| <?php |
| /* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */ |
| |
| /** |
| * Pure-PHP implementation of SSHv1. |
| * |
| * PHP versions 4 and 5 |
| * |
| * Here's a short example of how to use this library: |
| * <code> |
| * <?php |
| * include('Net/SSH1.php'); |
| * |
| * $ssh = new Net_SSH1('www.domain.tld'); |
| * if (!$ssh->login('username', 'password')) { |
| * exit('Login Failed'); |
| * } |
| * |
| * echo $ssh->exec('ls -la'); |
| * ?> |
| * </code> |
| * |
| * Here's another short example: |
| * <code> |
| * <?php |
| * include('Net/SSH1.php'); |
| * |
| * $ssh = new Net_SSH1('www.domain.tld'); |
| * if (!$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}. |
| * |
| * LICENSE: Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to deal |
| * in the Software without restriction, including without limitation the rights |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| * THE SOFTWARE. |
| * |
| * @category Net |
| * @package Net_SSH1 |
| * @author Jim Wigginton <terrafrost@php.net> |
| * @copyright MMVII Jim Wigginton |
| * @license http://www.opensource.org/licenses/mit-license.html MIT License |
| * @version $Id: SSH1.php,v 1.15 2010/03/22 22:01:38 terrafrost Exp $ |
| * @link http://phpseclib.sourceforge.net |
| */ |
| |
| /** |
| * Include Math_BigInteger |
| * |
| * Used to do RSA encryption. |
| */ |
| require_once('Math/BigInteger.php'); |
| |
| /** |
| * Include Crypt_Null |
| */ |
| //require_once('Crypt/Null.php'); |
| |
| /** |
| * Include Crypt_DES |
| */ |
| require_once('Crypt/DES.php'); |
| |
| /** |
| * Include Crypt_TripleDES |
| */ |
| require_once('Crypt/TripleDES.php'); |
| |
| /** |
| * Include Crypt_RC4 |
| */ |
| require_once('Crypt/RC4.php'); |
| |
| /** |
| * Include Crypt_Random |
| */ |
| require_once('Crypt/Random.php'); |
| |
| /**#@+ |
| * Encryption Methods |
| * |
| * @see Net_SSH1::getSupportedCiphers() |
| * @access public |
| */ |
| /** |
| * No encryption |
| * |
| * Not supported. |
| */ |
| define('NET_SSH1_CIPHER_NONE', 0); |
| /** |
| * IDEA in CFB mode |
| * |
| * Not supported. |
| */ |
| define('NET_SSH1_CIPHER_IDEA', 1); |
| /** |
| * DES in CBC mode |
| */ |
| define('NET_SSH1_CIPHER_DES', 2); |
| /** |
| * Triple-DES in CBC mode |
| * |
| * All implementations are required to support this |
| */ |
| define('NET_SSH1_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) |
| */ |
| define('NET_SSH1_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). |
| */ |
| define('NET_SSH1_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) |
| */ |
| define('NET_SSH1_CIPHER_BLOWFISH', 6); |
| /**#@-*/ |
| |
| /**#@+ |
| * Authentication Methods |
| * |
| * @see Net_SSH1::getSupportedAuthentications() |
| * @access public |
| */ |
| /** |
| * .rhosts or /etc/hosts.equiv |
| */ |
| define('NET_SSH1_AUTH_RHOSTS', 1); |
| /** |
| * pure RSA authentication |
| */ |
| define('NET_SSH1_AUTH_RSA', 2); |
| /** |
| * password authentication |
| * |
| * This is the only method that is supported by this library. |
| */ |
| define('NET_SSH1_AUTH_PASSWORD', 3); |
| /** |
| * .rhosts with RSA host authentication |
| */ |
| define('NET_SSH1_AUTH_RHOSTS_RSA', 4); |
| /**#@-*/ |
| |
| /**#@+ |
| * Terminal Modes |
| * |
