode
+ *
+ * If OpenSSL does not support the mode we're trying to use (CTR)
+ * it can still be emulated with ECB mode.
+ *
+ * @link http://www.php.net/openssl-get-cipher-methods
+ * @var string
+ * @access private
+ */
+ var $cipher_name_openssl_ecb;
+
+ /**
+ * The default salt used by setPassword()
+ *
+ * @see self::setPassword()
+ * @var string
+ * @access private
+ */
+ var $password_default_salt = 'phpseclib/salt';
+
+ /**
+ * The name of the performance-optimized callback function
+ *
+ * Used by encrypt() / decrypt()
+ * only if $engine == self::ENGINE_INTERNAL
+ *
+ * @see self::encrypt()
+ * @see self::decrypt()
+ * @see self::_setupInlineCrypt()
+ * @see self::$use_inline_crypt
+ * @var Callback
+ * @access private
+ */
+ var $inline_crypt;
+
+ /**
+ * Holds whether performance-optimized $inline_crypt() can/should be used.
+ *
+ * @see self::encrypt()
+ * @see self::decrypt()
+ * @see self::inline_crypt
+ * @var mixed
+ * @access private
+ */
+ var $use_inline_crypt = true;
+
+ /**
+ * If OpenSSL can be used in ECB but not in CTR we can emulate CTR
+ *
+ * @see self::_openssl_ctr_process()
+ * @var bool
+ * @access private
+ */
+ var $openssl_emulate_ctr = false;
+
+ /**
+ * Determines what options are passed to openssl_encrypt/decrypt
+ *
+ * @see self::isValidEngine()
+ * @var mixed
+ * @access private
+ */
+ var $openssl_options;
+
+ /**
+ * Has the key length explicitly been set or should it be derived from the key, itself?
+ *
+ * @see self::setKeyLength()
+ * @var bool
+ * @access private
+ */
+ var $explicit_key_length = false;
+
+ /**
+ * Don't truncate / null pad key
+ *
+ * @see self::_clearBuffers()
+ * @var bool
+ * @access private
+ */
+ var $skip_key_adjustment = false;
+
+ /**
+ * Default Constructor.
+ *
+ * Determines whether or not the mcrypt extension should be used.
+ *
+ * $mode could be:
+ *
+ * - self::MODE_ECB
+ *
+ * - self::MODE_CBC
+ *
+ * - self::MODE_CTR
+ *
+ * - self::MODE_CFB
+ *
+ * - self::MODE_OFB
+ *
+ * If not explicitly set, self::MODE_CBC will be used.
+ *
+ * @param int $mode
+ * @access public
+ */
+ function __construct($mode = self::MODE_CBC)
+ {
+ // $mode dependent settings
+ switch ($mode) {
+ case self::MODE_ECB:
+ $this->paddable = true;
+ $this->mode = self::MODE_ECB;
+ break;
+ case self::MODE_CTR:
+ case self::MODE_CFB:
+ case self::MODE_CFB8:
+ case self::MODE_OFB:
+ case self::MODE_STREAM:
+ $this->mode = $mode;
+ break;
+ case self::MODE_CBC:
+ default:
+ $this->paddable = true;
+ $this->mode = self::MODE_CBC;
+ }
+
+ $this->_setEngine();
+ }
+
+ /**
+ * Sets the initialization vector. (optional)
+ *
+ * SetIV is not required when self::MODE_ECB (or ie for AES: \phpseclib\Crypt\AES::MODE_ECB) is being used. If not explicitly set, it'll be assumed
+ * to be all zero's.
+ *
+ * @access public
+ * @param string $iv
+ * @internal Can be overwritten by a sub class, but does not have to be
+ */
+ function setIV($iv)
+ {
+ if ($this->mode == self::MODE_ECB) {
+ return;
+ }
+
+ $this->iv = $iv;
+ $this->changed = true;
+ }
+
+ /**
+ * Sets the key length.
+ *
+ * Keys with explicitly set lengths need to be treated accordingly
+ *
+ * @access public
+ * @param int $length
+ */
+ function setKeyLength($length)
+ {
+ $this->explicit_key_length = true;
+ $this->changed = true;
+ $this->_setEngine();
+ }
+
+ /**
+ * Returns the current key length in bits
+ *
+ * @access public
+ * @return int
+ */
+ function getKeyLength()
+ {
+ return $this->key_length << 3;
+ }
+
+ /**
+ * Returns the current block length in bits
+ *
+ * @access public
+ * @return int
+ */
+ function getBlockLength()
+ {
+ return $this->block_size << 3;
+ }
+
+ /**
+ * Sets the key.
+ *
+ * The min/max length(s) of the key depends on the cipher which is used.
+ * If the key not fits the length(s) of the cipher it will paded with null bytes
+ * up to the closest valid key length. If the key is more than max length,
+ * we trim the excess bits.
+ *
+ * If the key is not explicitly set, it'll be assumed to be all null bytes.
+ *
+ * @access public
+ * @param string $key
+ * @internal Could, but not must, extend by the child Crypt_* class
+ */
+ function setKey($key)
+ {
+ if (!$this->explicit_key_length) {
+ $this->setKeyLength(strlen($key) << 3);
+ $this->explicit_key_length = false;
+ }
+
+ $this->key = $key;
+ $this->changed = true;
+ $this->_setEngine();
+ }
+
+ /**
+ * Sets the password.
+ *
+ * Depending on what $method is set to, setPassword()'s (optional) parameters are as follows:
+ * {@link http://en.wikipedia.org/wiki/PBKDF2 pbkdf2} or pbkdf1:
+ * $hash, $salt, $count, $dkLen
+ *
+ * Where $hash (default = sha1) currently supports the following hashes: see: Crypt/Hash.php
+ *
+ * @see Crypt/Hash.php
+ * @param string $password
+ * @param string $method
+ * @return bool
+ * @access public
+ * @internal Could, but not must, extend by the child Crypt_* class
+ */
+ function setPassword($password, $method = 'pbkdf2')
+ {
+ $key = '';
+
+ switch ($method) {
+ default: // 'pbkdf2' or 'pbkdf1'
+ $func_args = func_get_args();
+
+ // Hash function
+ $hash = isset($func_args[2]) ? $func_args[2] : 'sha1';
+
+ // WPA and WPA2 use the SSID as the salt
+ $salt = isset($func_args[3]) ? $func_args[3] : $this->password_default_salt;
+
+ // RFC2898#section-4.2 uses 1,000 iterations by default
+ // WPA and WPA2 use 4,096.
+ $count = isset($func_args[4]) ? $func_args[4] : 1000;
+
+ // Keylength
+ if (isset($func_args[5])) {
+ $dkLen = $func_args[5];
+ } else {
+ $dkLen = $method == 'pbkdf1' ? 2 * $this->key_length : $this->key_length;
+ }
+
+ switch (true) {
+ case $method == 'pbkdf1':
+ $hashObj = new Hash();
+ $hashObj->setHash($hash);
+ if ($dkLen > $hashObj->getLength()) {
+ user_error('Derived key too long');
+ return false;
+ }
+ $t = $password . $salt;
+ for ($i = 0; $i < $count; ++$i) {
+ $t = $hashObj->hash($t);
+ }
+ $key = substr($t, 0, $dkLen);
+
+ $this->setKey(substr($key, 0, $dkLen >> 1));
+ $this->setIV(substr($key, $dkLen >> 1));
+
+ return true;
+ // Determining if php[>=5.5.0]'s hash_pbkdf2() function avail- and useable
+ case !function_exists('hash_pbkdf2'):
+ case !function_exists('hash_algos'):
+ case !in_array($hash, hash_algos()):
+ $i = 1;
+ $hmac = new Hash();
+ $hmac->setHash($hash);
+ $hmac->setKey($password);
+ while (strlen($key) < $dkLen) {
+ $f = $u = $hmac->hash($salt . pack('N', $i++));
+ for ($j = 2; $j <= $count; ++$j) {
+ $u = $hmac->hash($u);
+ $f^= $u;
+ }
+ $key.= $f;
+ }
+ $key = substr($key, 0, $dkLen);
+ break;
+ default:
+ $key = hash_pbkdf2($hash, $password, $salt, $count, $dkLen, true);
+ }
+ }
+
+ $this->setKey($key);
+
+ return true;
+ }
+
+ /**
+ * Encrypts a message.
+ *
+ * $plaintext will be padded with additional bytes such that it's length is a multiple of the block size. Other cipher
+ * implementations may or may not pad in the same manner. Other common approaches to padding and the reasons why it's
+ * necessary are discussed in the following
+ * URL:
+ *
+ * {@link http://www.di-mgt.com.au/cryptopad.html http://www.di-mgt.com.au/cryptopad.html}
+ *
+ * An alternative to padding is to, separately, send the length of the file. This is what SSH, in fact, does.
+ * strlen($plaintext) will still need to be a multiple of the block size, however, arbitrary values can be added to make it that
+ * length.
+ *
+ * @see self::decrypt()
+ * @access public
+ * @param string $plaintext
+ * @return string $ciphertext
+ * @internal Could, but not must, extend by the child Crypt_* class
+ */
+ function encrypt($plaintext)
+ {
+ if ($this->paddable) {
+ $plaintext = $this->_pad($plaintext);
+ }
+
+ if ($this->engine === self::ENGINE_OPENSSL) {
+ if ($this->changed) {
+ $this->_clearBuffers();
+ $this->changed = false;
+ }
+ switch ($this->mode) {
+ case self::MODE_STREAM:
+ return openssl_encrypt($plaintext, $this->cipher_name_openssl, $this->key, $this->openssl_options);
+ case self::MODE_ECB:
+ $result = @openssl_encrypt($plaintext, $this->cipher_name_openssl, $this->key, $this->openssl_options);
+ return !defined('OPENSSL_RAW_DATA') ? substr($result, 0, -$this->block_size) : $result;
+ case self::MODE_CBC:
+ $result = openssl_encrypt($plaintext, $this->cipher_name_openssl, $this->key, $this->openssl_options, $this->encryptIV);
+ if (!defined('OPENSSL_RAW_DATA')) {
+ $result = substr($result, 0, -$this->block_size);
+ }
+ if ($this->continuousBuffer) {
+ $this->encryptIV = substr($result, -$this->block_size);
+ }
+ return $result;
+ case self::MODE_CTR:
+ return $this->_openssl_ctr_process($plaintext, $this->encryptIV, $this->enbuffer);
+ case self::MODE_CFB:
+ // cfb loosely routines inspired by openssl's:
+ // {@link http://cvs.openssl.org/fileview?f=openssl/crypto/modes/cfb128.c&v=1.3.2.2.2.1}
+ $ciphertext = '';
+ if ($this->continuousBuffer) {
+ $iv = &$this->encryptIV;
+ $pos = &$this->enbuffer['pos'];
+ } else {
+ $iv = $this->encryptIV;
+ $pos = 0;
+ }
+ $len = strlen($plaintext);
+ $i = 0;
+ if ($pos) {
+ $orig_pos = $pos;
+ $max = $this->block_size - $pos;
+ if ($len >= $max) {
+ $i = $max;
+ $len-= $max;
+ $pos = 0;
+ } else {
+ $i = $len;
+ $pos+= $len;
+ $len = 0;
+ }
+ // ie. $i = min($max, $len), $len-= $i, $pos+= $i, $pos%= $blocksize
+ $ciphertext = substr($iv, $orig_pos) ^ $plaintext;
+ $iv = substr_replace($iv, $ciphertext, $orig_pos, $i);
+ $plaintext = substr($plaintext, $i);
+ }
+
+ $overflow = $len % $this->block_size;
+
+ if ($overflow) {
+ $ciphertext.= openssl_encrypt(substr($plaintext, 0, -$overflow) . str_repeat("\0", $this->block_size), $this->cipher_name_openssl, $this->key, $this->openssl_options, $iv);
+ $iv = $this->_string_pop($ciphertext, $this->block_size);
+
+ $size = $len - $overflow;
+ $block = $iv ^ substr($plaintext, -$overflow);
+ $iv = substr_replace($iv, $block, 0, $overflow);
+ $ciphertext.= $block;
+ $pos = $overflow;
+ } elseif ($len) {
+ $ciphertext = openssl_encrypt($plaintext, $this->cipher_name_openssl, $this->key, $this->openssl_options, $iv);
+ $iv = substr($ciphertext, -$this->block_size);
+ }
+
+ return $ciphertext;
+ case self::MODE_CFB8:
+ $ciphertext = openssl_encrypt($plaintext, $this->cipher_name_openssl, $this->key, $this->openssl_options, $this->encryptIV);
+ if ($this->continuousBuffer) {
+ if (($len = strlen($ciphertext)) >= $this->block_size) {
+ $this->encryptIV = substr($ciphertext, -$this->block_size);
+ } else {
+ $this->encryptIV = substr($this->encryptIV, $len - $this->block_size) . substr($ciphertext, -$len);
+ }
+ }
+ return $ciphertext;
+ case self::MODE_OFB:
+ return $this->_openssl_ofb_process($plaintext, $this->encryptIV, $this->enbuffer);
+ }
+ }
+
+ if ($this->engine === self::ENGINE_MCRYPT) {
+ if ($this->changed) {
+ $this->_setupMcrypt();
+ $this->changed = false;
+ }
+ if ($this->enchanged) {
+ @mcrypt_generic_init($this->enmcrypt, $this->key, $this->encryptIV);
+ $this->enchanged = false;
+ }
+
+ // re: {@link http://phpseclib.sourceforge.net/cfb-demo.phps}
+ // using mcrypt's default handing of CFB the above would output two different things. using phpseclib's
+ // rewritten CFB implementation the above outputs the same thing twice.
+ if ($this->mode == self::MODE_CFB && $this->continuousBuffer) {
+ $block_size = $this->block_size;
+ $iv = &$this->encryptIV;
+ $pos = &$this->enbuffer['pos'];
+ $len = strlen($plaintext);
+ $ciphertext = '';
+ $i = 0;
+ if ($pos) {
+ $orig_pos = $pos;
+ $max = $block_size - $pos;
+ if ($len >= $max) {
+ $i = $max;
+ $len-= $max;
+ $pos = 0;
+ } else {
+ $i = $len;
+ $pos+= $len;
+ $len = 0;
+ }
+ $ciphertext = substr($iv, $orig_pos) ^ $plaintext;
+ $iv = substr_replace($iv, $ciphertext, $orig_pos, $i);
+ $this->enbuffer['enmcrypt_init'] = true;
+ }
+ if ($len >= $block_size) {
+ if ($this->enbuffer['enmcrypt_init'] === false || $len > $this->cfb_init_len) {
+ if ($this->enbuffer['enmcrypt_init'] === true) {
+ @mcrypt_generic_init($this->enmcrypt, $this->key, $iv);
+ $this->enbuffer['enmcrypt_init'] = false;
+ }
+ $ciphertext.= @mcrypt_generic($this->enmcrypt, substr($plaintext, $i, $len - $len % $block_size));
+ $iv = substr($ciphertext, -$block_size);
+ $len%= $block_size;
+ } else {
+ while ($len >= $block_size) {
+ $iv = @mcrypt_generic($this->ecb, $iv) ^ substr($plaintext, $i, $block_size);
+ $ciphertext.= $iv;
+ $len-= $block_size;
+ $i+= $block_size;
+ }
+ }
+ }
+
+ if ($len) {
+ $iv = @mcrypt_generic($this->ecb, $iv);
+ $block = $iv ^ substr($plaintext, -$len);
+ $iv = substr_replace($iv, $block, 0, $len);
+ $ciphertext.= $block;
+ $pos = $len;
+ }
+
+ return $ciphertext;
+ }
+
+ $ciphertext = @mcrypt_generic($this->enmcrypt, $plaintext);
+
+ if (!$this->continuousBuffer) {
+ @mcrypt_generic_init($this->enmcrypt, $this->key, $this->encryptIV);
+ }
+
+ return $ciphertext;
+ }
+
+ if ($this->changed) {
+ $this->_setup();
+ $this->changed = false;
+ }
+ if ($this->use_inline_crypt) {
+ $inline = $this->inline_crypt;
+ return $inline('encrypt', $this, $plaintext);
+ }
+
+ $buffer = &$this->enbuffer;
+ $block_size = $this->block_size;
+ $ciphertext = '';
+ switch ($this->mode) {
+ case self::MODE_ECB:
+ for ($i = 0; $i < strlen($plaintext); $i+=$block_size) {
+ $ciphertext.= $this->_encryptBlock(substr($plaintext, $i, $block_size));
+ }
+ break;
+ case self::MODE_CBC:
+ $xor = $this->encryptIV;
+ for ($i = 0; $i < strlen($plaintext); $i+=$block_size) {
+ $block = substr($plaintext, $i, $block_size);
+ $block = $this->_encryptBlock($block ^ $xor);
+ $xor = $block;
+ $ciphertext.= $block;
+ }
+ if ($this->continuousBuffer) {
+ $this->encryptIV = $xor;
+ }
+ break;
+ case self::MODE_CTR:
+ $xor = $this->encryptIV;
+ if (strlen($buffer['ciphertext'])) {
+ for ($i = 0; $i < strlen($plaintext); $i+=$block_size) {
+ $block = substr($plaintext, $i, $block_size);
+ if (strlen($block) > strlen($buffer['ciphertext'])) {
+ $buffer['ciphertext'].= $this->_encryptBlock($xor);
+ }
+ $this->_increment_str($xor);
+ $key = $this->_string_shift($buffer['ciphertext'], $block_size);
+ $ciphertext.= $block ^ $key;
+ }
+ } else {
+ for ($i = 0; $i < strlen($plaintext); $i+=$block_size) {
+ $block = substr($plaintext, $i, $block_size);
+ $key = $this->_encryptBlock($xor);
+ $this->_increment_str($xor);
+ $ciphertext.= $block ^ $key;
+ }
+ }
+ if ($this->continuousBuffer) {
+ $this->encryptIV = $xor;
+ if ($start = strlen($plaintext) % $block_size) {
+ $buffer['ciphertext'] = substr($key, $start) . $buffer['ciphertext'];
+ }
+ }
+ break;
+ case self::MODE_CFB:
+ // cfb loosely routines inspired by openssl's:
+ // {@link http://cvs.openssl.org/fileview?f=openssl/crypto/modes/cfb128.c&v=1.3.2.2.2.1}
+ if ($this->continuousBuffer) {
+ $iv = &$this->encryptIV;
+ $pos = &$buffer['pos'];
+ } else {
+ $iv = $this->encryptIV;
+ $pos = 0;
+ }
+ $len = strlen($plaintext);
+ $i = 0;
+ if ($pos) {
+ $orig_pos = $pos;
+ $max = $block_size - $pos;
+ if ($len >= $max) {
+ $i = $max;
+ $len-= $max;
+ $pos = 0;
+ } else {
+ $i = $len;
+ $pos+= $len;
+ $len = 0;
+ }
+ // ie. $i = min($max, $len), $len-= $i, $pos+= $i, $pos%= $blocksize
+ $ciphertext = substr($iv, $orig_pos) ^ $plaintext;
+ $iv = substr_replace($iv, $ciphertext, $orig_pos, $i);
+ }
+ while ($len >= $block_size) {
+ $iv = $this->_encryptBlock($iv) ^ substr($plaintext, $i, $block_size);
+ $ciphertext.= $iv;
+ $len-= $block_size;
+ $i+= $block_size;
+ }
+ if ($len) {
+ $iv = $this->_encryptBlock($iv);
+ $block = $iv ^ substr($plaintext, $i);
+ $iv = substr_replace($iv, $block, 0, $len);
+ $ciphertext.= $block;
+ $pos = $len;
+ }
+ break;
+ case self::MODE_CFB8:
+ $ciphertext = '';
+ $len = strlen($plaintext);
+ $iv = $this->encryptIV;
+
+ for ($i = 0; $i < $len; ++$i) {
+ $ciphertext .= ($c = $plaintext[$i] ^ $this->_encryptBlock($iv));
+ $iv = substr($iv, 1) . $c;
+ }
+
+ if ($this->continuousBuffer) {
+ if ($len >= $block_size) {
+ $this->encryptIV = substr($ciphertext, -$block_size);
+ } else {
+ $this->encryptIV = substr($this->encryptIV, $len - $block_size) . substr($ciphertext, -$len);
+ }
+ }
+ break;
+ case self::MODE_OFB:
+ $xor = $this->encryptIV;
+ if (strlen($buffer['xor'])) {
+ for ($i = 0; $i < strlen($plaintext); $i+=$block_size) {
+ $block = substr($plaintext, $i, $block_size);
+ if (strlen($block) > strlen($buffer['xor'])) {
+ $xor = $this->_encryptBlock($xor);
+ $buffer['xor'].= $xor;
+ }
+ $key = $this->_string_shift($buffer['xor'], $block_size);
+ $ciphertext.= $block ^ $key;
+ }
+ } else {
+ for ($i = 0; $i < strlen($plaintext); $i+=$block_size) {
+ $xor = $this->_encryptBlock($xor);
+ $ciphertext.= substr($plaintext, $i, $block_size) ^ $xor;
+ }
+ $key = $xor;
+ }
+ if ($this->continuousBuffer) {
+ $this->encryptIV = $xor;
+ if ($start = strlen($plaintext) % $block_size) {
+ $buffer['xor'] = substr($key, $start) . $buffer['xor'];
+ }
+ }
+ break;
+ case self::MODE_STREAM:
+ $ciphertext = $this->_encryptBlock($plaintext);
+ break;
+ }
+
+ return $ciphertext;
+ }
+
+ /**
+ * Decrypts a message.
