From e200bad9e537be4fe52ba9c2b42b754276286a72 Mon Sep 17 00:00:00 2001
From: "Collin M. Barrett" <collinbarrett@users.noreply.github.com>
Date: Sat, 13 Jul 2019 14:09:50 -0500
Subject: [PATCH] catch if URL is improperly formatted

---
 src/FilterLists.Agent/Infrastructure/Web/UrlValidator.cs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/FilterLists.Agent/Infrastructure/Web/UrlValidator.cs b/src/FilterLists.Agent/Infrastructure/Web/UrlValidator.cs
index 15af62157..99bdbf6e5 100644
--- a/src/FilterLists.Agent/Infrastructure/Web/UrlValidator.cs
+++ b/src/FilterLists.Agent/Infrastructure/Web/UrlValidator.cs
@@ -27,6 +27,14 @@ public UrlValidator(HttpClient httpClient, ILogger<UrlValidator> logger)
         public async Task<EntityUrl> ValidateAsync(EntityUrl entityUrl, CancellationToken cancellationToken)
         {
             var url = entityUrl.Url;
+            if (!Uri.IsWellFormedUriString(url.OriginalString, UriKind.Absolute))
+            {
+                entityUrl.SetBroken();
+                _logger.LogError(
+                    $"Url validation for ({url.OriginalString}) failed because it appears to be improperly formatted.");
+                return entityUrl;
+            }
+
             try
             {
                 using var response =