diff options
Diffstat (limited to 'src/org/traccar/protocol')
| -rw-r--r-- | src/org/traccar/protocol/OrionFrameDecoder.java | 52 | ||||
| -rw-r--r-- | src/org/traccar/protocol/OrionProtocolDecoder.java | 225 |
2 files changed, 277 insertions, 0 deletions
diff --git a/src/org/traccar/protocol/OrionFrameDecoder.java b/src/org/traccar/protocol/OrionFrameDecoder.java new file mode 100644 index 000000000..92236225b --- /dev/null +++ b/src/org/traccar/protocol/OrionFrameDecoder.java @@ -0,0 +1,52 @@ +/* + * Copyright 2014 Anton Tananaev (anton.tananaev@gmail.com) + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.traccar.protocol; + +import org.jboss.netty.buffer.ChannelBuffer; +import org.jboss.netty.channel.Channel; +import org.jboss.netty.channel.ChannelHandlerContext; +import org.jboss.netty.handler.codec.frame.FrameDecoder; + +public class OrionFrameDecoder extends FrameDecoder { + + @Override + protected Object decode( + ChannelHandlerContext ctx, + Channel channel, + ChannelBuffer buf) throws Exception { + + // Check minimum length + if (buf.readableBytes() < 5) { + return null; + } + + int length = 2 + 2; // head and tail + + if (buf.getByte(buf.readerIndex()) == 0x78) { + length += 1 + buf.getByte(buf.readerIndex() + 2); + } else { + length += 2 + buf.getShort(buf.readerIndex() + 2); + } + + // Check length and return buffer + if (buf.readableBytes() >= length) { + return buf.readBytes(length); + } + + return null; + } + +} diff --git a/src/org/traccar/protocol/OrionProtocolDecoder.java b/src/org/traccar/protocol/OrionProtocolDecoder.java new file mode 100644 index 000000000..f321380eb --- /dev/null +++ b/src/org/traccar/protocol/OrionProtocolDecoder.java @@ -0,0 +1,225 @@ +/* + * Copyright 2014 Anton Tananaev (anton.tananaev@gmail.com) + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.traccar.protocol; + +import java.util.Calendar; +import java.util.TimeZone; +import org.jboss.netty.buffer.ChannelBuffer; +import org.jboss.netty.buffer.ChannelBuffers; +import org.jboss.netty.channel.Channel; +import org.jboss.netty.channel.ChannelHandlerContext; +import org.traccar.BaseProtocolDecoder; +import org.traccar.ServerManager; +import org.traccar.helper.Crc; +import org.traccar.helper.Log; +import org.traccar.model.ExtendedInfoFormatter; +import org.traccar.model.Position; + +public class OrionProtocolDecoder extends BaseProtocolDecoder { + + private Long deviceId; + private final TimeZone timeZone = TimeZone.getTimeZone("UTC"); + + public OrionProtocolDecoder(ServerManager serverManager) { + super(serverManager); + } + + private String readImei(ChannelBuffer buf) { + int b = buf.readUnsignedByte(); + StringBuilder imei = new StringBuilder(); + imei.append(b & 0x0F); + for (int i = 0; i < 7; i++) { + b = buf.readUnsignedByte(); + imei.append((b & 0xF0) >> 4); + imei.append(b & 0x0F); + } + return imei.toString(); + } + + private static final int MSG_LOGIN = 0x01; + private static final int MSG_GPS = 0x10; + private static final int MSG_LBS = 0x11; + private static final int MSG_GPS_LBS = 0x12; + private static final int MSG_STATUS = 0x13; + private static final int MSG_SATELLITE = 0x14; + private static final int MSG_STRING = 0x15; + private static final int MSG_GPS_LBS_STATUS = 0x16; + private static final int MSG_LBS_PHONE = 0x17; + private static final int MSG_LBS_EXTEND = 0x18; + private static final int MSG_LBS_STATUS = 0x19; + private static final int MSG_GPS_PHONE = 0x1A; + private static final int MSG_GPS_LBS_EXTEND = 0x1E; + + private static void sendResponse(Channel channel, int type, int index) { + if (channel != null) { + ChannelBuffer response = ChannelBuffers.directBuffer(10); + response.writeByte(0x78); response.writeByte(0x78); // header + response.writeByte(0x05); // size + response.writeByte(type); + response.writeShort(index); + response.writeShort(Crc.crc16Ccitt(response.toByteBuffer(2, 