system/ui: add minimum WIFI password length validation (#35190)

* add minimum WIFI password length validation

* add min text size to keyboard

* disable enter if text size<min size

* add MAX_PASSWORD_LENGTH

* disable enter key

* set min_text_size for demo

system/ui/widgets/keyboard.py

@@ -45,9 +45,10 @@ keyboard_layouts = {
 
 
 class Keyboard:
-  def __init__(self, max_text_size: int = 255):
+  def __init__(self, max_text_size: int = 255, min_text_size: int = 0):
     self._layout = keyboard_layouts["lowercase"]
     self._max_text_size = max_text_size
+    self._min_text_size = min_text_size
     self._input_box = InputBox(max_text_size)
 
   @property
@@ -85,7 +86,8 @@ class Keyboard:
         key_rect = rl.Rectangle(start_x, row_y_start + row * (key_height + v_space), new_width, key_height)
         start_x += new_width
 
-        if gui_button(key_rect, key):
+        is_enabled = key != ENTER_KEY or len(self._input_box.text) >= self._min_text_size
+        if gui_button(key_rect, key, is_enabled=is_enabled):
           if key == ENTER_KEY:
             return 1
           else:
@@ -110,7 +112,7 @@ class Keyboard:
 
 if __name__ == "__main__":
   gui_app.init_window("Keyboard")
-  keyboard = Keyboard()
+  keyboard = Keyboard(min_text_size=8)
   for _ in gui_app.render():
     result = keyboard.render("Keyboard", "Type here")
     if result == 1:

system/ui/widgets/network.py

@@ -11,6 +11,8 @@ from openpilot.system.ui.widgets.keyboard import Keyboard
 from openpilot.system.ui.widgets.confirm_dialog import confirm_dialog
 
 NM_DEVICE_STATE_NEED_AUTH = 60
+MIN_PASSWORD_LENGTH = 8
+MAX_PASSWORD_LENGTH = 64
 ITEM_HEIGHT = 160
 
 
@@ -46,7 +48,7 @@ class WifiManagerUI:
     self.state: UIState = StateIdle()
     self.btn_width = 200
     self.scroll_panel = GuiScrollPanel()
-    self.keyboard = Keyboard()
+    self.keyboard = Keyboard(max_text_size=MAX_PASSWORD_LENGTH, min_text_size=MIN_PASSWORD_LENGTH)
 
     self._networks: list[NetworkInfo] = []
 
@@ -66,7 +68,9 @@ class WifiManagerUI:
         if result == 1:
           password = self.keyboard.text
           self.keyboard.clear()
-          self.connect_to_network(network, password)
+
+          if len(password) >= MIN_PASSWORD_LENGTH:
+            self.connect_to_network(network, password)
         elif result == 0:
           self.state = StateIdle()