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<?php
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/**
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* Pure-PHP implementation of SSHv1.
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*
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* PHP version 5
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*
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* Here's a short example of how to use this library:
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* <code>
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* <?php
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* include 'vendor/autoload.php';
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*
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* $ssh = new \phpseclib\Net\SSH1('www.domain.tld');
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* if (!$ssh->login('username', 'password')) {
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* exit('Login Failed');
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* }
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*
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* echo $ssh->exec('ls -la');
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* ?>
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* </code>
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*
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* Here's another short example:
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* <code>
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* <?php
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* include 'vendor/autoload.php';
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*
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* $ssh = new \phpseclib\Net\SSH1('www.domain.tld');
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* if (!$ssh->login('username', 'password')) {
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* exit('Login Failed');
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* }
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*
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* echo $ssh->read('username@username:~$');
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* $ssh->write("ls -la\n");
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* echo $ssh->read('username@username:~$');
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* ?>
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* </code>
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*
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* More information on the SSHv1 specification can be found by reading
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* {@link http://www.snailbook.com/docs/protocol-1.5.txt protocol-1.5.txt}.
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*
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* @category Net
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* @package SSH1
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* @author Jim Wigginton <terrafrost@php.net>
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* @copyright 2007 Jim Wigginton
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* @license http://www.opensource.org/licenses/mit-license.html MIT License
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* @link http://phpseclib.sourceforge.net
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*/
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namespace phpseclib\Net;
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use phpseclib\Crypt\DES;
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use phpseclib\Crypt\Random;
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use phpseclib\Crypt\TripleDES;
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use phpseclib\Math\BigInteger;
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/**
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* Pure-PHP implementation of SSHv1.
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*
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* @package SSH1
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* @author Jim Wigginton <terrafrost@php.net>
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* @access public
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*/
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class SSH1
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{
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/**#@+
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* Encryption Methods
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*
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* @see \phpseclib\Net\SSH1::getSupportedCiphers()
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* @access public
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*/
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/**
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* No encryption
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*
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* Not supported.
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*/
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const CIPHER_NONE = 0;
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/**
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* IDEA in CFB mode
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*
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* Not supported.
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*/
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const CIPHER_IDEA = 1;
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/**
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* DES in CBC mode
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*/
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const CIPHER_DES = 2;
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/**
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* Triple-DES in CBC mode
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*
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* All implementations are required to support this
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*/
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const CIPHER_3DES = 3;
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/**
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* TRI's Simple Stream encryption CBC
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*
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* Not supported nor is it defined in the official SSH1 specs. OpenSSH, however, does define it (see cipher.h),
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* although it doesn't use it (see cipher.c)
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*/
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const CIPHER_BROKEN_TSS = 4;
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/**
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* RC4
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*
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* Not supported.
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*
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* @internal According to the SSH1 specs:
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*
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* "The first 16 bytes of the session key are used as the key for
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* the server to client direction. The remaining 16 bytes are used
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* as the key for the client to server direction. This gives
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* independent 128-bit keys for each direction."
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*
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* This library currently only supports encryption when the same key is being used for both directions. This is
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* because there's only one $crypto object. Two could be added ($encrypt and $decrypt, perhaps).
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*/
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const CIPHER_RC4 = 5;
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/**
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* Blowfish
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*
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* Not supported nor is it defined in the official SSH1 specs. OpenSSH, however, defines it (see cipher.h) and
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* uses it (see cipher.c)
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*/
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const CIPHER_BLOWFISH = 6;
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/**#@-*/
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/**#@+
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* Authentication Methods
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*
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* @see \phpseclib\Net\SSH1::getSupportedAuthentications()
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* @access public
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*/
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/**
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* .rhosts or /etc/hosts.equiv
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*/
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const AUTH_RHOSTS = 1;
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/**
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* pure RSA authentication
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*/
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const AUTH_RSA = 2;
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/**
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* password authentication
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*
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* This is the only method that is supported by this library.
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*/
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const AUTH_PASSWORD = 3;
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/**
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* .rhosts with RSA host authentication
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*/
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const AUTH_RHOSTS_RSA = 4;
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/**#@-*/
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/**#@+
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* Terminal Modes
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*
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* @link http://3sp.com/content/developer/maverick-net/docs/Maverick.SSH.PseudoTerminalModesMembers.html
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* @access private
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*/
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const TTY_OP_END = 0;
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/**#@-*/
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/**
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* The Response Type
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*
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* @see \phpseclib\Net\SSH1::_get_binary_packet()
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* @access private
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*/
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const RESPONSE_TYPE = 1;
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/**
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* The Response Data
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*
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* @see \phpseclib\Net\SSH1::_get_binary_packet()
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* @access private
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*/
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const RESPONSE_DATA = 2;
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/**#@+
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* Execution Bitmap Masks
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*
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* @see \phpseclib\Net\SSH1::bitmap
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* @access private
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*/
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const MASK_CONSTRUCTOR = 0x00000001;
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const MASK_CONNECTED = 0x00000002;
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const MASK_LOGIN = 0x00000004;
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const MASK_SHELL = 0x00000008;
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/**#@-*/
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/**#@+
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* @access public
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* @see \phpseclib\Net\SSH1::getLog()
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*/
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/**
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* Returns the message numbers
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*/
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const LOG_SIMPLE = 1;
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/**
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* Returns the message content
