Client::isConnected() - Code Metrics - iPublikuj/websockets-wamp-client - Measure and Improve Code Quality continuously with Scrutinizer

Client::isConnected() A
last analyzed 2018-09-14 20:57 UTC

↳ Parent: Client

Complexity

Conditions	1
Paths	1

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	0
CRAP Score	2

Importance

Changes

Metric	Value
dl	0
loc	4
ccs	0
cts	1
cp	0
rs	10
c	0
b	0
f	0
cc	1
nc	1
nop	0
crap	2

<?php
/**
 * Client.php
 *
 * @copyright      More in license.md
 * @license        https://www.ipublikuj.eu
 * @author         Adam Kadlec <[email protected]>
 * @package        iPublikuj:WebSocketsWAMPClient!
 * @subpackage     Client
 * @since          1.0.0
 *
 * @date           11.05.18
 */

declare(strict_types = 1);

namespace IPub\WebSocketsWAMPClient\Client;

use Nette;
use Nette\Utils;

use React\EventLoop;
use React\Stream;

use IPub\WebSocketsWAMPClient\Exceptions;

/**
 * @method void onConnect()
 * @method void onOpen(array $data)
 * @method void onEvent(string $topic, string $event)
 */
class Client implements IClient
{
	/**
	 * Implement nette smart magic
	 */
	use Nette\SmartObject;

	const VERSION = '0.1.0';

	const TYPE_ID_WELCOME = 0;
	const TYPE_ID_PREFIX = 1;
	const TYPE_ID_CALL = 2;
	const TYPE_ID_CALL_RESULT = 3;
	const TYPE_ID_CALL_ERROR = 4;
	const TYPE_ID_SUBSCRIBE = 5;
	const TYPE_ID_UNSUBSCRIBE = 6;
	const TYPE_ID_PUBLISH = 7;
	const TYPE_ID_EVENT = 8;

	/**
	 * @var \Closure
	 */
	public $onConnect = [];

	/**
	 * @var \Closure
	 */
	public $onOpen = [];

	/**
	 * @var \Closure
	 */
	public $onEvent = [];

	/**
	 * @var EventLoop\LoopInterface
	 */
	private $loop;

	/**
	 * @var Configuration
	 */
	private $configuration;

	/**
	 * @var Stream\DuplexResourceStream
	 */
	private $stream;

	/**
	 * @var bool
	 */
	private $connected = FALSE;

	/**
	 * @var callable[]
	 */
	private $sucessCallbacks = [];

	/**
	 * @var callable[]
	 */
	private $errorCallbacks = [];

	/**
	 * @param EventLoop\LoopInterface $loop
	 * @param Configuration $configuration
	 */
	function __construct(EventLoop\LoopInterface $loop, Configuration $configuration)

	{
		$this->loop = $loop;
		$this->configuration = $configuration;
	}

	/**
	 * Disconnect on destruct
	 */
	function __destruct()

	{
		$this->disconnect();
	}

	/**
	 * {@inheritdoc}
	 */
	public function setLoop(EventLoop\LoopInterface $loop) : void
	{
		$this->loop = $loop;
	}

	/**
	 * {@inheritdoc}
	 */
	public function getLoop() : EventLoop\LoopInterface
	{
		return $this->loop;
	}

	/**
	 * {@inheritdoc}
	 */
	public function connect() : void
	{
		$resource = @stream_socket_client('tcp://' . $this->configuration->getHost() . ':' . $this->configuration->getPort());

		if (!$resource) {
			throw new Exceptions\ConnectionException('Opening socket failed.');
		}

		$this->stream = new Stream\DuplexResourceStream($resource, $this->getLoop());

		$this->stream->on('data', function ($chunk) : void {
			$data = $this->parseChunk($chunk);

			$this->parseData($data);
		});

		$this->stream->on('close', function () : void {
			// When connection is closed, stop loop & end running script
			$this->loop->stop();
		});

		$this->stream->write($this->createHeader());

		$this->onConnect();
	}

	/**
	 * {@inheritdoc}
	 */
	public function disconnect() : void
	{
		$this->connected = FALSE;

		if ($this->stream instanceof Stream\DuplexStreamInterface) {
if ($x instanceof DoesNotExist) {
    // Do something.
}
			$this->stream->close();
		}
	}

	/**
	 * {@inheritdoc}
	 */
	public function isConnected() : bool
	{
		return $this->connected;
	}

