From 9bdb6595175e615ee531e92d2d3a0d37dec70f85 Mon Sep 17 00:00:00 2001
From: "Thomas A. Hirsch" <thomas.hirsch@vema-eg.de>
Date: Thu, 27 Apr 2023 18:41:29 +0200
Subject: [PATCH] Fixes #49: Converts the matched term to lower case before
 detecting the used mechanism.

---
 src/Model/Record.php            |  2 +-
 tests/issue49/issue49-tests.yml | 16 ++++++++++++++++
 2 files changed, 17 insertions(+), 1 deletion(-)
 create mode 100644 tests/issue49/issue49-tests.yml

diff --git a/src/Model/Record.php b/src/Model/Record.php
index 260b11e..4cce9ba 100644
--- a/src/Model/Record.php
+++ b/src/Model/Record.php
@@ -55,7 +55,7 @@ public function getTerms(): iterable
             }
             $cidr4 = array_key_exists('cidr4', $matches) && $matches['cidr4'] !== '' ? intval($matches['cidr4']) : null;
             $cidr6 = array_key_exists('cidr6', $matches) && $matches['cidr6'] !== '' ? intval($matches['cidr6']) : null;
-            switch($matches['term']) {
+            switch(strtolower($matches['term'])) {
                 case Mechanism::ALL:
                     yield new All($term, $matches['qualifier']);
                     break;
diff --git a/tests/issue49/issue49-tests.yml b/tests/issue49/issue49-tests.yml
new file mode 100644
index 0000000..19843f3
--- /dev/null
+++ b/tests/issue49/issue49-tests.yml
@@ -0,0 +1,16 @@
+description: Issue 49
+tests:
+  include-permerror:
+    description: >-
+      Accept different upper and lower case mechanisms
+    helo: mail.example.net
+    host: 127.0.0.1
+    mailfrom: postmaster@example.com
+    result: pass
+zonedata:
+  example.com:
+    - SPF: 'v=spf1 iP4:127.0.0.1 ~aLL'
+  example.net:
+    - SPF: 'v=spf1 +All'
+  example.org:
+    - SPF: 'v=spf1 +IP4:127.0.0.1 -ALL'