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<?php |
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namespace Codeception\Extension; |
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use Codeception\Exception\ModuleException; |
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use Codeception\Exception\ModuleConfigException; |
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use Codeception\Module; |
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use \SplFileObject; |
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use \RuntimeException; |
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use \Exception; |
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class SecureShell extends Module |
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{ |
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const DEFAULT_PORT = 22; |
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const AUTH_PASSWORD = 1; |
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const AUTH_PUBKEY = 2; |
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const AUTH_HOSTKEY = 3; |
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const AUTH_AGENT = 4; |
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const AUTH_NONE = 0; |
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protected $config = []; |
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protected $requiredFields = []; |
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protected static $knownHostsFile = '~/.ssh/known_hosts'; // configuration |
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protected static $acceptUnknownHost = true; // configuration |
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protected $tunnels = []; |
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protected $connections = []; |
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private $output; |
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public function openConnection( $host, |
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$port = SecureShell::DEFAULT_PORT, |
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$auth = SecureShell::AUTH_PASSWORD, |
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...$args) |
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{ |
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$uid = null; |
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$callbacks = array('disconnect' => [$this, '_disconnect']); |
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try { |
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$connection = ssh2_connect($host, $port, $callbacks); |
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if (!$connection) { |
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throw new ModuleException(get_class($this), "Unable to connect to {$host} on port {$port}"); |
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} else { |
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$fp = $this->__checkFingerprint($connection); |
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if ($this->__authenticate($connection, $auth, ...$args) === false) { |
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throw new ModuleException(get_class($this), "Authentication failed on server {$host}:{$port}"); |
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} else { |
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$uid = hash('crc32', uniqid($fp), false); |
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$this->connections = array_merge($this->connections, |
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[$uid => ['host' => $host, |
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'port' => $port, |
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'fingerprint' => $fp, |
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'auth_method' => $auth, |
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'resource' => $connection] |
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]); |
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} |
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} |
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} catch (ModuleException $e) { |
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throw $e; |
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} catch (Exception $e) { |
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throw new ModuleException(get_class($this), $e->getMessage()); |
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} |
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return $uid; |
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} |
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public function closeConnection($uid) { |
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switch ($this->__isValidConnnection($uid)) { |
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case 0: |
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case 1: |
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unset($this->connections[$uid]); |
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break; |
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default: |
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throw new ModuleException(get_class($this), "{$uid} is not a valid SSH connection"); |
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} |
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return true; |
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} |
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public function getConnection($uid) { |
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return $this->connections[$uid]['resource']; |
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} |
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protected function __isValidConnnection($uid) { |
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if (isset($this->connections[$uid])) { |
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if (is_resource($this->connections[$uid]['resource'])) { |
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return 1; |
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} else { |
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return 0; |
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} |
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} else { |
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return -1; |
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} |
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} |
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protected function __authenticate($connection, $method, ...$args) |
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{ |
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switch ($method) { |
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case SecureShell::AUTH_PASSWORD: |
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return ssh2_auth_password($connection, ...$args); |
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case SecureShell::AUTH_PUBKEY: |
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return ssh2_auth_pubkey_file($connection, ...$args); |
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case SecureShell::AUTH_HOSTKEY: |
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return ssh2_auth_hostbased_file($connection, ...$args); |
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case SecureShell::AUTH_AGENT: |
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return ssh2_auth_agent($connection, ...$args); |
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case SecureShell::AUTH_NONE: |
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return ssh2_auth_none($connection, ...$args); |
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default: |
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throw new ModuleException(get_class($this), 'Unsupported authentication method'); |
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} |
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} |
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protected function __checkFingerprint($connection) |
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{ |
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$knownHost = false; |
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try { |
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$fingerprint = ssh2_fingerprint($connection, SSH2_FINGERPRINT_MD5 | SSH2_FINGERPRINT_HEX); |
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$file = new SplFileObject(static::$knownHostsFile); |
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$file->setFlags(SplFileObject::READ_CSV); |
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$file->setCsvControl(' '); |
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foreach ($file as $entry) { |
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list($host, $method, $fp) = $entry; |
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$knownHost = (strcmp($fp, $fingerprint) !== 0); |
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if ($knownHost === true) { |
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break; |
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} |
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} |
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$knownHost = $knownHost || static::$acceptUnknownHost; |
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if ($knownHost === false) { |
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throw new ModuleException(get_class($this), 'Unable to verify server identity!'); |
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} |
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} catch (RuntimeException $e) { |
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if (static::$acceptUnknownHost === false) { |
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throw new ModuleException(get_class($this), 'Unable to verify server identity!'); |
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} |
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} |
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return $fingerprint; |
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} |
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protected function __disconnect() |
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{ |
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foreach ($this->connections as $id => $connection) { |
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if (is_resource($connection['resource']) !== true) { |
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unset($this->connections[$id]); |
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} |
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} |
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} |
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/** Remote Commands methods **/ |
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public function runRemoteCommand($session, $command) |
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{ |
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$connection = $this->getConnection($session); |
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$stream = ssh2_exec($connection, $command); |
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stream_set_blocking($stream, true); |
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$errStream = ssh2_fetch_stream($stream, SSH2_STREAM_STDERR); |
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$this->output['STDOUT'] = stream_get_contents($stream); |
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$this->output['STDERR'] = stream_get_contents($errStream); |
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return $this->output; |
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} |
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public function seeInRemoteOutput($text) |
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{ |
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\PHPUnit_Framework_Assert::assertContains($text, $this->output['STDOUT']); |
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} |
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public function dontSeeInRemoteOutput($text) |
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{ |
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\PHPUnit_Framework_Assert::assertNotContains($text, $this->output['STDOUT']); |
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} |
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/** Remote Files methods **/ |
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public function seeRemoteFile() |
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{ |
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} |
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public function dontSeeRemoteFile() |
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{ |
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} |
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public function grabRemoteFile() |
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{ |
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} |
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public function copyRemoteFile() |
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{ |
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} |
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public function deleteRemoteFile() |
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{ |
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} |
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/** Remote Dir methods **/ |
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public function seeRemoteDir() |
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{ |
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} |
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public function dontSeeRemoteDir() |
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{ |
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} |
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public function copyRemoteDir() |
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{ |
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} |
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public function deleteRemoteDir() |
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{ |
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} |
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public function readRemoteDir() |
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{ |
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} |
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/** Tunnel methods **/ |
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public function openRemoteTunnel() |
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{ |
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} |
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public function closeRemoteTunnel() |
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{ |
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} |
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} |
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This checks looks for assignemnts to variables using the
list(...)
function, where not all assigned variables are subsequently used.Consider the following code example.
Only the variables
$a
and$c
are used. There was no need to assign$b
.Instead, the list call could have been.