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// // LFXMessage.java // LIFX//from w w w. ja v a2 s .c om // // Created by Jarrod Boyes on 24/03/14. // Copyright (c) 2014 LIFX Labs. All rights reserved. // package lifx.java.android.entities.internal; import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; import lifx.java.android.entities.internal.LFXBinaryTargetID.LFXBinaryTargetType; import lifx.java.android.entities.internal.LFXBinaryTargetID.TagField; import lifx.java.android.entities.internal.structle.LxProtocol; import lifx.java.android.entities.internal.structle.LxProtocol.Type; import lifx.java.android.entities.internal.structle.StructleTypes; import lifx.java.android.entities.internal.structle.StructleTypes.LxProtocolTypeBase; import lifx.java.android.entities.internal.structle.StructleTypes.UInt64; import lifx.java.android.util.LFXByteUtils; import lifx.java.android.util.LFXLog; public class LFXMessage { private static final String PAYLOAD_SIZE_METHOD_NAME = "getPayloadSize"; private static final short ADDRESSABLE_BIT = 0x1000; private static final short TAGGED_BIT = 0x2000; private static final int PROTOCOL_VERSION_BITS = 0x0FFF; //private static final short ACKNOWLEDGEMENT_BIT = 0x0001; private static final int LX_PROTOCOL_V1 = 1024; private static final int CURRENT_PROTOCOL = LX_PROTOCOL_V1; private static final int BASE_MESSAGE_SIZE = 36; private static final int PAYLOAD_START_INDEX = 36; enum LFXMessageDirection { INCOMING, OUTGOING, }; private long timestamp; // When the message was received (incoming) or created (outgoing) private LFXMessageDirection messageDirection; // incoming/outgoing private LFXGatewayDescriptor gatewayDescriptor; // will be set by the message router when sent/received // Network host (this will be set by the Message Router to be the host of the receiving // network connection). For outgoing messages, this will be nil. private String sourceNetworkHost; private Type messageType; // For outgoing messages private LFXTarget target; // LIFX Protocol Header Properties private int size; private int protocol; private LFXBinaryPath path; private long atTime; private LxProtocolTypeBase payload; // Non-protocol messages @SuppressWarnings( "unused") private boolean isNonProtocolMessage = false; @SuppressWarnings( "unused") private byte[] rawData; // Routing Preferences private boolean prefersUDPOverTCP = false; private static boolean messageIsAddressable( byte[] data) { boolean addressable = false; short protocol = StructleTypes.getShortValue( data[2], data[3]); if( (protocol & ADDRESSABLE_BIT) != 0) { addressable = true; } else { addressable = false; } return addressable; } private static int getProtocolFromMessageData( byte[] data) { short protocol = StructleTypes.getShortValue( data[2], data[3]); int protocolVersion = (protocol & PROTOCOL_VERSION_BITS); return protocolVersion; } public static int getSizeFromMessageData( byte[] data) { int size = StructleTypes.getShortValue( data[0] , data[1]); return size; } private static long getAtTimeFromMessageData( byte[] data) { byte[] atTimeArray = new byte[8]; atTimeArray[0] = data[24]; atTimeArray[1] = data[25]; atTimeArray[2] = data[26]; atTimeArray[3] = data[27]; atTimeArray[4] = data[28]; atTimeArray[5] = data[29]; atTimeArray[6] = data[30]; atTimeArray[7] = data[31]; return StructleTypes.getLongValue( atTimeArray[0], atTimeArray[1], atTimeArray[2], atTimeArray[3], atTimeArray[4], atTimeArray[5], atTimeArray[6], atTimeArray[7]); } private static byte[] getSiteIDFromMessageData( byte[] data) { byte[] siteIdArray = new byte[6]; siteIdArray[0] = data[16]; siteIdArray[1] = data[17]; siteIdArray[2] = data[18]; siteIdArray[3] = data[19]; siteIdArray[4] = data[20]; siteIdArray[5] = data[21]; return siteIdArray; } private static byte[] getTargetFromMessageData( byte[] data) { boolean tagged = getIsTaggedFromMessageData( data); byte[] targetByteArray = null; if( tagged) { targetByteArray = new