IAM-08: benutzerprofil-login-oberflaeche (login+2fa/passwort-reset/profil-backend-handler + web/account next.js-frontend auf shl-01)
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@@ -0,0 +1,164 @@
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package totp
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import (
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"encoding/json"
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"net/http"
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"gitea.perlbach24.de/scripte/nexarch/internal/auth"
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"gitea.perlbach24.de/scripte/nexarch/internal/user"
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)
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// Handler stellt Login (inklusive optionalem zweiten Faktor) und die
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// 2FA-Einrichtung als HTTP-Endpunkte bereit (IAM-08). Ersetzt auth.Handler.Login
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// nicht (der bleibt fuer Faelle ohne 2FA-Bedarf nutzbar), bietet aber den
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// EINEN Login-Endpunkt, den das Frontend tatsaechlich aufruft — LoginWithTOTP
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// deckt beide Faelle (mit/ohne 2FA) bereits ab.
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type Handler struct {
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users *user.TenantUserStore
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totp *Store
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login *auth.LoginService
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issuer string // fuer die otpauth://-Provisioning-URI (Akzeptanzkriterium 1)
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}
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func NewHandler(users *user.TenantUserStore, totpStore *Store, login *auth.LoginService, issuer string) *Handler {
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return &Handler{users: users, totp: totpStore, login: login, issuer: issuer}
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}
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type loginRequest struct {
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Email string `json:"email"`
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Password string `json:"password"`
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TOTPCode string `json:"totp_code"`
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}
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type loginErrorResponse struct {
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// Error ist bewusst IMMER dieselbe generische Meldung fuer falsches
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// Passwort/Token (Akzeptanzkriterium 3 / Pruefung 1) — Code unterscheidet
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// intern zwischen "second_factor_required" (Formular soll TOTP-Feld
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// einblenden) und "invalid_credentials" (alles andere), ohne dem Client
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// mehr ueber den tatsaechlichen Fehlgrund zu verraten.
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Error string `json:"error"`
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Code string `json:"code"`
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}
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// Login ist der einzige Login-Endpunkt des Frontends (Akzeptanzkriterium 1).
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func (h *Handler) Login(w http.ResponseWriter, r *http.Request) {
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var req loginRequest
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if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
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http.Error(w, "ungueltige Anfrage", http.StatusBadRequest)
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return
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}
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token, err := LoginWithTOTP(r.Context(), h.users, h.totp, h.login, req.Email, req.Password, req.TOTPCode)
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if err != nil {
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w.Header().Set("Content-Type", "application/json")
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if err == ErrSecondFactorRequired {
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w.WriteHeader(http.StatusUnauthorized)
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_ = json.NewEncoder(w).Encode(loginErrorResponse{
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Error: "Anmeldedaten oder Code ungültig.",
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Code: "second_factor_required",
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})
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return
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}
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w.WriteHeader(http.StatusUnauthorized)
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_ = json.NewEncoder(w).Encode(loginErrorResponse{
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Error: "Anmeldedaten oder Code ungültig.",
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Code: "invalid_credentials",
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})
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return
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}
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http.SetCookie(w, &http.Cookie{
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Name: auth.CookieName,
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Value: token,
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Path: "/",
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HttpOnly: true,
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Secure: true,
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SameSite: http.SameSiteStrictMode,
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MaxAge: int(auth.AccessTokenTTL.Seconds()),
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})
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w.WriteHeader(http.StatusOK)
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}
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type statusResponse struct {
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Enabled bool `json:"enabled"`
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}
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// Status liefert, ob 2FA fuer den angemeldeten Benutzer aktiv ist — fuer die
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// Profilseite (Akzeptanzkriterium 2: zeigt an, ob Einrichtung schon
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// stattgefunden hat). Muss hinter auth.RequireAuth haengen.
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func (h *Handler) Status(w http.ResponseWriter, r *http.Request) {
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claims, ok := auth.ClaimsFromContext(r.Context())
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if !ok {
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http.Error(w, "nicht angemeldet", http.StatusUnauthorized)
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return
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}
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enabled, err := h.totp.IsEnabled(r.Context(), claims.UserID)
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if err != nil {
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http.Error(w, "status konnte nicht ermittelt werden", http.StatusInternalServerError)
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return
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}
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w.Header().Set("Content-Type", "application/json")
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_ = json.NewEncoder(w).Encode(statusResponse{Enabled: enabled})
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}
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type setupBeginResponse struct {
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Secret string `json:"secret"`
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ProvisioningURI string `json:"provisioning_uri"`
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}
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// SetupBegin startet die 2FA-Einrichtung (Akzeptanzkriterium 2) — muss hinter
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// auth.RequireAuth haengen.
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func (h *Handler) SetupBegin(w http.ResponseWriter, r *http.Request) {
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claims, ok := auth.ClaimsFromContext(r.Context())
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if !ok {
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http.Error(w, "nicht angemeldet", http.StatusUnauthorized)
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return
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}
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u, err := h.users.Get(r.Context(), claims.UserID)
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if err != nil {
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http.Error(w, "benutzer nicht gefunden", http.StatusNotFound)
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return
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}
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secret, uri, err := h.totp.BeginSetup(r.Context(), claims.UserID, h.issuer, u.Email)
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if err != nil {
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http.Error(w, "einrichtung konnte nicht gestartet werden", http.StatusInternalServerError)
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return
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}
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w.Header().Set("Content-Type", "application/json")
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_ = json.NewEncoder(w).Encode(setupBeginResponse{Secret: secret, ProvisioningURI: uri})
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}
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type setupConfirmRequest struct {
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Code string `json:"code"`
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}
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type setupConfirmResponse struct {
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RecoveryCodes []string `json:"recovery_codes"`
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}
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// SetupConfirm bestaetigt die Einrichtung und liefert die Wiederherstellungscodes
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// EINMALIG im Klartext (Akzeptanzkriterium 2) — muss hinter auth.RequireAuth haengen.
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func (h *Handler) SetupConfirm(w http.ResponseWriter, r *http.Request) {
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claims, ok := auth.ClaimsFromContext(r.Context())
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if !ok {
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http.Error(w, "nicht angemeldet", http.StatusUnauthorized)
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return
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}
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var req setupConfirmRequest
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if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
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http.Error(w, "ungueltige Anfrage", http.StatusBadRequest)
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return
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}
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codes, err := h.totp.ConfirmSetup(r.Context(), claims.UserID, req.Code)
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if err != nil {
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http.Error(w, "Code ungültig.", http.StatusBadRequest)
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return
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}
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w.Header().Set("Content-Type", "application/json")
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_ = json.NewEncoder(w).Encode(setupConfirmResponse{RecoveryCodes: codes})
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}
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