From 3017a4c1656975f9ff8ca5431a10d23aedeb2ba0 Mon Sep 17 00:00:00 2001
From: matt rice <ratmice@gmail.com>
Date: Sat, 20 Apr 2024 06:55:48 -0700
Subject: [PATCH] PtexReader.cpp: validate mesh_type in header on open

Signed-off-by: matt rice <ratmice@gmail.com>
---
 src/ptex/PtexReader.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/ptex/PtexReader.cpp b/src/ptex/PtexReader.cpp
index b814e1c..a4cbd16 100644
--- a/src/ptex/PtexReader.cpp
+++ b/src/ptex/PtexReader.cpp
@@ -169,6 +169,14 @@ bool PtexReader::open(const char* pathArg, Ptex::String& error)
         closeFP();
         return 0;
     }
+    if (!(_header.meshtype == mt_triangle || _header.meshtype == mt_quad)) {
+        std::stringstream s;
+        s << "Invalid mesh type (" << _header.meshtype << "): " << pathArg;
+	error = s.str();
+	_ok = 0;
+	closeFP();
+	return 0;
+    }
     _pixelsize = _header.pixelSize();
     _errorPixel.resize(_pixelsize);