Example usage for io.netty.buffer ByteBuf slice

Introduction

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

Prototype

public abstract ByteBuf slice(int index, int length);

Source Link

Document

Returns a slice of this buffer's sub-region.

Usage

From source file:io.datty.msgpack.core.ValueMessageReader.java

License:Apache License

public ByteBuf readBinary(ByteBuf source, boolean copy) {
    int length = readBinaryHeader(source);
    if (length > source.readableBytes()) {
        throw new MessageParseException(
                "insufficient buffer length: " + source.readableBytes() + ", required length: " + length);
    }//from  ww  w  .  j a  v a 2s  . c o m
    if (copy) {
        ByteBuf dst = source.alloc().buffer(length);
        source.readBytes(dst, length);
        return dst;
    } else {
        ByteBuf slice = source.slice(source.readerIndex(), length);
        source.skipBytes(length);
        return slice;
    }
}

From source file:io.grpc.alts.internal.AltsChannelCrypter.java

License:Apache License

@Override
public void encrypt(ByteBuf outBuf, List<ByteBuf> plainBufs) throws GeneralSecurityException {
    checkArgument(outBuf.nioBufferCount() == 1);
    // Copy plaintext buffers into outBuf for in-place encryption on single direct buffer.
    ByteBuf plainBuf = outBuf.slice(outBuf.writerIndex(), outBuf.writableBytes());
    plainBuf.writerIndex(0);//from   w ww  .  j av  a  2s.c o  m
    for (ByteBuf inBuf : plainBufs) {
        plainBuf.writeBytes(inBuf);
    }

    verify(outBuf.writableBytes() == plainBuf.readableBytes() + TAG_LENGTH);
    ByteBuffer out = outBuf.internalNioBuffer(outBuf.writerIndex(), outBuf.writableBytes());
    ByteBuffer plain = out.duplicate();
    plain.limit(out.limit() - TAG_LENGTH);

    byte[] counter = incrementOutCounter();
    int outPosition = out.position();
    aeadCrypter.encrypt(out, plain, counter);
    int bytesWritten = out.position() - outPosition;
    outBuf.writerIndex(outBuf.writerIndex() + bytesWritten);
    verify(!outBuf.isWritable());
}

From source file:io.grpc.alts.internal.AltsChannelCrypter.java

License:Apache License

@Override
public void decrypt(ByteBuf out, ByteBuf tag, List<ByteBuf> ciphertextBufs) throws GeneralSecurityException {

    ByteBuf cipherTextAndTag = out.slice(out.writerIndex(), out.writableBytes());
    cipherTextAndTag.writerIndex(0);/*w ww. j a va  2  s. c  o m*/

    for (ByteBuf inBuf : ciphertextBufs) {
        cipherTextAndTag.writeBytes(inBuf);
    }
    cipherTextAndTag.writeBytes(tag);

    decrypt(out, cipherTextAndTag);
}

From source file:io.grpc.alts.internal.AltsTsiFrameProtector.java

License:Apache License

private static ByteBuf writeSlice(ByteBuf in, int len) {
    checkArgument(len <= in.writableBytes());
    ByteBuf out = in.slice(in.writerIndex(), len);
    in.writerIndex(in.writerIndex() + len);
    return out.writerIndex(0);
}

From source file:io.grpc.alts.internal.ByteBufTestUtils.java

License:Apache License

static ByteBuf writeSlice(ByteBuf in, int len) {
    Preconditions.checkArgument(len <= in.writableBytes());
    ByteBuf out = in.slice(in.writerIndex(), len);
    in.writerIndex(in.writerIndex() + len);
    return out.writerIndex(0);
}

From source file:io.grpc.alts.internal.ChannelCrypterNettyTestBase.java

License:Apache License

FrameDecrypt frameDecryptOfEncrypt(FrameEncrypt frameEncrypt) {
    int tagLen = client.getSuffixLength();
    FrameDecrypt frameDecrypt = new FrameDecrypt();
    ByteBuf out = frameEncrypt.out;
    frameDecrypt.ciphertext = Collections
            .singletonList(out.slice(out.readerIndex(), out.readableBytes() - tagLen));
    frameDecrypt.tag = out.slice(out.readerIndex() + out.readableBytes() - tagLen, tagLen);
    frameDecrypt.out = getDirectBuffer(out.readableBytes(), ref);
    return frameDecrypt;
}

