initial commit

core/src/main/java/de/bstly/we/CoreConfiguration.java

@@ -0,0 +1,30 @@
+/**
+ * 
+ */
+package de.bstly.we;
+
+import javax.persistence.EntityManager;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import com.querydsl.jpa.impl.JPAQueryFactory;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@Configuration
+public class CoreConfiguration {
+
+	@Autowired
+	private EntityManager em;
+
+	@Bean
+	public JPAQueryFactory jpaQueryFactory() {
+		return new JPAQueryFactory(em);
+	}
+
+}

core/src/main/java/de/bstly/we/businesslogic/PermissionManager.java

@@ -0,0 +1,369 @@
+/**
+ * 
+ */
+package de.bstly.we.businesslogic;
+
+import java.time.Instant;
+import java.time.OffsetDateTime;
+import java.time.format.DateTimeFormatter;
+import java.util.List;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+import org.springframework.util.Assert;
+import org.springframework.util.StringUtils;
+
+import com.google.common.collect.Lists;
+import com.google.gson.JsonArray;
+import com.google.gson.JsonElement;
+
+import de.bstly.we.businesslogic.support.InstantHelper;
+import de.bstly.we.model.Permission;
+import de.bstly.we.model.PermissionMapping;
+import de.bstly.we.model.QPermission;
+import de.bstly.we.model.UserData;
+import de.bstly.we.repository.PermissionRepository;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@Component
+public class PermissionManager implements UserDataProvider {
+
+	@Autowired
+	private PermissionRepository permissionRepository;
+	@Autowired
+	private PermissionMappingManager permissionMappingManager;
+	private QPermission qPermission = QPermission.permission;
+
+	DateTimeFormatter pretixOffsetDateTime = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ssx");
+
+	/**
+	 * 
+	 * @param target
+	 * @param name
+	 * @return
+	 */
+	public List<Permission> get(Long target, String name) {
+		if (target != null) {
+			return Lists.newArrayList(permissionRepository
+					.findAll(qPermission.name.eq(name).and(qPermission.target.eq(target))));
+		}
+		return Lists.newArrayList();
+	}
+
+	/**
+	 * 
+	 * @param target
+	 * @return
+	 */
+	public List<Permission> getAllByTarget(Long target) {
+		if (target != null) {
+			return Lists.newArrayList(permissionRepository.findAll(qPermission.target.eq(target)));
+		}
+		return Lists.newArrayList();
+	}
+
+	/**
+	 * 
+	 * @param target
+	 * @return
+	 */
+	public List<Permission> getNotExpiresByTarget(Long target) {
+		if (target != null) {
+			return Lists.newArrayList(permissionRepository.findAll(qPermission.target.eq(target)
+					.and(qPermission.expires.after(Instant.now()).and(qPermission.starts.isNull()
+							.or(qPermission.starts.before(Instant.now()))))));
+		}
+		return Lists.newArrayList();
+	}
+
+	/**
+	 * 
+	 * @param name
+	 * @return
+	 */
+	public List<Permission> getNotExpiresByName(String name) {
+		if (name != null) {
+			return Lists.newArrayList(permissionRepository.findAll(qPermission.name.eq(name)
+					.and(qPermission.expires.after(Instant.now()).and(qPermission.starts.isNull()
+							.or(qPermission.starts.before(Instant.now()))))));
+		}
+		return Lists.newArrayList();
+	}
+
+	/**
+	 * 
+	 * @param target
+	 * @return
+	 */
+	public List<Permission> getNotExpiresByTargetIgnoreStart(Long target) {
+		if (target != null) {
+			return Lists.newArrayList(permissionRepository.findAll(
+					qPermission.target.eq(target).and(qPermission.expires.after(Instant.now()))));
+		}
+		return Lists.newArrayList();
+	}
+
+	/**
+	 * 
+	 * @param target
+	 * @return
+	 */
+	public boolean isFullUser(Long target) {
+		return permissionRepository.exists(qPermission.target.eq(target)
+				.and(qPermission.addon.isFalse()).and(qPermission.expires.after(Instant.now()).and(
+						qPermission.starts.isNull().or(qPermission.starts.before(Instant.now())))));
+	}
+
+	/**
+	 * 
+	 * @param target
+	 * @param name
+	 * @return
+	 */
+	public boolean hasPermission(Long target, String name) {
+		if (!Permissions.ROLE_ADMIN.equals(name) && hasPermission(target, Permissions.ROLE_ADMIN)) {
+			return true;
+		}
+
+		return target != null && permissionRepository.exists(qPermission.name.eq(name)
+				.and(qPermission.target.eq(target))
+				.and(qPermission.expires.after(Instant.now()).and(
+						qPermission.starts.isNull().or(qPermission.starts.before(Instant.now())))));
+	}
+
+	/**
+	 * 
+	 * @param target
+	 * @param name
+	 * @param addon
+	 * @param expires
+	 * @return
+	 */
+	public Permission create(Long target, String name, boolean addon, Instant starts,
+			Instant expires) {
+		Permission newPermission = new Permission();
+		newPermission.setTarget(target);
+		newPermission.setName(name);
+		newPermission.setAddon(addon);
+		newPermission.setStarts(starts);
+		newPermission.setExpires(expires);
+
+		return permissionRepository.save(newPermission);
+	}
+
+	/**
+	 * 
+	 * @param permission
+	 * @return
+	 */
+	public Permission update(Permission permission) {
+		Assert.isTrue(
+				permissionRepository.exists(qPermission.target.eq(permission.getTarget())
+						.and(qPermission.name.eq(permission.getName()))),
+				"Permission '" + permission.getName() + "' for target + '" + permission.getTarget()
+						+ "' not exists!");
+		Permission updatePermission = permissionRepository.findOne(qPermission.target
+				.eq(permission.getTarget()).and(qPermission.name.eq(permission.getName()))).get();
+		updatePermission.setStarts(permission.getStarts());
+		updatePermission.setExpires(permission.getExpires());
+		updatePermission.setAddon(permission.isAddon());
+		return permissionRepository.save(updatePermission);
+	}
+
+	/**
+	 * 
+	 * @param name
+	 * @param clone
+	 * @return
+	 */
+	public List<Permission> clone(String name, String clone) {
+		List<Permission> permissions = Lists.newArrayList();
+
+		for (Permission permission : permissionRepository
+				.findAll(qPermission.name.eq(name).and(qPermission.expires.after(Instant.now())))) {
+			if (!permissionRepository.exists(
+					qPermission.name.eq(clone).and(qPermission.target.eq(permission.getTarget()))
+							.and(qPermission.expires.goe(permission.getExpires())))) {
+				permissions.add(create(permission.getTarget(), clone, permission.isAddon(),
+						permission.getStarts(), permission.getExpires()));
+			}
+		}
+
+		return permissions;
+	}
+
+	/**
+	 * 
+	 * @param target
+	 * @param name
+	 */
+	public void delete(Long target, String name) {
+		Assert.isTrue(
+				permissionRepository
+						.exists(qPermission.target.eq(target).and(qPermission.name.eq(name))),
+				"Permission '" + name + "' for target + '" + target + "' not exists!");
+		Permission delete = permissionRepository
+				.findOne(qPermission.target.eq(target).and(qPermission.name.eq(name))).get();
+		permissionRepository.delete(delete);
+	}
+
+	/**
+	 * 
+	 * @param target
+	 */
+	public void deleteAll(Long target) {
+		permissionRepository.deleteAll(permissionRepository.findAll(qPermission.target.eq(target)));
+	}
+
+	/**
+	 * 
+	 * @param name
+	 */
+	public void deleteAll(String name) {
+		permissionRepository.deleteAll(permissionRepository.findAll(qPermission.name.eq(name)));
+	}
+
+	/**
+	 * 
+	 * @param target
+	 * @param item
+	 * @param answers
+	 */
+	public void applyItem(Long target, Integer item, JsonArray answers, Instant start) {
+		for (Permission permission : getForItem(target, item, answers, start)) {
+			permissionRepository.save(permission);
+		}
+	}
+
+	/**
+	 * 
+	 * @param target
+	 * @param item
+	 * @param answers
+	 * @return
+	 */
+	public List<Permission> getForItem(Long target, Integer item, JsonArray answers,
+			Instant start) {
+		List<Permission> permissions = Lists.newArrayList();
+
+		if (start == null) {
+			start = Instant.now();
+		}
+
+		for (PermissionMapping permissionMapping : permissionMappingManager.getAllByItem(item)) {
+			for (String name : permissionMapping.getNames()) {
+				Instant starts = null;
+				Instant expires = InstantHelper.plus(start, permissionMapping.getLifetime(),
+						permissionMapping.getLifetimeUnit());
+
+				boolean additional = true;
+
+				for (JsonElement anwser : answers) {
+					if (anwser.isJsonObject()
+							&& anwser.getAsJsonObject().has("question_identifier")) {
+						if (StringUtils.hasText(permissionMapping.getStartsQuestion())
+								&& permissionMapping.getStartsQuestion()
+										.equals(anwser.getAsJsonObject().get("question_identifier")
+												.getAsString())
+								&& anwser.getAsJsonObject().has("answer")) {
+							String dateTimeString = anwser.getAsJsonObject().get("answer")
+									.getAsString();
+							if (StringUtils.hasText(dateTimeString)) {
+								dateTimeString = dateTimeString.replace(" ", "T");
+								starts = OffsetDateTime.parse(dateTimeString).toInstant();
+								expires = InstantHelper.plus(starts,
+										permissionMapping.getLifetime(),
+										permissionMapping.getLifetimeUnit());
+								additional = false;
+							}
+						}
+
+						if (StringUtils.hasText(permissionMapping.getExpiresQuestion())
+								&& permissionMapping.getExpiresQuestion()
+										.equals(anwser.getAsJsonObject().get("question_identifier")
+												.getAsString())
+								&& anwser.getAsJsonObject().has("answer")) {
+							String dateTimeString = anwser.getAsJsonObject().get("answer")
+									.getAsString();
+							if (StringUtils.hasText(dateTimeString)) {
+								dateTimeString = dateTimeString.replace(" ", "T");
+								expires = InstantHelper.plus(
+										OffsetDateTime.parse(dateTimeString).toInstant(),
+										permissionMapping.getLifetime(),
+										permissionMapping.getLifetimeUnit());
+								additional = false;
+							}
+						}
+					}
+				}
+
+				Permission permission = null;
+
+				List<Permission> existingPermissions = get(target, name);
+
+				for (Permission existingPermission : existingPermissions) {
+					if (existingPermission.getStarts() == null) {
+						permission = existingPermission;
+						break;
+					}
+				}
+
+				if (permission == null || !additional) {
+					permission = new Permission();
+					permission.setTarget(target);
+					permission.setName(name);
+					permission.setAddon(permissionMapping.isAddon());
+					permission.setStarts(starts);
+					permission.setExpires(expires);
+				} else {
+					permission.setExpires(InstantHelper.plus(permission.getExpires(),
+							permissionMapping.getLifetime(), permissionMapping.getLifetimeUnit()));
+				}
+
+				if (permissionMapping.isLifetimeRound()) {
+					permission.setExpires(InstantHelper.truncate(permission.getExpires(),
+							permissionMapping.getLifetimeUnit()));
+				}
+
+				permissions.add(permission);
+			}
+		}
+
+		return permissions;
+	}
+
+	/*
+	 * @see de.bstly.we.businesslogic.UserDataProvider#getId()
+	 */
+	@Override
+	public String getId() {
+		return "permissions";
+	}
+
+	/*
+	 * @see de.bstly.we.businesslogic.UserDataProvider#getUserData(java.lang.Long)
+	 */
+	@Override
+	public List<UserData> getUserData(Long userId) {
+		List<UserData> result = Lists.newArrayList();
+		for (Permission permission : getAllByTarget(userId)) {
+			result.add(permission);
+		}
+		return result;
+	}
+
+	/*
+	 * @see de.bstly.we.businesslogic.UserDataProvider#purgeUserData(java.lang.Long)
+	 */
+	@Override
+	public void purgeUserData(Long userId) {
+		for (Permission permission : getAllByTarget(userId)) {
+			permissionRepository.delete(permission);
+		}
+	}
+
+}

core/src/main/java/de/bstly/we/businesslogic/PermissionMappingManager.java

@@ -0,0 +1,139 @@
+/**
+ * 
+ */
+package de.bstly.we.businesslogic;
+
+import java.time.temporal.ChronoUnit;
+import java.util.List;
+import java.util.Set;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Sort;
+import org.springframework.stereotype.Component;
+import org.springframework.util.Assert;
+
+import com.google.common.collect.Lists;
+
+import de.bstly.we.model.PermissionMapping;
+import de.bstly.we.model.QPermissionMapping;
+import de.bstly.we.repository.PermissionMappingRepository;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@Component
+public class PermissionMappingManager {
+
+	@Autowired
+	private PermissionMappingRepository permissionMappingRepository;
+	private QPermissionMapping qPermissionMapping = QPermissionMapping.permissionMapping;
+
+	/**
+	 * 
+	 * @param item
+	 * @return
+	 */
+	public List<PermissionMapping> getAllByItem(Integer item) {
+		return Lists.newArrayList(
+				permissionMappingRepository.findAll(qPermissionMapping.item.eq(item)));
+	}
+
+	/**
+	 * 
+	 * @param name
+	 * @return
+	 */
+	public List<PermissionMapping> getAllByName(String name) {
+		return Lists.newArrayList(
+				permissionMappingRepository.findAll(qPermissionMapping.names.contains(name)));
+	}
+
+	/**
+	 * 
+	 * @param item
+	 * @return
+	 */
+	public boolean exists(Integer item) {
+		return permissionMappingRepository.exists(qPermissionMapping.item.eq(item));
+	}
+
+	/**
+	 * 
+	 * @param item
+	 * @param name
+	 * @return
+	 */
+	public boolean exists(Integer item, String name) {
+		return permissionMappingRepository.exists(
+				qPermissionMapping.item.eq(item).and(qPermissionMapping.names.contains(name)));
+	}
+
+	/**
+	 * 
+	 * @param item
+	 * @param names
+	 * @param lifetime
+	 * @param lifetimeUnit
+	 * @param addon
+	 * @param product
+	 * @return
+	 */
+	public PermissionMapping create(Integer item, Set<String> names, Long lifetime,
+			ChronoUnit lifetimeUnit, boolean lifetimeRound, boolean addon, String product,
+			String startsQuestion, String expiresQuestion) {
+		for (String name : names) {
+			Assert.isTrue(!exists(item, name), "PermissionMapping for item '" + item
+					+ "' with permission '" + name + "' already exists!");
+		}
+		PermissionMapping permissionMapping = new PermissionMapping();
+		permissionMapping.setItem(item);
+		permissionMapping.setNames(names);
+		permissionMapping.setLifetime(lifetime);
+		permissionMapping.setLifetimeUnit(lifetimeUnit);
+		permissionMapping.setLifetimeRound(lifetimeRound);
+		permissionMapping.setAddon(addon);
+		permissionMapping.setProduct(product);
+		permissionMapping.setStartsQuestion(startsQuestion);
+		permissionMapping.setExpiresQuestion(expiresQuestion);
+		return permissionMappingRepository.save(permissionMapping);
+	}
+
+	/**
+	 * 
+	 * @param permissionMapping
+	 * @return
+	 */
+	public PermissionMapping update(PermissionMapping permissionMapping) {
+		return permissionMappingRepository.save(permissionMapping);
+	}
+
+	/**
+	 * 
+	 * @param item
+	 * @param name
+	 */
+	public void delete(Long id) {
+		Assert.isTrue(permissionMappingRepository.existsById(id),
+				"Permission Mapping '" + id + "' does not exists!");
+		PermissionMapping permissionMapping = permissionMappingRepository.findById(id).get();
+		permissionMappingRepository.delete(permissionMapping);
+	}
+
+	/**
+	 * 
+	 * @param page
+	 * @param size
+	 * @param sortBy
+	 * @param descending
+	 * @return
+	 */
+	public Page<PermissionMapping> get(int page, int size, String sortBy, boolean descending) {
+		Sort sort = descending ? Sort.by(sortBy).descending() : Sort.by(sortBy).ascending();
+		return permissionMappingRepository.findAll(PageRequest.of(page, size, sort));
+	}
+
+}

core/src/main/java/de/bstly/we/businesslogic/Permissions.java

@@ -0,0 +1,18 @@
+/**
+ * 
+ */
+package de.bstly.we.businesslogic;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+public interface Permissions {
+
+	public static final String ROLE_ADMIN = "ROLE_ADMIN";
+	public static final String ROLE_USER = "ROLE_USER";
+	public static final String ROLE_MEMBER = "ROLE_MEMBER";
+	public static final String ROLE_GUEST = "ROLE_GUEST";
+	public static final String MAIL = "mail";
+
+}

core/src/main/java/de/bstly/we/businesslogic/PretixItemStatus.java

@@ -0,0 +1,12 @@
+/**
+ * 
+ */
+package de.bstly.we.businesslogic;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+public enum PretixItemStatus {
+	ERROR, NOT_FOUND, PENDING, PAID, EXPIRED, CANCELED, REDEEMED
+}

core/src/main/java/de/bstly/we/businesslogic/PretixManager.java

@@ -0,0 +1,542 @@
+/**
+ * 
+ */
+package de.bstly.we.businesslogic;
+
+import java.time.Instant;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.SmartInitializingSingleton;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.core.env.Environment;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpMethod;
+import org.springframework.stereotype.Component;
+import org.springframework.util.LinkedMultiValueMap;
+import org.springframework.util.MultiValueMap;
+import org.springframework.util.StringUtils;
+import org.springframework.web.reactive.function.client.WebClient;
+import org.springframework.web.reactive.function.client.WebClientResponseException;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonArray;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParser;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@Component
+public class PretixManager implements SmartInitializingSingleton {
+
+	public static final int invalid_item = -1;
+
+	private Logger logger = LoggerFactory.getLogger(PretixManager.class);
+
+	@Autowired
+	private Environment environment;
+	@Autowired
+	private SystemPropertyManager systemPropertyManager;
+	protected static Gson gson = new Gson();
+
+	public static final String SYSTEM_PROPERTY_PRETIX_HOST = "pretix.host";
+	public static final String SYSTEM_PROPERTY_PRETIX_TOKEN = "pretix.token";
+	public static final String SYSTEM_PROPERTY_PRETIX_ORGANIZER = "pretix.organizer";
+	public static final String SYSTEM_PROPERTY_PRETIX_EVENT = "pretix.event";
+	public static final String SYSTEM_PROPERTY_PRETIX_CHECKINLIST = "pretix.checkinlist";
+	public static final String SYSTEM_PROPERTY_PRETIX_QUOTA_REGISTRATIONS = "pretix.quota.registrations";
+	public static final String SYSTEM_PROPERTY_PRETIX_QUOTA_ADDONS = "pretix.quota.addons";
+
+	public static final String SYSTEM_PROPERTY_PRETIX_MEMBERSHIP_ITEM = "pretix.membership.item";
+	public static final String SYSTEM_PROPERTY_PRETIX_MEMBERSHIPFEE_ITEM = "pretix.membershipfee.item";
+
+	// membership ID management
+	public static final String SYSTEM_PROPERTY_PRETIX_MEMBERSHIP_ID_QUESTION = "pretix.membershipid.question";
+
+	public static final String SYSTEM_PROPERTY_PRETIX_MEMBERSHIPFEE_REFERENCE_QUESTION = "pretix.membershipfeereference.question";
+
+	public static final String SYSTEM_PROPERTY_PRETIX_MEMBERSHIPFEE_CODE_QUESTION = "pretix.membershipfeecode.question";
+
+	public static final String SYSTEM_PROPERTY_PRETIX_MEMBERSHIP_INTERNAL_ID_QUESTION = "pretix.membershipinternalid.question";
+
+	public static final String SYSTEM_PROPERTY_PRETIX_MEMBERSHIP_ACTIVE_QUESTION = "pretix.membershipactive.question";
+
+	public static final String SYSTEM_PROPERTY_PRETIX_MEMBERSHIP_DISCOUNT_PERIOD = "pretix.membership.discount.period";
+
+	public static final String SYSTEM_PROPERTY_PRETIX_MEMBERSHIPFEE_ORDER_DAYS = "pretix.membershipfee.order.days";
+
+	public static final String SYSTEM_PROPERTY_PRETIX_MEMBERSHIPFEE_REMINDER_DAYS = "pretix.membershipfee.reminder.days";
+
+	public static final String SYSTEM_PROPERTY_PRETIX_MEMBERSHIPFEE_REMINDER_QUESTION = "pretix.membershipfee.reminder.question";
+
+	public static final String SYSTEM_PROPERTY_PRETIX_ORDER_SENDMAIL = "pretix.order.sendmail";
+	public static final String SYSTEM_PROPERTY_PRETIX_ORDER_TESTMODE = "pretix.order.testmode";
+	public static final String SYSTEM_PROPERTY_PRETIX_ORDER_SIMULATE = "pretix.order.simulate";
+
+	public enum ITEM_STATUS {
+		ERROR, NOT_FOUND, PENDING, PAID, EXPIRED, CANCELED, REDEEMED
+	}
+
+	private String host;
+	private String token;
+	private String organizer;
+	private String event;
+	private String checkinlist;
+	private int quotaRegistration;
+	private int quotaAddons;
+	protected WebClient webClient;
+
+	/*
+	 * @see org.springframework.beans.factory.SmartInitializingSingleton#
+	 * afterSingletonsInstantiated()
+	 */
+	@Override
+	public void afterSingletonsInstantiated() {
+
+		if (!systemPropertyManager.has(SYSTEM_PROPERTY_PRETIX_HOST)) {
+			systemPropertyManager.add(SYSTEM_PROPERTY_PRETIX_HOST,
+					environment.getProperty("we.bstly." + SYSTEM_PROPERTY_PRETIX_HOST, ""));
+		}
+		if (!systemPropertyManager.has(SYSTEM_PROPERTY_PRETIX_TOKEN)) {
+			systemPropertyManager.add(SYSTEM_PROPERTY_PRETIX_TOKEN,
+					environment.getProperty("we.bstly." + SYSTEM_PROPERTY_PRETIX_TOKEN, ""));
+		}
+		if (!systemPropertyManager.has(SYSTEM_PROPERTY_PRETIX_ORGANIZER)) {
+			systemPropertyManager.add(SYSTEM_PROPERTY_PRETIX_ORGANIZER,
+					environment.getProperty("we.bstly." + SYSTEM_PROPERTY_PRETIX_ORGANIZER, ""));
+		}
+		if (!systemPropertyManager.has(SYSTEM_PROPERTY_PRETIX_EVENT)) {
+			systemPropertyManager.add(SYSTEM_PROPERTY_PRETIX_EVENT,
+					environment.getProperty("we.bstly." + SYSTEM_PROPERTY_PRETIX_EVENT, ""));
+		}
+		if (!systemPropertyManager.has(SYSTEM_PROPERTY_PRETIX_CHECKINLIST)) {
+			systemPropertyManager.add(SYSTEM_PROPERTY_PRETIX_CHECKINLIST,
+					environment.getProperty("we.bstly." + SYSTEM_PROPERTY_PRETIX_CHECKINLIST, ""));
+		}
+		if (!systemPropertyManager.has(SYSTEM_PROPERTY_PRETIX_QUOTA_REGISTRATIONS)) {
+			systemPropertyManager.add(SYSTEM_PROPERTY_PRETIX_QUOTA_REGISTRATIONS, environment
+					.getProperty("we.bstly." + SYSTEM_PROPERTY_PRETIX_QUOTA_REGISTRATIONS, "0"));
+		}
+		if (!systemPropertyManager.has(SYSTEM_PROPERTY_PRETIX_QUOTA_ADDONS)) {
+			systemPropertyManager.add(SYSTEM_PROPERTY_PRETIX_QUOTA_ADDONS, environment
+					.getProperty("we.bstly." + SYSTEM_PROPERTY_PRETIX_QUOTA_ADDONS, "0"));
+		}
+
+		if (!systemPropertyManager.has(SYSTEM_PROPERTY_PRETIX_MEMBERSHIP_ITEM)) {
+			systemPropertyManager.add(SYSTEM_PROPERTY_PRETIX_MEMBERSHIP_ITEM, environment
+					.getProperty("we.bstly." + SYSTEM_PROPERTY_PRETIX_MEMBERSHIP_ITEM, "0"));
+		}
+		if (!systemPropertyManager.has(SYSTEM_PROPERTY_PRETIX_MEMBERSHIPFEE_ITEM)) {
+			systemPropertyManager.add(SYSTEM_PROPERTY_PRETIX_MEMBERSHIPFEE_ITEM, environment
+					.getProperty("we.bstly." + SYSTEM_PROPERTY_PRETIX_MEMBERSHIPFEE_ITEM, "0"));
+		}
+
+		buildWebClient();
+	}
+
+	/**
+	 * 
+	 */
+	public void buildWebClient() {
+		host = systemPropertyManager.get(SYSTEM_PROPERTY_PRETIX_HOST);
+		token = systemPropertyManager.get(SYSTEM_PROPERTY_PRETIX_TOKEN);
+		organizer = systemPropertyManager.get(SYSTEM_PROPERTY_PRETIX_ORGANIZER);
+		event = systemPropertyManager.get(SYSTEM_PROPERTY_PRETIX_EVENT);
+		checkinlist = systemPropertyManager.get(SYSTEM_PROPERTY_PRETIX_CHECKINLIST);
+		quotaRegistration = systemPropertyManager
+				.getInteger(SYSTEM_PROPERTY_PRETIX_QUOTA_REGISTRATIONS);
+		quotaAddons = systemPropertyManager.getInteger(SYSTEM_PROPERTY_PRETIX_QUOTA_ADDONS);
+		webClient = WebClient.builder().baseUrl(host)
+				.defaultHeader(HttpHeaders.CONTENT_TYPE, "application/json")
+				.defaultHeader(HttpHeaders.AUTHORIZATION, "Token " + token).build();
+	}
+
+	/**
+	 * 
+	 * @param secret
+	 * @return
+	 */
+	public ITEM_STATUS getItemStatus(String secret) {
+		try {
+			JsonObject item = getCheckInItemBySecret(secret);
+
+			if (item != null) {
+				if (item.get("secret").getAsString().equals(secret)) {
+					if (item.getAsJsonArray("checkins").size() < 1
+							&& "p".equals(item.get("order__status").getAsString())) {
+						return ITEM_STATUS.PAID;
+					} else if (item.getAsJsonArray("checkins").size() > 0) {
+						return ITEM_STATUS.REDEEMED;
+					}
+				} else {
+					return ITEM_STATUS.ERROR;
+				}
+			} else {
+				item = getOrderBySecret(secret);
+				if (item != null) {
+					logger.warn("Checked secret: '" + secret + "' without valid payment!");
+					return ITEM_STATUS.ERROR;
+				}
+			}
+			return ITEM_STATUS.NOT_FOUND;
+		} catch (WebClientResponseException e) {
+			return ITEM_STATUS.ERROR;
+		}
+	}
+
+	/**
+	 * 
+	 * @param secret
+	 * @return
+	 */
+	public JsonObject getCheckInItemBySecret(String secret) {
+		MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+		queryParams.add("secret", secret);
+		JsonObject orderPositions = request(
+				String.format("/api/v1/organizers/%s/events/%s/checkinlists/%s/positions/",
+						organizer, event, checkinlist),
+				HttpMethod.GET, queryParams).getAsJsonObject();
+
+		JsonArray results = orderPositions.getAsJsonArray("results");
+		if (results.size() == 1) {
+			return results.get(0).getAsJsonObject();
+		}
+
+		return null;
+	}
+
+	/**
+	 * 
+	 * @param code
+	 * @return
+	 */
+	public JsonObject getOrder(String code) {
+		return request(
+				String.format("/api/v1/organizers/%s/events/%s/orders/%s/", organizer, event, code),
+				HttpMethod.GET).getAsJsonObject();
+	}
+
+	/**
+	 * 
+	 * @param secret
+	 * @return
+	 */
+	public JsonObject getOrderBySecret(String secret) {
+		MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+		queryParams.add("secret", secret);
+
+		JsonObject orderPositions = request(
+				String.format("/api/v1/organizers/%s/events/%s/orderpositions/", organizer, event),
+				HttpMethod.GET, queryParams).getAsJsonObject();
+
+		JsonArray results = orderPositions.getAsJsonArray("results");
+		if (results.size() == 1) {
+			JsonObject orderPosition = results.get(0).getAsJsonObject();
+			return request(String.format("/api/v1/organizers/%s/events/%s/orders/%s/", organizer,
+					event, orderPosition.get("order").getAsString()), HttpMethod.GET)
+							.getAsJsonObject();
+		}
+
+		return null;
+	}
+
+	/**
+	 * 
+	 * @param order
+	 * @return
+	 */
+	public JsonObject createOrder(JsonObject order) {
+		return request(String.format("/api/v1/organizers/%s/events/%s/orders/", organizer, event),
+				HttpMethod.POST, order).getAsJsonObject();
+	}
+
+	/**
+	 * 
+	 * @param order
+	 * @return
+	 */
+	public JsonObject extendOrder(String code, JsonObject expire) {
+		return request(String.format("/api/v1/organizers/%s/events/%s/orders/%s/extend/", organizer,
+				event, code), HttpMethod.POST, expire).getAsJsonObject();
+	}
+
+	/**
+	 * 
+	 * @param code
+	 */
+	public void sendEmail(String code) {
+		request(String.format("/api/v1/organizers/%s/events/%s/orders/%s/resend_link/", organizer,
+				event, code), HttpMethod.POST);
+	}
+
+	/**
+	 * 
+	 * @param secret
+	 * @return
+	 */
+	public Instant getLastPaymentDateBySecret(String secret) {
+		MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+		queryParams.add("secret", secret);
+
+		JsonObject orderPositions = request(
+				String.format("/api/v1/organizers/%s/events/%s/orderpositions/", organizer, event),
+				HttpMethod.GET, queryParams).getAsJsonObject();
+
+		JsonArray results = orderPositions.getAsJsonArray("results");
+		if (results.size() == 1) {
+			JsonObject orderPosition = results.get(0).getAsJsonObject();
+			return getLastPaymentDateForOrder(orderPosition.get("order").getAsString());
+		}
+
+		return null;
+	}
+
+	/**
+	 * 
+	 * @param secret
+	 * @return
+	 */
+	public Instant getLastPaymentDateForOrder(String order) {
+		JsonArray paymentResults = request(
+				String.format("/api/v1/organizers/%s/events/%s/orders/%s/payments/", organizer,
+						event, order),
+				HttpMethod.GET).getAsJsonObject().getAsJsonArray("results");
+
+		Instant lastDate = null;
+
+		for (JsonElement element : paymentResults) {
+			JsonObject payment = element.getAsJsonObject();
+			if ("confirmed".equalsIgnoreCase(payment.get("state").getAsString())) {
+				Instant currentDate = Instant.parse(payment.get("payment_date").getAsString());
+				if (lastDate == null) {
+					lastDate = currentDate;
+				} else if (currentDate.isAfter(lastDate)) {
+					lastDate = currentDate;
+				}
+			}
+		}
+
+		return lastDate;
+	}
+
+	/**
+	 * 
+	 * @param secret
+	 * @return
+	 */
+	public JsonObject getCheckInItemByItem(Integer item) {
+		MultiValueMap<String, String> queryParams = new LinkedMultiValueMap<String, String>();
+		queryParams.add("item", String.valueOf(item));
+		JsonObject orderPositions = request(
+				String.format("/api/v1/organizers/%s/events/%s/checkinlists/%s/positions/",
+						organizer, event, checkinlist),
+				HttpMethod.GET, queryParams).getAsJsonObject();
+
+		JsonArray results = orderPositions.getAsJsonArray("results");
+		if (results.size() == 1) {
+			return results.get(0).getAsJsonObject();
+		}
+
+		return null;
+	}
+
+	/**
+	 * 
+	 * @param secret
+	 * @return
+	 */
+	public JsonObject redeemItem(String secret) {
+		if (getItemStatus(secret) == ITEM_STATUS.PAID) {
+			JsonObject checkIn = getCheckInPositions(secret);
+			return redeem(checkIn.get("id").getAsString());
+		}
+		return null;
+	}
+
+	/**
+	 * 
+	 * @param idOrSecret
+	 * @return
+	 */
+	public JsonObject getCheckInPositions(String idOrSecret) {
+		return request(
+				String.format("/api/v1/organizers/%s/events/%s/checkinlists/%s/positions/%s/",
+						organizer, event, checkinlist, idOrSecret),
+				HttpMethod.GET).getAsJsonObject();
+	}
+
+	/**
+	 * 
+	 * @param idOrSecret
+	 * @return
+	 */
+	public JsonObject redeem(String idOrSecret) {
+		return request(String.format(
+				"/api/v1/organizers/%s/events/%s/checkinlists/%s/positions/%s/redeem/", organizer,
+				event, checkinlist, idOrSecret), HttpMethod.POST).getAsJsonObject();
+	}
+
+	/**
+	 * 
+	 * @return
+	 */
+	public JsonObject createRegistrationVoucher() {
+		return createVoucher(quotaRegistration);
+	}
+
+	/**
+	 * 
+	 * @return
+	 */
+	public JsonObject createAddOnVoucher() {
+		return createVoucher(quotaAddons);
+	}
+
+	/**
+	 * 
+	 * @param quotaId
+	 * @return
+	 */
+	public JsonObject createVoucher(int quotaId) {
+		JsonObject voucher = new JsonObject();
+		voucher.addProperty("max_usages", 1);
+		voucher.addProperty("quota", quotaId);
+		voucher.addProperty("block_quota", true);
+		return request(String.format("/api/v1/organizers/%s/events/%s/vouchers/", organizer, event),
+				HttpMethod.POST, voucher).getAsJsonObject();
+	}
+
+	/**
+	 * 
+	 * @param secret
+	 * @return
+	 */
+	public JsonObject getItem(Integer item) {
+		return request(
+				String.format("/api/v1/organizers/%s/events/%s/items/%s/", organizer, event, item),
+				HttpMethod.GET).getAsJsonObject();
+	}
+
+	public JsonArray getVariations(Integer item) {
+		return request(String.format("/api/v1/organizers/%s/events/%s/items/%s/variations/",
+				organizer, event, item), HttpMethod.GET).getAsJsonObject()
+						.getAsJsonArray("results");
+	}
+
+	/**
+	 * 
+	 * @param item
+	 * @param variationId
+	 * @param variation
+	 */
+	public void updateVariation(Integer item, Integer variationId, JsonObject variation) {
+		request(String.format("/api/v1/organizers/%s/events/%s/items/%s/variations/%s/", organizer,
+				event, item, variationId), HttpMethod.PATCH, variation);
+	}
+
+	/**
+	 * 
+	 * @param item
+	 * @param variation
+	 */
+	public void deleteVariation(Integer item, Integer variation) {
+		request(String.format("/api/v1/organizers/%s/events/%s/items/%s/variations/%s/", organizer,
+				event, item, variation), HttpMethod.DELETE);
+	}
+
+	/**
+	 * 
+	 * @param item
+	 */
+	public void deleteVariations(Integer item) {
+		for (JsonElement variationElement : getVariations(item)) {
+			JsonObject variation = variationElement.getAsJsonObject();
+			deleteVariation(item, variation.get("id").getAsInt());
+		}
+	}
+
+	/**
+	 * 
+	 * @param path
+	 * @param method
+	 * @return
+	 */
+	public JsonElement request(String path, HttpMethod method) {
+		return request(path, method, null, new LinkedMultiValueMap<String, String>());
+	}
+
+	/**
+	 * 
+	 * @param path
+	 * @param method
+	 * @param queryParameters
+	 * @return
+	 */
+	public JsonElement request(String path, HttpMethod method,
+			MultiValueMap<String, String> queryParameters) {
+		return request(path, method, null, queryParameters);
+	}
+
+	/**
+	 * 
+	 * @param path
+	 * @param method
+	 * @param queryParameters
+	 * @return
+	 */
+	public JsonElement request(String path, HttpMethod method, JsonElement payload) {
+		return request(path, method, payload, new LinkedMultiValueMap<String, String>());
+	}
+
+	/**
+	 * 
+	 * @param path
+	 * @param payload
+	 * @param method
+	 * @param queryParameters
+	 * @return
+	 */
+	public JsonElement request(String path, HttpMethod method, JsonElement payload,
+			MultiValueMap<String, String> queryParameters) {
+		WebClient.RequestBodySpec request = webClient.method(method)
+				.uri(uriBuilder -> uriBuilder.path(path).queryParams(queryParameters).build());
+
+		if (payload != null) {
+			request.bodyValue(gson.toJson(payload));
+		}
+
+		String jsonString = request.retrieve().bodyToMono(String.class).block();
+
+		if (StringUtils.hasText(jsonString)) {
+			return JsonParser.parseString(jsonString);
+		}
+
+		return null;
+	}
+
+	/**
+	 * @return the organizer
+	 */
+	public String getOrganizer() {
+		return organizer;
+	}
+
+	/**
+	 * @return the event
+	 */
+	public String getEvent() {
+		return event;
+	}
+
+	/**
+	 * @return the checkinlist
+	 */
+	public String getCheckinlist() {
+		return checkinlist;
+	}
+
+}

