add /api/rbac/context + /api/hs/accounts/current endpoints (#189)

Co-authored-by: Michael Hoennig <michael@hoennig.de>
Reviewed-on: https://dev.hostsharing.net/hostsharing/hs.hsadmin.ng/pulls/189
Reviewed-by: Marc Sandlus <marc.sandlus@hostsharing.net>

.aliases

@@ -74,8 +74,11 @@ function importLegacyData() {
 alias gw-importHostingAssets='importLegacyData importHostingAssets'
 
 function gradlewBootRun() {
-    echo gw bootRun --args="--spring.profiles.active=dev,fakeCasAuthenticator,complete,test-data --server.port=${1:-8080}"
+    local port=${1:-8080}
-    ./gradlew bootRun --args="--spring.profiles.active=dev,fakeCasAuthenticator,complete,test-data --server.port=${1:-8080}"
+    shift
+    local additional_args="$@"
+    echo gw bootRun --args="--spring.profiles.active=dev,fakeCasAuthenticator,complete,test-data --server.port=${port} ${additional_args}"
+    ./gradlew bootRun --args="--spring.profiles.active=dev,fakeCasAuthenticator,complete,test-data --server.port=${port} ${additional_args}"
 }
 alias gw-bootRun=gradlewBootRun
 
@@ -155,4 +158,3 @@ source .environment
 
 alias scenario-reports-upload='./gradlew scenarioTest convertMarkdownToHtml && ssh hsh03-hsngdev@hsh03.hostsharing.net "rm -f doms/hsngdev.hs-example.de/htdocs-ssl/scenarios/office/*.html" && scp build/doc/scenarios/*.html hsh03-hsngdev@hsh03.hostsharing.net:doms/hsngdev.hs-example.de/htdocs-ssl/scenarios/office'
 alias scenario-reports-open='open https://hsngdev.hs-example.de/scenarios/office'
-

build.gradle.kts

@@ -669,3 +669,13 @@ tasks.register("compile") {
     description = "Compiles main and test Java sources."
     dependsOn("compileJava", "compileTestJava")
 }
+
+
+tasks.named<org.springframework.boot.gradle.tasks.run.BootRun>("bootRun") {
+    // Enable debug when the debug property is set
+    if (project.hasProperty("debug")) {
+        jvmArgs = listOf("-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=*:5005")
+    }
+    // Or always enable debug (remove the if condition)
+    // jvmArgs = listOf("-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=*:5005")
+}

src/main/java/net/hostsharing/hsadminng/context/Context.java

@@ -43,6 +43,11 @@ public class Context {
         define(currentSubject, null);
     }
 
+    @Transactional(propagation = MANDATORY)
+    public void define() {
+        define(SecurityContextHolder.getContext().getAuthentication().getName(), null);
+    }
+
     @Transactional(propagation = MANDATORY)
     public void define(final String currentSubject, final String assumedRoles) {
         define(toTask(request), toCurl(request), currentSubject, assumedRoles);
@@ -86,7 +91,7 @@ public class Context {
         return (UUID) em.createNativeQuery("select rbac.currentSubjectUuid()", UUID.class).getSingleResult();
     }
 
-    public String[] fetchAssumedRoles() {
+    public String[] fetchAssumedRolesNames() {
         return (String[]) em.createNativeQuery("select base.assumedRoles() as roles", String[].class).getSingleResult();
     }
 
@@ -94,6 +99,10 @@ public class Context {
         return (UUID[]) em.createNativeQuery("select rbac.currentSubjectOrAssumedRolesUuids() as uuids", UUID[].class).getSingleResult();
     }
 
+    public boolean isGlobalAdmin() {
+        return (boolean) em.createNativeQuery("select rbac.isGlobalAdmin()", boolean.class).getSingleResult();
+    }
+
     public static String getCallerMethodNameFromStackFrame(final int skipFrames) {
         final Optional<StackWalker.StackFrame> caller =
                 StackWalker.getInstance(StackWalker.Option.RETAIN_CLASS_REFERENCE)

src/main/java/net/hostsharing/hsadminng/errors/RestResponseEntityExceptionHandler.java

@@ -34,7 +34,7 @@ import static net.hostsharing.hsadminng.errors.CustomErrorResponse.*;
 
 @ControllerAdvice
 @RequiredArgsConstructor
-// HOWTO handle exceptions to produce specific http error codes and sensible error messages
+// HOWTO error handler mapping exceptions to specific http error codes and sensible error messages
 public class RestResponseEntityExceptionHandler
         extends ResponseEntityExceptionHandler {
 

src/main/java/net/hostsharing/hsadminng/hs/accounts/CredentialContextResourceToEntityMapper.java

@@ -2,6 +2,7 @@ package net.hostsharing.hsadminng.hs.accounts;
 
 import jakarta.persistence.EntityManager;
 import jakarta.persistence.EntityNotFoundException;
+
 import net.hostsharing.hsadminng.config.MessageTranslator;
 import net.hostsharing.hsadminng.accounts.generated.api.v1.model.ContextResource;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -54,8 +55,8 @@ public class CredentialContextResourceToEntityMapper {
                             messageTranslator.translate("{0} \"{1}\" not found or not accessible",
                                     "credentials uuid", resource.getUuid()));
                 }
-                if (!existingContextEntity.getType().equals(resource.getType()) &&
+                if ((resource.getType() != null && !existingContextEntity.getType().equals(resource.getType())) ||
-                    !existingContextEntity.getQualifier().equals(resource.getQualifier())) {
+                    (resource.getQualifier() != null && !existingContextEntity.getQualifier().equals(resource.getQualifier()))) {
                     throw new EntityNotFoundException(
                             messageTranslator.translate("existing {0} does not match given resource {1}",
                                     existingContextEntity, resource));

src/main/java/net/hostsharing/hsadminng/hs/accounts/HsCredentialsController.java

@@ -9,6 +9,8 @@ import java.util.function.BiConsumer;
 import io.micrometer.core.annotation.Timed;
 import io.swagger.v3.oas.annotations.security.SecurityRequirement;
 import net.hostsharing.hsadminng.accounts.generated.api.v1.model.ContextResource;
+import net.hostsharing.hsadminng.accounts.generated.api.v1.model.CurrentLoginUserResource;
+import net.hostsharing.hsadminng.accounts.generated.api.v1.model.RbacSubjectResource;
 import net.hostsharing.hsadminng.config.MessageTranslator;
 import net.hostsharing.hsadminng.context.Context;
 import net.hostsharing.hsadminng.accounts.generated.api.v1.api.CredentialsApi;
@@ -16,6 +18,7 @@ import net.hostsharing.hsadminng.accounts.generated.api.v1.model.CredentialsInse
 import net.hostsharing.hsadminng.accounts.generated.api.v1.model.CredentialsPatchResource;
 import net.hostsharing.hsadminng.accounts.generated.api.v1.model.CredentialsResource;
 import net.hostsharing.hsadminng.accounts.generated.api.v1.model.HsOfficePersonResource;
+import net.hostsharing.hsadminng.hs.office.person.HsOfficePerson;
 import net.hostsharing.hsadminng.hs.office.person.HsOfficePersonRbacRepository;
 import net.hostsharing.hsadminng.hs.office.person.HsOfficePersonType;
 import net.hostsharing.hsadminng.mapper.StrictMapper;
@@ -29,6 +32,7 @@ import org.springframework.web.bind.annotation.RestController;
 import org.springframework.web.servlet.mvc.method.annotation.MvcUriComponentsBuilder;
 
 import jakarta.persistence.EntityNotFoundException;
+import jakarta.validation.ValidationException;
 
 import static java.util.Optional.ofNullable;
 import static java.util.Optional.of;
@@ -61,13 +65,15 @@ public class HsCredentialsController implements CredentialsApi {
     @Autowired
     private HsCredentialsRepository credentialsRepo;
 
+    @Autowired
+    private RbacSubjectRepository rbacSubjectRepo;
+
     @Override
     @Transactional(readOnly = true)
     @Timed("app.credentials.credentials.getSingleCredentialsByUuid")
-    public ResponseEntity<CredentialsResource> getSingleCredentialsByUuid(
+    public ResponseEntity<CredentialsResource> getSingleCredentialsByUuid(final UUID credentialsUuid) {
-            final String assumedRoles,
+
-            final UUID credentialsUuid) {
+        context.define(); // without assumed roles, otherwise we cannot access the subject anymore
-        context.assumeRoles(assumedRoles);
 
         final var credentialsEntity = credentialsRepo.findByUuid(credentialsUuid);
         if (credentialsEntity.isEmpty()) {
@@ -99,10 +105,9 @@ public class HsCredentialsController implements CredentialsApi {
     @Transactional
     @Timed("app.credentials.credentials.postNewCredentials")
     public ResponseEntity<CredentialsResource> postNewCredentials(
-            final String assumedRoles,
             final CredentialsInsertResource body
     ) {
-        context.assumeRoles(assumedRoles);
+        context.define(); // without assumed roles, otherwise we cannot access the subject anymore
 
         // first create and save the subject to get its UUID
         final var newlySavedSubject = createSubject(body.getNickname());
@@ -110,6 +115,7 @@ public class HsCredentialsController implements CredentialsApi {
         // afterward, create and save the credentials entity with the subject's UUID
         final var newCredentialsEntity = mapper.map(
                 body, HsCredentialsEntity.class, RESOURCE_TO_ENTITY_POSTMAPPER);
+        validate(newCredentialsEntity);
         newCredentialsEntity.setSubject(newlySavedSubject);
         em.persist(newCredentialsEntity); // newCredentialsEntity.uuid == newlySavedSubject.uuid => do not use repository!
 
