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-rw-r--r--src/org/traccar/helper/Checksum.java8
-rw-r--r--src/org/traccar/protocol/Arnavi4FrameDecoder.java74
-rw-r--r--src/org/traccar/protocol/Arnavi4Protocol.java45
-rw-r--r--src/org/traccar/protocol/Arnavi4ProtocolDecoder.java182
4 files changed, 309 insertions, 0 deletions
diff --git a/src/org/traccar/helper/Checksum.java b/src/org/traccar/helper/Checksum.java
index 43ba6a689..44cef9635 100644
--- a/src/org/traccar/helper/Checksum.java
+++ b/src/org/traccar/helper/Checksum.java
@@ -243,4 +243,12 @@ public final class Checksum {
return (10 - (checksum % 10)) % 10;
}
+ public static int modulo256(byte[] bytes) {
+ int sum = 0;
+ for (byte b : bytes) {
+ sum = (sum + b) & 0xFF;
+ }
+ return sum;
+ }
+
}
diff --git a/src/org/traccar/protocol/Arnavi4FrameDecoder.java b/src/org/traccar/protocol/Arnavi4FrameDecoder.java
new file mode 100644
index 000000000..b13f3fd7d
--- /dev/null
+++ b/src/org/traccar/protocol/Arnavi4FrameDecoder.java
@@ -0,0 +1,74 @@
+/*
+ * Copyright 2017 Ivan Muratov (binakot@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 Arnavi4FrameDecoder extends FrameDecoder {
+
+ private static final int MIN_LENGTH = 4;
+ private static final int HEADER_LENGTH = 10;
+ private static final int PACKET_WRAPPER_LENGTH = 8;
+ private static final int COMMAND_ANSWER_PACKET_LENGTH = 4;
+ private static final int COMMAND_ANSWER_PARCEL_NUMBER = 0xfd;
+ private static final byte PACKAGE_END_SIGN = 0x5d;
+
+ private boolean firstPacket = true;
+
+ @Override
+ protected Object decode(
+ ChannelHandlerContext ctx, Channel channel, ChannelBuffer buf) throws Exception {
+
+ if (buf.readableBytes() < MIN_LENGTH) {
+ return null;
+ }
+
+ int length;
+ if (firstPacket) {
+ firstPacket = false;
+ length = HEADER_LENGTH;
+ } else {
+ int index = buf.getUnsignedByte(1); // parcel number
+ if (index == COMMAND_ANSWER_PARCEL_NUMBER) {
+ length = COMMAND_ANSWER_PACKET_LENGTH;
+ } else {
+ int pos = 2; // start sign + parcel number
+ while (pos + PACKET_WRAPPER_LENGTH < buf.readableBytes()
+ && buf.getByte(pos) != PACKAGE_END_SIGN) {
+
+ int dataLength = buf.getUnsignedShort(pos + 1);
+ pos += PACKET_WRAPPER_LENGTH + dataLength; // packet type + data length + unixtime + data + crc
+ }
+
+ if (buf.getByte(pos) != PACKAGE_END_SIGN) { // end sign
+ return null;
+ }
+
+ length = pos + 1;
+ }
+ }
+
+ if (buf.readableBytes() >= length) {
+ return buf.readBytes(length);
+ }
+
+ return null;
+ }
+
+}
diff --git a/src/org/traccar/protocol/Arnavi4Protocol.java b/src/org/traccar/protocol/Arnavi4Protocol.java
new file mode 100644
index 000000000..381a9b457
--- /dev/null
+++ b/src/org/traccar/protocol/Arnavi4Protocol.java
@@ -0,0 +1,45 @@
+/*
+ * Copyright 2017 Ivan Muratov (binakot@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.bootstrap.ServerBootstrap;
+import org.jboss.netty.channel.ChannelPipeline;
+import org.traccar.BaseProtocol;
+import org.traccar.TrackerServer;
+
+import java.nio.ByteOrder;
+import java.util.List;
+
+public class Arnavi4Protocol extends BaseProtocol {
+
+ public Arnavi4Protocol() {
+ super("arnavi4");
+ }
+
+ @Override
+ public void initTrackerServers(List<TrackerServer> serverList) {
+ TrackerServer server = new TrackerServer(new ServerBootstrap(), getName()) {
+ @Override
+ protected void addSpecificHandlers(ChannelPipeline pipeline) {
+ pipeline.addLast("frameDecoder", new Arnavi4FrameDecoder());
+ pipeline.addLast("objectDecoder", new Arnavi4ProtocolDecoder(Arnavi4Protocol.this));
+ }
+ };
+ server.setEndianness(ByteOrder.LITTLE_ENDIAN);
+ serverList.add(server);
+ }
+
+}
diff --git a/src/org/traccar/protocol/Arnavi4ProtocolDecoder.java b/src/org/traccar/protocol/Arnavi4ProtocolDecoder.java
new file mode 100644
index 000000000..06abb563f
--- /dev/null
+++ b/src/org/traccar/protocol/Arnavi4ProtocolDecoder.java
@@ -0,0 +1,182 @@
+/*
+ * Copyright 2017 Ivan Muratov (binakot@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.buffer.ChannelBuffers;
+import org.jboss.netty.channel.Channel;
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.DeviceSession;
+import org.traccar.helper.Checksum;
+import org.traccar.model.Position;
+
