Merge pull request #823 from narfbg/develop-session
Improve the Session library
diff --git a/system/libraries/Session.php b/system/libraries/Session.php
index 08d2ba4..137b037 100644
--- a/system/libraries/Session.php
+++ b/system/libraries/Session.php
@@ -1,13 +1,13 @@
-<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
* CodeIgniter
*
* An open source application development framework for PHP 5.1.6 or newer
*
* NOTICE OF LICENSE
- *
+ *
* Licensed under the Open Software License version 3.0
- *
+ *
* This source file is subject to the Open Software License (OSL 3.0) that is
* bundled with this package in the files license.txt / license.rst. It is
* also available through the world wide web at this URL:
@@ -38,26 +38,26 @@
*/
class CI_Session {
- var $sess_encrypt_cookie = FALSE;
- var $sess_use_database = FALSE;
- var $sess_table_name = '';
- var $sess_expiration = 7200;
- var $sess_expire_on_close = FALSE;
- var $sess_match_ip = FALSE;
- var $sess_match_useragent = TRUE;
- var $sess_cookie_name = 'ci_session';
- var $cookie_prefix = '';
- var $cookie_path = '';
- var $cookie_domain = '';
- var $cookie_secure = FALSE;
- var $sess_time_to_update = 300;
- var $encryption_key = '';
- var $flashdata_key = 'flash';
- var $time_reference = 'time';
- var $gc_probability = 5;
- var $userdata = array();
- var $CI;
- var $now;
+ public $sess_encrypt_cookie = FALSE;
+ public $sess_use_database = FALSE;
+ public $sess_table_name = '';
+ public $sess_expiration = 7200;
+ public $sess_expire_on_close = FALSE;
+ public $sess_match_ip = FALSE;
+ public $sess_match_useragent = TRUE;
+ public $sess_cookie_name = 'ci_session';
+ public $cookie_prefix = '';
+ public $cookie_path = '';
+ public $cookie_domain = '';
+ public $cookie_secure = FALSE;
+ public $sess_time_to_update = 300;
+ public $encryption_key = '';
+ public $flashdata_key = 'flash';
+ public $time_reference = 'time';
+ public $gc_probability = 5;
+ public $userdata = array();
+ public $CI;
+ public $now;
/**
* Session Constructor
@@ -109,7 +109,7 @@
{
$this->sess_expiration = (60*60*24*365*2);
}
-
+
// Set the cookie name
$this->sess_cookie_name = $this->cookie_prefix.$this->sess_cookie_name;
@@ -141,10 +141,9 @@
/**
* Fetch the current session data if it exists
*
- * @access public
* @return bool
*/
- function sess_read()
+ public function sess_read()
{
// Fetch the cookie
$session = $this->CI->input->cookie($this->sess_cookie_name);
@@ -194,14 +193,14 @@
}
// Does the IP Match?
- if ($this->sess_match_ip == TRUE AND $session['ip_address'] != $this->CI->input->ip_address())
+ if ($this->sess_match_ip == TRUE AND $session['ip_address'] !== $this->CI->input->ip_address())
{
$this->sess_destroy();
return FALSE;
}
// Does the User Agent Match?
- if ($this->sess_match_useragent == TRUE AND trim($session['user_agent']) != trim(substr($this->CI->input->user_agent(), 0, 120)))
+ if ($this->sess_match_useragent == TRUE AND trim($session['user_agent']) !== trim(substr($this->CI->input->user_agent(), 0, 120)))
{
$this->sess_destroy();
return FALSE;
@@ -225,7 +224,7 @@
$query = $this->CI->db->get($this->sess_table_name);
// No result? Kill it!
