Security::getSessionKey() - Code Metrics - Inspection of "Test cases for Singleton pattern and fixed the err..." - psfs/core - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( c350e4...2fe906 )

by Fran

created 2016-08-21 21:04 UTC

Security::getSessionKey() A

↳ Parent: Security

Complexity

Conditions	2
Paths	2

Size

Total Lines	9
Code Lines	5

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	6
CRAP Score	2

Importance

Changes	3
Bugs	0	Features	0

Metric	Value
cc	2
eloc	5
c	3
b	0
f	0
nc	2
nop	1
dl	0
loc	9
ccs	6
cts	6
cp	1
crap	2
rs	9.6666

<?php

namespace PSFS\base;

use PSFS\base\types\SingletonTrait;


/**
 * Class Security
 * @package PSFS
 */
class Security
{
    // sha1('user')
    const USER_ID_TOKEN = '12dea96fec20593566ab75692c9949596833adc9';
    // sha1('admin')
    const MANAGER_ID_TOKEN = 'd033e22ae348aeb5660fc2140aec35850c4da997';
    // sha1('superadmin')
    const ADMIN_ID_TOKEN = '889a3a791b3875cfae413574b53da4bb8a90d53e';
    // sha1('FLASHES')
    const FLASH_MESSAGE_TOKEN = '4680c68435db1bfbf17c3fcc4f7b39d2c6122504';

    use SingletonTrait;
    /**
     * @var array $user
     */
    private $user;

    /**
     * @var array $admin
     */
    private $admin;

    private $authorized = FALSE;

    protected $session;

    /**
     * Constructor por defecto
     */
    public function __construct()
    {
        if (PHP_SESSION_NONE === session_status()) {
            session_start();
        }
        $this->session = (is_null($_SESSION)) ? array() : $_SESSION;
        if (NULL === $this->getSessionKey('__FLASH_CLEAR__')) {
            $this->clearFlashes();
            $this->setSessionKey('__FLASH_CLEAR__', microtime(TRUE));
        }
        $this->user = (array_key_exists(self::USER_ID_TOKEN, $this->session)) ? unserialize($this->session[self::USER_ID_TOKEN]) : NULL;

        $this->admin = (array_key_exists(self::ADMIN_ID_TOKEN, $this->session)) ? unserialize($this->session[self::ADMIN_ID_TOKEN]) : NULL;

    }

    /**
     * Método estático que devuelve los perfiles de la plataforma
     * @return array
     */
    public static function getProfiles()
    {
        return array(
            self::ADMIN_ID_TOKEN => _('Administrador'),
            self::MANAGER_ID_TOKEN => _('Gestor'),
            self::USER_ID_TOKEN => _('Usuario'),
        );
    }

    /**
     * Method that returns all the available profiles
     */
    public function getAdminProfiles()
    {
        static::getProfiles();
    }

    /**
     * Método estático que devuelve los perfiles disponibles
     * @return array

     */
    public static function getCleanProfiles()
    {
        return array(
            '__SUPER_ADMIN__' => self::ADMIN_ID_TOKEN,
            '__ADMIN__' => self::MANAGER_ID_TOKEN,
            '__USER__' => self::USER_ID_TOKEN,
        );
    }

    /**
     * Método estático que devuelve los perfiles disponibles
     * @return array

     */
    public function getAdminCleanProfiles()
    {
        return static::getCleanProfiles();
    }

    /**
     * Método que guarda los administradores
     *
     * @param array $user
     *
     * @return bool
     */
    public static function save($user)
    {
        $admins = array();
        if (file_exists(CONFIG_DIR . DIRECTORY_SEPARATOR . 'admins.json')) {
            $admins = json_decode(file_get_contents(CONFIG_DIR . DIRECTORY_SEPARATOR . 'admins.json'), TRUE);
        }
        $admins[$user['username']]['hash'] = sha1($user['username'] . $user['password']);
        $admins[$user['username']]['profile'] = $user['profile'];

        return (FALSE !== file_put_contents(CONFIG_DIR . DIRECTORY_SEPARATOR . 'admins.json', json_encode($admins, JSON_PRETTY_PRINT)));

