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-rw-r--r--src/org/traccar/protocol/TaipProtocolDecoder.java181
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+/*
+ * Copyright 2013 - 2015 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.
+ * 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 java.util.Calendar;
+import java.util.Date;
+import java.util.TimeZone;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.jboss.netty.channel.Channel;
+import org.jboss.netty.channel.ChannelHandlerContext;
+
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.Protocol;
+import org.traccar.helper.UnitsConverter;
+import org.traccar.model.Position;
+
+public class TaipProtocolDecoder extends BaseProtocolDecoder {
+
+ boolean sendResponse;
+
+ public TaipProtocolDecoder(TaipProtocol protocol, boolean sendResponse) {
+ super(protocol);
+ this.sendResponse = sendResponse;
+ }
+
+ private static final Pattern pattern = Pattern.compile(
+ "(?:R[EP]V" + // Type
+ "(?:\\d{2}" + // Event index
+ "(\\d{4})" + // Week
+ "(\\d))?" + // Day
+ "(\\d{5})|" + // Seconds
+ "RGP" + // Type
+ "(\\d{2})(\\d{2})(\\d{2})" + // Date
+ "(\\d{2})(\\d{2})(\\d{2}))" + // Time
+ "([\\+\\-]\\d{2})(\\d{5})" + // Latitude
+ "([\\+\\-]\\d{3})(\\d{5})" + // Longitude
+ "(\\d{3})" + // Speed
+ "(\\d{3})" + // Course
+ "(\\d)" + // Fix mode
+ ".*\r?\n?");
+
+ private Date getTime(long week, long day, long seconds) {
+ Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
+ time.clear();
+ time.set(Calendar.YEAR, 1980);
+ time.set(Calendar.MONTH, 0);
+ time.set(Calendar.DAY_OF_MONTH, 6);
+
+ long millis = time.getTimeInMillis();
+ millis += ((week * 7 + day) * 24 * 60 * 60 + seconds) * 1000;
+
+ return new Date(millis);
+ }
+
+ private Date getTime(long seconds) {
+ Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
+ time.set(Calendar.HOUR_OF_DAY, 0);
+ time.set(Calendar.MINUTE, 0);
+ time.set(Calendar.SECOND, 0);
+ time.set(Calendar.MILLISECOND, 0);
+
+ long millis = time.getTimeInMillis() + seconds * 1000;
+
+ long diff = new Date().getTime() - millis;
+
+ if (diff > 12 * 60 * 60 * 1000) {
+ millis += 24 * 60 * 60 * 1000;
+ } else if (diff < -12 * 60 * 60 * 1000) {
+ millis -= 24 * 60 * 60 * 1000;
+ }
+
+ return new Date(millis);
+ }
+
+ @Override
+ protected Object decode(
+ ChannelHandlerContext ctx, Channel channel, Object msg)
+ throws Exception {
+
+ String sentence = (String) msg;
+
+ // Find message start
+ int beginIndex = sentence.indexOf('>');
+ if (beginIndex != -1) {
+ sentence = sentence.substring(beginIndex + 1);
+ }
+
+ // Find device ID
+ beginIndex = sentence.indexOf(";ID=");
+ if (beginIndex != -1) {
+ beginIndex += 4;
+ int endIndex = sentence.indexOf(';', beginIndex);
+ if (endIndex == -1) {
+ endIndex = sentence.length();
+ }
+
+ // Find device in database
+ String id = sentence.substring(beginIndex, endIndex);
+ if (!identify(id, channel)) {
+ return null;
+ }
+
+ // Send response
+ if (sendResponse && channel != null) {
+ channel.write(id);
+ }
+ } else {
+ return null;
+ }
+
+ // Parse message
+ Matcher parser = pattern.matcher(sentence);
+ if (!parser.matches()) {
+ return null;
+ }
+
+ // Create new position
+ Position position = new Position();
+ position.setProtocol(getProtocolName());
+ position.setDeviceId(getDeviceId());
+
+ Integer index = 1;
+
+ // Time
+ String week = parser.group(index++);
+ String day = parser.group(index++);
+ String seconds = parser.group(index++);
+ if (seconds != null) {
+ if (week != null && day != null) {
+ position.setTime(getTime(Integer.valueOf(week), Integer.valueOf(day), Integer.valueOf(seconds)));
+ } else {
+ position.setTime(getTime(Integer.valueOf(seconds)));
+ }
+ index += 6;
+ } else {
+ Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
+ time.clear();
+ time.set(Calendar.DAY_OF_MONTH, Integer.valueOf(parser.group(index++)));
+ time.set(Calendar.MONTH, Integer.valueOf(parser.group(index++)) - 1);
+ time.set(Calendar.YEAR, 2000 + Integer.valueOf(parser.group(index++)));
+ time.set(Calendar.HOUR_OF_DAY, Integer.valueOf(parser.group(index++)));
+ time.set(Calendar.MINUTE, Integer.valueOf(parser.group(index++)));
+ time.set(Calendar.SECOND, Integer.valueOf(parser.group(index++)));
+ position.setTime(time.getTime());
+ }
+
+ // Latitude
+ String latitude = parser.group(index) + '.' + parser.group(index + 1);
+ index += 2;
+ position.setLatitude(Double.valueOf(latitude));
+
+ // Latitude
+ String longitude = parser.group(index) + '.' + parser.group(index + 1);
+ index += 2;
+ position.setLongitude(Double.valueOf(longitude));
+
+ // Speed and Course
+ position.setSpeed(UnitsConverter.knotsFromMph(Double.valueOf(parser.group(index++))));
+ position.setCourse(Double.valueOf(parser.group(index++)));
+
+ // Validity
+ position.setValid(Integer.valueOf(parser.group(index++)) != 0);
+ return position;
+ }
+
+}