| * @link http://3sp.com/content/developer/maverick-net/docs/Maverick.SSH.PseudoTerminalModesMembers.html |
| * @access private |
| */ |
| define('NET_SSH1_TTY_OP_END', 0); |
| /**#@-*/ |
| |
| /** |
| * The Response Type |
| * |
| * @see Net_SSH1::_get_binary_packet() |
| * @access private |
| */ |
| define('NET_SSH1_RESPONSE_TYPE', 1); |
| |
| /** |
| * The Response Data |
| * |
| * @see Net_SSH1::_get_binary_packet() |
| * @access private |
| */ |
| define('NET_SSH1_RESPONSE_DATA', 2); |
| |
| /**#@+ |
| * Execution Bitmap Masks |
| * |
| * @see Net_SSH1::bitmap |
| * @access private |
| */ |
| define('NET_SSH1_MASK_CONSTRUCTOR', 0x00000001); |
| define('NET_SSH1_MASK_LOGIN', 0x00000002); |
| define('NET_SSH1_MASK_SHELL', 0x00000004); |
| /**#@-*/ |
| |
| /**#@+ |
| * @access public |
| * @see Net_SSH1::getLog() |
| */ |
| /** |
| * Returns the message numbers |
| */ |
| define('NET_SSH1_LOG_SIMPLE', 1); |
| /** |
| * Returns the message content |
| */ |
| define('NET_SSH1_LOG_COMPLEX', 2); |
| /**#@-*/ |
| |
| /**#@+ |
| * @access public |
| * @see Net_SSH1::read() |
| */ |
| /** |
| * Returns when a string matching $expect exactly is found |
| */ |
| define('NET_SSH1_READ_SIMPLE', 1); |
| /** |
| * Returns when a string matching the regular expression $expect is found |
| */ |
| define('NET_SSH1_READ_REGEX', 2); |
| /**#@-*/ |
| |
| /** |
| * Pure-PHP implementation of SSHv1. |
| * |
| * @author Jim Wigginton <terrafrost@php.net> |
| * @version 0.1.0 |
| * @access public |
| * @package Net_SSH1 |
| */ |
| class Net_SSH1 { |
| /** |
| * 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 Integer |
| * @access private |
| */ |
| var $bitmap = 0; |
| |
| /** |
| * The Server Key Public Exponent |
| * |
| * Logged for debug purposes |
| * |
| * @see Net_SSH1::getServerKeyPublicExponent() |
| * @var String |
| * @access private |
| */ |
| var $server_key_public_exponent; |
| |
| /** |
| * The Server Key Public Modulus |
| * |
| * Logged for debug purposes |
| * |
| * @see Net_SSH1::getServerKeyPublicModulus() |
| * @var String |
| * @access private |
| */ |
| var $server_key_public_modulus; |
| |
| /** |
| * The Host Key Public Exponent |
| * |
| * Logged for debug purposes |
| * |
| * @see Net_SSH1::getHostKeyPublicExponent() |
| * @var String |
| * @access private |
| */ |
| var $host_key_public_exponent; |
| |
| /** |
| * The Host Key Public Modulus |
| * |
| * Logged for debug purposes |
| * |
| * @see Net_SSH1::getHostKeyPublicModulus() |
| * @var String |
| * @access private |
| */ |
| var $host_key_public_modulus; |
| |
| /** |
| * Supported Ciphers |
| * |
| * Logged for debug purposes |
| * |
| * @see Net_SSH1::getSupportedCiphers() |
| * @var Array |
| * @access private |
| */ |
| var $supported_ciphers = array( |
| NET_SSH1_CIPHER_NONE => 'No encryption', |
| NET_SSH1_CIPHER_IDEA => 'IDEA in CFB mode', |
| NET_SSH1_CIPHER_DES => 'DES in CBC mode', |
| NET_SSH1_CIPHER_3DES => 'Triple-DES in CBC mode', |
| NET_SSH1_CIPHER_BROKEN_TSS => 'TRI\'s Simple Stream encryption CBC', |
| NET_SSH1_CIPHER_RC4 => 'RC4', |
| NET_SSH1_CIPHER_BLOWFISH => 'Blowfish' |
| ); |
| |
| /** |
| * Supported Authentications |
| * |
| * Logged for debug purposes |
| * |
| * @see Net_SSH1::getSupportedAuthentications() |
