TIANHE
387 lines
14 KiB
Python
387 lines
14 KiB
Python
"""
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User Service - Multi-user management
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Handles user CRUD operations, password hashing, and role management.
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"""
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import hashlib
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import time
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import os
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from typing import Optional, Dict, Any, List
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from app.utils.db import get_db_connection
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from app.utils.logger import get_logger
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logger = get_logger(__name__)
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# Try to import bcrypt for secure password hashing
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try:
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import bcrypt
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HAS_BCRYPT = True
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except ImportError:
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HAS_BCRYPT = False
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logger.warning("bcrypt not installed. Using SHA256 for password hashing (less secure).")
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class UserService:
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"""User management service"""
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# Available roles (ordered by privilege level)
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ROLES = ['viewer', 'user', 'manager', 'admin']
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# Role permissions mapping
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ROLE_PERMISSIONS = {
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'viewer': ['dashboard', 'view'],
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'user': ['dashboard', 'view', 'indicator', 'backtest', 'strategy', 'portfolio'],
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'manager': ['dashboard', 'view', 'indicator', 'backtest', 'strategy', 'portfolio', 'settings'],
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'admin': ['dashboard', 'view', 'indicator', 'backtest', 'strategy', 'portfolio', 'settings', 'user_manage', 'credentials'],
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}
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def hash_password(self, password: str) -> str:
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"""Hash password using bcrypt (preferred) or SHA256 (fallback)"""
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if HAS_BCRYPT:
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salt = bcrypt.gensalt(rounds=12)
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return bcrypt.hashpw(password.encode('utf-8'), salt).decode('utf-8')
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else:
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# Fallback to SHA256 with salt
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salt = os.urandom(16).hex()
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hashed = hashlib.sha256((password + salt).encode('utf-8')).hexdigest()
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return f"sha256${salt}${hashed}"
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def verify_password(self, password: str, password_hash: str) -> bool:
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"""Verify password against hash"""
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if password_hash.startswith('$2b$') or password_hash.startswith('$2a$'):
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# bcrypt hash
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if HAS_BCRYPT:
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try:
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return bcrypt.checkpw(password.encode('utf-8'), password_hash.encode('utf-8'))
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except Exception:
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return False
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return False
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elif password_hash.startswith('sha256$'):
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# SHA256 fallback hash
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parts = password_hash.split('$')
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if len(parts) != 3:
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return False
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salt = parts[1]
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stored_hash = parts[2]
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computed = hashlib.sha256((password + salt).encode('utf-8')).hexdigest()
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return computed == stored_hash
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return False
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def get_user_by_id(self, user_id: int) -> Optional[Dict[str, Any]]:
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"""Get user by ID"""
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try:
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with get_db_connection() as db:
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cur = db.cursor()
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cur.execute(
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"""
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SELECT id, username, email, nickname, avatar, status, role,
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last_login_at, created_at, updated_at
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FROM qd_users WHERE id = ?
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""",
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(user_id,)
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)
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row = cur.fetchone()
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cur.close()
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return row
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except Exception as e:
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logger.error(f"get_user_by_id failed: {e}")
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return None
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def get_user_by_username(self, username: str) -> Optional[Dict[str, Any]]:
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"""Get user by username (includes password_hash for auth)"""
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try:
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with get_db_connection() as db:
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cur = db.cursor()
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cur.execute(
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"""
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SELECT id, username, password_hash, email, nickname, avatar,
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status, role, last_login_at, created_at, updated_at
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FROM qd_users WHERE username = ?
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""",
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(username,)
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)
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row = cur.fetchone()
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cur.close()
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return row
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except Exception as e:
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logger.error(f"get_user_by_username failed: {e}")
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return None
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def authenticate(self, username: str, password: str) -> Optional[Dict[str, Any]]:
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"""
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Authenticate user with username and password.
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Returns user info (without password_hash) if successful, None otherwise.
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"""
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user = self.get_user_by_username(username)
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if not user:
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return None
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if user.get('status') != 'active':
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logger.warning(f"Login attempt for disabled user: {username}")
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return None
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if not self.verify_password(password, user.get('password_hash', '')):
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return None
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# Update last login time
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try:
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with get_db_connection() as db:
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cur = db.cursor()
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cur.execute(
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"UPDATE qd_users SET last_login_at = NOW() WHERE id = ?",
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(user['id'],)
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)
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db.commit()
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cur.close()
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except Exception as e:
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logger.warning(f"Failed to update last_login_at: {e}")
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# Remove password_hash from return value
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user.pop('password_hash', None)
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return user
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def create_user(self, data: Dict[str, Any]) -> Optional[int]:
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"""
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Create a new user.
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Args:
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data: {
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username: str (required),
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password: str (required),
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email: str (optional),
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nickname: str (optional),
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role: str (optional, default 'user'),
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status: str (optional, default 'active')
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}
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Returns:
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New user ID or None if failed
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"""
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username = (data.get('username') or '').strip()
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password = data.get('password') or ''
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if not username or not password:
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raise ValueError("Username and password are required")
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if len(username) < 3 or len(username) > 50:
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raise ValueError("Username must be 3-50 characters")
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if len(password) < 6:
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raise ValueError("Password must be at least 6 characters")
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# Check if username already exists
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existing = self.get_user_by_username(username)
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if existing:
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raise ValueError("Username already exists")
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password_hash = self.hash_password(password)
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email = (data.get('email') or '').strip() or None
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nickname = (data.get('nickname') or '').strip() or username
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role = data.get('role', 'user')
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status = data.get('status', 'active')
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if role not in self.ROLES:
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role = 'user'
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try:
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with get_db_connection() as db:
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cur = db.cursor()
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cur.execute(
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"""
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INSERT INTO qd_users
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(username, password_hash, email, nickname, role, status, created_at, updated_at)
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VALUES (?, ?, ?, ?, ?, ?, NOW(), NOW())
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""",
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(username, password_hash, email, nickname, role, status)
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)
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db.commit()
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user_id = cur.lastrowid
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cur.close()
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# For PostgreSQL, get the ID differently
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if user_id is None:
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cur = db.cursor()
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cur.execute("SELECT id FROM qd_users WHERE username = ?", (username,))
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row = cur.fetchone()
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user_id = row['id'] if row else None
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cur.close()
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logger.info(f"Created user: {username} (id={user_id})")
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return user_id
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except Exception as e:
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logger.error(f"create_user failed: {e}")
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raise
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def update_user(self, user_id: int, data: Dict[str, Any]) -> bool:
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"""
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Update user information.
