Client::keysCheck() - Code Metrics - Inspection of "exceptions added" - EvilFreelancer/routeros-api-php - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 52e6bb...f12d15 )

by Mr

created 2018-08-24 11:29 UTC

Client::keysCheck() A

↳ Parent: Client

Complexity

Conditions	4
Paths	3

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	0
CRAP Score	20

Importance

Changes

Metric	Value
dl	0
loc	9
ccs	0
cts	6
cp	0
rs	9.9666
c	0
b	0
f	0
cc	4
nc	3
nop	2
crap	20

<?php

namespace RouterOS;

use RouterOS\Exceptions\ClientException;
use RouterOS\Exceptions\ConfigException;
use RouterOS\Exceptions\Exception;
use RouterOS\Interfaces\ClientInterface;
use RouterOS\Interfaces\ConfigInterface;
use RouterOS\Interfaces\QueryInterface;

/**
 * Class Client for RouterOS management
 * @package RouterOS
 * @since 0.1
 */
class Client implements Interfaces\ClientInterface
{
    /**
     * Socket resource
     * @var resource|null
     */
    private $_socket;

    /**
     * Code of error
     * @var int
     */
    private $_socket_err_num;

    /**
     * Description of socket error
     * @var string
     */
    private $_socket_err_str;

    /**
     * Configuration of connection
     * @var ConfigInterface
     */
    private $_config;

    /**
     * Client constructor.
     *
     * @param   ConfigInterface $config
     * @throws  ConfigException
     * @throws  ClientException
     */
    public function __construct(ConfigInterface $config)
    {
        // Check for important keys
        $this->keysCheck(['host', 'user', 'pass'], $config);

        // Save config if everything is okay
        $this->_config = $config;

        // Throw error if cannot to connect
        if (false === $this->connect()) {
            throw new ClientException('Unable to connect to ' . $config->get('host') . ':' . $config->get('port'));
        }
    }

    /**
     * Check for important keys
     *
     * @param   array $keys
     * @param   ConfigInterface $config
     * @throws  ConfigException
     */
    private function keysCheck(array $keys, ConfigInterface $config)
    {
        $parameters = $config->getParameters();
        foreach ($keys as $key) {
            if (false === (array_key_exists($key, $parameters) && isset($parameters[$key]))) {
                throw new ConfigException("Parameter '$key' of Config is not set or empty");
            }
        }
    }

    /**
     * Get some parameter from config
     *
     * @param   string $parameter
     * @return  mixed
     */
    private function config(string $parameter)
    {
        return $this->_config->get($parameter);
    }

    /**
     * Convert ordinary string to hex string
     *
     * @param   string $string
     * @return  string
     */
    private function encodeLength(string $string): string
    {
        // Yeah, that's insane, but was more ugly, you need read this post if you interesting a details:
        // https://wiki.mikrotik.com/wiki/Manual:API#API_words
        switch (true) {
            case ($string < 0x80):
                $string = \chr($string);
                break;
            case ($string < 0x4000):
                $string |= 0x8000;
                $string = \chr(($string >> 8) & 0xFF) . \chr($string & 0xFF);
                break;
            case ($string < 0x200000):
                $string |= 0xC00000;
                $string = \chr(($string >> 16) & 0xFF) . \chr(($string >> 8) & 0xFF) . \chr($string & 0xFF);
                break;
            case ($string < 0x10000000):

                $string |= 0xE0000000;
                $string = \chr(($string >> 24) & 0xFF) . \chr(($string >> 16) & 0xFF) . \chr(($string >> 8) & 0xFF) . \chr($string & 0xFF);
                break;
            case ($string >= 0x10000000):

                $string = \chr(0xF0) . \chr(($string >> 24) & 0xFF) . \chr(($string >> 16) & 0xFF) . \chr(($string >> 8) & 0xFF) . \chr($string & 0xFF);
                break;
        }

        return $string;
    }

    /**
     * Read length of line
     *
     * @param   int $byte
     * @return  int
     */
    private function getLength(int $byte): int
    {
        // If the first bit is set then we need to remove the first four bits, shift left 8
        // and then read another byte in.
        // We repeat this for the second and third bits.
        // If the fourth bit is set, we need to remove anything left in the first byte
        // and then read in yet another byte.
        $length = 0;
$myVar = 'Value';
$higher = false;

if (rand(1, 6) > 3) {
    $higher = true;
} else {
    $higher = false;
}
        if ($byte & 128) {
            if (($byte & 192) === 128) {
                $length = (($byte & 63) << 8) + \ord(fread($this->_socket, 1));
            } else {
                if (($byte & 224) === 192) {
                    $length = (($byte & 31) << 8) + \ord(fread($this->_socket, 1));
                    $length = ($length << 8) + \ord(fread($this->_socket, 1));
                } else {
                    if (($byte & 240) === 224) {
                        $length = (($byte & 15) << 8) + \ord(fread($this->_socket, 1));
                        $length = ($length << 8) + \ord(fread($this->_socket, 1));
                        $length = ($length << 8) + \ord(fread($this->_socket, 1));
                    } else {
                        $length = \ord(fread($this->_socket, 1));
                        $length = ($length << 8) + \ord(fread($this->_socket, 1)) * 3;
                        $length = ($length << 8) + \ord(fread($this->_socket, 1));
                        $length = ($length << 8) + \ord(fread($this->_socket, 1));
                    }
                }
            }
        } else {
            $length = $byte;
        }
        return $length;
    }

    /**
     * Send write query to RouterOS (with or without tag)
     *
     * @param   QueryInterface $query
     * @return  ClientInterface
     */
    public function write(QueryInterface $query): ClientInterface
    {
        // Send commands via loop to router
        foreach ($query->getQuery() as $command) {
            $command = trim($command);
            fwrite($this->_socket, $this->encodeLength(\strlen($command)) . $command);
        }

        // Write zero-terminator
        fwrite($this->_socket, \chr(0));

        return $this;
    }

//    public function read2(bool $parse = true): array

//    {
//        while (true) {
//
//            $res = '';
//            while ($buf = fread($this->_socket, 1)) {
//                if (substr($res, -5) === '!done') {
//                    echo 'done';
//                    break 2;
//                }
//                echo "$buf\n";
//                $res .= $buf;
//            }
//            $result[] = $res;
//        }
//        print_r($result);
//        die();
//    }

    /**
     * Read answer from server after query was executed
     *
     * @param   bool $parse
     * @return  array
     */
    public function read(bool $parse = true): array
    {
        // By default response is empty
        $response = [];

        // Read answer from socket in loop
        while (true) {
            // Read the first byte of input which gives us some or all of the length
            // of the remaining reply.
            $byte = \ord(fread($this->_socket, 1));

            // Read length of line
            $length = $this->getLength($byte);

            // Save output line to response array
            $response[] = stream_get_contents($this->_socket, $length);

            // If we get a !done line in response, change state of $isDone variable
            $isDone = ('!done' === end($response));

            // Get status about latest operation
            $status = stream_get_meta_data($this->_socket);

            // If we do not have unread bytes from socket or <-same and if done, then exit from loop
            if ((!$status['unread_bytes']) || (!$status['unread_bytes'] && $isDone)) {
                break;
            }
        }

        // Parse results and return
        return $parse ? $this->parseResponse($response) : $response;
    }

    /**
     * Parse response from Router OS
     *
     * @param   array $response Response data
     * @return  array Array with parsed data
     */
    private function parseResponse(array $response): array
    {
        $result = [];
        $i = -1;
        foreach ($response as $value) {
            switch ($value) {
                case '!re':
                    $i++;
                    break;
                case '!fatal':
                case '!trap':
                case '!done':
                    break 2;
                default:
                    if (preg_match_all('/^=(.*)=(.*)/', $value, $matches)) {
                        $result[$i][$matches[1][0]] = $matches[2][0];
                    }
                    break;
            }
        }
        return $result;
    }

    /**
     * Authorization logic
     *
     * @return  bool
     */
    private function login(): bool
    {
        // If legacy login scheme is enabled
        if ($this->config('legacy')) {
            // For the first we need get hash with salt
            $query = new Query('/login');
            $response = $this->write($query)->read(false);

            // Now need use this hash for authorization
            $query = (new Query('/login'))
                ->add('=name=' . $this->config('user'))
                ->add('=response=00' . md5(\chr(0) . $this->config('pass') . pack('H*', $response[1])));
        } else {
            // Just login with our credentials
            $query = (new Query('/login'))
                ->add('=name=' . $this->config('user'))
                ->add('=password=' . $this->config('pass'));
        }

        // Execute query and get response
        $response = $this->write($query)->read(false);

        // Return true if we have only one line from server and this line is !done
        return isset($response[0]) && $response[0] === '!done';
    }

    /**
     * Connect to socket server
     *
     * @return  bool
     */
    public function connect(): bool
    {
        // By default we not connected
        $connected = false;

        // Few attempts in loop
        for ($attempt = 1; $attempt <= $this->config('attempts'); $attempt++) {

            // Initiate socket session
            $this->openSocket();

            // If socket is active
            if ($this->getSocket()) {

                // If we logged in then exit from loop
                if (true === $this->login()) {
                    $connected = true;
                    break;
                }

                // Else close socket and start from begin
                $this->closeSocket();
            }

            // Sleep some time between tries
            sleep($this->config('delay'));
        }

        // Return status of connection
        return $connected;
    }

    /**
     * Save socket resource to static variable
     *
     * @param   resource|null $socket
     * @return  bool
     */
    private function setSocket($socket): bool
    {
        if (\is_resource($socket)) {
            $this->_socket = $socket;
            return true;
        }
        return false;
    }

    /**
     * Return socket resource if is exist
     *
     * @return  bool|resource
     */
    public function getSocket()
    {
        return \is_resource($this->_socket)
            ? $this->_socket
            : false;
    }

    /**
     * Initiate socket session
     *
     * @return  bool
     * @throws  ClientException
     */
    private function openSocket(): bool
    {
        // Connect to server
        $socket = false;
$myVar = 'Value';
$higher = false;

if (rand(1, 6) > 3) {
    $higher = true;
} else {
    $higher = false;
}

        // Default: Context for ssl
        $context = stream_context_create([
            'ssl' => [
                'ciphers' => 'ADH:ALL',
                'verify_peer' => false,
                'verify_peer_name' => false
            ]
        ]);

        // Default: Proto tcp:// but for ssl we need ssl://
        $proto = $this->config('ssl') ? 'ssl://' : '';

        // Initiate socket client
        $socket = stream_socket_client(
            $proto . $this->config('host') . ':' . $this->config('port'),
            $this->_socket_err_num,
            $this->_socket_err_str,
            $this->config('timeout'),
            STREAM_CLIENT_CONNECT,
            $context
        );

        // Throw error is socket is not initiated
        if (false === $socket) {
            throw new ClientException('stream_socket_client() failed: code: ' . $this->_socket_err_num . ' reason: ' . $this->_socket_err_str);
        }

        // Save socket to static variable
        return $this->setSocket($socket);
    }

    /**
     * Close socket session
     *
     * @return bool
     */
    private function closeSocket(): bool
    {
        return fclose($this->_socket);
    }
}


