Fix possible nil pointer access (#28428) (#28440)

Backport #28428 by @KN4CK3R

There could be a nil pointer exception if the file is not found because
that specific error is suppressed but not handled.

Co-authored-by: KN4CK3R <admin@oldschoolhack.me>

services/packages/alpine/repository.go

@@ -82,10 +82,7 @@ func BuildAllRepositoryFiles(ctx context.Context, ownerID int64) error {
 	}
 
 	for _, pf := range pfs {
-		if err := packages_model.DeleteAllProperties(ctx, packages_model.PropertyTypeFile, pf.ID); err != nil {
-			return err
-		}
-		if err := packages_model.DeleteFileByID(ctx, pf.ID); err != nil {
+		if err := packages_service.DeletePackageFile(ctx, pf); err != nil {
 			return err
 		}
 	}
@@ -157,12 +154,11 @@ func buildPackagesIndex(ctx context.Context, ownerID int64, repoVersion *package
 		pf, err := packages_model.GetFileForVersionByName(ctx, repoVersion.ID, IndexFilename, fmt.Sprintf("%s|%s|%s", branch, repository, architecture))
 		if err != nil && !errors.Is(err, util.ErrNotExist) {
 			return err
+		} else if pf == nil {
+			return nil
 		}
 
-		if err := packages_model.DeleteAllProperties(ctx, packages_model.PropertyTypeFile, pf.ID); err != nil {
-			return err
-		}
-		return packages_model.DeleteFileByID(ctx, pf.ID)
+		return packages_service.DeletePackageFile(ctx, pf)
 	}
 
 	// Cache data needed for all repository files

services/packages/container/cleanup.go

@@ -11,6 +11,7 @@ import (
 	container_model "code.gitea.io/gitea/models/packages/container"
 	container_module "code.gitea.io/gitea/modules/packages/container"
 	"code.gitea.io/gitea/modules/util"
+	packages_service "code.gitea.io/gitea/services/packages"
 
 	digest "github.com/opencontainers/go-digest"
 )
@@ -47,10 +48,7 @@ func cleanupExpiredUploadedBlobs(ctx context.Context, olderThan time.Duration) e
 	}
 
 	for _, pf := range pfs {
-		if err := packages_model.DeleteAllProperties(ctx, packages_model.PropertyTypeFile, pf.ID); err != nil {
-			return err
-		}
-		if err := packages_model.DeleteFileByID(ctx, pf.ID); err != nil {
+		if err := packages_service.DeletePackageFile(ctx, pf); err != nil {
 			return err
 		}
 	}

services/packages/debian/repository.go

@@ -110,10 +110,7 @@ func BuildAllRepositoryFiles(ctx context.Context, ownerID int64) error {
 	}
 
 	for _, pf := range pfs {
-		if err := packages_model.DeleteAllProperties(ctx, packages_model.PropertyTypeFile, pf.ID); err != nil {
-			return err
-		}
-		if err := packages_model.DeleteFileByID(ctx, pf.ID); err != nil {
+		if err := packages_service.DeletePackageFile(ctx, pf); err != nil {
 			return err
 		}
 	}
@@ -182,12 +179,11 @@ func buildPackagesIndices(ctx context.Context, ownerID int64, repoVersion *packa
 			pf, err := packages_model.GetFileForVersionByName(ctx, repoVersion.ID, filename, key)
 			if err != nil && !errors.Is(err, util.ErrNotExist) {
 				return err
+			} else if pf == nil {
+				continue
 			}
 
-			if err := packages_model.DeleteAllProperties(ctx, packages_model.PropertyTypeFile, pf.ID); err != nil {
-				return err
-			}
-			if err := packages_model.DeleteFileByID(ctx, pf.ID); err != nil {
+			if err := packages_service.DeletePackageFile(ctx, pf); err != nil {
 				return err
 			}
 		}
@@ -285,12 +281,11 @@ func buildReleaseFiles(ctx context.Context, ownerID int64, repoVersion *packages
 			pf, err := packages_model.GetFileForVersionByName(ctx, repoVersion.ID, filename, distribution)
 			if err != nil && !errors.Is(err, util.ErrNotExist) {
 				return err
+			} else if pf == nil {
+				continue
 			}
 
-			if err := packages_model.DeleteAllProperties(ctx, packages_model.PropertyTypeFile, pf.ID); err != nil {
-				return err
-			}
-			if err := packages_model.DeleteFileByID(ctx, pf.ID); err != nil {
+			if err := packages_service.DeletePackageFile(ctx, pf); err != nil {
 				return err
 			}
 		}

services/packages/rpm/repository.go

@@ -148,10 +148,7 @@ func BuildRepositoryFiles(ctx context.Context, ownerID int64) error {
 			return err
 		}
 		for _, pf := range pfs {
-			if err := packages_model.DeleteAllProperties(ctx, packages_model.PropertyTypeFile, pf.ID); err != nil {
-				return err
-			}
-			if err := packages_model.DeleteFileByID(ctx, pf.ID); err != nil {
+			if err := packages_service.DeletePackageFile(ctx, pf); err != nil {
 				return err
 			}
 		}