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|
package main
import (
"bufio"
"crypto/md5"
"crypto/sha256"
"errors"
"fmt"
"io"
"os"
"path/filepath"
"strings"
"go.wit.com/lib/cobol"
"go.wit.com/lib/gui/shell"
"go.wit.com/lib/protobuf/zoopb"
"go.wit.com/log"
"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
starting := true
all := strings.Join(r.Stdout, "\n")
scanner := bufio.NewScanner(strings.NewReader(all))
for scanner.Scan() {
line := scanner.Text()
parts := strings.Fields(line)
if starting {
if parts[0] == "new" {
if argv.Verbose {
log.Printf("new: %v\n", parts)
}
// skip the first dpkg -I line
continue
}
if parts[0] == "size" {
if argv.Verbose {
log.Printf("size: %v\n", parts)
}
// todo: make this correct
p.DebInfo.Size = parts[1]
p.DebInfo.InstalledSize = parts[1]
// scan all the entries from size
for scanner.Scan() {
line = scanner.Text()
parts = strings.Fields(line)
if strings.HasPrefix(line, " ") {
if argv.Verbose {
log.Printf("sizeline: %v\n", parts)
}
continue
}
starting = false
break
}
}
if starting {
if argv.Verbose {
log.Printf("parts: %v\n", parts)
}
continue
}
}
varname := strings.TrimSuffix(parts[0], ":")
varval := strings.Join(parts[1:], " ")
// log.Printf("varname:%s varval:%s\n", varname, varval)
switch varname {
case "Package":
p.Package = varval
case "Filename":
log.Printf("Filename: varname:%s varval:%s\n", varname, varval)
// p.Package = varval
case "Version":
p.Version = varval
case "Architecture":
p.Architecture = varval
case "GoPath":
p.Namespace = varval
case "Maintainer":
p.DebInfo.Maintainer = varval
case "Packager":
p.DebInfo.Packager = varval
case "Depends":
p.DebInfo.Depends = varval
case "Source":
p.DebInfo.Source = varval
case "URL":
p.DebInfo.URL = varval
case "Build-Depends":
p.DebInfo.BuildDepends = varval
case "Installed-Size:":
case "Installed-Size":
p.DebInfo.InstalledSize = varval
case "Homepage":
p.DebInfo.URL = varval
case "Conflicts":
p.DebInfo.Conflicts = varval
case "Source-Date":
t, err := cobol.GetTime(varval)
if err == nil {
p.GitDate = timestamppb.New(t)
} else {
if argv.Verbose {
log.Info("FIXME: Package-Build-Date", varval, err)
}
}
case "Build-Date":
case "Package-Build-Date":
t, err := cobol.GetTime(varval)
if err == nil {
p.BuildDate = timestamppb.New(t)
} else {
if argv.Verbose {
log.Info("FIXME: Package-Build-Date", varval, err)
}
}
case "Git-Tag-Date":
if argv.Verbose {
log.Info("FIXME: Git-Tag-Date", varval)
}
case "Description":
description := varval
for scanner.Scan() {
line := scanner.Text()
if strings.HasPrefix(line, " ") {
line = strings.TrimSpace(line)
description += line + "\n"
continue
}
break
}
p.DebInfo.Description = description
default:
// This forces me(it could be you!) to fix this parser
varname2 := strings.TrimSuffix(varname, ":")
log.Printf("UNKNOWN: varname:%s varval:%s varname2=%s\n", varname, varval, varname2)
panic("fix mirrors populateDebInfo()")
}
}
// pb.DebInfo should be correctly populated. You can verify these with "mirrors --verify"
return nil
}
|
