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monero/src/device_trezor/device_trezor.cpp

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// Copyright (c) 2017-2020, 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.
//
#include "device_trezor.hpp"
#include <boost/filesystem.hpp>
#include <boost/algorithm/string/predicate.hpp>
namespace hw {
namespace trezor {
#ifdef WITH_DEVICE_TREZOR
#undef MONERO_DEFAULT_LOG_CATEGORY
#define MONERO_DEFAULT_LOG_CATEGORY "device.trezor"
#define HW_TREZOR_NAME "Trezor"
static device_trezor *trezor_device = nullptr;
static device_trezor *ensure_trezor_device(){
if (!trezor_device) {
trezor_device = new device_trezor();
trezor_device->set_name(HW_TREZOR_NAME);
}
return trezor_device;
}
void register_all(std::map<std::string, std::unique_ptr<device>> &registry) {
registry.insert(std::make_pair(HW_TREZOR_NAME, std::unique_ptr<device>(ensure_trezor_device())));
}
void register_all() {
hw::register_device(HW_TREZOR_NAME, ensure_trezor_device());
}
device_trezor::device_trezor() {
m_live_refresh_in_progress = false;
m_live_refresh_enabled = true;
m_live_refresh_thread_running = false;
}
device_trezor::~device_trezor() {
try {
device_trezor::disconnect();
device_trezor::release();
} catch(std::exception const& e){
MWARNING("Could not disconnect and release: " << e.what());
}
}
bool device_trezor::init()
{
m_live_refresh_in_progress = false;
bool r = device_trezor_base::init();
if (r && !m_live_refresh_thread)
{
m_live_refresh_thread_running = true;
m_live_refresh_thread.reset(new boost::thread(boost::bind(&device_trezor::live_refresh_thread_main, this)));
}
return r;
}
bool device_trezor::release()
{
m_live_refresh_in_progress = false;
m_live_refresh_thread_running = false;
if (m_live_refresh_thread)
{
m_live_refresh_thread->join();
m_live_refresh_thread = nullptr;
}
return device_trezor_base::release();
}
bool device_trezor::disconnect()
{
m_live_refresh_in_progress = false;
return device_trezor_base::disconnect();
}
void device_trezor::device_state_initialize_unsafe()
{
require_connected();
if (m_live_refresh_in_progress)
{
try
{
live_refresh_finish_unsafe();
}
catch(const std::exception & e)
{
MERROR("Live refresh could not be terminated: " << e.what());
}
}
m_live_refresh_in_progress = false;
device_trezor_base::device_state_initialize_unsafe();
}
void device_trezor::live_refresh_thread_main()
{
while(m_live_refresh_thread_running)
{
boost::this_thread::sleep_for(boost::chrono::milliseconds(100));
if (!m_live_refresh_in_progress)
{
continue;
}
TREZOR_AUTO_LOCK_DEVICE();
if (!m_transport || !m_live_refresh_in_progress)
{
continue;
}
auto current_time = std::chrono::steady_clock::now();
if (current_time - m_last_live_refresh_time <= std::chrono::minutes(5))
{
continue;
}
MTRACE("Closing live refresh process due to inactivity");
try
{
live_refresh_finish();
}
catch(const std::exception &e)
{
MWARNING("Live refresh auto-finish failed: " << e.what());
}
}
}
/* ======================================================================= */
/* WALLET & ADDRESS */
/* ======================================================================= */
bool device_trezor::get_public_address(cryptonote::account_public_address &pubkey) {
try {
auto res = get_address();
cryptonote::address_parse_info info{};
bool r = cryptonote::get_account_address_from_str(info, this->network_type, res->address());
CHECK_AND_ASSERT_MES(r, false, "Could not parse returned address. Address parse failed: " + res->address());
CHECK_AND_ASSERT_MES(!info.is_subaddress, false, "Trezor returned a sub address");
pubkey = info.address;
return true;
} catch(std::exception const& e){
MERROR("Get public address exception: " << e.what());
return false;
}
}
bool device_trezor::get_secret_keys(crypto::secret_key &viewkey , crypto::secret_key &spendkey) {
try {
MDEBUG("Loading view-only key from the Trezor. Please check the Trezor for a confirmation.");
auto res = get_view_key();
CHECK_AND_ASSERT_MES(res->watch_key().size() == 32, false, "Trezor returned invalid view key");
// Trezor does not make use of spendkey of the device API.