	/**
	 * {@inheritdoc}
	 */
	public function publish(string $topicUri, string $event, array $exclude = [], array $eligible = []) : void
	{
		$this->sendData([
			self::TYPE_ID_PUBLISH,
			$topicUri,
			$event,
			$exclude,
			$eligible
		]);
	}

	/**
	 * {@inheritdoc}
	 */
	public function subscribe(string $topicUri) : void
	{
		$this->sendData([
			self::TYPE_ID_SUBSCRIBE,
			$topicUri
		]);
	}

	/**
	 * {@inheritdoc}
	 */
	public function unsubscribe(string $topicUri) : void
	{
		$this->sendData([
			self::TYPE_ID_UNSUBSCRIBE,
			$topicUri
		]);
	}

	/**
	 * {@inheritdoc}
	 */
	public function call(string $processUri, array $args, callable $successCallback = NULL, callable $errorCallback = NULL) : void
	{
		$callId = $this->generateAlphaNumToken(16);

		$this->sucessCallbacks[$callId] = $successCallback;
		$this->errorCallbacks[$callId] = $errorCallback;

		$data = [
			self::TYPE_ID_CALL,
			$callId,
			$processUri,
			$args,
		];

		$this->sendData($data);
	}

	/**
	 * @param mixed $data
	 * @param array $header
	 *
	 * @return void
	 */
	private function receiveData($data, array $header) : void
	{
		if (!$this->isConnected()) {
			$this->disconnect();

			return;
		}

		if (isset($data[0])) {
			switch ($data[0]) {
				case self::TYPE_ID_WELCOME:
					$this->onOpen($data);
					break;

				case self::TYPE_ID_CALL_RESULT:
					if (isset($data[1])) {
						$id = $data[1];

						if (isset($this->sucessCallbacks[$id])) {
							$callback = $this->sucessCallbacks[$id];
							$callback(
								Utils\ArrayHash::from(isset($data[2]) ? (is_array($data[2]) ? $data[2] : [$data[2]]) : [])
							);

							unset($this->sucessCallbacks[$id]);
						}
					}
					break;

				case self::TYPE_ID_CALL_ERROR:
					if (isset($data[1])) {
						$id = $data[1];

						if (isset($this->errorCallbacks[$id])) {
							$callback = $this->errorCallbacks[$id];
							$callback(
								// Topic
								(isset($data[2]) ? (string) $data[2] : NULL),

								// Error exception message
								(isset($data[3]) ? (string) $data[3] : NULL),

								// Additional error data
								Utils\ArrayHash::from(isset($data[4]) ? (is_array($data[4]) ? $data[4] : [$data[4]]) : [])
							);

							unset($this->errorCallbacks[$id]);
						}
					}
					break;

				case self::TYPE_ID_EVENT:
					if (isset($data[1]) && isset($data[2])) {
						$this->onEvent($data[1], $data[2]);
					}
					break;
			}
		}
	}

	/**
	 * @param array $data
	 * @param string $type
	 * @param bool $masked
	 *
	 * @return void
	 *
	 * @throws Utils\JsonException
	 */
	private function sendData(array $data, string $type = 'text', bool $masked = TRUE) : void
	{
		if (!$this->isConnected()) {
			$this->disconnect();

			return;
		}

		$this->stream->write($this->hybi10Encode(Utils\Json::encode($data), $type, $masked));
	}

	/**
	 * Parse received data
	 *
	 * @param array $response
	 *
	 * @return void
	 *
	 * @throws Utils\JsonException
	 */
	private function parseData(array $response) : void
	{
		if (!$this->connected && isset($response['Sec-Websocket-Accept'])) {
			if (base64_encode(pack('H*', sha1($this->configuration->getKey() . '258EAFA5-E914-47DA-95CA-C5AB0DC85B11'))) === $response['Sec-Websocket-Accept']) {
				$this->connected = TRUE;
			}
		}

		if ($this->connected && !empty($response['content'])) {
			$content = str_replace("\r\n", '', trim($response['content']));

			if (preg_match('/(\[[^\]]+\])/', $content, $match)) {
				try {
					$parsedContent = Utils\Json::decode($match[1], Utils\Json::FORCE_ARRAY);

				} catch (Utils\JsonException $ex) {

					$parsedContent = NULL;
				}

				if (is_array($parsedContent)) {
					unset($response['status']);
					unset($response['content']);

