Improved State Management integrated with the UI upgrades, to evaluate failed zombie systemwide connections. And then prompt the user if they'd like to evaluate them for re-use, or close it.

core/errors/translate_error.py

@@ -10,6 +10,7 @@ from core.utils.type_checker import type_checker
 
 
 from typing import Type, Optional
+import traceback
 
 ERROR_TO_UI_MESSAGE = {
     ProfileActivationError: "The profile could not be enabled",
@@ -18,7 +19,7 @@ ERROR_TO_UI_MESSAGE = {
     ProfileModificationError: "WireGuard configuration could not be attached.",
 }
 
-@type_checker
+
 def translate_error(error: Type[Exception], profile_id: int) -> Result:
     """Translate legacy core errors into actions and/or messages via Result Objects."""
     logger.error(str(error))
@@ -64,7 +65,22 @@ def translate_error(error: Type[Exception], profile_id: int) -> Result:
         return Result(valid=False, error_type=ResultError.MISSING_SOFTWARE, message=error_msg)
 
     else:
-        return Result(valid=False, error_type=ResultError.UNKNOWN, message="An unknown error occured.")
+        # Extract the traceback from the exception object
+        tb = error.__traceback__
+        
+        # extract_tb returns a list of frames; the LAST one [-1] is where the error happened
+        summary = traceback.extract_tb(tb)
+        if summary:
+            last_frame = summary[-1]
+            func_name = last_frame.name       # The function name
+            line_no = last_frame.lineno      # The line number
+            file_name = last_frame.filename  # The file path
+        else:
+            func_name, line_no, file_name = "Unknown", "Unknown", "Unknown"
+
+        error_msg = f"Error in {func_name} at {file_name}:{line_no} -> {str(error)}"
+        logger.error(error_msg)
+        return Result(valid=False, error_type=ResultError.UNKNOWN, message=error_msg)
 
 
 @type_checker

core/infrastructure/global_state.py

@@ -1,5 +1,6 @@
 from core.models.system.SystemState import SystemState
 from core.models.session.SessionState import SessionState
+from core.models.enum_models import ProtocolChoice
 
 from dataclasses import dataclass, field
 from typing import Optional
@@ -7,6 +8,7 @@ from typing import Optional
 @dataclass
 class GlobalState:
     systemwide_active: bool = False
+    protocol: ProtocolChoice = None
     firewalled: bool = False
     dns_set: bool = False
     systemwide_profile_id: Optional[int] = None
@@ -37,6 +39,7 @@ class ProfileStateRepository:
     def turn_off_system_connection(self):
         """Clear the system-wide memory cache."""
         self.global_state.systemwide_profile_id = None
+        self.global_state.protocol = None
         self.global_state.firewalled = False
         self.global_state.dns_set = False
         self.global_state.systemwide_active = False
@@ -45,6 +48,7 @@ class ProfileStateRepository:
     def sync_system_state(self, state: SystemState):
         """Called by SystemStateController to update memory cache."""
         self.global_state.systemwide_profile_id = state.profile_id
+        self.global_state.protocol = state.protocol
         self.global_state.firewalled = state.firewalled
         self.global_state.dns_set = state.dns_set
         if state.profile_id:

core/infrastructure/global_state_coordinator.py

@@ -1,11 +1,36 @@
+from core.services.networking.general_connection_tools.connection_enable import establish_connection
+from core.controllers.ConfigurationController import ConfigurationController
 from core.infrastructure.global_state import ProfileStateRepository
+from core.controllers.ProfileController import ProfileController
 from core.controllers.SystemStateController import SystemStateController
 from core.controllers.SessionStateController import SessionStateController
+from core.models.system.SystemState import SystemState
+from core.models.enum_models import ProtocolChoice
 from core.models.Result import Result, ResultError
+from core.services.networking.systemwide import killswitch
+from core.services.networking.systemwide.general_tools import interface_tools
+from core.services.networking.systemwide.general_tools.test_any_protocol import test_ip_systemwide_for_any_protocol
+from core.services.networking.general_connection_tools.cross_protocol import kill_any_protocol
+from core.services.networking.systemwide.wireguard.wg_firewall_dns import revert_dns
+from core.services.networking.systemwide.dns_tools.process_dns_result import quick_domain_dns_check
+from core.observers.Notifications import Notifications, EventType
+from essentials.observers.ConnectionObserver import ConnectionObserver
+from core.Constants import Constants
 from core.errors.logger import logger
 
