From 62438908cbed8b1a0c922e516cf2776bf0e28db6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Trojnara?= <Michal.Trojnara@stunnel.org>
Date: Fri, 30 May 2025 16:57:25 +0200
Subject: [PATCH] Skip the "lib" prefix when guessing engine ID

Fix #436
---
 osslsigncode.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/osslsigncode.c b/osslsigncode.c
index ecfe958..5f7e7a7 100644
--- a/osslsigncode.c
+++ b/osslsigncode.c
@@ -4141,9 +4141,11 @@ static ENGINE *engine_dynamic(GLOBAL_OPTIONS *options)
         ptr = strrchr(options->p11engine, '/');
         if (!ptr) /* no slash -> try backslash */
             ptr = strrchr(options->p11engine, '\\');
-        if (ptr) /* directory separator found */
+        if (ptr) { /* directory separator found */
             ptr++; /* skip it */
-        else /* directory separator not found */
+            if (!strncmp(ptr, "lib", 3))
+                ptr += 3; /* skip the "lib" prefix */
+        } else /* directory separator not found */
             ptr = options->p11engine;
         id = OPENSSL_strdup(ptr);
         ptr = strchr(id, '.');