From b28f97c5c3f1dac24a373d502d91325a635a595e Mon Sep 17 00:00:00 2001
From: Isaac Connor <isaac@zoneminder.com>
Date: Wed, 2 Feb 2022 10:49:05 -0500
Subject: [PATCH] Implement filter limits.  Which go before pagination/advanced
 search limits

---
 dep/RtspServer      |  2 +-
 web/ajax/events.php | 13 ++++++++++++-
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/dep/RtspServer b/dep/RtspServer
index cd7fd49be..eab328514 160000
--- a/dep/RtspServer
+++ b/dep/RtspServer
@@ -1 +1 @@
-Subproject commit cd7fd49becad6010a1b8466bfebbd93999a39878
+Subproject commit eab32851421ffe54fec0229c3efc44c642bc8d46
diff --git a/web/ajax/events.php b/web/ajax/events.php
index 090fe476e..6ef5ff354 100644
--- a/web/ajax/events.php
+++ b/web/ajax/events.php
@@ -182,6 +182,9 @@ function queryRequest($filter, $search, $advsearch, $sort, $offset, $order, $lim
   $sort = $sort == 'Monitor' ? 'M.Name' : 'E.'.$sort;
   $col_str = 'E.*, M.Name AS Monitor';
   $sql = 'SELECT ' .$col_str. ' FROM `Events` AS E INNER JOIN Monitors AS M ON E.MonitorId = M.Id'.$where.' ORDER BY '.$sort.' '.$order;
+  if ($filter->limit() and !count($filter->pre_sql_conditions()) and !count($filter->post_sql_conditions())) {
+    $sql .= ' LIMIT '.$filter->limit();
+  }
 
   $storage_areas = ZM\Storage::find();
   $StorageById = array();
@@ -208,6 +211,12 @@ function queryRequest($filter, $search, $advsearch, $sort, $offset, $order, $lim
     $unfiltered_rows[] = $row;
   } # end foreach row
 
+  # Filter limits come before pagination limits.
+  if ($filter->limit() and ($filter->limit() > count($unfiltered_rows))) {
+    ZM\Debug("Filtering rows due to filter->limit " . count($unfiltered_rows)." limit: ".$filter->limit());
+    $unfiltered_rows = array_slice($unfiltered_rows, 0, $filter->limit());
+  }
+
   ZM\Debug('Have ' . count($unfiltered_rows) . ' events matching base filter.');
 
   $filtered_rows = null;
@@ -246,8 +255,10 @@ function queryRequest($filter, $search, $advsearch, $sort, $offset, $order, $lim
     $filtered_rows = $unfiltered_rows;
   } # end if search_filter->terms() > 1
 
-  if ($limit) 
+  if ($limit) {
+    ZM\Debug("Filtering rows due to limit " . count($filtered_rows)." offset: $offset limit: $limit");
     $filtered_rows = array_slice($filtered_rows, $offset, $limit);
+  }
 
   $returned_rows = array();
   foreach ($filtered_rows as $row) {