| * @var Array |
| * @access private |
| */ |
| var $supported_authentications = array( |
| NET_SSH1_AUTH_RHOSTS => '.rhosts or /etc/hosts.equiv', |
| NET_SSH1_AUTH_RSA => 'pure RSA authentication', |
| NET_SSH1_AUTH_PASSWORD => 'password authentication', |
| NET_SSH1_AUTH_RHOSTS_RSA => '.rhosts with RSA host authentication' |
| ); |
| |
| /** |
| * Server Identification |
| * |
| * @see Net_SSH1::getServerIdentification() |
| * @var String |
| * @access private |
| */ |
| var $server_identification = ''; |
| |
| /** |
| * Protocol Flags |
| * |
| * @see Net_SSH1::Net_SSH1() |
| * @var Array |
| * @access private |
| */ |
| var $protocol_flags = array(); |
| |
| /** |
| * Protocol Flag Log |
| * |
| * @see Net_SSH1::getLog() |
| * @var Array |
| * @access private |
| */ |
| var $protocol_flag_log = array(); |
| |
| /** |
| * Message Log |
| * |
| * @see Net_SSH1::getLog() |
| * @var Array |
| * @access private |
| */ |
| var $message_log = array(); |
| |
| /** |
| * Interactive Buffer |
| * |
| * @see Net_SSH1::read() |
| * @var Array |
| * @access private |
| */ |
| var $interactive_buffer = ''; |
| |
| /** |
| * Default Constructor. |
| * |
| * Connects to an SSHv1 server |
| * |
| * @param String $host |
| * @param optional Integer $port |
| * @param optional Integer $timeout |
| * @param optional Integer $cipher |
| * @return Net_SSH1 |
| * @access public |
| */ |
| function Net_SSH1($host, $port = 22, $timeout = 10, $cipher = NET_SSH1_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); |
| |
| $this->fsock = @fsockopen($host, $port, $errno, $errstr, $timeout); |
| if (!$this->fsock) { |
| user_error(rtrim("Cannot connect to $host. Error $errno. $errstr"), E_USER_NOTICE); |
| return; |
| } |
| |
| $this->server_identification = $init_line = fgets($this->fsock, 255); |
| |
| if (defined('NET_SSH1_LOGGING')) { |
| $this->protocol_flags_log[] = '<-'; |
| $this->protocol_flags_log[] = '->'; |
| |
| if (NET_SSH1_LOGGING == NET_SSH1_LOG_COMPLEX) { |
| $this->message_log[] = $this->server_identification; |
| $this->message_log[] = $this->identifier . "\r\n"; |
| } |
| } |
| |
| if (!preg_match('#SSH-([0-9\.]+)-(.+)#', $init_line, $parts)) { |
| user_error('Can only connect to SSH servers', E_USER_NOTICE); |
| return; |
| } |
| if ($parts[1][0] != 1) { |
| user_error("Cannot connect to SSH $parts[1] servers", E_USER_NOTICE); |
| return; |
| } |
| |
| fputs($this->fsock, $this->identifier."\r\n"); |
| |
| $response = $this->_get_binary_packet(); |
| if ($response[NET_SSH1_RESPONSE_TYPE] != NET_SSH1_SMSG_PUBLIC_KEY) { |
| user_error('Expected SSH_SMSG_PUBLIC_KEY', E_USER_NOTICE); |
| return; |
| } |
| |
| $anti_spoofing_cookie = $this->_string_shift($response[NET_SSH1_RESPONSE_DATA], 8); |
| |
| $this->_string_shift($response[NET_SSH1_RESPONSE_DATA], 4); |
| |
| $temp = unpack('nlen', $this->_string_shift($response[NET_SSH1_RESPONSE_DATA], 2)); |
| $server_key_public_exponent = new Math_BigInteger($this->_string_shift($response[NET_SSH1_RESPONSE_DATA], ceil($temp['len'] / 8)), 256); |
| $this->server_key_public_exponent = $server_key_public_exponent; |
| |
| $temp = unpack('nlen', $this->_string_shift($response[NET_SSH1_RESPONSE_DATA], 2)); |