    }

    /**
     * Method to save a new admin user
     * @param array $user
     * @return bool
     */
    public function saveUser($user)
    {
        $saved = false;
        if (!empty($user)) {
            $saved = static::save($user);
        }
        return $saved;
    }

    /**
     * Servicio que actualiza los datos del usuario
     *
     * @param $user
     */
    public function updateUser($user)
    {
        $this->user = $user;
    }

    /**
     * Método que devuelve los administradores de una plataforma
     * @return array|mixed
     */
    public function getAdmins()
    {
        $admins = array();
        if (file_exists(CONFIG_DIR . DIRECTORY_SEPARATOR . 'admins.json')) {
            $admins = json_decode(file_get_contents(CONFIG_DIR . DIRECTORY_SEPARATOR . 'admins.json'), TRUE);
        }

        return $admins;
    }

    /**
     * Método que devuelve si un usuario tiene privilegios para acceder a la zona de administración
     *
     * @param null $user
     * @param null $pass
     *
     * @return bool
     * @throws \HttpException
     */
    public function checkAdmin($user = NULL, $pass = NULL)
    {
        Logger::log('Checking admin session');
        if (!$this->authorized) {
            $request = Request::getInstance();
            if (!file_exists(CONFIG_DIR . DIRECTORY_SEPARATOR . 'admins.json')) {
                //Si no hay fichero de usuarios redirigimos directamente al gestor
                return Router::getInstance()->getAdmin()->adminers();
            }
            $admins = $this->getAdmins();
            //Sacamos las credenciales de la petición
            $user = $user ?: $request->getServer('PHP_AUTH_USER');
            $pass = $pass ?: $request->getServer('PHP_AUTH_PW');
            if (NULL === $user || (array_key_exists($user, $admins) && empty($admins[$user]))) {
                list($user, $pass) = $this->getAdminFromCookie();
            }
            if (!empty($user) && !empty($admins[$user])) {
                $auth = $admins[$user]['hash'];
                $this->authorized = ($auth == sha1($user . $pass));
                $this->admin = array(
                    'alias' => $user,
                    'profile' => $admins[$user]['profile'],
                );
            }
        }

        return $this->authorized;
    }

    /**
     * Método que obtiene el usuario y contraseña de la cookie de sesión de administración
     * @return array
     */
    protected function getAdminFromCookie()
    {
        $auth_cookie = Request::getInstance()->getCookie($this->getHash());
        $user = $pass = array();
        if (!empty($auth_cookie)) {
            list($user, $pass) = explode(':', base64_decode($auth_cookie));
        }

        return array($user, $pass);
    }

    /**
     * Método privado para la generación del hash de la cookie de administración
     * @return string
     */
    public function getHash()
    {
        return substr(md5('admin'), 0, 8);
    }

    /**
     * Método que devuelve el usuario logado
     * @return array
     */
    public function getUser()
    {
        return $this->user;
    }

    /**
     * Método que devuelve el usuario administrador logado
     * @return array
     */
    public function getAdmin()
    {
        return $this->admin;
    }

    /**
     * Método que calcula si se está logado o para acceder a administración
     * @return bool
     */
    public function canAccessRestrictedAdmin()
    {
        return $this->admin || preg_match('/^\/admin\/login/i', Request::requestUri());
    }

    /**
     * Servicio que devuelve una pantalla de error porque se necesita estar authenticado
     *
     * @param string|null $route
     *
     * @return string|null
     */
    public function notAuthorized($route)
    {
        return Template::getInstance()->render('notauthorized.html.twig', array(
            'route' => $route,
        ));
    }

