fix: sanitize settings JSON, asyncio get_running_loop, Defender exclusion, _btn cleanup, ASCII Save label

Made-with: Cursor

proxy_chain_manager/config.py

@@ -75,6 +75,63 @@ class Settings:
         return app_data_dir() / "settings.json"
 
 
+def sanitize_settings(s: Settings) -> tuple[Settings, bool]:
+    """Clamp invalid values from hand-edited JSON. Returns (settings, changed)."""
+    changed = False
+    try:
+        cl = int(s.chain_length)
+        if not (1 <= cl <= 8):
+            s.chain_length = max(1, min(8, cl))
+            changed = True
+    except (TypeError, ValueError):
+        s.chain_length = 3
+        changed = True
+    try:
+        p = int(s.local_port)
+        if not (1 <= p <= 65535):
+            s.local_port = max(1, min(65535, p))
+            changed = True
+    except (TypeError, ValueError):
+        s.local_port = 18888
+        changed = True
+    try:
+        if int(s.health_check_seconds) < 10:
+            s.health_check_seconds = 10
+            changed = True
+    except (TypeError, ValueError):
+        s.health_check_seconds = 180
+        changed = True
+    try:
+        if int(s.full_refresh_seconds) < 60:
+            s.full_refresh_seconds = 60
+            changed = True
+    except (TypeError, ValueError):
+        s.full_refresh_seconds = 1800
+        changed = True
+    try:
+        if int(s.validation_concurrency) < 1:
+            s.validation_concurrency = 1
+            changed = True
+    except (TypeError, ValueError):
+        s.validation_concurrency = 64
+        changed = True
+    try:
+        if int(s.max_candidates) < 10:
+            s.max_candidates = 10
+            changed = True
+    except (TypeError, ValueError):
+        s.max_candidates = 400
+        changed = True
+    try:
+        if float(s.validation_timeout_seconds) < 2.0:
+            s.validation_timeout_seconds = 2.0
+            changed = True
+    except (TypeError, ValueError):
+        s.validation_timeout_seconds = 12.0
+        changed = True
+    return s, changed
+
+
 def normalize_listen_host(s: Settings) -> tuple[Settings, bool]:
     """Force loopback bind so LAN/DHCP IP changes (e.g. cloned VMs) never break the listener."""
     if s.local_host == LISTEN_HOST:
@@ -103,7 +160,9 @@ def load_settings() -> Settings:
         s.pinned_chain = []
     if not hasattr(s, "manual_exit_proxy") or not isinstance(s.manual_exit_proxy, str):
         s.manual_exit_proxy = ""
-    s, changed = normalize_listen_host(s)
+    s, ch1 = sanitize_settings(s)
+    s, ch2 = normalize_listen_host(s)
+    changed = ch1 or ch2
     if changed:
         try:
             p.write_text(json.dumps(asdict(s), indent=2), encoding="utf-8")
@@ -113,6 +172,7 @@ def load_settings() -> Settings:
 
 
 def save_settings(s: Settings) -> None:
+    s, _ = sanitize_settings(s)
     s, _ = normalize_listen_host(s)
     p = app_data_dir() / "settings.json"
     p.write_text(json.dumps(asdict(s), indent=2), encoding="utf-8")