@@ -127,10 +133,13 @@ public class HsCredentialsController implements CredentialsApi {
     @Override
     @Transactional
     @Timed("app.credentials.credentials.deleteCredentialsByUuid")
-    public ResponseEntity<Void> deleteCredentialsByUuid(final String assumedRoles, final UUID credentialsUuid) {
+    public ResponseEntity<Void> deleteCredentialsByUuid(final UUID credentialsUuid) {
-        context.assumeRoles(assumedRoles);
+        context.define(); // without assumed roles, otherwise we cannot access the subject anymore
         final var credentialsEntity = em.getReference(HsCredentialsEntity.class, credentialsUuid);
+        credentialsEntity.getLoginContexts().clear();
+        em.flush();
         em.remove(credentialsEntity);
+        em.remove(credentialsEntity.getSubject());
         return ResponseEntity.noContent().build();
     }
 
@@ -138,11 +147,10 @@ public class HsCredentialsController implements CredentialsApi {
     @Transactional
     @Timed("app.credentials.credentials.patchCredentials")
     public ResponseEntity<CredentialsResource> patchCredentials(
-            final String assumedRoles,
             final UUID credentialsUuid,
             final CredentialsPatchResource body
     ) {
-        context.assumeRoles(assumedRoles);
+        context.define(); // without assumed roles, otherwise we cannot access the subject anymore
 
         final var current = credentialsRepo.findByUuid(credentialsUuid).orElseThrow();
 
@@ -154,6 +162,25 @@ public class HsCredentialsController implements CredentialsApi {
         return ResponseEntity.ok(mapped);
     }
 
+    @Override
+    @Transactional
+    @Timed("app.credentials.credentials.getCurrentLoginUser")
+    public ResponseEntity<CurrentLoginUserResource> getCurrentLoginUser() {
+
+        // define a context without assumed roles, otherwise we cannot access the subject anymore
+        context.define();
+
+        // fetch the data
+        final var currentSubjectUuid = context.fetchCurrentSubjectUuid();
+        final var currentSubject = rbacSubjectRepo.findByUuid(currentSubjectUuid);
+        final boolean isGlobalAdmin = context.isGlobalAdmin();
+        final var person = credentialsRepo.findByUuid(currentSubjectUuid).orElseThrow().getPerson();
+
+        // finally, return the result
+        final var result = currentLoginUserResponse(currentSubject, person, isGlobalAdmin);
+        return ResponseEntity.ok(result);
+    }
+
     @Override
     @Timed("app.credentials.credentials.credentialsUsed")
     public ResponseEntity<CredentialsResource> credentialsUsed(
@@ -171,12 +198,25 @@ public class HsCredentialsController implements CredentialsApi {
         return ResponseEntity.ok(mapped);
     }
 
+    private void validate(final HsCredentialsEntity newCredentialsEntity) {
+        // the referenced person must be represented by currently logged in person
+        final var personUuid = newCredentialsEntity.getPerson().getUuid();
+        final var representedPersonUuids = rbacPersonRepo.findPersonsrepresentedByPersonWithUuid(personUuid)
+                .stream().map(HsOfficePerson::getUuid).toList();
+        if ( !representedPersonUuids.contains(personUuid)) {
+            throw new ValidationException(
+                    messageTranslator.translate(
+                            "access-denied-personUuid-{0}-not-represented-by-currently-logged-in-person",
+                            personUuid));
+        }
+    }
+
     private RbacSubjectEntity createSubject(final String nickname) {
         final var newRbacSubject = subjectRepo.create(new RbacSubjectEntity(null, nickname));
         if(context.fetchCurrentSubject() == null) {
-            context.define("activate newly created self-servie subject", null, nickname, null);
+            context.define("activate newly created self-service subject", null, nickname, null);
         }
-        return subjectRepo.findByUuid(newRbacSubject.getUuid()); // attached to EM
+        return subjectRepo.findByUuid(newRbacSubject.getUuid()); // now attached to EM
     }
 
     private List<HsCredentialsEntity> findByPersonUuid(final UUID personUuid) {
@@ -189,6 +229,18 @@ public class HsCredentialsController implements CredentialsApi {
         return credentialsRepo.findByPerson(person);
     }
 
+
+    private CurrentLoginUserResource currentLoginUserResponse(
+            final RbacSubjectEntity currentSubject,
+            final HsOfficePerson<?> person,
+            final boolean isGlobalAdmin) {
+        final var result = new CurrentLoginUserResource();
+        result.setSubject(mapper.map(currentSubject, RbacSubjectResource.class));
+        result.setPerson(mapper.map(person, HsOfficePersonResource.class));
+        result.setGlobalAdmin(isGlobalAdmin);
+        return result;
+    }
+
     final BiConsumer<HsCredentialsEntity, CredentialsResource> ENTITY_TO_RESOURCE_POSTMAPPER = (entity, resource) -> {
         ofNullable(entity.getLastUsed()).ifPresent(
             dt -> resource.setLastUsed(dt.atOffset(ZoneOffset.UTC)));
@@ -213,8 +265,6 @@ public class HsCredentialsController implements CredentialsApi {
     }
 
     final BiConsumer<CredentialsInsertResource, HsCredentialsEntity> RESOURCE_TO_ENTITY_POSTMAPPER = (resource, entity) -> {
-
-        // TODO.impl: we need to make sure that the current subject is OWNER (or ADMIN?) of the person
         final var person = rbacPersonRepo.findByUuid(resource.getPersonUuid()).orElseThrow(
                 () -> new EntityNotFoundException(
                         messageTranslator.translate("{0} \"{1}\" not found or not accessible", "personUuid", resource.getPersonUuid())

src/main/java/net/hostsharing/hsadminng/hs/accounts/HsCredentialsEntity.java

@@ -40,7 +40,7 @@ public class HsCredentialsEntity implements BaseEntity<HsCredentialsEntity>, Str
     private UUID uuid;
 
     @MapsId
-    @OneToOne(optional = false, fetch = FetchType.LAZY)
+    @OneToOne(optional = false, fetch = FetchType.EAGER, cascade = CascadeType.ALL, orphanRemoval = true)
     @JoinColumn(name = "uuid", nullable = false, updatable = false, referencedColumnName = "uuid")
     private RbacSubjectEntity subject;
 
@@ -78,7 +78,7 @@ public class HsCredentialsEntity implements BaseEntity<HsCredentialsEntity>, Str
     @Column
     private String smsNumber;
 
-    @OneToMany(fetch = FetchType.LAZY, cascade = { MERGE, REFRESH }, orphanRemoval = true)
+    @OneToMany(fetch = FetchType.EAGER, cascade = { MERGE, REFRESH })
     @JoinTable(
             name = "context_mapping", schema = "hs_accounts",
             joinColumns = @JoinColumn(name = "credentials_uuid", referencedColumnName = "uuid"),

src/main/java/net/hostsharing/hsadminng/hs/accounts/HsCredentialsRepository.java

@@ -19,30 +19,22 @@ public interface HsCredentialsRepository extends Repository<HsCredentialsEntity,
 
     @Timed("app.login.credentials.repo.findByCurrentSubject")
     @Query(nativeQuery = true, value = """
-            WITH RECURSIVE owned_persons AS (
+             WITH RECURSIVE
-                -- Start with the person linked to current subject's credentials
+                same_person AS (
-                SELECT p.uuid AS person_uuid
+                    SELECT own_credentials.person_uuid
-                FROM hs_accounts.credentials c
+                    FROM hs_accounts.credentials own_credentials
-                JOIN hs_office.person p ON p.uuid = c.person_uuid
+                    WHERE own_credentials.uuid = rbac.currentSubjectUuid()
-                WHERE c.uuid = rbac.currentSubjectUuid()
+                ),
-                
+                represented_persons AS (
-                UNION
+                    SELECT relation.anchorUuid person_uuid
-                
+                    FROM hs_office.relation relation
-                -- Add persons where the current person has OWNER role
+                    WHERE relation.type = 'REPRESENTATIVE'
-                SELECT p.uuid AS person_uuid
+                      AND relation.holderUuid IN (SELECT person_uuid FROM same_person)
-                FROM owned_persons op
-                CROSS JOIN hs_office.person p
-                WHERE rbac.isGranted(
-                    rbac.currentSubjectUuid(),
-                    rbac.findRoleId(
-                        rbac.roleDescriptorOf('hs_office.person', p.uuid, 'OWNER'::rbac.RoleType, false)
-                    )
                 )
-            )
+            SELECT DISTINCT credentials.*
-            SELECT DISTINCT c.*
+            FROM hs_accounts.credentials credentials
-            FROM hs_accounts.credentials c
+            WHERE credentials.person_uuid IN (SELECT person_uuid FROM same_person)
-            WHERE c.uuid = rbac.currentSubjectUuid()  -- Include current subject's own credentials
+               OR credentials.person_uuid IN (SELECT person_uuid FROM represented_persons)
-               OR c.person_uuid IN (SELECT person_uuid FROM owned_persons)  -- Include credentials of owned persons
             """)
     List<HsCredentialsEntity> findByCurrentSubject();
 

src/main/java/net/hostsharing/hsadminng/hs/office/person/HsOfficePersonController.java

@@ -35,10 +35,13 @@ public class HsOfficePersonController implements HsOfficePersonsApi {
     @Timed("app.office.persons.api.getListOfPersons")
     public ResponseEntity<List<HsOfficePersonResource>> getListOfPersons(
             final String assumedRoles,
-            final String name) {
+            final String name,
+            final UUID representedByPersonUuid) {
         context.assumeRoles(assumedRoles);
 
-        final var entities = personRepo.findPersonByOptionalNameLike(name);
+        final var entities = representedByPersonUuid != null
+            ? personRepo.findPersonsrepresentedByPersonWithUuid(representedByPersonUuid)
+            : personRepo.findPersonByOptionalNameLike(name);
 
         final var resources = mapper.mapList(entities, HsOfficePersonResource.class);
         return ResponseEntity.ok(resources);

src/main/java/net/hostsharing/hsadminng/hs/office/person/HsOfficePersonRbacRepository.java

@@ -23,6 +23,22 @@ public interface HsOfficePersonRbacRepository extends Repository<HsOfficePersonR
     @Timed("app.office.persons.repo.findPersonByOptionalNameLike.rbac")
     List<HsOfficePersonRbacEntity> findPersonByOptionalNameLike(String name);
 
+    @Query(value = """
+            WITH RECURSIVE
+                represented_persons AS (
+                    SELECT relation.anchorUuid person_uuid
+                    FROM hs_office.relation relation
+                    WHERE relation.type = 'REPRESENTATIVE'
+                      AND relation.holderUuid = :personUuid
+                )
+            SELECT person.*
+                FROM hs_office.person person
+                WHERE person.uuid IN (SELECT person_uuid FROM represented_persons)
+                        OR person.uuid = :personUuid
+            """, nativeQuery = true)
+    @Timed("app.office.persons.repo.findRepresentedPersons.rbac")
+    List<HsOfficePersonRbacEntity> findPersonsrepresentedByPersonWithUuid(UUID personUuid);
+
     @Timed("app.office.persons.repo.save.rbac")
     HsOfficePersonRbacEntity save(final HsOfficePersonRbacEntity entity);
 

src/main/java/net/hostsharing/hsadminng/persistence/BaseEntity.java

@@ -1,22 +1,13 @@
 package net.hostsharing.hsadminng.persistence;
 
 
-import org.hibernate.Hibernate;
 
 import jakarta.persistence.EntityManager;
-import java.util.UUID;
 
-public interface BaseEntity<T extends BaseEntity<?>> {
+public interface BaseEntity<T extends BaseEntity<?>> extends ImmutableBaseEntity<T> {
-    UUID getUuid();
 
     int getVersion();
 
