bool extract(payment_address& address, const script_type& script)
{
// Cast a data_chunk to a short_hash and set the address
auto set_hash_data =
[&address](uint8_t version, const data_chunk& raw_hash)
{
short_hash hash_data;
BITCOIN_ASSERT(raw_hash.size() == hash_data.size());
std::copy(raw_hash.begin(), raw_hash.end(), hash_data.begin());
address.set(version, hash_data);
};
const operation_stack& ops = script.operations();
payment_type pay_type = script.type();
switch (pay_type)
{
case payment_type::pubkey:
BITCOIN_ASSERT(ops.size() == 2);
set_public_key(address, ops[0].data);
return true;
case payment_type::pubkey_hash:
BITCOIN_ASSERT(ops.size() == 5);
set_hash_data(payment_address::pubkey_version, ops[2].data);
return true;
case payment_type::script_hash:
BITCOIN_ASSERT(ops.size() == 3);
set_hash_data(payment_address::script_version, ops[1].data);
return true;
case payment_type::multisig:
// Unimplemented...
return false;
case payment_type::pubkey_hash_sig:
BITCOIN_ASSERT(ops.size() == 2);
set_public_key(address, ops[1].data);
return true;
case payment_type::script_code_sig:
// Should have at least 1 sig and the script code.
BITCOIN_ASSERT(ops.size() > 1);
set_script_hash(address,
bitcoin_short_hash(ops.back().data));
return true;
default:
return false;
}
// Should never happen!
return false;
}
void set_public_key(payment_address& address, const data_chunk& public_key)
{
address.set(payment_address::pubkey_version,
bitcoin_short_hash(public_key));
}
void set_script(payment_address& address, const script_type& eval_script)
{
address.set(payment_address::script_version,
bitcoin_short_hash(save_script(eval_script)));
}
BCW_API uint32_t hd_public_key::fingerprint() const
{
short_hash md = bitcoin_short_hash(K_);
return from_little_endian<uint32_t>(md.begin());
}
