	this.parents = function(hash) {
		var parents = [],
			dir;
		
		while ((dir = this.file(hash))) {
			parents.unshift(dir.hash);
			hash = dir.phash;
		}
		return parents;
	}
The software constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component.