vendor/google.golang.org/grpc/credentials/credentials_util_go17.go

   1 // +build go1.7
   2 // +build !go1.8
   3
   4 /*
   5  *
   6  * Copyright 2016 gRPC authors.
   7  *
   8  * Licensed under the Apache License, Version 2.0 (the "License");
   9  * you may not use this file except in compliance with the License.
  10  * You may obtain a copy of the License at
  11  *
  12  *     http://www.apache.org/licenses/LICENSE-2.0
  13  *
  14  * Unless required by applicable law or agreed to in writing, software
  15  * distributed under the License is distributed on an "AS IS" BASIS,
  16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  17  * See the License for the specific language governing permissions and
  18  * limitations under the License.
  19  *
  20  */
  21
  22 package credentials
  23
  24 import (
  25         "crypto/tls"
  26 )
  27
  28 // cloneTLSConfig returns a shallow clone of the exported
  29 // fields of cfg, ignoring the unexported sync.Once, which
  30 // contains a mutex and must not be copied.
  31 //
  32 // If cfg is nil, a new zero tls.Config is returned.
  33 func cloneTLSConfig(cfg *tls.Config) *tls.Config {
  34         if cfg == nil {
  35                 return &tls.Config{}
  36         }
  37         return &tls.Config{
  38                 Rand:                        cfg.Rand,
  39                 Time:                        cfg.Time,
  40                 Certificates:                cfg.Certificates,
  41                 NameToCertificate:           cfg.NameToCertificate,
  42                 GetCertificate:              cfg.GetCertificate,
  43                 RootCAs:                     cfg.RootCAs,
  44                 NextProtos:                  cfg.NextProtos,
  45                 ServerName:                  cfg.ServerName,
  46                 ClientAuth:                  cfg.ClientAuth,
  47                 ClientCAs:                   cfg.ClientCAs,
  48                 InsecureSkipVerify:          cfg.InsecureSkipVerify,
  49                 CipherSuites:                cfg.CipherSuites,
  50                 PreferServerCipherSuites:    cfg.PreferServerCipherSuites,
  51                 SessionTicketsDisabled:      cfg.SessionTicketsDisabled,
  52                 SessionTicketKey:            cfg.SessionTicketKey,
  53                 ClientSessionCache:          cfg.ClientSessionCache,
  54                 MinVersion:                  cfg.MinVersion,
  55                 MaxVersion:                  cfg.MaxVersion,
  56                 CurvePreferences:            cfg.CurvePreferences,
  57                 DynamicRecordSizingDisabled: cfg.DynamicRecordSizingDisabled,
  58                 Renegotiation:               cfg.Renegotiation,
  59         }
  60 }