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Diffstat (limited to 'src/main/java/org/traccar/protocol/CalAmpProtocolDecoder.java')
-rw-r--r--src/main/java/org/traccar/protocol/CalAmpProtocolDecoder.java202
1 files changed, 202 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/CalAmpProtocolDecoder.java b/src/main/java/org/traccar/protocol/CalAmpProtocolDecoder.java
new file mode 100644
index 000000000..31416d7f1
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/CalAmpProtocolDecoder.java
@@ -0,0 +1,202 @@
+/*
+ * Copyright 2015 - 2018 Anton Tananaev (anton@traccar.org)
+ *
+ * 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 io.netty.buffer.ByteBuf;
+import io.netty.buffer.ByteBufUtil;
+import io.netty.buffer.Unpooled;
+import io.netty.channel.Channel;
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.DeviceSession;
+import org.traccar.NetworkMessage;
+import org.traccar.Protocol;
+import org.traccar.helper.BitUtil;
+import org.traccar.helper.UnitsConverter;
+import org.traccar.model.Position;
+
+import java.net.SocketAddress;
+import java.util.Date;
+
+public class CalAmpProtocolDecoder extends BaseProtocolDecoder {
+
+ public CalAmpProtocolDecoder(Protocol protocol) {
+ super(protocol);
+ }
+
+ public static final int MSG_NULL = 0;
+ public static final int MSG_ACK = 1;
+ public static final int MSG_EVENT_REPORT = 2;
+ public static final int MSG_ID_REPORT = 3;
+ public static final int MSG_USER_DATA = 4;
+ public static final int MSG_APP_DATA = 5;
+ public static final int MSG_CONFIG = 6;
+ public static final int MSG_UNIT_REQUEST = 7;
+ public static final int MSG_LOCATE_REPORT = 8;
+ public static final int MSG_USER_DATA_ACC = 9;
+ public static final int MSG_MINI_EVENT_REPORT = 10;
+ public static final int MSG_MINI_USER_DATA = 11;
+
+ public static final int SERVICE_UNACKNOWLEDGED = 0;
+ public static final int SERVICE_ACKNOWLEDGED = 1;
+ public static final int SERVICE_RESPONSE = 2;
+
+ private void sendResponse(Channel channel, SocketAddress remoteAddress, int type, int index, int result) {
+ if (channel != null) {
+ ByteBuf response = Unpooled.buffer(10);
+ response.writeByte(SERVICE_RESPONSE);
+ response.writeByte(MSG_ACK);
+ response.writeShort(index);
+ response.writeByte(type);
+ response.writeByte(result);
+ response.writeByte(0);
+ response.writeMedium(0);
+ channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
+ }
+ }
+
+ private Position decodePosition(DeviceSession deviceSession, int type, ByteBuf buf) {
+
+ Position position = new Position(getProtocolName());
+ position.setDeviceId(deviceSession.getDeviceId());
+
+ position.setTime(new Date(buf.readUnsignedInt() * 1000));
+ if (type != MSG_MINI_EVENT_REPORT) {
+ buf.readUnsignedInt(); // fix time
+ }
+ position.setLatitude(buf.readInt() * 0.0000001);
+ position.setLongitude(buf.readInt() * 0.0000001);
+ if (type != MSG_MINI_EVENT_REPORT) {
+ position.setAltitude(buf.readInt() * 0.01);
+ position.setSpeed(UnitsConverter.knotsFromCps(buf.readUnsignedInt()));
+ }
+ position.setCourse(buf.readShort());
+ if (type == MSG_MINI_EVENT_REPORT) {
+ position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedByte()));
+ }
+
+ if (type == MSG_MINI_EVENT_REPORT) {
+ position.set(Position.KEY_SATELLITES, buf.getUnsignedByte(buf.readerIndex()) & 0xf);
+ position.setValid((buf.readUnsignedByte() & 0x20) == 0);
+ } else {
+ position.set(Position.KEY_SATELLITES, buf.readUnsignedByte());
+ position.setValid((buf.readUnsignedByte() & 0x08) == 0);
+ }
+
+ if (type != MSG_MINI_EVENT_REPORT) {
+ position.set("carrier", buf.readUnsignedShort());
+ position.set(Position.KEY_RSSI, buf.readShort());
+ }
+
+ position.set("modem", buf.readUnsignedByte());
+
+ if (type != MSG_MINI_EVENT_REPORT) {
+ position.set(Position.KEY_HDOP, buf.readUnsignedByte());
+ }
+
+ int input = buf.readUnsignedByte();
+ position.set(Position.KEY_INPUT, input);
+ position.set(Position.KEY_IGNITION, BitUtil.check(input, 0));
+
+ if (type != MSG_MINI_EVENT_REPORT) {
+ position.set(Position.KEY_STATUS, buf.readUnsignedByte());
+ }
+
+ if (type == MSG_EVENT_REPORT || type == MSG_MINI_EVENT_REPORT) {
+ if (type != MSG_MINI_EVENT_REPORT) {
+ buf.readUnsignedByte(); // event index
+ }
+ position.set(Position.KEY_EVENT, buf.readUnsignedByte());
+ }
+
+ int accType = BitUtil.from(buf.getUnsignedByte(buf.readerIndex()), 6);
+ int accCount = BitUtil.to(buf.readUnsignedByte(), 6);
+
+ if (type != MSG_MINI_EVENT_REPORT) {
+ position.set("append", buf.readUnsignedByte());
+ }
+
+ if (accType == 1) {
+ buf.readUnsignedInt(); // threshold
+ buf.readUnsignedInt(); // mask
+ }
+
+ for (int i = 0; i < accCount; i++) {
+ if (buf.readableBytes() >= 4) {
+ position.set("acc" + i, buf.readUnsignedInt());
+ }
+ }
+
+ return position;
+ }
+
+ @Override
+ protected Object decode(
+ Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+ ByteBuf buf = (ByteBuf) msg;
+
+ if (BitUtil.check(buf.getByte(buf.readerIndex()), 7)) {
+
+ int content = buf.readUnsignedByte();
+
+ if (BitUtil.check(content, 0)) {
+ String id = ByteBufUtil.hexDump(buf.readSlice(buf.readUnsignedByte()));
+ getDeviceSession(channel, remoteAddress, id);
+ }
+
+ if (BitUtil.check(content, 1)) {
+ buf.skipBytes(buf.readUnsignedByte()); // identifier type
+ }
+
+ if (BitUtil.check(content, 2)) {
+ buf.skipBytes(buf.readUnsignedByte()); // authentication
+ }
+
+ if (BitUtil.check(content, 3)) {
+ buf.skipBytes(buf.readUnsignedByte()); // routing
+ }
+
+ if (BitUtil.check(content, 4)) {
+ buf.skipBytes(buf.readUnsignedByte()); // forwarding
+ }
+
+ if (BitUtil.check(content, 5)) {
+ buf.skipBytes(buf.readUnsignedByte()); // response redirection
+ }
+
+ }
+
+ DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
+ if (deviceSession == null) {
+ return null;
+ }
+
+ int service = buf.readUnsignedByte();
+ int type = buf.readUnsignedByte();
+ int index = buf.readUnsignedShort();
+
+ if (service == SERVICE_ACKNOWLEDGED) {
+ sendResponse(channel, remoteAddress, type, index, 0);
+ }
+
+ if (type == MSG_EVENT_REPORT || type == MSG_LOCATE_REPORT || type == MSG_MINI_EVENT_REPORT) {
+ return decodePosition(deviceSession, type, buf);
+ }
+
+ return null;
+ }
+
+}