Security::extractTsAndMod() - Code Metrics - Inspection of "Some fixes" - psfs/core - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 2fe906...8dfca7 )

by Fran

created 2016-08-22 20:10 UTC

Security::extractTsAndMod() A

↳ Parent: Security

Complexity

Conditions	3
Paths	3

Size

Total Lines	13
Code Lines	9

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	0
CRAP Score	12

Importance

Changes	2
Bugs	0	Features	0

Metric	Value
cc	3
eloc	9
c	2
b	0
f	0
nc	3
nop	2
dl	0
loc	13
rs	9.4285
ccs	0
cts	11
cp	0
crap	12

<?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
     * @return array
     */
    public function getAdminProfiles()
    {
        return 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			* @return array
71			*/
72			public function getAdminProfiles()
73			{
74			return static::getProfiles();
75			}
76
77			/**
78			* Método estático que devuelve los perfiles disponibles
79			* @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...
80			*/
81			public static function getCleanProfiles()
82			{
83			return array(
84			'__SUPER_ADMIN__' => self::ADMIN_ID_TOKEN,
85			'__ADMIN__' => self::MANAGER_ID_TOKEN,
86			'__USER__' => self::USER_ID_TOKEN,
87			);
88			}
89
90			/**
91			* Método estático que devuelve los perfiles disponibles
92			* @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...
93			*/
94			public function getAdminCleanProfiles()
95			{
96			return static::getCleanProfiles();
97			}
98
99			/**
100			* Método que guarda los administradores
101			*
102			* @param array $user
103			*
104			* @return bool
105			*/
106			public static function save($user)
107			{
108			$admins = array();
109		View Code Duplication	if (file_exists(CONFIG_DIR . DIRECTORY_SEPARATOR . 'admins.json')) {
110			$admins = json_decode(file_get_contents(CONFIG_DIR . DIRECTORY_SEPARATOR . 'admins.json'), TRUE);
111			}
112			$admins[$user['username']]['hash'] = sha1($user['username'] . $user['password']);
113			$admins[$user['username']]['profile'] = $user['profile'];
114
115			return (FALSE !== file_put_contents(CONFIG_DIR . DIRECTORY_SEPARATOR . 'admins.json', json_encode($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...
116			}
117
118			/**
119			* Method to save a new admin user
120			* @param array $user
121			* @return bool
122			*/
123			public function saveUser($user)
124			{
125			$saved = false;
126			if (!empty($user)) {
127			$saved = static::save($user);
128			}
129			return $saved;
130			}
131
132			/**
133			* Servicio que actualiza los datos del usuario
134			*
135			* @param $user
136			*/
137			public function updateUser($user)
138			{
139			$this->user = $user;
140			}
141
142			/**
143			* Método que devuelve los administradores de una plataforma
144			* @return array\|mixed
145			*/
146			public function getAdmins()
147			{
148			$admins = array();
149		View Code Duplication	if (file_exists(CONFIG_DIR . DIRECTORY_SEPARATOR . 'admins.json')) {
150			$admins = json_decode(file_get_contents(CONFIG_DIR . DIRECTORY_SEPARATOR . 'admins.json'), TRUE);
151			}
152
153			return $admins;
154			}
155
156			/**
157			* Método que devuelve si un usuario tiene privilegios para acceder a la zona de administración
158			*
159			* @param null $user
160			* @param null $pass
161			*
162			* @return bool
163			* @throws \HttpException
164			*/
165			public function checkAdmin($user = NULL, $pass = NULL)
166			{
167			Logger::log('Checking admin session');
168			if (!$this->authorized) {
169			$request = Request::getInstance();
170			if (!file_exists(CONFIG_DIR . DIRECTORY_SEPARATOR . 'admins.json')) {
171			//Si no hay fichero de usuarios redirigimos directamente al gestor
172			return Router::getInstance()->getAdmin()->adminers();
173			}
174			$admins = $this->getAdmins();
175			//Sacamos las credenciales de la petición
176			$user = $user ?: $request->getServer('PHP_AUTH_USER');
177			$pass = $pass ?: $request->getServer('PHP_AUTH_PW');
178			if (NULL === $user \|\| (array_key_exists($user, $admins) && empty($admins[$user]))) {
179			list($user, $pass) = $this->getAdminFromCookie();
180			}
181			if (!empty($user) && !empty($admins[$user])) {
182			$auth = $admins[$user]['hash'];
183			$this->authorized = ($auth == sha1($user . $pass));
184			$this->admin = array(
185			'alias' => $user,
186			'profile' => $admins[$user]['profile'],
187			);
188			}
189			}
190
191			return $this->authorized;
192			}
193