1		<?php
2
3		namespace RouterOS;
4
5		use RouterOS\Exceptions\ClientException;
6		use RouterOS\Exceptions\ConfigException;
7		use RouterOS\Exceptions\Exception;
8		use RouterOS\Interfaces\ClientInterface;
9		use RouterOS\Interfaces\ConfigInterface;
10		use RouterOS\Interfaces\QueryInterface;
11
12		/**
13		* Class Client for RouterOS management
14		* @package RouterOS
15		* @since 0.1
16		*/
17		class Client implements Interfaces\ClientInterface
18		{
19		/**
20		* Socket resource
21		* @var resource\|null
22		*/
23		private $_socket;
24
25		/**
26		* Code of error
27		* @var int
28		*/
29		private $_socket_err_num;
30
31		/**
32		* Description of socket error
33		* @var string
34		*/
35		private $_socket_err_str;
36
37		/**
38		* Configuration of connection
39		* @var ConfigInterface
40		*/
41		private $_config;
42
43		/**
44		* Client constructor.
45		*
46		* @param ConfigInterface $config
47		* @throws ConfigException
48		* @throws ClientException
49		*/
50		public function __construct(ConfigInterface $config)
51		{
52		// Check for important keys
53		$this->keysCheck(['host', 'user', 'pass'], $config);
54
55		// Save config if everything is okay
56		$this->_config = $config;
57
58		// Throw error if cannot to connect
59		if (false === $this->connect()) {
60		throw new ClientException('Unable to connect to ' . $config->get('host') . ':' . $config->get('port'));
61		}
62		}
63
64		/**
65		* Check for important keys
66		*
67		* @param array $keys
68		* @param ConfigInterface $config
69		* @throws ConfigException
70		*/
71		private function keysCheck(array $keys, ConfigInterface $config)
72		{
73		$parameters = $config->getParameters();
74		foreach ($keys as $key) {
75		if (false === (array_key_exists($key, $parameters) && isset($parameters[$key]))) {
76		throw new ConfigException("Parameter '$key' of Config is not set or empty");
77		}
78		}
79		}
80
81		/**
82		* Get some parameter from config
83		*
84		* @param string $parameter
85		* @return mixed
86		*/
87		private function config(string $parameter)
88		{
89		return $this->_config->get($parameter);
90		}
91
92		/**
93		* Convert ordinary string to hex string
94		*
95		* @param string $string
96		* @return string
97		*/
98		private function encodeLength(string $string): string
99		{
100		// Yeah, that's insane, but was more ugly, you need read this post if you interesting a details:
101		// https://wiki.mikrotik.com/wiki/Manual:API#API_words
102		switch (true) {
103		case ($string < 0x80):
104		$string = \chr($string);
105		break;
106		case ($string < 0x4000):
107		$string \|= 0x8000;
108		$string = \chr(($string >> 8) & 0xFF) . \chr($string & 0xFF);
109		break;
110		case ($string < 0x200000):
111		$string \|= 0xC00000;
112		$string = \chr(($string >> 16) & 0xFF) . \chr(($string >> 8) & 0xFF) . \chr($string & 0xFF);
113		break;
114	View Code Duplication	case ($string < 0x10000000):
		0 ignored issues – show Duplication introduced 2018-08-19 19:52 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
115		$string \|= 0xE0000000;
116		$string = \chr(($string >> 24) & 0xFF) . \chr(($string >> 16) & 0xFF) . \chr(($string >> 8) & 0xFF) . \chr($string & 0xFF);
117		break;
118	View Code Duplication	case ($string >= 0x10000000):
		0 ignored issues – show Duplication introduced 2018-08-21 00:56 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
119		$string = \chr(0xF0) . \chr(($string >> 24) & 0xFF) . \chr(($string >> 16) & 0xFF) . \chr(($string >> 8) & 0xFF) . \chr($string & 0xFF);
120		break;
121		}
122
123		return $string;
124		}
125
126		/**
127		* Read length of line
128		*
129		* @param int $byte
130		* @return int
131		*/
132		private function getLength(int $byte): int
133		{
134		// If the first bit is set then we need to remove the first four bits, shift left 8
135		// and then read another byte in.
136		// We repeat this for the second and third bits.
137		// If the fourth bit is set, we need to remove anything left in the first byte
138		// and then read in yet another byte.
139		$length = 0;
		0 ignored issues – show Unused Code introduced 2018-08-22 01:40 UTC by Report Bug Copy Issue Report `$length` is not used, you could remove the assignment. This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently. $myVar = 'Value'; $higher = false; if (rand(1, 6) > 3) { $higher = true; } else { $higher = false; } Both the `$myVar` assignment in line 1 and the `$higher` assignment in line 2 are dead. The first because `$myVar` is never used and the second because `$higher` is always overwritten for every possible time line. Loading history...
