Example usage for io.netty.buffer ByteBuf getUnsignedByte

List of usage examples for io.netty.buffer ByteBuf getUnsignedByte

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Introduction

In this page you can find the example usage for io.netty.buffer ByteBuf getUnsignedByte.

Prototype

public abstract short getUnsignedByte(int index);

Source Link

Document

Gets an unsigned byte at the specified absolute index in this buffer.

Usage

From source file:com.tesora.dve.db.mysql.common.MysqlAPIUtils.java

License:Open Source License

static boolean isLengthCodedLongNull(ByteBuf cb) {
    boolean isNull = (cb.getUnsignedByte(cb.readerIndex()) == LEN_CODED_NULL);
    if (isNull)//from  w  w  w  .  j  a v  a  2  s.  co  m
        cb.readUnsignedByte();

    return isNull;
}

From source file:com.twitter.http2.HttpFrameDecoder.java

License:Apache License

/**
 * Reads the HTTP/2 Frame Header and sets the length, type, flags, and streamId member variables.
 *
 * @param buffer input buffer containing the entire 9-octet header
 *///from w w w  . j ava  2s  .  co m
private void readFrameHeader(ByteBuf buffer) {
    int frameOffset = buffer.readerIndex();
    length = getUnsignedMedium(buffer, frameOffset);
    type = buffer.getUnsignedByte(frameOffset + 3);
    flags = buffer.getByte(frameOffset + 4);
    streamId = getUnsignedInt(buffer, frameOffset + 5);
    buffer.skipBytes(HTTP_FRAME_HEADER_SIZE);
}

From source file:com.vethrfolnir.game.network.mu.crypt.MuCryptUtils.java

License:Open Source License

static int GetDecodedSize(ByteBuf buff) {
    switch (buff.getUnsignedByte(0)) {
    case 0xC1://w  w  w . ja va  2  s. c  om
        return GetPacketSize(buff);
    case 0xC3:
        return (((GetPacketSize(buff) - 2) * 8) / 11) + 1;
    case 0xC2:
        return GetPacketSize(buff);
    case 0xC4:
        return (((GetPacketSize(buff) - 3) * 8) / 11) + 2;
    default:
        return 0;
    }
}

From source file:com.vethrfolnir.game.network.mu.crypt.MuCryptUtils.java

License:Open Source License

static int GetHeaderSize(ByteBuf buff) {
    switch (buff.getUnsignedByte(0)) {
    case 0xC1:// w  w w.j  a  va 2 s  .  c o  m
    case 0xC3:
        return 2;
    case 0xC2:
    case 0xC4:
        return 3;
    }
    return -1;
}

From source file:com.vethrfolnir.game.network.mu.crypt.MuCryptUtils.java

License:Open Source License

static int GetPacketSize(ByteBuf buff) {
    switch (buff.getUnsignedByte(0)) {
    case 0xC1://from ww  w .  java 2 s.  c  o  m
    case 0xC3:
        return buff.getUnsignedByte(1);
    case 0xC2:
    case 0xC4:
        return buff.getUnsignedByte(1) << 8 | buff.getUnsignedByte(2) & 0xFF;
    }
    return -1;
}

From source file:com.vethrfolnir.game.network.mu.crypt.MuCryptUtils.java

License:Open Source License

public static final short[] getAsUByteArray(ByteBuf buff) {
    short[] uByteArray = new short[buff.capacity()];
    for (int i = 0; i < uByteArray.length; i++) {
        uByteArray[i] = buff.getUnsignedByte(i);
    }/*from w w  w . j  a  va2s . com*/
    return uByteArray;
}

From source file:com.vethrfolnir.game.network.mu.crypt.MuCryptUtils.java

License:Open Source License

public static final short[] getAsUByteArray(ByteBuf buff, short[] uByteArray) {
    for (int i = 0; i < uByteArray.length; i++) {
        uByteArray[i] = buff.getUnsignedByte(i);
    }//w w w.  j  a  va  2s.  c o  m
    return uByteArray;
}

From source file:com.vethrfolnir.game.network.mu.crypt.MuDecoder.java

License:Open Source License

/**
 * C3 C4/*from   w ww .ja  v a  2s .c  o m*/
 * @param buff
 * @return 
 */
public static ByteBuf DecodePacket(ByteBuf buff) {
    if (buff.writerIndex() <= 2) {
        log.fatal("Ambiguous buffer! " + ByteBufUtil.hexDump(buff));
        return null;
    }
    if (buff.readerIndex() != 0) {
        log.warn("Buffer must be at index 0!");
        buff.readerIndex(0);
    }

    int header = GetHeaderSize(buff);
    int packetSize = GetPacketSize(buff);
    int decodedSize = GetDecodedSize(buff);

    int contentSize = packetSize - header;

    //System.out.println("Header[0x"+PrintData.fillHex(buff.getUnsignedByte(0), 2)+"] size: "+GetHeaderSize(buff)+" Packet Size: "+GetPacketSize(buff) +" Content Size: "+contentSize +" Decoded: "+ GetDecodedSize(buff));

