Sashegdev
620 lines
22 KiB
Python
620 lines
22 KiB
Python
import base64
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import json
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import sqlite3
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import hashlib
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import hmac
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import secrets
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import time
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from datetime import datetime
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from pathlib import Path
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from typing import Optional
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from contextlib import contextmanager
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import structlog
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from fastapi import APIRouter, HTTPException, Request, Depends, status
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from fastapi.security import HTTPBearer, HTTPAuthorizationCredentials
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from pydantic import BaseModel, Field, field_validator
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import re
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logger = structlog.get_logger(__name__)
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# ====================== КОНФИГ ======================
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AUTH_DB = Path("data/auth.db")
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AUTH_DB.parent.mkdir(exist_ok=True)
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SECRET_KEY = Path("data/.secret_key")
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RATE_LIMIT_DB = Path("data/rate_limit.db")
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# Токены
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ACCESS_TOKEN_EXPIRE_MINUTES = 60 * 24 # 24 часа
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REFRESH_TOKEN_EXPIRE_DAYS = 30
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# Лимиты
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MAX_LOGIN_ATTEMPTS = 5
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LOGIN_BLOCK_MINUTES = 15
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# ====================== СЕКРЕТНЫЙ КЛЮЧ ======================
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def _get_secret() -> bytes:
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"""Безопасное получение/создание секретного ключа"""
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if SECRET_KEY.exists():
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return SECRET_KEY.read_bytes()
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key = secrets.token_bytes(64)
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SECRET_KEY.write_bytes(key)
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SECRET_KEY.chmod(0o600)
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return key
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_SECRET = _get_secret()
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# ====================== JWT ФУНКЦИИ ======================
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def create_jwt(payload: dict, expires_in: int = None) -> str:
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"""Создание JWT токена"""
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if expires_in is None:
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expires_in = ACCESS_TOKEN_EXPIRE_MINUTES * 60
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payload = payload.copy()
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payload["exp"] = time.time() + expires_in
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payload["iat"] = time.time()
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payload["jti"] = secrets.token_hex(16)
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header = base64.urlsafe_b64encode(
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json.dumps({"alg": "HS256", "typ": "JWT"}).encode()
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).rstrip(b'=').decode()
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body = base64.urlsafe_b64encode(
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json.dumps(payload).encode()
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).rstrip(b'=').decode()
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msg = f"{header}.{body}".encode()
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sig = hmac.new(_SECRET, msg, hashlib.sha256).digest()
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return f"{header}.{body}.{base64.urlsafe_b64encode(sig).rstrip(b'=').decode()}"
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def verify_jwt(token: str) -> Optional[dict]:
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"""Верификация JWT токена"""
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try:
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parts = token.split(".")
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if len(parts) != 3:
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return None
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header, body, sig = parts
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sig_padded = sig + '=' * (4 - len(sig) % 4)
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expected_sig = base64.urlsafe_b64decode(sig_padded)
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msg = f"{header}.{body}".encode()
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if not hmac.compare_digest(
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hmac.new(_SECRET, msg, hashlib.sha256).digest(),
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expected_sig
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):
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return None
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body_padded = body + '=' * (4 - len(body) % 4)
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payload = json.loads(base64.urlsafe_b64decode(body_padded))
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if payload.get("exp", 0) < time.time():
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return None
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return payload
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except Exception:
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return None
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# ====================== БАЗА ДАННЫХ ======================
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@contextmanager
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def get_db():
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"""Контекстный менеджер для БД"""
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conn = sqlite3.connect(str(AUTH_DB), check_same_thread=False, timeout=10)
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conn.row_factory = sqlite3.Row
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try:
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yield conn
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conn.commit()
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except Exception:
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conn.rollback()
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raise
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finally:
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conn.close()
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def init_rate_limit_db():
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"""Инициализация БД для rate limiting"""
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conn = sqlite3.connect(str(RATE_LIMIT_DB))
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conn.executescript("""
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CREATE TABLE IF NOT EXISTS login_attempts (
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ip TEXT PRIMARY KEY,
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attempts INTEGER DEFAULT 1,
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first_attempt REAL NOT NULL,
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last_attempt REAL NOT NULL,
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blocked_until REAL
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);
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""")
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conn.commit()
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conn.close()
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def init_db():
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"""Инициализация основной БД"""
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with get_db() as conn:
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conn.executescript("""
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CREATE TABLE IF NOT EXISTS users (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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username TEXT UNIQUE COLLATE NOCASE,
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password_hash TEXT NOT NULL,
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uuid TEXT UNIQUE NOT NULL,
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role INTEGER DEFAULT 0,
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created_at REAL NOT NULL,
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last_login REAL,
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is_active BOOLEAN DEFAULT 1,
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banned_until REAL
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);
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CREATE TABLE IF NOT EXISTS refresh_tokens (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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user_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
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token_hash TEXT NOT NULL,
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jti TEXT NOT NULL,
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expires_at REAL NOT NULL,
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revoked BOOLEAN DEFAULT 0,
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created_at REAL NOT NULL
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);
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CREATE TABLE IF NOT EXISTS user_sessions (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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user_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
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session_token TEXT UNIQUE NOT NULL,
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ip_address TEXT,
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user_agent TEXT,
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created_at REAL NOT NULL,
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expires_at REAL NOT NULL,
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is_active BOOLEAN DEFAULT 1
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);
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CREATE TABLE IF NOT EXISTS passes (
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code TEXT PRIMARY KEY,
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owner TEXT,
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is_active BOOLEAN DEFAULT 1,
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activated_by INTEGER REFERENCES users(id),
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activated_at REAL,
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expires_at REAL,
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max_uses INTEGER DEFAULT 1,
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uses INTEGER DEFAULT 0
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);
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CREATE TABLE IF NOT EXISTS user_passes (
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user_id INTEGER REFERENCES users(id) ON DELETE CASCADE,
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pass_code TEXT REFERENCES passes(code),
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activated_at REAL NOT NULL,
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PRIMARY KEY (user_id, pass_code)
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);
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CREATE TABLE IF NOT EXISTS pass_requests (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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requester_id INTEGER NOT NULL REFERENCES users(id),
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target_username TEXT NOT NULL,
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reason TEXT,
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status TEXT DEFAULT 'pending',
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decision_reason TEXT,
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created_at REAL NOT NULL,
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reviewed_by INTEGER REFERENCES users(id),
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reviewed_at REAL
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);
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CREATE TABLE IF NOT EXISTS audit_log (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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user_id INTEGER REFERENCES users(id),
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action TEXT NOT NULL,
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details TEXT,
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ip_address TEXT,
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timestamp REAL NOT NULL
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);
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CREATE INDEX IF NOT EXISTS idx_audit_user ON audit_log(user_id);
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CREATE INDEX IF NOT EXISTS idx_audit_timestamp ON audit_log(timestamp);
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CREATE INDEX IF NOT EXISTS idx_sessions_user ON user_sessions(user_id);
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CREATE INDEX IF NOT EXISTS idx_refresh_user ON refresh_tokens(user_id);
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""")
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# Добавляем колонку role если её нет
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cursor = conn.execute("PRAGMA table_info(users)")
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columns = [col[1] for col in cursor.fetchall()]
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if "role" not in columns:
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conn.execute("ALTER TABLE users ADD COLUMN role INTEGER DEFAULT 0")
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logger.info("Added role column to users table")
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init_rate_limit_db()
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logger.info("Auth database initialized")
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# ====================== ХЕЛПЕРЫ ======================
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def hash_password(password: str) -> str:
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"""Хэширование пароля"""
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salt = secrets.token_hex(32)
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hash_obj = hashlib.pbkdf2_hmac(
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'sha256',
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password.encode('utf-8'),
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salt.encode('utf-8'),
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300000
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)
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return f"{salt}${hash_obj.hex()}"
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def verify_password(password: str, stored: str) -> bool:
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"""Верификация пароля"""
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try:
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salt, stored_hash = stored.split('$')
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hash_obj = hashlib.pbkdf2_hmac(
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'sha256',
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password.encode('utf-8'),
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salt.encode('utf-8'),
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300000
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)
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return hmac.compare_digest(hash_obj.hex(), stored_hash)
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except Exception:
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return False
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def generate_uuid() -> str:
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"""Генерация UUID"""
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return f"{secrets.token_hex(4)}-{secrets.token_hex(2)}-{secrets.token_hex(2)}-{secrets.token_hex(2)}-{secrets.token_hex(6)}"
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def check_rate_limit(ip: str) -> tuple[bool, Optional[int]]:
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"""Проверка rate limiting"""
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conn = sqlite3.connect(str(RATE_LIMIT_DB))
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now = time.time()
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try:
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row = conn.execute(
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"SELECT attempts, blocked_until FROM login_attempts WHERE ip = ?",
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(ip,)
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).fetchone()
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if row:
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blocked_until = row[1]
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if blocked_until and blocked_until > now:
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return False, int(blocked_until - now)
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if row[0] >= MAX_LOGIN_ATTEMPTS:
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blocked_until = now + (LOGIN_BLOCK_MINUTES * 60)
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conn.execute(
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"UPDATE login_attempts SET blocked_until = ? WHERE ip = ?",
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(blocked_until, ip)
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)
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conn.commit()
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return False, LOGIN_BLOCK_MINUTES * 60
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return True, None
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finally:
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conn.close()
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def record_login_attempt(ip: str, success: bool):
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"""Запись попытки входа"""
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conn = sqlite3.connect(str(RATE_LIMIT_DB))
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now = time.time()
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try:
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if success:
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conn.execute("DELETE FROM login_attempts WHERE ip = ?", (ip,))
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else:
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conn.execute("""
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INSERT INTO login_attempts (ip, attempts, first_attempt, last_attempt)
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VALUES (?, 1, ?, ?)
