| /* |
| * 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.sshd.deprecated; |
| |
| import java.io.IOException; |
| import java.util.Arrays; |
| |
| import org.apache.sshd.client.auth.keyboard.UserInteraction; |
| import org.apache.sshd.client.session.ClientSession; |
| import org.apache.sshd.common.SshConstants; |
| import org.apache.sshd.common.util.GenericUtils; |
| import org.apache.sshd.common.util.buffer.Buffer; |
| |
| /** |
| * Userauth with keyboard-interactive method. |
| * |
| * @author <a href="mailto:dev@mina.apache.org">Apache MINA SSHD Project</a> |
| * @author <a href="mailto:j.kapitza@schwarze-allianz.de">Jens Kapitza</a> |
| */ |
| // CHECKSTYLE:OFF |
| public class UserAuthKeyboardInteractive extends AbstractUserAuth { |
| |
| private final String password; |
| |
| public UserAuthKeyboardInteractive(ClientSession session, String service, String password) { |
| super(session, service); |
| this.password = password; |
| } |
| |
| @Override |
| public Result next(Buffer buffer) throws IOException { |
| ClientSession session = getClientSession(); |
| String service = getService(); |
| boolean debugEnabled = log.isDebugEnabled(); |
| if (buffer == null) { |
| if (debugEnabled) { |
| log.debug("Send SSH_MSG_USERAUTH_REQUEST for password"); |
| } |
| |
| buffer = session.createBuffer(SshConstants.SSH_MSG_USERAUTH_REQUEST); |
| buffer.putString(session.getUsername()); |
| buffer.putString(service); |
| buffer.putString("keyboard-interactive"); |
| buffer.putString(""); |
| buffer.putString(""); |
| session.writePacket(buffer); |
| return Result.Continued; |
| } else { |
| int cmd = buffer.getUByte(); |
| switch (cmd) { |
| case SshConstants.SSH_MSG_USERAUTH_INFO_REQUEST: { |
| String name = buffer.getString(); |
| String instruction = buffer.getString(); |
| String language_tag = buffer.getString(); |
| if (debugEnabled) { |
| log.debug("next({}) Received SSH_MSG_USERAUTH_INFO_REQUEST - name={}, instruction={}, lang={}", |
| session, name, instruction, language_tag); |
| } |
| int num = buffer.getInt(); |
| // Protect against malicious or corrupted packets |
| if ((num < 0) || (num > SshConstants.SSH_REQUIRED_PAYLOAD_PACKET_LENGTH_SUPPORT)) { |
| log.error("next({}) illogical challenges count ({}) for name={}, instruction={}", |
| session, num, name, instruction); |
| throw new IndexOutOfBoundsException("Illogical challenges count: " + num); |
| } |
| |
| String[] prompt = (num <= 0) ? GenericUtils.EMPTY_STRING_ARRAY : new String[num]; |
| boolean[] echo = (num <= 0) ? GenericUtils.EMPTY_BOOLEAN_ARRAY : new boolean[num]; |
| for (int i = 0; i < num; i++) { |
| prompt[i] = buffer.getString(); |
| echo[i] = buffer.getBoolean(); |
| } |
| if (debugEnabled) { |
| log.debug("Promt: {}", Arrays.toString(prompt)); |
| log.debug("Echo: {}", echo); |
| } |
| |
| String[] rep = null; |
| if (num == 0) { |
| rep = GenericUtils.EMPTY_STRING_ARRAY; |
| } else if ((num == 1) && (password != null) && (!echo[0]) |
| && prompt[0].toLowerCase().startsWith("password:")) { |
| rep = new String[]{password}; |
| } else { |
| UserInteraction ui = session.getUserInteraction(); |
| if ((ui != null) && ui.isInteractionAllowed(session)) { |
| rep = ui.interactive(session, name, instruction, language_tag, prompt, echo); |
| } |
| } |
| if (rep == null) { |
| return Result.Failure; |
| } |
| |
| buffer = session.createBuffer(SshConstants.SSH_MSG_USERAUTH_INFO_RESPONSE); |
| buffer.putInt(rep.length); |
| for (String r : rep) { |
| buffer.putString(r); |
| } |
| session.writePacket(buffer); |
| return Result.Continued; |
| } |
| case SshConstants.SSH_MSG_USERAUTH_SUCCESS: |
| if (debugEnabled) { |
| log.debug("Received SSH_MSG_USERAUTH_SUCCESS"); |
| } |
| return Result.Success; |
| case SshConstants.SSH_MSG_USERAUTH_FAILURE: |
| { |
| String methods = buffer.getString(); |
| boolean partial = buffer.getBoolean(); |
| if (debugEnabled) { |
| log.debug("Received SSH_MSG_USERAUTH_FAILURE - partial={}, methods={}", partial, methods); |
| } |
| return Result.Failure; |
| } |
| default: |
| if (debugEnabled) { |
| log.debug("Received unknown packet {}", cmd); |
| } |
| return Result.Continued; |
| } |
| } |
| } |
| } |
| // CHECKSTYLE:ON |