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Authentication Example #73

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Authentication Example #73

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176f942
Create authentication example
chanakas1995 Aug 15, 2021
05f6c73
Create session base authentication
chanakas1995 Aug 29, 2021
6207896
Merge branch 'master' of https://github.com/keizer619/icbt-22 into ma…
chanakas1995 Aug 29, 2021
c003a6c
Merge branch 'master' of https://github.com/keizer619/icbt-22 into ma…
chanakas1995 Oct 2, 2021
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47 changes: 42 additions & 5 deletions CL-BSCSD-22-03/my-web-app1/src/main/java/oop/Utill.java
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Original file line number Diff line number Diff line change
Expand Up @@ -5,22 +5,59 @@
*/
package oop;

import java.net.HttpCookie;
import java.util.ArrayList;
import java.util.List;
import java.util.UUID;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
*
* @author Chanaka
*/
public class Utill {

public List<Person> getPersons() {
public static List<Person> getPersons() {
List<Person> persons = new ArrayList<>();
persons.add(new Person("Roshan","54657","0715236589","1990-05-26","Male"));
persons.add(new Person("Amali","98414","0774582658","1986-08-15","Female"));
persons.add(new Person("Sudath","63874","0782463598","1970-04-02","Male"));
persons.add(new Person("Hasini","25896","0725896354","1991-10-20","Female"));
persons.add(new Person("Roshan", "54657", "0715236589", "1990-05-26", "Male"));
persons.add(new Person("Amali", "98414", "0774582658", "1986-08-15", "Female"));
persons.add(new Person("Sudath", "63874", "0782463598", "1970-04-02", "Male"));
persons.add(new Person("Hasini", "25896", "0725896354", "1991-10-20", "Female"));
return persons;
}

public static boolean authenticate(HttpServletRequest request, HttpServletResponse response, HttpSession session) {
String username = request.getParameter("username");
String password = request.getParameter("password");
if ((username != null) && (password != null) && (username.equals("admin")) && (password.equals("123"))) {
String newSessionId = UUID.randomUUID().toString();
session.setAttribute("session_id", newSessionId);
Cookie newCookie = new Cookie("session_id", newSessionId);
response.addCookie(newCookie);
return true;
} else {
try {
Cookie sessionCookie = null;
Cookie[] cookies = request.getCookies();
for (Cookie cookie : cookies) {
if (cookie.getName().equals("session_id")) {
sessionCookie = cookie;
}
}
if (sessionCookie != null) {
String sessionId = session.getAttribute("session_id").toString();
if (sessionId.equals(sessionCookie.getValue())) {
return true;
}
}
return false;
} catch (NullPointerException e) {
return false;
}
}
}

}
24 changes: 20 additions & 4 deletions CL-BSCSD-22-03/my-web-app1/src/main/webapp/index.jsp
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Expand Up @@ -14,6 +14,10 @@
<title>JSP Page</title>
</head>
<body>
<%

if (Utill.authenticate(request, response, session)) {
%>
<table border="1">
<thead>
<tr>
Expand All @@ -26,18 +30,30 @@
</thead>
<tbody>
<%
Utill utill = new Utill();
for (Person p : utill.getPersons()) {
for (Person p : Utill.getPersons()) {
%>
<tr>
<td><%= p.getNic()%></td>
<td><%= p.getName() %></td>
<td><%= p.getName()%></td>
<td><%= p.getDateOfBirth()%></td>
<td><%= p.getGender()%></td>
<td><%= p.getMobile()%></td>
</tr>
<% } %>
<%
}
%>
</tbody>
</table>
<br>
<br>
<br>
<form action="logout.jsp" method="POST">
<input type="submit" value="Logout" />
</form>
<%
} else {
response.sendRedirect("login.jsp");
}
%>
</body>
</html>
32 changes: 32 additions & 0 deletions CL-BSCSD-22-03/my-web-app1/src/main/webapp/login.jsp
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@@ -0,0 +1,32 @@
<%--
Document : login
Created on : Aug 15, 2021, 4:59:23 PM
Author : Chanaka
--%>

<%@page import="oop.Utill"%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<%
if (Utill.authenticate(request, response, session)) {
response.sendRedirect("./");
} else {
%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body>
<form action="index.jsp" method="POST">
<label>Username :</label>
<input type="text" name="username"><br/>
<label>Password :</label>
<input type="password" name="password"><br/>
<input type="submit" value="Login">
</form>
</body>
</html>
<%
}
%>
10 changes: 10 additions & 0 deletions CL-BSCSD-22-03/my-web-app1/src/main/webapp/logout.jsp
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@@ -0,0 +1,10 @@
<%--
Document : logout.jsp
Created on : Aug 29, 2021, 12:17:48 PM
Author : Chanaka
--%>

<%
session.invalidate();
response.sendRedirect("./login.jsp");
%>