648540858
2022-02-24 a42dda2bd3cc1cf8c20cc61e7ad9211eadecbaf3
src/main/java/com/genersoft/iot/vmp/gb28181/transmit/event/request/SIPRequestProcessorParent.java
@@ -4,6 +4,7 @@
import gov.nist.javax.sip.SipStackImpl;
import gov.nist.javax.sip.message.SIPRequest;
import gov.nist.javax.sip.stack.SIPServerTransaction;
import org.apache.commons.lang3.ArrayUtils;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.Element;
@@ -18,13 +19,19 @@
import javax.sip.address.AddressFactory;
import javax.sip.address.SipURI;
import javax.sip.header.ContentTypeHeader;
import javax.sip.header.ExpiresHeader;
import javax.sip.header.HeaderFactory;
import javax.sip.header.ViaHeader;
import javax.sip.message.MessageFactory;
import javax.sip.message.Request;
import javax.sip.message.Response;
import java.io.ByteArrayInputStream;
import java.nio.ByteBuffer;
import java.nio.charset.StandardCharsets;
import java.text.ParseException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
/**    
 * @description:处理接收IPCamera发来的SIP协议请求消息
@@ -124,6 +131,10 @@
   public void responseAck(RequestEvent evt, int statusCode) throws SipException, InvalidArgumentException, ParseException {
      Response response = getMessageFactory().createResponse(statusCode, evt.getRequest());
      ServerTransaction serverTransaction = getServerTransaction(evt);
      if (serverTransaction == null) {
         logger.warn("回复失败:{}", response);
         return;
      }
      serverTransaction.sendResponse(response);
      if (statusCode >= 200 && !"NOTIFY".equals(evt.getRequest().getMethod())) {
@@ -149,7 +160,7 @@
    * @throws InvalidArgumentException
    * @throws ParseException
    */
   public void responseAck(RequestEvent evt, String sdp) throws SipException, InvalidArgumentException, ParseException {
   public void responseSdpAck(RequestEvent evt, String sdp) throws SipException, InvalidArgumentException, ParseException {
      Response response = getMessageFactory().createResponse(Response.OK, evt.getRequest());
      SipFactory sipFactory = SipFactory.getInstance();
      ContentTypeHeader contentTypeHeader = sipFactory.createHeaderFactory().createContentTypeHeader("APPLICATION", "SDP");
@@ -164,6 +175,31 @@
      getServerTransaction(evt).sendResponse(response);
   }
   /**
    * 回复带xml的200
    * @param evt
    * @param xml
    * @throws SipException
    * @throws InvalidArgumentException
    * @throws ParseException
    */
   public Response responseXmlAck(RequestEvent evt, String xml) throws SipException, InvalidArgumentException, ParseException {
      Response response = getMessageFactory().createResponse(Response.OK, evt.getRequest());
      SipFactory sipFactory = SipFactory.getInstance();
      ContentTypeHeader contentTypeHeader = sipFactory.createHeaderFactory().createContentTypeHeader("APPLICATION", "MANSCDP+xml");
      response.setContent(xml, contentTypeHeader);
      SipURI sipURI = (SipURI)evt.getRequest().getRequestURI();
      Address concatAddress = sipFactory.createAddressFactory().createAddress(
            sipFactory.createAddressFactory().createSipURI(sipURI.getUser(),  sipURI.getHost()+":"+sipURI.getPort()
            ));
      response.addHeader(sipFactory.createHeaderFactory().createContactHeader(concatAddress));
      response.addHeader(evt.getRequest().getHeader(ExpiresHeader.NAME));
      getServerTransaction(evt).sendResponse(response);
      return response;
   }
   public Element getRootElement(RequestEvent evt) throws DocumentException {
      return getRootElement(evt, "gb2312");
   }
@@ -172,7 +208,32 @@
      Request request = evt.getRequest();
      SAXReader reader = new SAXReader();
      reader.setEncoding(charset);
      Document xml = reader.read(new ByteArrayInputStream(request.getRawContent()));
      // 对海康出现的未转义字符做处理。
      String[] destStrArray = new String[]{"<",">","&","'","""};
      char despChar = '&'; // 或许可扩展兼容其他字符
      byte destBye = (byte) despChar;
      List<Byte> result = new ArrayList<>();
      byte[] rawContent = request.getRawContent();
      for (int i = 0; i < rawContent.length; i++) {
         if (rawContent[i] == destBye) {
            boolean resul = false;
            for (String destStr : destStrArray) {
               if (i + destStr.length() <= rawContent.length) {
                  byte[] bytes = Arrays.copyOfRange(rawContent, i, i + destStr.length());
                  resul = resul || (Arrays.equals(bytes,destStr.getBytes()));
               }
            }
            if (resul) {
               result.add(rawContent[i]);
            }
         }else {
            result.add(rawContent[i]);
         }
      }
      Byte[] bytes = new Byte[0];
      byte[] bytesResult = ArrayUtils.toPrimitive(result.toArray(bytes));
      Document xml = reader.read(new ByteArrayInputStream(bytesResult));
      return xml.getRootElement();
   }