mirror of
https://github.com/phpseclib/phpseclib.git
synced 2024-12-29 12:32:45 +00:00
Merge branch 'master' into php5
* master: SSH_Agent: add new line at end of file to comply with CS SSH_Agent: another CS update SSH_Agent: CS updates SSH_Agent: mv SSH_Agent to SSH/Agent and create SSH_Agent for BC
This commit is contained in:
Andreas Fischer
commit
b7729feea0
313
phpseclib/System/SSH/Agent.php
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313
phpseclib/System/SSH/Agent.php
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@ -0,0 +1,313 @@
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|
<?php
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/**
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* Pure-PHP ssh-agent client.
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*
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* PHP versions 4 and 5
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*
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||||||
|
* Here are some examples of how to use this library:
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||||||
|
* <code>
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|
* <?php
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|
* include('System/SSH/Agent.php');
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|
* include('Net/SSH2.php');
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*
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* $agent = new System_SSH_Agent();
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|
*
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|
* $ssh = new Net_SSH2('www.domain.tld');
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|
* if (!$ssh->login('username', $agent)) {
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|
* exit('Login Failed');
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|
* }
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|
*
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|
* echo $ssh->exec('pwd');
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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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||||||
|
* LICENSE: Permission is hereby granted, free of charge, to any person obtaining a copy
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|
* of this software and associated documentation files (the "Software"), to deal
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||||||
|
* in the Software without restriction, including without limitation the rights
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|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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||||||
|
* copies of the Software, and to permit persons to whom the Software is
|
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|
* furnished to do so, subject to the following conditions:
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|
*
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|
* The above copyright notice and this permission notice shall be included in
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||||||
|
* all copies or substantial portions of the Software.
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||||||
|
*
|
||||||
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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||||||
|
* 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
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|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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||||||
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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|
* THE SOFTWARE.
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*
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* @category System
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|
* @package System_SSH_Agent
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|
* @author Jim Wigginton <terrafrost@php.net>
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* @copyright MMXIV 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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* @internal See http://api.libssh.org/rfc/PROTOCOL.agent
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|
*/
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|
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|
/**#@+
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* Message numbers
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|
*
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|
* @access private
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|
*/
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// to request SSH1 keys you have to use SSH_AGENTC_REQUEST_RSA_IDENTITIES (1)
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define('SYSTEM_SSH_AGENTC_REQUEST_IDENTITIES', 11);
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|
// this is the SSH2 response; the SSH1 response is SSH_AGENT_RSA_IDENTITIES_ANSWER (2).
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|
define('SYSTEM_SSH_AGENT_IDENTITIES_ANSWER', 12);
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|
define('SYSTEM_SSH_AGENT_FAILURE', 5);
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// the SSH1 request is SSH_AGENTC_RSA_CHALLENGE (3)
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|
define('SYSTEM_SSH_AGENTC_SIGN_REQUEST', 13);
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|
// the SSH1 response is SSH_AGENT_RSA_RESPONSE (4)
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|
define('SYSTEM_SSH_AGENT_SIGN_RESPONSE', 14);
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|
/**#@-*/
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|
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|
/**
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|
* Pure-PHP ssh-agent client identity object
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|
*
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|
* Instantiation should only be performed by System_SSH_Agent class.
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|
* This could be thought of as implementing an interface that Crypt_RSA
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||||||
|
* implements. ie. maybe a Net_SSH_Auth_PublicKey interface or something.
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||||||
|
* The methods in this interface would be getPublicKey, setSignatureMode
|
||||||
|
* and sign since those are the methods phpseclib looks for to perform
|
||||||
|
* public key authentication.
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||||||
|
*
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|
* @package System_SSH_Agent
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||||||
|
* @author Jim Wigginton <terrafrost@php.net>
|
||||||
|
* @access internal
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||||||
|
*/
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|
class System_SSH_Agent_Identity
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|
{
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|
/**
|
||||||
|
* Key Object
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||||||
|
*
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||||||
|
* @var Crypt_RSA
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||||||
|
* @access private
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||||||
|
* @see System_SSH_Agent_Identity::getPublicKey()
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||||||
|
*/
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|
var $key;
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|
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||||||
|
/**
|
||||||
|
* Key Blob
|
||||||
|
*
|
||||||
|
* @var String
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||||||
|
* @access private
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||||||
|
* @see System_SSH_Agent_Identity::sign()
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||||||
|
*/
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||||||
|
var $key_blob;
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||||||
|
|
||||||
|
/**
|
||||||
|
* Socket Resource
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||||||
|
*
|
||||||
|
* @var Resource
|
||||||
|
* @access private
|
||||||
|
* @see System_SSH_Agent_Identity::sign()
|
||||||
|
*/
|
||||||
|
var $fsock;
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Default Constructor.