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*/
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const LOG_COMPLEX = 2;
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/**
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* Outputs the content real-time
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*/
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const LOG_REALTIME = 3;
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/**
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* Dumps the content real-time to a file
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*/
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const LOG_REALTIME_FILE = 4;
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/**#@-*/
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/**#@+
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* @access public
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* @see \phpseclib\Net\SSH1::read()
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*/
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/**
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* Returns when a string matching $expect exactly is found
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*/
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const READ_SIMPLE = 1;
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/**
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* Returns when a string matching the regular expression $expect is found
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*/
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const READ_REGEX = 2;
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/**#@-*/
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/**
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* The SSH identifier
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*
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* @var string
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* @access private
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*/
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var $identifier = 'SSH-1.5-phpseclib';
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/**
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* The Socket Object
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*
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* @var object
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* @access private
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*/
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var $fsock;
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/**
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* The cryptography object
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*
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* @var object
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* @access private
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*/
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var $crypto = false;
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/**
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* Execution Bitmap
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*
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* The bits that are set represent functions that have been called already. This is used to determine
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* if a requisite function has been successfully executed. If not, an error should be thrown.
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*
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* @var int
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* @access private
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*/
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var $bitmap = 0;
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/**
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* The Server Key Public Exponent
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*
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* Logged for debug purposes
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*
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* @see self::getServerKeyPublicExponent()
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* @var string
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* @access private
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*/
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var $server_key_public_exponent;
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/**
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* The Server Key Public Modulus
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*
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* Logged for debug purposes
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*
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* @see self::getServerKeyPublicModulus()
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* @var string
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* @access private
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*/
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var $server_key_public_modulus;
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/**
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* The Host Key Public Exponent
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*
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* Logged for debug purposes
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*
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* @see self::getHostKeyPublicExponent()
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* @var string
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* @access private
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*/
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var $host_key_public_exponent;
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/**
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* The Host Key Public Modulus
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*
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* Logged for debug purposes
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*
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* @see self::getHostKeyPublicModulus()
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* @var string
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* @access private
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*/
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var $host_key_public_modulus;
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/**
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* Supported Ciphers
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305 |
*
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306 |
* Logged for debug purposes
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307 |
*
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308 |
* @see self::getSupportedCiphers()
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* @var array
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* @access private
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311 |
*/
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var $supported_ciphers = array(
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self::CIPHER_NONE => 'No encryption',
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self::CIPHER_IDEA => 'IDEA in CFB mode',
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self::CIPHER_DES => 'DES in CBC mode',
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self::CIPHER_3DES => 'Triple-DES in CBC mode',
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self::CIPHER_BROKEN_TSS => 'TRI\'s Simple Stream encryption CBC',
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self::CIPHER_RC4 => 'RC4',
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self::CIPHER_BLOWFISH => 'Blowfish'
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);
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/**
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* Supported Authentications
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*
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325 |
* Logged for debug purposes
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*
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327 |
* @see self::getSupportedAuthentications()
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* @var array
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* @access private
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330 |
*/
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var $supported_authentications = array(
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self::AUTH_RHOSTS => '.rhosts or /etc/hosts.equiv',
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self::AUTH_RSA => 'pure RSA authentication',
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self::AUTH_PASSWORD => 'password authentication',
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self::AUTH_RHOSTS_RSA => '.rhosts with RSA host authentication'
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);
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337 |
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338 |
/**
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339 |
* Server Identification
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340 |
*
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341 |
* @see self::getServerIdentification()
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* @var string
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* @access private
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*/
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var $server_identification = '';
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346 |
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347 |
/**
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* Protocol Flags
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349 |
*
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350 |
* @see self::__construct()
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* @var array
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* @access private
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*/
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354 |
var $protocol_flags = array();
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355 |
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356 |
/**
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* Protocol Flag Log
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358 |
*
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359 |
* @see self::getLog()
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360 |
* @var array
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361 |
* @access private
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362 |
*/
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363 |
var $protocol_flag_log = array();
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364 |
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365 |
/**
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366 |
* Message Log
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367 |
*
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|
368 |
* @see self::getLog()
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* @var array
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* @access private
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*/
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372 |
var $message_log = array();
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373 |
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374 |
/**
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375 |
* Real-time log file pointer
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*
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377 |
* @see self::_append_log()
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378 |
* @var resource
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379 |
* @access private
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380 |
*/
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|
381 |
var $realtime_log_file;
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382 |
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383 |
/**
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384 |
* Real-time log file size
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385 |
*
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386 |
* @see self::_append_log()
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387 |
* @var int
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388 |
* @access private
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389 |
*/
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|
390 |
var $realtime_log_size;
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|
391 |
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|
392 |
/**
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|
393 |
* Real-time log file wrap boolean
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|
394 |
*
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395 |
* @see self::_append_log()
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|
396 |
* @var bool
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|
397 |
* @access private
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|
398 |
*/
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|
399 |
var $realtime_log_wrap;
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|