core/src/main/java/de/bstly/we/businesslogic/QuotaManager.java

@@ -0,0 +1,233 @@
+/**
+ * 
+ */
+package de.bstly.we.businesslogic;
+
+import java.util.List;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+import org.springframework.util.Assert;
+
+import com.google.common.collect.Lists;
+
+import de.bstly.we.model.QQuota;
+import de.bstly.we.model.Quota;
+import de.bstly.we.model.QuotaMapping;
+import de.bstly.we.model.UserData;
+import de.bstly.we.repository.QuotaRepository;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@Component
+public class QuotaManager implements UserDataProvider {
+
+	@Autowired
+	private QuotaRepository quotaRepository;
+	@Autowired
+	private QuotaMappingManager quotaMappingManager;
+	private QQuota qQuota = QQuota.quota;
+
+	/**
+	 * 
+	 * @param target
+	 * @param name
+	 * @return
+	 */
+	public Quota get(Long target, String name) {
+		if (target != null && name != null) {
+			return quotaRepository.findOne(qQuota.name.eq(name).and(qQuota.target.eq(target)))
+					.orElse(null);
+		}
+		return null;
+	}
+
+	/**
+	 * 
+	 * @param name
+	 * @return
+	 */
+	public List<Quota> getAllByName(String name) {
+		return Lists.newArrayList(quotaRepository.findAll(qQuota.name.eq(name)));
+	}
+
+	/**
+	 * 
+	 * @param target
+	 * @return
+	 */
+	public List<Quota> getAllByTarget(Long target) {
+		if (target != null) {
+			return Lists.newArrayList(quotaRepository.findAll(qQuota.target.eq(target)));
+		}
+		return Lists.newArrayList();
+	}
+
+	/**
+	 * 
+	 * @param target
+	 * @return
+	 */
+	public List<Quota> getNotExpiresByTarget(Long target) {
+		if (target != null) {
+			return Lists.newArrayList(
+					quotaRepository.findAll(qQuota.target.eq(target).and(qQuota.value.gt(0))));
+		}
+		return Lists.newArrayList();
+	}
+
+	/**
+	 * 
+	 * @param target
+	 * @param name
+	 * @return
+	 */
+	public boolean hasQuota(Long target, String name) {
+		return target != null && quotaRepository
+				.exists(qQuota.name.eq(name).and(qQuota.target.eq(target)).and(qQuota.value.gt(0)));
+	}
+
+	/**
+	 * 
+	 * @param target
+	 * @param name
+	 * @param addon
+	 * @param value
+	 * @param unit
+	 * @return
+	 */
+	public Quota create(Long target, String name, long value, String unit, boolean disposable) {
+		Quota newQuota = new Quota();
+		newQuota.setTarget(target);
+		newQuota.setName(name);
+		newQuota.setValue(value);
+		newQuota.setUnit(unit);
+		newQuota.setDisposable(disposable);
+
+		return quotaRepository.save(newQuota);
+	}
+
+	/**
+	 * 
+	 * @param quota
+	 * @return
+	 */
+	public Quota update(Quota quota) {
+		Assert.isTrue(
+				quotaRepository.exists(
+						qQuota.target.eq(quota.getTarget()).and(qQuota.name.eq(quota.getName()))),
+				"Quota '" + quota.getName() + "' for target + '" + quota.getTarget()
+						+ "' not exists!");
+		Quota updateQuota = quotaRepository
+				.findOne(qQuota.target.eq(quota.getTarget()).and(qQuota.name.eq(quota.getName())))
+				.get();
+		updateQuota.setValue(quota.getValue());
+		updateQuota.setUnit(quota.getUnit());
+		updateQuota.setDisposable(quota.isDisposable());
+		return quotaRepository.save(updateQuota);
+	}
+
+	/**
+	 * 
+	 * @param name
+	 * @param clone
+	 * @return
+	 */
+	public List<Quota> clone(String name, String clone, long value) {
+		List<Quota> quotas = Lists.newArrayList();
+
+		for (Quota quota : quotaRepository.findAll(qQuota.name.eq(name))) {
+			if (!quotaRepository
+					.exists(qQuota.name.eq(clone).and(qQuota.target.eq(quota.getTarget())))) {
+				quotas.add(create(quota.getTarget(), clone, value >= 0 ? value : quota.getValue(),
+						quota.getUnit(), quota.isDisposable()));
+			}
+		}
+
+		return quotas;
+	}
+
+	/**
+	 * 
+	 * @param target
+	 * @param name
+	 */
+	public void delete(Long target, String name) {
+		Assert.isTrue(quotaRepository.exists(qQuota.target.eq(target).and(qQuota.name.eq(name))),
+				"Quota '" + name + "' for target + '" + target + "' not exists!");
+		Quota delete = quotaRepository.findOne(qQuota.target.eq(target).and(qQuota.name.eq(name)))
+				.get();
+		quotaRepository.delete(delete);
+	}
+
+	/**
+	 * 
+	 * @param target
+	 */
+	public void deleteAll(Long target) {
+		quotaRepository.deleteAll(quotaRepository.findAll(qQuota.target.eq(target)));
+	}
+
+	/**
+	 * 
+	 * @param name
+	 */
+	public void deleteAll(String name) {
+		quotaRepository.deleteAll(quotaRepository.findAll(qQuota.name.eq(name)));
+	}
+
+	/**
+	 * 
+	 * @param target
+	 * @param item
+	 */
+	public void applyItem(Long target, Integer item) {
+		for (QuotaMapping quotaMapping : quotaMappingManager.getAllByItem(item)) {
+			Quota quota = get(target, quotaMapping.getName());
+			if (quota == null) {
+				quota = create(target, quotaMapping.getName(), quotaMapping.getValue(),
+						quotaMapping.getUnit(), quotaMapping.isDisposable());
+
+			} else {
+				quota.setValue(quotaMapping.isAppend() ? quota.getValue() + quotaMapping.getValue()
+						: quotaMapping.getValue());
+				quota = update(quota);
+			}
+
+		}
+	}
+
+	/*
+	 * @see de.bstly.we.businesslogic.UserDataProvider#getId()
+	 */
+	@Override
+	public String getId() {
+		return "quotas";
+	}
+
+	/*
+	 * @see de.bstly.we.businesslogic.UserDataProvider#getUserData(java.lang.Long)
+	 */
+	@Override
+	public List<UserData> getUserData(Long userId) {
+		List<UserData> result = Lists.newArrayList();
+		for (Quota quota : getAllByTarget(userId)) {
+			result.add(quota);
+		}
+		return result;
+	}
+
+	/*
+	 * @see de.bstly.we.businesslogic.UserDataProvider#purgeUserData(java.lang.Long)
+	 */
+	@Override
+	public void purgeUserData(Long userId) {
+		for (Quota quota : getAllByTarget(userId)) {
+			quotaRepository.delete(quota);
+		}
+	}
+
+}

core/src/main/java/de/bstly/we/businesslogic/QuotaMappingManager.java

@@ -0,0 +1,134 @@
+/**
+ * 
+ */
+package de.bstly.we.businesslogic;
+
+import java.util.List;
+import java.util.Set;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Sort;
+import org.springframework.stereotype.Component;
+import org.springframework.util.Assert;
+
+import com.google.common.collect.Lists;
+
+import de.bstly.we.model.QQuotaMapping;
+import de.bstly.we.model.QuotaMapping;
+import de.bstly.we.repository.QuotaMappingRepository;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@Component
+public class QuotaMappingManager {
+
+	@Autowired
+	private QuotaMappingRepository quotaMappingRepository;
+	private QQuotaMapping qQuotaMapping = QQuotaMapping.quotaMapping;
+
+	/**
+	 * 
+	 * @param item
+	 * @return
+	 */
+	public List<QuotaMapping> getAllByItem(Integer item) {
+		return Lists
+				.newArrayList(quotaMappingRepository.findAll(qQuotaMapping.items.contains(item)));
+	}
+
+	/**
+	 * 
+	 * @param item
+	 * @return
+	 */
+	public boolean exists(Integer item) {
+		return quotaMappingRepository.exists(qQuotaMapping.items.contains(item));
+	}
+
+	/**
+	 * 
+	 * @param item
+	 * @param name
+	 * @return
+	 */
+	public boolean exists(Integer item, String name) {
+		return quotaMappingRepository
+				.exists(qQuotaMapping.items.contains(item).and(qQuotaMapping.name.eq(name)));
+	}
+
+	/**
+	 * 
+	 * @param item
+	 * @param quota
+	 * @param lifetime
+	 * @return
+	 */
+	public QuotaMapping create(Set<Integer> items, String name, long value, String unit,
+			boolean append, Set<String> products, boolean disposable) {
+		for (Integer item : items) {
+			Assert.isTrue(!exists(item, name), "QuotaMapping for item '" + item + "' with quota '"
+					+ name + "' already exists!");
+		}
+		QuotaMapping quotaMapping = new QuotaMapping();
+		quotaMapping.setItems(items);
+		quotaMapping.setName(name);
+		quotaMapping.setValue(value);
+		quotaMapping.setUnit(unit);
+		quotaMapping.setAppend(append);
+		quotaMapping.setProducts(products);
+		quotaMapping.setDisposable(disposable);
+		return quotaMappingRepository.save(quotaMapping);
+	}
+
+	/**
+	 * 
+	 * @param quotaMapping
+	 * @return
+	 */
+	public QuotaMapping update(QuotaMapping quotaMapping) {
+		Assert.isTrue(
+				quotaMapping.getId() != null
+						&& quotaMappingRepository.existsById(quotaMapping.getId()),
+				"QuotaMapping '" + quotaMapping.getId() + "' does not exists!");
+
+		QuotaMapping updateQuotaMapping = quotaMappingRepository.findById(quotaMapping.getId())
+				.get();
+		updateQuotaMapping.setProducts(quotaMapping.getProducts());
+		updateQuotaMapping.setItems(quotaMapping.getItems());
+		updateQuotaMapping.setValue(quotaMapping.getValue());
+		updateQuotaMapping.setUnit(quotaMapping.getUnit());
+		updateQuotaMapping.setAppend(quotaMapping.isAppend());
+		updateQuotaMapping.setDisposable(quotaMapping.isDisposable());
+		return quotaMappingRepository.save(updateQuotaMapping);
+	}
+
+	/**
+	 * 
+	 * @param item
+	 * @param name
+	 */
+	public void delete(Long id) {
+		Assert.isTrue(quotaMappingRepository.existsById(id),
+				"QuotaMapping '" + id + "' does not exists!");
+		quotaMappingRepository.deleteById(id);
+	}
+
+	/**
+	 * 
+	 * @param page
+	 * @param size
+	 * @param sortBy
+	 * @param descending
+	 * @return
+	 */
+	public Page<QuotaMapping> get(int page, int size, String sortBy, boolean descending) {
+		Sort sort = descending ? Sort.by(sortBy).descending() : Sort.by(sortBy).ascending();
+		return quotaMappingRepository.findAll(PageRequest.of(page, size, sort));
+	}
+
+}

core/src/main/java/de/bstly/we/businesslogic/Quotas.java

@@ -0,0 +1,15 @@
+/**
+ * 
+ */
+package de.bstly.we.businesslogic;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+public interface Quotas {
+
+	public static final String REGISTRATION_VOUCHERS = "registration_vouchers";
+	public static final String ALIAS_CREATION = "alias_creation";
+
+}

core/src/main/java/de/bstly/we/businesslogic/Setup.java

@@ -0,0 +1,107 @@
+/**
+ * 
+ */
+package de.bstly.we.businesslogic;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.time.Instant;
+import java.time.temporal.ChronoUnit;
+import java.util.List;
+
+import org.apache.commons.lang3.RandomStringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.SmartInitializingSingleton;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.core.io.Resource;
+import org.springframework.core.io.ResourceLoader;
+import org.springframework.stereotype.Component;
+import org.springframework.util.StringUtils;
+
+import com.google.common.collect.Lists;
+
+import de.bstly.we.businesslogic.support.InstantHelper;
+import de.bstly.we.controller.validation.UserModelValidator;
+import de.bstly.we.model.User;
+import de.bstly.we.model.UserStatus;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@Component
+public class Setup implements SmartInitializingSingleton {
+
+	@Autowired
+	private UserManager userManager;
+	@Autowired
+	private PermissionManager permissionManager;
+	@Autowired
+	private ResourceLoader resourceLoader;
+	@Autowired
+	private SystemPropertyManager systemPropertyManager;
+
+	protected static final long TAUSEND_JAHRE = 1000;
+
+	@Value("${we.bstly.admin.password:}")
+	private String adminPassword;
+	@Value("${we.bstly.setup:true}")
+	private boolean setup;
+
+	private Logger logger = LoggerFactory.getLogger(Setup.class);
+
+	/*
+	 * @see org.springframework.beans.factory.SmartInitializingSingleton#
+	 * afterSingletonsInstantiated()
+	 */
+	@Override
+	public void afterSingletonsInstantiated() {
+		// create admin account if not found
+		if (!setup || !systemPropertyManager.has("setup")) {
+			if (!StringUtils.hasText(adminPassword)) {
+				adminPassword = RandomStringUtils.random(24, true, true);
+				logger.error("password for 'admin': " + adminPassword);
+			}
+			User admin = userManager.create("admin", adminPassword, UserStatus.SLEEP);
+			permissionManager.create(admin.getId(), Permissions.ROLE_ADMIN, false, null,
+					InstantHelper.plus(Instant.now(), TAUSEND_JAHRE, ChronoUnit.YEARS));
+
+			systemPropertyManager.add("setup", "true");
+		}
+
+		try {
+			Resource resource = resourceLoader.getResource("classpath:usernames.txt");
+
+			if (resource.exists()) {
+				BufferedReader br = new BufferedReader(
+						new InputStreamReader(resource.getInputStream()));
+				List<String> usernames = Lists.newArrayList();
+
+				String line;
+				while ((line = br.readLine()) != null) {
+					if (StringUtils.hasText(line) && !usernames.contains(line)
+							&& !line.startsWith("#")) {
+						usernames.add(line);
+					}
+				}
+
+				if (systemPropertyManager.has(UserModelValidator.RESERVED_USERNAMES)) {
+					systemPropertyManager.update(UserModelValidator.RESERVED_USERNAMES,
+							org.apache.commons.lang3.StringUtils.join(usernames, ","));
+				} else {
+					systemPropertyManager.add(UserModelValidator.RESERVED_USERNAMES,
+							org.apache.commons.lang3.StringUtils.join(usernames, ","));
+				}
+			}
+
+		} catch (IOException e) {
+			e.printStackTrace();
+		}
+
+	}
+
+}

core/src/main/java/de/bstly/we/businesslogic/SystemProfileFieldManager.java

@@ -0,0 +1,64 @@
+/**
+ * 
+ */
+package de.bstly.we.businesslogic;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Sort;
+import org.springframework.stereotype.Component;
+
+import de.bstly.we.model.SystemProfileField;
+import de.bstly.we.repository.SystemProfileFieldRepository;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+@Component
+public class SystemProfileFieldManager {
+
+	@Autowired
+	private SystemProfileFieldRepository systemProfileFieldRepository;
+
+	/**
+	 * 
+	 * @param systemProfileField
+	 * @return
+	 */
+	public SystemProfileField save(SystemProfileField systemProfileField) {
+		return systemProfileFieldRepository.save(systemProfileField);
+	}
+
+	/**
+	 * 
+	 * @param name
+	 * @return
+	 */
+	public SystemProfileField get(String name) {
+		return systemProfileFieldRepository.findById(name).orElse(null);
+	}
+
+	/**
+	 * 
+	 * @param page
+	 * @param size
+	 * @param sortBy
+	 * @param descending
+	 * @return
+	 */
+	public Page<SystemProfileField> get(int page, int size, String sortBy, boolean descending) {
+		Sort sort = descending ? Sort.by(sortBy).descending() : Sort.by(sortBy).ascending();
+		return systemProfileFieldRepository.findAll(PageRequest.of(page, size, sort));
+	}
+
+	/**
+	 * 
+	 * @param name
+	 */
+	public void delete(String name) {
+		systemProfileFieldRepository.deleteById(name);
+	}
+
+}

core/src/main/java/de/bstly/we/businesslogic/SystemPropertyManager.java

@@ -0,0 +1,133 @@
+/**
+ * 
+ */
+package de.bstly.we.businesslogic;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+import org.springframework.util.Assert;
+
+import de.bstly.we.model.SystemProperty;
+import de.bstly.we.repository.SystemPropertyRepository;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@Component
+public class SystemPropertyManager {
+
+	@Autowired
+	private SystemPropertyRepository systemPropertyRepository;
+
+	/**
+	 * 
+	 * @param key
+	 * @return
+	 */
+	public boolean has(String key) {
+		return systemPropertyRepository.existsById(key);
+	}
+
+	/**
+	 * 
+	 * @param key
+	 * @return
+	 */
+	public String get(String key) {
+		return systemPropertyRepository.findById(key).orElse(new SystemProperty()).getValue();
+	}
+
+	/**
+	 * 
+	 * @param key
+	 * @param defaultValue
+	 * @return
+	 */
+	public String get(String key, String defaultValue) {
+		return systemPropertyRepository.findById(key).orElse(new SystemProperty(key, defaultValue)).getValue();
+	}
+
+	/**
+	 * 
+	 * @param key
+	 * @return
+	 */
+	public boolean getBoolean(String key) {
+		return getBoolean(key, false);
+	}
+
+	/**
+	 * 
+	 * @param key
+	 * @param defaultValue
+	 * @return
+	 */
+	public boolean getBoolean(String key, boolean defaultValue) {
+		return Boolean.valueOf(get(key, String.valueOf(defaultValue)));
+	}
+
+	/**
+	 * 
+	 * @param key
+	 * @return
+	 */
+	public int getInteger(String key) {
+		return getInteger(key, 0);
+	}
+
+	/**
+	 * 
+	 * @param key
+	 * @param defaultValue
+	 * @return
+	 */
+	public int getInteger(String key, int defaultValue) {
+		return Integer.valueOf(get(key, String.valueOf(defaultValue)));
+	}
+
+	/**
+	 * 
+	 * @param key
+	 * @return
+	 */
+	public long getLong(String key) {
+		return getLong(key, 0L);
+	}
+
+	/**
+	 * 
+	 * @param key
+	 * @param defaultValue
+	 * @return
+	 */
+	public long getLong(String key, long defaultValue) {
+		return Long.valueOf(get(key, String.valueOf(defaultValue)));
+	}
+
+	/**
+	 * 
+	 * @param key
+	 * @param value
+	 */
+	public void add(String key, String value) {
+		Assert.isTrue(!systemPropertyRepository.existsById(key),
+				"System Property already exists, use update method to change value!");
+		systemPropertyRepository.save(new SystemProperty(key, value));
+	}
+
+	/**
+	 * 
+	 * @param key
+	 * @param value
+	 */
+	public void update(String key, String value) {
+		Assert.isTrue(systemPropertyRepository.existsById(key),
+				"System Property does not exists, use add method to add new!");
+		SystemProperty systemProperty = systemPropertyRepository.findById(key).get();
+		systemProperty.setValue(value);
+		systemPropertyRepository.save(systemProperty);
+	}
+
+}

core/src/main/java/de/bstly/we/businesslogic/UserAliasManager.java

@@ -0,0 +1,128 @@
+/**
+ * 
+ */
+package de.bstly.we.businesslogic;
+
+import java.util.List;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Sort;
+import org.springframework.stereotype.Component;
+import org.springframework.util.Assert;
+
+import com.google.common.collect.Lists;
+
+import de.bstly.we.model.QUserAlias;
+import de.bstly.we.model.UserAlias;
+import de.bstly.we.model.UserData;
+import de.bstly.we.repository.UserAliasRepository;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+@Component
+public class UserAliasManager implements UserDataProvider {
+
+	@Autowired
+	private UserManager userManager;
+	@Autowired
+	private UserAliasRepository userAliasRepository;
+	private QUserAlias qUserAlias = QUserAlias.userAlias;
+
+	/**
+	 * 
+	 * @param id
+	 * @return
+	 */
+	public UserAlias get(Long id) {
+		return userAliasRepository.findById(id).orElse(null);
+	}
+
+	/**
+	 * 
+	 * @param userAlias
+	 * @return
+	 */
+	public UserAlias save(UserAlias userAlias) {
+		Assert.notNull(userAlias.getAlias(), "No alias defined!");
+		Assert.notNull(userAlias.getTarget(), "No target defined!");
+		Assert.notNull(userManager.get(userAlias.getTarget()), "Invalid target defined!");
+		return userAliasRepository.save(userAlias);
+	}
+
+	/**
+	 * 
+	 * @param alias
+	 * @return
+	 */
+	public UserAlias getByAlias(String alias) {
+		return userAliasRepository.findOne(qUserAlias.alias.eq(alias)).orElse(null);
+	}
+
+	/**
+	 * 
+	 * @param userId
+	 * @return
+	 */
+	public List<UserAlias> getAllByTarget(Long userId) {
+		return Lists.newArrayList(userAliasRepository.findAll(qUserAlias.target.eq(userId)));
+	}
+
+	/**
+	 * 
+	 * @param id
+	 */
+	public void delete(Long id) {
+		UserAlias userAlias = get(id);
+		if (userAlias != null) {
+			userAliasRepository.delete(userAlias);
+		}
+	}
+
+	/**
+	 * 
+	 * @param page
+	 * @param size
+	 * @param sortBy
+	 * @param descending
+	 * @return
+	 */
+	public Page<UserAlias> get(int page, int size, String sortBy, boolean descending) {
+		Sort sort = descending ? Sort.by(sortBy).descending() : Sort.by(sortBy).ascending();
+		return userAliasRepository.findAll(PageRequest.of(page, size, sort));
+	}
+
+	/*
+	 * @see de.bstly.we.businesslogic.UserDataProvider#getId()
+	 */
+	@Override
+	public String getId() {
+		return "aliases";
+	}
+
+	/*
+	 * @see de.bstly.we.businesslogic.UserDataProvider#getUserData(java.lang.Long)
+	 */
+	@Override
+	public List<UserData> getUserData(Long userId) {
+		List<UserData> result = Lists.newArrayList();
+		for (UserAlias userAlias : getAllByTarget(userId)) {
+			result.add(userAlias);
+		}
+		return result;
+	}
+
+	/*
+	 * @see de.bstly.we.businesslogic.UserDataProvider#purgeUserData(java.lang.Long)
+	 */
+	@Override
+	public void purgeUserData(Long userId) {
+		for (UserAlias userAlias : getAllByTarget(userId)) {
+			userAliasRepository.delete(userAlias);
+		}
+	}
+
+}

core/src/main/java/de/bstly/we/businesslogic/UserDataManager.java

@@ -0,0 +1,181 @@
+/**
+ * 
+ */
+package de.bstly.we.businesslogic;
+
+import java.time.Instant;
+import java.time.temporal.ChronoUnit;
+import java.util.List;
+import java.util.Map;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.SmartInitializingSingleton;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.ApplicationContext;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.domain.Sort;
+import org.springframework.scheduling.annotation.Scheduled;
+import org.springframework.stereotype.Component;
+
+import com.beust.jcommander.internal.Maps;
+import com.google.common.collect.Lists;
+import com.google.gson.Gson;
+
+import de.bstly.we.model.Permission;
+import de.bstly.we.model.User;
+import de.bstly.we.model.UserData;
+import de.bstly.we.model.UserStatus;
+import de.bstly.we.repository.UserRepository;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+@Component
+public class UserDataManager implements SmartInitializingSingleton {
+
+	@Autowired
+	private ApplicationContext context;
+	public static final String SYSTEM_PROPERTY_USERDATA_DAYS = "userdata.days";
+	public static final long SYSTEM_PROPERTY_USERDATA_DAYS_DEFAULT = 30;
+
+	private Logger logger = LoggerFactory.getLogger(UserDataManager.class);
+
+	@Autowired
+	private UserRepository userRepository;
+	@Autowired
+	private PermissionManager permissionManager;
+	@Autowired
+	private SystemPropertyManager systemPropertyManager;
+
+	@Value("${we.bstly.userdata.purge:false}")
+	private boolean purge;
+
+	/**
+	 * UserData Provider
+	 */
+	private List<UserDataProvider> providers;
+	private Gson gson = new Gson();
+
+	/*
+	 * @see org.springframework.beans.factory.SmartInitializingSingleton#
+	 * afterSingletonsInstantiated()
+	 */
+	@Override
+	public void afterSingletonsInstantiated() {
+		providers = Lists.newArrayList();
+
+		for (UserDataProvider provider : context.getBeansOfType(UserDataProvider.class).values()) {
+			providers.add(provider);
+		}
+	}
+
+	/**
+	 * 
+	 */
+	@Scheduled(cron = "${we.bstly.userdata.cron:0 0 0 * * * }")
+	public void purge() {
+		long days = systemPropertyManager.getLong(SYSTEM_PROPERTY_USERDATA_DAYS,
+				SYSTEM_PROPERTY_USERDATA_DAYS_DEFAULT);
+
+		Pageable pageable = PageRequest.of(0, 100, Sort.by("id"));
+		Page<User> page;
+		do {
+			page = userRepository.findAll(pageable);
+			for (User user : page.getContent()) {
+				if (!UserStatus.SLEEP.equals(user.getStatus())) {
+					if (permissionManager.getNotExpiresByTargetIgnoreStart(user.getId())
+							.isEmpty()) {
+						if (UserStatus.PURGE.equals(user.getStatus())) {
+							purge(user, !purge);
+						} else if (UserStatus.NORMAL.equals(user.getStatus())) {
+							Instant last = Instant.MIN;
+							for (Permission permission : permissionManager
+									.getAllByTarget(user.getId())) {
+								if (permission.getExpires().isAfter(last)) {
+									last = permission.getExpires();
+								}
+							}
+
+							if (Instant.now().minus(days, ChronoUnit.DAYS).isAfter(last)) {
+								purge(user, !purge);
+							}
+						}
+					}
+				}
+			}
+			pageable = page.nextPageable();
+		} while (page.hasNext());
+
+	}
+
+	/**
+	 * 
+	 * @param username
+	 */
+	public void purge(User user, boolean dry) {
+		Long userId = user.getId();
+		if (dry) {
+			logger.debug("Would purge all data of user '" + user.getUsername() + "' [id="
+					+ user.getId() + "]!");
+		} else {
+			logger.warn("Purge all data of user '" + user.getUsername() + "' [id=" + user.getId()
+					+ "]!");
+		}
+
+		for (UserDataProvider provider : providers) {
+			if (dry) {
+				List<UserData> result = provider.getUserData(userId);
+				if (!result.isEmpty()) {
+					logger.debug("\tWould have purged '" + provider.getId() + "' data of user '"
+							+ user.getUsername() + "' [id=" + user.getId() + "]!");
+					if (logger.isTraceEnabled()) {
+						for (UserData userData : result) {
+							logger.trace("\t\t" + gson.toJson(userData));
+						}
+					}
+				}
+			} else {
+				List<UserData> result = provider.getUserData(userId);
+				if (!result.isEmpty()) {
+					logger.warn("\tPurge '" + provider.getId() + "' data of user '"
+							+ user.getUsername() + "' [id=" + user.getId() + "]!");
+					if (logger.isTraceEnabled()) {
+						for (UserData userData : result) {
+							logger.trace("\t\t" + gson.toJson(userData));
+						}
+					}
+					provider.purgeUserData(userId);
+				}
+			}
+		}
+
+		if (!dry) {
+			logger.warn("Purged all data of user '" + user.getUsername() + "' [id=" + user.getId()
+					+ "]!");
+		}
+	}
+
+	/**
+	 * 
+	 * @param userId
+	 * @return
+	 */
+	public Map<String, List<UserData>> get(Long userId) {
+		Map<String, List<UserData>> userData = Maps.newHashMap();
+
+		for (UserDataProvider provider : providers) {
+			List<UserData> result = provider.getUserData(userId);
+			if (!result.isEmpty()) {
+				userData.put(provider.getId(), result);
+			}
+		}
+
+		return userData;
+	}
+
+}

core/src/main/java/de/bstly/we/businesslogic/UserDataProvider.java

@@ -0,0 +1,36 @@
+/**
+ * 
+ */
+package de.bstly.we.businesslogic;
+
+import java.util.List;
+
+import de.bstly.we.model.UserData;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+public interface UserDataProvider {
+
+	/**
+	 * 
+	 * @return
+	 */
+	String getId();
+
+	/**
+	 * 
+	 * @param userId
+	 * @return
+	 */
+	List<UserData> getUserData(Long userId);
+
+	/**
+	 * 
+	 * @param userId
+	 * @return
+	 */
+	void purgeUserData(Long userId);
+
+}

core/src/main/java/de/bstly/we/businesslogic/UserDomainManager.java

@@ -0,0 +1,202 @@
+/**
+ * 
+ */
+package de.bstly.we.businesslogic;
+
+import java.util.Hashtable;
+import java.util.List;
+
+import javax.naming.NamingEnumeration;
+import javax.naming.NamingException;
+import javax.naming.directory.Attribute;
+import javax.naming.directory.Attributes;
+import javax.naming.directory.InitialDirContext;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.domain.Sort;
+import org.springframework.scheduling.annotation.Scheduled;
+import org.springframework.stereotype.Component;
+import org.springframework.util.Assert;
+
+import com.google.common.collect.Lists;
+import com.querydsl.core.BooleanBuilder;
+
+import de.bstly.we.model.QUserDomain;
+import de.bstly.we.model.UserData;
+import de.bstly.we.model.UserDomain;
+import de.bstly.we.repository.UserDomainRepository;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+@Component
+public class UserDomainManager implements UserDataProvider {
+
+	public static final int DEFAULT_SECRET_LENGTH = 64;
+
+	@Autowired
+	private UserManager userManager;
+	@Autowired
+	private UserDomainRepository userDomainRepository;
+	private QUserDomain qUserDomain = QUserDomain.userDomain;
+
+	private InitialDirContext dirContext;
+
+	/**
+	 * 
+	 */
+	public UserDomainManager() {
+		Hashtable<String, String> env = new Hashtable<String, String>();
+		env.put("java.naming.factory.initial", "com.sun.jndi.dns.DnsContextFactory");
+		env.put("java.naming.provider.url", "dns:");
+
+		try {
+			dirContext = new InitialDirContext(env);
+		} catch (NamingException e) {
+			e.printStackTrace();
+			throw new RuntimeException("Could not crate InitialDirContext");
+		}
+	}
+
+	/**
+	 * 
+	 * @param id
+	 * @return
+	 */
+	public UserDomain get(Long id) {
+		return userDomainRepository.findById(id).orElse(null);
+	}
+
+	/**
+	 * 
+	 * @param userDomain
+	 * @return
+	 */
+	public UserDomain save(UserDomain userDomain) {
+		Assert.notNull(userDomain.getDomain(), "No domain defined!");
+		Assert.notNull(userDomain.getTarget(), "No target defined!");
+		Assert.notNull(userManager.get(userDomain.getTarget()), "Invalid target defined!");
+		return userDomainRepository.save(userDomain);
+	}
+
+	/**
+	 * 
+	 * @param domain
+	 * @return
+	 */
+	public UserDomain getByDomain(String domain) {
+		return userDomainRepository.findOne(qUserDomain.domain.eq(domain)).orElse(null);
+	}
+
+	/**
+	 * 
+	 * @param userId
+	 * @return
+	 */
+	public List<UserDomain> getAllByTarget(Long userId) {
+		return Lists.newArrayList(userDomainRepository.findAll(qUserDomain.target.eq(userId)));
+	}
+
+	/**
+	 * 
+	 * @param id
+	 */
+	public void delete(Long id) {
+		UserDomain userDomain = get(id);
+		if (userDomain != null) {
+			userDomainRepository.delete(userDomain);
+		}
+	}
+
+	/**
+	 * 
+	 * @param page
+	 * @param size
+	 * @param sortBy
+	 * @param descending
+	 * @return
+	 */
+	public Page<UserDomain> get(int page, int size, String sortBy, boolean descending) {
+		Sort sort = descending ? Sort.by(sortBy).descending() : Sort.by(sortBy).ascending();
+		return userDomainRepository.findAll(PageRequest.of(page, size, sort));
+	}
+
+	/**
+	 * 
+	 */
+	@Scheduled(cron = "0 */15 * * * *")
+	public void validate() {
+		Pageable pageable = PageRequest.of(0, 100, Sort.by("id"));
+		BooleanBuilder filter = new BooleanBuilder();
+		filter.and(qUserDomain.validated.isFalse()
+				.and(qUserDomain.secret.isNotNull().and(qUserDomain.secret.isNotEmpty())));
+		Page<UserDomain> page;
+		do {
+			page = userDomainRepository.findAll(filter.getValue(), pageable);
+			for (UserDomain userDomain : page.getContent()) {
+				try {
+					validate(userDomain);
+				} catch (NamingException e) {
+					e.printStackTrace();
+				}
+			}
+			pageable = page.nextPageable();
+		} while (page.hasNext());
+	}
+
+	/**
+	 * 
+	 * @param userDomain
+	 * @throws NamingException
+	 */
+	public boolean validate(UserDomain userDomain) throws NamingException {
+		Attributes attributes = dirContext.getAttributes("_bstly." + userDomain.getDomain(),
+				new String[] { "TXT" });
+
+		NamingEnumeration<? extends Attribute> attributeEnumeration = attributes.getAll();
+		while (attributeEnumeration.hasMore()) {
+			if (attributeEnumeration.next().toString().endsWith(userDomain.getSecret())) {
+				userDomain.setValidated(true);
+				save(userDomain);
+				return true;
+			}
+		}
+
+		return false;
+	}
+
+	/*
+	 * @see de.bstly.we.businesslogic.UserDataProvider#getId()
+	 */
+	@Override
+	public String getId() {
+		return "domains";
+	}
+
+	/*
+	 * @see de.bstly.we.businesslogic.UserDataProvider#getUserData(java.lang.Long)
+	 */
+	@Override
+	public List<UserData> getUserData(Long userId) {
+		List<UserData> result = Lists.newArrayList();
+		for (UserDomain userDomain : getAllByTarget(userId)) {
+			result.add(userDomain);
+		}
+		return result;
+	}
+
+	/*
+	 * @see de.bstly.we.businesslogic.UserDataProvider#purgeUserData(java.lang.Long)
+	 */
+	@Override
+	public void purgeUserData(Long userId) {
+		for (UserDomain userDomain : getAllByTarget(userId)) {
+			userDomainRepository.delete(userDomain);
+		}
+	}
+
+}

