refactor: brand logo customization and emoji font selection

This commit is contained in:
3252a8
2026-05-13 14:02:35 +03:00
parent e21a0758c3
commit eec5635541
19 changed files with 895 additions and 155 deletions
+286 -13
View File
@@ -63,6 +63,8 @@ logger = logging.getLogger(__name__)
TEMPLATE_PATH = Path(__file__).resolve().parent / "templates" / "subscription_webapp.html"
ASSET_DIR = TEMPLATE_PATH.parent
WEBAPP_LOGO_PROXY_PATH = "/webapp-logo"
WEBAPP_LOGO_CACHE_DIR = Path(__file__).resolve().parents[3] / "data" / "webapp-logo"
WEBAPP_EMOJI_CACHE_DIR = Path(__file__).resolve().parents[3] / "data" / "webapp-emoji"
WEBAPP_CONFIG_PLACEHOLDER = "<!-- WEBAPP_CONFIG_SCRIPT -->"
WEBAPP_I18N_PLACEHOLDER = "<!-- WEBAPP_I18N_SCRIPT -->"
WEBAPP_JS_PLACEHOLDER = "<!-- WEBAPP_JS_SCRIPT -->"
@@ -72,6 +74,7 @@ DEV_MOCK_END_MARKER = "<!-- WEBAPP_DEV_MOCK_END -->"
WEBAPP_RATE_LIMIT_WINDOW_SECONDS = 60
WEBAPP_RATE_LIMIT_MAX_REQUESTS = 30
WEBAPP_LOGO_MAX_BYTES = 2 * 1024 * 1024
WEBAPP_EMOJI_MAX_BYTES = 4 * 1024 * 1024
WEBAPP_TELEGRAM_AVATAR_MAX_BYTES = 128 * 1024
WEBAPP_TELEGRAM_AVATAR_REFRESH_SECONDS = 24 * 60 * 60
WEBAPP_TELEGRAM_AVATAR_FETCH_TIMEOUT_SECONDS = 4
@@ -179,6 +182,8 @@ def create_subscription_webapp_application(
async def _startup(app_obj: web.Application) -> None:
await _ensure_shared_http_session()
await _warm_webapp_logo_cache(app_obj)
await _warm_webapp_animated_emoji_cache(app_obj)
async def _shutdown(app_obj: web.Application) -> None:
await _close_shared_http_session()
@@ -220,6 +225,10 @@ def setup_subscription_webapp_routes(app: web.Application) -> None:
app.router.add_get("/auth/telegram/callback", telegram_oauth_callback_route)
app.router.add_get("/health", health_route)
app.router.add_get(WEBAPP_LOGO_PROXY_PATH, webapp_logo_route)
app.router.add_get(
r"/webapp-emoji/{codepoints:[0-9a-f_]+}/512.{ext:gif|webp}",
webapp_animated_emoji_route,
)
app.router.add_get("/subscription_webapp.css", css_asset_route)
app.router.add_get("/subscription_webapp.min.{asset_hash}.js", js_asset_route)
app.router.add_get("/subscription_webapp.js", js_asset_route)
@@ -264,7 +273,8 @@ def _resolve_webapp_logo_url(settings: Settings) -> str:
parsed_logo_url = urlsplit(raw_logo_url)
if parsed_logo_url.scheme == "https":
return WEBAPP_LOGO_PROXY_PATH
cache_key = hashlib.sha256(raw_logo_url.encode("utf-8")).hexdigest()[:12]
return f"{WEBAPP_LOGO_PROXY_PATH}?v={cache_key}"
if parsed_logo_url.scheme in {"http", "data"}:
return raw_logo_url
if raw_logo_url.startswith("/"):
@@ -272,6 +282,39 @@ def _resolve_webapp_logo_url(settings: Settings) -> str:
return ""
def _webapp_logo_cache_key(logo_url: str) -> str:
return hashlib.sha256(logo_url.encode("utf-8")).hexdigest()
def _webapp_logo_disk_paths(logo_url: str) -> Tuple[Path, Path]:
cache_key = _webapp_logo_cache_key(logo_url)
return WEBAPP_LOGO_CACHE_DIR / f"{cache_key}.bin", WEBAPP_LOGO_CACHE_DIR / f"{cache_key}.json"
def _is_proxyable_webapp_logo_url(logo_url: str) -> bool:
parsed_logo_url = urlsplit(logo_url)
return parsed_logo_url.scheme == "https" and bool(parsed_logo_url.hostname)
def _emoji_to_codepoints(value: str) -> str:
return "_".join(f"{ord(char):x}" for char in str(value or "").strip())
def _webapp_emoji_disk_path(codepoints: str, ext: str) -> Path:
return WEBAPP_EMOJI_CACHE_DIR / f"{codepoints}.512.{ext}"
def _webapp_animated_emoji_source_url(codepoints: str, ext: str) -> str:
