bool checkpoint_sync::decode(data_buffer & buffer)
{
auto len = buffer.read_var_int();
if (len > 0)
{
m_message.resize(len);
buffer.read_bytes(
reinterpret_cast<char *>(&m_message[0]), m_message.size()
);
}
len = buffer.read_var_int();
if (len > 0)
{
m_signature.resize(len);
buffer.read_bytes(
reinterpret_cast<char *>(&m_signature[0]), m_signature.size()
);
}
return true;
}
void key_wallet::decode(data_buffer & buffer)
{
/**
* Read the version.
*/
buffer.read_uint32();
/**
* Read the private key length.
*/
auto len = buffer.read_var_int();
if (len > 0)
{
/**
* Read the private key.
*/
m_key_private.reserve(len);
buffer.read_bytes(
reinterpret_cast<char *> (&m_key_private[0]), m_key_private.size()
);
}
/**
* Read the time created.
*/
m_time_created = buffer.read_int64();
/**
* Read the time expires.
*/
m_time_expires = buffer.read_int64();
/**
* Read the comment length.
*/
len = buffer.read_var_int();
if (len > 0)
{
/**
* Read the comment.
*/
m_comment.reserve(len);
buffer.read_bytes(
const_cast<char *> (m_comment.data()), m_comment.size()
);
}
}
bool alert::decode(data_buffer & buffer)
{
auto len = buffer.read_var_int();
if (len > 0)
{
m_message.resize(len);
buffer.read_bytes(
reinterpret_cast<char *>(&m_message[0]), m_message.size()
);
}
len = buffer.read_var_int();
if (len > 0)
{
m_signature.resize(len);
buffer.read_bytes(
reinterpret_cast<char *>(&m_signature[0]), m_signature.size()
);
}
/**
* If we have a message, decode it.
*/
if (m_message.size() > 0)
{
/**
* Allocate the message buffer.
*/
data_buffer buffer_message;
/**
* Write the message into the buffer.
*/
buffer_message.write_bytes(
reinterpret_cast<const char *>(&m_message[0]), m_message.size()
);
/**
* Decode the message.
*/
alert_unsigned::decode(buffer_message);
}
return true;
}
void transaction_out::decode(data_buffer & buffer)
{
/**
* Decode the value.
*/
m_value = buffer.read_int64();
/**
* Read the var_int.
*/
auto len = buffer.read_var_int();
if (len > 0)
{
/**
* Read the script.
*/
auto bytes = buffer.read_bytes(len);
/**
* Insert the script.
*/
m_script_public_key.insert(
m_script_public_key.begin(), bytes.begin(), bytes.end()
);
}
}
bool incentive_vote::decode(data_buffer & buffer)
{
/**
* Read the version.
*/
m_version = buffer.read_uint32();
assert(m_version == current_version);
/**
* Read the block height.
*/
m_block_height = buffer.read_uint32();
/**
* Read the block hash.
*/
m_hash_block = buffer.read_sha256();
/**
* Read the nonce hash.
*/
m_hash_nonce = buffer.read_sha256();
/**
* Read the number of address length.
*/
auto address_len = buffer.read_var_int();
/**
* Allocate the address.
*/
m_address.resize(address_len);
/**
* Read the address.
*/
buffer.read_bytes(const_cast<char *>(m_address.data()), m_address.size());
/**
* Decode the public key.
*/
m_public_key.decode(buffer);
/**
* Check the hash nonce is correct.
*/
if (
m_hash_nonce != (m_hash_block ^ sha256::from_digest(&hash::sha256d(
reinterpret_cast<const std::uint8_t *> (
m_address.data()), m_address.size())[0]) ^ m_public_key.get_hash())
)
{
log_error("Incentive vote decode failed, invalid nonce.");
return false;
}
return verify(buffer);
}
bool merkle_tree_partial::decode(data_buffer & buffer)
{
m_total_transactions = buffer.read_uint32();
auto count = buffer.read_var_int();
for (auto i = 0; i < count; i++)
{
m_hashes.push_back(buffer.read_sha256());
}
std::vector<std::uint8_t> bytes;
auto len = buffer.read_var_int();
if (len > 0)
{
bytes.resize(len);
buffer.read_bytes(reinterpret_cast<char *>(&bytes[0]), len);
}
m_flags.resize(bytes.size() * 8);
for (auto i = 0; i < m_flags.size(); i++)
{
m_flags[i] = (bytes[i / 8] & (1 << (i % 8))) != 0;
}
is_invalid_ = false;
return true;
}
bool hd_configuration::decode(data_buffer & buffer)
{
m_version = buffer.read_uint32();
m_index = buffer.read_uint32();
buffer.read_bytes(
reinterpret_cast<char *> (&m_id_key_master.digest()[0]),
ripemd160::digest_length
);
return true;
}
bool incentive_vote::verify(data_buffer & buffer)
{
auto ret = false;
/**
* Calculate the hash of the nonce hash.