4))); + response.writeByte(0x0D); response.writeByte(0x0A); // ending + channel.write(response); + } + } + + @Override + protected Object decode( + ChannelHandlerContext ctx, Channel channel, Object msg) + throws Exception { + + ChannelBuffer buf = (ChannelBuffer) msg; + + // Check header + if (buf.readByte() != 0x78 || buf.readByte() != 0x78) { + return null; + } + + int length = buf.readByte(); // size + int dataLength = length - 5; + + int type = buf.readUnsignedByte(); + + if (type == MSG_LOGIN) { + + String imei = readImei(buf); + buf.readUnsignedShort(); // type + + // Timezone offset + if (dataLength > 10) { + int extensionBits = buf.readUnsignedShort(); + int offset = (extensionBits >> 4) * 36000; + if ((extensionBits & 0x8) != 0) { + offset = -offset; + } + timeZone.setRawOffset(offset); + } + + try { + deviceId = getDataManager().getDeviceByImei(imei).getId(); + buf.skipBytes(dataLength - 8); + sendResponse(channel, type, buf.readUnsignedShort()); + } catch(Exception error) { + Log.warning("Unknown device - " + imei); + } + + } + + else if (deviceId != null && ( + type == MSG_GPS || + type == MSG_GPS_LBS || + type == MSG_GPS_LBS_STATUS || + type == MSG_GPS_PHONE || + type == MSG_GPS_LBS_EXTEND)) { + + // Create new position + Position position = new Position(); + position.setDeviceId(deviceId); + ExtendedInfoFormatter extendedInfo = new ExtendedInfoFormatter("gt06"); + + // Date and time + Calendar time = Calendar.getInstance(timeZone); + time.clear(); + time.set(Calendar.YEAR, 2000 + buf.readUnsignedByte()); + time.set(Calendar.MONTH, buf.readUnsignedByte() - 1); + time.set(Calendar.DAY_OF_MONTH, buf.readUnsignedByte()); + time.set(Calendar.HOUR_OF_DAY, buf.readUnsignedByte()); + time.set(Calendar.MINUTE, buf.readUnsignedByte()); + time.set(Calendar.SECOND, buf.readUnsignedByte()); + position.setTime(time.getTime()); + + // GPS length and Satellites count + int gpsLength = buf.readUnsignedByte(); + extendedInfo.set("satellites", gpsLength & 0xf); + gpsLength >>= 4; + + // Latitude + double latitude = buf.readUnsignedInt() / (60.0 * 30000.0); + + // Longitude + double longitude = buf.readUnsignedInt() / (60.0 * 30000.0); + + // Speed + position.setSpeed(buf.readUnsignedByte() * 0.539957); + + // Course and flags + int union = buf.readUnsignedShort(); + position.setCourse((double) (union & 0x03FF)); + position.setValid((union & 0x1000) != 0); + if ((union & 0x0400) == 0) latitude = -latitude; + if ((union & 0x0800) != 0) longitude = -longitude; + + position.setLatitude(latitude); + position.setLongitude(longitude); + position.setAltitude(0.0); + + if ((union & 0x4000) != 0) { + extendedInfo.set("acc", (union & 0x8000) != 0); + } + + buf.skipBytes(gpsLength - 12); // skip reserved + + if (type == MSG_GPS_LBS || type == MSG_GPS_LBS_STATUS) { + + int lbsLength = 0; + if (type == MSG_GPS_LBS_STATUS) { + lbsLength = buf.readUnsignedByte(); + } + + // Cell information + extendedInfo.set("mcc", buf.readUnsignedShort()); + extendedInfo.set("mnc", buf.readUnsignedByte()); + extendedInfo.set("lac", buf.readUnsignedShort()); + extendedInfo.set("cell", buf.readUnsignedShort() << 8 + buf.readUnsignedByte()); + buf.skipBytes(lbsLength - 9); + + // Status + if (type == MSG_GPS_LBS_STATUS) { + extendedInfo.set("alarm", true); + + int flags = buf.readUnsignedByte(); + extendedInfo.set("acc", (flags & 0x2) != 0); + // TODO parse other flags + + // Voltage + extendedInfo.set("power", buf.readUnsignedByte()); + + // GSM signal + extendedInfo.set("gsm", buf.readUnsignedByte()); + } + } + + // Index + if (buf.readableBytes() > 6) { + buf.skipBytes(buf.readableBytes() - 6); + } + int index = buf.readUnsignedShort(); + extendedInfo.set("index", index); + sendResponse(channel, type, index); + + position.setExtendedInfo(extendedInfo.toString()); + return position; + } + + else { + buf.skipBytes(dataLength); + sendResponse(channel, type, buf.readUnsignedShort()); + } + + return null; + } + +} |