Ensure we don't consider the Tor connection 'lost' if we're still in the connection dialog process (wait for that thread to finish).

Also various implementations of onion.is_authenticated() for a more robust check than onion.connected_to_tor,
which seemed to help some corner cases

onionshare/onion.py

@@ -375,11 +375,16 @@ class Onion(object):
             # ephemeral stealth onion services are not supported
             self.supports_stealth = False
 
+
     def is_authenticated(self):
         """
         Returns True if the Tor connection is still working, or False otherwise.
         """
-        return self.c.is_authenticated()
+        if self.c:
+            return self.c.is_authenticated()
+        else:
+            return False
+
 
     def start_onion_service(self, port):
         """

onionshare_gui/onionshare_gui.py

@@ -142,10 +142,10 @@ class OnionShareGui(QtWidgets.QMainWindow):
         self.set_server_active(False)
 
         # Start the "Connecting to Tor" dialog, which calls onion.connect()
-        tor_con = TorConnectionDialog(self.qtapp, self.settings, self.onion)
-        tor_con.canceled.connect(self._tor_connection_canceled)
-        tor_con.open_settings.connect(self._tor_connection_open_settings)
-        tor_con.start()
+        self.tor_con = TorConnectionDialog(self.qtapp, self.settings, self.onion)
+        self.tor_con.canceled.connect(self._tor_connection_canceled)
+        self.tor_con.open_settings.connect(self._tor_connection_open_settings)
+        self.tor_con.start()
 
         # After connecting to Tor, check for updates
         self.check_for_updates()
@@ -394,17 +394,11 @@ class OnionShareGui(QtWidgets.QMainWindow):
         """
         self.update()
 
-        # Have we lost connection to Tor somehow?
-        try:
-            # Tor Browser may not even have been open when we started OnionShare,
-            # in which case onion.is_authenticated() throws a NoneType error
-            self.onion
-            if not self.onion.is_authenticated():
-                self.timer.stop()
-                self.start_server_error(strings._('error_tor_protocol_error'))
-                self._tor_connection_canceled()
-        except:
-            pass
+        # Has the Tor Connection dialog finished, but we've since lost connection to Tor somehow?
+        if not self.onion.is_authenticated() and self.tor_con.t.isFinished():
+            self.timer.stop()
+            self.start_server_error(strings._('error_tor_protocol_error'))
+            self._tor_connection_canceled()
 
         # scroll to the bottom of the dl progress bar log pane
         # if a new download has been added

onionshare_gui/settings_dialog.py

@@ -459,31 +459,26 @@ class SettingsDialog(QtWidgets.QDialog):
         # If Tor isn't connected, or if Tor settings have changed, Reinitialize
         # the Onion object
         reboot_onion = False
-        try:
-            self.onion
-            if self.onion.is_authenticated():
-                def changed(s1, s2, keys):
-                    """
-                    Compare the Settings objects s1 and s2 and return true if any values
-                    have changed for the given keys.
-                    """
-                    for key in keys:
-                        if s1.get(key) != s2.get(key):
-                            return True
-                    return False
+        if self.onion.is_authenticated():
+            def changed(s1, s2, keys):
+                """
+                Compare the Settings objects s1 and s2 and return true if any values
+                have changed for the given keys.
+                """
+                for key in keys:
+                    if s1.get(key) != s2.get(key):
+                        return True
+                return False
 
-                if changed(settings, self.old_settings, [
-                    'connection_type', 'control_port_address',
-                    'control_port_port', 'socks_address', 'socks_port',
-                    'socket_file_path', 'auth_type', 'auth_password']):
+            if changed(settings, self.old_settings, [
+                'connection_type', 'control_port_address',
+                'control_port_port', 'socks_address', 'socks_port',
+                'socket_file_path', 'auth_type', 'auth_password']):
 
-                    reboot_onion = True
-
-            else:
-                # Tor isn't connected, so try connecting
                 reboot_onion = True
-        except:
-            # We definitely aren't connected, as the onion object had no attribute is_authenticated()
+
+        else:
+            # Tor isn't connected, so try connecting
             reboot_onion = True
 
         # Do we need to reinitialize Tor?
@@ -497,7 +492,7 @@ class SettingsDialog(QtWidgets.QDialog):
 
             common.log('SettingsDialog', 'save_clicked', 'Onion done rebooting, connected to Tor: {}'.format(self.onion.connected_to_tor))
 
-            if self.onion.connected_to_tor and not tor_con.wasCanceled():
+            if self.onion.is_authenticated() and not tor_con.wasCanceled():
                 self.settings_saved.emit()
                 self.close()
 
@@ -510,7 +505,7 @@ class SettingsDialog(QtWidgets.QDialog):
         Cancel button clicked.
         """
         common.log('SettingsDialog', 'cancel_clicked')
-        if not self.onion.connected_to_tor:
+        if not self.onion.is_authenticated():
             Alert(strings._('gui_tor_connection_canceled', True), QtWidgets.QMessageBox.Warning)
             sys.exit()
         else:
@@ -565,7 +560,7 @@ class SettingsDialog(QtWidgets.QDialog):
         common.log('SettingsDialog', 'closeEvent')
 
         # On close, if Tor isn't connected, then quit OnionShare altogether
-        if not self.onion.connected_to_tor:
+        if not self.onion.is_authenticated():
             common.log('SettingsDialog', 'closeEvent', 'Closing while not connected to Tor')
 
             # Wait 1ms for the event loop to finish, then quit

onionshare_gui/tor_connection_dialog.py

@@ -57,12 +57,12 @@ class TorConnectionDialog(QtWidgets.QProgressDialog):
     def start(self):
         common.log('TorConnectionDialog', 'start')
 
-        t = TorConnectionThread(self, self.settings, self.onion)
-        t.tor_status_update.connect(self._tor_status_update)
-        t.connected_to_tor.connect(self._connected_to_tor)
-        t.canceled_connecting_to_tor.connect(self._canceled_connecting_to_tor)
-        t.error_connecting_to_tor.connect(self._error_connecting_to_tor)
-        t.start()
+        self.t = TorConnectionThread(self, self.settings, self.onion)
+        self.t.tor_status_update.connect(self._tor_status_update)
+        self.t.connected_to_tor.connect(self._connected_to_tor)
+        self.t.canceled_connecting_to_tor.connect(self._canceled_connecting_to_tor)
+        self.t.error_connecting_to_tor.connect(self._error_connecting_to_tor)
+        self.t.start()
 
         # The main thread needs to remain active, and checkign for Qt events,
         # until the thread is finished. Otherwise it won't be able to handle
@@ -126,7 +126,7 @@ class TorConnectionThread(QtCore.QThread):
         # Connect to the Onion
         try:
             self.onion.connect(self.settings, False, self._tor_status_update)
-            if self.onion.connected_to_tor:
+            if self.onion.is_authenticated():
                 self.connected_to_tor.emit()
             else:
                 self.canceled_connecting_to_tor.emit()