org.apache.sshd.common.config.keys.loader.pem.PEMResourceParserUtils 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
* under the License.
*/
package org.apache.sshd.common.config.keys.loader.pem;
import java.io.IOException;
import java.security.GeneralSecurityException;
import java.security.KeyPair;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.TreeMap;
import java.util.concurrent.atomic.AtomicReference;
import org.apache.sshd.common.NamedResource;
import org.apache.sshd.common.config.keys.FilePasswordProvider;
import org.apache.sshd.common.config.keys.loader.KeyPairResourceParser;
import org.apache.sshd.common.session.SessionContext;
import org.apache.sshd.common.util.GenericUtils;
import org.apache.sshd.common.util.ValidateUtils;
/**
* @author Apache MINA SSHD Project
*/
public final class PEMResourceParserUtils {
public static final KeyPairResourceParser PROXY = new KeyPairResourceParser() {
@Override
public Collection loadKeyPairs(
SessionContext session, NamedResource resourceKey, FilePasswordProvider passwordProvider, List lines)
throws IOException, GeneralSecurityException {
@SuppressWarnings("synthetic-access")
KeyPairResourceParser proxy = PROXY_HOLDER.get();
return (proxy == null)
? Collections.emptyList() : proxy.loadKeyPairs(session, resourceKey, passwordProvider, lines);
}
@Override
public boolean canExtractKeyPairs(NamedResource resourceKey, List lines)
throws IOException, GeneralSecurityException {
@SuppressWarnings("synthetic-access")
KeyPairResourceParser proxy = PROXY_HOLDER.get();
return (proxy != null) && proxy.canExtractKeyPairs(resourceKey, lines);
}
};
private static final Map BY_OID_MAP = new TreeMap<>(String.CASE_INSENSITIVE_ORDER);
private static final Map BY_ALGORITHM_MAP = new TreeMap<>(String.CASE_INSENSITIVE_ORDER);
private static final AtomicReference PROXY_HOLDER
= new AtomicReference<>(KeyPairResourceParser.EMPTY);
static {
registerPEMResourceParser(RSAPEMResourceKeyPairParser.INSTANCE);
registerPEMResourceParser(DSSPEMResourceKeyPairParser.INSTANCE);
registerPEMResourceParser(ECDSAPEMResourceKeyPairParser.INSTANCE);
registerPEMResourceParser(PKCS8PEMResourceKeyPairParser.INSTANCE);
}
private PEMResourceParserUtils() {
throw new UnsupportedOperationException("No instance");
}
public static void registerPEMResourceParser(KeyPairPEMResourceParser parser) {
Objects.requireNonNull(parser, "No parser to register");
synchronized (BY_OID_MAP) {
BY_OID_MAP.put(ValidateUtils.checkNotNullAndNotEmpty(parser.getAlgorithmIdentifier(), "No OID value"), parser);
}
synchronized (BY_ALGORITHM_MAP) {
BY_ALGORITHM_MAP.put(ValidateUtils.checkNotNullAndNotEmpty(parser.getAlgorithm(), "No algorithm value"), parser);
// Use a copy in order to avoid concurrent modifications
PROXY_HOLDER.set(KeyPairResourceParser.aggregate(new ArrayList<>(BY_ALGORITHM_MAP.values())));
}
}
public static KeyPairPEMResourceParser getPEMResourceParserByOidValues(Collection oid) {
return getPEMResourceParserByOid(GenericUtils.join(oid, '.'));
}
public static KeyPairPEMResourceParser getPEMResourceParserByOid(String oid) {
if (GenericUtils.isEmpty(oid)) {
return null;
}
synchronized (BY_OID_MAP) {
return BY_OID_MAP.get(oid);
}
}
public static KeyPairPEMResourceParser getPEMResourceParserByAlgorithm(String algorithm) {
if (GenericUtils.isEmpty(algorithm)) {
return null;
}
synchronized (BY_ALGORITHM_MAP) {
return BY_ALGORITHM_MAP.get(algorithm);
}
}
}