com.hierynomus.mssmb2.messages.negotiate.SMB2EncryptionCapabilities 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

The newest version!

/*
 * 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.mssmb2.messages.negotiate;

import com.hierynomus.mssmb2.SMB3EncryptionCipher;
import com.hierynomus.protocol.commons.EnumWithValue;
import com.hierynomus.protocol.commons.buffer.Buffer;
import com.hierynomus.smb.SMBBuffer;

import java.util.ArrayList;
import java.util.List;

/**
 * [MS-SMB2].pdf 2.2.3.1.2 / 2.2.4.1.2 SMB2_ENCRYPTION_CAPABILITIES Request/Response
 */
public class SMB2EncryptionCapabilities extends SMB2NegotiateContext {
    private List cipherList;


    public SMB2EncryptionCapabilities() {
        super(SMB2NegotiateContextType.SMB2_ENCRYPTION_CAPABILITIES);
        this.cipherList = new ArrayList<>();
    }

    public SMB2EncryptionCapabilities(List cipherList) {
        super(SMB2NegotiateContextType.SMB2_ENCRYPTION_CAPABILITIES);
        this.cipherList = cipherList;
    }

    @Override
    protected int writeContext(SMBBuffer buffer) {
        if (cipherList == null || cipherList.isEmpty()) {
            throw new IllegalStateException("Cannot serialize an empty or null cipherList");
        }

        buffer.putUInt16(cipherList.size()); // CipherCount (2 bytes)
        // Ciphers (variable)
        for (SMB3EncryptionCipher encryptionCipher : cipherList) {
            buffer.putUInt16((int) encryptionCipher.getValue()); // Cipher (2 bytes)
        }
        return 2 + 2 * cipherList.size();

    }

    @Override
    protected void readContext(SMBBuffer buffer, int dataSize) throws Buffer.BufferException {
        int cipherCount = buffer.readUInt16(); // CipherCount (2 bytes)
        for (int i = 0; i < cipherCount; i++) {
            cipherList.add(EnumWithValue.EnumUtils.valueOf(buffer.readUInt16(), SMB3EncryptionCipher.class, null)); // Cipher (2 bytes)
        }
    }

    public List getCipherList() {
        return cipherList;
    }
}