diff --git a/htdocs/sql/libraries/auth/signon.auth.lib.php b/htdocs/sql/libraries/auth/signon.auth.lib.php
new file mode 100755
--- /dev/null
+++ b/htdocs/sql/libraries/auth/signon.auth.lib.php
@@ -0,0 +1,174 @@
+<?php
+/* vim: set expandtab sw=4 ts=4 sts=4: */
+/**
+ * Set of functions used to run single signon authentication.
+ *
+ * @version $Id: signon.auth.lib.php 10424 2007-06-07 17:14:21Z lem9 $
+ */
+
+
+/**
+ * Displays authentication form
+ *
+ * @global  string    the font face to use in case of failure
+ * @global  string    the default font size to use in case of failure
+ * @global  string    the big font size to use in case of failure
+ *
+ * @return  boolean   always true (no return indeed)
+ *
+ * @access  public
+ */
+function PMA_auth() {
+    if (empty($GLOBALS['cfg']['Server']['SignonURL'])) {
+        PMA_fatalError('You must set SignonURL!');
+    } elseif (!empty($_REQUEST['old_usr']) && !empty($GLOBALS['cfg']['Server']['LogoutURL'])) {
+        /* Perform logout to custom URL */
+        PMA_sendHeaderLocation($GLOBALS['cfg']['Server']['LogoutURL']);
+    } else {
+        PMA_sendHeaderLocation($GLOBALS['cfg']['Server']['SignonURL']);
+    }
+    exit();
+} // end of the 'PMA_auth()' function
+
+
+/**
+ * Gets advanced authentication settings
+ *
+ * @global  string    the username if register_globals is on
+ * @global  string    the password if register_globals is on
+ * @global  array     the array of server variables if register_globals is
+ *                    off
+ * @global  array     the array of environment variables if register_globals
+ *                    is off
+ * @global  string    the username for the ? server
+ * @global  string    the password for the ? server
+ * @global  string    the username for the WebSite Professional server
+ * @global  string    the password for the WebSite Professional server
+ * @global  string    the username of the user who logs out
+ *
+ * @return  boolean   whether we get authentication settings or not
+ *
+ * @access  public
+ */
+function PMA_auth_check()
+{
+    global $PHP_AUTH_USER, $PHP_AUTH_PW;
+
+    /* Session name */
+    $session_name = $GLOBALS['cfg']['Server']['SignonSession'];
+
+    /* Current host */
+    $single_signon_host = $GLOBALS['cfg']['Server']['host'];
+
+    /* Are we requested to do logout? */
+    $do_logout = !empty($_REQUEST['old_usr']);
+
+    /* Does session exist? */
+    if (isset($_COOKIE[$session_name])) {
+        /* End current session */
+        $old_session = session_name();
+        $old_id = session_id();
+        session_write_close();
+
+        /* Load single signon session */
+        session_name($session_name);
+        session_id($_COOKIE[$session_name]);
+        session_start();
+
+        /* Grab credentials if they exist */
+        if (isset($_SESSION['PMA_single_signon_user'])) {
+            if ($do_logout) {
+                $PHP_AUTH_USER = '';
+            } else {
+                $PHP_AUTH_USER = $_SESSION['PMA_single_signon_user'];
+            }
+        }
+        if (isset($_SESSION['PMA_single_signon_password'])) {
+            if ($do_logout) {
+                $PHP_AUTH_PW = '';
+            } else {
+                $PHP_AUTH_PW = $_SESSION['PMA_single_signon_password'];
+            }
+        }
+        if (isset($_SESSION['PMA_single_signon_host'])) {
+	        $single_signon_host = $_SESSION['PMA_single_signon_host'];
+        }
+        /* Also get token as it is needed to access subpages */
+        if (isset($_SESSION['PMA_single_signon_token'])) {
+            /* No need to care about token on logout */
+            $pma_token = $_SESSION['PMA_single_signon_token'];
+        }
+
+        /* End single signon session */
+        session_write_close();
+
+        /* Restart phpMyAdmin session */
+        session_name($old_session);
+        if (!empty($old_id)) {
+            session_id($old_id);
+        }
+        session_start();
+
+	/* Set the single signon host */
+	$GLOBALS['cfg']['Server']['host']=$single_signon_host;
+
+        /* Restore our token */
+        if (!empty($pma_token)) {
+            $_SESSION[' PMA_token '] = $pma_token;
+        }
+    }
+
+    // Returns whether we get authentication settings or not
+    if (empty($PHP_AUTH_USER)) {
+        return false;
+    } else {
+        return true;
+    }
+} // end of the 'PMA_auth_check()' function
+
+
+/**
+ * Set the user and password after last checkings if required
+ *
+ * @global  array     the valid servers settings
+ * @global  integer   the id of the current server
+ * @global  array     the current server settings
+ * @global  string    the current username
+ * @global  string    the current password
+ *
+ * @return  boolean   always true
+ *
+ * @access  public
+ */
+function PMA_auth_set_user()
+{
+    global $cfg;
+    global $PHP_AUTH_USER, $PHP_AUTH_PW;
+
+    $cfg['Server']['user']     = $PHP_AUTH_USER;
+    $cfg['Server']['password'] = $PHP_AUTH_PW;
+
+    return true;
+} // end of the 'PMA_auth_set_user()' function
+
+
+/**
+ * User is not allowed to login to MySQL -> authentication failed
+ *
+ * @return  boolean   always true (no return indeed)
+ *
+ * @access  public
+ */
+function PMA_auth_fails()
+{
+    $error = PMA_DBI_getError();
+    if ($error && $GLOBALS['errno'] != 1045) {
+        PMA_fatalError($error);
+    } else {
+        PMA_auth();
+        return true;
+    }
+
+} // end of the 'PMA_auth_fails()' function
+
+?>