From source file:io.grpc.alts.internal.ChannelCrypterNettyTestBase.java

License:Apache License

@Test
public void encryptDecryptComposite() throws GeneralSecurityException {
    String message = "Hello world";
    int lastLen = 2;
    byte[] messageBytes = message.getBytes(UTF_8);
    FrameEncrypt frameEncrypt = new FrameEncrypt();
    ByteBuf plain1 = getDirectBuffer(messageBytes.length - lastLen, ref);
    ByteBuf plain2 = getDirectBuffer(lastLen, ref);
    plain1.writeBytes(messageBytes, 0, messageBytes.length - lastLen);
    plain2.writeBytes(messageBytes, messageBytes.length - lastLen, lastLen);
    ByteBuf plain = Unpooled.wrappedBuffer(plain1, plain2);
    frameEncrypt.plain = Collections.singletonList(plain);
    frameEncrypt.out = getDirectBuffer(messageBytes.length + client.getSuffixLength(), ref);

    client.encrypt(frameEncrypt.out, frameEncrypt.plain);

    int tagLen = client.getSuffixLength();
    FrameDecrypt frameDecrypt = new FrameDecrypt();
    ByteBuf out = frameEncrypt.out;
    int outLen = out.readableBytes();
    ByteBuf cipher1 = getDirectBuffer(outLen - lastLen - tagLen, ref);
    ByteBuf cipher2 = getDirectBuffer(lastLen, ref);
    cipher1.writeBytes(out, 0, outLen - lastLen - tagLen);
    cipher2.writeBytes(out, outLen - tagLen - lastLen, lastLen);
    ByteBuf cipher = Unpooled.wrappedBuffer(cipher1, cipher2);
    frameDecrypt.ciphertext = Collections.singletonList(cipher);
    frameDecrypt.tag = out.slice(out.readerIndex() + out.readableBytes() - tagLen, tagLen);
    frameDecrypt.out = getDirectBuffer(out.readableBytes(), ref);

    server.decrypt(frameDecrypt.out, frameDecrypt.tag, frameDecrypt.ciphertext);
    assertThat(frameEncrypt.plain.get(0).slice(0, frameDecrypt.out.readableBytes()))
            .isEqualTo(frameDecrypt.out);
}

From source file:io.moquette.parser.netty.TestUtils.java

License:Open Source License

/**
 * Verify the presence of the given string starting from the current position
 * inside the buffer./*w  ww  .  java 2  s.  c  om*/
 */
static void verifyString(String str, ByteBuf buff) throws UnsupportedEncodingException {
    ByteBuf tmpBuff = Unpooled.buffer(2);
    byte[] raw = str.getBytes("UTF-8");
    tmpBuff.writeShort(raw.length);
    tmpBuff.writeBytes(raw);
    int buffLen = raw.length + 2;
    verifyByteBuf(tmpBuff, buff.slice(buff.readerIndex(), buffLen));
    buff.skipBytes(buffLen);
}

From source file:io.nebo.thrift.DefaultThriftFrameDecoder.java

License:Apache License

protected ByteBuf extractFrame(ByteBuf buffer, int index, int length) {
    // Slice should be sufficient here (and avoids the copy in LengthFieldBasedFrameDecoder)
    // because we know no one is going to modify the contents in the read buffers.
    return buffer.slice(index, length);
}

From source file:io.nodyn.smalloc.Smalloc.java

License:Apache License

public static Object sliceOnto(JSObject src, JSObject dest, int start, int end) {
    ByteBuf srcBuf = ((NettyExternalIndexedData) src.getExternalIndexedData()).buffer();
    int len = end - start;
    ByteBuf destBuf = srcBuf.slice(start, len);
    destBuf.writerIndex(0);/*from w  ww  . ja v  a  2s . c  o  m*/
    dest.setExternalIndexedData(new NettyExternalIndexedData(destBuf));
    return src;
}