bool RpcServer::on_get_transactions(const COMMAND_RPC_GET_TRANSACTIONS::request& req, COMMAND_RPC_GET_TRANSACTIONS::response& res) {
std::vector<Hash> vh;
for (const auto& tx_hex_str : req.txs_hashes) {
BinaryArray b;
if (!fromHex(tx_hex_str, b))
{
res.status = "Failed to parse hex representation of transaction hash";
return true;
}
if (b.size() != sizeof(Hash))
{
res.status = "Failed, size of data mismatch";
}
vh.push_back(*reinterpret_cast<const Hash*>(b.data()));
}
std::list<Hash> missed_txs;
std::list<Transaction> txs;
m_core.getTransactions(vh, txs, missed_txs);
for (auto& tx : txs) {
res.txs_as_hex.push_back(toHex(toBinaryArray(tx)));
}
for (const auto& miss_tx : missed_txs) {
res.missed_tx.push_back(Common::podToHex(miss_tx));
}
res.status = CORE_RPC_STATUS_OK;
return true;
}
bool LevinProtocol::readCommand(Command& cmd) {
bucket_head2 head = { 0 };
if (!readStrict(reinterpret_cast<uint8_t*>(&head), sizeof(head))) {
return false;
}
if (head.m_signature != LEVIN_SIGNATURE) {
throw std::runtime_error("Levin signature mismatch");
}
if (head.m_cb > LEVIN_DEFAULT_MAX_PACKET_SIZE) {
throw std::runtime_error("Levin packet size is too big");
}
BinaryArray buf;
if (head.m_cb != 0) {
buf.resize(head.m_cb);
if (!readStrict(&buf[0], head.m_cb)) {
return false;
}
}
cmd.command = head.m_command;
cmd.buf = std::move(buf);
cmd.isNotify = !head.m_have_to_return_data;
cmd.isResponse = (head.m_flags & LEVIN_PACKET_RESPONSE) == LEVIN_PACKET_RESPONSE;
return true;
}
bool BaseFunctionalTests::prepareAndSubmitBlock(TestNode& node, CryptoNote::Block&& blockTemplate) {
blockTemplate.timestamp = m_nextTimestamp;
m_nextTimestamp += 2 * m_currency.difficultyTarget();
BinaryArray blockBlob = CryptoNote::toBinaryArray(blockTemplate);
return node.submitBlock(::Common::toHex(blockBlob.data(), blockBlob.size()));
}
bool appendMergeMiningTagToExtra(std::vector<uint8_t>& tx_extra, const TransactionExtraMergeMiningTag& mm_tag) {
BinaryArray blob;
if (!toBinaryArray(mm_tag, blob)) {
return false;
}
tx_extra.push_back(TX_EXTRA_MERGE_MINING_TAG);
std::copy(reinterpret_cast<const uint8_t*>(blob.data()), reinterpret_cast<const uint8_t*>(blob.data() + blob.size()), std::back_inserter(tx_extra));
return true;
}
bool parseAndValidateTransactionFromBinaryArray(const BinaryArray& tx_blob, Transaction& tx, Hash& tx_hash, Hash& tx_prefix_hash) {
if (!fromBinaryArray(tx, tx_blob)) {
return false;
}
//TODO: validate tx
cn_fast_hash(tx_blob.data(), tx_blob.size(), tx_hash);
getObjectHash(*static_cast<TransactionPrefix*>(&tx), tx_prefix_hash);
return true;
}
bool get_block_hashing_blob(const Block& b, BinaryArray& ba) {
if (!toBinaryArray(static_cast<const BlockHeader&>(b), ba)) {
return false;
}
Hash treeRootHash = get_tx_tree_hash(b);
ba.insert(ba.end(), treeRootHash.data, treeRootHash.data + 32);
auto transactionCount = asBinaryArray(Tools::get_varint_data(b.transactionHashes.size() + 1));
ba.insert(ba.end(), transactionCount.begin(), transactionCount.end());
return true;
}
bool append_message_to_extra(std::vector<uint8_t>& tx_extra, const tx_extra_message& message) {
BinaryArray blob;
if (!toBinaryArray(message, blob)) {
return false;
