/**
* Returns a flat name representation for this object. The name format is defined in RFC 2743:
*
* <pre>
* Length Name Description
* 2 TOK_ID Token Identifier
* For exported name objects, this
* must be hex 04 01.
* 2 MECH_OID_LEN Length of the Mechanism OID
* MECH_OID_LEN MECH_OID Mechanism OID, in DER
* 4 NAME_LEN Length of name
* NAME_LEN NAME Exported name; format defined in
* applicable mechanism draft.
* </pre>
*
* Note that it is not required to canonicalize a name before calling export(). i.e., the name
* need not be an MN. If it is not an MN, an implementation defined algorithm can be used for
* choosing the mechanism which should export this name.
*
* @return the flat name representation for this object
* @exception GSSException with major codes NAME_NOT_MN, BAD_NAME, BAD_NAME, FAILURE.
*/
public byte[] export() throws GSSException {
if (mechElement == null) {
/* Use default mech */
mechElement = getElement(ProviderList.DEFAULT_MECH_OID);
}
byte[] mechPortion = mechElement.export();
byte[] oidBytes = null;
ObjectIdentifier oid = null;
try {
oid = new ObjectIdentifier(mechElement.getMechanism().toString());
} catch (IOException e) {
throw new GSSExceptionImpl(GSSException.FAILURE, "Invalid OID String ");
}
DerOutputStream dout = new DerOutputStream();
try {
dout.putOID(oid);
} catch (IOException e) {
throw new GSSExceptionImpl(GSSException.FAILURE, "Could not ASN.1 Encode " + oid.toString());
}
oidBytes = dout.toByteArray();
byte[] retVal = new byte[2 + 2 + oidBytes.length + 4 + mechPortion.length];
int pos = 0;
retVal[pos++] = 0x04;
retVal[pos++] = 0x01;
retVal[pos++] = (byte) (oidBytes.length >>> 8);
retVal[pos++] = (byte) oidBytes.length;
System.arraycopy(oidBytes, 0, retVal, pos, oidBytes.length);
pos += oidBytes.length;
retVal[pos++] = (byte) (mechPortion.length >>> 24);
retVal[pos++] = (byte) (mechPortion.length >>> 16);
retVal[pos++] = (byte) (mechPortion.length >>> 8);
retVal[pos++] = (byte) mechPortion.length;
System.arraycopy(mechPortion, 0, retVal, pos, mechPortion.length);
return retVal;
}
private void importName(GSSManagerImpl gssManager, Object appName) throws GSSException {
int pos = 0;
byte[] bytes = null;
if (appName instanceof String) {
try {
bytes = ((String) appName).getBytes("UTF-8");
} catch (UnsupportedEncodingException e) {
// Won't happen
}
} else bytes = (byte[]) appName;
if ((bytes[pos++] != 0x04) || (bytes[pos++] != 0x01))
throw new GSSExceptionImpl(GSSException.BAD_NAME, "Exported name token id is corrupted!");
int oidLen = (((0xFF & bytes[pos++]) << 8) | (0xFF & bytes[pos++]));
ObjectIdentifier temp = null;
try {
DerInputStream din = new DerInputStream(bytes, pos, oidLen);
temp = new ObjectIdentifier(din);
} catch (IOException e) {
throw new GSSExceptionImpl(
GSSException.BAD_NAME, "Exported name Object identifier is corrupted!");
}
Oid oid = new Oid(temp.toString());
pos += oidLen;
int mechPortionLen =
(((0xFF & bytes[pos++]) << 24)
| ((0xFF & bytes[pos++]) << 16)
| ((0xFF & bytes[pos++]) << 8)
| (0xFF & bytes[pos++]));
byte[] mechPortion = new byte[mechPortionLen];
System.arraycopy(bytes, pos, mechPortion, 0, mechPortionLen);
init(gssManager, mechPortion, NT_EXPORT_NAME, oid);
}