/**
* Helper function for agent->_on_channel_open()
*
* Used when channels are created to inform agent
* of said channel opening. Must be called after
* channel open confirmation received
*
* @access private
*/
function _on_channel_open()
{
if (isset($this->agent)) {
$this->agent->_on_channel_open($this);
}
}
/**
* Login with an ssh-agent provided key
*
* @param String $username
* @param System_SSH_Agent $agent
* @return Boolean
* @access private
*/
function _ssh_agent_login($username, $agent)
{
$keys = $agent->requestIdentities();
foreach ($keys as $key) {
if ($this->_privatekey_login($username, $key)) {
return true;
}
}
return false;
}
protected function getSSH()
{
$output = $this->runtimeTask->getOutput();
$input = $this->runtimeTask->getInput();
$ssh = new \Net_SSH2($this->node->getHostOrDefault(), $this->node->getPortOrDefault());
// set up key
$key = new \Crypt_RSA();
if ($this->node->useAgent()) {
// use ssh-agent
if (class_exists('System_SSH_Agent', true) == false) {
require_once 'System/SSH_Agent.php';
}
$key = new \System_SSH_Agent();
} else {
// use ssh key file
if ($this->node->isUsedWithPassphrase()) {
// use passphrase
$key->setPassword($this->node->getPassphrase());
}
if (!$key->loadKey($this->node->getKeyContents())) {
throw new \RuntimeException('Unable to load SSH key file: ' . $this->node->getKeyOrDefault());
}
}
// login
if (!$ssh->login($this->node->getUsernameOrDefault(), $key)) {
$err = error_get_last();
$emessage = isset($err['message']) ? $err['message'] : "";
throw new \RuntimeException('Unable to login ' . $this->node->getName() . ". " . $emessage);
}
return $ssh;
}
