From 3e809b9509b26e5446e1262c8d1dd5703b814f58 Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Mon, 21 Jan 2013 20:05:01 +1300
Subject: Progress bug workaround

---
 src/org/traccar/protocol/ProgressProtocolDecoder.java | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/org/traccar/protocol/ProgressProtocolDecoder.java b/src/org/traccar/protocol/ProgressProtocolDecoder.java
index 43fce472c..57cf82235 100644
--- a/src/org/traccar/protocol/ProgressProtocolDecoder.java
+++ b/src/org/traccar/protocol/ProgressProtocolDecoder.java
@@ -149,7 +149,9 @@ public class ProgressProtocolDecoder extends BaseProtocolDecoder {
                     if (subtype == MSG_ALARM) {
                         extendedInfo.append("<alarm>true</alarm>");
                     }
-                    buf.readUnsignedShort(); // length
+                    if (buf.readUnsignedShort() > buf.readableBytes()) {
+                        break; // workaround for device bug
+                    }
                     lastIndex = buf.readUnsignedInt();
                     position.setId(lastIndex);
                 } else {
-- 
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