    /**
     * Servicio que chequea si un usuario es super administrador o no
     * @return bool
     */
    public function isSuperAdmin()
    {
        $users = $this->getAdmins();
        $logged = $this->getAdminFromCookie();
        $profiles = Security::getCleanProfiles();
        if ($users[$logged[0]]) {
            $security = $users[$logged[0]]['profile'];

            return $profiles['__SUPER_ADMIN__'] === $security;
        }

        return FALSE;
    }

    /**
     * Servicio que devuelve un dato de sesión
     *
     * @param string $key
     *
     * @return mixed
     */
    public function getSessionKey($key)
    {
        $data = NULL;
        if (array_key_exists($key, $this->session)) {
            $data = $this->session[$key];
        }

        return $data;
    }

    /**
     * Servicio que setea una variable de sesión
     *
     * @param string $key
     * @param mixed $data
     *
     * @return Security
     */
    public function setSessionKey($key, $data = NULL)
    {
        $this->session[$key] = $data;

        return $this;
    }

    /**
     * Servicio que devuelve los mensajes flash de sesiones
     * @return mixed
     */
    public function getFlashes()
    {
        $flashes = $this->getSessionKey(self::FLASH_MESSAGE_TOKEN);

        return (NULL !== $flashes) ? $flashes : array();
    }

    /**
     * Servicio que limpia los mensajes flash
     * @return $this
     */
    public function clearFlashes()
    {
        $this->setSessionKey(self::FLASH_MESSAGE_TOKEN, NULL);

        return $this;
    }

    /**
     * Servicio que inserta un flash en sesión
     *
     * @param string $key
     * @param mixed $data
     */
    public function setFlash($key, $data = NULL)
    {
        $flashes = $this->getFlashes();
        if (!is_array($flashes)) {
            $flashes = array();
        }
        $flashes[$key] = $data;
        $this->setSessionKey(self::FLASH_MESSAGE_TOKEN, $flashes);
    }

    /**
     * Servicio que devuelve un flash de sesión
     *
     * @param string $key
     *
     * @return mixed
     */
    public function getFlash($key)
    {
        $flashes = $this->getFlashes();

        return (NULL !== $key && array_key_exists($key, $flashes)) ? $flashes[$key] : NULL;
    }

    /**
     * Servicio que actualiza
     *
     * @param boolean $closeSession
     *
     * @return Security
     */
    public function updateSession($closeSession = FALSE)
    {
        Logger::log('Update session');
        $_SESSION = $this->session;
        $_SESSION[self::USER_ID_TOKEN] = serialize($this->user);
        $_SESSION[self::ADMIN_ID_TOKEN] = serialize($this->admin);
        if ($closeSession) {
            Logger::log('Close session');
            session_write_close();
        }
        Logger::log('Session updated');
        return $this;
    }

    /**
     * Servicio que limpia la sesión
     */
    public function closeSession()
    {
        session_destroy();
        session_regenerate_id(TRUE);
    }

    /**
     * Extract parts from token
     * @param string $token
     *
     * @return array

     */
    private static function extractTokenParts($token)
    {
        $axis = 0;
        $parts = array();
        try {
            $partLength = floor(strlen($token) / 10);
            for ($i = 0, $ct = ceil(strlen($token) / $partLength); $i < $ct; $i++) {
                $parts[] = substr($token, $axis, $partLength);
                $axis += $partLength;
            }
        } catch (\Exception $e) {
            $partLength = 0;
        }

        return array($partLength, $parts);
    }

    /**
     * Extract Ts and Module from token
     * @param array $parts
     * @param int $partLength
     *
     * @return array

     */
    private static function extractTsAndMod(array &$parts, $partLength)
    {
        $ts = '';

        $mod = '';
        foreach ($parts as &$part) {
            if (strlen($part) == $partLength) {
                $ts .= substr($part, 0, 1);
                $mod .= substr($part, $partLength - 2, 2);
                $part = substr($part, 1, $partLength - 3);
            }
        }
        return array($ts, $mod);
    }

    /**
     * Decode token to check authorized request
     * @param string $token
     * @param string $module
     *
     * @return null|string
     */
    private static function decodeToken($token, $module = 'PSFS')
    {
        $decoded = NULL;
        list($partLength, $parts) = self::extractTokenParts($token);
        list($ts, $mod) = self::extractTsAndMod($parts, $partLength);

        $hashMod = substr(strtoupper(sha1($module)), strlen($ts) / 2, strlen($ts) * 2);
        if (time() - (integer)$ts < 300 && $hashMod === $mod) {
            $decoded = implode('', $parts);
        }
        return $decoded;
    }

    /**
     * Generate a authorized token
     * @param string $secret
     * @param string $module
     *
     * @return string
     */
    public static function generateToken($secret, $module = 'PSFS')
    {
        $ts = time();

        $hashModule = substr(strtoupper(sha1($module)), strlen($ts) / 2, strlen($ts) * 2);
        $hash = hash('sha256', $secret);
        $insert = floor(strlen($hash) / strlen($ts));
        $j = 0;

        $token = '';
        for ($i = 0, $ct = strlen($ts); $i < $ct; $i++) {
            $token .= substr($ts, $i, 1) . substr($hash, $j, $insert) . substr($hashModule, $i, 2);
            $j += $insert;
        }
        $token .= substr($hash, ($insert * strlen($ts)), strlen($hash) - ($insert * strlen($ts)));
        return $token;
    }

    /**
     * Checks if auth token is correct
     * @param string $token
     * @param string $secret
     * @param string $module
     *
     * @return bool
     */
    public static function checkToken($token, $secret, $module = 'PSFS')
    {
        if (0 === strlen($token) || 0 === strlen($secret)) {
            return false;
        }
        $module = strtolower($module);
        $decodedToken = self::decodeToken($token, $module);
        $expectedToken = self::decodeToken(self::generateToken($secret, $module), $module);

