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-rw-r--r--application/config/config.php5
-rw-r--r--system/libraries/Session/Session.php83
-rw-r--r--system/libraries/Session/Session_driver.php24
-rw-r--r--user_guide_src/source/changelog.rst1
-rw-r--r--user_guide_src/source/libraries/sessions.rst2
5 files changed, 94 insertions, 21 deletions
diff --git a/application/config/config.php b/application/config/config.php
index 161b95699..ee599c7aa 100644
--- a/application/config/config.php
+++ b/application/config/config.php
@@ -341,6 +341,10 @@ $config['encryption_key'] = '';
|
| The session cookie name, must contain only [0-9a-z_-] characters
|
+| 'sess_samesite'
+|
+| Session cookie SameSite attribute: Lax (default), Strict or None
+|
| 'sess_expiration'
|
| The number of SECONDS you want the session to last.
@@ -381,6 +385,7 @@ $config['encryption_key'] = '';
*/
$config['sess_driver'] = 'files';
$config['sess_cookie_name'] = 'ci_session';
+$config['sess_samesite'] = 'Lax';
$config['sess_expiration'] = 7200;
$config['sess_save_path'] = NULL;
$config['sess_match_ip'] = FALSE;
diff --git a/system/libraries/Session/Session.php b/system/libraries/Session/Session.php
index ed379146d..1c5c980ae 100644
--- a/system/libraries/Session/Session.php
+++ b/system/libraries/Session/Session.php
@@ -154,15 +154,36 @@ class CI_Session {
// unless it is being currently created or regenerated
elseif (isset($_COOKIE[$this->_config['cookie_name']]) && $_COOKIE[$this->_config['cookie_name']] === session_id())
{
- setcookie(
- $this->_config['cookie_name'],
- session_id(),
- (empty($this->_config['cookie_lifetime']) ? 0 : time() + $this->_config['cookie_lifetime']),
- $this->_config['cookie_path'],
- $this->_config['cookie_domain'],
- $this->_config['cookie_secure'],
- TRUE
- );
+ $expires = empty($this->_config['cookie_lifetime']) ? 0 : time() + $this->_config['cookie_lifetime'];
+ if (is_php('7.3'))
+ {
+ setcookie(
+ $this->_config['cookie_name'],
+ session_id(),
+ array(
+ 'expires' => $expires,
+ 'path' => $this->_config['cookie_path'],
+ 'domain' => $this->_config['cookie_domain'],
+ 'secure' => $this->_config['cookie_secure'],
+ 'httponly' => TRUE,
+ 'samesite' => $this->_config['cookie_samesite']
+ )
+ );
+ }
+ else
+ {
+ $header = 'Set-Cookie: '.$this->_config['cookie_name'].'='.session_id();
+ $header .= empty($expires) ? '' : '; Expires='.gmdate('D, d-M-Y H:i:s T', $expires).'; Max-Age='.$this->_config['cookie_lifetime'];
+ $header .= '; Path='.$this->_config['cookie_path'];
+ $header .= ($this->_config['cookie_domain'] !== '' ? '; Domain='.$this->_config['cookie_domain'] : '');
+ $header .= ($this->_config['cookie_secure'] ? '; Secure' : '').'; HttpOnly; SameSite='.$this->_config['cookie_samesite'];
+ header($header);
+ }
+
+ if ( ! $this->_config['cookie_secure'] && $this->_config['cookie_samesite'] === 'None')
+ {
+ log_message('error', 'Session:', $this->_config['cookie_name'].' cookie sent with SameSite=None, but without Secure attribute.');
+ }
}
$this->_ci_init_vars();
@@ -284,13 +305,43 @@ class CI_Session {
isset($params['cookie_domain']) OR $params['cookie_domain'] = config_item('cookie_domain');
isset($params['cookie_secure']) OR $params['cookie_secure'] = (bool) config_item('cookie_secure');
- session_set_cookie_params(
- $params['cookie_lifetime'],
- $params['cookie_path'],
- $params['cookie_domain'],
- $params['cookie_secure'],
- TRUE // HttpOnly; Yes, this is intentional and not configurable for security reasons
- );
+ isset($params['cookie_samesite']) OR $params['cookie_samesite'] = config_item('sess_samesite');
+ if ( ! isset($params['cookie_samesite']) && is_php('7.3'))
+ {
+ $params['cookie_samesite'] = ini_get('session.cookie_samesite');
+ }
+
+ if (isset($params['cookie_samesite']))
+ {
+ $params['cookie_samesite'] = ucfirst(strtolower($params['cookie_samesite']));
+ in_array($params['cookie_samesite'], array('Lax', 'Strict', 'None'), TRUE) OR $params['cookie_samesite'] = 'Lax';
+ }
+ else
+ {