*/
auto digest = hash::sha256d(
m_hash_nonce.digest(), sha256::digest_length
);
/**
* Hash the encoded message buffer.
*/
sha256 hash_value = sha256::from_digest(&digest[0]);
/**
* Read the signature.
*/
auto signature_len = buffer.read_var_int();
if (signature_len > 0)
{
m_signature.resize(signature_len);
buffer.read_bytes(
reinterpret_cast<char *>(&m_signature[0]), m_signature.size()
);
if (
incentive::instance().verify(m_public_key, hash_value,
m_signature) == true
)
{
ret = true;
log_debug(
"Incentive vote verified value (" <<
hash_value.to_string().substr(0, 8) << ")."
);
}
else
{
log_error(
"Incentive vote failed to verify value (" <<
hash_value.to_string().substr(0, 8) << ")."
);
}
}
return ret;
}
bool zerotime_lock::decode(data_buffer & buffer)
{
/**
* Decode the version.
*/
m_version = buffer.read_uint32();
assert(m_version == current_version);
/**
* Decode the transaction.
*/
m_transaction.decode(buffer);
/**
* Decode the transaction hash.
*/
buffer.read_bytes(
reinterpret_cast<char *> (m_hash_tx.digest()), sha256::digest_length
);
assert(m_transaction.get_hash() == m_hash_tx);
/**
* Decode the expiration.
*/
m_expiration = buffer.read_uint64();
/**
* Enforce the expiration.
*/
if (
m_expiration < time::instance().get_adjusted() + interval_min_expire ||
m_expiration > time::instance().get_adjusted() + interval_max_expire
)
{
m_expiration = time::instance().get_adjusted() + interval_min_expire;
}
/**
* No signature is required because:
* 1. The receiver may want to lock a non-zerotime transaction.
* 2. It causes no harm to let other's lock the transaction.
* 3. It conserves bandwidth and processing power.
*/
return m_transaction.get_hash() == m_hash_tx;
}
bool incentive_answer::verify(data_buffer & buffer)
{
auto ret = false;
/**
* Hash the encoded message buffer.
*/
sha256 hash_value = m_public_key.get_hash();
/**
* Read the signature.
*/
auto signature_len = buffer.read_var_int();
if (signature_len > 0)
{
m_signature.resize(signature_len);
buffer.read_bytes(
reinterpret_cast<char *>(&m_signature[0]), m_signature.size()
);
if (
incentive::instance().verify(
m_public_key, hash_value, m_signature) == true
)
{
ret = true;
log_debug(
"Incentive answer verified value (" <<
hash_value.to_string().substr(0, 8) << ")."
);
}
else
{
log_error(
"Incentive answer failed to verify value (" <<
hash_value.to_string().substr(0, 8) << ")."
);
}
}
return ret;
}
bool db_wallet::read_key_value(
wallet & w, data_buffer & buffer_key,
data_buffer & buffer_value, std::int32_t & file_version,
std::vector<sha256> & wallet_upgrade, bool & is_encrypted,
bool & any_unordered, std::string & type, std::string & err
)
{
type.clear();
type.resize(buffer_key.read_var_int());
buffer_key.read_bytes(
const_cast<char *> (type.data()), type.size()
);
if (type == "name")
{
std::string addr;
auto len = buffer_key.read_var_int();
if (len > 0)
{
addr.resize(len);
buffer_key.read_bytes(
const_cast<char *> (addr.data()), addr.size()
);
}
std::string value;
len = buffer_value.read_var_int();
if (len > 0)
{
value.resize(len);
buffer_value.read_bytes(
const_cast<char *> (value.data()), value.size()
);
}
w.address_book()[address(addr).get()] = value;
}
else if (type == "tx")
{
sha256 hash = buffer_key.read_sha256();
auto & wtx = w.transactions()[hash];
wtx.decode(buffer_value);
if (wtx.get_hash() == hash)
{
wtx.bind_wallet(w);
}
else
{
w.transactions().erase(hash);
return false;
}
/**
* Undo serialize changes in 31600.