-    default T load() {
-        Hibernate.initialize(this);
-        //noinspection unchecked
-        return (T) this;
-    };
-
     default T reload(final EntityManager em) {
         em.flush();
         em.refresh(this);

src/main/java/net/hostsharing/hsadminng/persistence/ImmutableBaseEntity.java

@@ -0,0 +1,16 @@
+package net.hostsharing.hsadminng.persistence;
+
+
+import org.hibernate.Hibernate;
+
+import java.util.UUID;
+
+public interface ImmutableBaseEntity<T extends ImmutableBaseEntity<?>> {
+    UUID getUuid();
+
+    default T load() {
+        Hibernate.initialize(this);
+        //noinspection unchecked
+        return (T) this;
+    };
+}

src/main/java/net/hostsharing/hsadminng/rbac/context/RbacContextController.java

@@ -0,0 +1,77 @@
+package net.hostsharing.hsadminng.rbac.context;
+
+import io.micrometer.core.annotation.Timed;
+import io.swagger.v3.oas.annotations.security.SecurityRequirement;
+import net.hostsharing.hsadminng.context.Context;
+import net.hostsharing.hsadminng.mapper.StrictMapper;
+import net.hostsharing.hsadminng.rbac.generated.api.v1.api.RbacContextApi;
+import net.hostsharing.hsadminng.rbac.generated.api.v1.model.RbacContextResource;
+import net.hostsharing.hsadminng.rbac.generated.api.v1.model.RbacRoleResource;
+import net.hostsharing.hsadminng.rbac.generated.api.v1.model.RbacSubjectResource;
+import net.hostsharing.hsadminng.rbac.role.RbacRoleEntity;
+import net.hostsharing.hsadminng.rbac.role.RbacRoleRepository;
+import net.hostsharing.hsadminng.rbac.subject.RbacSubjectEntity;
+import net.hostsharing.hsadminng.rbac.subject.RbacSubjectRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.ResponseEntity;
+import org.springframework.transaction.annotation.Transactional;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+import java.util.UUID;
+
+@RestController
+@SecurityRequirement(name = "casTicket")
+public class RbacContextController implements RbacContextApi {
+
+    @Autowired
+    private Context context;
+
+    @Autowired
+    private StrictMapper mapper;
+
+    @Autowired
+    private RbacSubjectRepository rbacSubjectRepo;
+
+    @Autowired
+    private RbacRoleRepository roleRepo;
+
+    @Override
+    @Transactional(readOnly = true)
+    @Timed("app.rbac.current.api.getContext")
+    public ResponseEntity<RbacContextResource> getContext(final String roleNamesToAssume) {
+
+        // fetch subject data before assuming any roles; otherwise we might have no SELECT permission anymore
+        context.define();
+        final var currentSubjectUuid = context.fetchCurrentSubjectUuid();
+        final var currentSubject = rbacSubjectRepo.findByUuid(currentSubjectUuid);
+        if (currentSubject == null) {
+            return ResponseEntity.notFound().build();
+        }
+        final boolean isGlobalAdmin = context.isGlobalAdmin();
+
+        // now we can assume the roles
+        context.assumeRoles(roleNamesToAssume);
+        final var assumedRoles = roleRepo.fetchAssumedRoles();
+
+        // finally, return the result
+        final var result = rbacContextResponse(currentSubjectUuid, currentSubject, assumedRoles, isGlobalAdmin);
+        return ResponseEntity.ok(result);
+    }
+
+    private RbacContextResource rbacContextResponse(
+            final UUID currentSubjectUuid,
+            final RbacSubjectEntity currentSubject,
+            final List<RbacRoleEntity> assumedRoles,
+            final boolean isGlobalAdmin) {
+        final var result = new RbacContextResource();
+        final var currentSubjectResource = new RbacSubjectResource();
+        currentSubjectResource.setUuid(currentSubjectUuid);
+        currentSubjectResource.setName(currentSubject.getName());
+        result.setSubject(currentSubjectResource);
+        result.setGlobalAdmin(isGlobalAdmin);
+        final var assumedRolesResource = mapper.mapList(assumedRoles, RbacRoleResource.class);
+        result.setAssumedRoles(assumedRolesResource);
+        return result;
+    }
+}

src/main/java/net/hostsharing/hsadminng/rbac/role/RbacRoleRepository.java

@@ -1,6 +1,7 @@
 package net.hostsharing.hsadminng.rbac.role;
 
 import io.micrometer.core.annotation.Timed;
+import org.springframework.data.jpa.repository.Query;
 import org.springframework.data.repository.Repository;
 
 import java.util.List;
@@ -22,4 +23,12 @@ public interface RbacRoleRepository extends Repository<RbacRoleEntity, UUID> {
 
     @Timed("app.rbac.roles.repo.findByRoleName")
     RbacRoleEntity findByRoleName(String roleName);
+
+    @Timed("app.rbac.roles.repo.fetchAssumedRoles")
+    @Query(value = """
+        SELECT rev.*, rev.objectTable||'#'||rev.objectIdName||':'||rev.roleType AS roleName
+        FROM rbac.role_ev rev
+        WHERE rev.uuid = ANY(rbac.currentSubjectOrAssumedRolesUuids())
+        """, nativeQuery = true)
+    List<RbacRoleEntity> fetchAssumedRoles();
 }

src/main/java/net/hostsharing/hsadminng/rbac/subject/RbacSubjectEntity.java

@@ -1,6 +1,7 @@
 package net.hostsharing.hsadminng.rbac.subject;
 
 import lombok.*;
+import net.hostsharing.hsadminng.persistence.ImmutableBaseEntity;
 import org.springframework.data.annotation.Immutable;
 
 import jakarta.persistence.Entity;
@@ -21,7 +22,7 @@ import java.util.UUID;
 @Immutable
 @NoArgsConstructor
 @AllArgsConstructor
-public class RbacSubjectEntity {
+public class RbacSubjectEntity implements ImmutableBaseEntity<RbacSubjectEntity> {
 
     private static final int MAX_VALIDITY_DAYS = 21;
     private static DateTimeFormatter DATE_FORMAT_WITH_FULLHOUR = DateTimeFormatter.ofPattern("MM-dd-yyyy HH");

src/main/resources/api-definition/accounts/api-paths.yaml

@@ -8,6 +8,11 @@ servers:
 
 paths:
 
+  # current
+
+  /api/hs/accounts/current:
+    $ref: "current.yaml"
+
   # Contexts
 
   /api/hs/accounts/contexts:

src/main/resources/api-definition/accounts/context-schemas.yaml

@@ -21,7 +21,3 @@ components:
                     type: boolean
             required:
                 - uuid
-                - type
-                - qualifier
-                - onlyForNaturalPersons
-                - publicAccess

src/main/resources/api-definition/accounts/credentials-schemas.yaml

@@ -3,6 +3,16 @@ components:
 
     schemas:
 
+        CurrentLoginUser:
+            type: object
+            properties:
+                subject:
+                    $ref: '../rbac/rbac-subject-schemas.yaml#/components/schemas/RbacSubject'
+                person:
+                    $ref: '../hs-office/hs-office-person-schemas.yaml#/components/schemas/HsOfficePerson'
+                globalAdmin:
+                    type: boolean
+
         Credentials:
             type: object
             properties:
@@ -101,7 +111,8 @@ components:
                     items:
                         $ref: 'context-schemas.yaml#/components/schemas/Context'
             required:
-                - uuid
+                - person.uuid
+                - nickname
                 - active
             additionalProperties: false
 

src/main/resources/api-definition/accounts/credentials-with-uuid.yaml

@@ -4,7 +4,6 @@ get:
     description: 'Fetch a single  credentials its uuid, if visible for the current subject.'
     operationId: getSingleCredentialsByUuid
     parameters:
-        - $ref: 'auth.yaml#/components/parameters/assumedRoles'
         - name: credentialsUuid
           in: path
           required: true
@@ -31,7 +30,6 @@ patch:
     description: 'Updates a single  credentials identified by its uuid, if permitted for the current subject.'
     operationId: patchCredentials
     parameters:
-        -   $ref: 'auth.yaml#/components/parameters/assumedRoles'
         -   name: credentialsUuid
             in: path
             required: true
@@ -61,8 +59,7 @@ delete:
     description: 'Delete a single  credentials identified by its uuid, if permitted for the current subject.'
     operationId: deleteCredentialsByUuid
     parameters:
-        - $ref: 'auth.yaml#/components/parameters/assumedRoles'
+        - name: credentialsUuid
-        - name: CredentialsUuid
           in: path
           required: true
           schema:

src/main/resources/api-definition/accounts/credentials.yaml

@@ -32,8 +32,6 @@ post:
     tags:
         - credentials
     operationId: postNewCredentials
-    parameters:
-        - $ref: 'auth.yaml#/components/parameters/assumedRoles'
     requestBody:
         description: A JSON object describing the new  credential.
         required: true

src/main/resources/api-definition/accounts/current.yaml

@@ -0,0 +1,17 @@
+get:
+    summary: Currently logged in user data.
+    description: Returns information about the currently logged in user.
+    tags:
+        - credentials
+    operationId: getCurrentLoginUser
+    responses:
+        "200":
+            description: OK
+            content:
+                'application/json':
+                    schema:
+                        $ref: 'credentials-schemas.yaml#/components/schemas/CurrentLoginUser'
+        "401":
+            $ref: 'error-responses.yaml#/components/responses/Unauthorized'
+        "403":
+            $ref: 'error-responses.yaml#/components/responses/Forbidden'

src/main/resources/api-definition/accounts/error-responses.yaml

@@ -1,3 +1,4 @@
+
 components:
 
     responses:

src/main/resources/api-definition/hs-office/hs-office-persons.yaml

@@ -12,6 +12,30 @@ get:
           schema:
               type: string
           description: Prefix of caption to filter the results.
+        - name: representedByPersonUuid
+          in: query
+          required: false
+          schema:
+              type: string
+              format: uuid
+          description: if given, if only persons represented given person uuid should be returned
+    x-parameter-dependencies:
+        oneOf:
+            - properties:
+                  name:
+                      type: string
+                  not:
+                      required: [ representedByPersonUuid ]
+            - properties:
+                  representedByPersonUuid:
+                      type: string
+                      format: uuid
+                  not:
+                      required: [ name ]
+            - not:
+                  anyOf:
+                      - required: [ name ]
+                      - required: [ representedByPersonUuid ]
     responses:
         "200":
             description: OK

src/main/resources/api-definition/rbac/rbac-context-schemas.yaml

@@ -0,0 +1,16 @@
+
+components:
+
+  schemas:
+
+    RbacContext:
+      type: object
+      properties:
+        subject:
+          $ref: 'rbac-subject-schemas.yaml#/components/schemas/RbacSubject'
+        assumedRoles:
+          type: array
+          items:
+            $ref: 'rbac-role-schemas.yaml#/components/schemas/RbacRole'
+        globalAdmin:
+          type: boolean

src/main/resources/api-definition/rbac/rbac-context.yaml

@@ -0,0 +1,18 @@
+get:
+    tags:
+        - rbac-context
+    description: Information about the current subject.
+    operationId: getContext
+    parameters:
+        - $ref: 'auth.yaml#/components/parameters/assumedRoles'
+    responses:
+        '200':
+            description: OK
+            content:
+                'application/json':
+                    schema:
+                        $ref: 'rbac-context-schemas.yaml#/components/schemas/RbacContext'
+        '401':
+            $ref: 'error-responses.yaml#/components/responses/Unauthorized'
+        '403':
+            $ref: 'error-responses.yaml#/components/responses/Forbidden'

src/main/resources/api-definition/rbac/rbac.yaml

@@ -8,6 +8,9 @@ servers:
 
 paths:
 