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ON CONFLICT(ip) DO UPDATE SET
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attempts = attempts + 1,
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last_attempt = ?
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""", (ip, now, now, now))
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conn.commit()
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finally:
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conn.close()
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def log_audit(user_id: int, action: str, details: str, ip_address: str):
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"""Логирование действий"""
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with get_db() as conn:
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conn.execute(
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"INSERT INTO audit_log (user_id, action, details, ip_address, timestamp) VALUES (?, ?, ?, ?, ?)",
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(user_id, action, details, ip_address, time.time())
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)
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# ====================== МОДЕЛИ ======================
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class LoginRequest(BaseModel):
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username: str = Field(..., min_length=3, max_length=32)
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password: str = Field(..., min_length=6, max_length=128)
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@field_validator('username')
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def validate_username(cls, v):
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if not re.match(r'^[a-zA-Z0-9_]+$', v):
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raise ValueError('Имя пользователя может содержать только буквы, цифры и подчеркивания')
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return v.lower()
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class RegisterRequest(BaseModel):
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username: str = Field(..., min_length=3, max_length=32)
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password: str = Field(..., min_length=6, max_length=128)
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@field_validator('username')
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def validate_username(cls, v):
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if not re.match(r'^[a-zA-Z0-9_]+$', v):
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raise ValueError('Имя пользователя может содержать только буквы, цифры и подчеркивания')
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return v.lower()
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class TokenResponse(BaseModel):
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access_token: str
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refresh_token: str
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expires_in: int
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token_type: str = "bearer"
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username: str
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uuid: str
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role: int
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role_name: str
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# ====================== DEPENDENCIES ======================
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router = APIRouter(prefix="/auth", tags=["auth"])
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bearer = HTTPBearer(auto_error=False)
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async def get_current_user(
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credentials: HTTPAuthorizationCredentials = Depends(bearer),
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request: Request = None
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) -> dict:
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"""Получение текущего пользователя"""
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if not credentials:
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raise HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="Не авторизован",
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headers={"WWW-Authenticate": "Bearer"},
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)
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payload = verify_jwt(credentials.credentials)
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if not payload or payload.get("type") != "access":
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raise HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="Недействительный токен"
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)
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with get_db() as conn:
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user = conn.execute(
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"SELECT id, username, uuid, role, is_active, banned_until FROM users WHERE id = ?",
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(payload["sub"],)
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).fetchone()
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if not user:
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raise HTTPException(401, "Пользователь не найден")
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if not user["is_active"]:
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raise HTTPException(403, "Аккаунт деактивирован")
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if user["banned_until"] and user["banned_until"] > time.time():
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raise HTTPException(403, "Аккаунт забанен")
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return {
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"id": user["id"],
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"username": user["username"],
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"uuid": user["uuid"],
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"role": user["role"]