+ *
+ * If strlen($ciphertext) is not a multiple of the block size, null bytes will be added to the end of the string until
+ * it is.
+ *
+ * @see self::encrypt()
+ * @access public
+ * @param string $ciphertext
+ * @return string $plaintext
+ * @internal Could, but not must, extend by the child Crypt_* class
+ */
+ function decrypt($ciphertext)
+ {
+ if ($this->paddable) {
+ // we pad with chr(0) since that's what mcrypt_generic does. to quote from {@link http://www.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($ciphertext) + ($this->block_size - strlen($ciphertext) % $this->block_size) % $this->block_size, chr(0));
+ }
+
+ if ($this->engine === self::ENGINE_OPENSSL) {
+ if ($this->changed) {
+ $this->_clearBuffers();
+ $this->changed = false;
+ }
+ switch ($this->mode) {
+ case self::MODE_STREAM:
+ $plaintext = openssl_decrypt($ciphertext, $this->cipher_name_openssl, $this->key, $this->openssl_options);
+ break;
+ case self::MODE_ECB:
+ if (!defined('OPENSSL_RAW_DATA')) {
+ $ciphertext.= @openssl_encrypt('', $this->cipher_name_openssl_ecb, $this->key, true);
+ }
+ $plaintext = openssl_decrypt($ciphertext, $this->cipher_name_openssl, $this->key, $this->openssl_options);
+ break;
+ case self::MODE_CBC:
+ if (!defined('OPENSSL_RAW_DATA')) {
+ $padding = str_repeat(chr($this->block_size), $this->block_size) ^ substr($ciphertext, -$this->block_size);
+ $ciphertext.= substr(@openssl_encrypt($padding, $this->cipher_name_openssl_ecb, $this->key, true), 0, $this->block_size);
+ $offset = 2 * $this->block_size;
+ } else {
+ $offset = $this->block_size;
+ }
+ $plaintext = openssl_decrypt($ciphertext, $this->cipher_name_openssl, $this->key, $this->openssl_options, $this->decryptIV);
+ if ($this->continuousBuffer) {
+ $this->decryptIV = substr($ciphertext, -$offset, $this->block_size);
+ }
+ break;
+ case self::MODE_CTR:
+ $plaintext = $this->_openssl_ctr_process($ciphertext, $this->decryptIV, $this->debuffer);
+ break;
+ case self::MODE_CFB:
+ // cfb loosely routines inspired by openssl's:
+ // {@link http://cvs.openssl.org/fileview?f=openssl/crypto/modes/cfb128.c&v=1.3.2.2.2.1}
+ $plaintext = '';
+ if ($this->continuousBuffer) {
+ $iv = &$this->decryptIV;
+ $pos = &$this->buffer['pos'];
+ } else {
+ $iv = $this->decryptIV;
+ $pos = 0;
+ }
+ $len = strlen($ciphertext);
+ $i = 0;
+ if ($pos) {
+ $orig_pos = $pos;
+ $max = $this->block_size - $pos;
+ if ($len >= $max) {
+ $i = $max;
+ $len-= $max;
+ $pos = 0;
+ } else {
+ $i = $len;
+ $pos+= $len;
+ $len = 0;
+ }
+ // ie. $i = min($max, $len), $len-= $i, $pos+= $i, $pos%= $this->blocksize
+ $plaintext = substr($iv, $orig_pos) ^ $ciphertext;
+ $iv = substr_replace($iv, substr($ciphertext, 0, $i), $orig_pos, $i);
+ $ciphertext = substr($ciphertext, $i);
+ }
+ $overflow = $len % $this->block_size;
+ if ($overflow) {
+ $plaintext.= openssl_decrypt(substr($ciphertext, 0, -$overflow), $this->cipher_name_openssl, $this->key, $this->openssl_options, $iv);
+ if ($len - $overflow) {
+ $iv = substr($ciphertext, -$overflow - $this->block_size, -$overflow);
+ }
+ $iv = openssl_encrypt(str_repeat("\0", $this->block_size), $this->cipher_name_openssl, $this->key, $this->openssl_options, $iv);
+ $plaintext.= $iv ^ substr($ciphertext, -$overflow);
+ $iv = substr_replace($iv, substr($ciphertext, -$overflow), 0, $overflow);
+ $pos = $overflow;
+ } elseif ($len) {
+ $plaintext.= openssl_decrypt($ciphertext, $this->cipher_name_openssl, $this->key, $this->openssl_options, $iv);
+ $iv = substr($ciphertext, -$this->block_size);
+ }
+ break;
+ case self::MODE_CFB8:
+ $plaintext = openssl_decrypt($ciphertext, $this->cipher_name_openssl, $this->key, $this->openssl_options, $this->decryptIV);
+ if ($this->continuousBuffer) {
+ if (($len = strlen($ciphertext)) >= $this->block_size) {
+ $this->decryptIV = substr($ciphertext, -$this->block_size);
+ } else {
+ $this->decryptIV = substr($this->decryptIV, $len - $this->block_size) . substr($ciphertext, -$len);
+ }
+ }
+ break;
+ case self::MODE_OFB:
+ $plaintext = $this->_openssl_ofb_process($ciphertext, $this->decryptIV, $this->debuffer);
+ }
+
+ return $this->paddable ? $this->_unpad($plaintext) : $plaintext;
+ }
+
+ if ($this->engine === self::ENGINE_MCRYPT) {
+ $block_size = $this->block_size;
+ if ($this->changed) {
+ $this->_setupMcrypt();
+ $this->changed = false;
+ }
+ if ($this->dechanged) {
+ @mcrypt_generic_init($this->demcrypt, $this->key, $this->decryptIV);
+ $this->dechanged = false;
+ }
+
+ if ($this->mode == self::MODE_CFB && $this->continuousBuffer) {
+ $iv = &$this->decryptIV;
+ $pos = &$this->debuffer['pos'];
+ $len = strlen($ciphertext);
+ $plaintext = '';
+ $i = 0;
+ if ($pos) {
+ $orig_pos = $pos;
+ $max = $block_size - $pos;
+ if ($len >= $max) {
+ $i = $max;
+ $len-= $max;
+ $pos = 0;
+ } else {
+ $i = $len;
+ $pos+= $len;
+ $len = 0;
+ }
+ // ie. $i = min($max, $len), $len-= $i, $pos+= $i, $pos%= $blocksize
+ $plaintext = substr($iv, $orig_pos) ^ $ciphertext;
+ $iv = substr_replace($iv, substr($ciphertext, 0, $i), $orig_pos, $i);
+ }
+ if ($len >= $block_size) {
+ $cb = substr($ciphertext, $i, $len - $len % $block_size);
+ $plaintext.= @mcrypt_generic($this->ecb, $iv . $cb) ^ $cb;
+ $iv = substr($cb, -$block_size);
+ $len%= $block_size;
+ }
+ if ($len) {
+ $iv = @mcrypt_generic($this->ecb, $iv);
+ $plaintext.= $iv ^ substr($ciphertext, -$len);
+ $iv = substr_replace($iv, substr($ciphertext, -$len), 0, $len);
+ $pos = $len;
+ }
+
+ return $plaintext;
+ }
+
+ $plaintext = @mdecrypt_generic($this->demcrypt, $ciphertext);
+
+ if (!$this->continuousBuffer) {
+ @mcrypt_generic_init($this->demcrypt, $this->key, $this->decryptIV);
+ }
+
+ return $this->paddable ? $this->_unpad($plaintext) : $plaintext;
+ }
+
+ if ($this->changed) {
+ $this->_setup();
+ $this->changed = false;
+ }
+ if ($this->use_inline_crypt) {
+ $inline = $this->inline_crypt;
+ return $inline('decrypt', $this, $ciphertext);
+ }
+
+ $block_size = $this->block_size;
+
+ $buffer = &$this->debuffer;
+ $plaintext = '';
+ switch ($this->mode) {
+ case self::MODE_ECB:
+ for ($i = 0; $i < strlen($ciphertext); $i+=$block_size) {
+ $plaintext.= $this->_decryptBlock(substr($ciphertext, $i, $block_size));
+ }
+ break;
+ case self::MODE_CBC:
+ $xor = $this->decryptIV;
+ for ($i = 0; $i < strlen($ciphertext); $i+=$block_size) {
+ $block = substr($ciphertext, $i, $block_size);
+ $plaintext.= $this->_decryptBlock($block) ^ $xor;
+ $xor = $block;
+ }
+ if ($this->continuousBuffer) {
+ $this->decryptIV = $xor;
+ }
+ break;
+ case self::MODE_CTR:
+ $xor = $this->decryptIV;
+ if (strlen($buffer['ciphertext'])) {
+ for ($i = 0; $i < strlen($ciphertext); $i+=$block_size) {
+ $block = substr($ciphertext, $i, $block_size);
+ if (strlen($block) > strlen($buffer['ciphertext'])) {
+ $buffer['ciphertext'].= $this->_encryptBlock($xor);
+ $this->_increment_str($xor);
+ }
+ $key = $this->_string_shift($buffer['ciphertext'], $block_size);
+ $plaintext.= $block ^ $key;
+ }
+ } else {
+ for ($i = 0; $i < strlen($ciphertext); $i+=$block_size) {
+ $block = substr($ciphertext, $i, $block_size);
+ $key = $this->_encryptBlock($xor);
+ $this->_increment_str($xor);
+ $plaintext.= $block ^ $key;
+ }
+ }
+ if ($this->continuousBuffer) {
+ $this->decryptIV = $xor;
+ if ($start = strlen($ciphertext) % $block_size) {
+ $buffer['ciphertext'] = substr($key, $start) . $buffer['ciphertext'];
+ }
+ }
+ break;
+ case self::MODE_CFB:
+ if ($this->continuousBuffer) {
+ $iv = &$this->decryptIV;
+ $pos = &$buffer['pos'];
+ } else {
+ $iv = $this->decryptIV;
+ $pos = 0;
+ }
+ $len = strlen($ciphertext);
+ $i = 0;
+ if ($pos) {
+ $orig_pos = $pos;
+ $max = $block_size - $pos;
+ if ($len >= $max) {
+ $i = $max;
+ $len-= $max;
+ $pos = 0;
+ } else {
+ $i = $len;
+ $pos+= $len;
+ $len = 0;
+ }
+ // ie. $i = min($max, $len), $len-= $i, $pos+= $i, $pos%= $blocksize
+ $plaintext = substr($iv, $orig_pos) ^ $ciphertext;
+ $iv = substr_replace($iv, substr($ciphertext, 0, $i), $orig_pos, $i);
+ }
+ while ($len >= $block_size) {
+ $iv = $this->_encryptBlock($iv);
+ $cb = substr($ciphertext, $i, $block_size);
+ $plaintext.= $iv ^ $cb;
+ $iv = $cb;
+ $len-= $block_size;
+ $i+= $block_size;
+ }
+ if ($len) {
+ $iv = $this->_encryptBlock($iv);
+ $plaintext.= $iv ^ substr($ciphertext, $i);
+ $iv = substr_replace($iv, substr($ciphertext, $i), 0, $len);
+ $pos = $len;
+ }
+ break;
+ case self::MODE_CFB8:
+ $plaintext = '';
+ $len = strlen($ciphertext);
+ $iv = $this->decryptIV;
+
+ for ($i = 0; $i < $len; ++$i) {
+ $plaintext .= $ciphertext[$i] ^ $this->_encryptBlock($iv);
+ $iv = substr($iv, 1) . $ciphertext[$i];
+ }
+
+ if ($this->continuousBuffer) {
+ if ($len >= $block_size) {
+ $this->decryptIV = substr($ciphertext, -$block_size);
+ } else {
+ $this->decryptIV = substr($this->decryptIV, $len - $block_size) . substr($ciphertext, -$len);
+ }
+ }
+ break;
+ case self::MODE_OFB:
+ $xor = $this->decryptIV;
+ if (strlen($buffer['xor'])) {
+ for ($i = 0; $i < strlen($ciphertext); $i+=$block_size) {
+ $block = substr($ciphertext, $i, $block_size);
+ if (strlen($block) > strlen($buffer['xor'])) {
+ $xor = $this->_encryptBlock($xor);
+ $buffer['xor'].= $xor;
+ }
+ $key = $this->_string_shift($buffer['xor'], $block_size);
+ $plaintext.= $block ^ $key;
+ }
+ } else {
+ for ($i = 0; $i < strlen($ciphertext); $i+=$block_size) {
+ $xor = $this->_encryptBlock($xor);
+ $plaintext.= substr($ciphertext, $i, $block_size) ^ $xor;
+ }
+ $key = $xor;
+ }
+ if ($this->continuousBuffer) {
+ $this->decryptIV = $xor;
+ if ($start = strlen($ciphertext) % $block_size) {
+ $buffer['xor'] = substr($key, $start) . $buffer['xor'];
+ }
+ }
+ break;
+ case self::MODE_STREAM:
+ $plaintext = $this->_decryptBlock($ciphertext);
+ break;
+ }
+ return $this->paddable ? $this->_unpad($plaintext) : $plaintext;
+ }
+
+ /**
+ * OpenSSL CTR Processor
+ *
+ * PHP's OpenSSL bindings do not operate in continuous mode so we'll wrap around it. Since the keystream
+ * for CTR is the same for both encrypting and decrypting this function is re-used by both Base::encrypt()
+ * and Base::decrypt(). Also, OpenSSL doesn't implement CTR for all of it's symmetric ciphers so this
+ * function will emulate CTR with ECB when necessary.