+# generic
+from functools import partial
 
 
+SINGBOX_PROTOCOLS = (ProtocolChoice.HYSTERIA2, ProtocolChoice.VLESS)
+
+def verify_systemwide_state(current_state: SystemState) -> bool:
+    """Confirm a valid connection, to update GlobalState (for UI)"""
+    state_repo = ProfileStateRepository()
+    state_repo.sync_system_state(current_state)
+    state_repo.verified = True
+    Notifications.emit(EventType.SYSTEM_ENABLE, current_state.profile_id)
+
 def is_systemwide_on() -> bool:
     """Returns a boolean if systemwide is connected.  True is Yes, False is No"""
     state_repo = ProfileStateRepository()
@@ -36,6 +61,125 @@ def is_connected(profile_id: int) -> bool:
     return state_repo.is_profile_active(profile_id)
 
 
+def coordinate_evaluation(connection_observer: ConnectionObserver) -> Result:
+    """See if a connection can be salvaged.  If not, rip it down & start over."""
+
+    # Claimed JSON state:
+    if not SystemStateController.exists():
+        error_msg = "State vanished inbetween the previous error prompt and now.  That state is an external file, so that is technically possible, but a critical error."
+        logger.error(error_msg)
+        return Result(valid=False, error_type=ResultError.MISSING_DATA, message=error_msg)
+
+    json_state = SystemStateController.get()
+    protocol = json_state.protocol
+    profile_id = json_state.profile_id
+    firewalled = json_state.firewalled
+
+    logger.info("Extracted JSON state data")
+
+
+    # full profile:
+    profile = ProfileController.get(profile_id)
+    if not profile:
+        error_msg = "Critical Failure where the profile to evaluate the connection can't be found.  Resetting state."
+        logger.error(error_msg)
+        SystemStateController.dissolve()
+        killed_firewall = killswitch.disarm()
+        logger.info(f"killed_firewall: {killed_firewall.valid}")
+        reverted_dns = revert_dns()
+        logger.info(f"reverted_dns is {reverted_dns}")
+        return Result(valid=False, error_type=ResultError.INVALID_INPUT, message=error_msg)
+    logger.info("Got the relevant profile.  Doing a pre-flight check")
+
+    #-----------------------
+    # INTERFACE
+    #-----------------------
+    if protocol == ProtocolChoice.WIREGUARD:
+        interface_up = interface_tools.exists("wg")
+    elif protocol in SINGBOX_PROTOCOLS:
+        interface_up = interface_tools.exists(Constants.SINGBOX_TUN_IF)
+    else:
+        interface_up = False
+        logger.error("Unsupported protocol in systemwide state.")
+
+    # RULE OUT:
+    if not interface_up:
+        logger.info("Doing a new connection due to the interface being down")
+        return establish_connection(profile, ignore={}, connection_observer=connection_observer)
+
+    #-----------------------
+    # FIREWALL
+    #-----------------------
+    # Previously User requested Configuration requests
+    user_wants_firewall = ConfigurationController.get_firewall_setting()
+
+    # Wireguard is voluntary opt-in, so they might not have the script installed,
+    if not user_wants_firewall and protocol == ProtocolChoice.WIREGUARD:
+        firewall_on = False
+    # unless they explicitly opted out with WG, then check:
+    else:
+        if firewalled:
+            firewall_on = killswitch.status()
+        else:
+            firewall_on = False
+
+    #-----------------------
+    # # DNS
+    #-----------------------
+    if protocol == ProtocolChoice.WIREGUARD:
+        target_interface = "wg"
+    elif protocol in SINGBOX_PROTOCOLS:
+        target_interface = Constants.SINGBOX_TUN_IF
+    else:
+        target_interface = "GARBAGE_FALSE"
+        logger.error("Unsupported protocol in systemwide state.")
+
+    # this doesn't need sudo to run, and its just regular commands (no script setup):
+    dns_on = quick_domain_dns_check(target_interface=target_interface)
+
+    logger.info("Evaluation Data Gathered")
+
+    # ------------------
+    # DO API CALL & EVALUATE
+    # ------------------
+    test_result = test_ip_systemwide_for_any_protocol(profile_id=profile_id, protocol=protocol, connection_observer=connection_observer)
+
+    if not test_result.valid:
+        logger.info("IP address check was not valid, so we're doing a new connection.")
+        return establish_connection(profile, ignore={}, connection_observer=connection_observer)
+
+    if firewall_dns_in_line_with_expectations(firewalled=firewall_on, dns_set=dns_on, protocol=protocol):
+        logger.info("IP address is connected and firewall & DNS expectations match reality.  Update/Verify Global State that it's on")
+        verify_systemwide_state(current_state=json_state) # this notifies the UI
+        return Result(valid=True)
+
+    logger.error("Current connection did not meet the criteria to continue to use it as is.")
+    return establish_connection(profile, ignore={}, connection_observer=connection_observer)
+
+
+def firewall_dns_in_line_with_expectations(firewalled: bool, dns_set: bool, protocol: ProtocolChoice) -> bool:
+    """We assume the IP address is okay.  Is that enough?"""
+
+    if protocol != ProtocolChoice.WIREGUARD:
+        if firewalled and dns_set:
+            return True
+        else:
+            logger.info("Only wireguard is optional firewall/dns.")
+            return False
+
+    # Previously User requested Configuration requests
+    user_wants_firewall = ConfigurationController.get_firewall_setting()
+    user_wants_dns = ConfigurationController.get_dns_setting()
+
+    if user_wants_firewall and not firewalled:
+        return False
+
+    if user_wants_dns and not dns_set:
+        return False
+    
+    return True
+
+
 def evaluate_state_on_startup() -> Result:
     """When the app first starts, evaluate pre-existing state"""
 
