From 213b03ea56146ad1568b5d9eab26d337d5d6a551 Mon Sep 17 00:00:00 2001
From: Glavo <zjx001202@gmail.com>
Date: Fri, 16 Jun 2023 08:13:05 +0800
Subject: [PATCH] Print warning message when signature key is missing (#2283)

---
 HMCL/build.gradle.kts | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/HMCL/build.gradle.kts b/HMCL/build.gradle.kts
index ae2a844ae..66e599299 100644
--- a/HMCL/build.gradle.kts
+++ b/HMCL/build.gradle.kts
@@ -56,7 +56,12 @@ fun createChecksum(file: File) {
 }
 
 fun attachSignature(jar: File) {
-    val keyLocation = System.getenv("HMCL_SIGNATURE_KEY") ?: return
+    val keyLocation = System.getenv("HMCL_SIGNATURE_KEY")
+    if (keyLocation == null) {
+        logger.warn("Missing signature key")
+        return
+    }
+
     val privatekey = KeyFactory.getInstance("RSA").generatePrivate(PKCS8EncodedKeySpec(File(keyLocation).readBytes()))
     val signer = Signature.getInstance("SHA512withRSA")
     signer.initSign(privatekey)