- if ($query->num_rows() == 0)
+ if ($query->num_rows() === 0)
{
$this->sess_destroy();
return FALSE;
@@ -259,10 +258,9 @@
/**
* Write the session data
*
- * @access public
* @return void
*/
- function sess_write()
+ public function sess_write()
{
// Are we saving custom data to the DB? If not, all we do is update the cookie
if ($this->sess_use_database === FALSE)
@@ -311,16 +309,16 @@
/**
* Create a new session
*
- * @access public
* @return void
*/
- function sess_create()
+ public function sess_create()
{
$sessid = '';
- while (strlen($sessid) < 32)
+ do
{
$sessid .= mt_rand(0, mt_getrandmax());
}
+ while (strlen($sessid) < 32);
// To make the session ID even more secure we'll combine it with the user's IP
$sessid .= $this->CI->input->ip_address();
@@ -349,10 +347,9 @@
/**
* Update an existing session
*
- * @access public
* @return void
*/
- function sess_update()
+ public function sess_update()
{
// We only update the session every five minutes by default
if (($this->userdata['last_activity'] + $this->sess_time_to_update) >= $this->now)
@@ -364,19 +361,17 @@
// update in the database if we need it
$old_sessid = $this->userdata['session_id'];
$new_sessid = '';
- while (strlen($new_sessid) < 32)
+ do
{
$new_sessid .= mt_rand(0, mt_getrandmax());
}
+ while (strlen($new_sessid) < 32);
// To make the session ID even more secure we'll combine it with the user's IP
$new_sessid .= $this->CI->input->ip_address();
- // Turn it into a hash
- $new_sessid = md5(uniqid($new_sessid, TRUE));
-
- // Update the session data in the session data array
- $this->userdata['session_id'] = $new_sessid;
+ // Turn it into a hash and update the session data array
+ $this->userdata['session_id'] = $new_sessid = md5(uniqid($new_sessid, TRUE));
$this->userdata['last_activity'] = $this->now;
// _set_cookie() will handle this for us if we aren't using database sessions
@@ -405,10 +400,9 @@
/**
* Destroy the current session
*
- * @access public
* @return void
*/
- function sess_destroy()
+ public function sess_destroy()
{
// Kill the session DB row
if ($this->sess_use_database === TRUE AND isset($this->userdata['session_id']))
@@ -433,11 +427,10 @@
/**
* Fetch a specific item from the session array
*
- * @access public
* @param string
* @return string
*/
- function userdata($item)
+ public function userdata($item)
{
return ( ! isset($this->userdata[$item])) ? FALSE : $this->userdata[$item];
}
@@ -447,10 +440,9 @@
/**
* Fetch all session data
*
- * @access public
* @return array
*/
- function all_userdata()
+ public function all_userdata()
{
return $this->userdata;
}
@@ -460,12 +452,11 @@
/**
* Add or change data in the "userdata" array
*
- * @access public
* @param mixed
* @param string
* @return void
*/
- function set_userdata($newdata = array(), $newval = '')
+ public function set_userdata($newdata = array(), $newval = '')
{
if (is_string($newdata))
{
@@ -488,10 +479,9 @@
/**
* Delete a session variable from the "userdata" array
*
- * @access array
* @return void
*/
- function unset_userdata($newdata = array())
+ public function unset_userdata($newdata = array())
{
if (is_string($newdata))
{
@@ -515,12 +505,11 @@
* Add or change flashdata, only available
* until the next request
*
- * @access public
* @param mixed
* @param string
* @return void
*/
- function set_flashdata($newdata = array(), $newval = '')
+ public function set_flashdata($newdata = array(), $newval = '')
{
if (is_string($newdata))
{
@@ -531,8 +520,7 @@
{
foreach ($newdata as $key => $val)
{
- $flashdata_key = $this->flashdata_key.':new:'.$key;
- $this->set_userdata($flashdata_key, $val);
+ $this->set_userdata($this->flashdata_key.':new:'.$key, $val);
}
}
}
@@ -542,21 +530,18 @@
/**
* Keeps existing flashdata available to next request.
*
- * @access public
* @param string
* @return void
*/
- function keep_flashdata($key)
+ public function keep_flashdata($key)
{
// 'old' flashdata gets removed. Here we mark all
// flashdata as 'new' to preserve it from _flashdata_sweep()
// Note the function will return FALSE if the $key
// provided cannot be found
- $old_flashdata_key = $this->flashdata_key.':old:'.$key;
- $value = $this->userdata($old_flashdata_key);
+ $value = $this->userdata($this->flashdata_key.':old:'.$key);
- $new_flashdata_key = $this->flashdata_key.':new:'.$key;
- $this->set_userdata($new_flashdata_key, $value);
+ $this->set_userdata($this->flashdata_key.':new:'.$key, $value);
}
// ------------------------------------------------------------------------
@@ -564,14 +549,12 @@
/**
* Fetch a specific flashdata item from the session array
*
- * @access public
* @param string
* @return string
*/
- function flashdata($key)
+ public function flashdata($key)
{
- $flashdata_key = $this->flashdata_key.':old:'.$key;
- return $this->userdata($flashdata_key);
+ return $this->userdata($this->flashdata_key.':old:'.$key);
}
// ------------------------------------------------------------------------
@@ -580,10 +563,9 @@
* Identifies flashdata as 'old' for removal
* when _flashdata_sweep() runs.