					$this->receiveData($parsedContent, $response);
				}
			}
		}
	}

	/**
	 * Create header for web socket client
	 *
	 * @return string
	 */
	private function createHeader() : string
	{
		$host = $this->configuration->getHost();

		if ($host === '127.0.0.1' || $host === '0.0.0.0') {
			$host = 'localhost';
		}

		$origin = $this->configuration->getOrigin() ? $this->configuration->getOrigin() : 'null';

		return
			"GET {$this->configuration->getPath()} HTTP/1.1" . "\r\n" .
			"Origin: {$origin}" . "\r\n" .
			"Host: {$host}:{$this->configuration->getPort()}" . "\r\n" .
			"Sec-WebSocket-Key: {$this->configuration->getKey()}" . "\r\n" .
			"User-Agent: IPubWebSocketClient/" . self::VERSION . "\r\n" .
			"Upgrade: websocket" . "\r\n" .
			"Connection: Upgrade" . "\r\n" .
			"Sec-WebSocket-Protocol: wamp" . "\r\n" .
			"Sec-WebSocket-Version: 13" . "\r\n" . "\r\n";
	}

	/**
	 * Parse raw incoming data
	 *
	 * @param string $header
	 *
	 * @return mixed[]
	 */
	private function parseChunk(string $header) : array
	{
		$parsed = [];

		$content = '';

		$fields = explode("\r\n", preg_replace('/\x0D\x0A[\x09\x20]+/', ' ', $header));

		foreach ($fields as $field) {
			if (preg_match('/([^:]+): (.+)/m', $field, $match)) {
				$match[1] = preg_replace_callback('/(?<=^|[\x09\x20\x2D])./', function ($matches) {
					return strtoupper($matches[0]);
				}, strtolower(trim($match[1])));

				if (isset($parsed[$match[1]])) {
					$parsed[$match[1]] = [$parsed[$match[1]], $match[2]];

				} else {
					$parsed[$match[1]] = trim($match[2]);
				}

			} elseif (preg_match('!HTTP/1\.\d (\d)* .!', $field)) {
				$parsed['status'] = $field;

			} else {
				$content .= $field . "\r\n";
			}
		}

		$parsed['content'] = $content;

		return $parsed;
	}

	/**
	 * Generate token
	 *
	 * @param int $length
	 *
	 * @return string
	 */
	private function generateAlphaNumToken(int $length) : string
	{
		$characters = str_split('abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789');

		srand((int) microtime() * 1000000);

		$token = '';

		do {
			shuffle($characters);
			$token .= $characters[mt_rand(0, (count($characters) - 1))];
		} while (strlen($token) < $length);

		return $token;
	}

	/**
	 * @param string $payload
	 * @param string $type
	 * @param bool $masked
	 *
	 * @return bool|string
	 */
	private function hybi10Encode(string $payload, string $type = 'text', bool $masked = TRUE)
	{
		$frameHead = [];

		$payloadLength = strlen($payload);

		switch ($type) {
			case 'text':
				// First byte indicates FIN, Text-Frame (10000001):
				$frameHead[0] = 129;
				break;

			case 'close':
				// First byte indicates FIN, Close Frame(10001000):
				$frameHead[0] = 136;
				break;

			case 'ping':
				// First byte indicates FIN, Ping frame (10001001):
				$frameHead[0] = 137;
				break;

			case 'pong':
				// First byte indicates FIN, Pong frame (10001010):
				$frameHead[0] = 138;
				break;
		}

		// Set mask and payload length (using 1, 3 or 9 bytes)
		if ($payloadLength > 65535) {
			$payloadLengthBin = str_split(sprintf('%064b', $payloadLength), 8);
			$frameHead[1] = ($masked === TRUE) ? 255 : 127;

			for ($i = 0; $i < 8; $i++) {
				$frameHead[$i + 2] = bindec($payloadLengthBin[$i]);
			}

			// Most significant bit MUST be 0 (close connection if frame too big)
			if ($frameHead[2] > 127) {
				$this->close(1004);

				return FALSE;
			}

		} elseif ($payloadLength > 125) {
			$payloadLengthBin = str_split(sprintf('%016b', $payloadLength), 8);

			$frameHead[1] = ($masked === TRUE) ? 254 : 126;
			$frameHead[2] = bindec($payloadLengthBin[0]);
			$frameHead[3] = bindec($payloadLengthBin[1]);

		} else {
			$frameHead[1] = ($masked === TRUE) ? $payloadLength + 128 : $payloadLength;
		}