@@ -44,9 +188,10 @@ def evaluate_state_on_startup() -> Result:
     #-----------------------
     systemwide_active = SystemStateController.get()
     if systemwide_active:
-        error_msg = "A pre-existing systemwide state is active."
+        error_msg = "The previous system-wide connection was not correctly turned off before the app was killed.  Do you want to evaluate it?  (no blindly kills it)"
-        logger.error(error_msg)
+        no_option = partial(kill_any_protocol, current_state=systemwide_active, active_protocol=systemwide_active.protocol)
-        return Result(valid=False, error_type=ResultError.STATE_CONFLICT, message=error_msg)
+        return Result(valid=False, no_option=no_option, error_type=ResultError.ZOMBIE_CONNECTION, message=error_msg)
+
 
     #-----------------------
     # SESSION
@@ -58,5 +203,3 @@ def evaluate_state_on_startup() -> Result:
             SessionStateController.remove(each_profile.id)
 
     return Result(valid=True)
-
-

core/infrastructure/plumbing.py

@@ -126,6 +126,13 @@ class ThreadPlumbing:
             self.attempt_count += 1
             self._spawn_action(passed_result.function_choice)
         else:
+            # if the result originally prescribed it's own "no option":
+            no_option = passed_result.no_option
+            if no_option:
+                no_option()
+                return
+
+            # otherwise do the original UI call:
             if self.ui_caller:
                 self.ui_caller(passed_result)
 
@@ -136,10 +143,12 @@ class ThreadPlumbing:
 
         self.navigator.request_navigation.emit(auto_navigate_page)
 
+
 def normalize_seq(s):
     """Ensures input is a tuple regardless of if it was a list or tuple."""
     return tuple(s) if s is not None else ()
 
