org.seasar.robot.client.http.ntlm.JcifsEngine.java Source code

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Here is the source code for org.seasar.robot.client.http.ntlm.JcifsEngine.java

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/*
 * Copyright 2004-2014 the Seasar Foundation and the Others.
 *
 * 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 org.seasar.robot.client.http.ntlm;

import java.io.IOException;

import jcifs.ntlmssp.NtlmFlags;
import jcifs.ntlmssp.Type1Message;
import jcifs.ntlmssp.Type2Message;
import jcifs.ntlmssp.Type3Message;
import jcifs.util.Base64;

import org.apache.http.impl.auth.NTLMEngine;
import org.apache.http.impl.auth.NTLMEngineException;

/**
 * JcifsEngine is a NTLM Engine implementation based on JCIFS.
 * 
 * @author shinsuke
 * 
 */
public class JcifsEngine implements NTLMEngine {

    private static final int TYPE_1_FLAGS = NtlmFlags.NTLMSSP_NEGOTIATE_56 | NtlmFlags.NTLMSSP_NEGOTIATE_128
            | NtlmFlags.NTLMSSP_NEGOTIATE_NTLM2 | NtlmFlags.NTLMSSP_NEGOTIATE_ALWAYS_SIGN
            | NtlmFlags.NTLMSSP_REQUEST_TARGET;

    @Override
    public String generateType1Msg(final String domain, final String workstation) throws NTLMEngineException {
        final Type1Message type1Message = new Type1Message(TYPE_1_FLAGS, domain, workstation);
        return Base64.encode(type1Message.toByteArray());
    }

    @Override
    public String generateType3Msg(final String username, final String password, final String domain,
            final String workstation, final String challenge) throws NTLMEngineException {
        Type2Message type2Message;
        try {
            type2Message = new Type2Message(Base64.decode(challenge));
        } catch (final IOException exception) {
            throw new NTLMEngineException("Invalid NTLM type 2 message", exception);
        }
        final int type2Flags = type2Message.getFlags();
        final int type3Flags = type2Flags
                & (0xffffffff ^ (NtlmFlags.NTLMSSP_TARGET_TYPE_DOMAIN | NtlmFlags.NTLMSSP_TARGET_TYPE_SERVER));
        final Type3Message type3Message = new Type3Message(type2Message, password, domain, username, workstation,
                type3Flags);
        return Base64.encode(type3Message.toByteArray());
    }
}