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<?php |
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namespace RouterOS; |
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use RouterOS\Exceptions\ClientException; |
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use RouterOS\Exceptions\ConfigException; |
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/** |
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* Class Client for RouterOS management |
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* |
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* @package RouterOS |
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* @since 0.1 |
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*/ |
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class Client implements Interfaces\ClientInterface |
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{ |
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/** |
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* Socket resource |
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* |
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* @var resource|null |
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*/ |
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private $_socket; |
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/** |
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* Code of error |
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* |
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* @var int |
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*/ |
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private $_socket_err_num; |
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/** |
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* Description of socket error |
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* |
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* @var string |
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*/ |
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private $_socket_err_str; |
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/** |
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* Configuration of connection |
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* |
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* @var \RouterOS\Config |
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*/ |
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private $_config; |
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/** |
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* Client constructor. |
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* |
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* @param array|\RouterOS\Config $config |
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* @throws \RouterOS\Exceptions\ClientException |
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* @throws \RouterOS\Exceptions\ConfigException |
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* @throws \RouterOS\Exceptions\QueryException |
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*/ |
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public function __construct($config) |
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{ |
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// If array then need create object |
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if (\is_array($config)) { |
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$config = new Config($config); |
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} |
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// Check for important keys |
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$this->exceptionIfKeyNotExist(['host', 'user', 'pass'], $config); |
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// Save config if everything is okay |
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$this->setConfig($config); |
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// Throw error if cannot to connect |
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if (false === $this->connect()) { |
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throw new ClientException('Unable to connect to ' . $config->get('host') . ':' . $config->get('port')); |
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} |
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} |
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/** |
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* Check for important keys |
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* |
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* @param array $keys |
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* @param \RouterOS\Config $config |
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* @throws \RouterOS\Exceptions\ConfigException |
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*/ |
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private function exceptionIfKeyNotExist(array $keys, Config $config) |
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{ |
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$parameters = $config->getParameters(); |
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foreach ($keys as $key) { |
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if (!array_key_exists($key, $parameters) && isset($parameters[$key])) { |
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throw new ConfigException("Parameter '$key' of Config is not set or empty"); |
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} |
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} |
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} |
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/** |
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* Get some parameter from config |
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* |
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* @param string $parameter Name of required parameter |
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* @return mixed |
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* @throws \RouterOS\Exceptions\ConfigException |
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*/ |
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private function config(string $parameter) |
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{ |
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return $this->_config->get($parameter); |
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} |
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/** |
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* Return socket resource if is exist |
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* |
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* @return \RouterOS\Config |
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* @since 0.6 |
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*/ |
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public function getConfig(): Config |
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{ |
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return $this->_config; |
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} |
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/** |
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* Set configuration of client |
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* |
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* @param \RouterOS\Config $config |
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* @since 0.7 |
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*/ |
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public function setConfig(Config $config) |
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{ |
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$this->_config = $config; |
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} |
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/** |
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* Encode given length in RouterOS format |
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* |
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* @param string $string |
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* @return string Encoded length |
