241 lines
8.8 KiB
Python
241 lines
8.8 KiB
Python
# services/auth/app/core/security.py
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"""
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Security utilities for authentication service
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FIXED VERSION - Consistent JWT token structure
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"""
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import bcrypt
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import re
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import hashlib
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from datetime import datetime, timedelta, timezone
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from typing import Optional, Dict, Any
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import redis.asyncio as redis
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from fastapi import HTTPException, status
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import structlog
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from app.core.config import settings
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from shared.auth.jwt_handler import JWTHandler
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logger = structlog.get_logger()
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# Initialize JWT handler with SAME configuration as gateway
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jwt_handler = JWTHandler(settings.JWT_SECRET_KEY, settings.JWT_ALGORITHM)
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# Redis client for session management
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redis_client = redis.from_url(settings.REDIS_URL)
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class SecurityManager:
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"""Security utilities for authentication - FIXED VERSION"""
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@staticmethod
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def hash_password(password: str) -> str:
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"""Hash password using bcrypt"""
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salt = bcrypt.gensalt(rounds=settings.BCRYPT_ROUNDS)
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return bcrypt.hashpw(password.encode('utf-8'), salt).decode('utf-8')
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@staticmethod
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def verify_password(password: str, hashed_password: str) -> bool:
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"""Verify password against hash"""
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return bcrypt.checkpw(password.encode('utf-8'), hashed_password.encode('utf-8'))
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@staticmethod
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def validate_password(password: str) -> bool:
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"""Validate password strength"""
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if len(password) < settings.PASSWORD_MIN_LENGTH:
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return False
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if settings.PASSWORD_REQUIRE_UPPERCASE and not re.search(r'[A-Z]', password):
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return False
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if settings.PASSWORD_REQUIRE_LOWERCASE and not re.search(r'[a-z]', password):
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return False
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if settings.PASSWORD_REQUIRE_NUMBERS and not re.search(r'\d', password):
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return False
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if settings.PASSWORD_REQUIRE_SYMBOLS and not re.search(r'[!@#$%^&*(),.?":{}|<>]', password):
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return False
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return True
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@staticmethod
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def create_access_token(user_data: Dict[str, Any]) -> str:
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"""
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Create JWT access token with CONSISTENT structure
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FIXED: Uses shared JWT handler for consistency
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"""
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return jwt_handler.create_access_token(
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user_data=user_data,
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expires_delta=timedelta(minutes=settings.JWT_ACCESS_TOKEN_EXPIRE_MINUTES)
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)
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@staticmethod
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def create_refresh_token(user_data: Dict[str, Any]) -> str:
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"""
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Create JWT refresh token with CONSISTENT structure
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FIXED: Uses shared JWT handler for consistency
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"""
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return jwt_handler.create_refresh_token(
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user_data=user_data,
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expires_delta=timedelta(days=settings.JWT_REFRESH_TOKEN_EXPIRE_DAYS)
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)
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@staticmethod
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def verify_token(token: str) -> Optional[Dict[str, Any]]:
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"""
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Verify JWT token with CONSISTENT validation
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FIXED: Uses shared JWT handler for consistency
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"""
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try:
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return jwt_handler.verify_token(token)
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except Exception as e:
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logger.warning(f"Token verification failed: {e}")
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return None
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@staticmethod
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def decode_token(token: str) -> Optional[Dict[str, Any]]:
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"""
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Decode JWT token without verification (for debugging)
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"""
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try:
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return jwt_handler.decode_token_unsafe(token)
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except Exception as e:
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logger.warning(f"Token decode failed: {e}")
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return None
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@staticmethod
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async def track_login_attempt(email: str, ip_address: str, success: bool) -> None:
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"""Track login attempts for security monitoring"""
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try:
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key = f"login_attempts:{email}:{ip_address}"
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if success:
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# Clear failed attempts on successful login
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await redis_client.delete(key)
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else:
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# Increment failed attempts
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attempts = await redis_client.incr(key)
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if attempts == 1:
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# Set expiration on first failed attempt
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await redis_client.expire(key, settings.LOCKOUT_DURATION_MINUTES * 60)
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if attempts >= settings.MAX_LOGIN_ATTEMPTS:
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logger.warning(f"Account locked for {email} from {ip_address}")
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raise HTTPException(
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status_code=status.HTTP_429_TOO_MANY_REQUESTS,
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detail=f"Too many failed login attempts. Try again in {settings.LOCKOUT_DURATION_MINUTES} minutes."