return f"https://fonts.gstatic.com/s/e/notoemoji/latest/{codepoints}/512.{ext}"
def _webapp_animated_emoji_asset_path(emoji: str, ext: str = "gif") -> str:
codepoints = _emoji_to_codepoints(emoji)
if not codepoints or ext not in {"gif", "webp"}:
return ""
return f"/webapp-emoji/{codepoints}/512.{ext}"
def _resolve_telegram_bot_id(bot_token: str) -> Optional[int]:
token_prefix = str(bot_token or "").strip().split(":", 1)[0]
if not token_prefix.isdigit():
@@ -430,38 +473,254 @@ async def webapp_logo_route(request: web.Request) -> web.Response:
if not raw_logo_url:
raise web.HTTPNotFound(text="webapp_logo_not_configured")
parsed_logo_url = urlsplit(raw_logo_url)
if parsed_logo_url.scheme != "https" or not parsed_logo_url.hostname:
if not _is_proxyable_webapp_logo_url(raw_logo_url):
raise web.HTTPNotFound(text="webapp_logo_not_proxied")
parsed_logo_url = urlsplit(raw_logo_url)
if not await _hostname_resolves_to_public_address(parsed_logo_url.hostname):
raise web.HTTPNotFound(text="webapp_logo_not_proxied")
source_logo_url = raw_logo_url
logo_cache: Optional[Tuple[bytes, str]] = request.app.get("webapp_logo_cache")
if logo_cache is None:
logo_cache: Optional[Tuple[str, bytes, str]] = request.app.get("webapp_logo_cache")
if logo_cache is None or logo_cache[0] != source_logo_url:
cache_lock: asyncio.Lock = request.app["webapp_logo_cache_lock"]
async with cache_lock:
logo_cache = request.app.get("webapp_logo_cache")
if logo_cache is None:
logo_cache = await _fetch_webapp_logo(source_logo_url)
if logo_cache is None or logo_cache[0] != source_logo_url:
fetched_logo = await _load_or_fetch_webapp_logo(source_logo_url)
logo_cache = (
(source_logo_url, fetched_logo[0], fetched_logo[1]) if fetched_logo else None
)
request.app["webapp_logo_cache"] = logo_cache
if not logo_cache:
raise web.HTTPNotFound(text="webapp_logo_unavailable")
body, content_type = logo_cache
_, body, content_type = logo_cache
response = web.Response(body=body, content_type=content_type)
response.headers["Cache-Control"] = "public, max-age=3600"
response.headers["Cache-Control"] = "public, max-age=31536000, immutable"
return response
async def webapp_animated_emoji_route(request: web.Request) -> web.Response:
codepoints = str(request.match_info.get("codepoints") or "").strip().lower()
ext = str(request.match_info.get("ext") or "").strip().lower()
if not re.fullmatch(r"[0-9a-f]+(?:_[0-9a-f]+)*", codepoints) or ext not in {"gif", "webp"}:
raise web.HTTPNotFound(text="webapp_emoji_not_found")
emoji_cache_key = f"{codepoints}:{ext}"
emoji_caches: Dict[str, Tuple[bytes, str]] = request.app.setdefault("webapp_emoji_cache", {})
emoji_cache = emoji_caches.get(emoji_cache_key)
if emoji_cache is None:
cache_lock: asyncio.Lock = request.app.setdefault("webapp_emoji_cache_lock", asyncio.Lock())
async with cache_lock:
emoji_cache = emoji_caches.get(emoji_cache_key)
if emoji_cache is None:
emoji_cache = await _load_or_fetch_webapp_animated_emoji(codepoints, ext)
if emoji_cache:
emoji_caches[emoji_cache_key] = emoji_cache
if not emoji_cache:
raise web.HTTPNotFound(text="webapp_emoji_unavailable")
body, content_type = emoji_cache
response = web.Response(body=body, content_type=content_type)
response.headers["Cache-Control"] = "public, max-age=31536000, immutable"
return response
async def _warm_webapp_logo_cache(app: web.Application) -> None:
settings: Settings = app["settings"]
raw_logo_url = (settings.WEBAPP_LOGO_URL or "").strip()