+    /api/rbac/context:
+        $ref: 'rbac-context.yaml'
+
     /api/rbac/subjects:
         $ref: 'rbac-subjects.yaml'
 

src/main/resources/application.yml

@@ -72,6 +72,9 @@ metrics:
 logging:
     level:
         org.springframework.security: info
+        org.springframework.web: DEBUG
+        org.springframework.web.method.annotation: DEBUG
+        org.springframework.validation: DEBUG
 # HOWTO configure logging, e.g. logging to a separate file, see:
 #   https://docs.spring.io/spring-boot/reference/features/logging.html
 

src/main/resources/db/changelog/9-hs-global/950-accounts/9519-hs-accounts-test-data.sql

@@ -12,6 +12,9 @@ declare
     personAlexUuid uuid;
     superuserFranSubjectUuid uuid;
     personFranUuid uuid;
+    userDrewSubjectUuid uuid;
+    personDrewUuid uuid;
+
 
     context_HSADMIN_prod    hs_accounts.context;
     context_SSH_internal    hs_accounts.context;
@@ -26,6 +29,8 @@ begin
     personAlexUuid = (SELECT uuid FROM hs_office.person WHERE givenName='Alex');
     superuserFranSubjectUuid = (SELECT uuid FROM rbac.subject WHERE name='superuser-fran@hostsharing.net');
     personFranUuid = (SELECT uuid FROM hs_office.person WHERE givenName='Fran');
+    userDrewSubjectUuid = (SELECT uuid FROM rbac.subject WHERE name='selfregistered-user-drew@hostsharing.org');
+    personDrewUuid = (SELECT uuid FROM hs_office.person WHERE givenName='Drew');
 
     -- Add test contexts
     INSERT INTO hs_accounts.context (uuid, type, qualifier, only_for_natural_persons, public_access) VALUES
@@ -65,14 +70,17 @@ begin
     -- Add test credentials (linking to assumed rbac.subject UUIDs)
     INSERT INTO hs_accounts.credentials (uuid, version, person_uuid, active, global_uid, global_gid, onboarding_token, totp_secrets, phone_password, email_address, sms_number) VALUES
         ( superuserAlexSubjectUuid, 0, personAlexUuid, true, 1001, 1001, 'token-abc', ARRAY['otp-secret-1a', 'otp-secret-1b'], 'phone-pw-1', 'alex@example.com', '111-222-3333'),
-        ( superuserFranSubjectUuid, 0, personFranUuid, true, 1002, 1002, 'token-def', ARRAY['otp-secret-2'], 'phone-pw-2', 'fran@example.com', '444-555-6666');
+        ( superuserFranSubjectUuid, 0, personFranUuid, true, 1002, 1002, 'token-def', ARRAY['otp-secret-2'], 'phone-pw-2', 'fran@example.com', '444-555-6666'),
+        ( userDrewSubjectUuid, 0, personDrewUuid, true, 1003, 1003, 'token-def', ARRAY['otp-secret-3'], 'phone-pw-3', 'drew@example.org', '999-888-7777');
 
     -- Map credentials to contexts
     INSERT INTO hs_accounts.context_mapping (credentials_uuid, context_uuid) VALUES
         (superuserAlexSubjectUuid, context_HSADMIN_prod.uuid),
         (superuserFranSubjectUuid, context_HSADMIN_prod.uuid),
+        (userDrewSubjectUuid, context_HSADMIN_prod.uuid),
         (superuserAlexSubjectUuid, context_SSH_internal.uuid),
         (superuserFranSubjectUuid, context_SSH_internal.uuid),
+        (userDrewSubjectUuid, context_SSH_external.uuid),
         (superuserAlexSubjectUuid, context_MATRIX_internal.uuid),
         (superuserFranSubjectUuid, context_MATRIX_internal.uuid);
 

src/main/resources/i18n/messages_de.properties

@@ -14,6 +14,7 @@ but\ is=ist aber
 
 # credentials validations
 existing\ {0}\ does\ not\ match\ given\ resource\ {1}=existierender Credentials-Context {0} passt nicht zum angegebenen {1}
+access-denied-personUuid-{0}-not-represented-by-currently-logged-in-person=Zugriff verweigert: personUuid "{0}" wird von der eingeloggten Person nicht repräsentiert
 
 # office.coop-shares
 for\ transactionType\={0},\ shareCount\ must\ be\ positive\ but\ is\ {1}=für transactionType={0}, muss shareCount positiv sein, ist aber {1}

src/main/resources/i18n/messages_en.properties

@@ -5,4 +5,5 @@
 # But in that case, you can NOT use a prefix - or the prefix would be shown to the user as well.
 # I'm not sure, though, if using the english default translations as keys is really a good idea.
 
-
+# credentials validations
+access-denied-personUuid-{0}-not-represented-by-currently-logged-in-person=access denied: personUuid "{0}" not represented by currently logged in person

src/test/java/net/hostsharing/hsadminng/arch/ArchitectureTest.java

@@ -83,6 +83,7 @@ public class ArchitectureTest {
                     "..mapper",
                     "..ping",
                     "..rbac",
+                    "..rbac.context",
                     "..rbac.generator",
                     "..rbac.subject",
                     "..rbac.grant",
@@ -238,7 +239,8 @@ public class ArchitectureTest {
                     "..hs.office.debitor..",
                     "..hs.office.membership..",
                     "..hs.migration..",
-                    "..hs.hosting.asset.."
+                    "..hs.hosting.asset..",
+                    "..hs.accounts.."
                     );
 
     @ArchTest

src/test/java/net/hostsharing/hsadminng/hs/accounts/HsCredentialsControllerRestTest.java

@@ -3,6 +3,7 @@ package net.hostsharing.hsadminng.hs.accounts;
 import net.hostsharing.hsadminng.config.DisableSecurityConfig;
 import net.hostsharing.hsadminng.config.JsonObjectMapperConfiguration;
 import net.hostsharing.hsadminng.config.MessageTranslator;
+import net.hostsharing.hsadminng.config.MessagesResourceConfig;
 import net.hostsharing.hsadminng.context.Context;
 import net.hostsharing.hsadminng.hs.office.person.HsOfficePersonRbacEntity;
 import net.hostsharing.hsadminng.hs.office.person.HsOfficePersonRbacRepository;
@@ -26,20 +27,31 @@ import jakarta.persistence.EntityManagerFactory;
 import java.time.LocalDateTime;
 import java.time.ZonedDateTime;
 import java.time.format.DateTimeFormatter;
+import java.util.List;
 import java.util.Optional;
 import java.util.Set;
 import java.util.UUID;
+import java.util.concurrent.atomic.AtomicReference;
 
 import static net.hostsharing.hsadminng.hs.office.person.HsOfficePersonType.LEGAL_PERSON;
+import static net.hostsharing.hsadminng.hs.office.person.HsOfficePersonType.NATURAL_PERSON;
 import static net.hostsharing.hsadminng.test.JsonMatcher.lenientlyEquals;
+import static org.hamcrest.Matchers.containsString;
 import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.BDDMockito.given;
 import static org.mockito.Mockito.when;
 import static org.springframework.test.web.servlet.result.MockMvcResultHandlers.print;
 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
 
 @WebMvcTest(HsCredentialsController.class)
-@Import({ StrictMapper.class, JsonObjectMapperConfiguration.class, DisableSecurityConfig.class, MessageTranslator.class })
+@Import({
+        StrictMapper.class,
+        JsonObjectMapperConfiguration.class,
+        DisableSecurityConfig.class,
+        // HOWTO: test i18n translations
+        MessagesResourceConfig.class,
+        MessageTranslator.class })
 @ActiveProfiles("test")
 class HsCredentialsControllerRestTest {
 
@@ -79,6 +91,45 @@ class HsCredentialsControllerRestTest {
     @MockitoBean
     CredentialContextResourceToEntityMapper contextMapper;
 
+    @Test
+    void shouldFetchCurrentLoginUser() throws Exception {
+        // given
+        final UUID currentSubjectUuid = UUID.randomUUID();
+        given(contextMock.fetchCurrentSubjectUuid()).willReturn(currentSubjectUuid);
+        given(contextMock.isGlobalAdmin()).willReturn(true);
+        given(subjectRepo.findByUuid(currentSubjectUuid)).willReturn(
+                RbacSubjectEntity.builder().uuid(currentSubjectUuid).name("test-user").build()
+        );
+        given(credentialsRepo.findByUuid(currentSubjectUuid)).willReturn(
+                Optional.of(HsCredentialsEntity.builder()
+                        .uuid(currentSubjectUuid)
+                        .person(HsOfficePersonRbacEntity.builder()
+                                .uuid(PERSON_UUID)
+                                .personType(NATURAL_PERSON)
+                                .familyName("Miller")
+                                .givenName("Steph")
+                                .build())
+                        .subject(RbacSubjectEntity.builder().name("steph-miller").build())
+                        .build())
+        );
+
+        // when
+        mockMvc.perform(MockMvcRequestBuilders
+                        .get("/api/hs/accounts/current")
+                        .header("Authorization", "Bearer test")
+                        .accept(MediaType.APPLICATION_JSON))
+                .andDo(print())
+
+                // then
+                .andExpect(status().isOk())
+                .andExpect(jsonPath("$.subject.uuid").value(currentSubjectUuid.toString()))
+                .andExpect(jsonPath("$.subject.name").value("test-user"))
+                .andExpect(jsonPath("$.person.uuid").value(PERSON_UUID.toString()))
+                .andExpect(jsonPath("$.person.familyName").value("Miller"))
+                .andExpect(jsonPath("$.person.givenName").value("Steph"))
+                .andExpect(jsonPath("$.globalAdmin").value(true));
+    }
+
     @Test
     void shouldFilterInvalidContextsRegardingNonNaturalPerson() throws Exception {
         // given
@@ -123,7 +174,95 @@ class HsCredentialsControllerRestTest {
     }
 