+ *
+ * @see self::encrypt()
+ * @see self::decrypt()
+ * @param string $plaintext
+ * @param string $encryptIV
+ * @param array $buffer
+ * @return string
+ * @access private
+ */
+ function _openssl_ctr_process($plaintext, &$encryptIV, &$buffer)
+ {
+ $ciphertext = '';
+
+ $block_size = $this->block_size;
+ $key = $this->key;
+
+ if ($this->openssl_emulate_ctr) {
+ $xor = $encryptIV;
+ if (strlen($buffer['ciphertext'])) {
+ for ($i = 0; $i < strlen($plaintext); $i+=$block_size) {
+ $block = substr($plaintext, $i, $block_size);
+ if (strlen($block) > strlen($buffer['ciphertext'])) {
+ $result = @openssl_encrypt($xor, $this->cipher_name_openssl_ecb, $key, $this->openssl_options);
+ $result = !defined('OPENSSL_RAW_DATA') ? substr($result, 0, -$this->block_size) : $result;
+ $buffer['ciphertext'].= $result;
+ }
+ $this->_increment_str($xor);
+ $otp = $this->_string_shift($buffer['ciphertext'], $block_size);
+ $ciphertext.= $block ^ $otp;
+ }
+ } else {
+ for ($i = 0; $i < strlen($plaintext); $i+=$block_size) {
+ $block = substr($plaintext, $i, $block_size);
+ $otp = @openssl_encrypt($xor, $this->cipher_name_openssl_ecb, $key, $this->openssl_options);
+ $otp = !defined('OPENSSL_RAW_DATA') ? substr($otp, 0, -$this->block_size) : $otp;
+ $this->_increment_str($xor);
+ $ciphertext.= $block ^ $otp;
+ }
+ }
+ if ($this->continuousBuffer) {
+ $encryptIV = $xor;
+ if ($start = strlen($plaintext) % $block_size) {
+ $buffer['ciphertext'] = substr($key, $start) . $buffer['ciphertext'];
+ }
+ }
+
+ return $ciphertext;
+ }
+
+ if (strlen($buffer['ciphertext'])) {
+ $ciphertext = $plaintext ^ $this->_string_shift($buffer['ciphertext'], strlen($plaintext));
+ $plaintext = substr($plaintext, strlen($ciphertext));
+
+ if (!strlen($plaintext)) {
+ return $ciphertext;
+ }
+ }
+
+ $overflow = strlen($plaintext) % $block_size;
+ if ($overflow) {
+ $plaintext2 = $this->_string_pop($plaintext, $overflow); // ie. trim $plaintext to a multiple of $block_size and put rest of $plaintext in $plaintext2
+ $encrypted = openssl_encrypt($plaintext . str_repeat("\0", $block_size), $this->cipher_name_openssl, $key, $this->openssl_options, $encryptIV);
+ $temp = $this->_string_pop($encrypted, $block_size);
+ $ciphertext.= $encrypted . ($plaintext2 ^ $temp);
+ if ($this->continuousBuffer) {
+ $buffer['ciphertext'] = substr($temp, $overflow);
+ $encryptIV = $temp;
+ }
+ } elseif (!strlen($buffer['ciphertext'])) {
+ $ciphertext.= openssl_encrypt($plaintext . str_repeat("\0", $block_size), $this->cipher_name_openssl, $key, $this->openssl_options, $encryptIV);
+ $temp = $this->_string_pop($ciphertext, $block_size);
+ if ($this->continuousBuffer) {
+ $encryptIV = $temp;
+ }
+ }
+ if ($this->continuousBuffer) {
+ if (!defined('OPENSSL_RAW_DATA')) {
+ $encryptIV.= @openssl_encrypt('', $this->cipher_name_openssl_ecb, $key, $this->openssl_options);
+ }
+ $encryptIV = openssl_decrypt($encryptIV, $this->cipher_name_openssl_ecb, $key, $this->openssl_options);
+ if ($overflow) {
+ $this->_increment_str($encryptIV);
+ }
+ }
+
+ return $ciphertext;
+ }
+
+ /**
+ * OpenSSL OFB Processor
+ *
+ * PHP's OpenSSL bindings do not operate in continuous mode so we'll wrap around it. Since the keystream
+ * for OFB is the same for both encrypting and decrypting this function is re-used by both Base::encrypt()
+ * and Base::decrypt().
+ *
+ * @see self::encrypt()
+ * @see self::decrypt()
+ * @param string $plaintext
+ * @param string $encryptIV
+ * @param array $buffer
+ * @return string
+ * @access private
+ */
+ function _openssl_ofb_process($plaintext, &$encryptIV, &$buffer)
+ {
+ if (strlen($buffer['xor'])) {
+ $ciphertext = $plaintext ^ $buffer['xor'];
+ $buffer['xor'] = substr($buffer['xor'], strlen($ciphertext));
+ $plaintext = substr($plaintext, strlen($ciphertext));
+ } else {
+ $ciphertext = '';
+ }
+
+ $block_size = $this->block_size;
+
+ $len = strlen($plaintext);
+ $key = $this->key;
+ $overflow = $len % $block_size;
+
+ if (strlen($plaintext)) {
+ if ($overflow) {
+ $ciphertext.= openssl_encrypt(substr($plaintext, 0, -$overflow) . str_repeat("\0", $block_size), $this->cipher_name_openssl, $key, $this->openssl_options, $encryptIV);
+ $xor = $this->_string_pop($ciphertext, $block_size);
+ if ($this->continuousBuffer) {
+ $encryptIV = $xor;
+ }
+ $ciphertext.= $this->_string_shift($xor, $overflow) ^ substr($plaintext, -$overflow);
+ if ($this->continuousBuffer) {
+ $buffer['xor'] = $xor;
+ }
+ } else {
+ $ciphertext = openssl_encrypt($plaintext, $this->cipher_name_openssl, $key, $this->openssl_options, $encryptIV);
+ if ($this->continuousBuffer) {
+ $encryptIV = substr($ciphertext, -$block_size) ^ substr($plaintext, -$block_size);
+ }
+ }
+ }
+
+ return $ciphertext;
+ }
+
+ /**
+ * phpseclib <-> OpenSSL Mode Mapper
+ *
+ * May need to be overwritten by classes extending this one in some cases
+ *
+ * @return int
+ * @access private
+ */
+ function _openssl_translate_mode()
+ {
+ switch ($this->mode) {
+ case self::MODE_ECB:
+ return 'ecb';
+ case self::MODE_CBC:
+ return 'cbc';
+ case self::MODE_CTR:
+ return 'ctr';
+ case self::MODE_CFB:
+ return 'cfb';
+ case self::MODE_CFB8:
+ return 'cfb8';
+ case self::MODE_OFB:
+ return 'ofb';
+ }
+ }
+
+ /**
+ * Pad "packets".
+ *
+ * Block ciphers working by encrypting between their specified [$this->]block_size at a time
+ * If you ever need to encrypt or decrypt something that isn't of the proper length, it becomes necessary to
+ * pad the input so that it is of the proper length.
+ *
+ * Padding is enabled by default. Sometimes, however, it is undesirable to pad strings. Such is the case in SSH,
+ * 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 self::disablePadding()
+ * @access public
+ */
+ function enablePadding()
+ {
+ $this->padding = true;
+ }
+
+ /**
+ * Do not pad packets.
+ *
+ * @see self::enablePadding()
+ * @access public
+ */
+ function disablePadding()
+ {
+ $this->padding = false;
+ }
+
+ /**
+ * Treat consecutive "packets" as if they are a continuous buffer.
+ *
+ * Say you have a 32-byte plaintext $plaintext. Using the default behavior, the two following code snippets
+ * will yield different outputs:
+ *
+ * <code>
+ * echo $rijndael->encrypt(substr($plaintext, 0, 16));
+ * echo $rijndael->encrypt(substr($plaintext, 16, 16));
+ * </code>
+ * <code>
+ * echo $rijndael->encrypt($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>
+ * $rijndael->encrypt(substr($plaintext, 0, 16));
+ * echo $rijndael->decrypt($rijndael->encrypt(substr($plaintext, 16, 16)));
+ * </code>
+ * <code>
+ * echo $rijndael->decrypt($rijndael->encrypt(substr($plaintext, 16, 16)));
+ * </code>
+ *
+ * With the continuous buffer disabled, these would yield the same output. With it enabled, they yield different
+ * outputs. The reason is due to the fact that the initialization vector's change after every encryption /
+ * decryption round when the continuous buffer is enabled. When it's disabled, they remain constant.
+ *
+ * Put another way, when the continuous buffer is enabled, the state of the \phpseclib\Crypt\*() object changes after each
+ * encryption / decryption round, whereas otherwise, it'd remain constant. For this reason, it's recommended that
+ * continuous buffers not be used. They do offer better security and are, in fact, sometimes required (SSH uses them),
+ * however, they are also less intuitive and more likely to cause you problems.
+ *
+ * @see self::disableContinuousBuffer()
+ * @access public
+ * @internal Could, but not must, extend by the child Crypt_* class
+ */
+ function enableContinuousBuffer()
+ {
+ if ($this->mode == self::MODE_ECB) {
+ return;
+ }
+
+ $this->continuousBuffer = true;
+
+ $this->_setEngine();
+ }
+
+ /**
+ * Treat consecutive packets as if they are a discontinuous buffer.
+ *
+ * The default behavior.
+ *
+ * @see self::enableContinuousBuffer()
+ * @access public
+ * @internal Could, but not must, extend by the child Crypt_* class
+ */
+ function disableContinuousBuffer()
+ {
+ if ($this->mode == self::MODE_ECB) {
+ return;
+ }
+ if (!$this->continuousBuffer) {
+ return;
+ }
+
+ $this->continuousBuffer = false;
+ $this->changed = true;
+
+ $this->_setEngine();
+ }
+
+ /**
+ * Test for engine validity
+ *
+ * @see self::__construct()
+ * @param int $engine
+ * @access public
+ * @return bool
+ */
+ function isValidEngine($engine)
+ {
+ switch ($engine) {
+ case self::ENGINE_OPENSSL:
+ if ($this->mode == self::MODE_STREAM && $this->continuousBuffer) {
+ return false;
+ }
+ $this->openssl_emulate_ctr = false;
+ $result = $this->cipher_name_openssl &&
+ extension_loaded('openssl') &&
+ // PHP 5.3.0 - 5.3.2 did not let you set IV's
+ version_compare(PHP_VERSION, '5.3.3', '>=');
+ if (!$result) {
+ return false;
+ }
+
+ // prior to PHP 5.4.0 OPENSSL_RAW_DATA and OPENSSL_ZERO_PADDING were not defined. instead of expecting an integer
+ // $options openssl_encrypt expected a boolean $raw_data.
+ if (!defined('OPENSSL_RAW_DATA')) {
+ $this->openssl_options = true;
+ } else {
+ $this->openssl_options = OPENSSL_RAW_DATA | OPENSSL_ZERO_PADDING;
+ }
+
+ $methods = openssl_get_cipher_methods();
+ if (in_array($this->cipher_name_openssl, $methods)) {
+ return true;
+ }
+ // not all of openssl's symmetric cipher's support ctr. for those
+ // that don't we'll emulate it
+ switch ($this->mode) {
+ case self::MODE_CTR:
+ if (in_array($this->cipher_name_openssl_ecb, $methods)) {
+ $this->openssl_emulate_ctr = true;
+ return true;
+ }
+ }
+ return false;
+ case self::ENGINE_MCRYPT:
+ return $this->cipher_name_mcrypt &&
+ extension_loaded('mcrypt') &&
+ in_array($this->cipher_name_mcrypt, @mcrypt_list_algorithms());
+ case self::ENGINE_INTERNAL:
+ return true;
+ }
+
+ return false;
+ }
+
+ /**
+ * Sets the preferred crypt engine
+ *
+ * Currently, $engine could be:
+ *
+ * - \phpseclib\Crypt\Base::ENGINE_OPENSSL [very fast]
+ *
+ * - \phpseclib\Crypt\Base::ENGINE_MCRYPT [fast]
+ *
+ * - \phpseclib\Crypt\Base::ENGINE_INTERNAL [slow]
+ *
+ * If the preferred crypt engine is not available the fastest available one will be used
+ *
+ * @see self::__construct()
+ * @param int $engine
+ * @access public
+ */
+ function setPreferredEngine($engine)
+ {
+ switch ($engine) {
+ //case self::ENGINE_OPENSSL;
+ case self::ENGINE_MCRYPT:
+ case self::ENGINE_INTERNAL:
+ $this->preferredEngine = $engine;
+ break;
+ default:
+ $this->preferredEngine = self::ENGINE_OPENSSL;
+ }
+
+ $this->_setEngine();
+ }
+
+ /**
+ * Returns the engine currently being utilized
+ *
+ * @see self::_setEngine()
+ * @access public
+ */
+ function getEngine()
+ {
+ return $this->engine;
+ }
+
+ /**
+ * Sets the engine as appropriate
+ *
+ * @see self::__construct()
+ * @access private
+ */
+ function _setEngine()
+ {
+ $this->engine = null;
+
+ $candidateEngines = array(
+ $this->preferredEngine,
+ self::ENGINE_OPENSSL,
+ self::ENGINE_MCRYPT
+ );
+ foreach ($candidateEngines as $engine) {
+ if ($this->isValidEngine($engine)) {
+ $this->engine = $engine;
+ break;
+ }
+ }
+ if (!$this->engine) {
+ $this->engine = self::ENGINE_INTERNAL;
+ }
+
+ if ($this->engine != self::ENGINE_MCRYPT && $this->enmcrypt) {
+ // Closing the current mcrypt resource(s). _mcryptSetup() will, if needed,
+ // (re)open them with the module named in $this->cipher_name_mcrypt
+ @mcrypt_module_close($this->enmcrypt);
+ @mcrypt_module_close($this->demcrypt);
+ $this->enmcrypt = null;
+ $this->demcrypt = null;
+
+ if ($this->ecb) {
+ @mcrypt_module_close($this->ecb);
+ $this->ecb = null;
+ }
+ }
+
+ $this->changed = true;
+ }
+
+ /**
+ * Encrypts a block
+ *
+ * Note: Must be extended by the child \phpseclib\Crypt\* class
+ *
+ * @access private
+ * @param string $in
+ * @return string
+ */
+ abstract function _encryptBlock($in);
+
+ /**
+ * Decrypts a block
+ *
+ * Note: Must be extended by the child \phpseclib\Crypt\* class
+ *
+ * @access private
+ * @param string $in
+ * @return string
+ */
+ abstract function _decryptBlock($in);
+
+ /**
+ * Setup the key (expansion)
+ *
+ * Only used if $engine == self::ENGINE_INTERNAL
+ *
+ * Note: Must extend by the child \phpseclib\Crypt\* class
+ *
+ * @see self::_setup()
+ * @access private
+ */
+ abstract function _setupKey();
+
+ /**
+ * Setup the self::ENGINE_INTERNAL $engine
+ *
+ * (re)init, if necessary, the internal cipher $engine and flush all $buffers
+ * Used (only) if $engine == self::ENGINE_INTERNAL
+ *
+ * _setup() will be called each time if $changed === true
+ * typically this happens when using one or more of following public methods:
+ *
+ * - setKey()
+ *
+ * - setIV()
+ *
+ * - disableContinuousBuffer()
+ *
+ * - First run of encrypt() / decrypt() with no init-settings
+ *
+ * @see self::setKey()
+ * @see self::setIV()
+ * @see self::disableContinuousBuffer()
+ * @access private
+ * @internal _setup() is always called before en/decryption.
+ * @internal Could, but not must, extend by the child Crypt_* class
+ */
+ function _setup()
+ {
+ $this->_clearBuffers();
+ $this->_setupKey();
+
+ if ($this->use_inline_crypt) {
+ $this->_setupInlineCrypt();
+ }
+ }
+
+ /**
+ * Setup the self::ENGINE_MCRYPT $engine
+ *
+ * (re)init, if necessary, the (ext)mcrypt resources and flush all $buffers
+ * Used (only) if $engine = self::ENGINE_MCRYPT
+ *
+ * _setupMcrypt() will be called each time if $changed === true
+ * typically this happens when using one or more of following public methods:
+ *
+ * - setKey()
+ *
+ * - setIV()
+ *
+ * - disableContinuousBuffer()
+ *
+ * - First run of encrypt() / decrypt()
+ *
+ * @see self::setKey()
+ * @see self::setIV()
+ * @see self::disableContinuousBuffer()
+ * @access private
+ * @internal Could, but not must, extend by the child Crypt_* class
+ */
+ function _setupMcrypt()
+ {
+ $this->_clearBuffers();
+ $this->enchanged = $this->dechanged = true;
+
+ if (!isset($this->enmcrypt)) {
+ static $mcrypt_modes = array(
+ self::MODE_CTR => 'ctr',
+ self::MODE_ECB => MCRYPT_MODE_ECB,
+ self::MODE_CBC => MCRYPT_MODE_CBC,
+ self::MODE_CFB => 'ncfb',
+ self::MODE_CFB8 => MCRYPT_MODE_CFB,
+ self::MODE_OFB => MCRYPT_MODE_NOFB,
+ self::MODE_STREAM => MCRYPT_MODE_STREAM,
+ );
+
+ $this->demcrypt = @mcrypt_module_open($this->cipher_name_mcrypt, '', $mcrypt_modes[$this->mode], '');
+ $this->enmcrypt = @mcrypt_module_open($this->cipher_name_mcrypt, '', $mcrypt_modes[$this->mode], '');
+
+ // we need the $ecb mcrypt resource (only) in MODE_CFB with enableContinuousBuffer()
+ // to workaround mcrypt's broken ncfb implementation in buffered mode
+ // see: {@link http://phpseclib.sourceforge.net/cfb-demo.phps}
+ if ($this->mode == self::MODE_CFB) {
+ $this->ecb = @mcrypt_module_open($this->cipher_name_mcrypt, '', MCRYPT_MODE_ECB, '');
+ }
+ } // else should mcrypt_generic_deinit be called?
+
+ if ($this->mode == self::MODE_CFB) {
+ @mcrypt_generic_init($this->ecb, $this->key, str_repeat("\0", $this->block_size));
+ }
+ }
+
+ /**
+ * Pads a string
+ *
+ * Pads a string using the RSA PKCS padding standards so that its length is a multiple of the blocksize.