140		if ($byte & 128) {
141		if (($byte & 192) === 128) {
142		$length = (($byte & 63) << 8) + \ord(fread($this->_socket, 1));
143		} else {
144		if (($byte & 224) === 192) {
145		$length = (($byte & 31) << 8) + \ord(fread($this->_socket, 1));
146		$length = ($length << 8) + \ord(fread($this->_socket, 1));
147		} else {
148		if (($byte & 240) === 224) {
149		$length = (($byte & 15) << 8) + \ord(fread($this->_socket, 1));
150		$length = ($length << 8) + \ord(fread($this->_socket, 1));
151		$length = ($length << 8) + \ord(fread($this->_socket, 1));
152		} else {
153		$length = \ord(fread($this->_socket, 1));
154		$length = ($length << 8) + \ord(fread($this->_socket, 1)) * 3;
155		$length = ($length << 8) + \ord(fread($this->_socket, 1));
156		$length = ($length << 8) + \ord(fread($this->_socket, 1));
157		}
158		}
159		}
160		} else {
161		$length = $byte;
162		}
163		return $length;
164		}
165
166		/**
167		* Send write query to RouterOS (with or without tag)
168		*
169		* @param QueryInterface $query
170		* @return ClientInterface
171		*/
172		public function write(QueryInterface $query): ClientInterface
173		{
174		// Send commands via loop to router
175		foreach ($query->getQuery() as $command) {
176		$command = trim($command);
177		fwrite($this->_socket, $this->encodeLength(\strlen($command)) . $command);
178		}
179
180		// Write zero-terminator
181		fwrite($this->_socket, \chr(0));
182
183		return $this;
184		}
185
186		// public function read2(bool $parse = true): array
		0 ignored issues – show Unused Code Comprehensibility introduced 2018-08-24 11:31 UTC by Report Bug Copy Issue Report `48%` of this comment could be valid code. Did you maybe forget this after debugging? Sometimes obsolete code just ends up commented out instead of removed. In this case it is better to remove the code once you have checked you do not need it. The code might also have been commented out for debugging purposes. In this case it is vital that someone uncomments it again or your project may behave in very unexpected ways in production. This check looks for comments that seem to be mostly valid code and reports them. Loading history...
187		// {
188		// while (true) {
189		//
190		// $res = '';
191		// while ($buf = fread($this->_socket, 1)) {
192		// if (substr($res, -5) === '!done') {
193		// echo 'done';
194		// break 2;
195		// }
196		// echo "$buf\n";
197		// $res .= $buf;
198		// }
199		// $result[] = $res;
200		// }
201		// print_r($result);
202		// die();
203		// }
204
205		/**
206		* Read answer from server after query was executed
207		*
208		* @param bool $parse
209		* @return array
210		*/
211		public function read(bool $parse = true): array
212		{
213		// By default response is empty
214		$response = [];
215
216		// Read answer from socket in loop
217		while (true) {
218		// Read the first byte of input which gives us some or all of the length
219		// of the remaining reply.
220		$byte = \ord(fread($this->_socket, 1));
221
222		// Read length of line
223		$length = $this->getLength($byte);
224
225		// Save output line to response array
226		$response[] = stream_get_contents($this->_socket, $length);
227
228		// If we get a !done line in response, change state of $isDone variable
229		$isDone = ('!done' === end($response));
230
231		// Get status about latest operation
232		$status = stream_get_meta_data($this->_socket);
233
234		// If we do not have unread bytes from socket or <-same and if done, then exit from loop
235		if ((!$status['unread_bytes']) \|\| (!$status['unread_bytes'] && $isDone)) {
236		break;
237		}
238		}
239
240		// Parse results and return
241		return $parse ? $this->parseResponse($response) : $response;
242		}
243
244		/**
245		* Parse response from Router OS
246		*
247		* @param array $response Response data
248		* @return array Array with parsed data
249		*/
250		private function parseResponse(array $response): array
251		{
252		$result = [];
253		$i = -1;
254		foreach ($response as $value) {
255		switch ($value) {
256		case '!re':
257		$i++;
258		break;
259		case '!fatal':
260		case '!trap':
261		case '!done':
262		break 2;
263		default:
264		if (preg_match_all('/^=(.)=(.)/', $value, $matches)) {
