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/*
* Copyright (c) 2001, 2023, 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
* @library /test/lib
* @modules java.base/sun.security.x509
* @modules java.base/sun.security.tools.keytool
* @bug 4419266 4842702
* @summary Make sure verifying signed Jar doesn't throw SecurityException
*/
import jdk.security.jarsigner.JarSigner;
import sun.security.tools.keytool.CertAndKeyGen;
import sun.security.x509.X500Name;
import java.io.OutputStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.security.KeyStore;
import java.security.cert.Certificate;
import java.security.cert.X509Certificate;
import java.util.Collections;
import java.util.Objects;
import java.util.concurrent.TimeUnit;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
import java.util.jar.JarOutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import static jdk.test.lib.Utils.runAndCheckException;
public class VerifySignedJar {
public static void main(String[] args) throws Exception {
Path j = createJar();
Path s = signJar(j, keyEntry("cn=duke"));
try (JarFile jf = new JarFile(s.toFile())) {
for (JarEntry e: Collections.list(jf.entries())) {
// Reading entry to trigger verification
jf.getInputStream(e).transferTo(OutputStream.nullOutputStream());
// Check that all regular files are signed by duke
if (!e.getName().startsWith("META-INF/")) {
checkSignedBy(e, "cn=duke");
}
}
// Read ZIP and JAR entries by name
Objects.requireNonNull(jf.getEntry("getprop.class"));
Objects.requireNonNull(jf.getJarEntry("getprop.class"));
// Make sure we throw NPE on null parameters
runAndCheckException(() -> jf.getEntry(null), NullPointerException.class);
runAndCheckException(() -> jf.getJarEntry(null), NullPointerException.class);
runAndCheckException(() -> jf.getInputStream(null), NullPointerException.class);
} catch (SecurityException se) {
throw new Exception("Got SecurityException when verifying signed " +
"jar:" + se);
}
}
// Check that a JAR entry is signed by an expected DN
private static void checkSignedBy(JarEntry e, String expectedDn) throws Exception {
Certificate[] certs = e.getCertificates();
if (certs == null || certs.length == 0) {
throw new Exception("JarEntry has no certificates: " + e.getName());
}
if (certs[0] instanceof X509Certificate x) {
String name = x.getSubjectX500Principal().getName();
if (!name.equalsIgnoreCase(expectedDn)) {
throw new Exception("Expected entry signed by %s, was %s".formatted(name, expectedDn));
}
} else {
throw new Exception("Expected JarEntry.getCertificate to return X509Certificate");
}
}
private static Path createJar() throws Exception {
Path j = Path.of("unsigned.jar");
try (JarOutputStream out = new JarOutputStream(Files.newOutputStream(j))){
out.putNextEntry(new JarEntry("getprop.class"));
out.write(new byte[] {(byte) 0XCA, (byte) 0XFE, (byte) 0XBA, (byte) 0XBE});
}
return j;
}
private static Path signJar(Path j, KeyStore.PrivateKeyEntry entry) throws Exception {
Path s = Path.of("signed.jar");
JarSigner signer = new JarSigner.Builder(entry)
.signerName("zigbert")
.digestAlgorithm("SHA-256")
.signatureAlgorithm("SHA256withRSA")
.build();
try (ZipFile zip = new ZipFile(j.toFile());
OutputStream out = Files.newOutputStream(s)) {
signer.sign(zip, out);
}
return s;
}
private static KeyStore.PrivateKeyEntry keyEntry(String dname) throws Exception {
CertAndKeyGen gen = new CertAndKeyGen("RSA", "SHA256withRSA");
gen.generate(1048); // Small key size makes test run faster
var oneDay = TimeUnit.DAYS.toSeconds(1);
Certificate cert = gen.getSelfCertificate(new X500Name(dname), oneDay);
return new KeyStore.PrivateKeyEntry(gen.getPrivateKey(),
new Certificate[] {cert});
}
}
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