+ * $this->block_size - (strlen($text) % $this->block_size) bytes are added, each of which is equal to
+ * chr($this->block_size - (strlen($text) % $this->block_size)
+ *
+ * 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 self::_unpad()
+ * @param string $text
+ * @access private
+ * @return string
+ */
+ function _pad($text)
+ {
+ $length = strlen($text);
+
+ if (!$this->padding) {
+ if ($length % $this->block_size == 0) {
+ return $text;
+ } else {
+ user_error("The plaintext's length ($length) is not a multiple of the block size ({$this->block_size})");
+ $this->padding = true;
+ }
+ }
+
+ $pad = $this->block_size - ($length % $this->block_size);
+
+ return str_pad($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 self::_pad()
+ * @param string $text
+ * @access private
+ * @return string
+ */
+ function _unpad($text)
+ {
+ if (!$this->padding) {
+ return $text;
+ }
+
+ $length = ord($text[strlen($text) - 1]);
+
+ if (!$length || $length > $this->block_size) {
+ return false;
+ }
+
+ return substr($text, 0, -$length);
+ }
+
+ /**
+ * Clears internal buffers
+ *
+ * Clearing/resetting the internal buffers is done everytime
+ * after disableContinuousBuffer() or on cipher $engine (re)init
+ * ie after setKey() or setIV()
+ *
+ * @access public
+ * @internal Could, but not must, extend by the child Crypt_* class
+ */
+ function _clearBuffers()
+ {
+ $this->enbuffer = $this->debuffer = array('ciphertext' => '', 'xor' => '', 'pos' => 0, 'enmcrypt_init' => true);
+
+ // mcrypt's handling of invalid's $iv:
+ // $this->encryptIV = $this->decryptIV = strlen($this->iv) == $this->block_size ? $this->iv : str_repeat("\0", $this->block_size);
+ $this->encryptIV = $this->decryptIV = str_pad(substr($this->iv, 0, $this->block_size), $this->block_size, "\0");
+
+ if (!$this->skip_key_adjustment) {
+ $this->key = str_pad(substr($this->key, 0, $this->key_length), $this->key_length, "\0");
+ }
+ }
+
+ /**
+ * String Shift
+ *
+ * Inspired by array_shift
+ *
+ * @param string $string
+ * @param int $index
+ * @access private
+ * @return string
+ */
+ function _string_shift(&$string, $index = 1)
+ {
+ $substr = substr($string, 0, $index);
+ $string = substr($string, $index);
+ return $substr;
+ }
+
+ /**
+ * String Pop
+ *
+ * Inspired by array_pop
+ *
+ * @param string $string
+ * @param int $index
+ * @access private
+ * @return string
+ */
+ function _string_pop(&$string, $index = 1)
+ {
+ $substr = substr($string, -$index);
+ $string = substr($string, 0, -$index);
+ return $substr;
+ }
+
+ /**
+ * Increment the current string
+ *
+ * @see self::decrypt()
+ * @see self::encrypt()
+ * @param string $var
+ * @access private
+ */
+ function _increment_str(&$var)
+ {
+ for ($i = 4; $i <= strlen($var); $i+= 4) {
+ $temp = substr($var, -$i, 4);
+ switch ($temp) {
+ case "\xFF\xFF\xFF\xFF":
+ $var = substr_replace($var, "\x00\x00\x00\x00", -$i, 4);
+ break;
+ case "\x7F\xFF\xFF\xFF":
+ $var = substr_replace($var, "\x80\x00\x00\x00", -$i, 4);
+ return;
+ default:
+ $temp = unpack('Nnum', $temp);
+ $var = substr_replace($var, pack('N', $temp['num'] + 1), -$i, 4);
+ return;
+ }
+ }
+
+ $remainder = strlen($var) % 4;
+
+ if ($remainder == 0) {
+ return;
+ }
+
+ $temp = unpack('Nnum', str_pad(substr($var, 0, $remainder), 4, "\0", STR_PAD_LEFT));
+ $temp = substr(pack('N', $temp['num'] + 1), -$remainder);
+ $var = substr_replace($var, $temp, 0, $remainder);
+ }
+
+ /**
+ * Setup the performance-optimized function for de/encrypt()
+ *
+ * Stores the created (or existing) callback function-name
+ * in $this->inline_crypt
+ *
+ * Internally for phpseclib developers:
+ *
+ * _setupInlineCrypt() would be called only if:
+ *
+ * - $engine == self::ENGINE_INTERNAL and
+ *
+ * - $use_inline_crypt === true
+ *
+ * - each time on _setup(), after(!) _setupKey()
+ *
+ *
+ * This ensures that _setupInlineCrypt() has always a
+ * full ready2go initializated internal cipher $engine state
+ * where, for example, the keys allready expanded,
+ * keys/block_size calculated and such.
+ *
+ * It is, each time if called, the responsibility of _setupInlineCrypt():
+ *
+ * - to set $this->inline_crypt to a valid and fully working callback function
+ * as a (faster) replacement for encrypt() / decrypt()
+ *
+ * - NOT to create unlimited callback functions (for memory reasons!)
+ * no matter how often _setupInlineCrypt() would be called. At some
+ * point of amount they must be generic re-useable.
+ *
+ * - the code of _setupInlineCrypt() it self,
+ * and the generated callback code,
+ * must be, in following order:
+ * - 100% safe
+ * - 100% compatible to encrypt()/decrypt()
+ * - using only php5+ features/lang-constructs/php-extensions if
+ * compatibility (down to php4) or fallback is provided
+ * - readable/maintainable/understandable/commented and... not-cryptic-styled-code :-)
+ * - >= 10% faster than encrypt()/decrypt() [which is, by the way,
+ * the reason for the existence of _setupInlineCrypt() :-)]
+ * - memory-nice
+ * - short (as good as possible)
+ *
+ * Note: - _setupInlineCrypt() is using _createInlineCryptFunction() to create the full callback function code.
+ * - In case of using inline crypting, _setupInlineCrypt() must extend by the child \phpseclib\Crypt\* class.
+ * - The following variable names are reserved:
+ * - $_* (all variable names prefixed with an underscore)
+ * - $self (object reference to it self. Do not use $this, but $self instead)
+ * - $in (the content of $in has to en/decrypt by the generated code)
+ * - The callback function should not use the 'return' statement, but en/decrypt'ing the content of $in only
+ *
+ *
+ * @see self::_setup()
+ * @see self::_createInlineCryptFunction()
+ * @see self::encrypt()
+ * @see self::decrypt()
+ * @access private
+ * @internal If a Crypt_* class providing inline crypting it must extend _setupInlineCrypt()
+ */
+ function _setupInlineCrypt()
+ {
+ // If, for any reason, an extending \phpseclib\Crypt\Base() \phpseclib\Crypt\* class
+ // not using inline crypting then it must be ensured that: $this->use_inline_crypt = false
+ // ie in the class var declaration of $use_inline_crypt in general for the \phpseclib\Crypt\* class,
+ // in the constructor at object instance-time
+ // or, if it's runtime-specific, at runtime
+
+ $this->use_inline_crypt = false;
+ }
+
+ /**
+ * Creates the performance-optimized function for en/decrypt()
+ *
+ * Internally for phpseclib developers:
+ *
+ * _createInlineCryptFunction():
+ *
+ * - merge the $cipher_code [setup'ed by _setupInlineCrypt()]
+ * with the current [$this->]mode of operation code
+ *
+ * - create the $inline function, which called by encrypt() / decrypt()
+ * as its replacement to speed up the en/decryption operations.
+ *
+ * - return the name of the created $inline callback function
+ *
+ * - used to speed up en/decryption
+ *
+ *
+ *
+ * The main reason why can speed up things [up to 50%] this way are:
+ *
+ * - using variables more effective then regular.
+ * (ie no use of expensive arrays but integers $k_0, $k_1 ...
+ * or even, for example, the pure $key[] values hardcoded)
+ *
+ * - avoiding 1000's of function calls of ie _encryptBlock()
+ * but inlining the crypt operations.
+ * in the mode of operation for() loop.
+ *
+ * - full loop unroll the (sometimes key-dependent) rounds
+ * avoiding this way ++$i counters and runtime-if's etc...
+ *
+ * The basic code architectur of the generated $inline en/decrypt()
+ * lambda function, in pseudo php, is:
+ *
+ * <code>
+ * +----------------------------------------------------------------------------------------------+
+ * | callback $inline = create_function: |
+ * | lambda_function_0001_crypt_ECB($action, $text) |
+ * | { |
+ * | INSERT PHP CODE OF: |
+ * | $cipher_code['init_crypt']; // general init code. |
+ * | // ie: $sbox'es declarations used for |
+ * | // encrypt and decrypt'ing. |
+ * | |
+ * | switch ($action) { |
+ * | case 'encrypt': |
+ * | INSERT PHP CODE OF: |
+ * | $cipher_code['init_encrypt']; // encrypt sepcific init code. |
+ * | ie: specified $key or $box |
+ * | declarations for encrypt'ing. |
+ * | |
+ * | foreach ($ciphertext) { |
+ * | $in = $block_size of $ciphertext; |
+ * | |
+ * | INSERT PHP CODE OF: |
+ * | $cipher_code['encrypt_block']; // encrypt's (string) $in, which is always: |
+ * | // strlen($in) == $this->block_size |
+ * | // here comes the cipher algorithm in action |
+ * | // for encryption. |
+ * | // $cipher_code['encrypt_block'] has to |
+ * | // encrypt the content of the $in variable |
+ * | |
+ * | $plaintext .= $in; |
+ * | } |
+ * | return $plaintext; |
+ * | |
+ * | case 'decrypt': |
+ * | INSERT PHP CODE OF: |
+ * | $cipher_code['init_decrypt']; // decrypt sepcific init code |
+ * | ie: specified $key or $box |
+ * | declarations for decrypt'ing. |
+ * | foreach ($plaintext) { |
+ * | $in = $block_size of $plaintext; |
+ * | |
+ * | INSERT PHP CODE OF: |
+ * | $cipher_code['decrypt_block']; // decrypt's (string) $in, which is always |
+ * | // strlen($in) == $this->block_size |
+ * | // here comes the cipher algorithm in action |
+ * | // for decryption. |
+ * | // $cipher_code['decrypt_block'] has to |
+ * | // decrypt the content of the $in variable |
+ * | $ciphertext .= $in; |
+ * | } |
+ * | return $ciphertext; |
+ * | } |
+ * | } |
+ * +----------------------------------------------------------------------------------------------+
+ * </code>
+ *
+ * See also the \phpseclib\Crypt\*::_setupInlineCrypt()'s for
+ * productive inline $cipher_code's how they works.
+ *
+ * Structure of:
+ * <code>
+ * $cipher_code = array(
+ * 'init_crypt' => (string) '', // optional
+ * 'init_encrypt' => (string) '', // optional
+ * 'init_decrypt' => (string) '', // optional
+ * 'encrypt_block' => (string) '', // required
+ * 'decrypt_block' => (string) '' // required
+ * );
+ * </code>
+ *
+ * @see self::_setupInlineCrypt()
+ * @see self::encrypt()
+ * @see self::decrypt()
+ * @param array $cipher_code
+ * @access private
+ * @return string (the name of the created callback function)
+ */
+ function _createInlineCryptFunction($cipher_code)
+ {
+ $block_size = $this->block_size;
+
+ // optional
+ $init_crypt = isset($cipher_code['init_crypt']) ? $cipher_code['init_crypt'] : '';
+ $init_encrypt = isset($cipher_code['init_encrypt']) ? $cipher_code['init_encrypt'] : '';
+ $init_decrypt = isset($cipher_code['init_decrypt']) ? $cipher_code['init_decrypt'] : '';
+ // required
+ $encrypt_block = $cipher_code['encrypt_block'];
+ $decrypt_block = $cipher_code['decrypt_block'];
+
+ // Generating mode of operation inline code,
+ // merged with the $cipher_code algorithm
+ // for encrypt- and decryption.
+ switch ($this->mode) {
+ case self::MODE_ECB:
+ $encrypt = $init_encrypt . '
+ $_ciphertext = "";
+ $_plaintext_len = strlen($_text);
+
+ for ($_i = 0; $_i < $_plaintext_len; $_i+= '.$block_size.') {
+ $in = substr($_text, $_i, '.$block_size.');
+ '.$encrypt_block.'
+ $_ciphertext.= $in;
+ }
+
+ return $_ciphertext;
+ ';
+
+ $decrypt = $init_decrypt . '
+ $_plaintext = "";
+ $_text = str_pad($_text, strlen($_text) + ('.$block_size.' - strlen($_text) % '.$block_size.') % '.$block_size.', chr(0));
+ $_ciphertext_len = strlen($_text);
+
+ for ($_i = 0; $_i < $_ciphertext_len; $_i+= '.$block_size.') {
+ $in = substr($_text, $_i, '.$block_size.');
+ '.$decrypt_block.'
+ $_plaintext.= $in;
+ }
+
+ return $self->_unpad($_plaintext);
+ ';
+ break;
+ case self::MODE_CTR:
+ $encrypt = $init_encrypt . '
+ $_ciphertext = "";
+ $_plaintext_len = strlen($_text);
+ $_xor = $self->encryptIV;
+ $_buffer = &$self->enbuffer;
+ if (strlen($_buffer["ciphertext"])) {
+ for ($_i = 0; $_i < $_plaintext_len; $_i+= '.$block_size.') {
+ $_block = substr($_text, $_i, '.$block_size.');
+ if (strlen($_block) > strlen($_buffer["ciphertext"])) {
+ $in = $_xor;
+ '.$encrypt_block.'
+ $self->_increment_str($_xor);
+ $_buffer["ciphertext"].= $in;
+ }
+ $_key = $self->_string_shift($_buffer["ciphertext"], '.$block_size.');
+ $_ciphertext.= $_block ^ $_key;
+ }
+ } else {
+ for ($_i = 0; $_i < $_plaintext_len; $_i+= '.$block_size.') {
+ $_block = substr($_text, $_i, '.$block_size.');
+ $in = $_xor;
+ '.$encrypt_block.'
+ $self->_increment_str($_xor);
+ $_key = $in;
+ $_ciphertext.= $_block ^ $_key;
+ }
+ }
+ if ($self->continuousBuffer) {
+ $self->encryptIV = $_xor;
+ if ($_start = $_plaintext_len % '.$block_size.') {
+ $_buffer["ciphertext"] = substr($_key, $_start) . $_buffer["ciphertext"];
+ }
+ }
+
+ return $_ciphertext;
+ ';
+
+ $decrypt = $init_encrypt . '
+ $_plaintext = "";
+ $_ciphertext_len = strlen($_text);
+ $_xor = $self->decryptIV;
+ $_buffer = &$self->debuffer;
+
+ if (strlen($_buffer["ciphertext"])) {
+ for ($_i = 0; $_i < $_ciphertext_len; $_i+= '.$block_size.') {
+ $_block = substr($_text, $_i, '.$block_size.');
+ if (strlen($_block) > strlen($_buffer["ciphertext"])) {
+ $in = $_xor;
+ '.$encrypt_block.'
+ $self->_increment_str($_xor);
+ $_buffer["ciphertext"].= $in;
+ }
+ $_key = $self->_string_shift($_buffer["ciphertext"], '.$block_size.');
+ $_plaintext.= $_block ^ $_key;
+ }
+ } else {
+ for ($_i = 0; $_i < $_ciphertext_len; $_i+= '.$block_size.') {
+ $_block = substr($_text, $_i, '.$block_size.');
+ $in = $_xor;
+ '.$encrypt_block.'
+ $self->_increment_str($_xor);
+ $_key = $in;
+ $_plaintext.= $_block ^ $_key;
+ }
+ }
+ if ($self->continuousBuffer) {
+ $self->decryptIV = $_xor;
+ if ($_start = $_ciphertext_len % '.$block_size.') {
+ $_buffer["ciphertext"] = substr($_key, $_start) . $_buffer["ciphertext"];
+ }
+ }
+
+ return $_plaintext;
+ ';
+ break;
+ case self::MODE_CFB:
+ $encrypt = $init_encrypt . '
+ $_ciphertext = "";
+ $_buffer = &$self->enbuffer;
+
+ if ($self->continuousBuffer) {
+ $_iv = &$self->encryptIV;
+ $_pos = &$_buffer["pos"];
+ } else {
+ $_iv = $self->encryptIV;
+ $_pos = 0;
+ }
+ $_len = strlen($_text);
+ $_i = 0;
+ if ($_pos) {
+ $_orig_pos = $_pos;
+ $_max = '.$block_size.' - $_pos;
+ if ($_len >= $_max) {
+ $_i = $_max;
+ $_len-= $_max;
+ $_pos = 0;
+ } else {
+ $_i = $_len;
+ $_pos+= $_len;
+ $_len = 0;
+ }
+ $_ciphertext = substr($_iv, $_orig_pos) ^ $_text;
+ $_iv = substr_replace($_iv, $_ciphertext, $_orig_pos, $_i);
+ }
+ while ($_len >= '.$block_size.') {
+ $in = $_iv;
+ '.$encrypt_block.';
+ $_iv = $in ^ substr($_text, $_i, '.$block_size.');
+ $_ciphertext.= $_iv;
+ $_len-= '.$block_size.';
+ $_i+= '.$block_size.';
+ }
+ if ($_len) {
+ $in = $_iv;
+ '.$encrypt_block.'
+ $_iv = $in;
+ $_block = $_iv ^ substr($_text, $_i);
+ $_iv = substr_replace($_iv, $_block, 0, $_len);
+ $_ciphertext.= $_block;
+ $_pos = $_len;
+ }
+ return $_ciphertext;
+ ';
+
+ $decrypt = $init_encrypt . '
+ $_plaintext = "";
+ $_buffer = &$self->debuffer;
+
+ if ($self->continuousBuffer) {
+ $_iv = &$self->decryptIV;
+ $_pos = &$_buffer["pos"];
+ } else {
+ $_iv = $self->decryptIV;
+ $_pos = 0;
+ }
+ $_len = strlen($_text);
+ $_i = 0;
+ if ($_pos) {
+ $_orig_pos = $_pos;
+ $_max = '.$block_size.' - $_pos;
+ if ($_len >= $_max) {
+ $_i = $_max;
+ $_len-= $_max;
+ $_pos = 0;
+ } else {
+ $_i = $_len;
+ $_pos+= $_len;
+ $_len = 0;
+ }
+ $_plaintext = substr($_iv, $_orig_pos) ^ $_text;
+ $_iv = substr_replace($_iv, substr($_text, 0, $_i), $_orig_pos, $_i);
+ }
+ while ($_len >= '.$block_size.') {
+ $in = $_iv;
+ '.$encrypt_block.'
