private static void encodeControlParameters(
ControlParameters controlParameters, TlvEncoder encoder)
{
int saveLength = encoder.getLength();
// Encode backwards.
encoder.writeOptionalNonNegativeIntegerTlvFromDouble(
net.named_data.jndn.encoding.tlv.Tlv.ControlParameters_ExpirationPeriod,
controlParameters.getExpirationPeriod());
// Encode strategy
if (controlParameters.getStrategy().size() != 0) {
int strategySaveLength = encoder.getLength();
encodeName(controlParameters.getStrategy(), new int[1], new int[1],
encoder);
encoder.writeTypeAndLength(net.named_data.jndn.encoding.tlv.Tlv.ControlParameters_Strategy,
encoder.getLength() - strategySaveLength);
}
// Encode ForwardingFlags
int flags = controlParameters.getForwardingFlags()
.getNfdForwardingFlags();
if (flags != new ForwardingFlags().getNfdForwardingFlags())
// The flags are not the default value.
encoder.writeNonNegativeIntegerTlv(net.named_data.jndn.encoding.tlv.Tlv.ControlParameters_Flags,
flags);
encoder.writeOptionalNonNegativeIntegerTlv(net.named_data.jndn.encoding.tlv.Tlv.ControlParameters_Cost,
controlParameters.getCost());
encoder.writeOptionalNonNegativeIntegerTlv(
net.named_data.jndn.encoding.tlv.Tlv.ControlParameters_Origin, controlParameters.getOrigin());
encoder.writeOptionalNonNegativeIntegerTlv(
net.named_data.jndn.encoding.tlv.Tlv.ControlParameters_LocalControlFeature,
controlParameters.getLocalControlFeature());
// Encode URI
if (controlParameters.getUri().Length != 0) {
encoder.writeBlobTlv(net.named_data.jndn.encoding.tlv.Tlv.ControlParameters_Uri, new Blob(
controlParameters.getUri()).buf());
}
encoder.writeOptionalNonNegativeIntegerTlv(
net.named_data.jndn.encoding.tlv.Tlv.ControlParameters_FaceId, controlParameters.getFaceId());
// Encode name
if (controlParameters.getName() != null) {
encodeName(controlParameters.getName(), new int[1], new int[1],
encoder);
}
encoder.writeTypeAndLength(net.named_data.jndn.encoding.tlv.Tlv.ControlParameters_ControlParameters,
encoder.getLength() - saveLength);
}
/// <summary>
/// Encode the RepetitiveInterval as NDN-TLV to the encoder.
/// </summary>
///
/// <param name="repetitiveInterval">The RepetitiveInterval to encode.</param>
/// <param name="encoder">The TlvEncoder to receive the encoding.</param>
private static void encodeRepetitiveInterval(
RepetitiveInterval repetitiveInterval, TlvEncoder encoder)
{
int saveLength = encoder.getLength();
// Encode backwards.
encoder.writeNonNegativeIntegerTlv(net.named_data.jndn.encoding.tlv.Tlv.Encrypt_RepeatUnit,
net.named_data.jndn.encrypt.RepetitiveInterval.getRepeatUnitNumericType(repetitiveInterval
.getRepeatUnit()));
encoder.writeNonNegativeIntegerTlv(net.named_data.jndn.encoding.tlv.Tlv.Encrypt_NRepeats,
repetitiveInterval.getNRepeats());
encoder.writeNonNegativeIntegerTlv(net.named_data.jndn.encoding.tlv.Tlv.Encrypt_IntervalEndHour,
repetitiveInterval.getIntervalEndHour());
encoder.writeNonNegativeIntegerTlv(net.named_data.jndn.encoding.tlv.Tlv.Encrypt_IntervalStartHour,
repetitiveInterval.getIntervalStartHour());
// Use Blob to convert the string to UTF8 encoding.
encoder.writeBlobTlv(net.named_data.jndn.encoding.tlv.Tlv.Encrypt_EndDate, new Blob(
toIsoString(repetitiveInterval.getEndDate())).buf());
encoder.writeBlobTlv(net.named_data.jndn.encoding.tlv.Tlv.Encrypt_StartDate, new Blob(
toIsoString(repetitiveInterval.getStartDate())).buf());
encoder.writeTypeAndLength(net.named_data.jndn.encoding.tlv.Tlv.Encrypt_RepetitiveInterval,
encoder.getLength() - saveLength);
}
/// <summary>
/// Encode the EncryptedContent in NDN-TLV and return the encoding.
