waffle.util.NtlmMessage Maven / Gradle / Ivy
/*
* MIT License
*
* Copyright (c) 2010-2024 The Waffle Project Contributors: https://github.com/Waffle/waffle/graphs/contributors
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package waffle.util;
/**
* Rudimentary NTLM message utility.
*/
public final class NtlmMessage {
// NTLM messages start with 0x4e544c4d53535000, NTLMSSP signature
/** The Constant NTLM_SSP_SIGNATURE. */
private static final byte[] NTLM_SSP_SIGNATURE = { 0x4e, 0x54, 0x4c, 0x4d, 0x53, 0x53, 0x50, 0x00 };
/**
* Checks if is ntlm message.
*
* @param message
* the message
*
* @return true, if is ntlm message
*/
public static boolean isNtlmMessage(final byte[] message) {
if (message == null || message.length < NtlmMessage.NTLM_SSP_SIGNATURE.length) {
return false;
}
for (int i = 0; i < NtlmMessage.NTLM_SSP_SIGNATURE.length; i++) {
if (NtlmMessage.NTLM_SSP_SIGNATURE[i] != message[i]) {
return false;
}
}
return true;
}
/**
* Get NTLM message type.
*
* @param message
* Assuming a valid NTLM message.
*
* @return Message type.
*/
public static int getMessageType(final byte[] message) {
return message[NtlmMessage.NTLM_SSP_SIGNATURE.length];
}
/**
* Instantiates a new ntlm message.
*/
private NtlmMessage() {
// Prevent Instantiation of object
}
}