mirror of https://github.com/aptly-dev/aptly
100 lines
1.9 KiB
Go
100 lines
1.9 KiB
Go
package debian
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import (
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"archive/tar"
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"bufio"
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"compress/gzip"
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"fmt"
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"github.com/mkrautz/goar"
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"github.com/smira/aptly/utils"
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"io"
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"os"
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"strings"
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)
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// GetControlFileFromDeb reads control file from deb package
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func GetControlFileFromDeb(packageFile string) (Stanza, error) {
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file, err := os.Open(packageFile)
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if err != nil {
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return nil, err
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}
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defer file.Close()
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library := ar.NewReader(file)
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for {
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header, err := library.Next()
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if err == io.EOF {
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return nil, fmt.Errorf("unable to find control.tar.gz part")
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}
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if err != nil {
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return nil, fmt.Errorf("unable to read .deb archive: %s", err)
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}
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if header.Name == "control.tar.gz" {
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ungzip, err := gzip.NewReader(library)
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if err != nil {
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return nil, fmt.Errorf("unable to ungzip: %s", err)
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}
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defer ungzip.Close()
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untar := tar.NewReader(ungzip)
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for {
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tarHeader, err := untar.Next()
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if err == io.EOF {
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return nil, fmt.Errorf("unable to find control file")
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}
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if err != nil {
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return nil, fmt.Errorf("unable to read .tar archive: %s", err)
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}
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if tarHeader.Name == "./control" {
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reader := NewControlFileReader(untar)
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stanza, err := reader.ReadStanza()
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if err != nil {
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return nil, err
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}
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return stanza, nil
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}
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}
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}
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}
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}
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// GetControlFileFromDsc reads control file from dsc package
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func GetControlFileFromDsc(dscFile string, verifier utils.Verifier) (Stanza, error) {
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file, err := os.Open(dscFile)
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if err != nil {
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return nil, err
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}
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defer file.Close()
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line, err := bufio.NewReader(file).ReadString('\n')
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if err != nil {
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return nil, err
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}
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file.Seek(0, 0)
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var text *os.File
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if strings.Index(line, "BEGIN PGP SIGN") != -1 {
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text, err = verifier.ExtractClearsigned(file)
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if err != nil {
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return nil, err
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}
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defer text.Close()
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} else {
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text = file
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}
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reader := NewControlFileReader(text)
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stanza, err := reader.ReadStanza()
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if err != nil {
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return nil, err
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}
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return stanza, nil
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}
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