diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/org/traccar/helper/Crc.java | 17 | ||||
| -rw-r--r-- | src/org/traccar/protocol/MeiligaoProtocolDecoder.java | 15 |
2 files changed, 23 insertions, 9 deletions
diff --git a/src/org/traccar/helper/Crc.java b/src/org/traccar/helper/Crc.java index 5a668f30a..213d1192a 100644 --- a/src/org/traccar/helper/Crc.java +++ b/src/org/traccar/helper/Crc.java @@ -154,4 +154,21 @@ public class Crc { return String.format("*%02x", checksum).toUpperCase(); } + public static String luhnChecksum(String s) { + int sum = 0; + boolean evenPosition = true; + for (int i = s.length() - 1; i >= 0; i--) { + int n = Integer.parseInt(s.substring(i, i + 1)); + if (evenPosition) { + n *= 2; + if (n > 9) { + n = (n % 10) + 1; + } + } + sum += n; + evenPosition = !evenPosition; + } + return String.valueOf(10 - sum % 10); + } + } diff --git a/src/org/traccar/protocol/MeiligaoProtocolDecoder.java b/src/org/traccar/protocol/MeiligaoProtocolDecoder.java index b28b38dc8..7ad91a807 100644 --- a/src/org/traccar/protocol/MeiligaoProtocolDecoder.java +++ b/src/org/traccar/protocol/MeiligaoProtocolDecoder.java @@ -1,5 +1,5 @@ /* - * Copyright 2012 - 2013 Anton Tananaev (anton.tananaev@gmail.com) + * Copyright 2012 - 2014 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. @@ -60,10 +60,7 @@ public class MeiligaoProtocolDecoder extends BaseProtocolDecoder { "(?:\\|([0-9a-fA-F]+))?" + // Milage ".*"); // TODO: parse ADC - /** - * Parse device id - */ - private String getId(ChannelBuffer buf) { + private String getImei(ChannelBuffer buf) { String id = ""; for (int i = 0; i < 7; i++) { @@ -80,7 +77,7 @@ public class MeiligaoProtocolDecoder extends BaseProtocolDecoder { id += d2; } - return id; + return id + Crc.luhnChecksum(id); } @Override @@ -135,11 +132,11 @@ public class MeiligaoProtocolDecoder extends BaseProtocolDecoder { } // Get device by id - String id = getId(buf); + String imei = getImei(buf); try { - position.setDeviceId(getDataManager().getDeviceByImei(id).getId()); + position.setDeviceId(getDataManager().getDeviceByImei(imei).getId()); } catch(Exception error) { - Log.warning("Unknown device - " + id); + Log.warning("Unknown device - " + imei); return null; } |