package com.genersoft.iot.vmp.gb28181.transmit.event.request.impl;
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import com.genersoft.iot.vmp.conf.SipConfig;
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import com.genersoft.iot.vmp.gb28181.bean.Device;
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import com.genersoft.iot.vmp.gb28181.bean.WvpSipDate;
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import com.genersoft.iot.vmp.gb28181.transmit.SIPProcessorObserver;
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import com.genersoft.iot.vmp.gb28181.transmit.event.request.ISIPRequestProcessor;
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import com.genersoft.iot.vmp.gb28181.transmit.event.request.SIPRequestProcessorParent;
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import com.genersoft.iot.vmp.gb28181.auth.DigestServerAuthenticationHelper;
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import com.genersoft.iot.vmp.service.IDeviceService;
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import com.genersoft.iot.vmp.utils.DateUtil;
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import gov.nist.javax.sip.RequestEventExt;
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import gov.nist.javax.sip.address.AddressImpl;
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import gov.nist.javax.sip.address.SipUri;
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import gov.nist.javax.sip.header.Expires;
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import gov.nist.javax.sip.header.SIPDateHeader;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.beans.factory.InitializingBean;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Component;
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import org.springframework.util.StringUtils;
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import javax.sip.InvalidArgumentException;
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import javax.sip.RequestEvent;
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import javax.sip.ServerTransaction;
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import javax.sip.SipException;
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import javax.sip.header.*;
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import javax.sip.message.Request;
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import javax.sip.message.Response;
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import java.security.NoSuchAlgorithmException;
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import java.text.ParseException;
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import java.util.Calendar;
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import java.util.Locale;
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/**
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* SIP命令类型： REGISTER请求
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*/
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@Component
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public class RegisterRequestProcessor extends SIPRequestProcessorParent implements InitializingBean, ISIPRequestProcessor {
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private final Logger logger = LoggerFactory.getLogger(RegisterRequestProcessor.class);
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public final String method = "REGISTER";
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@Autowired
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private SipConfig sipConfig;
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@Autowired
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private SIPProcessorObserver sipProcessorObserver;
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@Autowired
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private IDeviceService deviceService;
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@Override
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public void afterPropertiesSet() throws Exception {
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// 添加消息处理的订阅
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sipProcessorObserver.addRequestProcessor(method, this);
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}
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/**
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* 收到注册请求 处理
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*
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* @param evt
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*/
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@Override
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public void process(RequestEvent evt) {
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try {
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RequestEventExt evtExt = (RequestEventExt) evt;
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String requestAddress = evtExt.getRemoteIpAddress() + ":" + evtExt.getRemotePort();
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logger.info("[注册请求] 开始处理: {}", requestAddress);
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Request request = evt.getRequest();
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ExpiresHeader expiresHeader = (ExpiresHeader) request.getHeader(Expires.NAME);
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Response response = null;
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boolean passwordCorrect = false;
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// 注册标志
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boolean registerFlag = false;
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FromHeader fromHeader = (FromHeader) request.getHeader(FromHeader.NAME);
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AddressImpl address = (AddressImpl) fromHeader.getAddress();
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SipUri uri = (SipUri) address.getURI();
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String deviceId = uri.getUser();
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AuthorizationHeader authHead = (AuthorizationHeader) request.getHeader(AuthorizationHeader.NAME);
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if (authHead == null && !StringUtils.isEmpty(sipConfig.getPassword())) {
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logger.info("[注册请求] 未携带授权头 回复401: {}", requestAddress);
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response = getMessageFactory().createResponse(Response.UNAUTHORIZED, request);
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new DigestServerAuthenticationHelper().generateChallenge(getHeaderFactory(), response, sipConfig.getDomain());
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sendResponse(evt, response);
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return;
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}
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// 校验密码是否正确
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passwordCorrect = StringUtils.isEmpty(sipConfig.getPassword()) ||
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new DigestServerAuthenticationHelper().doAuthenticatePlainTextPassword(request, sipConfig.getPassword());
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if (!passwordCorrect) {
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// 注册失败
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response = getMessageFactory().createResponse(Response.FORBIDDEN, request);
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response.setReasonPhrase("wrong password");
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logger.info("[注册请求] 密码/SIP服务器ID错误, 回复403: {}", requestAddress);
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sendResponse(evt, response);
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return;
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}
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Device device = deviceService.queryDevice(deviceId);
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// 携带授权头并且密码正确
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response = getMessageFactory().createResponse(Response.OK, request);
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// 添加date头
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SIPDateHeader dateHeader = new SIPDateHeader();
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// 使用自己修改的
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WvpSipDate wvpSipDate = new WvpSipDate(Calendar.getInstance(Locale.ENGLISH).getTimeInMillis());
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dateHeader.setDate(wvpSipDate);
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response.addHeader(dateHeader);
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if (expiresHeader == null) {
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response = getMessageFactory().createResponse(Response.BAD_REQUEST, request);
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ServerTransaction serverTransaction = getServerTransaction(evt);
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serverTransaction.sendResponse(response);
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if (serverTransaction.getDialog() != null) {
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serverTransaction.getDialog().delete();
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}
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return;
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}
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// 添加Contact头
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response.addHeader(request.getHeader(ContactHeader.NAME));
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// 添加Expires头
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response.addHeader(request.getExpires());
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// 获取到通信地址等信息
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ViaHeader viaHeader = (ViaHeader) request.getHeader(ViaHeader.NAME);
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String received = viaHeader.getReceived();
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int rPort = viaHeader.getRPort();
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// 解析本地地址替代
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if (StringUtils.isEmpty(received) || rPort == -1) {
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received = viaHeader.getHost();
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rPort = viaHeader.getPort();
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}
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if (device == null) {
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device = new Device();
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device.setStreamMode("UDP");
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device.setCharset("GB2312");
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device.setGeoCoordSys("WGS84");
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device.setTreeType("CivilCode");
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device.setDeviceId(deviceId);
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}
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device.setIp(received);
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device.setPort(rPort);
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device.setHostAddress(received.concat(":").concat(String.valueOf(rPort)));
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if (expiresHeader.getExpires() == 0) {
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// 注销成功
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registerFlag = false;
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} else {
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// 注册成功
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device.setExpires(expiresHeader.getExpires());
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registerFlag = true;
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// 判断TCP还是UDP
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ViaHeader reqViaHeader = (ViaHeader) request.getHeader(ViaHeader.NAME);
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String transport = reqViaHeader.getTransport();
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device.setTransport("TCP".equals(transport) ? "TCP" : "UDP");
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}
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sendResponse(evt, response);
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// 注册成功
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// 保存到redis
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if (registerFlag) {
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logger.info("[注册成功] deviceId: {}->{}", deviceId, requestAddress);
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device.setRegisterTime(DateUtil.getNow());
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deviceService.online(device);
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} else {
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logger.info("[注销成功] deviceId: {}->{}" ,deviceId, requestAddress);
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deviceService.offline(deviceId);
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}
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} catch (SipException | InvalidArgumentException | NoSuchAlgorithmException | ParseException e) {
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e.printStackTrace();
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}
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}
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private void sendResponse(RequestEvent evt, Response response) throws InvalidArgumentException, SipException {
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ServerTransaction serverTransaction = getServerTransaction(evt);
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if (serverTransaction == null) {
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logger.warn("[回复失败]：{}", response);
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return;
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}
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serverTransaction.sendResponse(response);
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if (serverTransaction.getDialog() != null) {
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serverTransaction.getDialog().delete();
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}
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}
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}
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