1 files changed, 244 insertions, 0 deletions
diff --git a/pki/base/util/src/netscape/security/x509/CertificateVersion.java b/pki/base/util/src/netscape/security/x509/CertificateVersion.java
new file mode 100644
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+++ b/pki/base/util/src/netscape/security/x509/CertificateVersion.java
@@ -0,0 +1,244 @@
+// --- 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.util.Date;
+import java.util.Enumeration;
+
+import netscape.security.util.*;
+
+/**
+ * This class defines the version of the X509 Certificate.
+ *
+ * @author Amit Kapoor
+ * @author Hemma Prafullchandra
+ * @version 1.8
+ * @see CertAttrSet
+ */
+public class CertificateVersion implements CertAttrSet {
+    /**
+     * X509Certificate Version 1
+     */
+    public static final int 	V1 = 0;
+    /**
+     * X509Certificate Version 2
+     */
+    public static final int 	V2 = 1;
+    /**
+     * X509Certificate Version 3
+     */
+    public static final int 	V3 = 2;
+    /**
+     * Identifier for this attribute, to be used with the
+     * get, set, delete methods of Certificate, x509 type.
+     */  
+    public static final String IDENT = "x509.info.version";
+    /**
+     * Sub attributes name for this CertAttrSet.
+     */
+    public static final String NAME = "version";
+    public static final String VERSION = "number";
+
+    // Private data members
+    int version = V1;
+
+    // Returns the version number.
+    private int getVersion() { 
+        return(version);
+    }
+
+    // Construct the class from the passed DerValue
+    private void construct(DerValue derVal) throws IOException {
+        if (derVal.isConstructed() && derVal.isContextSpecific()) {
+            derVal = derVal.data.getDerValue();
+            version = derVal.getInteger().toInt();
+            if (derVal.data.available() != 0) {
+	        throw new IOException("X.509 version, bad format");
+            }
+        }
+    }
+
+    /**
+     * The default constructor for this class,
+     *  sets the version to 0 (i.e. X.509 version 1).
+     */
+    public CertificateVersion() {
+        version = V1;
+    }
+
+    /**
+     * The constructor for this class for the required version.
+     *
+     * @param version the version for the certificate.
+     * @exception IOException if the version is not valid.
+     */
+    public CertificateVersion(int version) throws IOException {
+
+        // check that it is a valid version
+        if (version == V1 || version == V2 || version == V3)
+            this.version = version;
+        else {
+            throw new IOException("X.509 Certificate version " +
+                                   version + " not supported.\n");
+        }
+    }
+
+    /**
+     * Create the object, decoding the values from the passed DER stream.
+     *
+     * @param in the DerInputStream to read the CertificateVersion from.
+     * @exception IOException on decoding errors.
+     */
+    public CertificateVersion(DerInputStream in) throws IOException {
+        version = V1;
+        DerValue derVal = in.getDerValue();
+
+        construct(derVal);
+    }
+
+    /**
+     * Create the object, decoding the values from the passed stream.
+     *
+     * @param in the InputStream to read the CertificateVersion from.
+     * @exception IOException on decoding errors.
+     */
+    public CertificateVersion(InputStream in) throws IOException {
+        version = V1;
+        DerValue derVal = new DerValue(in);
+
+        construct(derVal);
+    }
+
+    /**
+     * Create the object, decoding the values from the passed DerValue.
+     *
+     * @param val the Der encoded value.
+     * @exception IOException on decoding errors.
+     */
+    public CertificateVersion(DerValue val) throws IOException {
+        version = V1;
+ 
+        construct(val);
+    }
+
+    /**
+     * Return the version number of the certificate.
+     */
+    public String toString() {
+        return("Version: V" + (version+1));
+    }
+
+    /**
+     * Encode the CertificateVersion period in DER form to the stream.
+     *
+     * @param out the OutputStream to marshal the contents to.
+     * @exception IOException on errors.
+     */
+    public void encode(OutputStream out) throws IOException {
+        // Nothing for default
+        if (version == V1) {
+            return;
+        }
+        DerOutputStream tmp = new DerOutputStream();
+        tmp.putInteger(new BigInt(version));
+
+        DerOutputStream seq = new DerOutputStream();
+        seq.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0),
+                  tmp);
+
+        out.write(seq.toByteArray());
+    }
+
+    /**
+     * Decode the CertificateVersion period in DER form from the stream.
+     *
+     * @param in the InputStream to unmarshal the contents from.
+     * @exception IOException on errors.
+     */
+    public void decode(InputStream in) throws IOException {
+        DerValue derVal = new DerValue(in);
+        construct(derVal);
+    } 
+
+    /**
+     * Set the attribute value.
+     */
+    public void set(String name, Object obj) throws IOException {
+        if (!(obj instanceof Integer)) {
+            throw new IOException("Attribute must be of type Integer.");
+        }
+        if (name.equalsIgnoreCase(VERSION)) {
+            version = ((Integer)obj).intValue();
+        } else {
+            throw new IOException("Attribute name not recognized by " +
+                                  "CertAttrSet: CertificateVersion.");
+        }
+    }
+
+    /**
+     * Get the attribute value.
+     */
+    public Object get(String name) throws IOException {
+        if (name.equalsIgnoreCase(VERSION)) {
+            return(Integer.valueOf(getVersion()));
+        } else {
+            throw new IOException("Attribute name not recognized by " +
+                                  "CertAttrSet: CertificateVersion.");
+        }
+    }
+
+    /**
+     * Delete the attribute value.
+     */
+    public void delete(String name) throws IOException {
+        if (name.equalsIgnoreCase(VERSION)) {
+            version = V1;
+        } else {
+            throw new IOException("Attribute name not recognized by " +
+                                  "CertAttrSet: CertificateVersion.");
+        }
+    }
+
+    /**
+     * Return an enumeration of names of attributes existing within this
+     * attribute.
+     */
+    public Enumeration getElements() {
+        AttributeNameEnumeration elements = new AttributeNameEnumeration();
+        elements.addElement(VERSION);
+
+        return (elements.elements());
+    }
+
+    /**
+     * Return the name of this attribute.
+     */
+    public String getName() {
+        return(NAME);
+    }
+
+    /**
+     * Compare versions.
+     */
+    public int compare(int vers) {
+        return(version - vers);
+    }
+}