Example usage for io.netty.buffer ByteBuf writeBytes

Introduction

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

Prototype

public abstract int writeBytes(ScatteringByteChannel in, int length) throws IOException;

Source Link

Document

Transfers the content of the specified channel to this buffer starting at the current writerIndex and increases the writerIndex by the number of the transferred bytes.

Usage

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

License:Open Source License

/**
 * @param decrypted/*  w ww .  jav a2 s . c  om*/
 * @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.MuKeyFactory.java

License:Open Source License

private static void readFile(String path, long[] out_dat) {

    AssetManager assetManager = Corax.fetch(AssetManager.class);

    ByteBuf buff = Unpooled.buffer().order(ByteOrder.LITTLE_ENDIAN);

    try (InputStream is = assetManager.loadAsset(FileKey.class, path)) {
        buff.writeBytes(is, is.available());
    } catch (IOException e) {
        e.printStackTrace();//w ww .  ja  v a 2s .c  o  m
    }

    buff.readerIndex(6);
    int pointer = 0;
    for (int i = 0; i < 3; i++) {
        long[] buf = new long[4];

        for (int j = 0; j < 4; j++) {
            buf[j] = buff.readUnsignedInt();
        }

        out_dat[pointer++] = buf[0] ^ (xor_tab_datfile[0]);
        out_dat[pointer++] = buf[1] ^ (xor_tab_datfile[1] & 0xFFFFFFFFL);
        out_dat[pointer++] = buf[2] ^ (xor_tab_datfile[2] & 0xFFFFFFFFL);
        out_dat[pointer++] = buf[3] ^ (xor_tab_datfile[3]);
    }
}

---

• «
• 1
• 2
• 3
• »