// Ledger loads encrypted spendkey, Trezor loads null key (never leaves device).
// In the test (debugging mode) we need to leave this field intact as it is already set by
// the debugging code and need to remain same for the testing purposes.
#ifndef WITH_TREZOR_DEBUGGING
spendkey = crypto::null_skey; // not given
#endif
memcpy(viewkey.data, res->watch_key().data(), 32);
return true;
} catch(std::exception const& e){
MERROR("Get secret keys exception: " << e.what());
return false;
}
}
void device_trezor::display_address(const cryptonote::subaddress_index& index, const boost::optional<crypto::hash8> &payment_id) {
get_address(index, payment_id, true);
}
/* ======================================================================= */
/* Helpers */
/* ======================================================================= */
/* ======================================================================= */
/* TREZOR PROTOCOL */
/* ======================================================================= */
std::shared_ptr<messages::monero::MoneroAddress> device_trezor::get_address(
const boost::optional<cryptonote::subaddress_index> & subaddress,
const boost::optional<crypto::hash8> & payment_id,
bool show_address,
const boost::optional<std::vector<uint32_t>> & path,
const boost::optional<cryptonote::network_type> & network_type){
CHECK_AND_ASSERT_THROW_MES(!payment_id || !subaddress || subaddress->is_zero(), "Subaddress cannot be integrated");
TREZOR_AUTO_LOCK_CMD();
require_connected();
device_state_initialize_unsafe();
require_initialized();
auto req = std::make_shared<messages::monero::MoneroGetAddress>();
this->set_msg_addr<messages::monero::MoneroGetAddress>(req.get(), path, network_type);
req->set_show_display(show_address);
if (subaddress){
req->set_account(subaddress->major);
req->set_minor(subaddress->minor);
}
if (payment_id){
req->set_payment_id(std::string(payment_id->data, 8));
}
auto response = this->client_exchange<messages::monero::MoneroAddress>(req);
MTRACE("Get address response received");
return response;
}
std::shared_ptr<messages::monero::MoneroWatchKey> device_trezor::get_view_key(
const boost::optional<std::vector<uint32_t>> & path,
const boost::optional<cryptonote::network_type> & network_type){
TREZOR_AUTO_LOCK_CMD();
require_connected();
device_state_initialize_unsafe();
require_initialized();
auto req = std::make_shared<messages::monero::MoneroGetWatchKey>();
this->set_msg_addr<messages::monero::MoneroGetWatchKey>(req.get(), path, network_type);
auto response = this->client_exchange<messages::monero::MoneroWatchKey>(req);
MTRACE("Get watch key response received");
return response;
}
bool device_trezor::is_get_tx_key_supported() const
{
require_initialized();
return get_version() > pack_version(2, 0, 10);
}
void device_trezor::load_tx_key_data(::hw::device_cold::tx_key_data_t & res, const std::string & tx_aux_data)
{
protocol::tx::load_tx_key_data(res, tx_aux_data);
}
void device_trezor::get_tx_key(
std::vector<::crypto::secret_key> & tx_keys,
const ::hw::device_cold::tx_key_data_t & tx_aux_data,
const ::crypto::secret_key & view_key_priv)
{
TREZOR_AUTO_LOCK_CMD();
require_connected();
device_state_initialize_unsafe();
require_initialized();
auto req = protocol::tx::get_tx_key(tx_aux_data);
this->set_msg_addr<messages::monero::MoneroGetTxKeyRequest>(req.get());
auto response = this->client_exchange<messages::monero::MoneroGetTxKeyAck>(req);
