cmd: add git-lfs-transfer support

Author: ConcurrentCrab

cmd/serv.go

@@ -40,6 +40,7 @@ const (
 	verbUploadArchive   = "git-upload-archive"
 	verbReceivePack     = "git-receive-pack"
 	verbLfsAuthenticate = "git-lfs-authenticate"
+	verbLfsTransfer     = "git-lfs-transfer"
 )
 
 // CmdServ represents the available serv sub-command.
@@ -83,9 +84,11 @@ var (
 		verbUploadArchive:   true,
 		verbReceivePack:     true,
 		verbLfsAuthenticate: true,
+		verbLfsTransfer:     true,
 	}
 	allowedCommandsLfs = map[string]bool{
 		verbLfsAuthenticate: true,
+		verbLfsTransfer:     true,
 	}
 	alphaDashDotPattern = regexp.MustCompile(`[^\w-\.]`)
 )
@@ -138,7 +141,7 @@ func getAccessMode(verb string, lfsVerb string) perm.AccessMode {
 		return perm.AccessModeRead
 	case verbReceivePack:
 		return perm.AccessModeWrite
-	case verbLfsAuthenticate:
+	case verbLfsAuthenticate, verbLfsTransfer:
 		switch lfsVerb {
 		case "upload":
 			return perm.AccessModeWrite