+import java.net.SocketAddress;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.util.Date;
+import java.util.LinkedList;
+import java.util.List;
+
+public class Arnavi4ProtocolDecoder extends BaseProtocolDecoder {
+
+ private static final byte HEADER_START_SIGN = (byte) 0xff;
+ private static final byte HEADER_VERSION_1 = 0x22;
+ private static final byte HEADER_VERSION_2 = 0x23;
+
+ private static final byte RECORD_PING = 0x00;
+ private static final byte RECORD_DATA = 0x01;
+ private static final byte RECORD_TEXT = 0x03;
+ private static final byte RECORD_FILE = 0x04;
+ private static final byte RECORD_BINARY = 0x06;
+
+ private static final byte TAG_LATITUDE = 3;
+ private static final byte TAG_LONGITUDE = 4;
+ private static final byte TAG_COORD_PARAMS = 5;
+
+ public Arnavi4ProtocolDecoder(Arnavi4Protocol protocol) {
+ super(protocol);
+ }
+
+ private void sendResponse(Channel channel, byte version, int index) {
+ if (channel != null) {
+ final ChannelBuffer response;
+ if (version == HEADER_VERSION_1) {
+ response = ChannelBuffers.dynamicBuffer(ByteOrder.LITTLE_ENDIAN, 4);
+ response.writeByte(0x7b);
+ response.writeByte(0x00);
+ response.writeByte((byte) index);
+ response.writeByte(0x7d);
+ } else if (version == HEADER_VERSION_2) {
+ response = ChannelBuffers.dynamicBuffer(ByteOrder.LITTLE_ENDIAN, 9);
+ response.writeByte(0x7b);
+ response.writeByte(0x04);
+ response.writeByte(0x00);
+ byte[] timeBytes = ByteBuffer.allocate(4).putInt((int) (System.currentTimeMillis() / 1000)).array();
+ response.writeByte(Checksum.modulo256(timeBytes));
+ response.writeBytes(timeBytes);
+ response.writeByte(0x7d);
+ } else {
+ return; // Ignore unsupported header's versions
+ }
+ channel.write(response);
+ }
+ }
+
+ private Position decodePosition(DeviceSession deviceSession, ChannelBuffer buf, int length, Date time) {
+
+ final Position position = new Position();
+ position.setProtocol(getProtocolName());
+ position.setDeviceId(deviceSession.getDeviceId());
+
+ position.setTime(time);
+
+ int readBytes = 0;
+ while (readBytes < length) {
+ short tag = buf.readUnsignedByte();
+ switch (tag) {
+ case TAG_LATITUDE:
+ position.setLatitude(buf.readFloat());
+ position.setValid(true);
+ break;
+
+ case TAG_LONGITUDE:
+ position.setLongitude(buf.readFloat());
+ position.setValid(true);
+ break;
+
+ case TAG_COORD_PARAMS:
+ position.setCourse(buf.readUnsignedByte() * 2);
+ position.setAltitude(buf.readUnsignedByte() * 10);
+ byte satellites = buf.readByte();
+ position.set(Position.KEY_SATELLITES, satellites & 0x0F + (satellites >> 4) & 0x0F); // gps+glonass
+ position.setSpeed(buf.readUnsignedByte());
+ break;
+
+ default:
+ buf.readBytes(4); // Skip unsupported tags
+ break;
+ }
+
+ readBytes += 5; // 1 byte tag + 4 bytes value
+ }
+
+ return position;
+ }
+
+ @Override
+ protected Object decode(
+ Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+ ChannelBuffer buf = (ChannelBuffer) msg;
+
+ byte startSign = buf.readByte();
+
+ if (startSign == HEADER_START_SIGN) {
+
+ byte version = buf.readByte();
+
+ String imei = String.valueOf(buf.readLong());
+ DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei);
+
+ if (deviceSession != null) {
+ sendResponse(channel, version, 0);
+ }
+
+ return null;
+ }
+
+ DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
+ if (deviceSession == null) {
+ return null;
+ }
+
+ List<Position> positions = new LinkedList<>();
+
+ int index = buf.readUnsignedByte();
+
+ byte recordType = buf.readByte();
+ while (buf.readableBytes() > 0) {
+ switch (recordType) {
+ case RECORD_PING:
+ case RECORD_DATA:
+ case RECORD_TEXT:
+ case RECORD_FILE:
+ case RECORD_BINARY:
+ int length = buf.readUnsignedShort();
+ Date time = new Date(buf.readUnsignedInt() * 1000);
+
+ if (recordType == RECORD_DATA) {
+ positions.add(decodePosition(deviceSession, buf, length, time));
+ } else {
+ buf.readBytes(length); // Skip other types of record
+ }
+
+ buf.readUnsignedByte(); // crc
+ break;
+
+ default:
+ return null; // Ignore unsupported types of record
+ }
+
+ recordType = buf.readByte();
+ }
+
+ sendResponse(channel, HEADER_VERSION_1, index);
+
+ return positions;
+ }
+
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-09 23:57:32 +0000