673 lines
25 KiB
Python
673 lines
25 KiB
Python
"""OIDC 服务模块。
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统一封装 OIDC 配置、工具能力和认证业务处理逻辑
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"""
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import hashlib
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import os
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import secrets
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import time
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import urllib.parse
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from typing import Any
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from urllib.parse import urlencode
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import httpx
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from fastapi import HTTPException, Request, status
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from fastapi.responses import RedirectResponse
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from pydantic import BaseModel, Field
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from sqlalchemy import select
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from sqlalchemy.exc import IntegrityError
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from yuxi.repositories.user_repository import UserRepository
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from yuxi.storage.postgres.models_business import Department, User
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from yuxi.utils.datetime_utils import utc_now_naive
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from yuxi.utils.logging_config import logger
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from server.utils.auth_utils import AuthUtils
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from server.utils.common_utils import log_operation
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# 前端 OIDC 回调路由路径（与 web/src/router/index.js 中的路由保持一致）
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FRONTEND_CALLBACK_PATH = "/auth/oidc/callback"
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# 登录页路径
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FRONTEND_LOGIN_PATH = "/login"
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class OIDCConfig(BaseModel):
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"""OIDC 配置模型"""
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enabled: bool = Field(default=False, description="是否启用 OIDC 认证")
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issuer_url: str = Field(default="", description="OIDC Provider 的 issuer URL")
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client_id: str = Field(default="", description="OIDC Client ID")
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client_secret: str = Field(default="", description="OIDC Client Secret")
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redirect_uri: str = Field(default="", description="OIDC 回调 URL")
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authorization_endpoint: str = Field(default="", description="授权端点 URL")
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token_endpoint: str = Field(default="", description="Token 端点 URL")
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userinfo_endpoint: str = Field(default="", description="UserInfo 端点 URL")
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end_session_endpoint: str = Field(default="", description="登出端点 URL")
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provider_name: str = Field(default="OIDC登录", description="认证源名称，显示在登录按钮上的文字")
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scopes: str = Field(default="openid profile email", description="请求的 scope")
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auto_create_user: bool = Field(default=True, description="是否自动创建用户")
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default_role: str = Field(default="user", description="OIDC 用户的默认角色")
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default_department: str = Field(default="OIDC用户", description="OIDC 用户的默认部门")
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username_claim: str = Field(default="preferred_username", description="用户名映射字段")
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email_claim: str = Field(default="email", description="邮箱映射字段")
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name_claim: str = Field(default="name", description="姓名映射字段")
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@classmethod
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def from_env(cls) -> "OIDCConfig":
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"""从环境变量加载配置"""
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def _env(name: str, default: str = "") -> str:
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return os.environ.get(name, default).strip()
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enabled = os.environ.get("OIDC_ENABLED", "false").lower() == "true"
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if not enabled:
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return cls(enabled=False)
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return cls(
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enabled=enabled,
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provider_name=_env("OIDC_PROVIDER_NAME", "OIDC登录"),
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issuer_url=_env("OIDC_ISSUER_URL"),
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client_id=_env("OIDC_CLIENT_ID"),
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client_secret=_env("OIDC_CLIENT_SECRET"),
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redirect_uri=_env("OIDC_REDIRECT_URI"),
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authorization_endpoint=_env("OIDC_AUTHORIZATION_ENDPOINT"),
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token_endpoint=_env("OIDC_TOKEN_ENDPOINT"),
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userinfo_endpoint=_env("OIDC_USERINFO_ENDPOINT"),
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end_session_endpoint=_env("OIDC_END_SESSION_ENDPOINT"),
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scopes=_env("OIDC_SCOPES", "openid profile email"),
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auto_create_user=os.environ.get("OIDC_AUTO_CREATE_USER", "true").lower() == "true",
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default_role=_env("OIDC_DEFAULT_ROLE", "user"),
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default_department=_env("OIDC_DEFAULT_DEPARTMENT", "OIDC用户"),
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username_claim=_env("OIDC_USERNAME_CLAIM", "preferred_username"),