        return $decodedToken === $expectedToken;
    }

}


1			<?php
2
3			namespace PSFS\base;
4
5			use PSFS\base\types\SingletonTrait;
6
7
8			/**
9			* Class Security
10			* @package PSFS
11			*/
12			class Security
13			{
14			// sha1('user')
15			const USER_ID_TOKEN = '12dea96fec20593566ab75692c9949596833adc9';
16			// sha1('admin')
17			const MANAGER_ID_TOKEN = 'd033e22ae348aeb5660fc2140aec35850c4da997';
18			// sha1('superadmin')
19			const ADMIN_ID_TOKEN = '889a3a791b3875cfae413574b53da4bb8a90d53e';
20			// sha1('FLASHES')
21			const FLASH_MESSAGE_TOKEN = '4680c68435db1bfbf17c3fcc4f7b39d2c6122504';
22
23			use SingletonTrait;
24			/**
25			* @var array $user
26			*/
27			private $user;
28
29			/**
30			* @var array $admin
31			*/
32			private $admin;
33
34			private $authorized = FALSE;
35
36			protected $session;
37
38			/**
39			* Constructor por defecto
40			*/
41	2		public function __construct()
42			{
43	2		if (PHP_SESSION_NONE === session_status()) {
44	1		session_start();
45			}
46	2		$this->session = (is_null($_SESSION)) ? array() : $_SESSION;
47	2		if (NULL === $this->getSessionKey('__FLASH_CLEAR__')) {
48	2		$this->clearFlashes();
49	2		$this->setSessionKey('__FLASH_CLEAR__', microtime(TRUE));
50	2		}
51	2		$this->user = (array_key_exists(self::USER_ID_TOKEN, $this->session)) ? unserialize($this->session[self::USER_ID_TOKEN]) : NULL;
			0 ignored issues – show Coding Style introduced 2016-08-18 23:39 UTC by Report Bug Copy Issue Report This line exceeds maximum limit of 120 characters; contains 136 characters Overly long lines are hard to read on any screen. Most code styles therefor impose a maximum limit on the number of characters in a line. Loading history...
52	2		$this->admin = (array_key_exists(self::ADMIN_ID_TOKEN, $this->session)) ? unserialize($this->session[self::ADMIN_ID_TOKEN]) : NULL;
			0 ignored issues – show Coding Style introduced 2016-08-18 23:39 UTC by Report Bug Copy Issue Report This line exceeds maximum limit of 120 characters; contains 139 characters Overly long lines are hard to read on any screen. Most code styles therefor impose a maximum limit on the number of characters in a line. Loading history...
53	2		}
54
55			/**
56			* Método estático que devuelve los perfiles de la plataforma
57			* @return array
58			*/
59			public static function getProfiles()
60			{
61			return array(
62			self::ADMIN_ID_TOKEN => _('Administrador'),
63			self::MANAGER_ID_TOKEN => _('Gestor'),
64			self::USER_ID_TOKEN => _('Usuario'),
65			);
66			}
67
68			/**
69			* Method that returns all the available profiles
70			*/
71			public function getAdminProfiles()
72			{
73			static::getProfiles();
74			}
75
76			/**
77			* Método estático que devuelve los perfiles disponibles
78			* @return array
			0 ignored issues – show Documentation introduced 2016-05-07 10:58 UTC by Report Bug Copy Issue Report Consider making the return type a bit more specific; maybe use `array<string,string>`. This check looks for the generic type `array` as a return type and suggests a more specific type. This type is inferred from the actual code. Loading history...
79			*/
80			public static function getCleanProfiles()
81			{
82			return array(
83			'__SUPER_ADMIN__' => self::ADMIN_ID_TOKEN,
84			'__ADMIN__' => self::MANAGER_ID_TOKEN,
85			'__USER__' => self::USER_ID_TOKEN,
86			);
87			}
88
89			/**
90			* Método estático que devuelve los perfiles disponibles
91			* @return array
			0 ignored issues – show Documentation introduced 2016-08-18 21:22 UTC by Report Bug Copy Issue Report Consider making the return type a bit more specific; maybe use `array<string,string>`. This check looks for the generic type `array` as a return type and suggests a more specific type. This type is inferred from the actual code. Loading history...
92			*/
93			public function getAdminCleanProfiles()
94			{
95			return static::getCleanProfiles();
96			}
97
98			/**
99			* Método que guarda los administradores
100			*
101			* @param array $user
102			*
103			* @return bool
104			*/
105			public static function save($user)
106			{
107			$admins = array();
108		View Code Duplication	if (file_exists(CONFIG_DIR . DIRECTORY_SEPARATOR . 'admins.json')) {
109			$admins = json_decode(file_get_contents(CONFIG_DIR . DIRECTORY_SEPARATOR . 'admins.json'), TRUE);
110			}