400 |
|
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|
401 |
/**
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|
402 |
* Interactive Buffer
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|
403 |
*
|
|
|
404 |
* @see self::read()
|
|
|
405 |
* @var array
|
|
|
406 |
* @access private
|
|
|
407 |
*/
|
|
|
408 |
var $interactiveBuffer = '';
|
|
|
409 |
|
|
|
410 |
/**
|
|
|
411 |
* Timeout
|
|
|
412 |
*
|
|
|
413 |
* @see self::setTimeout()
|
|
|
414 |
* @access private
|
|
|
415 |
*/
|
|
|
416 |
var $timeout;
|
|
|
417 |
|
|
|
418 |
/**
|
|
|
419 |
* Current Timeout
|
|
|
420 |
*
|
|
|
421 |
* @see self::_get_channel_packet()
|
|
|
422 |
* @access private
|
|
|
423 |
*/
|
|
|
424 |
var $curTimeout;
|
|
|
425 |
|
|
|
426 |
/**
|
|
|
427 |
* Log Boundary
|
|
|
428 |
*
|
|
|
429 |
* @see self::_format_log()
|
|
|
430 |
* @access private
|
|
|
431 |
*/
|
|
|
432 |
var $log_boundary = ':';
|
|
|
433 |
|
|
|
434 |
/**
|
|
|
435 |
* Log Long Width
|
|
|
436 |
*
|
|
|
437 |
* @see self::_format_log()
|
|
|
438 |
* @access private
|
|
|
439 |
*/
|
|
|
440 |
var $log_long_width = 65;
|
|
|
441 |
|
|
|
442 |
/**
|
|
|
443 |
* Log Short Width
|
|
|
444 |
*
|
|
|
445 |
* @see self::_format_log()
|
|
|
446 |
* @access private
|
|
|
447 |
*/
|
|
|
448 |
var $log_short_width = 16;
|
|
|
449 |
|
|
|
450 |
/**
|
|
|
451 |
* Hostname
|
|
|
452 |
*
|
|
|
453 |
* @see self::__construct()
|
|
|
454 |
* @see self::_connect()
|
|
|
455 |
* @var string
|
|
|
456 |
* @access private
|
|
|
457 |
*/
|
|
|
458 |
var $host;
|
|
|
459 |
|
|
|
460 |
/**
|
|
|
461 |
* Port Number
|
|
|
462 |
*
|
|
|
463 |
* @see self::__construct()
|
|
|
464 |
* @see self::_connect()
|
|
|
465 |
* @var int
|
|
|
466 |
* @access private
|
|
|
467 |
*/
|
|
|
468 |
var $port;
|
|
|
469 |
|
|
|
470 |
/**
|
|
|
471 |
* Timeout for initial connection
|
|
|
472 |
*
|
|
|
473 |
* Set by the constructor call. Calling setTimeout() is optional. If it's not called functions like
|
|
|
474 |
* exec() won't timeout unless some PHP setting forces it too. The timeout specified in the constructor,
|
|
|
475 |
* however, is non-optional. There will be a timeout, whether or not you set it. If you don't it'll be
|
|
|
476 |
* 10 seconds. It is used by fsockopen() in that function.
|
|
|
477 |
*
|
|
|
478 |
* @see self::__construct()
|
|
|
479 |
* @see self::_connect()
|
|
|
480 |
* @var int
|
|
|
481 |
* @access private
|
|
|
482 |
*/
|
|
|
483 |
var $connectionTimeout;
|
|
|
484 |
|
|
|
485 |
/**
|
|
|
486 |
* Default cipher
|
|
|
487 |
*
|
|
|
488 |
* @see self::__construct()
|
|
|
489 |
* @see self::_connect()
|
|
|
490 |
* @var int
|
|
|
491 |
* @access private
|
|
|
492 |
*/
|
|
|
493 |
var $cipher;
|
|
|
494 |
|
|
|
495 |
/**
|
|
|
496 |
* Default Constructor.
|
|
|
497 |
*
|
|
|
498 |
* Connects to an SSHv1 server
|
|
|
499 |
*
|
|
|
500 |
* @param string $host
|
|
|
501 |
* @param int $port
|
|
|
502 |
* @param int $timeout
|
|
|
503 |
* @param int $cipher
|
|
|
504 |
* @return \phpseclib\Net\SSH1
|
|
|
505 |
* @access public
|
|
|
506 |
*/
|
|
|
507 |
function __construct($host, $port = 22, $timeout = 10, $cipher = self::CIPHER_3DES)
|
|
|
508 |
{
|
|
|
509 |
$this->protocol_flags = array(
|
|
|
510 |
1 => 'NET_SSH1_MSG_DISCONNECT',
|
|
|
511 |
2 => 'NET_SSH1_SMSG_PUBLIC_KEY',
|
|
|
512 |
3 => 'NET_SSH1_CMSG_SESSION_KEY',
|
|
|
513 |
4 => 'NET_SSH1_CMSG_USER',
|
|
|
514 |
9 => 'NET_SSH1_CMSG_AUTH_PASSWORD',
|
|
|
515 |
10 => 'NET_SSH1_CMSG_REQUEST_PTY',
|
|
|
516 |
12 => 'NET_SSH1_CMSG_EXEC_SHELL',
|
|
|
517 |
13 => 'NET_SSH1_CMSG_EXEC_CMD',
|
|
|
518 |
14 => 'NET_SSH1_SMSG_SUCCESS',
|
|
|
519 |
15 => 'NET_SSH1_SMSG_FAILURE',
|
|
|
520 |
16 => 'NET_SSH1_CMSG_STDIN_DATA',
|
|
|
521 |
17 => 'NET_SSH1_SMSG_STDOUT_DATA',
|
|
|
522 |
18 => 'NET_SSH1_SMSG_STDERR_DATA',
|
|
|
523 |
19 => 'NET_SSH1_CMSG_EOF',
|
|
|
524 |
20 => 'NET_SSH1_SMSG_EXITSTATUS',
|
|
|
525 |
33 => 'NET_SSH1_CMSG_EXIT_CONFIRMATION'
|
|
|
526 |
);
|
|
|
527 |
|
|
|
528 |
$this->_define_array($this->protocol_flags);
|
|
|
529 |
|
|
|
530 |
$this->host = $host;
|
|
|
531 |
$this->port = $port;
|
|
|
532 |
$this->connectionTimeout = $timeout;
|
|
|
533 |
$this->cipher = $cipher;
|
|
|
534 |
}
|
|
|
535 |
|
|
|
536 |
/**
|
|
|
537 |
* Connect to an SSHv1 server
|
|
|
538 |
*
|
|
|
539 |
* @return bool
|
|
|
540 |
* @access private
|
|
|
541 |
*/
|
|
|
542 |
function _connect()
|
|
|
543 |
{
|
|
|
544 |
$this->fsock = @fsockopen($this->host, $this->port, $errno, $errstr, $this->connectionTimeout);
|
|
|
545 |
if (!$this->fsock) {
|
|
|
546 |
user_error(rtrim("Cannot connect to {$this->host}:{$this->port}. Error $errno. $errstr"));
|
|
|
547 |
return false;
|
|
|
548 |
}
|
|
|
549 |
|
|
|
550 |
$this->server_identification = $init_line = fgets($this->fsock, 255);
|
|
|
551 |
|
|
|
552 |
if (defined('NET_SSH1_LOGGING')) {
|
|
|
553 |
$this->_append_log('<-', $this->server_identification);
|
|
|
554 |
$this->_append_log('->', $this->identifier . "\r\n");
|
|
|
555 |
}
|
|
|
556 |
|
|
|
557 |
if (!preg_match('#SSH-([0-9\.]+)-(.+)#', $init_line, $parts)) {
|
|
|
558 |
user_error('Can only connect to SSH servers');
|
|
|
559 |
return false;
|
|
|
560 |
}
|
|
|
561 |
if ($parts[1][0] != 1) {
|
|
|
562 |
user_error("Cannot connect to SSH $parts[1] servers");
|
|
|
563 |
return false;
|
|
|
564 |
}
|
|
|
565 |
|
|
|
566 |
fputs($this->fsock, $this->identifier."\r\n");
|
|
|
567 |
|
|
|
568 |
$response = $this->_get_binary_packet();
|
|
|
569 |
if ($response[self::RESPONSE_TYPE] != NET_SSH1_SMSG_PUBLIC_KEY) {
|
|
|
570 |
user_error('Expected SSH_SMSG_PUBLIC_KEY');
|
|
|
571 |
return false;
|
|
|
572 |
}
|
|
|
573 |
|
|
|
574 |
$anti_spoofing_cookie = $this->_string_shift($response[self::RESPONSE_DATA], 8);
|
|
|
575 |
|
|
|
576 |
$this->_string_shift($response[self::RESPONSE_DATA], 4);
|
|
|
577 |
|
|
|
578 |
$temp = unpack('nlen', $this->_string_shift($response[self::RESPONSE_DATA], 2));
|
|
|
579 |
$server_key_public_exponent = new BigInteger($this->_string_shift($response[self::RESPONSE_DATA], ceil($temp['len'] / 8)), 256);
|
|
|
580 |
$this->server_key_public_exponent = $server_key_public_exponent;
|
|
|
581 |
|
|
|
582 |
$temp = unpack('nlen', $this->_string_shift($response[self::RESPONSE_DATA], 2));
|
|
|
583 |
$server_key_public_modulus = new BigInteger($this->_string_shift($response[self::RESPONSE_DATA], ceil($temp['len'] / 8)), 256);
|
|
|
584 |
$this->server_key_public_modulus = $server_key_public_modulus;
|
|
|
585 |
|
|
|
586 |
$this->_string_shift($response[self::RESPONSE_DATA], 4);
|
|
|
587 |
|
|
|
588 |
$temp = unpack('nlen', $this->_string_shift($response[self::RESPONSE_DATA], 2));
|
|
|
589 |
$host_key_public_exponent = new BigInteger($this->_string_shift($response[self::RESPONSE_DATA], ceil($temp['len'] / 8)), 256);
|
|
|
590 |
$this->host_key_public_exponent = $host_key_public_exponent;
|
|
|
591 |
|
|
|
592 |
$temp = unpack('nlen', $this->_string_shift($response[self::RESPONSE_DATA], 2));
|
|
|
593 |
$host_key_public_modulus = new BigInteger($this->_string_shift($response[self::RESPONSE_DATA], ceil($temp['len'] / 8)), 256);
|
|
|
594 |
$this->host_key_public_modulus = $host_key_public_modulus;
|
|
|
595 |
|
|
|
596 |
$this->_string_shift($response[self::RESPONSE_DATA], 4);
|
|
|
597 |
|
|
|
598 |
// get a list of the supported ciphers
|
|
|
599 |
extract(unpack('Nsupported_ciphers_mask', $this->_string_shift($response[self::RESPONSE_DATA], 4)));
|
|
|
600 |
foreach ($this->supported_ciphers as $mask => $name) {
|
|
|
601 |
if (($supported_ciphers_mask & (1 << $mask)) == 0) {
|
|
|
602 |
unset($this->supported_ciphers[$mask]);
|
|
|
603 |
}
|
|
|
604 |
}
|
|
|
605 |
|
|
|
606 |
// get a list of the supported authentications
|
|
|
607 |
extract(unpack('Nsupported_authentications_mask', $this->_string_shift($response[self::RESPONSE_DATA], 4)));
|
|
|
608 |
foreach ($this->supported_authentications as $mask => $name) {
|
|
|
609 |
if (($supported_authentications_mask & (1 << $mask)) == 0) {
|
|
|
610 |
unset($this->supported_authentications[$mask]);
|
|
|
611 |
}
|
|
|
612 |
}
|
|
|
613 |
|
|
|
614 |
$session_id = pack('H*', md5($host_key_public_modulus->toBytes() . $server_key_public_modulus->toBytes() . $anti_spoofing_cookie));
|
|
|
615 |
|
|
|
616 |
$session_key = Random::string(32);
|
|
|
617 |
$double_encrypted_session_key = $session_key ^ str_pad($session_id, 32, chr(0));
|
|
|
618 |
|
|
|
619 |
if ($server_key_public_modulus->compare($host_key_public_modulus) < 0) {
|
|
|
620 |
$double_encrypted_session_key = $this->_rsa_crypt(
|
|
|
621 |
$double_encrypted_session_key,
|
|
|
622 |
array(
|
|
|
623 |
$server_key_public_exponent,
|
|
|
624 |
$server_key_public_modulus
|
|
|
625 |
)
|
|
|
626 |
);
|
|
|
627 |
$double_encrypted_session_key = $this->_rsa_crypt(
|
|
|
628 |
$double_encrypted_session_key,
|
|
|
629 |
array(
|
|
|
630 |
$host_key_public_exponent,
|
|
|
631 |
$host_key_public_modulus
|
|
|
632 |
)
|
|
|
633 |
);
|
|
|
634 |
} else {
|
|
|
635 |
$double_encrypted_session_key = $this->_rsa_crypt(
|
|
|
636 |
$double_encrypted_session_key,
|
|
|
637 |
array(
|
|
|
638 |
$host_key_public_exponent,
|
|
|
639 |
$host_key_public_modulus
|
|
|
640 |
)
|
|
|
641 |
);
|
|
|
642 |
$double_encrypted_session_key = $this->_rsa_crypt(
|
|
|
643 |
$double_encrypted_session_key,
|
|
|
644 |
array(
|
|
|
645 |
$server_key_public_exponent,
|
|
|
646 |
$server_key_public_modulus
|
|
|
647 |
)
|
|
|
648 |
);
|
|
|
649 |
}
|
|
|
650 |
|
|
|
651 |
$cipher = isset($this->supported_ciphers[$this->cipher]) ? $this->cipher : self::CIPHER_3DES;
|
|
|
652 |
$data = pack('C2a*na*N', NET_SSH1_CMSG_SESSION_KEY, $cipher, $anti_spoofing_cookie, 8 * strlen($double_encrypted_session_key), $double_encrypted_session_key, 0);
|
|
|
653 |
|
|
|
654 |
if (!$this->_send_binary_packet($data)) {
|
|
|
655 |
user_error('Error sending SSH_CMSG_SESSION_KEY');
|
|
|
656 |
return false;
|
|
|
657 |
}
|
|
|
658 |
|
|
|
659 |
switch ($cipher) {
|
|
|
660 |
//case self::CIPHER_NONE:
|
|
|
661 |
// $this->crypto = new \phpseclib\Crypt\Null();
|
|
|
662 |
// break;
|
|
|
663 |
case self::CIPHER_DES:
|
|
|
664 |
$this->crypto = new DES();
|
|
|
665 |
$this->crypto->disablePadding();
|
|
|
666 |
$this->crypto->enableContinuousBuffer();
|
|
|
667 |
$this->crypto->setKey(substr($session_key, 0, 8));
|
|
|
668 |
break;
|
|
|
669 |
case self::CIPHER_3DES:
|
|
|
670 |
$this->crypto = new TripleDES(TripleDES::MODE_3CBC);
|
|
|
671 |
$this->crypto->disablePadding();
|
|
|
672 |
$this->crypto->enableContinuousBuffer();
|
|
|
673 |
$this->crypto->setKey(substr($session_key, 0, 24));
|
|
|
674 |
break;
|
|
|
675 |
//case self::CIPHER_RC4:
|
|
|
676 |
// $this->crypto = new RC4();
|
|
|
677 |
// $this->crypto->enableContinuousBuffer();
|
|
|
678 |
// $this->crypto->setKey(substr($session_key, 0, 16));
|
|
|
679 |
// break;
|
|
|
680 |
}
|
|
|
681 |
|
|
|
682 |
$response = $this->_get_binary_packet();
|
|
|
683 |
|
|
|
684 |
if ($response[self::RESPONSE_TYPE] != NET_SSH1_SMSG_SUCCESS) {
|
|
|
685 |
user_error('Expected SSH_SMSG_SUCCESS');
|
|
|
686 |
return false;
|
|
|
687 |
}
|
|
|
688 |
|
|
|
689 |
$this->bitmap = self::MASK_CONNECTED;
|
|
|
690 |
|
|
|
691 |
return true;
|
|
|
692 |
}
|
|
|
693 |
|
|
|
694 |
/**
|
|
|
695 |
* Login
|
|
|
696 |
*
|
|
|
697 |
* @param string $username
|
|
|
698 |
* @param string $password
|
|
|
699 |
* @return bool
|
|
|
700 |
* @access public
|
|
|
701 |
*/
|
|
|
702 |
function login($username, $password = '')
|
|
|
703 |
{
|
|
|
704 |
if (!($this->bitmap & self::MASK_CONSTRUCTOR)) {
|
|
|
705 |
$this->bitmap |= self::MASK_CONSTRUCTOR;
|
|
|
706 |
if (!$this->_connect()) {
|
|
|
707 |
return false;
|
|
|
708 |
}
|
|
|
709 |
}
|
|
|
710 |
|
|
|
711 |
if (!($this->bitmap & self::MASK_CONNECTED)) {
|
|
|
712 |
return false;
|
|
|
713 |
}
|
|
|
714 |
|
|
|
715 |
$data = pack('CNa*', NET_SSH1_CMSG_USER, strlen($username), $username);
|
|
|
716 |
|
|
|
717 |
if (!$this->_send_binary_packet($data)) {
|
|
|
718 |
user_error('Error sending SSH_CMSG_USER');
|
|
|
719 |
return false;
|
|
|
720 |
}
|
|
|
721 |
|
|
|
722 |
$response = $this->_get_binary_packet();
|
|
|
723 |
|
|
|
724 |
if ($response === true) {
|
|
|
725 |
return false;
|
|
|
726 |
}
|
|
|
727 |
if ($response[self::RESPONSE_TYPE] == NET_SSH1_SMSG_SUCCESS) {
|
|
|
728 |
$this->bitmap |= self::MASK_LOGIN;
|
|
|
729 |
return true;
|
|
|
730 |
} elseif ($response[self::RESPONSE_TYPE] != NET_SSH1_SMSG_FAILURE) {
|
|
|
731 |
user_error('Expected SSH_SMSG_SUCCESS or SSH_SMSG_FAILURE');
|
|
|
732 |
return false;
|
|
|
733 |
}
|
|
|
734 |
|
|
|
735 |
$data = pack('CNa*', NET_SSH1_CMSG_AUTH_PASSWORD, strlen($password), $password);
|
|
|
736 |
|
|
|
737 |
if (!$this->_send_binary_packet($data)) {
|
|
|
738 |
user_error('Error sending SSH_CMSG_AUTH_PASSWORD');
|
|
|
739 |
return false;
|
|
|
740 |
}
|
|
|
741 |
|
|
|
742 |
// remove the username and password from the last logged packet
|
|
|
743 |
if (defined('NET_SSH1_LOGGING') && NET_SSH1_LOGGING == self::LOG_COMPLEX) {
|
|
|
744 |
$data = pack('CNa*', NET_SSH1_CMSG_AUTH_PASSWORD, strlen('password'), 'password');
|
|
|
745 |
$this->message_log[count($this->message_log) - 1] = $data;
|
|
|
746 |
}
|
|
|
747 |
|
|
|
748 |
$response = $this->_get_binary_packet();
|
|
|
749 |
|
|
|
750 |
if ($response === true) {
|
|
|
751 |
return false;
|
|
|
752 |
}
|
|
|
753 |
if ($response[self::RESPONSE_TYPE] == NET_SSH1_SMSG_SUCCESS) {
|
|
|
754 |
$this->bitmap |= self::MASK_LOGIN;
|
|
|
755 |
return true;
|
|
|
756 |
} elseif ($response[self::RESPONSE_TYPE] == NET_SSH1_SMSG_FAILURE) {
|
|
|
757 |
return false;
|
|
|
758 |
} else {
|
|
|
759 |
user_error('Expected SSH_SMSG_SUCCESS or SSH_SMSG_FAILURE');
|
|
|
760 |
return false;
|
|
|
761 |
}
|
|
|
762 |
}
|
|
|
763 |
|
|
|
764 |
/**
|
|
|
765 |
* Set Timeout
|
|
|
766 |
*
|
|
|
767 |
* $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.
