/
parse_rpm_archive.go
93 lines (82 loc) · 2.44 KB
/
parse_rpm_archive.go
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package redhat
import (
"context"
"fmt"
"strconv"
rpmdb "github.com/knqyf263/go-rpmdb/pkg"
"github.com/sassoftware/go-rpmutils"
"github.com/anchore/syft/syft/artifact"
"github.com/anchore/syft/syft/file"
"github.com/anchore/syft/syft/pkg"
"github.com/anchore/syft/syft/pkg/cataloger/generic"
)
// parseRpmArchive parses a single RPM
func parseRpmArchive(_ context.Context, _ file.Resolver, _ *generic.Environment, reader file.LocationReadCloser) ([]pkg.Package, []artifact.Relationship, error) {
rpm, err := rpmutils.ReadRpm(reader)
if err != nil {
return nil, nil, fmt.Errorf("RPM file found but unable to read: %s (%w)", reader.Location.RealPath, err)
}
nevra, err := rpm.Header.GetNEVRA()
if err != nil {
return nil, nil, err
}
licenses, _ := rpm.Header.GetStrings(rpmutils.LICENSE)
sourceRpm, _ := rpm.Header.GetString(rpmutils.SOURCERPM)
vendor, _ := rpm.Header.GetString(rpmutils.VENDOR)
digestAlgorithm := getDigestAlgorithm(rpm.Header)
size, _ := rpm.Header.InstalledSize()
files, _ := rpm.Header.GetFiles()
metadata := pkg.RpmArchive{
Name: nevra.Name,
Version: nevra.Version,
Epoch: parseEpoch(nevra.Epoch),
Arch: nevra.Arch,
Release: nevra.Release,
SourceRpm: sourceRpm,
Vendor: vendor,
Size: int(size),
Files: mapFiles(files, digestAlgorithm),
}
return []pkg.Package{newArchivePackage(reader.Location, metadata, licenses)}, nil, nil
}
func getDigestAlgorithm(header *rpmutils.RpmHeader) string {
digestAlgorithm, _ := header.GetString(rpmutils.FILEDIGESTALGO)
if digestAlgorithm != "" {
return digestAlgorithm
}
digestAlgorithms, _ := header.GetUint32s(rpmutils.FILEDIGESTALGO)
if len(digestAlgorithms) > 0 {
digestAlgo := int(digestAlgorithms[0])
return rpmutils.GetFileAlgoName(digestAlgo)
}
return ""
}
func mapFiles(files []rpmutils.FileInfo, digestAlgorithm string) []pkg.RpmFileRecord {
var out []pkg.RpmFileRecord
for _, f := range files {
digest := file.Digest{}
if f.Digest() != "" {
digest = file.Digest{
Algorithm: digestAlgorithm,
Value: f.Digest(),
}
}
out = append(out, pkg.RpmFileRecord{
Path: f.Name(),
Mode: pkg.RpmFileMode(f.Mode()),
Size: int(f.Size()),
Digest: digest,
UserName: f.UserName(),
GroupName: f.GroupName(),
Flags: rpmdb.FileFlags(f.Flags()).String(),
})
}
return out
}
func parseEpoch(epoch string) *int {
i, err := strconv.Atoi(epoch)
if err != nil {
return nil
}
return &i
}