*
- * @access private
* @return void
*/
- function _flashdata_mark()
+ protected function _flashdata_mark()
{
$userdata = $this->all_userdata();
foreach ($userdata as $name => $value)
@@ -591,8 +573,7 @@
$parts = explode(':new:', $name);
if (is_array($parts) && count($parts) === 2)
{
- $new_name = $this->flashdata_key.':old:'.$parts[1];
- $this->set_userdata($new_name, $value);
+ $this->set_userdata($this->flashdata_key.':old:'.$parts[1], $value);
$this->unset_userdata($name);
}
}
@@ -603,11 +584,10 @@
/**
* Removes all flashdata marked as 'old'
*
- * @access private
* @return void
*/
- function _flashdata_sweep()
+ protected function _flashdata_sweep()
{
$userdata = $this->all_userdata();
foreach ($userdata as $key => $value)
@@ -625,22 +605,17 @@
/**
* Get the "now" time
*
- * @access private
* @return string
*/
- function _get_time()
+ protected function _get_time()
{
- if (strtolower($this->time_reference) == 'gmt')
+ if (strtolower($this->time_reference) === 'gmt')
{
$now = time();
- $time = mktime(gmdate("H", $now), gmdate("i", $now), gmdate("s", $now), gmdate("m", $now), gmdate("d", $now), gmdate("Y", $now));
- }
- else
- {
- $time = time();
+ return mktime(gmdate('H', $now), gmdate('i', $now), gmdate('s', $now), gmdate('m', $now), gmdate('d', $now), gmdate('Y', $now));
}
- return $time;
+ return time();
}
// --------------------------------------------------------------------
@@ -648,10 +623,9 @@
/**
* Write the session cookie
*
- * @access public
* @return void
*/
- function _set_cookie($cookie_data = NULL)
+ protected function _set_cookie($cookie_data = NULL)
{
if (is_null($cookie_data))
{
@@ -692,32 +666,27 @@
* This function first converts any slashes found in the array to a temporary
* marker, so when it gets unserialized the slashes will be preserved
*
- * @access private
* @param array
* @return string
*/
- function _serialize($data)
+ protected function _serialize($data)
{
if (is_array($data))
{
array_walk_recursive($data, array(&$this, '_escape_slashes'));
}
- else
+ elseif (is_string($data))
{
- if (is_string($data))
- {
- $data = str_replace('\\', '{{slash}}', $data);
- }
+ $data = str_replace('\\', '{{slash}}', $data);
}
return serialize($data);
}
-
+
/**
* Escape slashes
*
* This function converts any slashes found into a temporary marker
*
- * @access private
*/
function _escape_slashes(&$val, $key)
{
@@ -735,11 +704,10 @@
* This function unserializes a data string, then converts any
* temporary slash markers back to actual slashes
*
- * @access private
* @param array
* @return string
*/
- function _unserialize($data)
+ protected function _unserialize($data)
{
$data = @unserialize(strip_slashes($data));
@@ -751,15 +719,14 @@
return (is_string($data)) ? str_replace('{{slash}}', '\\', $data) : $data;
}
-
+
/**
* Unescape slashes
*
* This function converts any slash markers back into actual slashes
*
- * @access private
*/
- function _unescape_slashes(&$val, $key)
+ protected function _unescape_slashes(&$val, $key)
{
if (is_string($val))
{
@@ -775,10 +742,9 @@
* This deletes expired session rows from database
* if the probability percentage is met
*
- * @access public
* @return void
*/
- function _sess_gc()
+ protected function _sess_gc()
{
if ($this->sess_use_database != TRUE)
{
@@ -802,4 +768,4 @@
// END Session Class
/* End of file Session.php */
-/* Location: ./system/libraries/Session.php */
\ No newline at end of file
+/* Location: ./system/libraries/Session.php */