core/src/main/java/de/bstly/we/businesslogic/UserManager.java

@@ -0,0 +1,318 @@
+/**
+ * 
+ */
+package de.bstly.we.businesslogic;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.List;
+import java.util.Map;
+
+import javax.servlet.ServletOutputStream;
+
+import org.apache.commons.lang3.RandomStringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Sort;
+import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.session.FindByIndexNameSessionRepository;
+import org.springframework.session.Session;
+import org.springframework.stereotype.Component;
+import org.springframework.util.Assert;
+import org.springframework.util.StringUtils;
+
+import com.beust.jcommander.internal.Lists;
+
+import de.bstly.we.model.QUser;
+import de.bstly.we.model.User;
+import de.bstly.we.model.UserData;
+import de.bstly.we.model.UserStatus;
+import de.bstly.we.repository.UserRepository;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@Component
+public class UserManager implements UserDataProvider {
+
+	private Logger logger = LoggerFactory.getLogger(UserManager.class);
+
+	@Autowired
+	private UserRepository userRepository;
+	@Autowired
+	private PasswordEncoder passwordEncoder;
+	@Autowired
+	private UserDataManager userDataManager;
+	@Autowired
+	private FindByIndexNameSessionRepository<? extends Session> sessionRepository;
+
+	private QUser qUser = QUser.user;
+
+	@Value("${we.bstly.userdata.directory}")
+	private String userDataDirectory;
+	@Value("${we.bstly.email.domain:we.bstly.de}")
+	private String userEmailDomain;
+
+	/**
+	 * @param id
+	 * @return
+	 */
+	public User get(Long id) {
+		return userRepository.findById(id).orElse(null);
+	}
+
+	/**
+	 * 
+	 * @param username
+	 * @return
+	 */
+	public User getByUsername(String username) {
+		return userRepository.findOne(qUser.username.equalsIgnoreCase(username)).orElse(null);
+	}
+
+	/**
+	 * 
+	 * @param resetToken
+	 * @return
+	 */
+	public User getByResetToken(String resetToken) {
+		return userRepository.findOne(qUser.resetToken.eq(resetToken)).orElse(null);
+	}
+
+	/**
+	 * @param id
+	 * @return
+	 */
+	public String getPasswordHash(Long id) {
+		Assert.isTrue(userRepository.existsById(id), "User with id '" + id + "' not exists!");
+		return userRepository.findById(id).get().getPasswordHash();
+	}
+
+	/**
+	 * 
+	 * @param id
+	 * @param passwordHash
+	 */
+	public User setPassword(Long id, String password) {
+		Assert.isTrue(userRepository.existsById(id), "User with id '" + id + "' not exists!");
+		User user = userRepository.findById(id).get();
+		user.setPasswordHash(passwordEncoder.encode(password));
+		return userRepository.save(user);
+	}
+
+	/**
+	 * 
+	 * @param username
+	 * @param email
+	 * @param password
+	 * @param publicKey
+	 * @return
+	 */
+	public User create(String username, String password, UserStatus status) {
+		Assert.isTrue(!userRepository.exists(qUser.username.equalsIgnoreCase(username)),
+				"Username '" + username + "' already exists!");
+		User user = new User();
+		user.setUsername(username);
+		if (StringUtils.hasText(password)) {
+			user.setPasswordHash(passwordEncoder.encode(password));
+		}
+		user.setDisabled(false);
+		user.setLocked(false);
+		user.setStatus(status);
+		user = userRepository.save(user);
+
+		return user;
+	}
+
+	/**
+	 * 
+	 * @param page
+	 * @param size
+	 * @param sortBy
+	 * @param descending
+	 * @return
+	 */
+	public Page<User> get(int page, int size, String sortBy, boolean descending) {
+		Sort sort = descending ? Sort.by(sortBy).descending() : Sort.by(sortBy).ascending();
+		return userRepository.findAll(PageRequest.of(page, size, sort));
+	}
+
+	/**
+	 * @param user
+	 * @return
+	 */
+	public User update(User user) {
+		Assert.isTrue(userRepository.existsById(user.getId()),
+				"User with id '" + user.getId() + "' not exists!");
+
+		User merge = get(user.getId());
+		merge.setUsername(user.getUsername());
+		merge.setStatus(user.getStatus());
+		merge.setDisabled(user.isDisabled());
+		merge.setLocked(user.isLocked());
+
+		if (merge.isDisabled() || merge.isLocked()) {
+			deleteSessionsForUser(merge);
+		}
+
+		return userRepository.save(merge);
+	}
+
+	/**
+	 * 
+	 * @param user
+	 */
+	public void delete(User user) {
+		Assert.isTrue(userRepository.existsById(user.getId()),
+				"User with id '" + user.getId() + "' not exists!");
+
+		File publicKey = new File(getPublicKeyPath(user.getUsername()));
+		if (publicKey.exists()) {
+			publicKey.delete();
+		}
+
+		deleteSessionsForUser(user);
+
+		userDataManager.purge(user, false);
+	}
+
+	/**
+	 * 
+	 * @param username
+	 * @return
+	 */
+	public String getBstlyEmail(String username) {
+		return username + "@" + userEmailDomain;
+	}
+
+	/**
+	 * 
+	 * @param username
+	 * @param publicKey
+	 */
+	public void writePublicKey(String username, String publicKey) {
+		if (StringUtils.hasText(publicKey)) {
+			if (!userDataDirectory.endsWith(File.separator)) {
+				userDataDirectory += File.separator;
+			}
+
+			File userDir = new File(userDataDirectory + username);
+
+			if (!userDir.exists()) {
+				userDir.mkdirs();
+			}
+
+			try {
+				String publicKeyPath = getPublicKeyPath(username);
+				FileWriter myWriter = new FileWriter(publicKeyPath);
+				myWriter.write(publicKey);
+				myWriter.close();
+				String command = "gpg --import " + publicKeyPath;
+				Runtime.getRuntime().exec(command);
+			} catch (IOException e) {
+				e.printStackTrace();
+			}
+		}
+	}
+
+	/**
+	 * 
+	 * @param username
+	 * @return
+	 */
+	public String getPublicKeyPath(String username) {
+		return userDataDirectory + username + File.separator + "public.key";
+	}
+
+	/**
+	 * @param user
+	 * @param outputStream
+	 */
+	public void passwordReset(User user, ServletOutputStream outputStream) {
+		String resetToken = RandomStringUtils.random(64, true, true);
+		String command = "echo \"" + resetToken + "\" | gpg -ear "
+				+ getBstlyEmail(user.getUsername()) + " --always-trust";
+
+		user.setResetToken(resetToken);
+
+		try {
+			ProcessBuilder b = new ProcessBuilder("/bin/bash", "-c", command);
+			Process process = b.start();
+
+			BufferedReader reader = new BufferedReader(
+					new InputStreamReader(process.getInputStream()));
+			BufferedReader errorReader = new BufferedReader(
+					new InputStreamReader(process.getErrorStream()));
+			int c;
+			while ((c = reader.read()) != -1) {
+				outputStream.write(c);
+			}
+
+			String error = "";
+			String line;
+			while ((line = errorReader.readLine()) != null) {
+				error += line;
+			}
+
+			if (StringUtils.hasText(error)) {
+				logger.warn(error);
+			}
+
+			reader.close();
+			errorReader.close();
+
+		} catch (IOException e) {
+			return;
+		}
+
+		update(user);
+	}
+
+	/**
+	 * 
+	 * @param user
+	 */
+	protected void deleteSessionsForUser(User user) {
+		Map<String, ? extends Session> usersSessions = sessionRepository
+				.findByPrincipalName(user.getUsername());
+		for (Session session : usersSessions.values()) {
+			sessionRepository.deleteById(session.getId());
+		}
+	}
+
+	/*
+	 * @see de.bstly.we.businesslogic.UserDataProvider#getId()
+	 */
+	@Override
+	public String getId() {
+		return "user";
+	}
+
+	/*
+	 * @see de.bstly.we.businesslogic.UserDataProvider#getUserData(java.lang.Long)
+	 */
+	@Override
+	public List<UserData> getUserData(Long userId) {
+		List<UserData> result = Lists.newArrayList();
+		result.add(get(userId));
+		return result;
+	}
+
+	/*
+	 * @see de.bstly.we.businesslogic.UserDataProvider#purgeUserData(java.lang.Long)
+	 */
+	@Override
+	public void purgeUserData(Long userId) {
+		userRepository.deleteById(userId);
+	}
+
+}

core/src/main/java/de/bstly/we/businesslogic/UserProfileFieldManager.java

@@ -0,0 +1,143 @@
+/**
+ * 
+ */
+package de.bstly.we.businesslogic;
+
+import java.util.List;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.domain.Sort;
+import org.springframework.stereotype.Component;
+import org.springframework.util.Assert;
+
+import com.google.common.collect.Lists;
+
+import de.bstly.we.model.QUserProfileField;
+import de.bstly.we.model.UserData;
+import de.bstly.we.model.UserProfileField;
+import de.bstly.we.model.Visibility;
+import de.bstly.we.repository.UserProfileFieldRepository;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+@Component
+public class UserProfileFieldManager implements UserDataProvider {
+
+	@Autowired
+	private UserProfileFieldRepository userProfileFieldRepository;
+	private QUserProfileField qUserProfileField = QUserProfileField.userProfileField;
+
+	/**
+	 * 
+	 * @param target
+	 * @param name
+	 * @return
+	 */
+	public UserProfileField get(Long target, String name) {
+		return userProfileFieldRepository
+				.findOne(qUserProfileField.name.eq(name).and(qUserProfileField.target.eq(target)))
+				.orElse(null);
+	}
+
+	/**
+	 * 
+	 * @param target
+	 * @return
+	 */
+	public List<UserProfileField> getAllByTarget(Long target) {
+		return Lists.newArrayList(userProfileFieldRepository.findAll(
+				qUserProfileField.target.eq(target), Sort.by("index", "name").ascending()));
+	}
+
+	/**
+	 * 
+	 * @param target
+	 * @return
+	 */
+	public List<UserProfileField> getByTargetFiltered(Long target, List<String> names) {
+		return Lists.newArrayList(userProfileFieldRepository.findAll(
+				qUserProfileField.target.eq(target).and(qUserProfileField.name.in(names)),
+				Sort.by("index", "name").ascending()));
+	}
+
+	/**
+	 * 
+	 * @param target
+	 * @param visibilities
+	 * @return
+	 */
+	public List<UserProfileField> getAllByTargetAndVisibilities(Long target,
+			List<Visibility> visibilities) {
+		return Lists.newArrayList(userProfileFieldRepository.findAll(
+				qUserProfileField.target.eq(target)
+						.and(qUserProfileField.visibility.in(visibilities)),
+				Sort.by("index", "name").ascending()));
+	}
+
+	/**
+	 * 
+	 * @param userProfileField
+	 * @return
+	 */
+	public UserProfileField save(UserProfileField userProfileField) {
+		return userProfileFieldRepository.save(userProfileField);
+	}
+
+	/**
+	 * 
+	 * @param target
+	 * @param name
+	 */
+	public void delete(Long target, String name) {
+		Assert.isTrue(
+				userProfileFieldRepository.exists(
+						qUserProfileField.target.eq(target).and(qUserProfileField.name.eq(name))),
+				"ProfileField '" + name + "' for target + '" + target + "' not exists!");
+		UserProfileField delete = userProfileFieldRepository
+				.findOne(qUserProfileField.target.eq(target).and(qUserProfileField.name.eq(name)))
+				.get();
+		userProfileFieldRepository.delete(delete);
+	}
+
+	/**
+	 * 
+	 * @param target
+	 */
+	public void deleteAll(Long target) {
+		userProfileFieldRepository
+				.deleteAll(userProfileFieldRepository.findAll(qUserProfileField.target.eq(target)));
+	}
+
+	/*
+	 * @see de.bstly.we.businesslogic.UserDataProvider#getId()
+	 */
+	@Override
+	public String getId() {
+		return "profilefields";
+	}
+
+	/*
+	 * @see de.bstly.we.businesslogic.UserDataProvider#getUserData(java.lang.Long)
+	 */
+	@Override
+	public List<UserData> getUserData(Long userId) {
+		List<UserData> result = Lists.newArrayList();
+		for (UserProfileField userProfileField : getAllByTarget(userId)) {
+			result.add(userProfileField);
+		}
+		return result;
+	}
+
+	/*
+	 * @see de.bstly.we.businesslogic.UserDataProvider#purgeUserData(java.lang.Long)
+	 */
+	@Override
+	public void purgeUserData(Long userId) {
+		for (UserProfileField userProfileField : getAllByTarget(userId)) {
+			userProfileFieldRepository.delete(userProfileField);
+		}
+	}
+
+}

core/src/main/java/de/bstly/we/businesslogic/UserProfileFields.java

@@ -0,0 +1,15 @@
+/**
+ * 
+ */
+package de.bstly.we.businesslogic;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+public interface UserProfileFields {
+
+	public static final String PROFILE_FIELD_EMAIL = "email";
+	public static final String PROFILE_FIELD_EMAIL_PRIMARY = "primaryEmail";
+	public static final String PROFILE_FIELD_LOCALE = "locale";
+}

core/src/main/java/de/bstly/we/businesslogic/UserTotpManager.java

@@ -0,0 +1,178 @@
+/**
+ * 
+ */
+package de.bstly.we.businesslogic;
+
+import java.util.List;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+import com.beust.jcommander.internal.Lists;
+
+import de.bstly.we.model.QUserTotp;
+import de.bstly.we.model.User;
+import de.bstly.we.model.UserData;
+import de.bstly.we.model.UserTotp;
+import de.bstly.we.repository.UserTotpRepository;
+import de.bstly.we.security.businesslogic.SecondFactorProvider;
+import dev.samstevens.totp.code.CodeVerifier;
+import dev.samstevens.totp.qr.QrData;
+import dev.samstevens.totp.qr.QrDataFactory;
+import dev.samstevens.totp.recovery.RecoveryCodeGenerator;
+import dev.samstevens.totp.secret.SecretGenerator;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+@Component
+public class UserTotpManager implements SecondFactorProvider<UserTotp> {
+
+	@Autowired
+	private UserTotpRepository userTotpRepository;
+	@Autowired
+	private UserManager userManager;
+	@Autowired
+	private SecretGenerator secretGenerator;
+	@Autowired
+	private CodeVerifier verifier;
+	@Autowired
+	private QrDataFactory qrDataFactory;
+	@Autowired
+	private RecoveryCodeGenerator recoveryCodeGenerator;
+	private QUserTotp qUserTotp = QUserTotp.userTotp;
+
+	/*
+	 * @see de.bstly.we.security.businesslogic.SecondFactorProvider#getId()
+	 */
+	@Override
+	public String getId() {
+		return "totp";
+	}
+
+	/*
+	 * @see
+	 * de.bstly.we.security.businesslogic.SecondFactorProvider#supports(java.lang.
+	 * String)
+	 */
+	@Override
+	public boolean supports(String provider) {
+		return getId().equals(provider);
+	}
+
+	/*
+	 * 
+	 * @see
+	 * de.bstly.we.security.businesslogic.SecondFactorProvider#isEnabled(java.lang.
+	 * Long)
+	 */
+	@Override
+	public boolean isEnabled(Long userId) {
+		return userTotpRepository
+				.exists(qUserTotp.target.eq(userId).and(qUserTotp.enabled.isTrue()));
+	}
+
+	/*
+	 * 
+	 * @see
+	 * de.bstly.we.security.businesslogic.SecondFactorProvider#validate(java.lang.
+	 * Long, java.lang.String)
+	 */
+	@Override
+	public boolean validate(Long userId, String code) {
+		UserTotp userTotp = userTotpRepository.findOne(qUserTotp.target.eq(userId)).orElse(null);
+
+		if (userTotp != null) {
+			return verifier.isValidCode(userTotp.getSecret(), code);
+		}
+
+		return false;
+	}
+
+	/*
+	 * @see
+	 * de.bstly.we.security.businesslogic.SecondFactorProvider#getForUser(java.lang.
+	 * Long)
+	 */
+	@Override
+	public UserTotp get(Long userId) {
+		return userTotpRepository.findOne(qUserTotp.target.eq(userId)).orElse(null);
+	}
+
+	/*
+	 * @see
+	 * de.bstly.we.security.businesslogic.SecondFactorProvider#createByUser(java.
+	 * lang.Long)
+	 */
+	@Override
+	public UserTotp create(Long userId) {
+		if (!isEnabled(userId)) {
+			delete(userId);
+			UserTotp userTotp = new UserTotp();
+			userTotp.setTarget(userId);
+			userTotp.setSecret(secretGenerator.generate());
+
+			User user = userManager.get(userId);
+			QrData data = qrDataFactory.newBuilder().label(user.getUsername())
+					.secret(userTotp.getSecret()).issuer("we.bstly").build();
+			userTotp.setQrData(data.getUri());
+			userTotp.setRecoveryCodes(Lists.newArrayList(recoveryCodeGenerator.generateCodes(16)));
+			return userTotpRepository.save(userTotp);
+		}
+		return userTotpRepository.findOne(qUserTotp.target.eq(userId)).orElse(null);
+	}
+
+	/*
+	 * @see
+	 * de.bstly.we.security.businesslogic.SecondFactorProvider#enableByUser(java.
+	 * lang.Long, java.lang.String)
+	 */
+	@Override
+	public boolean enable(Long userId, String code) {
+		if (validate(userId, code)) {
+			UserTotp userTotp = userTotpRepository.findOne(qUserTotp.target.eq(userId))
+					.orElse(null);
+			userTotp.setEnabled(true);
+			userTotpRepository.save(userTotp);
+			return true;
+		}
+		return false;
+	}
+
+	/*
+	 * @see
+	 * de.bstly.we.security.businesslogic.SecondFactorProvider#deleteByUser(java.
+	 * lang.Long)
+	 */
+	@Override
+	public void delete(Long userId) {
+		UserTotp userTotp = get(userId);
+
+		if (userTotp != null) {
+			userTotpRepository.delete(userTotp);
+		}
+	}
+
+	/*
+	 * @see de.bstly.we.businesslogic.UserDataProvider#getUserData(java.lang.Long)
+	 */
+	@Override
+	public List<UserData> getUserData(Long userId) {
+		List<UserData> result = Lists.newArrayList();
+		UserTotp userTotp = get(userId);
+		if (userTotp != null) {
+			result.add(userTotp);
+		}
+		return result;
+	}
+
+	/*
+	 * @see de.bstly.we.businesslogic.UserDataProvider#purgeUserData(java.lang.Long)
+	 */
+	@Override
+	public void purgeUserData(Long userId) {
+		delete(userId);
+	}
+
+}

core/src/main/java/de/bstly/we/businesslogic/support/AbstractModelEventListener.java

@@ -0,0 +1,67 @@
+/**
+ * 
+ */
+package de.bstly.we.businesslogic.support;
+
+import javax.persistence.PostLoad;
+import javax.persistence.PostPersist;
+import javax.persistence.PostRemove;
+import javax.persistence.PostUpdate;
+import javax.persistence.PrePersist;
+import javax.persistence.PreRemove;
+import javax.persistence.PreUpdate;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.ApplicationEventPublisher;
+import org.springframework.stereotype.Component;
+
+import de.bstly.we.event.AbstractModelEvent;
+import de.bstly.we.event.AbstractModelEventType;
+import de.bstly.we.model.AbstractModel;
+
+/**
+ * @author Lurkars
+ *
+ */
+@Component
+public class AbstractModelEventListener {
+
+	@Autowired
+	private ApplicationEventPublisher applicationEventPublisher;
+
+	@PrePersist
+	private void prePersist(AbstractModel model) {
+		applicationEventPublisher.publishEvent(new AbstractModelEvent(AbstractModelEventType.PRE_PERSIST, model));
+	}
+
+	@PreUpdate
+	private void preUpdate(AbstractModel model) {
+		applicationEventPublisher.publishEvent(new AbstractModelEvent(AbstractModelEventType.PRE_UPDATE, model));
+	}
+
+	@PreRemove
+	private void preRemove(AbstractModel model) {
+		applicationEventPublisher.publishEvent(new AbstractModelEvent(AbstractModelEventType.PRE_REMOVE, model));
+	}
+
+	@PostPersist
+	private void postPersist(AbstractModel model) {
+		applicationEventPublisher.publishEvent(new AbstractModelEvent(AbstractModelEventType.POST_PERSIST, model));
+	}
+
+	@PostUpdate
+	private void postUpdate(AbstractModel model) {
+		applicationEventPublisher.publishEvent(new AbstractModelEvent(AbstractModelEventType.POST_UPDATE, model));
+	}
+
+	@PostRemove
+	private void postRemove(AbstractModel model) {
+		applicationEventPublisher.publishEvent(new AbstractModelEvent(AbstractModelEventType.POST_REMOVE, model));
+	}
+
+	@PostLoad
+	private void postLoad(AbstractModel model) {
+		applicationEventPublisher.publishEvent(new AbstractModelEvent(AbstractModelEventType.POST_LOAD, model));
+	}
+
+}

core/src/main/java/de/bstly/we/businesslogic/support/InstantHelper.java

@@ -0,0 +1,83 @@
+/**
+ * 
+ */
+package de.bstly.we.businesslogic.support;
+
+import java.time.Instant;
+import java.time.ZoneOffset;
+import java.time.ZonedDateTime;
+import java.time.temporal.ChronoField;
+import java.time.temporal.ChronoUnit;
+import java.time.temporal.TemporalAmount;
+import java.time.temporal.TemporalUnit;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+public class InstantHelper {
+
+	/**
+	 * 
+	 * @param instant
+	 * @param amount
+	 * @return
+	 */
+	public static Instant plus(Instant instant, TemporalAmount amount) {
+		return ZonedDateTime.ofInstant(instant, ZoneOffset.UTC).plus(amount).toInstant();
+	}
+
+	/**
+	 * 
+	 * @param instant
+	 * @param amountToAdd
+	 * @param unit
+	 * @return
+	 */
+	public static Instant plus(Instant instant, long amountToAdd, TemporalUnit unit) {
+		return ZonedDateTime.ofInstant(instant, ZoneOffset.UTC).plus(amountToAdd, unit).toInstant();
+	}
+
+	/**
+	 * 
+	 * @param instant
+	 * @param amount
+	 * @return
+	 */
+	public static Instant minus(Instant instant, TemporalAmount amount) {
+		return ZonedDateTime.ofInstant(instant, ZoneOffset.UTC).minus(amount).toInstant();
+	}
+
+	/**
+	 * 
+	 * @param instant
+	 * @param amountToAdd
+	 * @param unit
+	 * @return
+	 */
+	public static Instant minus(Instant instant, long amountToAdd, TemporalUnit unit) {
+		return ZonedDateTime.ofInstant(instant, ZoneOffset.UTC).minus(amountToAdd, unit)
+				.toInstant();
+	}
+
+	/**
+	 * 
+	 * @param instant
+	 * @param unit
+	 * @return
+	 */
+	public static Instant truncate(Instant instant, TemporalUnit unit) {
+		if (ChronoUnit.YEARS.equals(unit)) {
+			instant = instant.truncatedTo(ChronoUnit.DAYS);
+			return ZonedDateTime.ofInstant(instant, ZoneOffset.UTC)
+					.with(ChronoField.DAY_OF_YEAR, 1L).toInstant();
+		} else if (ChronoUnit.MONTHS.equals(unit)) {
+			instant = instant.truncatedTo(ChronoUnit.DAYS);
+			return ZonedDateTime.ofInstant(instant, ZoneOffset.UTC)
+					.with(ChronoField.DAY_OF_MONTH, 1L).toInstant();
+		}
+
+		return ZonedDateTime.ofInstant(instant, ZoneOffset.UTC).truncatedTo(unit).toInstant();
+	}
+
+}

core/src/main/java/de/bstly/we/controller/Authentication2FAController.java

@@ -0,0 +1,202 @@
+/**
+ * 
+ */
+package de.bstly.we.controller;
+
+import java.util.List;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PatchMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.beust.jcommander.internal.Lists;
+
+import de.bstly.we.controller.model.SecondFactorProviderModel;
+import de.bstly.we.controller.support.EntityResponseStatusException;
+import de.bstly.we.model.SecondFactor;
+import de.bstly.we.security.businesslogic.SecondFactorProvider;
+import de.bstly.we.security.businesslogic.SecondFactorProviderManager;
+import de.bstly.we.security.businesslogic.SecondFactorRequestProvider;
+import de.bstly.we.security.model.LocalUserDetails;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@RestController
+@RequestMapping("/auth/2fa")
+public class Authentication2FAController extends BaseController {
+
+	@Autowired
+	private SecondFactorProviderManager secondFactorProviderManager;
+
+	/**
+	 * 
+	 * @return
+	 */
+	protected Long getPreAuthenticationId() {
+		Authentication auth = SecurityContextHolder.getContext().getAuthentication();
+		if (auth != null && auth.getPrincipal() instanceof LocalUserDetails) {
+			return ((LocalUserDetails) auth.getPrincipal()).getUserId();
+		}
+
+		return null;
+	}
+
+	/**
+	 * 
+	 * @return
+	 */
+	@GetMapping
+	public List<SecondFactorProviderModel> getEnabled() {
+		Long userId = getPreAuthenticationId();
+		if (userId == null) {
+			throw new EntityResponseStatusException(HttpStatus.UNAUTHORIZED);
+		}
+
+		List<SecondFactorProviderModel> result = Lists.newArrayList();
+
+		for (SecondFactorProvider<?> provider : secondFactorProviderManager.getEnabled(userId)) {
+			result.add(new SecondFactorProviderModel(provider.getId(),
+					provider instanceof SecondFactorRequestProvider<?>));
+		}
+
+		return result;
+	}
+
+	/**
+	 * 
+	 * @return
+	 */
+	@GetMapping("/available")
+	public List<SecondFactorProviderModel> getAvailable() {
+		Long userId = getPreAuthenticationId();
+		if (userId == null) {
+			throw new EntityResponseStatusException(HttpStatus.UNAUTHORIZED);
+		}
+
+		List<SecondFactorProviderModel> result = Lists.newArrayList();
+
+		for (SecondFactorProvider<?> provider : secondFactorProviderManager.getAll()) {
+			result.add(new SecondFactorProviderModel(provider.getId(),
+					provider instanceof SecondFactorRequestProvider<?>));
+		}
+
+		for (SecondFactorProvider<?> provider : secondFactorProviderManager.getEnabled(userId)) {
+			SecondFactorProviderModel enabledProvider = new SecondFactorProviderModel(
+					provider.getId(), provider instanceof SecondFactorRequestProvider<?>);
+			result.remove(enabledProvider);
+		}
+		return result;
+	}
+
+	/**
+	 * 
+	 * @return
+	 */
+	@PreAuthorize("authentication.authenticated")
+	@GetMapping("/{id}")
+	public void isSecondFactorEnabled(@PathVariable("id") String providerId) {
+		SecondFactorProvider<?> provider = secondFactorProviderManager.getProvider(providerId);
+
+		if (provider == null) {
+			throw new EntityResponseStatusException(HttpStatus.UNAUTHORIZED);
+		}
+
+		if (!provider.isEnabled(getCurrentUserId())) {
+			throw new EntityResponseStatusException(HttpStatus.NOT_MODIFIED);
+		}
+	}
+
+	/**
+	 * 
+	 */
+	@PreAuthorize("hasRole('ROLE_PRE_AUTH_USER')")
+	@PostMapping("/{id}")
+	public void requestSecondFactorMail(@PathVariable("id") String providerId) {
+		Long userId = getPreAuthenticationId();
+		if (userId == null) {
+			throw new EntityResponseStatusException(HttpStatus.UNAUTHORIZED);
+		}
+		SecondFactorProvider<?> provider = secondFactorProviderManager.getProvider(providerId);
+
+		if (provider == null) {
+			throw new EntityResponseStatusException(HttpStatus.UNAUTHORIZED);
+		}
+
+		if (!(provider instanceof SecondFactorRequestProvider<?>)) {
+			throw new EntityResponseStatusException(HttpStatus.UNAUTHORIZED);
+		}
+
+		SecondFactorRequestProvider<?> requestProvider = (SecondFactorRequestProvider<?>) provider;
+
+		requestProvider.request(userId);
+	}
+
+	/**
+	 * 
+	 * @return
+	 */
+	@PreAuthorize("authentication.authenticated")
+	@PutMapping("/{id}")
+	public SecondFactor createSecondFactor(@PathVariable("id") String providerId) {
+		SecondFactorProvider<?> provider = secondFactorProviderManager.getProvider(providerId);
+
+		if (provider == null) {
+			throw new EntityResponseStatusException(HttpStatus.UNAUTHORIZED);
+		}
+
+		if (provider.isEnabled(getCurrentUserId())) {
+			throw new EntityResponseStatusException(HttpStatus.CONFLICT);
+		}
+
+		return provider.create(getCurrentUserId());
+	}
+
+	/**
+	 * 
+	 * @return
+	 */
+	@PreAuthorize("authentication.authenticated")
+	@PatchMapping("/{id}")
+	public void enableSecondFactor(@PathVariable("id") String providerId,
+			@RequestBody String token) {
+		SecondFactorProvider<?> provider = secondFactorProviderManager.getProvider(providerId);
+
+		if (provider == null) {
+			throw new EntityResponseStatusException(HttpStatus.UNAUTHORIZED);
+		}
+
+		if (!provider.enable(getCurrentUserId(), token)) {
+			throw new EntityResponseStatusException(HttpStatus.UNAUTHORIZED);
+		}
+	}
+
+	/**
+	 * 
+	 */
+	@PreAuthorize("authentication.authenticated")
+	@DeleteMapping("/{id}")
+	public void removeSecondFactorMail(@PathVariable("id") String providerId) {
+		SecondFactorProvider<?> provider = secondFactorProviderManager.getProvider(providerId);
+
+		if (provider == null) {
+			throw new EntityResponseStatusException(HttpStatus.UNAUTHORIZED);
+		}
+
+		provider.delete(getCurrentUserId());
+	}
+
+}

core/src/main/java/de/bstly/we/controller/AuthenticationController.java

@@ -0,0 +1,107 @@
+/**
+ * 
+ */
+package de.bstly.we.controller;
+
+import java.io.IOException;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.validation.Errors;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import de.bstly.we.businesslogic.UserManager;
+import de.bstly.we.controller.model.PasswordResetModel;
+import de.bstly.we.controller.support.EntityResponseStatusException;
+import de.bstly.we.controller.support.RequestBodyErrors;
+import de.bstly.we.controller.validation.PasswordModelValidator;
+import de.bstly.we.model.User;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@RestController
+@RequestMapping("/auth")
+public class AuthenticationController extends BaseController {
+
+	@Autowired
+	private UserManager userManager;
+	@Autowired
+	private PasswordModelValidator passwordModelValidator;
+
+	/**
+	 * 
+	 * @return
+	 */
+	@GetMapping("/me")
+	public Authentication me() {
+		Authentication auth = SecurityContextHolder.getContext().getAuthentication();
+		return auth;
+	}
+
+	/**
+	 * 
+	 * @param username
+	 * @param req
+	 * @param resp
+	 * @throws IOException
+	 */
+	@PreAuthorize("isAnonymous()")
+	@PostMapping("/password/request")
+	public void passwordRequest(@RequestBody String username, HttpServletRequest req,
+			HttpServletResponse resp) throws IOException {
+		User user = userManager.getByUsername(username);
+
+		if (user != null) {
+			resp.setHeader(HttpHeaders.CONTENT_TYPE, MediaType.TEXT_PLAIN_VALUE);
+			userManager.passwordReset(user, resp.getOutputStream());
+			resp.getOutputStream().flush();
+			resp.getOutputStream().close();
+		}
+	}
+
+	/**
+	 * 
+	 * @param passwordResetModel
+	 * @param req
+	 * @param resp
+	 */
+	@PreAuthorize("isAnonymous()")
+	@PostMapping("/password/reset")
+	public void passwordReset(@RequestBody PasswordResetModel passwordResetModel,
+			HttpServletRequest req, HttpServletResponse resp) {
+		User user = userManager.getByResetToken(passwordResetModel.getToken().trim());
+
+		if (user == null) {
+			throw new EntityResponseStatusException(HttpStatus.UNAUTHORIZED);
+		}
+
+		Errors errors = new RequestBodyErrors(passwordResetModel);
+
+		passwordModelValidator.validate(passwordResetModel, errors);
+
+		if (errors.hasErrors()) {
+			throw new EntityResponseStatusException(errors.getAllErrors(), HttpStatus.CONFLICT);
+		}
+
+		user = userManager.setPassword(user.getId(), passwordResetModel.getPassword());
+		user.setResetToken(null);
+		userManager.update(user);
+
+	}
+
+}

