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-rw-r--r--system/libraries/Session.php145
1 files changed, 84 insertions, 61 deletions
diff --git a/system/libraries/Session.php b/system/libraries/Session.php
index 04103a4d9..104b88810 100644
--- a/system/libraries/Session.php
+++ b/system/libraries/Session.php
@@ -25,8 +25,6 @@
* @filesource
*/
-// ------------------------------------------------------------------------
-
/**
* Session Class
*
@@ -67,7 +65,7 @@ class CI_Session {
*/
public function __construct($params = array())
{
- log_message('debug', "Session Class Initialized");
+ log_message('debug', 'Session Class Initialized');
// Set the super object to a local variable for use throughout the class
$this->CI =& get_instance();
@@ -93,14 +91,14 @@ class CI_Session {
$this->CI->load->library('encrypt');
}
- // Are we using a database? If so, load it
- if ($this->sess_use_database === TRUE AND $this->sess_table_name != '')
+ // Are we using a database? If so, load it
+ if ($this->sess_use_database === TRUE && $this->sess_table_name != '')
{
$this->CI->load->database();
}
- // Set the "now" time. Can either be GMT or server time, based on the
- // config prefs. We use this to set the "last activity" time
+ // Set the "now" time. Can either be GMT or server time, based on the
+ // config prefs. We use this to set the "last activity" time
$this->now = $this->_get_time();
// Set the session length. If the session expiration is
@@ -114,7 +112,7 @@ class CI_Session {
$this->sess_cookie_name = $this->cookie_prefix.$this->sess_cookie_name;
// Run the Session routine. If a session doesn't exist we'll
- // create a new one. If it does, we'll update it.
+ // create a new one. If it does, we'll update it.
if ( ! $this->sess_read())
{
$this->sess_create();
@@ -133,7 +131,7 @@ class CI_Session {
// Delete expired sessions if necessary
$this->_sess_gc();
- log_message('debug', "Session routines successfully run");
+ log_message('debug', 'Session routines successfully run');
}
// --------------------------------------------------------------------
@@ -166,7 +164,7 @@ class CI_Session {
$hash = substr($session, strlen($session)-32); // get last 32 chars
$session = substr($session, 0, strlen($session)-32);
- // Does the md5 hash match? This is to prevent manipulation of session data in userspace
+ // Does the md5 hash match? This is to prevent manipulation of session data in userspace
if ($hash !== md5($session.$this->encryption_key))
{
log_message('error', 'The session cookie data did not match what was expected. This could be a possible hacking attempt.');
@@ -179,7 +177,7 @@ class CI_Session {
$session = $this->_unserialize($session);
// Is the session data we unserialized an array with the correct format?
- if ( ! is_array($session) OR ! isset($session['session_id']) OR ! isset($session['ip_address']) OR ! isset($session['user_agent']) OR ! isset($session['last_activity']))
+ if ( ! is_array($session) OR ! isset($session['session_id'], $session['ip_address'], $session['user_agent'], $session['last_activity']))
{
$this->sess_destroy();
return FALSE;
@@ -192,15 +190,15 @@ class CI_Session {
return FALSE;
}
- // Does the IP Match?
- if ($this->sess_match_ip == TRUE AND $session['ip_address'] !== $this->CI->input->ip_address())
+ // Does the IP match?
+ if ($this->sess_match_ip == TRUE && $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 ($this->sess_match_useragent == TRUE && trim($session['user_agent']) !== trim(substr($this->CI->input->user_agent(), 0, 120)))
{
$this->sess_destroy();
return FALSE;
@@ -221,9 +219,9 @@ class CI_Session {
$this->CI->db->where('user_agent', $session['user_agent']);
}
- $query = $this->CI->db->get($this->sess_table_name);
+ $query = $this->CI->db->limit(1)->get($this->sess_table_name);
- // No result? Kill it!