| $server_key_public_modulus = new Math_BigInteger($this->_string_shift($response[NET_SSH1_RESPONSE_DATA], ceil($temp['len'] / 8)), 256); |
| $this->server_key_public_modulus = $server_key_public_modulus; |
| |
| $this->_string_shift($response[NET_SSH1_RESPONSE_DATA], 4); |
| |
| $temp = unpack('nlen', $this->_string_shift($response[NET_SSH1_RESPONSE_DATA], 2)); |
| $host_key_public_exponent = new Math_BigInteger($this->_string_shift($response[NET_SSH1_RESPONSE_DATA], ceil($temp['len'] / 8)), 256); |
| $this->host_key_public_exponent = $host_key_public_exponent; |
| |
| $temp = unpack('nlen', $this->_string_shift($response[NET_SSH1_RESPONSE_DATA], 2)); |
| $host_key_public_modulus = new Math_BigInteger($this->_string_shift($response[NET_SSH1_RESPONSE_DATA], ceil($temp['len'] / 8)), 256); |
| $this->host_key_public_modulus = $host_key_public_modulus; |
| |
| $this->_string_shift($response[NET_SSH1_RESPONSE_DATA], 4); |
| |
| // get a list of the supported ciphers |
| extract(unpack('Nsupported_ciphers_mask', $this->_string_shift($response[NET_SSH1_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 |
| extract(unpack('Nsupported_authentications_mask', $this->_string_shift($response[NET_SSH1_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)); |
| |
| $session_key = ''; |
| for ($i = 0; $i < 32; $i++) { |
| $session_key.= chr(crypt_random(0, 255)); |
| } |
| $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[$cipher]) ? $cipher : NET_SSH1_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($data)) { |
| user_error('Error sending SSH_CMSG_SESSION_KEY', E_USER_NOTICE); |
| return; |
| } |
| |
| switch ($cipher) { |
| //case NET_SSH1_CIPHER_NONE: |
| // $this->crypto = new Crypt_Null(); |
| // break; |
| case NET_SSH1_CIPHER_DES: |
| $this->crypto = new Crypt_DES(); |
| $this->crypto->disablePadding(); |
| $this->crypto->enableContinuousBuffer(); |
| $this->crypto->setKey(substr($session_key, 0, 8)); |
| break; |
| case NET_SSH1_CIPHER_3DES: |
| $this->crypto = new Crypt_TripleDES(CRYPT_DES_MODE_3CBC); |
| $this->crypto->disablePadding(); |
| $this->crypto->enableContinuousBuffer(); |
| $this->crypto->setKey(substr($session_key, 0, 24)); |
| break; |
| //case NET_SSH1_CIPHER_RC4: |
| // $this->crypto = new Crypt_RC4(); |
| // $this->crypto->enableContinuousBuffer(); |
| // $this->crypto->setKey(substr($session_key, 0, 16)); |
| // break; |
| } |
| |
| $response = $this->_get_binary_packet(); |
| |
| if ($response[NET_SSH1_RESPONSE_TYPE] != NET_SSH1_SMSG_SUCCESS) { |
| user_error('Expected SSH_SMSG_SUCCESS', E_USER_NOTICE); |
| return; |
| } |
| |
| $this->bitmap = NET_SSH1_MASK_CONSTRUCTOR; |
| } |
| |
| /** |
| * Login |
| * |
| * @param String $username |
| * @param optional String $password |
| * @return Boolean |
| * @access public |
| */ |
| function login($username, $password = '') |
| { |
| if (!($this->bitmap & NET_SSH1_MASK_CONSTRUCTOR)) { |
| 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', E_USER_NOTICE); |
| return false; |
| } |
| |
| $response = $this->_get_binary_packet(); |
| |
| if ($response[NET_SSH1_RESPONSE_TYPE] == NET_SSH1_SMSG_SUCCESS) { |
| $this->bitmap |= NET_SSH1_MASK_LOGIN; |
| return true; |
| } else if ($response[NET_SSH1_RESPONSE_TYPE] != NET_SSH1_SMSG_FAILURE) { |
