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

1 files changed, 17 insertions, 4 deletions

diff --git a/src/device/device.hpp b/src/device/device.hpp
index 408f64c8b..471302bc4 100644
--- a/src/device/device.hpp
+++ b/src/device/device.hpp
@@ -70,6 +70,7 @@ namespace cryptonote
     struct account_keys;
     struct subaddress_index;
     struct tx_destination_entry;
+    struct keypair;
 }
 
 namespace hw {
@@ -81,11 +82,18 @@ namespace hw {
            return false;
     }
 
+    class device_progress {
+    public:
+      virtual double progress() const { return 0; }
+      virtual bool indeterminate() const { return false; }
+    };
+
     class i_device_callback {
     public:
-        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) {}
+        virtual void on_button_request(uint64_t code=0) {}
+        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) {}
         virtual ~i_device_callback() = default;
     };
 
@@ -141,6 +149,9 @@ namespace hw {
         virtual void set_callback(i_device_callback * callback) {};
         virtual void set_derivation_path(const std::string &derivation_path) {};
 
+        virtual void set_pin(const epee::wipeable_string & pin) {}
+        virtual void set_passphrase(const epee::wipeable_string & passphrase) {}
+
         /* ======================================================================= */
         /*  LOCKER                                                                 */
         /* ======================================================================= */ 
@@ -229,7 +240,9 @@ namespace hw {
 
         virtual bool  has_ki_cold_sync(void) const { return false; }
         virtual bool  has_tx_cold_sign(void) const { return false; }
-
+        virtual bool  has_ki_live_refresh(void) const { return true; }
+        virtual bool  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) { return false; }
+        virtual void  computing_key_images(bool started) {};
         virtual void  set_network_type(cryptonote::network_type network_type) { }
 
     protected: