FO: Fix #PSCFV-5800 don't send any cookie on canonical redirection

classes/Cookie.php

@@ -51,6 +51,8 @@ class CookieCore
 	protected $_iv;
 
 	protected $_modified = false;
+	
+	protected $_allow_writing;
 
 	/**
 	 * Get data if the cookie exists and else initialize an new one
@@ -71,6 +73,7 @@ class CookieCore
 		$this->_key = _COOKIE_KEY_;
 		$this->_iv = _COOKIE_IV_;
 		$this->_domain = $this->getDomain($shared_urls);
+		$this->_allow_writing = true;
 		if (Configuration::get('PS_CIPHER_ALGORITHM'))
 			$this->_cipherTool = new Rijndael(_RIJNDAEL_KEY_, _RIJNDAEL_IV_);
 		else
@@ -78,6 +81,11 @@ class CookieCore
 		$this->update();
 	}
 
+	public function disallowWriting()
+	{
+		$this->_allow_writing = false;
+	}
+
 	protected function getDomain($shared_urls = null)
 	{
 		$r = '!(?:(\w+)://)?(?:(\w+)\:(\w+)@)?([^/:]+)?(?:\:(\d*))?([^#?]+)?(?:\?([^#]+))?(?:#(.+$))?!i';
@@ -325,7 +333,7 @@ class CookieCore
 	 */
 	public function write()
 	{
-		if (!$this->_modified || headers_sent())
+		if (!$this->_modified || headers_sent() || !$this->_allow_writing)
 			return;
 
 		$cookie = '';