org.apache.sshd.common.kex.extension.parser.ServerSignatureAlgorithms Maven / Gradle / Ivy
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* 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
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* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
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*/
package org.apache.sshd.common.kex.extension.parser;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import org.apache.sshd.common.util.GenericUtils;
import org.apache.sshd.common.util.buffer.Buffer;
/**
* @author Apache MINA SSHD Project
* @see RFC-8308 - section 3.1
*/
public class ServerSignatureAlgorithms extends AbstractKexExtensionParser> {
public static final String NAME = "server-sig-algs";
public static final ServerSignatureAlgorithms INSTANCE = new ServerSignatureAlgorithms();
public ServerSignatureAlgorithms() {
super(NAME);
}
@Override
public List parseExtension(byte[] data, int off, int len) throws IOException {
String s = (len <= 0) ? "" : new String(data, off, len, StandardCharsets.UTF_8);
String[] vals = GenericUtils.isEmpty(s) ? GenericUtils.EMPTY_STRING_ARRAY : GenericUtils.split(s, ',');
return GenericUtils.isEmpty(vals) ? Collections.emptyList() : Arrays.asList(vals);
}
@Override
public List parseExtension(Buffer buffer) throws IOException {
return parseExtension(buffer.array(), buffer.rpos(), buffer.available());
}
@Override
protected void encode(List names, Buffer buffer) throws IOException {
buffer.putNameList(names);
}
}