|
|
|
768 |
* Setting $timeout to false or 0 will mean there is no timeout.
|
|
|
769 |
*
|
|
|
770 |
* @param mixed $timeout
|
|
|
771 |
*/
|
|
|
772 |
function setTimeout($timeout)
|
|
|
773 |
{
|
|
|
774 |
$this->timeout = $this->curTimeout = $timeout;
|
|
|
775 |
}
|
|
|
776 |
|
|
|
777 |
/**
|
|
|
778 |
* Executes a command on a non-interactive shell, returns the output, and quits.
|
|
|
779 |
*
|
|
|
780 |
* An SSH1 server will close the connection after a command has been executed on a non-interactive shell. SSH2
|
|
|
781 |
* servers don't, however, this isn't an SSH2 client. The way this works, on the server, is by initiating a
|
|
|
782 |
* shell with the -s option, as discussed in the following links:
|
|
|
783 |
*
|
|
|
784 |
* {@link http://www.faqs.org/docs/bashman/bashref_65.html http://www.faqs.org/docs/bashman/bashref_65.html}
|
|
|
785 |
* {@link http://www.faqs.org/docs/bashman/bashref_62.html http://www.faqs.org/docs/bashman/bashref_62.html}
|
|
|
786 |
*
|
|
|
787 |
* To execute further commands, a new \phpseclib\Net\SSH1 object will need to be created.
|
|
|
788 |
*
|
|
|
789 |
* Returns false on failure and the output, otherwise.
|
|
|
790 |
*
|
|
|
791 |
* @see self::interactiveRead()
|
|
|
792 |
* @see self::interactiveWrite()
|
|
|
793 |
* @param string $cmd
|
|
|
794 |
* @return mixed
|
|
|
795 |
* @access public
|
|
|
796 |
*/
|
|
|
797 |
function exec($cmd, $block = true)
|
|
|
798 |
{
|
|
|
799 |
if (!($this->bitmap & self::MASK_LOGIN)) {
|
|
|
800 |
user_error('Operation disallowed prior to login()');
|
|
|
801 |
return false;
|
|
|
802 |
}
|
|
|
803 |
|
|
|
804 |
$data = pack('CNa*', NET_SSH1_CMSG_EXEC_CMD, strlen($cmd), $cmd);
|
|
|
805 |
|
|
|
806 |
if (!$this->_send_binary_packet($data)) {
|
|
|
807 |
user_error('Error sending SSH_CMSG_EXEC_CMD');
|
|
|
808 |
return false;
|
|
|
809 |
}
|
|
|
810 |
|
|
|
811 |
if (!$block) {
|
|
|
812 |
return true;
|
|
|
813 |
}
|
|
|
814 |
|
|
|
815 |
$output = '';
|
|
|
816 |
$response = $this->_get_binary_packet();
|
|
|
817 |
|
|
|
818 |
if ($response !== false) {
|
|
|
819 |
do {
|
|
|
820 |
$output.= substr($response[self::RESPONSE_DATA], 4);
|
|
|
821 |
$response = $this->_get_binary_packet();
|
|
|
822 |
} while (is_array($response) && $response[self::RESPONSE_TYPE] != NET_SSH1_SMSG_EXITSTATUS);
|
|
|
823 |
}
|
|
|
824 |
|
|
|
825 |
$data = pack('C', NET_SSH1_CMSG_EXIT_CONFIRMATION);
|
|
|
826 |
|
|
|
827 |
// i don't think it's really all that important if this packet gets sent or not.
|
|
|
828 |
$this->_send_binary_packet($data);
|
|
|
829 |
|
|
|
830 |
fclose($this->fsock);
|
|
|
831 |
|
|
|
832 |
// reset the execution bitmap - a new \phpseclib\Net\SSH1 object needs to be created.
|
|
|
833 |
$this->bitmap = 0;
|
|
|
834 |
|
|
|
835 |
return $output;
|
|
|
836 |
}
|
|
|
837 |
|
|
|
838 |
/**
|
|
|
839 |
* Creates an interactive shell
|
|
|
840 |
*
|
|
|
841 |
* @see self::interactiveRead()
|
|
|
842 |
* @see self::interactiveWrite()
|
|
|
843 |
* @return bool
|
|
|
844 |
* @access private
|
|
|
845 |
*/
|
|
|
846 |
function _initShell()
|
|
|
847 |
{
|
|
|
848 |
// connect using the sample parameters in protocol-1.5.txt.
|
|
|
849 |
// according to wikipedia.org's entry on text terminals, "the fundamental type of application running on a text
|
|
|
850 |
// terminal is a command line interpreter or shell". thus, opening a terminal session to run the shell.
|
|
|
851 |
$data = pack('CNa*N4C', NET_SSH1_CMSG_REQUEST_PTY, strlen('vt100'), 'vt100', 24, 80, 0, 0, self::TTY_OP_END);
|
|
|
852 |
|
|
|
853 |
if (!$this->_send_binary_packet($data)) {
|
|
|
854 |
user_error('Error sending SSH_CMSG_REQUEST_PTY');
|
|
|
855 |
return false;
|
|
|
856 |
}
|
|
|
857 |
|
|
|
858 |
$response = $this->_get_binary_packet();
|
|
|
859 |
|
|
|
860 |
if ($response === true) {
|
|
|
861 |
return false;
|
|
|
862 |
}
|
|
|
863 |
if ($response[self::RESPONSE_TYPE] != NET_SSH1_SMSG_SUCCESS) {
|
|
|
864 |
user_error('Expected SSH_SMSG_SUCCESS');
|
|
|
865 |
return false;
|
|
|
866 |
}
|
|
|
867 |
|
|
|
868 |
$data = pack('C', NET_SSH1_CMSG_EXEC_SHELL);
|
|
|
869 |
|
|
|
870 |
if (!$this->_send_binary_packet($data)) {
|
|
|
871 |
user_error('Error sending SSH_CMSG_EXEC_SHELL');
|
|
|
872 |
return false;
|
|
|
873 |
}
|
|
|
874 |
|
|
|
875 |
$this->bitmap |= self::MASK_SHELL;
|
|
|
876 |
|
|
|
877 |
//stream_set_blocking($this->fsock, 0);
|
|
|
878 |
|
|
|
879 |
return true;
|
|
|
880 |
}
|
|
|
881 |
|
|
|
882 |
/**
|
|
|
883 |
* Inputs a command into an interactive shell.
|
|
|
884 |
*
|
|
|
885 |
* @see self::interactiveWrite()
|
|
|
886 |
* @param string $cmd
|
|
|
887 |
* @return bool
|
|
|
888 |
* @access public
|
|
|
889 |
*/
|
|
|
890 |
function write($cmd)
|
|
|
891 |
{
|
|
|
892 |
return $this->interactiveWrite($cmd);
|
|
|
893 |
}
|
|
|
894 |
|
|
|
895 |
/**
|
|
|
896 |
* Returns the output of an interactive shell when there's a match for $expect
|
|
|
897 |
*
|
|
|
898 |
* $expect can take the form of a string literal or, if $mode == self::READ__REGEX,
|
|
|
899 |
* a regular expression.
