AudValidator.java

/*
 * Copyright 2012-2017 Brian Campbell
 *
 * Licensed 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.jose4j.jwt.consumer;

import java.util.List;
import java.util.Set;

abstract class AudValidator implements ErrorCodeValidator
{
    static final Error MISSING_AUD = new Error(ErrorCodes.AUDIENCE_MISSING, "No Audience (aud) claim present.");

    Error getAudValidatorError(List<String> audiences, Set<String> acceptableAudiences)
    {
        StringBuilder sb = new StringBuilder();
        sb.append("Audience (aud) claim " ).append(audiences);
        if (acceptableAudiences.isEmpty())
        {
            sb.append(" present in the JWT but no expected audience value(s) were provided to the JWT Consumer.");
        }
        else
        {
            sb.append(" doesn't contain an acceptable identifier.");
        }
        sb.append(" Expected ");
        if (acceptableAudiences.size() == 1)
        {
            sb.append(acceptableAudiences.iterator().next());
        }
        else
        {
            sb.append("one of ").append(acceptableAudiences);
        }
        sb.append(" as an aud value.");
        return new Error(ErrorCodes.AUDIENCE_INVALID, sb.toString());
    }

}