From 4fa446ebc4f1ffd2229cfb1eaf04432cf257e8ac Mon Sep 17 00:00:00 2001
From: Jean-Philippe Orsini <orsinije@fr.ibm.com>
Date: Thu, 12 Oct 2017 13:14:09 +0200
Subject: [PATCH] redirect implemented

---
 war/pom.xml                                |  4 +-
 war/run.sh                                 | 13 +++++
 war/server.xml                             | 18 +++++++
 war/src/main/java/pnews/servlet/Pnews.java | 82 ++++++++++++++++++++++++++++++
 war/src/main/webapp/WEB-INF/web.xml        |  4 +-
 5 files changed, 117 insertions(+), 4 deletions(-)
 create mode 100755 war/run.sh
 create mode 100644 war/server.xml

diff --git a/war/pom.xml b/war/pom.xml
index 5ea3669..aaa43c7 100644
--- a/war/pom.xml
+++ b/war/pom.xml
@@ -1,10 +1,10 @@
 <project>
         <modelVersion>4.0.0</modelVersion>
         <groupId>pnews</groupId>
-        <artifactId>servlet</artifactId>
+        <artifactId>pnews</artifactId>
         <version>1.0</version>
         <packaging>war</packaging>
-        <name>servlet</name>
+        <name>pnews</name>
 
         <dependencies>
                 <dependency>
diff --git a/war/run.sh b/war/run.sh
new file mode 100755
index 0000000..7da6bb5
--- /dev/null
+++ b/war/run.sh
@@ -0,0 +1,13 @@
+#!/bin/bash
+
+SDIR=`dirname $0`
+SWAR=`realpath $SDIR/target/pnews-1.0.war`
+TMP_DIR="/tmp/$$.tmp"
+DWAR="$TMP_DIR/config/dropins/pnews-1.0.war"
+
+mkdir -p $TMP_DIR/config/dropins
+cp $SWAR $DWAR
+cp server.xml $TMP_DIR/config
+
+#docker run -ti --name pnews -p 9080:9080 -p 9443:9443 -v $DWAR:/config/dropins/pnews.war websphere-liberty:webProfile7
+docker run -ti --name pnews -p 9080:9080 -p 9443:9443 -v $TMP_DIR/config:/config websphere-liberty:webProfile7
diff --git a/war/server.xml b/war/server.xml
new file mode 100644
index 0000000..b5fc660
--- /dev/null
+++ b/war/server.xml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<server description="Default server">
+        <logging traceSpecification="*=audit:pnews.*=all:com.ibm.rules.res.execution=all" consoleLogLevel="INFO" />
+    <!-- Enable features -->
+    <featureManager>
+        <feature>webProfile-7.0</feature>
+    </featureManager>
+
+    <!-- To allow access to this server from a remote client host="*" has been added to the following element -->
+    <httpEndpoint id="defaultHttpEndpoint"
+                  host="*"
+		  httpPort="9080"
+                  httpsPort="9443" />
+
+    <!-- Automatically expand WAR files and EAR files -->
+    <applicationManager autoExpand="true"/>
+
+</server>
diff --git a/war/src/main/java/pnews/servlet/Pnews.java b/war/src/main/java/pnews/servlet/Pnews.java
index 85f726b..f7175a1 100644
--- a/war/src/main/java/pnews/servlet/Pnews.java
+++ b/war/src/main/java/pnews/servlet/Pnews.java
@@ -1,7 +1,89 @@
 package pnews.servlet;
 
+import java.io.IOException;
+import java.io.UnsupportedEncodingException;
+import java.net.URLDecoder;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import javax.servlet.ServletConfig;
+import javax.servlet.ServletException;
 import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
 
 public class Pnews extends HttpServlet {
+        private static final Logger LOG = Logger.getLogger(Pnews.class.getName());
+        private static final long serialVersionUID = 1L;
+
+        private static String getQueryParameter(HttpServletRequest rq, String key)
+                        throws UnsupportedEncodingException {
+                String[] params;
+                int idx;
+                String q;
+                
+                q = rq.getQueryString();
+                
+                if (q == null)
+                        return null;
+                
+                params = URLDecoder.decode(q, "UTF-8").split("&");
+                
+                for (String p: params) {                        
+                        idx = p.indexOf('=');
+                                                
+                        if (idx > 1 && p.substring(0, idx).equals(key))
+                                return p.substring(idx + 1);
+                }
+                
+                return null;
+        }
+        
+        private static void redirect(HttpServletRequest rq, HttpServletResponse rp) {
+                String redirectURL;
+                
+                try {
+                        redirectURL = getQueryParameter(rq, "url");
+                                               
+                        LOG.info("Request redirection to " + redirectURL);
+                        
+                        if (redirectURL != null) {
+                                rp.setHeader("Location", redirectURL);
+                                rp.setStatus(HttpServletResponse.SC_TEMPORARY_REDIRECT);
+                        } else {
+                                rp.setStatus(HttpServletResponse.SC_NOT_FOUND);
+                        }
+
+                } catch (UnsupportedEncodingException e) {
+                        e.printStackTrace();
+                        LOG.log(Level.SEVERE, "redirect failure", e);
+                        rp.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
+                }                
+        }
+        
+        @Override
+        protected void  doGet(HttpServletRequest req, HttpServletResponse resp) {
+                String path;
+                
+                LOG.info("doGet " + req.getRequestURI());
 
+                path = req.getPathInfo();
+                
+                if (path.equals("/redirect")) {
+                        redirect(req, resp);
+                } else {
+                        try {
+                                resp.getWriter().write("Not found " + req.getPathInfo());
+                                resp.setStatus(HttpServletResponse.SC_NOT_FOUND);
+                        } catch (IOException e) {
+                                LOG.log(Level.SEVERE, "doGet failure", e);
+                        }
+                }
+        }
+        
+        @Override
+        public void init(ServletConfig config) throws ServletException {
+                LOG.info("Pnews servlet init " + config.getServletContext().getContextPath());
+                
+        }
 }
diff --git a/war/src/main/webapp/WEB-INF/web.xml b/war/src/main/webapp/WEB-INF/web.xml
index e56581e..80d7c74 100644
--- a/war/src/main/webapp/WEB-INF/web.xml
+++ b/war/src/main/webapp/WEB-INF/web.xml
@@ -7,12 +7,12 @@
     <display-name>Pnews</display-name>
     <servlet>
             <servlet-name>pnews</servlet-name>
-            <servlet-class>pnew.servlet.Pnews</servlet-class>
+            <servlet-class>pnews.servlet.Pnews</servlet-class>
             <load-on-startup>1</load-on-startup>
     </servlet>
 
     <servlet-mapping>
             <servlet-name>pnews</servlet-name>
-            <url-pattern>/pnews</url-pattern>
+            <url-pattern>/*</url-pattern>
     </servlet-mapping>
 </web-app>
-- 
2.7.4