|
|
|
900 |
*
|
|
|
901 |
* @see self::write()
|
|
|
902 |
* @param string $expect
|
|
|
903 |
* @param int $mode
|
|
|
904 |
* @return bool
|
|
|
905 |
* @access public
|
|
|
906 |
*/
|
|
|
907 |
function read($expect, $mode = self::READ__SIMPLE)
|
|
|
908 |
{
|
|
|
909 |
if (!($this->bitmap & self::MASK_LOGIN)) {
|
|
|
910 |
user_error('Operation disallowed prior to login()');
|
|
|
911 |
return false;
|
|
|
912 |
}
|
|
|
913 |
|
|
|
914 |
if (!($this->bitmap & self::MASK_SHELL) && !$this->_initShell()) {
|
|
|
915 |
user_error('Unable to initiate an interactive shell session');
|
|
|
916 |
return false;
|
|
|
917 |
}
|
|
|
918 |
|
|
|
919 |
$match = $expect;
|
|
|
920 |
while (true) {
|
|
|
921 |
if ($mode == self::READ__REGEX) {
|
|
|
922 |
preg_match($expect, $this->interactiveBuffer, $matches);
|
|
|
923 |
$match = isset($matches[0]) ? $matches[0] : '';
|
|
|
924 |
}
|
|
|
925 |
$pos = strlen($match) ? strpos($this->interactiveBuffer, $match) : false;
|
|
|
926 |
if ($pos !== false) {
|
|
|
927 |
return $this->_string_shift($this->interactiveBuffer, $pos + strlen($match));
|
|
|
928 |
}
|
|
|
929 |
$response = $this->_get_binary_packet();
|
|
|
930 |
|
|
|
931 |
if ($response === true) {
|
|
|
932 |
return $this->_string_shift($this->interactiveBuffer, strlen($this->interactiveBuffer));
|
|
|
933 |
}
|
|
|
934 |
$this->interactiveBuffer.= substr($response[self::RESPONSE_DATA], 4);
|
|
|
935 |
}
|
|
|
936 |
}
|
|
|
937 |
|
|
|
938 |
/**
|
|
|
939 |
* Inputs a command into an interactive shell.
|
|
|
940 |
*
|
|
|
941 |
* @see self::interactiveRead()
|
|
|
942 |
* @param string $cmd
|
|
|
943 |
* @return bool
|
|
|
944 |
* @access public
|
|
|
945 |
*/
|
|
|
946 |
function interactiveWrite($cmd)
|
|
|
947 |
{
|
|
|
948 |
if (!($this->bitmap & self::MASK_LOGIN)) {
|
|
|
949 |
user_error('Operation disallowed prior to login()');
|
|
|
950 |
return false;
|
|
|
951 |
}
|
|
|
952 |
|
|
|
953 |
if (!($this->bitmap & self::MASK_SHELL) && !$this->_initShell()) {
|
|
|
954 |
user_error('Unable to initiate an interactive shell session');
|
|
|
955 |
return false;
|
|
|
956 |
}
|
|
|
957 |
|
|
|
958 |
$data = pack('CNa*', NET_SSH1_CMSG_STDIN_DATA, strlen($cmd), $cmd);
|
|
|
959 |
|
|
|
960 |
if (!$this->_send_binary_packet($data)) {
|
|
|
961 |
user_error('Error sending SSH_CMSG_STDIN');
|
|
|
962 |
return false;
|
|
|
963 |
}
|
|
|
964 |
|
|
|
965 |
return true;
|
|
|
966 |
}
|
|
|
967 |
|
|
|
968 |
/**
|
|
|
969 |
* Returns the output of an interactive shell when no more output is available.
|
|
|
970 |
*
|
|
|
971 |
* Requires PHP 4.3.0 or later due to the use of the stream_select() function. If you see stuff like
|
|
|
972 |
* "^[[00m", you're seeing ANSI escape codes. According to
|
|
|
973 |
* {@link http://support.microsoft.com/kb/101875 How to Enable ANSI.SYS in a Command Window}, "Windows NT
|
|
|
974 |
* does not support ANSI escape sequences in Win32 Console applications", so if you're a Windows user,
|
|
|
975 |
* there's not going to be much recourse.
|
|
|
976 |
*
|
|
|
977 |
* @see self::interactiveRead()
|
|
|
978 |
* @return string
|
|
|
979 |
* @access public
|
|
|
980 |
*/
|
|
|
981 |
function interactiveRead()
|
|
|
982 |
{
|
|
|
983 |
if (!($this->bitmap & self::MASK_LOGIN)) {
|
|
|
984 |
user_error('Operation disallowed prior to login()');
|
|
|
985 |
return false;
|
|
|
986 |
}
|
|
|
987 |
|
|
|
988 |
if (!($this->bitmap & self::MASK_SHELL) && !$this->_initShell()) {
|
|
|
989 |
user_error('Unable to initiate an interactive shell session');
|
|
|
990 |
return false;
|
|
|
991 |
}
|
|
|
992 |
|
|
|
993 |
$read = array($this->fsock);
|
|
|
994 |
$write = $except = null;
|
|
|
995 |
if (stream_select($read, $write, $except, 0)) {
|
|
|
996 |
$response = $this->_get_binary_packet();
|
|
|
997 |
return substr($response[self::RESPONSE_DATA], 4);
|
|
|
998 |
} else {
|
|
|
999 |
return '';
|
|
|
1000 |
}
|
|
|
1001 |
}
|
|
|
1002 |
|
|
|
1003 |
/**
|
|
|
1004 |
* Disconnect
|
|
|
1005 |
*
|
|
|
1006 |
* @access public
|
|
|
1007 |
*/
|
|
|
1008 |
function disconnect()
|
|
|
1009 |
{
|
|
|
1010 |
$this->_disconnect();
|
|
|
1011 |
}
|
|
|
1012 |
|
|
|
1013 |
/**
|
|
|
1014 |
* Destructor.
|
|
|
1015 |
*
|
|
|
1016 |
* Will be called, automatically, if you're supporting just PHP5. If you're supporting PHP4, you'll need to call
|
|
|
1017 |
* disconnect().
|
|
|
1018 |
*
|
|
|
1019 |
* @access public
|
|
|
1020 |
*/
|
|
|
1021 |
function __destruct()
|
|
|
1022 |
{
|
|
|
1023 |
$this->_disconnect();
|
|
|
1024 |
}
|
|
|
1025 |
|
|
|
1026 |
/**
|
|
|
1027 |
* Disconnect
|
|
|
1028 |
*
|
|
|
1029 |
* @param string $msg
|
|
|
1030 |
* @access private
|
|
|
1031 |
*/
|
|
|
1032 |
function _disconnect($msg = 'Client Quit')
|
|
|
1033 |
{
|
|
|
1034 |
if ($this->bitmap) {
|
|
|
1035 |
$data = pack('C', NET_SSH1_CMSG_EOF);
|
|
|
1036 |
$this->_send_binary_packet($data);
|
|
|
1037 |
/*
|
|
|
1038 |
$response = $this->_get_binary_packet();
|
|
|
1039 |
if ($response === true) {
|
|
|
1040 |
$response = array(self::RESPONSE_TYPE => -1);
|
|
|
1041 |
}
|
|
|
1042 |
switch ($response[self::RESPONSE_TYPE]) {
|
|
|
1043 |
case NET_SSH1_SMSG_EXITSTATUS:
|
|
|
1044 |
$data = pack('C', NET_SSH1_CMSG_EXIT_CONFIRMATION);
|
|
|
1045 |
break;
|
|
|
1046 |
default:
|
|
|
1047 |
$data = pack('CNa*', NET_SSH1_MSG_DISCONNECT, strlen($msg), $msg);
|
|
|
1048 |
}
|
|
|
1049 |
*/
|
|
|
1050 |
$data = pack('CNa*', NET_SSH1_MSG_DISCONNECT, strlen($msg), $msg);
|
|
|
1051 |
|
|
|
1052 |
$this->_send_binary_packet($data);
|
|
|
1053 |
fclose($this->fsock);
|
|
|
1054 |
$this->bitmap = 0;
|
|
|
1055 |
}
|
|
|
1056 |
}
|
|
|
1057 |
|
|
|
1058 |
/**
|
|
|
1059 |
* Gets Binary Packets
|
|
|
1060 |
*
|
|
|
1061 |
* See 'The Binary Packet Protocol' of protocol-1.5.txt for more info.