+ $_iv = $in;
+ $cb = substr($_text, $_i, '.$block_size.');
+ $_plaintext.= $_iv ^ $cb;
+ $_iv = $cb;
+ $_len-= '.$block_size.';
+ $_i+= '.$block_size.';
+ }
+ if ($_len) {
+ $in = $_iv;
+ '.$encrypt_block.'
+ $_iv = $in;
+ $_plaintext.= $_iv ^ substr($_text, $_i);
+ $_iv = substr_replace($_iv, substr($_text, $_i), 0, $_len);
+ $_pos = $_len;
+ }
+
+ return $_plaintext;
+ ';
+ break;
+ case self::MODE_CFB8:
+ $encrypt = $init_encrypt . '
+ $_ciphertext = "";
+ $_len = strlen($_text);
+ $_iv = $self->encryptIV;
+
+ for ($_i = 0; $_i < $_len; ++$_i) {
+ $in = $_iv;
+ '.$encrypt_block.'
+ $_ciphertext .= ($_c = $_text[$_i] ^ $in);
+ $_iv = substr($_iv, 1) . $_c;
+ }
+
+ if ($self->continuousBuffer) {
+ if ($_len >= '.$block_size.') {
+ $self->encryptIV = substr($_ciphertext, -'.$block_size.');
+ } else {
+ $self->encryptIV = substr($self->encryptIV, $_len - '.$block_size.') . substr($_ciphertext, -$_len);
+ }
+ }
+
+ return $_ciphertext;
+ ';
+ $decrypt = $init_encrypt . '
+ $_plaintext = "";
+ $_len = strlen($_text);
+ $_iv = $self->decryptIV;
+
+ for ($_i = 0; $_i < $_len; ++$_i) {
+ $in = $_iv;
+ '.$encrypt_block.'
+ $_plaintext .= $_text[$_i] ^ $in;
+ $_iv = substr($_iv, 1) . $_text[$_i];
+ }
+
+ if ($self->continuousBuffer) {
+ if ($_len >= '.$block_size.') {
+ $self->decryptIV = substr($_text, -'.$block_size.');
+ } else {
+ $self->decryptIV = substr($self->decryptIV, $_len - '.$block_size.') . substr($_text, -$_len);
+ }
+ }
+
+ return $_plaintext;
+ ';
+ break;
+ case self::MODE_OFB:
+ $encrypt = $init_encrypt . '
+ $_ciphertext = "";
+ $_plaintext_len = strlen($_text);
+ $_xor = $self->encryptIV;
+ $_buffer = &$self->enbuffer;
+
+ if (strlen($_buffer["xor"])) {
+ for ($_i = 0; $_i < $_plaintext_len; $_i+= '.$block_size.') {
+ $_block = substr($_text, $_i, '.$block_size.');
+ if (strlen($_block) > strlen($_buffer["xor"])) {
+ $in = $_xor;
+ '.$encrypt_block.'
+ $_xor = $in;
+ $_buffer["xor"].= $_xor;
+ }
+ $_key = $self->_string_shift($_buffer["xor"], '.$block_size.');
+ $_ciphertext.= $_block ^ $_key;
+ }
+ } else {
+ for ($_i = 0; $_i < $_plaintext_len; $_i+= '.$block_size.') {
+ $in = $_xor;
+ '.$encrypt_block.'
+ $_xor = $in;
+ $_ciphertext.= substr($_text, $_i, '.$block_size.') ^ $_xor;
+ }
+ $_key = $_xor;
+ }
+ if ($self->continuousBuffer) {
+ $self->encryptIV = $_xor;
+ if ($_start = $_plaintext_len % '.$block_size.') {
+ $_buffer["xor"] = substr($_key, $_start) . $_buffer["xor"];
+ }
+ }
+ return $_ciphertext;
+ ';
+
+ $decrypt = $init_encrypt . '
+ $_plaintext = "";
+ $_ciphertext_len = strlen($_text);
+ $_xor = $self->decryptIV;
+ $_buffer = &$self->debuffer;
+
+ if (strlen($_buffer["xor"])) {
+ for ($_i = 0; $_i < $_ciphertext_len; $_i+= '.$block_size.') {
+ $_block = substr($_text, $_i, '.$block_size.');
+ if (strlen($_block) > strlen($_buffer["xor"])) {
+ $in = $_xor;
+ '.$encrypt_block.'
+ $_xor = $in;
+ $_buffer["xor"].= $_xor;
+ }
+ $_key = $self->_string_shift($_buffer["xor"], '.$block_size.');
+ $_plaintext.= $_block ^ $_key;
+ }
+ } else {
+ for ($_i = 0; $_i < $_ciphertext_len; $_i+= '.$block_size.') {
+ $in = $_xor;
+ '.$encrypt_block.'
+ $_xor = $in;
+ $_plaintext.= substr($_text, $_i, '.$block_size.') ^ $_xor;
+ }
+ $_key = $_xor;
+ }
+ if ($self->continuousBuffer) {
+ $self->decryptIV = $_xor;
+ if ($_start = $_ciphertext_len % '.$block_size.') {
+ $_buffer["xor"] = substr($_key, $_start) . $_buffer["xor"];
+ }
+ }
+ return $_plaintext;
+ ';
+ break;
+ case self::MODE_STREAM:
+ $encrypt = $init_encrypt . '
+ $_ciphertext = "";
+ '.$encrypt_block.'
+ return $_ciphertext;
+ ';
+ $decrypt = $init_decrypt . '
+ $_plaintext = "";
+ '.$decrypt_block.'
+ return $_plaintext;
+ ';
+ break;
+ // case self::MODE_CBC:
+ default:
+ $encrypt = $init_encrypt . '
+ $_ciphertext = "";
+ $_plaintext_len = strlen($_text);
+
+ $in = $self->encryptIV;
+
+ for ($_i = 0; $_i < $_plaintext_len; $_i+= '.$block_size.') {
+ $in = substr($_text, $_i, '.$block_size.') ^ $in;
+ '.$encrypt_block.'
+ $_ciphertext.= $in;
+ }
+
+ if ($self->continuousBuffer) {
+ $self->encryptIV = $in;
+ }
+
+ return $_ciphertext;
+ ';
+
+ $decrypt = $init_decrypt . '
+ $_plaintext = "";
+ $_text = str_pad($_text, strlen($_text) + ('.$block_size.' - strlen($_text) % '.$block_size.') % '.$block_size.', chr(0));
+ $_ciphertext_len = strlen($_text);
+
+ $_iv = $self->decryptIV;
+
+ for ($_i = 0; $_i < $_ciphertext_len; $_i+= '.$block_size.') {
+ $in = $_block = substr($_text, $_i, '.$block_size.');
+ '.$decrypt_block.'
+ $_plaintext.= $in ^ $_iv;
+ $_iv = $_block;
+ }
+
+ if ($self->continuousBuffer) {
+ $self->decryptIV = $_iv;
+ }
+
+ return $self->_unpad($_plaintext);
+ ';
+ break;
+ }
+
+ // Create the $inline function and return its name as string. Ready to run!
+ eval('$func = function ($_action, &$self, $_text) { ' . $init_crypt . 'if ($_action == "encrypt") { ' . $encrypt . ' } else { ' . $decrypt . ' } };');
+ return $func;
+ }
+
+ /**
+ * Holds the lambda_functions table (classwide)
+ *
+ * Each name of the lambda function, created from
+ * _setupInlineCrypt() && _createInlineCryptFunction()
+ * is stored, classwide (!), here for reusing.
+ *
+ * The string-based index of $function is a classwide
+ * unique value representing, at least, the $mode of
+ * operation (or more... depends of the optimizing level)
+ * for which $mode the lambda function was created.
+ *
+ * @access private
+ * @return array &$functions
+ */
+ function &_getLambdaFunctions()
+ {
+ static $functions = array();
+ return $functions;
+ }
+
+ /**
+ * Generates a digest from $bytes
+ *
+ * @see self::_setupInlineCrypt()
+ * @access private
+ * @param string $bytes
+ * @return string
+ */
+ function _hashInlineCryptFunction($bytes)
+ {
+ if (!isset(self::$WHIRLPOOL_AVAILABLE)) {
+ self::$WHIRLPOOL_AVAILABLE = extension_loaded('hash') && in_array('whirlpool', hash_algos());
+ }
+
+ $result = '';
+ $hash = $bytes;
+
+ switch (true) {
+ case self::$WHIRLPOOL_AVAILABLE:
+ foreach (str_split($bytes, 64) as $t) {
+ $hash = hash('whirlpool', $hash, true);
+ $result .= $t ^ $hash;
+ }
+ return $result . hash('whirlpool', $hash, true);
+ default:
+ $len = strlen($bytes);
+ for ($i = 0; $i < $len; $i+=20) {
+ $t = substr($bytes, $i, 20);
+ $hash = pack('H*', sha1($hash));
+ $result .= $t ^ $hash;
+ }
+ return $result . pack('H*', sha1($hash));
+ }
+ }
+
+ /**
+ * Convert float to int
+ *
+ * On ARM CPUs converting floats to ints doesn't always work
+ *
+ * @access private
+ * @param string $x
+ * @return int
+ */
+ function safe_intval($x)
+ {
+ switch (true) {
+ case is_int($x):
+ // PHP 5.3, per http://php.net/releases/5_3_0.php, introduced "more consistent float rounding"
+ case (php_uname('m') & "\xDF\xDF\xDF") != 'ARM':
+ return $x;
+ }
+ return (fmod($x, 0x80000000) & 0x7FFFFFFF) |
+ ((fmod(floor($x / 0x80000000), 2) & 1) << 31);
+ }
+
+ /**
+ * eval()'able string for in-line float to int
+ *
+ * @access private
+ * @return string
+ */
+ function safe_intval_inline()
+ {
+ switch (true) {
+ case defined('PHP_INT_SIZE') && PHP_INT_SIZE == 8:
+ case (php_uname('m') & "\xDF\xDF\xDF") != 'ARM':
+ return '%s';
+ break;
+ default:
+ $safeint = '(is_int($temp = %s) ? $temp : (fmod($temp, 0x80000000) & 0x7FFFFFFF) | ';
+ return $safeint . '((fmod(floor($temp / 0x80000000), 2) & 1) << 31))';
+ }
+ }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Net/SCP.php b/vendor/phpseclib/phpseclib/phpseclib/Net/SCP.php
new file mode 100644
index 000000000..cf13496cd
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Net/SCP.php
@@ -0,0 +1,342 @@
+<?php
+
+/**
+ * Pure-PHP implementation of SCP.
+ *
+ * PHP version 5
+ *
+ * The API for this library is modeled after the API from PHP's {@link http://php.net/book.ftp FTP extension}.
+ *
+ * Here's a short example of how to use this library:
+ * <code>
+ * <?php
+ * include 'vendor/autoload.php';
+ *
+ * $ssh = new \phpseclib\Net\SSH2('www.domain.tld');
+ * if (!$ssh->login('username', 'password')) {
+ * exit('bad login');
+ * }
+ * $scp = new \phpseclib\Net\SCP($ssh);
+ *
+ * $scp->put('abcd', str_repeat('x', 1024*1024));
+ * ?>
+ * </code>
+ *
+ * @category Net
+ * @package SCP
+ * @author Jim Wigginton <terrafrost@php.net>
+ * @copyright 2010 Jim Wigginton
+ * @license http://www.opensource.org/licenses/mit-license.html MIT License
+ * @link http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib\Net;
+
+/**
+ * Pure-PHP implementations of SCP.
+ *
+ * @package SCP
+ * @author Jim Wigginton <terrafrost@php.net>
+ * @access public
+ */
+class SCP
+{
+ /**#@+
+ * @access public
+ * @see \phpseclib\Net\SCP::put()
+ */
+ /**
+ * Reads data from a local file.
+ */
+ const SOURCE_LOCAL_FILE = 1;
+ /**
+ * Reads data from a string.
+ */
+ const SOURCE_STRING = 2;
+ /**#@-*/
+
+ /**#@+
+ * @access private
+ * @see \phpseclib\Net\SCP::_send()
+ * @see \phpseclib\Net\SCP::_receive()
+ */
+ /**
+ * SSH1 is being used.
+ */
+ const MODE_SSH1 = 1;
+ /**
+ * SSH2 is being used.
+ */
+ const MODE_SSH2 = 2;
+ /**#@-*/
+
+ /**
+ * SSH Object
+ *
+ * @var object
+ * @access private
+ */
+ var $ssh;
+
+ /**
+ * Packet Size
+ *
+ * @var int
+ * @access private
+ */
+ var $packet_size;
+
+ /**
+ * Mode
+ *
+ * @var int
+ * @access private
+ */
+ var $mode;
+
+ /**
+ * Default Constructor.
+ *
+ * Connects to an SSH server
+ *
+ * @param \phpseclib\Net\SSH1|\phpseclib\Net\SSH2 $ssh
+ * @return \phpseclib\Net\SCP
+ * @access public
+ */
+ function __construct($ssh)
+ {
+ if ($ssh instanceof SSH2) {
+ $this->mode = self::MODE_SSH2;
+ } elseif ($ssh instanceof SSH1) {
+ $this->packet_size = 50000;
+ $this->mode = self::MODE_SSH1;
+ } else {
+ return;
+ }
+
+ $this->ssh = $ssh;
+ }
+
+ /**
+ * Uploads a file to the SCP server.
+ *
+ * By default, \phpseclib\Net\SCP::put() does not read from the local filesystem. $data is dumped directly into $remote_file.
+ * So, for example, if you set $data to 'filename.ext' and then do \phpseclib\Net\SCP::get(), you will get a file, twelve bytes
+ * long, containing 'filename.ext' as its contents.
+ *
+ * Setting $mode to self::SOURCE_LOCAL_FILE will change the above behavior. With self::SOURCE_LOCAL_FILE, $remote_file will
+ * contain as many bytes as filename.ext does on your local filesystem. If your filename.ext is 1MB then that is how
+ * large $remote_file will be, as well.
+ *
+ * Currently, only binary mode is supported. As such, if the line endings need to be adjusted, you will need to take
+ * care of that, yourself.
+ *
+ * @param string $remote_file
+ * @param string $data
+ * @param int $mode
+ * @param callable $callback
+ * @return bool
+ * @access public
+ */
+ function put($remote_file, $data, $mode = self::SOURCE_STRING, $callback = null)
+ {
+ if (!isset($this->ssh)) {
+ return false;
+ }
+
+ if (empty($remote_file)) {
+ user_error('remote_file cannot be blank', E_USER_NOTICE);
+ return false;
+ }
+
+ if (!$this->ssh->exec('scp -t ' . escapeshellarg($remote_file), false)) { // -t = to
+ return false;
+ }
+
+ $temp = $this->_receive();
+ if ($temp !== chr(0)) {
+ return false;
+ }
+
+ if ($this->mode == self::MODE_SSH2) {
+ $this->packet_size = $this->ssh->packet_size_client_to_server[SSH2::CHANNEL_EXEC] - 4;
+ }
+
+ $remote_file = basename($remote_file);
+
+ if ($mode == self::SOURCE_STRING) {
+ $size = strlen($data);
+ } else {
+ if (!is_file($data)) {
+ user_error("$data is not a valid file", E_USER_NOTICE);
+ return false;
+ }
+
+ $fp = @fopen($data, 'rb');
+ if (!$fp) {
+ return false;
+ }
+ $size = filesize($data);
+ }
+
+ $this->_send('C0644 ' . $size . ' ' . $remote_file . "\n");
+
+ $temp = $this->_receive();
+ if ($temp !== chr(0)) {
+ return false;
+ }
+
+ $sent = 0;
+ while ($sent < $size) {
+ $temp = $mode & self::SOURCE_STRING ? substr($data, $sent, $this->packet_size) : fread($fp, $this->packet_size);
+ $this->_send($temp);
+ $sent+= strlen($temp);
+
+ if (is_callable($callback)) {
+ call_user_func($callback, $sent);
+ }
+ }
+ $this->_close();
+
+ if ($mode != self::SOURCE_STRING) {
+ fclose($fp);
+ }
+
+ return true;
+ }
+
+ /**
+ * Downloads a file from the SCP server.