111			$admins[$user['username']]['hash'] = sha1($user['username'] . $user['password']);
112			$admins[$user['username']]['profile'] = $user['profile'];
113
114			return (FALSE !== file_put_contents(CONFIG_DIR . DIRECTORY_SEPARATOR . 'admins.json', json_encode($admins, JSON_PRETTY_PRINT)));
			0 ignored issues – show Coding Style introduced 2016-05-07 10:58 UTC by Report Bug Copy Issue Report This line exceeds maximum limit of 120 characters; contains 136 characters Overly long lines are hard to read on any screen. Most code styles therefor impose a maximum limit on the number of characters in a line. Loading history...
115			}
116
117			/**
118			* Method to save a new admin user
119			* @param array $user
120			* @return bool
121			*/
122			public function saveUser($user)
123			{
124			$saved = false;
125			if (!empty($user)) {
126			$saved = static::save($user);
127			}
128			return $saved;
129			}
130
131			/**
132			* Servicio que actualiza los datos del usuario
133			*
134			* @param $user
135			*/
136			public function updateUser($user)
137			{
138			$this->user = $user;
139			}
140
141			/**
142			* Método que devuelve los administradores de una plataforma
143			* @return array\|mixed
144			*/
145			public function getAdmins()
146			{
147			$admins = array();
148		View Code Duplication	if (file_exists(CONFIG_DIR . DIRECTORY_SEPARATOR . 'admins.json')) {
149			$admins = json_decode(file_get_contents(CONFIG_DIR . DIRECTORY_SEPARATOR . 'admins.json'), TRUE);
150			}
151
152			return $admins;
153			}
154
155			/**
156			* Método que devuelve si un usuario tiene privilegios para acceder a la zona de administración
157			*
158			* @param null $user
159			* @param null $pass
160			*
161			* @return bool
162			* @throws \HttpException
163			*/
164			public function checkAdmin($user = NULL, $pass = NULL)
165			{
166			Logger::log('Checking admin session');
167			if (!$this->authorized) {
168			$request = Request::getInstance();
169			if (!file_exists(CONFIG_DIR . DIRECTORY_SEPARATOR . 'admins.json')) {
170			//Si no hay fichero de usuarios redirigimos directamente al gestor
171			return Router::getInstance()->getAdmin()->adminers();
172			}
173			$admins = $this->getAdmins();
174			//Sacamos las credenciales de la petición
175			$user = $user ?: $request->getServer('PHP_AUTH_USER');
176			$pass = $pass ?: $request->getServer('PHP_AUTH_PW');
177			if (NULL === $user \|\| (array_key_exists($user, $admins) && empty($admins[$user]))) {
178			list($user, $pass) = $this->getAdminFromCookie();
179			}
180			if (!empty($user) && !empty($admins[$user])) {
181			$auth = $admins[$user]['hash'];
182			$this->authorized = ($auth == sha1($user . $pass));
183			$this->admin = array(
184			'alias' => $user,
185			'profile' => $admins[$user]['profile'],
186			);
187			}
188			}
189
190			return $this->authorized;
191			}
192
193			/**
194			* Método que obtiene el usuario y contraseña de la cookie de sesión de administración
195			* @return array
196			*/
197			protected function getAdminFromCookie()
198			{
199			$auth_cookie = Request::getInstance()->getCookie($this->getHash());
200			$user = $pass = array();
201			if (!empty($auth_cookie)) {
202			list($user, $pass) = explode(':', base64_decode($auth_cookie));
203			}
204
205			return array($user, $pass);
206			}
207
208			/**
209			* Método privado para la generación del hash de la cookie de administración
210			* @return string
211			*/
212			public function getHash()
213			{
214			return substr(md5('admin'), 0, 8);
215			}
216
217			/**
218			* Método que devuelve el usuario logado
219			* @return array
220			*/
221			public function getUser()
222			{
223			return $this->user;
224			}
225
226			/**
227			* Método que devuelve el usuario administrador logado
228			* @return array
229			*/
230			public function getAdmin()
231			{
232			return $this->admin;
233			}
234
235			/**
236			* Método que calcula si se está logado o para acceder a administración
237			* @return bool
238			*/
239			public function canAccessRestrictedAdmin()
240			{
241			return $this->admin \|\| preg_match('/^\/admin\/login/i', Request::requestUri());
242			}
243
244			/**
245			* Servicio que devuelve una pantalla de error porque se necesita estar authenticado
246			*
247			* @param string\|null $route
248			*
249			* @return string\|null
250			*/
251			public function notAuthorized($route)
252			{
