package com.terra.proxy.servlet;
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import java.io.BufferedReader;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.io.OutputStream;
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import java.net.URI;
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import java.util.Date;
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import java.util.zip.GZIPInputStream;
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import java.util.zip.GZIPOutputStream;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import org.apache.http.*;
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import org.apache.http.client.utils.URIUtils;
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import org.apache.http.entity.BasicHttpEntity;
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import org.mitre.dsmiley.httpproxy.ProxyServlet;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import com.alibaba.fastjson.JSONObject;
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import com.alibaba.fastjson.serializer.SerializerFeature;
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import com.terra.proxy.bean.VistorBean;
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import com.terra.proxy.proxy.SolrProxyServletConfiguration;
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import com.terra.proxy.util.HttpContextUtils;
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import com.terra.proxy.util.JedisUtils;
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import cn.hutool.json.JSONArray;
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import cn.hutool.json.XML;
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import redis.clients.jedis.Jedis;
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public class ZjProxyServlet extends ProxyServlet {
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private String layer;
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private boolean flag;
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private Logger log = LoggerFactory.getLogger(ZjProxyServlet.class);
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protected String rewriteUrlFromRequest(HttpServletRequest servletRequest) {
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// 获取来源ip,统计调用次数
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flag = Boolean.parseBoolean(this.getConfigParam("flag"));
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VistorBean vb = new VistorBean();
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vb.setRequestip(servletRequest.getRemoteHost());
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if (servletRequest.getRequestURI() != null) {
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vb.setServerurl(servletRequest.getRequestURI());
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}
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URI errorurl = URI.create("http://" + "localhost" + ":" + servletRequest.getServerPort() + "/404.html");
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StringBuilder queryString2 = new StringBuilder(1000);
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StringBuilder uri = new StringBuilder(500);
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if (getTargetUri(servletRequest) != null) {
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uri.append(getTargetUri(servletRequest));
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}
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if (servletRequest.getPathInfo() != null) {
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uri.append(encodeUriQuery(servletRequest.getPathInfo()));
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}
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String queryString = servletRequest.getQueryString();
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if (queryString != null) {
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// 针对请求地址的参数做操作
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// 判断是否带了token
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if (flag && queryString.indexOf("token") == -1) {
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servletRequest.setAttribute(ATTR_TARGET_HOST, URIUtils.extractHost(errorurl));
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vb.setResult("fail");
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visitlogsaveinredis(vb);
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return "http://" + "localhost" + ":" + servletRequest.getLocalPort() + "/500.html";
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}
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String par[] = queryString.split("&");
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for (int i = 0; i < par.length; i++) {
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String a = par[i].split("=")[0];
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String v = par[i].split("=").length >= 2 ? par[i].split("=")[1] : "";
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if (a.equals("layers") && v.contains("mpt")) {
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layer = v.replace(".", " ");
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}
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if ("token".equals(a)) {
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// 判断内存里有咩有匹配的token,咩有去redis库里查询，库里没有，则在内存和库中存储，库里有，存入内存
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if (flag) {
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if (!SolrProxyServletConfiguration.tokens.contains(v)) {
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Jedis jedis = null;
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try {
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jedis = JedisUtils.getJedis();
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if (!jedis.exists(v)) {
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servletRequest.setAttribute(ATTR_TARGET_HOST, URIUtils.extractHost(errorurl));
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vb.setResult("fail");
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visitlogsaveinredis(vb);
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return "http://" + "localhost" + ":" + servletRequest.getLocalPort()
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+ "/tokenerror.html";
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}
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} catch (Exception e) {
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e.printStackTrace();
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} finally {
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jedis.close();
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}
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}
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}
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} else {
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queryString2.append("&").append(par[i]);
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}
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}
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} else {
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if (flag) {
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vb.setResult("fail");
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visitlogsaveinredis(vb);
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return "http://" + "localhost" + ":" + servletRequest.getLocalPort() + "/500.html";
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}
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}
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String fragment = null;
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if (queryString != null) {
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int fragIdx = queryString.indexOf('#');
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if (fragIdx >= 0) {
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fragment = queryString.substring(fragIdx + 1);
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queryString = queryString.substring(0, fragIdx);
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}
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}
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if ((queryString2 != null) && (queryString2.length() > 0)) {
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uri.append('?');
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uri.append(encodeUriQuery(queryString2));
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}
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if ((this.doSendUrlFragment) && (fragment != null)) {
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uri.append('#');
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uri.append(encodeUriQuery(fragment));
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}
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vb.setResult("ok");
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visitlogsaveinredis(vb);
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System.out.println(uri.toString());
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return uri.toString();
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}
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/**
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* 统计不同ip调用服务次数,并将其存入入redis
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*/
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private void visitlogsaveinredis(VistorBean vb) {
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String fromip = vb.getRequestip();
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vb.setDate(new Date());
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vb.setVisitfromsys("ZJZT");
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Jedis jedis = null;
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try {
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jedis = JedisUtils.getJedis();
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jedis.sadd("visitlog",
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JSONObject.toJSONStringWithDateFormat(vb, "yyyy-MM-dd HH:mm:ss", SerializerFeature.PrettyFormat));
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} catch (Exception e) {
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log.error("redis包错");
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} finally {
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jedis.close();
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}
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}
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protected void copyResponseEntity(HttpResponse proxyResponse, HttpServletResponse servletResponse)
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throws IOException {
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HttpEntity entity = proxyResponse.getEntity();
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BufferedReader reader;
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InputStream is = entity.getContent();
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Boolean imageFlag = false;
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Boolean htmlFlag = false;
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Header contentType = entity.getContentType();
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if (null != contentType) {
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HeaderElement[] elements = contentType.getElements();
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for (HeaderElement element : elements) {
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if (element.getName().contains("image")) {
