client: implement PassphraseRequest.on_device handling

trezorlib/client.py

@@ -278,6 +278,9 @@ class TextUIMixin(object):
         return proto.PinMatrixAck(pin=pin)
 
     def callback_PassphraseRequest(self, msg):
+        if msg.on_device is True:
+            return proto.PassphraseAck()
+
         if os.getenv("PASSPHRASE") is not None:
             log("Passphrase required. Using PASSPHRASE environment variable.")
             passphrase = Mnemonic.normalize_string(os.getenv("PASSPHRASE"))

trezorlib/messages/PassphraseAck.py

@@ -6,5 +6,6 @@ from .. import protobuf as p
 class PassphraseAck(p.MessageType):
     FIELDS = {
         1: ('passphrase', p.UnicodeType, 0),  # required
+        2: ('state', p.BytesType, 0),
     }
     MESSAGE_WIRE_TYPE = 42

trezorlib/messages/PassphraseRequest.py

@@ -4,4 +4,7 @@ from .. import protobuf as p
 
 
 class PassphraseRequest(p.MessageType):
+    FIELDS = {
+        1: ('on_device', p.BoolType, 0),
+    }
     MESSAGE_WIRE_TYPE = 41