generate.go

Documentation: github.com/chaos-mesh/chaos-mesh/pkg/chaosctl/physicalmachine

     1  // Copyright 2021 Chaos Mesh Authors.
     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  
    16  package physicalmachine
    17  
    18  import (
    19  	"crypto"
    20  	"crypto/x509"
    21  	"os"
    22  
    23  	"github.com/pkg/errors"
    24  	"github.com/spf13/cobra"
    25  )
    26  
    27  type PhysicalMachineGenerateOptions struct {
    28  	outputPath string
    29  	caCertFile string
    30  	caKeyFile  string
    31  }
    32  
    33  func NewPhysicalMachineGenerateCmd() (*cobra.Command, error) {
    34  	generateOption := &PhysicalMachineGenerateOptions{}
    35  
    36  	generateCmd := &cobra.Command{
    37  		Use:           `generate`,
    38  		Short:         `Generate TLS certs for certain physical machine`,
    39  		Long:          `Generate TLS certs for certain physical machine (please execute this command on the certain physical machine)`,
    40  		SilenceErrors: true,
    41  		SilenceUsage:  true,
    42  		RunE: func(cmd *cobra.Command, args []string) error {
    43  			if err := generateOption.Validate(); err != nil {
    44  				return err
    45  			}
    46  			return generateOption.Run()
    47  		},
    48  	}
    49  	generateCmd.PersistentFlags().StringVar(&generateOption.outputPath, "path", "/etc/chaosd/pki", "path to save generated certs")
    50  	generateCmd.PersistentFlags().StringVar(&generateOption.caCertFile, "cacert", "", "file path to cacert file")
    51  	generateCmd.PersistentFlags().StringVar(&generateOption.caKeyFile, "cakey", "", "file path to cakey file")
    52  	return generateCmd, nil
    53  }
    54  
    55  func (o *PhysicalMachineGenerateOptions) Validate() error {
    56  	if len(o.caCertFile) == 0 {
    57  		return errors.New("--cacert must be specified")
    58  	}
    59  	if len(o.caKeyFile) == 0 {
    60  		return errors.New("--cakey must be specified")
    61  	}
    62  	return nil
    63  }
    64  
    65  func (o *PhysicalMachineGenerateOptions) Run() error {
    66  	caCert, caKey, err := GetChaosdCAFileFromFile(o.caCertFile, o.caKeyFile)
    67  	if err != nil {
    68  		return err
    69  	}
    70  
    71  	serverCert, serverKey, err := NewCertAndKey(caCert, caKey)
    72  	if err != nil {
    73  		return err
    74  	}
    75  
    76  	return WriteCertAndKey(o.outputPath, ChaosdPkiName, serverCert, serverKey)
    77  }
    78  
    79  func GetChaosdCAFileFromFile(caCertFile, caKeyFile string) (*x509.Certificate, crypto.Signer, error) {
    80  	certData, err := os.ReadFile(caCertFile)
    81  	if err != nil {
    82  		return nil, nil, errors.Wrap(err, "cannot read cert file")
    83  	}
    84  
    85  	keyData, err := os.ReadFile(caKeyFile)
    86  	if err != nil {
    87  		return nil, nil, errors.Wrap(err, "cannot read private key file")
    88  	}
    89  	return ParseCertAndKey(certData, keyData)
    90  }
    91