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)
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except Exception as e:
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logger.error(f"Failed to track login attempt: {e}")
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@staticmethod
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async def is_account_locked(email: str, ip_address: str) -> bool:
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"""Check if account is locked due to failed login attempts"""
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try:
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key = f"login_attempts:{email}:{ip_address}"
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attempts = await redis_client.get(key)
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if attempts:
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attempts = int(attempts)
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return attempts >= settings.MAX_LOGIN_ATTEMPTS
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except Exception as e:
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logger.error(f"Failed to check account lock status: {e}")
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return False
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@staticmethod
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def hash_api_key(api_key: str) -> str:
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"""Hash API key for storage"""
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return hashlib.sha256(api_key.encode()).hexdigest()
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@staticmethod
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def generate_secure_token(length: int = 32) -> str:
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"""Generate secure random token"""
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import secrets
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return secrets.token_urlsafe(length)
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@staticmethod
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def mask_sensitive_data(data: str, visible_chars: int = 4) -> str:
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"""Mask sensitive data for logging"""
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if not data or len(data) <= visible_chars:
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return "*" * len(data) if data else ""
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return data[:visible_chars] + "*" * (len(data) - visible_chars)
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@staticmethod
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async def check_login_attempts(email: str) -> bool:
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"""Check if user has exceeded login attempts"""
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try:
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key = f"login_attempts:{email}"
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attempts = await redis_client.get(key)
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if attempts is None:
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return True
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return int(attempts) < settings.MAX_LOGIN_ATTEMPTS
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except Exception as e:
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logger.error(f"Error checking login attempts: {e}")
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return True # Allow on error
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@staticmethod
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async def increment_login_attempts(email: str) -> None:
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"""Increment login attempts for email"""
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try:
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key = f"login_attempts:{email}"
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await redis_client.incr(key)
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await redis_client.expire(key, settings.LOCKOUT_DURATION_MINUTES * 60)
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except Exception as e:
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logger.error(f"Error incrementing login attempts: {e}")
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@staticmethod
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async def clear_login_attempts(email: str) -> None:
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"""Clear login attempts for email after successful login"""
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try:
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key = f"login_attempts:{email}"
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await redis_client.delete(key)
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logger.debug(f"Cleared login attempts for {email}")
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except Exception as e:
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logger.error(f"Error clearing login attempts: {e}")
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@staticmethod
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async def store_refresh_token(user_id: str, token: str) -> None:
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"""Store refresh token in Redis"""
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try:
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token_hash = SecurityManager.hash_api_key(token) # Reuse hash method
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key = f"refresh_token:{user_id}:{token_hash}"
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# Store with expiration matching JWT refresh token expiry
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expire_seconds = settings.JWT_REFRESH_TOKEN_EXPIRE_DAYS * 24 * 60 * 60
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await redis_client.setex(key, expire_seconds, "valid")
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except Exception as e:
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logger.error(f"Error storing refresh token: {e}")
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@staticmethod
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async def is_refresh_token_valid(user_id: str, token: str) -> bool:
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"""Check if refresh token is still valid in Redis"""
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try:
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token_hash = SecurityManager.hash_api_key(token)
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key = f"refresh_token:{user_id}:{token_hash}"
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exists = await redis_client.exists(key)
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return bool(exists)
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except Exception as e:
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logger.error(f"Error checking refresh token validity: {e}")
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return False
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@staticmethod
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async def revoke_refresh_token(user_id: str, token: str) -> None:
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"""Revoke refresh token by removing from Redis"""
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try:
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token_hash = SecurityManager.hash_api_key(token)
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key = f"refresh_token:{user_id}:{token_hash}"
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await redis_client.delete(key)
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logger.debug(f"Revoked refresh token for user {user_id}")
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except Exception as e:
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logger.error(f"Error revoking refresh token: {e}") |