MTRACE("Get TX key response received");
protocol::tx::get_tx_key_ack(tx_keys, tx_aux_data.tx_prefix_hash, view_key_priv, response);
}
void device_trezor::ki_sync(wallet_shim * wallet,
const std::vector<tools::wallet2::transfer_details> & transfers,
hw::device_cold::exported_key_image & ski)
{
#define EVENT_PROGRESS(P) do { if (m_callback) {(m_callback)->on_progress(device_cold::op_progress(P)); } }while(0)
TREZOR_AUTO_LOCK_CMD();
require_connected();
device_state_initialize_unsafe();
require_initialized();
std::shared_ptr<messages::monero::MoneroKeyImageExportInitRequest> req;
std::vector<protocol::ki::MoneroTransferDetails> mtds;
std::vector<protocol::ki::MoneroExportedKeyImage> kis;
protocol::ki::key_image_data(wallet, transfers, mtds, client_version() <= 1);
protocol::ki::generate_commitment(mtds, transfers, req, client_version() <= 1);
EVENT_PROGRESS(0.);
this->set_msg_addr<messages::monero::MoneroKeyImageExportInitRequest>(req.get());
auto ack1 = this->client_exchange<messages::monero::MoneroKeyImageExportInitAck>(req);
const auto batch_size = 10;
const auto num_batches = (mtds.size() + batch_size - 1) / batch_size;
for(uint64_t cur = 0; cur < num_batches; ++cur){
auto step_req = std::make_shared<messages::monero::MoneroKeyImageSyncStepRequest>();
auto idx_finish = std::min(static_cast<uint64_t>((cur + 1) * batch_size), static_cast<uint64_t>(mtds.size()));
for(uint64_t idx = cur * batch_size; idx < idx_finish; ++idx){
auto added_tdis = step_req->add_tdis();
CHECK_AND_ASSERT_THROW_MES(idx < mtds.size(), "Invalid transfer detail index");
*added_tdis = mtds[idx];
}
auto step_ack = this->client_exchange<messages::monero::MoneroKeyImageSyncStepAck>(step_req);
auto kis_size = step_ack->kis_size();
kis.reserve(static_cast<size_t>(kis_size));
for(int i = 0; i < kis_size; ++i){
auto ckis = step_ack->kis(i);
kis.push_back(ckis);
}
MTRACE("Batch " << cur << " / " << num_batches << " batches processed");
EVENT_PROGRESS((double)cur * batch_size / mtds.size());
}
EVENT_PROGRESS(1.);
auto final_req = std::make_shared<messages::monero::MoneroKeyImageSyncFinalRequest>();
auto final_ack = this->client_exchange<messages::monero::MoneroKeyImageSyncFinalAck>(final_req);
ski.reserve(kis.size());
for(auto & sub : kis){
::crypto::signature sig{};
::crypto::key_image ki;
char buff[sizeof(ki.data)*3];
size_t buff_len = sizeof(buff);
protocol::crypto::chacha::decrypt(sub.blob().data(), sub.blob().size(),
reinterpret_cast<const uint8_t *>(final_ack->enc_key().data()),
reinterpret_cast<const uint8_t *>(sub.iv().data()), buff, &buff_len);
CHECK_AND_ASSERT_THROW_MES(buff_len == sizeof(buff), "Plaintext size invalid");
memcpy(ki.data, buff, sizeof(ki.data));
memcpy(sig.c.data, buff + sizeof(ki.data), sizeof(ki.data));
memcpy(sig.r.data, buff + 2*sizeof(ki.data), sizeof(ki.data));
ski.push_back(std::make_pair(ki, sig));
}
#undef EVENT_PROGRESS
}
bool device_trezor::is_live_refresh_supported() const
{
require_initialized();
return get_version() > pack_version(2, 0, 10);
}
bool device_trezor::is_live_refresh_enabled() const
{
return is_live_refresh_supported() && (mode == NONE || mode == TRANSACTION_PARSE) && m_live_refresh_enabled;
}
bool device_trezor::has_ki_live_refresh() const
{
try{
return is_live_refresh_enabled();
} catch(const std::exception & e){
MERROR("Could not detect if live refresh is enabled: " << e.what());
