| /** |
| * 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.oncrpc.security; |
| |
| import java.net.InetAddress; |
| import java.net.UnknownHostException; |
| import java.nio.charset.StandardCharsets; |
| |
| import com.google.common.annotations.VisibleForTesting; |
| import org.apache.hadoop.oncrpc.XDR; |
| |
| /** Credential used by AUTH_SYS */ |
| public class CredentialsSys extends Credentials { |
| |
| private static final String HOSTNAME; |
| static { |
| try { |
| String s = InetAddress.getLocalHost().getHostName(); |
| HOSTNAME = s; |
| if(LOG.isDebugEnabled()) { |
| LOG.debug("HOSTNAME = " + HOSTNAME); |
| } |
| } catch (UnknownHostException e) { |
| LOG.error("Error setting HOSTNAME", e); |
| throw new RuntimeException(e); |
| } |
| } |
| |
| protected int mUID, mGID; |
| protected int[] mAuxGIDs; |
| protected String mHostName; |
| protected int mStamp; |
| |
| public CredentialsSys() { |
| super(AuthFlavor.AUTH_SYS); |
| this.mCredentialsLength = 0; |
| this.mHostName = HOSTNAME; |
| } |
| |
| public int getGID() { |
| return mGID; |
| } |
| |
| public int getUID() { |
| return mUID; |
| } |
| |
| public int[] getAuxGIDs() { |
| return mAuxGIDs; |
| } |
| |
| @VisibleForTesting |
| int getStamp() { |
| return mStamp; |
| } |
| |
| public void setGID(int gid) { |
| this.mGID = gid; |
| } |
| |
| public void setUID(int uid) { |
| this.mUID = uid; |
| } |
| |
| public void setStamp(int stamp) { |
| this.mStamp = stamp; |
| } |
| |
| @VisibleForTesting |
| void setHostName(String hostname) { |
| this.mHostName = hostname; |
| } |
| |
| @Override |
| public void read(XDR xdr) { |
| mCredentialsLength = xdr.readInt(); |
| |
| mStamp = xdr.readInt(); |
| mHostName = xdr.readString(); |
| mUID = xdr.readInt(); |
| mGID = xdr.readInt(); |
| |
| int length = xdr.readInt(); |
| mAuxGIDs = new int[length]; |
| for (int i = 0; i < length; i++) { |
| mAuxGIDs[i] = xdr.readInt(); |
| } |
| } |
| |
| @Override |
| public void write(XDR xdr) { |
| int padding = 0; |
| // Ensure there are padding bytes if hostname is not a multiple of 4. |
| padding = 4 - (mHostName.getBytes(StandardCharsets.UTF_8).length % 4); |
| // padding bytes is zero if hostname is already a multiple of 4. |
| padding = padding % 4; |
| // mStamp + mHostName.length + mHostName + mUID + mGID + mAuxGIDs.count |
| mCredentialsLength = 20 + mHostName.getBytes(StandardCharsets.UTF_8).length; |
| mCredentialsLength = mCredentialsLength + padding; |
| // mAuxGIDs |
| if (mAuxGIDs != null && mAuxGIDs.length > 0) { |
| mCredentialsLength += mAuxGIDs.length * 4; |
| } |
| xdr.writeInt(mCredentialsLength); |
| |
| xdr.writeInt(mStamp); |
| xdr.writeString(mHostName); |
| xdr.writeInt(mUID); |
| xdr.writeInt(mGID); |
| |
| if((mAuxGIDs == null) || (mAuxGIDs.length == 0)) { |
| xdr.writeInt(0); |
| } else { |
| xdr.writeInt(mAuxGIDs.length); |
| for (int i = 0; i < mAuxGIDs.length; i++) { |
| xdr.writeInt(mAuxGIDs[i]); |
| } |
| } |
| } |
| |
| } |