From bd8a86e455cda9ff8847da219000a5837ff7aa4d Mon Sep 17 00:00:00 2001
From: Peter Hormanns <peter.hormanns@jalin.de>
Date: Tue, 17 Aug 2021 13:25:49 +0200
Subject: [PATCH] remove autoconfig

---
 hsarback/conf/WEB-INF/prod-web.xml            |  15 --
 .../AutoconfigAutodiscoverServlet.java        | 235 ------------------
 2 files changed, 250 deletions(-)
 delete mode 100644 hsarback/src/de/hsadmin/autoconfig/AutoconfigAutodiscoverServlet.java

diff --git a/hsarback/conf/WEB-INF/prod-web.xml b/hsarback/conf/WEB-INF/prod-web.xml
index e256f3e..88d62f7 100644
--- a/hsarback/conf/WEB-INF/prod-web.xml
+++ b/hsarback/conf/WEB-INF/prod-web.xml
@@ -44,11 +44,6 @@
 		<servlet-class>de.hsadmin.pillar.JsonPillarServlet</servlet-class>
 	</servlet>
 
-	<servlet>
-		<servlet-name>AutoconfigServlet</servlet-name>
-		<servlet-class>de.hsadmin.autoconfig.AutoconfigAutodiscoverServlet</servlet-class>
-	</servlet>
-
     <servlet-mapping>
         <servlet-name>Queue Status Servlet</servlet-name>
         <url-pattern>/queueStatus</url-pattern>
@@ -59,16 +54,6 @@
         <url-pattern>/pillar</url-pattern>
     </servlet-mapping>
 
-    <servlet-mapping>
-        <servlet-name>AutoconfigServlet</servlet-name>
-        <url-pattern>/config-v1.1.xml</url-pattern>
-    </servlet-mapping>
-
-    <servlet-mapping>
-        <servlet-name>AutoconfigServlet</servlet-name>
-        <url-pattern>/autodiscover.xml</url-pattern>
-    </servlet-mapping>
-
 	<!--
     <servlet-mapping>
         <servlet-name>Queue PacTasks Servlet</servlet-name>
diff --git a/hsarback/src/de/hsadmin/autoconfig/AutoconfigAutodiscoverServlet.java b/hsarback/src/de/hsadmin/autoconfig/AutoconfigAutodiscoverServlet.java
deleted file mode 100644
index f27e896..0000000
--- a/hsarback/src/de/hsadmin/autoconfig/AutoconfigAutodiscoverServlet.java
+++ /dev/null
@@ -1,235 +0,0 @@
-package de.hsadmin.autoconfig;
-
-import java.io.IOException;
-
-import javax.persistence.EntityManager;
-import javax.persistence.Query;
-import javax.servlet.ServletException;
-import javax.servlet.ServletInputStream;
-import javax.servlet.http.HttpServlet;
-import javax.servlet.http.HttpServletRequest;
-import javax.servlet.http.HttpServletResponse;
-import javax.xml.parsers.DocumentBuilder;
-import javax.xml.parsers.DocumentBuilderFactory;
-import javax.xml.parsers.ParserConfigurationException;
-import javax.xml.transform.Transformer;
-import javax.xml.transform.TransformerException;
-import javax.xml.transform.TransformerFactory;
-import javax.xml.transform.dom.DOMSource;
-import javax.xml.transform.stream.StreamResult;
-
-import org.apache.commons.httpclient.HttpStatus;
-import org.w3c.dom.DOMException;
-import org.w3c.dom.Document;
-import org.w3c.dom.Element;
-import org.w3c.dom.NodeList;
-import org.xml.sax.SAXException;
-
-import de.hsadmin.core.model.Transaction;
-import de.hsadmin.core.util.HSAdminException;
-import de.hsadmin.mods.email.EMailAddress;
-import de.hsadmin.mods.user.UnixUser;
-
-public class AutoconfigAutodiscoverServlet extends HttpServlet {
-
-	private static final long serialVersionUID = 1L;
-
-	/**
-	 * Thunderbird autoconfig 
-	 */
-	@Override
-	protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
-		final String emailAddr = req.getParameter("emailaddress");
-		if (emailAddr == null || emailAddr.length() == 0) {
-			resp.sendError(HttpStatus.SC_UNAUTHORIZED);
-			return;
-		}
-		final String[] addrParts = emailAddr.split("@");
-		if (addrParts.length != 2) {
-			resp.sendError(HttpStatus.SC_BAD_REQUEST);
-			return;
-		}
-		String uniqueMailbox = null;
-		try {
-			uniqueMailbox = getUniqueMailbox(emailAddr);
-		} catch (HSAdminException e) {
-			throw new ServletException(e);
-		}
-		final String pacName = uniqueMailbox.substring(0, 5);
-		final String pacDomain = pacName + ".hostsharing.net"; 
-		final String userName = uniqueMailbox;
-		try {
-			final DocumentBuilderFactory builderFactory = DocumentBuilderFactory.newInstance();
-			final DocumentBuilder builder = builderFactory.newDocumentBuilder();
-			final Document document = builder.newDocument();
-			final Element clientConfig = document.createElement("clientConfig");
-			clientConfig.setAttribute("version", "1.1");