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||||||
|
*
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||||||
|
* @param Resource $fsock
|
||||||
|
* @return System_SSH_Agent_Identity
|
||||||
|
* @access private
|
||||||
|
*/
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||||||
|
function System_SSH_Agent_Identity($fsock)
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||||||
|
{
|
||||||
|
$this->fsock = $fsock;
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||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Set Public Key
|
||||||
|
*
|
||||||
|
* Called by System_SSH_Agent::requestIdentities()
|
||||||
|
*
|
||||||
|
* @param Crypt_RSA $key
|
||||||
|
* @access private
|
||||||
|
*/
|
||||||
|
function setPublicKey($key)
|
||||||
|
{
|
||||||
|
$this->key = $key;
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||||||
|
$this->key->setPublicKey();
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Set Public Key
|
||||||
|
*
|
||||||
|
* Called by System_SSH_Agent::requestIdentities(). The key blob could be extracted from $this->key
|
||||||
|
* but this saves a small amount of computation.
|
||||||
|
*
|
||||||
|
* @param String $key_blob
|
||||||
|
* @access private
|
||||||
|
*/
|
||||||
|
function setPublicKeyBlob($key_blob)
|
||||||
|
{
|
||||||
|
$this->key_blob = $key_blob;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Get Public Key
|
||||||
|
*
|
||||||
|
* Wrapper for $this->key->getPublicKey()
|
||||||
|
*
|
||||||
|
* @param Integer $format optional
|
||||||
|
* @return Mixed
|
||||||
|
* @access public
|
||||||
|
*/
|
||||||
|
function getPublicKey($format = null)
|
||||||
|
{
|
||||||
|
return !isset($format) ? $this->key->getPublicKey() : $this->key->getPublicKey($format);
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Set Signature Mode
|
||||||
|
*
|
||||||
|
* Doesn't do anything as ssh-agent doesn't let you pick and choose the signature mode. ie.
|
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|
* ssh-agent's only supported mode is CRYPT_RSA_SIGNATURE_PKCS1
|
||||||
|
*
|
||||||
|
* @param Integer $mode
|
||||||
|
* @access public
|
||||||
|
*/
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||||||
|
function setSignatureMode($mode)
|
||||||
|
{
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||||||
|
}
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||||||
|
|
||||||
|
/**
|
||||||
|
* Create a signature
|
||||||
|
*
|
||||||
|
* See "2.6.2 Protocol 2 private key signature request"
|
||||||
|
*
|
||||||
|
* @param String $message
|
||||||
|
* @return String
|
||||||
|
* @access public
|
||||||
|
*/
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||||||
|
function sign($message)
|
||||||
|
{
|
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|
// the last parameter (currently 0) is for flags and ssh-agent only defines one flag (for ssh-dss): SSH_AGENT_OLD_SIGNATURE
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|
$packet = pack('CNa*Na*N', SYSTEM_SSH_AGENTC_SIGN_REQUEST, strlen($this->key_blob), $this->key_blob, strlen($message), $message, 0);
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|
$packet = pack('Na*', strlen($packet), $packet);
|
||||||
|
if (strlen($packet) != fputs($this->fsock, $packet)) {
|
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|
user_error('Connection closed during signing');
|
||||||
|
}
|
||||||
|
|
||||||
|
$length = current(unpack('N', fread($this->fsock, 4)));
|
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|
$type = ord(fread($this->fsock, 1));
|
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|
if ($type != SYSTEM_SSH_AGENT_SIGN_RESPONSE) {
|
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|
user_error('Unable to retreive signature');
|
||||||
|
}
|
||||||
|
|
||||||
|
$signature_blob = fread($this->fsock, $length - 1);
|
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|
