124 lines
3.7 KiB
Python
124 lines
3.7 KiB
Python
"""认证服务。"""
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from datetime import UTC, datetime, timedelta
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from jose import JWTError, jwt
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from pwdlib import PasswordHash
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from pwdlib.hashers.argon2 import Argon2Hasher
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from sqlalchemy import select
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from sqlalchemy.ext.asyncio import AsyncSession
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from app.core.config import settings
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from app.core.errors import AppError
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from app.core.ids import new_user_id
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from app.models.rbac import Permission, RolePermission, UserRole
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from app.models.user import User
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_pwd = PasswordHash([Argon2Hasher()])
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def hash_password(plain: str) -> str:
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return _pwd.hash(plain)
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def verify_password(plain: str, hash: str) -> bool:
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return _pwd.verify(plain, hash)
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def _jwt_secret() -> str:
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secret = settings.jwt_secret
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if not secret:
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raise AppError("service_unavailable", "JWT 未配置。")
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return secret
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def create_access_token(subject: str, extra: dict | None = None) -> str:
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secret = _jwt_secret()
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now = datetime.now(UTC)
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payload = {
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"sub": subject,
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"type": "access",
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"iat": now,
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"exp": now + timedelta(seconds=settings.access_token_ttl),
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**(extra or {}),
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}
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return jwt.encode(payload, secret, algorithm="HS256")
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def create_refresh_token(subject: str) -> str:
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secret = _jwt_secret()
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now = datetime.now(UTC)
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payload = {
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"sub": subject,
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"type": "refresh",
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"iat": now,
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"exp": now + timedelta(seconds=settings.refresh_token_ttl),
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}
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return jwt.encode(payload, secret, algorithm="HS256")
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def decode_token(token: str) -> dict:
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secret = _jwt_secret()
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try:
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return jwt.decode(token, secret, algorithms=["HS256"])
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except JWTError:
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raise AppError("unauthorized", "Token 无效或已过期。") from None
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async def authenticate_user(db: AsyncSession, username: str, password: str) -> User:
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result = await db.execute(select(User).where(User.username == username))
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user = result.scalar_one_or_none()
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if user is None:
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raise AppError("unauthorized", "用户名或密码错误。")
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if not user.is_active:
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raise AppError("unauthorized", "用户已被禁用。")
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if not verify_password(password, user.password_hash):
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raise AppError("unauthorized", "用户名或密码错误。")
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return user
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async def get_user_by_id(db: AsyncSession, user_id: str) -> User | None:
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result = await db.execute(select(User).where(User.id == user_id))
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return result.scalar_one_or_none()
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async def create_user(
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db: AsyncSession,
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username: str,
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email: str,
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password: str,
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is_admin: bool = False,
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) -> User:
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# 检查用户名和邮箱是否已使用
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result = await db.execute(
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select(User).where((User.username == username) | (User.email == email))
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)
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existing = result.scalar_one_or_none()
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if existing is not None:
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if existing.username == username:
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raise AppError("conflict", "用户名已被注册。")
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raise AppError("conflict", "邮箱已被注册。")
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user = User(
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id=new_user_id(),
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username=username,
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email=email,
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password_hash=hash_password(password),
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is_active=True,
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is_admin=is_admin,
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)
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db.add(user)
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await db.flush()
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return user
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async def get_user_permissions(db: AsyncSession, user_id: str) -> list[str]:
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"""查询用户的所有权限（通过角色继承），返回 ``resource:action`` 字符串列表。"""
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result = await db.execute(
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select(Permission)
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.join(RolePermission, Permission.id == RolePermission.permission_id)
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.join(UserRole, RolePermission.role_id == UserRole.role_id)
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.where(UserRole.user_id == user_id)
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)
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return [p.code for p in result.scalars().all()]
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