Validate access with OPTIONS before doing a PUT

client/client.go

@@ -21,6 +21,26 @@ const (
 	gitMediaHeader   = "0014 git media v1\n"
 )
 
+func Options(filehash string) error {
+	oid := filepath.Base(filehash)
+	_, err := os.Stat(filehash)
+	if err != nil {
+		return err
+	}
+
+	req, creds, err := clientRequest("OPTIONS", oid)
+	if err != nil {
+		return err
+	}
+
+	_, err = doRequest(req, creds)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
 func Put(filehash, filename string) error {
 	if filename == "" {
 		filename = filehash

commands/command_sync.go

@@ -23,7 +23,13 @@ func (c *SyncCommand) Run() {
 		}
 
 		path := gitmedia.LocalMediaPath(sha)
-		err := gitmediaclient.Put(path, filename)
+
+		err := gitmediaclient.Options(path)
+		if err != nil {
+			gitmedia.Panic(err, "error uploading file %s", filename)
+		}
+
+		err = gitmediaclient.Put(path, filename)
 		if err != nil {
 			gitmedia.Panic(err, "error uploading file %s", sha)
 		}