265		$result[$i][$matches[1][0]] = $matches[2][0];
266		}
267		break;
268		}
269		}
270		return $result;
271		}
272
273		/**
274		* Authorization logic
275		*
276		* @return bool
277		*/
278		private function login(): bool
279		{
280		// If legacy login scheme is enabled
281		if ($this->config('legacy')) {
282		// For the first we need get hash with salt
283		$query = new Query('/login');
284		$response = $this->write($query)->read(false);
285
286		// Now need use this hash for authorization
287		$query = (new Query('/login'))
288		->add('=name=' . $this->config('user'))
289		->add('=response=00' . md5(\chr(0) . $this->config('pass') . pack('H*', $response[1])));
290		} else {
291		// Just login with our credentials
292		$query = (new Query('/login'))
293		->add('=name=' . $this->config('user'))
294		->add('=password=' . $this->config('pass'));
295		}
296
297		// Execute query and get response
298		$response = $this->write($query)->read(false);
299
300		// Return true if we have only one line from server and this line is !done
301		return isset($response[0]) && $response[0] === '!done';
302		}
303
304		/**
305		* Connect to socket server
306		*
307		* @return bool
308		*/
309		public function connect(): bool
310		{
311		// By default we not connected
312		$connected = false;
313
314		// Few attempts in loop
315		for ($attempt = 1; $attempt <= $this->config('attempts'); $attempt++) {
316
317		// Initiate socket session
318		$this->openSocket();
319
320		// If socket is active
321		if ($this->getSocket()) {
322
323		// If we logged in then exit from loop
324		if (true === $this->login()) {
325		$connected = true;
326		break;
327		}
328
329		// Else close socket and start from begin
330		$this->closeSocket();
331		}
332
333		// Sleep some time between tries
334		sleep($this->config('delay'));
335		}
336
337		// Return status of connection
338		return $connected;
339		}
340
341		/**
342		* Save socket resource to static variable
343		*
344		* @param resource\|null $socket
345		* @return bool
346		*/
347		private function setSocket($socket): bool
348		{
349		if (\is_resource($socket)) {
350		$this->_socket = $socket;
351		return true;
352		}
353		return false;
354		}
355
356		/**
357		* Return socket resource if is exist
358		*
359		* @return bool\|resource
360		*/
361		public function getSocket()
362		{
363		return \is_resource($this->_socket)
364		? $this->_socket
365		: false;
366		}
367
368		/**
369		* Initiate socket session
370		*
371		* @return bool
372		* @throws ClientException
373		*/
374		private function openSocket(): bool
375		{
376		// Connect to server
377		$socket = false;
		0 ignored issues – show Unused Code introduced 2018-08-24 11:31 UTC by Report Bug Copy Issue Report `$socket` is not used, you could remove the assignment. This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently. $myVar = 'Value'; $higher = false; if (rand(1, 6) > 3) { $higher = true; } else { $higher = false; } Both the `$myVar` assignment in line 1 and the `$higher` assignment in line 2 are dead. The first because `$myVar` is never used and the second because `$higher` is always overwritten for every possible time line. Loading history...
378
379		// Default: Context for ssl
380		$context = stream_context_create([
381		'ssl' => [
382		'ciphers' => 'ADH:ALL',
383		'verify_peer' => false,
384		'verify_peer_name' => false
385		]
386		]);
387
388		// Default: Proto tcp:// but for ssl we need ssl://
389		$proto = $this->config('ssl') ? 'ssl://' : '';
390
391		// Initiate socket client
392		$socket = stream_socket_client(
393		$proto . $this->config('host') . ':' . $this->config('port'),
394		$this->_socket_err_num,
395		$this->_socket_err_str,
396		$this->config('timeout'),
397		STREAM_CLIENT_CONNECT,
398		$context
399		);
400
401		// Throw error is socket is not initiated
402		if (false === $socket) {
403		throw new ClientException('stream_socket_client() failed: code: ' . $this->_socket_err_num . ' reason: ' . $this->_socket_err_str);
404		}
405
406		// Save socket to static variable
407		return $this->setSocket($socket);
408		}
409
410		/**
411		* Close socket session
412		*
413		* @return bool
414		*/
415		private function closeSocket(): bool
416		{
417		return fclose($this->_socket);
418		}
419		}
420

EvilFreelancer / routeros-api-php

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