8229775: Incorrect warning when jar was signed with -sectionsonly

Reviewed-by: mullan

src/jdk.jartool/share/classes/sun/security/tools/jarsigner/Main.java

@@ -685,6 +685,12 @@ public class Main {
             Vector<JarEntry> entriesVec = new Vector<>();
             byte[] buffer = new byte[8192];
 
+            String suffix1 = "-Digest-Manifest";
+            String suffix2 = "-Digest-" + ManifestDigester.MF_MAIN_ATTRS;
+
+            int suffixLength1 = suffix1.length();
+            int suffixLength2 = suffix2.length();
+
             Enumeration<JarEntry> entries = jf.entries();
             while (entries.hasMoreElements()) {
                 JarEntry je = entries.nextElement();
@@ -701,9 +707,14 @@ public class Main {
                                 boolean found = false;
                                 for (Object obj : sf.getMainAttributes().keySet()) {
                                     String key = obj.toString();
-                                    if (key.endsWith("-Digest-Manifest")) {
+                                    if (key.endsWith(suffix1)) {
-                                        digestMap.put(alias,
+                                        digestMap.put(alias, key.substring(
-                                                key.substring(0, key.length() - 16));
+                                                0, key.length() - suffixLength1));
+                                        found = true;
+                                        break;
+                                    } else if (key.endsWith(suffix2)) {
+                                        digestMap.put(alias, key.substring(
+                                                0, key.length() - suffixLength2));
                                         found = true;
                                         break;
                                     }

test/jdk/sun/security/tools/jarsigner/SectionsOnly.java

@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2019, 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.
+ *
+ * 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.
+ */
+
+/*
+ * @test
+ * @bug 8229775
+ * @summary Incorrect warning when jar was signed with -sectionsonly
+ * @library /test/lib
+ */
+
+import jdk.test.lib.SecurityTools;
+import jdk.test.lib.util.JarUtils;
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+
+public class SectionsOnly {
+    public static void main(String[] args) throws Exception {
+        String common = "-storepass changeit -keypass changeit -keystore ks ";
+        SecurityTools.keytool(common
+                + "-keyalg rsa -genkeypair -alias me -dname CN=Me");
+        JarUtils.createJarFile(Path.of("so.jar"), Path.of("."),
+                Files.write(Path.of("so.txt"), new byte[0]));
+        SecurityTools.jarsigner(common + "-sectionsonly so.jar me");
+        SecurityTools.jarsigner(common + "-verify -verbose so.jar")
+                .shouldNotContain("Unparsable signature-related file")
+                .shouldHaveExitValue(0);
+    }
+}