github.com/stefanmcshane/helm@v0.0.0-20221213002717-88a4a2c6e77d/cmd/helm/verify.go (about)

     1  /*
     2  Copyright The Helm Authors.
     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 main
    17  
    18  import (
    19  	"fmt"
    20  	"io"
    21  
    22  	"github.com/spf13/cobra"
    23  
    24  	"github.com/stefanmcshane/helm/cmd/helm/require"
    25  	"github.com/stefanmcshane/helm/pkg/action"
    26  )
    27  
    28  const verifyDesc = `
    29  Verify that the given chart has a valid provenance file.
    30  
    31  Provenance files provide cryptographic verification that a chart has not been
    32  tampered with, and was packaged by a trusted provider.
    33  
    34  This command can be used to verify a local chart. Several other commands provide
    35  '--verify' flags that run the same validation. To generate a signed package, use
    36  the 'helm package --sign' command.
    37  `
    38  
    39  func newVerifyCmd(out io.Writer) *cobra.Command {
    40  	client := action.NewVerify()
    41  
    42  	cmd := &cobra.Command{
    43  		Use:   "verify PATH",
    44  		Short: "verify that a chart at the given path has been signed and is valid",
    45  		Long:  verifyDesc,
    46  		Args:  require.ExactArgs(1),
    47  		ValidArgsFunction: func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
    48  			if len(args) == 0 {
    49  				// Allow file completion when completing the argument for the path
    50  				return nil, cobra.ShellCompDirectiveDefault
    51  			}
    52  			// No more completions, so disable file completion
    53  			return nil, cobra.ShellCompDirectiveNoFileComp
    54  		},
    55  		RunE: func(cmd *cobra.Command, args []string) error {
    56  			err := client.Run(args[0])
    57  			if err != nil {
    58  				return err
    59  			}
    60  
    61  			fmt.Fprint(out, client.Out)
    62  
    63  			return nil
    64  		},
    65  	}
    66  
    67  	cmd.Flags().StringVar(&client.Keyring, "keyring", defaultKeyring(), "keyring containing public keys")
    68  
    69  	return cmd
    70  }