certificates/authority/admin/api/middleware.go
2022-03-30 14:21:39 +02:00

99 lines
2.7 KiB
Go

package api
import (
"net/http"
"go.step.sm/linkedca"
"github.com/go-chi/chi"
"github.com/smallstep/certificates/api"
"github.com/smallstep/certificates/authority/admin"
"github.com/smallstep/certificates/authority/admin/db/nosql"
"github.com/smallstep/certificates/authority/provisioner"
)
// requireAPIEnabled is a middleware that ensures the Administration API
// is enabled before servicing requests.
func (h *Handler) requireAPIEnabled(next http.HandlerFunc) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
if !h.auth.IsAdminAPIEnabled() {
api.WriteError(w, admin.NewError(admin.ErrorNotImplementedType,
"administration API not enabled"))
return
}
next(w, r)
}
}
// extractAuthorizeTokenAdmin is a middleware that extracts and caches the bearer token.
func (h *Handler) extractAuthorizeTokenAdmin(next http.HandlerFunc) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
tok := r.Header.Get("Authorization")
if tok == "" {
api.WriteError(w, admin.NewError(admin.ErrorUnauthorizedType,
"missing authorization header token"))
return
}
adm, err := h.auth.AuthorizeAdminToken(r, tok)
if err != nil {
api.WriteError(w, err)
return
}
ctx := linkedca.NewContextWithAdmin(r.Context(), adm)
next(w, r.WithContext(ctx))
}
}
// loadProvisioner is a middleware that searches for a provisioner
// by name and stores it in the context.
func (h *Handler) loadProvisionerByName(next http.HandlerFunc) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
ctx := r.Context()
name := chi.URLParam(r, "provisionerName")
var (
p provisioner.Interface
err error
)
if p, err = h.auth.LoadProvisionerByName(name); err != nil {
api.WriteError(w, admin.WrapErrorISE(err, "error loading provisioner %s", name))
return
}
prov, err := h.adminDB.GetProvisioner(ctx, p.GetID())
if err != nil {
api.WriteError(w, err)
return
}
ctx = linkedca.NewContextWithProvisioner(ctx, prov)
next(w, r.WithContext(ctx))
}
}
// checkAction checks if an action is supported in standalone or not
func (h *Handler) checkAction(next http.HandlerFunc, supportedInStandalone bool) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
// actions allowed in standalone mode are always supported
if supportedInStandalone {
next(w, r)
return
}
// when an action is not supported in standalone mode and when
// using a nosql.DB backend, actions are not supported
if _, ok := h.adminDB.(*nosql.DB); ok {
api.WriteError(w, admin.NewError(admin.ErrorNotImplementedType,
"operation not supported in standalone mode"))
return
}
// continue to next http handler
next(w, r)
}
}