core/src/main/java/de/bstly/we/controller/BaseController.java

@@ -0,0 +1,32 @@
+/**
+ * 
+ */
+package de.bstly.we.controller;
+
+import org.springframework.security.core.Authentication;
+import org.springframework.security.core.context.SecurityContextHolder;
+
+import de.bstly.we.security.model.LocalUserDetails;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+public class BaseController {
+
+	/**
+	 * 
+	 * @return
+	 */
+	public Long getCurrentUserId() {
+		Authentication auth = SecurityContextHolder.getContext().getAuthentication();
+		if (auth != null && auth.isAuthenticated() && auth.getPrincipal() instanceof LocalUserDetails) {
+			LocalUserDetails details = (LocalUserDetails) auth.getPrincipal();
+			return details.getUserId();
+		}
+
+		return null;
+	}
+
+}

core/src/main/java/de/bstly/we/controller/ItemController.java

@@ -0,0 +1,147 @@
+/**
+ * 
+ */
+package de.bstly.we.controller;
+
+import java.util.Map;
+import java.util.Set;
+
+import javax.servlet.http.HttpSession;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.google.common.collect.Maps;
+import com.google.common.collect.Sets;
+import com.google.gson.JsonObject;
+
+import de.bstly.we.businesslogic.PretixManager;
+import de.bstly.we.businesslogic.PretixManager.ITEM_STATUS;
+import de.bstly.we.businesslogic.UserManager;
+import de.bstly.we.controller.model.ItemModel;
+import de.bstly.we.controller.model.ItemResultModel;
+import de.bstly.we.controller.support.EntityResponseStatusException;
+import de.bstly.we.controller.support.TokenSessionManager;
+import de.bstly.we.model.User;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@RestController
+@RequestMapping("/items")
+public class ItemController extends BaseController {
+
+	@Autowired
+	private TokenSessionManager tokenSessionManager;
+	@Autowired
+	private PretixManager pretixManager;
+	@Autowired
+	private UserManager userManager;
+
+	/**
+	 * 
+	 */
+	@GetMapping
+	public Set<ItemModel> getItems(HttpSession session) {
+		Set<ItemModel> result = Sets.newHashSet();
+
+		if (tokenSessionManager.getTokenFromSession(session).isEmpty()) {
+			return result;
+		}
+
+		for (String token : tokenSessionManager.getTokenFromSession(session)) {
+			JsonObject checkInItem = pretixManager.getCheckInItemBySecret(token);
+			JsonObject item = pretixManager.getItem(checkInItem.get("item").getAsInt());
+			ItemModel itemModel = new ItemModel();
+			itemModel.setSecret(token);
+			Map<String, String> name = Maps.newHashMap();
+			for (String lang : item.getAsJsonObject("name").keySet()) {
+				name.put(lang, item.getAsJsonObject("name").get(lang).getAsString());
+			}
+			itemModel.setName(name);
+			result.add(itemModel);
+		}
+
+		return result;
+	}
+
+	/**
+	 * 
+	 * @param secret
+	 */
+	@PutMapping("")
+	public void addItem(@RequestBody String secret, HttpSession session) {
+		ITEM_STATUS status = pretixManager.getItemStatus(secret);
+		if (status == ITEM_STATUS.PAID) {
+			tokenSessionManager.addTokenToSession(secret, session);
+			throw new EntityResponseStatusException(HttpStatus.ACCEPTED);
+		} else if (pretixManager.getItemStatus(secret) == ITEM_STATUS.REDEEMED) {
+			throw new EntityResponseStatusException(HttpStatus.GONE);
+		}
+
+		throw new EntityResponseStatusException(HttpStatus.NOT_ACCEPTABLE);
+	}
+
+	/**
+	 * 
+	 * @param secret
+	 */
+	@DeleteMapping
+	public void removeItem(@RequestBody String secret, HttpSession session) {
+		tokenSessionManager.removeTokenFromSession(secret, session);
+	}
+
+	/**
+	 * 
+	 * @return
+	 */
+	@PreAuthorize("isAuthenticated()")
+	@PostMapping
+	public ItemResultModel redeem(HttpSession session) {
+		if (tokenSessionManager.getTokenFromSession(session).isEmpty()) {
+			throw new EntityResponseStatusException(HttpStatus.NOT_MODIFIED);
+		}
+
+		ItemResultModel result = tokenSessionManager.applyTokens(getCurrentUserId(),
+				tokenSessionManager.getTokenFromSession(session));
+		tokenSessionManager.removeTokensFromSession(session);
+
+		return result;
+	}
+
+	/**
+	 * 
+	 * @param username
+	 * @param session
+	 */
+	@PreAuthorize("isAuthenticated()")
+	@PostMapping("/{username}")
+	public void redeemForUser(@PathVariable("username") String username, HttpSession session) {
+
+		if (tokenSessionManager.getTokenFromSession(session).isEmpty()) {
+			throw new EntityResponseStatusException(HttpStatus.NOT_MODIFIED);
+		}
+
+		User user = userManager.getByUsername(username);
+
+		if (user == null) {
+			throw new EntityResponseStatusException(HttpStatus.CONFLICT);
+		}
+
+		tokenSessionManager.applyTokens(user.getId(),
+				tokenSessionManager.getTokenFromSession(session));
+		tokenSessionManager.removeTokensFromSession(session);
+	}
+
+}

core/src/main/java/de/bstly/we/controller/PermissionController.java

@@ -0,0 +1,81 @@
+/**
+ * 
+ */
+package de.bstly.we.controller;
+
+import java.util.List;
+
+import javax.servlet.http.HttpSession;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.google.common.collect.Lists;
+
+import de.bstly.we.businesslogic.PermissionManager;
+import de.bstly.we.controller.support.TokenSessionManager;
+import de.bstly.we.model.Permission;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@RestController
+@RequestMapping("/permissions")
+public class PermissionController extends BaseController {
+
+	@Autowired
+	private PermissionManager permissionManager;
+	@Autowired
+	private TokenSessionManager tokenSessionManager;
+
+	/**
+	 * 
+	 * @return
+	 */
+	@GetMapping
+	public List<Permission> getPermissions() {
+		if (getCurrentUserId() == null) {
+			return Lists.newArrayList();
+		}
+
+		return permissionManager.getNotExpiresByTargetIgnoreStart(getCurrentUserId());
+	}
+
+	/**
+	 * 
+	 * @return
+	 */
+	@GetMapping("/new")
+	public List<Permission> getNewPermissions(HttpSession session) {
+		List<Permission> permissions = Lists.newArrayList();
+
+		if (tokenSessionManager.getTokenFromSession(session).isEmpty()) {
+			return permissions;
+		}
+
+		for (String token : tokenSessionManager.getTokenFromSession(session)) {
+			permissions
+					.addAll(tokenSessionManager.getPermissionsForToken(getCurrentUserId(), token));
+		}
+
+		return permissions;
+	}
+
+	/**
+	 * 
+	 * @return
+	 */
+	@GetMapping("/all")
+	public List<Permission> getAllPermissions() {
+		if (getCurrentUserId() == null) {
+			return Lists.newArrayList();
+		}
+
+		return permissionManager.getAllByTarget(getCurrentUserId());
+	}
+
+}

core/src/main/java/de/bstly/we/controller/PermissionManagementController.java

@@ -0,0 +1,153 @@
+/**
+ * 
+ */
+package de.bstly.we.controller;
+
+import java.util.List;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PatchMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import de.bstly.we.businesslogic.PermissionManager;
+import de.bstly.we.businesslogic.UserManager;
+import de.bstly.we.controller.support.EntityResponseStatusException;
+import de.bstly.we.model.Permission;
+import de.bstly.we.model.User;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@RestController
+@RequestMapping("/permissions/manage")
+public class PermissionManagementController extends BaseController {
+
+	@Autowired
+	private PermissionManager permissionManager;
+	@Autowired
+	private UserManager userManager;
+
+	/**
+	 * 
+	 * @param username
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@GetMapping("/{username}")
+	public List<Permission> getPermissionsForUser(@PathVariable("username") String username) {
+		User user = userManager.getByUsername(username);
+
+		if (user == null) {
+			throw new EntityResponseStatusException(HttpStatus.NO_CONTENT);
+		}
+
+		return permissionManager.getNotExpiresByTargetIgnoreStart(user.getId());
+	}
+
+	/**
+	 * 
+	 * @param username
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@GetMapping("/{username}/all")
+	public List<Permission> getAllPermissionsForUser(@PathVariable("username") String username) {
+		User user = userManager.getByUsername(username);
+
+		if (user == null) {
+			throw new EntityResponseStatusException(HttpStatus.NO_CONTENT);
+		}
+
+		return permissionManager.getAllByTarget(user.getId());
+	}
+
+	/**
+	 * 
+	 * @param permission
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@PostMapping
+	public Permission createPermission(@RequestBody Permission permission) {
+		return permissionManager.create(permission.getTarget(), permission.getName(),
+				permission.isAddon(), permission.getStarts(), permission.getExpires());
+	}
+
+	/**
+	 * 
+	 * @param permission
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@PatchMapping
+	public Permission updatePermission(@RequestBody Permission permission) {
+		if (permission.getId() == null) {
+			throw new EntityResponseStatusException(HttpStatus.CONFLICT);
+		}
+
+		return permissionManager.update(permission);
+	}
+
+	/**
+	 * 
+	 * @param name
+	 * @param clone
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@PostMapping("/{name}/clone/{clone}")
+	public List<Permission> clone(@PathVariable("name") String name,
+			@PathVariable("clone") String clone) {
+		if (name.equals(clone)) {
+			throw new EntityResponseStatusException(HttpStatus.CONFLICT);
+		}
+
+		return permissionManager.clone(name, clone);
+	}
+
+	/**
+	 * 
+	 * @param permission
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@DeleteMapping
+	public void deletePermission(@RequestBody Permission permission) {
+		if (permissionManager.get(permission.getTarget(), permission.getName()) == null) {
+			throw new EntityResponseStatusException(HttpStatus.NOT_MODIFIED);
+
+		}
+
+		permissionManager.delete(permission.getTarget(), permission.getName());
+	}
+
+	/**
+	 * 
+	 * @param target
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@DeleteMapping("/{target}")
+	public void deleteAll(@PathVariable("target") Long target) {
+		permissionManager.deleteAll(target);
+	}
+
+	/**
+	 * 
+	 * @param name
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@DeleteMapping("/byname/{name}")
+	public void deleteAllByName(@PathVariable("name") String name) {
+		permissionManager.deleteAll(name);
+	}
+
+}

core/src/main/java/de/bstly/we/controller/PermissionMappingController.java

@@ -0,0 +1,152 @@
+/**
+ * 
+ */
+package de.bstly.we.controller;
+
+import java.util.List;
+import java.util.Optional;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.domain.Page;
+import org.springframework.http.HttpStatus;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.validation.Errors;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PatchMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.google.common.collect.Lists;
+
+import de.bstly.we.businesslogic.PermissionMappingManager;
+import de.bstly.we.controller.support.EntityResponseStatusException;
+import de.bstly.we.controller.support.RequestBodyErrors;
+import de.bstly.we.controller.validation.PermissionMappingValidator;
+import de.bstly.we.model.PermissionMapping;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@RestController
+@RequestMapping("/permissions/mappings")
+public class PermissionMappingController extends BaseController {
+
+	@Autowired
+	private PermissionMappingManager permissionMappingManager;
+	@Autowired
+	private PermissionMappingValidator permissionMappingValidator;
+
+	/**
+	 * 
+	 * @param pageParameter
+	 * @param sizeParameter
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@GetMapping
+	public Page<PermissionMapping> getPermissionMappings(
+			@RequestParam("page") Optional<Integer> pageParameter,
+			@RequestParam("size") Optional<Integer> sizeParameter) {
+		return permissionMappingManager.get(pageParameter.orElse(0), sizeParameter.orElse(10), "item", true);
+	}
+
+	/**
+	 * 
+	 * @param permissionMapping
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@PostMapping
+	public PermissionMapping create(@RequestBody PermissionMapping permissionMapping) {
+		Errors errors = new RequestBodyErrors(permissionMapping);
+		permissionMappingValidator.validate(permissionMapping, errors);
+		if (errors.hasErrors()) {
+			throw new EntityResponseStatusException(errors.getAllErrors(), HttpStatus.CONFLICT);
+		}
+
+		return permissionMappingManager.create(permissionMapping.getItem(),
+				permissionMapping.getNames(), permissionMapping.getLifetime(),
+				permissionMapping.getLifetimeUnit(), permissionMapping.isLifetimeRound(),
+				permissionMapping.isAddon(), permissionMapping.getProduct(),
+				permissionMapping.getStartsQuestion(), permissionMapping.getExpiresQuestion());
+	}
+
+	/**
+	 * 
+	 * @param permissionMappings
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@PostMapping("/list")
+	public List<PermissionMapping> createList(
+			@RequestBody List<PermissionMapping> permissionMappings) {
+		List<PermissionMapping> result = Lists.newArrayList();
+		for (PermissionMapping permissionMapping : permissionMappings) {
+			Errors errors = new RequestBodyErrors(permissionMapping);
+			permissionMappingValidator.validate(permissionMapping, errors);
+			if (errors.hasErrors()) {
+				throw new EntityResponseStatusException(errors.getAllErrors(), HttpStatus.CONFLICT);
+			}
+
+			result.add(permissionMappingManager.create(permissionMapping.getItem(),
+					permissionMapping.getNames(), permissionMapping.getLifetime(),
+					permissionMapping.getLifetimeUnit(), permissionMapping.isLifetimeRound(),
+					permissionMapping.isAddon(), permissionMapping.getProduct(),
+					permissionMapping.getStartsQuestion(), permissionMapping.getExpiresQuestion()));
+		}
+		return result;
+	}
+
+	/**
+	 * 
+	 * @param permissionMapping
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@PatchMapping
+	public PermissionMapping update(@RequestBody PermissionMapping permissionMapping) {
+		Errors errors = new RequestBodyErrors(permissionMapping);
+		if (errors.hasErrors()) {
+			throw new EntityResponseStatusException(errors.getAllErrors(), HttpStatus.CONFLICT);
+		}
+
+		return permissionMappingManager.update(permissionMapping);
+	}
+
+	/**
+	 * 
+	 * @param permissionMappings
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@PatchMapping("/list")
+	public List<PermissionMapping> updateList(
+			@RequestBody List<PermissionMapping> permissionMappings) {
+		List<PermissionMapping> result = Lists.newArrayList();
+		for (PermissionMapping permissionMapping : permissionMappings) {
+			Errors errors = new RequestBodyErrors(permissionMapping);
+			if (errors.hasErrors()) {
+				throw new EntityResponseStatusException(errors.getAllErrors(), HttpStatus.CONFLICT);
+			}
+
+			result.add(permissionMappingManager.update(permissionMapping));
+		}
+		return result;
+	}
+
+	/**
+	 * 
+	 * @param permissionMapping
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@DeleteMapping
+	public void delete(@RequestBody PermissionMapping permissionMapping) {
+		permissionMappingManager.delete(permissionMapping.getId());
+	}
+}

core/src/main/java/de/bstly/we/controller/PretixApiController.java

@@ -0,0 +1,71 @@
+/**
+ * 
+ */
+package de.bstly.we.controller;
+
+import java.io.IOException;
+import java.util.Map.Entry;
+
+import javax.servlet.http.HttpServletResponse;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.util.LinkedMultiValueMap;
+import org.springframework.util.MultiValueMap;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.reactive.function.client.WebClientResponseException;
+
+import com.google.common.collect.Lists;
+import com.google.gson.Gson;
+import com.google.gson.JsonIOException;
+
+import de.bstly.we.businesslogic.PretixManager;
+import de.bstly.we.controller.model.PretixRequest;
+import de.bstly.we.controller.support.EntityResponseStatusException;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@RestController
+@RequestMapping("/pretix")
+public class PretixApiController extends BaseController {
+
+	@Autowired
+	private PretixManager pretixManager;
+	private Gson gson = new Gson();
+
+	/**
+	 * 
+	 * @param pretixRequest
+	 * @return
+	 * @throws IOException
+	 * @throws JsonIOException
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@PostMapping("/debug")
+	public void debug(@RequestBody PretixRequest pretixRequest, HttpServletResponse response)
+			throws JsonIOException, IOException {
+		try {
+
+			MultiValueMap<String, String> queryParemeters = new LinkedMultiValueMap<String, String>();
+			if (pretixRequest.getQueryParameters() != null) {
+				for (Entry<String, String> entry : pretixRequest.getQueryParameters().entrySet()) {
+					queryParemeters.put(entry.getKey(), Lists.newArrayList(entry.getValue()));
+				}
+			}
+
+			gson.toJson(
+					pretixManager.request(pretixRequest.getPath(), pretixRequest.getMethod(),
+							gson.toJsonTree(pretixRequest.getPayload()), queryParemeters),
+					response.getWriter());
+		} catch (WebClientResponseException e) {
+			throw new EntityResponseStatusException(e.getMessage(), e.getStatusCode());
+		}
+	}
+
+}

core/src/main/java/de/bstly/we/controller/QuotaController.java

@@ -0,0 +1,114 @@
+/**
+ * 
+ */
+package de.bstly.we.controller;
+
+import java.util.List;
+
+import javax.servlet.http.HttpSession;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.google.common.collect.Lists;
+
+import de.bstly.we.businesslogic.QuotaManager;
+import de.bstly.we.controller.support.TokenSessionManager;
+import de.bstly.we.model.Quota;
+import de.bstly.we.model.QuotaMapping;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@RestController
+@RequestMapping("/quotas")
+public class QuotaController extends BaseController {
+
+	@Autowired
+	private QuotaManager quotaManager;
+	@Autowired
+	private TokenSessionManager tokenSessionManager;
+
+	/**
+	 * 
+	 * @return
+	 */
+	@GetMapping
+	public List<Quota> getQuotas() {
+		if (getCurrentUserId() == null) {
+			return Lists.newArrayList();
+		}
+
+		return quotaManager.getNotExpiresByTarget(getCurrentUserId());
+	}
+
+	/**
+	 * 
+	 * @return
+	 */
+	@GetMapping("/new")
+	public List<Quota> getNewQuotas(HttpSession session) {
+		List<Quota> quotas = Lists.newArrayList();
+
+		if (tokenSessionManager.getTokenFromSession(session).isEmpty()) {
+			return quotas;
+		}
+
+		for (String token : tokenSessionManager.getTokenFromSession(session)) {
+			for (QuotaMapping quotaMapping : tokenSessionManager
+					.getQuotaMappingsForToken(getCurrentUserId(), token)) {
+				boolean added = false;
+				for (Quota quota : quotas) {
+					if (quota.getName().equals(quotaMapping.getName())) {
+						quota.setValue(
+								quotaMapping.isAppend() ? quota.getValue() + quotaMapping.getValue()
+										: quotaMapping.getValue());
+						added = true;
+					}
+				}
+
+				if (!added) {
+					if (quotaManager.hasQuota(getCurrentUserId(), quotaMapping.getName())) {
+						Quota quota = quotaManager.get(getCurrentUserId(), quotaMapping.getName());
+
+						quota.setValue(
+								quotaMapping.isAppend() ? quota.getValue() + quotaMapping.getValue()
+										: quotaMapping.getValue());
+						
+						quotas.add(quota);
+						added = true;
+					}
+					if (!added) {
+						Quota quota = new Quota();
+						quota.setName(quotaMapping.getName());
+						quota.setValue(quotaMapping.getValue());
+						quota.setUnit(quotaMapping.getUnit());
+						quota.setDisposable(quotaMapping.isDisposable());
+						quotas.add(quota);
+					}
+				}
+			}
+
+		}
+
+		return quotas;
+	}
+
+	/**
+	 * 
+	 * @return
+	 */
+	@GetMapping("/all")
+	public List<Quota> getAllQuotas() {
+		if (getCurrentUserId() == null) {
+			return Lists.newArrayList();
+		}
+
+		return quotaManager.getAllByTarget(getCurrentUserId());
+	}
+
+}

core/src/main/java/de/bstly/we/controller/QuotaManagementController.java

@@ -0,0 +1,190 @@
+/**
+ * 
+ */
+package de.bstly.we.controller;
+
+import java.util.List;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PatchMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.beust.jcommander.internal.Lists;
+
+import de.bstly.we.businesslogic.QuotaManager;
+import de.bstly.we.businesslogic.UserManager;
+import de.bstly.we.controller.support.EntityResponseStatusException;
+import de.bstly.we.model.Quota;
+import de.bstly.we.model.User;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@RestController
+@RequestMapping("/quotas/manage")
+public class QuotaManagementController extends BaseController {
+
+	@Autowired
+	private QuotaManager quotaManager;
+	@Autowired
+	private UserManager userManager;
+
+	/**
+	 * 
+	 * @param username
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@GetMapping("/{username}")
+	public List<Quota> getQuotasForUser(@PathVariable("username") String username) {
+		User user = userManager.getByUsername(username);
+
+		if (user == null) {
+			throw new EntityResponseStatusException(HttpStatus.NO_CONTENT);
+		}
+
+		return quotaManager.getNotExpiresByTarget(user.getId());
+	}
+
+	/**
+	 * 
+	 * @param username
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@GetMapping("/{username}/all")
+	public List<Quota> getAllQuotasForUser(@PathVariable("username") String username) {
+		User user = userManager.getByUsername(username);
+
+		if (user == null) {
+			throw new EntityResponseStatusException(HttpStatus.NO_CONTENT);
+		}
+
+		return quotaManager.getAllByTarget(user.getId());
+	}
+
+	/**
+	 * 
+	 * @param name
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@GetMapping("/byname/{name}")
+	public List<Quota> getQuotasByName(@PathVariable("name") String name) {
+		return quotaManager.getAllByName(name);
+	}
+
+	/**
+	 * 
+	 * @param quota
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@PostMapping
+	public Quota createQuota(@RequestBody Quota quota) {
+		if (quotaManager.get(quota.getTarget(), quota.getName()) != null) {
+			throw new EntityResponseStatusException(HttpStatus.CONFLICT);
+		}
+
+		return quotaManager.create(quota.getTarget(), quota.getName(), quota.getValue(),
+				quota.getUnit(), quota.isDisposable());
+	}
+
+	/**
+	 * 
+	 * @param quota
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@PatchMapping
+	public Quota updateQuota(@RequestBody Quota quota) {
+		if (quotaManager.get(quota.getTarget(), quota.getName()) == null) {
+			throw new EntityResponseStatusException(HttpStatus.CONFLICT);
+		}
+
+		return quotaManager.update(quota);
+	}
+
+	/**
+	 * 
+	 * @param quotas
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@PatchMapping("/list")
+	public List<Quota> updateQuotaList(@RequestBody List<Quota> quotas) {
+
+		List<Quota> result = Lists.newArrayList();
+
+		for (Quota quota : quotas) {
+			if (quotaManager.get(quota.getTarget(), quota.getName()) == null) {
+				throw new EntityResponseStatusException(HttpStatus.CONFLICT);
+			}
+			result.add(quotaManager.update(quota));
+		}
+
+		return result;
+	}
+
+	/**
+	 * 
+	 * @param name
+	 * @param clone
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@PostMapping("/{name}/clone/{clone}")
+	public List<Quota> clone(@PathVariable("name") String name, @PathVariable("clone") String clone,
+			@RequestBody long value) {
+		if (name.equals(clone)) {
+			throw new EntityResponseStatusException(HttpStatus.CONFLICT);
+		}
+
+		return quotaManager.clone(name, clone, value);
+	}
+
+	/**
+	 * 
+	 * @param quota
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@DeleteMapping
+	public void deleteQuota(@RequestBody Quota quota) {
+		if (quotaManager.get(quota.getTarget(), quota.getName()) == null) {
+			throw new EntityResponseStatusException(HttpStatus.NOT_MODIFIED);
+		}
+
+		quotaManager.delete(quota.getTarget(), quota.getName());
+	}
+
+	/**
+	 * 
+	 * @param target
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@DeleteMapping("/{target}")
+	public void deleteAll(@PathVariable("target") Long target) {
+		quotaManager.deleteAll(target);
+	}
+
+	/**
+	 * 
+	 * @param name
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@DeleteMapping("/byname/{name}")
+	public void deleteAllByName(@PathVariable("name") String name) {
+		quotaManager.deleteAll(name);
+	}
+
+}

core/src/main/java/de/bstly/we/controller/QuotaMappingController.java

@@ -0,0 +1,136 @@
+/**
+ * 
+ */
+package de.bstly.we.controller;
+
+import java.util.List;
+import java.util.Optional;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.domain.Page;
+import org.springframework.http.HttpStatus;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.validation.Errors;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PatchMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.google.common.collect.Lists;
+
+import de.bstly.we.businesslogic.QuotaMappingManager;
+import de.bstly.we.controller.support.EntityResponseStatusException;
+import de.bstly.we.controller.support.RequestBodyErrors;
+import de.bstly.we.controller.validation.QuotaMappingValidator;
+import de.bstly.we.model.QuotaMapping;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@RestController
+@RequestMapping("/quotas/mappings")
+public class QuotaMappingController extends BaseController {
+
+	@Autowired
+	private QuotaMappingManager quotaMappingManager;
+	@Autowired
+	private QuotaMappingValidator quotaMappingValidator;
+
+	/**
+	 * 
+	 * @param pageParameter
+	 * @param sizeParameter
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@GetMapping
+	public Page<QuotaMapping> getQuotaMappings(
+			@RequestParam("page") Optional<Integer> pageParameter,
+			@RequestParam("size") Optional<Integer> sizeParameter) {
+		return quotaMappingManager.get(pageParameter.orElse(0), sizeParameter.orElse(10), "name",
+				true);
+	}
+
+	/**
+	 * 
+	 * @param userModel
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@PostMapping
+	public QuotaMapping create(@RequestBody QuotaMapping quotaMapping) {
+
+		Errors errors = new RequestBodyErrors(quotaMapping);
+
+		quotaMappingValidator.validate(quotaMapping, errors);
+
+		if (errors.hasErrors()) {
+			throw new EntityResponseStatusException(errors.getAllErrors(), HttpStatus.CONFLICT);
+		}
+
+		return quotaMappingManager.create(quotaMapping.getItems(), quotaMapping.getName(),
+				quotaMapping.getValue(), quotaMapping.getUnit(), quotaMapping.isAppend(),
+				quotaMapping.getProducts(), quotaMapping.isDisposable());
+	}
+
+	/**
+	 * 
+	 * @param userModel
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@PostMapping("/list")
+	public List<QuotaMapping> createList(@RequestBody List<QuotaMapping> quotaMappings) {
+		List<QuotaMapping> result = Lists.newArrayList();
+
+		for (QuotaMapping quotaMapping : quotaMappings) {
+			Errors errors = new RequestBodyErrors(quotaMapping);
+
+			quotaMappingValidator.validate(quotaMapping, errors);
+
+			if (errors.hasErrors()) {
+				throw new EntityResponseStatusException(errors.getAllErrors(), HttpStatus.CONFLICT);
+			}
+
+			result.add(quotaMappingManager.create(quotaMapping.getItems(), quotaMapping.getName(),
+					quotaMapping.getValue(), quotaMapping.getUnit(), quotaMapping.isAppend(),
+					quotaMapping.getProducts(), quotaMapping.isDisposable()));
+		}
+		return result;
+	}
+
+	/**
+	 * 
+	 * @param userModel
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@PatchMapping
+	public QuotaMapping update(@RequestBody QuotaMapping quotaMapping) {
+
+		Errors errors = new RequestBodyErrors(quotaMapping);
+
+		if (errors.hasErrors()) {
+			throw new EntityResponseStatusException(errors.getAllErrors(), HttpStatus.CONFLICT);
+		}
+
+		return quotaMappingManager.update(quotaMapping);
+	}
+
+	/**
+	 * 
+	 * @param userModel
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@DeleteMapping
+	public void delete(@RequestBody QuotaMapping quotaMapping) {
+		quotaMappingManager.delete(quotaMapping.getId());
+	}
+}

core/src/main/java/de/bstly/we/controller/SystemController.java

@@ -0,0 +1,107 @@
+/**
+ * 
+ */
+package de.bstly.we.controller;
+
+import java.util.List;
+import java.util.Optional;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Sort;
+import org.springframework.http.HttpStatus;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import de.bstly.we.businesslogic.PretixManager;
+import de.bstly.we.controller.support.EntityResponseStatusException;
+import de.bstly.we.model.SystemProperty;
+import de.bstly.we.repository.SystemPropertyRepository;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@RestController
+@RequestMapping("/system")
+public class SystemController extends BaseController {
+
+	@Autowired
+	private SystemPropertyRepository systemPropertyRepository;
+	@Autowired
+	private PretixManager pretixManager;
+
+	/**
+	 * 
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@PostMapping("/pretix")
+	public void updatePretixClient() {
+		pretixManager.buildWebClient();
+	}
+
+	/**
+	 * 
+	 * @param pageParameter
+	 * @param sizeParameter
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@GetMapping("/properties")
+	public List<SystemProperty> getProperties(@RequestParam("page") Optional<Integer> pageParameter,
+			@RequestParam("size") Optional<Integer> sizeParameter) {
+		Sort sort = Sort.by("key").ascending();
+		return systemPropertyRepository
+				.findAll(PageRequest.of(pageParameter.orElse(0), sizeParameter.orElse(10), sort))
+				.getContent();
+	}
+
+	/**
+	 * 
+	 * @param key
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@GetMapping("/properties/{key}")
+	public SystemProperty getProperty(@PathVariable("key") String key) {
+		if (!systemPropertyRepository.existsById(key)) {
+			throw new EntityResponseStatusException(HttpStatus.NO_CONTENT);
+		}
+
+		return systemPropertyRepository.findById(key).get();
+	}
+
+	/**
+	 * 
+	 * @param systemProperty
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@PostMapping("/properties")
+	public SystemProperty createOrUpdate(@RequestBody SystemProperty systemProperty) {
+		return systemPropertyRepository.save(systemProperty);
+	}
+
+	/**
+	 * 
+	 * @param key
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@DeleteMapping("/properties/{key}")
+	public void deleteProperty(@PathVariable("key") String key) {
+		if (!systemPropertyRepository.existsById(key)) {
+			throw new EntityResponseStatusException(HttpStatus.NOT_MODIFIED);
+		}
+
+		systemPropertyRepository.deleteById(key);
+	}
+}

core/src/main/java/de/bstly/we/controller/SystemProfileFieldController.java

@@ -0,0 +1,115 @@
+/**
+ * 
+ */
+package de.bstly.we.controller;
+
+import java.util.List;
+import java.util.Optional;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.domain.Page;
+import org.springframework.http.HttpStatus;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.beust.jcommander.internal.Lists;
+
+import de.bstly.we.businesslogic.SystemProfileFieldManager;
+import de.bstly.we.controller.support.EntityResponseStatusException;
+import de.bstly.we.model.SystemProfileField;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+@RestController
+@RequestMapping("/profiles/system")
+public class SystemProfileFieldController extends BaseController {
+
+	@Autowired
+	private SystemProfileFieldManager systemProfileFieldManager;
+
+	/**
+	 * 
+	 * @param pageParameter
+	 * @param sizeParameter
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@GetMapping
+	public Page<SystemProfileField> get(@RequestParam("page") Optional<Integer> pageParameter,
+			@RequestParam("size") Optional<Integer> sizeParameter) {
+		return systemProfileFieldManager.get(pageParameter.orElse(0), sizeParameter.orElse(10),
+				"name", true);
+	}
+
+	/**
+	 * 
+	 * @param name
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@GetMapping("/{name}")
+	public SystemProfileField getByName(@PathVariable("name") String name) {
+		SystemProfileField systemProfileField = systemProfileFieldManager.get(name);
+
+		if (systemProfileField == null) {
+			throw new EntityResponseStatusException(HttpStatus.NO_CONTENT);
+		}
+
+		return systemProfileField;
+	}
+
+	/**
+	 * 
+	 * @param systemProfileField
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@PostMapping
+	public SystemProfileField update(@RequestBody SystemProfileField systemProfileField) {
+		return systemProfileFieldManager.save(systemProfileField);
+	}
+
+	/**
+	 * 
+	 * @param systemProfileField
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@PostMapping("/list")
+	public List<SystemProfileField> updateList(
+			@RequestBody List<SystemProfileField> systemProfileFields) {
+		List<SystemProfileField> result = Lists.newArrayList();
+
+		for (SystemProfileField systemProfileField : systemProfileFields) {
+			result.add(systemProfileFieldManager.save(systemProfileField));
+		}
+
+		return result;
+	}
+
+	/**
+	 * 
+	 * @param name
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@DeleteMapping("/{name}")
+	public void deleteByName(@PathVariable("name") String name) {
+		SystemProfileField systemProfileField = systemProfileFieldManager.get(name);
+
+		if (systemProfileField == null) {
+			throw new EntityResponseStatusException(HttpStatus.NOT_MODIFIED);
+		}
+
+		systemProfileFieldManager.delete(name);
+	}
+
+}

