From c20d7a97ddf97c654508932e2446dc991204bb8f Mon Sep 17 00:00:00 2001
From: Thomas Rasch <thomas.rasch@outdooractive.com>
Date: Wed, 28 Jun 2023 12:08:21 +0200
Subject: [PATCH] Check for invalid geometries in the WKT decoder

---
 Sources/GISTools/GeoJson/WKTCoder.swift | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Sources/GISTools/GeoJson/WKTCoder.swift b/Sources/GISTools/GeoJson/WKTCoder.swift
index 8364e54..fbed1a5 100644
--- a/Sources/GISTools/GeoJson/WKTCoder.swift
+++ b/Sources/GISTools/GeoJson/WKTCoder.swift
@@ -488,6 +488,10 @@ extension WKTCoder {
                 throw WKTCoderError.dataCorrupted
             }
 
+            guard x.isFinite, y.isFinite else {
+                throw WKTCoderError.invalidGeometry
+            }
+
             var z: Double?
             var m: Double?
 
@@ -502,6 +506,9 @@ extension WKTCoder {
                 m = vector.get(at: 2)
             }
 
+            if z?.isFinite == false { z = nil }
+            if m?.isFinite == false { m = nil }
+
             switch projection {
             case .epsg4326:
                 coordinates.append(Coordinate3D(latitude: y, longitude: x, altitude: z, m: m))