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// Copyright (c) 2012-2013 The Cryptonote developers
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#pragma once
#define TX_EXTRA_PADDING_MAX_COUNT 255
#define TX_EXTRA_NONCE_MAX_COUNT 255
#define TX_EXTRA_TAG_PADDING 0x00
#define TX_EXTRA_TAG_PUBKEY 0x01
#define TX_EXTRA_NONCE 0x02
#define TX_EXTRA_MERGE_MINING_TAG 0x03
#define TX_EXTRA_NONCE_PAYMENT_ID 0x00
namespace cryptonote
{
struct tx_extra_padding
{
size_t size;
// load
template <template <bool> class Archive>
bool do_serialize(Archive<false>& ar)
{
// size - 1 - because of variant tag
for (size = 1; size <= TX_EXTRA_PADDING_MAX_COUNT; ++size)
{
std::ios_base::iostate state = ar.stream().rdstate();
bool eof = EOF == ar.stream().peek();
ar.stream().clear(state);
if (eof)
break;
uint8_t zero;
if (!::do_serialize(ar, zero))
return false;
if (0 != zero)
return false;
}
return size <= TX_EXTRA_PADDING_MAX_COUNT;
}
// store
template <template <bool> class Archive>
bool do_serialize(Archive<true>& ar)
{
if(TX_EXTRA_PADDING_MAX_COUNT < size)
return false;
// i = 1 - because of variant tag
for (size_t i = 1; i < size; ++i)
{
uint8_t zero = 0;
if (!::do_serialize(ar, zero))
return false;
}
return true;
}
};
struct tx_extra_pub_key
{
crypto::public_key pub_key;
BEGIN_SERIALIZE()
FIELD(pub_key)
END_SERIALIZE()
};
struct tx_extra_nonce
{
std::string nonce;
BEGIN_SERIALIZE()
FIELD(nonce)
if(TX_EXTRA_NONCE_MAX_COUNT < nonce.size()) return false;
END_SERIALIZE()
};
struct tx_extra_merge_mining_tag
{
struct serialize_helper
{
tx_extra_merge_mining_tag& mm_tag;
serialize_helper(tx_extra_merge_mining_tag& mm_tag_) : mm_tag(mm_tag_)
{
}
BEGIN_SERIALIZE()
VARINT_FIELD_N("depth", mm_tag.depth)
FIELD_N("merkle_root", mm_tag.merkle_root)
END_SERIALIZE()
};
size_t depth;
crypto::hash merkle_root;
// load
template <template <bool> class Archive>
bool do_serialize(Archive<false>& ar)
{
std::string field;
if(!::do_serialize(ar, field))
return false;
std::istringstream iss(field);
binary_archive<false> iar(iss);
serialize_helper helper(*this);
return ::serialization::serialize(iar, helper);
}
// store
template <template <bool> class Archive>
bool do_serialize(Archive<true>& ar)
{
std::ostringstream oss;
binary_archive<true> oar(oss);
serialize_helper helper(*this);
if(!::do_serialize(oar, helper))
return false;
std::string field = oss.str();
return ::serialization::serialize(ar, field);
}
};
// tx_extra_field format, except tx_extra_padding and tx_extra_pub_key:
// varint tag;
// varint size;
// varint data[];
//typedef boost::variant<tx_extra_padding, tx_extra_pub_key, tx_extra_nonce> tx_extra_field;
typedef boost::variant<tx_extra_padding, tx_extra_pub_key, tx_extra_nonce, tx_extra_merge_mining_tag> tx_extra_field;
}
VARIANT_TAG(binary_archive, cryptonote::tx_extra_padding, TX_EXTRA_TAG_PADDING);
VARIANT_TAG(binary_archive, cryptonote::tx_extra_pub_key, TX_EXTRA_TAG_PUBKEY);
VARIANT_TAG(binary_archive, cryptonote::tx_extra_nonce, TX_EXTRA_NONCE);
VARIANT_TAG(binary_archive, cryptonote::tx_extra_merge_mining_tag, TX_EXTRA_MERGE_MINING_TAG);
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