/// </summary>
///
/// <param name="encryptedContent">The EncryptedContent object to encode.</param>
/// <returns>A Blob containing the encoding.</returns>
public override Blob encodeEncryptedContent(EncryptedContent encryptedContent)
{
TlvEncoder encoder = new TlvEncoder(256);
int saveLength = encoder.getLength();
// Encode backwards.
encoder.writeBlobTlv(net.named_data.jndn.encoding.tlv.Tlv.Encrypt_EncryptedPayload, encryptedContent
.getPayload().buf());
encoder.writeOptionalBlobTlv(net.named_data.jndn.encoding.tlv.Tlv.Encrypt_InitialVector,
encryptedContent.getInitialVector().buf());
// Assume the algorithmType value is the same as the TLV type.
encoder.writeNonNegativeIntegerTlv(net.named_data.jndn.encoding.tlv.Tlv.Encrypt_EncryptionAlgorithm,
encryptedContent.getAlgorithmType().getNumericType());
Tlv0_2WireFormat.encodeKeyLocator(net.named_data.jndn.encoding.tlv.Tlv.KeyLocator,
encryptedContent.getKeyLocator(), encoder);
encoder.writeTypeAndLength(net.named_data.jndn.encoding.tlv.Tlv.Encrypt_EncryptedContent,
encoder.getLength() - saveLength);
return new Blob(encoder.getOutput(), false);
}
/// <summary>
/// Encode delegationSet as a sequence of NDN-TLV Delegation, and return the
/// encoding. Note that the sequence of Delegation does not have an outer TLV
/// type and length because it is intended to use the type and length of a Data
/// packet's Content.
/// </summary>
///
/// <param name="delegationSet">The DelegationSet object to encode.</param>
/// <returns>A Blob containing the encoding.</returns>
public override Blob encodeDelegationSet(DelegationSet delegationSet)
{
TlvEncoder encoder = new TlvEncoder(256);
// Encode backwards.
for (int i = delegationSet.size() - 1; i >= 0; --i) {
int saveLength = encoder.getLength();
encodeName(delegationSet.get(i).getName(), new int[1], new int[1],
encoder);
encoder.writeNonNegativeIntegerTlv(net.named_data.jndn.encoding.tlv.Tlv.Link_Preference,
delegationSet.get(i).getPreference());
encoder.writeTypeAndLength(net.named_data.jndn.encoding.tlv.Tlv.Link_Delegation, encoder.getLength()
- saveLength);
}
return new Blob(encoder.getOutput(), false);
}
/// <summary>
/// Encode controlResponse in NDN-TLV and return the encoding.
/// </summary>
///
/// <param name="controlResponse">The ControlResponse object to encode.</param>
/// <returns>A Blob containing the encoding.</returns>
public override Blob encodeControlResponse(ControlResponse controlResponse)
{
TlvEncoder encoder = new TlvEncoder(256);
int saveLength = encoder.getLength();
// Encode backwards.
// Encode the body.
if (controlResponse.getBodyAsControlParameters() != null)
encodeControlParameters(
controlResponse.getBodyAsControlParameters(), encoder);
encoder.writeBlobTlv(net.named_data.jndn.encoding.tlv.Tlv.NfdCommand_StatusText, new Blob(
controlResponse.getStatusText()).buf());
encoder.writeNonNegativeIntegerTlv(net.named_data.jndn.encoding.tlv.Tlv.NfdCommand_StatusCode,
controlResponse.getStatusCode());
encoder.writeTypeAndLength(net.named_data.jndn.encoding.tlv.Tlv.NfdCommand_ControlResponse,
encoder.getLength() - saveLength);
return new Blob(encoder.getOutput(), false);
}
/// <summary>
/// An internal method to encode signature as the appropriate form of
/// SignatureInfo in NDN-TLV.
/// </summary>
///
/// <param name="signature">An object of a subclass of Signature to encode.</param>
/// <param name="encoder">The TlvEncoder to receive the encoding.</param>
private void encodeSignatureInfo(Signature signature, TlvEncoder encoder)
{
if (signature is GenericSignature) {
// Handle GenericSignature separately since it has the entire encoding.
