Example usage for io.netty.buffer ByteBuf getByte

Introduction

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

Prototype

public abstract byte getByte(int index);

Source Link

Document

Gets a byte at the specified absolute index in this buffer.

Usage

From source file:io.codis.nedis.handler.RedisResponseDecoder.java

License:Apache License

private boolean decode(ByteBuf in, List<Object> out, Object nullValue) throws Exception {
    if (in.readableBytes() < 2) {
        return false;
    }// w  ww .j a  v  a  2 s .c  om
    byte b = in.readByte();
    switch (b) {
    case '+': {
        String reply = decodeString(in);
        if (reply == null) {
            return false;
        }
        out.add(reply);
        return true;
    }
    case '-': {
        String reply = decodeString(in);
        if (reply == null) {
            return false;
        }
        out.add(new RedisResponseException(reply));
        return true;
    }
    case ':': {
        Long reply = decodeLong(in);
        if (reply == null) {
            return false;
        }
        out.add(reply);
        return true;
    }
    case '$': {
        Long numBytes = decodeLong(in);
        if (numBytes == null) {
            return false;
        }
        if (numBytes.intValue() == -1) {
            out.add(nullValue);
            return true;
        }
        if (in.readableBytes() < numBytes.intValue() + 2) {
            return false;
        }
        if (in.getByte(in.readerIndex() + numBytes.intValue()) != '\r'
                || in.getByte(in.readerIndex() + numBytes.intValue() + 1) != '\n') {
            throw new ProtocolException("Response is not ended by CRLF");
        }
        byte[] reply = new byte[numBytes.intValue()];
        in.readBytes(reply);
        // skip CRLF
        in.skipBytes(2);
        out.add(reply);
        return true;
    }
    case '*': {
        Long numReplies = decodeLong(in);
        if (numReplies == null) {
            return false;
        }
        if (numReplies.intValue() == -1) {
            out.add(nullValue);
            return true;
        }
        List<Object> replies = new ArrayList<>();
        for (int i = 0; i < numReplies.intValue(); i++) {
            if (!decode(in, replies, null)) {
                return false;
            }
        }
        out.add(replies);
        return true;
    }
    default:
        throw new ProtocolException("Unknown leading char: " + (char) b);
    }
}

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

License:Apache License

public MessageFormat getNextFormat(ByteBuf buffer) {
    return MessageFormat.valueOf(buffer.getByte(buffer.readerIndex()));
}

---

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

License:Apache License

public byte getNextCode(ByteBuf buffer) {
    return buffer.getByte(buffer.readerIndex());
}

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From source file:io.grapebaba.vineyard.grape.codec.GrapeCodec.java

License:Apache License

@Override
public GrapeMessage decode(ByteBuf byteBuf) {
    final int messageTypePosition = 0;
    MessageType messageType = valueOf(byteBuf.getByte(messageTypePosition));
    switch (messageType) {
    case REQUEST:
        return new RequestMessageCodec().decode(byteBuf);
    case RESPONSE:
        return new ResponseMessageCodec().decode(byteBuf);
    case HEARTBEAT_REQUEST:
        return new HeartbeatRequestMessage();
    case HEARTBEAT_RESPONSE:
        return new HeartbeatResponseMessage();
    default://  w  w w  .  java2 s . c  o  m
        throw new RuntimeException("Cannot decode message by GrapeCodec");
    }
}

---

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

License:Apache License

/** Test corrupted ciphertext. */
public static void corruptedCiphertextTest(Handshakers handshakers, RegisterRef ref)
        throws GeneralSecurityException {
    performHandshake(DEFAULT_TRANSPORT_BUFFER_SIZE, handshakers);

    TsiFrameProtector sender = handshakers.getClient().createFrameProtector(alloc);
    TsiFrameProtector receiver = handshakers.getServer().createFrameProtector(alloc);

    String message = "hello world";
    ByteBuf plaintextBuffer = Unpooled.wrappedBuffer(message.getBytes(UTF_8));
    final List<ByteBuf> protectOut = new ArrayList<>();
    List<Object> unprotectOut = new ArrayList<>();

    sender.protectFlush(Collections.singletonList(plaintextBuffer), new Consumer<ByteBuf>() {
        @Override/*from   ww w .j  a v  a 2  s.  co m*/
        public void accept(ByteBuf buf) {
            protectOut.add(buf);
        }
    }, alloc);
    assertThat(protectOut.size()).isEqualTo(1);

    ByteBuf protect = ref.register(protectOut.get(0));
    int ciphertextIdx = protect.writerIndex() - FakeChannelCrypter.getTagBytes() - 2;
    protect.setByte(ciphertextIdx, protect.getByte(ciphertextIdx) + 1);

    try {
        receiver.unprotect(protect, unprotectOut, alloc);
        fail("Exception expected");
    } catch (AEADBadTagException ex) {
        assertThat(ex).hasMessageThat().contains(DECRYPTION_FAILURE_RE);
    }

    sender.destroy();
    receiver.destroy();
}

---

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

License:Apache License

/** Test corrupted tag. */
public static void corruptedTagTest(Handshakers handshakers, RegisterRef ref) throws GeneralSecurityException {
    performHandshake(DEFAULT_TRANSPORT_BUFFER_SIZE, handshakers);

    TsiFrameProtector sender = handshakers.getClient().createFrameProtector(alloc);
    TsiFrameProtector receiver = handshakers.getServer().createFrameProtector(alloc);

    String message = "hello world";
    ByteBuf plaintextBuffer = Unpooled.wrappedBuffer(message.getBytes(UTF_8));
    final List<ByteBuf> protectOut = new ArrayList<>();
    List<Object> unprotectOut = new ArrayList<>();

    sender.protectFlush(Collections.singletonList(plaintextBuffer), new Consumer<ByteBuf>() {
        @Override//from w w w.  j a va2 s . c o  m
        public void accept(ByteBuf buf) {
            protectOut.add(buf);
        }
    }, alloc);
    assertThat(protectOut.size()).isEqualTo(1);

    ByteBuf protect = ref.register(protectOut.get(0));
    int tagIdx = protect.writerIndex() - 1;
    protect.setByte(tagIdx, protect.getByte(tagIdx) + 1);

    try {
        receiver.unprotect(protect, unprotectOut, alloc);
        fail("Exception expected");
    } catch (AEADBadTagException ex) {
        assertThat(ex).hasMessageThat().contains(DECRYPTION_FAILURE_RE);
    }

    sender.destroy();
    receiver.destroy();
}

---

From source file:io.grpc.netty.GrpcHpackDecoder.java

License:Apache License

/**
 * Unsigned Little Endian Base 128 Variable-Length Integer Encoding
 * <p>// w  w  w .j a v  a  2 s . c  o m
 * Visible for testing only!
 */
static long decodeULE128(ByteBuf in, long result) throws Http2Exception {
    assert result <= 0x7f && result >= 0;
    final boolean resultStartedAtZero = result == 0;
    final int writerIndex = in.writerIndex();
    for (int readerIndex = in.readerIndex(), shift = 0; readerIndex < writerIndex; ++readerIndex, shift += 7) {
        byte b = in.getByte(readerIndex);
        if (shift == 56 && (((b & 0x80) != 0 || b == 0x7F) && !resultStartedAtZero)) {
            // the maximum value that can be represented by a signed 64 bit number is:
            // [0x01L, 0x7fL] + 0x7fL + (0x7fL << 7) + (0x7fL << 14) + (0x7fL << 21) + (0x7fL << 28) + (0x7fL << 35)
            // + (0x7fL << 42) + (0x7fL << 49) + (0x7eL << 56)
            // OR
            // 0x0L + 0x7fL + (0x7fL << 7) + (0x7fL << 14) + (0x7fL << 21) + (0x7fL << 28) + (0x7fL << 35) +
            // (0x7fL << 42) + (0x7fL << 49) + (0x7fL << 56)
            // this means any more shifts will result in overflow so we should break out and throw an error.
            throw DECODE_ULE_128_TO_LONG_DECOMPRESSION_EXCEPTION;
        }

        if ((b & 0x80) == 0) {
            in.readerIndex(readerIndex + 1);
            return result + ((b & 0x7FL) << shift);
        }
        result += (b & 0x7FL) << shift;
    }

    throw DECODE_ULE_128_DECOMPRESSION_EXCEPTION;
}

---

From source file:io.lettuce.core.protocol.RedisStateMachine.java

License:Apache License

private int findLineEnd(ByteBuf buffer) {

    int index = buffer.forEachByte(ByteProcessor.FIND_LF);
    return (index > 0 && buffer.getByte(index - 1) == '\r') ? index : -1;
}

---

From source file:io.netlibs.bgp.netty.codec.UpdatePacketDecoder.java

License:Apache License

private ExtendedCommunityPathAttribute decodeExtendedCommunityPathAttribute(final ByteBuf buffer) {
    final ExtendedCommunityPathAttribute attr = new ExtendedCommunityPathAttribute();

    if ((buffer.readableBytes() < 8) || ((buffer.readableBytes() % 8) != 0)) {
        throw new OptionalAttributeErrorException();
    }//from   www.j a  va 2s .  co m

    while (buffer.isReadable()) {
        AbstractExtendedCommunityInterface extcomm;
        // we need to check whether this is a transitive or non-transitive value
        // and then determine whether we need to red the lower type byte
        byte higherType = buffer.readByte();
        byte higherTypeCompare = (byte) (higherType & ~(1 << 6));
        if (((higherType >> 6) & 1) == 0) {
            // bit 7 is not set in the byte, therefore this is a transitive type
            // clear bit 8, not interested in this value
            TransitiveExtendedCommunityType transCommType = TransitiveExtendedCommunityType
                    .fromCode((byte) (higherType & (~(3 << 6))));

            switch (transCommType) {
            case TWO_OCTET_AS_SPECIFIC:
                TransitiveTwoOctetASSpecificExtCommSubTypes twoOctASNLowerType = TransitiveTwoOctetASSpecificExtCommSubTypes
                        .fromCode(buffer.readByte());
                switch (twoOctASNLowerType) {
                case ROUTE_TARGET:
                    extcomm = new TransitiveTwoByteASNFourByteAdministratorRT((int) buffer.readShort(),
                            (long) buffer.readInt());
                    break;
                default:
                    // all non-RT types are currently unimplemented
                    extcomm = new UnknownTransitiveTwoByteASNSpecificExtendedCommunity(transCommType,
                            twoOctASNLowerType, buffer.readBytes(6).array());
                }
                break;

            case TWO_OCTET_IPv4_ADDRESS_SPECIFIC:

                TransitiveIPv4AddressSpecificExtCommSubTypes ipv4LowerType = TransitiveIPv4AddressSpecificExtCommSubTypes
                        .fromCode(buffer.readByte());

                switch (ipv4LowerType) {
                case ROUTE_TARGET:
                    try {
                        extcomm = new TransitiveIPv4AddressTwoByteAdministratorRT(
                                (Inet4Address) InetAddresses
                                        .fromLittleEndianByteArray(buffer.readBytes(4).array()),
                                (int) buffer.readShort());
                    } catch (UnknownHostException e) {
                        ByteBuf data = Unpooled.buffer();
                        data.getByte(ipv4LowerType.toCode());
                        data.readBytes(buffer.readBytes(6));
                        extcomm = new UnknownTransitiveExtendedCommunity(transCommType, data.array());
                    }
                    break;

                default:

                    // all non-RT types are currently unimplemented
                    extcomm = new UnknownTransitiveIPv4AddressSpecificExtendedCommunity(transCommType,
                            ipv4LowerType, buffer.readBytes(6).array());
                    break;

                }
                break;

            default:
                // by default, just create an unknown type, reading the subsequent
                // 7 bytes (we have already read byte 1)
                extcomm = new UnknownTransitiveExtendedCommunity(transCommType, buffer.readBytes(7).array());
            }
        } else {
            // bit 7 is set, these are non-transitive
            NonTransitiveExtendedCommunityType nonTransCommType = NonTransitiveExtendedCommunityType
                    .fromCode((byte) (higherType & (~(3 << 6))));
            // all non-transitive types are currently unimplemented
            extcomm = new UnknownNonTransitiveExtendedCommunity(nonTransCommType, buffer.readBytes(7).array());
        }
        attr.getMembers().add(extcomm);
    }
    return attr;
}

---

From source file:io.nodyn.http.HTTPParser.java

License:Apache License

protected boolean readVersion(ByteBuf versionBuf) {
    int dotLoc = versionBuf.indexOf(versionBuf.readerIndex(),
            versionBuf.readerIndex() + versionBuf.readableBytes(), (byte) '.');
    if (dotLoc < 0) {
        return false;
    }/*from   w w  w  . jav a 2 s.  c o  m*/

    char majorChar = (char) versionBuf.getByte(dotLoc - 1);
    char minorChar = (char) versionBuf.getByte(dotLoc + 1);
    try {
        this.versionMajor = Integer.parseInt("" + majorChar);
        this.versionMinor = Integer.parseInt("" + minorChar);
    } catch (NumberFormatException e) {
        return false;
    }
    return true;
}

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