}
tx_extra.reserve(tx_extra.size() + 1 + blob.size());
tx_extra.push_back(TX_EXTRA_MESSAGE_TAG);
std::copy(reinterpret_cast<const uint8_t*>(blob.data()), reinterpret_cast<const uint8_t*>(blob.data() + blob.size()), std::back_inserter(tx_extra));
return true;
}
const Crypto::Hash& CachedBlock::getBlockHash() const {
if (!blockHash.is_initialized()) {
BinaryArray blockBinaryArray = getBlockHashingBinaryArray();
if (BLOCK_MAJOR_VERSION_2 <= block.majorVersion) {
const auto& parentBlock = getParentBlockHashingBinaryArray(false);
blockBinaryArray.insert(blockBinaryArray.end(), parentBlock.begin(), parentBlock.end());
}
blockHash = getObjectHash(blockBinaryArray);
}
return blockHash.get();
}
bool get_block_longhash(cn_context &context, const Block& b, Hash& res) {
BinaryArray bd;
if (b.majorVersion == BLOCK_MAJOR_VERSION_1 || b.majorVersion >= BLOCK_MAJOR_VERSION_4) {
if (!get_block_hashing_blob(b, bd)) {
return false;
}
} else if (b.majorVersion == BLOCK_MAJOR_VERSION_2 || b.majorVersion == BLOCK_MAJOR_VERSION_3) {
if (!get_parent_block_hashing_blob(b, bd)) {
return false;
}
} else {
return false;
}
cn_slow_hash(context, bd.data(), bd.size(), res);
return true;
}
bool addExtraNonceToTransactionExtra(std::vector<uint8_t>& tx_extra, const BinaryArray& extra_nonce) {
if (extra_nonce.size() > TX_EXTRA_NONCE_MAX_COUNT) {
return false;
}
size_t start_pos = tx_extra.size();
tx_extra.resize(tx_extra.size() + 2 + extra_nonce.size());
//write tag
tx_extra[start_pos] = TX_EXTRA_NONCE;
//write len
++start_pos;
tx_extra[start_pos] = static_cast<uint8_t>(extra_nonce.size());
//write data
++start_pos;
memcpy(&tx_extra[start_pos], extra_nonce.data(), extra_nonce.size());
return true;
}
bool get_block_hash(const Block& b, Hash& res) {
BinaryArray ba;
if (!get_block_hashing_blob(b, ba)) {
return false;
}
// The header of block version 1 differs from headers of blocks starting from v.2
if (BLOCK_MAJOR_VERSION_2 == b.majorVersion || BLOCK_MAJOR_VERSION_3 == b.majorVersion) {
BinaryArray parent_blob;
auto serializer = makeParentBlockSerializer(b, true, false);
if (!toBinaryArray(serializer, parent_blob))
return false;
ba.insert(ba.end(), parent_blob.begin(), parent_blob.end());
}
return getObjectHash(ba, res);
}
bool BaseFunctionalTests::prepareAndSubmitBlock(TestNode& node, CryptoNote::Block&& blockTemplate) {
blockTemplate.timestamp = m_nextTimestamp;
m_nextTimestamp += 2 * m_currency.difficultyTarget();
if (blockTemplate.majorVersion >= BLOCK_MAJOR_VERSION_2) {
blockTemplate.parentBlock.majorVersion = BLOCK_MAJOR_VERSION_1;
blockTemplate.parentBlock.minorVersion = BLOCK_MINOR_VERSION_0;
blockTemplate.parentBlock.transactionCount = 1;
CryptoNote::TransactionExtraMergeMiningTag mmTag;
mmTag.depth = 0;
if (!CryptoNote::get_aux_block_header_hash(blockTemplate, mmTag.merkleRoot)) {
return false;
}
blockTemplate.parentBlock.baseTransaction.extra.clear();
if (!CryptoNote::appendMergeMiningTagToExtra(blockTemplate.parentBlock.baseTransaction.extra, mmTag)) {
return false;
}
}
BinaryArray blockBlob = CryptoNote::toBinaryArray(blockTemplate);
return node.submitBlock(::Common::toHex(blockBlob.data(), blockBlob.size()));
}