// the only other signature format defined - ssh-dss - is the same length as ssh-rsa
|
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|
// the + 12 is for the other various SSH added length fields
|
||||||
|
return substr($signature_blob, strlen('ssh-rsa') + 12);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Pure-PHP ssh-agent client identity factory
|
||||||
|
*
|
||||||
|
* requestIdentities() method pumps out System_SSH_Agent_Identity objects
|
||||||
|
*
|
||||||
|
* @package System_SSH_Agent
|
||||||
|
* @author Jim Wigginton <terrafrost@php.net>
|
||||||
|
* @access internal
|
||||||
|
*/
|
||||||
|
class System_SSH_Agent
|
||||||
|
{
|
||||||
|
/**
|
||||||
|
* Socket Resource
|
||||||
|
*
|
||||||
|
* @var Resource
|
||||||
|
* @access private
|
||||||
|
*/
|
||||||
|
var $fsock;
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Default Constructor
|
||||||
|
*
|
||||||
|
* @return System_SSH_Agent
|
||||||
|
* @access public
|
||||||
|
*/
|
||||||
|
function System_SSH_Agent()
|
||||||
|
{
|
||||||
|
switch (true) {
|
||||||
|
case isset($_SERVER['SSH_AUTH_SOCK']):
|
||||||
|
$address = $_SERVER['SSH_AUTH_SOCK'];
|
||||||
|
break;
|
||||||
|
case isset($_ENV['SSH_AUTH_SOCK']):
|
||||||
|
$address = $_ENV['SSH_AUTH_SOCK'];
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
user_error('SSH_AUTH_SOCK not found');
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
|
||||||
|
$this->fsock = fsockopen('unix://' . $address, 0, $errno, $errstr);
|
||||||
|
if (!$this->fsock) {
|
||||||
|
user_error("Unable to connect to ssh-agent (Error $errno: $errstr)");
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Request Identities
|
||||||
|
*
|
||||||
|
* See "2.5.2 Requesting a list of protocol 2 keys"
|
||||||
|
* Returns an array containing zero or more System_SSH_Agent_Identity objects
|
||||||
|
*
|
||||||
|
* @return Array
|
||||||
|
* @access public
|
||||||
|
*/
|
||||||
|
function requestIdentities()
|
||||||
|
{
|
||||||
|
if (!$this->fsock) {
|
||||||
|
return array();
|
||||||
|
}
|
||||||
|
|
||||||
|
$packet = pack('NC', 1, SYSTEM_SSH_AGENTC_REQUEST_IDENTITIES);
|
||||||
|
if (strlen($packet) != fputs($this->fsock, $packet)) {
|
||||||
|
user_error('Connection closed while requesting identities');
|
||||||
|
}
|
||||||
|
|
||||||
|
$length = current(unpack('N', fread($this->fsock, 4)));
|
||||||
|
$type = ord(fread($this->fsock, 1));
|
||||||
|
if ($type != SYSTEM_SSH_AGENT_IDENTITIES_ANSWER) {
|
||||||
|
user_error('Unable to request identities');
|
||||||
|
}
|
||||||
|
|
||||||
|
$identities = array();
|
||||||
|
$keyCount = current(unpack('N', fread($this->fsock, 4)));
|
||||||
|
for ($i = 0; $i < $keyCount; $i++) {
|
||||||
|
$length = current(unpack('N', fread($this->fsock, 4)));
|
||||||
|
$key_blob = fread($this->fsock, $length);
|
||||||
|
$length = current(unpack('N', fread($this->fsock, 4)));
|
||||||
|
$key_comment = fread($this->fsock, $length);
|
||||||
|
$length = current(unpack('N', substr($key_blob, 0, 4)));
|
||||||
|
$key_type = substr($key_blob, 4, $length);
|
||||||
|
switch ($key_type) {
|
||||||
|
case 'ssh-rsa':
|
||||||
|
if (!class_exists('Crypt_RSA')) {
|
||||||
|
include_once 'Crypt/RSA.php';
|
||||||
|
}
|
||||||
|
$key = new Crypt_RSA();
|
||||||
|
$key->loadKey('ssh-rsa ' . base64_encode($key_blob) . ' ' . $key_comment);
|
||||||
|
break;
|
||||||
|
case 'ssh-dss':
|
||||||
|
// not currently supported
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
// resources are passed by reference by default
|
||||||
|
if (isset($key)) {
|
||||||
|
$identity = new System_SSH_Agent_Identity($this->fsock);
|
||||||
|
$identity->setPublicKey($key);
|
||||||
|
$identity->setPublicKeyBlob($key_blob);
|
||||||
|
$identities[] = $identity;
|
||||||
|
unset($key);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
return $identities;
|
||||||
|
}
|
||||||
|
}
|
||||||
@ -1,26 +1,13 @@
|
|||||||
<?php
|
<?php
|
||||||
/**
|
/**
|
||||||
* Pure-PHP ssh-agent client.