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* @throws \RouterOS\Exceptions\ClientException |
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*/ |
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private function encodeLength(string $string): string |
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{ |
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$length = \strlen($string); |
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if ($length < 128) { |
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$orig_length = $length; |
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$offset = -1; |
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} elseif ($length < 16384) { |
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$orig_length = $length | 0x8000; |
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$offset = -2; |
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} elseif ($length < 2097152) { |
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$orig_length = $length | 0xC00000; |
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$offset = -3; |
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} elseif ($length < 268435456) { |
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$orig_length = $length | 0xE0000000; |
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$offset = -4; |
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} else { |
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throw new ClientException("Unable to encode length of '$string'"); |
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} |
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// Pack string to binary format |
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$result = pack('I*', $orig_length); |
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// Parse binary string to array |
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$result = str_split($result); |
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// Reverse array |
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$result = array_reverse($result); |
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// Extract values from offset to end of array |
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$result = \array_slice($result, $offset); |
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// Sew items into one line |
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$output = null; |
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foreach ($result as $item) { |
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$output .= $item; |
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} |
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return $output; |
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} |
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/** |
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* Read length of line |
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* |
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* @param int $byte |
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* @return int |
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*/ |
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private function getLength(int $byte): int |
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{ |
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// If the first bit is set then we need to remove the first four bits, shift left 8 |
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// and then read another byte in. |
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// We repeat this for the second and third bits. |
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// If the fourth bit is set, we need to remove anything left in the first byte |
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// and then read in yet another byte. |
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if ($byte & 128) { |
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if (($byte & 192) === 128) { |
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$length = (($byte & 63) << 8) + \ord(fread($this->_socket, 1)); |
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} else { |
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if (($byte & 224) === 192) { |
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$length = (($byte & 31) << 8) + \ord(fread($this->_socket, 1)); |
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$length = ($length << 8) + \ord(fread($this->_socket, 1)); |
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} else { |
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if (($byte & 240) === 224) { |
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$length = (($byte & 15) << 8) + \ord(fread($this->_socket, 1)); |
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$length = ($length << 8) + \ord(fread($this->_socket, 1)); |
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$length = ($length << 8) + \ord(fread($this->_socket, 1)); |
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} else { |
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$length = \ord(fread($this->_socket, 1)); |
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$length = ($length << 8) + \ord(fread($this->_socket, 1)) * 3; |
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$length = ($length << 8) + \ord(fread($this->_socket, 1)); |
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$length = ($length << 8) + \ord(fread($this->_socket, 1)); |
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} |
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} |
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} |
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} else { |
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$length = $byte; |
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} |
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return $length; |
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} |
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/** |
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* Send write query to RouterOS (with or without tag) |
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* |
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* @param \RouterOS\Query $query |
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* @return \RouterOS\Client |
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* @throws \RouterOS\Exceptions\ClientException |
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* @throws \RouterOS\Exceptions\QueryException |
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*/ |
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public function write(Query $query): Client |
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{ |
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// Send commands via loop to router |
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foreach ($query->getQuery() as $command) { |
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$command = trim($command); |
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fwrite($this->_socket, $this->encodeLength($command) . $command); |
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} |
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// Write zero-terminator |
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fwrite($this->_socket, \chr(0)); |
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return $this; |
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} |
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/** |
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* Read answer from server after query was executed |
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* |
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* @param bool $parse |
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* @return array |
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*/ |
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public function read(bool $parse = true): array |
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{ |
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// By default response is empty |
