github.com/erda-project/erda-infra@v1.0.10-0.20240327085753-f3a249292aeb/pkg/mysqldriver/tls.go (about)

     1  // Copyright (c) 2021 Terminus, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package mysqldriver
    16  
    17  import (
    18  	"crypto/tls"
    19  	"crypto/x509"
    20  	"fmt"
    21  	"io/ioutil"
    22  
    23  	"github.com/go-sql-driver/mysql"
    24  )
    25  
    26  // OpenTLS according to the passed parameters, decide whether to register tls config for mysql driver
    27  func OpenTLS(tlsName, mysqlCaCertPath, mysqlClientCertPath, mysqlClientKeyPath string) error {
    28  	if tlsName == "" || mysqlCaCertPath == "" {
    29  		return nil
    30  	}
    31  
    32  	rootCertPool := x509.NewCertPool()
    33  	pem, err := ioutil.ReadFile(mysqlCaCertPath)
    34  	if err != nil {
    35  		return err
    36  	}
    37  	if ok := rootCertPool.AppendCertsFromPEM(pem); !ok {
    38  		return fmt.Errorf("failed to append PEM")
    39  	}
    40  
    41  	if mysqlClientCertPath == "" || mysqlClientKeyPath == "" {
    42  		// skip client cert
    43  		err = mysql.RegisterTLSConfig(tlsName, &tls.Config{
    44  			RootCAs: rootCertPool,
    45  		})
    46  		return err
    47  	}
    48  
    49  	clientCert := make([]tls.Certificate, 0, 1)
    50  	certs, err := tls.LoadX509KeyPair(mysqlClientCertPath, mysqlClientKeyPath)
    51  	if err != nil {
    52  		return fmt.Errorf("failed to append client PEM %v", err)
    53  	}
    54  	clientCert = append(clientCert, certs)
    55  	// two-way encryption
    56  	err = mysql.RegisterTLSConfig(tlsName, &tls.Config{
    57  		RootCAs:      rootCertPool,
    58  		Certificates: clientCert,
    59  	})
    60  	return err
    61  }