core/src/main/java/de/bstly/we/controller/UserAliasController.java

@@ -0,0 +1,141 @@
+/**
+ * 
+ */
+package de.bstly.we.controller;
+
+import java.util.List;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.validation.Errors;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PatchMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import de.bstly.we.businesslogic.PermissionManager;
+import de.bstly.we.businesslogic.QuotaManager;
+import de.bstly.we.businesslogic.Quotas;
+import de.bstly.we.businesslogic.UserAliasManager;
+import de.bstly.we.controller.support.EntityResponseStatusException;
+import de.bstly.we.controller.support.RequestBodyErrors;
+import de.bstly.we.controller.validation.UserAliasValidator;
+import de.bstly.we.model.Quota;
+import de.bstly.we.model.UserAlias;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+@RestController
+@RequestMapping("/users/aliases")
+public class UserAliasController extends BaseController {
+
+	@Autowired
+	private QuotaManager quotaManager;
+	@Autowired
+	private UserAliasManager userAliasManager;
+	@Autowired
+	private UserAliasValidator userAliasValidator;
+	@Autowired
+	private PermissionManager permissionManager;
+
+	/**
+	 * 
+	 * @param alias
+	 * @return
+	 */
+	@PreAuthorize("isAuthenticated()")
+	@PostMapping
+	public UserAlias createAlias(@RequestBody UserAlias userAlias) {
+		if (!permissionManager.isFullUser(getCurrentUserId())) {
+			throw new EntityResponseStatusException(HttpStatus.FORBIDDEN);
+		}
+
+		Quota aliasCreation = quotaManager.get(getCurrentUserId(), Quotas.ALIAS_CREATION);
+		if (aliasCreation == null || aliasCreation.getValue() < 1) {
+			throw new EntityResponseStatusException(HttpStatus.CONFLICT);
+		}
+
+		userAlias.setTarget(getCurrentUserId());
+
+		Errors errors = new RequestBodyErrors(userAlias);
+
+		userAliasValidator.validate(userAlias, errors);
+		if (errors.hasErrors()) {
+			throw new EntityResponseStatusException(errors.getAllErrors(), HttpStatus.CONFLICT);
+		}
+
+		aliasCreation.setValue(aliasCreation.getValue() - 1);
+		quotaManager.update(aliasCreation);
+
+		return userAliasManager.save(userAlias);
+	}
+
+	/**
+	 * 
+	 * @param alias
+	 * @return
+	 */
+	@PreAuthorize("isAuthenticated()")
+	@PatchMapping
+	public UserAlias updateAlias(@RequestBody UserAlias userAlias) {
+		if (userAlias.getId() == null) {
+			throw new EntityResponseStatusException(HttpStatus.CONFLICT);
+		}
+
+		UserAlias oldAlias = userAliasManager.get(userAlias.getId());
+
+		if (oldAlias == null) {
+			throw new EntityResponseStatusException(HttpStatus.CONFLICT);
+		}
+
+		if (!oldAlias.getTarget().equals(getCurrentUserId())) {
+			throw new EntityResponseStatusException(HttpStatus.FORBIDDEN);
+		}
+
+		oldAlias.setVisibility(userAlias.getVisibility());
+
+		return userAliasManager.save(oldAlias);
+	}
+
+	/**
+	 * 
+	 * @return
+	 */
+	@PreAuthorize("isAuthenticated()")
+	@GetMapping
+	public List<UserAlias> getAliases() {
+		return userAliasManager.getAllByTarget(getCurrentUserId());
+	}
+
+	/**
+	 * 
+	 * @param id
+	 */
+	@PreAuthorize("isAuthenticated()")
+	@DeleteMapping("/{id}")
+	public void deleteAlias(@PathVariable("id") Long id) {
+		UserAlias userAlias = userAliasManager.get(id);
+		if (userAlias == null || !userAlias.getTarget().equals(getCurrentUserId())) {
+			throw new EntityResponseStatusException(HttpStatus.CONFLICT);
+		}
+
+		Quota aliasCreation = quotaManager.get(getCurrentUserId(), Quotas.ALIAS_CREATION);
+		if (aliasCreation == null) {
+			aliasCreation = quotaManager.create(getCurrentUserId(), Quotas.ALIAS_CREATION, 0, "#",
+					true);
+		}
+
+		aliasCreation.setValue(aliasCreation.getValue() + 1);
+		quotaManager.update(aliasCreation);
+
+		userAliasManager.delete(id);
+	}
+
+}

core/src/main/java/de/bstly/we/controller/UserAliasManagementController.java

@@ -0,0 +1,105 @@
+/**
+ * 
+ */
+package de.bstly.we.controller;
+
+import java.util.List;
+import java.util.Optional;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.domain.Page;
+import org.springframework.http.HttpStatus;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.validation.Errors;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import de.bstly.we.businesslogic.UserAliasManager;
+import de.bstly.we.businesslogic.UserManager;
+import de.bstly.we.controller.support.EntityResponseStatusException;
+import de.bstly.we.controller.support.RequestBodyErrors;
+import de.bstly.we.controller.validation.UserAliasValidator;
+import de.bstly.we.model.User;
+import de.bstly.we.model.UserAlias;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+@RestController
+@RequestMapping("/users/aliases/manage")
+public class UserAliasManagementController extends BaseController {
+
+	@Autowired
+	private UserManager userManager;
+	@Autowired
+	private UserAliasManager userAliasManager;
+	@Autowired
+	private UserAliasValidator userAliasValidator;
+
+	/**
+	 * 
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@GetMapping
+	public Page<UserAlias> getAliases(@RequestParam("page") Optional<Integer> pageParameter,
+			@RequestParam("size") Optional<Integer> sizeParameter) {
+		return userAliasManager.get(pageParameter.orElse(0), sizeParameter.orElse(10), "id", true);
+	}
+
+	/**
+	 * 
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@GetMapping("/{username}")
+	public List<UserAlias> getAliasesForUser(@PathVariable("username") String username) {
+		User user = userManager.getByUsername(username);
+
+		if (user == null) {
+			throw new EntityResponseStatusException(HttpStatus.CONFLICT);
+		}
+
+		return userAliasManager.getAllByTarget(user.getId());
+	}
+
+	/**
+	 * 
+	 * @param alias
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@PostMapping
+	public UserAlias createOrUpdateAlias(@RequestBody UserAlias userAlias) {
+		Errors errors = new RequestBodyErrors(userAlias);
+
+		userAliasValidator.validate(userAlias, errors);
+		if (errors.hasErrors()) {
+			throw new EntityResponseStatusException(errors.getAllErrors(), HttpStatus.CONFLICT);
+		}
+
+		return userAliasManager.save(userAlias);
+	}
+
+	/**
+	 * 
+	 * @param id
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@DeleteMapping("/{id}")
+	public void deleteAlias(@PathVariable("id") Long id) {
+		UserAlias userAlias = userAliasManager.get(id);
+		if (userAlias == null) {
+			throw new EntityResponseStatusException(HttpStatus.CONFLICT);
+		}
+		userAliasManager.delete(id);
+	}
+
+}

core/src/main/java/de/bstly/we/controller/UserController.java

@@ -0,0 +1,257 @@
+/**
+ * 
+ */
+package de.bstly.we.controller;
+
+import javax.servlet.http.HttpSession;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.util.StringUtils;
+import org.springframework.validation.Errors;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PatchMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.beust.jcommander.internal.Lists;
+
+import de.bstly.we.businesslogic.PermissionManager;
+import de.bstly.we.businesslogic.PretixManager;
+import de.bstly.we.businesslogic.PretixManager.ITEM_STATUS;
+import de.bstly.we.businesslogic.QuotaManager;
+import de.bstly.we.businesslogic.UserManager;
+import de.bstly.we.businesslogic.UserProfileFieldManager;
+import de.bstly.we.controller.model.ItemResultModel;
+import de.bstly.we.controller.model.PasswordModel;
+import de.bstly.we.controller.model.UserModel;
+import de.bstly.we.controller.support.EntityResponseStatusException;
+import de.bstly.we.controller.support.RequestBodyErrors;
+import de.bstly.we.controller.support.TokenSessionManager;
+import de.bstly.we.controller.validation.PasswordModelValidator;
+import de.bstly.we.controller.validation.UserModelValidator;
+import de.bstly.we.controller.validation.UserProfileFieldValidator;
+import de.bstly.we.model.PermissionMapping;
+import de.bstly.we.model.ProfileFieldType;
+import de.bstly.we.model.User;
+import de.bstly.we.model.UserProfileField;
+import de.bstly.we.model.Visibility;
+import de.bstly.we.model.UserStatus;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@RestController
+@RequestMapping("/users")
+public class UserController extends BaseController {
+
+	@Autowired
+	private UserManager userManager;
+	@Autowired
+	private UserProfileFieldManager userProfileFieldManager;
+	@Autowired
+	private PermissionManager permissionManager;
+	@Autowired
+	private QuotaManager quotaManager;
+	@Autowired
+	private PasswordModelValidator passwordModelValidator;
+	@Autowired
+	private UserModelValidator userModelValidator;
+	@Autowired
+	private UserProfileFieldValidator userProfileFieldValidator;
+	@Autowired
+	private TokenSessionManager tokenSessionManager;
+	@Autowired
+	private PretixManager pretixManager;
+	@Autowired
+	private PasswordEncoder passwordEncoder;
+
+	/**
+	 * 
+	 * @return
+	 */
+	@PreAuthorize("isAuthenticated()")
+	@GetMapping
+	public UserModel get() {
+		User user = userManager.get(getCurrentUserId());
+		UserModel userModel = new UserModel();
+		userModel.setUsername(user.getUsername());
+		userModel.setStatus(user.getStatus());
+		return userModel;
+	}
+
+	/**
+	 * 
+	 * @param userModel
+	 * @param session
+	 * @return
+	 */
+	@PostMapping("/model")
+	public UserModel checkModel(@RequestBody UserModel userModel, HttpSession session) {
+		Errors errors = new RequestBodyErrors(userModel);
+
+		userModelValidator.validate(userModel, errors);
+		if (errors.hasErrors()) {
+			throw new EntityResponseStatusException(errors.getAllErrors(), HttpStatus.CONFLICT);
+		}
+
+		return userModel;
+	}
+
+	/**
+	 * 
+	 * @param userModel
+	 * @param session
+	 * @return
+	 */
+	@PreAuthorize("isAnonymous()")
+	@PostMapping
+	public UserModel register(@RequestBody UserModel userModel, HttpSession session) {
+		Errors errors = new RequestBodyErrors(userModel);
+
+		if (tokenSessionManager.getTokenFromSession(session).isEmpty()) {
+			if (StringUtils.hasText(userModel.getToken())) {
+				String secret = userModel.getToken();
+				ITEM_STATUS status = pretixManager.getItemStatus(secret);
+				if (status == ITEM_STATUS.PAID) {
+					tokenSessionManager.addTokenToSession(secret, session);
+				} else if (pretixManager.getItemStatus(secret) == ITEM_STATUS.REDEEMED) {
+					throw new EntityResponseStatusException(HttpStatus.GONE);
+				}
+			} else {
+				throw new EntityResponseStatusException(HttpStatus.UNAUTHORIZED);
+			}
+		}
+
+		boolean register = false;
+
+		for (String token : tokenSessionManager.getTokenFromSession(session)) {
+			for (PermissionMapping permissionMapping : tokenSessionManager
+					.getPermissionMappingsForToken(getCurrentUserId(), token)) {
+				if (!permissionMapping.isAddon()) {
+					register = true;
+					break;
+				}
+			}
+		}
+
+		if (!register) {
+			throw new EntityResponseStatusException(HttpStatus.UNAUTHORIZED);
+		}
+
+		userModelValidator.validate(userModel, errors);
+		passwordModelValidator.validate(userModel, errors);
+
+		if (userModel.getProfileFields() == null) {
+			userModel.setProfileFields(Lists.newArrayList());
+		}
+
+		if (userModel.getStatus() == null) {
+			userModel.setStatus(UserStatus.NORMAL);
+		}
+
+		for (UserProfileField userProfileField : userModel.getProfileFields()) {
+			userProfileFieldValidator.validate(userProfileField, errors);
+		}
+
+		if (errors.hasErrors()) {
+			throw new EntityResponseStatusException(errors.getAllErrors(), HttpStatus.CONFLICT);
+		}
+
+		User user = userManager.create(userModel.getUsername(), userModel.getPassword(),
+				userModel.getStatus());
+
+		for (UserProfileField userProfileField : userModel.getProfileFields()) {
+			userProfileField.setTarget(user.getId());
+			if (userProfileField.getType() == null) {
+				userProfileField.setType(ProfileFieldType.TEXT);
+			}
+
+			if (userProfileField.getVisibility() == null) {
+				userProfileField.setVisibility(Visibility.PRIVATE);
+			}
+
+			userProfileField = userProfileFieldManager.save(userProfileField);
+		}
+
+		UserModel responseModel = new UserModel();
+		responseModel.setUsername(user.getUsername());
+		responseModel.setStatus(user.getStatus());
+		ItemResultModel result = tokenSessionManager.applyTokens(user.getId(),
+				tokenSessionManager.getTokenFromSession(session));
+		responseModel.setPermissionMappings(result.getPermissionMappings());
+		responseModel.setPermissions(permissionManager.getNotExpiresByTarget(user.getId()));
+		responseModel.setQuotaMappings(result.getQuotaMappings());
+		responseModel.setQuotas(quotaManager.getNotExpiresByTarget(user.getId()));
+		responseModel.setProfileFields(userProfileFieldManager.getAllByTarget(user.getId()));
+
+		tokenSessionManager.removeTokensFromSession(session);
+
+		return responseModel;
+	}
+
+	/**
+	 * 
+	 * @param passwordModel
+	 */
+	@PreAuthorize("isAuthenticated()")
+	@PatchMapping("/password")
+	public void changePassword(@RequestBody PasswordModel passwordModel) {
+
+		Errors errors = new RequestBodyErrors(passwordModel);
+
+		User user = userManager.get(getCurrentUserId());
+
+		if (!StringUtils.hasText(passwordModel.getOld()) || !passwordEncoder
+				.matches(passwordModel.getOld(), userManager.getPasswordHash(user.getId()))) {
+			throw new EntityResponseStatusException(HttpStatus.UNAUTHORIZED);
+		}
+
+		passwordModelValidator.validate(passwordModel, errors);
+
+		if (errors.hasErrors()) {
+			throw new EntityResponseStatusException(errors.getAllErrors(), HttpStatus.CONFLICT);
+		}
+
+		userManager.setPassword(user.getId(), passwordModel.getPassword());
+	}
+
+	/**
+	 * 
+	 * @param userModel
+	 */
+	@PreAuthorize("isAuthenticated()")
+	@PatchMapping
+	public void update(@RequestBody UserModel userModel) {
+		User user = userManager.get(getCurrentUserId());
+		if (StringUtils.hasText(userModel.getOld())) {
+			Errors errors = new RequestBodyErrors(userModel);
+			if (!passwordEncoder.matches(userModel.getOld(),
+					userManager.getPasswordHash(getCurrentUserId()))) {
+				throw new EntityResponseStatusException(HttpStatus.UNAUTHORIZED);
+			}
+
+			passwordModelValidator.validate(userModel, errors);
+
+			if (errors.hasErrors()) {
+				throw new EntityResponseStatusException(errors.getAllErrors(), HttpStatus.CONFLICT);
+			}
+
+			user = userManager.setPassword(user.getId(), userModel.getPassword());
+		}
+
+		if (userModel.getStatus() != null) {
+			user.setStatus(userModel.getStatus());
+		}
+
+		user = userManager.update(user);
+
+	}
+
+}

core/src/main/java/de/bstly/we/controller/UserDomainController.java

@@ -0,0 +1,129 @@
+/**
+ * 
+ */
+package de.bstly.we.controller;
+
+import java.util.List;
+
+import org.apache.commons.lang3.RandomStringUtils;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.validation.Errors;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PatchMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import de.bstly.we.businesslogic.PermissionManager;
+import de.bstly.we.businesslogic.UserDomainManager;
+import de.bstly.we.controller.support.EntityResponseStatusException;
+import de.bstly.we.controller.support.RequestBodyErrors;
+import de.bstly.we.controller.validation.UserDomainValidator;
+import de.bstly.we.model.UserDomain;
+import de.bstly.we.model.Visibility;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+@RestController
+@RequestMapping("/users/domains")
+public class UserDomainController extends BaseController {
+
+	@Autowired
+	private UserDomainManager userDomainManager;
+	@Autowired
+	private UserDomainValidator userDomainValidator;
+	@Autowired
+	private PermissionManager permissionManager;
+
+	/**
+	 * 
+	 * @param userDomain
+	 * @return
+	 */
+	@PreAuthorize("isAuthenticated()")
+	@PostMapping
+	public UserDomain createDomain(@RequestBody UserDomain userDomain) {
+		if (!permissionManager.isFullUser(getCurrentUserId())) {
+			throw new EntityResponseStatusException(HttpStatus.FORBIDDEN);
+		}
+		
+		
+		if (userDomain.getVisibility() == null) {
+			userDomain.setVisibility(Visibility.PRIVATE);
+		}
+
+		userDomain.setTarget(getCurrentUserId());
+		userDomain.setValidated(false);
+		userDomain.setSecret(
+				RandomStringUtils.random(UserDomainManager.DEFAULT_SECRET_LENGTH, true, true));
+
+		Errors errors = new RequestBodyErrors(userDomain);
+
+		userDomainValidator.validate(userDomain, errors);
+		if (errors.hasErrors()) {
+			throw new EntityResponseStatusException(errors.getAllErrors(), HttpStatus.CONFLICT);
+		}
+
+		return userDomainManager.save(userDomain);
+	}
+
+	/**
+	 * 
+	 * @param userDomain
+	 * @return
+	 */
+	@PreAuthorize("isAuthenticated()")
+	@PatchMapping
+	public UserDomain updateDomain(@RequestBody UserDomain userDomain) {
+		if (userDomain.getId() == null) {
+			throw new EntityResponseStatusException(HttpStatus.CONFLICT);
+		}
+
+		UserDomain oldDomain = userDomainManager.get(userDomain.getId());
+
+		if (oldDomain == null) {
+			throw new EntityResponseStatusException(HttpStatus.CONFLICT);
+		}
+		
+		if (!oldDomain.getTarget().equals(getCurrentUserId())) {
+			throw new EntityResponseStatusException(HttpStatus.FORBIDDEN);
+		}
+
+		oldDomain.setVisibility(userDomain.getVisibility());
+
+		return userDomainManager.save(oldDomain);
+	}
+
+	/**
+	 * 
+	 * @return
+	 */
+	@PreAuthorize("isAuthenticated()")
+	@GetMapping
+	public List<UserDomain> getDomains() {
+		return userDomainManager.getAllByTarget(getCurrentUserId());
+	}
+
+	/**
+	 * 
+	 * @param id
+	 */
+	@PreAuthorize("isAuthenticated()")
+	@DeleteMapping("/{id}")
+	public void deleteDomain(@PathVariable("id") Long id) {
+		UserDomain userDomain = userDomainManager.get(id);
+		if (userDomain == null || !userDomain.getTarget().equals(getCurrentUserId())) {
+			throw new EntityResponseStatusException(HttpStatus.CONFLICT);
+		}
+
+		userDomainManager.delete(id);
+	}
+
+}

core/src/main/java/de/bstly/we/controller/UserDomainManagementController.java

@@ -0,0 +1,142 @@
+/**
+ * 
+ */
+package de.bstly.we.controller;
+
+import java.util.List;
+import java.util.Optional;
+
+import javax.naming.NamingException;
+
+import org.apache.commons.lang3.RandomStringUtils;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.domain.Page;
+import org.springframework.http.HttpStatus;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.validation.Errors;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import de.bstly.we.businesslogic.UserDomainManager;
+import de.bstly.we.businesslogic.UserManager;
+import de.bstly.we.controller.support.EntityResponseStatusException;
+import de.bstly.we.controller.support.RequestBodyErrors;
+import de.bstly.we.controller.validation.UserDomainValidator;
+import de.bstly.we.model.User;
+import de.bstly.we.model.UserDomain;
+import de.bstly.we.model.Visibility;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+@RestController
+@RequestMapping("/users/domains/manage")
+public class UserDomainManagementController extends BaseController {
+
+	@Autowired
+	private UserManager userManager;
+	@Autowired
+	private UserDomainManager userDomainManager;
+	@Autowired
+	private UserDomainValidator userDomainValidator;
+
+	/**
+	 * 
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@GetMapping
+	public Page<UserDomain> getDomains(@RequestParam("page") Optional<Integer> pageParameter,
+			@RequestParam("size") Optional<Integer> sizeParameter) {
+		return userDomainManager.get(pageParameter.orElse(0), sizeParameter.orElse(10), "id", true);
+	}
+
+	/**
+	 * 
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@GetMapping("/{username}")
+	public List<UserDomain> getDomainsForUser(@PathVariable("username") String username) {
+		User user = userManager.getByUsername(username);
+
+		if (user == null) {
+			throw new EntityResponseStatusException(HttpStatus.CONFLICT);
+		}
+
+		return userDomainManager.getAllByTarget(user.getId());
+	}
+
+	/**
+	 * 
+	 * @param alias
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@PostMapping
+	public UserDomain createOrUpdateDomain(@RequestBody UserDomain userDomain) {
+
+		if (userDomain.getVisibility() == null) {
+			userDomain.setVisibility(Visibility.PRIVATE);
+		}
+
+		Errors errors = new RequestBodyErrors(userDomain);
+		userDomainValidator.validate(userDomain, errors);
+		if (errors.hasErrors()) {
+			throw new EntityResponseStatusException(errors.getAllErrors(), HttpStatus.CONFLICT);
+		}
+
+		if (userDomain.getId() == null) {
+			userDomain.setValidated(false);
+			userDomain.setSecret(
+					RandomStringUtils.random(UserDomainManager.DEFAULT_SECRET_LENGTH, true, true));
+		}
+
+		return userDomainManager.save(userDomain);
+	}
+
+	/**
+	 * 
+	 * @param id
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@DeleteMapping("/{id}")
+	public void deleteDomain(@PathVariable("id") Long id) {
+		UserDomain userDomain = userDomainManager.get(id);
+		if (userDomain == null) {
+			throw new EntityResponseStatusException(HttpStatus.CONFLICT);
+		}
+		userDomainManager.delete(id);
+	}
+
+	/**
+	 * 
+	 * @param id
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@PostMapping("/validate/{id}")
+	public void validate(@PathVariable("id") Long id) {
+		UserDomain userDomain = userDomainManager.get(id);
+		if (userDomain == null) {
+			throw new EntityResponseStatusException(HttpStatus.CONFLICT);
+		}
+
+		try {
+			if (userDomainManager.validate(userDomain)) {
+				throw new EntityResponseStatusException(HttpStatus.ACCEPTED);
+			}
+		} catch (NamingException e) {
+			e.printStackTrace();
+		}
+
+		throw new EntityResponseStatusException(HttpStatus.NOT_ACCEPTABLE);
+	}
+
+}

core/src/main/java/de/bstly/we/controller/UserManagementController.java

@@ -0,0 +1,229 @@
+/**
+ * 
+ */
+package de.bstly.we.controller;
+
+import java.time.Instant;
+import java.util.Optional;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.domain.Page;
+import org.springframework.http.HttpStatus;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.validation.Errors;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PatchMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.beust.jcommander.internal.Lists;
+
+import de.bstly.we.businesslogic.PermissionManager;
+import de.bstly.we.businesslogic.QuotaManager;
+import de.bstly.we.businesslogic.UserDataManager;
+import de.bstly.we.businesslogic.UserManager;
+import de.bstly.we.businesslogic.UserProfileFieldManager;
+import de.bstly.we.businesslogic.support.InstantHelper;
+import de.bstly.we.controller.model.UserModel;
+import de.bstly.we.controller.support.EntityResponseStatusException;
+import de.bstly.we.controller.support.RequestBodyErrors;
+import de.bstly.we.controller.validation.PasswordModelValidator;
+import de.bstly.we.controller.validation.UserModelValidator;
+import de.bstly.we.controller.validation.UserProfileFieldValidator;
+import de.bstly.we.model.Permission;
+import de.bstly.we.model.PermissionMapping;
+import de.bstly.we.model.ProfileFieldType;
+import de.bstly.we.model.Quota;
+import de.bstly.we.model.QuotaMapping;
+import de.bstly.we.model.User;
+import de.bstly.we.model.UserProfileField;
+import de.bstly.we.model.UserStatus;
+import de.bstly.we.model.Visibility;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@RestController
+@RequestMapping("/users/manage")
+public class UserManagementController extends BaseController {
+
+	@Autowired
+	private UserManager userManager;
+	@Autowired
+	private PermissionManager permissionManager;
+	@Autowired
+	private QuotaManager quotaManager;
+	@Autowired
+	private UserProfileFieldManager userProfileFieldManager;
+	@Autowired
+	private PasswordModelValidator passwordModelValidator;
+	@Autowired
+	private UserModelValidator userModelValidator;
+	@Autowired
+	private UserProfileFieldValidator userProfileFieldValidator;
+	@Autowired
+	private UserDataManager userDataManager;
+
+	/**
+	 * 
+	 * @param pageParameter
+	 * @param sizeParameter
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@GetMapping
+	public Page<User> getUsers(@RequestParam("page") Optional<Integer> pageParameter,
+			@RequestParam("size") Optional<Integer> sizeParameter) {
+		return userManager.get(pageParameter.orElse(0), sizeParameter.orElse(10), "username", true);
+	}
+
+	/**
+	 * 
+	 * @param username
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@GetMapping("/{username}")
+	public User getUserByUsername(@PathVariable("username") String username) {
+		User user = userManager.getByUsername(username);
+
+		if (user == null) {
+			throw new EntityResponseStatusException(HttpStatus.NO_CONTENT);
+		}
+
+		return user;
+	}
+
+	/**
+	 * 
+	 * @param userModel
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@PostMapping
+	public User create(@RequestBody UserModel userModel) {
+		Errors errors = new RequestBodyErrors(userModel);
+		userModelValidator.validate(userModel, errors);
+		passwordModelValidator.validate(userModel, errors);
+
+		if (userModel.getStatus() == null) {
+			userModel.setStatus(UserStatus.SLEEP);
+		}
+
+		if (userModel.getProfileFields() == null) {
+			userModel.setProfileFields(Lists.newArrayList());
+		}
+
+		for (UserProfileField userProfileField : userModel.getProfileFields()) {
+			userProfileFieldValidator.validate(userProfileField, errors);
+		}
+
+		if (errors.hasErrors()) {
+			throw new EntityResponseStatusException(errors.getAllErrors(), HttpStatus.CONFLICT);
+		}
+
+		User user = userManager.create(userModel.getUsername(), userModel.getPassword(),
+				userModel.getStatus());
+
+		if (userModel.getPermissionMappings() != null) {
+			for (PermissionMapping permissionMapping : userModel.getPermissionMappings()) {
+				for (String name : permissionMapping.getNames()) {
+					permissionManager.create(user.getId(), name, permissionMapping.isAddon(), null,
+							InstantHelper.plus(Instant.now(), permissionMapping.getLifetime(),
+									permissionMapping.getLifetimeUnit()));
+				}
+			}
+		}
+
+		if (userModel.getPermissions() != null) {
+			for (Permission permission : userModel.getPermissions()) {
+				permissionManager.create(user.getId(), permission.getName(), permission.isAddon(),
+						permission.getStarts(), permission.getExpires());
+			}
+		}
+
+		if (userModel.getQuotaMappings() != null) {
+			for (QuotaMapping quotaMapping : userModel.getQuotaMappings()) {
+				quotaManager.create(user.getId(), quotaMapping.getName(), quotaMapping.getValue(),
+						quotaMapping.getUnit(), quotaMapping.isDisposable());
+			}
+		}
+
+		if (userModel.getQuotas() != null) {
+			for (Quota quota : userModel.getQuotas()) {
+				quotaManager.create(user.getId(), quota.getName(), quota.getValue(),
+						quota.getUnit(), quota.isDisposable());
+			}
+		}
+
+		for (UserProfileField userProfileField : userModel.getProfileFields()) {
+			userProfileField.setTarget(user.getId());
+			if (userProfileField.getType() == null) {
+				userProfileField.setType(ProfileFieldType.TEXT);
+			}
+
+			if (userProfileField.getVisibility() == null) {
+				userProfileField.setVisibility(Visibility.PRIVATE);
+			}
+
+			userProfileField = userProfileFieldManager.save(userProfileField);
+		}
+
+		return user;
+	}
+
+	/**
+	 * 
+	 * @param user
+	 * @return
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@PatchMapping
+	public User update(@RequestBody User user) {
+		return userManager.update(user);
+	}
+
+	/**
+	 * 
+	 * @param username
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@DeleteMapping("/{username}")
+	public void deleteUserByUsername(@PathVariable("username") String username) {
+		User user = userManager.getByUsername(username);
+
+		if (user == null) {
+			throw new EntityResponseStatusException(HttpStatus.NOT_MODIFIED);
+		}
+
+		userManager.delete(user);
+	}
+
+	/**
+	 * 
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@PostMapping("/purge")
+	public void purge(@RequestParam("username") Optional<String> username,
+			@RequestParam("dry") Optional<Boolean> dry) {
+
+		if (username.isPresent()) {
+			User user = userManager.getByUsername(username.get());
+
+			if (user == null) {
+				throw new EntityResponseStatusException(HttpStatus.NOT_MODIFIED);
+			}
+
+			userDataManager.purge(user, dry.isPresent() && dry.get());
+		} else {
+			userDataManager.purge();
+		}
+	}
+}

core/src/main/java/de/bstly/we/controller/UserProfileFieldController.java

@@ -0,0 +1,284 @@
+/**
+ * 
+ */
+package de.bstly.we.controller;
+
+import java.util.List;
+import java.util.Optional;
+
+import org.apache.commons.lang3.RandomUtils;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.validation.Errors;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.beust.jcommander.internal.Lists;
+
+import de.bstly.we.businesslogic.PermissionManager;
+import de.bstly.we.businesslogic.UserAliasManager;
+import de.bstly.we.businesslogic.UserManager;
+import de.bstly.we.businesslogic.UserProfileFieldManager;
+import de.bstly.we.controller.model.ProfileModel;
+import de.bstly.we.controller.support.EntityResponseStatusException;
+import de.bstly.we.controller.support.RequestBodyErrors;
+import de.bstly.we.controller.validation.UserProfileFieldValidator;
+import de.bstly.we.model.ProfileFieldType;
+import de.bstly.we.model.User;
+import de.bstly.we.model.UserAlias;
+import de.bstly.we.model.UserProfileField;
+import de.bstly.we.model.Visibility;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+@RestController
+@RequestMapping("/profiles")
+public class UserProfileFieldController extends BaseController {
+
+	@Autowired
+	private UserProfileFieldManager userProfileFieldManager;
+	@Autowired
+	private UserManager userManager;
+	@Autowired
+	private UserAliasManager userAliasManager;
+	@Autowired
+	private UserProfileFieldValidator userProfileFieldModelValidator;
+	@Autowired
+	private PermissionManager permissionManager;
+
+	/**
+	 * 
+	 * @return
+	 */
+	@PreAuthorize("isAuthenticated()")
+	@GetMapping
+	public List<UserProfileField> get(@RequestParam("filter") Optional<String> filter) {
+		if (filter.isEmpty()) {
+			return userProfileFieldManager.getAllByTarget(getCurrentUserId());
+		}
+
+		return userProfileFieldManager.getByTargetFiltered(getCurrentUserId(),
+				Lists.newArrayList(filter.get().split(",")));
+	}
+
+	/**
+	 * 
+	 * @return
+	 */
+	@PreAuthorize("isAuthenticated()")
+	@GetMapping("/field/{name}")
+	public UserProfileField getField(@PathVariable("name") String name) {
+		UserProfileField userProfileField = userProfileFieldManager.get(getCurrentUserId(), name);
+
+		if (userProfileField == null) {
+			throw new EntityResponseStatusException(HttpStatus.NO_CONTENT);
+		}
+
+		return userProfileField;
+	}
+
+	/**
+	 * 
+	 * @return
+	 */
+	@GetMapping("/{username}")
+	public ProfileModel getForUser(@PathVariable("username") String username) {
+
+		Long currentUserId = getCurrentUserId();
+		User user = userManager.getByUsername(username);
+
+		if (user == null) {
+			UserAlias userAlias = userAliasManager.getByAlias(username);
+			if (userAlias != null) {
+				switch (userAlias.getVisibility()) {
+				case PRIVATE:
+					if (currentUserId != null && currentUserId.equals(userAlias.getTarget())) {
+						user = userManager.get(userAlias.getTarget());
+					}
+					break;
+				case PROTECTED:
+					if (currentUserId != null && permissionManager.isFullUser(getCurrentUserId())) {
+						user = userManager.get(userAlias.getTarget());
+					}
+					break;
+				case PUBLIC:
+					user = userManager.get(userAlias.getTarget());
+					break;
+				}
+			}
+		}
+
+		if (user == null) {
+			throttleForbidden();
+		}
+
+		List<UserProfileField> profileFields = Lists.newArrayList();
+
+		List<Visibility> visibilities = Lists.newArrayList(Visibility.PUBLIC);
+
+		if (currentUserId != null) {
+			visibilities.add(Visibility.PROTECTED);
+			if (currentUserId.equals(user.getId())) {
+				visibilities.add(Visibility.PRIVATE);
+			}
+
+		}
+
+		profileFields.addAll(
+				userProfileFieldManager.getAllByTargetAndVisibilities(user.getId(), visibilities));
+
+		if (profileFields.isEmpty()) {
+			throttleForbidden();
+		}
+
+		List<String> aliases = Lists.newArrayList();
+
+		for (UserAlias userAlias : userAliasManager.getAllByTarget(user.getId())) {
+			switch (userAlias.getVisibility()) {
+			case PRIVATE:
+				if (currentUserId != null && currentUserId.equals(user.getId())) {
+					aliases.add(userAlias.getAlias());
+				}
+				break;
+			case PROTECTED:
+				if (currentUserId != null) {
+					aliases.add(userAlias.getAlias());
+				}
+				break;
+			case PUBLIC:
+				aliases.add(userAlias.getAlias());
+				break;
+			}
+		}
+
+		ProfileModel profileModel = new ProfileModel();
+
+		profileModel.setUsername(user.getUsername());
+		profileModel.setProfileFields(profileFields);
+		profileModel.setAliases(aliases);
+
+		return profileModel;
+	}
+
+	/**
+	 * 
+	 * @return
+	 */
+	@GetMapping("/{username}/field/{name}")
+	public UserProfileField getFieldForUser(@PathVariable("username") String username,
+			@PathVariable("name") String name) {
+
+		User user = userManager.getByUsername(username);
+
+		if (user == null) {
+			throttleForbidden();
+		}
+
+		UserProfileField userProfileField = userProfileFieldManager.get(user.getId(), name);
+
+		if (userProfileField == null) {
+			throttleForbidden();
+		}
+
+		Long currentUserId = getCurrentUserId();
+
+		if (currentUserId == null && !Visibility.PUBLIC.equals(userProfileField.getVisibility())) {
+			throttleForbidden();
+		}
+
+		if (currentUserId != null && !currentUserId.equals(user.getId())
+				&& Visibility.PRIVATE.equals(userProfileField.getVisibility())) {
+			throttleForbidden();
+		}
+
+		return userProfileField;
+	}
+
+	/**
+	 * 
+	 * @param userProfileField
+	 * @return
+	 */
+	@PreAuthorize("isAuthenticated()")
+	@PostMapping
+	public UserProfileField createOrupdate(@RequestBody UserProfileField userProfileField) {
+
+		UserProfileField oldUserProfileField = userProfileFieldManager.get(getCurrentUserId(),
+				userProfileField.getName());
+
+		userProfileField.setTarget(getCurrentUserId());
+
+		Errors errors = new RequestBodyErrors(userProfileField);
+
+		userProfileFieldModelValidator.validate(userProfileField, errors);
+
+		if (errors.hasErrors()) {
+			throw new EntityResponseStatusException(errors.getAllErrors(), HttpStatus.CONFLICT);
+		}
+
+		if (oldUserProfileField == null) {
+			if (userProfileField.getType() == null) {
+				userProfileField.setType(ProfileFieldType.TEXT);
+			}
+
+			if (userProfileField.getVisibility() == null) {
+				userProfileField.setVisibility(Visibility.PRIVATE);
+			}
+
+			return userProfileFieldManager.save(userProfileField);
+		} else {
+			oldUserProfileField.setValue(userProfileField.getValue());
+			oldUserProfileField.setBlob(userProfileField.getBlob());
+
+			if (userProfileField.getType() != null) {
+				oldUserProfileField.setType(userProfileField.getType());
+			}
+
+			if (userProfileField.getVisibility() != null) {
+				oldUserProfileField.setVisibility(userProfileField.getVisibility());
+			}
+
+			if (userProfileField.getIndex() != null) {
+				oldUserProfileField.setIndex(userProfileField.getIndex());
+			}
+
+			return userProfileFieldManager.save(oldUserProfileField);
+		}
+
+	}
+
+	/**
+	 * 
+	 * @param name
+	 */
+	@PreAuthorize("isAuthenticated()")
+	@DeleteMapping("/{name}")
+	public void delete(@PathVariable("name") String name) {
+		if (userProfileFieldManager.get(getCurrentUserId(), name) == null) {
+			throw new EntityResponseStatusException(HttpStatus.NOT_MODIFIED);
+		}
+
+		userProfileFieldManager.delete(getCurrentUserId(), name);
+	}
+
+	/**
+	 * 
+	 */
+	protected void throttleForbidden() {
+		try {
+			Thread.sleep(RandomUtils.nextInt(10, 500));
+		} catch (InterruptedException e) {
+			throw new EntityResponseStatusException(HttpStatus.FORBIDDEN);
+		}
+		throw new EntityResponseStatusException(HttpStatus.FORBIDDEN);
+	}
+}

