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CCS Admin
d5db84d93f
Adds "Passwort vergessen?" to login page with email-based password reset flow. Backend generates secure token (SHA-256 hashed, 1h expiry), sends reset link via SMTP, and validates on submission. Includes rate limiting (3 requests/hour/email), audit logging, and account unlock on successful reset. New ResetPasswordPage with password confirmation. New DB table: password_reset_tokens (migration 008). Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
381 lines
13 KiB
Python
381 lines
13 KiB
Python
"""Auth API router: login, register, refresh, logout, MFA, password change, reset."""
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import logging
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import os
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import secrets
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import time
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from datetime import datetime, timedelta, timezone
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from fastapi import APIRouter, Depends, File, HTTPException, Request, UploadFile
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from sqlalchemy.orm import Session
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from app.config import get_settings
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from app.core.dependencies import get_current_user
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from app.core.security import hash_password, hash_token
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from app.database import get_db
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from app.models.user import PasswordResetToken, User
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from app.schemas.auth import (
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ChangePasswordRequest,
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ForgotPasswordRequest,
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LoginRequest,
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MFADisableRequest,
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MFASetupResponse,
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MFAVerifyRequest,
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RefreshRequest,
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RegisterRequest,
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ResetPasswordRequest,
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TokenResponse,
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)
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from app.schemas.user import ProfileUpdate, UserResponse
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from app.services.audit_service import log_action
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from app.services.auth_service import (
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activate_mfa,
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authenticate_user,
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change_password,
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create_tokens,
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disable_mfa,
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refresh_access_token,
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register_user,
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revoke_refresh_token,
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setup_mfa,
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update_profile,
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)
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from app.services.notification_service import send_email
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logger = logging.getLogger(__name__)
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settings = get_settings()
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router = APIRouter()
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# ---------------------------------------------------------------------------
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# Public endpoints (no auth required)
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# ---------------------------------------------------------------------------
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@router.post("/login", response_model=TokenResponse)
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def login(data: LoginRequest, request: Request, db: Session = Depends(get_db)):
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"""Authenticate with email/password (+ optional MFA) and receive tokens."""
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user = authenticate_user(db, data.email, data.password, data.mfa_code)
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access, refresh = create_tokens(db, user)
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log_action(
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db,
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user_id=user.id,
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action="login",
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entity_type="user",
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entity_id=user.id,
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ip_address=request.client.host if request.client else None,
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user_agent=request.headers.get("user-agent"),
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)
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return TokenResponse(
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access_token=access,
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refresh_token=refresh,
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user=UserResponse.model_validate(user),
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)
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@router.post("/register", response_model=UserResponse)
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def register(data: RegisterRequest, db: Session = Depends(get_db)):
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"""Self-service registration (invitation token or whitelisted domain)."""
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user = register_user(
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db,
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username=data.username,
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email=data.email,
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password=data.password,
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invitation_token=data.invitation_token,
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)
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return UserResponse.model_validate(user)
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@router.post("/refresh", response_model=TokenResponse)
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def refresh(data: RefreshRequest, db: Session = Depends(get_db)):
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"""Exchange a valid refresh token for a new access token."""
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access, user = refresh_access_token(db, data.refresh_token)
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return TokenResponse(
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access_token=access,
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refresh_token=data.refresh_token,
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user=UserResponse.model_validate(user),
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)
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# ---------------------------------------------------------------------------
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# Password reset (public, no auth required)
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# ---------------------------------------------------------------------------
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RESET_TOKEN_EXPIRE_HOURS = 1
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RESET_MAX_REQUESTS_PER_HOUR = 3
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@router.post("/forgot-password")
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def forgot_password(data: ForgotPasswordRequest, request: Request, db: Session = Depends(get_db)):
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"""Request a password reset link via email.
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Always returns 200 to prevent user enumeration.
