device/trezor: HF10 support added, wallet::API

- import only key images generated by cold signing process
- wallet_api: trezor methods added
- wallet: button request code added
- const added to methods
- wallet2::get_tx_key_device() tries to decrypt stored tx private keys using the device.
- simplewallet supports get_tx_key and get_tx_proof on hw device using the get_tx_key feature
- live refresh enables refresh with trezor i.e. computing key images on the fly. More convenient and efficient for users.
- device: has_ki_live_refresh added
- a thread is watching whether live refresh is being computed, if not for 30 seconds, it terminates the live refresh process - switches Trezor state

src/wallet/api/wallet.cpp

@@ -242,6 +242,42 @@ struct Wallet2CallbackImpl : public tools::i_wallet2_callback
       }
     }
 
+    virtual void on_device_button_request(uint64_t code)
+    {
+      if (m_listener) {
+        m_listener->onDeviceButtonRequest(code);
+      }
+    }
+
+    virtual boost::optional<epee::wipeable_string> on_device_pin_request()
+    {
+      if (m_listener) {
+        auto pin = m_listener->onDevicePinRequest();
+        if (pin){
+          return boost::make_optional(epee::wipeable_string((*pin).data(), (*pin).size()));
+        }
+      }
+      return boost::none;
+    }
+
+    virtual boost::optional<epee::wipeable_string> on_device_passphrase_request(bool on_device)
+    {
+      if (m_listener) {
+        auto passphrase = m_listener->onDevicePassphraseRequest(on_device);
+        if (!on_device && passphrase) {
+          return boost::make_optional(epee::wipeable_string((*passphrase).data(), (*passphrase).size()));
+        }
+      }
+      return boost::none;
+    }
+
+    virtual void on_device_progress(const hw::device_progress & event)
+    {
+      if (m_listener) {
+        m_listener->onDeviceProgress(DeviceProgress(event.progress(), event.indeterminate()));
+      }
+    }
+
     WalletListener * m_listener;
     WalletImpl     * m_wallet;
 };
@@ -785,6 +821,28 @@ bool WalletImpl::setPassword(const std::string &password)
     return status() == Status_Ok;
 }
 
+bool WalletImpl::setDevicePin(const std::string &pin)
+{
+    clearStatus();
+    try {
+        m_wallet->get_account().get_device().set_pin(epee::wipeable_string(pin.data(), pin.size()));
+    } catch (const std::exception &e) {
+        setStatusError(e.what());
+    }
+    return status() == Status_Ok;
+}
+
+bool WalletImpl::setDevicePassphrase(const std::string &passphrase)
+{
+    clearStatus();
+    try {
+        m_wallet->get_account().get_device().set_passphrase(epee::wipeable_string(passphrase.data(), passphrase.size()));
+    } catch (const std::exception &e) {
+        setStatusError(e.what());
+    }
+    return status() == Status_Ok;
+}
+
 std::string WalletImpl::address(uint32_t accountIndex, uint32_t addressIndex) const
 {
     return m_wallet->get_subaddress_as_str({accountIndex, addressIndex});
@@ -1428,6 +1486,8 @@ PendingTransaction *WalletImpl::createTransaction(const string &dst_addr, const
                                                                           extra, subaddr_account, subaddr_indices);
             }
 
+            pendingTxPostProcess(transaction);
+
             if (multisig().isMultisig) {
                 transaction->m_signers = m_wallet->make_multisig_tx_set(transaction->m_pending_tx).m_signers;
             }
@@ -1511,6 +1571,7 @@ PendingTransaction *WalletImpl::createSweepUnmixableTransaction()
     do {
         try {
             transaction->m_pending_tx = m_wallet->create_unmixable_sweep_transactions();
+            pendingTxPostProcess(transaction);
 
         } catch (const tools::error::daemon_busy&) {
             // TODO: make it translatable with "tr"?
@@ -2093,6 +2154,21 @@ bool WalletImpl::isNewWallet() const
     return !(blockChainHeight() > 1 || m_recoveringFromSeed || m_recoveringFromDevice || m_rebuildWalletCache) && !watchOnly();
 }
 
+void WalletImpl::pendingTxPostProcess(PendingTransactionImpl * pending)
+{
+  // If the device being used is HW device with cold signing protocol, cold sign then.
+  if (!m_wallet->get_account().get_device().has_tx_cold_sign()){
+    return;
+  }
+
+  tools::wallet2::signed_tx_set exported_txs;
+  std::vector<cryptonote::address_parse_info> dsts_info;
+
+  m_wallet->cold_sign_tx(pending->m_pending_tx, exported_txs, dsts_info, pending->m_tx_device_aux);
+  pending->m_key_images = exported_txs.key_images;
+  pending->m_pending_tx = exported_txs.ptx;
+}
+
 bool WalletImpl::doInit(const string &daemon_address, uint64_t upper_transaction_size_limit, bool ssl)
 {
     // claim RPC so there's no in-memory encryption for now
@@ -2325,6 +2401,11 @@ bool WalletImpl::isKeysFileLocked()
 {
     return m_wallet->is_keys_file_locked();
 }
+
+uint64_t WalletImpl::coldKeyImageSync(uint64_t &spent, uint64_t &unspent)
+{
+    return m_wallet->cold_key_image_sync(spent, unspent);
+}
 } // namespace
 
 namespace Bitmonero = Monero;