if not raw_logo_url or not _is_proxyable_webapp_logo_url(raw_logo_url):
return
parsed_logo_url = urlsplit(raw_logo_url)
if not parsed_logo_url.hostname or not await _hostname_resolves_to_public_address(
parsed_logo_url.hostname
):
return
cache_lock: asyncio.Lock = app["webapp_logo_cache_lock"]
async with cache_lock:
logo_cache: Optional[Tuple[str, bytes, str]] = app.get("webapp_logo_cache")
if logo_cache and logo_cache[0] == raw_logo_url:
return
loaded_logo = await _load_or_fetch_webapp_logo(raw_logo_url)
app["webapp_logo_cache"] = (
(raw_logo_url, loaded_logo[0], loaded_logo[1]) if loaded_logo else None
)
async def _warm_webapp_animated_emoji_cache(app: web.Application) -> None:
settings: Settings = app["settings"]
if str(settings.WEBAPP_LOGO_EMOJI_FONT or "").strip() != "noto-color-animated":
return
codepoints = _emoji_to_codepoints(settings.WEBAPP_LOGO_EMOJI)
if not codepoints:
return
app.setdefault("webapp_emoji_cache", {})
app.setdefault("webapp_emoji_cache_lock", asyncio.Lock())
emoji_caches: Dict[str, Tuple[bytes, str]] = app["webapp_emoji_cache"]
for ext in ("gif", "webp"):
emoji_cache_key = f"{codepoints}:{ext}"
if emoji_cache_key in emoji_caches:
continue
loaded_emoji = await _load_or_fetch_webapp_animated_emoji(codepoints, ext)
if loaded_emoji:
emoji_caches[emoji_cache_key] = loaded_emoji
if ext == "gif":
return
async def _load_or_fetch_webapp_animated_emoji(
codepoints: str, ext: str
) -> Optional[Tuple[bytes, str]]:
disk_emoji = await asyncio.to_thread(_read_webapp_animated_emoji_from_disk, codepoints, ext)
if disk_emoji:
return disk_emoji
fetched_emoji = await _fetch_webapp_animated_emoji(codepoints, ext)
if fetched_emoji:
await asyncio.to_thread(
_write_webapp_animated_emoji_to_disk, codepoints, ext, fetched_emoji
)
return fetched_emoji
def _read_webapp_animated_emoji_from_disk(codepoints: str, ext: str) -> Optional[Tuple[bytes, str]]:
path = _webapp_emoji_disk_path(codepoints, ext)
try:
body = path.read_bytes()
except OSError:
return None
if not body or len(body) > WEBAPP_EMOJI_MAX_BYTES:
return None
return body, "image/gif" if ext == "gif" else "image/webp"
def _write_webapp_animated_emoji_to_disk(
codepoints: str, ext: str, emoji: Tuple[bytes, str]
) -> None:
body, _content_type = emoji
if not body or len(body) > WEBAPP_EMOJI_MAX_BYTES:
return
path = _webapp_emoji_disk_path(codepoints, ext)
try:
WEBAPP_EMOJI_CACHE_DIR.mkdir(parents=True, exist_ok=True)
path.write_bytes(body)
except OSError as exc:
logger.warning("Failed to write WEBAPP animated emoji cache: %s", exc)
async def _fetch_webapp_animated_emoji(codepoints: str, ext: str) -> Optional[Tuple[bytes, str]]:
try:
session = await _get_shared_http_session()
timeout = ClientTimeout(total=4)
source_url = _webapp_animated_emoji_source_url(codepoints, ext)
async with session.get(
source_url,
allow_redirects=False,
headers={"Accept": "image/gif,image/webp,image/*,*/*;q=0.8"},
timeout=timeout,
) as response:
if response.status != 200:
return None
content_type = (
(response.headers.get("Content-Type") or "").split(";", 1)[0].strip().lower()
)
expected_content_type = "image/gif" if ext == "gif" else "image/webp"
if content_type and content_type != expected_content_type:
return None
body = bytearray()
async for chunk in response.content.iter_chunked(64 * 1024):
body.extend(chunk)
if len(body) > WEBAPP_EMOJI_MAX_BYTES:
logger.warning("WEBAPP animated emoji exceeded the 4 MiB limit.")