     @Test
-    void patchCredentialsUsed() throws Exception {
+    void shouldRejectCreatingCredentialsForUnrepresentedPerson() throws Exception {
+        // given
+        final var personUuid = UUID.randomUUID();
+
+        final AtomicReference<RbacSubjectEntity> createdSubject = new AtomicReference<>();
+        given(subjectRepo.create(any())).willAnswer(invocation -> {
+            final var passedEntity = (RbacSubjectEntity) invocation.getArgument(0);
+            passedEntity.setUuid(UUID.randomUUID());
+            createdSubject.set(passedEntity); // Capture the instance
+            return passedEntity;
+        });
+        given(contextMock.fetchCurrentSubject()).willAnswer(invocation -> createdSubject.get().getName());
+        given(subjectRepo.findByUuid(any())).willAnswer(invocation -> createdSubject.get());
+        given(rbacPersonRepo.findByUuid(personUuid)).willReturn(Optional.of(
+                HsOfficePersonRbacEntity.builder().uuid(personUuid).personType(NATURAL_PERSON).build()
+        ));
+        given(rbacPersonRepo.findPersonsrepresentedByPersonWithUuid(personUuid)).willReturn(List.of(
+                // some persons, but not the one from the login-user itself
+                HsOfficePersonRbacEntity.builder().uuid(UUID.randomUUID()).personType(NATURAL_PERSON).build(),
+                HsOfficePersonRbacEntity.builder().uuid(UUID.randomUUID()).personType(LEGAL_PERSON).build()
+        ));
+
+        final var givenCredentialsUuid = UUID.randomUUID();
+
+        final var contextForNP = HsCredentialsContextRealEntity.builder()
+                .uuid(UUID.randomUUID())
+                .type("HSADMIN")
+                .qualifier("prod")
+                .onlyForNaturalPersons(true)
+                .build();
+        final var contextForAll = HsCredentialsContextRealEntity.builder()
+                .uuid(UUID.randomUUID())
+                .type("SSH")
+                .qualifier("prod")
+                .onlyForNaturalPersons(false)
+                .build();
+        final var credentialsEntity = HsCredentialsEntity.builder()
+                .uuid(givenCredentialsUuid)
+                .person(HsOfficePersonRbacEntity.builder()
+                        .uuid(PERSON_UUID)
+                        .personType(LEGAL_PERSON)
+                        .build())
+                .subject(RbacSubjectEntity.builder().name("some-nickname").build())
+                .loginContexts(Set.of(contextForNP, contextForAll))
+                .build();
+        when(credentialsRepo.findByUuid(givenCredentialsUuid))
+                .thenReturn(Optional.of(credentialsEntity));
+
+        // when
+        mockMvc.perform(MockMvcRequestBuilders
+                        .post("/api/hs/accounts/credentials")
+                        .header("Authorization", "Bearer test")
+                        // HOWTO: test i18n translations
+                        .header("Accept-Language", "de")
+                        .contentType(MediaType.APPLICATION_JSON)
+                        .content(
+                                """
+                                        {
+                                            "person.uuid": "${personUuid}",
+                                            "nickname": "${nickname}",
+                                            "active": true,
+                                            "globalUid": 30001,
+                                            "globalGid": 40001,
+                                            "contexts": [
+                                                {
+                                                    "uuid" : "11111111-1111-1111-1111-111111111111",
+                                                    "type" : "HSADMIN",
+                                                    "qualifier" : "prod",
+                                                    "onlyForNaturalPersons" : true,
+                                                    "publicAccess" : true
+                                                }
+                                            ]
+                                        }
+                                        """
+                                        .replace("${personUuid}", personUuid.toString())
+                                        .replace("${nickname}", "new-user")
+                        )
+                        .accept(MediaType.APPLICATION_JSON))
+                .andDo(print())
+
+                // then
+                .andExpect(status().is4xxClientError())
+                .andExpect(jsonPath("$.message", containsString(
+                        "Zugriff verweigert: personUuid \"${personUuid}\" wird von der eingeloggten Person nicht repräsentiert"
+                                .replace("${personUuid}", personUuid.toString()))));
+    }
+
+    @Test
+    void markCredentialsAsUsed() throws Exception {
 
         // given
         final var givenCredentialsUuid = UUID.randomUUID();

src/test/java/net/hostsharing/hsadminng/hs/accounts/HsCredentialsRepositoryIntegrationTest.java

@@ -1,9 +1,14 @@
 package net.hostsharing.hsadminng.hs.accounts;
 
 import net.hostsharing.hsadminng.context.Context;
+import net.hostsharing.hsadminng.hs.office.contact.HsOfficeContactRealEntity;
 import net.hostsharing.hsadminng.hs.office.person.HsOfficePersonRbacEntity;
-import net.hostsharing.hsadminng.rbac.context.ContextBasedTest;
+import net.hostsharing.hsadminng.hs.office.person.HsOfficePersonRealEntity;
+import net.hostsharing.hsadminng.hs.office.person.HsOfficePersonRealRepository;
+import net.hostsharing.hsadminng.hs.office.relation.HsOfficeRelationRealEntity;
+import net.hostsharing.hsadminng.hs.office.relation.HsOfficeRelationType;
 import net.hostsharing.hsadminng.rbac.subject.RbacSubjectEntity;
+import net.hostsharing.hsadminng.rbac.test.ContextBasedTestWithCleanup;
 import net.hostsharing.hsadminng.rbac.test.JpaAttempt;
 import org.hibernate.TransientObjectException;
 import org.junit.jupiter.api.BeforeEach;
@@ -22,15 +27,18 @@ import java.time.ZonedDateTime;
 import java.util.HashSet;
 import java.util.Set;
 
+import static net.hostsharing.hsadminng.hs.office.relation.HsOfficeRelationType.REPRESENTATIVE;
+import static net.hostsharing.hsadminng.rbac.test.JpaAttempt.attempt;
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.api.Assertions.catchThrowable;
 
 @DataJpaTest
 @Tag("generalIntegrationTest")
 @Import({ Context.class, JpaAttempt.class })
-class HsCredentialsRepositoryIntegrationTest extends ContextBasedTest {
+class HsCredentialsRepositoryIntegrationTest extends ContextBasedTestWithCleanup {
 
     private static final String SUPERUSER_ALEX_SUBJECT_NAME = "superuser-alex@hostsharing.net";
+    private static final String SUPERUSER_FRAN_SUBJECT_NAME = "superuser-fran@hostsharing.net";
     private static final String USER_DREW_SUBJECT_NAME = "selfregistered-user-drew@hostsharing.org";
     private static final String TEST_USER_SUBJECT_NAME = "selfregistered-test-user@hostsharing.org";
 
@@ -41,6 +49,9 @@ class HsCredentialsRepositoryIntegrationTest extends ContextBasedTest {
     @MockitoBean
     HttpServletRequest request;
 
+    @Autowired
+    private HsOfficePersonRealRepository personRepo;
+
     @Autowired
     private HsCredentialsRepository credentialsRepository;
 
@@ -74,7 +85,9 @@ class HsCredentialsRepositoryIntegrationTest extends ContextBasedTest {
         final var rowsBefore = query.getResultList();
 
         // then
-        assertThat(rowsBefore).as("hs_accounts.credentials_hv only contain no rows for a timestamp before test data creation").hasSize(0);
+        assertThat(rowsBefore)
+                .as("hs_accounts.credentials_hv only contain no rows for a timestamp before test data creation")
+                .hasSize(0);
 
         // and when
         historicalContext(Timestamp.from(ZonedDateTime.now().toInstant()));
@@ -82,7 +95,53 @@ class HsCredentialsRepositoryIntegrationTest extends ContextBasedTest {
         final var rowsAfter = query.getResultList();
 
         // then
-        assertThat(rowsAfter).as("hs_accounts.credentials_hv should now contain the test-data rows for the current timestamp").hasSize(2);
+        assertThat(rowsAfter)
+                .as("hs_accounts.credentials_hv should now contain the test-data rows for the current timestamp")
+                .hasSize(3);
+    }
+
+    @Test
+    void representativeShouldFindOwnAndRepresentedCredentialsByCurrentSubject() {
+        // given
+        final var firstGmbHPerson = givenPerson("First GmbH");
+        givenRelation(REPRESENTATIVE)
+                .withAnchorPersonLike(firstGmbHPerson)
+                .withHolder(drewPerson)
+                .withContact("some test contact");
+        givenCredentials()
+                .forSubject("first-gmbh")
+                .forPerson(firstGmbHPerson)
+                .withEMailAddress("first-gmbh@example.com");
+
+        // when
+        final var foundCredentials = attempt(
+                em, () -> {
+                    context(USER_DREW_SUBJECT_NAME);
+                    return credentialsRepository.findByCurrentSubject();
+                })
+                .assertNotNull().returnedValue();
+
+        // then
+        assertThat(foundCredentials).hasSize(2)
+                .map(HsCredentialsEntity::getEmailAddress)
+                .containsExactlyInAnyOrder("drew@example.org", "first-gmbh@example.com");
+    }
+
+    @Test
+    void globalAdminShouldFindOnlyOwnCredentialsByCurrentSubject() {
+
+        // when
+        final var foundCredentials = attempt(
+                em, () -> {
+                    context(SUPERUSER_FRAN_SUBJECT_NAME);
+                    return credentialsRepository.findByCurrentSubject();
+                })
+                .assertNotNull().returnedValue();
+
+        // then
+        assertThat(foundCredentials).hasSize(1)
+                .map(HsCredentialsEntity::getEmailAddress)
+                .containsExactlyInAnyOrder("fran@example.com");
     }
 
     @Test
@@ -101,28 +160,28 @@ class HsCredentialsRepositoryIntegrationTest extends ContextBasedTest {
         final var existingContext = loginContextRealRepo.findByTypeAndQualifier("HSADMIN", "prod")
                 .orElseThrow();
         final var newCredentials = HsCredentialsEntity.builder()
-                .subject(drewSubject)
+                .subject(testUserSubject)
-                .person(drewPerson)
+                .person(testUserPerson)
                 .active(true)
-                .emailAddress("drew.new@example.com")
+                .emailAddress("test-user@example.com")
-                .globalUid(2001)
+                .globalUid(2011)
-                .globalGid(2001)
+                .globalGid(2011)
                 .loginContexts(mutableSetOf(existingContext))
                 .build();
 
         // when
-        credentialsRepository.save(newCredentials);
+        toCleanup(credentialsRepository.save(newCredentials));
         em.flush();
         em.clear();
 
         // then
-        final var foundEntityOptional = credentialsRepository.findByUuid(drewSubject.getUuid());
+        final var foundEntityOptional = credentialsRepository.findByUuid(testUserSubject.getUuid());
         assertThat(foundEntityOptional).isPresent();
         final var foundEntity = foundEntityOptional.get();
-        assertThat(foundEntity.getEmailAddress()).isEqualTo("drew.new@example.com");
+        assertThat(foundEntity.getEmailAddress()).isEqualTo("test-user@example.com");
         assertThat(foundEntity.isActive()).isTrue();
         assertThat(foundEntity.getVersion()).isEqualTo(0); // Initial version
-        assertThat(foundEntity.getGlobalUid()).isEqualTo(2001);
+        assertThat(foundEntity.getGlobalUid()).isEqualTo(2011);
 
