Decode AquilaB emergency packets

vvertigoo · Aug 3, 2018 · 18e64c7 · 18e64c7
1 parent a4ad137
commit 18e64c7
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Showing 2 changed files with 73 additions and 11 deletions.
diff --git a/src/org/traccar/protocol/AquilaProtocolDecoder.java b/src/org/traccar/protocol/AquilaProtocolDecoder.java
@@ -217,11 +217,12 @@ private Position decodeA(Channel channel, SocketAddress remoteAddress, String se
         return position;
     }
 
-    private static final Pattern PATTERN_B = new PatternBuilder()
-            .text("$Header,")
+    private static final Pattern PATTERN_B_1 = new PatternBuilder()
+            .text("$")
+            .expression("[^,]+,")                // header
             .expression("[^,]+,")                // client
             .expression("[^,]+,")                // firmware version
-            .expression(".{2},")                 // type
+            .expression(".{2},")                 // packet type
             .number("d+,")                       // message id
             .expression("[LH],")                 // status
             .number("(d+),")                     // imei
@@ -264,9 +265,62 @@ private Position decodeA(Channel channel, SocketAddress remoteAddress, String se
             .any()
             .compile();
 
-    private Position decodeB(Channel channel, SocketAddress remoteAddress, String sentence) {
+    private static final Pattern PATTERN_B_2 = new PatternBuilder()
+            .text("$")
+            .expression("[^,]+,")                // header
+            .expression("[^,]+,")                // client
+            .expression("(.{3}),")               // message type
+            .number("(d+),")                     // imei
+            .expression(".{2},")                 // packet type
+            .number("(dd)(dd)(dddd)")            // date (ddmmyyyy)
+            .number("(dd)(dd)(dd),")             // time (hhmmss)
+            .expression("([AV]),")               // validity
+            .number("(-?d+.d+),")                // latitude
+            .expression("([NS]),")
+            .number("(-?d+.d+),")                // longitude
+            .expression("([EW]),")
+            .number("(-?d+.d+),")                // altitude
+            .number("(d+.d+),")                  // speed
+            .any()
+            .compile();
+
+    private Position decodeB2(Channel channel, SocketAddress remoteAddress, String sentence) {
+
+        Parser parser = new Parser(PATTERN_B_2, sentence);
+        if (!parser.matches()) {
+            return null;
+        }
+
+        String type = parser.next();
+        String id = parser.next();
+        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, id);
+        if (deviceSession == null) {
+            return null;
+        }
+
+        Position position = new Position(getProtocolName());
+        position.setDeviceId(deviceSession.getDeviceId());
+
+        position.setTime(parser.nextDateTime(Parser.DateTimeFormat.DMY_HMS));
+        position.setValid(parser.next().equals("A"));
+        position.setLatitude(parser.nextCoordinate(Parser.CoordinateFormat.DEG_HEM));
+        position.setLongitude(parser.nextCoordinate(Parser.CoordinateFormat.DEG_HEM));
+        position.setAltitude(parser.nextDouble());
+        position.setSpeed(UnitsConverter.knotsFromKph(parser.nextDouble()));
 
-        Parser parser = new Parser(PATTERN_B, sentence);
+        if (type.equals("EMR") && channel != null) {
+            String password = Context.getIdentityManager().lookupAttributeString(
+                    deviceSession.getDeviceId(), getProtocolName() + ".password", "aquila123", true);
+            channel.writeAndFlush(new NetworkMessage(
+                    "#set$" + id + "@" + password + "#EMR_MODE:0*", remoteAddress));
+        }
+
+        return position;
+    }
+
+    private Position decodeB1(Channel channel, SocketAddress remoteAddress, String sentence) {
+
+        Parser parser = new Parser(PATTERN_B_1, sentence);
         if (!parser.matches()) {
             return null;
         }
@@ -300,12 +354,6 @@ private Position decodeB(Channel channel, SocketAddress remoteAddress, String se
 
         if (parser.nextInt() == 1) {
             position.set(Position.KEY_ALARM, Position.ALARM_SOS);
-            if (channel != null) {
-                String password = Context.getIdentityManager().lookupAttributeString(
-                        position.getDeviceId(), getProtocolName() + ".password", "aquila123", true);
-                channel.writeAndFlush(new NetworkMessage(
-                        "#set$" + id + "@" + password + "#EMR_MODE:0*", remoteAddress));
-            }
         }
 
         Network network = new Network();
@@ -330,6 +378,14 @@ private Position decodeB(Channel channel, SocketAddress remoteAddress, String se
         return position;
     }
 
+    private Position decodeB(Channel channel, SocketAddress remoteAddress, String sentence) {
+        if (sentence.contains("EMR") || sentence.contains("SEM")) {
+            return decodeB2(channel, remoteAddress, sentence);
+        } else {
+            return decodeB1(channel, remoteAddress, sentence);
+        }
+    }
+
     @Override
     protected Object decode(
             Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {

diff --git a/test/org/traccar/protocol/AquilaProtocolDecoderTest.java b/test/org/traccar/protocol/AquilaProtocolDecoderTest.java
@@ -56,6 +56,12 @@ public void testDecodeB() throws Exception {
 
         AquilaProtocolDecoder decoder = new AquilaProtocolDecoder(new AquilaProtocol());
 
+        verifyPosition(decoder, text(
+                "$Header,nliven,EMR,861693034634154,NM,09112017155133,A,12.976495,N,77.549713,E,906.0,0.0,23,G,KA01I2000,+919844098440*4B"));
+
+        verifyPosition(decoder, text(
+                "$EPB,iTriangle1,EMR,864495034445822,SP,03082018110730,A,22.829292,N,75.935806,E,543.0,0.0,0,G,KA01G1234,+9164061023*13"));
+
         verifyPosition(decoder, text(
                 "$Header,iTriangle,1_37T02B0164MAIS_2,NR,1,L,864495034490141,KA01I2000,1,19042018,102926,22.846401,N,75.948952,E,0.0,311,5,578.0,3.80,3.67,AirTel,0,1,12.5,4.3,1,C,14,404,93,0456,16db,29,ebd8,0458,28,3843,18ab,25,072e,18ab,22,35da,0458,0000,00,031181,0.0,0.0,0,()*34"));