core/src/main/java/de/bstly/we/controller/VoucherController.java

@@ -0,0 +1,75 @@
+/**
+ * 
+ */
+package de.bstly.we.controller;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import de.bstly.we.businesslogic.PermissionManager;
+import de.bstly.we.businesslogic.PretixManager;
+import de.bstly.we.businesslogic.QuotaManager;
+import de.bstly.we.businesslogic.Quotas;
+import de.bstly.we.controller.support.EntityResponseStatusException;
+import de.bstly.we.model.Quota;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@RestController
+@RequestMapping("/vouchers")
+public class VoucherController extends BaseController {
+
+	@Autowired
+	private QuotaManager quotaManager;
+	@Autowired
+	private PretixManager pretixManager;
+	@Autowired
+	private PermissionManager permissionManager;
+
+	/**
+	 * 
+	 * @return
+	 */
+	@PreAuthorize("isAuthenticated()")
+	@PostMapping("/registration")
+	public String getRegistrationVoucher() {
+		Quota registrationVouchers = quotaManager.get(getCurrentUserId(),
+				Quotas.REGISTRATION_VOUCHERS);
+		if (registrationVouchers == null || registrationVouchers.getValue() < 1) {
+			throw new EntityResponseStatusException(HttpStatus.CONFLICT);
+		}
+
+		if (!permissionManager.isFullUser(getCurrentUserId())) {
+			throw new EntityResponseStatusException(HttpStatus.FORBIDDEN);
+		}
+		
+		String result = pretixManager.createRegistrationVoucher().get("code").getAsString();
+
+		registrationVouchers.setValue(registrationVouchers.getValue() - 1);
+		quotaManager.update(registrationVouchers);
+
+		return result;
+	}
+
+	/**
+	 * 
+	 * @return
+	 */
+	@PreAuthorize("isAuthenticated()")
+	@PostMapping("/addon")
+	public String getAddonVoucher() {
+		if (!permissionManager.isFullUser(getCurrentUserId())) {
+			throw new EntityResponseStatusException(HttpStatus.FORBIDDEN);
+		}
+
+		return pretixManager.createAddOnVoucher().get("code").getAsString();
+	}
+
+}

core/src/main/java/de/bstly/we/controller/debug/MigrationController.java

@@ -0,0 +1,64 @@
+/**
+ * 
+ */
+package de.bstly.we.controller.debug;
+
+import java.util.Map;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.domain.Sort;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.session.FindByIndexNameSessionRepository;
+import org.springframework.session.Session;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import de.bstly.we.controller.BaseController;
+import de.bstly.we.model.User;
+import de.bstly.we.repository.UserRepository;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+@RestController
+@RequestMapping("/migration")
+public class MigrationController extends BaseController {
+
+	@Autowired
+	private UserRepository userRepository;
+	@Autowired
+	private FindByIndexNameSessionRepository<? extends Session> sessionRepository;
+
+	/**
+	 * 
+	 */
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@DeleteMapping("/sessions")
+	public void deleteAllSessions() {
+		Pageable pageable = PageRequest.of(0, 100, Sort.by("id"));
+		Page<User> page;
+		do {
+			page = userRepository.findAll(pageable);
+			for (User user : page.getContent()) {
+				try {
+					Map<String, ? extends Session> usersSessions = sessionRepository
+							.findByPrincipalName(user.getUsername());
+					for (Session session : usersSessions.values()) {
+						sessionRepository.deleteById(session.getId());
+
+					}
+				} catch (Exception e) {
+					e.printStackTrace();
+				}
+
+			}
+			pageable = page.nextPageable();
+		} while (page.hasNext());
+	}
+
+}

core/src/main/java/de/bstly/we/controller/model/ItemModel.java

@@ -0,0 +1,45 @@
+/**
+ * 
+ */
+package de.bstly.we.controller.model;
+
+import java.util.Map;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+public class ItemModel {
+
+	private Map<String, String> name;
+	private String secret;
+
+	/**
+	 * @return the name
+	 */
+	public Map<String, String> getName() {
+		return name;
+	}
+
+	/**
+	 * @param name the name to set
+	 */
+	public void setName(Map<String, String> name) {
+		this.name = name;
+	}
+
+	/**
+	 * @return the secret
+	 */
+	public String getSecret() {
+		return secret;
+	}
+
+	/**
+	 * @param secret the secret to set
+	 */
+	public void setSecret(String secret) {
+		this.secret = secret;
+	}
+
+}

core/src/main/java/de/bstly/we/controller/model/ItemResultModel.java

@@ -0,0 +1,48 @@
+/**
+ * 
+ */
+package de.bstly.we.controller.model;
+
+import java.util.List;
+
+import de.bstly.we.model.PermissionMapping;
+import de.bstly.we.model.QuotaMapping;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+public class ItemResultModel {
+
+	private List<PermissionMapping> permissionMappings;
+	private List<QuotaMapping> quotaMappings;
+
+	/**
+	 * @return the permissionMappings
+	 */
+	public List<PermissionMapping> getPermissionMappings() {
+		return permissionMappings;
+	}
+
+	/**
+	 * @param permissionMappings the permissionMappings to set
+	 */
+	public void setPermissionMappings(List<PermissionMapping> permissionMappings) {
+		this.permissionMappings = permissionMappings;
+	}
+
+	/**
+	 * @return the quotaMappings
+	 */
+	public List<QuotaMapping> getQuotaMappings() {
+		return quotaMappings;
+	}
+
+	/**
+	 * @param quotaMappings the quotaMappings to set
+	 */
+	public void setQuotaMappings(List<QuotaMapping> quotaMappings) {
+		this.quotaMappings = quotaMappings;
+	}
+
+}

core/src/main/java/de/bstly/we/controller/model/LoginModel.java

@@ -0,0 +1,44 @@
+/**
+ * 
+ */
+package de.bstly.we.controller.model;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+public class LoginModel {
+
+	private String username;
+	private String password;
+
+	/**
+	 * @return the username
+	 */
+	public String getUsername() {
+		return username;
+	}
+
+	/**
+	 * @param username the username to set
+	 */
+	public void setUsername(String username) {
+		this.username = username;
+	}
+
+	/**
+	 * @return the password
+	 */
+	public String getPassword() {
+		return password;
+	}
+
+	/**
+	 * @param password the password to set
+	 */
+	public void setPassword(String password) {
+		this.password = password;
+	}
+
+}

core/src/main/java/de/bstly/we/controller/model/PagesResult.java

@@ -0,0 +1,90 @@
+/**
+ * 
+ */
+package de.bstly.we.controller.model;
+
+import java.util.List;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+public class PagesResult<T extends Object> {
+
+	private List<T> result;
+	private int size;
+	private int page;
+	private int totalElements;
+	private int totalPages;
+
+	/**
+	 * @return the result
+	 */
+	public List<T> getResult() {
+		return result;
+	}
+
+	/**
+	 * @param result the result to set
+	 */
+	public void setResult(List<T> result) {
+		this.result = result;
+	}
+
+	/**
+	 * @return the size
+	 */
+	public int getSize() {
+		return size;
+	}
+
+	/**
+	 * @param size the size to set
+	 */
+	public void setSize(int size) {
+		this.size = size;
+	}
+
+	/**
+	 * @return the page
+	 */
+	public int getPage() {
+		return page;
+	}
+
+	/**
+	 * @param page the page to set
+	 */
+	public void setPage(int page) {
+		this.page = page;
+	}
+
+	/**
+	 * @return the totalElements
+	 */
+	public int getTotalElements() {
+		return totalElements;
+	}
+
+	/**
+	 * @param totalElements the totalElements to set
+	 */
+	public void setTotalElements(int totalElements) {
+		this.totalElements = totalElements;
+	}
+
+	/**
+	 * @return the totalPages
+	 */
+	public int getTotalPages() {
+		return totalPages;
+	}
+
+	/**
+	 * @param totalPages the totalPages to set
+	 */
+	public void setTotalPages(int totalPages) {
+		this.totalPages = totalPages;
+	}
+
+}

core/src/main/java/de/bstly/we/controller/model/PasswordModel.java

@@ -0,0 +1,58 @@
+/**
+ * 
+ */
+package de.bstly.we.controller.model;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+public class PasswordModel {
+
+	private String old;
+	private String password;
+	private String password2;
+
+	/**
+	 * @return the old
+	 */
+	public String getOld() {
+		return old;
+	}
+
+	/**
+	 * @param old the old to set
+	 */
+	public void setOld(String old) {
+		this.old = old;
+	}
+
+	/**
+	 * @return the password
+	 */
+	public String getPassword() {
+		return password;
+	}
+
+	/**
+	 * @param password the password to set
+	 */
+	public void setPassword(String password) {
+		this.password = password;
+	}
+
+	/**
+	 * @return the password2
+	 */
+	public String getPassword2() {
+		return password2;
+	}
+
+	/**
+	 * @param password2 the password2 to set
+	 */
+	public void setPassword2(String password2) {
+		this.password2 = password2;
+	}
+}

core/src/main/java/de/bstly/we/controller/model/PasswordResetModel.java

@@ -0,0 +1,28 @@
+/**
+ * 
+ */
+package de.bstly.we.controller.model;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+public class PasswordResetModel extends PasswordModel {
+
+	private String token;
+
+	/**
+	 * @return the token
+	 */
+	public String getToken() {
+		return token;
+	}
+
+	/**
+	 * @param token the token to set
+	 */
+	public void setToken(String token) {
+		this.token = token;
+	}
+
+}

core/src/main/java/de/bstly/we/controller/model/PretixRequest.java

@@ -0,0 +1,78 @@
+/**
+ * 
+ */
+package de.bstly.we.controller.model;
+
+import java.util.Map;
+
+import org.springframework.http.HttpMethod;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+public class PretixRequest {
+
+	private String path;
+	private HttpMethod method;
+	private Map<String, String> queryParameters;
+	private Object payload;
+
+	/**
+	 * @return the path
+	 */
+	public String getPath() {
+		return path;
+	}
+
+	/**
+	 * @param path the path to set
+	 */
+	public void setPath(String path) {
+		this.path = path;
+	}
+
+	/**
+	 * @return the method
+	 */
+	public HttpMethod getMethod() {
+		return method;
+	}
+
+	/**
+	 * @param method the method to set
+	 */
+	public void setMethod(HttpMethod method) {
+		this.method = method;
+	}
+
+	/**
+	 * @return the queryParameters
+	 */
+	public Map<String, String> getQueryParameters() {
+		return queryParameters;
+	}
+
+	/**
+	 * @param queryParameters the queryParameters to set
+	 */
+	public void setQueryParameters(Map<String, String> queryParameters) {
+		this.queryParameters = queryParameters;
+	}
+
+	/**
+	 * @return the payload
+	 */
+	public Object getPayload() {
+		return payload;
+	}
+
+	/**
+	 * @param payload the payload to set
+	 */
+	public void setPayload(Object payload) {
+		this.payload = payload;
+	}
+
+}

core/src/main/java/de/bstly/we/controller/model/ProfileModel.java

@@ -0,0 +1,62 @@
+/**
+ * 
+ */
+package de.bstly.we.controller.model;
+
+import java.util.List;
+
+import de.bstly.we.model.UserProfileField;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+public class ProfileModel {
+
+	private String username;
+	private List<String> aliases;
+	private List<UserProfileField> profileFields;
+
+	/**
+	 * @return the username
+	 */
+	public String getUsername() {
+		return username;
+	}
+
+	/**
+	 * @param username the username to set
+	 */
+	public void setUsername(String username) {
+		this.username = username;
+	}
+
+	/**
+	 * @return the aliases
+	 */
+	public List<String> getAliases() {
+		return aliases;
+	}
+
+	/**
+	 * @param aliases the aliases to set
+	 */
+	public void setAliases(List<String> aliases) {
+		this.aliases = aliases;
+	}
+
+	/**
+	 * @return the profileFields
+	 */
+	public List<UserProfileField> getProfileFields() {
+		return profileFields;
+	}
+
+	/**
+	 * @param profileFields the profileFields to set
+	 */
+	public void setProfileFields(List<UserProfileField> profileFields) {
+		this.profileFields = profileFields;
+	}
+
+}

core/src/main/java/de/bstly/we/controller/model/SecondFactorProviderModel.java

@@ -0,0 +1,53 @@
+/**
+ * 
+ */
+package de.bstly.we.controller.model;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+public class SecondFactorProviderModel {
+
+	private String id;
+	private boolean request;
+
+	/**
+	 * @param provider
+	 * @param request
+	 */
+	public SecondFactorProviderModel(String id, boolean request) {
+		super();
+		this.id = id;
+		this.request = request;
+	}
+
+	/**
+	 * @return the id
+	 */
+	public String getId() {
+		return id;
+	}
+
+	/**
+	 * @param id the id to set
+	 */
+	public void setId(String id) {
+		this.id = id;
+	}
+
+	/**
+	 * @return the request
+	 */
+	public boolean isRequest() {
+		return request;
+	}
+
+	/**
+	 * @param request the request to set
+	 */
+	public void setRequest(boolean request) {
+		this.request = request;
+	}
+
+}

core/src/main/java/de/bstly/we/controller/model/UserModel.java

@@ -0,0 +1,143 @@
+/**
+ * 
+ */
+package de.bstly.we.controller.model;
+
+import java.util.List;
+
+import de.bstly.we.model.Permission;
+import de.bstly.we.model.PermissionMapping;
+import de.bstly.we.model.Quota;
+import de.bstly.we.model.QuotaMapping;
+import de.bstly.we.model.UserProfileField;
+import de.bstly.we.model.UserStatus;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+public class UserModel extends PasswordModel {
+
+	private String username;
+	private List<Permission> permissions;
+	private List<PermissionMapping> permissionMappings;
+	private List<Quota> quotas;
+	private List<QuotaMapping> quotaMappings;
+	private UserStatus status;
+	private String token;
+	private List<UserProfileField> profileFields;
+
+	/**
+	 * @return the username
+	 */
+	public String getUsername() {
+		return username;
+	}
+
+	/**
+	 * @param username the username to set
+	 */
+	public void setUsername(String username) {
+		this.username = username;
+	}
+
+	/**
+	 * @return the permissions
+	 */
+	public List<Permission> getPermissions() {
+		return permissions;
+	}
+
+	/**
+	 * @param permissions the permissions to set
+	 */
+	public void setPermissions(List<Permission> permissions) {
+		this.permissions = permissions;
+	}
+
+	/**
+	 * @return the permissionMappings
+	 */
+	public List<PermissionMapping> getPermissionMappings() {
+		return permissionMappings;
+	}
+
+	/**
+	 * @param permissionMappings the permissionMappings to set
+	 */
+	public void setPermissionMappings(List<PermissionMapping> permissionMappings) {
+		this.permissionMappings = permissionMappings;
+	}
+
+	/**
+	 * @return the quotas
+	 */
+	public List<Quota> getQuotas() {
+		return quotas;
+	}
+
+	/**
+	 * @param quotas the quotas to set
+	 */
+	public void setQuotas(List<Quota> quotas) {
+		this.quotas = quotas;
+	}
+
+	/**
+	 * @return the quotaMappings
+	 */
+	public List<QuotaMapping> getQuotaMappings() {
+		return quotaMappings;
+	}
+
+	/**
+	 * @param quotaMappings the quotaMappings to set
+	 */
+	public void setQuotaMappings(List<QuotaMapping> quotaMappings) {
+		this.quotaMappings = quotaMappings;
+	}
+
+	/**
+	 * @return the status
+	 */
+	public UserStatus getStatus() {
+		return status;
+	}
+
+	/**
+	 * @param status the status to set
+	 */
+	public void setStatus(UserStatus status) {
+		this.status = status;
+	}
+
+	/**
+	 * @return the token
+	 */
+	public String getToken() {
+		return token;
+	}
+
+	/**
+	 * @param token the token to set
+	 */
+	public void setToken(String token) {
+		this.token = token;
+	}
+
+	/**
+	 * @return the profileFields
+	 */
+	public List<UserProfileField> getProfileFields() {
+		return profileFields;
+	}
+
+	/**
+	 * @param profileFields the profileFields to set
+	 */
+	public void setProfileFields(List<UserProfileField> profileFields) {
+		this.profileFields = profileFields;
+	}
+
+}

core/src/main/java/de/bstly/we/controller/support/ControllerExceptionHandler.java

@@ -0,0 +1,47 @@
+/**
+ * 
+ */
+package de.bstly.we.controller.support;
+
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.context.request.WebRequest;
+import org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@ControllerAdvice
+public class ControllerExceptionHandler extends ResponseEntityExceptionHandler {
+
+	/**
+	 * 
+	 * @param exception
+	 * @param request
+	 * @return
+	 */
+	@ExceptionHandler(value = { EntityResponseStatusException.class })
+	protected ResponseEntity<Object> handleResponseEntityStatusException(RuntimeException exception,
+			WebRequest request) {
+		EntityResponseStatusException entityResponseStatusException = (EntityResponseStatusException) exception;
+		return handleExceptionInternal(exception, entityResponseStatusException.getBody(), new HttpHeaders(),
+				entityResponseStatusException.getStatus(), request);
+	}
+
+//	/**
+//	 * 
+//	 * @param exception
+//	 * @param request
+//	 * @return
+//	 */
+//	@ExceptionHandler(value = { IllegalArgumentException.class })
+//	protected ResponseEntity<Object> handleRIllegalArgumentException(RuntimeException exception, WebRequest request) {
+//		IllegalArgumentException illegalArgumentException = (IllegalArgumentException) exception;
+//		return handleExceptionInternal(exception, illegalArgumentException.getMessage(), new HttpHeaders(),
+//				HttpStatus.BAD_REQUEST, request);
+//	}
+}

core/src/main/java/de/bstly/we/controller/support/EntityResponseStatusException.java

@@ -0,0 +1,87 @@
+/**
+ * 
+ */
+package de.bstly.we.controller.support;
+
+import javax.annotation.Nullable;
+
+import org.springframework.core.NestedExceptionUtils;
+import org.springframework.core.NestedRuntimeException;
+import org.springframework.http.HttpStatus;
+import org.springframework.util.Assert;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+public class EntityResponseStatusException extends NestedRuntimeException {
+
+	/**
+	 * default serialVersionUID
+	 */
+	private static final long serialVersionUID = 1L;
+
+	private final HttpStatus status;
+
+	@Nullable
+	private final Object body;
+
+	/**
+	 * 
+	 * @param status
+	 */
+	public EntityResponseStatusException(HttpStatus status) {
+		this(null, status);
+	}
+
+	/**
+	 * 
+	 * @param body
+	 * @param status
+	 */
+	public EntityResponseStatusException(@Nullable Object body, HttpStatus status) {
+		this(body, status, null);
+	}
+
+	/**
+	 * 
+	 * @param body
+	 * @param status
+	 * @param cause
+	 */
+	public EntityResponseStatusException(@Nullable Object body, HttpStatus status, @Nullable Throwable cause) {
+		super(null, cause);
+		Assert.notNull(status, "HttpStatus is required");
+		this.status = status;
+		this.body = body;
+	}
+
+	/**
+	 * 
+	 * @return
+	 */
+	public HttpStatus getStatus() {
+		return this.status;
+	}
+
+	/**
+	 * 
+	 * @return
+	 */
+	@Nullable
+	public Object getBody() {
+		return this.body;
+	}
+
+	/**
+	 * 
+	 * @return
+	 */
+	@Override
+	public String getMessage() {
+		String msg = this.status + (this.body != null ? " \"" + this.body + "\"" : "");
+		return NestedExceptionUtils.buildMessage(msg, getCause());
+	}
+
+}

core/src/main/java/de/bstly/we/controller/support/JsonStringBodyControllerAdvice.java

@@ -0,0 +1,107 @@
+/**
+ * 
+ */
+package de.bstly.we.controller.support;
+
+import java.io.IOException;
+import java.lang.reflect.Type;
+
+import org.springframework.core.MethodParameter;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpInputMessage;
+import org.springframework.http.MediaType;
+import org.springframework.http.converter.HttpMessageConverter;
+import org.springframework.http.converter.StringHttpMessageConverter;
+import org.springframework.http.server.ServerHttpRequest;
+import org.springframework.http.server.ServerHttpResponse;
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.servlet.mvc.method.annotation.RequestBodyAdvice;
+import org.springframework.web.servlet.mvc.method.annotation.ResponseBodyAdvice;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonPrimitive;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+@ControllerAdvice
+public class JsonStringBodyControllerAdvice implements RequestBodyAdvice, ResponseBodyAdvice<String> {
+
+	private Gson gson = new Gson();
+
+	/*
+	 * @see org.springframework.web.servlet.mvc.method.annotation.RequestBodyAdvice#
+	 * supports(org.springframework.core.MethodParameter, java.lang.reflect.Type,
+	 * java.lang.Class)
+	 */
+	@Override
+	public boolean supports(MethodParameter methodParameter, Type targetType,
+			Class<? extends HttpMessageConverter<?>> converterType) {
+		return targetType instanceof Class && String.class.equals((Class<?>) targetType);
+	}
+
+	/*
+	 * @see org.springframework.web.servlet.mvc.method.annotation.RequestBodyAdvice#
+	 * beforeBodyRead(org.springframework.http.HttpInputMessage,
+	 * org.springframework.core.MethodParameter, java.lang.reflect.Type,
+	 * java.lang.Class)
+	 */
+	@Override
+	public HttpInputMessage beforeBodyRead(HttpInputMessage inputMessage, MethodParameter parameter, Type targetType,
+			Class<? extends HttpMessageConverter<?>> converterType) throws IOException {
+		return inputMessage;
+	}
+
+	/*
+	 * @see org.springframework.web.servlet.mvc.method.annotation.RequestBodyAdvice#
+	 * afterBodyRead(java.lang.Object, org.springframework.http.HttpInputMessage,
+	 * org.springframework.core.MethodParameter, java.lang.reflect.Type,
+	 * java.lang.Class)
+	 */
+	@Override
+	public Object afterBodyRead(Object body, HttpInputMessage inputMessage, MethodParameter parameter, Type targetType,
+			Class<? extends HttpMessageConverter<?>> converterType) {
+		body = ((String) body).replaceAll("^\"|\"$", "");
+		return body;
+	}
+
+	/*
+	 * @see org.springframework.web.servlet.mvc.method.annotation.RequestBodyAdvice#
+	 * handleEmptyBody(java.lang.Object, org.springframework.http.HttpInputMessage,
+	 * org.springframework.core.MethodParameter, java.lang.reflect.Type,
+	 * java.lang.Class)
+	 */
+	@Override
+	public Object handleEmptyBody(Object body, HttpInputMessage inputMessage, MethodParameter parameter,
+			Type targetType, Class<? extends HttpMessageConverter<?>> converterType) {
+		return body;
+	}
+
+	/*
+	 * @see
+	 * org.springframework.web.servlet.mvc.method.annotation.ResponseBodyAdvice#
+	 * supports(org.springframework.core.MethodParameter, java.lang.Class)
+	 */
+	@Override
+	public boolean supports(MethodParameter returnType, Class<? extends HttpMessageConverter<?>> converterType) {
+		return converterType == StringHttpMessageConverter.class;
+	}
+
+	/*
+	 * @see
+	 * org.springframework.web.servlet.mvc.method.annotation.ResponseBodyAdvice#
+	 * beforeBodyWrite(java.lang.Object, org.springframework.core.MethodParameter,
+	 * org.springframework.http.MediaType, java.lang.Class,
+	 * org.springframework.http.server.ServerHttpRequest,
+	 * org.springframework.http.server.ServerHttpResponse)
+	 */
+	@Override
+	public String beforeBodyWrite(String body, MethodParameter returnType, MediaType selectedContentType,
+			Class<? extends HttpMessageConverter<?>> selectedConverterType, ServerHttpRequest request,
+			ServerHttpResponse response) {
+		response.getHeaders().set(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE);
+		return gson.toJson(new JsonPrimitive(body));
+	}
+
+}

core/src/main/java/de/bstly/we/controller/support/RequestBodyErrors.java

@@ -0,0 +1,49 @@
+/**
+ * 
+ */
+package de.bstly.we.controller.support;
+
+import org.springframework.lang.Nullable;
+import org.springframework.validation.AbstractBindingResult;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@SuppressWarnings("serial")
+public class RequestBodyErrors extends AbstractBindingResult {
+
+	@Nullable
+	private final Object target;
+
+	/**
+	 * 
+	 * @param target
+	 * @param objectName
+	 */
+	public RequestBodyErrors(@Nullable Object target) {
+		super("request-body");
+		this.target = target;
+	}
+
+	/*
+	 * @see org.springframework.validation.AbstractBindingResult#getTarget()
+	 */
+	@Override
+	public Object getTarget() {
+		return target;
+	}
+
+	/*
+	 * @see
+	 * org.springframework.validation.AbstractBindingResult#getActualFieldValue(java
+	 * .lang.String)
+	 */
+	@Override
+	protected Object getActualFieldValue(String field) {
+		// Not necessary
+		return null;
+	}
+
+}

core/src/main/java/de/bstly/we/controller/support/TokenSessionManager.java

@@ -0,0 +1,277 @@
+/**
+ * 
+ */
+package de.bstly.we.controller.support;
+
+import java.time.Instant;
+import java.util.List;
+import java.util.Set;
+
+import javax.servlet.http.HttpSession;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
+import org.springframework.security.core.Authentication;
+import org.springframework.stereotype.Component;
+import org.springframework.util.StringUtils;
+
+import com.google.common.collect.Lists;
+import com.google.common.collect.Sets;
+import com.google.gson.JsonObject;
+
+import de.bstly.we.businesslogic.PermissionManager;
+import de.bstly.we.businesslogic.PermissionMappingManager;
+import de.bstly.we.businesslogic.PretixManager;
+import de.bstly.we.businesslogic.QuotaManager;
+import de.bstly.we.businesslogic.QuotaMappingManager;
+import de.bstly.we.controller.model.ItemResultModel;
+import de.bstly.we.model.Permission;
+import de.bstly.we.model.PermissionMapping;
+import de.bstly.we.model.QuotaMapping;
+import de.bstly.we.security.model.LocalUserDetails;
+import de.bstly.we.security.token.LocalAnonymousAuthenticationToken;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@Component
+public class TokenSessionManager {
+
+	public static final String HTTP_SESSION_ATTRIBUTE_TOKENS = "tokens";
+
+	@Autowired
+	private PermissionMappingManager permissionMappingManager;
+	@Autowired
+	private PermissionManager permissionManager;
+	@Autowired
+	private QuotaMappingManager quotaMappingManager;
+	@Autowired
+	private QuotaManager quotaManager;
+	@Autowired
+	private PretixManager pretixManager;
+
+	/**
+	 * 
+	 * @param userId
+	 * @param token
+	 * @return
+	 */
+	public List<PermissionMapping> getPermissionMappingsForToken(Long userId, String token) {
+		List<PermissionMapping> permissionMappings = Lists.newArrayList();
+
+		try {
+			JsonObject result = pretixManager.getCheckInItemBySecret(token);
+			if (result != null && result.get("secret").getAsString().equals(token)
+					&& result.getAsJsonArray("checkins").size() < 1
+					&& "p".equals(result.get("order__status").getAsString())) {
+				int item = result.get("item").getAsInt();
+				permissionMappings.addAll(permissionMappingManager.getAllByItem(item));
+			}
+		} catch (Exception e) {
+			// ignore
+		}
+		return permissionMappings;
+	}
+
+	/**
+	 * 
+	 * @param userId
+	 * @param token
+	 * @return
+	 */
+	public List<Permission> getPermissionsForToken(Long userId, String token) {
+		List<Permission> permissions = Lists.newArrayList();
+
+		try {
+			JsonObject orderPosition = pretixManager.getCheckInItemBySecret(token);
+			if (orderPosition != null && orderPosition.get("secret").getAsString().equals(token)
+					&& orderPosition.getAsJsonArray("checkins").size() < 1
+					&& "p".equals(orderPosition.get("order__status").getAsString())) {
+				int item = orderPosition.get("item").getAsInt();
+
+				Instant lastPaymentDate = pretixManager
+						.getLastPaymentDateForOrder(orderPosition.get("order").getAsString());
+
+				if (lastPaymentDate == null) {
+					throw new Exception("This should not happen!");
+				}
+
+				permissions.addAll(permissionManager.getForItem(userId, item,
+						orderPosition.get("answers").getAsJsonArray(), lastPaymentDate));
+			}
+		} catch (Exception e) {
+			// ignore
+			e.printStackTrace();
+		}
+		return permissions;
+	}
+
+	/**
+	 * 
+	 * @param userId
+	 * @param token
+	 * @return
+	 */
+	public List<QuotaMapping> getQuotaMappingsForToken(Long userId, String token) {
+		List<QuotaMapping> quotaMappings = Lists.newArrayList();
+
+		try {
+			JsonObject result = pretixManager.getCheckInItemBySecret(token);
+			if (result != null && result.get("secret").getAsString().equals(token)
+					&& result.getAsJsonArray("checkins").size() < 1
+					&& "p".equals(result.get("order__status").getAsString())) {
+				int item = result.get("item").getAsInt();
+				quotaMappings.addAll(quotaMappingManager.getAllByItem(item));
+			}
+		} catch (Exception e) {
+			// ignore
+		}
+		return quotaMappings;
+	}
+
+	/**
+	 * 
+	 * @param userId
+	 * @param tokens
+	 * @return
+	 */
+	public ItemResultModel applyTokens(Long userId, Set<String> tokens) {
+		ItemResultModel itemResultModel = new ItemResultModel();
+		List<PermissionMapping> permissionMappings = Lists.newArrayList();
+		List<QuotaMapping> quotaMappings = Lists.newArrayList();
+		for (String token : tokens) {
+			try {
+				JsonObject result = pretixManager.redeem(token);
+				if ("ok".equals(result.get("status").getAsString())) {
+					JsonObject position = result.get("position").getAsJsonObject();
+					int item = position.get("item").getAsInt();
+
+					Instant lastPaymentDate = pretixManager
+							.getLastPaymentDateForOrder(position.get("order").getAsString());
+
+					if (lastPaymentDate == null) {
+						throw new Exception("This should not happen!");
+					}
+
+					permissionManager.applyItem(userId, item,
+							position.get("answers").getAsJsonArray(), lastPaymentDate);
+					permissionMappings.addAll(permissionMappingManager.getAllByItem(item));
+					quotaManager.applyItem(userId, item);
+					quotaMappings.addAll(quotaMappingManager.getAllByItem(item));
+				}
+			} catch (Exception e) {
+				// ignore
+			}
+		}
+
+		itemResultModel.setPermissionMappings(permissionMappings);
+		itemResultModel.setQuotaMappings(quotaMappings);
+
+		return itemResultModel;
+	}
+
+	/**
+	 * 
+	 * @param session
+	 * @return
+	 */
+	public Set<String> getTokenFromSession(HttpSession session) {
+
+		Set<String> tokens = Sets.newHashSet();
+
+		Object sessionAttribute = session.getAttribute(HTTP_SESSION_ATTRIBUTE_TOKENS);
+
+		if (sessionAttribute != null && sessionAttribute instanceof String) {
+			for (String token : ((String) sessionAttribute).split(",")) {
+				if (StringUtils.hasText(token)) {
+					tokens.add(token);
+				}
+			}
+		}
+
+		return tokens;
+	}
+
+	/**
+	 * 
+	 * @param secret
+	 * @return
+	 */
+	public void addTokenToSession(String secret, HttpSession session) {
+
+		String tokens = "";
+
+		Object sessionAttribute = session.getAttribute(HTTP_SESSION_ATTRIBUTE_TOKENS);
+
+		if (sessionAttribute != null && sessionAttribute instanceof String) {
+			tokens = (String) sessionAttribute;
+		}
+
+		if (StringUtils.hasLength(tokens)) {
+			tokens += "," + secret;
+		} else {
+			tokens = secret;
+		}
+
+		session.setAttribute(HTTP_SESSION_ATTRIBUTE_TOKENS, tokens);
+
+	}
+
+	/**
+	 * 
+	 * @param secret
+	 * @return
+	 */
+	public void removeTokenFromSession(String secret, HttpSession session) {
+		String tokens = "";
+
+		Object sessionAttribute = session.getAttribute(HTTP_SESSION_ATTRIBUTE_TOKENS);
+
+		if (sessionAttribute != null && sessionAttribute instanceof String) {
+			for (String token : ((String) sessionAttribute).split(",")) {
+				if (!token.equals(secret)) {
+					if (StringUtils.hasLength(tokens)) {
+						tokens += "," + secret;
+					} else {
+						tokens = secret;
+					}
+				}
+			}
+		}
+
+		session.setAttribute(HTTP_SESSION_ATTRIBUTE_TOKENS, tokens);
+	}
+
+	/**
+	 * 
+	 * @param secret
+	 * @return
+	 */
+	public void removeTokensFromSession(HttpSession session) {
+		session.setAttribute(HTTP_SESSION_ATTRIBUTE_TOKENS, null);
+	}
+
+	/**
+	 * 
+	 * @param auth
+	 * @param details
+	 * @return
+	 */
+	protected Authentication createNewAuth(Authentication auth, LocalUserDetails details) {
+		Authentication newAuth = null;
+		if (auth instanceof UsernamePasswordAuthenticationToken) {
+			newAuth = new UsernamePasswordAuthenticationToken(details, auth.getCredentials(),
+					details.getAuthorities());
+		} else {
+			newAuth = new LocalAnonymousAuthenticationToken(details);
+		}
+
+		if (!auth.isAuthenticated()) {
+			newAuth.setAuthenticated(false);
+		}
+		return newAuth;
+	}
+
+}

