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 } 61
