mirror of
https://github.com/gravitational/teleport.git
synced 2026-10-31 20:39:37 +08:00
Przemko Robakowski
cf8e6ac7c2
This change adds enterprise license indicator in certificates generated for Windows Desktop access.
86 lines
2.7 KiB
Go
86 lines
2.7 KiB
Go
/*
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Copyright 2021 Gravitational, Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package auth
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import (
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"context"
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"crypto/x509"
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"crypto/x509/pkix"
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"github.com/gravitational/trace"
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"github.com/gravitational/teleport/api/client/proto"
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"github.com/gravitational/teleport/api/types"
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"github.com/gravitational/teleport/lib/modules"
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"github.com/gravitational/teleport/lib/tlsca"
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)
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// GenerateWindowsDesktopCert generates client certificate for Windows RDP
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// authentication.
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func (s *Server) GenerateWindowsDesktopCert(ctx context.Context, req *proto.WindowsDesktopCertRequest) (*proto.WindowsDesktopCertResponse, error) {
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if !modules.GetModules().Features().Desktop {
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return nil, trace.AccessDenied(
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"this Teleport cluster is not licensed for desktop access, please contact the cluster administrator")
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}
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csr, err := tlsca.ParseCertificateRequestPEM(req.CSR)
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if err != nil {
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return nil, trace.Wrap(err)
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}
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clusterName, err := s.GetClusterName()
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if err != nil {
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return nil, trace.Wrap(err)
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}
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userCA, err := s.GetCertAuthority(ctx, types.CertAuthID{
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Type: types.UserCA,
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DomainName: clusterName.GetClusterName(),
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}, true)
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if err != nil {
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return nil, trace.Wrap(err)
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}
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caCert, signer, err := s.GetKeyStore().GetTLSCertAndSigner(ctx, userCA)
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if err != nil {
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return nil, trace.Wrap(err)
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}
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tlsCA, err := tlsca.FromCertAndSigner(caCert, signer)
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if err != nil {
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return nil, trace.Wrap(err)
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}
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// See https://docs.microsoft.com/en-us/troubleshoot/windows-server/windows-security/enabling-smart-card-logon-third-party-certification-authorities
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// for cert requirements for Windows authn.
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certReq := tlsca.CertificateRequest{
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Clock: s.clock,
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PublicKey: csr.PublicKey,
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Subject: csr.Subject,
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NotAfter: s.clock.Now().UTC().Add(req.TTL.Get()),
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ExtraExtensions: csr.Extensions,
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KeyUsage: x509.KeyUsageDigitalSignature,
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// CRL is required for Windows smartcard certs.
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CRLDistributionPoints: []string{req.CRLEndpoint},
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}
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certReq.ExtraExtensions = append(certReq.ExtraExtensions, pkix.Extension{
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Id: tlsca.LicenseOID,
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Value: []byte(modules.GetModules().BuildType()),
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})
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cert, err := tlsCA.GenerateCertificate(certReq)
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if err != nil {
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return nil, trace.Wrap(err)
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}
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return &proto.WindowsDesktopCertResponse{
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Cert: cert,
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}, nil
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}
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