| user_error('Expected SSH_SMSG_SUCCESS or SSH_SMSG_FAILURE', E_USER_NOTICE); |
| 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', E_USER_NOTICE); |
| return false; |
| } |
| |
| // remove the username and password from the last logged packet |
| if (defined('NET_SSH1_LOGGING') && NET_SSH1_LOGGING == NET_SSH1_LOG_COMPLEX) { |
| $data = pack('CNa*', NET_SSH1_CMSG_AUTH_PASSWORD, strlen('password'), 'password'); |
| $this->message_log[count($this->message_log) - 1] = $data; // zzzzz |
| } |
| |
| $response = $this->_get_binary_packet(); |
| |
| if ($response[NET_SSH1_RESPONSE_TYPE] == NET_SSH1_SMSG_SUCCESS) { |
| $this->bitmap |= NET_SSH1_MASK_LOGIN; |
| return true; |
| } else if ($response[NET_SSH1_RESPONSE_TYPE] == NET_SSH1_SMSG_FAILURE) { |
| return false; |
| } else { |
| user_error('Expected SSH_SMSG_SUCCESS or SSH_SMSG_FAILURE', E_USER_NOTICE); |
| return false; |
| } |
| } |
| |
| /** |
| * 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 Net_SSH1 object will need to be created. |
| * |
| * Returns false on failure and the output, otherwise. |
| * |
| * @see Net_SSH1::interactiveRead() |
| * @see Net_SSH1::interactiveWrite() |
| * @param String $cmd |
| * @return mixed |
| * @access public |
| */ |
| function exec($cmd, $block = true) |
| { |
| if (!($this->bitmap & NET_SSH1_MASK_LOGIN)) { |
| user_error('Operation disallowed prior to login()', E_USER_NOTICE); |
| return false; |
| } |
| |
| $data = pack('CNa*', NET_SSH1_CMSG_EXEC_CMD, strlen($cmd), $cmd); |
| |
| if (!$this->_send_binary_packet($data)) { |
| user_error('Error sending SSH_CMSG_EXEC_CMD', E_USER_NOTICE); |
| return false; |
| } |
| |
| if (!$block) { |
| return true; |
| } |
| |
| $output = ''; |
| $response = $this->_get_binary_packet(); |
| |
| do { |
| $output.= substr($response[NET_SSH1_RESPONSE_DATA], 4); |
| $response = $this->_get_binary_packet(); |
| } while ($response[NET_SSH1_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 Net_SSH1 object needs to be created. |
| $this->bitmap = 0; |
| |
| return $output; |
| } |
| |
| /** |
| * Creates an interactive shell |
| * |
| * @see Net_SSH1::interactiveRead() |
| * @see Net_SSH1::interactiveWrite() |
| * @return Boolean |
| * @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. |
| $data = pack('CNa*N4C', NET_SSH1_CMSG_REQUEST_PTY, strlen('vt100'), 'vt100', 24, 80, 0, 0, NET_SSH1_TTY_OP_END); |
| |
| if (!$this->_send_binary_packet($data)) { |
| user_error('Error sending SSH_CMSG_REQUEST_PTY', E_USER_NOTICE); |
| return false; |
| } |
| |
| $response = $this->_get_binary_packet(); |
| |
| if ($response[NET_SSH1_RESPONSE_TYPE] != NET_SSH1_SMSG_SUCCESS) { |
| user_error('Expected SSH_SMSG_SUCCESS', E_USER_NOTICE); |
| return false; |
| } |
| |
| $data = pack('C', NET_SSH1_CMSG_EXEC_SHELL); |
| |
| if (!$this->_send_binary_packet($data)) { |
| user_error('Error sending SSH_CMSG_EXEC_SHELL', E_USER_NOTICE); |
| return false; |
| } |
| |
| $this->bitmap |= NET_SSH1_MASK_SHELL; |
| |
| //stream_set_blocking($this->fsock, 0); |
| |
| return true; |
| } |
| |
| /** |
| * Inputs a command into an interactive shell. |
| * |
| * @see Net_SSH1::interactiveWrite() |
| * @param String $cmd |
| * @return Boolean |
| * @access public |
| */ |
