org.wildfly.security.auth.util.ElytronFilePasswordProvider 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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/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2019 Red Hat, Inc., and individual contributors
 * as indicated by the @author tags.
 *
 * 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.wildfly.security.auth.util;

import static org.wildfly.security.auth.util.ElytronMessages.log;

import java.io.IOException;

import javax.xml.stream.XMLStreamException;

import org.apache.sshd.common.NamedResource;
import org.apache.sshd.common.config.keys.FilePasswordProvider;
import org.apache.sshd.common.session.SessionContext;
import org.wildfly.common.function.ExceptionSupplier;
import org.wildfly.security.credential.Credential;
import org.wildfly.security.credential.PasswordCredential;
import org.wildfly.security.credential.source.CredentialSource;
import org.wildfly.security.password.interfaces.ClearPassword;

/**
 * An implementation of {@link FilePasswordProvider} which can provide the password to decrypt a private key using a
 * {@link CredentialSource} or {@link Credential}
 *
 * @author Ashley Abdel-Sayed
 */

public class ElytronFilePasswordProvider implements FilePasswordProvider {

    private final ExceptionSupplier credentialSourceSupplier;
    private final Credential credential;

    public ElytronFilePasswordProvider(ExceptionSupplier credentialSourceSupplier) {
        this.credentialSourceSupplier = credentialSourceSupplier;
        this.credential = null;
    }

    public ElytronFilePasswordProvider(Credential credential) {
        this.credentialSourceSupplier = null;
        this.credential = credential;
    }

    @Override
    public String getPassword(SessionContext session, NamedResource resourceKey, int retryIndex) throws IOException {
        char[] password = null;
        if (credentialSourceSupplier != null) {
            CredentialSource credentialSource = null;
            try {
                credentialSource = credentialSourceSupplier.get();
            } catch (XMLStreamException e) {
                throw log.xmlFailedToCreateCredential(e);
            }

            password = credentialSource.applyToCredential(PasswordCredential.class, c -> c.getPassword().castAndApply(ClearPassword.class, ClearPassword::getPassword));
        } else if (credential != null) {
            password = credential.castAndApply(PasswordCredential.class, c -> c.getPassword().castAndApply(ClearPassword.class, ClearPassword::getPassword));
        }

        if (password == null) {
            throw log.xmlFailedToCreateCredential(new NullPointerException());
        }
        return new String(password);
    }
}