87 lines
3.5 KiB
Python
87 lines
3.5 KiB
Python
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"""认证接口：验证码、登录、登出、当前用户。"""
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from typing import Annotated
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from fastapi import APIRouter, Depends, Request
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from app.api.deps import DbSession, get_current_user, get_raw_token
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from app.core.response import ApiResponse, ok
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from app.models import User
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from app.repositories.user_repository import get_role_codes
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from app.schemas.auth import CaptchaOut, CurrentUserOut, LoginIn, LoginOut
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from app.services import auth_service, captcha_service
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router = APIRouter(prefix="/auth", tags=["认证"])
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def _client_ip(request: Request) -> str | None:
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"""取客户端 IP。
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当前取直连地址。生产环境经 Nginx 反代后直连地址会变成代理地址，
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届时需改为读取 `X-Forwarded-For` 的**第一个**值 —— 且必须确保该头
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由网关覆写，否则客户端可以伪造。此改动留到部署阶段一并处理。
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"""
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return request.client.host if request.client else None
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@router.get("/captcha", response_model=ApiResponse[CaptchaOut], summary="获取图形验证码")
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def get_captcha() -> ApiResponse[CaptchaOut]:
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"""签发图形验证码。无需认证。
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图片以 base64 内联返回而非单独 URL：保证 id 与图片成对产生，
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避免前端分两次请求时拿到不匹配的组合。
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"""
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captcha_id, image_base64, expires_in = captcha_service.issue()
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return ok(CaptchaOut(captcha_id=captcha_id, image_base64=image_base64, expires_in=expires_in))
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@router.post("/login", response_model=ApiResponse[LoginOut], summary="登录")
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def login(payload: LoginIn, request: Request, session: DbSession) -> ApiResponse[LoginOut]:
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"""账号 + 密码 + 图形验证码登录。
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失败一律返回 **400 或 403，绝不使用 401**：前端的 401 拦截器会清空令牌
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并跳转登录页，若登录接口自身返回 401，用户输错一次密码就会触发
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「清空 + 跳转 + 报错」的组合动作，登录页反复重挂载、验证码反复刷新。
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另注意：验证码经 GETDEL 消费后即失效，**前端必须在登录失败后刷新验证码**，
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否则第二次提交必然报「验证码错误」。
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"""
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result = auth_service.login(
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session,
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username=payload.username,
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password=payload.password,
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captcha_id=payload.captcha_id,
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captcha_code=payload.captcha_code,
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ip=_client_ip(request),
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user_agent=request.headers.get("user-agent"),
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)
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return ok(result, message="登录成功")
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@router.post("/logout", response_model=ApiResponse[None], summary="登出")
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def logout(
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token: Annotated[str, Depends(get_raw_token)],
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_current_user: Annotated[User, Depends(get_current_user)],
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) -> ApiResponse[None]:
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"""登出：把当前令牌加入黑名单，使其立即失效。
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同时依赖 `get_current_user` 做真实鉴权 —— 仅凭原始令牌字符串不能证明
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它是有效的（可能已过期或已被拉黑）。
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"""
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auth_service.logout(token)
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return ok(message="已退出登录")
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@router.get("/me", response_model=ApiResponse[CurrentUserOut], summary="当前登录用户")
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def me(current_user: Annotated[User, Depends(get_current_user)]) -> ApiResponse[CurrentUserOut]:
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"""返回当前登录用户的信息与角色。前端刷新页面后用它恢复会话。"""
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return ok(
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CurrentUserOut(
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id=current_user.id,
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username=current_user.username,
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real_name=current_user.real_name,
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roles=get_role_codes(current_user),
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last_login_time=current_user.last_login_time,
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)
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)
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