+
 def resolve_prescription(result: Result, ENUM_MAP: dict, *args, **kwargs):
     """
     Find the correct solution to the type of enum problem,
@@ -181,7 +190,30 @@ def resolve_prescription(result: Result, ENUM_MAP: dict, *args, **kwargs):
     if not function_requirements:
         return func
 
-    # Priority 3: Use original args/kwargs
+    # Priority 3: Does it want the result itself?
+    if 'result' in function_requirements:
+        logger.info("result required; baking result into partial.")
+        
+        # 1. Prepare the arguments we have available right now
+        # Start with default_args from the ENUM_MAP if they exist
+        current_args = {}
+        if isinstance(default_args, dict):
+            current_args.update(default_args)
+            
+        # Inject the result object
+        current_args['result'] = result
+        
+        # 2. Use bind_partial so it doesn't fail if other args are still missing
+        bound = sig.bind_partial(**current_args)
+        
+        # 3. Fill in any function-defined defaults
+        bound.apply_defaults()
+        
+        # 4. Return the partial with the bound arguments
+        return partial(func, **bound.arguments)
+
+
+    # Priority 4: Use original args/kwargs
     try:
         bound = sig.bind(*args, **kwargs)
         bound.apply_defaults()
@@ -189,7 +221,7 @@ def resolve_prescription(result: Result, ENUM_MAP: dict, *args, **kwargs):
     except TypeError:
         pass  # Not enough, move to priority 4
 
-    # Priority 4: Use original args/kwargs PLUS defaults
+    # Priority 5: Use original args/kwargs PLUS defaults
     if default_args is None:
         return False
 

core/models/Result.py

@@ -24,6 +24,7 @@ class ResultError(Enum):
     EXPIRED_SUB = "expired_sub"
     ACTIVE_BILLING = "active_billing"
     STATE_CONFLICT = "state_conflict"
+    ZOMBIE_CONNECTION = "zombie_connection"
     TICKET = "ticket"
     NO_TICKET = "no_ticket"
     RANDOM_TICKETS_OFF = "random_tickets_off"
@@ -60,6 +61,7 @@ class Result():
     message: Optional[str] = None
     goal: Optional[str] = None
     function_choice: Optional[partial] = None
+    no_option: Optional[partial] = None
     navigate_to: Optional[str] = None
     
     def user_message(self) -> str:

core/models/system/SystemState.py

@@ -70,3 +70,16 @@ class SystemState:
     @staticmethod
     def __get_state_path():
         return Constants.HV_STATE_HOME
+
+
+
+# @dataclass
+# class StateEvaluation:
+#     interface: bool
+#     firewalled: bool
+#     dns_set: bool
+#     ip_address_correct: Optional[bool] = None
+#     firewall_killed_internet: Optional[bool] = None
+#     dns_killed_internet: Optional[bool] = None
+#     has_internet: Optional[bool] = None
+#     killed_vpn: Optional[bool] = None

core/services/networking/systemwide/dns_tools/process_dns_result.py

@@ -36,6 +36,7 @@ def process_ALL_dns_results(target_interface: str) -> Result:
 
     # ================= START LOOP =====================
     for each_command in list_of_commands:
+        if each_command:
             each_SearchResult = process_ONE_dns_result(
                 which_command=each_command,
                 target_interface=target_interface,
@@ -93,6 +94,15 @@ def orchestrate_dns_check(target_interface: str) -> Result:
         return Result(valid=False, data=target_not_found)
 
 
+def quick_domain_dns_check(target_interface: str) -> bool:
+    each_SearchResult = process_ONE_dns_result(
+        which_command="domain",
+        target_interface=target_interface,
+    )
+    if each_SearchResult.valid:
+        return True
+    else:
+        return False
 