| function write($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 == NET_SSH1_READ_REGEX, |
| * a regular expression. |
| * |
| * @see Net_SSH1::write() |
| * @param String $expect |
| * @param Integer $mode |
| * @return Boolean |
| * @access public |
| */ |
| function read($expect, $mode = NET_SSH1_READ_SIMPLE) |
| { |
| if (!($this->bitmap & NET_SSH1_MASK_LOGIN)) { |
| user_error('Operation disallowed prior to login()', E_USER_NOTICE); |
| return false; |
| } |
| |
| if (!($this->bitmap & NET_SSH1_MASK_SHELL) && !$this->_initShell()) { |
| user_error('Unable to initiate an interactive shell session', E_USER_NOTICE); |
| return false; |
| } |
| |
| $match = $expect; |
| while (true) { |
| if ($mode == NET_SSH1_READ_REGEX) { |
| preg_match($expect, $this->interactiveBuffer, $matches); |
| $match = $matches[0]; |
| } |
| $pos = strpos($this->interactiveBuffer, $match); |
| if ($pos !== false) { |
| return $this->_string_shift($this->interactiveBuffer, $pos + strlen($match)); |
| } |
| $response = $this->_get_binary_packet(); |
| $this->interactiveBuffer.= substr($response[NET_SSH1_RESPONSE_DATA], 4); |
| } |
| } |
| |
| /** |
| * Inputs a command into an interactive shell. |
| * |
| * @see Net_SSH1::interactiveRead() |
| * @param String $cmd |
| * @return Boolean |
| * @access public |
| */ |
| function interactiveWrite($cmd) |
| { |
| if (!($this->bitmap & NET_SSH1_MASK_LOGIN)) { |
| user_error('Operation disallowed prior to login()', E_USER_NOTICE); |
| return false; |
| } |
| |
| if (!($this->bitmap & NET_SSH1_MASK_SHELL) && !$this->_initShell()) { |
| user_error('Unable to initiate an interactive shell session', E_USER_NOTICE); |
| return false; |
| } |
| |
| $data = pack('CNa*', NET_SSH1_CMSG_STDIN_DATA, strlen($cmd), $cmd); |
| |
| if (!$this->_send_binary_packet($data)) { |
| user_error('Error sending SSH_CMSG_STDIN', E_USER_NOTICE); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| /** |
| * Returns the output of an interactive shell when no more output is available. |
| * |
| * Requires PHP 4.3.0 or later due to the use of the stream_select() function. If you see stuff like |
| * "[00m", you're seeing ANSI escape codes. According to |
| * {@link http://support.microsoft.com/kb/101875 How to Enable ANSI.SYS in a Command Window}, "Windows NT |
| * does not support ANSI escape sequences in Win32 Console applications", so if you're a Windows user, |
| * there's not going to be much recourse. |
| * |
| * @see Net_SSH1::interactiveRead() |
| * @return String |
| * @access public |
| */ |
| function interactiveRead() |
| { |
| if (!($this->bitmap & NET_SSH1_MASK_LOGIN)) { |
| user_error('Operation disallowed prior to login()', E_USER_NOTICE); |
| return false; |
| } |
| |
| if (!($this->bitmap & NET_SSH1_MASK_SHELL) && !$this->_initShell()) { |
| user_error('Unable to initiate an interactive shell session', E_USER_NOTICE); |
| return false; |
| } |
| |
| $read = array($this->fsock); |
| $write = $except = null; |
| if (stream_select($read, $write, $except, 0)) { |
| $response = $this->_get_binary_packet(); |
| return substr($response[NET_SSH1_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 = $this->_get_binary_packet(); |
| switch ($response[NET_SSH1_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); |
| } |