|
* Pure-PHP ssh-agent client wrapper
|
||||||
*
|
*
|
||||||
* PHP versions 4 and 5
|
* PHP versions 4 and 5
|
||||||
*
|
*
|
||||||
* Here are some examples of how to use this library:
|
* Originally System_SSH_Agent was accessed as System/SSH_Agent.php instead of
|
||||||
* <code>
|
* System/SSH/Agent.php. The problem with this is that PSR0 compatible autoloaders
|
||||||
* <?php
|
* don't support that kind of directory layout hence the package being moved and
|
||||||
* include('System/SSH_Agent.php');
|
* this "alias" being created to maintain backwards compatibility.
|
||||||
* include('Net/SSH2.php');
|
|
||||||
*
|
|
||||||
* $agent = new System_SSH_Agent();
|
|
||||||
*
|
|
||||||
* $ssh = new Net_SSH2('www.domain.tld');
|
|
||||||
* if (!$ssh->login('username', $agent)) {
|
|
||||||
* exit('Login Failed');
|
|
||||||
* }
|
|
||||||
*
|
|
||||||
* echo $ssh->exec('pwd');
|
|
||||||
* echo $ssh->exec('ls -la');
|
|
||||||
* ?>
|
|
||||||
* </code>
|
|
||||||
*
|
*
|
||||||
* LICENSE: Permission is hereby granted, free of charge, to any person obtaining a copy
|
* 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
|
* of this software and associated documentation files (the "Software"), to deal
|
||||||
@ -49,265 +36,4 @@
|
|||||||
* @internal See http://api.libssh.org/rfc/PROTOCOL.agent
|
* @internal See http://api.libssh.org/rfc/PROTOCOL.agent
|
||||||
*/
|
*/
|
||||||
|
|
||||||
/**#@+
|
require_once 'SSH/Agent.php';
|
||||||
* Message numbers
|
|
||||||
*
|
|
||||||
* @access private
|
|
||||||
*/
|
|
||||||
// to request SSH1 keys you have to use SSH_AGENTC_REQUEST_RSA_IDENTITIES (1)
|
|
||||||
define('SYSTEM_SSH_AGENTC_REQUEST_IDENTITIES', 11);
|
|
||||||
// this is the SSH2 response; the SSH1 response is SSH_AGENT_RSA_IDENTITIES_ANSWER (2).
|
|
||||||
define('SYSTEM_SSH_AGENT_IDENTITIES_ANSWER', 12);
|
|
||||||
define('SYSTEM_SSH_AGENT_FAILURE', 5);
|
|
||||||
// the SSH1 request is SSH_AGENTC_RSA_CHALLENGE (3)
|
|
||||||
define('SYSTEM_SSH_AGENTC_SIGN_REQUEST', 13);
|
|
||||||
// the SSH1 response is SSH_AGENT_RSA_RESPONSE (4)
|
|
||||||
define('SYSTEM_SSH_AGENT_SIGN_RESPONSE', 14);
|
|
||||||
/**#@-*/
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Pure-PHP ssh-agent client identity object
|
|
||||||
*
|
|
||||||
* Instantiation should only be performed by System_SSH_Agent class.
|
|
||||||
* This could be thought of as implementing an interface that Crypt_RSA
|
|
||||||
* implements. ie. maybe a Net_SSH_Auth_PublicKey interface or something.
|
|
||||||
* The methods in this interface would be getPublicKey, setSignatureMode
|
|
||||||
* and sign since those are the methods phpseclib looks for to perform
|
|
||||||
* public key authentication.
|
|
||||||
*
|
|
||||||
* @package System_SSH_Agent
|
|
||||||
* @author Jim Wigginton <terrafrost@php.net>
|
|
||||||
* @access internal
|
|
||||||
*/
|
|
||||||
class System_SSH_Agent_Identity
|
|
||||||
{
|
|
||||||
/**
|
|
||||||
* Key Object
|
|
||||||
*
|
|
||||||
* @var Crypt_RSA
|
|
||||||
* @access private
|
|
||||||
* @see System_SSH_Agent_Identity::getPublicKey()
|
|
||||||
*/
|
|
||||||
var $key;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Key Blob
|
|
||||||
*
|
|
||||||
* @var String
|
|
||||||
* @access private
|
|
||||||
* @see System_SSH_Agent_Identity::sign()
|
|
||||||
*/
|
|
||||||
var $key_blob;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Socket Resource
|
|
||||||
*
|
|
||||||
* @var Resource
|
|
||||||
* @access private
|
|
||||||
* @see System_SSH_Agent_Identity::sign()
|
|
||||||
*/
|
|
||||||
var $fsock;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Default Constructor.