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email_claim=_env("OIDC_EMAIL_CLAIM", "email"),
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name_claim=_env("OIDC_NAME_CLAIM", "name"),
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)
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def is_configured(self) -> bool:
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"""检查登录链接生成所需配置是否完整"""
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if not self.enabled:
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return False
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# 生成登录链接只要求 client_id + (issuer_url 或 authorization_endpoint)
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return bool(self.client_id and (self.issuer_url or self.authorization_endpoint))
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def is_token_exchange_configured(self) -> bool:
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"""检查授权码换 token 所需配置是否完整"""
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if not self.enabled:
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return False
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# 回调换 token 需要 client_id + client_secret + (issuer_url 或 token_endpoint)
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return bool(self.client_id and self.client_secret and (self.issuer_url or self.token_endpoint))
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oidc_config = OIDCConfig.from_env()
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class OIDCProviderMetadata:
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"""OIDC Provider 元数据"""
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def __init__(self):
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self.authorization_endpoint: str | None = None
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self.token_endpoint: str | None = None
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self.userinfo_endpoint: str | None = None
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self.end_session_endpoint: str | None = None
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self.last_error: str | None = None
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self._loaded = False
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async def load(self, issuer_url: str) -> bool:
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"""从 discovery 端点加载元数据"""
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if self._loaded:
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return True
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discovery_url = f"{issuer_url.rstrip('/')}/.well-known/openid-configuration"
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try:
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async with httpx.AsyncClient() as client:
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response = await client.get(discovery_url, timeout=30.0)
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response.raise_for_status()
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metadata = response.json()
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self.authorization_endpoint = metadata.get("authorization_endpoint")
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self.token_endpoint = metadata.get("token_endpoint")
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self.userinfo_endpoint = metadata.get("userinfo_endpoint")
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self.end_session_endpoint = metadata.get("end_session_endpoint")
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# 登录 URL 生成至少需要 authorization_endpoint。
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if not self.authorization_endpoint:
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self.last_error = "discovery 响应缺少 authorization_endpoint"
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logger.error(f"Failed to load OIDC discovery: {self.last_error}, url={discovery_url}")
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return False
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self._loaded = True
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self.last_error = None
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logger.info(f"OIDC discovery loaded from {discovery_url}")
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return True
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except Exception as e:
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self.last_error = f"{type(e).__name__}: {repr(e)}"
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logger.error(f"Failed to load OIDC discovery: {self.last_error}, url={discovery_url}")
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return False
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class OIDCUtils:
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"""OIDC 工具类"""
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_metadata: OIDCProviderMetadata | None = None
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_state_store: dict[str, dict[str, Any]] = {}
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_login_code_store: dict[str, dict[str, Any]] = {}
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_state_ttl_seconds = 300
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_login_code_ttl_seconds = 60
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_last_metadata_error: str | None = None
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@classmethod
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def _cleanup_expired_state(cls) -> None:
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now = time.time()
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expired = [k for k, v in cls._state_store.items() if v["expires_at"] <= now]
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for key in expired:
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cls._state_store.pop(key, None)
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@classmethod
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def _cleanup_expired_login_code(cls) -> None:
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now = time.time()
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expired = [k for k, v in cls._login_code_store.items() if v["expires_at"] <= now]
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for key in expired:
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cls._login_code_store.pop(key, None)
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@classmethod
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async def get_metadata(cls) -> OIDCProviderMetadata | None:
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"""获取 OIDC Provider 元数据"""