         assertThat(foundEntity.getLoginContexts()).hasSize(1)
                 .map(HsCredentialsContextRealEntity::toString).contains("loginContext(HSADMIN:prod:NP-ONLY:PUBLIC)");
@@ -240,4 +299,88 @@ class HsCredentialsRepositoryIntegrationTest extends ContextBasedTest {
     private <T> Set<T> mutableSetOf(final T... elements) {
         return new HashSet<T>(Set.of(elements));
     }
+
+    private HsOfficePersonRealEntity givenPerson(String personName) {
+        return personRepo.findPersonByOptionalNameLike(personName).getFirst();
+    }
+
+    private RelationBuilder givenRelation(HsOfficeRelationType relationType) {
+        return new RelationBuilder(relationType);
+    }
+
+    private CredentialsBuilder givenCredentials() {
+        return new CredentialsBuilder();
+    }
+
+    private class RelationBuilder {
+        private final HsOfficeRelationType relationType;
+        private HsOfficePersonRealEntity anchorPerson;
+        private HsOfficePersonRbacEntity holderPerson;
+        private HsOfficeContactRealEntity contact;
+
+        public RelationBuilder(HsOfficeRelationType relationType) {
+            this.relationType = relationType;
+        }
+
+        public RelationBuilder withAnchorPersonLike(HsOfficePersonRealEntity anchorPerson) {
+            this.anchorPerson = anchorPerson;
+            return this;
+        }
+
+        public RelationBuilder withHolder(HsOfficePersonRbacEntity holderPerson) {
+            this.holderPerson = holderPerson;
+            return this;
+        }
+
+        public HsOfficeRelationRealEntity withContact(String caption) {
+            this.contact = HsOfficeContactRealEntity.builder()
+                    .caption(caption)
+                    .build();
+            em.persist(contact);
+
+            final var relation = HsOfficeRelationRealEntity.builder()
+                    .type(relationType)
+                    .anchor(anchorPerson)
+                    .holder(em.getReference(HsOfficePersonRealEntity.class, holderPerson.getUuid()))
+                    .contact(contact)
+                    .build();
+            em.persist(relation);
+            em.flush();
+            return relation;
+        }
+    }
+
+    private class CredentialsBuilder {
+        private RbacSubjectEntity subject;
+        private HsOfficePersonRealEntity person;
+
+        public CredentialsBuilder forSubject(String subjectName) {
+            this.subject = RbacSubjectEntity.builder()
+                    .name(subjectName)
+                    .build();
+            em.persist(subject);
+            toCleanup(subject);
+            return this;
+        }
+
+        public CredentialsBuilder forPerson(HsOfficePersonRealEntity person) {
+            this.person = person;
+            return this;
+        }
+
+        public HsCredentialsEntity withEMailAddress(String emailAddress) {
+
+            final var credentials = HsCredentialsEntity.builder()
+                    .uuid(subject.getUuid())
+                    .subject(subject)
+                    .person(em.find(HsOfficePersonRbacEntity.class, person.getUuid()))
+                    .emailAddress(emailAddress)
+                    .active(true)
+                    .build();
+            em.persist(credentials);
+            toCleanup(credentials);
+            em.flush();
+            return credentials;
+        }
+    }
 }

src/test/java/net/hostsharing/hsadminng/hs/accounts/scenarios/CredentialsScenarioTests.java

@@ -49,6 +49,42 @@ class CredentialsScenarioTests extends ScenarioTest {
     @Nested
     @Order(10)
     @TestMethodOrder(MethodOrderer.OrderAnnotation.class)
+    class RbacContextScenarios {
+
+        @Test
+        @Order(1010)
+        @Produces("RBAC Context")
+        void shouldFetchRbacContext() {
+            new FetchRbacContext(scenarioTest)
+                    .given("subjectName", "superuser-fran@hostsharing.net")
+                    .given("assumedRoles", "rbactest.package#xxx00:ADMIN;rbactest.package#yyy00:ADMIN")
+                    .given("expectedToBeGlobalAdmin", true)
+                    .doRun()
+                    .keep();
+        }
+    }
+
+    @Nested
+    @Order(20)
+    @TestMethodOrder(MethodOrderer.OrderAnnotation.class)
+    class CurrentLoginUserScenarios {
+
+        @Test
+        @Order(2010)
+        @Produces("Current Login User")
+        void shouldFetchCurrentLoginUser() {
+            new CurrentLoginUser(scenarioTest)
+                    .given("subjectName", "superuser-fran@hostsharing.net")
+                    .given("personGivenName", "Fran")
+                    .given("expectedToBeGlobalAdmin", true)
+                    .doRun()
+                    .keep();
+        }
+    }
+
+    @Nested
+    @Order(30)
+    @TestMethodOrder(MethodOrderer.OrderAnnotation.class)
     class CredentialScenarios {
 
         @Test

src/test/java/net/hostsharing/hsadminng/hs/accounts/scenarios/CurrentLoginUser.java

@@ -0,0 +1,60 @@
+package net.hostsharing.hsadminng.hs.accounts.scenarios;
+
+import lombok.SneakyThrows;
+import net.hostsharing.hsadminng.hs.scenarios.ScenarioTest;
+import net.hostsharing.hsadminng.hs.scenarios.UseCase;
+
+
+import static io.restassured.http.ContentType.JSON;
+import static net.hostsharing.hsadminng.hs.scenarios.ScenarioTest.resolve;
+import static net.hostsharing.hsadminng.hs.scenarios.TemplateResolver.Resolver.DROP_COMMENTS;
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.springframework.http.HttpStatus.OK;
+
+public class CurrentLoginUser extends UseCase<CurrentLoginUser> {
+
+    public CurrentLoginUser(final ScenarioTest testSuite) {
+        super(testSuite);
+
+        introduction("Fetches data about the current login user.");
+    }
+
+    @Override
+    protected HttpResponse run() {
+
+        obtain("Person: %{personGivenName}", () ->
+                        httpGet("/api/hs/office/persons?name=" + uriEncoded("%{personGivenName}"))
+                                .expecting(OK).expecting(JSON),
+                response -> response.expectArrayElements(1).getFromBody("[0].uuid"),
+                "In production, data this query could result in multiple outputs. In that case, you have to find out which is the right one."
+        );
+
+        return obtain(
+                "Current Login User", () ->
+                        httpGet(
+                                "/api/hs/accounts/current", req -> req
+                                        .header("Authorization", resolve("Bearer %{subjectName}", DROP_COMMENTS))
+                        )
+                        .expecting(OK).expecting(JSON).expectObject()
+                                .extractValue("subject.name", "returnedSubjectName")
+                                .extractValue("person.givenName", "returnedGivenName")
+                                .extractValue("globalAdmin", "returnedGlobalAdmin")
+        ).expecting(OK).expecting(JSON);
+    }
+
+    @Override
+    @SneakyThrows
+    protected void verify(final UseCase<CurrentLoginUser>.HttpResponse response) {
+
+        assertThat(resolve("%{returnedSubjectName}", DROP_COMMENTS))
+                .isEqualTo(resolve("%{subjectName}", DROP_COMMENTS));
+
+        assertThat(resolve("%{returnedGivenName}", DROP_COMMENTS))
+                .isEqualTo(resolve("%{personGivenName}", DROP_COMMENTS));
+
+        assertThat(resolve("%{returnedGlobalAdmin}", DROP_COMMENTS))
+                .isEqualTo(resolve("%{expectedToBeGlobalAdmin}", DROP_COMMENTS));
+
+        super.verify(response);
+    }
+}

src/test/java/net/hostsharing/hsadminng/hs/accounts/scenarios/FetchRbacContext.java

@@ -0,0 +1,58 @@
+package net.hostsharing.hsadminng.hs.accounts.scenarios;
+
+import lombok.SneakyThrows;
+import net.hostsharing.hsadminng.hs.scenarios.ScenarioTest;
+import net.hostsharing.hsadminng.hs.scenarios.UseCase;
+
+import java.util.List;
+
+import static io.restassured.http.ContentType.JSON;
+import static net.hostsharing.hsadminng.hs.scenarios.ScenarioTest.resolve;
+import static net.hostsharing.hsadminng.hs.scenarios.ScenarioTest.resolveJsonArray;
+import static net.hostsharing.hsadminng.hs.scenarios.TemplateResolver.Resolver.DROP_COMMENTS;
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.springframework.http.HttpStatus.OK;
+
+public class FetchRbacContext extends UseCase<FetchRbacContext> {
+
+    public FetchRbacContext(final ScenarioTest testSuite) {
+        super(testSuite);
+
+        introduction("Fetches the RBAC context for the login user / current subject.");
+    }
+
+    @Override
+    protected HttpResponse run() {
+        return obtain(
+                "RBAC Context", () ->
+                        httpGet(
+                                "/api/rbac/context", req -> req
+                                        .header("Authorization", resolve("Bearer %{subjectName}", DROP_COMMENTS))
+                                        .header("assumed-roles", resolve("%{assumedRoles}", DROP_COMMENTS))
+                        )
+                        .expecting(OK).expecting(JSON).expectObject()
+                                .extractValue("subject.name", "returnedSubjectName")
+                                .extractValue("assumedRoles", "returnedAssumedRoles")
+                                .extractValue("globalAdmin", "returnedGlobalAdmin")
+        ).expecting(OK).expecting(JSON);
+    }
+
+    @Override
+    @SneakyThrows
+    protected void verify(final UseCase<FetchRbacContext>.HttpResponse response) {
+
+        // HOWTO: assert in UseCase.verify()
+
+        assertThat(resolve("%{returnedSubjectName}", DROP_COMMENTS))
+                .isEqualTo(resolve("%{subjectName}", DROP_COMMENTS));
+
+        assertThat(resolveJsonArray("%{returnedAssumedRoles}")
+                .stream().map(m -> m.get("roleName")).toList())
+                .isEqualTo(List.of(resolve("%{assumedRoles}", DROP_COMMENTS).split(";")));
+
+        assertThat(resolve("%{returnedGlobalAdmin}", DROP_COMMENTS))
+                .isEqualTo(resolve("%{expectedToBeGlobalAdmin}", DROP_COMMENTS));
+
+        super.verify(response);
+    }
+}

src/test/java/net/hostsharing/hsadminng/hs/office/debitor/HsOfficeDebitorRepositoryIntegrationTest.java

@@ -78,6 +78,7 @@ class HsOfficeDebitorRepositoryIntegrationTest extends ContextBasedTestWithClean
 
     @MockitoBean
     HttpServletRequest request;
+
     @Nested
     class CreateDebitor {
 
@@ -242,9 +243,9 @@ class HsOfficeDebitorRepositoryIntegrationTest extends ContextBasedTestWithClean
             // then
             allTheseDebitorsAreReturned(
                     result,
-                    "debitor(D-1000111: rel(anchor='LP First GmbH', type='DEBITOR', holder='LP First GmbH'), fir)",
+                    "debitor(D-1000111: rel(anchor='LP First GmbH', type=DEBITOR, holder='LP First GmbH'), fir)",
-                    "debitor(D-1000212: rel(anchor='LP Peter Smith - The Second Hand and Thrift Stores-n-Shipping e.K.', type='DEBITOR', holder='LP Peter Smith - The Second Hand and Thrift Stores-n-Shipping e.K.'), sec)",
+                    "debitor(D-1000212: rel(anchor='LP Peter Smith - The Second Hand and Thrift Stores-n-Shipping e.K.', type=DEBITOR, holder='LP Peter Smith - The Second Hand and Thrift Stores-n-Shipping e.K.'), sec)",
-                    "debitor(D-1000313: rel(anchor='IF Third OHG', type='DEBITOR', holder='IF Third OHG'), thi)");
+                    "debitor(D-1000313: rel(anchor='IF Third OHG', type=DEBITOR, holder='IF Third OHG'), thi)");
         }
 
         @ParameterizedTest
@@ -293,7 +294,7 @@ class HsOfficeDebitorRepositoryIntegrationTest extends ContextBasedTestWithClean
 
             // then
             assertThat(result).map(Object::toString).contains(
-                    "debitor(D-1000313: rel(anchor='IF Third OHG', type='DEBITOR', holder='IF Third OHG'), thi)");
+                    "debitor(D-1000313: rel(anchor='IF Third OHG', type=DEBITOR, holder='IF Third OHG'), thi)");
         }
     }
 
@@ -310,7 +311,7 @@ class HsOfficeDebitorRepositoryIntegrationTest extends ContextBasedTestWithClean
 
