Backend::checkCredentials() - Code Metrics - Inspection of "Merge pull request #336 from Jalle19/hoa-update" - Jalle19/xbmc-video-server - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Push — master ( d021a5...a13070 )

by Sam

created 2023-08-12 13:44 UTC

Backend::checkCredentials() A

↳ Parent: Backend

Complexity

Conditions	3
Paths	3

Size

Total Lines	9
Code Lines	5

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	1

Metric	Value
cc	3
eloc	5
c	1
b	0
f	1
nc	3
nop	1
dl	0
loc	9
rs	10

<?php

/**
 * This is the model class for table "backend".
 *
 * The followings are the available columns in table 'backends':
 * @property int $id
 * @property string $name
 * @property string $hostname
 * @property int $port
 * @property int $tcp_port
 * @property string $username
 * @property string $password
 * @property string $proxyLocation
 * @property int $default
 * @property string $macAddress
 * @property string $subnetMask
 * 
 * @author Sam Stenvall <[email protected]>
 * @copyright Copyright &copy; Sam Stenvall 2014-
 * @license https://www.gnu.org/licenses/gpl.html The GNU General Public License v3.0
 * 
 * @method Backend default() applies the "default" scope
 */
class Backend extends CActiveRecord
{
	
	const DEFAULT_HOSTNAME = 'localhost';
	const DEFAULT_PORT = 8080;
	const DEFAULT_TCP_PORT = 9090;
	const DEFAULT_USERNAME = 'kodi';
	const DEFAULT_PASSWORD = 'kodi';

	/**
	 * Timeout (in seconds) limit while checking if a backend is connectable
	 */
	const SOCKET_TIMEOUT = 5;

	/**
	 * Returns the static model of the specified AR class.
	 * @param string $className active record class name.
	 * @return Backend the static model class
	 */
	public static function model($className = __CLASS__)
	{
		return parent::model($className);
	}

	/**
	 * @return string the associated database table name
	 */
	public function tableName()
	{
		return 'backend';
	}

	/**
	 * @return array validation rules for model attributes.
	 */
	public function rules()
	{
		return array(
			array('name, hostname, port, tcp_port, username, password', 'required'),
			array('default', 'requireDefaultBackend'),
			array('default', 'numerical', 'integerOnly'=>true),
			array('port, tcp_port', 'numerical', 'integerOnly'=>true, 'max'=>65535),
			array('proxyLocation', 'safe'),
			// the following rules depend on each other so they must come in this order
			array('hostname', 'checkConnectivity'),
			array('hostname', 'checkServerType'),
			array('username', 'checkCredentials'),
			array('macAddress', 'validateMacAddress'),
			array('subnetMask', 'validateSubnetMask'),
		);
	}
	
	/**
	 * @return array the scopes for this model
	 */
	public function scopes()
	{
		return array(
			'default'=>array(
				'condition'=>'`default` = 1',
			)
		);
	}

	/**
	 * @return array customized attribute labels (name=>label)
	 */
	public function attributeLabels()
	{
		return array(
			'name'=>Yii::t('Backend', 'Backend name'),
			'hostname'=>Yii::t('Backend', 'Hostname'),
			'port'=>Yii::t('Backend', 'Port'),
			'tcp_port'=>Yii::t('Backend', 'TCP port'),
			'username'=>Yii::t('Backend', 'Username'),
			'password'=>Yii::t('Backend', 'Password'),
			'proxyLocation'=>Yii::t('Backend', 'Proxy location'),
			'default'=>Yii::t('Backend', 'Set as default'),
			'macAddress'=>Yii::t('Backend', 'MAC address'),
			'subnetMask'=>Yii::t('Backend', 'Subnet mask'),
		);
	}
	
	/**
	 * Checks that there is actually something listening on the specified 
	 * hostname and port.
	 * @param string $attribute the attribute being validated ("hostname" in 
	 * this case)
	 */
	public function checkConnectivity($attribute)
	{
		if (!$this->areAttributesValid(array('hostname', 'port')))
			return;

		if (!$this->isConnectable())
			$this->addError($attribute, Yii::t('Backend', 'Unable to connect to {hostname}:{port}, make sure XBMC is running and has its web server enabled', 
					array('{hostname}'=>$this->hostname, '{port}'=>$this->port)));
	}

