tokenserver/appengine/impl/certchecker/rpc_is_revoked_cert.go

// Copyright 2016 The LUCI Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package certchecker

import (
	"context"
	"math/big"

	"google.golang.org/grpc/codes"
	"google.golang.org/grpc/status"

	"go.chromium.org/luci/tokenserver/api/admin/v1"
)

// IsRevokedCertRPC implements CertificateAuthorities.IsRevokedCert RPC method.
type IsRevokedCertRPC struct {
}

// IsRevokedCert says whether a certificate serial number is in the CRL.
func (r *IsRevokedCertRPC) IsRevokedCert(c context.Context, req *admin.IsRevokedCertRequest) (*admin.IsRevokedCertResponse, error) {
	sn := big.Int{}
	if _, ok := sn.SetString(req.Sn, 0); !ok {
		return nil, status.Errorf(codes.InvalidArgument, "can't parse 'sn'")
	}

	checker, err := GetCertChecker(c, req.Ca)
	if err != nil {
		if details, ok := err.(Error); ok && details.Reason == NoSuchCA {
			return nil, status.Errorf(codes.NotFound, "no such CA: %q", req.Ca)
		}
		return nil, status.Errorf(codes.Internal, "failed to check %q CRL - %s", req.Ca, err)
	}

	revoked, err := checker.CRL.IsRevokedSN(c, &sn)
	if err != nil {
		return nil, status.Errorf(codes.Internal, "failed to check %q CRL - %s", req.Ca, err)
	}

	return &admin.IsRevokedCertResponse{Revoked: revoked}, nil
}