}
return false;
}
void device_trezor::live_refresh_start()
{
TREZOR_AUTO_LOCK_CMD();
require_connected();
live_refresh_start_unsafe();
}
void device_trezor::live_refresh_start_unsafe()
{
device_state_initialize_unsafe();
require_initialized();
auto req = std::make_shared<messages::monero::MoneroLiveRefreshStartRequest>();
this->set_msg_addr<messages::monero::MoneroLiveRefreshStartRequest>(req.get());
this->client_exchange<messages::monero::MoneroLiveRefreshStartAck>(req);
m_live_refresh_in_progress = true;
m_last_live_refresh_time = std::chrono::steady_clock::now();
}
void device_trezor::live_refresh(
const ::crypto::secret_key & view_key_priv,
const crypto::public_key& out_key,
const crypto::key_derivation& recv_derivation,
size_t real_output_index,
const cryptonote::subaddress_index& received_index,
cryptonote::keypair& in_ephemeral,
crypto::key_image& ki
)
{
TREZOR_AUTO_LOCK_CMD();
require_connected();
if (!m_live_refresh_in_progress)
{
live_refresh_start_unsafe();
}
m_last_live_refresh_time = std::chrono::steady_clock::now();
auto req = std::make_shared<messages::monero::MoneroLiveRefreshStepRequest>();
req->set_out_key(out_key.data, 32);
req->set_recv_deriv(recv_derivation.data, 32);
req->set_real_out_idx(real_output_index);
req->set_sub_addr_major(received_index.major);
req->set_sub_addr_minor(received_index.minor);
auto ack = this->client_exchange<messages::monero::MoneroLiveRefreshStepAck>(req);
protocol::ki::live_refresh_ack(view_key_priv, out_key, ack, in_ephemeral, ki);
}
void device_trezor::live_refresh_finish_unsafe()
{
auto req = std::make_shared<messages::monero::MoneroLiveRefreshFinalRequest>();
this->client_exchange<messages::monero::MoneroLiveRefreshFinalAck>(req);
m_live_refresh_in_progress = false;
}
void device_trezor::live_refresh_finish()
{
TREZOR_AUTO_LOCK_CMD();
require_connected();
if (m_live_refresh_in_progress)
{
live_refresh_finish_unsafe();
}
}
void device_trezor::computing_key_images(bool started)
{
try
{
if (!is_live_refresh_enabled())
{
return;
}
// React only on termination as the process can auto-start itself.
if (!started && m_live_refresh_in_progress)
{
live_refresh_finish();
}
}
catch(const std::exception & e)
{
MWARNING("KI computation state change failed, started: " << started << ", e: " << e.what());
}
}
bool device_trezor::compute_key_image(
const ::cryptonote::account_keys& ack,
const ::crypto::public_key& out_key,
const ::crypto::key_derivation& recv_derivation,
size_t real_output_index,
const ::cryptonote::subaddress_index& received_index,
::cryptonote::keypair& in_ephemeral,
::crypto::key_image& ki)
{
if (!is_live_refresh_enabled())
{
return false;
}
live_refresh(ack.m_view_secret_key, out_key, recv_derivation, real_output_index, received_index, in_ephemeral, ki);
return true;
}
void device_trezor::tx_sign(wallet_shim * wallet,
const tools::wallet2::unsigned_tx_set & unsigned_tx,
tools::wallet2::signed_tx_set & signed_tx,
hw::tx_aux_data & aux_data)
{
CHECK_AND_ASSERT_THROW_MES(unsigned_tx.transfers.first == 0, "Unsuported non zero offset");
TREZOR_AUTO_LOCK_CMD();
require_connected();
device_state_initialize_unsafe();
require_initialized();
transaction_versions_check(unsigned_tx, aux_data);
const size_t num_tx = unsigned_tx.txes.size();
m_num_transations_to_sign = num_tx;
signed_tx.key_images.clear();
signed_tx.key_images.resize(unsigned_tx.transfers.second.size());
