io.netty.handler.ssl.util.FingerprintTrustManagerFactoryBuilder Maven / Gradle / Ivy

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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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/*
 * Copyright 2020 The Netty Project
 *
 * The Netty Project 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:
 *
 *   https://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 io.netty.handler.ssl.util;

import static io.netty.util.internal.ObjectUtil.checkNotNull;
import static io.netty.util.internal.ObjectUtil.checkNotNullWithIAE;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

/**
 * A builder for creating {@link FingerprintTrustManagerFactory}.
 */
public final class FingerprintTrustManagerFactoryBuilder {

    /**
     * A hash algorithm for fingerprints.
     */
    private final String algorithm;

    /**
     * A list of fingerprints.
     */
    private final List fingerprints = new ArrayList();

    /**
     * Creates a builder.
     *
     * @param algorithm a hash algorithm
     */
    FingerprintTrustManagerFactoryBuilder(String algorithm) {
        this.algorithm = checkNotNull(algorithm, "algorithm");
    }

    /**
     * Adds fingerprints.
     *
     * @param fingerprints a number of fingerprints
     * @return the same builder
     */
    public FingerprintTrustManagerFactoryBuilder fingerprints(CharSequence... fingerprints) {
        return fingerprints(Arrays.asList(checkNotNull(fingerprints, "fingerprints")));
    }

    /**
     * Adds fingerprints.
     *
     * @param fingerprints a number of fingerprints
     * @return the same builder
     */
    public FingerprintTrustManagerFactoryBuilder fingerprints(Iterable fingerprints) {
        checkNotNull(fingerprints, "fingerprints");
        for (CharSequence fingerprint : fingerprints) {
            checkNotNullWithIAE(fingerprint, "fingerprint");
            this.fingerprints.add(fingerprint.toString());
        }
        return this;
    }

    /**
     * Creates a {@link FingerprintTrustManagerFactory}.
     *
     * @return a new {@link FingerprintTrustManagerFactory}
     */
    public FingerprintTrustManagerFactory build() {
        if (fingerprints.isEmpty()) {
            throw new IllegalStateException("No fingerprints provided");
        }
        return new FingerprintTrustManagerFactory(this.algorithm,
                                                  FingerprintTrustManagerFactory.toFingerprintArray(this.fingerprints));
    }
}