|
|
|
1062 |
*
|
|
|
1063 |
* Also, this function could be improved upon by adding detection for the following exploit:
|
|
|
1064 |
* http://www.securiteam.com/securitynews/5LP042K3FY.html
|
|
|
1065 |
*
|
|
|
1066 |
* @see self::_send_binary_packet()
|
|
|
1067 |
* @return array
|
|
|
1068 |
* @access private
|
|
|
1069 |
*/
|
|
|
1070 |
function _get_binary_packet()
|
|
|
1071 |
{
|
|
|
1072 |
if (feof($this->fsock)) {
|
|
|
1073 |
//user_error('connection closed prematurely');
|
|
|
1074 |
return false;
|
|
|
1075 |
}
|
|
|
1076 |
|
|
|
1077 |
if ($this->curTimeout) {
|
|
|
1078 |
$read = array($this->fsock);
|
|
|
1079 |
$write = $except = null;
|
|
|
1080 |
|
|
|
1081 |
$start = strtok(microtime(), ' ') + strtok(''); // http://php.net/microtime#61838
|
|
|
1082 |
$sec = floor($this->curTimeout);
|
|
|
1083 |
$usec = 1000000 * ($this->curTimeout - $sec);
|
|
|
1084 |
// on windows this returns a "Warning: Invalid CRT parameters detected" error
|
|
|
1085 |
if (!@stream_select($read, $write, $except, $sec, $usec) && !count($read)) {
|
|
|
1086 |
//$this->_disconnect('Timeout');
|
|
|
1087 |
return true;
|
|
|
1088 |
}
|
|
|
1089 |
$elapsed = strtok(microtime(), ' ') + strtok('') - $start;
|
|
|
1090 |
$this->curTimeout-= $elapsed;
|
|
|
1091 |
}
|
|
|
1092 |
|
|
|
1093 |
$start = strtok(microtime(), ' ') + strtok(''); // http://php.net/microtime#61838
|
|
|
1094 |
$temp = unpack('Nlength', fread($this->fsock, 4));
|
|
|
1095 |
|
|
|
1096 |
$padding_length = 8 - ($temp['length'] & 7);
|
|
|
1097 |
$length = $temp['length'] + $padding_length;
|
|
|
1098 |
$raw = '';
|
|
|
1099 |
|
|
|
1100 |
while ($length > 0) {
|
|
|
1101 |
$temp = fread($this->fsock, $length);
|
|
|
1102 |
$raw.= $temp;
|
|
|
1103 |
$length-= strlen($temp);
|
|
|
1104 |
}
|
|
|
1105 |
$stop = strtok(microtime(), ' ') + strtok('');
|
|
|
1106 |
|
|
|
1107 |
if (strlen($raw) && $this->crypto !== false) {
|
|
|
1108 |
$raw = $this->crypto->decrypt($raw);
|
|
|
1109 |
}
|
|
|
1110 |
|
|
|
1111 |
$padding = substr($raw, 0, $padding_length);
|
|
|
1112 |
$type = $raw[$padding_length];
|
|
|
1113 |
$data = substr($raw, $padding_length + 1, -4);
|
|
|
1114 |
|
|
|
1115 |
$temp = unpack('Ncrc', substr($raw, -4));
|
|
|
1116 |
|
|
|
1117 |
//if ( $temp['crc'] != $this->_crc($padding . $type . $data) ) {
|
|
|
1118 |
// user_error('Bad CRC in packet from server');
|
|
|
1119 |
// return false;
|
|
|
1120 |
//}
|
|
|
1121 |
|
|
|
1122 |
$type = ord($type);
|
|
|
1123 |
|
|
|
1124 |
if (defined('NET_SSH1_LOGGING')) {
|
|
|
1125 |
$temp = isset($this->protocol_flags[$type]) ? $this->protocol_flags[$type] : 'UNKNOWN';
|
|
|
1126 |
$temp = '<- ' . $temp .
|
|
|
1127 |
' (' . round($stop - $start, 4) . 's)';
|
|
|
1128 |
$this->_append_log($temp, $data);
|
|
|
1129 |
}
|
|
|
1130 |
|
|
|
1131 |
return array(
|
|
|
1132 |
self::RESPONSE_TYPE => $type,
|
|
|
1133 |
self::RESPONSE_DATA => $data
|
|
|
1134 |
);
|
|
|
1135 |
}
|
|
|
1136 |
|
|
|
1137 |
/**
|
|
|
1138 |
* Sends Binary Packets
|
|
|
1139 |
*
|
|
|
1140 |
* Returns true on success, false on failure.
|
|
|
1141 |
*
|
|
|
1142 |
* @see self::_get_binary_packet()
|
|
|
1143 |
* @param string $data
|
|
|
1144 |
* @return bool
|
|
|
1145 |
* @access private
|
|
|
1146 |
*/
|
|
|
1147 |
function _send_binary_packet($data)
|
|
|
1148 |
{
|
|
|
1149 |
if (feof($this->fsock)) {
|
|
|
1150 |
//user_error('connection closed prematurely');
|
|
|
1151 |
return false;
|
|
|
1152 |
}
|
|
|
1153 |
|
|
|
1154 |
$length = strlen($data) + 4;
|
|
|
1155 |
|
|
|
1156 |
$padding = Random::string(8 - ($length & 7));
|
|
|
1157 |
|
|
|
1158 |
$orig = $data;
|
|
|
1159 |
$data = $padding . $data;
|
|
|
1160 |
$data.= pack('N', $this->_crc($data));
|
|
|
1161 |
|
|
|
1162 |
if ($this->crypto !== false) {
|
|
|
1163 |
$data = $this->crypto->encrypt($data);
|
|
|
1164 |
}
|
|
|
1165 |
|
|
|
1166 |
$packet = pack('Na*', $length, $data);
|
|
|
1167 |
|
|
|
1168 |
$start = strtok(microtime(), ' ') + strtok(''); // http://php.net/microtime#61838
|
|
|
1169 |
$result = strlen($packet) == fputs($this->fsock, $packet);
|
|
|
1170 |
$stop = strtok(microtime(), ' ') + strtok('');
|
|
|
1171 |
|
|
|
1172 |
if (defined('NET_SSH1_LOGGING')) {
|
|
|
1173 |
$temp = isset($this->protocol_flags[ord($orig[0])]) ? $this->protocol_flags[ord($orig[0])] : 'UNKNOWN';
|
|
|
1174 |
$temp = '-> ' . $temp .
|
|
|
1175 |
' (' . round($stop - $start, 4) . 's)';
|
|
|
1176 |
$this->_append_log($temp, $orig);
|
|
|
1177 |
}
|
|
|
1178 |
|
|
|
1179 |
return $result;
|
|
|
1180 |
}
|
|
|
1181 |
|
|
|
1182 |
/**
|
|
|
1183 |
* Cyclic Redundancy Check (CRC)
|
|
|
1184 |
*
|
|
|
1185 |
* PHP's crc32 function is implemented slightly differently than the one that SSH v1 uses, so
|
|
|
1186 |
* we've reimplemented it. A more detailed discussion of the differences can be found after
|
|
|
1187 |
* $crc_lookup_table's initialization.
|
|
|
1188 |
*
|
|
|
1189 |
* @see self::_get_binary_packet()
|
|
|
1190 |
* @see self::_send_binary_packet()
|
|
|
1191 |
* @param string $data
|
|
|
1192 |
* @return int
|
|
|
1193 |
* @access private
|
|
|
1194 |
*/
|
|
|
1195 |
function _crc($data)
|
|
|
1196 |
{
|
|
|
1197 |
static $crc_lookup_table = array(
|
|
|
1198 |
0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA,
|
|
|
1199 |
0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3,
|
|
|
1200 |
0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988,
|
|
|
1201 |
0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91,
|
|
|
1202 |
0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE,
|
|
|
1203 |
0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7,
|
|
|
1204 |
0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC,
|
|
|
1205 |
0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5,
|
|
|
1206 |
0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172,
|
|
|
1207 |
0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B,
|
|
|
1208 |
0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940,
|
|
|
1209 |
0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59,
|
|
|
1210 |
0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116,
|
|
|
1211 |
0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F,
|
|
|
1212 |
0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924,
|
|
|
1213 |
0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D,
|
|
|
1214 |
0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A,
|
|
|
1215 |
0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433,
|
|
|
1216 |
0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818,
|
|
|
1217 |
0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01,
|
|
|
1218 |
0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E,
|
|
|
1219 |
0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457,
|
|
|
1220 |
0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C,
|
|
|
1221 |
0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65,
|
|
|
1222 |
0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2,
|
|
|
1223 |
0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB,
|
|
|
1224 |
0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0,
|
|
|
1225 |
0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9,
|
|
|
1226 |
0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086,
|
|
|
1227 |
0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F,
|
|
|
1228 |
0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4,
|
|
|
1229 |
0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD,
|
|
|
1230 |
0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A,
|
|
|
1231 |
0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683,
|
|
|
1232 |
0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8,
|
|
|
1233 |
0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1,
|
|
|
1234 |
0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE,
|
|
|
1235 |
0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7,
|
|
|
1236 |
0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC,
|
|
|
1237 |
0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5,
|
|
|
1238 |
0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252,
|
|
|
1239 |
0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B,
|
|
|
1240 |
0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60,
|
|
|
1241 |
0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79,
|
|
|
1242 |
0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236,
|
|
|
1243 |
0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F,
|
|
|
1244 |
0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04,
|
|
|
1245 |
0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D,
|
|
|
1246 |
0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A,
|
|
|
1247 |
0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713,
|
|
|
1248 |
0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38,
|
|
|
1249 |
0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21,
|
|
|
1250 |
0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E,
|
|
|
1251 |
0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777,
|
|
|
1252 |
0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C,
|
|
|
1253 |
0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45,
|
|
|
1254 |
0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2,
|
|
|
1255 |
0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB,
|
|
|
1256 |
0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0,
|
|
|
1257 |
0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9,
|
|
|
1258 |
0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6,
|
|
|
1259 |
0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF,
|
|
|
1260 |
0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94,
|
|
|
1261 |
0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D
|
|
|
1262 |
);
|
|
|
1263 |
|
|
|
1264 |
// For this function to yield the same output as PHP's crc32 function, $crc would have to be
|
|
|
1265 |
// set to 0xFFFFFFFF, initially - not 0x00000000 as it currently is.
|
|
|
1266 |
$crc = 0x00000000;
|
|
|
1267 |
$length = strlen($data);
|
|
|
1268 |
|
|
|
1269 |
for ($i=0; $i<$length; $i++) {
|
|
|
1270 |
// We AND $crc >> 8 with 0x00FFFFFF because we want the eight newly added bits to all
|
|
|
1271 |
// be zero. PHP, unfortunately, doesn't always do this. 0x80000000 >> 8, as an example,
|
|
|
1272 |
// yields 0xFF800000 - not 0x00800000. The following link elaborates:
|
|
|
1273 |
// http://www.php.net/manual/en/language.operators.bitwise.php#57281
|
|
|
1274 |
$crc = (($crc >> 8) & 0x00FFFFFF) ^ $crc_lookup_table[($crc & 0xFF) ^ ord($data[$i])];
|
|
|
1275 |
}
|
|
|
1276 |
|
|
|
1277 |
// In addition to having to set $crc to 0xFFFFFFFF, initially, the return value must be XOR'd with
|
|
|
1278 |
// 0xFFFFFFFF for this function to return the same thing that PHP's crc32 function would.
