wizard: fix regression: unencrypted wallets were not getting upgraded

fixes #5177

electrum/base_wizard.py

@@ -28,7 +28,7 @@ import sys
 import copy
 import traceback
 from functools import partial
-from typing import List, TYPE_CHECKING, Tuple, NamedTuple, Any, Dict
+from typing import List, TYPE_CHECKING, Tuple, NamedTuple, Any, Dict, Optional
 
 from . import bitcoin
 from . import keystore
@@ -137,7 +137,7 @@ class BaseWizard(object):
         exc = None
         def on_finished():
             if exc is None:
-                self.terminate()
+                self.terminate(storage=storage)
             else:
                 raise exc
         def do_upgrade():
@@ -571,6 +571,9 @@ class BaseWizard(object):
         storage.load_plugins()
         return storage
 
+    def terminate(self, *, storage: Optional[WalletStorage] = None):
+        raise NotImplementedError()  # implemented by subclasses
+
     def show_xpub_and_add_cosigners(self, xpub):
         self.show_xpub_dialog(xpub=xpub, run_next=lambda x: self.run('choose_keystore'))
 

electrum/daemon.py

@@ -251,6 +251,8 @@ class Daemon(DaemonThread):
             storage.decrypt(password)
         if storage.requires_split():
             return
+        if storage.requires_upgrade():
+            return
         if storage.get_action():
             return
         wallet = Wallet(storage)

electrum/gui/kivy/main_window.py

@@ -557,7 +557,15 @@ class ElectrumWindow(App):
                 wizard = Factory.InstallWizard(self.electrum_config, self.plugins)
                 wizard.path = path
                 wizard.bind(on_wizard_complete=self.on_wizard_complete)
+                storage = WalletStorage(path, manual_upgrades=True)
+                if not storage.file_exists():
                     wizard.run('new')
+                elif storage.is_encrypted():
+                    raise Exception("Kivy GUI does not support encrypted wallet files.")
+                elif storage.requires_upgrade():
+                    wizard.upgrade_storage(storage)
+                else:
+                    raise Exception("unexpected storage file situation")
             if not ask_if_wizard:
                 launch_wizard()
             else:

electrum/gui/kivy/uix/dialogs/installwizard.py

@@ -971,7 +971,8 @@ class InstallWizard(BaseWizard, Widget):
         t = threading.Thread(target = target)
         t.start()
 
-    def terminate(self, **kwargs):
+    def terminate(self, *, storage=None):
+        if storage is None:
             storage = self.create_storage(self.path)
         self.dispatch('on_wizard_complete', storage)
 

electrum/gui/qt/installwizard.py

@@ -479,7 +479,7 @@ class InstallWizard(QDialog, MessageBoxMixin, BaseWizard):
     def action_dialog(self, action, run_next):
         self.run(action)
 
-    def terminate(self):
+    def terminate(self, **kwargs):
         self.accept_signal.emit()
 
     def waiting_dialog(self, task, msg, on_finished=None):

electrum/storage.py

@@ -219,6 +219,8 @@ class WalletStorage(PrintError):
         self.db.set_modified(True)
 
     def requires_upgrade(self):
+        if not self.is_past_initial_decryption():
+            raise Exception("storage not yet decrypted!")
         return self.db.requires_upgrade()
 
     def upgrade(self):

electrum/wallet.py

@@ -192,6 +192,9 @@ class Abstract_Wallet(AddressSynchronizer):
     verbosity_filter = 'w'
 
     def __init__(self, storage: WalletStorage):
+        if storage.requires_upgrade():
+            raise Exception("storage must be upgraded before constructing wallet")
+
         AddressSynchronizer.__init__(self, storage)
 
         # saved fields