Files
nexarch/workflow/internal/bearerauth/bearerauth.go
T
patrickandClaude Sonnet 5.5 698f0490f2
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RBAC #369: Rolle aus dem Token durchreichen, Policy-Pruefung fail-closed
workflow bearerauth setzt X-User-Role nur aus den Claims (Client-Header werden
entfernt); taskapi und connectorsetupapi fragen mit dieser Rolle, Default user.
Migration 0029: connect.setup.write nur fuer tenant_admin.
ai-app, workflow-app, connect-app starten ohne POLICY_URL nicht mehr, ausser
mit NEXARCH_<MODUL>_APP_POLICY_DISABLED=1.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
2026-10-28 23:08:57 +01:00

72 lines
2.1 KiB
Go

// Package bearerauth setzt die Identitaet der Workflow-APIs aus einem
// verifizierten Core-Modul-Token. Die Handler lesen weiter X-User-Id und
// X-Tenant-Slug; die Middleware ueberschreibt beide aus den Claims, sodass ein
// Client sie nicht frei setzen kann. X-User-Role kommt nur aus dem Token.
package bearerauth
import (
"encoding/json"
"errors"
"net/http"
"strings"
"gitea.perlbach24.de/scripte/nexarch/common/moduleauth"
)
const (
headerUser = "X-User-Id"
headerTenant = "X-Tenant-Slug"
headerRole = "X-User-Role"
)
// Middleware verlangt fuer Anfragen mit Authorization: Bearer ein gueltiges
// Token. Ohne Bearer werden X-User-Id und X-Tenant-Slug entfernt, ausser
// allowHeaderAuth ist gesetzt (Uebergang, bis alle Clients Bearer senden).
func Middleware(v *moduleauth.Verifier, allowHeaderAuth bool, next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
r.Header.Del(headerRole)
token, ok := bearer(r)
if !ok {
if !allowHeaderAuth {
r.Header.Del(headerUser)
r.Header.Del(headerTenant)
}
next.ServeHTTP(w, r)
return
}
if v == nil {
writeError(w, http.StatusUnauthorized, "nicht angemeldet")
return
}
claims, err := v.Verify(r.Context(), token)
if err != nil {
if errors.Is(err, moduleauth.ErrInvalidToken) {
writeError(w, http.StatusUnauthorized, "nicht angemeldet")
} else {
writeError(w, http.StatusServiceUnavailable, "identitaetsdienst nicht erreichbar")
}
return
}
r.Header.Set(headerUser, claims.Subject)
r.Header.Set(headerTenant, claims.Tenant)
if claims.Role != "" {
r.Header.Set(headerRole, claims.Role)
}
next.ServeHTTP(w, r)
})
}
func bearer(r *http.Request) (string, bool) {
h := r.Header.Get("Authorization")
if len(h) > 7 && strings.EqualFold(h[:7], "bearer ") {
return strings.TrimSpace(h[7:]), true
}
return "", false
}
func writeError(w http.ResponseWriter, status int, message string) {
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(status)
_ = json.NewEncoder(w).Encode(map[string]string{"error": message})
}