/**
* 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.hadoop.hdfs;
import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLSession;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenIdentifier;
import org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenRenewer;
import org.apache.hadoop.hdfs.tools.DelegationTokenFetcher;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.security.SecurityUtil;
import org.apache.hadoop.security.token.Token;
import org.apache.hadoop.security.token.delegation.AbstractDelegationTokenSelector;
/** An implementation of a protocol for accessing filesystems over HTTPS.
* The following implementation provides a limited, read-only interface
* to a filesystem over HTTPS.
* @see org.apache.hadoop.hdfs.server.namenode.ListPathsServlet
* @see org.apache.hadoop.hdfs.server.namenode.FileDataServlet
*/
public class HsftpFileSystem extends HftpFileSystem {
public static final Text TOKEN_KIND = new Text("HSFTP delegation");
private static final DelegationTokenRenewer<HsftpFileSystem> dtRenewer
= new DelegationTokenRenewer<HsftpFileSystem>(HsftpFileSystem.class);
private static final HsftpDelegationTokenSelector hftpTokenSelector =
new HsftpDelegationTokenSelector();
@Override
public void initialize(URI name, Configuration conf) throws IOException {
super.initialize(name, conf);
DelegationTokenFetcher.setupSsl(conf);
}
@Override
protected int getDefaultPort() {
return getConf().getInt(DFSConfigKeys.DFS_NAMENODE_HTTPS_PORT_KEY,
DFSConfigKeys.DFS_NAMENODE_HTTPS_PORT_DEFAULT);
}
/**
* Return the underlying protocol that is used to talk to the namenode.
*/
protected String getUnderlyingProtocol() {
return "https";
}
@Override
protected HttpURLConnection openConnection(String path, String query)
throws IOException {
try {
query = updateQuery(query);
final URL url = new URI(getUnderlyingProtocol(), null,
nnAddr.getHostName(),
nnAddr.getPort(), path, query, null).toURL();
HttpsURLConnection conn = (HttpsURLConnection)url.openConnection();
// bypass hostname verification
conn.setHostnameVerifier(new DummyHostnameVerifier());
return (HttpURLConnection)conn;
} catch (URISyntaxException e) {
throw (IOException)new IOException().initCause(e);
}
}
/**
* Dummy hostname verifier that is used to bypass hostname checking
*/
protected static class DummyHostnameVerifier implements HostnameVerifier {
public boolean verify(String hostname, SSLSession session) {
return true;
}
}
protected Token<DelegationTokenIdentifier> selectHftpDelegationToken() {
Text serviceName = SecurityUtil.buildTokenService(nnAddr);
return hftpTokenSelector.selectToken(serviceName, ugi.getTokens());
}
@InterfaceAudience.Private
public static class TokenManager extends HftpFileSystem.TokenManager {
@Override
public boolean handleKind(Text kind) {
return kind.equals(TOKEN_KIND);
}
protected String getUnderlyingProtocol() {
return "https";
}
}
private static class HsftpDelegationTokenSelector
extends AbstractDelegationTokenSelector<DelegationTokenIdentifier> {
public HsftpDelegationTokenSelector() {
super(TOKEN_KIND);
}
}
}