253			return Template::getInstance()->render('notauthorized.html.twig', array(
254			'route' => $route,
255			));
256			}
257
258			/**
259			* Servicio que chequea si un usuario es super administrador o no
260			* @return bool
261			*/
262			public function isSuperAdmin()
263			{
264			$users = $this->getAdmins();
265			$logged = $this->getAdminFromCookie();
266			$profiles = Security::getCleanProfiles();
267			if ($users[$logged[0]]) {
268			$security = $users[$logged[0]]['profile'];
269
270			return $profiles['__SUPER_ADMIN__'] === $security;
271			}
272
273			return FALSE;
274			}
275
276			/**
277			* Servicio que devuelve un dato de sesión
278			*
279			* @param string $key
280			*
281			* @return mixed
282			*/
283	2		public function getSessionKey($key)
284			{
285	2		$data = NULL;
286	2		if (array_key_exists($key, $this->session)) {
287	1		$data = $this->session[$key];
288	1		}
289
290	2		return $data;
291			}
292
293			/**
294			* Servicio que setea una variable de sesión
295			*
296			* @param string $key
297			* @param mixed $data
298			*
299			* @return Security
300			*/
301	2		public function setSessionKey($key, $data = NULL)
302			{
303	2		$this->session[$key] = $data;
304
305	2		return $this;
306			}
307
308			/**
309			* Servicio que devuelve los mensajes flash de sesiones
310			* @return mixed
311			*/
312			public function getFlashes()
313			{
314			$flashes = $this->getSessionKey(self::FLASH_MESSAGE_TOKEN);
315
316			return (NULL !== $flashes) ? $flashes : array();
317			}
318
319			/**
320			* Servicio que limpia los mensajes flash
321			* @return $this
322			*/
323	1		public function clearFlashes()
324			{
325	1		$this->setSessionKey(self::FLASH_MESSAGE_TOKEN, NULL);
326
327	1		return $this;
328			}
329
330			/**
331			* Servicio que inserta un flash en sesión
332			*
333			* @param string $key
334			* @param mixed $data
335			*/
336			public function setFlash($key, $data = NULL)
337			{
338			$flashes = $this->getFlashes();
339			if (!is_array($flashes)) {
340			$flashes = array();
341			}
342			$flashes[$key] = $data;
343			$this->setSessionKey(self::FLASH_MESSAGE_TOKEN, $flashes);
344			}
345
346			/**
347			* Servicio que devuelve un flash de sesión
348			*
349			* @param string $key
350			*
351			* @return mixed
352			*/
353			public function getFlash($key)
354			{
355			$flashes = $this->getFlashes();
356
357			return (NULL !== $key && array_key_exists($key, $flashes)) ? $flashes[$key] : NULL;
358			}
359
360			/**
361			* Servicio que actualiza
362			*
363			* @param boolean $closeSession
364			*
365			* @return Security
366			*/
367			public function updateSession($closeSession = FALSE)
368			{
369			Logger::log('Update session');
370			$_SESSION = $this->session;
371			$_SESSION[self::USER_ID_TOKEN] = serialize($this->user);
372			$_SESSION[self::ADMIN_ID_TOKEN] = serialize($this->admin);
373			if ($closeSession) {
374			Logger::log('Close session');
375			session_write_close();
376			}
377			Logger::log('Session updated');
378			return $this;
379			}
380
381			/**
382			* Servicio que limpia la sesión
383			*/
384			public function closeSession()
385			{
386			session_destroy();
387			session_regenerate_id(TRUE);
388			}
389
390			/**
391			* Extract parts from token
392			* @param string $token
393			*
394			* @return array
			0 ignored issues – show Documentation introduced 2016-05-07 10:58 UTC by Report Bug Copy Issue Report Consider making the return type a bit more specific; maybe use `array<double\|integer\|array>`. This check looks for the generic type `array` as a return type and suggests a more specific type. This type is inferred from the actual code. Loading history...
395			*/
396			private static function extractTokenParts($token)
397			{
398			$axis = 0;
399			$parts = array();
400			try {
401			$partLength = floor(strlen($token) / 10);
402			for ($i = 0, $ct = ceil(strlen($token) / $partLength); $i < $ct; $i++) {
403			$parts[] = substr($token, $axis, $partLength);
404			$axis += $partLength;
405			}
406			} catch (\Exception $e) {
407			$partLength = 0;
408			}
409
410			return array($partLength, $parts);
411			}
412
413			/**
414			* Extract Ts and Module from token
415			* @param array $parts
416			* @param int $partLength
417			*
418			* @return array
