com.julienviet.pgclient.impl.codec.encoder.message.PasswordMessage Maven / Gradle / Ivy

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/*
 * Copyright (C) 2017 Julien Viet
 *
 * 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 com.julienviet.pgclient.impl.codec.encoder.message;

import com.julienviet.pgclient.impl.codec.encoder.OutboundMessage;
import com.julienviet.pgclient.impl.codec.util.MD5Authentication;
import com.julienviet.pgclient.impl.codec.util.Util;
import io.netty.buffer.ByteBuf;

import java.util.Objects;

import static com.julienviet.pgclient.impl.codec.encoder.message.type.MessageType.PASSWORD_MESSAGE;

/**
 * @author Emad Alblueshi
 */

public class PasswordMessage implements OutboundMessage {

  final String hash;

  public PasswordMessage(String username, String password, byte[] salt) {
    this.hash = salt != null ? MD5Authentication.encode(username, password, salt) : password;
  }

  public String getHash() {
    return hash;
  }

  @Override
  public boolean equals(Object o) {
    if (this == o) return true;
    if (o == null || getClass() != o.getClass()) return false;
    PasswordMessage that = (PasswordMessage) o;
    return Objects.equals(hash, that.hash);
  }

  @Override
  public void encode(ByteBuf out) {
    int pos = out.writerIndex();
    out.writeByte(PASSWORD_MESSAGE);
    out.writeInt(0);
    Util.writeCStringUTF8(out, hash);
    out.setInt(pos + 1, out.writerIndex() - pos- 1);
  }

  @Override
  public int hashCode() {
    return Objects.hash(hash);
  }

  @Override
  public String toString() {
    return "PasswordMessage{" +
      "hash='" + hash + '\'' +
      '}';
  }

}