From ca2cca9355c3b36b2e7ed9ad808db797fa94cb78 Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Wed, 16 Jan 2019 21:40:38 -0800
Subject: Support 105B and 103B photos

---
 .../traccar/protocol/Gps103ProtocolDecoder.java    | 47 +++++++++++++++++++++-
 .../protocol/Gps103ProtocolDecoderTest.java        |  6 +++
 2 files changed, 52 insertions(+), 1 deletion(-)

diff --git a/src/org/traccar/protocol/Gps103ProtocolDecoder.java b/src/org/traccar/protocol/Gps103ProtocolDecoder.java
index 1fbae15ce..27b94739b 100644
--- a/src/org/traccar/protocol/Gps103ProtocolDecoder.java
+++ b/src/org/traccar/protocol/Gps103ProtocolDecoder.java
@@ -15,11 +15,15 @@
  */
 package org.traccar.protocol;
 
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
 import io.netty.channel.Channel;
 import org.traccar.BaseProtocolDecoder;
+import org.traccar.Context;
 import org.traccar.DeviceSession;
 import org.traccar.NetworkMessage;
 import org.traccar.Protocol;
+import org.traccar.helper.DataConverter;
 import org.traccar.helper.DateBuilder;
 import org.traccar.helper.Parser;
 import org.traccar.helper.PatternBuilder;
@@ -34,6 +38,9 @@ import java.util.regex.Pattern;
 
 public class Gps103ProtocolDecoder extends BaseProtocolDecoder {
 
+    private int photoPackets = 0;
+    private ByteBuf photo;
+
     public Gps103ProtocolDecoder(Protocol protocol) {
         super(protocol);
     }
@@ -190,6 +197,9 @@ public class Gps103ProtocolDecoder extends BaseProtocolDecoder {
             if (channel != null) {
                 channel.writeAndFlush(new NetworkMessage("**,imei:" + imei + ",E;", remoteAddress));
             }
+        } else if (alarm.startsWith("vt")) {
+            photoPackets = Integer.parseInt(alarm.substring(2));
+            photo = Unpooled.buffer();
         } else if (alarm.equals("acc on")) {
             position.set(Position.KEY_IGNITION, true);
         } else if (alarm.equals("acc off")) {
@@ -336,6 +346,39 @@ public class Gps103ProtocolDecoder extends BaseProtocolDecoder {
         return position;
     }
 
+    private Position decodePhoto(Channel channel, SocketAddress remoteAddress, String sentence) {
+
+        String imei = sentence.substring(5, 5 + 15);
+        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei);
+        if (deviceSession == null) {
+            return null;
+        }
+
+        ByteBuf buf = Unpooled.wrappedBuffer(DataConverter.parseHex(
+                sentence.substring(24, sentence.endsWith(";") ? sentence.length() - 1 : sentence.length())));
+        int index = buf.readUnsignedShortLE();
+        photo.writeBytes(buf, buf.readerIndex() + 2, buf.readableBytes() - 4);
+
+        if (index + 1 >= photoPackets) {
+            Position position = new Position(getProtocolName());
+            position.setDeviceId(deviceSession.getDeviceId());
+
+            getLastLocation(position, null);
+
+            try {
+                position.set(Position.KEY_IMAGE, Context.getMediaManager().writeFile(imei, photo, "jpg"));
+            } finally {
+                photoPackets = 0;
+                photo.release();
+                photo = null;
+            }
+
+            return position;
+        } else {
+            return null;
+        }
+    }
+
     @Override
     protected Object decode(
             Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
@@ -365,7 +408,9 @@ public class Gps103ProtocolDecoder extends BaseProtocolDecoder {
             }
         }
 
-        if (sentence.contains("OBD")) {
+        if (sentence.substring(21, 21 + 2).equals("vr")) {
+            return decodePhoto(channel, remoteAddress, sentence);
+        } else if (sentence.substring(21, 21 + 3).contains("OBD")) {
             return decodeObd(channel, remoteAddress, sentence);
         } else if (sentence.endsWith("*")) {
             return decodeAlternative(channel, remoteAddress, sentence);
diff --git a/test/org/traccar/protocol/Gps103ProtocolDecoderTest.java b/test/org/traccar/protocol/Gps103ProtocolDecoderTest.java
index 00e85f5e3..b44eb26f9 100644
--- a/test/org/traccar/protocol/Gps103ProtocolDecoderTest.java
+++ b/test/org/traccar/protocol/Gps103ProtocolDecoderTest.java
@@ -11,6 +11,12 @@ public class Gps103ProtocolDecoderTest extends ProtocolTest {
 
         Gps103ProtocolDecoder decoder = new Gps103ProtocolDecoder(null);
 
+        verifyPosition(decoder, text(
+                "imei:864180034124375,vt14,190116192753,,F,172750.000,A,3649.2186,N,00235.8411,W,0.00,0,,0,0,51.93%,,+22;"));
+
+        verifyNull(decoder, text(
+                "imei:864180034124375,vr,0c00fa011ea05a03d726977103ad0034c98ef49e6d303fffd1c8361303f2dbb0fa530d8ca3930be3e94f4110145c7029a507a0a00028f4a70514c05c500503170334b400531971cad002ab7634f001a4027949c8e541ea47f853bca2f961ba427ab1e290089197711c485e4f6e82ad0d1ee8f25573eed4af60284f6935bb7ef2307f1dc3f4355bbf3f90a607ffd2e5fcc6c60310be80f152dbca54ed53147fed3ae7fa1fe54809e45330fdedc993d073b7f2a6340a00d8cabeb9a4980c68900e5cb1f6e29aab9e00fc334012a5a5c32e5227c7b21a9a2d35dc02cdb49edb189fe545ec058fec7565e667cfa08b1fccd34686e4f12003dd7ffaf4b980957440bd595beb53269bb082a517dd570693604cb6299cb1663f5a9d608e3e42807d71cd002d206028011e50aa49381513494011349cd2092803ffd3d031f154ef11bc86d870781f8679a90302540adc545c55a00e28c8a602e47ad2e46680133cd19e6800cd1cf4a0063293ce695188e0d20265e58559305c3ffcb2948eca10d20278adb50518890c40f5ed9a5fece941ccb29cfd19ff00c2a6e860d6471c7da1cffb3b507eb9aaafa3dc4a4909b7fdf6c9fd28b88fffd4ca5d06e7b94152af87a53f7a7403d949a8e60265f0eaff0014ee7e8807f5a99340857abcadf881fd2973013a6936f1f48d4ffbc01fe95652dd63fba00fa521926d1de8e07a51600dc3d01d00;"));
+
         verifyPosition(decoder, text(
                 "imei:868683026321020,T:+11,181217080050,,F,080047.000,A,3227.3057,N,11649.4754,W,0.00,0,,0,0,0.00%,,+11;"));
 
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