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if not oidc_config.enabled or not oidc_config.is_configured():
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cls._last_metadata_error = "OIDC 未启用或基础配置不完整"
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return None
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if cls._metadata is None:
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cls._metadata = OIDCProviderMetadata()
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if oidc_config.authorization_endpoint:
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cls._metadata.authorization_endpoint = oidc_config.authorization_endpoint
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cls._metadata.token_endpoint = oidc_config.token_endpoint
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cls._metadata.userinfo_endpoint = oidc_config.userinfo_endpoint
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cls._metadata.end_session_endpoint = oidc_config.end_session_endpoint
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cls._metadata._loaded = True
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cls._last_metadata_error = None
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else:
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success = await cls._metadata.load(oidc_config.issuer_url)
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if not success:
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cls._last_metadata_error = cls._metadata.last_error or "OIDC discovery 加载失败"
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return None
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if not cls._metadata.authorization_endpoint:
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cls._last_metadata_error = "OIDC 授权端点不可用"
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return None
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cls._last_metadata_error = None
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return cls._metadata
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@classmethod
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def get_last_metadata_error(cls) -> str | None:
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"""获取最近一次 OIDC 元数据加载错误"""
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return cls._last_metadata_error
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@classmethod
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def generate_state(cls, redirect_path: str = "/") -> str:
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"""生成 state 参数并存储"""
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cls._cleanup_expired_state()
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state = secrets.token_urlsafe(32)
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cls._state_store[state] = {
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"redirect_path": redirect_path,
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"expires_at": time.time() + cls._state_ttl_seconds,
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}
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return state
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@classmethod
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def verify_state(cls, state: str) -> dict[str, Any] | None:
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"""验证 state 参数"""
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state_data = cls._state_store.pop(state, None)
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if not state_data:
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return None
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if state_data["expires_at"] <= time.time():
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return None
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return {"redirect_path": state_data["redirect_path"]}
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@classmethod
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def generate_login_code(cls, payload: dict[str, Any]) -> str:
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"""生成一次性短期登录 code"""
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cls._cleanup_expired_login_code()
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code = secrets.token_urlsafe(32)
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cls._login_code_store[code] = {
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"payload": payload,
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"expires_at": time.time() + cls._login_code_ttl_seconds,
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}
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return code
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@classmethod
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def consume_login_code(cls, code: str) -> dict[str, Any] | None:
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"""消费一次性短期登录 code"""
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data = cls._login_code_store.pop(code, None)
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if not data:
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return None
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if data["expires_at"] <= time.time():
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return None
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return data["payload"]
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@classmethod
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def generate_nonce(cls) -> str:
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"""生成 nonce 参数"""
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return secrets.token_urlsafe(32)
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@classmethod
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async def build_authorization_url(cls, redirect_path: str = "/") -> str | None:
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"""构建授权 URL"""
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metadata = await cls.get_metadata()
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if not metadata or not metadata.authorization_endpoint:
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return None
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state = cls.generate_state(redirect_path)
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nonce = cls.generate_nonce()
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redirect_uri = oidc_config.redirect_uri
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if not redirect_uri:
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redirect_uri = "/api/auth/oidc/callback"
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params = {