Blob encoding = ((GenericSignature) signature)
.getSignatureInfoEncoding();
// Do a test decoding to sanity check that it is valid TLV.
try {
TlvDecoder decoder = new TlvDecoder(encoding.buf());
int endOffset = decoder.readNestedTlvsStart(net.named_data.jndn.encoding.tlv.Tlv.SignatureInfo);
decoder.readNonNegativeIntegerTlv(net.named_data.jndn.encoding.tlv.Tlv.SignatureType);
decoder.finishNestedTlvs(endOffset);
} catch (EncodingException ex) {
throw new Exception(
"The GenericSignature encoding is not a valid NDN-TLV SignatureInfo: "
+ ex.Message);
}
encoder.writeBuffer(encoding.buf());
return;
}
int saveLength = encoder.getLength();
// Encode backwards.
if (signature is Sha256WithRsaSignature) {
if (((Sha256WithRsaSignature) signature).getValidityPeriod()
.hasPeriod())
encodeValidityPeriod(
((Sha256WithRsaSignature) signature)
.getValidityPeriod(),
encoder);
encodeKeyLocator(net.named_data.jndn.encoding.tlv.Tlv.KeyLocator,
((Sha256WithRsaSignature) signature).getKeyLocator(),
encoder);
encoder.writeNonNegativeIntegerTlv(net.named_data.jndn.encoding.tlv.Tlv.SignatureType,
net.named_data.jndn.encoding.tlv.Tlv.SignatureType_SignatureSha256WithRsa);
} else if (signature is Sha256WithEcdsaSignature) {
if (((Sha256WithEcdsaSignature) signature).getValidityPeriod()
.hasPeriod())
encodeValidityPeriod(
((Sha256WithEcdsaSignature) signature)
.getValidityPeriod(),
encoder);
encodeKeyLocator(net.named_data.jndn.encoding.tlv.Tlv.KeyLocator,
((Sha256WithEcdsaSignature) signature).getKeyLocator(),
encoder);
encoder.writeNonNegativeIntegerTlv(net.named_data.jndn.encoding.tlv.Tlv.SignatureType,
net.named_data.jndn.encoding.tlv.Tlv.SignatureType_SignatureSha256WithEcdsa);
} else if (signature is HmacWithSha256Signature) {
encodeKeyLocator(net.named_data.jndn.encoding.tlv.Tlv.KeyLocator,
((HmacWithSha256Signature) signature).getKeyLocator(),
encoder);
encoder.writeNonNegativeIntegerTlv(net.named_data.jndn.encoding.tlv.Tlv.SignatureType,
net.named_data.jndn.encoding.tlv.Tlv.SignatureType_SignatureHmacWithSha256);
} else if (signature is DigestSha256Signature)
encoder.writeNonNegativeIntegerTlv(net.named_data.jndn.encoding.tlv.Tlv.SignatureType,
net.named_data.jndn.encoding.tlv.Tlv.SignatureType_DigestSha256);
else
throw new Exception(
"encodeSignatureInfo: Unrecognized Signature object type");
encoder.writeTypeAndLength(net.named_data.jndn.encoding.tlv.Tlv.SignatureInfo, encoder.getLength()
- saveLength);
}
private static void encodeMetaInfo(MetaInfo metaInfo, TlvEncoder encoder)
{
int saveLength = encoder.getLength();
// Encode backwards.
ByteBuffer finalBlockIdBuf = metaInfo.getFinalBlockId().getValue()
.buf();
if (finalBlockIdBuf != null && finalBlockIdBuf.remaining() > 0) {
// FinalBlockId has an inner NameComponent.
int finalBlockIdSaveLength = encoder.getLength();
encodeNameComponent(metaInfo.getFinalBlockId(), encoder);
encoder.writeTypeAndLength(net.named_data.jndn.encoding.tlv.Tlv.FinalBlockId, encoder.getLength()
- finalBlockIdSaveLength);
}
encoder.writeOptionalNonNegativeIntegerTlvFromDouble(
net.named_data.jndn.encoding.tlv.Tlv.FreshnessPeriod, metaInfo.getFreshnessPeriod());
if (!(metaInfo.getType() == net.named_data.jndn.ContentType.BLOB)) {
// Not the default, so we need to encode the type.
if (metaInfo.getType() == net.named_data.jndn.ContentType.LINK
|| metaInfo.getType() == net.named_data.jndn.ContentType.KEY
|| metaInfo.getType() == net.named_data.jndn.ContentType.NACK)
// The ContentType enum is set up with the correct integer for
// each NDN-TLV ContentType.
encoder.writeNonNegativeIntegerTlv(net.named_data.jndn.encoding.tlv.Tlv.ContentType, metaInfo
.getType().getNumericType());
else if (metaInfo.getType() == net.named_data.jndn.ContentType.OTHER_CODE)
encoder.writeNonNegativeIntegerTlv(net.named_data.jndn.encoding.tlv.Tlv.ContentType,
metaInfo.getOtherTypeCode());
else
// We don't expect this to happen.
throw new Exception("unrecognized TLV ContentType");
}
encoder.writeTypeAndLength(net.named_data.jndn.encoding.tlv.Tlv.MetaInfo, encoder.getLength()
- saveLength);
}