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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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/*
 * 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.sshd.common.config.keys;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.net.URL;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.nio.file.OpenOption;
import java.nio.file.Path;
import java.security.GeneralSecurityException;
import java.security.PublicKey;
import java.util.List;
import java.util.Objects;

import org.apache.sshd.common.NamedResource;
import org.apache.sshd.common.session.SessionContext;
import org.apache.sshd.common.util.io.IoUtils;
import org.apache.sshd.common.util.io.resource.IoResource;
import org.apache.sshd.common.util.io.resource.PathResource;
import org.apache.sshd.common.util.io.resource.URLResource;

/**
 * @param   The generic {@link PublicKey} type
 * @author       Apache MINA SSHD Project
 */
public interface PublicKeyRawDataReader {
    default PUB readPublicKey(SessionContext session, Path path, OpenOption... options)
            throws IOException, GeneralSecurityException {
        return readPublicKey(session, path, StandardCharsets.UTF_8, options);
    }

    default PUB readPublicKey(
            SessionContext session, Path path, Charset cs, OpenOption... options)
            throws IOException, GeneralSecurityException {
        return readPublicKey(session, new PathResource(path, options), cs);
    }

    default PUB readPublicKey(SessionContext session, URL url)
            throws IOException, GeneralSecurityException {
        return readPublicKey(session, url, StandardCharsets.UTF_8);
    }

    default PUB readPublicKey(SessionContext session, URL url, Charset cs)
            throws IOException, GeneralSecurityException {
        return readPublicKey(session, new URLResource(url), cs);
    }

    default PUB readPublicKey(SessionContext session, IoResource resource)
            throws IOException, GeneralSecurityException {
        return readPublicKey(session, resource, StandardCharsets.UTF_8);
    }

    default PUB readPublicKey(
            SessionContext session, IoResource resource, Charset cs)
            throws IOException, GeneralSecurityException {
        try (InputStream stream = Objects.requireNonNull(resource, "No resource data").openInputStream()) {
            return readPublicKey(session, resource, stream, cs);
        }
    }

    default PUB readPublicKey(
            SessionContext session, NamedResource resourceKey, InputStream stream)
            throws IOException, GeneralSecurityException {
        return readPublicKey(session, resourceKey, stream, StandardCharsets.UTF_8);
    }

    default PUB readPublicKey(
            SessionContext session, NamedResource resourceKey, InputStream stream, Charset cs)
            throws IOException, GeneralSecurityException {
        try (Reader reader = new InputStreamReader(
                Objects.requireNonNull(stream, "No stream instance"), Objects.requireNonNull(cs, "No charset"))) {
            return readPublicKey(session, resourceKey, reader);
        }
    }

    default PUB readPublicKey(
            SessionContext session, NamedResource resourceKey, Reader rdr)
            throws IOException, GeneralSecurityException {
        try (BufferedReader br
                = new BufferedReader(Objects.requireNonNull(rdr, "No reader instance"), IoUtils.DEFAULT_COPY_SIZE)) {
            return readPublicKey(session, resourceKey, br);
        }
    }

    default PUB readPublicKey(
            SessionContext session, NamedResource resourceKey, BufferedReader rdr)
            throws IOException, GeneralSecurityException {
        List lines = IoUtils.readAllLines(rdr);
        try {
            return readPublicKey(session, resourceKey, lines);
        } finally {
            lines.clear(); // clean up sensitive data a.s.a.p.
        }
    }

    PUB readPublicKey(SessionContext session, NamedResource resourceKey, List lines)
            throws IOException, GeneralSecurityException;
}