gitee.com/mysnapcore/mysnapd@v0.1.0/cmd/snap/cmd_sign_build.go (about) 1 // -*- Mode: Go; indent-tabs-mode: t -*- 2 3 /* 4 * Copyright (C) 2014-2021 Canonical Ltd 5 * 6 * This program is free software: you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 3 as 8 * published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program. If not, see <http://www.gnu.org/licenses/>. 17 * 18 */ 19 20 package main 21 22 import ( 23 "fmt" 24 "time" 25 26 "github.com/jessevdk/go-flags" 27 28 // expected for digests 29 _ "golang.org/x/crypto/sha3" 30 31 "gitee.com/mysnapcore/mysnapd/asserts" 32 "gitee.com/mysnapcore/mysnapd/asserts/signtool" 33 "gitee.com/mysnapcore/mysnapd/i18n" 34 ) 35 36 type cmdSignBuild struct { 37 Positional struct { 38 Filename string 39 } `positional-args:"yes" required:"yes"` 40 41 // XXX complete DeveloperID and SnapID 42 DeveloperID string `long:"developer-id" required:"yes"` 43 SnapID string `long:"snap-id" required:"yes"` 44 KeyName keyName `short:"k" default:"default" ` 45 Grade string `long:"grade" choice:"devel" choice:"stable" default:"stable"` 46 } 47 48 var shortSignBuildHelp = i18n.G("Create a snap-build assertion") 49 var longSignBuildHelp = i18n.G(` 50 The sign-build command creates a snap-build assertion for the provided 51 snap file. 52 `) 53 54 func init() { 55 cmd := addCommand("sign-build", 56 shortSignBuildHelp, 57 longSignBuildHelp, 58 func() flags.Commander { 59 return &cmdSignBuild{} 60 }, map[string]string{ 61 // TRANSLATORS: This should not start with a lowercase letter. 62 "developer-id": i18n.G("Identifier of the signer"), 63 // TRANSLATORS: This should not start with a lowercase letter. 64 "snap-id": i18n.G("Identifier of the snap package associated with the build"), 65 // TRANSLATORS: This should not start with a lowercase letter. 66 "k": i18n.G("Name of the GnuPG key to use (defaults to 'default' as key name)"), 67 // TRANSLATORS: This should not start with a lowercase letter. 68 "grade": i18n.G("Grade states the build quality of the snap (defaults to 'stable')"), 69 }, []argDesc{{ 70 // TRANSLATORS: This needs to begin with < and end with > 71 name: i18n.G("<filename>"), 72 // TRANSLATORS: This should not start with a lowercase letter. 73 desc: i18n.G("Filename of the snap you want to assert a build for"), 74 }}) 75 cmd.hidden = true 76 } 77 78 func (x *cmdSignBuild) Execute(args []string) error { 79 if len(args) > 0 { 80 return ErrExtraArgs 81 } 82 83 snapDigest, snapSize, err := asserts.SnapFileSHA3_384(x.Positional.Filename) 84 if err != nil { 85 return err 86 } 87 88 keypairMgr, err := signtool.GetKeypairManager() 89 if err != nil { 90 return err 91 } 92 privKey, err := keypairMgr.GetByName(string(x.KeyName)) 93 if err != nil { 94 // TRANSLATORS: %q is the key name, %v the error message 95 return fmt.Errorf(i18n.G("cannot use %q key: %v"), x.KeyName, err) 96 } 97 98 pubKey := privKey.PublicKey() 99 timestamp := time.Now().Format(time.RFC3339) 100 101 headers := map[string]interface{}{ 102 "developer-id": x.DeveloperID, 103 "authority-id": x.DeveloperID, 104 "snap-sha3-384": snapDigest, 105 "snap-id": x.SnapID, 106 "snap-size": fmt.Sprintf("%d", snapSize), 107 "grade": x.Grade, 108 "timestamp": timestamp, 109 } 110 111 adb, err := asserts.OpenDatabase(&asserts.DatabaseConfig{ 112 KeypairManager: keypairMgr, 113 }) 114 if err != nil { 115 return fmt.Errorf(i18n.G("cannot open the assertions database: %v"), err) 116 } 117 118 a, err := adb.Sign(asserts.SnapBuildType, headers, nil, pubKey.ID()) 119 if err != nil { 120 return fmt.Errorf(i18n.G("cannot sign assertion: %v"), err) 121 } 122 123 _, err = Stdout.Write(asserts.Encode(a)) 124 if err != nil { 125 return err 126 } 127 128 return nil 129 }