From 8c3c537bacf7bc8e3ef028dc075d60dcb7847d8d Mon Sep 17 00:00:00 2001
From: Mikhail Golenkov <mikhailgolenkov@catalyst-au.net>
Date: Fri, 31 Mar 2023 11:17:01 +1100
Subject: [PATCH] MDL-77592 filter_tex: Use request dir instead of temp shared
 storage

---
 filter/tex/latex.php | 29 ++---------------------------
 filter/tex/pix.php   |  2 --
 2 files changed, 2 insertions(+), 29 deletions(-)

diff --git a/filter/tex/latex.php b/filter/tex/latex.php
index c23170a8785..825a63072b0 100644
--- a/filter/tex/latex.php
+++ b/filter/tex/latex.php
@@ -16,11 +16,8 @@
          * Other platforms could/should be added
          */
         public function __construct() {
-            global $CFG;
-
-            // construct directory structure
-            $this->temp_dir = $CFG->tempdir . "/latex";
-            make_temp_directory('latex');
+            // Construct directory structure.
+            $this->temp_dir = make_request_directory();
         }
 
         /**
@@ -160,26 +157,4 @@
 
             return $img;
         }
-
-        /**
-         * Delete files created in temporary area
-         * Don't forget to copy the final gif/png before calling this
-         * @param string $filename file base (no extension)
-         */
-        function clean_up( $filename ) {
-            global $CFG;
-
-            unlink( "{$this->temp_dir}/$filename.tex" );
-            unlink( "{$this->temp_dir}/$filename.dvi" );
-            unlink( "{$this->temp_dir}/$filename.ps" );
-            $convertformat = get_config('filter_tex', 'convertformat');
-            unlink( "{$this->temp_dir}/$filename.{$convertformat}" );
-            unlink( "{$this->temp_dir}/$filename.aux" );
-            unlink( "{$this->temp_dir}/$filename.log" );
-            return;
-        }
-
     }
-
-
-
diff --git a/filter/tex/pix.php b/filter/tex/pix.php
index 570e47330fa..679d436bd39 100644
--- a/filter/tex/pix.php
+++ b/filter/tex/pix.php
@@ -50,8 +50,6 @@ define('NO_MOODLE_COOKIES', true); // Because it interferes with caching
             $lateximage = $latex->render($texexp, $image, 12, $density, $background);
             if ($lateximage) {
                 copy($lateximage, $pathname);
-                $latex->clean_up($md5);
-
             } else {
                 // failing that, use mimetex
                 $texexp = $texcache->rawtext;