		// Convert frame-head to string:
		foreach (array_keys($frameHead) as $i) {
			$frameHead[$i] = chr($frameHead[$i]);
		}

		if ($masked === TRUE) {
			// Generate a random mask:
			$mask = [];

			for ($i = 0; $i < 4; $i++) {
				$mask[$i] = chr(rand(0, 255));
			}

			$frameHead = array_merge($frameHead, $mask);
		}

		$frame = implode('', $frameHead);

		// Append payload to frame:
		for ($i = 0; $i < $payloadLength; $i++) {
			$frame .= ($masked === TRUE) ? $payload[$i] ^ $mask[$i % 4] : $payload[$i];
function myFunction($a) {
    switch ($a) {
        case 'foo':
            $x = 1;
            break;

        case 'bar':
            $x = 2;
            break;
    }

    // $x is potentially undefined here.
    echo $x;
}
		}

		return $frame;
	}

	/**
	 * @param $data
	 *
	 * @return string|NULL
	 */
	private function hybi10Decode($data) : ?string

	{
		if (empty($data)) {
			return NULL;
		}

		$bytes = $data;
		$decodedData = '';
		$secondByte = sprintf('%08b', ord($bytes[1]));
		$masked = ($secondByte[0] == '1') ? TRUE : FALSE;
		$dataLength = ($masked === TRUE) ? ord($bytes[1]) & 127 : ord($bytes[1]);

		if ($masked === TRUE) {
			if ($dataLength === 126) {
				$mask = substr($bytes, 4, 4);
				$coded_data = substr($bytes, 8);

			} elseif ($dataLength === 127) {
				$mask = substr($bytes, 10, 4);
				$coded_data = substr($bytes, 14);

			} else {
				$mask = substr($bytes, 2, 4);
				$coded_data = substr($bytes, 6);
			}

			for ($i = 0; $i < strlen($coded_data); $i++) {
				$decodedData .= $coded_data[$i] ^ $mask[$i % 4];
			}

		} else {
			if ($dataLength === 126) {
				$decodedData = substr($bytes, 4);

			} elseif ($dataLength === 127) {
				$decodedData = substr($bytes, 10);