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$response = []; |
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// Read answer from socket in loop |
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while (true) { |
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// Read the first byte of input which gives us some or all of the length |
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// of the remaining reply. |
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$byte = fread($this->_socket, 1); |
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$length = $this->getLength(\ord($byte)); |
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// Save only non empty strings |
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if ($length > 0) { |
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// Save output line to response array |
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$response[] = stream_get_contents($this->_socket, $length); |
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} else { |
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// Read next line |
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stream_get_contents($this->_socket, $length); |
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} |
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// If we get a !done line in response, change state of $isDone variable |
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$isDone = ('!done' === end($response)); |
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// Get status about latest operation |
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$status = stream_get_meta_data($this->_socket); |
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// If we do not have unread bytes from socket or <-same and if done, then exit from loop |
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if ((!$status['unread_bytes']) || (!$status['unread_bytes'] && $isDone)) { |
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break; |
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} |
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} |
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// Parse results and return |
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return $parse ? $this->parseResponse($response) : $response; |
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} |
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/** |
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* Alias for ->write() method |
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* |
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* @param \RouterOS\Query $query |
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* @return \RouterOS\Client |
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* @throws \RouterOS\Exceptions\ClientException |
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* @throws \RouterOS\Exceptions\QueryException |
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*/ |
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public function w(Query $query): Client |
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{ |
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return $this->write($query); |
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} |
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284
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/** |
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* Alias for ->read() method |
286
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* |
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* @param bool $parse |
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* @return array |
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* @since 0.7 |
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*/ |
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public function r(bool $parse = true): array |
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{ |
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return $this->read($parse); |
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} |
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296
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/** |
297
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* Alias for ->write()->read() combination of methods |
298
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* |
299
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* @param \RouterOS\Query $query |
300
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* @param bool $parse |
301
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* @return array |
302
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* @throws \RouterOS\Exceptions\ClientException |
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* @throws \RouterOS\Exceptions\QueryException |
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* @since 0.6 |
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*/ |
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public function wr(Query $query, bool $parse = true): array |
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{ |
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return $this->write($query)->read($parse); |
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} |
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311
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/** |
312
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* Parse response from Router OS |
313
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* |
314
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* @param array $response Response data |
315
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* @return array Array with parsed data |
316
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*/ |
317
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1 |
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private function parseResponse(array $response): array |
318
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{ |
319
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1 |
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$result = []; |
320
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1 |
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$i = -1; |
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1 |
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$lines = \count($response); |
322
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1 |
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foreach ($response as $key => $value) { |
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switch ($value) { |
324
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1 |
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case '!re': |
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$i++; |
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break; |
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1 |
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case '!fatal': |
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$result = $response; |
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break 2; |
330
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1 |
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case '!trap': |
331
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1 |
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case '!done': |
332
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// Check for =ret=, .tag and any other following messages |
333
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1 |
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for ($j = $key + 1; $j <= $lines; $j++) { |
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// If we have lines after current one |
335
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1 |
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if (isset($response[$j])) { |
336
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1 |
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$this->pregResponse($response[$j], $matches); |
337
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1 |
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if (!empty($matches)) { |
338
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1 |