	/**
	 * Checks that the credentials entered are valid
	 * @param string $attribute the attribute being validated ("username" in 
	 * this case)
	 */
	public function checkCredentials($attribute)
	{
		if (!$this->areAttributesValid(array('hostname', 'port', 'username', 'password')))
			return;

		$webserver = new WebServer($this->hostname, $this->port);

		if (!$webserver->checkCredentials($this->username, $this->password))
			$this->addError($attribute, Yii::t('Backend', 'Invalid credentials'));
	}
	
	/**
	 * Checks that the server running on hostname:port is actually XBMC and not 
	 * some other software. We do this by looking at the authentication realm 
	 * string.
	 * @param string $attribute the attribute being validated ("username" in 
	 * this case)
	 */
	public function checkServerType($attribute)
	{
		if (!$this->areAttributesValid(array('hostname', 'port')))
			return;

		$webserver = new WebServer($this->hostname, $this->port);

		// Check that the server requires authentication
		if (!$webserver->requiresAuthentication())
			$this->addError($attribute, Yii::t('Backend', 'The server does not ask for authentication'));
		else
		{
			// Check the authentication realm
			$realm = $webserver->getAuthenticationRealm();

			if (strtolower($realm) !== 'xbmc' && strtolower($realm) !== 'kodi')
			{
				$message = 'The server at '.$webserver->getHostInfo()." doesn't seem to be an XBMC instance";

				// Log whatever string the server identified as for debugging purposes
				Yii::log($message.' (the server identified as "'.$realm.'")', CLogger::LEVEL_ERROR, 'Backend');
				$this->addError($attribute, $message);
			}
		}
	}

	/**
	 * Checks that there is another backend set as default if the default 
	 * checkbox is unchecked for this one
	 * @param string $attribute the attribute being validated
	 */
	public function requireDefaultBackend($attribute)
	{
		if (!$this->{$attribute})
		{
			$error = Yii::t('Backend', 'There must be a default backend');
			
			// If this backend is currently the default one it must remain so
			if (!$this->isNewRecord)
			{
				$model = $this->findByPk($this->id);

				if ($model->default)
					$this->addError($attribute, $error);
			}

			// If there are no other backends then this must be the default one
			if (count(Backend::model()->findAll()) === 0)
				$this->addError($attribute, $error);
		}
	}
	
	/**
	 * Validates the MAC address attribute
	 * @param string $attribute the attribute being validated
	 */
	public function validateMacAddress($attribute)
	{
		if (!empty($this->macAddress) && !preg_match('/^([0-9A-F]{2}[:-]){5}([0-9A-F]{2})$/i', $this->macAddress))
			$this->addError($attribute, Yii::t('Backend', 'Invalid MAC address'));
	}
	
	/**
	 * Validates the subnet mask attribute
	 * @param string $attribute the attribute being validated
	 */
	public function validateSubnetMask($attribute)
	{
		if (!empty($this->subnetMask) && !filter_var($this->subnetMask, FILTER_VALIDATE_IP))
			$this->addError($attribute, Yii::t('Backend', 'Invalid subnet mask'));
	}

	/**
	 * Formats the MAC address and sets the default subnet mask before saving 
	 * the model
	 * @return boolean whether the save should happen or not
	 */
	protected function beforeSave()
	{
		$this->macAddress = strtolower(str_replace('-', ':', $this->macAddress));
		
		if (!empty($this->macAddress) && empty($this->subnetMask))
			$this->subnetMask = '255.255.255.0';

		return parent::beforeSave();
	}

	/**
	 * Makes sure that no other backend is set as default if this one is
	 */
	protected function afterSave()
	{
		if ($this->default)
		{
			Yii::app()->db->createCommand()->update($this->tableName(), 
					array('default'=>0), 'id != :id', array(':id'=>$this->id));
		}

		parent::afterSave();
	}
	
	/**
	 * Resets some attributes to their default values
	 */
	public function setDefaultValues()
	{
		$this->hostname = self::DEFAULT_HOSTNAME;
		$this->port = self::DEFAULT_PORT;
		$this->tcp_port = self::DEFAULT_TCP_PORT;
		$this->username = self::DEFAULT_USERNAME;
		$this->password = self::DEFAULT_PASSWORD;
	}

