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. * *
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 PolicyMappingsExtension extends Extension
implements CertAttrSet {
/**
*
*/
private static final long serialVersionUID = -4023336164621135851L;
/**
* 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.PolicyMappings";
/**
* Attribute names.
*/
public static final String NAME = "PolicyMappings";
public static final String MAP = "map";
// Private data members
private Vector maps = null;
// Encode this extension value
private void encodeThis() throws IOException {
DerOutputStream os = new DerOutputStream();
DerOutputStream tmp = new DerOutputStream();
for (int i = 0; i < maps.size(); i++) {
((CertificatePolicyMap)maps.elementAt(i)).encode(tmp);
}
os.write(DerValue.tag_Sequence,tmp);
extensionValue = os.toByteArray();
}
/**
* Create a PolicyMappings with the Vector of CertificatePolicyMap.
*
* @param maps the Vector of CertificatePolicyMap.
*/
public PolicyMappingsExtension(Vector map) throws IOException {
init(false, map);
}
/**
* Create a PolicyMappings with the Vector of CertificatePolicyMap.
*
* @param maps the Vector of CertificatePolicyMap.
*/
public PolicyMappingsExtension(boolean critical, Vector map)
throws IOException {
init(critical, map);
}
/**
* init policy with criticality and map.
*/
private void init(boolean critical, Vector map) throws IOException {
this.maps = map;
this.extensionId = PKIXExtensions.PolicyMappings_Id;
this.critical = critical;
encodeThis();
}
/**
* Create a default PolicyMappingsExtension.
*/
public PolicyMappingsExtension() {
extensionId = PKIXExtensions.PolicyMappings_Id;
critical = false;
maps = new Vector(1,1);
}
/**
* 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 PolicyMappingsExtension(Boolean critical, Object value)
throws IOException {
this.extensionId = PKIXExtensions.PolicyMappings_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);
if (val.tag != DerValue.tag_Sequence) {
throw new IOException("Invalid encoding for " +
"PolicyMappingsExtension.");
}
maps = new Vector(1, 1);
while (val.data.available() != 0) {
DerValue seq = val.data.getDerValue();
CertificatePolicyMap map = new CertificatePolicyMap(seq);
maps.addElement(map);
}
}
/**
* Returns a printable representation of the policy map.
*/
public String toString() {
if (maps == null) return "";
String s = super.toString() + "PolicyMappings [\n"
+ maps.toString() + "]\n";
return (s);
}
/**
* 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.PolicyMappings_Id;
critical = false;
encodeThis();
}
super.encode(tmp);
out.write(tmp.toByteArray());
}
/**
* 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.");
}
/**
* Set the attribute value.
*/
public void set(String name, Object obj) throws IOException {
clearValue();
if (name.equalsIgnoreCase(MAP)) {
if (!(obj instanceof Vector)) {
throw new IOException("Attribute value should be of" +
" type Vector.");
}
maps = (Vector)obj;
} else {
throw new IOException("Attribute name not recognized by " +
"CertAttrSet:PolicyMappingsExtension.");
}
}
/**
* Get the attribute value.
*/
public Object get(String name) throws IOException {
if (name.equalsIgnoreCase(MAP)) {
return (maps);
} else {
throw new IOException("Attribute name not recognized by " +
"CertAttrSet:PolicyMappingsExtension.");
}
}
/**
* Delete the attribute value.
*/
public void delete(String name) throws IOException {
if (name.equalsIgnoreCase(MAP)) {
maps = null;
} else {
throw new IOException("Attribute name not recognized by " +
"CertAttrSet:PolicyMappingsExtension.");
}
}
/**
* Return an enumeration of names of attributes existing within this
* attribute.
*/
public Enumeration