From c11b28292da339ff26c27fe876b3306feb25bde9 Mon Sep 17 00:00:00 2001
From: Martin Vierula <martin.vierula@trustwave.com>
Date: Mon, 6 Nov 2023 20:35:05 -0800
Subject: [PATCH] Fix: validateDTD compile fails if when libxml2 not installed

---
 CHANGES                      | 2 ++
 src/operators/validate_dtd.h | 4 ++--
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/CHANGES b/CHANGES
index e012009446..8cdc5522f7 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,6 +1,8 @@
 v3.x.y - YYYY-MMM-DD (to be released)
 -------------------------------------
 
+  - Fix: validateDTD compile fails if when libxml2 not installed
+    [Issue #3014 - @zangobot, @martinhsv]
   - Fix memory leak of validateDTD's dtd object
     [Issue #3008 - @martinhsv, @zimmerle]
   - Fix memory leaks in ValidateSchema
diff --git a/src/operators/validate_dtd.h b/src/operators/validate_dtd.h
index ef1c7c231d..9de1ea1da0 100644
--- a/src/operators/validate_dtd.h
+++ b/src/operators/validate_dtd.h
@@ -33,23 +33,23 @@
 namespace modsecurity {
 namespace operators {
 
+#ifdef WITH_LIBXML2
 class XmlDtdPtrManager {
  public:
     /** @ingroup ModSecurity_Operator */
     explicit XmlDtdPtrManager(xmlDtdPtr dtd)
         : m_dtd(dtd) { }
     ~XmlDtdPtrManager() {
-#ifdef WITH_LIBXML2
         if (m_dtd != NULL) {
             xmlFreeDtd(m_dtd);
             m_dtd = NULL;
         }
-#endif
     }
     xmlDtdPtr get() const {return m_dtd;}
  private:
     xmlDtdPtr m_dtd; // The resource being managed
 };
+#endif
 
 class ValidateDTD : public Operator {
  public: