com.hierynomus.ntlm.messages.TargetInfo Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of smbj Show documentation
SMB2 protocol library for communication with Windows servers
There is a newer version: 0.13.0
/*
 * Copyright (C)2016 - SMBJ Contributors
 *
 * 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.hierynomus.ntlm.messages;

import java.util.HashMap;
import java.util.Map;

import com.hierynomus.msdtyp.FileTime;
import com.hierynomus.msdtyp.MsDataTypes;
import com.hierynomus.protocol.commons.Charsets;
import com.hierynomus.protocol.commons.EnumWithValue;
import com.hierynomus.protocol.commons.buffer.Buffer;
import com.hierynomus.protocol.commons.buffer.Endian;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class TargetInfo {
    private static final Logger logger = LoggerFactory.getLogger(TargetInfo.class);

    private Map targetInfo = new HashMap<>();

    TargetInfo() {}

    TargetInfo readFrom(Buffer.PlainBuffer buffer) throws Buffer.BufferException {
        while (true) {
            int l = buffer.readUInt16();
            AvId avId = EnumWithValue.EnumUtils.valueOf(l, AvId.class, null); // AvId (2 bytes)
            logger.trace("NTLM channel contains {}({}) TargetInfo", avId, l);
            int avLen = buffer.readUInt16(); // AvLen (2 bytes)
            switch (avId) {
                case MsvAvEOL:
                    // End of sequence
                    return this;
                case MsvAvNbComputerName:
                case MsvAvNdDomainName:
                case MsvAvDnsComputerName:
                case MsvAvDnsDomainName:
                case MsvAvDnsTreeName:
                case MsvAvTargetName:
                    targetInfo.put(avId, buffer.readString(Charsets.UTF_16LE, avLen / 2));
                    break;
                case MsvAvFlags:
                    targetInfo.put(avId, buffer.readUInt32(Endian.LE));
                    break;
                case MsvAvTimestamp:
                    targetInfo.put(avId, MsDataTypes.readFileTime(buffer));
                    break;
                case MsvAvSingleHost:
                    break;
                case MsvChannelBindings:
                    break;
                default:
                    throw new IllegalStateException("Encountered unhandled AvId: " + avId);
            }
        }
    }

    public void writeTo(Buffer.PlainBuffer buffer) {
        for (AvId key : targetInfo.keySet()) {
            buffer.putUInt16((int) key.getValue()); // AvId (2 bytes)
            switch (key) {
                case MsvAvNbComputerName:
                case MsvAvNdDomainName:
                case MsvAvDnsComputerName:
                case MsvAvDnsDomainName:
                case MsvAvDnsTreeName:
                case MsvAvTargetName:
                    String val = getAvPairString(key);
                    buffer.putUInt16(val.length() * 2); // AvLen (2 bytes)
                    buffer.putString(val, Charsets.UTF_16LE);
                    break;
                case MsvAvFlags:
                    buffer.putUInt16(4); // AvLen (2 bytes)
                    buffer.putUInt32((int) getAvPairObject(key), Endian.LE);
                    break;
                case MsvAvTimestamp:
                    buffer.putUInt16(8); // AvLen (2 bytes)
                    FileTime ft = (FileTime) getAvPairObject(key);
                    MsDataTypes.putFileTime(ft, buffer);
                    break;
                case MsvAvSingleHost:
                case MsvChannelBindings:
                    break;
                default:
                    throw new IllegalStateException("Encountered unhandled AvId: " + key);
            }
        }
        buffer.putUInt16((int) AvId.MsvAvEOL.getValue()); // AvId (2 bytes)
        buffer.putUInt16(0); // AvLen (2 bytes)
    }

    public TargetInfo copy() {
        TargetInfo c = new TargetInfo();
        c.targetInfo = new HashMap<>(targetInfo);
        return c;
    }

    public Object getAvPairObject(AvId key) {
        return this.targetInfo.get(key);
    }

    public void putAvPairString(AvId key, String value) {
        this.targetInfo.put(key, value);
    }

    public String getAvPairString(AvId key) {
        Object obj = this.targetInfo.get(key);
        if (obj == null)
            return null;
        else
            return String.valueOf(obj);
    }

}