Refactor: fix socket leak, deduplicate stat/path logic, simplify config

- get_local_ip: use context manager to prevent socket leak
- _route_files: single stat() per file instead of two
- _safe_path helper: DRY path resolution for download/delete
- load_config: loop over vars(args) instead of 6 repetitive blocks
- Remove stale comment from index.html

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

share.py

@@ -39,11 +39,9 @@ def cleanup_loop(upload_dir: Path, max_age: int):
 
 def get_local_ip():
     try:
-        s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
-        s.connect(("8.8.8.8", 80))
-        ip = s.getsockname()[0]
-        s.close()
-        return ip
+        with socket.socket(socket.AF_INET, socket.SOCK_DGRAM) as s:
+            s.connect(("8.8.8.8", 80))
+            return s.getsockname()[0]
     except Exception:
         return "127.0.0.1"
 
@@ -158,15 +156,19 @@ class Handler(http.server.BaseHTTPRequestHandler):
         self._respond(self.server.html, "text/html; charset=utf-8")
 
     def _route_files(self):
-        files = []
-        for p in sorted(self.server.upload_dir.iterdir(), key=lambda p: p.stat().st_mtime, reverse=True):
+        entries = []
+        for p in self.server.upload_dir.iterdir():
             if p.is_file():
-                files.append({"name": p.name, "size": p.stat().st_size, "type": _file_type(p)})
-        self._json(files)
+                entries.append((p, p.stat()))
+        entries.sort(key=lambda e: e[1].st_mtime, reverse=True)
+        self._json([{"name": p.name, "size": st.st_size, "type": _file_type(p)} for p, st in entries])
+
+    def _safe_path(self, prefix_len: int) -> Path:
+        name = urllib.parse.unquote(self.path[prefix_len:])
+        return self.server.upload_dir / Path(name).name
 
     def _route_download(self):
-        name = urllib.parse.unquote(self.path[4:])
-        safe = self.server.upload_dir / Path(name).name
+        safe = self._safe_path(4)
         if not safe.is_file():
             self.send_error(404)
             return
@@ -191,8 +193,7 @@ class Handler(http.server.BaseHTTPRequestHandler):
         self._json({"ok": True, "count": count})
 
     def _route_delete(self):
-        name = urllib.parse.unquote(self.path[5:])
-        safe = self.server.upload_dir / Path(name).name
+        safe = self._safe_path(5)
         if safe.is_file():
             safe.unlink()
         self._json({"ok": True})
@@ -260,18 +261,9 @@ def load_config() -> dict:
     p.add_argument("--refresh", type=int)
     args = p.parse_args()
 
-    if args.port is not None:
-        conf["port"] = str(args.port)
-    if args.dir is not None:
-        conf["dir"] = args.dir
-    if args.ttl is not None:
-        conf["ttl"] = str(args.ttl)
-    if args.san is not None:
-        conf["san"] = " ".join(args.san)
-    if args.lang is not None:
-        conf["lang"] = args.lang
-    if args.refresh is not None:
-        conf["refresh"] = str(args.refresh)
+    for key, val in vars(args).items():
+        if val is not None:
+            conf[key] = " ".join(val) if isinstance(val, list) else str(val)
 
     return conf
 

static/index.html

@@ -259,8 +259,6 @@ $('lang-sw').addEventListener('click', e => {
   if (e.target.dataset.l) setLang(e.target.dataset.l);
 });
 
-/* File type is determined server-side via /files API ("text" | "image" | "other") */
-
 /* ── Helpers ── */
 
 let toastTimer;