CaptchaAction::init() - Code Metrics - Inspection of "Refactor CAPTCHA extracting Driver (#14632)" - yiisoft/yii2 - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — 2.1 ( f59067...a01579 )

unknown

created 2017-08-21 11:08 UTC

CaptchaAction::init() A

↳ Parent: CaptchaAction

Complexity

Conditions	1
Paths	1

Size

Total Lines	5
Code Lines	3

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	4
CRAP Score	1

Importance

Changes

Metric	Value
dl	0
loc	5
ccs	4
cts	4
cp	1
rs	9.4285
c	0
b	0
f	0
cc	1
eloc	3
nc	1
nop	0
crap	1

<?php
/**
 * @link http://www.yiiframework.com/
 * @copyright Copyright (c) 2008 Yii Software LLC
 * @license http://www.yiiframework.com/license/
 */

namespace yii\captcha;

use Yii;
use yii\base\Action;
use yii\base\InvalidConfigException;
use yii\di\Instance;
use yii\helpers\Url;
use yii\web\Response;

/**
 * CaptchaAction renders a CAPTCHA image.
 *
 * CaptchaAction is used together with [[Captcha]] and [[\yii\captcha\CaptchaValidator]]
 * to provide the [CAPTCHA](http://en.wikipedia.org/wiki/Captcha) feature.
 *
 * You should configure [[driver]] with the actual CAPTCHA rendering driver to be used.
 * Note that different drivers may require different libraries or PHP extension installed.
 * Please refer to the particular driver class for details.
 *
 * Using CAPTCHA involves the following steps:
 *
 * 1. Override [[\yii\web\Controller::actions()]] and register an action of class CaptchaAction with ID 'captcha'
 * 2. In the form model, declare an attribute to store user-entered verification code, and declare the attribute
 *    to be validated by the 'captcha' validator.
 * 3. In the controller view, insert a [[Captcha]] widget in the form.
 *
 * @property string $verifyCode The verification code. This property is read-only.
 *
 * @author Qiang Xue <[email protected]>
 * @since 2.0
 */
class CaptchaAction extends Action
{
    /**
     * The name of the GET parameter indicating whether the CAPTCHA image should be regenerated.
     */
    const REFRESH_GET_VAR = 'refresh';

    /**
     * @var int how many times should the same CAPTCHA be displayed. Defaults to 3.
     * A value less than or equal to 0 means the test is unlimited.
     */
    public $testLimit = 3;
    /**
     * @var string the fixed verification code. When this property is set,
     * [[getVerifyCode()]] will always return the value of this property.
     * This is mainly used in automated tests where we want to be able to reproduce
     * the same verification code each time we run the tests.
     * If not set, it means the verification code will be randomly generated.
     */
    public $fixedVerifyCode;
    /**
     * @var DriverInterface|array|string the driver to be used for CAPTCHA rendering. It could be either an instance
     * of [[DriverInterface]] or its DI compatible configuration.
     * For example:
     *
     * ```php
     * [
     *     'class' => \yii\captcha\ImagickDriver::class,
     *     // 'backColor' => 0xFFFFFF,
     *     // 'foreColor' => 0x2040A0,
     * ]
     * ```
     *
     * After the action object is created, if you want to change this property, you should assign it
     * with a [[DriverInterface]] object only.
     * @since 2.1.0
     */
    public $driver;


    /**
     * Initializes the action.
     * @throws InvalidConfigException if the font file does not exist.
     */
    public function init()
    {
        parent::init();
        $this->driver = Instance::ensure($this->driver, DriverInterface::class);
    }

    /**
     * Runs the action.
     */
    public function run()
    {
        if (Yii::$app->request->getQueryParam(self::REFRESH_GET_VAR) !== null) {
            // AJAX request for regenerating code
            $code = $this->getVerifyCode(true);
            Yii::$app->response->format = Response::FORMAT_JSON;
            return [
                'hash1' => $this->generateValidationHash($code),
                'hash2' => $this->generateValidationHash(strtolower($code)),
                // we add a random 'v' parameter so that FireFox can refresh the image
                // when src attribute of image tag is changed
                'url' => Url::to([$this->id, 'v' => uniqid()]),
            ];
        }