-			document.appendChild(clientConfig);
-			final Element emailProvider = appendElementWithAttribute(document, clientConfig, "emailProvider", "id", "hostsharing.net");
-			appendElementWithText(document, emailProvider, "domain", "hostsharing.net");
-			final Element incomingServer = appendElementWithAttribute(document, emailProvider, "incomingServer", "type", "imap");
-			appendElementWithText(document, incomingServer, "hostname", pacDomain);
-			appendElementWithText(document, incomingServer, "port", "993");
-			appendElementWithText(document, incomingServer, "socketType", "SSL");
-			appendElementWithText(document, incomingServer, "username", userName);
-			appendElementWithText(document, incomingServer, "authentication", "password-cleartext");
-			final Element outgoingServer = appendElementWithAttribute(document, emailProvider, "outgoingServer", "type", "smtp");
-			appendElementWithText(document, outgoingServer, "hostname", pacDomain);
-			appendElementWithText(document, outgoingServer, "port", "465");
-			appendElementWithText(document, outgoingServer, "socketType", "SSL");
-			appendElementWithText(document, outgoingServer, "username", userName);
-			appendElementWithText(document, outgoingServer, "authentication", "password-cleartext");
-			appendElementWithText(document, outgoingServer, "addThisServer", "true");
-			appendElementWithText(document, outgoingServer, "useGlobalPreferredServer", "true");
-			serializeDocument(document, resp);
-		} catch (DOMException e) {
-			throw new ServletException(e);
-		} catch (ParserConfigurationException e) {
-			throw new ServletException(e);
-		}
-	}
-	
-	/**
-	 * Microsoft autodiscover
-	 */
-	@Override
-	protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
-		final ServletInputStream xmlInputStream = req.getInputStream();
-		try {
-			String emailAddr = "";
-			final DocumentBuilderFactory builderFactory = DocumentBuilderFactory.newInstance();
-			DocumentBuilder builder = builderFactory.newDocumentBuilder();
-			final Document requestDocument = builder.parse(xmlInputStream);
-			final Element documentElement = requestDocument.getDocumentElement();
-			documentElement.normalize();
-			final NodeList emailAddressNodeList = documentElement.getElementsByTagName("EMailAddress");
-			if (emailAddressNodeList.getLength() == 1) {
-				emailAddr = emailAddressNodeList.item(0).getTextContent().trim();
-			}
-			final String[] addrParts = emailAddr.split("@");
-			if (addrParts.length != 2) {
-				resp.sendError(HttpStatus.SC_BAD_REQUEST);
-				return;
-			}
-			String uniqueMailbox = null;
-			try {
-				uniqueMailbox = getUniqueMailbox(emailAddr);
-			} catch (HSAdminException e) {
-				throw new ServletException(e);
-			}
-			final Document document = buildAutodiscoverDocument(builderFactory, uniqueMailbox);
-			serializeDocument(document, resp);
-		} catch (ParserConfigurationException e) {
-			throw new ServletException(e);
-		} catch (SAXException e) {
-			throw new ServletException(e);
-		}
-	}
-
-	private static Document buildAutodiscoverDocument(final DocumentBuilderFactory builderFactory, String uniqueMailbox)
-			throws ParserConfigurationException {
-		DocumentBuilder builder;
-		final String pacName = uniqueMailbox.substring(0, 5);
-		final String pacDomain = pacName + ".hostsharing.net"; 
-		final String userName = uniqueMailbox;
-		builder = builderFactory.newDocumentBuilder();
-		final Document document = builder.newDocument();
-		final Element autodiscover = document.createElementNS("http://schemas.microsoft.com/exchange/autodiscover/responseschema/2006", "Autodiscover");
-		document.appendChild(autodiscover);
-		final Element response = document.createElementNS("http://schemas.microsoft.com/exchange/autodiscover/outlook/responseschema/2006a", "Response");
-		autodiscover.appendChild(response);
-		final Element account = document.createElement("Account");
-		response.appendChild(account);
-		appendElementWithText(document, account, "AccountType", "email");
-		appendElementWithText(document, account, "Action", "settings");
-		final Element protocolIMAP = document.createElement("Protocol");
-		account.appendChild(protocolIMAP);
-		appendElementWithText(document, protocolIMAP, "Type", "IMAP");