			} else {
				$decodedData = substr($bytes, 2);
			}
		}

		return $decodedData;
	}
}


Client::isConnected() A
last analyzed 2018-09-14 20:57 UTC

Complexity

Size

Duplication

Code Coverage

Importance

1. Missing dependencies

2. Missing use statement

Available Fixes

1		<?php
2		/**
3		* Client.php
4		*
5		* @copyright More in license.md
6		* @license https://www.ipublikuj.eu
7		* @author Adam Kadlec <[email protected]>
8		* @package iPublikuj:WebSocketsWAMPClient!
9		* @subpackage Client
10		* @since 1.0.0
11		*
12		* @date 11.05.18
13		*/
14
15		declare(strict_types = 1);
16
17		namespace IPub\WebSocketsWAMPClient\Client;
18
19		use Nette;
20		use Nette\Utils;
21
22		use React\EventLoop;
23		use React\Stream;
24
25		use IPub\WebSocketsWAMPClient\Exceptions;
26
27		/**
28		* @method void onConnect()
29		* @method void onOpen(array $data)
30		* @method void onEvent(string $topic, string $event)
31		*/
32	1	class Client implements IClient
33		{
34		/**
35		* Implement nette smart magic
36		*/
37	1	use Nette\SmartObject;
38
39		const VERSION = '0.1.0';
40
41		const TYPE_ID_WELCOME = 0;
42		const TYPE_ID_PREFIX = 1;
43		const TYPE_ID_CALL = 2;
44		const TYPE_ID_CALL_RESULT = 3;
45		const TYPE_ID_CALL_ERROR = 4;
46		const TYPE_ID_SUBSCRIBE = 5;
47		const TYPE_ID_UNSUBSCRIBE = 6;
48		const TYPE_ID_PUBLISH = 7;
49		const TYPE_ID_EVENT = 8;
50
51		/**
52		* @var \Closure
53		*/
54		public $onConnect = [];
55
56		/**
57		* @var \Closure
58		*/
59		public $onOpen = [];
60
61		/**
62		* @var \Closure
63		*/
64		public $onEvent = [];
65
66		/**
67		* @var EventLoop\LoopInterface
68		*/
69		private $loop;
70
71		/**
72		* @var Configuration
73		*/
74		private $configuration;
75
76		/**
77		* @var Stream\DuplexResourceStream
78		*/
79		private $stream;
80
81		/**
82		* @var bool
83		*/
84		private $connected = FALSE;
85
86		/**
87		* @var callable[]
88		*/
89		private $sucessCallbacks = [];
90
91		/**
92		* @var callable[]
93		*/
94		private $errorCallbacks = [];
95
96		/**
97		* @param EventLoop\LoopInterface $loop
98		* @param Configuration $configuration
99		*/
100		function __construct(EventLoop\LoopInterface $loop, Configuration $configuration)
		0 ignored issues – show Best Practice introduced 2018-05-24 18:01 UTC by Report Bug Copy Issue Report It is generally recommended to explicitly declare the visibility for methods. Adding explicit visibility (`private`, `protected`, or `public`) is generally recommend to communicate to other developers how, and from where this method is intended to be used. Loading history...
101		{
102	1	$this->loop = $loop;
103	1	$this->configuration = $configuration;
104	1	}
105
106		/**
107		* Disconnect on destruct
108		*/
109		function __destruct()
		0 ignored issues – show Best Practice introduced 2018-05-11 22:17 UTC by Report Bug Copy Issue Report It is generally recommended to explicitly declare the visibility for methods. Adding explicit visibility (`private`, `protected`, or `public`) is generally recommend to communicate to other developers how, and from where this method is intended to be used. Loading history...
110		{
111	1	$this->disconnect();
112	1	}
113
114		/**
115		* {@inheritdoc}
116		*/
117		public function setLoop(EventLoop\LoopInterface $loop) : void
118		{
119		$this->loop = $loop;
120		}
121
122		/**
123		* {@inheritdoc}
124		*/
125		public function getLoop() : EventLoop\LoopInterface
126		{
127		return $this->loop;
128		}
129
130		/**
131		* {@inheritdoc}
132		*/
133		public function connect() : void
134		{
135		$resource = @stream_socket_client('tcp://' . $this->configuration->getHost() . ':' . $this->configuration->getPort());
136
137		if (!$resource) {
138		throw new Exceptions\ConnectionException('Opening socket failed.');
139		}
140
141		$this->stream = new Stream\DuplexResourceStream($resource, $this->getLoop());
142
143		$this->stream->on('data', function ($chunk) : void {
144		$data = $this->parseChunk($chunk);
145
146		$this->parseData($data);
147		});
148
149		$this->stream->on('close', function () : void {
150		// When connection is closed, stop loop & end running script
151		$this->loop->stop();
152		});
153
154		$this->stream->write($this->createHeader());
155
156		$this->onConnect();
157		}
158
159		/**
160		* {@inheritdoc}
161		*/
162		public function disconnect() : void
163		{
164	1	$this->connected = FALSE;
165
166	1	if ($this->stream instanceof Stream\DuplexStreamInterface) {
