1 files changed, 226 insertions, 0 deletions
diff --git a/base/util/src/netscape/security/x509/CRLNumberExtension.java b/base/util/src/netscape/security/x509/CRLNumberExtension.java
new file mode 100755
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+++ b/base/util/src/netscape/security/x509/CRLNumberExtension.java
@@ -0,0 +1,226 @@
+// --- BEGIN COPYRIGHT BLOCK ---
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; version 2 of the License.
+//
+// This program 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 for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this program; if not, write to the Free Software Foundation, Inc.,
+// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// (C) 2007 Red Hat, Inc.
+// All rights reserved.
+// --- END COPYRIGHT BLOCK ---
+package netscape.security.x509;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.lang.reflect.Array;
+import java.math.BigInteger;
+import java.util.Enumeration;
+import java.util.Vector;
+
+import netscape.security.util.BigInt;
+import netscape.security.util.DerOutputStream;
+import netscape.security.util.DerValue;
+
+/**
+ * Represent the CRL Number Extension.
+ * 
+ * <p>
+ * This extension, if present, conveys a monotonically increasing sequence number for each CRL issued by a given CA
+ * through a specific CA X.500 Directory entry or CRL distribution point. This extension allows users to easily
+ * determine when a particular CRL supersedes another CRL.
+ * 
+ * @author Hemma Prafullchandra
+ * @version 1.2
+ * @see Extension
+ * @see CertAttrSet
+ */
+public class CRLNumberExtension extends Extension
+        implements CertAttrSet {
+
+    /**
+     *
+     */
+    private static final long serialVersionUID = 2992307666566322402L;
+    /**
+     * Attribute name.
+     */
+    public static final String NAME = "CRLNumber";
+    public static final String NUMBER = "value";
+
+    private BigInt crlNumber = null;
+
+    // Encode this extension value
+    private void encodeThis() throws IOException {
+        if (crlNumber == null)
+            throw new IOException("Unintialized CRL number extension");
+        DerOutputStream os = new DerOutputStream();
+        os.putInteger(this.crlNumber);
+        this.extensionValue = os.toByteArray();
+    }
+
+    /**
+     * Create a CRLNumberExtension with the integer value .
+     * The criticality is set to false.
+     * 
+     * @param crlNum the value to be set for the extension.
+     */
+    public CRLNumberExtension(int crlNum) throws IOException {
+        this.crlNumber = new BigInt(crlNum);
+        this.extensionId = PKIXExtensions.CRLNumber_Id;
+        this.critical = false;
+        encodeThis();
+    }
+
+    /**
+     * Create a CRLNumberExtension with the BigInteger value .
+     * The criticality is set to false.
+     * 
+     * @param crlNum the value to be set for the extension.
+     */
+    public CRLNumberExtension(BigInteger crlNum) throws IOException {
+        this.crlNumber = new BigInt(crlNum);
+        this.extensionId = PKIXExtensions.CRLNumber_Id;
+        this.critical = false;
+        encodeThis();
+    }
+
+    /**
+     * Create a CRLNumberExtension with the BigInteger value .
+     * 
+     * @param critical true if the extension is to be treated as critical.
+     * @param crlNum the value to be set for the extension.
+     */
+    public CRLNumberExtension(Boolean critical, BigInteger crlNum) throws IOException {
+        this.crlNumber = new BigInt(crlNum);
+        this.extensionId = PKIXExtensions.CRLNumber_Id;
+        this.critical = critical.booleanValue();
+        encodeThis();
+    }
+
+    /**
+     * Create the extension from the passed DER encoded value of the same.
+     * 
+     * @param critical true if the extension is to be treated as critical.
+     * @param value Array of DER encoded bytes of the actual value.
+     * @exception IOException on error.
+     */
+    public CRLNumberExtension(Boolean critical, Object value)
+            throws IOException {
+        this.extensionId = PKIXExtensions.CRLNumber_Id;
+        this.critical = critical.booleanValue();
+
+        int len = Array.getLength(value);
+        byte[] extValue = new byte[len];
+        for (int i = 0; i < len; i++) {
+            extValue[i] = Array.getByte(value, i);
+        }
+        this.extensionValue = extValue;
+        DerValue val = new DerValue(extValue);
+        this.crlNumber = val.getInteger();
+    }
+
+    /**
+     * Set the attribute value.
+     */
+    public void set(String name, Object obj) throws IOException {
+        if (name.equalsIgnoreCase(NUMBER)) {
+            if (!(obj instanceof BigInteger)) {
+                throw new IOException("Attribute must be of type BigInteger.");
+            }
+            crlNumber = new BigInt((BigInteger) obj);
+        } else {
+            throw new IOException("Attribute name not recognized by"
+                                + " CertAttrSet:CRLNumber.");
+        }
+    }
+
+    /**
+     * Get the attribute value.
+     */
+    public Object get(String name) throws IOException {
+        if (name.equalsIgnoreCase(NUMBER)) {
+            if (crlNumber == null)
+                return null;
+            else
+                return crlNumber.toBigInteger();
+        } else {
+            throw new IOException("Attribute name not recognized by"
+                                + " CertAttrSet:CRLNumber.");
+        }
+    }
+
+    /**
+     * Delete the attribute value.
+     */
+    public void delete(String name) throws IOException {
+        if (name.equalsIgnoreCase(NUMBER)) {
+            crlNumber = null;
+        } else {
+            throw new IOException("Attribute name not recognized by"
+                                + " CertAttrSet:CRLNumber.");
+        }
+    }
+
+    /**
+     * Returns a printable representation of the CRLNumberExtension.
+     */
+    public String toString() {
+        String s = super.toString() + "CRL Number: " +
+                   ((crlNumber == null) ? "" : crlNumber.toString())
+                   + "\n";
+        return (s);
+    }
+
+    /**
+     * Decode the extension from the InputStream.
+     * 
+     * @param in the InputStream to unmarshal the contents from.
+     * @exception IOException on decoding or validity errors.
+     */
+    public void decode(InputStream in) throws IOException {
+        throw new IOException("Method not to be called directly.");
+    }
+
+    /**
+     * Write the extension to the DerOutputStream.
+     * 
+     * @param out the DerOutputStream to write the extension to.
+     * @exception IOException on encoding errors.
+     */
+    public void encode(OutputStream out) throws IOException {
+        DerOutputStream tmp = new DerOutputStream();
+
+        if (this.extensionValue == null) {
+            this.extensionId = PKIXExtensions.CRLNumber_Id;
+            this.critical = false;
+            encodeThis();
+        }
+        super.encode(tmp);
+        out.write(tmp.toByteArray());
+    }
+
+    /**
+     * Return an enumeration of names of attributes existing within this
+     * attribute.
+     */
+    public Enumeration<String> getAttributeNames() {
+        Vector<String> elements = new Vector<String>();
+        elements.addElement(NUMBER);
+        return (elements.elements());
+    }
+
+    /**
+     * Return the name of this attribute.
+     */
+    public String getName() {
+        return (NAME);
+    }
+}