|
|
|
1279 |
return $crc;
|
|
|
1280 |
}
|
|
|
1281 |
|
|
|
1282 |
/**
|
|
|
1283 |
* String Shift
|
|
|
1284 |
*
|
|
|
1285 |
* Inspired by array_shift
|
|
|
1286 |
*
|
|
|
1287 |
* @param string $string
|
|
|
1288 |
* @param int $index
|
|
|
1289 |
* @return string
|
|
|
1290 |
* @access private
|
|
|
1291 |
*/
|
|
|
1292 |
function _string_shift(&$string, $index = 1)
|
|
|
1293 |
{
|
|
|
1294 |
$substr = substr($string, 0, $index);
|
|
|
1295 |
$string = substr($string, $index);
|
|
|
1296 |
return $substr;
|
|
|
1297 |
}
|
|
|
1298 |
|
|
|
1299 |
/**
|
|
|
1300 |
* RSA Encrypt
|
|
|
1301 |
*
|
|
|
1302 |
* Returns mod(pow($m, $e), $n), where $n should be the product of two (large) primes $p and $q and where $e
|
|
|
1303 |
* should be a number with the property that gcd($e, ($p - 1) * ($q - 1)) == 1. Could just make anything that
|
|
|
1304 |
* calls this call modexp, instead, but I think this makes things clearer, maybe...
|
|
|
1305 |
*
|
|
|
1306 |
* @see self::__construct()
|
|
|
1307 |
* @param BigInteger $m
|
|
|
1308 |
* @param array $key
|
|
|
1309 |
* @return BigInteger
|
|
|
1310 |
* @access private
|
|
|
1311 |
*/
|
|
|
1312 |
function _rsa_crypt($m, $key)
|
|
|
1313 |
{
|
|
|
1314 |
/*
|
|
|
1315 |
$rsa = new RSA();
|
|
|
1316 |
$rsa->loadKey($key, RSA::PUBLIC_FORMAT_RAW);
|
|
|
1317 |
$rsa->setEncryptionMode(RSA::ENCRYPTION_PKCS1);
|
|
|
1318 |
return $rsa->encrypt($m);
|
|
|
1319 |
*/
|
|
|
1320 |
|
|
|
1321 |
// To quote from protocol-1.5.txt:
|
|
|
1322 |
// The most significant byte (which is only partial as the value must be
|
|
|
1323 |
// less than the public modulus, which is never a power of two) is zero.
|
|
|
1324 |
//
|
|
|
1325 |
// The next byte contains the value 2 (which stands for public-key
|
|
|
1326 |
// encrypted data in the PKCS standard [PKCS#1]). Then, there are non-
|
|
|
1327 |
// zero random bytes to fill any unused space, a zero byte, and the data
|
|
|
1328 |
// to be encrypted in the least significant bytes, the last byte of the
|
|
|
1329 |
// data in the least significant byte.
|
|
|
1330 |
|
|
|
1331 |
// Presumably the part of PKCS#1 they're refering to is "Section 7.2.1 Encryption Operation",
|
|
|
1332 |
// under "7.2 RSAES-PKCS1-v1.5" and "7 Encryption schemes" of the following URL:
|
|
|
1333 |
// ftp://ftp.rsasecurity.com/pub/pkcs/pkcs-1/pkcs-1v2-1.pdf
|
|
|
1334 |
$modulus = $key[1]->toBytes();
|
|
|
1335 |
$length = strlen($modulus) - strlen($m) - 3;
|
|
|
1336 |
$random = '';
|
|
|
1337 |
while (strlen($random) != $length) {
|
|
|
1338 |
$block = Random::string($length - strlen($random));
|
|
|
1339 |
$block = str_replace("\x00", '', $block);
|
|
|
1340 |
$random.= $block;
|
|
|
1341 |
}
|
|
|
1342 |
$temp = chr(0) . chr(2) . $random . chr(0) . $m;
|
|
|
1343 |
|
|
|
1344 |
$m = new BigInteger($temp, 256);
|
|
|
1345 |
$m = $m->modPow($key[0], $key[1]);
|
|
|
1346 |
|
|
|
1347 |
return $m->toBytes();
|
|
|
1348 |
}
|
|
|
1349 |
|
|
|
1350 |
/**
|
|
|
1351 |
* Define Array
|
|
|
1352 |
*
|
|
|
1353 |
* Takes any number of arrays whose indices are integers and whose values are strings and defines a bunch of
|
|
|
1354 |
* named constants from it, using the value as the name of the constant and the index as the value of the constant.
|
|
|
1355 |
* If any of the constants that would be defined already exists, none of the constants will be defined.
|
|
|
1356 |
*
|
|
|
1357 |
* @param array $array
|
|
|
1358 |
* @access private
|
|
|
1359 |
*/
|
|
|
1360 |
function _define_array()
|
|
|
1361 |
{
|
|
|
1362 |
$args = func_get_args();
|
|
|
1363 |
foreach ($args as $arg) {
|
|
|
1364 |
foreach ($arg as $key => $value) {
|
|
|
1365 |
if (!defined($value)) {
|
|
|
1366 |
define($value, $key);
|
|
|
1367 |
} else {
|
|
|
1368 |
break 2;
|
|
|
1369 |
}
|
|
|
1370 |
}
|
|
|
1371 |
}
|
|
|
1372 |
}
|
|
|
1373 |
|
|
|
1374 |
/**
|
|
|
1375 |
* Returns a log of the packets that have been sent and received.
|
|
|
1376 |
*
|
|
|
1377 |
* 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')
|
|
|
1378 |
*
|
|
|
1379 |
* @access public
|
|
|
1380 |
* @return array|false|string
|
|
|
1381 |
*/
|
|
|
1382 |
function getLog()
|
|
|
1383 |
{
|
|
|
1384 |
if (!defined('NET_SSH1_LOGGING')) {
|
|
|
1385 |
return false;
|
|
|
1386 |
}
|
|
|
1387 |
|
|
|
1388 |
switch (NET_SSH1_LOGGING) {
|
|
|
1389 |
case self::LOG_SIMPLE:
|
|
|
1390 |
return $this->message_number_log;
|
|
|
1391 |
break;
|
|
|
1392 |
case self::LOG_COMPLEX:
|
|
|
1393 |
return $this->_format_log($this->message_log, $this->protocol_flags_log);
|
|
|
1394 |
break;
|
|
|
1395 |
default:
|
|
|
1396 |
return false;
|
|
|
1397 |
}
|
|
|
1398 |
}
|
|
|
1399 |
|
|
|
1400 |
/**
|
|
|
1401 |
* Formats a log for printing
|
|
|
1402 |
*
|
|
|
1403 |
* @param array $message_log
|
|
|
1404 |
* @param array $message_number_log
|
|
|
1405 |
* @access private
|
|
|
1406 |
* @return string
|
|
|
1407 |
*/
|
|
|
1408 |
function _format_log($message_log, $message_number_log)
|
|
|
1409 |
{
|
|
|
1410 |
$output = '';
|
|
|
1411 |
for ($i = 0; $i < count($message_log); $i++) {
|
|
|
1412 |
$output.= $message_number_log[$i] . "\r\n";
|
|
|
1413 |
$current_log = $message_log[$i];
|
|
|
1414 |
$j = 0;
|
|
|
1415 |
do {
|
|
|
1416 |
if (strlen($current_log)) {
|
|
|
1417 |
$output.= str_pad(dechex($j), 7, '0', STR_PAD_LEFT) . '0 ';
|
|
|
1418 |
}
|
|
|
1419 |
$fragment = $this->_string_shift($current_log, $this->log_short_width);
|
|
|
1420 |
$hex = substr(preg_replace_callback('#.#s', array($this, '_format_log_helper'), $fragment), strlen($this->log_boundary));
|
|
|
1421 |
// replace non ASCII printable characters with dots
|
|
|
1422 |
// http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters
|
|
|
1423 |
// also replace < with a . since < messes up the output on web browsers
|
|
|
1424 |
$raw = preg_replace('#[^\x20-\x7E]|<#', '.', $fragment);
|
|
|
1425 |
$output.= str_pad($hex, $this->log_long_width - $this->log_short_width, ' ') . $raw . "\r\n";
|
|
|
1426 |
$j++;
|
|
|
1427 |
} while (strlen($current_log));
|
|
|
1428 |
$output.= "\r\n";
|
|
|
1429 |
}
|
|
|
1430 |
|
|
|
1431 |
return $output;
|
|
|
1432 |
}
|
|
|
1433 |
|
|
|
1434 |
/**
|
|
|
1435 |
* Helper function for _format_log
|
|
|
1436 |
*
|
|
|
1437 |
* For use with preg_replace_callback()
|
|
|
1438 |
*
|
|
|
1439 |
* @param array $matches
|
|
|
1440 |
* @access private
|
|
|
1441 |
* @return string
|
|
|
1442 |
*/
|
|
|
1443 |
function _format_log_helper($matches)
|
|
|
1444 |
{
|
|
|
1445 |
return $this->log_boundary . str_pad(dechex(ord($matches[0])), 2, '0', STR_PAD_LEFT);
|
|
|
1446 |
}
|
|
|
1447 |
|
|
|
1448 |
/**
|
|
|
1449 |
* Return the server key public exponent
|
|
|
1450 |
*
|
|
|
1451 |
* Returns, by default, the base-10 representation. If $raw_output is set to true, returns, instead,
|
|
|
1452 |
* the raw bytes. This behavior is similar to PHP's md5() function.