*/
if (
31404 <= wtx.time_received_is_tx_time() &&
wtx.time_received_is_tx_time() <= 31703
)
{
if (buffer_value.remaining() > 0)
{
char tmp;
char unused;
buffer_value.read_bytes(&tmp, sizeof(tmp));
buffer_value.read_bytes(&unused, sizeof(unused));
wtx.from_account().clear();
wtx.from_account().resize(buffer_value.read_var_int());
buffer_value.read_bytes(
const_cast<char *> (wtx.from_account().data()),
wtx.from_account().size()
);
wtx.set_time_received_is_tx_time(tmp);
}
else
{
wtx.set_time_received_is_tx_time(0);
}
wallet_upgrade.push_back(hash);
}
if (wtx.order_position() == -1)
{
any_unordered = true;
}
}
else if (type == "acentry")
{
std::string acct;
auto len = buffer_key.read_var_int();
if (len > 0)
{
acct.resize(len);
buffer_key.read_bytes(
const_cast<char *> (acct.data()), acct.size()
);
}
std::uint64_t entry_number = buffer_key.read_uint64();
if (entry_number > g_accounting_entry_number)
{
g_accounting_entry_number = entry_number;
}
if (any_unordered == false)
{
accounting_entry entry;
entry.decode(buffer_value);
if (entry.order_position() == -1)
{
any_unordered = true;
}
}
}
else if (type == "key" || type == "wkey")
{
std::vector<std::uint8_t> pub_key;
auto len_public_key = buffer_key.read_var_int();
if (len_public_key > 0)
{
pub_key.resize(len_public_key);
buffer_key.read_bytes(
reinterpret_cast<char *>(&pub_key[0]), pub_key.size()
);
}
key k;
if (type == "key")
{
key::private_t pkey;
auto len_private_key = buffer_value.read_var_int();
if (len_private_key > 0)
{
pkey.resize(len_private_key);
buffer_value.read_bytes(
reinterpret_cast<char *>(&pkey[0]), pkey.size()
);
}
k.set_public_key(pub_key);
if (k.set_private_key(pkey) == false)
{
err = "private key is corrupt";
return false;
}
if (k.get_public_key() != pub_key)
{
err = "public key inconsistency";
return false;
}
if (k.is_valid() == false)
{
err = "invalid private key";
return false;
}
}
else
{
key_wallet wkey;
wkey.decode(buffer_value);
k.set_public_key(pub_key);
if (k.set_private_key(wkey.key_private()) == false)
{
err = "private key is corrupt";
return false;
}
if (k.get_public_key() != pub_key)
{
err = "public key inconsistency";
return false;
}
if (k.is_valid() == false)
{
err = "invalid wallet key";
return false;
}
}
if (w.load_key(k) == false)
{
err = "load key failed";
return false;
}
}
else if (type == "mkey")
{
auto id = buffer_key.read_uint32();
key_wallet_master master_key;
master_key.decode(buffer_value);
if (w.master_keys().count(id) != 0)
{
err = "duplicate master key id " + std::to_string(id);
return false;
}
w.master_keys()[id] = master_key;
if (w.master_key_max_id() < id)
{
w.set_master_key_max_id(id);
}
}
else if (type == "ckey")
{
std::vector<std::uint8_t> pub_key;
auto len = buffer_key.read_var_int();
if (len > 0)
{
pub_key.resize(len);
buffer_key.read_bytes(
reinterpret_cast<char *> (&pub_key[0]), pub_key.size()
);
}
std::vector<std::uint8_t> pri_key;
len = buffer_value.read_var_int();
if (len > 0)
{
pri_key.resize(len);
buffer_value.read_bytes(
reinterpret_cast<char *> (&pri_key[0]), pri_key.size()
);
}
if (w.load_crypted_key(pub_key, pri_key) == false)
{
err = "load crypted key failed";
return false;
}
is_encrypted = true;
}
else if (type == "defaultkey")
{
/**
* Allocate the default public key.
*/
key_public key_public_default;
/**
* Decode the default public key.
*/
if (key_public_default.decode(buffer_value))
{
/**
* Set the default public key.