byte[8]; targetByteArray[0] = data[8]; targetByteArray[1] = data[9]; targetByteArray[2] = data[10]; targetByteArray[3] = data[11]; targetByteArray[4] = data[12]; targetByteArray[5] = data[13]; targetByteArray[6] = data[14]; targetByteArray[7] = data[15]; } else { targetByteArray = new byte[6]; targetByteArray[0] = data[8]; targetByteArray[1] = data[9]; targetByteArray[2] = data[10]; targetByteArray[3] = data[11]; targetByteArray[4] = data[12]; targetByteArray[5] = data[13]; } return targetByteArray; } private static boolean getIsTaggedFromMessageData( byte[] data) { short protocol = StructleTypes.getShortValue( data[2], data[3]); boolean tagged = false; if( (protocol & TAGGED_BIT) != 0) { tagged = true; } else { tagged = false; } return tagged; } private static Type getTypeFromMessageData( byte[] data) { short type = StructleTypes.getShortValue( data[32], data[33]); return LxProtocol.typeMap.get( (int)type); } private static LxProtocolTypeBase getPayloadFromMessageData( byte[] data) { LxProtocol.Type messageType = getTypeFromMessageData( data); Class<? extends LxProtocolTypeBase> messagePayloadClass = LxProtocol.typeClassMap.get( messageType); LxProtocolTypeBase payload = null; try { payload = messagePayloadClass.getDeclaredConstructor( new Class[]{ byte[].class, int.class}).newInstance( data, PAYLOAD_START_INDEX); } catch (InstantiationException e) { e.printStackTrace(); } catch (IllegalAccessException e) { e.printStackTrace(); } catch (IllegalArgumentException e) { e.printStackTrace(); } catch (InvocationTargetException e) { e.printStackTrace(); } catch (NoSuchMethodException e) { e.printStackTrace(); } return payload; } public static LFXMessage messageWithMessageData( byte [] data) { if( data == null || data.length == 0) { return null; } byte[] bytes = new byte[data.length]; LFXByteUtils.copyBytesIntoByteArray( bytes, data); if( !messageIsAddressable( bytes)) { // We don't know how to deal with non-addressable messages, but the bulbs are sometimes not setting this flag correctly LFXLog.warn( "Warning: Message claims to be non-addressable: " + data); return null; } int protocol = getProtocolFromMessageData( bytes); if( protocol != CURRENT_PROTOCOL) { LFXLog.warn( "Handling non-protocol message of protocol " + protocol); return LFXMessage.initWithNonProtocolMessageData( data); } return LFXMessage.initWithMessageData( data); //[[class alloc] initWithMessageData:data]; } private static LFXMessage initWithMessageData( byte[] data) { Type messageType = getTypeFromMessageData( data); LFXMessage message = new LFXMessage( messageType); message.timestamp = System.currentTimeMillis(); message.messageDirection = LFXMessageDirection.INCOMING; byte[] bytes = new byte[data.length]; LFXByteUtils.copyBytesIntoByteArray( bytes, data); message.size = getSizeFromMessageData( bytes); message.protocol = getProtocolFromMessageData( bytes); message.atTime = getAtTimeFromMessageData( bytes); message.messageType = getTypeFromMessageData( bytes); LFXSiteID site = LFXSiteID.getSiteIDWithData( getSiteIDFromMessageData( bytes)); LFXBinaryTargetID target = null; if( getIsTaggedFromMessageData( bytes)) { TagField tagField = new TagField(); tagField.tagData = getTargetFromMessageData( bytes); target = LFXBinaryTargetID.getGroupTargetIDWithTagField( tagField); } else { target = LFXBinaryTargetID.getDeviceTargetIDWithData( getTargetFromMessageData( bytes)); } message.path = LFXBinaryPath.getPathWithSiteIDAndTargetID( site, target); message.payload = getPayloadFromMessageData( bytes); message.rawData = data; return message; } private static LFXMessage initWithNonProtocolMessageData( byte[] data) { Type type = getTypeFromMessageData( data); LFXMessage message = new LFXMessage( type); message.timestamp = System.currentTimeMillis(); message.messageDirection = LFXMessageDirection.INCOMING; byte[] bytes = new byte[data.length]; LFXByteUtils.copyBytesIntoByteArray( bytes, data); message.size = getSizeFromMessageData( data); message.protocol = getProtocolFromMessageData( data); message.messageType = getTypeFromMessageData( data); LFXSiteID site = LFXSiteID.getSiteIDWithData( getSiteIDFromMessageData( data)); LFXBinaryTargetID target = null; if( getIsTaggedFromMessageData( bytes)) { TagField tagField = new TagField(); tagField.tagData = getTargetFromMessageData( bytes); target = LFXBinaryTargetID.getGroupTargetIDWithTagField( tagField); } else { target = LFXBinaryTargetID.getDeviceTargetIDWithData( getTargetFromMessageData( bytes)); } message.path = LFXBinaryPath.getPathWithSiteIDAndTargetID( site, target); message.rawData = data; message.isNonProtocolMessage = true; return message; } private LFXMessage( Type messageType) { this.messageType = messageType; } private static LFXMessage init( Type messageType) // for outgoing messages { LFXMessage message = new LFXMessage( messageType); message.timestamp = System.currentTimeMillis(); message.messageDirection = LFXMessageDirection.OUTGOING; message.protocol = CURRENT_PROTOCOL; message.path = LFXBinaryPath.getPathWithSiteIDAndTargetID( LFXSiteID.getZeroSiteID(), LFXBinaryTargetID.getBroadcastTargetID()); message.payload = null; message.messageType = messageType; return message; } private int getMessageDataRepresentationLength() { int prePayloadLength = BASE_MESSAGE_SIZE; Class<? extends LxProtocolTypeBase> payloadClass = LxProtocol.typeClassMap.get( messageType); int payloadLength = 0; try { Method method = payloadClass.getMethod( PAYLOAD_SIZE_METHOD_NAME); Object o = method.invoke( null); if( o != null) { payloadLength = (Integer) o; } } catch( IllegalAccessException e) { e.printStackTrace(); } catch( IllegalArgumentException e) { e.printStackTrace(); } catch( NoSuchMethodException e) { e.printStackTrace(); } catch( InvocationTargetException e) { e.printStackTrace(); } return (payloadLength + prePayloadLength); } private static void writeSizeToMessage( short size, byte[] data) { data[0] = (byte)(size & 0xff); data[1] = (byte)((size >> 8) & 0xff); } private static void writeProtocolToMessage( short protocol, byte[] data) { short protocolField = StructleTypes.getShortValue( data[2], data[3]); short version = (short) (protocol & PROTOCOL_VERSION_BITS); protocolField = (short) (protocolField | version); data[2] = (byte)(protocolField & 0xff); data[3] = (byte)((protocolField >> 8) & 0xff); } private static void writeIsAddressableToMessage( boolean isAddressable, byte[] data) { short protocolField = StructleTypes.getShortValue( data[2], data[3]); if( isAddressable) { protocolField = (short) (protocolField | ADDRESSABLE_BIT); } data[2] = (byte)(protocolField & 0xff); data[3] = (byte)((protocolField >> 8) & 0xff); } private static void writeAtTimeToMessage( long atTime, byte[] data) { UInt64 wrappedAtTime = new UInt64( atTime); byte[] atTimeBytes = wrappedAtTime.getBytes(); data[24] = atTimeBytes[0]; data[25] = atTimeBytes[1]; data[26] = atTimeBytes[2]; data[27] = atTimeBytes[3]; data[28] = atTimeBytes[4]; data[29] = atTimeBytes[5]; data[30] = atTimeBytes[6]; data[31] = atTimeBytes[7]; } private static void writeTypeToMessage( Type type, byte[] data) { int typeValue = LxProtocol.typeValueMap.get( type); short typeValueShort = (short) typeValue; data[32] = (byte) (typeValueShort & 0xff); data[33] = (byte) ((typeValueShort >> 8) & 0xff); } private static void writeSiteIDToMessage( byte[] siteID, byte[] data) { int siteOffsetIndex = 16; for( int i = 0; i < siteID.length; i++) { data[siteOffsetIndex + i] = siteID[i]; } } private static void writeTargetIDtoMessage( byte[] targetID, byte[] data) { int targetOffsetIndex = 8; for( int i = 0; i < targetID.length; i++) { data[targetOffsetIndex + i] = targetID[i]; } } private static void writeIsTaggedToMessage( boolean tagged, byte[] data) { short protocolField = StructleTypes.getShortValue( data[2], data[3]); if( tagged) { protocolField = (short) (protocolField | TAGGED_BIT); } data[2] = (byte)(protocolField & 0xff); data[3] = (byte)((protocolField >> 8) & 0xff); } public byte[] getMessageDataRepresentation() { byte[] data = null; if( payload != null) { data = new byte[getMessageDataRepresentationLength()]; } else { data = new byte[BASE_MESSAGE_SIZE]; } writeSizeToMessage( (short) data.length, data); writeProtocolToMessage( (short) protocol, data); writeIsAddressableToMessage( true, data); writeAtTimeToMessage( atTime, data); writeTypeToMessage( messageType, data); writeSiteIDToMessage( path.getSiteID().getDataValue(), data); if( path.getBinaryTargetID().geTargetType() == LFXBinaryTargetType.DEVICE) { writeTargetIDtoMessage( path.getBinaryTargetID().getDeviceDataValue(), data); writeIsTaggedToMessage( false, data); } else { writeTargetIDtoMessage( path.getBinaryTargetID().getGroupTagField().tagData, data); writeIsTaggedToMessage( true, data); } if( payload != null) { byte[] payloadData = payload.getBytes(); LFXByteUtils.copyBytesIntoByteArrayAtOffset( data, payloadData, PAYLOAD_START_INDEX); } return data; } public static LFXMessage messageWithType( Type type) { LFXMessage message = LFXMessage.init( type); return message; } public static LFXMessage messageWithTypeAndTarget( Type type, LFXTarget target) { LFXMessage message = LFXMessage.init( type); message.target = target; return message; } public static LFXMessage messageWithTypeAndPath( Type type, LFXBinaryPath path) { LFXMessage message = LFXMessage.init( type); message.path = path; return message; } public long getTimestamp() { return timestamp; } public Type getType() { return messageType; } public boolean isAResponseMessage() { if( getType() == Type.LX_PROTOCOL_DEVICE_STATE_DUMMY_LOAD || getType() == Type.LX_PROTOCOL_DEVICE_STATE_INFO || getType() == Type.LX_PROTOCOL_DEVICE_STATE_LABEL || getType() == Type.LX_PROTOCOL_DEVICE_STATE_MCU_RAIL_VOLTAGE || getType() == Type.LX_PROTOCOL_DEVICE_STATE_MESH_FIRMWARE || getType() == Type.LX_PROTOCOL_DEVICE_STATE_MESH_INFO || getType() == Type.LX_PROTOCOL_DEVICE_STATE_PAN_GATEWAY || getType() == Type.LX_PROTOCOL_DEVICE_STATE_POWER || getType() == Type.LX_PROTOCOL_DEVICE_STATE_RESET_SWITCH || getType() == Type.LX_PROTOCOL_DEVICE_STATE_TAG_LABELS || getType() == Type.LX_PROTOCOL_DEVICE_STATE_TAGS || getType() == Type.LX_PROTOCOL_DEVICE_STATE_TIME || getType() == Type.LX_PROTOCOL_DEVICE_STATE_VERSION || getType() == Type.LX_PROTOCOL_DEVICE_STATE_WIFI_FIRMWARE || getType() == Type.LX_PROTOCOL_DEVICE_STATE_WIFI_INFO || getType() == Type.LX_PROTOCOL_LIGHT_STATE || getType() == Type.LX_PROTOCOL_LIGHT_STATE_RAIL_VOLTAGE || getType() == Type.LX_PROTOCOL_LIGHT_STATE_TEMPERATURE) { return true; } return false; } public Object clone() { LFXMessage message = new LFXMessage( this.messageType); message.timestamp = this.timestamp; message.messageDirection = this.messageDirection; message.gatewayDescriptor = this.gatewayDescriptor; message.sourceNetworkHost = this.sourceNetworkHost; message.size = this.size; message.protocol = this.protocol; message.path = this.path; message.target = this.target; message.atTime = this.atTime; message.payload = this.payload; message.messageType = this.messageType; return message; } public void setPayload( LxProtocolTypeBase payload) { this.payload = payload; } public LxProtocolTypeBase getPayload() { return payload; } public LFXBinaryPath getPath() { return path; } public void setPath( LFXBinaryPath path) { this.path = path; } public LFXTarget getTarget() { return target; } public LFXGatewayDescriptor getGatewayDescriptor() { return gatewayDescriptor; } public void setGatewayDescriptor( LFXGatewayDescriptor gatewayDescriptor) { this.gatewayDescriptor = gatewayDescriptor; } public String getSourceNetworkHost() { return sourceNetworkHost; } public void setSourceNetworkHost( String sourceNetworkHost) { this.sourceNetworkHost = sourceNetworkHost; } public boolean prefersUDPOverTCP() { return prefersUDPOverTCP; } public void setPrefersUDPOverTCP( boolean prefersUDPOverTCP) { this.prefersUDPOverTCP = prefersUDPOverTCP; } }