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}
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def require_role(min_role: int):
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"""Декоратор для проверки роли"""
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async def dependency(current_user: dict = Depends(get_current_user)):
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if current_user["role"] < min_role:
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from roles import ROLE_NAMES
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raise HTTPException(
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status_code=status.HTTP_403_FORBIDDEN,
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detail=f"Требуется роль {ROLE_NAMES.get(min_role, 'неизвестная')}"
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)
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return current_user
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return dependency
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# ====================== ЭНДПОИНТЫ ======================
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@router.post("/register", response_model=TokenResponse)
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async def register(body: RegisterRequest, request: Request):
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"""Регистрация нового пользователя"""
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ip = request.client.host if request.client else "unknown"
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allowed, wait = check_rate_limit(ip)
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if not allowed:
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raise HTTPException(429, f"Слишком много попыток. Подождите {wait} секунд")
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with get_db() as conn:
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existing = conn.execute(
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"SELECT username FROM users WHERE username = ?",
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(body.username,)
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).fetchone()
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if existing:
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raise HTTPException(409, "Пользователь с таким именем уже существует")
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uuid = generate_uuid()
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pw_hash = hash_password(body.password)
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now = time.time()
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cursor = conn.execute(
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"""INSERT INTO users (username, password_hash, uuid, created_at, role)
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VALUES (?, ?, ?, ?, ?)""",
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(body.username, pw_hash, uuid, now, 0) # role 0 = обычный пользователь
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)
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user_id = cursor.lastrowid
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# Создаем сессию
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session_token = secrets.token_urlsafe(32)
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conn.execute(
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"INSERT INTO user_sessions (user_id, session_token, ip_address, user_agent, created_at, expires_at) VALUES (?, ?, ?, ?, ?, ?)",
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(user_id, session_token, ip, request.headers.get("user-agent", ""), now, now + (ACCESS_TOKEN_EXPIRE_MINUTES * 60))
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)
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# Токены
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access_token = create_jwt({
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"sub": user_id,
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"username": body.username,
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"uuid": uuid,
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"role": 0,
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"type": "access",
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"jti": session_token
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})
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refresh_token = create_jwt({
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"sub": user_id,
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"type": "refresh",
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"jti": secrets.token_hex(16)
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}, expires_in=REFRESH_TOKEN_EXPIRE_DAYS * 86400)
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refresh_hash = hashlib.sha256(refresh_token.encode()).hexdigest()
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conn.execute(
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"INSERT INTO refresh_tokens (user_id, token_hash, jti, expires_at, created_at) VALUES (?, ?, ?, ?, ?)",
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(user_id, refresh_hash, secrets.token_hex(16), now + (REFRESH_TOKEN_EXPIRE_DAYS * 86400), now)
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)
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log_audit(user_id, "register", f"User registered from {ip}", ip)
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logger.info("User registered", username=body.username, user_id=user_id, ip=ip)
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from roles import ROLE_NAMES
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return TokenResponse(
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access_token=access_token,
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refresh_token=refresh_token,
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expires_in=ACCESS_TOKEN_EXPIRE_MINUTES * 60,
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username=body.username,
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uuid=uuid,
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role=0,
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role_name=ROLE_NAMES[0]
