LogginHandler y RecursoProtegido - Estructura anhadida

ab9d7927 · Emanuel Lugo · 0dfb87a5 · ab9d7927 · ab9d7927
Commit ab9d7927 authored May 11, 2022 by Emanuel Lugo
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src/main/java/com/roshka/proyectofinal/LoginHandler.java
+48 -0

src/main/java/com/roshka/proyectofinal/ProtectedResource.java
+31 -0

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--- a/src/main/java/com/roshka/proyectofinal/LoginHandler.java
+++ b/src/main/java/com/roshka/proyectofinal/LoginHandler.java
+import java.io.*;
+import java.util.*;
+import javax.servlet.*;
+import javax.servlet.http.*;
+
+public class LoginHandler extends HttpServlet {
+
+    public void doPost(HttpServletRequest req, HttpServletResponse res)
+            throws ServletException, IOException {
+        res.setContentType("text/html");
+        PrintWriter out = res.getWriter();
+
+        // Get the user's name and password
+        String name = req.getParameter("name");
+        String passwd = req.getParameter("passwd");
+
+        // Check the name and password for validity
+        if (!allowUser(name, passwd)) {
+            out.println("&lt;HTML&gt;&lt;HEAD&gt;&lt;TITLE&gt;Access Denied&lt;/TITLE&gt;&lt;/HEAD&gt;");
+            out.println("&lt;BODY&gt;Your login and password are invalid.&lt;BR&gt;");
+            out.println("You may want to &lt;A HREF=\"/login.html\"&gt;try again&lt;/A&gt;");
+            out.println("&lt;/BODY&gt;&lt;/HTML&gt;");
+        }
+        else {
+            // Valid login. Make a note in the session object.
+            HttpSession session = req.getSession(true);
+            session.putValue("logon.isDone", name);  // just a marker object
+
+            // Try redirecting the client to the page he first tried to access
+            try {
+                String target = (String) session.getValue("login.target");
+                if (target != null)
+                    res.sendRedirect(target);
+                return;
+            }
+            catch (Exception ignored) { }
+
+            // Couldn't redirect to the target. Redirect to the site's home page.
+            res.sendRedirect(req.getScheme() + "://" +
+                    req.getServerName() + ":" + req.getServerPort());
+        }
+    }
+
+    protected boolean allowUser(String user, String passwd) {
+        return true;  // trust everyone
+    }
+}
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--- a/src/main/java/com/roshka/proyectofinal/ProtectedResource.java
+++ b/src/main/java/com/roshka/proyectofinal/ProtectedResource.java
+package com.roshka.proyectofinal;
+
+import java.io.*; 
+import java.util.*; 
+import javax.servlet.*; 
+import javax.servlet.http.*;
+
+public class ProtectedResource extends HttpServlet {
+
+	public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException { 
+			res.setContentType("text/plain");
+			PrintWriter out = res.getWriter();
+
+			// Get the session
+			HttpSession session = req.getSession(true);
+
+			// Does the session indicate this user already logged in?
+			Object done = session.getValue("logon.isDone");
+			// marker object
+			if (done == null) {
+				// No logon.isDone means he hasn't logged in. // Save the request URL as the true target and redirect to the login page
+				session.putValue("login.target",
+						HttpUtils.getRequestURL(req).toString()); res.sendRedirect(req.getScheme() + "://" + req.getServerName() + ":"
+							+ req.getServerPort() + "/login.html");
+				return;
+			}
+			// If we get here, the user has logged in and can see the goods
+			out.println("Unpublished O'Reilly book manuscripts await you!");
+		}
+	 }
\ No newline at end of file