Login working and commented.
Logout working and commented but not linked. Authentication working and commented.
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edgar
parent
ba1ee2d06c
commit
398909615e
@ -0,0 +1,66 @@
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package de.hsel.spm.baudas.web;
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import java.io.IOException;
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import javax.servlet.Filter;
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import javax.servlet.FilterChain;
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import javax.servlet.FilterConfig;
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import javax.servlet.ServletContext;
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import javax.servlet.ServletException;
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import javax.servlet.ServletRequest;
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import javax.servlet.ServletResponse;
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import javax.servlet.annotation.WebFilter;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import javax.servlet.http.HttpSession;
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/**
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* Filter implementation class AuthenticationFilter.
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*
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* @author Edgar Schkrob
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*/
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@WebFilter(urlPatterns = {"/*"})
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public class AuthenticationFilter implements Filter{
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private ServletContext context;
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/**
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* Called by the web container to indicate to a filter that it is being placed into service.
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* @param fConfig This parameter provides access to everything the code needs to work.
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* @throws ServletException Defines a general exception a servlet can throw when it encounters difficulty.
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*/
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public void init(FilterConfig fConfig) throws ServletException {
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this.context = fConfig.getServletContext();
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this.context.log("AuthenticationFilter initialized");
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}
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/**
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* The doFilter method of the Filter is called by the container each time a request/response pair is passed through the chain due to a client request for a resource at the end of the chain.
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* @param request This parameter provides access to everything the code needs to work.
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* @param response This parameter provides access to everything the code needs to issue a response.
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* @param chain This parameter allows passing request along the chain of potential handlers until one of them handles the request.
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* @throws ServletException Defines a general exception a servlet can throw when it encounters difficulty.
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* @throws IOException Signals that an I/O exception of some sort has occurred. This class is the general class of exceptions produced by failed or interrupted I/O operations.
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*/
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public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
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HttpServletRequest req = (HttpServletRequest) request;
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HttpServletResponse res = (HttpServletResponse) response;
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HttpSession session = req.getSession(false);
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String url = req.getRequestURI();
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if(url.contains("login") || url.contains("logo") || url.contains("js/")){
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chain.doFilter(request, response);
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} else if (session == null || !((boolean) session.getAttribute("authentication"))) { //checking whether the session exists and if authentication succeded
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this.context.log("Unauthorized access request");
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res.sendRedirect(req.getContextPath() + "/login.html");
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} else {
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chain.doFilter(request, response);
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}
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}
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public void destroy() {
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//close any resources here
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}
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}
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@ -6,41 +6,36 @@ import java.io.PrintWriter;
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import javax.servlet.RequestDispatcher;
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import javax.servlet.ServletException;
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import javax.servlet.annotation.WebServlet;
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import javax.servlet.http.Cookie;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import javax.servlet.http.HttpSession;
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@WebServlet("/LoginServlet")
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/**
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* Servlet implementation class LoginServlet.
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*
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* @author Edgar Schkrob
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*/
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@WebServlet("/login")
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public class LoginServlet extends HttpServlet {
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//private final String username = "admin";
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private final String password = "password";
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private final String password = "SPM2019SS";
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/**
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* This is a Servlet that manages the Login and creates Sessions.
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* @param request This parameter provides access to everything the code needs to work.
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* @param response This parameter provides access to everything the code needs to issue a response.
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* @throws ServletException Defines a general exception a servlet can throw when it encounters difficulty.
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* @throws IOException Signals that an I/O exception of some sort has occurred. This class is the general class of exceptions produced by failed or interrupted I/O operations.
