From 33851b5c16c8c89a33cf9411f8dc62afb962ec9c Mon Sep 17 00:00:00 2001
From: skodak <skodak>
Date: Mon, 14 Aug 2006 06:24:34 +0000
Subject: [PATCH] prevent access to filters when disabled in filter settings
 SC#291; merged from MOODLE_16_STABLE

---
 filter/algebra/algebradebug.php |  8 ++++++++
 filter/algebra/pix.php          | 10 ++++++++++
 filter/tex/pix.php              | 10 ++++++++++
 filter/tex/texdebug.php         |  9 +++++++++
 filter/tex/texed.php            |  9 +++++++++
 5 files changed, 46 insertions(+)

diff --git a/filter/algebra/algebradebug.php b/filter/algebra/algebradebug.php
index 6ae4967107..c1b04acc82 100644
--- a/filter/algebra/algebradebug.php
+++ b/filter/algebra/algebradebug.php
@@ -7,6 +7,14 @@
 
     require_once("../../config.php");
 
+    if (empty($CFG->textfilters)) {
+        error ('Filter not enabled!');
+    } else {
+        $filters = explode(',', $CFG->textfilters);
+        if (array_search('filter/algebra', $filters) === FALSE) {
+            error ('Filter not enabled!');
+        }
+    }
 
     $CFG->texfilterdir = "filter/tex";
     $CFG->algebrafilterdir = "filter/algebra";
diff --git a/filter/algebra/pix.php b/filter/algebra/pix.php
index d0218474d8..8fd51bff89 100644
--- a/filter/algebra/pix.php
+++ b/filter/algebra/pix.php
@@ -6,6 +6,16 @@
     $nomoodlecookie = true;     // Because it interferes with caching
 
     require_once('../../config.php');
+
+    if (empty($CFG->textfilters)) {
+        error ('Filter not enabled!');
+    } else {
+        $filters = explode(',', $CFG->textfilters);
+        if (array_search('filter/algebra', $filters) === FALSE) {
+            error ('Filter not enabled!');
+        }
+    }
+
     require_once($CFG->libdir.'/filelib.php');
 
     $CFG->texfilterdir     = 'filter/tex';
diff --git a/filter/tex/pix.php b/filter/tex/pix.php
index 0b79fba73f..1977c8eb88 100644
--- a/filter/tex/pix.php
+++ b/filter/tex/pix.php
@@ -6,6 +6,16 @@
     $nomoodlecookie = true;     // Because it interferes with caching
 
     require_once('../../config.php');
+
+    if (empty($CFG->textfilters)) {
+        error ('Filter not enabled!');
+    } else {
+        $filters = explode(',', $CFG->textfilters);
+        if (array_search('filter/tex', $filters) === FALSE) {
+            error ('Filter not enabled!');
+        }
+    }
+
     require_once($CFG->libdir.'/filelib.php');
     require_once('defaultsettings.php' );
     require_once('latex.php');
diff --git a/filter/tex/texdebug.php b/filter/tex/texdebug.php
index d6e41ae49f..2db14a7c73 100644
--- a/filter/tex/texdebug.php
+++ b/filter/tex/texdebug.php
@@ -7,6 +7,15 @@
 
     require_once("../../config.php");
 
+    if (empty($CFG->textfilters)) {
+        error ('Filter not enabled!');
+    } else {
+        $filters = explode(',', $CFG->textfilters);
+        if (array_search('filter/tex', $filters) === FALSE) {
+            error ('Filter not enabled!');
+        }
+    }
+
     $CFG->texfilterdir = "filter/tex";
     $CFG->teximagedir = "filter/tex";
 
diff --git a/filter/tex/texed.php b/filter/tex/texed.php
index 5d61b11935..c0069428f4 100644
--- a/filter/tex/texed.php
+++ b/filter/tex/texed.php
@@ -7,6 +7,15 @@
 
     require_once("../../config.php");
 
+    if (empty($CFG->textfilters)) {
+        error ('Filter not enabled!');
+    } else {
+        $filters = explode(',', $CFG->textfilters);
+        if (array_search('filter/tex', $filters) === FALSE) {
+            error ('Filter not enabled!');
+        }
+    }
+
     $CFG->texfilterdir = "filter/tex";
     $CFG->teximagedir = "filter/tex";
 
-- 
2.39.5