void LevinProtocol::sendReply(uint32_t command, const BinaryArray& out, int32_t returnCode) {
bucket_head2 head = { 0 };
head.m_signature = LEVIN_SIGNATURE;
head.m_cb = out.size();
head.m_have_to_return_data = false;
head.m_command = command;
head.m_protocol_version = LEVIN_PROTOCOL_VER_1;
head.m_flags = LEVIN_PACKET_RESPONSE;
head.m_return_code = returnCode;
BinaryArray writeBuffer;
writeBuffer.reserve(sizeof(head) + out.size());
Common::VectorOutputStream stream(writeBuffer);
stream.writeSome(&head, sizeof(head));
stream.writeSome(out.data(), out.size());
writeStrict(writeBuffer.data(), writeBuffer.size());
}
void LevinProtocol::sendMessage(uint32_t command, const BinaryArray& out, bool needResponse) {
bucket_head2 head = { 0 };
head.m_signature = LEVIN_SIGNATURE;
head.m_cb = out.size();
head.m_have_to_return_data = needResponse;
head.m_command = command;
head.m_protocol_version = LEVIN_PROTOCOL_VER_1;
head.m_flags = LEVIN_PACKET_REQUEST;
// write header and body in one operation
BinaryArray writeBuffer;
writeBuffer.reserve(sizeof(head) + out.size());
Common::VectorOutputStream stream(writeBuffer);
stream.writeSome(&head, sizeof(head));
stream.writeSome(out.data(), out.size());
writeStrict(writeBuffer.data(), writeBuffer.size());
}
void getBinaryArrayHash(const BinaryArray& binaryArray, Crypto::Hash& hash) {
cn_fast_hash(binaryArray.data(), binaryArray.size(), hash);
}
void TransactionImpl::appendExtra(const BinaryArray& extraData) {
checkIfSigning();
transaction.extra.insert(
transaction.extra.end(), extraData.begin(), extraData.end());
}
bool Currency::constructMinerTx(uint32_t height, size_t medianSize, uint64_t alreadyGeneratedCoins, size_t currentBlockSize,
uint64_t fee, const AccountPublicAddress& minerAddress, Transaction& tx,
const BinaryArray& extraNonce/* = BinaryArray()*/, size_t maxOuts/* = 1*/) const {
tx.inputs.clear();
tx.outputs.clear();
tx.extra.clear();
KeyPair txkey = generateKeyPair();
addTransactionPublicKeyToExtra(tx.extra, txkey.publicKey);
if (!extraNonce.empty()) {
if (!addExtraNonceToTransactionExtra(tx.extra, extraNonce)) {
return false;
}
}
BaseInput in;
in.blockIndex = height;
uint64_t blockReward;
int64_t emissionChange;
if (!getBlockReward(medianSize, currentBlockSize, alreadyGeneratedCoins, fee, height, blockReward, emissionChange)) {
logger(INFO) << "Block is too big";
return false;
}
std::vector<uint64_t> outAmounts;
decompose_amount_into_digits(blockReward, m_defaultDustThreshold,
[&outAmounts](uint64_t a_chunk) { outAmounts.push_back(a_chunk); },
[&outAmounts](uint64_t a_dust) { outAmounts.push_back(a_dust); });
if (!(1 <= maxOuts)) { logger(ERROR, BRIGHT_RED) << "max_out must be non-zero"; return false; }
while (maxOuts < outAmounts.size()) {
outAmounts[outAmounts.size() - 2] += outAmounts.back();
outAmounts.resize(outAmounts.size() - 1);
}
uint64_t summaryAmounts = 0;
for (size_t no = 0; no < outAmounts.size(); no++) {
Crypto::KeyDerivation derivation = boost::value_initialized<Crypto::KeyDerivation>();
Crypto::PublicKey outEphemeralPubKey = boost::value_initialized<Crypto::PublicKey>();
bool r = Crypto::generate_key_derivation(minerAddress.viewPublicKey, txkey.secretKey, derivation);