for(size_t tx_idx = 0; tx_idx < num_tx; ++tx_idx) {
std::shared_ptr<protocol::tx::Signer> signer;
tx_sign(wallet, unsigned_tx, tx_idx, aux_data, signer);
auto & cdata = signer->tdata();
auto aux_info_cur = signer->store_tx_aux_info();
aux_data.tx_device_aux.emplace_back(aux_info_cur);
// Pending tx reconstruction
signed_tx.ptx.emplace_back();
auto & cpend = signed_tx.ptx.back();
cpend.tx = cdata.tx;
cpend.dust = 0;
cpend.fee = cpend.tx.rct_signatures.txnFee;
cpend.dust_added_to_fee = false;
cpend.change_dts = cdata.tx_data.change_dts;
cpend.selected_transfers = cdata.tx_data.selected_transfers;
cpend.key_images = "";
cpend.dests = cdata.tx_data.dests;
cpend.construction_data = cdata.tx_data;
// Transaction check
try {
MDEBUG("signed transaction: " << cryptonote::get_transaction_hash(cpend.tx) << ENDL << cryptonote::obj_to_json_str(cpend.tx) << ENDL);
transaction_check(cdata, aux_data);
} catch(const std::exception &e){
throw exc::ProtocolException(std::string("Transaction verification failed: ") + e.what());
}
std::string key_images;
bool all_are_txin_to_key = std::all_of(cdata.tx.vin.begin(), cdata.tx.vin.end(), [&](const cryptonote::txin_v& s_e) -> bool
{
CHECKED_GET_SPECIFIC_VARIANT(s_e, const cryptonote::txin_to_key, in, false);
key_images += boost::to_string(in.k_image) + " ";
return true;
});
if(!all_are_txin_to_key) {
throw std::invalid_argument("Not all are txin_to_key");
}
cpend.key_images = key_images;
// KI sync
for(size_t cidx=0, trans_max=unsigned_tx.transfers.second.size(); cidx < trans_max; ++cidx){
signed_tx.key_images[cidx] = unsigned_tx.transfers.second[cidx].m_key_image;
}
size_t num_sources = cdata.tx_data.sources.size();
CHECK_AND_ASSERT_THROW_MES(num_sources == cdata.source_permutation.size(), "Invalid permutation size");
CHECK_AND_ASSERT_THROW_MES(num_sources == cdata.tx.vin.size(), "Invalid tx.vin size");
for(size_t src_idx = 0; src_idx < num_sources; ++src_idx){
size_t idx_mapped = cdata.source_permutation[src_idx];
CHECK_AND_ASSERT_THROW_MES(idx_mapped < cdata.tx_data.selected_transfers.size(), "Invalid idx_mapped");
CHECK_AND_ASSERT_THROW_MES(src_idx < cdata.tx.vin.size(), "Invalid idx_mapped");
size_t idx_map_src = cdata.tx_data.selected_transfers[idx_mapped];
CHECK_AND_ASSERT_THROW_MES(idx_map_src >= unsigned_tx.transfers.first, "Invalid offset");
idx_map_src -= unsigned_tx.transfers.first;
CHECK_AND_ASSERT_THROW_MES(idx_map_src < signed_tx.key_images.size(), "Invalid key image index");
const auto vini = boost::get<cryptonote::txin_to_key>(cdata.tx.vin[src_idx]);
signed_tx.key_images[idx_map_src] = vini.k_image;
}
}
if (m_callback){
m_callback->on_progress(device_cold::tx_progress(m_num_transations_to_sign, m_num_transations_to_sign, 1, 1, 1, 1));
}
}
void device_trezor::tx_sign(wallet_shim * wallet,
const tools::wallet2::unsigned_tx_set & unsigned_tx,
size_t idx,
hw::tx_aux_data & aux_data,
std::shared_ptr<protocol::tx::Signer> & signer)
{
#define EVENT_PROGRESS(S, SUB, SUBMAX) do { if (m_callback) { \
(m_callback)->on_progress(device_cold::tx_progress(idx, m_num_transations_to_sign, S, 10, SUB, SUBMAX)); \
} }while(0)
require_connected();
if (idx > 0)
device_state_initialize_unsafe();
require_initialized();
EVENT_PROGRESS(0, 1, 1);
CHECK_AND_ASSERT_THROW_MES(idx < unsigned_tx.txes.size(), "Invalid transaction index");
signer = std::make_shared<protocol::tx::Signer>(wallet, &unsigned_tx, idx, &aux_data);