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Args:
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user_id: User ID
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data: Fields to update (email, nickname, avatar, role, status)
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"""
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allowed_fields = ['email', 'nickname', 'avatar', 'role', 'status']
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updates = []
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values = []
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for field in allowed_fields:
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if field in data:
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value = data[field]
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if field == 'role' and value not in self.ROLES:
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continue
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updates.append(f"{field} = ?")
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values.append(value)
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if not updates:
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return False
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updates.append("updated_at = NOW()")
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values.append(user_id)
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try:
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with get_db_connection() as db:
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cur = db.cursor()
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sql = f"UPDATE qd_users SET {', '.join(updates)} WHERE id = ?"
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cur.execute(sql, tuple(values))
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db.commit()
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cur.close()
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return True
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except Exception as e:
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logger.error(f"update_user failed: {e}")
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return False
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def change_password(self, user_id: int, old_password: str, new_password: str) -> bool:
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"""Change user password (requires old password verification)"""
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user = self.get_user_by_id(user_id)
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if not user:
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return False
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# Get full user with password_hash
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with get_db_connection() as db:
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cur = db.cursor()
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cur.execute("SELECT password_hash FROM qd_users WHERE id = ?", (user_id,))
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row = cur.fetchone()
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cur.close()
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if not row:
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return False
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if not self.verify_password(old_password, row['password_hash']):
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return False
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return self.reset_password(user_id, new_password)
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def reset_password(self, user_id: int, new_password: str) -> bool:
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"""Reset user password (admin operation, no old password required)"""
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if len(new_password) < 6:
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raise ValueError("Password must be at least 6 characters")
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password_hash = self.hash_password(new_password)
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try:
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with get_db_connection() as db:
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cur = db.cursor()
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cur.execute(
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"UPDATE qd_users SET password_hash = ?, updated_at = NOW() WHERE id = ?",
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(password_hash, user_id)
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)
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db.commit()
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cur.close()
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return True
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except Exception as e:
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logger.error(f"reset_password failed: {e}")
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return False
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def delete_user(self, user_id: int) -> bool:
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"""Delete a user"""
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try:
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with get_db_connection() as db:
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cur = db.cursor()
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cur.execute("DELETE FROM qd_users WHERE id = ?", (user_id,))
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db.commit()
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cur.close()
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return True
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except Exception as e:
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logger.error(f"delete_user failed: {e}")
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return False
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def list_users(self, page: int = 1, page_size: int = 20) -> Dict[str, Any]:
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"""List all users with pagination"""
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offset = (page - 1) * page_size
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try:
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with get_db_connection() as db:
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cur = db.cursor()
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# Get total count
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cur.execute("SELECT COUNT(*) as count FROM qd_users")
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total = cur.fetchone()['count']
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# Get users
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cur.execute(
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"""
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SELECT id, username, email, nickname, avatar, status, role,
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last_login_at, created_at, updated_at
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FROM qd_users
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ORDER BY id DESC
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LIMIT ? OFFSET ?
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""",
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(page_size, offset)
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)
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users = cur.fetchall()
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cur.close()
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return {
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'items': users,
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'total': total,
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'page': page,
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'page_size': page_size,
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'total_pages': (total + page_size - 1) // page_size
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}
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except Exception as e:
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logger.error(f"list_users failed: {e}")
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return {'items': [], 'total': 0, 'page': 1, 'page_size': page_size, 'total_pages': 0}
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def get_user_permissions(self, role: str) -> List[str]:
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"""Get permissions for a role"""
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return self.ROLE_PERMISSIONS.get(role, self.ROLE_PERMISSIONS['viewer'])
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def ensure_admin_exists(self):
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"""
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Ensure at least one admin user exists.
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Creates admin using ADMIN_USER/ADMIN_PASSWORD from env if no users exist.
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"""
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try:
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with get_db_connection() as db:
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cur = db.cursor()
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cur.execute("SELECT COUNT(*) as count FROM qd_users")
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count = cur.fetchone()['count']
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cur.close()
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if count == 0:
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# Create admin using env credentials
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admin_user = os.getenv('ADMIN_USER', 'admin')
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admin_password = os.getenv('ADMIN_PASSWORD', 'admin123')
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self.create_user({
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'username': admin_user,
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'password': admin_password,
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'nickname': 'Administrator',
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'role': 'admin',
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'status': 'active'
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})
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logger.info(f"Created admin user: {admin_user}")
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except Exception as e:
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logger.error(f"ensure_admin_exists failed: {e}")
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# Global singleton
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_user_service = None
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def get_user_service() -> UserService:
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"""Get UserService singleton"""
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global _user_service
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if _user_service is None:
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_user_service = UserService()
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return _user_service
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