github.com/lrills/helm@v2.8.1+incompatible/cmd/helm/verify.go (about) 1 /* 2 Copyright 2016 The Kubernetes Authors All rights reserved. 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 "errors" 20 "io" 21 22 "github.com/spf13/cobra" 23 24 "k8s.io/helm/pkg/downloader" 25 ) 26 27 const verifyDesc = ` 28 Verify that the given chart has a valid provenance file. 29 30 Provenance files provide crytographic verification that a chart has not been 31 tampered with, and was packaged by a trusted provider. 32 33 This command can be used to verify a local chart. Several other commands provide 34 '--verify' flags that run the same validation. To generate a signed package, use 35 the 'helm package --sign' command. 36 ` 37 38 type verifyCmd struct { 39 keyring string 40 chartfile string 41 42 out io.Writer 43 } 44 45 func newVerifyCmd(out io.Writer) *cobra.Command { 46 vc := &verifyCmd{out: out} 47 48 cmd := &cobra.Command{ 49 Use: "verify [flags] PATH", 50 Short: "verify that a chart at the given path has been signed and is valid", 51 Long: verifyDesc, 52 RunE: func(cmd *cobra.Command, args []string) error { 53 if len(args) == 0 { 54 return errors.New("a path to a package file is required") 55 } 56 vc.chartfile = args[0] 57 return vc.run() 58 }, 59 } 60 61 f := cmd.Flags() 62 f.StringVar(&vc.keyring, "keyring", defaultKeyring(), "keyring containing public keys") 63 64 return cmd 65 } 66 67 func (v *verifyCmd) run() error { 68 _, err := downloader.VerifyChart(v.chartfile, v.keyring) 69 return err 70 }