working on oidc auth

src/main/java/de/srsoftware/widerhall/mail/SmtpClient.java

@@ -0,0 +1,59 @@
+package de.srsoftware.widerhall.mail;
+
+import org.json.simple.JSONObject;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import javax.mail.*;
+import javax.mail.internet.InternetAddress;
+import javax.mail.internet.MimeMessage;
+import java.io.UnsupportedEncodingException;
+import java.util.Date;
+import java.util.Map;
+import java.util.Properties;
+
+public class SmtpClient {
+    private static final Logger LOG = LoggerFactory.getLogger(SmtpClient.class);
+    private static final String HOST = "mail.smtp.host";
+    private static final String PORT = "mail.smtp.port";
+    private static final String AUTH = "mail.smtp.auth";
+    private static final String SSL = "mail.smtp.ssl.enable";
+    private static final String UTF8 = "UTF-8";
+
+    private Session session;
+
+    public SmtpClient(Map<String,Object> config){
+        String host = (String) config.get("host");
+        long port = (long) config.get("port");
+        Properties props = new Properties();
+        props.put(HOST,host);
+        props.put(PORT,port);
+        props.put(AUTH,true);
+        props.put(SSL,true);
+
+        session = Session.getInstance(props);
+        LOG.debug("Created new {}: {}", getClass().getSimpleName(),session);
+    }
+
+    public void send(JSONObject config, String senderAdress, String senderName, String receivers, String subject, String content) throws MessagingException, UnsupportedEncodingException {
+        MimeMessage message = new MimeMessage(session);
+        message.addHeader("Content-Type","text/plain; charset="+UTF8);
+        message.addHeader("format","flowed");
+        message.addHeader("Content-Transfer-Encoding","8bit");
+
+        message.setFrom(new InternetAddress(senderAdress,senderName));
+        message.setReplyTo(InternetAddress.parse(senderAdress,false));
+        message.setSubject(subject,UTF8);
+        message.setText(content,UTF8);
+        message.setSentDate(new Date());
+        message.setRecipients(Message.RecipientType.TO,InternetAddress.parse(receivers,false));
+
+        String username = (String) config.get("user");
+        String password = (String) config.get("password");
+
+        LOG.debug("Versende Mail…");
+        Transport.send(message,username,password);
+        LOG.debug("…versendet");
+    }
+
+}