From 46a3c087054b70182a70c7b9da98ef598afa85ad Mon Sep 17 00:00:00 2001
From: Christopher Cook <christopher.cook@webprofusion.com>
Date: Tue, 10 Dec 2024 17:43:05 +0800
Subject: [PATCH] Fix identifier as path for cases where file starts with con.
 causing failures

---
 .../ACME/Anvil/AnvilACMEProvider.cs               | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/src/Certify.Providers/ACME/Anvil/AnvilACMEProvider.cs b/src/Certify.Providers/ACME/Anvil/AnvilACMEProvider.cs
index 8b2565ee9..f0b455854 100644
--- a/src/Certify.Providers/ACME/Anvil/AnvilACMEProvider.cs
+++ b/src/Certify.Providers/ACME/Anvil/AnvilACMEProvider.cs
@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.Globalization;
@@ -1672,7 +1672,18 @@ public async Task<ProcessStepResult> CompleteCertificateRequest(ILog log, Manage
             };
         }
 
-        private string GetIdentifierAsPath(string identifier) => identifier?.Replace("*", "_") ?? "";
+        private string GetIdentifierAsPath(string identifier)
+        {
+            var path = identifier?.Replace("*", "_") ?? "";
+
+            if (path.StartsWith("con."))
+            {
+                // on some versions of windows creating a path with a con. prefix fails.
+                path = path.Replace("con.", "_con.");
+            }
+
+            return path;
+        }
 
         private string GetPrimaryIdentifierAsPath(CertRequestConfig config, string internalId) => GetIdentifierAsPath(string.IsNullOrEmpty(config.PrimaryDomain) ? internalId : config.PrimaryDomain);