 
 

core/services/networking/systemwide/general_tools/test_any_protocol.py

@@ -0,0 +1,64 @@
+
+from core.services.networking.general_connection_tools.config_tools import extract_endpoint_ip
+from core.services.networking.general_connection_tools import ip
+from essentials.observers.ConnectionObserver import ConnectionObserver
+from core.models.enum_models import ProtocolChoice
+from core.utils.basic_operations.write_or_read_from_json import get_value_from_json_file
+from core.models.Result import Result, ResultError
+from core.errors.logger import logger
+from core.Constants import Constants
+
+import os
+
+
+def get_singbox_ip(profile_id: int) -> str|None:
+    """Get the IP address for a Singbox based profile based on local disk."""
+    config_path = f'{Constants.HV_SYSTEM_PROFILE_CONFIG_PATH}/{profile_id}/proxy.json'
+    logger.info(f"config_path is {config_path}")
+
+    if not os.path.isfile(config_path):
+        return None
+
+    server_ip = get_value_from_json_file(filepath=config_path, category="outbounds", key="server")
+    return server_ip
+
+
+def test_ip_systemwide_for_any_protocol(profile_id: int, protocol: ProtocolChoice, connection_observer: ConnectionObserver) -> Result:
+    """Compare the real vs expected IP address."""
+
+    # protocol = profile.type
+    # profile_id = profile.id
+
+    # what's expected:
+    if protocol == ProtocolChoice.WIREGUARD:
+        expected_ip_address = extract_endpoint_ip(profile_id)
+    elif protocol in (ProtocolChoice.VLESS, ProtocolChoice.HYSTERIA2):
+        expected_ip_address = get_singbox_ip(profile_id=profile_id)
+    else:
+        expected_ip_address = None
+
+    if not expected_ip_address:
+        error_msg = "Could not get the expected IP address from local files."
+        logger.error(error_msg)
+        return Result(valid=False, error_type=ResultError.MISSING_DATA, message=error_msg)
+
+    # reality:
+    ip_result = ip.test(connection_observer)
+
+    if not ip_result.valid:
+        logger.error(ip_result.message)
+        return ip_result # result object
+
+    real_ip = ip_result.data
+
+    print(f"Expected: {expected_ip_address} Reality: {real_ip}")
+
+    if real_ip == expected_ip_address:
+        return Result(valid=True)
+    else:
+        error_msg = f"IP address does NOT match.  Expected: {expected_ip_address} vs Reality: {real_ip}"
+        return Result(valid=False, error_type=ResultError.LEAK_ISSUE, message=error_msg)
+
+
+
+

core/services/networking/systemwide/systemwide_wireguard.py

@@ -212,7 +212,7 @@ def __establish_system_connection(
         current_state.dns_set = did_dns_work
         SystemStateController.update_or_create(current_state)
 
-    Notifications.emit(EventType.SYSTEM_ENABLE, profile_id)
+    Notifications.emit(EventType.SYSTEM_ENABLE, profile.id)
     return Result(valid=True, data=current_state)
 
 

core/utils/type_checker.py

@@ -1,49 +1,107 @@
-from core.models.Result import Result
+from core.models.Result import Result, ResultError
 from core.errors.logger import logger
 
