From d7904d2a5cb7820a6d89aa968e3ba99d70808051 Mon Sep 17 00:00:00 2001
From: Sebastian Pipping <sebastian@pipping.org>
Date: Mon, 6 Jan 2025 19:23:15 +0100
Subject: [PATCH] Caddyfile.generate: Support redirect-only domains

For example:
> [libexpat.github.io]
> aliases =
>         libexpat.org
>     www.libexpat.org
---
 Caddyfile.generate | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/Caddyfile.generate b/Caddyfile.generate
index 45558aa..e2fdc75 100755
--- a/Caddyfile.generate
+++ b/Caddyfile.generate
@@ -45,6 +45,9 @@ class CaddyfileGenerator:
         )
 
         for domain, backend_authority in sorted(self._backend_of.items()):
+            if backend_authority is None:
+                continue
+
             print(
                 dedent("""
                     %s {
@@ -80,7 +83,11 @@ def run(options):
             alias_domains = config.get(domain, "aliases").split()
         except NoOptionError:
             alias_domains = []
-        backend_authority = config.get(domain, "backend")
+
+        try:
+            backend_authority = config.get(domain, "backend")
+        except NoOptionError:
+            backend_authority = None
 
         site = CaddyfileGenerator.Site(alias_domains, backend_authority, domain)
         caddyfile.add(site)