/**
* This private function is called by ndn_TlvEncoder_writeNestedTlv to write the
* TLVs in the body of a signature's ValidityPeriod.
* @param context This is the ndn_ValidityPeriod struct pointer which was passed
* to writeTlv.
* @param encoder the ndn_TlvEncoder which is calling this.
* @return 0 for success, else an error code.
*/
static ndn_Error
encodeValidityPeriodValue(const void *context, struct ndn_TlvEncoder *encoder)
{
struct ndn_ValidityPeriod *validityPeriod = (struct ndn_ValidityPeriod *)context;
ndn_Error error;
struct ndn_Blob isoStringBlob;
char isoString[23];
// Encode notBefore.
if ((error = ndn_toIsoString(validityPeriod->notBefore, 0, isoString)))
return error;
ndn_Blob_initialize
(&isoStringBlob, (const uint8_t *)isoString, strlen(isoString));
if ((error = ndn_TlvEncoder_writeOptionalBlobTlv
(encoder, ndn_Tlv_ValidityPeriod_NotBefore, &isoStringBlob)))
return error;
// Encode notAfter.
if ((error = ndn_toIsoString(validityPeriod->notAfter, 0, isoString)))
return error;
ndn_Blob_initialize
(&isoStringBlob, (const uint8_t *)isoString, strlen(isoString));
if ((error = ndn_TlvEncoder_writeOptionalBlobTlv
(encoder, ndn_Tlv_ValidityPeriod_NotAfter, &isoStringBlob)))
return error;
return NDN_ERROR_success;
}
/**
* Call writeBlobTlv using the raw string bytes.
* @param type The type of the TLV.
* @param value The raw string.
*/
void
writeRawStringTlv(unsigned int type, const std::string& value)
{
struct ndn_Blob valueBlob;
ndn_Blob_initialize(&valueBlob, (const uint8_t*)&value[0], value.size());
writeBlobTlv(type, &valueBlob);
}
static ndn_Error
ndn_decodeTlvInterestV03
(struct ndn_Interest *interest, size_t *signedPortionBeginOffset,
size_t *signedPortionEndOffset, struct ndn_TlvDecoder *decoder)
{
ndn_Error error;
size_t endOffset;
int canBePrefix, mustBeFresh;
struct ndn_Blob dummyBlob;
if ((error = ndn_TlvDecoder_readNestedTlvsStart
(decoder, ndn_Tlv_Interest, &endOffset)))
return error;
if ((error = ndn_decodeTlvName
(&interest->name, signedPortionBeginOffset, signedPortionEndOffset,
decoder)))
return error;
if ((error = ndn_TlvDecoder_readBooleanTlv
(decoder, ndn_Tlv_CanBePrefix, endOffset, &canBePrefix)))
return error;
ndn_Interest_setCanBePrefix(interest, canBePrefix);
if ((error = ndn_TlvDecoder_readBooleanTlv
(decoder, ndn_Tlv_MustBeFresh, endOffset, &mustBeFresh)))
return error;
ndn_Interest_setMustBeFresh(interest, mustBeFresh);
// Get the encoded sequence of delegations as is.
if ((error = ndn_TlvDecoder_readOptionalBlobTlv
(decoder, ndn_Tlv_ForwardingHint, endOffset,
&interest->forwardingHintWireEncoding)))
return error;
if ((error = ndn_TlvDecoder_readOptionalBlobTlv
(decoder, ndn_Tlv_Nonce, endOffset, &interest->nonce)))
return error;
if ((error = ndn_TlvDecoder_readOptionalNonNegativeIntegerTlvAsDouble
(decoder, ndn_Tlv_InterestLifetime, endOffset, &interest->interestLifetimeMilliseconds)))
return error;
// Clear the unused fields.
interest->minSuffixComponents = -1;
ndn_KeyLocator_initialize
(&interest->keyLocator, interest->keyLocator.keyName.components,
interest->keyLocator.keyName.maxComponents);
interest->exclude.nEntries = 0;
interest->childSelector = -1;
ndn_Blob_initialize(&interest->linkWireEncoding, 0, 0);
interest->selectedDelegationIndex = -1;
// Ignore the HopLimit and Parameters.
