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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"
"go.wit.com/log"
"google.golang.org/protobuf/types/known/timestamppb"
)
// os.Chdir(me.mirrorsDir)
// makes the dists/ for 'apt update'
func doMakeDists() (string, error) {
var s string
var err error
os.Chdir(me.pb.BaseDir)
/*
for p := range me.pb.IterAll() {
p.Print()
return "printed one out", nil
}
s, err := me.pb.MakeDists()
*/
return s, err
}
// make a list of the newest .deb files
func doMakePackagesFile(all *zoopb.Packages) string {
var pfile string
for p := range all.IterAll() {
var controlfile string
parts, err := zoopb.GetDebInfoFields(p)
if err != nil {
log.Info(err)
}
for _, varname := range parts {
varname, varval := debian.GetKeyFromPackagePB(p, varname)
varval = strings.TrimSpace(varval)
if varval == "" {
continue
}
controlfile += log.Sprintf("%s: %s\n", varname, varval)
}
controlfile += log.Sprintf("\n")
pfile += controlfile
}
return pfile
}
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
}
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