NetBeans 11.3 regression fixed - allow to install nbms signed by a valid certificate

Author: thurka

visualvm/appui/src/META-INF/services/org.netbeans.spi.autoupdate.KeyStoreProvider

@@ -1 +1,2 @@
 org.graalvm.visualvm.modules.appui.keystore.VisualVMKeyStoreProvider
+org.graalvm.visualvm.modules.appui.keystore.CacertsKeyStoreProvider

visualvm/appui/src/org/graalvm/visualvm/modules/appui/keystore/CacertsKeyStoreProvider.java

@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2020, 2020, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package org.graalvm.visualvm.modules.appui.keystore;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.security.KeyStore;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+import org.netbeans.spi.autoupdate.KeyStoreProvider;
+
+/**
+ * The cacerts keystore with the configured CA certificates.
+ *
+ * @author Tomas Hurka
+ */
+public class CacertsKeyStoreProvider implements KeyStoreProvider {
+
+    private static String getCacerts() {
+        String fs = File.separator;
+        // ${java_home}/lib/security/cacerts
+        return System.getProperty("java.home") + fs
+              + "lib" + fs + "security" + fs + "cacerts";
+    }
+
+    /**
+     * Returns the cacerts keystore with the configured CA certificates.
+     */
+    @Override
+    public KeyStore getKeyStore() {
+        KeyStore keyStore = null;
+        FileInputStream is = null;
+
+        try {
+            File file = new File(getCacerts());
+            if (!file.exists()) {
+                return null;
+            }
+
+            keyStore = KeyStore.getInstance(KeyStore.getDefaultType());
+            is = new FileInputStream(file);
+            keyStore.load(is, null);
+        } catch (Exception ex) {
+            Logger.getLogger("global").log(Level.INFO, ex.getMessage(), ex);
+        } finally {
+            try {
+                if (is != null) is.close();
+            } catch (IOException ex) {
+                assert false : ex;
+            }
+        }
+        return keyStore;
+    }
+
+    @Override
+    public TrustLevel getTrustLevel() {
+        return TrustLevel.VALIDATE_CA;
+    }
+}