Respect DNT header

Difficult euroring parsing was made by GPT too. Its realisation is
horror

blueprints/risdeveau/templates/88x31.pug

@@ -3,6 +3,9 @@ div
     a.disabled(href="https://chest.lair.moe")
       img(src="/static/img/88x31/gf.png")
 
+    a(href="//lair.moe")
+      img(src="/static/img/88x31/lair.gif")
+
     a#pie(href="https://preview.about.akarpov.ru")
       img(src="/static/img/88x31/withpie.gif")
 

blueprints/risdeveau/templates/contacts.pug

@@ -2,7 +2,7 @@
   h3 Development
   .blocks.badges
     a.block(href="//g.lair.moe/Sweetbread")
-      img.icon(src="/static/icon/service/gitea.webp")
+      img.icon(src="/static/img/service/gitea.webp")
       |  Gitea
 
     a.block(href="https://github.com/VerySweetBread")
@@ -20,7 +20,7 @@
       |  Matrix
 
     a.block(href="//b.lair.moe/@risdeveau")
-      img.icon(src="/static/icon/service/sharkey.webp")
+      img.icon(src="/static/img/service/sharkey.webp")
       |  Fediverse
 
     a.block(href="https://discord.com/users/459823895256498186")

blueprints/risdeveau/templates/index.pug

@@ -7,14 +7,15 @@ html(lang="en")
     each f in ('tw', 'main', 'risdeveau')
       link(rel="stylesheet", href="/static/style/#{f}.css")
 
-    link(rel="icon" type="image/webp" href="/static/icon/us/risdeveau.webp")
+    link(rel="icon" type="image/webp" href="/static/img/us/risdeveau.webp")
 
     script(src="/static/script/rtime.js")
-    script(
+    if request.headers.get('DNT') != "1":
-      src="https://track.lair.moe/api/script.js"
+      script(
-      data-site-id="1"
+        src="https://track.lair.moe/api/script.js"
-      defer
+        data-site-id="1"
-    )
+        defer
+      )
     script(
       src="https://cdn.jsdelivr.net/npm/htmx.org@2.0.8/dist/htmx.min.js"
       integrity="sha384-/TgkGk7p307TH7EXJDuUlgG3Ce1UVolAOFopFekQkkXihi5u/6OCvVKyz1W+idaz"

blueprints/root/__init__.py

@@ -1,6 +1,8 @@
 from htmlmin import minify
 from flask import Blueprint, render_template, request, jsonify
 
+from .modules.euroring import data as euroring_data, refresh_cache as euroring_refresh
+
 bp = Blueprint(
     "root",
     __name__,
@@ -9,8 +11,9 @@ bp = Blueprint(
 )
 
 def render_tmpl(filename: str) -> str:
+    euroring_refresh()
     return minify(
-        render_template(filename),
+        render_template(filename, euroring=euroring_data),
         remove_empty_space=True
     )
 