-		appendElementWithText(document, protocolIMAP, "Server", pacDomain);
-		appendElementWithText(document, protocolIMAP, "Port", "993");
-		appendElementWithText(document, protocolIMAP, "DomainRequired", "off");
-		appendElementWithText(document, protocolIMAP, "SPA", "off");
-		appendElementWithText(document, protocolIMAP, "SSL", "on");
-		appendElementWithText(document, protocolIMAP, "AuthRequired", "on");
-		appendElementWithText(document, protocolIMAP, "LoginName", userName);
-		final Element protocolSMTP = document.createElement("Protocol");
-		account.appendChild(protocolSMTP);
-		appendElementWithText(document, protocolSMTP, "Type", "SMTP");
-		appendElementWithText(document, protocolSMTP, "Server", pacDomain);
-		appendElementWithText(document, protocolSMTP, "Port", "465");
-		appendElementWithText(document, protocolSMTP, "DomainRequired", "off");
-		appendElementWithText(document, protocolSMTP, "SPA", "off");
-		appendElementWithText(document, protocolSMTP, "SSL", "on");
-		appendElementWithText(document, protocolSMTP, "AuthRequired", "on");
-		appendElementWithText(document, protocolSMTP, "LoginName", userName);
-		return document;
-	}
-	
-	private static Element appendElementWithAttribute(final Document document, final Element parent,
-			final String childElementName, final String attributeName, final String attributeValue) {
-		final Element child = document.createElement(childElementName);
-		child.setAttribute(attributeName, attributeValue);
-		parent.appendChild(child);
-		return child;
-	}
-	
-	private static Element appendElementWithText(final Document document, final Element parent, 
-			final String childElementName, final String text) {
-		final Element child = document.createElement(childElementName);
-		parent.appendChild(child);
-		child.appendChild(document.createTextNode(text));
-		return child;
-	}
-	
-	private static void serializeDocument(final Document document, final HttpServletResponse resp)
-			throws ServletException {
-		resp.setContentType("text/xml");
-		try {
-			final TransformerFactory transformerFactory = TransformerFactory.newInstance();
-			final Transformer transformer = transformerFactory.newTransformer();
-			transformer.transform(new DOMSource(document), new StreamResult(resp.getOutputStream()));
-		} catch (TransformerException e) {
-			throw new ServletException(e);
-		} catch (IOException e) {
-			throw new ServletException(e);
-		}
-	}
-	
-	private String getUniqueMailbox(final String email) throws HSAdminException {
-		final String[] addrParts = email.split("@");
-		if (addrParts.length != 2) {
-			throw new HSAdminException("email address not valid");
-		}
-		final String localpart = addrParts[0];
-		final String domain = addrParts[1];
-		final Transaction transaction = new Transaction("autoconfig");
-		final EntityManager em = transaction.getEntityManager();
-		final Query emailQuery = em.createQuery("SELECT addr FROM EMailAddresses addr "
-			+ "WHERE addr.localpart = :localpart AND addr.domain.name = :domain AND ( addr.subdomain IS NULL OR addr.subdomain = :subdomain)");
-		emailQuery.setParameter("subdomain", "");
-		emailQuery.setParameter("domain", domain);
-		emailQuery.setParameter("localpart", localpart);
-		final Object emailResult = emailQuery.getSingleResult();
-		if (emailResult == null) {
-			transaction.close();
-			throw new HSAdminException("email address unknown");
-		}
-		final EMailAddress emailAddress = (EMailAddress) emailResult;
-		final String target = emailAddress.getTarget();
-		if (target == null || target.length() < 5 || (target.length() > 6 && target.charAt(5) != '-')) {
-			transaction.close();
-			throw new HSAdminException("no unique mailbox found");
-		}
-		final Query mboxQuery = em.createQuery("SELECT mbox FROM UnixUsers mbox WHERE mbox.name = :target");
-		mboxQuery.setParameter("target", target);
-		final Object mboxResult = mboxQuery.getSingleResult();
-		if (mboxResult == null || !(mboxResult instanceof UnixUser)) {
-			transaction.close();
-			throw new HSAdminException("no unique mailbox found");
-		}
-		final UnixUser mbox = (UnixUser) mboxResult;
-		final String uniqueUsername = mbox.getName();
-		transaction.close();
-		return uniqueUsername;
-	}
-}