8187443: Forest Consolidation: Move files to unified layout

Reviewed-by: darcy, ihse

src/java.base/share/classes/sun/security/x509/SubjectKeyIdentifierExtension.java

@@ -0,0 +1,198 @@
+/*
+ * Copyright (c) 1997, 2011, 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.x509;
+
+import java.io.IOException;
+import java.io.OutputStream;
+import java.util.Enumeration;
+
+import sun.security.util.*;
+
+/**
+ * Represent the Subject Key Identifier Extension.
+ *
+ * This extension, if present, provides a means of identifying the particular
+ * public key used in an application.  This extension by default is marked
+ * non-critical.
+ *
+ * <p>Extensions are addiitonal attributes which can be inserted in a X509
+ * v3 certificate. For example a "Driving License Certificate" could have
+ * the driving license number as a extension.
+ *
+ * <p>Extensions are represented as a sequence of the extension identifier
+ * (Object Identifier), a boolean flag stating whether the extension is to
+ * be treated as being critical and the extension value itself (this is again
+ * a DER encoding of the extension value).
+ *
+ * @author Amit Kapoor
+ * @author Hemma Prafullchandra
+ * @see Extension
+ * @see CertAttrSet
+ */
+public class SubjectKeyIdentifierExtension extends Extension
+implements CertAttrSet<String> {
+    /**
+     * Identifier for this attribute, to be used with the
+     * get, set, delete methods of Certificate, x509 type.
+     */
+    public static final String IDENT =
+                         "x509.info.extensions.SubjectKeyIdentifier";
+    /**
+     * Attribute names.
+     */
+    public static final String NAME = "SubjectKeyIdentifier";
+    public static final String KEY_ID = "key_id";
+
+    // Private data member
+    private KeyIdentifier id = null;
+
+    // Encode this extension value
+    private void encodeThis() throws IOException {
+        if (id == null) {
+            this.extensionValue = null;
+            return;
+        }
+        DerOutputStream os = new DerOutputStream();
+        id.encode(os);
+        this.extensionValue = os.toByteArray();
+    }
+
+    /**
+     * Create a SubjectKeyIdentifierExtension with the passed octet string.
+     * The criticality is set to False.
+     * @param octetString the octet string identifying the key identifier.
+     */
+    public SubjectKeyIdentifierExtension(byte[] octetString)
+    throws IOException {
+        id = new KeyIdentifier(octetString);
+
+        this.extensionId = PKIXExtensions.SubjectKey_Id;
+        this.critical = false;
+        encodeThis();
+    }
+
+    /**
+     * Create the extension from the passed DER encoded value.
+     *
+     * @param critical true if the extension is to be treated as critical.
+     * @param value an array of DER encoded bytes of the actual value.
+     * @exception ClassCastException if value is not an array of bytes
+     * @exception IOException on error.
+     */
+    public SubjectKeyIdentifierExtension(Boolean critical, Object value)
+    throws IOException {
+        this.extensionId = PKIXExtensions.SubjectKey_Id;
+        this.critical = critical.booleanValue();
+        this.extensionValue = (byte[]) value;
+        DerValue val = new DerValue(this.extensionValue);
+        this.id = new KeyIdentifier(val);
+    }
+
+    /**
+     * Returns a printable representation.
+     */
+    public String toString() {
+        return super.toString() +
+            "SubjectKeyIdentifier [\n" + id + "]\n";
+    }
+
+    /**
+     * Write the extension to the OutputStream.
+     *
+     * @param out the OutputStream to write the extension to.
+     * @exception IOException on encoding errors.
+     */
+    public void encode(OutputStream out) throws IOException {
+        DerOutputStream tmp = new DerOutputStream();
+        if (extensionValue == null) {
+            extensionId = PKIXExtensions.SubjectKey_Id;
+            critical = false;
+            encodeThis();
+        }
+        super.encode(tmp);
+        out.write(tmp.toByteArray());
+    }
+
+    /**
+     * Set the attribute value.
+     */
+    public void set(String name, Object obj) throws IOException {
+        if (name.equalsIgnoreCase(KEY_ID)) {
+            if (!(obj instanceof KeyIdentifier)) {
+              throw new IOException("Attribute value should be of" +
+                                    " type KeyIdentifier.");
+            }
+            id = (KeyIdentifier)obj;
+        } else {
+          throw new IOException("Attribute name not recognized by " +
+                "CertAttrSet:SubjectKeyIdentifierExtension.");
+        }
+        encodeThis();
+    }
+
+    /**
+     * Get the attribute value.
+     */
+    public KeyIdentifier get(String name) throws IOException {
+        if (name.equalsIgnoreCase(KEY_ID)) {
+            return (id);
+        } else {
+          throw new IOException("Attribute name not recognized by " +
+                "CertAttrSet:SubjectKeyIdentifierExtension.");
+        }
+    }
+
+    /**
+     * Delete the attribute value.
+     */
+    public void delete(String name) throws IOException {
+        if (name.equalsIgnoreCase(KEY_ID)) {
+            id = null;
+        } else {
+          throw new IOException("Attribute name not recognized by " +
+                "CertAttrSet:SubjectKeyIdentifierExtension.");
+        }
+        encodeThis();
+    }
+
+    /**
+     * Return an enumeration of names of attributes existing within this
+     * attribute.
+     */
+    public Enumeration<String> getElements() {
+        AttributeNameEnumeration elements = new AttributeNameEnumeration();
+        elements.addElement(KEY_ID);
+
+        return (elements.elements());
+    }
+
+    /**
+     * Return the name of this attribute.
+     */
+    public String getName() {
+        return (NAME);
+    }
+}