		0 ignored issues – show Bug introduced 2018-05-24 18:01 UTC by Report Bug Copy Issue Report The class `React\Stream\DuplexStreamInterface` does not exist. Did you forget a USE statement, or did you not list all dependencies? This error could be the result of: 1. Missing dependencies PHP Analyzer uses your `composer.json` file (if available) to determine the dependencies of your project and to determine all the available classes and functions. It expects the `composer.json` to be in the root folder of your repository. Are you sure this class is defined by one of your dependencies, or did you maybe not list a dependency in either the `require` or `require-dev` section? 2. Missing use statement PHP does not complain about undefined classes in `ìnstanceof` checks. For example, the following PHP code will work perfectly fine: if ($x instanceof DoesNotExist) { // Do something. } If you have not tested against this specific condition, such errors might go unnoticed. Loading history...
167		$this->stream->close();
168		}
169	1	}
170
171		/**
172		* {@inheritdoc}
173		*/
174		public function isConnected() : bool
175		{
176		return $this->connected;
177		}
178
179		/**
180		* {@inheritdoc}
181		*/
182		public function publish(string $topicUri, string $event, array $exclude = [], array $eligible = []) : void
183		{
184		$this->sendData([
185		self::TYPE_ID_PUBLISH,
186		$topicUri,
187		$event,
188		$exclude,
189		$eligible
190		]);
191		}
192
193		/**
194		* {@inheritdoc}
195		*/
196		public function subscribe(string $topicUri) : void
197		{
198		$this->sendData([
199		self::TYPE_ID_SUBSCRIBE,
200		$topicUri
201		]);
202		}
203
204		/**
205		* {@inheritdoc}
206		*/
207		public function unsubscribe(string $topicUri) : void
208		{
209		$this->sendData([
210		self::TYPE_ID_UNSUBSCRIBE,
211		$topicUri
212		]);
213		}
214
215		/**
216		* {@inheritdoc}
217		*/
218		public function call(string $processUri, array $args, callable $successCallback = NULL, callable $errorCallback = NULL) : void
219		{
220		$callId = $this->generateAlphaNumToken(16);
221
222		$this->sucessCallbacks[$callId] = $successCallback;
223		$this->errorCallbacks[$callId] = $errorCallback;
224
225		$data = [
226		self::TYPE_ID_CALL,
227		$callId,
228		$processUri,
229		$args,
230		];
231
232		$this->sendData($data);
233		}
234
235		/**
236		* @param mixed $data
237		* @param array $header
238		*
239		* @return void
240		*/
241		private function receiveData($data, array $header) : void
242		{
243		if (!$this->isConnected()) {
244		$this->disconnect();
245
246		return;
247		}
248
249		if (isset($data[0])) {
250		switch ($data[0]) {
251		case self::TYPE_ID_WELCOME:
252		$this->onOpen($data);
253		break;
254
255		case self::TYPE_ID_CALL_RESULT:
256		if (isset($data[1])) {
257		$id = $data[1];
258
259		if (isset($this->sucessCallbacks[$id])) {
260		$callback = $this->sucessCallbacks[$id];
261		$callback(
262		Utils\ArrayHash::from(isset($data[2]) ? (is_array($data[2]) ? $data[2] : [$data[2]]) : [])
263		);
264
265		unset($this->sucessCallbacks[$id]);
266		}
267		}
268		break;
269
270		case self::TYPE_ID_CALL_ERROR:
271		if (isset($data[1])) {
272		$id = $data[1];
273
274		if (isset($this->errorCallbacks[$id])) {
275		$callback = $this->errorCallbacks[$id];
276		$callback(
277		// Topic
278		(isset($data[2]) ? (string) $data[2] : NULL),
279
280		// Error exception message
281		(isset($data[3]) ? (string) $data[3] : NULL),
282
283		// Additional error data
284		Utils\ArrayHash::from(isset($data[4]) ? (is_array($data[4]) ? $data[4] : [$data[4]]) : [])
285		);
286
287		unset($this->errorCallbacks[$id]);
288		}
289		}
290		break;
291
292		case self::TYPE_ID_EVENT:
293		if (isset($data[1]) && isset($data[2])) {
294		$this->onEvent($data[1], $data[2]);
295		}
296		break;
297		}
298		}
299		}
300
301		/**
302		* @param array $data
303		* @param string $type
304		* @param bool $masked
305		*
306		* @return void
307		*
308		* @throws Utils\JsonException
309		*/
310		private function sendData(array $data, string $type = 'text', bool $masked = TRUE) : void
311		{
312		if (!$this->isConnected()) {
313		$this->disconnect();
314
315		return;
316		}
317
318		$this->stream->write($this->hybi10Encode(Utils\Json::encode($data), $type, $masked));
319		}
320
321		/**
322		* Parse received data
323		*
324		* @param array $response
325		*
326		* @return void
327		*
328		* @throws Utils\JsonException
329		*/
330		private function parseData(array $response) : void
331		{
332		if (!$this->connected && isset($response['Sec-Websocket-Accept'])) {