blueprints/root/modules/euroring.py

@@ -0,0 +1,256 @@
+from __future__ import annotations
+
+import atexit
+import json
+import os
+import re
+import tempfile
+from time import time
+from urllib.parse import urlsplit
+
+import fcntl
+import requests
+from apscheduler.schedulers.background import BackgroundScheduler
+from apscheduler.triggers.interval import IntervalTrigger
+
+
+def _cache_dir() -> str:
+    path = os.environ.get("LAIR_CACHE_DIR", "/tmp/lair-cache")
+    os.makedirs(path, exist_ok=True)
+    return path
+
+
+def _cache_file(name: str) -> str:
+    return os.path.join(_cache_dir(), f"{name}.json")
+
+
+def _atomic_write_json(path: str, payload: dict) -> None:
+    parent = os.path.dirname(path) or "."
+    fd, tmp = tempfile.mkstemp(prefix=".tmp-", dir=parent)
+    try:
+        with os.fdopen(fd, "w", encoding="utf-8") as f:
+            json.dump(payload, f, ensure_ascii=False, separators=(",", ":"))
+        os.replace(tmp, path)
+    finally:
+        try:
+            if os.path.exists(tmp):
+                os.unlink(tmp)
+        except Exception:
+            pass
+
+
+_CACHE_MTIME = 0.0
+_LOCK_FD: int | None = None
+
+
+def _load_json_if_newer(path: str, last_mtime: float) -> tuple[dict | None, float]:
+    try:
+        stat = os.stat(path)
+    except FileNotFoundError:
+        return None, last_mtime
+    except Exception:
+        return None, last_mtime
+
+    mtime = float(stat.st_mtime)
+    if mtime <= float(last_mtime):
+        return None, last_mtime
+
+    try:
+        with open(path, "r", encoding="utf-8") as f:
+            return json.load(f), mtime
+    except Exception:
+        return None, last_mtime
+
+
+def _should_start_scheduler() -> bool:
+    global _LOCK_FD
+    if _LOCK_FD is not None:
+        return True
+
+    lock_path = os.environ.get("LAIR_SCHED_LOCK", "/tmp/lair-scheduler.lock")
+    fd = os.open(lock_path, os.O_CREAT | os.O_RDWR, 0o644)
+
+    try:
+        fcntl.flock(fd, fcntl.LOCK_EX | fcntl.LOCK_NB)
+        _LOCK_FD = fd
+        return True
+    except BlockingIOError:
+        os.close(fd)
+        return False
+    except Exception:
+        try:
+            os.close(fd)
+        finally:
+            return False
+
+
+EURORING_SOURCE_URL = "https://euroring.neocities.org/scripts/onionring-variables.js"
+EURORING_SITE_URL = "https://lair.moe"
+EURORING_TIMEOUT = float(os.environ.get("EURORING_TIMEOUT", "10"))
+
+
+data = {
+    "enabled": bool(EURORING_SOURCE_URL and EURORING_SITE_URL),
+    "status": "disabled",
+    "source_url": EURORING_SOURCE_URL,
+    "site_url": EURORING_SITE_URL,
+    "ring_name": "",
+    "index_url": None,
+    "prev_url": None,
+    "next_url": None,
+    "count": 0,
+    "last_updated": 0,
+}
+
+_IS_WRITER = _should_start_scheduler()
+_CACHE_PATH = _cache_file("webring")
+
+
+def _site_key(url: str) -> tuple[str, int | None, str, str]:
+    parts = urlsplit(url.strip())
+    hostname = (parts.hostname or "").lower()
+    port = parts.port
+    path = re.sub(r"/+$", "", parts.path or "")
+    query = parts.query or ""
+    return hostname, port, path, query
+
+
+def _parse_js_string_value(text: str, variable: str) -> str | None:
+    match = re.search(
+        rf"var\s+{re.escape(variable)}\s*=\s*(['\"])(.*?)\1\s*;",
+        text,
+        re.S,
+    )
+    if not match:
+        return None
+    return match.group(2).strip()
+
+
+def _parse_bool_value(text: str, variable: str) -> bool | None:
+    match = re.search(rf"var\s+{re.escape(variable)}\s*=\s*(true|false)\s*;", text)
+    if not match:
+        return None
+    return match.group(1) == "true"
+
+
+def _parse_sites(text: str) -> list[str]:
+    match = re.search(r"var\s+sites\s*=\s*\[(.*?)\]\s*;", text, re.S)
+    if not match:
+        raise ValueError("sites array not found")
+
+    sites_block = match.group(1)
+    sites: list[str] = []
+
+    for raw_line in sites_block.splitlines():
+        line = raw_line.strip()
+        if not line or line.startswith("//"):
+            continue
+
+        site_match = re.match(
+            r"(?P<quote>['\"])(?P<url>.*?)(?P=quote)\s*,?\s*(?://.*)?$",
+            line,
+        )
+        if site_match:
+            sites.append(site_match.group("url").strip())
+
+    if not sites:
+        raise ValueError("sites array is empty")
+
+    return sites
+
+
+def _compute_ring_payload(text: str) -> dict:
+    sites = _parse_sites(text)
+    target_key = _site_key(EURORING_SITE_URL)
+
+    current_index = None
+    for i, site in enumerate(sites):
+        if _site_key(site) == target_key:
+            current_index = i
+            break
+
+    if current_index is None:
+        raise ValueError(f"site not found in ring: {EURORING_SITE_URL}")
+
+    ring_name = _parse_js_string_value(text, "ringName") or "Webring"
+    use_index = _parse_bool_value(text, "useIndex")
+    index_url = _parse_js_string_value(text, "indexPage") if use_index else None
+
+    return {
+        "enabled": True,
+        "status": "success",
+        "source_url": EURORING_SOURCE_URL,
+        "site_url": EURORING_SITE_URL,
+        "ring_name": ring_name,
+        "index_url": index_url,
+        "prev_url": sites[(current_index - 1) % len(sites)],
+        "next_url": sites[(current_index + 1) % len(sites)],
+        "count": len(sites),
+        "last_updated": time(),
+    }
+
+
+def refresh_cache() -> None:
+    global _CACHE_MTIME
+    if _IS_WRITER:
+        return
+
+    payload, mtime = _load_json_if_newer(_CACHE_PATH, _CACHE_MTIME)
+    if payload is None:
+        return
+
+    data.update(payload)
+    _CACHE_MTIME = mtime
+
+
+def _persist_cache() -> None:
+    if not _IS_WRITER:
+        return
+    _atomic_write_json(_CACHE_PATH, data)
+
+
+def fetch_webring() -> None:
+    if not data["enabled"]:
+        return
+
+    previous_state = dict(data)
+
+    try:
+        response = requests.get(EURORING_SOURCE_URL, timeout=EURORING_TIMEOUT)
+        response.raise_for_status()
+        payload = _compute_ring_payload(response.text)
+        data.update(payload)
+    except Exception as exc:
+        data.update({
+            "enabled": True,
+            "status": f"error: {exc}",
+            "source_url": EURORING_SOURCE_URL,
+            "site_url": EURORING_SITE_URL,
+            "ring_name": data.get("ring_name") or "Webring",
+            "index_url": data.get("index_url"),
+            "prev_url": data.get("prev_url"),
+            "next_url": data.get("next_url"),
+            "count": data.get("count", 0),
+            "last_updated": data.get("last_updated", 0),
+        })
+
+    if data != previous_state:
+        _persist_cache()
+
+
+if data["enabled"]:
+    scheduler = BackgroundScheduler()
+
+    if _IS_WRITER:
+        scheduler.add_job(
+            func=fetch_webring,
+            trigger=IntervalTrigger(days=1),
+            id="root.webring.refresh",
+            replace_existing=True,
+        )
+        _persist_cache()
+        scheduler.start()
+        fetch_webring()
+        atexit.register(lambda: scheduler.shutdown())
+    else:
+        refresh_cache()