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imageFlag = true;
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}
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}
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}
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if (!imageFlag && isgzip(entity)) {
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reader = new BufferedReader(new InputStreamReader(new GZIPInputStream(is)));
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StringBuffer sb = new StringBuffer();
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String s = null;
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while ((s = reader.readLine()) != null) {
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sb.append(s);
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}
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String result = sb.toString();
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result = result.replaceAll("<table[^>]*>((?!table).)*</table>", "");
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String repx = "<a[^>]+>([^<]+</a>)";//a标签过滤
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result = result.replaceAll(
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repx,
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"");
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result = result.replaceAll("(http|https)://[^/]+/", "/");
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result = result.replaceAll("/arcgis/rest/services", "");
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HttpServletRequest hsr = HttpContextUtils.getHttpServletRequest();
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BasicHttpEntity entity2 = new BasicHttpEntity();
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byte[] bt;
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bt = compress(result);
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ByteArrayInputStream btinput = new ByteArrayInputStream(bt);
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entity2.setContent(btinput);
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entity2.setContentEncoding("gzip");
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entity2.setContentType(entity.getContentType());
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entity2.setChunked(false);
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if (entity2 != null) {
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servletResponse.addHeader("Content-Length", String.valueOf(bt.length));
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OutputStream servletOutputStream = servletResponse.getOutputStream();
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entity2.writeTo(servletOutputStream);
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}
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} else {
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if (!imageFlag && entity != null) {
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reader = new BufferedReader(new InputStreamReader(is));
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StringBuffer sb = new StringBuffer();
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String s = null;
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while ((s = reader.readLine()) != null) {
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sb.append(s);
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}
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String result = sb.toString();
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BasicHttpEntity entity2 = new BasicHttpEntity();
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if (result.indexOf("mpt") > -1 && result.indexOf("SkylineGlobe Server") > -1) {
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cn.hutool.json.JSONObject xmlobj = XML.toJSONObject(result);
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cn.hutool.json.JSONObject caps = (cn.hutool.json.JSONObject) xmlobj.get("Capabilities");
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JSONArray array = caps.getJSONArray("Contents");
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for (int i = 0; i < array.size(); i++) {
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cn.hutool.json.JSONObject temp = array.getJSONObject(i);
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if (temp.get("ows:Title").toString().contains(layer)) {
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array.remove(i);
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}
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}
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result = XML.toXml(xmlobj);
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} else {
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result = result.replaceAll("<table[^>]*>((?!table).)*</table>", "");
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result = result.replaceAll(
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"<a[^>]*>(ArcGIS JavaScript|ArcGIS Online map viewer|Google Earth|ArcMap|ArcGIS Explorer|ArcGIS.com Map)</a>",
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"");
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result = result.replaceAll("/arcgis/rest/services", "");
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result = result.replaceAll("(http|https)://[^/]+/", "/");
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entity2.setContentType(entity.getContentType());
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}
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byte[] bt;
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bt = result.getBytes();
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ByteArrayInputStream btinput = new ByteArrayInputStream(bt);
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entity2.setContent(btinput);
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entity2.setChunked(false);
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servletResponse.addHeader("Content-Length", String.valueOf(bt.length));
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OutputStream servletOutputStream = servletResponse.getOutputStream();
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entity2.writeTo(servletOutputStream);
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} else {
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if (entity != null) {
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OutputStream servletOutputStream = servletResponse.getOutputStream();
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entity.writeTo(servletOutputStream);
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}
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}
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}
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}
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public static byte[] compress(String str) {
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ByteArrayOutputStream out = new ByteArrayOutputStream();
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GZIPOutputStream gzip = null;
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try {
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gzip = new GZIPOutputStream(out);
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gzip.write(str.getBytes());
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} catch (IOException e) {
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e.printStackTrace();
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} finally {
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if (gzip != null) {
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try {
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gzip.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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return out.toByteArray();
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}
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public boolean isgzip(HttpEntity entity) {
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return entity.getContentEncoding() != null
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&& "Content-Encoding: gzip".equals(entity.getContentEncoding().toString()) ? true : false;
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}
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public boolean ishtml(HttpEntity entity) {
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String temp = entity.getContentType().toString();
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return temp.contains("text/html") ? true : false;
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}
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private void setXForwardedForHeader(HttpServletRequest servletRequest, HttpRequest proxyRequest) {
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String headerName = "X-Forwarded-For";
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if (this.doForwardIP) {
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String newHeader = servletRequest.getRemoteAddr();
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String existingHeader = servletRequest.getHeader(headerName);
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if (existingHeader != null) {
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newHeader = existingHeader + ", " + newHeader;
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}
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proxyRequest.setHeader(headerName, newHeader);
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}
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}
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protected void copyResponseHeaders(HttpResponse proxyResponse, HttpServletRequest servletRequest,
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HttpServletResponse servletResponse) {
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for (Header header : proxyResponse.getAllHeaders()) {
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if (!hopByHopHeaders.containsHeader(header.getName())) {
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if ((header.getName().equalsIgnoreCase("Set-Cookie"))
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|| (header.getName().equalsIgnoreCase("Set-Cookie2"))) {
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copyProxyCookie(servletRequest, servletResponse, header);
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} else {
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servletResponse.addHeader(header.getName(), header.getValue());
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System.out.print(header.getName() + header.getValue());
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}
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}
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}
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System.out.print(servletResponse.containsHeader("Content-Length"));
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}
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public static void main(String[] args) {
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cn.hutool.json.JSONObject json = new cn.hutool.json.JSONObject();
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json.put("info", "该信息不可展示");
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String t = XML.toXml(json);
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System.out.println(t);
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}
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}
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