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"""
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user = (
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db.query(User)
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.filter(User.email == data.email, User.is_active == True) # noqa: E712
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.first()
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)
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if user:
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# Rate limiting: max N requests per email per hour
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one_hour_ago = datetime.now(timezone.utc) - timedelta(hours=1)
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recent_count = (
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db.query(PasswordResetToken)
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.filter(
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PasswordResetToken.user_id == user.id,
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PasswordResetToken.created_at >= one_hour_ago,
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)
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.count()
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)
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if recent_count < RESET_MAX_REQUESTS_PER_HOUR:
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# Generate token
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raw_token = secrets.token_urlsafe(32)
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token_h = hash_token(raw_token)
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prt = PasswordResetToken(
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user_id=user.id,
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token_hash=token_h,
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expires_at=datetime.now(timezone.utc) + timedelta(hours=RESET_TOKEN_EXPIRE_HOURS),
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)
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db.add(prt)
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db.commit()
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# Send email
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reset_url = f"{settings.FRONTEND_BASE_URL}/reset-password?token={raw_token}"
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send_email(
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to=user.email,
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subject="[DAK Portal] Passwort zurücksetzen",
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body=(
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f"Hallo {user.first_name or user.username},\n\n"
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f"Sie haben eine Passwort-Zurücksetzung angefordert.\n\n"
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f"Klicken Sie auf folgenden Link, um ein neues Passwort zu vergeben:\n"
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f"{reset_url}\n\n"
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f"Der Link ist {RESET_TOKEN_EXPIRE_HOURS} Stunde gültig.\n\n"
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f"Falls Sie diese Anfrage nicht gestellt haben, ignorieren Sie diese E-Mail.\n\n"
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f"Mit freundlichen Grüßen\n"
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f"DAK Zweitmeinungs-Portal"
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),
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)
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log_action(
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db, user_id=user.id, action="password_reset_requested",
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entity_type="user", entity_id=user.id,
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ip_address=request.client.host if request.client else None,
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user_agent=request.headers.get("user-agent"),
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)
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return {"detail": "Falls ein Konto mit dieser E-Mail existiert, wurde ein Reset-Link gesendet."}
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@router.post("/reset-password")
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def reset_password(data: ResetPasswordRequest, request: Request, db: Session = Depends(get_db)):
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"""Reset password using a valid reset token."""
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if len(data.new_password) < 8:
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raise HTTPException(status_code=422, detail="Das Passwort muss mindestens 8 Zeichen lang sein.")
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token_h = hash_token(data.token)
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prt = (
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db.query(PasswordResetToken)
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.filter(
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PasswordResetToken.token_hash == token_h,
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PasswordResetToken.used_at == None, # noqa: E711
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PasswordResetToken.expires_at >= datetime.now(timezone.utc),
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)
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.first()
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)
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if not prt:
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raise HTTPException(status_code=400, detail="Ungültiger oder abgelaufener Reset-Link.")
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user = db.query(User).filter(User.id == prt.user_id).first()
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if not user:
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raise HTTPException(status_code=400, detail="Benutzer nicht gefunden.")
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# Update password
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user.password_hash = hash_password(data.new_password)
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user.must_change_password = False
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user.failed_login_attempts = 0
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user.locked_until = None
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# Invalidate all reset tokens for this user
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db.query(PasswordResetToken).filter(
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PasswordResetToken.user_id == user.id,
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PasswordResetToken.used_at == None, # noqa: E711
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).update({"used_at": datetime.now(timezone.utc)})
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db.commit()
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log_action(
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db, user_id=user.id, action="password_reset_completed",
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entity_type="user", entity_id=user.id,
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ip_address=request.client.host if request.client else None,
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user_agent=request.headers.get("user-agent"),
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)
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return {"detail": "Passwort erfolgreich zurückgesetzt. Sie können sich jetzt anmelden."}
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# ---------------------------------------------------------------------------
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# Authenticated endpoints
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# ---------------------------------------------------------------------------
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@router.post("/logout")
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def logout(
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data: RefreshRequest,
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request: Request,
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db: Session = Depends(get_db),
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current_user: User = Depends(get_current_user),
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):
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"""Revoke the supplied refresh token (logout)."""
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revoke_refresh_token(db, data.refresh_token)
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log_action(
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db,
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user_id=current_user.id,
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action="logout",
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entity_type="user",
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entity_id=current_user.id,
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ip_address=request.client.host if request.client else None,
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user_agent=request.headers.get("user-agent"),
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)
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return {"detail": "Logged out"}
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@router.post("/mfa/setup", response_model=MFASetupResponse)
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def mfa_setup(current_user: User = Depends(get_current_user)):
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"""Generate a new TOTP secret and QR provisioning URI.
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The client must store the returned *secret* and send it back together
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with a valid TOTP code to ``POST /mfa/verify`` to finalise activation.
