sun.security.x509.PolicyMappingsExtension Maven / Gradle / Ivy
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* accompanied this code).
*
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package sun.security.x509;
import java.io.IOException;
import java.io.OutputStream;
import java.util.*;
import sun.security.util.*;
/**
* Represent the Policy Mappings Extension.
*
* This extension, if present, identifies the certificate policies considered
* identical between the issuing and the subject CA.
* 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
* @see Extension
* @see CertAttrSet
*/
public class PolicyMappingsExtension extends Extension
implements CertAttrSet {
/**
* 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 List maps;
// Encode this extension value
private void encodeThis() throws IOException {
if (maps == null || maps.isEmpty()) {
this.extensionValue = null;
return;
}
DerOutputStream os = new DerOutputStream();
DerOutputStream tmp = new DerOutputStream();
for (CertificatePolicyMap map : maps) {
map.encode(tmp);
}
os.write(DerValue.tag_Sequence, tmp);
this.extensionValue = os.toByteArray();
}
/**
* Create a PolicyMappings with the List of CertificatePolicyMap.
*
* @param maps the List of CertificatePolicyMap.
*/
public PolicyMappingsExtension(List maps)
throws IOException {
this.maps = maps;
this.extensionId = PKIXExtensions.PolicyMappings_Id;
this.critical = true;
encodeThis();
}
/**
* Create a default PolicyMappingsExtension.
*/
public PolicyMappingsExtension() {
extensionId = PKIXExtensions.PolicyMappings_Id;
critical = true;
maps = Collections.emptyList();
}
/**
* 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 PolicyMappingsExtension(Boolean critical, Object value)
throws IOException {
this.extensionId = PKIXExtensions.PolicyMappings_Id;
this.critical = critical.booleanValue();
this.extensionValue = (byte[]) value;
DerValue val = new DerValue(this.extensionValue);
if (val.tag != DerValue.tag_Sequence) {
throw new IOException("Invalid encoding for " +
"PolicyMappingsExtension.");
}
maps = new ArrayList();
while (val.data.available() != 0) {
DerValue seq = val.data.getDerValue();
CertificatePolicyMap map = new CertificatePolicyMap(seq);
maps.add(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 = true;
encodeThis();
}
super.encode(tmp);
out.write(tmp.toByteArray());
}
/**
* Set the attribute value.
*/
@SuppressWarnings("unchecked") // Checked with instanceof
public void set(String name, Object obj) throws IOException {
if (name.equalsIgnoreCase(MAP)) {
if (!(obj instanceof List)) {
throw new IOException("Attribute value should be of" +
" type List.");
}
maps = (List)obj;
} else {
throw new IOException("Attribute name not recognized by " +
"CertAttrSet:PolicyMappingsExtension.");
}
encodeThis();
}
/**
* Get the attribute value.
*/
public List 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.");
}
encodeThis();
}
/**
* Return an enumeration of names of attributes existing within this
* attribute.
*/
public Enumeration getElements () {
AttributeNameEnumeration elements = new AttributeNameEnumeration();
elements.addElement(MAP);
return elements.elements();
}
/**
* Return the name of this attribute.
*/
public String getName () {
return (NAME);
}
}