			0 ignored issues – show Documentation introduced 2016-05-07 10:58 UTC by Report Bug Copy Issue Report Consider making the return type a bit more specific; maybe use `string[]`. This check looks for the generic type `array` as a return type and suggests a more specific type. This type is inferred from the actual code. Loading history...
419			*/
420			private static function extractTsAndMod(array &$parts, $partLength)
421			{
422			$ts = '';
			0 ignored issues – show Comprehensibility introduced 2016-05-07 10:58 UTC by Report Bug Copy Issue Report Avoid variables with short names like $ts. Configured minimum length is 3. Short variable names may make your code harder to understand. Variable names should be self-descriptive. This check looks for variable names who are shorter than a configured minimum. Loading history...
423			$mod = '';
424			foreach ($parts as &$part) {
425			if (strlen($part) == $partLength) {
426			$ts .= substr($part, 0, 1);
427			$mod .= substr($part, $partLength - 2, 2);
428			$part = substr($part, 1, $partLength - 3);
429			}
430			}
431			return array($ts, $mod);
432			}
433
434			/**
435			* Decode token to check authorized request
436			* @param string $token
437			* @param string $module
438			*
439			* @return null\|string
440			*/
441			private static function decodeToken($token, $module = 'PSFS')
442			{
443			$decoded = NULL;
444			list($partLength, $parts) = self::extractTokenParts($token);
445			list($ts, $mod) = self::extractTsAndMod($parts, $partLength);
			0 ignored issues – show Comprehensibility introduced 2016-05-07 10:58 UTC by Report Bug Copy Issue Report Avoid variables with short names like $ts. Configured minimum length is 3. Short variable names may make your code harder to understand. Variable names should be self-descriptive. This check looks for variable names who are shorter than a configured minimum. Loading history...
446			$hashMod = substr(strtoupper(sha1($module)), strlen($ts) / 2, strlen($ts) * 2);
447			if (time() - (integer)$ts < 300 && $hashMod === $mod) {
448			$decoded = implode('', $parts);
449			}
450			return $decoded;
451			}
452
453			/**
454			* Generate a authorized token
455			* @param string $secret
456			* @param string $module
457			*
458			* @return string
459			*/
460			public static function generateToken($secret, $module = 'PSFS')
461			{
462			$ts = time();
			0 ignored issues – show Comprehensibility introduced 2016-05-07 10:58 UTC by Report Bug Copy Issue Report Avoid variables with short names like $ts. Configured minimum length is 3. Short variable names may make your code harder to understand. Variable names should be self-descriptive. This check looks for variable names who are shorter than a configured minimum. Loading history...
463			$hashModule = substr(strtoupper(sha1($module)), strlen($ts) / 2, strlen($ts) * 2);
464			$hash = hash('sha256', $secret);
465			$insert = floor(strlen($hash) / strlen($ts));
466			$j = 0;
			0 ignored issues – show Comprehensibility introduced 2016-05-07 10:58 UTC by Report Bug Copy Issue Report Avoid variables with short names like $j. Configured minimum length is 3. Short variable names may make your code harder to understand. Variable names should be self-descriptive. This check looks for variable names who are shorter than a configured minimum. Loading history...
467			$token = '';
468			for ($i = 0, $ct = strlen($ts); $i < $ct; $i++) {
469			$token .= substr($ts, $i, 1) . substr($hash, $j, $insert) . substr($hashModule, $i, 2);
470			$j += $insert;
471			}
472			$token .= substr($hash, ($insert * strlen($ts)), strlen($hash) - ($insert * strlen($ts)));
473			return $token;
474			}
475
476			/**
477			* Checks if auth token is correct
478			* @param string $token
479			* @param string $secret
480			* @param string $module
481			*
482			* @return bool
483			*/
484			public static function checkToken($token, $secret, $module = 'PSFS')
485			{
486			if (0 === strlen($token) \|\| 0 === strlen($secret)) {
487			return false;
488			}
489			$module = strtolower($module);
490			$decodedToken = self::decodeToken($token, $module);
491			$expectedToken = self::decodeToken(self::generateToken($secret, $module), $module);
492
493			return $decodedToken === $expectedToken;
494			}
495
496			}
497

psfs / core

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Security::getSessionKey() A

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