|
|
||||||
*
|
|
||||||
* @param Resource $fsock
|
|
||||||
* @return System_SSH_Agent_Identity
|
|
||||||
* @access private
|
|
||||||
*/
|
|
||||||
function System_SSH_Agent_Identity($fsock)
|
|
||||||
{
|
|
||||||
$this->fsock = $fsock;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Set Public Key
|
|
||||||
*
|
|
||||||
* Called by System_SSH_Agent::requestIdentities()
|
|
||||||
*
|
|
||||||
* @param Crypt_RSA $key
|
|
||||||
* @access private
|
|
||||||
*/
|
|
||||||
function setPublicKey($key)
|
|
||||||
{
|
|
||||||
$this->key = $key;
|
|
||||||
$this->key->setPublicKey();
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Set Public Key
|
|
||||||
*
|
|
||||||
* Called by System_SSH_Agent::requestIdentities(). The key blob could be extracted from $this->key
|
|
||||||
* but this saves a small amount of computation.
|
|
||||||
*
|
|
||||||
* @param String $key_blob
|
|
||||||
* @access private
|
|
||||||
*/
|
|
||||||
function setPublicKeyBlob($key_blob)
|
|
||||||
{
|
|
||||||
$this->key_blob = $key_blob;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Get Public Key
|
|
||||||
*
|
|
||||||
* Wrapper for $this->key->getPublicKey()
|
|
||||||
*
|
|
||||||
* @param Integer $format optional
|
|
||||||
* @return Mixed
|
|
||||||
* @access public
|
|
||||||
*/
|
|
||||||
function getPublicKey($format = null)
|
|
||||||
{
|
|
||||||
return !isset($format) ? $this->key->getPublicKey() : $this->key->getPublicKey($format);
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Set Signature Mode
|
|
||||||
*
|
|
||||||
* Doesn't do anything as ssh-agent doesn't let you pick and choose the signature mode. ie.
|
|
||||||
* ssh-agent's only supported mode is CRYPT_RSA_SIGNATURE_PKCS1
|
|
||||||
*
|
|
||||||
* @param Integer $mode
|
|
||||||
* @access public
|
|
||||||
*/
|
|
||||||
function setSignatureMode($mode)
|
|
||||||
{
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Create a signature
|
|
||||||
*
|
|
||||||
* See "2.6.2 Protocol 2 private key signature request"
|
|
||||||
*
|
|
||||||
* @param String $message
|
|
||||||
* @return String
|
|
||||||
* @access public
|
|
||||||
*/
|
|
||||||
function sign($message)
|
|
||||||
{
|
|
||||||
// the last parameter (currently 0) is for flags and ssh-agent only defines one flag (for ssh-dss): SSH_AGENT_OLD_SIGNATURE
|
|
||||||
$packet = pack('CNa*Na*N', SYSTEM_SSH_AGENTC_SIGN_REQUEST, strlen($this->key_blob), $this->key_blob, strlen($message), $message, 0);
|
|
||||||
$packet = pack('Na*', strlen($packet), $packet);
|
|
||||||
if (strlen($packet) != fputs($this->fsock, $packet)) {
|
|
||||||
user_error('Connection closed during signing');
|
|
||||||
}
|
|
||||||
|
|
||||||
$length = current(unpack('N', fread($this->fsock, 4)));
|
|
||||||
$type = ord(fread($this->fsock, 1));
|
|
||||||
if ($type != SYSTEM_SSH_AGENT_SIGN_RESPONSE) {
|
|
||||||
user_error('Unable to retreive signature');
|
|
||||||
}
|
|
||||||
|
|
||||||
$signature_blob = fread($this->fsock, $length - 1);
|
|
||||||
// the only other signature format defined - ssh-dss - is the same length as ssh-rsa
|
|
||||||
// the + 12 is for the other various SSH added length fields
|
|
||||||
return substr($signature_blob, strlen('ssh-rsa') + 12);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Pure-PHP ssh-agent client identity factory
|
|
||||||
*
|
|
||||||
* requestIdentities() method pumps out System_SSH_Agent_Identity objects
|
|
||||||
*