+ $params['cookie_samesite'] = 'Lax';
+ }
+
+ if (is_php('7.3'))
+ {
+ session_set_cookie_params(array(
+ 'lifetime' => $params['cookie_lifetime'],
+ 'path' => $params['cookie_path'],
+ 'domain' => $params['cookie_domain'],
+ 'secure' => $params['cookie_secure'],
+ 'httponly' => $params['cookie_httponly'],
+ 'samesite' => $params['cookie_samesite']
+ ));
+ }
+ else
+ {
+ session_set_cookie_params(
+ $params['cookie_lifetime'],
+ $params['cookie_path'],
+ $params['cookie_domain'],
+ $params['cookie_secure'],
+ TRUE // HttpOnly; Yes, this is intentional and not configurable for security reasons
+ );
+ }
if (empty($expiration))
{
diff --git a/system/libraries/Session/Session_driver.php b/system/libraries/Session/Session_driver.php
index d78492b5e..b1b1b073e 100644
--- a/system/libraries/Session/Session_driver.php
+++ b/system/libraries/Session/Session_driver.php
@@ -140,14 +140,28 @@ abstract class CI_Session_driver {
*/
protected function _cookie_destroy()
{
+ if ( ! is_php('7.3'))
+ {
+ $header = 'Set-Cookie: '.$this->_config['cookie_name'].'=';
+ $header .= '; Expires='.gmdate('D, d-M-Y H:i:s T', 1).'; Max-Age=-1';
+ $header .= '; Path='.$this->_config['cookie_path'];
+ $header .= ($this->_config['cookie_domain'] !== '' ? '; Domain='.$this->_config['cookie_domain'] : '');
+ $header .= ($this->_config['cookie_secure'] ? '; Secure' : '').'; HttpOnly; SameSite='.$this->_config['cookie_samesite'];
+ header($header);
+ return;
+ }
+
return setcookie(
$this->_config['cookie_name'],
NULL,
- 1,
- $this->_config['cookie_path'],
- $this->_config['cookie_domain'],
- $this->_config['cookie_secure'],
- TRUE
+ array(
+ 'expires' => 1,
+ 'path' => $this->_config['cookie_path'],
+ 'domain' => $this->_config['cookie_domain'],
+ 'secure' => $this->_config['cookie_secure'],
+ 'httponly' => TRUE,
+ 'samesite' => $this->_config['cookie_samesite']
+ )
);
}
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index 0c61136c3..0e347f891 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -17,6 +17,7 @@ Release Date: Not Released
- Updated :doc:`Database Library <database/index>` 'pdo' driver to attempt to free resources in order to allow connections to be closed.
- Added ``SameSite=Strict`` attribute to the CSRF cookie sent by the :doc:`Security Class <libraries/security>`.
- Added ``$config['cookie_samesite']`` option and ``$samesite`` parameter to :doc:`Input Library <libraries/input>` method ``set_cookie()``.
+ - Added ``SameSite`` support through ``$config['sess_samesite']`` option to the :doc:`Session Library <libraries/sessions>`.
- Added a wrapper class around :doc:`Session <libraries/sessions>` drivers to deal with compatibility between PHP 8.1 and older versions.
- Updated a lot of code for PHP 8.0 and 8.1 compatibility.
diff --git a/user_guide_src/source/libraries/sessions.rst b/user_guide_src/source/libraries/sessions.rst
index 994dc2e08..ced4463d0 100644
--- a/user_guide_src/source/libraries/sessions.rst
+++ b/user_guide_src/source/libraries/sessions.rst
@@ -438,6 +438,8 @@ Preference Default Options
============================ =============== ======================================== ============================================================================================
**sess_driver** files files/database/redis/memcached/*custom* The session storage driver to use.
**sess_cookie_name** ci_session [A-Za-z\_-] characters only The name used for the session cookie.
+**sess_samesite** ci_session 'Lax', 'Strict' or 'None' SameSite attribute value for session cookies.
+ Defaults to ``session.cookie_samesite`` on PHP 7.3+ or 'Lax' if not present at all.
**sess_expiration** 7200 (2 hours) Time in seconds (integer) The number of seconds you would like the session to last.
If you would like a non-expiring session (until browser is closed) set the value to zero: 0
**sess_save_path** NULL None Specifies the storage location, depends on the driver being used.
generated by cgit v1.2.3-24-g4f1b (git 2.32.0) at 2024-11-22 14:18:38 +0100