device/trezor: passphrase entry on host

- simple device callback object added. Device can request passphrase/PIN entry via the callback or notify user some action is required
- callback is routed to wallet2, which routes the callback to i_wallet_callback so CLI or GUI wallets can support passphrase entry for HW tokens
- wallet: device open needs wallet callback first - passphrase protected device needs wallet callback so user can enter passphrase

2 files changed, 39 insertions, 1 deletions

diff --git a/src/simplewallet/simplewallet.cpp b/src/simplewallet/simplewallet.cpp
index d9fd0c13e..6d19235c5 100644
--- a/src/simplewallet/simplewallet.cpp
+++ b/src/simplewallet/simplewallet.cpp
@@ -3786,6 +3786,7 @@ boost::optional<epee::wipeable_string> simple_wallet::new_wallet(const boost::pr
 {
   auto rc = tools::wallet2::make_new(vm, false, password_prompter);
   m_wallet = std::move(rc.first);
+  m_wallet->callback(this);
   if (!m_wallet)
   {
     return {};
@@ -3893,7 +3894,7 @@ bool simple_wallet::open_wallet(const boost::program_options::variables_map& vm)
   epee::wipeable_string password;
   try
   {
-    auto rc = tools::wallet2::make_from_file(vm, false, m_wallet_file, password_prompter);
+    auto rc = tools::wallet2::make_from_file(vm, false, "", password_prompter);
     m_wallet = std::move(rc.first);
     password = std::move(std::move(rc.second).password());
     if (!m_wallet)
@@ -3901,6 +3902,8 @@ bool simple_wallet::open_wallet(const boost::program_options::variables_map& vm)
       return false;
     }
 
+    m_wallet->callback(this);
+    m_wallet->load(m_wallet_file, password);
     std::string prefix;
     bool ready;
     uint32_t threshold, total;
@@ -4304,6 +4307,38 @@ boost::optional<epee::wipeable_string> simple_wallet::on_get_password(const char
   return pwd_container->password();
 }
 //----------------------------------------------------------------------------------------------------
+void simple_wallet::on_button_request()
+{
+  message_writer(console_color_white, false) << tr("Device requires attention");
+}
+//----------------------------------------------------------------------------------------------------
+void simple_wallet::on_pin_request(epee::wipeable_string & pin)
+{
+#ifdef HAVE_READLINE
+  rdln::suspend_readline pause_readline;
+#endif
+  std::string msg = tr("Enter device PIN");
+  auto pwd_container = tools::password_container::prompt(false, msg.c_str());
+  THROW_WALLET_EXCEPTION_IF(!pwd_container, tools::error::password_entry_failed, tr("Failed to read device PIN"));
+  pin = pwd_container->password();
+}
+//----------------------------------------------------------------------------------------------------
+void simple_wallet::on_passphrase_request(bool on_device, epee::wipeable_string & passphrase)
+{
+  if (on_device){
+    message_writer(console_color_white, true) << tr("Please enter the device passphrase on the device");
+    return;
+  }
+
+#ifdef HAVE_READLINE
+  rdln::suspend_readline pause_readline;
+#endif
+  std::string msg = tr("Enter device passphrase");
+  auto pwd_container = tools::password_container::prompt(false, msg.c_str());
+  THROW_WALLET_EXCEPTION_IF(!pwd_container, tools::error::password_entry_failed, tr("Failed to read device passphrase"));
+  passphrase = pwd_container->password();
+}
+//----------------------------------------------------------------------------------------------------
 bool simple_wallet::refresh_main(uint64_t start_height, enum ResetType reset, bool is_init)
 {
   if (!try_connect_to_daemon(is_init))
diff --git a/src/simplewallet/simplewallet.h b/src/simplewallet/simplewallet.h
index 421afbeda..7e2edba7f 100644
--- a/src/simplewallet/simplewallet.h
+++ b/src/simplewallet/simplewallet.h
@@ -287,6 +287,9 @@ namespace cryptonote
     virtual void on_money_spent(uint64_t height, const crypto::hash &txid, const cryptonote::transaction& in_tx, uint64_t amount, const cryptonote::transaction& spend_tx, const cryptonote::subaddress_index& subaddr_index);
     virtual void on_skip_transaction(uint64_t height, const crypto::hash &txid, const cryptonote::transaction& tx);
     virtual boost::optional<epee::wipeable_string> on_get_password(const char *reason);
+    virtual void on_button_request();
+    virtual void on_pin_request(epee::wipeable_string & pin);
+    virtual void on_passphrase_request(bool on_device, epee::wipeable_string & passphrase);
     //----------------------------------------------------------
 
     friend class refresh_progress_reporter_t;