Example usage for io.netty.buffer ByteBuf readUnsignedByte

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

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Introduction

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

Prototype

public abstract short readUnsignedByte();

Source Link

Document

Gets an unsigned byte at the current readerIndex and increases the readerIndex by 1 in this buffer.

Usage

From source file:org.opendaylight.protocol.rsvp.parser.spi.subobjects.XROSubobjectListParser.java

License:Open Source License

public List<SubobjectContainer> parseList(final ByteBuf byteBuf) throws RSVPParsingException {
    final List<SubobjectContainer> subs = new ArrayList<>();
    while (byteBuf.isReadable()) {
        final boolean mandatory = ((byteBuf.getUnsignedByte(byteBuf.readerIndex())
                & (1 << Values.FIRST_BIT_OFFSET)) != 0) ? true : false;
        final int type = UnsignedBytes.checkedCast(
                (byteBuf.readUnsignedByte() & Values.BYTE_MAX_VALUE_BYTES) & ~(1 << Values.FIRST_BIT_OFFSET));
        final int length = byteBuf.readUnsignedByte() - HEADER_LENGHT;
        if (length > byteBuf.readableBytes()) {
            throw new RSVPParsingException(
                    "Wrong length specified. Passed: " + length + "; Expected: <= " + byteBuf.readableBytes());
        }//  www  . jav a 2s. com
        LOG.debug("Attempt to parse subobject from bytes: {}", ByteBufUtil.hexDump(byteBuf));
        final SubobjectContainer sub = this.subobjReg.parseSubobject(type, byteBuf.readSlice(length),
                mandatory);

        if (sub == null) {
            LOG.warn("Unknown subobject type: {}. Ignoring subobject.", type);
        } else {
            LOG.debug("Subobject was parsed. {}", sub);
            subs.add(sub);
        }
    }
    return subs;
}

From source file:org.spongepowered.common.mixin.core.status.MixinPingResponseHandler.java

License:MIT License

private boolean readLegacy(ChannelHandlerContext ctx, ByteBuf buf) {
    if (buf.readUnsignedByte() != 0xFE) {
        return false;
    }//from w ww .j ava2  s . c  om

    MinecraftServer server = this.networkSystem.getServer();
    InetSocketAddress client = (InetSocketAddress) ctx.channel().remoteAddress();
    ServerStatusResponse response;

    int i = buf.readableBytes();
    switch (i) {
    case 0:
        logger.debug("Ping: (<=1.3) from {}:{}", client.getAddress(), client.getPort());

        response = SpongeStatusResponse.postLegacy(server, client, SpongeLegacyMinecraftVersion.V1_3, null);
        if (response != null) {
            this.writeResponse(ctx,
                    String.format("%s%d%d", SpongeStatusResponse.getUnformattedMotd(response),
                            response.getPlayerCountData().getOnlinePlayerCount(),
                            response.getPlayerCountData().getMaxPlayers()));
        } else {
            ctx.close();
        }

        break;
    case 1:
        if (buf.readUnsignedByte() != 0x01) {
            return false;
        }

        logger.debug("Ping: (1.4-1.5) from {}:{}", client.getAddress(), client.getPort());

        response = SpongeStatusResponse.postLegacy(server, client, SpongeLegacyMinecraftVersion.V1_5, null);
        if (response != null) {
            this.writeResponse(ctx,
                    String.format("1\u0000%d\u0000%s\u0000%s\u0000%d\u0000%d",
                            response.getProtocolVersionInfo().getProtocol(),
                            response.getProtocolVersionInfo().getName(), SpongeStatusResponse.getMotd(response),
                            response.getPlayerCountData().getOnlinePlayerCount(),
                            response.getPlayerCountData().getMaxPlayers()));
        } else {
            ctx.close();
        }

        break;
    default:
        if (buf.readUnsignedByte() != 0x01 || buf.readUnsignedByte() != 0xFA) {
            return false;
        }
        if (!buf.isReadable(2)) {
            break;
        }
        short length = buf.readShort();
        if (!buf.isReadable(length * 2)) {
            break;
        }
        if (!buf.readBytes(length * 2).toString(Charsets.UTF_16BE).equals("MC|PingHost")) {
            return false;
        }
        if (!buf.isReadable(2)) {
            break;
        }
        length = buf.readShort();
        if (!buf.isReadable(length)) {
            break;
        }

        int protocol = buf.readUnsignedByte();
        length = buf.readShort();
        String host = buf.readBytes(length * 2).toString(Charsets.UTF_16BE);
        int port = buf.readInt();

