refactor: project architecture refactor, container splitting

2026-05-17 00:01:28 +03:00
parent e0b5218037
commit 30fb774d93
367 changed files with 2609 additions and 864 deletions
@@ -0,0 +1,362 @@
+import asyncio
+import base64
+import hashlib
+import hmac
+import json
+import logging
+import secrets
+import time
+from typing import Any, Dict, Optional
+from urllib.parse import parse_qsl
+
+from config.settings import Settings
+
+logger = logging.getLogger(__name__)
+
+# 5 minutes clock skew tolerance for Telegram clients
+TELEGRAM_CLOCK_SKEW_SECONDS = 300
+TELEGRAM_OAUTH_ISSUER = "https://oauth.telegram.org"
+TELEGRAM_OAUTH_JWKS_URL = "https://oauth.telegram.org/.well-known/jwks.json"
+TELEGRAM_OAUTH_ALGORITHMS = ["RS256", "ES256", "EdDSA"]
+
+
+def _urlsafe_b64encode(raw: bytes) -> str:
+    return base64.urlsafe_b64encode(raw).decode("ascii").rstrip("=")
+
+
+def _urlsafe_b64decode(raw: str) -> bytes:
+    padded = raw + ("=" * (-len(raw) % 4))
+    return base64.urlsafe_b64decode(padded.encode("ascii"))
+
+
+def _session_secret(settings: Settings) -> bytes:
+    return hmac.new(
+        settings.WEBAPP_SESSION_SECRET.encode("utf-8"),
+        b"remnawave-tg-shop-webapp-session",
+        hashlib.sha256,
+    ).digest()
+
+
+def create_webapp_session_token(settings: Settings, user_id: int) -> str:
+    now = int(time.time())
+    payload = {
+        "sub": int(user_id),
+        "iat": now,
+        "exp": now + max(60, int(settings.WEBAPP_SESSION_TTL_SECONDS)),
+    }
+    payload_part = _urlsafe_b64encode(json.dumps(payload, separators=(",", ":")).encode("utf-8"))
+    signature = hmac.new(
+        _session_secret(settings),
+        payload_part.encode("ascii"),
+        hashlib.sha256,
+    ).digest()
+    return f"{payload_part}.{_urlsafe_b64encode(signature)}"
+
+
+def verify_webapp_session_token(settings: Settings, token: str) -> Optional[int]:
+    if not token or "." not in token:
+        return None
+
+    try:
+        payload_part, signature_part = token.split(".", 1)
+        expected_signature = hmac.new(
+            _session_secret(settings),
+            payload_part.encode("ascii"),
+            hashlib.sha256,
+        ).digest()
+        received_signature = _urlsafe_b64decode(signature_part)
+        if not hmac.compare_digest(expected_signature, received_signature):
+            return None
+
+        payload = json.loads(_urlsafe_b64decode(payload_part).decode("utf-8"))
+        if int(payload.get("exp", 0)) < int(time.time()):
+            return None
+        return int(payload["sub"])
+    except Exception as exc:
+        logger.debug("Failed to verify webapp session token: %s", exc)
+        return None
+
+
+def create_telegram_oauth_nonce(settings: Settings, *, ttl_seconds: int = 600) -> str:
+    now = int(time.time())
+    payload = {
+        "n": secrets.token_urlsafe(24),
+        "iat": now,
+        "exp": now + max(60, int(ttl_seconds)),
+    }
+    payload_part = _urlsafe_b64encode(json.dumps(payload, separators=(",", ":")).encode("utf-8"))
+    signature = hmac.new(
+        _session_secret(settings),
+        f"telegram-oauth-nonce.{payload_part}".encode("ascii"),
+        hashlib.sha256,
+    ).digest()
+    return f"{payload_part}.{_urlsafe_b64encode(signature)}"
+
+
+def verify_telegram_oauth_nonce(settings: Settings, nonce: str) -> bool:
+    if not nonce or "." not in nonce:
+        return False
+
+    try:
+        payload_part, signature_part = nonce.split(".", 1)
+        expected_signature = hmac.new(
+            _session_secret(settings),
+            f"telegram-oauth-nonce.{payload_part}".encode("ascii"),
+            hashlib.sha256,
+        ).digest()
+        received_signature = _urlsafe_b64decode(signature_part)
+        if not hmac.compare_digest(expected_signature, received_signature):
