102 lines
2.1 KiB
Go
102 lines
2.1 KiB
Go
// Copyright 2017 Debpkg authors. All rights reserved.
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// Use of this source code is governed by the MIT
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// license that can be found in the LICENSE file.
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package debpkg
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import (
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"fmt"
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"io"
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"os"
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"time"
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"github.com/xor-gate/ar"
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)
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func addArFileFromBuffer(now time.Time, w *ar.Writer, name string, body []byte) error {
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hdr := ar.Header{
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Name: name,
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Size: int64(len(body)),
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Mode: 0644,
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ModTime: now,
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}
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if err := w.WriteHeader(&hdr); err != nil {
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return fmt.Errorf("cannot write file header: %v", err)
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}
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_, err := w.Write(body)
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return err
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}
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func addArFile(now time.Time, w *ar.Writer, dstname, filename string) error {
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f, err := os.Open(filename)
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if err != nil {
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return err
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}
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stat, err := f.Stat()
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if err != nil {
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f.Close()
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return err
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}
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hdr := ar.Header{
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Name: dstname,
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Size: stat.Size(),
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Mode: 0644,
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ModTime: now,
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}
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if err := w.WriteHeader(&hdr); err != nil {
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f.Close()
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return fmt.Errorf("cannot write file header: %v", err)
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}
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_, err = io.Copy(w, f)
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f.Close()
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return err
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}
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func (deb *DebPkg) createDebAr(filename string) error {
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removeDeb := true
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fd, err := os.Create(filename)
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if err != nil {
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return fmt.Errorf("unable to create: %s", filename)
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}
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defer func() {
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fd.Close()
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if removeDeb {
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os.Remove(filename)
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}
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}()
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now := time.Now()
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w := ar.NewWriter(fd)
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if err := w.WriteGlobalHeader(); err != nil {
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return fmt.Errorf("cannot write ar header to deb file: %v", err)
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}
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if err := addArFileFromBuffer(now, w, "debian-binary", []byte(deb.debianBinary)); err != nil {
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return fmt.Errorf("cannot pack debian-binary: %v", err)
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}
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if err := addArFile(now, w, "control.tar.gz", deb.control.tgz.Name()); err != nil {
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return fmt.Errorf("cannot add control.tar.gz to deb: %v", err)
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}
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if err := addArFile(now, w, "data.tar.gz", deb.data.tgz.Name()); err != nil {
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return fmt.Errorf("cannot add data.tar.gz to deb: %v", err)
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}
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if deb.digest.clearsign != "" {
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if err := addArFileFromBuffer(now, w, "digests.asc", []byte(deb.digest.clearsign)); err != nil {
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return fmt.Errorf("cannot add digests.asc to deb: %v", err)
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}
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}
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removeDeb = false
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return nil
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}
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