* This definition reflects the Network Working Group RFC 4120
* specification available at
*
* http://www.ietf.org/rfc/rfc4120.txt.
*/
public class HostAddresses implements Cloneable {
private static boolean DEBUG = sun.security.krb5.internal.Krb5.DEBUG;
private HostAddress[] addresses = null;
private volatile int hashCode = 0;
public HostAddresses(HostAddress[] new_addresses) throws IOException {
if (new_addresses != null) {
addresses = new HostAddress[new_addresses.length];
for (int i = 0; i < new_addresses.length; i++) {
if (new_addresses[i] == null) {
throw new IOException("Cannot create a HostAddress");
} else {
addresses[i] = (HostAddress)new_addresses[i].clone();
}
}
}
}
public HostAddresses() throws UnknownHostException {
addresses = new HostAddress[1];
addresses[0] = new HostAddress();
}
private HostAddresses(int dummy) {}
public HostAddresses(PrincipalName serverPrincipal)
throws UnknownHostException, KrbException {
String[] components = serverPrincipal.getNameStrings();
if (serverPrincipal.getNameType() != PrincipalName.KRB_NT_SRV_HST ||
components.length < 2)
throw new KrbException(Krb5.KRB_ERR_GENERIC, "Bad name");
String host = components[1];
InetAddress addr[] = InetAddress.getAllByName(host);
HostAddress hAddrs[] = new HostAddress[addr.length];
for (int i = 0; i < addr.length; i++) {
hAddrs[i] = new HostAddress(addr[i]);
}
addresses = hAddrs;
}
public Object clone() {
HostAddresses new_hostAddresses = new HostAddresses(0);
if (addresses != null) {
new_hostAddresses.addresses = new HostAddress[addresses.length];
for (int i = 0; i < addresses.length; i++) {
new_hostAddresses.addresses[i] =
(HostAddress)addresses[i].clone();
}
}
return new_hostAddresses;
}
public boolean inList(HostAddress addr) {
if (addresses != null) {
for (int i = 0; i < addresses.length; i++)
if (addresses[i].equals(addr))
return true;
}
return false;
}
public int hashCode() {
if (hashCode == 0) {
int result = 17;
if (addresses != null) {
for (int i=0; i < addresses.length; i++) {
result = 37*result + addresses[i].hashCode();
}
}
hashCode = result;
}
return hashCode;
}
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (!(obj instanceof HostAddresses)) {
return false;
}
HostAddresses addrs = (HostAddresses)obj;
if ((addresses == null && addrs.addresses != null) ||
(addresses != null && addrs.addresses == null))
return false;
if (addresses != null && addrs.addresses != null) {
if (addresses.length != addrs.addresses.length)
return false;
for (int i = 0; i < addresses.length; i++)
if (!addresses[i].equals(addrs.addresses[i]))
return false;
}
return true;
}
/**
* Constructs a new HostAddresses object.
* @param encoding a single DER-encoded value.
* @exception Asn1Exception if an error occurs while decoding an
* ASN1 encoded data.
* @exception IOException if an I/O error occurs while reading
* encoded data.
*/
public HostAddresses(DerValue encoding)
throws Asn1Exception, IOException {
VectorHostAddresses object.
* @return byte array of encoded HostAddresses object.
* @exception Asn1Exception if an error occurs while decoding an
* ASN1 encoded data.
* @exception IOException if an I/O error occurs while reading
* encoded data.
*/
public byte[] asn1Encode() throws Asn1Exception, IOException {
DerOutputStream bytes = new DerOutputStream();
DerOutputStream temp = new DerOutputStream();
if (addresses != null && addresses.length > 0) {
for (int i = 0; i < addresses.length; i++)
bytes.write(addresses[i].asn1Encode());
}
temp.write(DerValue.tag_Sequence, bytes);
return temp.toByteArray();
}
/**
* Parse (unmarshal) a HostAddresses from a DER input stream.
* This form
* parsing might be used when expanding a value which is part of
* a constructed sequence and uses explicitly tagged type.
*
* @exception Asn1Exception if an Asn1Exception occurs.
* @param data the Der input stream value, which contains one or more
* marshaled value.
* @param explicitTag tag number.
* @param optional indicates if this data field is optional.
* @return an instance of HostAddresses.
*/
public static HostAddresses parse(DerInputStream data,
byte explicitTag, boolean optional)
throws Asn1Exception, IOException {
if ((optional) &&
(((byte)data.peekByte() & (byte)0x1F) != explicitTag))
return null;
DerValue der = data.getDerValue();
if (explicitTag != (der.getTag() & (byte)0x1F)) {
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
} else {
DerValue subDer = der.getData().getDerValue();
return new HostAddresses(subDer);
}
}
/**
* Writes data field values in HostAddresses in FCC
* format to a CCacheOutputStream.
*
* @param cos a CCacheOutputStream to be written to.
* @exception IOException if an I/O exception occurs.
* @see sun.security.krb5.internal.ccache.CCacheOutputStream
*/
public void writeAddrs(CCacheOutputStream cos) throws IOException {
if (addresses == null || addresses.length == 0) {
cos.write32(0);
return;
}
cos.write32(addresses.length);
for (int i = 0; i < addresses.length; i++) {
cos.write16(addresses[i].addrType);
cos.write32(addresses[i].address.length);
cos.write(addresses[i].address, 0,
addresses[i].address.length);
}
}
public InetAddress[] getInetAddresses() {
if (addresses == null || addresses.length == 0)
return null;
ArrayList