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tls_config.go
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tls_config.go
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// Copyright 2022 TiKV Project 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 utils
import (
"crypto/tls"
"github.com/pingcap/errors"
"github.com/spf13/pflag"
"github.com/tikv/client-go/v2/config"
)
const (
// flagCA is the name of TLS CA flag.
flagCA = "ca"
// flagCert is the name of TLS cert flag.
flagCert = "cert"
// flagKey is the name of TLS key flag.
flagKey = "key"
)
// TLSConfig is the common configuration for TLS connection.
type TLSConfig struct {
CA string `json:"ca" toml:"ca"`
Cert string `json:"cert" toml:"cert"`
Key string `json:"key" toml:"key"`
}
// IsEnabled checks if TLS open or not.
func (tls *TLSConfig) IsEnabled() bool {
return tls.CA != ""
}
// ToTLSConfig generate tls.Config.
func (tls *TLSConfig) ToTLSConfig() (*tls.Config, error) {
security := config.NewSecurity(tls.CA, tls.Cert, tls.Key, []string{})
tlsConfig, err := security.ToTLSConfig()
if err != nil {
return nil, errors.Trace(err)
}
return tlsConfig, nil
}
// DefineTLSFlags define flags for tls config
func DefineTLSFlags(flags *pflag.FlagSet) {
flags.String(flagCA, "", "CA certificate path for TLS connection")
flags.String(flagCert, "", "Certificate path for TLS connection")
flags.String(flagKey, "", "Private key path for TLS connection")
}
// ParseFromFlags parses the TLS config from the flag set.
func (tls *TLSConfig) ParseFromFlags(flags *pflag.FlagSet) (err error) {
tls.CA, err = flags.GetString(flagCA)
if err != nil {
return err
}
tls.Cert, err = flags.GetString(flagCert)
if err != nil {
return err
}
tls.Key, err = flags.GetString(flagKey)
if err != nil {
return err
}
return nil
}