core/src/main/java/de/bstly/we/controller/validation/PasswordModelValidator.java

@@ -0,0 +1,101 @@
+/**
+ * 
+ */
+package de.bstly.we.controller.validation;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.passay.CharacterRule;
+import org.passay.EnglishCharacterData;
+import org.passay.LengthRule;
+import org.passay.PasswordData;
+import org.passay.PasswordValidator;
+import org.passay.Rule;
+import org.passay.RuleResult;
+import org.passay.RuleResultDetail;
+import org.passay.WhitespaceRule;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+import org.springframework.validation.Errors;
+import org.springframework.validation.Validator;
+
+import de.bstly.we.businesslogic.SystemPropertyManager;
+import de.bstly.we.controller.model.PasswordModel;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@Component
+public class PasswordModelValidator implements Validator {
+
+	@Autowired
+	private SystemPropertyManager systemPropertyManager;
+
+	public static final String SYSTEM_PROPERTY_PASSWORD_RULE_WHITESPACE = "password.rule.whitespace";
+	public static final String SYSTEM_PROPERTY_PASSWORD_RULE_LENGTH = "password.rule.length";
+	public static final String SYSTEM_PROPERTY_PASSWORD_RULE_UPPERCASE = "password.rule.uppercase";
+	public static final String SYSTEM_PROPERTY_PASSWORD_RULE_DIGIT = "password.rule.digit";
+	public static final String SYSTEM_PROPERTY_PASSWORD_RULE_SPECIAL = "password.rule.special";
+
+	/*
+	 * @see org.springframework.validation.Validator#supports(java.lang.Class)
+	 */
+	@Override
+	public boolean supports(Class<?> clazz) {
+		return clazz.isAssignableFrom(PasswordModel.class);
+	}
+
+	/*
+	 * 
+	 * @see org.springframework.validation.Validator#validate(java.lang.Object,
+	 * org.springframework.validation.Errors)
+	 */
+	@Override
+	public void validate(Object target, Errors errors) {
+		PasswordModel passwordModel = (PasswordModel) target;
+
+		List<Rule> rules = new ArrayList<Rule>();
+
+		if (systemPropertyManager.getBoolean(SYSTEM_PROPERTY_PASSWORD_RULE_WHITESPACE, true)) {
+			rules.add(new WhitespaceRule());
+		}
+
+		int length = systemPropertyManager.getInteger(SYSTEM_PROPERTY_PASSWORD_RULE_LENGTH, 8);
+		if (length > 0) {
+			rules.add(new LengthRule(length, 4096));
+		}
+
+		int uppercase = systemPropertyManager.getInteger(SYSTEM_PROPERTY_PASSWORD_RULE_UPPERCASE, 1);
+		if (uppercase > 0) {
+			rules.add(new CharacterRule(EnglishCharacterData.UpperCase, uppercase));
+		}
+
+		int digit = systemPropertyManager.getInteger(SYSTEM_PROPERTY_PASSWORD_RULE_DIGIT, 1);
+		if (digit > 0) {
+			rules.add(new CharacterRule(EnglishCharacterData.Digit, digit));
+		}
+
+		int special = systemPropertyManager.getInteger(SYSTEM_PROPERTY_PASSWORD_RULE_SPECIAL, 1);
+		if (special > 0) {
+			rules.add(new CharacterRule(EnglishCharacterData.Special, special));
+		}
+
+		PasswordValidator validator = new PasswordValidator(rules);
+		PasswordData password = new PasswordData(passwordModel.getPassword());
+		RuleResult result = validator.validate(password);
+
+		if (!result.isValid()) {
+			for (RuleResultDetail ruleResultDetail : result.getDetails()) {
+				errors.rejectValue("password", ruleResultDetail.getErrorCode());
+			}
+		}
+
+		if (!passwordModel.getPassword().equals(passwordModel.getPassword2())) {
+			errors.rejectValue("password2", "NOT_MATCH");
+		}
+	}
+
+}

core/src/main/java/de/bstly/we/controller/validation/PermissionMappingValidator.java

@@ -0,0 +1,53 @@
+/**
+ * 
+ */
+package de.bstly.we.controller.validation;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+import org.springframework.validation.Errors;
+import org.springframework.validation.Validator;
+
+import de.bstly.we.businesslogic.PermissionMappingManager;
+import de.bstly.we.model.PermissionMapping;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@Component
+public class PermissionMappingValidator implements Validator {
+
+	@Autowired
+	private PermissionMappingManager permissionMappingManager;
+
+	/*
+	 * @see org.springframework.validation.Validator#supports(java.lang.Class)
+	 */
+	@Override
+	public boolean supports(Class<?> clazz) {
+		return clazz.isAssignableFrom(PermissionMapping.class);
+	}
+
+	/*
+	 * 
+	 * @see org.springframework.validation.Validator#validate(java.lang.Object,
+	 * org.springframework.validation.Errors)
+	 */
+	@Override
+	public void validate(Object target, Errors errors) {
+		PermissionMapping permissionMapping = (PermissionMapping) target;
+
+		for (String name : permissionMapping.getNames())
+			if (permissionMappingManager.exists(permissionMapping.getItem(), name)) {
+				errors.rejectValue("item", "ALREADY_EXISTS");
+				errors.rejectValue("names." + name, "ALREADY_EXISTS");
+			}
+
+		if (permissionMapping.getLifetime() <= 0) {
+			errors.rejectValue("lifetime", "TOO_SHORT");
+		}
+	}
+
+}

core/src/main/java/de/bstly/we/controller/validation/QuotaMappingValidator.java

@@ -0,0 +1,54 @@
+/**
+ * 
+ */
+package de.bstly.we.controller.validation;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+import org.springframework.validation.Errors;
+import org.springframework.validation.Validator;
+
+import de.bstly.we.businesslogic.QuotaMappingManager;
+import de.bstly.we.model.QuotaMapping;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@Component
+public class QuotaMappingValidator implements Validator {
+
+	@Autowired
+	private QuotaMappingManager quotaMappingManager;
+
+	/*
+	 * @see org.springframework.validation.Validator#supports(java.lang.Class)
+	 */
+	@Override
+	public boolean supports(Class<?> clazz) {
+		return clazz.isAssignableFrom(QuotaMapping.class);
+	}
+
+	/*
+	 * 
+	 * @see org.springframework.validation.Validator#validate(java.lang.Object,
+	 * org.springframework.validation.Errors)
+	 */
+	@Override
+	public void validate(Object target, Errors errors) {
+		QuotaMapping quotaMapping = (QuotaMapping) target;
+
+		for (Integer item : quotaMapping.getItems()) {
+			if (quotaMappingManager.exists(item, quotaMapping.getName())) {
+				errors.rejectValue("item", "ALREADY_EXISTS");
+				errors.rejectValue("name", "ALREADY_EXISTS");
+			}
+		}
+
+		if (quotaMapping.getValue() <= 0) {
+			errors.rejectValue("value", "TOO_SHORT");
+		}
+	}
+
+}

core/src/main/java/de/bstly/we/controller/validation/UserAliasValidator.java

@@ -0,0 +1,59 @@
+/**
+ * 
+ */
+package de.bstly.we.controller.validation;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+import org.springframework.util.StringUtils;
+import org.springframework.validation.Errors;
+import org.springframework.validation.Validator;
+
+import de.bstly.we.model.UserAlias;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+@Component
+public class UserAliasValidator implements Validator {
+	
+	@Autowired
+	private UserModelValidator userModelValidator;
+
+	/*
+	 * @see org.springframework.validation.Validator#supports(java.lang.Class)
+	 */
+	@Override
+	public boolean supports(Class<?> clazz) {
+		return clazz.isAssignableFrom(UserAlias.class);
+	}
+
+	/*
+	 * @see org.springframework.validation.Validator#validate(java.lang.Object,
+	 * org.springframework.validation.Errors)
+	 */
+	@Override
+	public void validate(Object target, Errors errors) {
+		UserAlias userAlias = (UserAlias) target;
+
+		if (!StringUtils.hasText(userAlias.getAlias())) {
+			errors.rejectValue("alias", "REQUIRED");
+			return;
+		}
+
+		if (userAlias.getTarget() == null) {
+			errors.rejectValue("target", "REQUIRED");
+			return;
+		}
+
+		if (userAlias.getVisibility() == null) {
+			errors.rejectValue("visibility", "REQUIRED");
+			return;
+		}
+
+		userModelValidator.validateUsername(userAlias.getAlias(), "alias", errors);
+
+	}
+
+}

core/src/main/java/de/bstly/we/controller/validation/UserDomainValidator.java

@@ -0,0 +1,73 @@
+/**
+ * 
+ */
+package de.bstly.we.controller.validation;
+
+import org.apache.commons.validator.routines.DomainValidator;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+import org.springframework.util.StringUtils;
+import org.springframework.validation.Errors;
+import org.springframework.validation.Validator;
+
+import de.bstly.we.businesslogic.UserDomainManager;
+import de.bstly.we.model.UserDomain;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+@Component
+public class UserDomainValidator implements Validator {
+
+	private DomainValidator domainValidator = DomainValidator.getInstance();
+	@Autowired
+	private UserDomainManager userDomainManager;
+
+	/*
+	 * @see org.springframework.validation.Validator#supports(java.lang.Class)
+	 */
+	@Override
+	public boolean supports(Class<?> clazz) {
+		return clazz.isAssignableFrom(UserDomain.class);
+	}
+
+	/*
+	 * @see org.springframework.validation.Validator#validate(java.lang.Object,
+	 * org.springframework.validation.Errors)
+	 */
+	@Override
+	public void validate(Object target, Errors errors) {
+		UserDomain userDomain = (UserDomain) target;
+
+		if (!StringUtils.hasText(userDomain.getDomain())) {
+			errors.rejectValue("domain", "REQUIRED");
+			return;
+		}
+
+		if (!domainValidator.isValid(userDomain.getDomain())) {
+			errors.rejectValue("domain", "NOT_VALID");
+			return;
+		}
+
+		UserDomain existingDomain = userDomainManager.getByDomain(userDomain.getDomain());
+
+		if (existingDomain != null && (userDomain.getId() == null
+				|| !(existingDomain.getId().equals(userDomain.getId())))) {
+			errors.rejectValue("domain", "NOT_VALID");
+			return;
+		}
+
+		if (userDomain.getTarget() == null) {
+			errors.rejectValue("target", "REQUIRED");
+			return;
+		}
+
+		if (userDomain.getVisibility() == null) {
+			errors.rejectValue("visibility", "REQUIRED");
+			return;
+		}
+
+	}
+
+}

core/src/main/java/de/bstly/we/controller/validation/UserModelValidator.java

@@ -0,0 +1,91 @@
+/**
+ * 
+ */
+package de.bstly.we.controller.validation;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+import org.springframework.util.StringUtils;
+import org.springframework.validation.Errors;
+import org.springframework.validation.Validator;
+
+import de.bstly.we.businesslogic.SystemPropertyManager;
+import de.bstly.we.businesslogic.UserAliasManager;
+import de.bstly.we.businesslogic.UserManager;
+import de.bstly.we.controller.model.UserModel;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@Component
+public class UserModelValidator implements Validator {
+
+	public static final String RESERVED_USERNAMES = "usernames.reserved";
+
+	protected static final String localPart = "^[a-zA-Z0-9_!#$%&'*+/=?`{|}~^-]+(?:\\\\.[A-Z0-9_!#$%&'*+/=?`{|}~^-]+)*$";
+
+	@Autowired
+	private UserManager userManager;
+	@Autowired
+	private UserAliasManager userAliasManager;
+	@Autowired
+	private SystemPropertyManager systemPropertyManager;
+
+	/*
+	 * @see org.springframework.validation.Validator#supports(java.lang.Class)
+	 */
+	@Override
+	public boolean supports(Class<?> clazz) {
+		return clazz.isAssignableFrom(UserModel.class);
+	}
+
+	/*
+	 * 
+	 * @see org.springframework.validation.Validator#validate(java.lang.Object,
+	 * org.springframework.validation.Errors)
+	 */
+	@Override
+	public void validate(Object target, Errors errors) {
+		UserModel userModel = (UserModel) target;
+
+		if (!StringUtils.hasText(userModel.getUsername())) {
+			errors.rejectValue("username", "REQUIRED");
+			return;
+		}
+
+		validateUsername(userModel.getUsername(), "username", errors);
+	}
+
+	/**
+	 * 
+	 * @param username
+	 * @param field
+	 * @param errors
+	 */
+	public void validateUsername(String username, String field, Errors errors) {
+		for (String systemUsername : systemPropertyManager.get(RESERVED_USERNAMES, "").split(",")) {
+			if (StringUtils.hasText(systemUsername)
+					&& (username.toLowerCase().equals(systemUsername)
+							|| username.toLowerCase().matches(systemUsername))) {
+				errors.rejectValue(field, "NOT_VALID");
+				break;
+			}
+		}
+
+		if (userManager.getByUsername(username) != null) {
+			errors.rejectValue(field, "NOT_VALID");
+			return;
+		}
+
+		if (userAliasManager.getByAlias(username) != null) {
+			errors.rejectValue(field, "NOT_VALID");
+			return;
+		}
+
+		if (!username.matches(localPart)) {
+			errors.rejectValue(field, "NOT_VALID");
+		}
+	}
+}

core/src/main/java/de/bstly/we/controller/validation/UserProfileFieldValidator.java

@@ -0,0 +1,157 @@
+/**
+ * 
+ */
+package de.bstly.we.controller.validation;
+
+import java.time.Instant;
+import java.time.format.DateTimeParseException;
+import java.util.List;
+
+import org.apache.commons.validator.routines.DoubleValidator;
+import org.apache.commons.validator.routines.EmailValidator;
+import org.apache.commons.validator.routines.UrlValidator;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+import org.springframework.validation.Errors;
+import org.springframework.validation.Validator;
+
+import com.google.common.collect.Lists;
+import com.querydsl.core.BooleanBuilder;
+
+import de.bstly.we.businesslogic.SystemProfileFieldManager;
+import de.bstly.we.model.ProfileFieldType;
+import de.bstly.we.model.QUserProfileField;
+import de.bstly.we.model.SystemProfileField;
+import de.bstly.we.model.UserProfileField;
+import de.bstly.we.repository.UserProfileFieldRepository;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+@Component
+public class UserProfileFieldValidator implements Validator {
+
+	@Autowired
+	private SystemProfileFieldManager systemProfileFieldManager;
+	@Autowired
+	private UserProfileFieldRepository userProfileFieldRepository;
+	private QUserProfileField qUserProfileField = QUserProfileField.userProfileField;
+
+	private DoubleValidator doubleValidator = DoubleValidator.getInstance();
+	private EmailValidator emailValidator = EmailValidator.getInstance();
+	private UrlValidator urlValidator = new UrlValidator(UrlValidator.ALLOW_ALL_SCHEMES);
+	private List<String> validBoolean = Lists.newArrayList("true", "True", "TRUE", "1", "false",
+			"False", "FALSE", "0");
+
+	/*
+	 * @see org.springframework.validation.Validator#supports(java.lang.Class)
+	 */
+	@Override
+	public boolean supports(Class<?> clazz) {
+		return clazz.isAssignableFrom(UserProfileField.class);
+	}
+
+	/*
+	 * @see org.springframework.validation.Validator#validate(java.lang.Object,
+	 * org.springframework.validation.Errors)
+	 */
+	@Override
+	public void validate(Object target, Errors errors) {
+		UserProfileField userProfileField = (UserProfileField) target;
+
+		if (userProfileField.getName() == null || userProfileField.getName().length() < 3) {
+			errors.rejectValue("name", "TOO_SHORT");
+		} else if (userProfileField.getName().length() > 255) {
+			errors.rejectValue("name", "TOO_LONG");
+		}
+
+		SystemProfileField systemProfileField = systemProfileFieldManager
+				.get(userProfileField.getName());
+
+		if (systemProfileField != null) {
+			if (!systemProfileField.getType().equals(userProfileField.getType())) {
+				errors.rejectValue("type", "INVALID_TYPE", userProfileField.getName());
+				return;
+			}
+
+			if (systemProfileField.isUniqueValue()) {
+				BooleanBuilder builder = new BooleanBuilder();
+				builder.and(qUserProfileField.name.eq(userProfileField.getName()));
+
+				if (userProfileField.getTarget() != null) {
+					builder.and(qUserProfileField.target.ne(userProfileField.getTarget()));
+				}
+
+				if (ProfileFieldType.BLOB.equals(userProfileField.getType())) {
+					if (userProfileField.getBlob() == null) {
+						errors.rejectValue("blob", "NOT_SPECIFIED", userProfileField.getName());
+						return;
+					}
+					builder.and(qUserProfileField.blob.eq(userProfileField.getBlob()));
+				} else if (userProfileField.getValue() == null) {
+					errors.rejectValue("value", "NOT_SPECIFIED", userProfileField.getName());
+				} else {
+					builder.and(qUserProfileField.value.eq(userProfileField.getValue()));
+				}
+
+				if (userProfileFieldRepository.exists(builder.getValue())) {
+					errors.rejectValue("value", "NOT_VALID", userProfileField.getName());
+					return;
+				}
+			}
+		}
+
+		switch (userProfileField.getType()) {
+		case BOOL:
+			if (!validBoolean.contains(userProfileField.getValue())) {
+				errors.rejectValue("value", "INVALID_BOOLEAN", userProfileField.getName());
+			}
+			break;
+		case DATE:
+			try {
+				Instant.parse(userProfileField.getValue());
+			} catch (DateTimeParseException e) {
+				errors.rejectValue("value", "INVALID_DATE", userProfileField.getName());
+			}
+			break;
+		case DATETIME:
+			try {
+				Instant.parse(userProfileField.getValue());
+			} catch (DateTimeParseException e) {
+				errors.rejectValue("value", "INVALID_DATE", userProfileField.getName());
+			}
+			break;
+		case TIME:
+			try {
+				Instant.parse(userProfileField.getValue());
+			} catch (DateTimeParseException e) {
+				errors.rejectValue("value", "INVALID_DATE", userProfileField.getName());
+			}
+			break;
+		case EMAIL:
+			if (!emailValidator.isValid(userProfileField.getValue())) {
+				errors.rejectValue("value", "INVALID_EMAIL", userProfileField.getName());
+			}
+			break;
+		case NUMBER:
+			if (!doubleValidator.isValid(userProfileField.getValue())) {
+				errors.rejectValue("value", "INVALID_NUMBER", userProfileField.getName());
+			}
+			break;
+		case TEXT:
+			if (userProfileField.getValue() != null && userProfileField.getValue().length() > 255) {
+				errors.rejectValue("value", "TOO_LONG", userProfileField.getName());
+			}
+			break;
+		case URL:
+			if (!urlValidator.isValid(userProfileField.getValue())) {
+				errors.rejectValue("value", "INVALID_URL", userProfileField.getName());
+			}
+			break;
+		case BLOB:
+			break;
+		}
+	}
+
+}

core/src/main/java/de/bstly/we/event/AbstractModelEvent.java

@@ -0,0 +1,63 @@
+/**
+ * 
+ */
+package de.bstly.we.event;
+
+import org.springframework.context.ApplicationEvent;
+
+import de.bstly.we.model.AbstractModel;
+
+/**
+ * @author Lurkars
+ *
+ */
+public class AbstractModelEvent extends ApplicationEvent {
+
+	/**
+	 * default serialVersionUID
+	 */
+	private static final long serialVersionUID = 1L;
+
+	private AbstractModelEventType type;
+	private AbstractModel model;
+
+	/**
+	 * 
+	 * @param type
+	 * @param model
+	 */
+	public AbstractModelEvent(AbstractModelEventType type, AbstractModel model) {
+		super(model);
+		this.type = type;
+		this.model = model;
+	}
+
+	/**
+	 * @return the type
+	 */
+	public AbstractModelEventType getType() {
+		return type;
+	}
+
+	/**
+	 * @param type the type to set
+	 */
+	public void setType(AbstractModelEventType type) {
+		this.type = type;
+	}
+
+	/**
+	 * @return the model
+	 */
+	public AbstractModel getModel() {
+		return model;
+	}
+
+	/**
+	 * @param model the model to set
+	 */
+	public void setModel(AbstractModel model) {
+		this.model = model;
+	}
+
+}

core/src/main/java/de/bstly/we/event/AbstractModelEventType.java

@@ -0,0 +1,14 @@
+/**
+ * 
+ */
+package de.bstly.we.event;
+
+/**
+ * @author Lurkars
+ *
+ */
+public enum AbstractModelEventType {
+
+	PRE_PERSIST, PRE_UPDATE, PRE_REMOVE, POST_PERSIST, POST_UPDATE, POST_REMOVE, POST_LOAD
+
+}

core/src/main/java/de/bstly/we/model/AbstractModel.java

@@ -0,0 +1,12 @@
+/**
+ * 
+ */
+package de.bstly.we.model;
+
+/**
+ * @author Lurkars
+ *
+ */
+public interface AbstractModel {
+
+}

core/src/main/java/de/bstly/we/model/Permission.java

@@ -0,0 +1,123 @@
+/**
+ * 
+ */
+package de.bstly.we.model;
+
+import java.time.Instant;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.Table;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@Entity
+@Table(name = "permissions")
+public class Permission implements UserData {
+
+	@Id
+	@GeneratedValue(strategy = GenerationType.IDENTITY)
+	@Column(name = "id")
+	private Long id;
+	@Column(name = "name", nullable = false)
+	private String name;
+	@Column(name = "target", nullable = false)
+	private Long target;
+	@Column(name = "addon", columnDefinition = "boolean default false")
+	private boolean addon;
+	@Column(name = "starts", nullable = true)
+	private Instant starts;
+	@Column(name = "expires")
+	private Instant expires;
+
+	/**
+	 * @return the id
+	 */
+	public Long getId() {
+		return id;
+	}
+
+	/**
+	 * @param id the id to set
+	 */
+	public void setId(Long id) {
+		this.id = id;
+	}
+
+	/**
+	 * @return the name
+	 */
+	public String getName() {
+		return name;
+	}
+
+	/**
+	 * @param name the name to set
+	 */
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	/**
+	 * @return the target
+	 */
+	public Long getTarget() {
+		return target;
+	}
+
+	/**
+	 * @param target the target to set
+	 */
+	public void setTarget(Long target) {
+		this.target = target;
+	}
+
+	/**
+	 * @return the addon
+	 */
+	public boolean isAddon() {
+		return addon;
+	}
+
+	/**
+	 * @param addon the addon to set
+	 */
+	public void setAddon(boolean addon) {
+		this.addon = addon;
+	}
+
+	/**
+	 * @return the starts
+	 */
+	public Instant getStarts() {
+		return starts;
+	}
+
+	/**
+	 * @param starts the starts to set
+	 */
+	public void setStarts(Instant starts) {
+		this.starts = starts;
+	}
+
+	/**
+	 * @return the expires
+	 */
+	public Instant getExpires() {
+		return expires;
+	}
+
+	/**
+	 * @param expires the expires to set
+	 */
+	public void setExpires(Instant expires) {
+		this.expires = expires;
+	}
+
+}

core/src/main/java/de/bstly/we/model/PermissionMapping.java

@@ -0,0 +1,214 @@
+/**
+ * 
+ */
+package de.bstly.we.model;
+
+import java.time.temporal.ChronoUnit;
+import java.util.Set;
+
+import javax.persistence.AttributeConverter;
+import javax.persistence.CollectionTable;
+import javax.persistence.Column;
+import javax.persistence.Convert;
+import javax.persistence.Converter;
+import javax.persistence.ElementCollection;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.Table;
+
+import org.hibernate.annotations.LazyCollection;
+import org.hibernate.annotations.LazyCollectionOption;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@Entity
+@Table(name = "permission_mappings")
+public class PermissionMapping {
+
+	public static final ChronoUnit DEFAULT_LIFETIME_UNIT = ChronoUnit.DAYS;
+
+	@Id
+	@GeneratedValue(strategy = GenerationType.IDENTITY)
+	@Column(name = "id")
+	private Long id;
+	@Column(name = "product")
+	private String product;
+	@Column(name = "item", nullable = false)
+	private Integer item;
+	@ElementCollection
+	@LazyCollection(LazyCollectionOption.FALSE)
+	@CollectionTable(name = "permission_mappings_names")
+	private Set<String> names;
+	@Column(name = "addon", columnDefinition = "boolean default false")
+	private boolean addon;
+	@Column(name = "lifetime")
+	private Long lifetime;
+	@Column(name = "lifetime_unit")
+	@Convert(converter = ChronoUnitConverter.class)
+	private ChronoUnit lifetimeUnit = DEFAULT_LIFETIME_UNIT;
+	@Column(name = "lifetime_round", columnDefinition = "boolean default false")
+	private boolean lifetimeRound;
+	@Column(name = "starts_question")
+	private String startsQuestion;
+	@Column(name = "expires_question")
+	private String expiresQuestion;
+
+	/**
+	 * @return the id
+	 */
+	public Long getId() {
+		return id;
+	}
+
+	/**
+	 * @param id the id to set
+	 */
+	public void setId(Long id) {
+		this.id = id;
+	}
+
+	/**
+	 * @return the product
+	 */
+	public String getProduct() {
+		return product;
+	}
+
+	/**
+	 * @param product the product to set
+	 */
+	public void setProduct(String product) {
+		this.product = product;
+	}
+
+	/**
+	 * @return the item
+	 */
+	public Integer getItem() {
+		return item;
+	}
+
+	/**
+	 * @param item the item to set
+	 */
+	public void setItem(Integer item) {
+		this.item = item;
+	}
+
+	/**
+	 * @return the names
+	 */
+	public Set<String> getNames() {
+		return names;
+	}
+
+	/**
+	 * @param names the names to set
+	 */
+	public void setNames(Set<String> names) {
+		this.names = names;
+	}
+
+	/**
+	 * @return the addon
+	 */
+	public boolean isAddon() {
+		return addon;
+	}
+
+	/**
+	 * @param addon the addon to set
+	 */
+	public void setAddon(boolean addon) {
+		this.addon = addon;
+	}
+
+	/**
+	 * @return the lifetime
+	 */
+	public Long getLifetime() {
+		return lifetime;
+	}
+
+	/**
+	 * @param lifetime the lifetime to set
+	 */
+	public void setLifetime(Long lifetime) {
+		this.lifetime = lifetime;
+	}
+
+	/**
+	 * @return the lifetimeUnit
+	 */
+	public ChronoUnit getLifetimeUnit() {
+		return lifetimeUnit;
+	}
+
+	/**
+	 * @param lifetimeUnit the lifetimeUnit to set
+	 */
+	public void setLifetimeUnit(ChronoUnit lifetimeUnit) {
+		this.lifetimeUnit = lifetimeUnit;
+	}
+
+	/**
+	 * @return the lifetimeRound
+	 */
+	public boolean isLifetimeRound() {
+		return lifetimeRound;
+	}
+
+	/**
+	 * @param lifetimeRound the lifetimeRound to set
+	 */
+	public void setLifetimeRound(boolean lifetimeRound) {
+		this.lifetimeRound = lifetimeRound;
+	}
+
+	/**
+	 * @return the startsQuestion
+	 */
+	public String getStartsQuestion() {
+		return startsQuestion;
+	}
+
+	/**
+	 * @param startsQuestion the startsQuestion to set
+	 */
+	public void setStartsQuestion(String startsQuestion) {
+		this.startsQuestion = startsQuestion;
+	}
+
+	/**
+	 * @return the expiresQuestion
+	 */
+	public String getExpiresQuestion() {
+		return expiresQuestion;
+	}
+
+	/**
+	 * @param expiresQuestion the expiresQuestion to set
+	 */
+	public void setExpiresQuestion(String expiresQuestion) {
+		this.expiresQuestion = expiresQuestion;
+	}
+
+	@Converter
+	public static class ChronoUnitConverter implements AttributeConverter<ChronoUnit, String> {
+		@Override
+		public String convertToDatabaseColumn(ChronoUnit chronoUnit) {
+			return chronoUnit.name();
+		}
+
+		@Override
+		public ChronoUnit convertToEntityAttribute(String value) {
+			return ChronoUnit.valueOf(value);
+		}
+	}
+
+}

core/src/main/java/de/bstly/we/model/PersistentLogin.java

@@ -0,0 +1,88 @@
+/**
+ * 
+ */
+package de.bstly.we.model;
+
+import java.time.Instant;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.Table;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@Entity
+@Table(name = "persistent_logins")
+public class PersistentLogin {
+
+	@Column(name = "username", length = 64, nullable = false)
+	private String username;
+	@Id
+	@Column(name = "series", length = 64)
+	private String series;
+	@Column(name = "token", length = 64, nullable = false)
+	private String token;
+	@Column(name = "last_used", nullable = false)
+	private Instant last_used;
+
+	/**
+	 * @return the username
+	 */
+	public String getUsername() {
+		return username;
+	}
+
+	/**
+	 * @param username the username to set
+	 */
+	public void setUsername(String username) {
+		this.username = username;
+	}
+
+	/**
+	 * @return the series
+	 */
+	public String getSeries() {
+		return series;
+	}
+
+	/**
+	 * @param series the series to set
+	 */
+	public void setSeries(String series) {
+		this.series = series;
+	}
+
+	/**
+	 * @return the token
+	 */
+	public String getToken() {
+		return token;
+	}
+
+	/**
+	 * @param token the token to set
+	 */
+	public void setToken(String token) {
+		this.token = token;
+	}
+
+	/**
+	 * @return the last_used
+	 */
+	public Instant getLast_used() {
+		return last_used;
+	}
+
+	/**
+	 * @param last_used the last_used to set
+	 */
+	public void setLast_used(Instant last_used) {
+		this.last_used = last_used;
+	}
+
+}

core/src/main/java/de/bstly/we/model/ProfileFieldType.java

@@ -0,0 +1,14 @@
+/**
+ * 
+ */
+package de.bstly.we.model;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+public enum ProfileFieldType {
+
+	TEXT, NUMBER, DATE, URL, EMAIL, BOOL, BLOB, DATETIME, TIME
+
+}

core/src/main/java/de/bstly/we/model/Quota.java

@@ -0,0 +1,120 @@
+/**
+ * 
+ */
+package de.bstly.we.model;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.Table;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+@Entity
+@Table(name = "quotas")
+public class Quota implements UserData {
+
+	@Id
+	@GeneratedValue(strategy = GenerationType.IDENTITY)
+	@Column(name = "id", updatable = false)
+	private Long id;
+	@Column(name = "target", nullable = false)
+	private Long target;
+	@Column(name = "name", nullable = false)
+	private String name;
+	@Column(name = "value", nullable = false)
+	private long value;
+	@Column(name = "unit", nullable = true)
+	private String unit;
+	@Column(name = "disposable", columnDefinition = "boolean default false")
+	private boolean disposable;
+
+	/**
+	 * @return the id
+	 */
+	public Long getId() {
+		return id;
+	}
+
+	/**
+	 * @param id the id to set
+	 */
+	public void setId(Long id) {
+		this.id = id;
+	}
+
+	/**
+	 * @return the target
+	 */
+	public Long getTarget() {
+		return target;
+	}
+
+	/**
+	 * @param target the target to set
+	 */
+	public void setTarget(Long target) {
+		this.target = target;
+	}
+
+	/**
+	 * @return the name
+	 */
+	public String getName() {
+		return name;
+	}
+
+	/**
+	 * @param name the name to set
+	 */
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	/**
+	 * @return the value
+	 */
+	public long getValue() {
+		return value;
+	}
+
+	/**
+	 * @param value the value to set
+	 */
+	public void setValue(long value) {
+		this.value = value;
+	}
+
+	/**
+	 * @return the unit
+	 */
+	public String getUnit() {
+		return unit;
+	}
+
+	/**
+	 * @param unit the unit to set
+	 */
+	public void setUnit(String unit) {
+		this.unit = unit;
+	}
+
+	/**
+	 * @return the disposable
+	 */
+	public boolean isDisposable() {
+		return disposable;
+	}
+
+	/**
+	 * @param disposable the disposable to set
+	 */
+	public void setDisposable(boolean disposable) {
+		this.disposable = disposable;
+	}
+
+}