+ *
+ * Returns a string containing the contents of $remote_file if $local_file is left undefined or a boolean false if
+ * the operation was unsuccessful. If $local_file is defined, returns true or false depending on the success of the
+ * operation
+ *
+ * @param string $remote_file
+ * @param string $local_file
+ * @return mixed
+ * @access public
+ */
+ function get($remote_file, $local_file = false)
+ {
+ if (!isset($this->ssh)) {
+ return false;
+ }
+
+ if (!$this->ssh->exec('scp -f ' . escapeshellarg($remote_file), false)) { // -f = from
+ return false;
+ }
+
+ $this->_send("\0");
+
+ if (!preg_match('#(?<perms>[^ ]+) (?<size>\d+) (?<name>.+)#', rtrim($this->_receive()), $info)) {
+ return false;
+ }
+
+ $this->_send("\0");
+
+ $size = 0;
+
+ if ($local_file !== false) {
+ $fp = @fopen($local_file, 'wb');
+ if (!$fp) {
+ return false;
+ }
+ }
+
+ $content = '';
+ while ($size < $info['size']) {
+ $data = $this->_receive();
+ // SCP usually seems to split stuff out into 16k chunks
+ $size+= strlen($data);
+
+ if ($local_file === false) {
+ $content.= $data;
+ } else {
+ fputs($fp, $data);
+ }
+ }
+
+ $this->_close();
+
+ if ($local_file !== false) {
+ fclose($fp);
+ return true;
+ }
+
+ return $content;
+ }
+
+ /**
+ * Sends a packet to an SSH server
+ *
+ * @param string $data
+ * @access private
+ */
+ function _send($data)
+ {
+ switch ($this->mode) {
+ case self::MODE_SSH2:
+ $this->ssh->_send_channel_packet(SSH2::CHANNEL_EXEC, $data);
+ break;
+ case self::MODE_SSH1:
+ $data = pack('CNa*', NET_SSH1_CMSG_STDIN_DATA, strlen($data), $data);
+ $this->ssh->_send_binary_packet($data);
+ }
+ }
+
+ /**
+ * Receives a packet from an SSH server
+ *
+ * @return string
+ * @access private
+ */
+ function _receive()
+ {
+ switch ($this->mode) {
+ case self::MODE_SSH2:
+ return $this->ssh->_get_channel_packet(SSH2::CHANNEL_EXEC, true);
+ case self::MODE_SSH1:
+ if (!$this->ssh->bitmap) {
+ return false;
+ }
+ while (true) {
+ $response = $this->ssh->_get_binary_packet();
+ switch ($response[SSH1::RESPONSE_TYPE]) {
+ case NET_SSH1_SMSG_STDOUT_DATA:
+ if (strlen($response[SSH1::RESPONSE_DATA]) < 4) {
+ return false;
+ }
+ extract(unpack('Nlength', $response[SSH1::RESPONSE_DATA]));
+ return $this->ssh->_string_shift($response[SSH1::RESPONSE_DATA], $length);
+ case NET_SSH1_SMSG_STDERR_DATA:
+ break;
+ case NET_SSH1_SMSG_EXITSTATUS:
+ $this->ssh->_send_binary_packet(chr(NET_SSH1_CMSG_EXIT_CONFIRMATION));
+ fclose($this->ssh->fsock);
+ $this->ssh->bitmap = 0;
+ return false;
+ default:
+ user_error('Unknown packet received', E_USER_NOTICE);
+ return false;
+ }
+ }
+ }
+ }
+
+ /**
+ * Closes the connection to an SSH server
+ *
+ * @access private
+ */
+ function _close()
+ {
+ switch ($this->mode) {
+ case self::MODE_SSH2:
+ $this->ssh->_close_channel(SSH2::CHANNEL_EXEC, true);
+ break;
+ case self::MODE_SSH1:
+ $this->ssh->disconnect();
+ }
+ }
+}
diff --git a/vendor/phpseclib/phpseclib/phpseclib/Net/SSH1.php b/vendor/phpseclib/phpseclib/phpseclib/Net/SSH1.php
new file mode 100644
index 000000000..e372b8b92
--- /dev/null
+++ b/vendor/phpseclib/phpseclib/phpseclib/Net/SSH1.php
@@ -0,0 +1,1646 @@
+<?php
+
+/**
+ * Pure-PHP implementation of SSHv1.
+ *
+ * PHP version 5
+ *
+ * Here's a short example of how to use this library:
+ * <code>
+ * <?php
+ * include 'vendor/autoload.php';
+ *
+ * $ssh = new \phpseclib\Net\SSH1('www.domain.tld');
+ * if (!$ssh->login('username', 'password')) {
+ * exit('Login Failed');
+ * }
+ *
+ * echo $ssh->exec('ls -la');
+ * ?>
+ * </code>
+ *
+ * Here's another short example:
+ * <code>
+ * <?php
+ * include 'vendor/autoload.php';
+ *
+ * $ssh = new \phpseclib\Net\SSH1('www.domain.tld');
+ * if (!$ssh->login('username', 'password')) {
+ * exit('Login Failed');
+ * }
+ *
+ * echo $ssh->read('username@username:~$');
+ * $ssh->write("ls -la\n");
+ * echo $ssh->read('username@username:~$');
+ * ?>
+ * </code>
+ *
+ * More information on the SSHv1 specification can be found by reading
+ * {@link http://www.snailbook.com/docs/protocol-1.5.txt protocol-1.5.txt}.
+ *
+ * @category Net
+ * @package SSH1
+ * @author Jim Wigginton <terrafrost@php.net>
+ * @copyright 2007 Jim Wigginton
+ * @license http://www.opensource.org/licenses/mit-license.html MIT License
+ * @link http://phpseclib.sourceforge.net
+ */
+
+namespace phpseclib\Net;
+
+use phpseclib\Crypt\DES;
+use phpseclib\Crypt\Random;
+use phpseclib\Crypt\TripleDES;
+use phpseclib\Math\BigInteger;
+
+/**
+ * Pure-PHP implementation of SSHv1.
+ *
+ * @package SSH1
+ * @author Jim Wigginton <terrafrost@php.net>
+ * @access public
+ */
+class SSH1
+{
+ /**#@+
+ * Encryption Methods
+ *
+ * @see \phpseclib\Net\SSH1::getSupportedCiphers()
+ * @access public
+ */
+ /**
+ * No encryption
+ *
+ * Not supported.
+ */
+ const CIPHER_NONE = 0;
+ /**
+ * IDEA in CFB mode
+ *
+ * Not supported.
+ */
+ const CIPHER_IDEA = 1;
+ /**
+ * DES in CBC mode
+ */
+ const CIPHER_DES = 2;
+ /**
+ * Triple-DES in CBC mode
+ *
+ * All implementations are required to support this
+ */
+ const CIPHER_3DES = 3;
+ /**
+ * TRI's Simple Stream encryption CBC
+ *
+ * Not supported nor is it defined in the official SSH1 specs. OpenSSH, however, does define it (see cipher.h),
+ * although it doesn't use it (see cipher.c)
+ */
+ const CIPHER_BROKEN_TSS = 4;
+ /**
+ * RC4
+ *
+ * Not supported.
+ *
+ * @internal According to the SSH1 specs:
+ *
+ * "The first 16 bytes of the session key are used as the key for
+ * the server to client direction. The remaining 16 bytes are used
+ * as the key for the client to server direction. This gives
+ * independent 128-bit keys for each direction."
+ *
+ * This library currently only supports encryption when the same key is being used for both directions. This is
+ * because there's only one $crypto object. Two could be added ($encrypt and $decrypt, perhaps).
+ */
+ const CIPHER_RC4 = 5;
+ /**
+ * Blowfish
+ *
+ * Not supported nor is it defined in the official SSH1 specs. OpenSSH, however, defines it (see cipher.h) and
+ * uses it (see cipher.c)
+ */
+ const CIPHER_BLOWFISH = 6;
+ /**#@-*/
+
+ /**#@+
+ * Authentication Methods
+ *
+ * @see \phpseclib\Net\SSH1::getSupportedAuthentications()
+ * @access public
+ */
+ /**
+ * .rhosts or /etc/hosts.equiv
+ */
+ const AUTH_RHOSTS = 1;
+ /**
+ * pure RSA authentication
+ */
+ const AUTH_RSA = 2;
+ /**
+ * password authentication
+ *
+ * This is the only method that is supported by this library.
+ */
+ const AUTH_PASSWORD = 3;
+ /**
+ * .rhosts with RSA host authentication
+ */
+ const AUTH_RHOSTS_RSA = 4;
+ /**#@-*/
+
+ /**#@+
+ * Terminal Modes
+ *
+ * @link http://3sp.com/content/developer/maverick-net/docs/Maverick.SSH.PseudoTerminalModesMembers.html
+ * @access private
+ */
+ const TTY_OP_END = 0;
+ /**#@-*/
+
+ /**
+ * The Response Type
+ *
+ * @see \phpseclib\Net\SSH1::_get_binary_packet()
+ * @access private
+ */
+ const RESPONSE_TYPE = 1;
+
+ /**
+ * The Response Data
+ *
+ * @see \phpseclib\Net\SSH1::_get_binary_packet()
+ * @access private
+ */
+ const RESPONSE_DATA = 2;
+
+ /**#@+
+ * Execution Bitmap Masks
+ *
+ * @see \phpseclib\Net\SSH1::bitmap
+ * @access private
+ */
+ const MASK_CONSTRUCTOR = 0x00000001;
+ const MASK_CONNECTED = 0x00000002;
+ const MASK_LOGIN = 0x00000004;
+ const MASK_SHELL = 0x00000008;
+ /**#@-*/
+
+ /**#@+
+ * @access public
+ * @see \phpseclib\Net\SSH1::getLog()
+ */
+ /**
+ * Returns the message numbers
+ */
+ const LOG_SIMPLE = 1;
+ /**
+ * Returns the message content
+ */
+ const LOG_COMPLEX = 2;
+ /**
+ * Outputs the content real-time
+ */
+ const LOG_REALTIME = 3;
+ /**
+ * Dumps the content real-time to a file
+ */
+ const LOG_REALTIME_FILE = 4;
+ /**#@-*/
+
+ /**#@+
+ * @access public
+ * @see \phpseclib\Net\SSH1::read()
+ */
+ /**
+ * Returns when a string matching $expect exactly is found
+ */
+ const READ_SIMPLE = 1;
+ /**
+ * Returns when a string matching the regular expression $expect is found
+ */
+ const READ_REGEX = 2;
+ /**#@-*/
+
+ /**
+ * The SSH identifier
+ *
+ * @var string
+ * @access private
+ */
+ var $identifier = 'SSH-1.5-phpseclib';
+
+ /**
+ * The Socket Object
+ *
+ * @var object
+ * @access private
+ */
+ var $fsock;
+
+ /**
+ * The cryptography object
+ *
+ * @var object
+ * @access private
+ */
+ var $crypto = false;
+
+ /**
+ * Execution Bitmap
+ *
+ * The bits that are set represent functions that have been called already. This is used to determine
+ * if a requisite function has been successfully executed. If not, an error should be thrown.
+ *
+ * @var int
+ * @access private
+ */
+ var $bitmap = 0;
+
+ /**
+ * The Server Key Public Exponent
+ *
+ * Logged for debug purposes
+ *
+ * @see self::getServerKeyPublicExponent()
+ * @var string
+ * @access private
+ */
+ var $server_key_public_exponent;
+
+ /**
+ * The Server Key Public Modulus
+ *
+ * Logged for debug purposes
+ *
+ * @see self::getServerKeyPublicModulus()
+ * @var string
+ * @access private
+ */
+ var $server_key_public_modulus;
+
+ /**
+ * The Host Key Public Exponent
+ *
+ * Logged for debug purposes
+ *
+ * @see self::getHostKeyPublicExponent()
+ * @var string
+ * @access private
+ */
+ var $host_key_public_exponent;
+
+ /**
+ * The Host Key Public Modulus
+ *
+ * Logged for debug purposes
+ *
+ * @see self::getHostKeyPublicModulus()
+ * @var string
+ * @access private
+ */
+ var $host_key_public_modulus;
+
+ /**
+ * Supported Ciphers
+ *
+ * Logged for debug purposes
+ *
+ * @see self::getSupportedCiphers()
+ * @var array
+ * @access private
+ */
+ var $supported_ciphers = array(
+ self::CIPHER_NONE => 'No encryption',
+ self::CIPHER_IDEA => 'IDEA in CFB mode',
+ self::CIPHER_DES => 'DES in CBC mode',
+ self::CIPHER_3DES => 'Triple-DES in CBC mode',
+ self::CIPHER_BROKEN_TSS => 'TRI\'s Simple Stream encryption CBC',
+ self::CIPHER_RC4 => 'RC4',
+ self::CIPHER_BLOWFISH => 'Blowfish'
+ );
+
+ /**
+ * Supported Authentications
+ *
+ * Logged for debug purposes
+ *
+ * @see self::getSupportedAuthentications()
+ * @var array
+ * @access private
+ */
+ var $supported_authentications = array(
+ self::AUTH_RHOSTS => '.rhosts or /etc/hosts.equiv',
+ self::AUTH_RSA => 'pure RSA authentication',
+ self::AUTH_PASSWORD => 'password authentication',
+ self::AUTH_RHOSTS_RSA => '.rhosts with RSA host authentication'
+ );
+
+ /**
+ * Server Identification
+ *
+ * @see self::getServerIdentification()
+ * @var string
+ * @access private
+ */
+ var $server_identification = '';
+
+ /**
+ * Protocol Flags
+ *
+ * @see self::__construct()
+ * @var array
+ * @access private
+ */
+ var $protocol_flags = array();
+
+ /**
+ * Protocol Flag Log
+ *
+ * @see self::getLog()
+ * @var array
+ * @access private
+ */
+ var $protocol_flag_log = array();
+
+ /**
+ * Message Log
+ *
+ * @see self::getLog()
+ * @var array
+ * @access private
+ */
+ var $message_log = array();
+
+ /**
+ * Real-time log file pointer
+ *
+ * @see self::_append_log()
+ * @var resource
+ * @access private
+ */
+ var $realtime_log_file;
+
+ /**
+ * Real-time log file size
+ *
+ * @see self::_append_log()
+ * @var int
+ * @access private
+ */
+ var $realtime_log_size;
+
+ /**
+ * Real-time log file wrap boolean
+ *
+ * @see self::_append_log()
+ * @var bool
+ * @access private
+ */
+ var $realtime_log_wrap;
+
+ /**
+ * Interactive Buffer
+ *
+ * @see self::read()
+ * @var array
+ * @access private
+ */
+ var $interactiveBuffer = '';
+
+ /**
+ * Timeout
+ *
+ * @see self::setTimeout()
+ * @access private
+ */
+ var $timeout;
+
+ /**
+ * Current Timeout
+ *
+ * @see self::_get_channel_packet()
+ * @access private
+ */
+ var $curTimeout;
+
+ /**
+ * Log Boundary
+ *
+ * @see self::_format_log()
+ * @access private
+ */
+ var $log_boundary = ':';
+
+ /**
+ * Log Long Width
+ *
+ * @see self::_format_log()
+ * @access private
+ */
+ var $log_long_width = 65;
+
+ /**
+ * Log Short Width
+ *
+ * @see self::_format_log()
+ * @access private
+ */
+ var $log_short_width = 16;
+
+ /**
+ * Hostname
+ *
+ * @see self::__construct()
+ * @see self::_connect()
+ * @var string
+ * @access private
+ */
+ var $host;
+
+ /**
+ * Port Number
+ *
+ * @see self::__construct()
+ * @see self::_connect()
+ * @var int
+ * @access private
+ */
+ var $port;
+
+ /**
+ * Timeout for initial connection
+ *
+ * Set by the constructor call. Calling setTimeout() is optional. If it's not called functions like
+ * exec() won't timeout unless some PHP setting forces it too. The timeout specified in the constructor,
+ * however, is non-optional. There will be a timeout, whether or not you set it. If you don't it'll be
+ * 10 seconds. It is used by fsockopen() in that function.
+ *
+ * @see self::__construct()
+ * @see self::_connect()
+ * @var int
+ * @access private
+ */
+ var $connectionTimeout;
+
+ /**
+ * Default cipher
+ *
+ * @see self::__construct()
+ * @see self::_connect()
+ * @var int
+ * @access private
+ */
+ var $cipher;
+
+ /**
+ * Default Constructor.