333		if (base64_encode(pack('H*', sha1($this->configuration->getKey() . '258EAFA5-E914-47DA-95CA-C5AB0DC85B11'))) === $response['Sec-Websocket-Accept']) {
334		$this->connected = TRUE;
335		}
336		}
337
338		if ($this->connected && !empty($response['content'])) {
339		$content = str_replace("\r\n", '', trim($response['content']));
340
341		if (preg_match('/(\[[^\]]+\])/', $content, $match)) {
342		try {
343		$parsedContent = Utils\Json::decode($match[1], Utils\Json::FORCE_ARRAY);
344
345		} catch (Utils\JsonException $ex) {
		0 ignored issues – show Bug introduced 2018-08-22 14:02 UTC by Report Bug Copy Issue Report The class `Nette\Utils\JsonException` does not exist. Did you forget a USE statement, or did you not list all dependencies? Scrutinizer analyzes your `composer.json`/`composer.lock` file if available to determine the classes, and functions that are defined by your dependencies. It seems like the listed class was neither found in your dependencies, nor was it found in the analyzed files in your repository. If you are using some other form of dependency management, you might want to disable this analysis. Loading history...
346		$parsedContent = NULL;
347		}
348
349		if (is_array($parsedContent)) {
350		unset($response['status']);
351		unset($response['content']);
352
353		$this->receiveData($parsedContent, $response);
354		}
355		}
356		}
357		}
358
359		/**
360		* Create header for web socket client
361		*
362		* @return string
363		*/
364		private function createHeader() : string
365		{
366		$host = $this->configuration->getHost();
367
368		if ($host === '127.0.0.1' \|\| $host === '0.0.0.0') {
369		$host = 'localhost';
370		}
371
372		$origin = $this->configuration->getOrigin() ? $this->configuration->getOrigin() : 'null';
373
374		return
375		"GET {$this->configuration->getPath()} HTTP/1.1" . "\r\n" .
376		"Origin: {$origin}" . "\r\n" .
377		"Host: {$host}:{$this->configuration->getPort()}" . "\r\n" .
378		"Sec-WebSocket-Key: {$this->configuration->getKey()}" . "\r\n" .
379		"User-Agent: IPubWebSocketClient/" . self::VERSION . "\r\n" .
380		"Upgrade: websocket" . "\r\n" .
381		"Connection: Upgrade" . "\r\n" .
382		"Sec-WebSocket-Protocol: wamp" . "\r\n" .
383		"Sec-WebSocket-Version: 13" . "\r\n" . "\r\n";
384		}
385
386		/**
387		* Parse raw incoming data
388		*
389		* @param string $header
390		*
391		* @return mixed[]
392		*/
393		private function parseChunk(string $header) : array
394		{
395		$parsed = [];
396
397		$content = '';
398
399		$fields = explode("\r\n", preg_replace('/\x0D\x0A[\x09\x20]+/', ' ', $header));
400
401		foreach ($fields as $field) {
402		if (preg_match('/([^:]+): (.+)/m', $field, $match)) {
403		$match[1] = preg_replace_callback('/(?<=^\|[\x09\x20\x2D])./', function ($matches) {
404		return strtoupper($matches[0]);
405		}, strtolower(trim($match[1])));
406
407		if (isset($parsed[$match[1]])) {
408		$parsed[$match[1]] = [$parsed[$match[1]], $match[2]];
409
410		} else {
411		$parsed[$match[1]] = trim($match[2]);
412		}
413
414		} elseif (preg_match('!HTTP/1\.\d (\d)* .!', $field)) {
415		$parsed['status'] = $field;
416
417		} else {
418		$content .= $field . "\r\n";
419		}
420		}
421
422		$parsed['content'] = $content;
423
424		return $parsed;
425		}
426
427		/**
428		* Generate token
429		*
430		* @param int $length
431		*
432		* @return string
433		*/
434		private function generateAlphaNumToken(int $length) : string
435		{
436		$characters = str_split('abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789');
437
438		srand((int) microtime() * 1000000);
439
440		$token = '';
441
442		do {
443		shuffle($characters);
444		$token .= $characters[mt_rand(0, (count($characters) - 1))];
445		} while (strlen($token) < $length);
446
447		return $token;
448		}
449
450		/**
451		* @param string $payload
452		* @param string $type
453		* @param bool $masked
454		*
455		* @return bool\|string
456		*/
457		private function hybi10Encode(string $payload, string $type = 'text', bool $masked = TRUE)
458		{
459		$frameHead = [];
460
461		$payloadLength = strlen($payload);
462
463		switch ($type) {
464		case 'text':
465		// First byte indicates FIN, Text-Frame (10000001):
466		$frameHead[0] = 129;
467		break;
468
469		case 'close':
470		// First byte indicates FIN, Close Frame(10001000):
471		$frameHead[0] = 136;
472		break;
473
474		case 'ping':
475		// First byte indicates FIN, Ping frame (10001001):
476		$frameHead[0] = 137;
477		break;
478
479		case 'pong':
480		// First byte indicates FIN, Pong frame (10001010):
481		$frameHead[0] = 138;
482		break;
483		}
484
