// Licensed to the Apache Software Foundation (ASF) under one // or more contributor license agreements. See the NOTICE file // distributed with this work for additional information // regarding copyright ownership. The ASF licenses this file // to you under the Apache License, Version 2.0 (the // "License"); you may not use this file except in compliance // with the License. You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, // software distributed under the License is distributed on an // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY // KIND, either express or implied. See the License for the // specific language governing permissions and limitations // under the License. package org.apache.cloudstack.acl; import com.cloud.exception.InvalidParameterValueException; import com.google.common.base.Strings; import java.util.regex.Pattern; public final class Rule { private final String rule; private final static Pattern ALLOWED_PATTERN = Pattern.compile("^[a-zA-Z0-9*]+$"); public Rule(final String rule) { validate(rule); this.rule = rule; } public boolean matches(final String commandName) { return !Strings.isNullOrEmpty(commandName) && commandName.toLowerCase().matches(rule.toLowerCase().replace("*", "\\w*")); } public String getRuleString() { return rule; } @Override public String toString() { return rule; } private static boolean validate(final String rule) { if (Strings.isNullOrEmpty(rule) || !ALLOWED_PATTERN.matcher(rule).matches()) { throw new InvalidParameterValueException("Only API names and wildcards are allowed, invalid rule provided: " + rule); } return true; } }