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wownero/src/wallet/api/unsigned_transaction.cpp
mj-xmr da9aa1f7f8
Copyright: Update to 2022
2022-03-04 06:59:20 +01:00

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// Copyright (c) 2014-2022, The Monero Project
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
// conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
// of conditions and the following disclaimer in the documentation and/or other
// materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its contributors may be
// used to endorse or promote products derived from this software without specific
// prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
#include "unsigned_transaction.h"
#include "wallet.h"
#include "common_defines.h"
#include "cryptonote_basic/cryptonote_format_utils.h"
#include "cryptonote_basic/cryptonote_basic_impl.h"
#include <memory>
#include <vector>
#include <sstream>
#include <boost/format.hpp>
using namespace std;
namespace Monero {
UnsignedTransaction::~UnsignedTransaction() {}
UnsignedTransactionImpl::UnsignedTransactionImpl(WalletImpl &wallet)
: m_wallet(wallet)
{
m_status = Status_Ok;
}
UnsignedTransactionImpl::~UnsignedTransactionImpl()
{
LOG_PRINT_L3("Unsigned tx deleted");
}
int UnsignedTransactionImpl::status() const
{
return m_status;
}
string UnsignedTransactionImpl::errorString() const
{
return m_errorString;
}
bool UnsignedTransactionImpl::sign(const std::string &signedFileName)
{
if(m_wallet.watchOnly())
{
m_errorString = tr("This is a watch only wallet");
m_status = Status_Error;
return false;
}
std::vector<tools::wallet2::pending_tx> ptx;
try
{
bool r = m_wallet.m_wallet->sign_tx(m_unsigned_tx_set, signedFileName, ptx);
if (!r)
{
m_errorString = tr("Failed to sign transaction");
m_status = Status_Error;
return false;
}
}
catch (const std::exception &e)
{
m_errorString = string(tr("Failed to sign transaction")) + e.what();
m_status = Status_Error;
return false;
}
return true;
}
//----------------------------------------------------------------------------------------------------
bool UnsignedTransactionImpl::checkLoadedTx(const std::function<size_t()> get_num_txes, const std::function<const tools::wallet2::tx_construction_data&(size_t)> &get_tx, const std::string &extra_message)
{
// gather info to ask the user
uint64_t amount = 0, amount_to_dests = 0, change = 0;
size_t min_ring_size = ~0;
std::unordered_map<cryptonote::account_public_address, std::pair<std::string, uint64_t>> dests;
int first_known_non_zero_change_index = -1;
std::string payment_id_string = "";
for (size_t n = 0; n < get_num_txes(); ++n)
{
const tools::wallet2::tx_construction_data &cd = get_tx(n);
std::vector<cryptonote::tx_extra_field> tx_extra_fields;
bool has_encrypted_payment_id = false;
crypto::hash8 payment_id8 = crypto::null_hash8;
if (cryptonote::parse_tx_extra(cd.extra, tx_extra_fields))
{
cryptonote::tx_extra_nonce extra_nonce;
if (find_tx_extra_field_by_type(tx_extra_fields, extra_nonce))
{
crypto::hash payment_id;
if(cryptonote::get_encrypted_payment_id_from_tx_extra_nonce(extra_nonce.nonce, payment_id8))
{
if (!payment_id_string.empty())
payment_id_string += ", ";
payment_id_string = std::string("encrypted payment ID ") + epee::string_tools::pod_to_hex(payment_id8);
has_encrypted_payment_id = true;
}
else if (cryptonote::get_payment_id_from_tx_extra_nonce(extra_nonce.nonce, payment_id))
{
if (!payment_id_string.empty())
payment_id_string += ", ";
payment_id_string = std::string("unencrypted payment ID ") + epee::string_tools::pod_to_hex(payment_id);
}
}
}
for (size_t s = 0; s < cd.sources.size(); ++s)
{
amount += cd.sources[s].amount;
size_t ring_size = cd.sources[s].outputs.size();
if (ring_size < min_ring_size)
min_ring_size = ring_size;
}
for (size_t d = 0; d < cd.splitted_dsts.size(); ++d)
{
const cryptonote::tx_destination_entry &entry = cd.splitted_dsts[d];
std::string address, standard_address = get_account_address_as_str(m_wallet.m_wallet->nettype(), entry.is_subaddress, entry.addr);
if (has_encrypted_payment_id && !entry.is_subaddress)
{
address = get_account_integrated_address_as_str(m_wallet.m_wallet->nettype(), entry.addr, payment_id8);
address += std::string(" (" + standard_address + " with encrypted payment id " + epee::string_tools::pod_to_hex(payment_id8) + ")");
}
else
address = standard_address;
auto i = dests.find(entry.addr);
if (i == dests.end())
dests.insert(std::make_pair(entry.addr, std::make_pair(address, entry.amount)));
else
i->second.second += entry.amount;
amount_to_dests += entry.amount;
}
if (cd.change_dts.amount > 0)
{
auto it = dests.find(cd.change_dts.addr);
if (it == dests.end())
{
m_status = Status_Error;
m_errorString = tr("Claimed change does not go to a paid address");
return false;
}
if (it->second.second < cd.change_dts.amount)
{
m_status = Status_Error;
m_errorString = tr("Claimed change is larger than payment to the change address");
return false;
}
if (cd.change_dts.amount > 0)
{
if (first_known_non_zero_change_index == -1)
first_known_non_zero_change_index = n;
if (memcmp(&cd.change_dts.addr, &get_tx(first_known_non_zero_change_index).change_dts.addr, sizeof(cd.change_dts.addr)))
{
m_status = Status_Error;
m_errorString = tr("Change goes to more than one address");
return false;
}
}
change += cd.change_dts.amount;
it->second.second -= cd.change_dts.amount;
if (it->second.second == 0)
dests.erase(cd.change_dts.addr);
}
}
std::string dest_string;
for (auto i = dests.begin(); i != dests.end(); )
{
dest_string += (boost::format(tr("sending %s to %s")) % cryptonote::print_money(i->second.second) % i->second.first).str();
++i;
if (i != dests.end())
dest_string += ", ";
}
if (dest_string.empty())
dest_string = tr("with no destinations");
std::string change_string;
if (change > 0)
{
std::string address = get_account_address_as_str(m_wallet.m_wallet->nettype(), get_tx(0).subaddr_account > 0, get_tx(0).change_dts.addr);
change_string += (boost::format(tr("%s change to %s")) % cryptonote::print_money(change) % address).str();
}
else
change_string += tr("no change");
uint64_t fee = amount - amount_to_dests;
m_confirmationMessage = (boost::format(tr("Loaded %lu transactions, for %s, fee %s, %s, %s, with min ring size %lu. %s")) % (unsigned long)get_num_txes() % cryptonote::print_money(amount) % cryptonote::print_money(fee) % dest_string % change_string % (unsigned long)min_ring_size % extra_message).str();
return true;
}
std::vector<uint64_t> UnsignedTransactionImpl::amount() const
{
std::vector<uint64_t> result;
for (const auto &utx : m_unsigned_tx_set.txes) {
for (const auto &unsigned_dest : utx.dests) {
result.push_back(unsigned_dest.amount);
}
}
return result;
}
std::vector<uint64_t> UnsignedTransactionImpl::fee() const
{
std::vector<uint64_t> result;
for (const auto &utx : m_unsigned_tx_set.txes) {
uint64_t fee = 0;
for (const auto &i: utx.sources) fee += i.amount;
for (const auto &i: utx.splitted_dsts) fee -= i.amount;
result.push_back(fee);
}
return result;
}
std::vector<uint64_t> UnsignedTransactionImpl::mixin() const
{
std::vector<uint64_t> result;
for (const auto &utx: m_unsigned_tx_set.txes) {
size_t min_mixin = ~0;
// TODO: Is this loop needed or is sources[0] ?
for (size_t s = 0; s < utx.sources.size(); ++s) {
size_t mixin = utx.sources[s].outputs.size() - 1;
if (mixin < min_mixin)
min_mixin = mixin;
}
result.push_back(min_mixin);
}
return result;
}
uint64_t UnsignedTransactionImpl::txCount() const
{
return m_unsigned_tx_set.txes.size();
}
std::vector<std::string> UnsignedTransactionImpl::paymentId() const
{
std::vector<string> result;
for (const auto &utx: m_unsigned_tx_set.txes) {
crypto::hash payment_id = crypto::null_hash;
cryptonote::tx_extra_nonce extra_nonce;
std::vector<cryptonote::tx_extra_field> tx_extra_fields;
cryptonote::parse_tx_extra(utx.extra, tx_extra_fields);
if (cryptonote::find_tx_extra_field_by_type(tx_extra_fields, extra_nonce))
{
crypto::hash8 payment_id8 = crypto::null_hash8;
if(cryptonote::get_encrypted_payment_id_from_tx_extra_nonce(extra_nonce.nonce, payment_id8))
{
// We can't decrypt short pid without recipient key.
memcpy(payment_id.data, payment_id8.data, 8);
}
else if (!cryptonote::get_payment_id_from_tx_extra_nonce(extra_nonce.nonce, payment_id))
{
payment_id = crypto::null_hash;
}
}
if(payment_id != crypto::null_hash)
result.push_back(epee::string_tools::pod_to_hex(payment_id));
else
result.push_back("");
}
return result;
}
std::vector<std::string> UnsignedTransactionImpl::recipientAddress() const
{
// TODO: return integrated address if short payment ID exists
std::vector<string> result;
for (const auto &utx: m_unsigned_tx_set.txes) {
if (utx.dests.empty()) {
MERROR("empty destinations, skipped");
continue;
}
result.push_back(cryptonote::get_account_address_as_str(m_wallet.m_wallet->nettype(), utx.dests[0].is_subaddress, utx.dests[0].addr));
}
return result;
}
uint64_t UnsignedTransactionImpl::minMixinCount() const
{
uint64_t min_mixin = ~0;
for (const auto &utx: m_unsigned_tx_set.txes) {
for (size_t s = 0; s < utx.sources.size(); ++s) {
size_t mixin = utx.sources[s].outputs.size() - 1;
if (mixin < min_mixin)
min_mixin = mixin;
}
}
return min_mixin;
}
} // namespace
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