        $this->setHttpHeaders();
        Yii::$app->response->format = Response::FORMAT_RAW;

        return $this->driver->renderImage($this->getVerifyCode());
    }

    /**
     * Generates a hash code that can be used for client-side validation.
     * @param string $code the CAPTCHA code
     * @return string a hash code generated from the CAPTCHA code
     */
    public function generateValidationHash($code)
    {
        for ($h = 0, $i = strlen($code) - 1; $i >= 0; --$i) {
            $h += ord($code[$i]);
        }

        return $h;
    }

    /**
     * Gets the verification code.
     * @param bool $regenerate whether the verification code should be regenerated.
     * @return string the verification code.
     */
    public function getVerifyCode($regenerate = false)
    {
        if ($this->fixedVerifyCode !== null) {
            return $this->fixedVerifyCode;
        }

        $session = Yii::$app->getSession();
class A
{
    public function foo() { }
}

class B extends A
{
    public function bar() { }
}

/**
 * @param A|B $x
 */
function someFunction($x)
{
    $x->foo(); // This call is fine as the method exists in A and B.
    $x->bar(); // This method only exists in B and might cause an error.
}
        $session->open();
        $name = $this->getSessionKey();
        if ($session->get($name) === null || $regenerate) {
            $session->set($name, $this->driver->generateVerifyCode());
            $session->set($name . 'count', 1);
        }

        return $session->get($name);
    }

    /**
     * Validates the input to see if it matches the generated code.
     * @param string $input user input
     * @param bool $caseSensitive whether the comparison should be case-sensitive
     * @return bool whether the input is valid
     */
    public function validate($input, $caseSensitive)
    {
        $code = $this->getVerifyCode();
        $valid = $caseSensitive ? ($input === $code) : strcasecmp($input, $code) === 0;
        $session = Yii::$app->getSession();
class A
{
    public function foo() { }
}

class B extends A
{
    public function bar() { }
}

/**
 * @param A|B $x
 */
function someFunction($x)
{
    $x->foo(); // This call is fine as the method exists in A and B.
    $x->bar(); // This method only exists in B and might cause an error.
}
        $session->open();
        $name = $this->getSessionKey() . 'count';
        $session[$name] = $session[$name] + 1;
        if ($valid || $session[$name] > $this->testLimit && $this->testLimit > 0) {
            $this->getVerifyCode(true);
        }

        return $valid;
    }

    /**
     * Returns the session variable name used to store verification code.
     * @return string the session variable name
     */
    protected function getSessionKey()
    {
        return '__captcha/' . $this->getUniqueId();
    }

    /**
     * Sets the HTTP headers needed by image response.
     */
    protected function setHttpHeaders()
    {
        Yii::$app->getResponse()->getHeaders()
            ->set('Pragma', 'public')
            ->set('Expires', '0')
            ->set('Cache-Control', 'must-revalidate, post-check=0, pre-check=0')
            ->set('Content-Transfer-Encoding', 'binary')
            ->set('Content-type', $this->driver->getImageMimeType());
    }
}