+ // No result? Kill it!
if ($query->num_rows() === 0)
{
$this->sess_destroy();
@@ -232,7 +230,7 @@ class CI_Session {
// Is there custom data? If so, add it to the main session array
$row = $query->row();
- if (isset($row->user_data) AND $row->user_data != '')
+ if (isset($row->user_data) && $row->user_data != '')
{
$custom_data = $this->_unserialize($row->user_data);
@@ -282,7 +280,7 @@ class CI_Session {
$cookie_userdata[$val] = $this->userdata[$val];
}
- // Did we find any custom data? If not, we turn the empty array into a string
+ // Did we find any custom data? If not, we turn the empty array into a string
// since there's no reason to serialize and store an empty array in the DB
if (count($custom_userdata) === 0)
{
@@ -298,7 +296,7 @@ class CI_Session {
$this->CI->db->where('session_id', $this->userdata['session_id']);
$this->CI->db->update($this->sess_table_name, array('last_activity' => $this->userdata['last_activity'], 'user_data' => $custom_userdata));
- // Write the cookie. Notice that we manually pass the cookie data array to the
+ // Write the cookie. Notice that we manually pass the cookie data array to the
// _set_cookie() function. Normally that function will store $this->userdata, but
// in this case that array contains custom data, which we do not want in the cookie.
$this->_set_cookie($cookie_userdata);
@@ -324,13 +322,12 @@ class CI_Session {
$sessid .= $this->CI->input->ip_address();
$this->userdata = array(
- 'session_id' => md5(uniqid($sessid, TRUE)),
- 'ip_address' => $this->CI->input->ip_address(),
- 'user_agent' => substr($this->CI->input->user_agent(), 0, 120),
- 'last_activity' => $this->now,
- 'user_data' => ''
- );
-
+ 'session_id' => md5(uniqid($sessid, TRUE)),
+ 'ip_address' => $this->CI->input->ip_address(),
+ 'user_agent' => substr($this->CI->input->user_agent(), 0, 120),
+ 'last_activity' => $this->now,
+ 'user_data' => ''
+ );
// Save the data to the DB if needed
if ($this->sess_use_database === TRUE)
@@ -357,6 +354,35 @@ class CI_Session {
return;
}
+ // _set_cookie() will handle this for us if we aren't using database sessions
+ // by pushing all userdata to the cookie.
+ $cookie_data = NULL;
+
+ /* Changing the session ID during an AJAX call causes problems,
+ * so we'll only update our last_activity
+ */
+ if ($this->CI->input->is_ajax_request())
+ {
+ $this->userdata['last_activity'] = $this->now;
+
+ // Update the session ID and last_activity field in the DB if needed
+ if ($this->sess_use_database === TRUE)
+ {
+ // set cookie explicitly to only have our session data
+ $cookie_data = array();
+ foreach (array('session_id','ip_address','user_agent','last_activity') as $val)
+ {
+ $cookie_data[$val] = $this->userdata[$val];
+ }
+
+ $this->CI->db->query($this->CI->db->update_string($this->sess_table_name,
+ array('last_activity' => $this->userdata['last_activity']),
+ array('session_id' => $this->userdata['session_id'])));
+ }
+
+ return $this->_set_cookie($cookie_data);
+ }
+
// Save the old session id so we know which record to
// update in the database if we need it
$old_sessid = $this->userdata['session_id'];
@@ -374,10 +400,6 @@ class CI_Session {
$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
- // by pushing all userdata to the cookie.
