Merge pull request #2081 from Abyss777/master

Granit protocol implementation

3 files changed, 319 insertions, 0 deletions

diff --git a/src/org/traccar/protocol/GranitProtocol.java b/src/org/traccar/protocol/GranitProtocol.java
new file mode 100644
index 000000000..a33c43d20
--- /dev/null
+++ b/src/org/traccar/protocol/GranitProtocol.java
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2016 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.bootstrap.ServerBootstrap;
+import org.jboss.netty.channel.ChannelPipeline;
+import org.jboss.netty.handler.codec.frame.LineBasedFrameDecoder;
+import org.traccar.BaseProtocol;
+import org.traccar.TrackerServer;
+import org.traccar.model.Command;
+
+import java.nio.ByteOrder;
+import java.util.List;
+
+public class GranitProtocol extends BaseProtocol {
+
+    public GranitProtocol() {
+        super("granit");
+        setSupportedCommands(
+                Command.TYPE_IDENTIFICATION,
+                Command.TYPE_REBOOT_DEVICE,
+                Command.TYPE_POSITION_SINGLE);
+    }
+
+    @Override
+    public void initTrackerServers(List<TrackerServer> serverList) {
+        TrackerServer server = new TrackerServer(new ServerBootstrap(), this.getName()) {
+            @Override
+            protected void addSpecificHandlers(ChannelPipeline pipeline) {
+                pipeline.addLast("frameDecoder", new LineBasedFrameDecoder(1024));
+                pipeline.addLast("objectEncoder", new GranitProtocolEncoder());
+                pipeline.addLast("objectDecoder", new GranitProtocolDecoder(GranitProtocol.this));
+            }
+        };
+        server.setEndianness(ByteOrder.LITTLE_ENDIAN);
+        serverList.add(server);
+    }
+
+}
diff --git a/src/org/traccar/protocol/GranitProtocolDecoder.java b/src/org/traccar/protocol/GranitProtocolDecoder.java
new file mode 100644
index 000000000..b92bc72e2
--- /dev/null
+++ b/src/org/traccar/protocol/GranitProtocolDecoder.java
@@ -0,0 +1,212 @@
+/*
+ * Copyright 2016 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.buffer.ChannelBuffers;
+import org.jboss.netty.channel.Channel;
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.helper.BitUtil;
+import org.traccar.helper.Checksum;
+import org.traccar.model.Position;
+
+import java.net.SocketAddress;
+import java.nio.ByteOrder;
+import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+public class GranitProtocolDecoder extends BaseProtocolDecoder {
+
+    private static final int HEADER_LENGTH = 6;
+
+    public GranitProtocolDecoder(GranitProtocol protocol) {
+        super(protocol);
+    }
+
+    public static void appendChecksum(ChannelBuffer buffer, int length) {
+        buffer.writeByte('*');
+        int checksum = Checksum.xor(buffer.toByteBuffer(0, length)) & 0xFF;
+        String checksumString = String.format("%02X", checksum);
+        buffer.writeBytes(checksumString.getBytes(StandardCharsets.US_ASCII));
+        buffer.writeByte('\r'); buffer.writeByte('\n');
+    }
+
+    private static void sendResponseCurrent(Channel channel, int deviceId, long time) {
+        ChannelBuffer response = ChannelBuffers.dynamicBuffer(ByteOrder.LITTLE_ENDIAN, 0);
+        response.writeBytes("BB+UGRC~".getBytes(StandardCharsets.US_ASCII));
+        response.writeShort(6); //binary length
+        response.writeInt((int) time);
+        response.writeShort(deviceId);
+        appendChecksum(response, 16);
+        channel.write(response);
+    }
+
+    private static void sendResponseArchive(Channel channel, int deviceId, int packNum) {
+        ChannelBuffer response = ChannelBuffers.dynamicBuffer(ByteOrder.LITTLE_ENDIAN, 0);
+        response.writeBytes("BB+ARCF~".getBytes(StandardCharsets.US_ASCII));
+        response.writeShort(4); //binary length
+        response.writeShort(packNum);
+        response.writeShort(deviceId);
+        appendChecksum(response, 14);
+        channel.write(response);
+    }
+
+    private static void decodeStructure(ChannelBuffer buf, Position position) {
+        short flags = buf.readUnsignedByte();
+        position.setValid(BitUtil.check(flags, 7));
+        position.set(Position.KEY_ALARM, BitUtil.check(flags, 1));
+
+        short satDel = buf.readUnsignedByte();
+        position.set(Position.KEY_SATELLITES, BitUtil.from(satDel, 4));
+
+        int pdop = BitUtil.to(satDel, 4);
+        position.set("pdop", pdop);
+
+        int lonDegrees = buf.readUnsignedByte();
+        int latDegrees = buf.readUnsignedByte();
+        int lonMinutes = buf.readUnsignedShort();
+        int latMinutes = buf.readUnsignedShort();
+        double latitude = latDegrees + latMinutes / 60000.0;
+        double longitude = lonDegrees + lonMinutes / 60000.0;
+        if (!BitUtil.check(flags, 4)) {
+            latitude = -latDegrees;
+        }
+        if (!BitUtil.check(flags, 5)) {
+            longitude = -longitude;
+        }
+        position.setLongitude(longitude);
+        position.setLatitude(latitude);
+
+        position.setSpeed(buf.readUnsignedByte());
+
+        int course = buf.readUnsignedByte();
+        if (BitUtil.check(flags, 6)) {
+            course = course | 0x100;
+        }
+        position.setCourse(course);
+
+        position.set(Position.KEY_DISTANCE, buf.readShort());
+
+        int analogIn1 = buf.readUnsignedByte();
+        int analogIn2 = buf.readUnsignedByte();
+        int analogIn3 = buf.readUnsignedByte();
+        int analogIn4 = buf.readUnsignedByte();
+
+        int analogInHi = buf.readUnsignedByte();
+
+        analogIn1 = analogInHi << 8 & 0x300 | analogIn1;