 
 import inspect
 from functools import wraps
-from typing import Any
+from typing import get_origin, get_args, Union
+import types  # Required for UnionType (the | operator)
+
+def _get_type_error_details(check_type, value, origin, args_types):
+    """
+    Helper to construct human-readable names for the expected and actual types.
+    """
+    # Case 1: User used Type[T] but passed an instance of T
+    if origin is type:
+        inner_name = getattr(args_types[0], '__name__', 'the specified type')
+        return f"a class/type (subclass of {inner_name})", f"an instance of {type(value).__name__}"
+    
+    # Case 2: check_type is a tuple (common for Unions)
+    if isinstance(check_type, tuple):
+        type_names = ", ".join([getattr(t, '__name__', str(t)) for t in check_type])
+        return f"one of ({type_names})", f"type {type(value).__name__}"
+    
+    # Case 3: Standard single type
+    type_name = getattr(check_type, '__name__', str(check_type))
+    return type_name, f"type {type(value).__name__}"
+
+def _validate_inner_types(value, origin, args_types, func, name):
+    """
+    Helper to handle deep validation for generics like List[int] or Type[T].
+    Returns (is_valid, error_message).
+    """
+    if not args_types:
+        return True, None
+
+    inner_type = args_types[0]
+
+    # Handle Type[T]: value must be a subclass of T
+    if origin is type:
+        if not issubclass(value, inner_type):
+            inner_name = getattr(inner_type, '__name__', str(inner_type))
+            return False, f"For function {func}, Argument '{name}' must be a subclass of {inner_name}, got {value.__name__}"
+        return True, None
+
+    # Handle Collections: list, set, tuple
+    if isinstance(value, (list, set, tuple)):
+        for item in value:
+            inner_origin = get_origin(inner_type)
+            
+            # Handle Unions inside collections (e.g., List[Union[int, str]])
+            if inner_origin is Union or (hasattr(types, "UnionType") and inner_origin is types.UnionType):
+                if not isinstance(item, get_args(inner_type)):
+                    return False, f"For function {func}, Argument '{name}' contains element {type(item).__name__}, expected {inner_type}"
+            # Handle standard types inside collections
+            elif not isinstance(item, inner_type):
+                inner_name = getattr(inner_type, '__name__', str(inner_type))
+                return False, f"For function {func}, Argument '{name}' contains element {type(item).__name__}, expected {inner_name}"
+    
+    return True, None
 
 def type_checker(func):
-    """
-    Type check wrapper.
-    This type checks individual functions it's put on, and returns a Result object on failure.
-    """
     @wraps(func)
     def wrapper(*args, **kwargs):
-        # 1. Introspect the wrapped function
         sig = inspect.signature(func)
         
+        # 1. Bind arguments to names to handle both positional and keyword args
         try:
-            # Bind the provided args/kwargs to the function's signature
             bound_args = sig.bind(*args, **kwargs)
             bound_args.apply_defaults()
         except TypeError as e:
-            # This handles cases where the wrong number of arguments are passed
             error_msg = f"For {func}, {str(e)}"
             logger.error(error_msg)
             return Result(valid=False, error_type=ResultError.INVALID_INPUT, message=error_msg)
 
-        # 2. Perform type validation
+        # 2. Validate each argument against its type hint
         for name, value in bound_args.arguments.items():
             expected_type = sig.parameters[name].annotation
             
-            # Skip parameters that don't have a type hint
+            # Skip if no type hint is provided
             if expected_type is inspect.Parameter.empty:
                 continue
             
-            if not isinstance(value, expected_type):
+            origin = get_origin(expected_type)
-                error_msg = f"For function {func}, Argument '{name}' must be {expected_type.__name__}, got type {type(value).__name__}"
+            args_types = get_args(expected_type)
+            
+            # Determine the type to use for isinstance() 
+            # Handles both typing.Union and the Python 3.10+ | operator (UnionType)
+            is_union = origin is Union or (hasattr(types, "UnionType") and origin is types.UnionType)
+            check_type = args_types if is_union else (origin if origin is not None else expected_type)
+            
+            # Basic type validation
+            if not isinstance(value, check_type):
+                type_name, actual_name = _get_type_error_details(check_type, value, origin, args_types)
+                error_msg = f"For function {func}, Argument '{name}' must be {type_name}, got {actual_name}"
                 logger.error(error_msg)
-                return Result(
+                return Result(valid=False, error_type=ResultError.INVALID_INPUT, message=error_msg)
-                    valid=False,
+            
-                    error_type=ResultError.INVALID_INPUT,
+            # Deep validation for generics (e.g., List[int], Type[MyClass])
-                    message=error_msg
+            # We only do this if it's not a Union, as Unions were handled by the basic isinstance check above
-                )
+            if origin is not None and not is_union:
+                is_valid, error_msg = _validate_inner_types(value, origin, args_types, func, name)
+                if not is_valid:
+                    logger.error(error_msg)
+                    return Result(valid=False, error_type=ResultError.INVALID_INPUT, message=error_msg)
 
-        # 3. If all checks pass, call the original function
         return func(*args, **kwargs)
-        
     return wrapper