- $cookie_data = NULL;
-
// Update the session ID and last_activity field in the DB if needed
if ($this->sess_use_database === TRUE)
{
@@ -405,7 +427,7 @@ class CI_Session {
public function sess_destroy()
{
// Kill the session DB row
- if ($this->sess_use_database === TRUE AND isset($this->userdata['session_id']))
+ if ($this->sess_use_database === TRUE && isset($this->userdata['session_id']))
{
$this->CI->db->where('session_id', $this->userdata['session_id']);
$this->CI->db->delete($this->sess_table_name);
@@ -413,13 +435,13 @@ class CI_Session {
// Kill the cookie
setcookie(
- $this->sess_cookie_name,
- addslashes(serialize(array())),
- ($this->now - 31500000),
- $this->cookie_path,
- $this->cookie_domain,
- 0
- );
+ $this->sess_cookie_name,
+ addslashes(serialize(array())),
+ ($this->now - 31500000),
+ $this->cookie_path,
+ $this->cookie_domain,
+ 0
+ );
}
// --------------------------------------------------------------------
@@ -432,7 +454,7 @@ class CI_Session {
*/
public function userdata($item)
{
- return ( ! isset($this->userdata[$item])) ? FALSE : $this->userdata[$item];
+ return isset($this->userdata[$item]) ? $this->userdata[$item] : FALSE;
}
// --------------------------------------------------------------------
@@ -535,7 +557,7 @@ class CI_Session {
*/
public function keep_flashdata($key)
{
- // 'old' flashdata gets removed. Here we mark all
+ // '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
@@ -586,7 +608,6 @@ class CI_Session {
*
* @return void
*/
-
protected function _flashdata_sweep()
{
$userdata = $this->all_userdata();
@@ -609,13 +630,9 @@ class CI_Session {
*/
protected function _get_time()
{
- if (strtolower($this->time_reference) === 'gmt')
- {
- $now = time();
- return mktime(gmdate('H', $now), gmdate('i', $now), gmdate('s', $now), gmdate('m', $now), gmdate('d', $now), gmdate('Y', $now));
- }
-
- return time();
+ return (strtolower($this->time_reference) === 'gmt')
+ ? mktime(gmdate('H'), gmdate('i'), gmdate('s'), gmdate('m'), gmdate('d'), gmdate('Y'))
+ : time();
}
// --------------------------------------------------------------------
@@ -649,13 +666,13 @@ class CI_Session {
// Set the cookie
setcookie(
- $this->sess_cookie_name,
- $cookie_data,
- $expire,
- $this->cookie_path,
- $this->cookie_domain,
- $this->cookie_secure
- );
+ $this->sess_cookie_name,
+ $cookie_data,
+ $expire,
+ $this->cookie_path,
+ $this->cookie_domain,
+ $this->cookie_secure
+ );
}
// --------------------------------------------------------------------
@@ -687,8 +704,11 @@ class CI_Session {
*
* This function converts any slashes found into a temporary marker
*
+ * @param string
+ * @param string
+ * @return void
*/
- function _escape_slashes(&$val, $key)
+ protected function _escape_slashes(&$val, $key)
{
if (is_string($val))
{
@@ -709,7 +729,7 @@ class CI_Session {
*/
protected function _unserialize($data)
{
- $data = @unserialize(strip_slashes($data));
+ $data = @unserialize(strip_slashes(trim($data)));
if (is_array($data))
{
@@ -717,14 +737,19 @@ class CI_Session {
return $data;
}
- return (is_string($data)) ? str_replace('{{slash}}', '\\', $data) : $data;
+ return is_string($data) ? str_replace('{{slash}}', '\\', $data) : $data;
}
+ // --------------------------------------------------------------------
+
/**
* Unescape slashes
*
* This function converts any slash markers back into actual slashes
*
+ * @param string
+ * @param string
+ * @return void
*/
protected function _unescape_slashes(&$val, $key)
{
@@ -756,16 +781,14 @@ class CI_Session {
{
$expire = $this->now - $this->sess_expiration;
- $this->CI->db->where("last_activity < {$expire}");
+ $this->CI->db->where('last_activity < '.$expire);
$this->CI->db->delete($this->sess_table_name);
log_message('debug', 'Session garbage collection performed.');
}
}
-
}
-// END Session Class
/* End of file Session.php */
/* Location: ./system/libraries/Session.php */
generated by cgit v1.2.3-24-g4f1b (git 2.32.0) at 2024-12-18 03:57:43 +0100