1		<?php
2		/**
3		* @link http://www.yiiframework.com/
4		* @copyright Copyright (c) 2008 Yii Software LLC
5		* @license http://www.yiiframework.com/license/
6		*/
7
8		namespace yii\captcha;
9
10		use Yii;
11		use yii\base\Action;
12		use yii\base\InvalidConfigException;
13		use yii\di\Instance;
14		use yii\helpers\Url;
15		use yii\web\Response;
16
17		/**
18		* CaptchaAction renders a CAPTCHA image.
19		*
20		* CaptchaAction is used together with [[Captcha]] and [[\yii\captcha\CaptchaValidator]]
21		* to provide the [CAPTCHA](http://en.wikipedia.org/wiki/Captcha) feature.
22		*
23		* You should configure [[driver]] with the actual CAPTCHA rendering driver to be used.
24		* Note that different drivers may require different libraries or PHP extension installed.
25		* Please refer to the particular driver class for details.
26		*
27		* Using CAPTCHA involves the following steps:
28		*
29		* 1. Override [[\yii\web\Controller::actions()]] and register an action of class CaptchaAction with ID 'captcha'
30		* 2. In the form model, declare an attribute to store user-entered verification code, and declare the attribute
31		* to be validated by the 'captcha' validator.
32		* 3. In the controller view, insert a [[Captcha]] widget in the form.
33		*
34		* @property string $verifyCode The verification code. This property is read-only.
35		*
36		* @author Qiang Xue <[email protected]>
37		* @since 2.0
38		*/
39		class CaptchaAction extends Action
40		{
41		/**
42		* The name of the GET parameter indicating whether the CAPTCHA image should be regenerated.
43		*/
44		const REFRESH_GET_VAR = 'refresh';
45
46		/**
47		* @var int how many times should the same CAPTCHA be displayed. Defaults to 3.
48		* A value less than or equal to 0 means the test is unlimited.
49		*/
50		public $testLimit = 3;
51		/**
52		* @var string the fixed verification code. When this property is set,
53		* [[getVerifyCode()]] will always return the value of this property.
54		* This is mainly used in automated tests where we want to be able to reproduce
55		* the same verification code each time we run the tests.
56		* If not set, it means the verification code will be randomly generated.
57		*/
58		public $fixedVerifyCode;
59		/**
60		* @var DriverInterface\|array\|string the driver to be used for CAPTCHA rendering. It could be either an instance
61		* of [[DriverInterface]] or its DI compatible configuration.
62		* For example:
63		*
64		* ```php
65		* [
66		* 'class' => \yii\captcha\ImagickDriver::class,
67		* // 'backColor' => 0xFFFFFF,
68		* // 'foreColor' => 0x2040A0,
69		* ]
70		* ```
71		*
72		* After the action object is created, if you want to change this property, you should assign it
73		* with a [[DriverInterface]] object only.
74		* @since 2.1.0
75		*/
76		public $driver;
77
78
79		/**
80		* Initializes the action.
81		* @throws InvalidConfigException if the font file does not exist.
82		*/
83	2	public function init()
84		{
85	2	parent::init();
86	2	$this->driver = Instance::ensure($this->driver, DriverInterface::class);
87	2	}
88
89		/**
90		* Runs the action.
91		*/
92	2	public function run()
93		{
94	2	if (Yii::$app->request->getQueryParam(self::REFRESH_GET_VAR) !== null) {
95		// AJAX request for regenerating code
96	1	$code = $this->getVerifyCode(true);
97	1	Yii::$app->response->format = Response::FORMAT_JSON;
98		return [
99	1	'hash1' => $this->generateValidationHash($code),
100	1	'hash2' => $this->generateValidationHash(strtolower($code)),
101		// we add a random 'v' parameter so that FireFox can refresh the image
102		// when src attribute of image tag is changed
103	1	'url' => Url::to([$this->id, 'v' => uniqid()]),
104		];
105		}
106
107	1	$this->setHttpHeaders();
108	1	Yii::$app->response->format = Response::FORMAT_RAW;
109
110	1	return $this->driver->renderImage($this->getVerifyCode());
111		}
112
113		/**
114		* Generates a hash code that can be used for client-side validation.
115		* @param string $code the CAPTCHA code
116		* @return string a hash code generated from the CAPTCHA code
117		*/
118	1	public function generateValidationHash($code)
119		{
