bool block_transactions::from_data(uint32_t version, reader& source)
{
reset();
block_hash_ = source.read_hash();
const auto count = source.read_size_little_endian();
// Guard against potential for arbitrary memory allocation.
if (count > max_block_size)
source.invalidate();
else
transactions_.resize(count);
// Order is required.
for (auto& tx: transactions_)
if (!tx.from_data(source, true))
break;
if (version < block_transactions::version_minimum)
source.invalidate();
if (!source)
reset();
return source;
}
bool send_compact::from_data(uint32_t version,
reader& source)
{
reset();
const auto mode = source.read_byte();
if (mode > 1)
source.invalidate();
high_bandwidth_mode_ = (mode == 1);
this->version_ = source.read_8_bytes_little_endian();
if (version < send_compact::version_minimum)
source.invalidate();
if (!source)
reset();
return source;
}
bool header::from_data(uint32_t version, reader& source)
{
if (!chain::header::from_data(source))
return false;
// The header message must trail a zero byte (yes, it's stoopid).
// bitcoin.org/en/developer-reference#headers
if (version != version::level::canonical && source.read_byte() != 0x00)
source.invalidate();
if (!source)
reset();
return source;
}
bool filter_clear::from_data(uint32_t version, reader& source)
{
reset();
// Initialize as valid from deserialization.
insufficient_version_ = false;
if (version < filter_clear::version_minimum)
source.invalidate();
if (!source)
reset();
return source;
}