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-rw-r--r--src/main/java/org/traccar/protocol/AdmFrameDecoder.java47
-rw-r--r--src/main/java/org/traccar/protocol/AdmProtocol.java7
-rw-r--r--src/main/java/org/traccar/protocol/AdmProtocolDecoder.java4
3 files changed, 53 insertions, 5 deletions
diff --git a/src/main/java/org/traccar/protocol/AdmFrameDecoder.java b/src/main/java/org/traccar/protocol/AdmFrameDecoder.java
new file mode 100644
index 000000000..7ee9b6874
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/AdmFrameDecoder.java
@@ -0,0 +1,47 @@
+/*
+ * Copyright 2021 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.protocol;
+
+import io.netty.buffer.ByteBuf;
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelHandlerContext;
+import org.traccar.BaseFrameDecoder;
+
+public class AdmFrameDecoder extends BaseFrameDecoder {
+
+ @Override
+ protected Object decode(
+ ChannelHandlerContext ctx, Channel channel, ByteBuf buf) throws Exception {
+
+ if (buf.readableBytes() < 15 + 3) {
+ return null;
+ }
+
+ int length;
+ if (Character.isDigit(buf.getUnsignedByte(buf.readerIndex()))) {
+ length = 15 + buf.getUnsignedByte(buf.readerIndex() + 15 + 2);
+ } else {
+ length = buf.getUnsignedByte(buf.readerIndex() + 2);
+ }
+
+ if (buf.readableBytes() >= length) {
+ return buf.readRetainedSlice(length);
+ }
+
+ return null;
+ }
+
+}
diff --git a/src/main/java/org/traccar/protocol/AdmProtocol.java b/src/main/java/org/traccar/protocol/AdmProtocol.java
index 93b1e355a..d1d81118c 100644
--- a/src/main/java/org/traccar/protocol/AdmProtocol.java
+++ b/src/main/java/org/traccar/protocol/AdmProtocol.java
@@ -1,5 +1,5 @@
/*
- * Copyright 2015 - 2019 Anton Tananaev (anton@traccar.org)
+ * Copyright 2015 - 2021 Anton Tananaev (anton@traccar.org)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -15,15 +15,12 @@
*/
package org.traccar.protocol;
-import io.netty.handler.codec.LengthFieldBasedFrameDecoder;
import io.netty.handler.codec.string.StringEncoder;
import org.traccar.BaseProtocol;
import org.traccar.PipelineBuilder;
import org.traccar.TrackerServer;
import org.traccar.model.Command;
-import java.nio.ByteOrder;
-
public class AdmProtocol extends BaseProtocol {
public AdmProtocol() {
@@ -33,7 +30,7 @@ public class AdmProtocol extends BaseProtocol {
addServer(new TrackerServer(false, getName()) {
@Override
protected void addProtocolHandlers(PipelineBuilder pipeline) {
- pipeline.addLast(new LengthFieldBasedFrameDecoder(ByteOrder.LITTLE_ENDIAN, 1024, 2, 1, -3, 0, true));
+ pipeline.addLast(new AdmFrameDecoder());
pipeline.addLast(new StringEncoder());
pipeline.addLast(new AdmProtocolEncoder(AdmProtocol.this));
pipeline.addLast(new AdmProtocolDecoder(AdmProtocol.this));
diff --git a/src/main/java/org/traccar/protocol/AdmProtocolDecoder.java b/src/main/java/org/traccar/protocol/AdmProtocolDecoder.java
index 52d1439ed..31064286e 100644
--- a/src/main/java/org/traccar/protocol/AdmProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/AdmProtocolDecoder.java
@@ -178,6 +178,10 @@ public class AdmProtocolDecoder extends BaseProtocolDecoder {
protected Object decode(Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
ByteBuf buf = (ByteBuf) msg;
+ if (Character.isDigit(buf.getUnsignedByte(buf.readerIndex()))) {
+ getDeviceSession(channel, remoteAddress, buf.readSlice(15).toString(StandardCharsets.UTF_8));
+ }
+
buf.readUnsignedShortLE(); // device id
int size = buf.readUnsignedByte();