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"client_id": oidc_config.client_id,
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"response_type": "code",
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"scope": oidc_config.scopes,
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"redirect_uri": redirect_uri,
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"state": state,
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"nonce": nonce,
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}
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query_string = urllib.parse.urlencode(params)
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return f"{metadata.authorization_endpoint}?{query_string}"
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@classmethod
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async def exchange_code_for_token(cls, code: str) -> dict[str, Any] | None:
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"""用授权码交换令牌"""
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metadata = await cls.get_metadata()
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if not metadata or not metadata.token_endpoint:
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return None
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redirect_uri = oidc_config.redirect_uri or "/api/auth/oidc/callback"
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data = {
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"grant_type": "authorization_code",
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"code": code,
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"redirect_uri": redirect_uri,
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"client_id": oidc_config.client_id,
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"client_secret": oidc_config.client_secret,
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}
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try:
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async with httpx.AsyncClient() as client:
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response = await client.post(
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metadata.token_endpoint,
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data=data,
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headers={"Content-Type": "application/x-www-form-urlencoded"},
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timeout=30.0,
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)
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response.raise_for_status()
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return response.json()
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except Exception as e:
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logger.error(f"Failed to exchange code for token: {e}")
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return None
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@classmethod
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async def get_userinfo(cls, access_token: str) -> dict[str, Any] | None:
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"""获取用户信息"""
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metadata = await cls.get_metadata()
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if not metadata or not metadata.userinfo_endpoint:
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return None
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try:
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async with httpx.AsyncClient() as client:
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response = await client.get(
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metadata.userinfo_endpoint,
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headers={"Authorization": f"Bearer {access_token}"},
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timeout=30.0,
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)
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response.raise_for_status()
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return response.json()
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except Exception as e:
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logger.error(f"Failed to get userinfo: {e}")
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return None
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@classmethod
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async def build_logout_url(cls, id_token: str | None = None) -> str | None:
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"""构建登出 URL"""
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metadata = await cls.get_metadata()
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if not metadata or not metadata.end_session_endpoint:
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return None
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params = {"client_id": oidc_config.client_id}
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if id_token:
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params["id_token_hint"] = id_token
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if oidc_config.redirect_uri:
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params["post_logout_redirect_uri"] = oidc_config.redirect_uri
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query_string = urllib.parse.urlencode(params)
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return f"{metadata.end_session_endpoint}?{query_string}"
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@classmethod
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def extract_user_info(cls, userinfo: dict[str, Any]) -> dict[str, Any]:
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"""从 userinfo 中提取用户信息"""
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sub = userinfo.get("sub", "")
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username = userinfo.get(oidc_config.username_claim, "")
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if not username:
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username = userinfo.get("preferred_username", "")
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if not username:
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username = userinfo.get("email", "").split("@")[0]
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if not username:
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username = sub[:20]
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email = userinfo.get(oidc_config.email_claim, "")
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if not email:
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email = userinfo.get("email", "")