blueprints/root/static/style/main.scss

@@ -185,6 +185,8 @@ footer {
   display: flex;
   justify-content: center;
 
+  & + & { margin-top: .25rem; }
+
   a {
     padding: .5rem 1rem;
     margin: .1rem !important;

blueprints/root/templates/base.pug

@@ -4,21 +4,24 @@ html(lang=g.locale)
     title Lair
 
     link(rel="stylesheet" href="/static/style/main.css")
-    link(rel="icon" type="image/webp" href="/static/icon/lair.webp")
+    link(rel="icon" type="image/webp" href="/static/img/lair.webp")
 
     script(src="/static/script/copy-mono.js")
-    script(
+
-      src="https://track.lair.moe/api/script.js"
+    if request.headers.get('DNT') != "1":
-      data-site-id="1"
+      script(
-      defer
+        src="https://track.lair.moe/api/script.js"
-    )
+        data-site-id="1"
+        defer
+      )
+
     meta(name="viewport" content="width=device-width, initial-scale=1.0")
     meta(name="mock-email" content="admin@example.com")
 
     meta(property="og:type" value="website")
     meta(property="og:url" value="https://lair.moe")
     meta(property="og:title" value="Lair.moe")
-    meta(property="og:image" value="https://lair.moe/static/icon/lair.webp")
+    meta(property="og:image" value="https://lair.moe/static/img/lair.webp")
     meta(property="og:description" value=_("description"))
 
   body

blueprints/root/templates/index.pug

@@ -1,19 +1,19 @@
 extends root/templates/base.pug
 
 block title
-  img.icon(src="/static/icon/lair.webp")
+  img.icon(src="/static/img/lair.webp")
   |  Lair
 
 block content
   a.block(href="https://b.lair.moe" target="_blank")
     .header
-      img.icon(src="/static/icon/service/sharkey.webp")
+      img.icon(src="/static/img/service/sharkey.webp")
       strong Sharkey
     p= _('index.descr:sharkey')
 
   a.block(href="https://g.lair.moe" target="_blank")
     .header
-      img.icon(src="/static/icon/service/gitea.webp")
+      img.icon(src="/static/img/service/gitea.webp")
       strong Gitea
     p= _('index.descr:gitea')
 
@@ -68,3 +68,22 @@ block content
       strong Yggdrasil
       | : 
       span.mono 200:ee1:bad2:1732:4b91:c3e3:2f08:29b3
+
+  .webring
+    a.block(href="https://nixwebr.ing/prev/lair" rel="external prev") ←
+    a.block(href="https://nixwebr.ing/" rel="external") Nix webring
+    a.block(href="https://nixwebr.ing/next/lair" rel="external next") →
+
+  .webring
+    a.block(href="https://ctp-webr.ing/lair/previous" rel="external prev") ←
+    a.block(href="https://ctp-webr.ing/" rel="external") Catppuccin webring
+    a.block(href="https://ctp-webr.ing/lair/next" rel="external next") →
+
+  if euroring.prev_url and euroring.next_url
+    .webring
+      a.block(href=euroring.prev_url rel="external prev") ←
+      if euroring.index_url
+        a.block(href=euroring.index_url rel="external") Euroring
+      else
+        span.block= euroring.ring_name
+      a.block(href=euroring.next_url rel="external next") →

blueprints/root/templates/us.pug

@@ -6,12 +6,12 @@ block title
 block content
   a.block.green(href=url_for('risdeveau.index'))
     .header
-      img.icon(src="/static/icon/us/risdeveau.webp")
+      img.icon(src="/static/img/us/risdeveau.webp")
       | Sweetbread
     | Главный админ, занимается почти всеми сервисами. Создал этот сайт
 
   .block.orange.disabled
     .header
-      img.icon(src="/static/icon/us/chest.webp")
+      img.icon(src="/static/img/us/chest.webp")
       | Chest
     | Должна была помогать делать этот сайт