1 files changed, 64 insertions, 0 deletions
diff --git a/core/Session.php b/core/Session.php
new file mode 100644
index 0000000000..d4f11e9ef9
--- /dev/null
+++ b/core/Session.php
@@ -0,0 +1,64 @@
+<?php
+/**
+ * Piwik - Open source web analytics
+ * 
+ * @link http://piwik.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html Gpl v3 or later
+ * @version $Id$
+ * 
+ * @category Piwik
+ * @package Piwik
+ */
+
+/**
+ * Session initialization.
+ * 
+ * @package Piwik
+ */
+class Piwik_Session extends Zend_Session
+{
+    public static function start($options = false)
+	{
+		// don't use the default: PHPSESSID
+		$sessionName = defined('PIWIK_SESSION_NAME') ? PIWIK_SESSION_NAME : 'PIWIK_SESSID';
+		@ini_set('session.name', $sessionName);
+
+		// we consider this a misconfiguration (i.e., Piwik doesn't implement user-defined session handler functions)
+		if(ini_get('session.save_handler') == 'user')
+		{
+			@ini_set('session.save_handler', 'files');
+			@ini_set('session.save_path', '');
+		}
+
+		// for "files", we want a writeable folder
+		if(ini_get('session.save_handler') == 'files')
+		{
+			$sessionPath = ini_get('session.save_path');
+			if(preg_match('/^[0-9]+;(.*)/', $sessionPath, $matches))
+			{
+				$sessionPath = $matches[1];
+			}
+			if(ini_get('safe_mode') || ini_get('open_basedir') || empty($sessionPath) || !@is_writable($sessionPath))
+			{
+				$sessionPath = PIWIK_USER_PATH . '/tmp/sessions';
+
+				if(!is_dir($sessionPath))
+				{
+					@mkdir($sessionPath, 0755, true);
+					if(!is_dir($sessionPath))
+					{
+						die("Error: Unable to mkdir $sessionPath");
+					}
+				}
+				else if(!@is_writable($sessionPath))
+				{
+					die("Error: $sessionPath is not writable");
+				}
+
+				@ini_set('session.save_path', $sessionPath);
+			}
+		}
+
+		Zend_Session::start();
+	}
+}