void
Name::get(NameLite& nameLite) const
{
nameLite.clear();
for (size_t i = 0; i < components_.size(); ++i) {
ndn_Error error;
NameLite::Component component;
components_[i].get(component);
if ((error = nameLite.append(component)))
throw runtime_error(ndn_getErrorString(error));
}
}
// Imitate Name::get(NameLite& nameLite).
static void
toNameLite(PyObject* name, NameLite& nameLite)
{
nameLite.clear();
PyObjectRef components(PyObject_GetAttr(name, str._components));
for (size_t i = 0; i < PyList_GET_SIZE(components.obj); ++i) {
ndn_Error error;
NameLite::Component componentLite;
toNameComponentLite(PyList_GET_ITEM(components.obj, i), componentLite);
if ((error = nameLite.append(componentLite)))
// TODO: Handle the error!
return;
}
}
/**
* Loop to encode a data packet nIterations times using C.
* @param nIterations The number of iterations.
* @param useComplex If true, use a large name, large content and all fields. If false, use a small name, small content
* and only required fields.
* @param useCrypto If true, sign the data packet. If false, use a blank signature.
* @param encoding Output buffer for the wire encoding.
* @param maxEncodingLength The size of the encoding buffer.
* @param encodingLength Return the number of output bytes in encoding.
* @return The number of seconds for all iterations.
*/
static double
benchmarkEncodeDataSecondsC
(int nIterations, bool useComplex, bool useCrypto, uint8_t* encoding, size_t maxEncodingLength, size_t *encodingLength)
{
ndn_Error error;
NameLite::Component finalBlockId((uint8_t*)"\x00", 1);
ndn_NameComponent nameComponents[7];
NameLite name(nameComponents, sizeof(nameComponents) / sizeof(nameComponents[0]));
const size_t complexContentSize = 1115;
char contentString[complexContentSize + 10];
BlobLite content;
if (useComplex) {
// Use a large name and content.
name.append("ndn");
name.append("ucla.edu");
name.append("apps");
name.append("lwndn-test");
name.append("numbers.txt");
name.append("\xFD\x05\x05\xE8\x0C\xCE\x1D");
if ((error = name.append(finalBlockId))) {
cout << "Error in name.append: " << ndn_getErrorString(error) << endl;
return 0;
}
int count = 1;
sprintf(contentString, "%d", count++);
while (strlen(contentString) < complexContentSize)
sprintf(contentString + strlen(contentString), " %d", count++);
content = BlobLite((uint8_t*)contentString, strlen(contentString));
}
else {
// Use a small name and content.
name.append("test");
content = BlobLite((uint8_t*)"abc", 3);
}
ndn_NameComponent certificateNameComponents[5];
NameLite certificateName
(certificateNameComponents, sizeof(certificateNameComponents) / sizeof(certificateNameComponents[0]));
certificateName.append("testname");
certificateName.append("KEY");
certificateName.append("DSK-123");
certificateName.append("ID-CERT");
if ((error = certificateName.append("0"))) {
cout << "Error in certificateName.append: " << ndn_getErrorString(error) << endl;
return 0;
}
uint8_t signatureBitsArray[256];
memset(signatureBitsArray, 0, sizeof(signatureBitsArray));
// Set up the private key now in case useCrypto is true.
// Use a temporary pointer since d2i updates it.
const uint8_t *privateKeyDerPointer = DEFAULT_RSA_PRIVATE_KEY_DER;
RSA *privateKey = d2i_RSAPrivateKey(NULL, &privateKeyDerPointer, sizeof(DEFAULT_RSA_PRIVATE_KEY_DER));
if (!privateKey) {
// Don't expect this to happen.
cout << "Error decoding private key DER" << endl;
return 0;
}
double start = getNowSeconds();
for (int i = 0; i < nIterations; ++i) {
// Since we aren't going to change the names, we can re-use the arrays.
DataLite data
(nameComponents, sizeof(nameComponents) / sizeof(nameComponents[0]),
certificateNameComponents,
sizeof(certificateNameComponents) / sizeof(certificateNameComponents[0]));
if ((error = data.setName(name))) {
cout << "Error in data.setName: " << ndn_getErrorString(error) << endl;
return 0;
}
data.setContent(content);
if (useComplex) {
data.getMetaInfo().setFreshnessPeriod(1000);
data.getMetaInfo().setFinalBlockId(finalBlockId);
}
// Assume the encoding buffer is big enough so we don't need to dynamically reallocate.
DynamicUInt8ArrayLite output(encoding, maxEncodingLength, 0);
size_t signedPortionBeginOffset, signedPortionEndOffset;
data.getSignature().getKeyLocator().setType(ndn_KeyLocatorType_KEYNAME);
if ((error = data.getSignature().getKeyLocator().setKeyName(certificateName))) {
cout << "Error in data.setKeyName: " << ndn_getErrorString(error) << endl;
return 0;
}
if (useCrypto) {
data.getSignature().setType(ndn_SignatureType_Sha256WithRsaSignature);
// Encode once to get the signed portion.
size_t dummyEncodingLength;
if ((error = Tlv0_1_1WireFormatLite::encodeData
(data, &signedPortionBeginOffset, &signedPortionEndOffset,
output, &dummyEncodingLength))) {
cout << "Error in ndn_encodeTlvData: " << ndn_getErrorString(error) << endl;
return 0;
}
// Imitate MemoryPrivateKeyStorage::sign.
uint8_t digest[SHA256_DIGEST_LENGTH];
ndn_digestSha256(encoding + signedPortionBeginOffset, signedPortionEndOffset - signedPortionBeginOffset, digest);
unsigned int signatureBitsLength;
if (!RSA_sign(NID_sha256, digest, sizeof(digest), signatureBitsArray, &signatureBitsLength, privateKey)) {
// Don't expect this to happen.
cout << "Error in RSA_sign" << endl;
return 0;
}
data.getSignature().setSignature(BlobLite(signatureBitsArray, signatureBitsLength));
}
else {
// Set up the signature, but don't sign.
data.getSignature().setSignature(BlobLite(signatureBitsArray, sizeof(signatureBitsArray)));
data.getSignature().setType(ndn_SignatureType_Sha256WithRsaSignature);
}
if ((error = Tlv0_1_1WireFormatLite::encodeData
(data, &signedPortionBeginOffset, &signedPortionEndOffset,
output, encodingLength))) {
cout << "Error in ndn_encodeTlvData: " << ndn_getErrorString(error) << endl;
return 0;
}
}
double finish = getNowSeconds();
if (privateKey)
RSA_free(privateKey);
return finish - start;
}