|
|
|
1453 |
*
|
|
|
1454 |
* @param bool $raw_output
|
|
|
1455 |
* @return string
|
|
|
1456 |
* @access public
|
|
|
1457 |
*/
|
|
|
1458 |
function getServerKeyPublicExponent($raw_output = false)
|
|
|
1459 |
{
|
|
|
1460 |
return $raw_output ? $this->server_key_public_exponent->toBytes() : $this->server_key_public_exponent->toString();
|
|
|
1461 |
}
|
|
|
1462 |
|
|
|
1463 |
/**
|
|
|
1464 |
* Return the server key public modulus
|
|
|
1465 |
*
|
|
|
1466 |
* Returns, by default, the base-10 representation. If $raw_output is set to true, returns, instead,
|
|
|
1467 |
* the raw bytes. This behavior is similar to PHP's md5() function.
|
|
|
1468 |
*
|
|
|
1469 |
* @param bool $raw_output
|
|
|
1470 |
* @return string
|
|
|
1471 |
* @access public
|
|
|
1472 |
*/
|
|
|
1473 |
function getServerKeyPublicModulus($raw_output = false)
|
|
|
1474 |
{
|
|
|
1475 |
return $raw_output ? $this->server_key_public_modulus->toBytes() : $this->server_key_public_modulus->toString();
|
|
|
1476 |
}
|
|
|
1477 |
|
|
|
1478 |
/**
|
|
|
1479 |
* Return the host key public exponent
|
|
|
1480 |
*
|
|
|
1481 |
* Returns, by default, the base-10 representation. If $raw_output is set to true, returns, instead,
|
|
|
1482 |
* the raw bytes. This behavior is similar to PHP's md5() function.
|
|
|
1483 |
*
|
|
|
1484 |
* @param bool $raw_output
|
|
|
1485 |
* @return string
|
|
|
1486 |
* @access public
|
|
|
1487 |
*/
|
|
|
1488 |
function getHostKeyPublicExponent($raw_output = false)
|
|
|
1489 |
{
|
|
|
1490 |
return $raw_output ? $this->host_key_public_exponent->toBytes() : $this->host_key_public_exponent->toString();
|
|
|
1491 |
}
|
|
|
1492 |
|
|
|
1493 |
/**
|
|
|
1494 |
* Return the host key public modulus
|
|
|
1495 |
*
|
|
|
1496 |
* Returns, by default, the base-10 representation. If $raw_output is set to true, returns, instead,
|
|
|
1497 |
* the raw bytes. This behavior is similar to PHP's md5() function.
|
|
|
1498 |
*
|
|
|
1499 |
* @param bool $raw_output
|
|
|
1500 |
* @return string
|
|
|
1501 |
* @access public
|
|
|
1502 |
*/
|
|
|
1503 |
function getHostKeyPublicModulus($raw_output = false)
|
|
|
1504 |
{
|
|
|
1505 |
return $raw_output ? $this->host_key_public_modulus->toBytes() : $this->host_key_public_modulus->toString();
|
|
|
1506 |
}
|
|
|
1507 |
|
|
|
1508 |
/**
|
|
|
1509 |
* Return a list of ciphers supported by SSH1 server.
|
|
|
1510 |
*
|
|
|
1511 |
* Just because a cipher is supported by an SSH1 server doesn't mean it's supported by this library. If $raw_output
|
|
|
1512 |
* is set to true, returns, instead, an array of constants. ie. instead of array('Triple-DES in CBC mode'), you'll
|
|
|
1513 |
* get array(self::CIPHER_3DES).
|
|
|
1514 |
*
|
|
|
1515 |
* @param bool $raw_output
|
|
|
1516 |
* @return array
|
|
|
1517 |
* @access public
|
|
|
1518 |
*/
|
|
|
1519 |
function getSupportedCiphers($raw_output = false)
|
|
|
1520 |
{
|
|
|
1521 |
return $raw_output ? array_keys($this->supported_ciphers) : array_values($this->supported_ciphers);
|
|
|
1522 |
}
|
|
|
1523 |
|
|
|
1524 |
/**
|
|
|
1525 |
* Return a list of authentications supported by SSH1 server.
|
|
|
1526 |
*
|
|
|
1527 |
* Just because a cipher is supported by an SSH1 server doesn't mean it's supported by this library. If $raw_output
|
|
|
1528 |
* is set to true, returns, instead, an array of constants. ie. instead of array('password authentication'), you'll
|
|
|
1529 |
* get array(self::AUTH_PASSWORD).
|
|
|
1530 |
*
|
|
|
1531 |
* @param bool $raw_output
|
|
|
1532 |
* @return array
|
|
|
1533 |
* @access public
|
|
|
1534 |
*/
|
|
|
1535 |
function getSupportedAuthentications($raw_output = false)
|
|
|
1536 |
{
|
|
|
1537 |
return $raw_output ? array_keys($this->supported_authentications) : array_values($this->supported_authentications);
|
|
|
1538 |
}
|
|
|
1539 |
|
|
|
1540 |
/**
|
|
|
1541 |
* Return the server identification.
|
|
|
1542 |
*
|
|
|
1543 |
* @return string
|
|
|
1544 |
* @access public
|
|
|
1545 |
*/
|
|
|
1546 |
function getServerIdentification()
|
|
|
1547 |
{
|
|
|
1548 |
return rtrim($this->server_identification);
|
|
|
1549 |
}
|
|
|
1550 |
|
|
|
1551 |
/**
|
|
|
1552 |
* Logs data packets
|
|
|
1553 |
*
|
|
|
1554 |
* Makes sure that only the last 1MB worth of packets will be logged
|
|
|
1555 |
*
|
|
|
1556 |
* @param string $data
|
|
|
1557 |
* @access private
|
|
|
1558 |
*/
|
|
|
1559 |
function _append_log($protocol_flags, $message)
|
|
|
1560 |
{
|
|
|
1561 |
switch (NET_SSH1_LOGGING) {
|
|
|
1562 |
// useful for benchmarks
|
|
|
1563 |
case self::LOG_SIMPLE:
|
|
|
1564 |
$this->protocol_flags_log[] = $protocol_flags;
|
|
|
1565 |
break;
|
|
|
1566 |
// the most useful log for SSH1
|
|
|
1567 |
case self::LOG_COMPLEX:
|
|
|
1568 |
$this->protocol_flags_log[] = $protocol_flags;
|
|
|
1569 |
$this->_string_shift($message);
|
|
|
1570 |
$this->log_size+= strlen($message);
|
|
|
1571 |
$this->message_log[] = $message;
|
|
|
1572 |
while ($this->log_size > self::LOG_MAX_SIZE) {
|
|
|
1573 |
$this->log_size-= strlen(array_shift($this->message_log));
|
|
|
1574 |
array_shift($this->protocol_flags_log);
|
|
|
1575 |
}
|
|
|
1576 |
break;
|
|
|
1577 |
// dump the output out realtime; packets may be interspersed with non packets,
|
|
|
1578 |
// passwords won't be filtered out and select other packets may not be correctly
|
|
|
1579 |
// identified
|
|
|
1580 |
case self::LOG_REALTIME:
|
|
|
1581 |
echo "<pre>\r\n" . $this->_format_log(array($message), array($protocol_flags)) . "\r\n</pre>\r\n";
|
|
|
1582 |
@flush();
|
|
|
1583 |
@ob_flush();
|
|
|
1584 |
break;
|
|
|
1585 |
// basically the same thing as self::LOG_REALTIME with the caveat that self::LOG_REALTIME_FILE
|
|
|
1586 |
// needs to be defined and that the resultant log file will be capped out at self::LOG_MAX_SIZE.
|
|
|
1587 |
// the earliest part of the log file is denoted by the first <<< START >>> and is not going to necessarily
|
|
|
1588 |
// at the beginning of the file
|
|
|
1589 |
case self::LOG_REALTIME_FILE:
|
|
|
1590 |
if (!isset($this->realtime_log_file)) {
|
|
|
1591 |
// PHP doesn't seem to like using constants in fopen()
|
|
|
1592 |
$filename = self::LOG_REALTIME_FILE;
|
|
|
1593 |
$fp = fopen($filename, 'w');
|
|
|
1594 |
$this->realtime_log_file = $fp;
|
|
|
1595 |
}
|
|
|
1596 |
if (!is_resource($this->realtime_log_file)) {
|
|
|
1597 |
break;
|
|
|
1598 |
}
|
|
|
1599 |
$entry = $this->_format_log(array($message), array($protocol_flags));
|
|
|
1600 |
if ($this->realtime_log_wrap) {
|
|
|
1601 |
$temp = "<<< START >>>\r\n";
|
|
|
1602 |
$entry.= $temp;
|
|
|
1603 |
fseek($this->realtime_log_file, ftell($this->realtime_log_file) - strlen($temp));
|
|
|
1604 |
}
|
|
|
1605 |
$this->realtime_log_size+= strlen($entry);
|
|
|
1606 |
if ($this->realtime_log_size > self::LOG_MAX_SIZE) {
|
|
|
1607 |
fseek($this->realtime_log_file, 0);
|
|
|
1608 |
$this->realtime_log_size = strlen($entry);
|
|
|
1609 |
$this->realtime_log_wrap = true;
|
|
|
1610 |
}
|
|
|
1611 |
fputs($this->realtime_log_file, $entry);
|
|
|
1612 |
}
|
|
|
1613 |
}
|
|
|
1614 |
}
|