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"""
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secret, uri = setup_mfa(current_user)
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return MFASetupResponse(secret=secret, qr_uri=uri)
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@router.post("/mfa/verify")
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def mfa_verify(
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data: MFAVerifyRequest,
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db: Session = Depends(get_db),
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current_user: User = Depends(get_current_user),
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):
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"""Verify the TOTP code against the secret from /mfa/setup and enable MFA.
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MFA setup flow:
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1. ``POST /mfa/setup`` --> ``{secret, qr_uri}``
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2. User scans QR in authenticator app.
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3. ``POST /mfa/verify`` with ``{secret, code}`` --> MFA enabled.
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"""
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activate_mfa(db, current_user, data.secret, data.code)
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return {"detail": "MFA enabled"}
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@router.delete("/mfa")
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def mfa_disable(
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data: MFADisableRequest,
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db: Session = Depends(get_db),
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current_user: User = Depends(get_current_user),
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):
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"""Disable MFA on the authenticated user's account (requires password)."""
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disable_mfa(db, current_user, data.password)
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return {"detail": "MFA disabled"}
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@router.post("/change-password")
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def change_password_endpoint(
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data: ChangePasswordRequest,
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db: Session = Depends(get_db),
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current_user: User = Depends(get_current_user),
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):
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"""Change the authenticated user's password."""
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change_password(db, current_user, data.old_password, data.new_password)
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return {"detail": "Password changed"}
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@router.get("/me", response_model=UserResponse)
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def me(current_user: User = Depends(get_current_user)):
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"""Return the currently authenticated user's profile."""
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return UserResponse.model_validate(current_user)
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@router.put("/profile", response_model=UserResponse)
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def update_profile_endpoint(
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data: ProfileUpdate,
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db: Session = Depends(get_db),
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current_user: User = Depends(get_current_user),
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):
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"""Update the authenticated user's profile."""
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update_data = data.model_dump(exclude_unset=True)
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user = update_profile(db, current_user, **update_data)
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return UserResponse.model_validate(user)
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# ---------------------------------------------------------------------------
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# Avatar upload / delete
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# ---------------------------------------------------------------------------
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ALLOWED_IMAGE_TYPES = {"image/jpeg", "image/png"}
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MAX_AVATAR_SIZE = 2 * 1024 * 1024 # 2MB
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@router.post("/avatar", response_model=UserResponse)
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async def upload_avatar(
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file: UploadFile = File(...),
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db: Session = Depends(get_db),
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current_user: User = Depends(get_current_user),
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):
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"""Upload or replace the authenticated user's avatar image."""
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if file.content_type not in ALLOWED_IMAGE_TYPES:
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raise HTTPException(status_code=400, detail="Only JPG and PNG images are allowed")
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contents = await file.read()
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if len(contents) > MAX_AVATAR_SIZE:
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raise HTTPException(status_code=400, detail="Image must be smaller than 2MB")
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ext = "jpg" if file.content_type == "image/jpeg" else "png"
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filename = f"{current_user.id}_{int(time.time())}.{ext}"
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uploads_dir = os.path.join(
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os.path.dirname(os.path.dirname(os.path.dirname(__file__))),
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"uploads", "avatars",
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)
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os.makedirs(uploads_dir, exist_ok=True)
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# Delete old avatar file if exists
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if current_user.avatar_url:
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old_file = os.path.join(
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os.path.dirname(os.path.dirname(os.path.dirname(__file__))),
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current_user.avatar_url.lstrip("/"),
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)
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if os.path.isfile(old_file):
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os.remove(old_file)
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filepath = os.path.join(uploads_dir, filename)
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with open(filepath, "wb") as f:
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f.write(contents)
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current_user.avatar_url = f"/uploads/avatars/{filename}"
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db.commit()
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db.refresh(current_user)
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return UserResponse.model_validate(current_user)
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@router.delete("/avatar", response_model=UserResponse)
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def delete_avatar(
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db: Session = Depends(get_db),
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current_user: User = Depends(get_current_user),
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):
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"""Remove the authenticated user's avatar image."""
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if current_user.avatar_url:
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old_file = os.path.join(
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os.path.dirname(os.path.dirname(os.path.dirname(__file__))),
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current_user.avatar_url.lstrip("/"),
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)
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if os.path.isfile(old_file):
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os.remove(old_file)
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current_user.avatar_url = None
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db.commit()
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db.refresh(current_user)
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return UserResponse.model_validate(current_user)
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