From a7f7df0ebdf56a6dbaa5a17600c05c5b6d3033a4 Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Wed, 18 Nov 2015 22:04:41 +1300
Subject: Support GSM based locations (fix #346)

---
 debug.xml                                          |  2 ++
 src/org/traccar/location/BaseLocationProvider.java | 22 +++++++++----
 .../traccar/protocol/Gps103ProtocolDecoder.java    | 36 +++++++++++++++++++---
 .../protocol/Gps103ProtocolDecoderTest.java        |  5 ++-
 4 files changed, 54 insertions(+), 11 deletions(-)

diff --git a/debug.xml b/debug.xml
index 2e6e4e12a..426dadc4c 100644
--- a/debug.xml
+++ b/debug.xml
@@ -20,6 +20,8 @@
 
     <entry key='location.enable'>false</entry>
     <entry key='location.key'>fake</entry>
+    <entry key='location.mcc'>260</entry>
+    <entry key='location.mnc'>2</entry>
 
     <entry key='distance.enable'>true</entry>
 
diff --git a/src/org/traccar/location/BaseLocationProvider.java b/src/org/traccar/location/BaseLocationProvider.java
index 80b10b33c..d6eddc1cd 100644
--- a/src/org/traccar/location/BaseLocationProvider.java
+++ b/src/org/traccar/location/BaseLocationProvider.java
@@ -15,6 +15,7 @@
  */
 package org.traccar.location;
 
+import org.traccar.Context;
 import org.traccar.model.Event;
 
 import java.util.Map;
@@ -23,13 +24,22 @@ public abstract class BaseLocationProvider implements LocationProvider {
 
     @Override
     public void getLocation(Map<String, Object> attributes, LocationProviderCallback callback) {
-        if (attributes.containsKey(Event.KEY_MCC) || attributes.containsKey(Event.KEY_MNC)) {
-            Number mcc = (Number) attributes.get(Event.KEY_MCC);
-            Number mnc = (Number) attributes.get(Event.KEY_MNC);
-            Number lac = (Number) attributes.get(Event.KEY_LAC);
-            Number cid = (Number) attributes.get(Event.KEY_CID);
-            getLocation(mcc.intValue(), mnc.intValue(), lac.longValue(), cid.longValue(), callback);
+
+        Number mcc = (Number) attributes.get(Event.KEY_MCC);
+        if (mcc == null) {
+            mcc = Context.getConfig().getInteger("location.mcc");
+        }
+
+        Number mnc = (Number) attributes.get(Event.KEY_MNC);
+        if (mnc == null) {
+            mnc = Context.getConfig().getInteger("location.mnc");
         }
+
+        Number lac = (Number) attributes.get(Event.KEY_LAC);
+        Number cid = (Number) attributes.get(Event.KEY_CID);
+
+        getLocation(mcc.intValue(), mnc.intValue(), lac.longValue(), cid.longValue(), callback);
+
     }
 
     protected abstract void getLocation(int mcc, int mnc, long lac, long cid, LocationProviderCallback callback);
diff --git a/src/org/traccar/protocol/Gps103ProtocolDecoder.java b/src/org/traccar/protocol/Gps103ProtocolDecoder.java
index aa693f42e..a91848f5b 100644
--- a/src/org/traccar/protocol/Gps103ProtocolDecoder.java
+++ b/src/org/traccar/protocol/Gps103ProtocolDecoder.java
@@ -63,6 +63,17 @@ public class Gps103ProtocolDecoder extends BaseProtocolDecoder {
             .any()
             .compile();
 
+    private static final Pattern PATTERN_NETWORK = new PatternBuilder()
+            .text("imei:")
+            .number("(d+),")                     // imei
+            .expression("[^,]+,")                // alarm
+            .number("d+,,")
+            .text("L,,,")
+            .number("(x+),,")                    // lac
+            .number("(x+),,,")                   // cid
+            .any()
+            .compile();
+
     private static final Pattern PATTERN_HANDSHAKE = new PatternBuilder()
             .number("##,imei:(d+),A")
             .compile();
@@ -93,14 +104,31 @@ public class Gps103ProtocolDecoder extends BaseProtocolDecoder {
             return null;
         }
 
-        Parser parser = new Parser(PATTERN, sentence);
+        Position position = new Position();
+        position.setProtocol(getProtocolName());
+
+        Parser parser = new Parser(PATTERN_NETWORK, sentence);
+        if (parser.matches()) {
+
+            if (!identify(parser.next(), channel, remoteAddress)) {
+                return null;
+            }
+            position.setDeviceId(getDeviceId());
+
+            getLastLocation(position, null);
+
+            position.set(Event.KEY_LAC, parser.nextInt(16));
+            position.set(Event.KEY_CID, parser.nextInt(16));
+
+            return position;
+
+        }
+
+        parser = new Parser(PATTERN, sentence);
         if (!parser.matches()) {
             return null;
         }
 
-        Position position = new Position();
-        position.setProtocol(getProtocolName());
-
         String imei = parser.next();
         if (!identify(imei, channel, remoteAddress)) {
             return null;
diff --git a/test/org/traccar/protocol/Gps103ProtocolDecoderTest.java b/test/org/traccar/protocol/Gps103ProtocolDecoderTest.java
index 03d7b5c72..371b137fd 100644
--- a/test/org/traccar/protocol/Gps103ProtocolDecoderTest.java
+++ b/test/org/traccar/protocol/Gps103ProtocolDecoderTest.java
@@ -10,7 +10,10 @@ public class Gps103ProtocolDecoderTest extends ProtocolDecoderTest {
 
         Gps103ProtocolDecoder decoder = new Gps103ProtocolDecoder(new Gps103Protocol());
 
-        verifyNothing(decoder, text(
+        verifyAttributes(decoder, text(
+                "imei:359710041100000,tracker,000000000,,L,,,fa8,,c9af,,,,,0,0,0.00%,,"));
+
+        verifyAttributes(decoder, text(
                 "imei:863070016871385,tracker,0000000119,,L,,,0FB6,,CB5D,,,"));
 
         verifyPosition(decoder, text(
-- 
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