| |
| $this->_send_binary_packet($data); |
| fclose($this->fsock); |
| $this->bitmap = 0; |
| } |
| } |
| |
| /** |
| * Gets Binary Packets |
| * |
| * See 'The Binary Packet Protocol' of protocol-1.5.txt for more info. |
| * |
| * Also, this function could be improved upon by adding detection for the following exploit: |
| * http://www.securiteam.com/securitynews/5LP042K3FY.html |
| * |
| * @see Net_SSH1::_send_binary_packet() |
| * @return Array |
| * @access private |
| */ |
| function _get_binary_packet() |
| { |
| if (feof($this->fsock)) { |
| //user_error('connection closed prematurely', E_USER_NOTICE); |
| return false; |
| } |
| |
| $temp = unpack('Nlength', fread($this->fsock, 4)); |
| |
| $padding_length = 8 - ($temp['length'] & 7); |
| $length = $temp['length'] + $padding_length; |
| |
| $start = strtok(microtime(), ' ') + strtok(''); // http://php.net/microtime#61838 |
| $raw = fread($this->fsock, $length); |
| $stop = strtok(microtime(), ' ') + strtok(''); |
| |
| if ($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); |
| |
| $temp = unpack('Ncrc', substr($raw, -4)); |
| |
| //if ( $temp['crc'] != $this->_crc($padding . $type . $data) ) { |
| // user_error('Bad CRC in packet from server', E_USER_NOTICE); |
| // return false; |
| //} |
| |
| $type = ord($type); |
| |
| if (defined('NET_SSH1_LOGGING')) { |
| $temp = isset($this->protocol_flags[$type]) ? $this->protocol_flags[$type] : 'UNKNOWN'; |
| $this->protocol_flags_log[] = '<- ' . $temp . |
| ' (' . round($stop - $start, 4) . 's)'; |
| if (NET_SSH1_LOGGING == NET_SSH1_LOG_COMPLEX) { |
| $this->message_log[] = $data; |
| } |
| } |
| |
| return array( |
| NET_SSH1_RESPONSE_TYPE => $type, |
| NET_SSH1_RESPONSE_DATA => $data |
| ); |
| } |
| |
| /** |
| * Sends Binary Packets |
| * |
| * Returns true on success, false on failure. |
| * |
| * @see Net_SSH1::_get_binary_packet() |
| * @param String $data |
| * @return Boolean |
| * @access private |
| */ |
| function _send_binary_packet($data) { |
| if (feof($this->fsock)) { |
| //user_error('connection closed prematurely', E_USER_NOTICE); |
| return false; |
| } |
| |
| if (defined('NET_SSH1_LOGGING')) { |
| $temp = isset($this->protocol_flags[ord($data[0])]) ? $this->protocol_flags[ord($data[0])] : 'UNKNOWN'; |
| $this->protocol_flags_log[] = '-> ' . $temp . |
| ' (' . round($stop - $start, 4) . 's)'; |
| if (NET_SSH1_LOGGING == NET_SSH1_LOG_COMPLEX) { |
| $this->message_log[] = substr($data, 1); |
| } |
| } |
| |
| $length = strlen($data) + 4; |
| |
| $padding_length = 8 - ($length & 7); |
| $padding = ''; |
| for ($i = 0; $i < $padding_length; $i++) { |
| $padding.= chr(crypt_random(0, 255)); |
| } |
| |
| $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(''); |
| |
| 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 Net_SSH1::_get_binary_packet() |
| * @see Net_SSH1::_send_binary_packet() |
| * @param String $data |
| * @return Integer |
| * @access private |
| */ |
| function _crc($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 optional Integer $index |
| * @return String |
| * @access private |
| */ |
| function _string_shift(&$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 Net_SSH1::Net_SSH1() |
| * @param Math_BigInteger $m |
| * @param Array $key |