485		// Set mask and payload length (using 1, 3 or 9 bytes)
486		if ($payloadLength > 65535) {
487		$payloadLengthBin = str_split(sprintf('%064b', $payloadLength), 8);
488		$frameHead[1] = ($masked === TRUE) ? 255 : 127;
489
490		for ($i = 0; $i < 8; $i++) {
491		$frameHead[$i + 2] = bindec($payloadLengthBin[$i]);
492		}
493
494		// Most significant bit MUST be 0 (close connection if frame too big)
495		if ($frameHead[2] > 127) {
496		$this->close(1004);
497
498		return FALSE;
499		}
500
501		} elseif ($payloadLength > 125) {
502		$payloadLengthBin = str_split(sprintf('%016b', $payloadLength), 8);
503
504		$frameHead[1] = ($masked === TRUE) ? 254 : 126;
505		$frameHead[2] = bindec($payloadLengthBin[0]);
506		$frameHead[3] = bindec($payloadLengthBin[1]);
507
508		} else {
509		$frameHead[1] = ($masked === TRUE) ? $payloadLength + 128 : $payloadLength;
510		}
511
512		// Convert frame-head to string:
513		foreach (array_keys($frameHead) as $i) {
514		$frameHead[$i] = chr($frameHead[$i]);
515		}
516
517		if ($masked === TRUE) {
518		// Generate a random mask:
519		$mask = [];
520
521		for ($i = 0; $i < 4; $i++) {
522		$mask[$i] = chr(rand(0, 255));
523		}
524
525		$frameHead = array_merge($frameHead, $mask);
526		}
527
528		$frame = implode('', $frameHead);
529
530		// Append payload to frame:
531		for ($i = 0; $i < $payloadLength; $i++) {
532		$frame .= ($masked === TRUE) ? $payload[$i] ^ $mask[$i % 4] : $payload[$i];
		0 ignored issues – show Bug introduced 2018-05-11 22:17 UTC by Report Bug Copy Issue Report The variable `$mask` does not seem to be defined for all execution paths leading up to this point. If you define a variable conditionally, it can happen that it is not defined for all execution paths. Let’s take a look at an example: function myFunction($a) { switch ($a) { case 'foo': $x = 1; break; case 'bar': $x = 2; break; } // $x is potentially undefined here. echo $x; } In the above example, the variable `$x` is defined if you pass “foo” or “bar” as argument for `$a`. However, since the `switch` statement has no default case statement, if you pass any other value, the variable `$x` would be undefined. Available Fixes Check for existence of the variable explicitly: function myFunction($a) { switch ($a) { case 'foo': $x = 1; break; case 'bar': $x = 2; break; } if (isset($x)) { // Make sure it's always set. echo $x; } } Define a default value for the variable: function myFunction($a) { $x = ''; // Set a default which gets overridden for certain paths. switch ($a) { case 'foo': $x = 1; break; case 'bar': $x = 2; break; } echo $x; } Add a value for the missing path: function myFunction($a) { switch ($a) { case 'foo': $x = 1; break; case 'bar': $x = 2; break; // We add support for the missing case. default: $x = ''; break; } echo $x; } Loading history...
533		}
534
535		return $frame;
536		}
537
538		/**
539		* @param $data
540		*
541		* @return string\|NULL
542		*/
543		private function hybi10Decode($data) : ?string
		0 ignored issues – show Unused Code introduced 2018-05-24 18:01 UTC by Report Bug Copy Issue Report This method is not used, and could be removed. Loading history...
544		{
545		if (empty($data)) {
546		return NULL;
547		}
548
549		$bytes = $data;
550		$decodedData = '';
551		$secondByte = sprintf('%08b', ord($bytes[1]));
552		$masked = ($secondByte[0] == '1') ? TRUE : FALSE;
553		$dataLength = ($masked === TRUE) ? ord($bytes[1]) & 127 : ord($bytes[1]);
554
555		if ($masked === TRUE) {
556		if ($dataLength === 126) {
557		$mask = substr($bytes, 4, 4);
558		$coded_data = substr($bytes, 8);
559
560		} elseif ($dataLength === 127) {
561		$mask = substr($bytes, 10, 4);
562		$coded_data = substr($bytes, 14);
563
564		} else {
565		$mask = substr($bytes, 2, 4);
566		$coded_data = substr($bytes, 6);
567		}
568
569		for ($i = 0; $i < strlen($coded_data); $i++) {
570		$decodedData .= $coded_data[$i] ^ $mask[$i % 4];
571		}
572
573		} else {
574		if ($dataLength === 126) {
575		$decodedData = substr($bytes, 4);
576
577		} elseif ($dataLength === 127) {
578		$decodedData = substr($bytes, 10);
579
580		} else {
581		$decodedData = substr($bytes, 2);
582		}
583		}
584
585		return $decodedData;
586		}
587		}
588

iPublikuj / websockets-wamp-client

Client::isConnected() A last analyzed 2018-09-14 20:57 UTC

Complexity

Size

Duplication

Code Coverage

Importance

1. Missing dependencies

2. Missing use statement

Available Fixes

Duplication Side-by-Side

Filter issues like

Client::isConnected() A
last analyzed 2018-09-14 20:57 UTC