194			/**
195			* Método que obtiene el usuario y contraseña de la cookie de sesión de administración
196			* @return array
197			*/
198			protected function getAdminFromCookie()
199			{
200			$auth_cookie = Request::getInstance()->getCookie($this->getHash());
201			$user = $pass = array();
202			if (!empty($auth_cookie)) {
203			list($user, $pass) = explode(':', base64_decode($auth_cookie));
204			}
205
206			return array($user, $pass);
207			}
208
209			/**
210			* Método privado para la generación del hash de la cookie de administración
211			* @return string
212			*/
213			public function getHash()
214			{
215			return substr(md5('admin'), 0, 8);
216			}
217
218			/**
219			* Método que devuelve el usuario logado
220			* @return array
221			*/
222			public function getUser()
223			{
224			return $this->user;
225			}
226
227			/**
228			* Método que devuelve el usuario administrador logado
229			* @return array
230			*/
231			public function getAdmin()
232			{
233			return $this->admin;
234			}
235
236			/**
237			* Método que calcula si se está logado o para acceder a administración
238			* @return bool
239			*/
240			public function canAccessRestrictedAdmin()
241			{
242			return $this->admin \|\| preg_match('/^\/admin\/login/i', Request::requestUri());
243			}
244
245			/**
246			* Servicio que devuelve una pantalla de error porque se necesita estar authenticado
247			*
248			* @param string\|null $route
249			*
250			* @return string\|null
251			*/
252			public function notAuthorized($route)
253			{
254			return Template::getInstance()->render('notauthorized.html.twig', array(
255			'route' => $route,
256			));
257			}
258
259			/**
260			* Servicio que chequea si un usuario es super administrador o no
261			* @return bool
262			*/
263			public function isSuperAdmin()
264			{
265			$users = $this->getAdmins();
266			$logged = $this->getAdminFromCookie();
267			$profiles = Security::getCleanProfiles();
268			if ($users[$logged[0]]) {
269			$security = $users[$logged[0]]['profile'];
270
271			return $profiles['__SUPER_ADMIN__'] === $security;
272			}
273
274			return FALSE;
275			}
276
277			/**
278			* Servicio que devuelve un dato de sesión
279			*
280			* @param string $key
281			*
282			* @return mixed
283			*/
284	2		public function getSessionKey($key)
285			{
286	2		$data = NULL;
287	2		if (array_key_exists($key, $this->session)) {
288	1		$data = $this->session[$key];
289	1		}
290
291	2		return $data;
292			}
293
294			/**
295			* Servicio que setea una variable de sesión
296			*
297			* @param string $key
298			* @param mixed $data
299			*
300			* @return Security
301			*/
302	2		public function setSessionKey($key, $data = NULL)
303			{
304	2		$this->session[$key] = $data;
305
306	2		return $this;
307			}
308
309			/**
310			* Servicio que devuelve los mensajes flash de sesiones
311			* @return mixed
312			*/
313			public function getFlashes()
314			{
315			$flashes = $this->getSessionKey(self::FLASH_MESSAGE_TOKEN);
316
317			return (NULL !== $flashes) ? $flashes : array();
318			}
319
320			/**
321			* Servicio que limpia los mensajes flash
322			* @return $this
323			*/
324	1		public function clearFlashes()
325			{
326	1		$this->setSessionKey(self::FLASH_MESSAGE_TOKEN, NULL);
327
328	1		return $this;
329			}
330
331			/**
332			* Servicio que inserta un flash en sesión
333			*
334			* @param string $key
335			* @param mixed $data
336			*/
337			public function setFlash($key, $data = NULL)
338			{
339			$flashes = $this->getFlashes();
340			if (!is_array($flashes)) {
341			$flashes = array();
342			}
343			$flashes[$key] = $data;
344			$this->setSessionKey(self::FLASH_MESSAGE_TOKEN, $flashes);
345			}
346
347			/**
348			* Servicio que devuelve un flash de sesión
349			*
350			* @param string $key
351			*
352			* @return mixed
353			*/
354			public function getFlash($key)
355			{
356			$flashes = $this->getFlashes();
357
358			return (NULL !== $key && array_key_exists($key, $flashes)) ? $flashes[$key] : NULL;
359			}
360
361			/**
362			* Servicio que actualiza
363			*
364			* @param boolean $closeSession
365			*
366			* @return Security
367			*/
368			public function updateSession($closeSession = FALSE)
369			{
370			Logger::log('Update session');
371			$_SESSION = $this->session;
372			$_SESSION[self::USER_ID_TOKEN] = serialize($this->user);
373			$_SESSION[self::ADMIN_ID_TOKEN] = serialize($this->admin);
374			if ($closeSession) {