| * @return Math_BigInteger |
| * @access private |
| */ |
| function _rsa_crypt($m, $key) |
| { |
| /* |
| if (!class_exists('Crypt_RSA')) { |
| require_once('Crypt/RSA.php'); |
| } |
| |
| $rsa = new Crypt_RSA(); |
| $rsa->loadKey($key, CRYPT_RSA_PUBLIC_FORMAT_RAW); |
| $rsa->setEncryptionMode(CRYPT_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 |
| $temp = chr(0) . chr(2); |
| $modulus = $key[1]->toBytes(); |
| $length = strlen($modulus) - strlen($m) - 3; |
| for ($i = 0; $i < $length; $i++) { |
| $temp.= chr(crypt_random(1, 255)); |
| } |
| $temp.= chr(0) . $m; |
| |
| $m = new Math_BigInteger($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. |
| * |
| * @param Array $array |
| * @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_SSH2_LOGGING == NET_SSH2_LOG_COMPLEX, an array if NET_SSH2_LOGGING == NET_SSH2_LOG_SIMPLE and false if !defined('NET_SSH2_LOGGING') |
| * |
| * @access public |
| * @return String or Array |
| */ |
| function getLog() |
| { |
| if (!defined('NET_SSH1_LOGGING')) { |
| return false; |
| } |
| |
| switch (NET_SSH1_LOGGING) { |
| case NET_SSH1_LOG_SIMPLE: |
| return $this->message_number_log; |
| break; |
| case NET_SSH1_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) |
| { |
| static $boundary = ':', $long_width = 65, $short_width = 16; |
| |
| $output = ''; |
| for ($i = 0; $i < count($message_log); $i++) { |
| $output.= $message_number_log[$i] . "\r\n"; |
| $current_log = $message_log[$i]; |
| $j = 0; |
| do { |
| if (!empty($current_log)) { |
| $output.= str_pad(dechex($j), 7, '0', STR_PAD_LEFT) . '0 '; |
| } |
| $fragment = $this->_string_shift($current_log, $short_width); |
| $hex = substr( |
| preg_replace( |
| '#(.)#es', |
| '"' . $boundary . '" . str_pad(dechex(ord(substr("\\1", -1))), 2, "0", STR_PAD_LEFT)', |
| $fragment), |
| strlen($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, $long_width - $short_width, ' ') . $raw . "\r\n"; |
| $j++; |
| } while (!empty($current_log)); |
| $output.= "\r\n"; |
| } |
| |
| return $output; |
| } |
| |
| /** |
| * 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 optional Boolean $raw_output |
| * @return String |
| * @access public |
| */ |
| function getServerKeyPublicExponent($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 optional Boolean $raw_output |
| * @return String |
| * @access public |
| */ |
| function getServerKeyPublicModulus($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 optional Boolean $raw_output |
| * @return String |
| * @access public |
| */ |
| function getHostKeyPublicExponent($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 optional Boolean $raw_output |
| * @return String |
| * @access public |
| */ |
| function getHostKeyPublicModulus($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(NET_SSH1_CIPHER_3DES). |
| * |
| * @param optional Boolean $raw_output |
| * @return Array |
| * @access public |
| */ |
| function getSupportedCiphers($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(NET_SSH1_AUTH_PASSWORD). |
| * |
| * @param optional Boolean $raw_output |
| * @return Array |
| * @access public |
| */ |
| function getSupportedAuthentications($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); |
| } |
| } |
| ?> |