        logger.debug("Ping: (1.6) from {}:{}", client.getAddress(), client.getPort());

        response = SpongeStatusResponse.postLegacy(server, client,
                new SpongeLegacyMinecraftVersion(SpongeLegacyMinecraftVersion.V1_6, protocol),
                InetSocketAddress.createUnresolved(host, port));
        if (response != null) {
            this.writeResponse(ctx,
                    String.format("1\u0000%d\u0000%s\u0000%s\u0000%d\u0000%d",
                            response.getProtocolVersionInfo().getProtocol(),
                            response.getProtocolVersionInfo().getName(), SpongeStatusResponse.getMotd(response),
                            response.getPlayerCountData().getOnlinePlayerCount(),
                            response.getPlayerCountData().getMaxPlayers()));
        } else {
            ctx.close();
        }

        break;
    }

    return true;
}

From source file:org.spongepowered.granite.mixin.status.MixinPingResponseHandler.java

License:MIT License

private boolean readLegacy(ChannelHandlerContext ctx, ByteBuf buf) {
    if (buf.readUnsignedByte() != 0xFE) {
        return false;
    }/*from w  ww  . j  a v a2  s . co  m*/

    MinecraftServer server = this.networkSystem.getServer();
    InetSocketAddress client = (InetSocketAddress) ctx.channel().remoteAddress();
    ServerStatusResponse response;

    int i = buf.readableBytes();
    switch (i) {
    case 0:
        logger.debug("Ping: (<=1.3) from {}:{}", client.getAddress(), client.getPort());

        response = GraniteStatusResponse.postLegacy(server, client, GraniteLegacyMinecraftVersion.V1_3, null);
        if (response != null) {
            this.writeResponse(ctx,
                    String.format("%s%d%d", GraniteStatusResponse.getUnformattedMotd(response),
                            response.getPlayerCountData().getOnlinePlayerCount(),
                            response.getPlayerCountData().getMaxPlayers()));
        } else {
            ctx.close();
        }

        break;
    case 1:
        if (buf.readUnsignedByte() != 0x01) {
            return false;
        }

        logger.debug("Ping: (1.4-1.5) from {}:{}", client.getAddress(), client.getPort());

        response = GraniteStatusResponse.postLegacy(server, client, GraniteLegacyMinecraftVersion.V1_5, null);
        if (response != null) {
            this.writeResponse(ctx, String.format("1\u0000%d\u0000%s\u0000%s\u0000%d\u0000%d",
                    response.getProtocolVersionInfo().getProtocol(),
                    response.getProtocolVersionInfo().getName(), GraniteStatusResponse.getMotd(response),
                    response.getPlayerCountData().getOnlinePlayerCount(),
                    response.getPlayerCountData().getMaxPlayers()));
        } else {
            ctx.close();
        }

        break;
    default:
        if (buf.readUnsignedByte() != 0x01 || buf.readUnsignedByte() != 0xFA) {
            return false;
        }
        if (!buf.isReadable(2)) {
            break;
        }
        short length = buf.readShort();
        if (!buf.isReadable(length * 2)) {
            break;
        }
        if (!buf.readBytes(length * 2).toString(Charsets.UTF_16BE).equals("MC|PingHost")) {
            return false;
        }
        if (!buf.isReadable(2)) {
            break;
        }
        length = buf.readShort();
        if (!buf.isReadable(length)) {
            break;
        }

        int protocol = buf.readUnsignedByte();
        length = buf.readShort();
        String host = buf.readBytes(length * 2).toString(Charsets.UTF_16BE);
        int port = buf.readInt();

        logger.debug("Ping: (1.6) from {}:{}", client.getAddress(), client.getPort());

        response = GraniteStatusResponse.postLegacy(server, client,
                new GraniteLegacyMinecraftVersion(GraniteLegacyMinecraftVersion.V1_6, protocol),
                InetSocketAddress.createUnresolved(host, port));
        if (response != null) {
            this.writeResponse(ctx, String.format("1\u0000%d\u0000%s\u0000%s\u0000%d\u0000%d",
                    response.getProtocolVersionInfo().getProtocol(),
                    response.getProtocolVersionInfo().getName(), GraniteStatusResponse.getMotd(response),
                    response.getPlayerCountData().getOnlinePlayerCount(),
                    response.getPlayerCountData().getMaxPlayers()));
        } else {
            ctx.close();
        }

