int main(int argc, char * argv[])
{
if (argc != 2)
usage();
FILE * f = fopen(argv[1], "rb");
if (f == NULL)
usage();
fseek(f, 0, SEEK_END);
size_t length = (size_t)ftell(f);
fseek(f, 0, SEEK_SET);
unsigned char * buffer = malloc(length);
fread(buffer, length, 1, f);
/* Assuming `buffer` contains `length` bytes of input data */
struct cbor_load_result result;
cbor_item_t * item = cbor_load(buffer, length, &result);
if (result.error.code != CBOR_ERR_NONE) {
printf("There was an error while reading the input near byte %zu (read %zu bytes in total): ", result.error.position, result.read);
switch (result.error.code) {
case CBOR_ERR_MALFORMATED:
{
printf("Malformed data\n");
break;
}
case CBOR_ERR_MEMERROR:
{
printf("Memory error -- perhaps the input is too large?\n");
break;
}
case CBOR_ERR_NODATA:
{
printf("The input is empty\n");
break;
}
case CBOR_ERR_NOTENOUGHDATA:
{
printf("Data seem to be missing -- is the input complete?\n");
break;
}
case CBOR_ERR_SYNTAXERROR:
{
printf("Syntactically malformed data -- see http://tools.ietf.org/html/rfc7049\n");
break;
}
case CBOR_ERR_NONE:
{
// GCC's cheap dataflow analysis gag
break;
}
}
exit(1);
}
/* Pretty-print the result */
cbor_describe(item, stdout);
fflush(stdout);
/* Deallocate the result */
cbor_decref(&item);
fclose(f);
}
void DynamicConfigurationServer::handleRequestReceived(const boost::system::error_code& error, size_t bytes_transferred) {
LOG(INFO) << "Request received from " << remote_endpoint_;
LOG(INFO) << "Begin CBOR decoding";
struct cbor_load_result result;
cbor_item_t* item = cbor_load((uint8_t*)recv_buffer_.data(), bytes_transferred, &result);
size_t items = cbor_array_size(item);
assert(items == 2);
cbor_item_t* nonceItem = cbor_array_get(item, 0);
cbor_item_t* ciphertextItem = cbor_array_get(item, 1);
//cbor_describe(item, stdout);
//fflush(stdout);
std::array<uint8_t, 16> nonce;
memcpy(nonce.data(), cbor_bytestring_handle(nonceItem), 16);
std::vector<uint8_t> ciphertext;
ciphertext.resize(cbor_bytestring_length(ciphertextItem));
memcpy(ciphertext.data(), cbor_bytestring_handle(ciphertextItem), ciphertext.size());
std::array<uint8_t, 16> requestKey;
memcpy(requestKey.data(), confRequestKey, 16);
LOG(INFO) << "End CBOR decoding";
LOG(INFO) << "Begin NORX decryption";
std::tuple<bool, std::vector<uint8_t> > plaintext = NORX::decrypt(
std::vector<uint8_t>(),
ciphertext,
std::vector<uint8_t>(),
nonce,
requestKey);
LOG(INFO) << "END NORX decryption";
cbor_decref(&item);
if (std::get<0>(plaintext)) {
LOG(INFO) << "decryption successful";
item = cbor_load((uint8_t*)std::get<1>(plaintext).data(), std::get<1>(plaintext).size(), &result);
//LOG(INFO) << "plaintext: " << byteVecToStr(std::get<1>(plaintext));
if (strncmp("REQ", (const char*)cbor_string_handle(item), 3) == 0) {
LOG(INFO) << "received correct request";
generateCredentialsAndSendResponse(nonce);
}
else {
cbor_describe(item, stdout);
}
fflush(stdout);
/* Deallocate the result */
cbor_decref(&item);
}
else {
LOG(ERROR) << "failed decrypting dynamic initialisation request.";
LOG(ERROR) << "ciphertext: " << byteVecToStr(ciphertext);
LOG(ERROR) << "nonce: " << byteVecToStr(std::vector<uint8_t>(nonce.begin(), nonce.end()));
}
startReceive();
}
