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-rw-r--r--system/libraries/Session/Session.php130
1 files changed, 103 insertions, 27 deletions
diff --git a/system/libraries/Session/Session.php b/system/libraries/Session/Session.php
index b93c00c15..3e4865cd1 100644
--- a/system/libraries/Session/Session.php
+++ b/system/libraries/Session/Session.php
@@ -6,7 +6,7 @@
*
* This content is released under the MIT License (MIT)
*
- * Copyright (c) 2014 - 2016, British Columbia Institute of Technology
+ * Copyright (c) 2014 - 2017, British Columbia Institute of Technology
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
@@ -29,7 +29,7 @@
* @package CodeIgniter
* @author EllisLab Dev Team
* @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
- * @copyright Copyright (c) 2014 - 2016, British Columbia Institute of Technology (http://bcit.ca/)
+ * @copyright Copyright (c) 2014 - 2017, British Columbia Institute of Technology (http://bcit.ca/)
* @license http://opensource.org/licenses/MIT MIT License
* @link https://codeigniter.com
* @since Version 2.0.0
@@ -57,6 +57,7 @@ class CI_Session {
protected $_driver = 'files';
protected $_config;
+ protected $_sid_regexp;
// ------------------------------------------------------------------------
@@ -91,6 +92,7 @@ class CI_Session {
// Note: BC workaround
elseif (config_item('sess_use_database'))
{
+ log_message('debug', 'Session: "sess_driver" is empty; using BC fallback to "sess_use_database".');
$this->_driver = 'database';
}
@@ -98,27 +100,12 @@ class CI_Session {
// Configuration ...
$this->_configure($params);
+ $this->_config['_sid_regexp'] = $this->_sid_regexp;
$class = new $class($this->_config);
if ($class instanceof SessionHandlerInterface)
{
- if (is_php('5.4'))
- {
- session_set_save_handler($class, TRUE);
- }
- else
- {
- session_set_save_handler(
- array($class, 'open'),
- array($class, 'close'),
- array($class, 'read'),
- array($class, 'write'),
- array($class, 'destroy'),
- array($class, 'gc')
- );
-
- register_shutdown_function('session_write_close');
- }
+ session_set_save_handler($class, TRUE);
}
else
{
@@ -130,7 +117,7 @@ class CI_Session {
if (isset($_COOKIE[$this->_config['cookie_name']])
&& (
! is_string($_COOKIE[$this->_config['cookie_name']])
- OR ! preg_match('/^[0-9a-f]{40}$/', $_COOKIE[$this->_config['cookie_name']])
+ OR ! preg_match('#\A'.$this->_sid_regexp.'\z#', $_COOKIE[$this->_config['cookie_name']])
)
)
{
@@ -187,9 +174,6 @@ class CI_Session {
*/
protected function _ci_load_classes($driver)
{
- // PHP 5.4 compatibility
- interface_exists('SessionHandlerInterface', FALSE) OR require_once(BASEPATH.'libraries/Session/SessionHandlerInterface.php');
-
$prefix = config_item('subclass_prefix');
if ( ! class_exists('CI_Session_driver', FALSE))
@@ -231,7 +215,7 @@ class CI_Session {
}
}
- if ( ! class_exists($prefix.$class) && file_exists($file_path = APPPATH.'libraries/Session/drivers/'.$prefix.$class.'.php'))
+ if ( ! class_exists($prefix.$class, FALSE) && file_exists($file_path = APPPATH.'libraries/Session/drivers/'.$prefix.$class.'.php'))
{
require_once($file_path);
if (class_exists($prefix.$class, FALSE))
@@ -314,8 +298,82 @@ class CI_Session {
ini_set('session.use_strict_mode', 1);
ini_set('session.use_cookies', 1);
ini_set('session.use_only_cookies', 1);
- ini_set('session.hash_function', 1);
- ini_set('session.hash_bits_per_character', 4);
+
+ $this->_configure_sid_length();
+ }
+
+ // ------------------------------------------------------------------------
+
+ /**
+ * Configure session ID length
+ *
+ * To make life easier, we used to force SHA-1 and 4 bits per
+ * character on everyone. And of course, someone was unhappy.
+ *
+ * Then PHP 7.1 broke backwards-compatibility because ext/session
+ * is such a mess that nobody wants to touch it with a pole stick,
+ * and the one guy who does, nobody has the energy to argue with.
+ *
+ * So we were forced to make changes, and OF COURSE something was
+ * going to break and now we have this pile of shit. -- Narf
+ *
+ * @return void
+ */
+ protected function _configure_sid_length()
+ {
+ if (PHP_VERSION_ID < 70100)
+ {
+ $hash_function = ini_get('session.hash_function');
+ if (ctype_digit($hash_function))
+ {
+ if ($hash_function !== '1')
+ {
+ ini_set('session.hash_function', 1);
+ }
+
+ $bits = 160;
+ }
+ elseif ( ! in_array($hash_function, hash_algos(), TRUE))
+ {
+ ini_set('session.hash_function', 1);
+ $bits = 160;
+ }
+ elseif (($bits = strlen(hash($hash_function, 'dummy', false)) * 4) < 160)
+ {
+ ini_set('session.hash_function', 1);
+ $bits = 160;
+ }
+
+ $bits_per_character = (int) ini_get('session.hash_bits_per_character');
+ $sid_length = (int) ceil($bits / $bits_per_character);
+ }
+ else
+ {
+ $bits_per_character = (int) ini_get('session.sid_bits_per_character');
+ $sid_length = (int) ini_get('session.sid_length');
+ if (($bits = $sid_length * $bits_per_character) < 160)
+ {
+ // Add as many more characters as necessary to reach at least 160 bits
+ $sid_length += (int) ceil((160 % $bits) / $bits_per_character);
+ ini_set('session.sid_length', $sid_length);
+ }
+ }
+
+ // Yes, 4,5,6 are the only known possible values as of 2016-10-27
+ switch ($bits_per_character)
+ {
+ case 4:
+ $this->_sid_regexp = '[0-9a-f]';
+ break;
+ case 5:
+ $this->_sid_regexp = '[0-9a-v]';
+ break;
+ case 6:
+ $this->_sid_regexp = '[0-9a-zA-Z,-]';
+ break;
+ }
+
+ $this->_sid_regexp .= '{'.$sid_length.'}';
}
// ------------------------------------------------------------------------
@@ -584,6 +642,24 @@ class CI_Session {
// ------------------------------------------------------------------------
/**
+ * __isset()
+ *
+ * @param string $key 'session_id' or a session data key
+ * @return bool
+ */
+ public function __isset($key)
+ {
+ if ($key === 'session_id')
+ {
+ return (session_status() === PHP_SESSION_ACTIVE);
+ }
+
+ return isset($_SESSION[$key]);
+ }
+
+ // ------------------------------------------------------------------------
+
+ /**
* __set()
*
* @param string $key Session data key
@@ -711,7 +787,7 @@ class CI_Session {
*
* Legacy CI_Session compatibility method
*
- * @param mixed $data Session data key(s)
+ * @param mixed $key Session data key(s)
* @return void
*/
public function unset_userdata($key)
generated by cgit v1.2.3-24-g4f1b (git 2.32.0) at 2024-11-13 14:04:50 +0100