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$result['after'][$matches[1][0]] = $matches[2][0]; |
339
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} |
340
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} |
341
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} |
342
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1 |
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break 2; |
343
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default: |
344
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$this->pregResponse($value, $matches); |
345
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if (!empty($matches)) { |
346
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$result[$i][$matches[1][0]] = $matches[2][0]; |
347
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} |
348
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break; |
349
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} |
350
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} |
351
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1 |
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return $result; |
352
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} |
353
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354
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/** |
355
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* Parse result from RouterOS by regular expression |
356
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* |
357
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* @param string $value |
358
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* @param array $matches |
359
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*/ |
360
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1 |
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private function pregResponse(string $value, &$matches) |
361
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{ |
362
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1 |
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preg_match_all('/^[=|\.](.*)=(.*)/', $value, $matches); |
363
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1 |
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} |
364
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|
365
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/** |
366
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* Authorization logic |
367
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* |
368
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* @return bool |
369
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* @throws \RouterOS\Exceptions\ClientException |
370
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* @throws \RouterOS\Exceptions\ConfigException |
371
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* @throws \RouterOS\Exceptions\QueryException |
372
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*/ |
373
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4 |
|
private function login(): bool |
374
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{ |
375
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// If legacy login scheme is enabled |
376
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4 |
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if ($this->config('legacy')) { |
377
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// For the first we need get hash with salt |
378
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1 |
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$query = new Query('/login'); |
379
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1 |
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$response = $this->write($query)->read(); |
380
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|
381
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// Now need use this hash for authorization |
382
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1 |
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$query = (new Query('/login')) |
383
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1 |
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->add('=name=' . $this->config('user')) |
384
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1 |
|
->add('=response=00' . md5(\chr(0) . $this->config('pass') . pack('H*', $response['after']['ret']))); |
385
|
|
|
} else { |
386
|
|
|
// Just login with our credentials |
387
|
3 |
|
$query = (new Query('/login')) |
388
|
3 |
|
->add('=name=' . $this->config('user')) |
389
|
3 |
|
->add('=password=' . $this->config('pass')); |
390
|
|
|
} |
391
|
|
|
|
392
|
|
|
// Execute query and get response |
393
|
4 |
|
$response = $this->write($query)->read(false); |
394
|
|
|
|
395
|
|
|
// Return true if we have only one line from server and this line is !done |
396
|
4 |
|
return isset($response[0]) && $response[0] === '!done'; |
397
|
|
|
} |
398
|
|
|
|
399
|
|
|
/** |
400
|
|
|
* Connect to socket server |
401
|
|
|
* |
402
|
|
|
* @return bool |
403
|
|
|
* @throws \RouterOS\Exceptions\ClientException |
404
|
|
|
* @throws \RouterOS\Exceptions\ConfigException |
405
|
|
|
* @throws \RouterOS\Exceptions\QueryException |
406
|
|
|
*/ |
407
|
5 |
|
private function connect(): bool |
408
|
|
|
{ |
409
|
|
|
// By default we not connected |
410
|
5 |
|
$connected = false; |
411
|
|
|
|
412
|
|
|
// Few attempts in loop |
413
|
5 |
|
for ($attempt = 1; $attempt <= $this->config('attempts'); $attempt++) { |
414
|
|
|
|
415
|
|
|
// Initiate socket session |
416
|
5 |
|
$this->openSocket(); |
417
|
|
|
|
418
|
|
|
// If socket is active |
419
|
4 |
|
if ($this->getSocket()) { |
420
|
|
|
|
421
|
|
|
// If we logged in then exit from loop |
422
|
4 |
|
if (true === $this->login()) { |
423
|
4 |
|
$connected = true; |
424
|
4 |
|
break; |
425
|
|
|
} |
426
|
|
|
|
427
|
|
|
// Else close socket and start from begin |
428
|
|
|
$this->closeSocket(); |
429
|
|
|
} |
430
|
|
|
|
431
|
|
|
// Sleep some time between tries |
432
|
|
|
sleep($this->config('delay')); |
433
|
|
|
} |
434
|
|
|
|
435
|
|
|
// Return status of connection |
436
|
4 |
|
return $connected; |
437
|
|
|
} |
438
|
|
|
|
439
|
|
|
/** |
440
|
|
|
* Save socket resource to static variable |
441
|
|
|
* |
442
|
|
|
* @param resource $socket |
443
|
|
|
*/ |
444
|
4 |
|
private function setSocket($socket) |
445
|
|
|
{ |
446
|
4 |
|
$this->_socket = $socket; |
447
|
4 |
|
} |
448
|
|
|
|
449
|
|
|
/** |
450
|
|
|
* Return socket resource if is exist |
451
|
|
|
* |
452
|
|
|
* @return resource |
453
|
|
|
*/ |
454
|
4 |
|
public function getSocket() |
455
|
|
|
{ |
456
|
4 |
|
return $this->_socket; |
457
|
|
|
} |
458
|
|
|
|
459
|
|
|
/** |
460
|
|
|
* Initiate socket session |
461
|
|
|
* |
462
|
|
|
* @throws \RouterOS\Exceptions\ClientException |
463
|
|
|
* @throws \RouterOS\Exceptions\ConfigException |
464
|
|
|
*/ |
465
|
5 |
|
private function openSocket() |
466
|
|
|
{ |
467
|
|
|
// Default: Context for ssl |
468
|
5 |
|
$context = stream_context_create([ |
469
|
5 |
|
'ssl' => [ |
470
|
|
|
'ciphers' => 'ADH:ALL', |
471
|
|
|
'verify_peer' => false, |
472
|
|
|
'verify_peer_name' => false |
473
|
|
|
] |
474
|
|
|
]); |
475
|
|
|
|
476
|
|
|
// Default: Proto tcp:// but for ssl we need ssl:// |
477
|
5 |
|
$proto = $this->config('ssl') ? 'ssl://' : ''; |
478
|
|
|
|
479
|
|
|
// Initiate socket client |
480
|
5 |
|
$socket = @stream_socket_client( |
481
|
5 |
|
$proto . $this->config('host') . ':' . $this->config('port'), |
482
|
5 |
|
$this->_socket_err_num, |
483
|
5 |
|
$this->_socket_err_str, |
484
|
5 |
|
$this->config('timeout'), |
485
|
5 |
|
STREAM_CLIENT_CONNECT, |
486
|
5 |
|
$context |
487
|
|
|
); |
488
|
|
|
|
489
|
|
|
// Throw error is socket is not initiated |
490
|
5 |
|
if (!$socket) { |
491
|
1 |
|
throw new ClientException('Unable to establish socket session, ' . $this->_socket_err_str); |
492
|
|
|
} |
493
|
|
|
|
494
|
|
|
// Save socket to static variable |
495
|
4 |
|
return $this->setSocket($socket); |
496
|
|
|
} |
497
|
|
|
|
498
|
|
|
/** |
499
|
|
|
* Close socket session |
500
|
|
|
* |
501
|
|
|
* @return bool |
502
|
|
|
*/ |
503
|
|
|
private function closeSocket(): bool |
504
|
|
|
{ |
505
|
|
|
return fclose($this->_socket); |
506
|
|
|
} |
507
|
|
|
} |
508
|
|
|
|