+            return False
+
+        payload = json.loads(_urlsafe_b64decode(payload_part).decode("utf-8"))
+        now = int(time.time())
+        if int(payload.get("exp", 0)) < now:
+            return False
+        if int(payload.get("iat", 0)) > now + TELEGRAM_CLOCK_SKEW_SECONDS:
+            return False
+        return bool(payload.get("n"))
+    except Exception as exc:
+        logger.debug("Failed to verify Telegram OAuth nonce: %s", exc)
+        return False
+
+
+def create_signed_telegram_oauth_state(
+    settings: Settings,
+    payload: Dict[str, Any],
+    *,
+    ttl_seconds: int = 600,
+) -> str:
+    now = int(time.time())
+    state_payload = {
+        **payload,
+        "iat": now,
+        "exp": now + max(60, int(ttl_seconds)),
+    }
+    payload_part = _urlsafe_b64encode(
+        json.dumps(state_payload, separators=(",", ":")).encode("utf-8")
+    )
+    signature = hmac.new(
+        _session_secret(settings),
+        f"telegram-oauth-state.{payload_part}".encode("ascii"),
+        hashlib.sha256,
+    ).digest()
+    return f"{payload_part}.{_urlsafe_b64encode(signature)}"
+
+
+def verify_signed_telegram_oauth_state(
+    settings: Settings,
+    state: str,
+) -> Optional[Dict[str, Any]]:
+    if not state or "." not in state:
+        return None
+
+    try:
+        payload_part, signature_part = state.split(".", 1)
+        expected_signature = hmac.new(
+            _session_secret(settings),
+            f"telegram-oauth-state.{payload_part}".encode("ascii"),
+            hashlib.sha256,
+        ).digest()
+        received_signature = _urlsafe_b64decode(signature_part)
+        if not hmac.compare_digest(expected_signature, received_signature):
+            return None
+
+        payload = json.loads(_urlsafe_b64decode(payload_part).decode("utf-8"))
+        now = int(time.time())
+        if int(payload.get("exp", 0)) < now:
+            return None
+        if int(payload.get("iat", 0)) > now + TELEGRAM_CLOCK_SKEW_SECONDS:
+            return None
+        return payload
+    except Exception as exc:
+        logger.debug("Failed to verify Telegram OAuth state: %s", exc)
+        return None
+
+
+async def validate_telegram_oauth_id_token(
+    id_token: str,
+    *,
+    client_id: int,
+    expected_nonce: str,
+    max_age_seconds: int,
+) -> Optional[Dict[str, Any]]:
+    """Validate Telegram OIDC ID token and return a Telegram-like user payload."""
+
+    if not id_token or not client_id or not expected_nonce:
+        return None
+
+    try:
+        import jwt
+        from jwt import PyJWKClient
+    except Exception as exc:
+        logger.error(
+            "PyJWT is not installed; Telegram OAuth ID token validation is unavailable: %s",
+            exc,
+        )
+        return None
+
+    try:
+        jwks_client = PyJWKClient(TELEGRAM_OAUTH_JWKS_URL)
+        signing_key = await asyncio.to_thread(
+            jwks_client.get_signing_key_from_jwt,
+            id_token,
+        )
+        claims = await asyncio.to_thread(
+            jwt.decode,
+            id_token,
+            signing_key.key,
+            algorithms=TELEGRAM_OAUTH_ALGORITHMS,
+            audience=str(client_id),
+            issuer=TELEGRAM_OAUTH_ISSUER,
+            leeway=TELEGRAM_CLOCK_SKEW_SECONDS,
+            options={"require": ["exp", "iat", "iss", "aud"]},
+        )
+
+        if not hmac.compare_digest(str(claims.get("nonce") or ""), expected_nonce):
+            logger.warning("Telegram OAuth nonce mismatch.")
+            return None
+
+        now = int(time.time())
+        issued_at = int(claims.get("iat") or 0)
+        max_age = max(60, int(max_age_seconds))
+        if issued_at > now + TELEGRAM_CLOCK_SKEW_SECONDS or now - issued_at > max_age:
+            logger.warning("Telegram OAuth ID token is stale.")
