- new class for simple session management

2025-03-12 00:45:34 +00:00 · 2011-01-11 08:02:45 +00:00 · 2011-01-11 08:02:45 +00:00 · f9cf7309d4
commit f9cf7309d4
parent 7329d1ecb7
1 changed files with 120 additions and 0 deletions
--- a/inc/inc.ClassSession.php
+++ b/inc/inc.ClassSession.php
@ -0,0 +1,120 @@
+<?php
+/**
+ * Implementation of the user object in the document management system
+ *
+ * @category   DMS
+ * @package    LetoDMS
+ * @license    GPL 2
+ * @version    @version@
+ * @author     Uwe Steinmann <uwe@steinmann.cx>
+ * @copyright  2011 Uwe Steinmann
+ * @version    Release: @package_version@
+ */
+
+/**
+ * Class to represent a user in the document management system
+ *
+ * @category   DMS
+ * @package    LetoDMS
+ * @author     Markus Westphal, Malcolm Cowe, Uwe Steinmann <uwe@steinmann.cx>
+ * @copyright  2011 Uwe Steinmann
+ * @version    Release: @package_version@
+ */
+class LetoDMS_Session {
+	/**
+	 * @var object $db reference to database object. This must be an instance
+	 *      of {@link LetoDMS_DatabaseAccess}.
+	 * @access protected
+	 */
+	protected $db;
+
+	/**
+	 * @var array $data session data
+	 * @access protected
+	 */
+	protected $data;
+
+	/**
+	 * @var string $id session id
+	 * @access protected
+	 */
+	protected $id;
+
+	/**
+	 * Create a new instance of the session handler
+	 *
+	 * @param object $db object to access the underlying database
+	 * @return object instance of LetoDMS_Session
+	 */
+	function __construct($db) { /* {{{ */
+		$this->db = $db;
+	} /* }}} */
+
+	/**
+	 * Load session by its id
+	 *
+	 * @param string $id id of session
+	 * @return boolean true if successful otherwise false
+	 */
+	function load($id) { /* {{{ */
+		$queryStr = "SELECT * FROM tblSessions WHERE id = '".$id."'";
+		$resArr = $this->db->getResultArray($queryStr);
+		if (is_bool($resArr) && $resArr == false)
+			return false;
+		if (count($resArr) == 0)
+			return false;
+		$queryStr = "UPDATE tblSessions SET lastAccess = " . mktime() . " WHERE id = '" . $id . "'";
+		if (!$this->db->getResult($queryStr))
+			return false;
+		return $resArr[0];
+	} /* }}} */
+
+	/**
+	 * Create a new session and saving the given data
+	 *
+	 * @param array $data data saved in session (the only fields supported
+	 *        are userid, theme, language)
+	 * @return string/boolean id of session of false in case of an error
+	 */
+	function create($data) { /* {{{ */
+		$id = "" . rand() . mktime() . rand() . "";
+		$id = md5($id);
+		$queryStr = "INSERT INTO tblSessions (id, userID, lastAccess, theme, language) ".
+		  "VALUES ('".$id."', ".$data['userid'].", ".mktime().", '".$data['theme']."', '".$data['lang']."')";
+		if (!$this->db->getResult($queryStr)) {
+			return false;
+		}
+		$this->id = $id;
+		$this->data = $data;
+		return $id;
+	} /* }}} */
+
+	/**
+	 * Delete old sessions older than a given time
+	 *
+	 * @param integer $sec maximum number of seconds a session may live
+	 * @return boolean true if successful otherwise false
+	 */
+	function deleteByTime($sec) {
+		$queryStr = "DELETE FROM tblSessions WHERE " . mktime() . " - lastAccess > ".$sec;
+		if (!$this->db->getResult($queryStr)) {
+			return false;
+		}
+		return true;
+	}
+
+	/**
+	 * Delete session by its id
+	 *
+	 * @param string $id id of session
+	 * @return boolean true if successful otherwise false
+	 */
+	function delete($id) { /* {{{ */
+		$queryStr = "DELETE FROM tblSessions WHERE id = '$id'";
+		if (!$this->db->getResult($queryStr)) {
+			return false;
+		}
+		return true;
+	} /* }}} */
+}
+?>