Move session ID check to SessionManager

Relates to https://github.com/shaarli/Shaarli/issues/324

Changed:
- `is_session_id_valid()` -> `SessionManager::checkId()`
- update tests

Signed-off-by: VirtualTam <virtualtam@flibidi.net>

2 files changed, 30 insertions, 30 deletions

diff --git a/application/SessionManager.php b/application/SessionManager.php
index 2083df42..3aa4ddfc 100644
--- a/application/SessionManager.php
+++ b/application/SessionManager.php
@@ -50,4 +50,34 @@ class SessionManager
         unset($this->session['tokens'][$token]);
         return true;
     }
+
+    /**
+     * Validate session ID to prevent Full Path Disclosure.
+     *
+     * See #298.
+     * The session ID's format depends on the hash algorithm set in PHP settings
+     *
+     * @param string $sessionId Session ID
+     *
+     * @return true if valid, false otherwise.
+     *
+     * @see http://php.net/manual/en/function.hash-algos.php
+     * @see http://php.net/manual/en/session.configuration.php
+     */
+    public static function checkId($sessionId)
+    {
+        if (empty($sessionId)) {
+            return false;
+        }
+
+        if (!$sessionId) {
+            return false;
+        }
+
+        if (!preg_match('/^[a-zA-Z0-9,-]{2,128}$/', $sessionId)) {
+            return false;
+        }
+
+        return true;
+    }
 }
diff --git a/application/Utils.php b/application/Utils.php
index 2f38a8de..97b12fcf 100644
--- a/application/Utils.php
+++ b/application/Utils.php
@@ -182,36 +182,6 @@ function generateLocation($referer, $host, $loopTerms = array())
 }
 
 /**
- * Validate session ID to prevent Full Path Disclosure.
- *
- * See #298.
- * The session ID's format depends on the hash algorithm set in PHP settings
- *
- * @param string $sessionId Session ID
- *
- * @return true if valid, false otherwise.
- *
- * @see http://php.net/manual/en/function.hash-algos.php
- * @see http://php.net/manual/en/session.configuration.php
- */
-function is_session_id_valid($sessionId)
-{
-    if (empty($sessionId)) {
-        return false;
-    }
-
-    if (!$sessionId) {
-        return false;
-    }
-
-    if (!preg_match('/^[a-zA-Z0-9,-]{2,128}$/', $sessionId)) {
-        return false;
-    }
-
-    return true;
-}
-
-/**
  * Sniff browser language to set the locale automatically.
  * Note that is may not work on your server if the corresponding locale is not installed.
  *