    ByteBuf out = alloc.heapBuffer(decodedSize, decodedSize);

    int originalHead = buff.getUnsignedByte(0);

    buff.readerIndex(header);
    int size = DecodeBlock(buff, out, header, contentSize);
    //buff.clear();

    size += header - 1;

    out.writerIndex(0);
    out.writeByte(originalHead);

    switch (originalHead) {
    case 0xc3:
        out.writeByte(size);
        break;
    case 0xC4:
        out.writeByte(size >> 8);
        out.writeByte(size & 0xFF);
        break;
    }

    out.writerIndex(size);
    out.readerIndex(header);

    DecXor32(out, header, size);

    out.readerIndex(0);
    return out;
}

From source file:com.vethrfolnir.game.network.mu.crypt.MuDecoder.java

License:Open Source License

/**
 * @param decrypted//from  ww  w.j  a v  a  2  s .  co  m
 * @param encrypted
 * @param decServerKeys
 * @return
 */
private static int BlockDecode(ByteBuf decrypted, short[] InBuf, ByteBuf converter, long[] Keys) {

    long[] Ring = new long[4];
    short[] Shift = new short[4];

    ShiftBytes(Shift, 0x00, InBuf, 0x00, 0x10);
    ShiftBytes(Shift, 0x16, InBuf, 0x10, 0x02);

    writeByteArray(converter, Shift);
    flushArray(Shift, 0, 4);

    ShiftBytes(Shift, 0x00, InBuf, 0x12, 0x10);
    ShiftBytes(Shift, 0x16, InBuf, 0x22, 0x02);

    writeByteArray(converter, Shift);
    flushArray(Shift, 0, 4);

    ShiftBytes(Shift, 0x00, InBuf, 0x24, 0x10);
    ShiftBytes(Shift, 0x16, InBuf, 0x34, 0x02);

    writeByteArray(converter, Shift);
    flushArray(Shift, 0, 4);

    ShiftBytes(Shift, 0x00, InBuf, 0x36, 0x10);
    ShiftBytes(Shift, 0x16, InBuf, 0x46, 0x02);

    writeByteArray(converter, Shift);
    flushArray(Shift, 0, 4);

    // for (int i = 0; i < Ring.length; i++) {
    // System.err.print(Integer.toHexString((int) Ring[i])+" ");;
    // }

    // System.err.println();

    for (int i = 0; i < Ring.length; i++) {
        Ring[i] = converter.readInt();
    }
    converter.clear();

    Ring[2] = Ring[2] ^ Keys[10] ^ (Ring[3] & 0xFFFF);
    Ring[1] = Ring[1] ^ Keys[9] ^ (Ring[2] & 0xFFFF);
    Ring[0] = Ring[0] ^ Keys[8] ^ (Ring[1] & 0xFFFF);

    //       System.err.println("Finished Ring: ");
    //       for (int i = 0; i < Ring.length; i++) {
    //       System.err.print(Integer.toHexString((int) Ring[i])+" ");;
    //       }
    //       System.err.println();
    int[] CryptBuf = new int[4];

    // Had ushort cast here.
    CryptBuf[0] = (int) (Keys[8] ^ ((Ring[0] * Keys[4]) % Keys[0]));

    CryptBuf[1] = (int) (Keys[9] ^ ((Ring[1] * Keys[5]) % Keys[1]) ^ (Ring[0] & 0xFFFF));
    CryptBuf[2] = (int) (Keys[10] ^ ((Ring[2] * Keys[6]) % Keys[2]) ^ (Ring[1] & 0xFFFF));
    CryptBuf[3] = (int) (Keys[11] ^ ((Ring[3] * Keys[7]) % Keys[3]) ^ (Ring[2] & 0xFFFF));

    //      System.err.println("Pre done: " + PrintData.printData(CryptBuf));

    short[] Finale = new short[2];
    ShiftBytes(Finale, 0x00, InBuf, 0x48, 0x10);
    Finale[0] ^= Finale[1];
    Finale[0] ^= 0x3D;

    converter.clear();
    for (int i = 0; i < CryptBuf.length; i++) {
        converter.writeShort(CryptBuf[i]);
    }

    decrypted.writeBytes(converter, Finale[0]);
    converter.clear();

    //System.out.println(PrintData.printData(decrypted.nioBuffer()));

    // System.err.println("Finale: "+ Finale[0]);

    short Check = 0xF8;
    for (int i = 0; i < Finale[0]; ++i)
        Check = (short) (Check ^ decrypted.getUnsignedByte(i));

    if (Finale[1] == Check)
        return Finale[0];

    //System.err.println("Finale["+Finale[0]+"] And done: "+PrintData.printData(decrypted.nioBuffer()));

    return Finale[0];
}

From source file:com.vethrfolnir.game.network.mu.crypt.MuDecoder.java

License:Open Source License

private static void DecXor32(ByteBuf buff, int SizeOfHeader, int Len) {

    for (int i = Len - 1; i > 0; i--) {
        int Buff = buff.getUnsignedByte(buff.readerIndex() + i);
        Buff ^= (Xor32Keys[(i + SizeOfHeader) & 31] ^ buff.getUnsignedByte((buff.readerIndex() + i) - 1));
        buff.setByte(buff.readerIndex() + i, Buff);
    }//from   w w  w .  j  a v  a2s . com
}