1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
|
// Copyright 2017 Northern.tech AS
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package handlers
import (
"archive/tar"
"encoding/json"
"io"
"os"
"path/filepath"
"time"
"github.com/mendersoftware/mender-artifact/artifact"
"github.com/pkg/errors"
)
// DataFile represents the minimum set of attributes each update file
// must contain. Some of those might be empty though for specific update types.
type DataFile struct {
// name of the update file
Name string
// size of the update file
Size int64
// last modification time
Date time.Time
// checksum of the update file
Checksum []byte
}
type Composer interface {
GetUpdateFiles() [](*DataFile)
GetType() string
ComposeHeader(tw *tar.Writer, no int) error
ComposeData(tw *tar.Writer, no int) error
}
type Installer interface {
GetUpdateFiles() [](*DataFile)
GetType() string
ReadHeader(r io.Reader, path string) error
Install(r io.Reader, info *os.FileInfo) error
Copy() Installer
}
func parseFiles(r io.Reader) (*artifact.Files, error) {
files := new(artifact.Files)
if _, err := io.Copy(files, r); err != nil {
return nil, errors.Wrap(err, "update: error reading files")
}
if err := files.Validate(); err != nil {
return nil, err
}
return files, nil
}
func match(pattern, name string) bool {
match, err := filepath.Match(pattern, name)
if err != nil {
return false
}
return match
}
func writeFiles(tw *tar.Writer, updFiles []string, dir string) error {
files := new(artifact.Files)
for _, u := range updFiles {
files.FileList = append(files.FileList, u)
}
sa := artifact.NewTarWriterStream(tw)
if err := sa.Write(artifact.ToStream(files),
filepath.Join(dir, "files")); err != nil {
return errors.Wrapf(err, "writer: can not tar files")
}
return nil
}
func writeTypeInfo(tw *tar.Writer, updateType string, dir string) error {
tInfo := artifact.TypeInfo{Type: updateType}
info, err := json.Marshal(&tInfo)
if err != nil {
return errors.Wrapf(err, "update: can not create type-info")
}
w := artifact.NewTarWriterStream(tw)
if err := w.Write(info, filepath.Join(dir, "type-info")); err != nil {
return errors.Wrapf(err, "update: can not tar type-info")
}
return nil
}
func writeChecksums(tw *tar.Writer, files [](*DataFile), dir string) error {
for _, f := range files {
w := artifact.NewTarWriterStream(tw)
if err := w.Write(f.Checksum,
filepath.Join(dir, filepath.Base(f.Name)+".sha256sum")); err != nil {
return errors.Wrapf(err, "update: can not tar checksum for %v", f)
}
}
return nil
}
|