120	1	for ($h = 0, $i = strlen($code) - 1; $i >= 0; --$i) {
121		$h += ord($code[$i]);
122		}
123
124	1	return $h;
125		}
126
127		/**
128		* Gets the verification code.
129		* @param bool $regenerate whether the verification code should be regenerated.
130		* @return string the verification code.
131		*/
132	2	public function getVerifyCode($regenerate = false)
133		{
134	2	if ($this->fixedVerifyCode !== null) {
135		return $this->fixedVerifyCode;
136		}
137
138	2	$session = Yii::$app->getSession();
		0 ignored issues – show Bug introduced 2017-04-02 07:21 UTC by Report Bug Copy Issue Report The method `getSession` does only exist in `yii\web\Application`, but not in `yii\console\Application`. It seems like the method you are trying to call exists only in some of the possible types. Let’s take a look at an example: class A { public function foo() { } } class B extends A { public function bar() { } } /** * @param A\|B $x / function someFunction($x) { $x->foo(); // This call is fine as the method exists in A and B. $x->bar(); // This method only exists in B and might cause an error. } Available Fixes Add an additional type-check: /* * @param A\|B $x / function someFunction($x) { $x->foo(); if ($x instanceof B) { $x->bar(); } } Only allow a single type to be passed if the variable comes from a parameter: function someFunction(B $x) { /* ... */ } Loading history...
139	2	$session->open();
140	2	$name = $this->getSessionKey();
141	2	if ($session->get($name) === null \|\| $regenerate) {
142	2	$session->set($name, $this->driver->generateVerifyCode());
143	2	$session->set($name . 'count', 1);
144		}
145
146	2	return $session->get($name);
147		}
148
149		/**
150		* Validates the input to see if it matches the generated code.
151		* @param string $input user input
152		* @param bool $caseSensitive whether the comparison should be case-sensitive
153		* @return bool whether the input is valid
154		*/
155		public function validate($input, $caseSensitive)
156		{
157		$code = $this->getVerifyCode();
158		$valid = $caseSensitive ? ($input === $code) : strcasecmp($input, $code) === 0;
159		$session = Yii::$app->getSession();
		0 ignored issues – show Bug introduced 2017-04-02 07:21 UTC by Report Bug Copy Issue Report The method `getSession` does only exist in `yii\web\Application`, but not in `yii\console\Application`. It seems like the method you are trying to call exists only in some of the possible types. Let’s take a look at an example: class A { public function foo() { } } class B extends A { public function bar() { } } /** * @param A\|B $x / function someFunction($x) { $x->foo(); // This call is fine as the method exists in A and B. $x->bar(); // This method only exists in B and might cause an error. } Available Fixes Add an additional type-check: /* * @param A\|B $x / function someFunction($x) { $x->foo(); if ($x instanceof B) { $x->bar(); } } Only allow a single type to be passed if the variable comes from a parameter: function someFunction(B $x) { /* ... */ } Loading history...
160		$session->open();
161		$name = $this->getSessionKey() . 'count';
162		$session[$name] = $session[$name] + 1;
163		if ($valid \|\| $session[$name] > $this->testLimit && $this->testLimit > 0) {
164		$this->getVerifyCode(true);
165		}
166
167		return $valid;
168		}
169
170		/**
171		* Returns the session variable name used to store verification code.
172		* @return string the session variable name
173		*/
174	2	protected function getSessionKey()
175		{
176	2	return '__captcha/' . $this->getUniqueId();
177		}
178
179		/**
180		* Sets the HTTP headers needed by image response.
181		*/
182	1	protected function setHttpHeaders()
183		{
184	1	Yii::$app->getResponse()->getHeaders()
185	1	->set('Pragma', 'public')
186	1	->set('Expires', '0')
187	1	->set('Cache-Control', 'must-revalidate, post-check=0, pre-check=0')
188	1	->set('Content-Transfer-Encoding', 'binary')
189	1	->set('Content-type', $this->driver->getImageMimeType());
190	1	}
191		}
192

yiisoft / yii2

Push — 2.1 ( f59067...a01579 )

CaptchaAction::init() A

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