From fc56f571dbef88316ef3dbf98d8351e6e34cba62 Mon Sep 17 00:00:00 2001 From: Anton Tananaev Date: Fri, 2 Jul 2021 13:33:37 -0700 Subject: Initial STB IND protocol support --- .../java/org/traccar/protocol/StbFrameDecoder.java | 55 ++++++++++++++++++ .../java/org/traccar/protocol/StbProtocol.java | 38 +++++++++++++ .../org/traccar/protocol/StbProtocolDecoder.java | 66 ++++++++++++++++++++++ 3 files changed, 159 insertions(+) create mode 100644 src/main/java/org/traccar/protocol/StbFrameDecoder.java create mode 100644 src/main/java/org/traccar/protocol/StbProtocol.java create mode 100644 src/main/java/org/traccar/protocol/StbProtocolDecoder.java (limited to 'src/main') diff --git a/src/main/java/org/traccar/protocol/StbFrameDecoder.java b/src/main/java/org/traccar/protocol/StbFrameDecoder.java new file mode 100644 index 000000000..6a4157f17 --- /dev/null +++ b/src/main/java/org/traccar/protocol/StbFrameDecoder.java @@ -0,0 +1,55 @@ +/* + * 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 StbFrameDecoder extends BaseFrameDecoder { + + @Override + protected Object decode( + ChannelHandlerContext ctx, Channel channel, ByteBuf buf) throws Exception { + + int startIndex = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) '{'); + if (startIndex >= 0) { + + buf.readerIndex(startIndex); + + int currentIndex = startIndex + 1; + int nesting = 1; + while (currentIndex < buf.writerIndex() && nesting > 0) { + byte currentByte = buf.getByte(currentIndex); + if (currentByte == '{') { + nesting += 1; + } else if (currentByte == '}') { + nesting -= 1; + } + currentIndex += 1; + } + + if (nesting == 0) { + return buf.readRetainedSlice(currentIndex - startIndex); + } + + } + + return null; + } + +} diff --git a/src/main/java/org/traccar/protocol/StbProtocol.java b/src/main/java/org/traccar/protocol/StbProtocol.java new file mode 100644 index 000000000..ca95787d0 --- /dev/null +++ b/src/main/java/org/traccar/protocol/StbProtocol.java @@ -0,0 +1,38 @@ +/* + * 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.handler.codec.string.StringDecoder; +import io.netty.handler.codec.string.StringEncoder; +import org.traccar.BaseProtocol; +import org.traccar.PipelineBuilder; +import org.traccar.TrackerServer; + +public class StbProtocol extends BaseProtocol { + + public StbProtocol() { + addServer(new TrackerServer(false, getName()) { + @Override + protected void addProtocolHandlers(PipelineBuilder pipeline) { + pipeline.addLast(new StbFrameDecoder()); + pipeline.addLast(new StringEncoder()); + pipeline.addLast(new StringDecoder()); + pipeline.addLast(new StbProtocolDecoder(StbProtocol.this)); + } + }); + } + +} diff --git a/src/main/java/org/traccar/protocol/StbProtocolDecoder.java b/src/main/java/org/traccar/protocol/StbProtocolDecoder.java new file mode 100644 index 000000000..7e25674b9 --- /dev/null +++ b/src/main/java/org/traccar/protocol/StbProtocolDecoder.java @@ -0,0 +1,66 @@ +/* + * 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 com.fasterxml.jackson.annotation.JsonProperty; +import io.netty.channel.Channel; +import org.traccar.BaseProtocolDecoder; +import org.traccar.Context; +import org.traccar.NetworkMessage; +import org.traccar.Protocol; + +import javax.json.Json; +import javax.json.JsonObject; +import java.io.StringReader; +import java.net.SocketAddress; + +public class StbProtocolDecoder extends BaseProtocolDecoder { + + public StbProtocolDecoder(Protocol protocol) { + super(protocol); + } + + public static class Response { + @JsonProperty("msgType") + private int type; + @JsonProperty("devId") + private String deviceId; + @JsonProperty("result") + private int result; + @JsonProperty("txnNo") + private String transaction; + } + + @Override + protected Object decode( + Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { + + JsonObject root = Json.createReader(new StringReader((String) msg)).readObject(); + + Response response = new Response(); + response.type = root.getInt("msgType"); + response.deviceId = root.getString("devId"); + response.result = 1; + response.transaction = root.getString("txnNo"); + if (channel != null) { + channel.writeAndFlush(new NetworkMessage( + Context.getObjectMapper().writeValueAsString(response), remoteAddress)); + } + + return null; + } + +} -- cgit v1.2.3