// --- 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.util.Enumeration; import java.util.Vector; import netscape.security.util.DerOutputStream; import netscape.security.util.DerValue; /** * This represents the Issuer Alternative Name Extension. * * This extension, if present, allows the issuer to specify multiple * alternative names. * *
* 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
* @version 1.7
* @see Extension
* @see CertAttrSet
*/
public class IssuerAlternativeNameExtension
extends Extension implements CertAttrSet {
/**
*
*/
private static final long serialVersionUID = -269518027483586255L;
/**
* 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.IssuerAlternativeName";
/**
* Attribute names.
*/
public static final String NAME = "IssuerAlternativeName";
public static final String ISSUER_NAME = "issuer_name";
// private data members
GeneralNames names;
// Encode this extension
private void encodeThis() throws IOException {
DerOutputStream os = new DerOutputStream();
try {
names.encode(os);
} catch (GeneralNamesException e) {
throw new IOException(e.toString());
}
this.extensionValue = os.toByteArray();
}
/**
* Create a IssuerAlternativeNameExtension with the passed GeneralNames.
*
* @param critical true if the extension is to be treated as critical.
* @param names the GeneralNames for the issuer.
* @exception IOException on error.
*/
public IssuerAlternativeNameExtension(Boolean critical, GeneralNames names)
throws IOException {
this.names = names;
this.extensionId = PKIXExtensions.IssuerAlternativeName_Id;
this.critical = critical.booleanValue();
encodeThis();
}
/**
* Create a IssuerAlternativeNameExtension with the passed GeneralNames.
*
* @param names the GeneralNames for the issuer.
* @exception IOException on error.
*/
public IssuerAlternativeNameExtension(GeneralNames names)
throws IOException {
this.names = names;
this.extensionId = PKIXExtensions.IssuerAlternativeName_Id;
this.critical = false;
encodeThis();
}
/**
* Create a default IssuerAlternativeNameExtension.
*/
public IssuerAlternativeNameExtension() {
extensionId = PKIXExtensions.IssuerAlternativeName_Id;
critical = false;
names = new GeneralNames();
}
/**
* Create the extension from the passed DER encoded value.
*
* @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 IssuerAlternativeNameExtension(Boolean critical, Object value)
throws IOException {
this.extensionId = PKIXExtensions.IssuerAlternativeName_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);
try {
names = new GeneralNames(val);
} catch (GeneralNamesException e) {
throw new IOException("IssuerAlternativeNameExtension"
+ e.toString());
}
}
/**
* Returns a printable representation of the IssuerAlternativeName.
*/
public String toString() {
if (names == null)
return "";
String s = super.toString() + "IssuerAlternativeName [\n"
+ names.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 OutputStream.
*
* @param out the OutputStream to write the extension to.
* @exception IOException on encoding error.
*/
public void encode(OutputStream out) throws IOException {
DerOutputStream tmp = new DerOutputStream();
if (extensionValue == null) {
extensionId = PKIXExtensions.IssuerAlternativeName_Id;
critical = false;
encodeThis();
}
super.encode(tmp);
out.write(tmp.toByteArray());
}
/**
* Set the attribute value.
*/
public void set(String name, Object obj) throws IOException {
clearValue();
if (name.equalsIgnoreCase(ISSUER_NAME)) {
if (!(obj instanceof GeneralNames)) {
throw new IOException("Attribute value should be of" +
" type GeneralNames.");
}
names = (GeneralNames) obj;
} else {
throw new IOException("Attribute name not recognized by " +
"CertAttrSet:IssuerAlternativeName.");
}
}
/**
* Get the attribute value.
*/
public Object get(String name) throws IOException {
if (name.equalsIgnoreCase(ISSUER_NAME)) {
return (names);
} else {
throw new IOException("Attribute name not recognized by " +
"CertAttrSet:IssuerAlternativeName.");
}
}
/**
* Delete the attribute value.
*/
public void delete(String name) throws IOException {
if (name.equalsIgnoreCase(ISSUER_NAME)) {
names = null;
} else {
throw new IOException("Attribute name not recognized by " +
"CertAttrSet:IssuerAlternativeName.");
}
}
/**
* Return an enumeration of names of attributes existing within this
* attribute.
*/
public Enumeration