             // then
             exactlyTheseDebitorsAreReturned(result,
-                    "debitor(D-1000313: rel(anchor='IF Third OHG', type='DEBITOR', holder='IF Third OHG'), thi)");
+                    "debitor(D-1000313: rel(anchor='IF Third OHG', type=DEBITOR, holder='IF Third OHG'), thi)");
         }
     }
 
@@ -326,7 +327,7 @@ class HsOfficeDebitorRepositoryIntegrationTest extends ContextBasedTestWithClean
             final var result = debitorRepo.findDebitorsByOptionalNameLike("third contact");
 
             // then
-            exactlyTheseDebitorsAreReturned(result, "debitor(D-1000313: rel(anchor='IF Third OHG', type='DEBITOR', holder='IF Third OHG'), thi)");
+            exactlyTheseDebitorsAreReturned(result, "debitor(D-1000313: rel(anchor='IF Third OHG', type=DEBITOR, holder='IF Third OHG'), thi)");
         }
     }
 

src/test/java/net/hostsharing/hsadminng/hs/office/partner/HsOfficePartnerControllerAcceptanceTest.java

@@ -413,7 +413,7 @@ class HsOfficePartnerControllerAcceptanceTest extends ContextBasedTestWithCleanu
             final var newPartnerPersonUuid = givenPartner.getPartnerRel().getHolder().getUuid();
             assertThat(relationRepo.findRelationRelatedToPersonUuidRelationTypeMarkPersonAndContactData(newPartnerPersonUuid, EX_PARTNER, null, null, null))
                     .map(HsOfficeRelation::toShortString)
-                    .contains("rel(anchor='NP Winkler, Paul', type='EX_PARTNER', holder='UF Erben Bessler')");
+                    .contains("rel(anchor='NP Winkler, Paul', type=EX_PARTNER, holder='UF Erben Bessler')");
         }
 
         @Test

src/test/java/net/hostsharing/hsadminng/hs/office/person/HsOfficePersonEntityUnitTest.java

@@ -144,6 +144,7 @@ class HsOfficePersonEntityUnitTest {
 
         assertThat(actualDisplay).isEqualTo("person(salutation='Herr', title='Prof. Dr.', familyName='some family name', givenName='some given name')");
     }
+
     @Test
     void toStringWithSalutationAndWithoutTitleSkipsTitle() {
         final var givenPersonEntity = HsOfficePersonRbacEntity.builder()

src/test/java/net/hostsharing/hsadminng/hs/office/person/HsOfficePersonRbacRepositoryIntegrationTest.java

@@ -258,6 +258,23 @@ class HsOfficePersonRbacRepositoryIntegrationTest extends ContextBasedTestWithCl
         }
     }
 
+    @Test
+    public void findPersonsrepresentedByPersonWithUuid() {
+
+        // given
+        context("superuser-alex@hostsharing.net");
+        final var personUuid = personRbacRepo.findPersonByOptionalNameLike("Fouler").getFirst().getUuid();
+
+        // when
+        @SuppressWarnings("unchecked") final List<HsOfficePersonRbacEntity> representedPersons = personRbacRepo.findPersonsrepresentedByPersonWithUuid(personUuid);
+
+        // then
+        assertThat(representedPersons).map(Object::toString).containsExactlyInAnyOrder(
+                "person(personType=NP, familyName='Fouler', givenName='Ellie')",
+                "person(personType=LP, tradeName='Fourth eG')"
+        );
+    }
+
     @Test
     public void auditJournalLogIsAvailable() {
         // given
@@ -265,7 +282,7 @@ class HsOfficePersonRbacRepositoryIntegrationTest extends ContextBasedTestWithCl
                 select currentTask, targetTable, targetOp, targetdelta->>'tradename', targetdelta->>'lastname'
                     from base.tx_journal_v
                     where targettable = 'hs_office.person';
-                    """);
+                """);
 
         // when
         @SuppressWarnings("unchecked") final List<Object[]> customerLogEntries = query.getResultList();

src/test/java/net/hostsharing/hsadminng/hs/office/relation/HsOfficeRealRelationRepositoryIntegrationTest.java

@@ -62,10 +62,10 @@ class HsOfficeRealRelationRepositoryIntegrationTest extends ContextBasedTestWith
             context("superuser-alex@hostsharing.net"); // just to be able to access RBAc-entities persons+contact
             exactlyTheseRelationsAreReturned(
                     result,
-                    "rel(anchor='LP Peter Smith - The Second Hand and Thrift Stores-n-Shipping e.K.', type='REPRESENTATIVE', holder='NP Smith, Peter', contact='second contact')",
+                    "rel(anchor='LP Peter Smith - The Second Hand and Thrift Stores-n-Shipping e.K.', type=REPRESENTATIVE, holder='NP Smith, Peter', contact='second contact')",
-                    "rel(anchor='LP Hostsharing eG', type='PARTNER', holder='NP Smith, Peter', contact='sixth contact')",
+                    "rel(anchor='LP Hostsharing eG', type=PARTNER, holder='NP Smith, Peter', contact='sixth contact')",
-                    "rel(anchor='NP Smith, Peter', type='DEBITOR', holder='NP Smith, Peter', contact='third contact')",
+                    "rel(anchor='NP Smith, Peter', type=DEBITOR, holder='NP Smith, Peter', contact='third contact')",
-                    "rel(anchor='IF Third OHG', type='SUBSCRIBER', mark='members-announce', holder='NP Smith, Peter', contact='third contact')"
+                    "rel(anchor='IF Third OHG', type=SUBSCRIBER, mark='members-announce', holder='NP Smith, Peter', contact='third contact')"
             );
         }
 
@@ -81,7 +81,7 @@ class HsOfficeRealRelationRepositoryIntegrationTest extends ContextBasedTestWith
             context("superuser-alex@hostsharing.net"); // just to be able to access RBAc-entities persons+contact
             exactlyTheseRelationsAreReturned(
                     result,
-                    "rel(anchor='LP Peter Smith - The Second Hand and Thrift Stores-n-Shipping e.K.', type='REPRESENTATIVE', holder='NP Smith, Peter', contact='second contact')"
+                    "rel(anchor='LP Peter Smith - The Second Hand and Thrift Stores-n-Shipping e.K.', type=REPRESENTATIVE, holder='NP Smith, Peter', contact='second contact')"
             );
         }
     }

src/test/java/net/hostsharing/hsadminng/hs/office/relation/HsOfficeRelationRepositoryIntegrationTest.java

@@ -126,7 +126,7 @@ class HsOfficeRelationRepositoryIntegrationTest extends ContextBasedTestWithClea
             final var stored = relationRbacRepo.findByUuid(result.returnedValue().getUuid());
             assertThat(stored).isNotEmpty().map(HsOfficeRelation::toString).get()
                     .isEqualTo(
-                            "rel(anchor='UF Erben Bessler', type='SUBSCRIBER', mark='operations-announce', holder='NP Winkler, Paul', contact='fourth contact')");
+                            "rel(anchor='UF Erben Bessler', type=SUBSCRIBER, mark='operations-announce', holder='NP Winkler, Paul', contact='fourth contact')");
         }
 
         @Test
@@ -213,9 +213,9 @@ class HsOfficeRelationRepositoryIntegrationTest extends ContextBasedTestWithClea
             // then
             allTheseRelationsAreReturned(
                     result,
-                    "rel(anchor='LP Hostsharing eG', type='PARTNER', holder='NP Smith, Peter', contact='sixth contact')",
+                    "rel(anchor='LP Hostsharing eG', type=PARTNER, holder='NP Smith, Peter', contact='sixth contact')",
-                    "rel(anchor='LP Peter Smith - The Second Hand and Thrift Stores-n-Shipping e.K.', type='REPRESENTATIVE', holder='NP Smith, Peter', contact='second contact')",
+                    "rel(anchor='LP Peter Smith - The Second Hand and Thrift Stores-n-Shipping e.K.', type=REPRESENTATIVE, holder='NP Smith, Peter', contact='second contact')",
-                    "rel(anchor='IF Third OHG', type='SUBSCRIBER', mark='members-announce', holder='NP Smith, Peter', contact='third contact')");
+                    "rel(anchor='IF Third OHG', type=SUBSCRIBER, mark='members-announce', holder='NP Smith, Peter', contact='third contact')");
         }
 
         @Test
@@ -237,10 +237,10 @@ class HsOfficeRelationRepositoryIntegrationTest extends ContextBasedTestWithClea
             // then:
             exactlyTheseRelationsAreReturned(
                     result,
-                    "rel(anchor='LP Peter Smith - The Second Hand and Thrift Stores-n-Shipping e.K.', type='REPRESENTATIVE', holder='NP Smith, Peter', contact='second contact')",
+                    "rel(anchor='LP Peter Smith - The Second Hand and Thrift Stores-n-Shipping e.K.', type=REPRESENTATIVE, holder='NP Smith, Peter', contact='second contact')",
-                    "rel(anchor='IF Third OHG', type='SUBSCRIBER', mark='members-announce', holder='NP Smith, Peter', contact='third contact')",
+                    "rel(anchor='IF Third OHG', type=SUBSCRIBER, mark='members-announce', holder='NP Smith, Peter', contact='third contact')",
-                    "rel(anchor='LP Hostsharing eG', type='PARTNER', holder='NP Smith, Peter', contact='sixth contact')",
+                    "rel(anchor='LP Hostsharing eG', type=PARTNER, holder='NP Smith, Peter', contact='sixth contact')",
-                    "rel(anchor='NP Smith, Peter', type='DEBITOR', holder='NP Smith, Peter', contact='third contact')");
+                    "rel(anchor='NP Smith, Peter', type=DEBITOR, holder='NP Smith, Peter', contact='third contact')");
         }
     }
 

src/test/java/net/hostsharing/hsadminng/hs/office/sepamandate/HsOfficeSepaMandateControllerAcceptanceTest.java

@@ -383,7 +383,7 @@ class HsOfficeSepaMandateControllerAcceptanceTest extends ContextBasedTestWithCl
             context.define("superuser-alex@hostsharing.net");
             assertThat(sepaMandateRepo.findByUuid(givenSepaMandate.getUuid())).isPresent().get()
                     .matches(mandate -> {
-                        assertThat(mandate.getDebitor().toString()).isEqualTo("debitor(D-1000111: rel(anchor='LP First GmbH', type='DEBITOR', holder='LP First GmbH'), fir)");
+                        assertThat(mandate.getDebitor().toString()).isEqualTo("debitor(D-1000111: rel(anchor='LP First GmbH', type=DEBITOR, holder='LP First GmbH'), fir)");
                         assertThat(mandate.getBankAccount().toShortString()).isEqualTo("First GmbH");
                         assertThat(mandate.getReference()).isEqualTo("temp ref CAT Z - patched");
                         assertThat(mandate.getValidFrom()).isEqualTo("2020-06-05");
@@ -424,7 +424,8 @@ class HsOfficeSepaMandateControllerAcceptanceTest extends ContextBasedTestWithCl
             // finally, the sepaMandate is actually updated
             assertThat(sepaMandateRepo.findByUuid(givenSepaMandate.getUuid())).isPresent().get()
                     .matches(mandate -> {
-                        assertThat(mandate.getDebitor().toString()).isEqualTo("debitor(D-1000111: rel(anchor='LP First GmbH', type='DEBITOR', holder='LP First GmbH'), fir)");
+                        assertThat(mandate.getDebitor().toString())
+                                .isEqualTo("debitor(D-1000111: rel(anchor='LP First GmbH', type=DEBITOR, holder='LP First GmbH'), fir)");
                         assertThat(mandate.getBankAccount().toShortString()).isEqualTo("First GmbH");
                         assertThat(mandate.getReference()).isEqualTo("temp ref CAT Z");
                         assertThat(mandate.getValidity().asString()).isEqualTo("[2022-11-01,2023-01-01)");

src/test/java/net/hostsharing/hsadminng/hs/scenarios/ScenarioTest.java

@@ -1,9 +1,11 @@
 package net.hostsharing.hsadminng.hs.scenarios;
 