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name = userinfo.get(oidc_config.name_claim, "")
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if not name:
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name = userinfo.get("name", "")
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if not name:
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name = username
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return {
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"sub": sub,
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"username": username,
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"email": email,
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"name": name,
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"raw": userinfo,
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}
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async def get_or_create_oidc_department(db) -> Department | None:
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"""获取或创建 OIDC 用户的默认部门"""
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dept_name = oidc_config.default_department
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result = await db.execute(select(Department).filter(Department.name == dept_name))
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dept = result.scalar_one_or_none()
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if not dept:
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dept = Department(
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name=dept_name,
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description=f"{dept_name}部门",
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)
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db.add(dept)
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try:
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await db.commit()
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await db.refresh(dept)
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logger.info(f"Created OIDC department: {dept_name}")
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except IntegrityError:
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await db.rollback()
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result = await db.execute(select(Department).filter(Department.name == dept_name))
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dept = result.scalar_one_or_none()
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return dept
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async def find_user_by_oidc_sub(db, sub: str) -> User | None:
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"""通过 OIDC sub 查找用户"""
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oidc_user_id = f"oidc:{sub}"
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result = await db.execute(select(User).filter(User.user_id == oidc_user_id, User.is_deleted == 0))
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user = result.scalar_one_or_none()
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if user:
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return user
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legacy_result = await db.execute(
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select(User).filter(User.user_id.like(f"{oidc_user_id}:%"), User.is_deleted == 0).order_by(User.id.asc())
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)
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legacy_users = list(legacy_result.scalars().all())
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if legacy_users:
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if len(legacy_users) > 1:
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logger.warning(f"Multiple legacy OIDC users matched for sub={sub}, use earliest id={legacy_users[0].id}")
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return legacy_users[0]
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return None
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async def find_deleted_oidc_user_by_sub(db, sub: str) -> User | None:
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"""查找已注销的 OIDC 账户（标准与历史后缀）"""
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oidc_user_id = f"oidc:{sub}"
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result = await db.execute(select(User).filter(User.user_id == oidc_user_id, User.is_deleted == 1))
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deleted_user = result.scalar_one_or_none()
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if deleted_user:
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return deleted_user
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legacy_result = await db.execute(
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select(User).filter(User.user_id.like(f"{oidc_user_id}:%"), User.is_deleted == 1).order_by(User.id.asc())
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)
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return legacy_result.scalar_one_or_none()
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async def build_unique_oidc_username(db, preferred_username: str, sub: str) -> str:
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"""为 OIDC 用户生成不冲突的用户名"""
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base_username = preferred_username.strip() if preferred_username else ""
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if not base_username:
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base_username = f"oidc_{sub[:8]}"
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result = await db.execute(select(User.id).filter(User.username == base_username))
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if result.scalar_one_or_none() is None:
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return base_username
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hash_suffix = hashlib.sha256(sub.encode()).hexdigest()[:6]
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candidate = f"{base_username}-{hash_suffix}"
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result = await db.execute(select(User.id).filter(User.username == candidate))
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if result.scalar_one_or_none() is None:
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return candidate
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for i in range(2, 100):
|
|
indexed_candidate = f"{candidate}-{i}"
|
|
result = await db.execute(select(User.id).filter(User.username == indexed_candidate))
|
|
if result.scalar_one_or_none() is None:
|
|
return indexed_candidate
|
|
|
|
raise HTTPException(
|
|
status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
|
|
detail="无法生成可用用户名，请联系管理员",
