bool verify_checksum(data_slice data)
{
if (data.size() < checksum_size)
return false;
data_slice body(data.begin(), data.end() - checksum_size);
auto checksum = from_little_endian_unsafe<uint32_t>(data.end() - checksum_size);
return bitcoin_checksum(body) == checksum;
}
data_chunk create_raw_message(const Message& packet)
{
data_chunk payload(satoshi_raw_size(packet));
satoshi_save(packet, payload.begin());
// Make the header packet and serialise it
header_type head;
head.magic = magic_value();
head.command = satoshi_command(packet);
head.payload_length = static_cast<uint32_t>(payload.size());
head.checksum = bitcoin_checksum(payload);
data_chunk raw_header(satoshi_raw_size(head));
satoshi_save(head, raw_header.begin());
// Construct completed packet with header + payload
data_chunk whole_message = raw_header;
extend_data(whole_message, payload);
// Probably not the right place for this
// Networking output in an exporter
log_debug(LOG_NETWORK) << "s: " << head.command
<< " (" << payload.size() << " bytes)";
return whole_message;
}
void append_checksum(data_chunk& data)
{
const auto checksum = bitcoin_checksum(data);
extend_data(data, to_little_endian(checksum));
}
BC_API bool verify_checksum(const data_chunk& data)
{
data_chunk body(data.begin(), data.end() - 4);
auto checksum = from_little_endian<uint32_t>(data.end() - 4);
return bitcoin_checksum(body) == checksum;
}
BC_API void append_checksum(data_chunk& data)
{
uint32_t checksum = bitcoin_checksum(data);
extend_data(data, to_little_endian(checksum));
}