        break;
    }

    return true;
}

From source file:org.spout.api.util.ByteBufUtils.java

License:Open Source License

/**
 * Reads a list of parameters from the buffer.
 *
 * @param buf The buffer.//from  w w w  .j a  va 2  s.com
 * @return The parameters.
 */
public static List<Parameter<?>> readParameters(ByteBuf buf) throws IOException {
    List<Parameter<?>> parameters = new ArrayList<>();

    for (int b = buf.readUnsignedByte(); b != 127; b = buf.readUnsignedByte()) {
        int type = (b & 0xE0) >> 5;
        int index = b & 0x1F;

        switch (type) {
        case Parameter.TYPE_BYTE:
            parameters.add(new Parameter<>(type, index, buf.readByte()));
            break;
        case Parameter.TYPE_SHORT:
            parameters.add(new Parameter<>(type, index, buf.readShort()));
            break;
        case Parameter.TYPE_INT:
            parameters.add(new Parameter<>(type, index, buf.readInt()));
            break;
        case Parameter.TYPE_FLOAT:
            parameters.add(new Parameter<>(type, index, buf.readFloat()));
            break;
        case Parameter.TYPE_STRING:
            parameters.add(new Parameter<>(type, index, readString(buf)));
            break;
        case Parameter.TYPE_ITEM:
            short id = buf.readShort();
            int count = buf.readByte();
            short data = buf.readShort();
            ItemStack item = new ItemStack(Material.get(id), data, count);
            parameters.add(new Parameter<>(type, index, item));
            break;
        }
    }

    return parameters;
}

From source file:org.spout.vanilla.protocol.codec.entity.EntityActionCodec.java

License:Open Source License

@Override
public EntityActionMessage decode(ByteBuf buffer) throws IOException {
    int id = buffer.readInt();
    int action = buffer.readUnsignedByte();
    int jumpBoost = buffer.readInt();
    return new EntityActionMessage(id, action, jumpBoost);
}

From source file:org.spout.vanilla.protocol.codec.entity.pos.EntityHeadYawCodec.java

License:Open Source License

@Override
public EntityHeadYawMessage decode(ByteBuf buffer) throws IOException {
    int id = buffer.readInt();
    int headYaw = buffer.readUnsignedByte();
    return new EntityHeadYawMessage(id, headYaw);
}

From source file:org.spout.vanilla.protocol.codec.entity.pos.EntityRelativePositionYawCodec.java

License:Open Source License

@Override
public EntityRelativePositionYawMessage decode(ByteBuf buffer) throws IOException {
    int id = buffer.readInt();
    int dx = buffer.readByte();
    int dy = buffer.readByte();
    int dz = buffer.readByte();
    int rotation = buffer.readUnsignedByte();
    int pitch = buffer.readUnsignedByte();
    return new EntityRelativePositionYawMessage(id, dx, dy, dz, rotation, pitch);
}

From source file:org.spout.vanilla.protocol.codec.entity.pos.EntityTeleportCodec.java

License:Open Source License

@Override
public EntityTeleportMessage decode(ByteBuf buffer) throws IOException {
    int id = buffer.readInt();
    int x = buffer.readInt();
    int y = buffer.readInt();
    int z = buffer.readInt();
    int rotation = buffer.readUnsignedByte();
    int pitch = buffer.readUnsignedByte();
    return new EntityTeleportMessage(id, x, y, z, rotation, pitch);
}

From source file:org.spout.vanilla.protocol.codec.entity.pos.EntityYawCodec.java

License:Open Source License

@Override
public EntityYawMessage decode(ByteBuf buffer) throws IOException {
    int id = buffer.readInt();
    int rotation = buffer.readUnsignedByte();
    int pitch = buffer.readUnsignedByte();
    return new EntityYawMessage(id, rotation, pitch);
}

From source file:org.spout.vanilla.protocol.codec.entity.spawn.EntityMobCodec.java

License:Open Source License

@Override
public EntityMobMessage decode(ByteBuf buffer) throws IOException {
    int id = buffer.readInt();
    int type = buffer.readUnsignedByte();
    int x = buffer.readInt();
    int y = buffer.readInt();
    int z = buffer.readInt();
    int yaw = buffer.readUnsignedByte();
    int pitch = buffer.readUnsignedByte();
    int headYaw = buffer.readUnsignedByte();
    short velocityZ = buffer.readShort();
    short velocityX = buffer.readShort();
    short velocityY = buffer.readShort();
    List<Parameter<?>> parameters = VanillaByteBufUtils.readParameters(buffer);
    return new EntityMobMessage(id, type, x, y, z, yaw, pitch, headYaw, velocityZ, velocityX, velocityY,
            parameters, NullRepositionManager.getInstance());
}