	/**
	 * @return boolean whether this backend is connectable
	 * @param int $port the port to try to connect to. Defaults to null, meaning 
	 * the HTTP port configured for this backend
	 * @param boolean $logFailure whether unsuccessful attempts should be logged. Defaults 
	 * to true.
	 */
	public function isConnectable($port = null, $logFailure = true)
	{
		$errno = 0;
		$errStr = '';
		
		if ($port === null)
			$port = $this->port;
		
		if (@fsockopen(Backend::normalizeAddress($this->hostname), $port, $errno, $errStr, 
				self::SOCKET_TIMEOUT) === false || $errno !== 0)
		{
			if ($logFailure)
				Yii::log('Failed to connect to '.$this->hostname.':'.$this->port.'. The exact error was: '.$errStr.' ('.$errno.')', CLogger::LEVEL_ERROR, 'Backend');
			
			return false;
		}

		return true;
	}
	
	/**
	 * @return boolean whether the backend can be contacted over a WebSocket
	 */
	public function hasWebSocketConnectivity()
	{
		return $this->isConnectable($this->tcp_port, false);
	}

	/**
	 * Returns a data provider for this model
	 * @return \CActiveDataProvider
	 */
	public function getDataProvider()
	{
		return new CActiveDataProvider(__CLASS__, array(
			'pagination'=>false
		));
	}
	
	/**
	 * Optionally mangles the specified address so it can be used properly, e.g. 
	 * by adding braces around IPv6 addresses.
	 * @param string $address a hostname or IP address
	 * @return string the normalized address
	 */
	public static function normalizeAddress($address)
	{
		// If the address is an IPv6 address we need to wrap it in square brackets
		if (strpos($address, ':') !== false)
			return '[' . $address . ']';
		else
			return $address;
	}
	
	/**
	 * Checks whether any of the specified attributes have errors and returns 
	 * true if they don't
	 * @param string[] $attributes the attributes to check
	 * @return boolean whether any of the attributes have errors
	 */
	private function areAttributesValid($attributes)
	{
		foreach ($attributes as $attribute)
			if ($this->hasErrors($attribute))
				return false;

		return true;
	}

}


1			<?php
2
3			/**
4			* This is the model class for table "backend".
5			*
6			* The followings are the available columns in table 'backends':
7			* @property int $id
8			* @property string $name
9			* @property string $hostname
10			* @property int $port
11			* @property int $tcp_port
12			* @property string $username
13			* @property string $password
14			* @property string $proxyLocation
15			* @property int $default
16			* @property string $macAddress
17			* @property string $subnetMask
18			*
19			* @author Sam Stenvall <[email protected]>
20			* @copyright Copyright © Sam Stenvall 2014-
21			* @license https://www.gnu.org/licenses/gpl.html The GNU General Public License v3.0
22			*
23			* @method Backend default() applies the "default" scope
24			*/
25			class Backend extends CActiveRecord
26			{
27
28			const DEFAULT_HOSTNAME = 'localhost';
29			const DEFAULT_PORT = 8080;
30			const DEFAULT_TCP_PORT = 9090;
31			const DEFAULT_USERNAME = 'kodi';
32			const DEFAULT_PASSWORD = 'kodi';
33
34			/**
35			* Timeout (in seconds) limit while checking if a backend is connectable
36			*/
37			const SOCKET_TIMEOUT = 5;
38
39			/**
40			* Returns the static model of the specified AR class.
41			* @param string $className active record class name.
42			* @return Backend the static model class
43			*/
44			public static function model($className = __CLASS__)
45			{
46			return parent::model($className);
47			}
48
49			/**
50			* @return string the associated database table name
51			*/
52			public function tableName()
53			{
54			return 'backend';
55			}
56
57			/**
58			* @return array validation rules for model attributes.
59			*/
60			public function rules()
61			{
62			return array(
63			array('name, hostname, port, tcp_port, username, password', 'required'),
64			array('default', 'requireDefaultBackend'),
65			array('default', 'numerical', 'integerOnly'=>true),
66			array('port, tcp_port', 'numerical', 'integerOnly'=>true, 'max'=>65535),
67			array('proxyLocation', 'safe'),
68			// the following rules depend on each other so they must come in this order
69			array('hostname', 'checkConnectivity'),
70			array('hostname', 'checkServerType'),
71			array('username', 'checkCredentials'),
72			array('macAddress', 'validateMacAddress'),
73			array('subnetMask', 'validateSubnetMask'),
74			);
75			}
76
77			/**
78			* @return array the scopes for this model
79			*/
80			public function scopes()
81			{
82			return array(
83			'default'=>array(
84			'condition'=>'`default` = 1',
85			)
86			);
87			}
88
89			/**
90			* @return array customized attribute labels (name=>label)
91			*/
92			public function attributeLabels()
93			{
94			return array(
95			'name'=>Yii::t('Backend', 'Backend name'),
96			'hostname'=>Yii::t('Backend', 'Hostname'),
97			'port'=>Yii::t('Backend', 'Port'),
98			'tcp_port'=>Yii::t('Backend', 'TCP port'),
99			'username'=>Yii::t('Backend', 'Username'),
100			'password'=>Yii::t('Backend', 'Password'),
101			'proxyLocation'=>Yii::t('Backend', 'Proxy location'),
102			'default'=>Yii::t('Backend', 'Set as default'),
103			'macAddress'=>Yii::t('Backend', 'MAC address'),
104			'subnetMask'=>Yii::t('Backend', 'Subnet mask'),
105			);
106			}
107
108			/**
109			* Checks that there is actually something listening on the specified
110			* hostname and port.
111			* @param string $attribute the attribute being validated ("hostname" in
112			* this case)
113			*/
114			public function checkConnectivity($attribute)
115			{
116			if (!$this->areAttributesValid(array('hostname', 'port')))
117			return;
118
119			if (!$this->isConnectable())
120			$this->addError($attribute, Yii::t('Backend', 'Unable to connect to {hostname}:{port}, make sure XBMC is running and has its web server enabled',
121			array('{hostname}'=>$this->hostname, '{port}'=>$this->port)));
122			}
123
124			/**
125			* Checks that the credentials entered are valid
126			* @param string $attribute the attribute being validated ("username" in
127			* this case)
128			*/
129			public function checkCredentials($attribute)
130			{
131			if (!$this->areAttributesValid(array('hostname', 'port', 'username', 'password')))
132			return;
133
134			$webserver = new WebServer($this->hostname, $this->port);
135
136			if (!$webserver->checkCredentials($this->username, $this->password))
137			$this->addError($attribute, Yii::t('Backend', 'Invalid credentials'));
138			}
139
140			/**
141			* Checks that the server running on hostname:port is actually XBMC and not
142			* some other software. We do this by looking at the authentication realm
143			* string.
144			* @param string $attribute the attribute being validated ("username" in
145			* this case)
146			*/
147			public function checkServerType($attribute)
148			{
149			if (!$this->areAttributesValid(array('hostname', 'port')))
150			return;
151
152			$webserver = new WebServer($this->hostname, $this->port);
153
154			// Check that the server requires authentication
155			if (!$webserver->requiresAuthentication())
156			$this->addError($attribute, Yii::t('Backend', 'The server does not ask for authentication'));
157			else
158			{
159			// Check the authentication realm
160			$realm = $webserver->getAuthenticationRealm();
161
162			if (strtolower($realm) !== 'xbmc' && strtolower($realm) !== 'kodi')
163			{
164			$message = 'The server at '.$webserver->getHostInfo()." doesn't seem to be an XBMC instance";
165
166			// Log whatever string the server identified as for debugging purposes