+ *
+ * Connects to an SSHv1 server
+ *
+ * @param string $host
+ * @param int $port
+ * @param int $timeout
+ * @param int $cipher
+ * @return \phpseclib\Net\SSH1
+ * @access public
+ */
+ function __construct($host, $port = 22, $timeout = 10, $cipher = self::CIPHER_3DES)
+ {
+ $this->protocol_flags = array(
+ 1 => 'NET_SSH1_MSG_DISCONNECT',
+ 2 => 'NET_SSH1_SMSG_PUBLIC_KEY',
+ 3 => 'NET_SSH1_CMSG_SESSION_KEY',
+ 4 => 'NET_SSH1_CMSG_USER',
+ 9 => 'NET_SSH1_CMSG_AUTH_PASSWORD',
+ 10 => 'NET_SSH1_CMSG_REQUEST_PTY',
+ 12 => 'NET_SSH1_CMSG_EXEC_SHELL',
+ 13 => 'NET_SSH1_CMSG_EXEC_CMD',
+ 14 => 'NET_SSH1_SMSG_SUCCESS',
+ 15 => 'NET_SSH1_SMSG_FAILURE',
+ 16 => 'NET_SSH1_CMSG_STDIN_DATA',
+ 17 => 'NET_SSH1_SMSG_STDOUT_DATA',
+ 18 => 'NET_SSH1_SMSG_STDERR_DATA',
+ 19 => 'NET_SSH1_CMSG_EOF',
+ 20 => 'NET_SSH1_SMSG_EXITSTATUS',
+ 33 => 'NET_SSH1_CMSG_EXIT_CONFIRMATION'
+ );
+
+ $this->_define_array($this->protocol_flags);
+
+ $this->host = $host;
+ $this->port = $port;
+ $this->connectionTimeout = $timeout;
+ $this->cipher = $cipher;
+ }
+
+ /**
+ * Connect to an SSHv1 server
+ *
+ * @return bool
+ * @access private
+ */
+ function _connect()
+ {
+ $this->fsock = @fsockopen($this->host, $this->port, $errno, $errstr, $this->connectionTimeout);
+ if (!$this->fsock) {
+ user_error(rtrim("Cannot connect to {$this->host}:{$this->port}. Error $errno. $errstr"));
+ return false;
+ }
+
+ $this->server_identification = $init_line = fgets($this->fsock, 255);
+
+ if (defined('NET_SSH1_LOGGING')) {
+ $this->_append_log('<-', $this->server_identification);
+ $this->_append_log('->', $this->identifier . "\r\n");
+ }
+
+ if (!preg_match('#SSH-([0-9\.]+)-(.+)#', $init_line, $parts)) {
+ user_error('Can only connect to SSH servers');
+ return false;
+ }
+ if ($parts[1][0] != 1) {
+ user_error("Cannot connect to SSH $parts[1] servers");
+ return false;
+ }
+
+ fputs($this->fsock, $this->identifier."\r\n");
+
+ $response = $this->_get_binary_packet();
+ if ($response[self::RESPONSE_TYPE] != NET_SSH1_SMSG_PUBLIC_KEY) {
+ user_error('Expected SSH_SMSG_PUBLIC_KEY');
+ return false;
+ }
+
+ $anti_spoofing_cookie = $this->_string_shift($response[self::RESPONSE_DATA], 8);
+
+ $this->_string_shift($response[self::RESPONSE_DATA], 4);
+
+ if (strlen($response[self::RESPONSE_DATA]) < 2) {
+ return false;
+ }
+ $temp = unpack('nlen', $this->_string_shift($response[self::RESPONSE_DATA], 2));
+ $server_key_public_exponent = new BigInteger($this->_string_shift($response[self::RESPONSE_DATA], ceil($temp['len'] / 8)), 256);
+ $this->server_key_public_exponent = $server_key_public_exponent;
+
+ if (strlen($response[self::RESPONSE_DATA]) < 2) {
+ return false;
+ }
+ $temp = unpack('nlen', $this->_string_shift($response[self::RESPONSE_DATA], 2));
+ $server_key_public_modulus = new BigInteger($this->_string_shift($response[self::RESPONSE_DATA], ceil($temp['len'] / 8)), 256);
+
+ $this->server_key_public_modulus = $server_key_public_modulus;
+
+ $this->_string_shift($response[self::RESPONSE_DATA], 4);
+
+ if (strlen($response[self::RESPONSE_DATA]) < 2) {
+ return false;
+ }
+ $temp = unpack('nlen', $this->_string_shift($response[self::RESPONSE_DATA], 2));
+ $host_key_public_exponent = new BigInteger($this->_string_shift($response[self::RESPONSE_DATA], ceil($temp['len'] / 8)), 256);
+ $this->host_key_public_exponent = $host_key_public_exponent;
+
+ if (strlen($response[self::RESPONSE_DATA]) < 2) {
+ return false;
+ }
+ $temp = unpack('nlen', $this->_string_shift($response[self::RESPONSE_DATA], 2));
+ $host_key_public_modulus = new BigInteger($this->_string_shift($response[self::RESPONSE_DATA], ceil($temp['len'] / 8)), 256);
+
+ $this->host_key_public_modulus = $host_key_public_modulus;
+
+ $this->_string_shift($response[self::RESPONSE_DATA], 4);
+
+ // get a list of the supported ciphers
+ if (strlen($response[self::RESPONSE_DATA]) < 4) {
+ return false;
+ }
+ extract(unpack('Nsupported_ciphers_mask', $this->_string_shift($response[self::RESPONSE_DATA], 4)));
+
+ foreach ($this->supported_ciphers as $mask => $name) {
+ if (($supported_ciphers_mask & (1 << $mask)) == 0) {
+ unset($this->supported_ciphers[$mask]);
+ }
+ }
+
+ // get a list of the supported authentications
+ if (strlen($response[self::RESPONSE_DATA]) < 4) {
+ return false;
+ }
+ extract(unpack('Nsupported_authentications_mask', $this->_string_shift($response[self::RESPONSE_DATA], 4)));
+ foreach ($this->supported_authentications as $mask => $name) {
+ if (($supported_authentications_mask & (1 << $mask)) == 0) {
+ unset($this->supported_authentications[$mask]);
+ }
+ }
+
+ $session_id = pack('H*', md5($host_key_public_modulus->toBytes() . $server_key_public_modulus->toBytes() . $anti_spoofing_cookie));
+
+ $session_key = Random::string(32);
+ $double_encrypted_session_key = $session_key ^ str_pad($session_id, 32, chr(0));
+
+ if ($server_key_public_modulus->compare($host_key_public_modulus) < 0) {
+ $double_encrypted_session_key = $this->_rsa_crypt(
+ $double_encrypted_session_key,
+ array(
+ $server_key_public_exponent,
+ $server_key_public_modulus
+ )
+ );
+ $double_encrypted_session_key = $this->_rsa_crypt(
+ $double_encrypted_session_key,
+ array(
+ $host_key_public_exponent,
+ $host_key_public_modulus
+ )
+ );
+ } else {
+ $double_encrypted_session_key = $this->_rsa_crypt(
+ $double_encrypted_session_key,
+ array(
+ $host_key_public_exponent,
+ $host_key_public_modulus
+ )
+ );
+ $double_encrypted_session_key = $this->_rsa_crypt(
+ $double_encrypted_session_key,
+ array(
+ $server_key_public_exponent,
+ $server_key_public_modulus
+ )
+ );
+ }
+
+ $cipher = isset($this->supported_ciphers[$this->cipher]) ? $this->cipher : self::CIPHER_3DES;
+ $data = pack('C2a*na*N', NET_SSH1_CMSG_SESSION_KEY, $cipher, $anti_spoofing_cookie, 8 * strlen($double_encrypted_session_key), $double_encrypted_session_key, 0);
+
+ if (!$this->_send_binary_packet($data)) {
+ user_error('Error sending SSH_CMSG_SESSION_KEY');
+ return false;
+ }
+
+ switch ($cipher) {
+ //case self::CIPHER_NONE:
+ // $this->crypto = new \phpseclib\Crypt\Null();
+ // break;
+ case self::CIPHER_DES:
+ $this->crypto = new DES();
+ $this->crypto->disablePadding();
+ $this->crypto->enableContinuousBuffer();
+ $this->crypto->setKey(substr($session_key, 0, 8));
+ break;
+ case self::CIPHER_3DES:
+ $this->crypto = new TripleDES(TripleDES::MODE_3CBC);
+ $this->crypto->disablePadding();
+ $this->crypto->enableContinuousBuffer();
+ $this->crypto->setKey(substr($session_key, 0, 24));
+ break;
+ //case self::CIPHER_RC4:
+ // $this->crypto = new RC4();
+ // $this->crypto->enableContinuousBuffer();
+ // $this->crypto->setKey(substr($session_key, 0, 16));
+ // break;
+ }
+
+ $response = $this->_get_binary_packet();
+
+ if ($response[self::RESPONSE_TYPE] != NET_SSH1_SMSG_SUCCESS) {
+ user_error('Expected SSH_SMSG_SUCCESS');
+ return false;
+ }
+
+ $this->bitmap = self::MASK_CONNECTED;
+
+ return true;
+ }
+
+ /**
+ * Login
+ *
+ * @param string $username
+ * @param string $password
+ * @return bool
+ * @access public
+ */
+ function login($username, $password = '')
+ {
+ if (!($this->bitmap & self::MASK_CONSTRUCTOR)) {
+ $this->bitmap |= self::MASK_CONSTRUCTOR;
+ if (!$this->_connect()) {
+ return false;
+ }
+ }
+
+ if (!($this->bitmap & self::MASK_CONNECTED)) {
+ return false;
+ }
+
+ $data = pack('CNa*', NET_SSH1_CMSG_USER, strlen($username), $username);
+
+ if (!$this->_send_binary_packet($data)) {
+ user_error('Error sending SSH_CMSG_USER');
+ return false;
+ }
+
+ $response = $this->_get_binary_packet();
+
+ if ($response === true) {
+ return false;
+ }
+ if ($response[self::RESPONSE_TYPE] == NET_SSH1_SMSG_SUCCESS) {
+ $this->bitmap |= self::MASK_LOGIN;
+ return true;
+ } elseif ($response[self::RESPONSE_TYPE] != NET_SSH1_SMSG_FAILURE) {
+ user_error('Expected SSH_SMSG_SUCCESS or SSH_SMSG_FAILURE');
+ return false;
+ }
+
+ $data = pack('CNa*', NET_SSH1_CMSG_AUTH_PASSWORD, strlen($password), $password);
+
+ if (!$this->_send_binary_packet($data)) {
+ user_error('Error sending SSH_CMSG_AUTH_PASSWORD');
+ return false;
+ }
+
+ // remove the username and password from the last logged packet
+ if (defined('NET_SSH1_LOGGING') && NET_SSH1_LOGGING == self::LOG_COMPLEX) {
+ $data = pack('CNa*', NET_SSH1_CMSG_AUTH_PASSWORD, strlen('password'), 'password');
+ $this->message_log[count($this->message_log) - 1] = $data;
+ }
+
+ $response = $this->_get_binary_packet();
+
+ if ($response === true) {
+ return false;
+ }
+ if ($response[self::RESPONSE_TYPE] == NET_SSH1_SMSG_SUCCESS) {
+ $this->bitmap |= self::MASK_LOGIN;
+ return true;
+ } elseif ($response[self::RESPONSE_TYPE] == NET_SSH1_SMSG_FAILURE) {
+ return false;
+ } else {
+ user_error('Expected SSH_SMSG_SUCCESS or SSH_SMSG_FAILURE');
+ return false;
+ }
+ }
+
+ /**
+ * Set Timeout
+ *
+ * $ssh->exec('ping 127.0.0.1'); on a Linux host will never return and will run indefinitely. setTimeout() makes it so it'll timeout.
+ * Setting $timeout to false or 0 will mean there is no timeout.
+ *
+ * @param mixed $timeout
+ */
+ function setTimeout($timeout)
+ {
+ $this->timeout = $this->curTimeout = $timeout;
+ }
+
+ /**
+ * Executes a command on a non-interactive shell, returns the output, and quits.
+ *
+ * An SSH1 server will close the connection after a command has been executed on a non-interactive shell. SSH2
+ * servers don't, however, this isn't an SSH2 client. The way this works, on the server, is by initiating a
+ * shell with the -s option, as discussed in the following links:
+ *
+ * {@link http://www.faqs.org/docs/bashman/bashref_65.html http://www.faqs.org/docs/bashman/bashref_65.html}
+ * {@link http://www.faqs.org/docs/bashman/bashref_62.html http://www.faqs.org/docs/bashman/bashref_62.html}
+ *
+ * To execute further commands, a new \phpseclib\Net\SSH1 object will need to be created.
+ *
+ * Returns false on failure and the output, otherwise.
+ *
+ * @see self::interactiveRead()
+ * @see self::interactiveWrite()
+ * @param string $cmd
+ * @param bool $block
+ * @return mixed
+ * @access public
+ */
+ function exec($cmd, $block = true)
+ {
+ if (!($this->bitmap & self::MASK_LOGIN)) {
+ user_error('Operation disallowed prior to login()');
+ return false;
+ }
+
+ $data = pack('CNa*', NET_SSH1_CMSG_EXEC_CMD, strlen($cmd), $cmd);
+
+ if (!$this->_send_binary_packet($data)) {
+ user_error('Error sending SSH_CMSG_EXEC_CMD');
+ return false;
+ }
+
+ if (!$block) {
+ return true;
+ }
+
+ $output = '';
+ $response = $this->_get_binary_packet();
+
+ if ($response !== false) {
+ do {
+ $output.= substr($response[self::RESPONSE_DATA], 4);
+ $response = $this->_get_binary_packet();
+ } while (is_array($response) && $response[self::RESPONSE_TYPE] != NET_SSH1_SMSG_EXITSTATUS);
+ }
+
+ $data = pack('C', NET_SSH1_CMSG_EXIT_CONFIRMATION);
+
+ // i don't think it's really all that important if this packet gets sent or not.
+ $this->_send_binary_packet($data);
+
+ fclose($this->fsock);
+
+ // reset the execution bitmap - a new \phpseclib\Net\SSH1 object needs to be created.
+ $this->bitmap = 0;
+
+ return $output;
+ }
+
+ /**
+ * Creates an interactive shell
+ *
+ * @see self::interactiveRead()
+ * @see self::interactiveWrite()
+ * @return bool
+ * @access private
+ */
+ function _initShell()
+ {
+ // connect using the sample parameters in protocol-1.5.txt.
+ // according to wikipedia.org's entry on text terminals, "the fundamental type of application running on a text
+ // terminal is a command line interpreter or shell". thus, opening a terminal session to run the shell.
+ $data = pack('CNa*N4C', NET_SSH1_CMSG_REQUEST_PTY, strlen('vt100'), 'vt100', 24, 80, 0, 0, self::TTY_OP_END);
+
+ if (!$this->_send_binary_packet($data)) {
+ user_error('Error sending SSH_CMSG_REQUEST_PTY');
+ return false;
+ }
+
+ $response = $this->_get_binary_packet();
+
+ if ($response === true) {
+ return false;
+ }
+ if ($response[self::RESPONSE_TYPE] != NET_SSH1_SMSG_SUCCESS) {
+ user_error('Expected SSH_SMSG_SUCCESS');
+ return false;
+ }
+
+ $data = pack('C', NET_SSH1_CMSG_EXEC_SHELL);
+
+ if (!$this->_send_binary_packet($data)) {
+ user_error('Error sending SSH_CMSG_EXEC_SHELL');
+ return false;
+ }
+
+ $this->bitmap |= self::MASK_SHELL;
+
+ //stream_set_blocking($this->fsock, 0);
+
+ return true;
+ }
+
+ /**
+ * Inputs a command into an interactive shell.
+ *
+ * @see self::interactiveWrite()
+ * @param string $cmd
+ * @return bool
+ * @access public
+ */
+ function write($cmd)
+ {
+ return $this->interactiveWrite($cmd);
+ }
+
+ /**
+ * Returns the output of an interactive shell when there's a match for $expect
+ *
+ * $expect can take the form of a string literal or, if $mode == self::READ_REGEX,
+ * a regular expression.
+ *
+ * @see self::write()
+ * @param string $expect
+ * @param int $mode
+ * @return bool
+ * @access public
+ */
+ function read($expect, $mode = self::READ_SIMPLE)
+ {
+ if (!($this->bitmap & self::MASK_LOGIN)) {
+ user_error('Operation disallowed prior to login()');
+ return false;
+ }
+
+ if (!($this->bitmap & self::MASK_SHELL) && !$this->_initShell()) {
+ user_error('Unable to initiate an interactive shell session');
+ return false;
+ }
+
+ $match = $expect;
+ while (true) {
+ if ($mode == self::READ_REGEX) {
+ preg_match($expect, $this->interactiveBuffer, $matches);
+ $match = isset($matches[0]) ? $matches[0] : '';
+ }
+ $pos = strlen($match) ? strpos($this->interactiveBuffer, $match) : false;
+ if ($pos !== false) {
+ return $this->_string_shift($this->interactiveBuffer, $pos + strlen($match));
+ }
+ $response = $this->_get_binary_packet();
+
+ if ($response === true) {
+ return $this->_string_shift($this->interactiveBuffer, strlen($this->interactiveBuffer));
+ }
+ $this->interactiveBuffer.= substr($response[self::RESPONSE_DATA], 4);
+ }
+ }
+
+ /**
+ * Inputs a command into an interactive shell.
+ *
+ * @see self::interactiveRead()
+ * @param string $cmd
+ * @return bool
+ * @access public
+ */
+ function interactiveWrite($cmd)
+ {
+ if (!($this->bitmap & self::MASK_LOGIN)) {
+ user_error('Operation disallowed prior to login()');
+ return false;
+ }
+
+ if (!($this->bitmap & self::MASK_SHELL) && !$this->_initShell()) {
+ user_error('Unable to initiate an interactive shell session');
+ return false;
+ }
+
+ $data = pack('CNa*', NET_SSH1_CMSG_STDIN_DATA, strlen($cmd), $cmd);
+
+ if (!$this->_send_binary_packet($data)) {
+ user_error('Error sending SSH_CMSG_STDIN');
+ return false;
+ }
+
+ return true;
+ }
+
+ /**
+ * Returns the output of an interactive shell when no more output is available.
+ *
+ * Requires PHP 4.3.0 or later due to the use of the stream_select() function. If you see stuff like
+ * "^[[00m", you're seeing ANSI escape codes. According to
+ * {@link http://support.microsoft.com/kb/101875 How to Enable ANSI.SYS in a Command Window}, "Windows NT
+ * does not support ANSI escape sequences in Win32 Console applications", so if you're a Windows user,
+ * there's not going to be much recourse.
+ *
+ * @see self::interactiveRead()
+ * @return string
+ * @access public
+ */
+ function interactiveRead()
+ {
+ if (!($this->bitmap & self::MASK_LOGIN)) {
+ user_error('Operation disallowed prior to login()');
+ return false;
+ }
+
+ if (!($this->bitmap & self::MASK_SHELL) && !$this->_initShell()) {
+ user_error('Unable to initiate an interactive shell session');
+ return false;
+ }
+
+ $read = array($this->fsock);
+ $write = $except = null;
+ if (stream_select($read, $write, $except, 0)) {
+ $response = $this->_get_binary_packet();
+ return substr($response[self::RESPONSE_DATA], 4);
+ } else {
+ return '';
+ }
+ }
+
+ /**
+ * Disconnect
+ *
+ * @access public
+ */
+ function disconnect()
+ {
+ $this->_disconnect();
+ }
+
+ /**
+ * Destructor.
+ *
+ * Will be called, automatically, if you're supporting just PHP5. If you're supporting PHP4, you'll need to call
+ * disconnect().
+ *
+ * @access public
+ */
+ function __destruct()
+ {
+ $this->_disconnect();
+ }
+
+ /**
+ * Disconnect
+ *
+ * @param string $msg
+ * @access private
+ */
+ function _disconnect($msg = 'Client Quit')
+ {
+ if ($this->bitmap) {
+ $data = pack('C', NET_SSH1_CMSG_EOF);
+ $this->_send_binary_packet($data);
+ /*
+ $response = $this->_get_binary_packet();
+ if ($response === true) {
+ $response = array(self::RESPONSE_TYPE => -1);
+ }
+ switch ($response[self::RESPONSE_TYPE]) {
+ case NET_SSH1_SMSG_EXITSTATUS:
+ $data = pack('C', NET_SSH1_CMSG_EXIT_CONFIRMATION);
+ break;
+ default:
+ $data = pack('CNa*', NET_SSH1_MSG_DISCONNECT, strlen($msg), $msg);
+ }
+ */
+ $data = pack('CNa*', NET_SSH1_MSG_DISCONNECT, strlen($msg), $msg);
+
+ $this->_send_binary_packet($data);
+ fclose($this->fsock);
+ $this->bitmap = 0;
+ }
+ }
+
+ /**
+ * Gets Binary Packets
+ *
+ * See 'The Binary Packet Protocol' of protocol-1.5.txt for more info.
