monero/src/device_trezor/device_trezor.cpp
moneromooo-monero 8d71b2b1b3
wallet2: only export necessary outputs and key images
and disable annoying test that requires ridiculous amounts
of skullduggery every time some format changes
2018-11-04 22:27:01 +00:00

364 lines
15 KiB
C++

// Copyright (c) 2017-2018, 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"
namespace hw {
namespace trezor {
#if WITH_DEVICE_TREZOR
#undef MONERO_DEFAULT_LOG_CATEGORY
#define MONERO_DEFAULT_LOG_CATEGORY "device.trezor"
#define HW_TREZOR_NAME "Trezor"
#define HW_TREZOR_NAME_LITE "TrezorLite"
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() {
}
device_trezor::~device_trezor() {
try {
disconnect();
release();
} catch(std::exception const& e){
MWARNING("Could not disconnect and release: " << 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");
spendkey = crypto::null_skey; // not given
memcpy(viewkey.data, res->watch_key().data(), 32);
return true;
} catch(std::exception const& e){
MERROR("Get secret keys exception: " << e.what());
return false;
}
}
/* ======================================================================= */
/* Helpers */
/* ======================================================================= */
/* ======================================================================= */
/* TREZOR PROTOCOL */
/* ======================================================================= */
std::shared_ptr<messages::monero::MoneroAddress> device_trezor::get_address(
const boost::optional<std::vector<uint32_t>> & path,
const boost::optional<cryptonote::network_type> & network_type){
AUTO_LOCK_CMD();
require_connected();
test_ping();
auto req = std::make_shared<messages::monero::MoneroGetAddress>();
this->set_msg_addr<messages::monero::MoneroGetAddress>(req.get(), path, network_type);
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){
AUTO_LOCK_CMD();
require_connected();
test_ping();
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;
}
void device_trezor::ki_sync(wallet_shim * wallet,
const std::vector<tools::wallet2::transfer_details> & transfers,
hw::device_cold::exported_key_image & ski)
{
AUTO_LOCK_CMD();
require_connected();
test_ping();
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);
protocol::ki::generate_commitment(mtds, transfers, req);
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");
}
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){
char buff[32*3];
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);
::crypto::signature sig{};
::crypto::key_image ki;
memcpy(ki.data, buff, 32);
memcpy(sig.c.data, buff + 32, 32);
memcpy(sig.r.data, buff + 64, 32);
ski.push_back(std::make_pair(ki, sig));
}
}
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");
size_t num_tx = unsigned_tx.txes.size();
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 = 0;
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
cryptonote::blobdata tx_blob;
cryptonote::transaction tx_deserialized;
bool r = cryptonote::t_serializable_object_to_blob(cpend.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");
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
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];
auto vini = boost::get<cryptonote::txin_to_key>(cdata.tx.vin[src_idx]);
CHECK_AND_ASSERT_THROW_MES(idx_map_src < signed_tx.key_images.size(), "Invalid key image index");
signed_tx.key_images[idx_map_src] = vini.k_image;
}
}
}
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)
{
AUTO_LOCK_CMD();
require_connected();
test_ping();
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());
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);
}
// 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);
}
// Step: input_vini
if (!signer->in_memory()){
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);
}
}
// 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);
// 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);
}
// 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);
// 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);
}
// 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);
}
#else //WITH_DEVICE_TREZOR
void register_all(std::map<std::string, std::unique_ptr<device>> &registry) {
}
void register_all() {
}
#endif //WITH_DEVICE_TREZOR
}}