if (!(r)) {
logger(ERROR, BRIGHT_RED)
<< "while creating outs: failed to generate_key_derivation("
<< minerAddress.viewPublicKey << ", " << txkey.secretKey << ")";
return false;
}
r = Crypto::derive_public_key(derivation, no, minerAddress.spendPublicKey, outEphemeralPubKey);
if (!(r)) {
logger(ERROR, BRIGHT_RED)
<< "while creating outs: failed to derive_public_key("
<< derivation << ", " << no << ", "
<< minerAddress.spendPublicKey << ")";
return false;
}
KeyOutput tk;
tk.key = outEphemeralPubKey;
TransactionOutput out;
summaryAmounts += out.amount = outAmounts[no];
out.target = tk;
tx.outputs.push_back(out);
}
if (!(summaryAmounts == blockReward)) {
logger(ERROR, BRIGHT_RED) << "Failed to construct miner tx, summaryAmounts = " << summaryAmounts << " not equal blockReward = " << blockReward;
return false;
}
tx.version = TRANSACTION_VERSION_1;
//lock
tx.unlockTime = height + m_minedMoneyUnlockWindow;
tx.inputs.push_back(in);
return true;
}
bool gen_block_invalid_binary_format::generate(std::vector<test_event_entry>& events) const
{
BLOCK_VALIDATION_INIT_GENERATE();
std::vector<uint64_t> timestamps;
std::vector<difficulty_type> cummulative_difficulties;
difficulty_type cummulative_diff = 1;
// Unlock blk_0 outputs
Block blk_last = blk_0;
assert(m_currency.minedMoneyUnlockWindow() < m_currency.difficultyWindow());
for (size_t i = 0; i < m_currency.minedMoneyUnlockWindow(); ++i)
{
MAKE_NEXT_BLOCK(events, blk_curr, blk_last, miner_account);
timestamps.push_back(blk_curr.timestamp);
cummulative_difficulties.push_back(++cummulative_diff);
blk_last = blk_curr;
}
// Lifting up takes a while
difficulty_type diffic;
do
{
blk_last = boost::get<Block>(events.back());
diffic = m_currency.nextDifficulty(timestamps, cummulative_difficulties);
if (!lift_up_difficulty(m_currency, events, timestamps, cummulative_difficulties, generator, 1, blk_last,
miner_account, BLOCK_MAJOR_VERSION_1)) {
return false;
}
std::cout << "Block #" << events.size() << ", difficulty: " << diffic << std::endl;
}
while (diffic < 1500);
blk_last = boost::get<Block>(events.back());
MAKE_TX(events, tx_0, miner_account, miner_account, MK_COINS(120), boost::get<Block>(events[1]));
DO_CALLBACK(events, "corrupt_blocks_boundary");
Block blk_test;
std::vector<Crypto::Hash> tx_hashes;
tx_hashes.push_back(getObjectHash(tx_0));
size_t txs_size = getObjectBinarySize(tx_0);
diffic = m_currency.nextDifficulty(timestamps, cummulative_difficulties);
if (!generator.constructBlockManually(blk_test, blk_last, miner_account,
test_generator::bf_major_ver | test_generator::bf_diffic | test_generator::bf_timestamp | test_generator::bf_tx_hashes,
BLOCK_MAJOR_VERSION_1, 0, blk_last.timestamp, Crypto::Hash(), diffic, Transaction(), tx_hashes, txs_size))
return false;
BinaryArray blob = toBinaryArray(blk_test);
for (size_t i = 0; i < blob.size(); ++i)
{
for (size_t bit_idx = 0; bit_idx < sizeof(BinaryArray::value_type) * 8; ++bit_idx)
{
serialized_block sr_block(blob);
BinaryArray::value_type& ch = sr_block.data[i];
ch ^= 1 << bit_idx;
events.push_back(sr_block);
}
}
DO_CALLBACK(events, "check_all_blocks_purged");
return true;
}