127 lines
2.9 KiB
Go
127 lines
2.9 KiB
Go
// Copyright (c) 2020 Proton Technologies AG
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//
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// This file is part of ProtonMail Bridge.
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//
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// ProtonMail Bridge is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// ProtonMail Bridge is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with ProtonMail Bridge. If not, see <https://www.gnu.org/licenses/>.
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package updates
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import (
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"archive/tar"
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"compress/gzip"
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"errors"
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"io"
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"os"
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"os/exec"
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"path/filepath"
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"runtime"
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"github.com/sirupsen/logrus"
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)
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func createTar(tarPath, sourcePath string) error { //nolint[unused]
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if runtime.GOOS != "linux" {
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return errors.New("tar not implemented only for linux")
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}
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// Check whether it exists and is a directory.
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if _, err := os.Lstat(sourcePath); err != nil {
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return err
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}
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absPath, err := filepath.Abs(tarPath)
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if err != nil {
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return err
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}
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cmd := exec.Command("tar", "-zvcf", absPath, filepath.Base(sourcePath)) //nolint[gosec]
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cmd.Dir = filepath.Dir(sourcePath)
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cmd.Stderr = log.WriterLevel(logrus.ErrorLevel)
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cmd.Stdout = log.WriterLevel(logrus.InfoLevel)
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return cmd.Run()
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}
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func untarToDir(tarPath, targetDir string, status *Progress) error { //nolint[funlen]
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// Check whether it exists and is a directory.
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if ls, err := os.Lstat(targetDir); err == nil {
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if !ls.IsDir() {
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return errors.New("not a dir")
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}
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} else {
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return err
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}
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tgzReader, err := os.Open(tarPath) //nolint[gosec]
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if err != nil {
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return err
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}
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defer tgzReader.Close() //nolint[errcheck]
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size := uint64(0)
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if info, err := tgzReader.Stat(); err == nil {
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size = uint64(info.Size())
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}
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wc := &WriteCounter{
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Status: status,
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Size: size,
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}
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tarReader, err := gzip.NewReader(io.TeeReader(tgzReader, wc))
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if err != nil {
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return err
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}
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fileReader := tar.NewReader(tarReader)
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for {
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header, err := fileReader.Next()
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if err == io.EOF {
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break
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}
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if err != nil {
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return err
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}
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if header == nil {
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continue
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}
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targetFile := filepath.Join(targetDir, header.Name)
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info := header.FileInfo()
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// Create symlink.
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if header.Typeflag == tar.TypeSymlink {
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if header.Linkname == "" {
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return errors.New("missing linkname")
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}
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if err := os.Symlink(header.Linkname, targetFile); err != nil {
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return err
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}
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continue
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}
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// Handle case that it is a directory.
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if info.IsDir() {
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if err := os.MkdirAll(targetFile, info.Mode()); err != nil {
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return err
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}
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continue
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}
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// Handle case that it is a regular file.
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if err := copyToFileTruncate(fileReader, targetFile, info.Mode()); err != nil {
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return err
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}
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}
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return nil
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}
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