Add login page.

[demoscenemusic.git] / src / main / java / net / pterodactylus / demoscenemusic / page / LoginPage.java

diff --git a/src/main/java/net/pterodactylus/demoscenemusic/page/LoginPage.java b/src/main/java/net/pterodactylus/demoscenemusic/page/LoginPage.java
new file mode 100644 (file)
index 0000000..0c30e28
--- /dev/null
+++ b/src/main/java/net/pterodactylus/demoscenemusic/page/LoginPage.java
@@ -0,0 +1,82 @@
+/*
+ * DemosceneMusic - LoginPage.java - Copyright © 2012 David Roden
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package net.pterodactylus.demoscenemusic.page;
+
+import net.pterodactylus.demoscenemusic.core.Core;
+import net.pterodactylus.demoscenemusic.data.User;
+import net.pterodactylus.util.database.DatabaseException;
+import net.pterodactylus.util.template.Template;
+import net.pterodactylus.util.template.TemplateContext;
+import net.pterodactylus.util.template.TemplateContextFactory;
+import net.pterodactylus.util.web.Method;
+import net.pterodactylus.util.web.RedirectException;
+
+/**
+ * Page that lets the user log in with his username and his password.
+ *
+ * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+ */
+public class LoginPage extends BasePage {
+
+       /**
+        * Creates a new login page.
+        *
+        * @param core
+        *            The core
+        * @param templateContextFactory
+        *            The template context factory
+        * @param template
+        *            The template to render
+        */
+       public LoginPage(Core core, TemplateContextFactory templateContextFactory, Template template) {
+               super(core, templateContextFactory, template, "login");
+       }
+
+       //
+       // BASEPAGE METHODS
+       //
+
+       /**
+        * {@inheritDoc}
+        */
+       @Override
+       protected void processTemplate(TemplateContext templateContext, ServletRequest request) throws RedirectException {
+               super.processTemplate(templateContext, request);
+               if (request.getMethod() == Method.POST) {
+                       String username = request.getServletRequest().getParameter("username");
+                       String password = request.getServletRequest().getParameter("password");
+                       try {
+                               User user = getCore().getDataManager().getUserByName(username);
+                               if (user == null) {
+                                       templateContext.set("error", "user-not-found");
+                                       return;
+                               }
+                               if (!user.verifyPassword(password)) {
+                                       templateContext.set("error", "invalid-password");
+                                       return;
+                               }
+                               /* credentials okay, log the user in. */
+                               request.getServletRequest().getSession().setAttribute("currentUser", user);
+                               throw new RedirectException(".");
+                       } catch (DatabaseException de1) {
+                               throw new RuntimeException("Could not load user from database.", de1);
+                       }
+               }
+       }
+
+}