device/trezor: add button pressed request

src/device/device.hpp

@@ -76,6 +76,7 @@ namespace hw {
     class i_device_callback {
     public:
         virtual void on_button_request(uint64_t code=0) {}
+        virtual void on_button_pressed() {}
         virtual boost::optional<epee::wipeable_string> on_pin_request() { return boost::none; }
         virtual boost::optional<epee::wipeable_string> on_passphrase_request(bool on_device) { return boost::none; }
         virtual void on_progress(const device_progress& event) {}

src/device_trezor/device_trezor_base.cpp

@@ -43,7 +43,7 @@ namespace trezor {
 
     const uint32_t device_trezor_base::DEFAULT_BIP44_PATH[] = {0x8000002c, 0x80000080};
 
-    device_trezor_base::device_trezor_base(): m_callback(nullptr) {
+    device_trezor_base::device_trezor_base(): m_callback(nullptr), m_last_msg_type(messages::MessageType_Success) {
 #ifdef WITH_TREZOR_DEBUGGING
       m_debug = false;
 #endif
@@ -275,6 +275,12 @@ namespace trezor {
       // Later if needed this generic message handler can be replaced by a pointer to
       // a protocol message handler which by default points to the device class which implements
       // the default handler.
+
+      if (m_last_msg_type == messages::MessageType_ButtonRequest){
+        on_button_pressed();
+      }
+      m_last_msg_type = input.m_type;
+
       switch(input.m_type){
         case messages::MessageType_ButtonRequest:
           on_button_request(input, dynamic_cast<const messages::common::ButtonRequest*>(input.m_msg.get()));
@@ -413,6 +419,11 @@ namespace trezor {
       resp = read_raw();
     }
 
+    void device_trezor_base::on_button_pressed()
+    {
+      TREZOR_CALLBACK(on_button_pressed);
+    }
+
     void device_trezor_base::on_pin_request(GenericMessage & resp, const messages::common::PinMatrixRequest * msg)
     {
       MDEBUG("on_pin_request");

src/device_trezor/device_trezor_base.hpp

@@ -98,6 +98,7 @@ namespace trezor {
       std::shared_ptr<messages::management::Features> m_features;  // features from the last device reset
       boost::optional<epee::wipeable_string> m_pin;
       boost::optional<epee::wipeable_string> m_passphrase;
+      messages::MessageType m_last_msg_type;
 
       cryptonote::network_type network_type;
 
@@ -311,6 +312,7 @@ namespace trezor {
 
     // Protocol callbacks
     void on_button_request(GenericMessage & resp, const messages::common::ButtonRequest * msg);
+    void on_button_pressed();
     void on_pin_request(GenericMessage & resp, const messages::common::PinMatrixRequest * msg);
     void on_passphrase_request(GenericMessage & resp, const messages::common::PassphraseRequest * msg);
     void on_passphrase_state_request(GenericMessage & resp, const messages::common::PassphraseStateRequest * msg);

src/wallet/api/wallet.cpp

@@ -249,6 +249,13 @@ struct Wallet2CallbackImpl : public tools::i_wallet2_callback
       }
     }
 
+    virtual void on_device_button_pressed()
+    {
+      if (m_listener) {
+        m_listener->onDeviceButtonPressed();
+      }
+    }
+
     virtual boost::optional<epee::wipeable_string> on_device_pin_request()
     {
       if (m_listener) {

src/wallet/api/wallet2_api.h

@@ -385,6 +385,11 @@ struct WalletListener
      */
     virtual void onDeviceButtonRequest(uint64_t code) { (void)code; }
 
+    /**
+     * @brief called by device if the button was pressed
+     */
+    virtual void onDeviceButtonPressed() { }
+
     /**
      * @brief called by device when PIN is needed
      */

src/wallet/wallet2.cpp

@@ -978,6 +978,12 @@ void wallet_device_callback::on_button_request(uint64_t code)
     wallet->on_device_button_request(code);
 }
 
+void wallet_device_callback::on_button_pressed()
+{
+  if (wallet)
+    wallet->on_device_button_pressed();
+}
+
 boost::optional<epee::wipeable_string> wallet_device_callback::on_pin_request()
 {
   if (wallet)
@@ -12855,6 +12861,12 @@ void wallet2::on_device_button_request(uint64_t code)
     m_callback->on_device_button_request(code);
 }
 //----------------------------------------------------------------------------------------------------
+void wallet2::on_device_button_pressed()
+{
+  if (nullptr != m_callback)
+    m_callback->on_device_button_pressed();
+}
+//----------------------------------------------------------------------------------------------------
 boost::optional<epee::wipeable_string> wallet2::on_device_pin_request()
 {
   if (nullptr != m_callback)

src/wallet/wallet2.h

@@ -105,6 +105,7 @@ namespace tools
     virtual void on_lw_money_spent(uint64_t height, const crypto::hash &txid, uint64_t amount) {}
     // Device callbacks
     virtual void on_device_button_request(uint64_t code) {}
+    virtual void on_device_button_pressed() {}
     virtual boost::optional<epee::wipeable_string> on_device_pin_request() { return boost::none; }
     virtual boost::optional<epee::wipeable_string> on_device_passphrase_request(bool on_device) { return boost::none; }
     virtual void on_device_progress(const hw::device_progress& event) {};
@@ -118,6 +119,7 @@ namespace tools
   public:
     wallet_device_callback(wallet2 * wallet): wallet(wallet) {};
     void on_button_request(uint64_t code=0) override;
+    void on_button_pressed() override;
     boost::optional<epee::wipeable_string> on_pin_request() override;
     boost::optional<epee::wipeable_string> on_passphrase_request(bool on_device) override;
     void on_progress(const hw::device_progress& event) override;
@@ -1367,6 +1369,7 @@ namespace tools
 
     wallet_device_callback * get_device_callback();
     void on_device_button_request(uint64_t code);
+    void on_device_button_pressed();
     boost::optional<epee::wipeable_string> on_device_pin_request();
     boost::optional<epee::wipeable_string> on_device_passphrase_request(bool on_device);
     void on_device_progress(const hw::device_progress& event);