|
|
)
|
|
|
|
|
|
async def create_oidc_user(db, user_info: dict, department_id: int | None = None) -> User:
|
|
"""创建 OIDC 用户"""
|
|
user_repo = UserRepository()
|
|
|
|
sub = user_info["sub"]
|
|
preferred_username = user_info["name"] or user_info["username"]
|
|
user_id = f"oidc:{sub}"
|
|
|
|
random_password = secrets.token_urlsafe(32)
|
|
password_hash = AuthUtils.hash_password(random_password)
|
|
|
|
username = await build_unique_oidc_username(db, preferred_username, sub)
|
|
|
|
for retry_index in range(3):
|
|
try:
|
|
new_user = await user_repo.create(
|
|
{
|
|
"username": username,
|
|
"user_id": user_id,
|
|
"phone_number": None,
|
|
"avatar": None,
|
|
"password_hash": password_hash,
|
|
"role": oidc_config.default_role,
|
|
"department_id": department_id,
|
|
"last_login": utc_now_naive(),
|
|
}
|
|
)
|
|
logger.info(f"Created OIDC user: {new_user.username} ({user_id})")
|
|
return new_user
|
|
except IntegrityError:
|
|
existing_user = await find_user_by_oidc_sub(db, sub)
|
|
if existing_user:
|
|
return existing_user
|
|
username = await build_unique_oidc_username(db, f"{preferred_username}-{retry_index + 2}", sub)
|
|
|
|
raise HTTPException(
|
|
status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
|
|
detail="创建 OIDC 用户失败，请重试",
|
|
)
|
|
|
|
|
|
async def restore_deleted_oidc_user(db, deleted_user: User, user_info: dict) -> User:
|
|
"""恢复已注销的 OIDC 用户并返回可登录用户"""
|
|
preferred_username = user_info["name"] or user_info["username"]
|
|
|
|
deleted_user.is_deleted = 0
|
|
deleted_user.deleted_at = None
|
|
deleted_user.last_login = utc_now_naive()
|
|
deleted_user.phone_number = None
|
|
deleted_user.avatar = None
|
|
|
|
if deleted_user.username.startswith("已注销用户-"):
|
|
deleted_user.username = await build_unique_oidc_username(db, preferred_username, user_info["sub"])
|
|
|
|
if deleted_user.password_hash == "DELETED":
|
|
random_password = secrets.token_urlsafe(32)
|
|
deleted_user.password_hash = AuthUtils.hash_password(random_password)
|
|
|
|
await db.commit()
|
|
await db.refresh(deleted_user)
|
|
logger.info(f"Restored deleted OIDC user: {deleted_user.username} ({deleted_user.user_id})")
|
|
return deleted_user
|
|
|
|
|
|
async def update_oidc_user_login(db, user: User) -> None:
|
|
"""更新 OIDC 用户登录时间"""
|
|
user.last_login = utc_now_naive()
|
|
await db.commit()
|
|
|
|
|
|
def _redirect_to_callback(exchange_code: str) -> RedirectResponse:
|
|
"""成功后重定向到前端 OIDC 回调页面，仅携带一次性 code"""
|
|
url = f"{FRONTEND_CALLBACK_PATH}?{urlencode({'code': exchange_code})}"
|
|
return RedirectResponse(url=url, status_code=302)
|
|
|
|
|
|
def _redirect_to_login_with_error(error_message: str) -> RedirectResponse:
|
|
"""失败时重定向到登录页并携带错误信息"""
|
|
url = f"{FRONTEND_LOGIN_PATH}?{urlencode({'oidc_error': error_message})}"
|
|
return RedirectResponse(url=url, status_code=302)
|
|
|
|
|
|
async def get_oidc_config_handler():
|
|
"""获取 OIDC 配置（供前端使用）"""
|
|
if not oidc_config.enabled or not oidc_config.is_configured():
|
|
return {"enabled": False}
|
|
|
|
provider_name = oidc_config.provider_name
|
|
return {"enabled": True, "provider_name": provider_name}
|
|
|
|
|
|
async def oidc_callback_handler(code: str, state: str, db, request: Request | None = None):
|
|
"""处理 OIDC 回调 - 重定向到前端 Vue 路由"""
|
|
|
|
if not oidc_config.is_token_exchange_configured():
|
|
return _redirect_to_login_with_error("OIDC 配置不完整，请联系管理员")
|
|
|
|
if not OIDCUtils.verify_state(state):
|
|
return _redirect_to_login_with_error("登录会话已过期，请返回登录页重试")
|
|
|
|
token_response = await OIDCUtils.exchange_code_for_token(code)
|
|
if not token_response:
|
|
return _redirect_to_login_with_error("无法获取访问令牌，请返回登录页重试")
|
|
|
|
access_token = token_response.get("access_token")
|
|
if not access_token:
|
|
return _redirect_to_login_with_error("无法获取访问令牌，请返回登录页重试")
|
|
|
|
userinfo = await OIDCUtils.get_userinfo(access_token)
|
|
if not userinfo:
|
|
return _redirect_to_login_with_error("无法获取用户信息，请返回登录页重试")
|
|
|
|
extracted_info = OIDCUtils.extract_user_info(userinfo)
|
|
sub = extracted_info["sub"]
|
|
|
|
if not sub:
|
|
return _redirect_to_login_with_error("无法获取用户标识，请返回登录页重试")
|
|
|
|
user = await find_user_by_oidc_sub(db, sub)
|
|
|
|
if user:
|
|
await update_oidc_user_login(db, user)
|
|
logger.info(f"OIDC user logged in: {user.username}")
|
|
elif oidc_config.auto_create_user:
|
|
deleted_user = await find_deleted_oidc_user_by_sub(db, sub)
|
|
if deleted_user:
|
|
user = await restore_deleted_oidc_user(db, deleted_user, extracted_info)
|
|
logger.info(f"OIDC deleted user restored and logged in: {user.username}")
|
|
else:
|
|
dept = await get_or_create_oidc_department(db)
|
|
department_id = dept.id if dept else None
|
|
user = await create_oidc_user(db, extracted_info, department_id)
|
|
else:
|
|
return _redirect_to_login_with_error("用户未注册，请联系管理员开通账号")
|
|
|
|
if user.is_deleted:
|
|
return _redirect_to_login_with_error("该账户已注销")
|
|
|
|
token_data = {"sub": str(user.id)}
|
|
jwt_token = AuthUtils.create_access_token(token_data)
|
|
|
|
await log_operation(db, user.id, "OIDC 登录", request=request)
|
|
|
|
department_name = None
|
|
if user.department_id:
|
|
result = await db.execute(select(Department.name).filter(Department.id == user.department_id))
|
|
department_name = result.scalar_one_or_none()
|
|
|
|
response_data = {
|
|
"access_token": jwt_token,
|
|
"token_type": "bearer",
|
|
"user_id": user.id,
|
|
"username": user.username,
|
|
"user_id_login": user.user_id,
|
|
"phone_number": user.phone_number,
|
|
"avatar": user.avatar,
|
|
"role": user.role,
|
|
"department_id": user.department_id,
|
|
"department_name": department_name,
|
|
}
|
|
|
|
exchange_code = OIDCUtils.generate_login_code(response_data)
|
|
return _redirect_to_callback(exchange_code)
|
|
|
|
|
|
async def oidc_exchange_code_handler(code: str) -> dict:
|
|
"""用一次性 code 交换登录响应数据"""
|
|
token_data = OIDCUtils.consume_login_code(code)
|
|
if not token_data:
|
|
raise HTTPException(
|
|
status_code=status.HTTP_400_BAD_REQUEST,
|
|
detail="登录 code 无效或已过期，请重新登录",
|
|
)
|
|
return token_data
|
|
|
|
|
|
async def oidc_login_url_handler(redirect_path: str = "/"):
|
|
"""获取 OIDC 登录 URL"""
|
|
if not oidc_config.enabled or not oidc_config.is_configured():
|
|
raise HTTPException(
|
|
status_code=status.HTTP_503_SERVICE_UNAVAILABLE,
|
|
detail="OIDC 登录暂不可用，请联系管理员",
|
|
)
|
|
|
|
login_url = await OIDCUtils.build_authorization_url(redirect_path)
|
|
if not login_url:
|
|
metadata_error = OIDCUtils.get_last_metadata_error()
|
|
if metadata_error:
|
|
raise HTTPException(
|
|
status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
|
|
detail=f"生成登录链接失败：{metadata_error}",
|
|
)
|
|
raise HTTPException(
|
|
status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
|
|
detail="生成登录链接失败，请稍后重试或联系管理员",
|
|
)
|
|
|
|
return {"login_url": login_url}
|