core/src/main/java/de/bstly/we/model/QuotaMapping.java

@@ -0,0 +1,164 @@
+/**
+ * 
+ */
+package de.bstly.we.model;
+
+import java.util.Set;
+
+import javax.persistence.CollectionTable;
+import javax.persistence.Column;
+import javax.persistence.ElementCollection;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.Table;
+
+import org.hibernate.annotations.LazyCollection;
+import org.hibernate.annotations.LazyCollectionOption;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@Entity
+@Table(name = "quota_mappings")
+public class QuotaMapping {
+
+	@Id
+	@GeneratedValue(strategy = GenerationType.IDENTITY)
+	@Column(name = "id", updatable = false)
+	private Long id;
+	@ElementCollection
+	@LazyCollection(LazyCollectionOption.FALSE)
+	@CollectionTable(name = "quota_mappings_products")
+	private Set<String> products;
+	@ElementCollection
+	@LazyCollection(LazyCollectionOption.FALSE)
+	@CollectionTable(name = "quota_mappings_items")
+	private Set<Integer> items;
+	@Column(name = "name", nullable = false)
+	private String name;
+	@Column(name = "value", nullable = false)
+	private long value;
+	@Column(name = "unit", nullable = true)
+	private String unit;
+	@Column(name = "append", columnDefinition = "boolean default false")
+	private boolean append;
+	@Column(name = "disposable", columnDefinition = "boolean default false")
+	private boolean disposable;
+
+	/**
+	 * @return the id
+	 */
+	public Long getId() {
+		return id;
+	}
+
+	/**
+	 * @param id the id to set
+	 */
+	public void setId(Long id) {
+		this.id = id;
+	}
+
+	/**
+	 * @return the products
+	 */
+	public Set<String> getProducts() {
+		return products;
+	}
+
+	/**
+	 * @param products the products to set
+	 */
+	public void setProducts(Set<String> products) {
+		this.products = products;
+	}
+
+	/**
+	 * @return the items
+	 */
+	public Set<Integer> getItems() {
+		return items;
+	}
+
+	/**
+	 * @param items the items to set
+	 */
+	public void setItems(Set<Integer> items) {
+		this.items = items;
+	}
+
+	/**
+	 * @return the name
+	 */
+	public String getName() {
+		return name;
+	}
+
+	/**
+	 * @param name the name to set
+	 */
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	/**
+	 * @return the value
+	 */
+	public long getValue() {
+		return value;
+	}
+
+	/**
+	 * @param value the value to set
+	 */
+	public void setValue(long value) {
+		this.value = value;
+	}
+
+	/**
+	 * @return the unit
+	 */
+	public String getUnit() {
+		return unit;
+	}
+
+	/**
+	 * @param unit the unit to set
+	 */
+	public void setUnit(String unit) {
+		this.unit = unit;
+	}
+
+	/**
+	 * @return the append
+	 */
+	public boolean isAppend() {
+		return append;
+	}
+
+	/**
+	 * @param append the append to set
+	 */
+	public void setAppend(boolean append) {
+		this.append = append;
+	}
+
+	/**
+	 * @return the disposable
+	 */
+	public boolean isDisposable() {
+		return disposable;
+	}
+
+	/**
+	 * @param disposable the disposable to set
+	 */
+	public void setDisposable(boolean disposable) {
+		this.disposable = disposable;
+	}
+
+}

core/src/main/java/de/bstly/we/model/SecondFactor.java

@@ -0,0 +1,12 @@
+/**
+ * 
+ */
+package de.bstly.we.model;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+public interface SecondFactor extends UserData {
+
+}

core/src/main/java/de/bstly/we/model/SystemProfileField.java

@@ -0,0 +1,69 @@
+/**
+ * 
+ */
+package de.bstly.we.model;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.Table;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+@Entity
+@Table(name = "system_profile_fields")
+public class SystemProfileField {
+
+	@Id
+	@Column(name = "name", nullable = false)
+	private String name;
+	@Column(name = "type", nullable = false)
+	private ProfileFieldType type;
+	@Column(name = "unique_value", columnDefinition = "boolean default false")
+	private boolean uniqueValue;
+
+	/**
+	 * @return the name
+	 */
+	public String getName() {
+		return name;
+	}
+
+	/**
+	 * @param name the name to set
+	 */
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	/**
+	 * @return the type
+	 */
+	public ProfileFieldType getType() {
+		return type;
+	}
+
+	/**
+	 * @param type the type to set
+	 */
+	public void setType(ProfileFieldType type) {
+		this.type = type;
+	}
+
+	/**
+	 * @return the uniqueValue
+	 */
+	public boolean isUniqueValue() {
+		return uniqueValue;
+	}
+
+	/**
+	 * @param uniqueValue the uniqueValue to set
+	 */
+	public void setUniqueValue(boolean uniqueValue) {
+		this.uniqueValue = uniqueValue;
+	}
+
+}

core/src/main/java/de/bstly/we/model/SystemProperty.java

@@ -0,0 +1,73 @@
+/**
+ * 
+ */
+package de.bstly.we.model;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.Lob;
+import javax.persistence.Table;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@Entity
+@Table(name = "system_properties")
+public class SystemProperty {
+
+	@Id
+	@Column(name = "id")
+	private String key;
+	@Lob
+	@Column(name = "value")
+	private String value;
+
+	/**
+	 * 
+	 */
+	public SystemProperty() {
+		super();
+	}
+
+	/**
+	 * @param key
+	 * @param value
+	 */
+	public SystemProperty(String key, String value) {
+		super();
+		this.key = key;
+		this.value = value;
+	}
+
+	/**
+	 * @return the key
+	 */
+	public String getKey() {
+		return key;
+	}
+
+	/**
+	 * @param key the key to set
+	 */
+	public void setKey(String key) {
+		this.key = key;
+	}
+
+	/**
+	 * @return the value
+	 */
+	public String getValue() {
+		return value;
+	}
+
+	/**
+	 * @param value the value to set
+	 */
+	public void setValue(String value) {
+		this.value = value;
+	}
+
+}

core/src/main/java/de/bstly/we/model/User.java

@@ -0,0 +1,156 @@
+/**
+ * 
+ */
+package de.bstly.we.model;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.Table;
+import javax.persistence.UniqueConstraint;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@Entity
+@Table(name = "users", uniqueConstraints = @UniqueConstraint(columnNames = { "username" }))
+public class User implements UserData {
+
+	@Id
+	@Column(name = "id", updatable = false, unique = true, nullable = false)
+	@GeneratedValue(strategy = GenerationType.IDENTITY)
+	private Long id;
+	@Column(name = "username", unique = true, nullable = false)
+	private String username;
+	@JsonIgnore
+	@Column(name = "password", nullable = false)
+	private String passwordHash;
+	@Column(name = "disabled", columnDefinition = "boolean default false")
+	private boolean disabled;
+	@Column(name = "locked", columnDefinition = "boolean default false")
+	private boolean locked;
+	@Column(name = "status", nullable = false)
+	private UserStatus status;
+	@Column(name = "secret")
+	private String secret;
+	@Column(name = "reset_token")
+	private String resetToken;
+
+	/**
+	 * @return the id
+	 */
+	public Long getId() {
+		return id;
+	}
+
+	/**
+	 * @param id the id to set
+	 */
+	public void setId(Long id) {
+		this.id = id;
+	}
+
+	/**
+	 * @return the username
+	 */
+	public String getUsername() {
+		return username;
+	}
+
+	/**
+	 * @param username the username to set
+	 */
+	public void setUsername(String username) {
+		this.username = username;
+	}
+
+	/**
+	 * @return the passwordHash
+	 */
+	public String getPasswordHash() {
+		return passwordHash;
+	}
+
+	/**
+	 * @param passwordHash the passwordHash to set
+	 */
+	public void setPasswordHash(String passwordHash) {
+		this.passwordHash = passwordHash;
+	}
+
+	/**
+	 * @return the disabled
+	 */
+	public boolean isDisabled() {
+		return disabled;
+	}
+
+	/**
+	 * @param disabled the disabled to set
+	 */
+	public void setDisabled(boolean disabled) {
+		this.disabled = disabled;
+	}
+
+	/**
+	 * @return the locked
+	 */
+	public boolean isLocked() {
+		return locked;
+	}
+
+	/**
+	 * @param locked the locked to set
+	 */
+	public void setLocked(boolean locked) {
+		this.locked = locked;
+	}
+
+	/**
+	 * @return the status
+	 */
+	public UserStatus getStatus() {
+		return status;
+	}
+
+	/**
+	 * @param status the status to set
+	 */
+	public void setStatus(UserStatus status) {
+		this.status = status;
+	}
+
+	/**
+	 * @return the secret
+	 */
+	public String getSecret() {
+		return secret;
+	}
+
+	/**
+	 * @param secret the secret to set
+	 */
+	public void setSecret(String secret) {
+		this.secret = secret;
+	}
+
+	/**
+	 * @return the resetToken
+	 */
+	public String getResetToken() {
+		return resetToken;
+	}
+
+	/**
+	 * @param resetToken the resetToken to set
+	 */
+	public void setResetToken(String resetToken) {
+		this.resetToken = resetToken;
+	}
+}

core/src/main/java/de/bstly/we/model/UserAlias.java

@@ -0,0 +1,89 @@
+/**
+ * 
+ */
+package de.bstly.we.model;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.Table;
+import javax.persistence.UniqueConstraint;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+@Entity
+@Table(name = "aliases", uniqueConstraints = @UniqueConstraint(columnNames = { "alias" }))
+public class UserAlias implements UserData {
+
+	@Id
+	@Column(name = "id", updatable = false, unique = true, nullable = false)
+	@GeneratedValue(strategy = GenerationType.IDENTITY)
+	private Long id;
+	@Column(name = "target", nullable = false)
+	private Long target;
+	@Column(name = "alias", unique = true, nullable = false)
+	private String alias;
+	@Column(name = "visibility", nullable = false)
+	private Visibility visibility = Visibility.PROTECTED;
+
+	/**
+	 * @return the id
+	 */
+	public Long getId() {
+		return id;
+	}
+
+	/**
+	 * @param id the id to set
+	 */
+	public void setId(Long id) {
+		this.id = id;
+	}
+
+	/**
+	 * @return the target
+	 */
+	public Long getTarget() {
+		return target;
+	}
+
+	/**
+	 * @param target the target to set
+	 */
+	public void setTarget(Long target) {
+		this.target = target;
+	}
+
+	/**
+	 * @return the alias
+	 */
+	public String getAlias() {
+		return alias;
+	}
+
+	/**
+	 * @param alias the alias to set
+	 */
+	public void setAlias(String alias) {
+		this.alias = alias;
+	}
+
+	/**
+	 * @return the visibility
+	 */
+	public Visibility getVisibility() {
+		return visibility;
+	}
+
+	/**
+	 * @param visibility the visibility to set
+	 */
+	public void setVisibility(Visibility visibility) {
+		this.visibility = visibility;
+	}
+
+}

core/src/main/java/de/bstly/we/model/UserData.java

@@ -0,0 +1,12 @@
+/**
+ * 
+ */
+package de.bstly.we.model;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+public interface UserData {
+
+}

core/src/main/java/de/bstly/we/model/UserDomain.java

@@ -0,0 +1,120 @@
+/**
+ * 
+ */
+package de.bstly.we.model;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.Table;
+import javax.persistence.UniqueConstraint;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+@Entity
+@Table(name = "domains", uniqueConstraints = @UniqueConstraint(columnNames = { "domain" }))
+public class UserDomain implements UserData {
+
+	@Id
+	@Column(name = "id", updatable = false, unique = true, nullable = false)
+	@GeneratedValue(strategy = GenerationType.IDENTITY)
+	private Long id;
+	@Column(name = "target", nullable = false)
+	private Long target;
+	@Column(name = "domain", unique = true, nullable = false)
+	private String domain;
+	@Column(name = "visibility", nullable = false)
+	private Visibility visibility = Visibility.PROTECTED;
+	@Column(name = "secret")
+	private String secret;
+	@Column(name = "validated", columnDefinition = "boolean default false")
+	private boolean validated;
+
+	/**
+	 * @return the id
+	 */
+	public Long getId() {
+		return id;
+	}
+
+	/**
+	 * @param id the id to set
+	 */
+	public void setId(Long id) {
+		this.id = id;
+	}
+
+	/**
+	 * @return the target
+	 */
+	public Long getTarget() {
+		return target;
+	}
+
+	/**
+	 * @param target the target to set
+	 */
+	public void setTarget(Long target) {
+		this.target = target;
+	}
+
+	/**
+	 * @return the domain
+	 */
+	public String getDomain() {
+		return domain;
+	}
+
+	/**
+	 * @param domain the domain to set
+	 */
+	public void setDomain(String domain) {
+		this.domain = domain;
+	}
+
+	/**
+	 * @return the visibility
+	 */
+	public Visibility getVisibility() {
+		return visibility;
+	}
+
+	/**
+	 * @param visibility the visibility to set
+	 */
+	public void setVisibility(Visibility visibility) {
+		this.visibility = visibility;
+	}
+
+	/**
+	 * @return the secret
+	 */
+	public String getSecret() {
+		return secret;
+	}
+
+	/**
+	 * @param secret the secret to set
+	 */
+	public void setSecret(String secret) {
+		this.secret = secret;
+	}
+
+	/**
+	 * @return the validated
+	 */
+	public boolean isValidated() {
+		return validated;
+	}
+
+	/**
+	 * @param validated the validated to set
+	 */
+	public void setValidated(boolean validated) {
+		this.validated = validated;
+	}
+}

core/src/main/java/de/bstly/we/model/UserProfileField.java

@@ -0,0 +1,208 @@
+/**
+ * 
+ */
+package de.bstly.we.model;
+
+import java.io.Serializable;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.IdClass;
+import javax.persistence.Lob;
+import javax.persistence.Table;
+import javax.persistence.UniqueConstraint;
+
+import de.bstly.we.model.UserProfileField.UserProfileFieldId;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+@Entity
+@IdClass(UserProfileFieldId.class)
+@Table(name = "profile_fields", uniqueConstraints = @UniqueConstraint(columnNames = { "target",
+		"name" }))
+public class UserProfileField implements UserData {
+
+	@Id
+	@Column(name = "name", nullable = false)
+	private String name;
+	@Id
+	@Column(name = "target", nullable = false)
+	private Long target;
+	@Column(name = "value", nullable = true)
+	private String value;
+	@Lob
+	@Column(name = "blob_value", nullable = true)
+	private String blob;
+	@Column(name = "type", nullable = false)
+	private ProfileFieldType type;
+	@Column(name = "visibility", nullable = false)
+	private Visibility visibility;
+	@Column(name = "order_index", nullable = true)
+	private Integer index = 0;
+
+	/**
+	 * @return the name
+	 */
+	public String getName() {
+		return name;
+	}
+
+	/**
+	 * @param name the name to set
+	 */
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	/**
+	 * @return the target
+	 */
+	public Long getTarget() {
+		return target;
+	}
+
+	/**
+	 * @param target the target to set
+	 */
+	public void setTarget(Long target) {
+		this.target = target;
+	}
+
+	/**
+	 * @return the value
+	 */
+	public String getValue() {
+		return value;
+	}
+
+	/**
+	 * @param value the value to set
+	 */
+	public void setValue(String value) {
+		this.value = value;
+	}
+
+	/**
+	 * @return the blob
+	 */
+	public String getBlob() {
+		return blob;
+	}
+
+	/**
+	 * @param blob the blob to set
+	 */
+	public void setBlob(String blob) {
+		this.blob = blob;
+	}
+
+	/**
+	 * @return the type
+	 */
+	public ProfileFieldType getType() {
+		return type;
+	}
+
+	/**
+	 * @param type the type to set
+	 */
+	public void setType(ProfileFieldType type) {
+		this.type = type;
+	}
+
+	/**
+	 * @return the visibility
+	 */
+	public Visibility getVisibility() {
+		return visibility;
+	}
+
+	/**
+	 * @param visibility the visibility to set
+	 */
+	public void setVisibility(Visibility visibility) {
+		this.visibility = visibility;
+	}
+
+	/**
+	 * @return the index
+	 */
+	public Integer getIndex() {
+		return index;
+	}
+
+	/**
+	 * @param index the index to set
+	 */
+	public void setIndex(Integer index) {
+		this.index = index;
+	}
+
+	/**
+	 * 
+	 * @author _bastler@bstly.de
+	 *
+	 */
+	public static class UserProfileFieldId implements Serializable {
+
+		/**
+		 * default serialVersionUID
+		 */
+		private static final long serialVersionUID = 1L;
+		private Long target;
+		private String name;
+
+		/**
+		 * @return the target
+		 */
+		public Long getTarget() {
+			return target;
+		}
+
+		/**
+		 * @param target the target to set
+		 */
+		public void setTarget(Long target) {
+			this.target = target;
+		}
+
+		/**
+		 * @return the name
+		 */
+		public String getName() {
+			return name;
+		}
+
+		/**
+		 * @param name the name to set
+		 */
+		public void setName(String name) {
+			this.name = name;
+		}
+
+		/*
+		 * @see java.lang.Object#equals(java.lang.Object)
+		 */
+		@Override
+		public boolean equals(Object obj) {
+			if (obj instanceof UserProfileFieldId) {
+				UserProfileFieldId userProfileFieldId = (UserProfileFieldId) obj;
+				return this.name.equals(userProfileFieldId.getName())
+						&& this.target.equals(userProfileFieldId.getTarget());
+			}
+
+			return false;
+		}
+
+		/*
+		 * @see java.lang.Object#hashCode()
+		 */
+		@Override
+		public int hashCode() {
+			return this.name.hashCode() * this.target.hashCode();
+		}
+	}
+}

core/src/main/java/de/bstly/we/model/UserStatus.java

@@ -0,0 +1,14 @@
+/**
+ * 
+ */
+package de.bstly.we.model;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+public enum UserStatus {
+
+	NORMAL, SLEEP, PURGE
+
+}

core/src/main/java/de/bstly/we/model/UserTotp.java

@@ -0,0 +1,128 @@
+/**
+ * 
+ */
+package de.bstly.we.model;
+
+import java.util.List;
+
+import javax.persistence.CollectionTable;
+import javax.persistence.Column;
+import javax.persistence.ElementCollection;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.Table;
+import javax.persistence.UniqueConstraint;
+
+import org.hibernate.annotations.LazyCollection;
+import org.hibernate.annotations.LazyCollectionOption;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+@Entity
+@Table(name = "user_totps", uniqueConstraints = @UniqueConstraint(columnNames = { "target" }))
+public class UserTotp implements SecondFactor {
+
+	@Id
+	@GeneratedValue(strategy = GenerationType.IDENTITY)
+	@Column(name = "id")
+	private Long id;
+	private Long target;
+	private boolean enabled;
+	@Column(name = "totp_secret", nullable = false)
+	private String secret;
+	@Column(name = "totp_qr_data", nullable = false)
+	private String qrData;
+	@ElementCollection
+	@LazyCollection(LazyCollectionOption.FALSE)
+	@CollectionTable(name = "user_totps_recovery_codes")
+	private List<String> recoveryCodes;
+
+	/**
+	 * @return the id
+	 */
+	public Long getId() {
+		return id;
+	}
+
+	/**
+	 * @param id the id to set
+	 */
+	public void setId(Long id) {
+		this.id = id;
+	}
+
+	/**
+	 * @return the target
+	 */
+	public Long getTarget() {
+		return target;
+	}
+
+	/**
+	 * @param target the target to set
+	 */
+	public void setTarget(Long target) {
+		this.target = target;
+	}
+
+	/**
+	 * @return the enabled
+	 */
+	public boolean isEnabled() {
+		return enabled;
+	}
+
+	/**
+	 * @param enabled the enabled to set
+	 */
+	public void setEnabled(boolean enabled) {
+		this.enabled = enabled;
+	}
+
+	/**
+	 * @return the secret
+	 */
+	public String getSecret() {
+		return secret;
+	}
+
+	/**
+	 * @param secret the secret to set
+	 */
+	public void setSecret(String secret) {
+		this.secret = secret;
+	}
+
+	/**
+	 * @return the qrData
+	 */
+	public String getQrData() {
+		return qrData;
+	}
+
+	/**
+	 * @param qrData the qrData to set
+	 */
+	public void setQrData(String qrData) {
+		this.qrData = qrData;
+	}
+
+	/**
+	 * @return the recoveryCodes
+	 */
+	public List<String> getRecoveryCodes() {
+		return recoveryCodes;
+	}
+
+	/**
+	 * @param recoveryCodes the recoveryCodes to set
+	 */
+	public void setRecoveryCodes(List<String> recoveryCodes) {
+		this.recoveryCodes = recoveryCodes;
+	}
+
+}

core/src/main/java/de/bstly/we/model/Visibility.java

@@ -0,0 +1,14 @@
+/**
+ * 
+ */
+package de.bstly.we.model;
+
+/**
+ * @author _bastler@bstly.de
+ *
+ */
+public enum Visibility {
+
+	PRIVATE, PROTECTED, PUBLIC
+
+}

core/src/main/java/de/bstly/we/repository/PermissionMappingRepository.java

@@ -0,0 +1,21 @@
+/**
+ * 
+ */
+package de.bstly.we.repository;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.querydsl.QuerydslPredicateExecutor;
+import org.springframework.stereotype.Repository;
+
+import de.bstly.we.model.PermissionMapping;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@Repository
+public interface PermissionMappingRepository
+		extends JpaRepository<PermissionMapping, Long>, QuerydslPredicateExecutor<PermissionMapping> {
+
+}

core/src/main/java/de/bstly/we/repository/PermissionRepository.java

@@ -0,0 +1,21 @@
+/**
+ * 
+ */
+package de.bstly.we.repository;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.querydsl.QuerydslPredicateExecutor;
+import org.springframework.stereotype.Repository;
+
+import de.bstly.we.model.Permission;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@Repository
+public interface PermissionRepository
+		extends JpaRepository<Permission, Long>, QuerydslPredicateExecutor<Permission> {
+
+}

core/src/main/java/de/bstly/we/repository/QuotaMappingRepository.java

@@ -0,0 +1,21 @@
+/**
+ * 
+ */
+package de.bstly.we.repository;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.querydsl.QuerydslPredicateExecutor;
+import org.springframework.stereotype.Repository;
+
+import de.bstly.we.model.QuotaMapping;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@Repository
+public interface QuotaMappingRepository
+		extends JpaRepository<QuotaMapping, Long>, QuerydslPredicateExecutor<QuotaMapping> {
+
+}

core/src/main/java/de/bstly/we/repository/QuotaRepository.java

@@ -0,0 +1,20 @@
+/**
+ * 
+ */
+package de.bstly.we.repository;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.querydsl.QuerydslPredicateExecutor;
+import org.springframework.stereotype.Repository;
+
+import de.bstly.we.model.Quota;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@Repository
+public interface QuotaRepository extends JpaRepository<Quota, Long>, QuerydslPredicateExecutor<Quota> {
+
+}

core/src/main/java/de/bstly/we/repository/SystemProfileFieldRepository.java

@@ -0,0 +1,21 @@
+/**
+ * 
+ */
+package de.bstly.we.repository;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.querydsl.QuerydslPredicateExecutor;
+import org.springframework.stereotype.Repository;
+
+import de.bstly.we.model.SystemProfileField;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@Repository
+public interface SystemProfileFieldRepository extends JpaRepository<SystemProfileField, String>,
+		QuerydslPredicateExecutor<SystemProfileField> {
+
+}

core/src/main/java/de/bstly/we/repository/SystemPropertyRepository.java

@@ -0,0 +1,21 @@
+/**
+ * 
+ */
+package de.bstly.we.repository;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.querydsl.QuerydslPredicateExecutor;
+import org.springframework.stereotype.Repository;
+
+import de.bstly.we.model.SystemProperty;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@Repository
+public interface SystemPropertyRepository
+		extends JpaRepository<SystemProperty, String>, QuerydslPredicateExecutor<SystemProperty> {
+
+}

core/src/main/java/de/bstly/we/repository/UserAliasRepository.java

@@ -0,0 +1,21 @@
+/**
+ * 
+ */
+package de.bstly.we.repository;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.querydsl.QuerydslPredicateExecutor;
+import org.springframework.stereotype.Repository;
+
+import de.bstly.we.model.UserAlias;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@Repository
+public interface UserAliasRepository
+		extends JpaRepository<UserAlias, Long>, QuerydslPredicateExecutor<UserAlias> {
+
+}

core/src/main/java/de/bstly/we/repository/UserDomainRepository.java

@@ -0,0 +1,21 @@
+/**
+ * 
+ */
+package de.bstly.we.repository;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.querydsl.QuerydslPredicateExecutor;
+import org.springframework.stereotype.Repository;
+
+import de.bstly.we.model.UserDomain;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@Repository
+public interface UserDomainRepository
+		extends JpaRepository<UserDomain, Long>, QuerydslPredicateExecutor<UserDomain> {
+
+}

core/src/main/java/de/bstly/we/repository/UserProfileFieldRepository.java

@@ -0,0 +1,23 @@
+/**
+ * 
+ */
+package de.bstly.we.repository;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.querydsl.QuerydslPredicateExecutor;
+import org.springframework.stereotype.Repository;
+
+import de.bstly.we.model.UserProfileField;
+import de.bstly.we.model.UserProfileField.UserProfileFieldId;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@Repository
+public interface UserProfileFieldRepository
+		extends JpaRepository<UserProfileField, UserProfileFieldId>,
+		QuerydslPredicateExecutor<UserProfileField> {
+
+}

core/src/main/java/de/bstly/we/repository/UserRepository.java

@@ -0,0 +1,20 @@
+/**
+ * 
+ */
+package de.bstly.we.repository;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.querydsl.QuerydslPredicateExecutor;
+import org.springframework.stereotype.Repository;
+
+import de.bstly.we.model.User;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@Repository
+public interface UserRepository extends JpaRepository<User, Long>, QuerydslPredicateExecutor<User> {
+
+}

core/src/main/java/de/bstly/we/repository/UserTotpRepository.java

@@ -0,0 +1,20 @@
+/**
+ * 
+ */
+package de.bstly.we.repository;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.querydsl.QuerydslPredicateExecutor;
+import org.springframework.stereotype.Repository;
+
+import de.bstly.we.model.UserTotp;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+@Repository
+public interface UserTotpRepository extends JpaRepository<UserTotp, Long>, QuerydslPredicateExecutor<UserTotp> {
+
+}

core/src/main/java/de/bstly/we/security/LocalAuthenticationEntryPoint.java

@@ -0,0 +1,60 @@
+/**
+ * 
+ */
+package de.bstly.we.security;
+
+import java.io.IOException;
+import java.util.List;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.security.core.AuthenticationException;
+import org.springframework.security.web.authentication.LoginUrlAuthenticationEntryPoint;
+import org.springframework.security.web.util.matcher.RequestMatcher;
+
+import com.google.common.collect.Lists;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+public class LocalAuthenticationEntryPoint extends LoginUrlAuthenticationEntryPoint {
+
+	private List<RequestMatcher> requestMatchers = Lists.newArrayList();
+
+	/**
+	 * 
+	 * @param loginUrl
+	 */
+	public LocalAuthenticationEntryPoint(String loginFormUrl) {
+		super(loginFormUrl);
+	};
+
+	/*
+	 * @see
+	 * org.springframework.security.web.AuthenticationEntryPoint#commence(javax.
+	 * servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse,
+	 * org.springframework.security.core.AuthenticationException)
+	 */
+	@Override
+	public void commence(HttpServletRequest request, HttpServletResponse response,
+			AuthenticationException authException) throws IOException, ServletException {
+
+		for (RequestMatcher matcher : requestMatchers) {
+			if (matcher.matches(request)) {
+				super.commence(request, response, authException);
+				return;
+			}
+		}
+
+		response.setStatus(HttpStatus.FORBIDDEN.value());
+	}
+
+	public void addRequestMatcher(RequestMatcher requestMatcher) {
+		this.requestMatchers.add(requestMatcher);
+	}
+}

core/src/main/java/de/bstly/we/security/LocalAuthenticationProvider.java

@@ -0,0 +1,133 @@
+/**
+ * 
+ */
+package de.bstly.we.security;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.security.authentication.InsufficientAuthenticationException;
+import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
+import org.springframework.security.authentication.dao.DaoAuthenticationProvider;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.core.AuthenticationException;
+import org.springframework.security.core.authority.AuthorityUtils;
+import org.springframework.security.web.authentication.preauth.PreAuthenticatedAuthenticationToken;
+
+import de.bstly.we.security.businesslogic.SecondFactorProvider;
+import de.bstly.we.security.businesslogic.SecondFactorProviderManager;
+import de.bstly.we.security.model.LocalUserDetails;
+import de.bstly.we.security.token.LocalAnonymousAuthenticationToken;
+import de.bstly.we.security.token.LocalSecondFactorAuthenticationToken;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+public class LocalAuthenticationProvider extends DaoAuthenticationProvider {
+
+	@Autowired
+	private SecondFactorProviderManager secondFactorProviderManager;
+
+	/*
+	 * 
+	 * @see org.springframework.security.authentication.dao.
+	 * AbstractUserDetailsAuthenticationProvider#authenticate(org.springframework.
+	 * security.core.Authentication)
+	 */
+	@Override
+	public Authentication authenticate(Authentication auth) throws AuthenticationException {
+
+		if (auth instanceof UsernamePasswordAuthenticationToken) {
+			auth = super.authenticate(auth);
+			if (auth.getPrincipal() instanceof LocalUserDetails) {
+				LocalUserDetails details = (LocalUserDetails) auth.getPrincipal();
+				if (!secondFactorProviderManager.getEnabled(details.getUserId()).isEmpty()) {
+					PreAuthenticatedAuthenticationToken newAuth = new PreAuthenticatedAuthenticationToken(
+							details, "", AuthorityUtils.createAuthorityList("ROLE_PRE_AUTH_USER"));
+					newAuth.setAuthenticated(false);
+					return newAuth;
+				}
+
+				return new UsernamePasswordAuthenticationToken(details, auth.getCredentials(),
+						details.getAuthorities());
+			}
+
+		} else if (auth instanceof LocalSecondFactorAuthenticationToken) {
+			LocalSecondFactorAuthenticationToken secondFactorAuth = (LocalSecondFactorAuthenticationToken) auth;
+			if (auth.getPrincipal() instanceof LocalUserDetails) {
+				LocalUserDetails details = (LocalUserDetails) auth.getPrincipal();
+
+				SecondFactorProvider<?> provider = secondFactorProviderManager
+						.getProvider(secondFactorAuth.getProvider());
+
+				if (provider == null) {
+					throw new SecondFactorAuthenticationException(
+							"invalid provider: " + secondFactorAuth.getProvider(), details);
+				}
+
+				if (!provider.isEnabled(details.getUserId())) {
+					throw new SecondFactorAuthenticationException(
+							"provider is disabled: " + secondFactorAuth.getProvider(), details);
+				}
+
+				if (provider.validate(details.getUserId(), secondFactorAuth.getCode())) {
+					return new UsernamePasswordAuthenticationToken(details, auth.getCredentials(),
+							details.getAuthorities());
+				} else {
+					PreAuthenticatedAuthenticationToken newAuth = new PreAuthenticatedAuthenticationToken(
+							details, "", auth.getAuthorities());
+					newAuth.setAuthenticated(false);
+					return newAuth;
+				}
+			}
+		}
+
+		return auth;
+	}
+
+	public boolean supports(Class<?> authentication) {
+		return (UsernamePasswordAuthenticationToken.class.isAssignableFrom(authentication))
+				|| (LocalSecondFactorAuthenticationToken.class.isAssignableFrom(authentication))
+				|| (LocalAnonymousAuthenticationToken.class.isAssignableFrom(authentication));
+	}
+
+	/**
+	 * 
+	 * @author _bastler@bstly.de
+	 *
+	 */
+	public static class SecondFactorAuthenticationException
+			extends InsufficientAuthenticationException {
+
+		private LocalUserDetails principal;
+
+		/**
+		 * serialVersionUID
+		 */
+		private static final long serialVersionUID = 1L;
+
+		/**
+		 * @param msg
+		 */
+		public SecondFactorAuthenticationException(String message, LocalUserDetails principal) {
+			super(message);
+			this.principal = principal;
+		}
+
+		/**
+		 * @return the principal
+		 */
+		public LocalUserDetails getPrincipal() {
+			return principal;
+		}
+
+		/**
+		 * @param principal the principal to set
+		 */
+		public void setPrincipal(LocalUserDetails principal) {
+			this.principal = principal;
+		}
+
+	}
+
+}

core/src/main/java/de/bstly/we/security/LocalRememberMeServices.java

@@ -0,0 +1,49 @@
+/**
+ * 
+ */
+package de.bstly.we.security;
+
+import javax.servlet.http.HttpServletRequest;
+
+import org.springframework.security.core.userdetails.UserDetailsService;
+import org.springframework.security.web.authentication.rememberme.PersistentTokenBasedRememberMeServices;
+import org.springframework.security.web.authentication.rememberme.PersistentTokenRepository;
+
+/**
+ * 
+ * @author _bastler@bstly.de
+ *
+ */
+public class LocalRememberMeServices extends PersistentTokenBasedRememberMeServices {
+
+	/**
+	 * @param key
+	 * @param userDetailsService
+	 * @param tokenRepository
+	 */
+	public LocalRememberMeServices(String key, UserDetailsService userDetailsService,
+			PersistentTokenRepository tokenRepository) {
+		super(key, userDetailsService, tokenRepository);
+	}
+
+	/*
+	 * 
+	 * @see org.springframework.security.web.authentication.rememberme.
+	 * AbstractRememberMeServices#rememberMeRequested(javax.servlet.http.
+	 * HttpServletRequest, java.lang.String)
+	 */
+	@Override
+	protected boolean rememberMeRequested(HttpServletRequest request, String parameter) {
+		Object value = request.getAttribute(parameter);
+		if (value != null) {
+			String paramValue = value.toString();
+			if (paramValue.equalsIgnoreCase("true") || paramValue.equalsIgnoreCase("on")
+					|| paramValue.equalsIgnoreCase("yes") || paramValue.equals("1")) {
+				return true;
+			}
+		}
+
+		return super.rememberMeRequested(request, parameter);
+	}
+
+}