From 3141ec32fe0658259cfcfa9b64860e8433029e18 Mon Sep 17 00:00:00 2001
From: Isaac Connor <isaac@zoneminder.com>
Date: Sat, 12 Jun 2021 11:57:10 -0400
Subject: [PATCH] Add a limit of 1000 when pulling sessions. Sessions table can
 contain hundreds of thousands of lines all relatively useless. Modals need to
 pop up fast.

---
 web/ajax/modals/logout.php | 19 +++++++++----------
 1 file changed, 9 insertions(+), 10 deletions(-)

diff --git a/web/ajax/modals/logout.php b/web/ajax/modals/logout.php
index a0648a70c..e9066795d 100644
--- a/web/ajax/modals/logout.php
+++ b/web/ajax/modals/logout.php
@@ -43,8 +43,8 @@ global $CLANG;
   <tbody>
 <?php
 require_once('includes/User.php');
-$result = dbQuery('SELECT * FROM Sessions ORDER BY access DESC');
-if ( ! $result ) return;
+$result = dbQuery('SELECT * FROM Sessions ORDER BY access DESC LIMIT 1000');
+if (!$result) return;
 
 $current_session = $_SESSION;
 zm_session_start();
@@ -52,25 +52,24 @@ zm_session_start();
 $user_cache = array();
 while ( $row = $result->fetch(PDO::FETCH_ASSOC) ) {
   $_SESSION = array();
-  if ( ! session_decode($row['data']) ) {
-    ZM\Warning('Failed to decode ' . $row['data']);
+  if (!session_decode($row['data'])) {
+    ZM\Warning('Failed to decode '.$row['data']);
     continue;
   }
-  ZM\Debug(print_r($_SESSION, true));
-  if ( isset($_SESSION['last_time']) )  {
+  if (isset($_SESSION['last_time']))  {
     # This is a dead session
     continue;
   }
-  if ( !isset($_SESSION['username']) ) {
+  if (!isset($_SESSION['username'])) {
     # Not logged in
     continue;
   }
-  if ( isset($user_cache[$_SESSION['username']]) ) {
+  if (isset($user_cache[$_SESSION['username']])) {
     $user = $user_cache[$_SESSION['username']];
   } else {
     $user = ZM\User::find_one(array('Username'=>$_SESSION['username']));
-    if ( ! $user ) {
-      ZM\Debug('User not found for ' . $_SESSION['username']);
+    if (!$user) {
+      ZM\Debug('User not found for '.$_SESSION['username']);
       continue;
     }
     $user_cache[$_SESSION['username']] = $user;