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
|
package main
import (
"crypto/md5"
"crypto/sha256"
"errors"
"fmt"
"io"
"os"
"path/filepath"
"strings"
"go.wit.com/lib/debian"
"go.wit.com/lib/gui/shell"
"go.wit.com/lib/protobuf/zoopb"
"google.golang.org/protobuf/types/known/timestamppb"
)
func populateDebInfo(p *zoopb.Package) error {
// SIMPLE SANITY CHECKS
if p.DebInfo != nil {
// already added p.DebInfo
return nil
}
fullname := filepath.Join(me.pb.BaseDir, p.Filename)
cmd := []string{"dpkg", "-I", fullname}
r := shell.Run(cmd)
if r.Error != nil {
return r.Error
}
if r.Exit != 0 {
return errors.New("dpkg returned -1")
}
stat, err := os.Stat(fullname)
if err != nil {
return err
}
filedata, err := os.Open(fullname)
if err != nil {
return err
}
defer filedata.Close()
// SIMPLE SANITY CHECKS END
// SHA256 HASH
p.DebInfo = new(zoopb.DebInfo)
hSHA256 := sha256.New()
hMD5 := md5.New() // probably deprecate, but love md5sum too much
// hSHA1 := sha1.New() // deprecated
// TeeReader allows writing to multiple hashers at once
// multiWriter := io.MultiWriter(hMD5, hSHA1, hSHA256)
multiWriter := io.MultiWriter(hSHA256, hMD5)
if _, err := io.Copy(multiWriter, filedata); err != nil {
return err
}
p.DebInfo.SHA256 = fmt.Sprintf("%x", hSHA256.Sum(nil)) // should be the standard now
p.DebInfo.MD5SUM = fmt.Sprintf("%x", hMD5.Sum(nil)) // probably deprecate
// p.DebInfo.SHA1 = fmt.Sprintf("%x", hSHA1.Sum(nil)) // deprecated
// SHA256 HASH END
// set file create time
p.Ctime = timestamppb.New(stat.ModTime())
// PARSE "dpkg -I <p.Filename>", then exit as we are done
all := strings.Join(r.Stdout, "\n")
debian.ParseDpkgOutputIntoPB(p, all)
return nil
}
|
