8187443: Forest Consolidation: Move files to unified layout

Reviewed-by: darcy, ihse

src/java.base/share/classes/sun/security/util/AnchorCertificates.java

@@ -0,0 +1,103 @@
+/*
+ * Copyright (c) 2016, 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 sun.security.util;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.security.AccessController;
+import java.security.KeyStore;
+import java.security.PrivilegedAction;
+import java.security.cert.X509Certificate;
+import java.util.Collections;
+import java.util.Enumeration;
+import java.util.HashSet;
+import java.util.Set;
+
+import sun.security.x509.X509CertImpl;
+
+/**
+ * The purpose of this class is to determine the trust anchor certificates is in
+ * the cacerts file.  This is used for PKIX CertPath checking.
+ */
+public class AnchorCertificates {
+
+    private static final Debug debug = Debug.getInstance("certpath");
+    private static final String HASH = "SHA-256";
+    private static Set<String> certs = Collections.emptySet();
+
+    static  {
+        AccessController.doPrivileged(new PrivilegedAction<Void>() {
+            @Override
+            public Void run() {
+                File f = new File(System.getProperty("java.home"),
+                        "lib/security/cacerts");
+                KeyStore cacerts;
+                try {
+                    cacerts = KeyStore.getInstance("JKS");
+                    try (FileInputStream fis = new FileInputStream(f)) {
+                        cacerts.load(fis, null);
+                        certs = new HashSet<>();
+                        Enumeration<String> list = cacerts.aliases();
+                        String alias;
+                        while (list.hasMoreElements()) {
+                            alias = list.nextElement();
+                            // Check if this cert is labeled a trust anchor.
+                            if (alias.contains(" [jdk")) {
+                                X509Certificate cert = (X509Certificate) cacerts
+                                        .getCertificate(alias);
+                                certs.add(X509CertImpl.getFingerprint(HASH, cert));
+                            }
+                        }
+                    }
+                } catch (Exception e) {
+                    if (debug != null) {
+                        debug.println("Error parsing cacerts");
+                    }
+                    e.printStackTrace();
+                }
+                return null;
+            }
+        });
+    }
+
+    /**
+     * Checks if a certificate is a trust anchor.
+     *
+     * @param cert the certificate to check
+     * @return true if the certificate is trusted.
+     */
+    public static boolean contains(X509Certificate cert) {
+        String key = X509CertImpl.getFingerprint(HASH, cert);
+        boolean result = certs.contains(key);
+        if (result && debug != null) {
+            debug.println("AnchorCertificate.contains: matched " +
+                    cert.getSubjectDN());
+        }
+        return result;
+    }
+
+    private AnchorCertificates() {}
+}