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*/
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protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
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// get request parameters for username and password
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//String username = request.getParameter("username");
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String password = request.getParameter("pwd");
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//if (this.username.equals(username) && this.password.equals(password)) {
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if (this.password.equals(password)) {
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//get the old session and invalidate
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HttpSession oldSession = request.getSession(false);
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if (oldSession != null) {
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oldSession.invalidate();
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}
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//generate a new session
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HttpSession newSession = request.getSession(true);
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//setting session to expiry in 5 mins
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newSession.setMaxInactiveInterval(5*60);
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Cookie message = new Cookie("message", "Welcome");
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response.addCookie(message);
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response.sendRedirect("/index.jsp");
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newSession.setAttribute("authentication", true);
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newSession.setMaxInactiveInterval(5*60*60); //setting session to expiry in 5 hours
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response.sendRedirect("index.jsp");
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} else {
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RequestDispatcher rd = getServletContext().getRequestDispatcher("/login.html");
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PrintWriter out = response.getWriter();
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@ -2,7 +2,6 @@ package de.hsel.spm.baudas.web;
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import java.io.IOException;
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import javax.servlet.ServletException;
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import javax.servlet.annotation.WebServlet;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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@ -10,18 +9,26 @@ import javax.servlet.http.HttpServletResponse;
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import javax.servlet.http.HttpSession;
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/**
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* Servlet implementation class LogoutServlet
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* Servlet implementation class LogoutServlet.
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*
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* @author Edgar Schkrob
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*/
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@WebServlet("/web/LogoutServlet")
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@WebServlet("/logout")
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public class LogoutServlet extends HttpServlet {
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protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
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/**
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* This is a Servlet that manages the Logout and deletes Sessions.
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* @param request This parameter provides access to everything the code needs to work.
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* @param response This parameter provides access to everything the code needs to issue a response.
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* @throws IOException Signals that an I/O exception of some sort has occurred. This class is the general class of exceptions produced by failed or interrupted I/O operations.
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*/
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//invalidate the session if exists
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protected void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
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HttpSession session = request.getSession(false);
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if(session != null){
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session.invalidate();
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}
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response.sendRedirect(request.getContextPath() + "/loginPage.html");
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response.sendRedirect(request.getContextPath() + "/");
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}
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}
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@ -18,14 +18,14 @@
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<div class="card white col s6 push-s3">
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<div class="card-content">
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<div class="center">
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<img style="width: 50%" src="../logoOrginal.gif">
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<img style="width: 50%" src="logoOrginal.gif">
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</div>
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<div class="divider"></div>
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<div class="row">
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<div class="col s8 push-s2">
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<form action="LoginServlet" method="post">
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<input id="password" type="password" class="validate" placeholder="Passwort">
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<form action="login" method="post">
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<input id="password" type="password" class="validate" placeholder="Passwort" name="password">
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<input class="white-text btn blue-grey lighten-2" type="submit" value="Login">
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</form>
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</div>
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@ -29,11 +29,11 @@
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<div class="nav-wrapper col 2 right">
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<ul class="right hide-on-med-and-down">
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<li><a data-target="slide-out" class="sidenav-trigger show-on-large"><i class="material-icons left">menu</i>Menü</a></li><!--Sidenav-->
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<li><a href="login.html"><i class="material-icons left">person_outline</i>Logout</a></li><!--Logout-->
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<li><a href="../login.html"><i class="material-icons left">person_outline</i>Logout</a></li><!--Logout-->
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</ul>
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<ul class="right">
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<li><a href="#" data-target="slide-out" class="sidenav-trigger"><i class="material-icons">menu</i></a></li><!--Sidenav-->
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<li><a href="login.html" class="sidenav-trigger"><i class="material-icons">person_outline</i></a></li><!--Logout-->
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<li><a href="../login.html" class="sidenav-trigger"><i class="material-icons">person_outline</i></a></li><!--Logout-->
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</ul>
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</div>
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</nav>
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@ -37,7 +37,7 @@
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</div>
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<div class="card-action right">
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<a href="#">Bestätigen</a>
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<a href="login.html">Zurück</a>
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<a href="../login.html">Zurück</a>
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</div>
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</div>
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</div>
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