+ *
+ * Also, this function could be improved upon by adding detection for the following exploit:
+ * http://www.securiteam.com/securitynews/5LP042K3FY.html
+ *
+ * @see self::_send_binary_packet()
+ * @return array
+ * @access private
+ */
+ function _get_binary_packet()
+ {
+ if (feof($this->fsock)) {
+ //user_error('connection closed prematurely');
+ return false;
+ }
+
+ if ($this->curTimeout) {
+ $read = array($this->fsock);
+ $write = $except = null;
+
+ $start = strtok(microtime(), ' ') + strtok(''); // http://php.net/microtime#61838
+ $sec = floor($this->curTimeout);
+ $usec = 1000000 * ($this->curTimeout - $sec);
+ // on windows this returns a "Warning: Invalid CRT parameters detected" error
+ if (!@stream_select($read, $write, $except, $sec, $usec) && !count($read)) {
+ //$this->_disconnect('Timeout');
+ return true;
+ }
+ $elapsed = strtok(microtime(), ' ') + strtok('') - $start;
+ $this->curTimeout-= $elapsed;
+ }
+
+ $start = strtok(microtime(), ' ') + strtok(''); // http://php.net/microtime#61838
+ $data = fread($this->fsock, 4);
+ if (strlen($data) < 4) {
+ return false;
+ }
+ $temp = unpack('Nlength', $data);
+
+ $padding_length = 8 - ($temp['length'] & 7);
+ $length = $temp['length'] + $padding_length;
+ $raw = '';
+
+ while ($length > 0) {
+ $temp = fread($this->fsock, $length);
+ if (strlen($temp) != $length) {
+ return false;
+ }
+ $raw.= $temp;
+ $length-= strlen($temp);
+ }
+ $stop = strtok(microtime(), ' ') + strtok('');
+
+ if (strlen($raw) && $this->crypto !== false) {
+ $raw = $this->crypto->decrypt($raw);
+ }
+
+ $padding = substr($raw, 0, $padding_length);
+ $type = $raw[$padding_length];
+ $data = substr($raw, $padding_length + 1, -4);
+
+ if (strlen($raw) < 4) {
+ return false;
+ }
+ $temp = unpack('Ncrc', substr($raw, -4));
+
+ //if ( $temp['crc'] != $this->_crc($padding . $type . $data) ) {
+ // user_error('Bad CRC in packet from server');
+ // return false;
+ //}
+
+ $type = ord($type);
+
+ if (defined('NET_SSH1_LOGGING')) {
+ $temp = isset($this->protocol_flags[$type]) ? $this->protocol_flags[$type] : 'UNKNOWN';
+ $temp = '<- ' . $temp .
+ ' (' . round($stop - $start, 4) . 's)';
+ $this->_append_log($temp, $data);
+ }
+
+ return array(
+ self::RESPONSE_TYPE => $type,
+ self::RESPONSE_DATA => $data
+ );
+ }
+
+ /**
+ * Sends Binary Packets
+ *
+ * Returns true on success, false on failure.
+ *
+ * @see self::_get_binary_packet()
+ * @param string $data
+ * @return bool
+ * @access private
+ */
+ function _send_binary_packet($data)
+ {
+ if (feof($this->fsock)) {
+ //user_error('connection closed prematurely');
+ return false;
+ }
+
+ $length = strlen($data) + 4;
+
+ $padding = Random::string(8 - ($length & 7));
+
+ $orig = $data;
+ $data = $padding . $data;
+ $data.= pack('N', $this->_crc($data));
+
+ if ($this->crypto !== false) {
+ $data = $this->crypto->encrypt($data);
+ }
+
+ $packet = pack('Na*', $length, $data);
+
+ $start = strtok(microtime(), ' ') + strtok(''); // http://php.net/microtime#61838
+ $result = strlen($packet) == fputs($this->fsock, $packet);
+ $stop = strtok(microtime(), ' ') + strtok('');
+
+ if (defined('NET_SSH1_LOGGING')) {
+ $temp = isset($this->protocol_flags[ord($orig[0])]) ? $this->protocol_flags[ord($orig[0])] : 'UNKNOWN';
+ $temp = '-> ' . $temp .
+ ' (' . round($stop - $start, 4) . 's)';
+ $this->_append_log($temp, $orig);
+ }
+
+ return $result;
+ }
+
+ /**
+ * Cyclic Redundancy Check (CRC)
+ *
+ * PHP's crc32 function is implemented slightly differently than the one that SSH v1 uses, so
+ * we've reimplemented it. A more detailed discussion of the differences can be found after
+ * $crc_lookup_table's initialization.
+ *
+ * @see self::_get_binary_packet()
+ * @see self::_send_binary_packet()
+ * @param string $data
+ * @return int
+ * @access private
+ */
+ function _crc($data)
+ {
+ static $crc_lookup_table = array(
+ 0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA,
+ 0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3,
+ 0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988,
+ 0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91,
+ 0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE,
+ 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7,
+ 0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC,
+ 0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5,
+ 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172,
+ 0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B,
+ 0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940,
+ 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59,
+ 0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116,
+ 0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F,
+ 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924,
+ 0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D,
+ 0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A,
+ 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433,
+ 0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818,
+ 0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01,
+ 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E,
+ 0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457,
+ 0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C,
+ 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65,
+ 0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2,
+ 0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB,
+ 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0,
+ 0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9,
+ 0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086,
+ 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F,
+ 0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4,
+ 0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD,
+ 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A,
+ 0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683,
+ 0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8,
+ 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1,
+ 0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE,
+ 0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7,
+ 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC,
+ 0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5,
+ 0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252,
+ 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B,
+ 0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60,
+ 0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79,
+ 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236,
+ 0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F,
+ 0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04,
+ 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D,
+ 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A,
+ 0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713,
+ 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38,
+ 0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21,
+ 0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E,
+ 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777,
+ 0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C,
+ 0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45,
+ 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2,
+ 0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB,
+ 0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0,
+ 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9,
+ 0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6,
+ 0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF,
+ 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94,
+ 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D
+ );
+
+ // For this function to yield the same output as PHP's crc32 function, $crc would have to be
+ // set to 0xFFFFFFFF, initially - not 0x00000000 as it currently is.
+ $crc = 0x00000000;
+ $length = strlen($data);
+
+ for ($i=0; $i<$length; $i++) {
+ // We AND $crc >> 8 with 0x00FFFFFF because we want the eight newly added bits to all
+ // be zero. PHP, unfortunately, doesn't always do this. 0x80000000 >> 8, as an example,
+ // yields 0xFF800000 - not 0x00800000. The following link elaborates:
+ // http://www.php.net/manual/en/language.operators.bitwise.php#57281
+ $crc = (($crc >> 8) & 0x00FFFFFF) ^ $crc_lookup_table[($crc & 0xFF) ^ ord($data[$i])];
+ }
+
+ // In addition to having to set $crc to 0xFFFFFFFF, initially, the return value must be XOR'd with
+ // 0xFFFFFFFF for this function to return the same thing that PHP's crc32 function would.
+ return $crc;
+ }
+
+ /**
+ * String Shift
+ *
+ * Inspired by array_shift
+ *
+ * @param string $string
+ * @param int $index
+ * @return string
+ * @access private
+ */
+ function _string_shift(&$string, $index = 1)
+ {
+ $substr = substr($string, 0, $index);
+ $string = substr($string, $index);
+ return $substr;
+ }
+
+ /**
+ * RSA Encrypt
+ *
+ * Returns mod(pow($m, $e), $n), where $n should be the product of two (large) primes $p and $q and where $e
+ * should be a number with the property that gcd($e, ($p - 1) * ($q - 1)) == 1. Could just make anything that
+ * calls this call modexp, instead, but I think this makes things clearer, maybe...
+ *
+ * @see self::__construct()
+ * @param BigInteger $m
+ * @param array $key
+ * @return BigInteger
+ * @access private
+ */
+ function _rsa_crypt($m, $key)
+ {
+ /*
+ $rsa = new RSA();
+ $rsa->loadKey($key, RSA::PUBLIC_FORMAT_RAW);
+ $rsa->setEncryptionMode(RSA::ENCRYPTION_PKCS1);
+ return $rsa->encrypt($m);
+ */
+
+ // To quote from protocol-1.5.txt:
+ // The most significant byte (which is only partial as the value must be
+ // less than the public modulus, which is never a power of two) is zero.
+ //
+ // The next byte contains the value 2 (which stands for public-key
+ // encrypted data in the PKCS standard [PKCS#1]). Then, there are non-
+ // zero random bytes to fill any unused space, a zero byte, and the data
+ // to be encrypted in the least significant bytes, the last byte of the
+ // data in the least significant byte.
+
+ // Presumably the part of PKCS#1 they're refering to is "Section 7.2.1 Encryption Operation",
+ // under "7.2 RSAES-PKCS1-v1.5" and "7 Encryption schemes" of the following URL:
+ // ftp://ftp.rsasecurity.com/pub/pkcs/pkcs-1/pkcs-1v2-1.pdf
+ $modulus = $key[1]->toBytes();
+ $length = strlen($modulus) - strlen($m) - 3;
+ $random = '';
+ while (strlen($random) != $length) {
+ $block = Random::string($length - strlen($random));
+ $block = str_replace("\x00", '', $block);
+ $random.= $block;
+ }
+ $temp = chr(0) . chr(2) . $random . chr(0) . $m;
+
+ $m = new BigInteger($temp, 256);
+ $m = $m->modPow($key[0], $key[1]);
+
+ return $m->toBytes();
+ }
+
+ /**
+ * Define Array
+ *
+ * Takes any number of arrays whose indices are integers and whose values are strings and defines a bunch of
+ * named constants from it, using the value as the name of the constant and the index as the value of the constant.
+ * If any of the constants that would be defined already exists, none of the constants will be defined.
+ *
+ * @access private
+ */
+ function _define_array()
+ {
+ $args = func_get_args();
+ foreach ($args as $arg) {
+ foreach ($arg as $key => $value) {
+ if (!defined($value)) {
+ define($value, $key);
+ } else {
+ break 2;
+ }
+ }
+ }
+ }
+
+ /**
+ * Returns a log of the packets that have been sent and received.
+ *
+ * Returns a string if NET_SSH1_LOGGING == self::LOG_COMPLEX, an array if NET_SSH1_LOGGING == self::LOG_SIMPLE and false if !defined('NET_SSH1_LOGGING')
+ *
+ * @access public
+ * @return array|false|string
+ */
+ function getLog()
+ {
+ if (!defined('NET_SSH1_LOGGING')) {
+ return false;
+ }
+
+ switch (NET_SSH1_LOGGING) {
+ case self::LOG_SIMPLE:
+ return $this->message_number_log;
+ break;
+ case self::LOG_COMPLEX:
+ return $this->_format_log($this->message_log, $this->protocol_flags_log);
+ break;
+ default:
+ return false;
+ }
+ }
+
+ /**
+ * Formats a log for printing
+ *
+ * @param array $message_log
+ * @param array $message_number_log
+ * @access private
+ * @return string
+ */
+ function _format_log($message_log, $message_number_log)
+ {
+ $output = '';
+ for ($i = 0; $i < count($message_log); $i++) {
+ $output.= $message_number_log[$i] . "\r\n";
+ $current_log = $message_log[$i];
+ $j = 0;
+ do {
+ if (strlen($current_log)) {
+ $output.= str_pad(dechex($j), 7, '0', STR_PAD_LEFT) . '0 ';
+ }
+ $fragment = $this->_string_shift($current_log, $this->log_short_width);
+ $hex = substr(preg_replace_callback('#.#s', array($this, '_format_log_helper'), $fragment), strlen($this->log_boundary));
+ // replace non ASCII printable characters with dots
+ // http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters
+ // also replace < with a . since < messes up the output on web browsers
+ $raw = preg_replace('#[^\x20-\x7E]|<#', '.', $fragment);
+ $output.= str_pad($hex, $this->log_long_width - $this->log_short_width, ' ') . $raw . "\r\n";
+ $j++;
+ } while (strlen($current_log));
+ $output.= "\r\n";
+ }
+
+ return $output;
+ }
+
+ /**
+ * Helper function for _format_log
+ *
+ * For use with preg_replace_callback()
+ *
+ * @param array $matches
+ * @access private
+ * @return string
+ */
+ function _format_log_helper($matches)
+ {
+ return $this->log_boundary . str_pad(dechex(ord($matches[0])), 2, '0', STR_PAD_LEFT);
+ }
+
+ /**
+ * Return the server key public exponent
+ *
+ * Returns, by default, the base-10 representation. If $raw_output is set to true, returns, instead,
+ * the raw bytes. This behavior is similar to PHP's md5() function.
+ *
+ * @param bool $raw_output
+ * @return string
+ * @access public
+ */
+ function getServerKeyPublicExponent($raw_output = false)
+ {
+ return $raw_output ? $this->server_key_public_exponent->toBytes() : $this->server_key_public_exponent->toString();
+ }
+
+ /**
+ * Return the server key public modulus
+ *
+ * Returns, by default, the base-10 representation. If $raw_output is set to true, returns, instead,
+ * the raw bytes. This behavior is similar to PHP's md5() function.
+ *
+ * @param bool $raw_output
+ * @return string
+ * @access public
+ */
+ function getServerKeyPublicModulus($raw_output = false)
+ {
+ return $raw_output ? $this->server_key_public_modulus->toBytes() : $this->server_key_public_modulus->toString();
+ }
+
+ /**
+ * Return the host key public exponent
+ *
+ * Returns, by default, the base-10 representation. If $raw_output is set to true, returns, instead,
+ * the raw bytes. This behavior is similar to PHP's md5() function.
+ *
+ * @param bool $raw_output
+ * @return string
+ * @access public
+ */
+ function getHostKeyPublicExponent($raw_output = false)
+ {
+ return $raw_output ? $this->host_key_public_exponent->toBytes() : $this->host_key_public_exponent->toString();
+ }
+
+ /**
+ * Return the host key public modulus
+ *
+ * Returns, by default, the base-10 representation. If $raw_output is set to true, returns, instead,
+ * the raw bytes. This behavior is similar to PHP's md5() function.
+ *
+ * @param bool $raw_output
+ * @return string
+ * @access public
+ */
+ function getHostKeyPublicModulus($raw_output = false)
+ {
+ return $raw_output ? $this->host_key_public_modulus->toBytes() : $this->host_key_public_modulus->toString();
+ }
+
+ /**
+ * Return a list of ciphers supported by SSH1 server.
+ *
+ * Just because a cipher is supported by an SSH1 server doesn't mean it's supported by this library. If $raw_output
+ * is set to true, returns, instead, an array of constants. ie. instead of array('Triple-DES in CBC mode'), you'll
+ * get array(self::CIPHER_3DES).
+ *
+ * @param bool $raw_output
+ * @return array
+ * @access public
+ */
+ function getSupportedCiphers($raw_output = false)
+ {
+ return $raw_output ? array_keys($this->supported_ciphers) : array_values($this->supported_ciphers);
+ }
+
+ /**
+ * Return a list of authentications supported by SSH1 server.
+ *
+ * Just because a cipher is supported by an SSH1 server doesn't mean it's supported by this library. If $raw_output
+ * is set to true, returns, instead, an array of constants. ie. instead of array('password authentication'), you'll
+ * get array(self::AUTH_PASSWORD).
+ *
+ * @param bool $raw_output
+ * @return array
+ * @access public
+ */
+ function getSupportedAuthentications($raw_output = false)
+ {
+ return $raw_output ? array_keys($this->supported_authentications) : array_values($this->supported_authentications);
+ }
+
+ /**
+ * Return the server identification.
+ *
+ * @return string
+ * @access public
+ */
+ function getServerIdentification()
+ {
+ return rtrim($this->server_identification);
+ }
+
+ /**
+ * Logs data packets
+ *
+ * Makes sure that only the last 1MB worth of packets will be logged
+ *
+ * @param int $protocol_flags
+ * @param string $message
+ * @access private
+ */
+ function _append_log($protocol_flags, $message)
+ {
+ switch (NET_SSH1_LOGGING) {
+ // useful for benchmarks
+ case self::LOG_SIMPLE:
+ $this->protocol_flags_log[] = $protocol_flags;
+ break;
+ // the most useful log for SSH1
+ case self::LOG_COMPLEX:
+ $this->protocol_flags_log[] = $protocol_flags;
+ $this->_string_shift($message);
+ $this->log_size+= strlen($message);
+ $this->message_log[] = $message;
+ while ($this->log_size > self::LOG_MAX_SIZE) {
+ $this->log_size-= strlen(array_shift($this->message_log));
+ array_shift($this->protocol_flags_log);
+ }
+ break;
+ // dump the output out realtime; packets may be interspersed with non packets,
+ // passwords won't be filtered out and select other packets may not be correctly
+ // identified
+ case self::LOG_REALTIME:
+ echo "<pre>\r\n" . $this->_format_log(array($message), array($protocol_flags)) . "\r\n</pre>\r\n";
+ @flush();
+ @ob_flush();
+ break;
+ // basically the same thing as self::LOG_REALTIME with the caveat that self::LOG_REALTIME_FILE
+ // needs to be defined and that the resultant log file will be capped out at self::LOG_MAX_SIZE.
+ // the earliest part of the log file is denoted by the first <<< START >>> and is not going to necessarily
+ // at the beginning of the file
+ case self::LOG_REALTIME_FILE:
+ if (!isset($this->realtime_log_file)) {
+ // PHP doesn't seem to like using constants in fopen()
+ $filename = self::LOG_REALTIME_FILE;
+ $fp = fopen($filename, 'w');
+ $this->realtime_log_file = $fp;
+ }
+ if (!is_resource($this->realtime_log_file)) {
+ break;
+ }
+ $entry = $this->_format_log(array($message), array($protocol_flags));
+ if ($this->realtime_log_wrap) {
+ $temp = "<<< START >>>\r\n";
+ $entry.= $temp;
+ fseek($this->realtime_log_file, ftell($this->realtime_log_file) - strlen($temp));
+ }
+ $this->realtime_log_size+= strlen($entry);
+ if ($this->realtime_log_size > self::LOG_MAX_SIZE) {
+ fseek($this->realtime_log_file, 0);
+ $this->realtime_log_size = strlen($entry);
+ $this->realtime_log_wrap = true;
+ }
+ fputs($this->realtime_log_file, $entry);
+ }
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 07:36:28 +0000