validate model path

server/modelpath.go

@@ -73,18 +73,6 @@ func ParseModelPath(name string) ModelPath {
 
 var errModelPathInvalid = errors.New("invalid model path")
 
-func (mp ModelPath) Validate() error {
-	if mp.Repository == "" {
-		return fmt.Errorf("%w: model repository name is required", errModelPathInvalid)
-	}
-
-	if strings.Contains(mp.Tag, ":") {
-		return fmt.Errorf("%w: ':' (colon) is not allowed in tag names", errModelPathInvalid)
-	}
-
-	return nil
-}
-
 func (mp ModelPath) GetNamespaceRepository() string {
 	return fmt.Sprintf("%s/%s", mp.Namespace, mp.Repository)
 }
@@ -105,7 +93,11 @@ func (mp ModelPath) GetShortTagname() string {
 
 // GetManifestPath returns the path to the manifest file for the given model path, it is up to the caller to create the directory if it does not exist.
 func (mp ModelPath) GetManifestPath() (string, error) {
-	return filepath.Join(envconfig.Models(), "manifests", mp.Registry, mp.Namespace, mp.Repository, mp.Tag), nil
+	if p := filepath.Join(mp.Registry, mp.Namespace, mp.Repository, mp.Tag); filepath.IsLocal(p) {
+		return filepath.Join(envconfig.Models(), "manifests", p), nil
+	}
+
+	return "", errModelPathInvalid
 }
 
 func (mp ModelPath) BaseURL() *url.URL {

server/modelpath_test.go

@@ -1,6 +1,7 @@
 package server
 
 import (
+	"errors"
 	"os"
 	"path/filepath"
 	"testing"
@@ -154,3 +155,10 @@ func TestParseModelPath(t *testing.T) {
 		})
 	}
 }
+
+func TestInsecureModelpath(t *testing.T) {
+	mp := ParseModelPath("../../..:something")
+	if _, err := mp.GetManifestPath(); !errors.Is(err, errModelPathInvalid) {
+		t.Errorf("expected error: %v", err)
+	}
+}