working on sending mails: prerequisite mail configuration in progress

Signed-off-by: Stephan Richter <s.richter@srsoftware.de>

de.srsoftware.oidc.backend/build.gradle

@@ -18,6 +18,8 @@ dependencies {
     implementation project(':de.srsoftware.utils')
     implementation 'org.json:json:20240303'
     implementation 'org.bitbucket.b_c:jose4j:0.9.6'
+    implementation 'com.sun.mail:jakarta.mail:2.0.1'
+
 }
 
 test {

de.srsoftware.oidc.backend/src/main/java/de/srsoftware/oidc/backend/EmailController.java

@@ -0,0 +1,38 @@
+/* © SRSoftware 2024 */
+package de.srsoftware.oidc.backend;
+
+import static de.srsoftware.oidc.api.data.Permission.MANAGE_SMTP;
+import static java.net.HttpURLConnection.HTTP_FORBIDDEN;
+import static java.net.HttpURLConnection.HTTP_UNAUTHORIZED;
+
+import com.sun.net.httpserver.HttpExchange;
+import de.srsoftware.oidc.api.MailConfig;
+import de.srsoftware.oidc.api.SessionService;
+import de.srsoftware.oidc.api.data.User;
+import java.io.IOException;
+
+public class EmailController extends Controller {
+	private final MailConfig mailConfig;
+
+	public EmailController(MailConfig mailConfig, SessionService sessionService) {
+		super(sessionService);
+		this.mailConfig = mailConfig;
+	}
+
+	@Override
+	public boolean doGet(String path, HttpExchange ex) throws IOException {
+		var optSession = getSession(ex);
+		if (optSession.isEmpty()) return sendEmptyResponse(HTTP_UNAUTHORIZED, ex);
+		var user = optSession.get().user();
+		switch (path) {
+			case "/settings":
+				return provideSettings(ex, user);
+		}
+		return notFound(ex);
+	}
+
+	private boolean provideSettings(HttpExchange ex, User user) throws IOException {
+		if (!user.hasPermission(MANAGE_SMTP)) return sendEmptyResponse(HTTP_FORBIDDEN, ex);
+		return sendContent(ex, mailConfig.map());
+	}
+}

de.srsoftware.oidc.backend/src/main/java/de/srsoftware/oidc/backend/UserController.java

@@ -12,17 +12,28 @@ import de.srsoftware.http.SessionToken;
 import de.srsoftware.oidc.api.*;
 import de.srsoftware.oidc.api.data.Session;
 import de.srsoftware.oidc.api.data.User;
+import jakarta.mail.*;
+import jakarta.mail.internet.*;
 import java.io.IOException;
 import java.util.Map;
 import java.util.Optional;
 import org.json.JSONObject;
 
 public class UserController extends Controller {
-	private final UserService users;
+	private final UserService   users;
+	private final MailConfig    mailConfig;
+	private final Authenticator auth;
 
-	public UserController(SessionService sessionService, UserService userService) {
+	public UserController(MailConfig mailConfig, SessionService sessionService, UserService userService) {
 		super(sessionService);
-		users = userService;
+		users	= userService;
+		this.mailConfig = mailConfig;
+		auth	= new Authenticator() {
+			           // override the getPasswordAuthentication method
+			           protected PasswordAuthentication getPasswordAuthentication() {
+				           return new PasswordAuthentication(mailConfig.senderAddress(), mailConfig.senderPassword());
+			           }
+		};
 	}
 
 	private boolean addUser(HttpExchange ex, Session session) throws IOException {
@@ -115,6 +126,29 @@ public class UserController extends Controller {
 
 	private void senPasswordLink(User user) {
 		LOG.log(WARNING, "Sending password link to {0}", user.email());
+		try {
+			var     session = jakarta.mail.Session.getDefaultInstance(mailConfig.props(), auth);
+			Message message = new MimeMessage(session);
+			message.setFrom(new InternetAddress(mailConfig.senderAddress()));
+			message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(user.email()));
+			message.setSubject("Mail Subject");
+
+			String msg = "This is my first email using JavaMailer";
+
+			MimeBodyPart mimeBodyPart = new MimeBodyPart();
+			mimeBodyPart.setContent(msg, "text/html; charset=utf-8");
+
+			Multipart multipart = new MimeMultipart();
+			multipart.addBodyPart(mimeBodyPart);
+
+			message.setContent(multipart);
+
+			Transport.send(message);
+		} catch (AddressException e) {
+			throw new RuntimeException(e);
+		} catch (MessagingException e) {
+			throw new RuntimeException(e);
+		}
 	}
 
 	private boolean sendUserAndCookie(HttpExchange ex, Session session) throws IOException {