if ((error = ndn_TlvDecoder_readOptionalBlobTlv
(decoder, ndn_Tlv_HopLimit, endOffset, &dummyBlob)))
return error;
if ((error = ndn_TlvDecoder_readOptionalBlobTlv
(decoder, ndn_Tlv_Parameters, endOffset, &dummyBlob)))
return error;
if ((error = ndn_TlvDecoder_finishNestedTlvs(decoder, endOffset)))
return error;
return NDN_ERROR_success;
}
static ndn_Error
ndn_decodeTlvInterestV02
(struct ndn_Interest *interest, size_t *signedPortionBeginOffset,
size_t *signedPortionEndOffset, struct ndn_TlvDecoder *decoder)
{
ndn_Error error;
size_t endOffset;
int gotExpectedType;
if ((error = ndn_TlvDecoder_readNestedTlvsStart(decoder, ndn_Tlv_Interest, &endOffset)))
return error;
if ((error = ndn_decodeTlvName
(&interest->name, signedPortionBeginOffset, signedPortionEndOffset,
decoder)))
return error;
if ((error = ndn_TlvDecoder_peekType(decoder, ndn_Tlv_Selectors, endOffset, &gotExpectedType)))
return error;
if (gotExpectedType) {
if ((error = decodeSelectors(interest, decoder)))
return error;
}
else {
// Set selectors to none.
interest->minSuffixComponents = -1;
interest->maxSuffixComponents = -1;
ndn_KeyLocator_initialize
(&interest->keyLocator, interest->keyLocator.keyName.components,
interest->keyLocator.keyName.maxComponents);
interest->exclude.nEntries = 0;
interest->childSelector = -1;
interest->mustBeFresh = 0;
}
// Require a Nonce, but don't force it to be 4 bytes.
if ((error = ndn_TlvDecoder_readBlobTlv(decoder, ndn_Tlv_Nonce, &interest->nonce)))
return error;
if ((error = ndn_TlvDecoder_readOptionalNonNegativeIntegerTlvAsDouble
(decoder, ndn_Tlv_InterestLifetime, endOffset, &interest->interestLifetimeMilliseconds)))
return error;
// Get the encoded sequence of delegations as is.
if ((error = ndn_TlvDecoder_readOptionalBlobTlv
(decoder, ndn_Tlv_ForwardingHint, endOffset,
&interest->forwardingHintWireEncoding)))
return error;
if ((error = ndn_TlvDecoder_peekType(decoder, ndn_Tlv_Data, endOffset, &gotExpectedType)))
return error;
if (gotExpectedType) {
// Get the bytes of the Link TLV.
size_t linkBeginOffset = decoder->offset;
size_t linkEndOffset;
if ((error = ndn_TlvDecoder_readNestedTlvsStart
(decoder, ndn_Tlv_Data, &linkEndOffset)))
return error;
ndn_TlvDecoder_seek(decoder, linkEndOffset);
if ((error = ndn_TlvDecoder_getSlice
(decoder, linkBeginOffset, linkEndOffset, &interest->linkWireEncoding)))
return error;
}
else
ndn_Blob_initialize(&interest->linkWireEncoding, 0, 0);
if ((error = ndn_TlvDecoder_readOptionalNonNegativeIntegerTlv
(decoder, ndn_Tlv_SelectedDelegation, endOffset,
&interest->selectedDelegationIndex)))
return error;
if (interest->selectedDelegationIndex >= 0 && !interest->linkWireEncoding.value)
return NDN_ERROR_Interest_has_a_selected_delegation_but_no_link_object;
if ((error = ndn_TlvDecoder_finishNestedTlvs(decoder, endOffset)))
return error;
return NDN_ERROR_success;
}
BlobLite::BlobLite(const uint8_t* buf, size_t size)
{
ndn_Blob_initialize(this, buf, size);
}
BlobLite::BlobLite()
{
ndn_Blob_initialize(this, 0, 0);
}