+            return None
+
+        telegram_id_raw = claims.get("id")
+        if not telegram_id_raw:
+            return None
+        telegram_id = int(telegram_id_raw)
+
+        full_name = str(claims.get("name") or "").strip()
+        first_name = str(claims.get("given_name") or "").strip()
+        last_name = str(claims.get("family_name") or "").strip()
+        if full_name and not first_name:
+            name_parts = full_name.split(None, 1)
+            first_name = name_parts[0]
+            if len(name_parts) > 1 and not last_name:
+                last_name = name_parts[1]
+
+        return {
+            "id": telegram_id,
+            "username": claims.get("preferred_username") or claims.get("username"),
+            "first_name": first_name or full_name or "Telegram",
+            "last_name": last_name,
+            "photo_url": claims.get("picture"),
+            "language_code": claims.get("locale"),
+        }
+    except Exception as exc:
+        logger.warning("Failed to validate Telegram OAuth ID token: %s", exc)
+        return None
+
+
+def validate_telegram_webapp_init_data(
+    init_data: str,
+    bot_token: str,
+    *,
+    max_age_seconds: int,
+) -> Optional[Dict[str, Any]]:
+    """Validate Telegram Mini App initData and return the trusted user payload."""
+
+    try:
+        parsed_data = dict(parse_qsl(init_data or "", keep_blank_values=True))
+        received_hash = parsed_data.pop("hash", None)
+        if not received_hash:
+            return None
+
+        data_check_string = "\n".join(
+            f"{key}={value}" for key, value in sorted(parsed_data.items())
+        )
+        secret_key = hmac.new(
+            b"WebAppData",
+            bot_token.encode("utf-8"),
+            hashlib.sha256,
+        ).digest()
+        calculated_hash = hmac.new(
+            secret_key,
+            data_check_string.encode("utf-8"),
+            hashlib.sha256,
+        ).hexdigest()
+        if not hmac.compare_digest(calculated_hash, received_hash):
+            logger.warning("Telegram WebApp initData hash mismatch.")
+            return None
+
+        auth_date_raw = parsed_data.get("auth_date")
+        if auth_date_raw:
+            auth_date = int(auth_date_raw)
+            now = int(time.time())
+            max_age = max(60, int(max_age_seconds))
+            if auth_date > now + TELEGRAM_CLOCK_SKEW_SECONDS or now - auth_date > max_age:
+                logger.warning("Telegram WebApp initData auth_date is stale.")
+                return None
+
+        user_json = parsed_data.get("user")
+        if not user_json:
+            return None
+        user_data = json.loads(user_json)
+        if not user_data.get("id"):
+            return None
+        if parsed_data.get("start_param"):
+            user_data["start_param"] = parsed_data.get("start_param")
+        return user_data
+    except Exception as exc:
+        logger.warning("Failed to validate Telegram WebApp initData: %s", exc)
+        return None
+
+
+def validate_telegram_login_widget_data(
+    auth_data: Any,
+    bot_token: str,
+    *,
+    max_age_seconds: int,
+) -> Optional[Dict[str, Any]]:
+    """Validate Telegram Login Widget data and return the trusted user payload."""
+
+    try:
+        if isinstance(auth_data, str):
+            parsed_data = dict(parse_qsl(auth_data or "", keep_blank_values=True))
+        elif isinstance(auth_data, dict):
+            parsed_data = {
+                str(key): str(value) for key, value in auth_data.items() if value is not None
+            }
+        else:
+            return None
+
+        received_hash = str(parsed_data.pop("hash", "") or "")
+        if not received_hash:
+            return None
+
+        data_check_string = "\n".join(
+            f"{key}={value}" for key, value in sorted(parsed_data.items())
+        )
+        secret_key = hashlib.sha256(bot_token.encode("utf-8")).digest()
+        calculated_hash = hmac.new(
+            secret_key,
+            data_check_string.encode("utf-8"),
+            hashlib.sha256,
+        ).hexdigest()
+        if not hmac.compare_digest(calculated_hash, received_hash):
+            logger.warning("Telegram Login Widget hash mismatch.")
+            return None
+
+        auth_date_raw = parsed_data.get("auth_date")
+        if auth_date_raw:
+            auth_date = int(auth_date_raw)
+            now = int(time.time())
+            max_age = max(60, int(max_age_seconds))
+            if auth_date > now + TELEGRAM_CLOCK_SKEW_SECONDS or now - auth_date > max_age:
+                logger.warning("Telegram Login Widget auth_date is stale.")
+                return None
+
+        user_id_raw = parsed_data.get("id")
+        if not user_id_raw:
+            return None
+        int(user_id_raw)
+
+        if not parsed_data.get("first_name"):
+            return None
+
+        return parsed_data
+    except Exception as exc:
+        logger.warning("Failed to validate Telegram Login Widget data: %s", exc)
+        return None