From e8f72c6fe65542b7461b6f32f9649a71fec1d9bd Mon Sep 17 00:00:00 2001
From: pax <paxxe@protonmail.com>
Date: Sat, 4 Apr 2026 21:11:01 -0500
Subject: [PATCH] =?UTF-8?q?Add=20Network=20tab=20to=20settings=20=E2=80=94?=
 =?UTF-8?q?=20shows=20all=20connected=20hosts?=
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Logs every outgoing connection (API requests and image downloads)
with timestamps. Network tab in Settings shows all hosts contacted
this session with request counts. No telemetry, just transparency.
---
 booru_viewer/core/api/base.py |  6 ++++++
 booru_viewer/core/cache.py    | 22 +++++++++++++++++++++-
 booru_viewer/gui/settings.py  | 34 ++++++++++++++++++++++++++++++++++
 3 files changed, 61 insertions(+), 1 deletion(-)

diff --git a/booru_viewer/core/api/base.py b/booru_viewer/core/api/base.py
index 8ea114a..036f517 100644
--- a/booru_viewer/core/api/base.py
+++ b/booru_viewer/core/api/base.py
@@ -9,6 +9,7 @@ from dataclasses import dataclass, field
 import httpx
 
 from ..config import USER_AGENT, DEFAULT_PAGE_SIZE
+from ..cache import log_connection
 
 log = logging.getLogger("booru")
 
@@ -53,9 +54,14 @@ class BooruClient(ABC):
                 headers={"User-Agent": USER_AGENT},
                 follow_redirects=True,
                 timeout=20.0,
+                event_hooks={"request": [self._log_request]},
             )
         return self._client
 
+    @staticmethod
+    async def _log_request(request: httpx.Request) -> None:
+        log_connection(str(request.url))
+
     async def close(self) -> None:
         if self._client and not self._client.is_closed:
             await self._client.aclose()
diff --git a/booru_viewer/core/cache.py b/booru_viewer/core/cache.py
index 40a518a..1297e1f 100644
--- a/booru_viewer/core/cache.py
+++ b/booru_viewer/core/cache.py
@@ -4,13 +4,32 @@ from __future__ import annotations
 
 import hashlib
 import zipfile
+from collections import OrderedDict
+from datetime import datetime
 from pathlib import Path
+from urllib.parse import urlparse
 
 import httpx
 from PIL import Image
 
 from .config import cache_dir, thumbnails_dir, USER_AGENT
 
+# Track all outgoing connections: {host: [timestamp, ...]}
+_connection_log: OrderedDict[str, list[str]] = OrderedDict()
+
+
+def log_connection(url: str) -> None:
+    host = urlparse(url).netloc
+    if host not in _connection_log:
+        _connection_log[host] = []
+    _connection_log[host].append(datetime.now().strftime("%H:%M:%S"))
+    # Keep last 50 entries per host
+    _connection_log[host] = _connection_log[host][-50:]
+
+
+def get_connection_log() -> dict[str, list[str]]:
+    return dict(_connection_log)
+
 
 def _url_hash(url: str) -> str:
     return hashlib.sha256(url.encode()).hexdigest()[:16]
@@ -110,7 +129,6 @@ async def download_image(
             local.unlink()  # Remove corrupt cache entry
 
     # Extract referer from URL domain (needed for Gelbooru CDN etc.)
-    from urllib.parse import urlparse
     parsed = urlparse(url)
     # Map CDN hostnames back to the main site
     referer_host = parsed.netloc
@@ -120,6 +138,8 @@ async def download_image(
         referer_host = "danbooru.donmai.us"
     referer = f"{parsed.scheme}://{referer_host}/"
 
+    log_connection(url)
+
     own_client = client is None
     if own_client:
         client = httpx.AsyncClient(
diff --git a/booru_viewer/gui/settings.py b/booru_viewer/gui/settings.py
index c2cfd90..b5e4ae5 100644
--- a/booru_viewer/gui/settings.py
+++ b/booru_viewer/gui/settings.py
@@ -53,6 +53,7 @@ class SettingsDialog(QDialog):
         self._tabs.addTab(self._build_blacklist_tab(), "Blacklist")
         self._tabs.addTab(self._build_paths_tab(), "Paths")
         self._tabs.addTab(self._build_theme_tab(), "Theme")
+        self._tabs.addTab(self._build_network_tab(), "Network")
 
         # Bottom buttons
         btns = QHBoxLayout()
@@ -338,6 +339,39 @@ class SettingsDialog(QDialog):
         layout.addStretch()
         return w
 
+    # -- Network tab --
+
+    def _build_network_tab(self) -> QWidget:
+        from ..core.cache import get_connection_log
+        w = QWidget()
+        layout = QVBoxLayout(w)
+
+        layout.addWidget(QLabel(
+            "All hosts contacted this session. booru-viewer only connects\n"
+            "to the booru sites you configure — no telemetry or analytics."
+        ))
+
+        self._net_list = QListWidget()
+        self._net_list.setAlternatingRowColors(True)
+        layout.addWidget(self._net_list)
+
+        refresh_btn = QPushButton("Refresh")
+        refresh_btn.clicked.connect(self._refresh_network)
+        layout.addWidget(refresh_btn)
+
+        self._refresh_network()
+        return w
+
+    def _refresh_network(self) -> None:
+        from ..core.cache import get_connection_log
+        self._net_list.clear()
+        log = get_connection_log()
+        if not log:
+            self._net_list.addItem("No connections made yet")
+            return
+        for host, times in log.items():
+            self._net_list.addItem(f"{host}  ({len(times)} requests, last: {times[-1]})")
+
     def _edit_custom_css(self) -> None:
         from PySide6.QtGui import QDesktopServices
         from PySide6.QtCore import QUrl