/**
* Initializes an APRep 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.
* @exception KrbApErrException if the value read from the DER-encoded data stream does not match
* the pre-defined value.
*/
private void init(DerValue encoding) throws Asn1Exception, KrbApErrException, IOException {
if (((encoding.getTag() & (byte) (0x1F)) != Krb5.KRB_AP_REP)
|| (encoding.isApplication() != true)
|| (encoding.isConstructed() != true)) {
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
}
DerValue der = encoding.getData().getDerValue();
if (der.getTag() != DerValue.tag_Sequence) {
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
}
DerValue subDer = der.getData().getDerValue();
if ((subDer.getTag() & (byte) 0x1F) != (byte) 0x00) {
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
}
pvno = subDer.getData().getBigInteger().intValue();
if (pvno != Krb5.PVNO) {
throw new KrbApErrException(Krb5.KRB_AP_ERR_BADVERSION);
}
subDer = der.getData().getDerValue();
if ((subDer.getTag() & (byte) 0x1F) != (byte) 0x01) {
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
}
msgType = subDer.getData().getBigInteger().intValue();
if (msgType != Krb5.KRB_AP_REP) {
throw new KrbApErrException(Krb5.KRB_AP_ERR_MSG_TYPE);
}
encPart = EncryptedData.parse(der.getData(), (byte) 0x02, false);
if (der.getData().available() > 0) {
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
}
}
/**
* Constructs a LastReqEntry object.
*
* @param encoding a Der-encoded data.
* @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 LastReqEntry(DerValue encoding) throws Asn1Exception, IOException {
if (encoding.getTag() != DerValue.tag_Sequence) {
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
}
DerValue der;
der = encoding.getData().getDerValue();
if ((der.getTag() & 0x1F) == 0x00) {
lrType = der.getData().getBigInteger().intValue();
} else throw new Asn1Exception(Krb5.ASN1_BAD_ID);
lrValue = KerberosTime.parse(encoding.getData(), (byte) 0x01, false);
if (encoding.getData().available() > 0) throw new Asn1Exception(Krb5.ASN1_BAD_ID);
}
/**
* Constructs an instance of Checksum from an ASN.1 encoded representation.
*
* @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.
*/
private Checksum(DerValue encoding) throws Asn1Exception, IOException {
DerValue der;
if (encoding.getTag() != DerValue.tag_Sequence) {
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
}
der = encoding.getData().getDerValue();
if ((der.getTag() & (byte) 0x1F) == (byte) 0x00) {
cksumType = der.getData().getBigInteger().intValue();
} else throw new Asn1Exception(Krb5.ASN1_BAD_ID);
der = encoding.getData().getDerValue();
if ((der.getTag() & (byte) 0x1F) == (byte) 0x01) {
checksum = der.getData().getOctetString();
} else throw new Asn1Exception(Krb5.ASN1_BAD_ID);
if (encoding.getData().available() > 0) {
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
}
}
/**
* Constructs a MethodData object.
*
* @param encoding a Der-encoded data.
* @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 MethodData(DerValue encoding) throws Asn1Exception, IOException {
DerValue der;
if (encoding.getTag() != DerValue.tag_Sequence) {
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
}
der = encoding.getData().getDerValue();
if ((der.getTag() & 0x1F) == 0x00) {
BigInteger bint = der.getData().getBigInteger();
methodType = bint.intValue();
} else throw new Asn1Exception(Krb5.ASN1_BAD_ID);
if (encoding.getData().available() > 0) {
der = encoding.getData().getDerValue();
if ((der.getTag() & 0x1F) == 0x01) {
methodData = der.getData().getOctetString();
} else throw new Asn1Exception(Krb5.ASN1_BAD_ID);
}
if (encoding.getData().available() > 0) throw new Asn1Exception(Krb5.ASN1_BAD_ID);
}
/**
* Parse (unmarshal) a realm 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 on error.
* @param data the Der input stream value, which contains one or more marshaled value.
* @param explicitTag tag number.
* @param optional indicate if this data field is optional
* @return an instance of Realm.