375			Logger::log('Close session');
376			session_write_close();
377			}
378			Logger::log('Session updated');
379			return $this;
380			}
381
382			/**
383			* Servicio que limpia la sesión
384			*/
385			public function closeSession()
386			{
387			session_destroy();
388			session_regenerate_id(TRUE);
389			}
390
391			/**
392			* Extract parts from token
393			* @param string $token
394			*
395			* @return array
			0 ignored issues – show Documentation introduced 2016-05-07 10:58 UTC by Report Bug Copy Issue Report Consider making the return type a bit more specific; maybe use `array<double\|integer\|array>`. This check looks for the generic type `array` as a return type and suggests a more specific type. This type is inferred from the actual code. Loading history...
396			*/
397			private static function extractTokenParts($token)
398			{
399			$axis = 0;
400			$parts = array();
401			try {
402			$partLength = floor(strlen($token) / 10);
403			for ($i = 0, $ct = ceil(strlen($token) / $partLength); $i < $ct; $i++) {
404			$parts[] = substr($token, $axis, $partLength);
405			$axis += $partLength;
406			}
407			} catch (\Exception $e) {
408			$partLength = 0;
409			}
410
411			return array($partLength, $parts);
412			}
413
414			/**
415			* Extract Ts and Module from token
416			* @param array $parts
417			* @param int $partLength
418			*
419			* @return array
			0 ignored issues – show Documentation introduced 2016-05-07 10:58 UTC by Report Bug Copy Issue Report Consider making the return type a bit more specific; maybe use `string[]`. This check looks for the generic type `array` as a return type and suggests a more specific type. This type is inferred from the actual code. Loading history...
420			*/
421			private static function extractTsAndMod(array &$parts, $partLength)
422			{
423			$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...
424			$mod = '';
425			foreach ($parts as &$part) {
426			if (strlen($part) == $partLength) {
427			$ts .= substr($part, 0, 1);
428			$mod .= substr($part, $partLength - 2, 2);
429			$part = substr($part, 1, $partLength - 3);
430			}
431			}
432			return array($ts, $mod);
433			}
434
435			/**
436			* Decode token to check authorized request
437			* @param string $token
438			* @param string $module
439			*
440			* @return null\|string
441			*/
442			private static function decodeToken($token, $module = 'PSFS')
443			{
444			$decoded = NULL;
445			list($partLength, $parts) = self::extractTokenParts($token);
446			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...
447			$hashMod = substr(strtoupper(sha1($module)), strlen($ts) / 2, strlen($ts) * 2);
448			if (time() - (integer)$ts < 300 && $hashMod === $mod) {
449			$decoded = implode('', $parts);
450			}
451			return $decoded;
452			}
453
454			/**
455			* Generate a authorized token
456			* @param string $secret
457			* @param string $module
458			*
459			* @return string
460			*/
461			public static function generateToken($secret, $module = 'PSFS')
462			{
463			$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...
464			$hashModule = substr(strtoupper(sha1($module)), strlen($ts) / 2, strlen($ts) * 2);
465			$hash = hash('sha256', $secret);
466			$insert = floor(strlen($hash) / strlen($ts));
467			$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...
468			$token = '';
469			for ($i = 0, $ct = strlen($ts); $i < $ct; $i++) {
470			$token .= substr($ts, $i, 1) . substr($hash, $j, $insert) . substr($hashModule, $i, 2);
471			$j += $insert;
472			}
473			$token .= substr($hash, ($insert * strlen($ts)), strlen($hash) - ($insert * strlen($ts)));
474			return $token;
475			}
476
477			/**
478			* Checks if auth token is correct
479			* @param string $token
480			* @param string $secret
481			* @param string $module
482			*
483			* @return bool
484			*/
485			public static function checkToken($token, $secret, $module = 'PSFS')
486			{
487			if (0 === strlen($token) \|\| 0 === strlen($secret)) {
488			return false;
489			}
490			$module = strtolower($module);
491			$decodedToken = self::decodeToken($token, $module);
492			$expectedToken = self::decodeToken(self::generateToken($secret, $module), $module);
493
494			return $decodedToken === $expectedToken;
495			}
496
497			}
498

psfs / core

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Security::extractTsAndMod() A

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