CustomAuthenticator.java Source code

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Here is the source code for CustomAuthenticator.java

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/*
 * Copyright 2014-2016 The Apache Software Foundation
 *
 * This class is copied from:
 * https://github.com/apache/incubator-slider/blob/develop/app-packages/accumulo/src/main/java/org/apache/slider/accumulo/CustomAuthenticator.java
 *
 * 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.
 */
import org.apache.accumulo.core.client.AccumuloSecurityException;
import org.apache.accumulo.core.client.security.tokens.AuthenticationToken;
import org.apache.accumulo.core.conf.DefaultConfiguration;
import org.apache.accumulo.core.conf.Property;
import org.apache.accumulo.core.conf.SiteConfiguration;
import org.apache.accumulo.core.security.thrift.TCredentials;
import org.apache.accumulo.server.security.handler.Authenticator;
import org.apache.accumulo.server.security.handler.Authorizor;
import org.apache.accumulo.server.security.handler.PermissionHandler;
import org.apache.accumulo.server.security.handler.ZKAuthenticator;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.security.alias.CredentialProviderFactory;

import java.io.IOException;
import java.nio.charset.Charset;
import java.util.Set;

public final class CustomAuthenticator implements Authenticator {
    public static final String ROOT_INITIAL_PASSWORD_PROPERTY = "root.initial.password";
    private static ZKAuthenticator zkAuthenticator = null;

    public CustomAuthenticator() {
        zkAuthenticator = new ZKAuthenticator();
    }

    @Override
    public void initialize(String instanceId, boolean initialize) {
        zkAuthenticator.initialize(instanceId, initialize);
    }

    @Override
    public void initializeSecurity(TCredentials credentials, String principal, byte[] token)
            throws AccumuloSecurityException {
        String pass = null;
        SiteConfiguration siteconf = SiteConfiguration.getInstance(DefaultConfiguration.getInstance());
        String jksFile = siteconf.get(Property.GENERAL_SECURITY_CREDENTIAL_PROVIDER_PATHS);

        if (jksFile == null) {
            throw new RuntimeException(
                    Property.GENERAL_SECURITY_CREDENTIAL_PROVIDER_PATHS + " not specified in accumulo-site.xml");
        }
        try {
            pass = new String(getPassword(jksFile, ROOT_INITIAL_PASSWORD_PROPERTY));
        } catch (IOException ioe) {
            throw new RuntimeException("Can't get key " + ROOT_INITIAL_PASSWORD_PROPERTY + " from " + jksFile, ioe);
        }
        zkAuthenticator.initializeSecurity(credentials, principal, pass.getBytes(Charset.forName("UTF-8")));
    }

    public static char[] getPassword(String credentialProvider, String alias) throws IOException {
        Configuration conf = new Configuration();
        conf.set(CredentialProviderFactory.CREDENTIAL_PROVIDER_PATH, credentialProvider);
        return conf.getPassword(alias);
    }

    @Override
    public Set<String> listUsers() {
        return zkAuthenticator.listUsers();
    }

    @Override
    public void createUser(String principal, AuthenticationToken token) throws AccumuloSecurityException {
        zkAuthenticator.createUser(principal, token);
    }

    @Override
    public void dropUser(String user) throws AccumuloSecurityException {
        zkAuthenticator.dropUser(user);
    }

    @Override
    public void changePassword(String principal, AuthenticationToken token) throws AccumuloSecurityException {
        zkAuthenticator.changePassword(principal, token);
    }

    @Override
    public boolean userExists(String user) {
        return zkAuthenticator.userExists(user);
    }

    @Override
    public boolean validSecurityHandlers(Authorizor auth, PermissionHandler pm) {
        return true;
    }

    @Override
    public boolean authenticateUser(String principal, AuthenticationToken token) throws AccumuloSecurityException {
        return zkAuthenticator.authenticateUser(principal, token);
    }

    @Override
    public Set<Class<? extends AuthenticationToken>> getSupportedTokenTypes() {
        return zkAuthenticator.getSupportedTokenTypes();
    }

    @Override
    public boolean validTokenClass(String tokenClass) {
        return zkAuthenticator.validTokenClass(tokenClass);
    }
}