*/
public static Realm parse(DerInputStream data, byte explicitTag, boolean optional)
throws Asn1Exception, IOException, RealmException {
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 Realm(subDer);
}
}
/**
* Returns the ASN.1 encoding of the <xmp> PrincipalName ::= SEQUENCE { name-type [0] Int32,
* name-string [1] SEQUENCE OF KerberosString }
*
* <p>KerberosString ::= GeneralString (IA5String) </xmp>
*
* <p>This definition reflects the Network Working Group RFC 4120 specification available at <a
* href="http://www.ietf.org/rfc/rfc4120.txt">http://www.ietf.org/rfc/rfc4120.txt</a>.
*
* @param encoding a Der-encoded data.
* @param realm the realm for this name
* @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data.
* @exception Asn1Exception if there is an ASN1 encoding error
* @exception IOException if an I/O error occurs
* @exception IllegalArgumentException if encoding is null reading encoded data.
*/
public PrincipalName(DerValue encoding, Realm realm) throws Asn1Exception, IOException {
if (realm == null) {
throw new IllegalArgumentException("Null realm not allowed");
}
nameRealm = realm;
DerValue der;
if (encoding == null) {
throw new IllegalArgumentException("Null encoding not allowed");
}
if (encoding.getTag() != DerValue.tag_Sequence) {
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
}
der = encoding.getData().getDerValue();
if ((der.getTag() & 0x1F) == 0x00) {
BigInteger bint = der.getData().getBigInteger();
nameType = bint.intValue();
} else {
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
}
der = encoding.getData().getDerValue();
if ((der.getTag() & 0x01F) == 0x01) {
DerValue subDer = der.getData().getDerValue();
if (subDer.getTag() != DerValue.tag_SequenceOf) {
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
}
Vector<String> v = new Vector<>();
DerValue subSubDer;
while (subDer.getData().available() > 0) {
subSubDer = subDer.getData().getDerValue();
String namePart = new KerberosString(subSubDer).toString();
v.addElement(namePart);
}
nameStrings = new String[v.size()];
v.copyInto(nameStrings);
validateNameStrings(nameStrings);
} else {
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
}
}
private void init(DerValue encoding) throws Asn1Exception, IOException, RealmException {
DerValue der, subDer;
renewTill = null;
caddr = null;
authorizationData = null;
if (((encoding.getTag() & (byte) 0x1F) != (byte) 0x03)
|| (encoding.isApplication() != true)
|| (encoding.isConstructed() != true)) {
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
}
der = encoding.getData().getDerValue();
if (der.getTag() != DerValue.tag_Sequence) {
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
}
flags = TicketFlags.parse(der.getData(), (byte) 0x00, false);
key = EncryptionKey.parse(der.getData(), (byte) 0x01, false);
Realm crealm = Realm.parse(der.getData(), (byte) 0x02, false);
cname = PrincipalName.parse(der.getData(), (byte) 0x03, false, crealm);
transited = TransitedEncoding.parse(der.getData(), (byte) 0x04, false);
authtime = KerberosTime.parse(der.getData(), (byte) 0x05, false);
starttime = KerberosTime.parse(der.getData(), (byte) 0x06, true);
endtime = KerberosTime.parse(der.getData(), (byte) 0x07, false);
if (der.getData().available() > 0) {
renewTill = KerberosTime.parse(der.getData(), (byte) 0x08, true);
}
if (der.getData().available() > 0) {
caddr = HostAddresses.parse(der.getData(), (byte) 0x09, true);
}
if (der.getData().available() > 0) {
authorizationData = AuthorizationData.parse(der.getData(), (byte) 0x0A, true);
}
if (der.getData().available() > 0) {
throw new Asn1Exception(Krb5.ASN1_BAD_ID);
}
}
/**
* Parse (unmarshal) a <code>PrincipalName</code> 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 on error.
* @param data the Der input stream value, which contains one or more marshaled value.
* @param explicitTag tag number.
* @param optional indicate if this data field is optional
* @param realm the realm for the name
* @return an instance of <code>PrincipalName</code>, or null if the field is optional and
* missing.
*/
public static PrincipalName parse(
DerInputStream data, byte explicitTag, boolean optional, Realm realm)
throws Asn1Exception, IOException, RealmException {
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();
if (realm == null) {
realm = Realm.getDefault();
}
return new PrincipalName(subDer, realm);
}
}