return None
if not body:
return None
return bytes(body), expected_content_type
except Exception as exc:
logger.warning("Failed to fetch WEBAPP animated emoji: %s", exc)
return None
async def _load_or_fetch_webapp_logo(logo_url: str) -> Optional[Tuple[bytes, str]]:
disk_logo = await asyncio.to_thread(_read_webapp_logo_from_disk, logo_url)
if disk_logo:
return disk_logo
fetched_logo = await _fetch_webapp_logo(logo_url)
if fetched_logo:
await asyncio.to_thread(_write_webapp_logo_to_disk, logo_url, fetched_logo)
return fetched_logo
def _read_webapp_logo_from_disk(logo_url: str) -> Optional[Tuple[bytes, str]]:
body_path, meta_path = _webapp_logo_disk_paths(logo_url)
try:
metadata = json.loads(meta_path.read_text(encoding="utf-8"))
if metadata.get("source_url") != logo_url:
return None
content_type = str(metadata.get("content_type") or "").strip().lower()
if not content_type.startswith("image/"):
return None
body = body_path.read_bytes()
except (OSError, json.JSONDecodeError):
return None
if not body or len(body) > WEBAPP_LOGO_MAX_BYTES:
return None
return body, content_type
def _write_webapp_logo_to_disk(logo_url: str, logo: Tuple[bytes, str]) -> None:
body, content_type = logo
if not body or len(body) > WEBAPP_LOGO_MAX_BYTES:
return
body_path, meta_path = _webapp_logo_disk_paths(logo_url)
try:
WEBAPP_LOGO_CACHE_DIR.mkdir(parents=True, exist_ok=True)
body_path.write_bytes(body)
meta_path.write_text(
json.dumps(
{
"source_url": logo_url,
"content_type": content_type,
"cached_at": datetime.now(timezone.utc).isoformat(),
"bytes": len(body),
},
ensure_ascii=False,
separators=(",", ":"),
),
encoding="utf-8",
)
except OSError as exc:
logger.warning("Failed to write WEBAPP_LOGO_URL cache: %s", exc)
async def _fetch_webapp_logo(logo_url: str) -> Optional[Tuple[bytes, str]]:
"""Fetch and cache the configured logo on the server side."""
try:
session = await _get_shared_http_session()
timeout = ClientTimeout(total=3)
async with session.get(logo_url, allow_redirects=False, timeout=timeout) as response:
async with session.get(
logo_url,
allow_redirects=False,
headers={"Accept": "image/avif,image/webp,image/svg+xml,image/png,image/*,*/*;q=0.8"},
timeout=timeout,
) as response:
if response.status != 200:
logger.warning(
"WEBAPP_LOGO_URL returned HTTP %s; keeping the logo hidden.",
@@ -504,7 +763,7 @@ async def _get_shared_http_session() -> ClientSession:
timeout=ClientTimeout(total=30),
headers={
"User-Agent": "Mozilla/5.0",
"Accept": "application/javascript,text/javascript,*/*;q=0.8",
"Accept": "*/*",
},
)
return _SHARED_HTTP_SESSION
@@ -582,8 +841,8 @@ async def _security_headers_middleware(request: web.Request, handler):
f"script-src 'self' 'nonce-{nonce}' 'unsafe-eval' https://telegram.org; "
"frame-src https://oauth.telegram.org; "
"frame-ancestors https://web.telegram.org https://t.me; "
"style-src 'self' 'unsafe-inline'; "
"font-src 'self' https://cdn.jsdelivr.net data:; "
"style-src 'self' 'unsafe-inline' https://fonts.googleapis.com https://cdn.jsdelivr.net; "
"font-src 'self' https://fonts.gstatic.com https://cdn.jsdelivr.net data:; "
"img-src 'self' data: https: http:; "
"connect-src 'self' https://oauth.telegram.org; "
"object-src 'none'; "
@@ -782,6 +1041,7 @@ async def index_route(request: web.Request) -> web.Response:
"primaryColor": settings.WEBAPP_PRIMARY_COLOR,
"logoUrl": cached["logo_url"],
"logoEmoji": settings.WEBAPP_LOGO_EMOJI,
"logoEmojiFont": settings.WEBAPP_LOGO_EMOJI_FONT,
"apiBase": "/api",
"telegramLoginBotUsername": request.app.get("bot_username") or "",
"telegramLoginBotId": _resolve_telegram_bot_id(settings.BOT_TOKEN) or 0,
@@ -821,6 +1081,19 @@ async def index_route(request: web.Request) -> web.Response:
WEBAPP_JS_PLACEHOLDER,
f'<script src="/{_resolve_webapp_js_asset_name()}" defer></script>',
)
brand_asset_url = cached["logo_url"]
if not brand_asset_url and settings.WEBAPP_LOGO_EMOJI_FONT == "noto-color-animated":
brand_asset_url = _webapp_animated_emoji_asset_path(settings.WEBAPP_LOGO_EMOJI)
if brand_asset_url:
html = html.replace(
'<link rel="preload" id="logo-preload" href="" as="image" fetchpriority="high" crossorigin="anonymous">',
f'<link rel="preload" href="{brand_asset_url}" as="image" fetchpriority="high" crossorigin="anonymous">',
)
else:
html = html.replace(
'<link rel="preload" id="logo-preload" href="" as="image" fetchpriority="high" crossorigin="anonymous">',
"",
)
return web.Response(text=html, content_type="text/html", charset="utf-8")