From a9da3dd2f16a8f97d7bc4ff5572b28e4bb84c813 Mon Sep 17 00:00:00 2001
From: Andrey Andreev <narf@devilix.net>
Date: Tue, 12 Jun 2018 16:40:12 +0300
Subject: [ci skip] Prepare 3.1.9 release

---
 .../Session/drivers/Session_database_driver.php    | 26 ++++++++++++++++++++++
 1 file changed, 26 insertions(+)

(limited to 'system/libraries/Session/drivers/Session_database_driver.php')

diff --git a/system/libraries/Session/drivers/Session_database_driver.php b/system/libraries/Session/drivers/Session_database_driver.php
index ae7a1b4a1..074accfe7 100644
--- a/system/libraries/Session/drivers/Session_database_driver.php
+++ b/system/libraries/Session/drivers/Session_database_driver.php
@@ -133,6 +133,8 @@ class CI_Session_database_driver extends CI_Session_driver implements SessionHan
 			return $this->_fail();
 		}
 
+		$this->php5_validate_id();
+
 		return $this->_success;
 	}
 
@@ -340,6 +342,30 @@ class CI_Session_database_driver extends CI_Session_driver implements SessionHan
 			: $this->_fail();
 	}
 
+	// --------------------------------------------------------------------
+
+	/**
+	 * Validate ID
+	 *
+	 * Checks whether a session ID record exists server-side,
+	 * to enforce session.use_strict_mode.
+	 *
+	 * @param	string	$id
+	 * @return	bool
+	 */
+	public function validateId($id)
+	{
+		// Prevent previous QB calls from messing with our queries
+		$this->_db->reset_query();
+
+		$this->_db->select('1')->from($this->_config['save_path'])->where('id', $id);
+		empty($this->_config['match_ip']) OR $this->_db->where('ip_address', $_SERVER['REMOTE_ADDR']);
+		$result = $this->_db->get();
+		empty($result) OR $result = $result->row();
+
+		return ! empty($result);
+	}
+
 	// ------------------------------------------------------------------------
 
 	/**
-- 
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