*/
w.set_key_public_default(key_public_default);
}
}
else if (type == "pool")
{
auto index = buffer_key.read_int64();
w.get_key_pool().insert(index);
}
else if (type == "version")
{
file_version = buffer_value.read_uint32();
if (file_version == 10300)
{
file_version = 300;
}
}
else if (type == "cscript")
{
auto digest = buffer_key.read_bytes(ripemd160::digest_length);
auto len = buffer_value.read_var_int();
if (len > 0)
{
script s(len);
buffer_value.read_bytes(reinterpret_cast<char *> (&s[0]), s.size());
if (w.load_c_script(s) == false)
{
err = "load c script failed";
return false;
}
}
}
else if (type == "orderposnext")
{
std::int64_t order_position_next = buffer_value.read_int64();
w.set_order_position_next(order_position_next);
}
return true;
}
bool incentive_collaterals::decode(data_buffer & buffer)
{
/**
* Decode the version.
*/
m_version = buffer.read_uint32();
assert(m_version == current_version);
/**
* Read the number of collateral entries.
*/
auto count = buffer.read_var_int();
/**
* Read each collateral entry.
*/
for (auto i = 0; i < count; i++)
{
address_manager::recent_endpoint_t collateral;
/**
* Read the address.
*/
collateral.addr = buffer.read_network_address(false, true);
auto len = buffer.read_var_int();
collateral.wallet_address.resize(len);
/**
* Read the wallet address.
*/
buffer.read_bytes(
const_cast<char *> (collateral.wallet_address.data()),
collateral.wallet_address.size()
);
/**
* Read the public key.
*/
collateral.public_key.decode(buffer);
/**
* Read the transaction_in.
*/
collateral.tx_in.decode(buffer);
/**
* Read the time.
*/
collateral.time = buffer.read_uint64();
/**
* Read the protocol version.
*/
collateral.protocol_version = buffer.read_uint32();
/**
* Read the protocol version user agent length.
*/
len = buffer.read_var_int();
collateral.protocol_version_user_agent.resize(len);
/**
* Read the protocol version user agent.
*/
buffer.read_bytes(
const_cast<char *> (collateral.protocol_version_user_agent.data()),
collateral.protocol_version_user_agent.size()
);
/**
* Read the protocol version services.
*/
collateral.protocol_version_services = buffer.read_uint64();
/**
* Read the protocol version start height.
*/
collateral.protocol_version_start_height = buffer.read_int32();
m_collaterals.insert(collateral);
}
return true;
}
void transaction_wallet::decode(data_buffer & buffer)
{
/**
* Initialize
*/
initialize(0);
auto is_spent = false;
/**
* Decode the base class.
*/
transaction_merkle::decode(buffer);
auto len = buffer.read_var_int();
for (auto i = 0; i < len; i++)
{
transaction_merkle tx_merkle;
tx_merkle.decode(buffer);
m_previous_transactions.push_back(tx_merkle);
}
auto len_values = buffer.read_var_int();
for (auto i = 0; i < len_values; i++)
{
std::string first(buffer.read_var_int(), 0);
buffer.read_bytes(const_cast<char *> (first.data()), first.size());
std::string second(buffer.read_var_int(), 0);
buffer.read_bytes(const_cast<char *> (second.data()), second.size());
m_values[first] = second;
}
m_order_form.resize(buffer.read_var_int());
for (auto i = 0; i < m_order_form.size(); i++)
{
std::string first(buffer.read_var_int(), 0);
buffer.read_bytes(const_cast<char *> (first.data()), first.size());
std::string second(buffer.read_var_int(), 0);
buffer.read_bytes(const_cast<char *> (second.data()), second.size());
m_order_form[i] = std::make_pair(first, second);
}
m_time_received_is_tx_time = buffer.read_uint32();
m_time_received = buffer.read_uint32();
m_is_from_me = buffer.read_uint8();
is_spent = buffer.read_uint8();
m_from_account = m_values["fromaccount"];
if (m_values.count("spent") > 0)
{
for (auto & i : m_values["spent"])
{
m_spent.push_back(i != '0');
}
}
else
{
m_spent.assign(transaction_out().size(), is_spent);
}
/**
* If we are an (SPV) client set the block height from the value.
*/
if (globals::instance().is_client_spv() == true)
{
if (m_values.count("spv_block_height") > 0)
{
auto block_height = std::stoi(m_values["spv_block_height"]);
set_spv_block_height(block_height);
}
}
/**
* Read the order position.
*/
wallet::read_order_position(m_order_position, m_values);
m_time_smart =
m_values.count("timesmart") ?
boost::lexical_cast<std::uint32_t> (m_values["timesmart"]) : 0
;
m_values.erase("version");
m_values.erase("spent");
m_values.erase("n");
m_values.erase("timesmart");
}