|
|
||||||
* @package System_SSH_Agent
|
|
||||||
* @author Jim Wigginton <terrafrost@php.net>
|
|
||||||
* @access internal
|
|
||||||
*/
|
|
||||||
class System_SSH_Agent
|
|
||||||
{
|
|
||||||
/**
|
|
||||||
* Socket Resource
|
|
||||||
*
|
|
||||||
* @var Resource
|
|
||||||
* @access private
|
|
||||||
*/
|
|
||||||
var $fsock;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Default Constructor
|
|
||||||
*
|
|
||||||
* @return System_SSH_Agent
|
|
||||||
* @access public
|
|
||||||
*/
|
|
||||||
function System_SSH_Agent()
|
|
||||||
{
|
|
||||||
switch (true) {
|
|
||||||
case isset($_SERVER['SSH_AUTH_SOCK']):
|
|
||||||
$address = $_SERVER['SSH_AUTH_SOCK'];
|
|
||||||
break;
|
|
||||||
case isset($_ENV['SSH_AUTH_SOCK']):
|
|
||||||
$address = $_ENV['SSH_AUTH_SOCK'];
|
|
||||||
break;
|
|
||||||
default:
|
|
||||||
user_error('SSH_AUTH_SOCK not found');
|
|
||||||
return false;
|
|
||||||
}
|
|
||||||
|
|
||||||
$this->fsock = fsockopen('unix://' . $address, 0, $errno, $errstr);
|
|
||||||
if (!$this->fsock) {
|
|
||||||
user_error("Unable to connect to ssh-agent (Error $errno: $errstr)");
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Request Identities
|
|
||||||
*
|
|
||||||
* See "2.5.2 Requesting a list of protocol 2 keys"
|
|
||||||
* Returns an array containing zero or more System_SSH_Agent_Identity objects
|
|
||||||
*
|
|
||||||
* @return Array
|
|
||||||
* @access public
|
|
||||||
*/
|
|
||||||
function requestIdentities()
|
|
||||||
{
|
|
||||||
if (!$this->fsock) {
|
|
||||||
return array();
|
|
||||||
}
|
|
||||||
|
|
||||||
$packet = pack('NC', 1, SYSTEM_SSH_AGENTC_REQUEST_IDENTITIES);
|
|
||||||
if (strlen($packet) != fputs($this->fsock, $packet)) {
|
|
||||||
user_error('Connection closed while requesting identities');
|
|
||||||
}
|
|
||||||
|
|
||||||
$length = current(unpack('N', fread($this->fsock, 4)));
|
|
||||||
$type = ord(fread($this->fsock, 1));
|
|
||||||
if ($type != SYSTEM_SSH_AGENT_IDENTITIES_ANSWER) {
|
|
||||||
user_error('Unable to request identities');
|
|
||||||
}
|
|
||||||
|
|
||||||
$identities = array();
|
|
||||||
$keyCount = current(unpack('N', fread($this->fsock, 4)));
|
|
||||||
for ($i = 0; $i < $keyCount; $i++) {
|
|
||||||
$length = current(unpack('N', fread($this->fsock, 4)));
|
|
||||||
$key_blob = fread($this->fsock, $length);
|
|
||||||
$length = current(unpack('N', fread($this->fsock, 4)));
|
|
||||||
$key_comment = fread($this->fsock, $length);
|
|
||||||
$length = current(unpack('N', substr($key_blob, 0, 4)));
|
|
||||||
$key_type = substr($key_blob, 4, $length);
|
|
||||||
switch ($key_type) {
|
|
||||||
case 'ssh-rsa':
|
|
||||||
if (!class_exists('Crypt_RSA')) {
|
|
||||||
include_once 'Crypt/RSA.php';
|
|
||||||
}
|
|
||||||
$key = new Crypt_RSA();
|
|
||||||
$key->loadKey('ssh-rsa ' . base64_encode($key_blob) . ' ' . $key_comment);
|
|
||||||
break;
|
|
||||||
case 'ssh-dss':
|
|
||||||
// not currently supported
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
// resources are passed by reference by default
|
|
||||||
if (isset($key)) {
|
|
||||||
$identity = new System_SSH_Agent_Identity($this->fsock);
|
|
||||||
$identity->setPublicKey($key);
|
|
||||||
$identity->setPublicKeyBlob($key_blob);
|
|
||||||
$identities[] = $identity;
|
|
||||||
unset($key);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
return $identities;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user