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)
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@router.post("/login", response_model=TokenResponse)
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async def login(body: LoginRequest, request: Request):
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"""Вход в систему"""
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ip = request.client.host if request.client else "unknown"
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allowed, wait = check_rate_limit(ip)
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if not allowed:
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raise HTTPException(429, f"Слишком много попыток. Подождите {wait} секунд")
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with get_db() as conn:
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user = conn.execute(
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"SELECT id, username, uuid, password_hash, role, is_active, banned_until FROM users WHERE username = ?",
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(body.username,)
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).fetchone()
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if not user or not verify_password(body.password, user["password_hash"]):
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record_login_attempt(ip, False)
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log_audit(0, "login_failed", f"Failed login for {body.username} from {ip}", ip)
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raise HTTPException(401, "Неверное имя пользователя или пароль")
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if not user["is_active"]:
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raise HTTPException(403, "Аккаунт деактивирован")
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if user["banned_until"] and user["banned_until"] > time.time():
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raise HTTPException(403, "Аккаунт забанен")
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|
|
record_login_attempt(ip, True)
|
|
|
|
now = time.time()
|
|
conn.execute(
|
|
"UPDATE users SET last_login = ? WHERE id = ?",
|
|
(now, user["id"])
|
|
)
|
|
|
|
# Создаем сессию
|
|
session_token = secrets.token_urlsafe(32)
|
|
conn.execute(
|
|
"INSERT INTO user_sessions (user_id, session_token, ip_address, user_agent, created_at, expires_at) VALUES (?, ?, ?, ?, ?, ?)",
|
|
(user["id"], session_token, ip, request.headers.get("user-agent", ""), now, now + (ACCESS_TOKEN_EXPIRE_MINUTES * 60))
|
|
)
|
|
|
|
access_token = create_jwt({
|
|
"sub": user["id"],
|
|
"username": user["username"],
|
|
"uuid": user["uuid"],
|
|
"role": user["role"],
|
|
"type": "access",
|
|
"jti": session_token
|
|
})
|
|
|
|
refresh_token = create_jwt({
|
|
"sub": user["id"],
|
|
"type": "refresh",
|
|
"jti": secrets.token_hex(16)
|
|
}, expires_in=REFRESH_TOKEN_EXPIRE_DAYS * 86400)
|
|
|
|
refresh_hash = hashlib.sha256(refresh_token.encode()).hexdigest()
|
|
conn.execute(
|
|
"INSERT INTO refresh_tokens (user_id, token_hash, jti, expires_at, created_at) VALUES (?, ?, ?, ?, ?)",
|
|
(user["id"], refresh_hash, secrets.token_hex(16), now + (REFRESH_TOKEN_EXPIRE_DAYS * 86400), now)
|
|
)
|
|
|
|
log_audit(user["id"], "login", f"User logged in from {ip}", ip)
|
|
logger.info("User logged in", username=user["username"], user_id=user["id"], ip=ip)
|
|
|
|
from roles import ROLE_NAMES
|
|
return TokenResponse(
|
|
access_token=access_token,
|
|
refresh_token=refresh_token,
|
|
expires_in=ACCESS_TOKEN_EXPIRE_MINUTES * 60,
|
|
username=user["username"],
|
|
uuid=user["uuid"],
|
|
role=user["role"],
|
|
role_name=ROLE_NAMES.get(user["role"], "Неизвестно")
|
|
)
|
|
|
|
@router.post("/logout")
|
|
async def logout(current_user: dict = Depends(get_current_user), request: Request = None):
|
|
"""Выход из системы"""
|
|
ip = request.client.host if request.client else "unknown"
|
|
|
|
with get_db() as conn:
|
|
conn.execute(
|
|
"UPDATE user_sessions SET is_active = 0 WHERE user_id = ?",
|
|
(current_user["id"],)
|
|
)
|
|
conn.execute(
|
|
"UPDATE refresh_tokens SET revoked = 1 WHERE user_id = ?",
|
|
(current_user["id"],)
|
|
)
|
|
|
|
log_audit(current_user["id"], "logout", f"User logged out from {ip}", ip)
|
|
|
|
logger.info("User logged out", user_id=current_user["id"], ip=ip)
|
|
return {"success": True}
|
|
|
|
@router.post("/refresh")
|
|
async def refresh(body: dict, request: Request):
|
|
"""Обновление access токена"""
|
|
refresh_token = body.get("refresh_token")
|
|
if not refresh_token:
|
|
raise HTTPException(400, "refresh_token обязателен")
|
|
|
|
payload = verify_jwt(refresh_token)
|
|
if not payload or payload.get("type") != "refresh":
|
|
raise HTTPException(401, "Недействительный refresh token")
|
|
|
|
ip = request.client.host if request.client else "unknown"
|
|
|
|
with get_db() as conn:
|
|
token_hash = hashlib.sha256(refresh_token.encode()).hexdigest()
|
|
token_row = conn.execute(
|
|
"SELECT user_id, revoked FROM refresh_tokens WHERE token_hash = ? AND expires_at > ?",
|
|
(token_hash, time.time())
|
|
).fetchone()
|
|
|
|
if not token_row or token_row["revoked"]:
|
|
raise HTTPException(401, "Refresh token истёк или недействителен")
|
|
|
|
user = conn.execute(
|
|
"SELECT id, username, uuid, role FROM users WHERE id = ? AND is_active = 1",
|
|
(token_row["user_id"],)
|
|
).fetchone()
|
|
|
|
if not user:
|
|
raise HTTPException(401, "Пользователь не найден или заблокирован")
|
|
|
|
now = time.time()
|
|
session_token = secrets.token_urlsafe(32)
|
|
conn.execute(
|
|
"INSERT INTO user_sessions (user_id, session_token, ip_address, user_agent, created_at, expires_at) VALUES (?, ?, ?, ?, ?, ?)",
|
|
(user["id"], session_token, ip, request.headers.get("user-agent", ""), now, now + (ACCESS_TOKEN_EXPIRE_MINUTES * 60))
|
|
)
|
|
|
|
new_access_token = create_jwt({
|
|
"sub": user["id"],
|
|
"username": user["username"],
|
|
"uuid": user["uuid"],
|
|
"role": user["role"],
|
|
"type": "access",
|
|
"jti": session_token
|
|
})
|
|
|
|
log_audit(user["id"], "refresh_token", f"Token refreshed from {ip}", ip)
|
|
|
|
return {
|
|
"access_token": new_access_token,
|
|
"expires_in": ACCESS_TOKEN_EXPIRE_MINUTES * 60,
|
|
"token_type": "bearer"
|
|
} |