const tools::wallet2::tx_construction_data & cur_tx = unsigned_tx.txes[idx];
unsigned long num_sources = cur_tx.sources.size();
unsigned long num_outputs = cur_tx.splitted_dsts.size();
// Step: Init
auto init_msg = signer->step_init();
this->set_msg_addr(init_msg.get());
transaction_pre_check(init_msg);
EVENT_PROGRESS(1, 1, 1);
auto response = this->client_exchange<messages::monero::MoneroTransactionInitAck>(init_msg);
signer->step_init_ack(response);
// Step: Set transaction inputs
for(size_t cur_src = 0; cur_src < num_sources; ++cur_src){
auto src = signer->step_set_input(cur_src);
auto ack = this->client_exchange<messages::monero::MoneroTransactionSetInputAck>(src);
signer->step_set_input_ack(ack);
EVENT_PROGRESS(2, cur_src, num_sources);
}
// Step: sort
auto perm_req = signer->step_permutation();
if (perm_req){
auto perm_ack = this->client_exchange<messages::monero::MoneroTransactionInputsPermutationAck>(perm_req);
signer->step_permutation_ack(perm_ack);
}
EVENT_PROGRESS(3, 1, 1);
// Step: input_vini
for(size_t cur_src = 0; cur_src < num_sources; ++cur_src){
auto src = signer->step_set_vini_input(cur_src);
auto ack = this->client_exchange<messages::monero::MoneroTransactionInputViniAck>(src);
signer->step_set_vini_input_ack(ack);
EVENT_PROGRESS(4, cur_src, num_sources);
}
// Step: all inputs set
auto all_inputs_set = signer->step_all_inputs_set();
auto ack_all_inputs = this->client_exchange<messages::monero::MoneroTransactionAllInputsSetAck>(all_inputs_set);
signer->step_all_inputs_set_ack(ack_all_inputs);
EVENT_PROGRESS(5, 1, 1);
// Step: outputs
for(size_t cur_dst = 0; cur_dst < num_outputs; ++cur_dst){
auto src = signer->step_set_output(cur_dst);
auto ack = this->client_exchange<messages::monero::MoneroTransactionSetOutputAck>(src);
signer->step_set_output_ack(ack);
// If BP is offloaded to host, another step with computed BP may be needed.
auto offloaded_bp = signer->step_rsig(cur_dst);
if (offloaded_bp){
auto bp_ack = this->client_exchange<messages::monero::MoneroTransactionSetOutputAck>(offloaded_bp);
signer->step_set_rsig_ack(ack);
}
EVENT_PROGRESS(6, cur_dst, num_outputs);
}
// Step: all outs set
auto all_out_set = signer->step_all_outs_set();
auto ack_all_out_set = this->client_exchange<messages::monero::MoneroTransactionAllOutSetAck>(all_out_set);
signer->step_all_outs_set_ack(ack_all_out_set, *this);
EVENT_PROGRESS(7, 1, 1);
// Step: sign each input
for(size_t cur_src = 0; cur_src < num_sources; ++cur_src){
auto src = signer->step_sign_input(cur_src);
auto ack_sign = this->client_exchange<messages::monero::MoneroTransactionSignInputAck>(src);
signer->step_sign_input_ack(ack_sign);
EVENT_PROGRESS(8, cur_src, num_sources);
}
// Step: final
auto final_msg = signer->step_final();
auto ack_final = this->client_exchange<messages::monero::MoneroTransactionFinalAck>(final_msg);
signer->step_final_ack(ack_final);
EVENT_PROGRESS(9, 1, 1);
#undef EVENT_PROGRESS
}
unsigned device_trezor::client_version()
{
auto trezor_version = get_version();
if (trezor_version <= pack_version(2, 0, 10)){
throw exc::TrezorException("Trezor firmware 2.0.10 and lower are not supported. Please update.");
}
unsigned client_version = 1;
if (trezor_version >= pack_version(2, 3, 1)){
client_version = 3;
}
#ifdef WITH_TREZOR_DEBUGGING
// Override client version for tests
const char *env_trezor_client_version = nullptr;
