From 32cf37a4784418bc9be8d66add1b51af3aa91a4d Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Thu, 16 Mar 2017 06:20:43 +1300
Subject: Implement Ulbotech response handling

---
 .../traccar/protocol/UlbotechProtocolDecoder.java  | 62 +++++++++++++++++++---
 1 file changed, 55 insertions(+), 7 deletions(-)

(limited to 'src/org/traccar')

diff --git a/src/org/traccar/protocol/UlbotechProtocolDecoder.java b/src/org/traccar/protocol/UlbotechProtocolDecoder.java
index 19e9cd5e9..97912e128 100644
--- a/src/org/traccar/protocol/UlbotechProtocolDecoder.java
+++ b/src/org/traccar/protocol/UlbotechProtocolDecoder.java
@@ -22,7 +22,10 @@ import org.traccar.BaseProtocolDecoder;
 import org.traccar.Context;
 import org.traccar.DeviceSession;
 import org.traccar.helper.BitUtil;
+import org.traccar.helper.DateBuilder;
 import org.traccar.helper.ObdDecoder;
+import org.traccar.helper.Parser;
+import org.traccar.helper.PatternBuilder;
 import org.traccar.helper.UnitsConverter;
 import org.traccar.model.CellTower;
 import org.traccar.model.Network;
@@ -31,6 +34,7 @@ import org.traccar.model.Position;
 import java.net.SocketAddress;
 import java.nio.charset.StandardCharsets;
 import java.util.Date;
+import java.util.regex.Pattern;
 
 public class UlbotechProtocolDecoder extends BaseProtocolDecoder {
 
@@ -161,27 +165,58 @@ public class UlbotechProtocolDecoder extends BaseProtocolDecoder {
         }
     }
 
-    @Override
-    protected Object decode(
-            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+    private static final Pattern PATTERN = new PatternBuilder()
+            .text("*TS")
+            .number("dd,")                       // protocol version
+            .number("(d{15}),")                  // device id
+            .number("(dd)(dd)(dd)")              // time
+            .number("(dd)(dd)(dd),")             // date
+            .expression("([^#]+)")               // command
+            .text("#")
+            .compile();
 
-        ChannelBuffer buf = (ChannelBuffer) msg;
+    private Object decodeText(Channel channel, SocketAddress remoteAddress, String sentence) {
 
-        if (buf.readUnsignedByte() != 0xF8) {
+        Parser parser = new Parser(PATTERN, sentence);
+        if (!parser.matches()) {
             return null;
         }
 
-        buf.readUnsignedByte(); // version
-        buf.readUnsignedByte(); // type
+        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next());
+        if (deviceSession == null) {
+            return null;
+        }
 
         Position position = new Position();
         position.setProtocol(getProtocolName());
+        position.setDeviceId(deviceSession.getDeviceId());
+
+        DateBuilder dateBuilder = new DateBuilder()
+                .setTime(parser.nextInt(), parser.nextInt(), parser.nextInt())
+                .setDateReverse(parser.nextInt(), parser.nextInt(), parser.nextInt());
+
+        getLastLocation(position, dateBuilder.getDate());
+
+        position.set(Position.KEY_RESULT, parser.next());
+
+        return position;
+    }
+
+    private Object decodeBinary(Channel channel, SocketAddress remoteAddress, ChannelBuffer buf) {
+
+        buf.readUnsignedByte(); // header
+        buf.readUnsignedByte(); // version
+        buf.readUnsignedByte(); // type
 
         String imei = ChannelBuffers.hexDump(buf.readBytes(8)).substring(1);
+
         DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei);
         if (deviceSession == null) {
             return null;
         }
+
+        Position position = new Position();
+        position.setProtocol(getProtocolName());
         position.setDeviceId(deviceSession.getDeviceId());
 
         long seconds = buf.readUnsignedInt() & 0x7fffffffL;
@@ -298,4 +333,17 @@ public class UlbotechProtocolDecoder extends BaseProtocolDecoder {
         return position;
     }
 
+    @Override
+    protected Object decode(
+            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+        ChannelBuffer buf = (ChannelBuffer) msg;
+
+        if (buf.getUnsignedByte(buf.readerIndex()) == 0xF8) {
+            return decodeBinary(channel, remoteAddress, buf);
+        } else {
+            return decodeText(channel, remoteAddress, buf.toString(StandardCharsets.US_ASCII));
+        }
+    }
+
 }
-- 
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