167			Yii::log($message.' (the server identified as "'.$realm.'")', CLogger::LEVEL_ERROR, 'Backend');
168			$this->addError($attribute, $message);
169			}
170			}
171			}
172
173			/**
174			* Checks that there is another backend set as default if the default
175			* checkbox is unchecked for this one
176			* @param string $attribute the attribute being validated
177			*/
178			public function requireDefaultBackend($attribute)
179			{
180			if (!$this->{$attribute})
181			{
182			$error = Yii::t('Backend', 'There must be a default backend');
183
184			// If this backend is currently the default one it must remain so
185			if (!$this->isNewRecord)
186			{
187			$model = $this->findByPk($this->id);
188
189			if ($model->default)
190			$this->addError($attribute, $error);
191			}
192
193			// If there are no other backends then this must be the default one
194			if (count(Backend::model()->findAll()) === 0)
195			$this->addError($attribute, $error);
196			}
197			}
198
199			/**
200			* Validates the MAC address attribute
201			* @param string $attribute the attribute being validated
202			*/
203			public function validateMacAddress($attribute)
204			{
205			if (!empty($this->macAddress) && !preg_match('/^([0-9A-F]{2}[:-]){5}([0-9A-F]{2})$/i', $this->macAddress))
206			$this->addError($attribute, Yii::t('Backend', 'Invalid MAC address'));
207			}
208
209			/**
210			* Validates the subnet mask attribute
211			* @param string $attribute the attribute being validated
212			*/
213			public function validateSubnetMask($attribute)
214			{
215			if (!empty($this->subnetMask) && !filter_var($this->subnetMask, FILTER_VALIDATE_IP))
216			$this->addError($attribute, Yii::t('Backend', 'Invalid subnet mask'));
217			}
218
219			/**
220			* Formats the MAC address and sets the default subnet mask before saving
221			* the model
222			* @return boolean whether the save should happen or not
223			*/
224			protected function beforeSave()
225			{
226			$this->macAddress = strtolower(str_replace('-', ':', $this->macAddress));
227
228			if (!empty($this->macAddress) && empty($this->subnetMask))
229			$this->subnetMask = '255.255.255.0';
230
231			return parent::beforeSave();
232			}
233
234			/**
235			* Makes sure that no other backend is set as default if this one is
236			*/
237			protected function afterSave()
238			{
239			if ($this->default)
240			{
241			Yii::app()->db->createCommand()->update($this->tableName(),
242			array('default'=>0), 'id != :id', array(':id'=>$this->id));
243			}
244
245			parent::afterSave();
246			}
247
248			/**
249			* Resets some attributes to their default values
250			*/
251			public function setDefaultValues()
252			{
253			$this->hostname = self::DEFAULT_HOSTNAME;
254			$this->port = self::DEFAULT_PORT;
255			$this->tcp_port = self::DEFAULT_TCP_PORT;
256			$this->username = self::DEFAULT_USERNAME;
257			$this->password = self::DEFAULT_PASSWORD;
258			}
259
260			/**
261			* @return boolean whether this backend is connectable
262			* @param int $port the port to try to connect to. Defaults to null, meaning
263			* the HTTP port configured for this backend
264			* @param boolean $logFailure whether unsuccessful attempts should be logged. Defaults
265			* to true.
266			*/
267			public function isConnectable($port = null, $logFailure = true)
268			{
269			$errno = 0;
270			$errStr = '';
271
272			if ($port === null)
273			$port = $this->port;
274
275			if (@fsockopen(Backend::normalizeAddress($this->hostname), $port, $errno, $errStr,
276			self::SOCKET_TIMEOUT) === false \|\| $errno !== 0)
277			{
278			if ($logFailure)
279			Yii::log('Failed to connect to '.$this->hostname.':'.$this->port.'. The exact error was: '.$errStr.' ('.$errno.')', CLogger::LEVEL_ERROR, 'Backend');
280
281			return false;
282			}
283
284			return true;
285			}
286
287			/**
288			* @return boolean whether the backend can be contacted over a WebSocket
289			*/
290			public function hasWebSocketConnectivity()
291			{
292			return $this->isConnectable($this->tcp_port, false);
293			}
294
295			/**
296			* Returns a data provider for this model
297			* @return \CActiveDataProvider
298			*/
299			public function getDataProvider()
300			{
301			return new CActiveDataProvider(__CLASS__, array(
302			'pagination'=>false
303			));
304			}
305
306			/**
307			* Optionally mangles the specified address so it can be used properly, e.g.
308			* by adding braces around IPv6 addresses.
309			* @param string $address a hostname or IP address
310			* @return string the normalized address
311			*/
312			public static function normalizeAddress($address)
313			{
314			// If the address is an IPv6 address we need to wrap it in square brackets
315			if (strpos($address, ':') !== false)
316			return '[' . $address . ']';
317			else
318			return $address;
319			}
320
321			/**
322			* Checks whether any of the specified attributes have errors and returns
323			* true if they don't
324			* @param string[] $attributes the attributes to check
325			* @return boolean whether any of the attributes have errors
326			*/
327			private function areAttributesValid($attributes)
328			{
329			foreach ($attributes as $attribute)
330			if ($this->hasErrors($attribute))
331			return false;
332
333			return true;
334			}
335
336			}
337

Jalle19 / xbmc-video-server

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Backend::checkCredentials() A

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