if ((env_trezor_client_version = getenv("TREZOR_CLIENT_VERSION")) != nullptr){
auto succ = epee::string_tools::get_xtype_from_string(client_version, env_trezor_client_version);
if (succ){
MINFO("Trezor client version overriden by TREZOR_CLIENT_VERSION to: " << client_version);
}
}
#endif
return client_version;
}
void device_trezor::transaction_versions_check(const ::tools::wallet2::unsigned_tx_set & unsigned_tx, hw::tx_aux_data & aux_data)
{
unsigned cversion = client_version();
if (aux_data.client_version){
auto wanted_client_version = aux_data.client_version.get();
if (wanted_client_version > cversion){
throw exc::TrezorException("Trezor has too old firmware version. Please update.");
} else {
cversion = wanted_client_version;
}
}
aux_data.client_version = cversion;
}
void device_trezor::transaction_pre_check(std::shared_ptr<messages::monero::MoneroTransactionInitRequest> init_msg)
{
CHECK_AND_ASSERT_THROW_MES(init_msg, "TransactionInitRequest is empty");
CHECK_AND_ASSERT_THROW_MES(init_msg->has_tsx_data(), "TransactionInitRequest has no transaction data");
CHECK_AND_ASSERT_THROW_MES(m_features, "Device state not initialized"); // make sure the caller did not reset features
const bool nonce_required = init_msg->tsx_data().has_payment_id() && init_msg->tsx_data().payment_id().size() > 0;
if (nonce_required && init_msg->tsx_data().payment_id().size() == 8){
// Versions 2.0.9 and lower do not support payment ID
if (get_version() <= pack_version(2, 0, 9)) {
throw exc::TrezorException("Trezor firmware 2.0.9 and lower does not support transactions with short payment IDs or integrated addresses. Please update.");
}
}
}
void device_trezor::transaction_check(const protocol::tx::TData & tdata, const hw::tx_aux_data & aux_data)
{
// Simple serialization check
cryptonote::blobdata tx_blob;
cryptonote::transaction tx_deserialized;
bool r = cryptonote::t_serializable_object_to_blob(tdata.tx, tx_blob);
CHECK_AND_ASSERT_THROW_MES(r, "Transaction serialization failed");
r = cryptonote::parse_and_validate_tx_from_blob(tx_blob, tx_deserialized);
CHECK_AND_ASSERT_THROW_MES(r, "Transaction deserialization failed");
// Extras check
std::vector<cryptonote::tx_extra_field> tx_extra_fields;
cryptonote::tx_extra_nonce nonce;
r = cryptonote::parse_tx_extra(tdata.tx.extra, tx_extra_fields);
CHECK_AND_ASSERT_THROW_MES(r, "tx.extra parsing failed");
const bool nonce_required = tdata.tsx_data.has_payment_id() && tdata.tsx_data.payment_id().size() > 0;
const bool has_nonce = cryptonote::find_tx_extra_field_by_type(tx_extra_fields, nonce);
CHECK_AND_ASSERT_THROW_MES(has_nonce || !nonce_required, "Transaction nonce not present");
if (nonce_required){
const std::string & payment_id = tdata.tsx_data.payment_id();
if (payment_id.size() == 32){
crypto::hash payment_id_long{};
CHECK_AND_ASSERT_THROW_MES(cryptonote::get_payment_id_from_tx_extra_nonce(nonce.nonce, payment_id_long), "Long payment ID not present");
} else if (payment_id.size() == 8){
crypto::hash8 payment_id_short{};
CHECK_AND_ASSERT_THROW_MES(cryptonote::get_encrypted_payment_id_from_tx_extra_nonce(nonce.nonce, payment_id_short), "Short payment ID not present");
}
}
}
#else //WITH_DEVICE_TREZOR
void register_all(std::map<std::string, std::unique_ptr<device>> &registry) {
}
void register_all() {
}
#endif //WITH_DEVICE_TREZOR
}}
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