fix: handle empty OS family (#2768)

.github/workflows/release.yaml

@@ -10,7 +10,7 @@ jobs:
     uses: ./.github/workflows/reusable-release.yaml
     with:
       goreleaser_config: goreleaser.yml
-      goreleaser_options: '--rm-dist --timeout 60m'
+      goreleaser_options: '--rm-dist --timeout 90m'
     secrets: inherit
 
   deploy-packages:
@@ -54,4 +54,4 @@ jobs:
         run: echo -e "${{ secrets.GPG_KEY }}" | gpg --import
 
       - name: Create deb repository
-        run: ci/deploy-deb.sh
+        run: ci/deploy-deb.sh

.github/workflows/test.yaml

@@ -113,7 +113,7 @@ jobs:
       uses: goreleaser/goreleaser-action@v3
       with:
         version: v1.4.1
-        args: release --snapshot --rm-dist --skip-publish --timeout 60m
+        args: release --snapshot --rm-dist --skip-publish --timeout 90m
 
   build-documents:
     name: Documentation Test

pkg/scanner/local/scan.go

@@ -80,6 +80,11 @@ func (s Scanner) Scan(ctx context.Context, target, artifactKey string, blobKeys
 	case errors.Is(err, analyzer.ErrUnknownOS):
 		log.Logger.Debug("OS is not detected.")
 
+		// Packages may contain OS-independent binary information even though OS is not detected.
+		if len(artifactDetail.Packages) != 0 {
+			artifactDetail.OS = &ftypes.OS{Family: "none"}
+		}
+
 		// If OS is not detected and repositories are detected, we'll try to use repositories as OS.
 		if artifactDetail.Repository != nil {
 			log.Logger.Debugf("Package repository: %s %s", artifactDetail.Repository.Family, artifactDetail.Repository.Release)
@@ -167,12 +172,10 @@ func (s Scanner) Scan(ctx context.Context, target, artifactKey string, blobKeys
 }
 
 func (s Scanner) osPkgsToResult(target string, detail ftypes.ArtifactDetail, options types.ScanOptions) *types.Result {
-	if len(detail.Packages) == 0 {
+	if len(detail.Packages) == 0 || detail.OS == nil {
 		return nil
 	}
-	if detail.OS != nil {
-		target = fmt.Sprintf("%s (%s %s)", target, detail.OS.Family, detail.OS.Name)
-	}
+
 	pkgs := detail.Packages
 	if options.ScanRemovedPackages {
 		pkgs = mergePkgs(pkgs, detail.HistoryPackages)
@@ -181,7 +184,7 @@ func (s Scanner) osPkgsToResult(target string, detail ftypes.ArtifactDetail, opt
 		return strings.Compare(pkgs[i].Name, pkgs[j].Name) <= 0
 	})
 	return &types.Result{
-		Target:   target,
+		Target:   fmt.Sprintf("%s (%s %s)", target, detail.OS.Family, detail.OS.Name),
 		Class:    types.ClassOSPkg,
 		Type:     detail.OS.Family,
 		Packages: pkgs,