EncryptedCookieSession Class Reference

Inheritance diagram for EncryptedCookieSession:

Public Member Functions
	__construct ( $key)
	open ( $save_path, $session_name)
	close ()
	destroy ($session_id)
	gc ($maxlifetime)
	read ($session_id)
	write ($session_id, $session_data)

Private Attributes
	$save_path
	$session_name
	$session_key
	$last_read

Detailed Description

Definition at line 4212 of file grima-lib.php.

Constructor & Destructor Documentation

__construct()

EncryptedCookieSession::__construct

(

$key

)

Definition at line 4220 of file grima-lib.php.

References $key.

                                         {

         $this->session_key = $key;

         $this->last_read = "Not This";

     }

Member Function Documentation

close()

EncryptedCookieSession::close

(

)

Definition at line 4232 of file grima-lib.php.

                              {

         #error_log("session_close()");


         return true;

     }

destroy()

EncryptedCookieSession::destroy

(

$session_id

)

Definition at line 4237 of file grima-lib.php.

                                           {

         #error_log("session_destroy($session_id)");


         $params = session_get_cookie_params();

         $params['expires'] = time() - 42000;

         unset($params['lifetime']);

         setcookie( $this->session_name, '', $params );

         return true;

     }

gc()

EncryptedCookieSession::gc

(

$maxlifetime

)

Definition at line 4246 of file grima-lib.php.

                                       {

         #error_log("session_gc($maxlifetime)");


         return true;

     }

open()

EncryptedCookieSession::open	(		$save_path,
			$session_name
	)

Definition at line 4225 of file grima-lib.php.

                                                        {

         $this->save_path = $save_path;

         $this->session_name = $session_name;

         #error_log("session_open($save_path,$session_name)");


         return true;

     }

read()

EncryptedCookieSession::read

(

$session_id

)

Definition at line 4251 of file grima-lib.php.

References $ciphertext, and $plaintext.

                                        {

         #error_log("session_read($session_id)");


         $nonce_ciphertext_b64 = isset( $_COOKIE[$this->session_name] ) ? $_COOKIE[$this->session_name] : "";

         if ($nonce_ciphertext_b64) {

             $nonce_ciphertext = base64_decode( $nonce_ciphertext_b64 );

             if (strlen($nonce_ciphertext)>24+16) {

                 $nonce = substr( $nonce_ciphertext, 0, 24 );

                 $ciphertext = substr( $nonce_ciphertext, 24 );

                 $plaintext = sodium_crypto_secretbox_open( $ciphertext, $nonce, $this->session_key );

                 #error_log("session_read -> $plaintext");


                 $this->last_read = $plaintext;

                 return $plaintext ?: "";

             } else {

                 error_log("cookie too short: $nonce_ciphertext_b64");

             }

         } else {

             #error_log("cookie not set or empty");


         }

         return "";

     }

write()

EncryptedCookieSession::write	(		$session_id,
			$session_data
	)

Definition at line 4272 of file grima-lib.php.

References $ciphertext.

                                                        {

         #error_log("session_write($session_id,$session_data)");


         if (!$session_data) return true;

         if ($this->last_read == $session_data) return true;

         $nonce = random_bytes(24);

         $ciphertext = sodium_crypto_secretbox( $session_data, $nonce, $this->session_key );

         $nonce_ciphertext = $nonce.$ciphertext;

         $nonce_ciphertext_b64 = base64_encode( $nonce_ciphertext );

         $options = session_get_cookie_params();

         if (isset($options['expires']) && $options['expires']) {

             $options['expires'] += time();

         }

         unset($options['lifetime']);

         setcookie( $this->session_name, $nonce_ciphertext_b64, $options );

         return true;

     }

Member Data Documentation

$last_read

EncryptedCookieSession::$last_read

private

Definition at line 4218 of file grima-lib.php.

$save_path

EncryptedCookieSession::$save_path

private

Definition at line 4215 of file grima-lib.php.

$session_key

EncryptedCookieSession::$session_key

private

Definition at line 4217 of file grima-lib.php.

$session_name

EncryptedCookieSession::$session_name

private

Definition at line 4216 of file grima-lib.php.

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The documentation for this class was generated from the following file:

• grimas/grima-lib.php