+        analogIn2 = analogInHi << 6 & 0x300 | analogIn2;
+        analogIn3 = analogInHi << 4 & 0x300 | analogIn3;
+        analogIn4 = analogInHi << 2 & 0x300 | analogIn4;
+
+        position.set(Position.PREFIX_ADC + 1, analogIn1);
+        position.set(Position.PREFIX_ADC + 2, analogIn2);
+        position.set(Position.PREFIX_ADC + 3, analogIn3);
+        position.set(Position.PREFIX_ADC + 4, analogIn4);
+
+        position.setAltitude(buf.readUnsignedByte() * 10);
+
+        short diOut = buf.readUnsignedByte();
+        for (int i = 0; i < 8; i++) {
+            position.set(Position.PREFIX_IO + (i + 1), BitUtil.check(diOut, i));
+        }
+        buf.skipBytes(1); //StatMess
+    }
+
+    @Override
+    protected Object decode(Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+        ChannelBuffer buf = (ChannelBuffer) msg;
+        String bufString = buf.toString(StandardCharsets.US_ASCII);
+        if (hasDeviceId() &&  bufString.contains("OK") || bufString.startsWith("ERROR")
+                || bufString.startsWith("+PR") || bufString.startsWith("+IDNT")
+                || bufString.startsWith("+BBMD")) {
+            Position position = new Position();
+            position.setProtocol(getProtocolName());
+            position.setDeviceId(getDeviceId());
+
+            position.setTime(new Date());
+            getLastLocation(position, new Date());
+            position.setValid(false);
+            position.set(Position.KEY_RESULT, bufString);
+
+            return position;
+        }
+
+        if (buf.readableBytes() < HEADER_LENGTH) {
+            return null;
+        }
+        buf.skipBytes(HEADER_LENGTH);
+
+        if (bufString.startsWith("+RRCB~")) {
+            buf.skipBytes(2); //binary length 26
+            int deviceId = buf.readUnsignedShort();
+            if (!identify(String.valueOf(deviceId), channel, remoteAddress)) {
+                return null;
+            }
+            long unixTime = buf.readUnsignedInt();
+            if (channel != null) {
+                sendResponseCurrent(channel, deviceId, unixTime);
+            }
+            Position position = new Position();
+            position.setProtocol(getProtocolName());
+            position.setDeviceId(getDeviceId());
+
+            position.setTime(new Date(unixTime * 1000));
+
+            decodeStructure(buf, position);
+            return position;
+
+        } else if (bufString.startsWith("+DDAT~")) {
+            buf.skipBytes(2); //binary length
+            int deviceId = buf.readUnsignedShort();
+            if (!identify(String.valueOf(deviceId), channel, remoteAddress)) {
+                return null;
+            }
+            byte format = buf.readByte();
+            if (format != 4) {
+                return null;
+            }
+            byte nblocks = buf.readByte();
+            int packNum = buf.readUnsignedShort();
+            if (channel != null) {
+                sendResponseArchive(channel, deviceId, packNum);
+            }
+            List<Position> positions = new ArrayList<>();
+            while (nblocks > 0) {
+                nblocks--;
+                long unixTime = buf.readUnsignedInt();
+                for (int i = 0; i < 6; i++) {
+                    if (buf.getUnsignedByte(buf.readerIndex()) != 0xFE) {
+                        Position position = new Position();
+                        position.setProtocol(getProtocolName());
+                        position.setDeviceId(getDeviceId());
+                        position.setTime(new Date(unixTime * 1000));
+                        decodeStructure(buf, position);
+                        positions.add(position);
+                    } else {
+                        buf.skipBytes(20); // skip filled 0xFE structure
+                    }
+                }
+                buf.skipBytes(2); // increment
+            }
+            return positions;
+        }
+        return null;
+    }
+}
diff --git a/src/org/traccar/protocol/GranitProtocolEncoder.java b/src/org/traccar/protocol/GranitProtocolEncoder.java
new file mode 100644
index 000000000..961f183f5
--- /dev/null
+++ b/src/org/traccar/protocol/GranitProtocolEncoder.java
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2016 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.nio.charset.StandardCharsets;
+
+import org.jboss.netty.buffer.ChannelBuffer;
+import org.jboss.netty.buffer.ChannelBuffers;
+import org.traccar.BaseProtocolEncoder;
+import org.traccar.helper.Log;
+import org.traccar.model.Command;
+
+public class GranitProtocolEncoder extends BaseProtocolEncoder {
+    @Override
+    protected Object encodeCommand(Command command) {
+
+        String commandString = "";
+
+        switch (command.getType()) {
+        case Command.TYPE_IDENTIFICATION:
+            commandString = "BB+IDNT";
+            break;
+        case Command.TYPE_REBOOT_DEVICE:
+            commandString = "BB+RESET";
+            break;
+        case Command.TYPE_POSITION_SINGLE:
+            commandString = "BB+RRCD";
+            break;
+        default:
+            Log.warning(new UnsupportedOperationException(command.getType()));
+            return null;
+        }
+        if (!commandString.isEmpty()) {
+            ChannelBuffer commandBuf = ChannelBuffers.dynamicBuffer();
+            commandBuf.writeBytes(commandString.getBytes(StandardCharsets.US_ASCII));
+            GranitProtocolDecoder.appendChecksum(commandBuf, commandString.length());
+            return commandBuf;
+        }
+        return null;
+    }
+
+}