+import com.fasterxml.jackson.core.type.TypeReference;
+import com.fasterxml.jackson.databind.ObjectMapper;
 import lombok.SneakyThrows;
+import net.hostsharing.hsadminng.hs.scenarios.TemplateResolver.Resolver;
 import net.hostsharing.hsadminng.rbac.context.ContextBasedTest;
 import net.hostsharing.hsadminng.rbac.test.JpaAttempt;
-import net.hostsharing.hsadminng.hs.scenarios.TemplateResolver.Resolver;
 import org.apache.commons.collections4.SetUtils;
 import org.apache.commons.lang3.ArrayUtils;
 import org.jetbrains.annotations.NotNull;
@@ -17,6 +19,7 @@ import java.lang.reflect.Method;
 import java.math.BigDecimal;
 import java.util.HashMap;
 import java.util.LinkedHashMap;
+import java.util.List;
 import java.util.Map;
 import java.util.Optional;
 import java.util.Stack;
@@ -159,7 +162,7 @@ public abstract class ScenarioTest extends ContextBasedTest {
                         assertThat(knowVariables().containsKey(declaredAlias))
                                 .as("@Producer method " + currentTestMethod.getName() +
                                         " did declare but not produce \"" + declaredAlias + "\"")
-                                .isTrue() );
+                                .isTrue());
             }
         });
     }
@@ -203,6 +206,14 @@ public abstract class ScenarioTest extends ContextBasedTest {
         return resolved;
     }
 
+    @SneakyThrows
+    public static List<Map<String, Object>> resolveJsonArray(final String text) {
+        return new ObjectMapper().readValue(
+                resolve(text, DROP_COMMENTS),
+                new TypeReference<>() {}
+        );
+    }
+
     public static Object resolveTyped(final String resolvableText) {
         final var resolved = resolve(resolvableText, DROP_COMMENTS);
         try {

src/test/java/net/hostsharing/hsadminng/hs/scenarios/UseCase.java

@@ -155,18 +155,26 @@ public abstract class UseCase<T extends UseCase<?>> {
     }
 
     @SneakyThrows
-    public final HttpResponse httpGet(final String uriPathWithPlaceholders) {
+    public final HttpResponse httpGet(
-        final var uriPath = ScenarioTest.resolve(uriPathWithPlaceholders, DROP_COMMENTS);
+            final String uriPathWithPlaceholder,
-        final var request = HttpRequest.newBuilder()
+            final Function<HttpRequest.Builder, HttpRequest.Builder> requestCustomizer) {
+        final var uriPath = ScenarioTest.resolve(uriPathWithPlaceholder, DROP_COMMENTS);
+        final var requestBuilder = HttpRequest.newBuilder()
                 .GET()
                 .uri(new URI("http://localhost:" + testSuite.port + uriPath))
-                .header("Authorization", "Bearer " + ScenarioTest.RUN_AS_USER)
+                .timeout(seconds(HTTP_TIMEOUT_SECONDS));
-                .timeout(seconds(HTTP_TIMEOUT_SECONDS))
+        final var customizedRequestBuilder = requestCustomizer.apply(requestBuilder);
-                .build();
+        final var request = customizedRequestBuilder.build();
         final var response = client.send(request, BodyHandlers.ofString());
         return new HttpResponse(HttpMethod.GET, uriPath, null, response);
     }
 
+    @SneakyThrows
+    public final HttpResponse httpGet(final String uriPathWithPlaceholders) {
+       return httpGet(uriPathWithPlaceholders,
+               req -> req.header("Authorization", "Bearer " + ScenarioTest.RUN_AS_USER));
+    }
+
     @SneakyThrows
     public final HttpResponse httpPost(final String uriPathWithPlaceholders, final JsonTemplate bodyJsonTemplate) {
         final var uriPath = ScenarioTest.resolve(uriPathWithPlaceholders, DROP_COMMENTS);

src/test/java/net/hostsharing/hsadminng/rbac/context/ContextIntegrationTests.java

@@ -68,7 +68,7 @@ class ContextIntegrationTests {
 
         assertThat(context.fetchCurrentSubjectUuid()).isNotNull();
 
-        assertThat(context.fetchAssumedRoles()).isEmpty();
+        assertThat(context.fetchAssumedRolesNames()).isEmpty();
 
         assertThat(context.fetchCurrentSubjectOrAssumedRolesUuids())
                 .containsExactly(context.fetchCurrentSubjectUuid());
@@ -90,7 +90,7 @@ class ContextIntegrationTests {
 
         assertThat(context.fetchCurrentSubjectUuid()).isNotNull();
 
-        assertThat(context.fetchAssumedRoles()).isEqualTo(Array.of("rbactest.package#yyy00:ADMIN"));
+        assertThat(context.fetchAssumedRolesNames()).isEqualTo(Array.of("rbactest.package#yyy00:ADMIN"));
 
         assertThat(context.fetchCurrentSubjectOrAssumedRolesUuids())
                 .containsExactly(context.fetchCurrentSubjectOrAssumedRolesUuids());
@@ -133,7 +133,7 @@ class ContextIntegrationTests {
         assertThat(currentSubject).isEqualTo("superuser-alex@hostsharing.net");
 
         // then
-        assertThat(context.fetchAssumedRoles())
+        assertThat(context.fetchAssumedRolesNames())
                 .isEqualTo(Array.of("rbactest.customer#xxx:OWNER", "rbactest.customer#yyy:OWNER"));
         assertThat(context.fetchCurrentSubjectOrAssumedRolesUuids()).hasSize(2);
     }

src/test/java/net/hostsharing/hsadminng/rbac/context/RbacContextControllerRestTest.java

@@ -0,0 +1,126 @@
+package net.hostsharing.hsadminng.rbac.context;
+
+import net.hostsharing.hsadminng.config.DisableSecurityConfig;
+import net.hostsharing.hsadminng.config.MessageTranslator;
+import net.hostsharing.hsadminng.context.Context;
+import net.hostsharing.hsadminng.mapper.StrictMapper;
+import net.hostsharing.hsadminng.persistence.EntityManagerWrapper;
+import net.hostsharing.hsadminng.rbac.role.RbacRoleEntity;
+import net.hostsharing.hsadminng.rbac.role.RbacRoleRepository;
+import net.hostsharing.hsadminng.rbac.role.RbacRoleType;
+import net.hostsharing.hsadminng.rbac.subject.RbacSubjectEntity;
+import net.hostsharing.hsadminng.rbac.subject.RbacSubjectRepository;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest;
+import org.springframework.context.annotation.Import;
+import org.springframework.http.MediaType;
+import org.springframework.test.context.ActiveProfiles;
+import org.springframework.test.context.bean.override.mockito.MockitoBean;
+import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
+
+import jakarta.persistence.EntityManagerFactory;
+import jakarta.persistence.SynchronizationType;
+import java.util.Arrays;
+import java.util.Map;
+import java.util.UUID;
+
+import static org.hamcrest.Matchers.hasSize;
+import static org.hamcrest.Matchers.is;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.when;
+import static org.springframework.test.web.servlet.result.MockMvcResultHandlers.print;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+@WebMvcTest(RbacContextController.class)
+@Import({ StrictMapper.class, DisableSecurityConfig.class, MessageTranslator.class })
+@ActiveProfiles("test")
+class RbacContextControllerRestTest {
+
+    private static final String GIVEN_SUBJECT_NAME = "superuser-alex@hostsharing.net";
+    private static final boolean GIVEN_GLOBAL_ADMIN = true;
+
+    @Autowired
+    MockMvc mockMvc;
+
+    @MockitoBean
+    Context contextMock;
+
+    @MockitoBean
+    RbacRoleRepository rbacRoleRepository;
+
+    @MockitoBean
+    RbacSubjectRepository rbacSubjectRepository;
+
+    @MockitoBean
+    EntityManagerWrapper em;
+
+    @MockitoBean
+    EntityManagerFactory emf;
+
+
+    @BeforeEach
+    void init() {
+        when(emf.createEntityManager()).thenReturn(em);
+        when(emf.createEntityManager(any(Map.class))).thenReturn(em);
+        when(emf.createEntityManager(any(SynchronizationType.class))).thenReturn(em);
+        when(emf.createEntityManager(any(SynchronizationType.class), any(Map.class))).thenReturn(em);
+
+        // current subject uuid mock
+        final var mockUuid = UUID.randomUUID();
+        when(contextMock.fetchCurrentSubjectUuid()).thenReturn(mockUuid);
+
+        // find by uuid mock
+        final var mockSubject = new RbacSubjectEntity();
+        mockSubject.setUuid(mockUuid);
+        mockSubject.setName(GIVEN_SUBJECT_NAME);
+        when(rbacSubjectRepository.findByUuid(mockUuid)).thenReturn(mockSubject);
+    }
+
+    @Test
+    void apiContextWillReturnCurrentContext() throws Exception {
+
+        // given
+        final var rolesToAssume = "rbactest.package#xxx00:OWNER;rbactest.package#yyy00:OWNER";
+        when(contextMock.isGlobalAdmin()).thenReturn(GIVEN_GLOBAL_ADMIN);
+        when(rbacRoleRepository.fetchAssumedRoles()).thenReturn(
+                Arrays.stream(rolesToAssume.split(";"))
+                        .map(RbacRoleDescriptor::fromRoleName)
+                        .map(roleDesc -> new RbacRoleEntity(
+                                UUID.randomUUID(), UUID.randomUUID(),
+                                roleDesc.tableName, roleDesc.objectIdName, roleDesc.roleType,
+                                roleDesc.roleName))
+                        .toList()
+        );
+
+        // when
+        mockMvc.perform(MockMvcRequestBuilders
+                        .get("/api/rbac/context")
+                        .header("Authorization", "Bearer " + GIVEN_SUBJECT_NAME)
+                        .header("assumed-roles", rolesToAssume)
+                        .accept(MediaType.APPLICATION_JSON))
+                .andDo(print())
+
+                // then
+                .andExpect(status().isOk())
+                .andExpect(jsonPath("$.subject.name", is(GIVEN_SUBJECT_NAME)))
+                .andExpect(jsonPath("$.globalAdmin", is(GIVEN_GLOBAL_ADMIN)))
+                .andExpect(jsonPath("$.assumedRoles", hasSize(2)))
+                .andExpect(jsonPath("$.assumedRoles[0].roleName", is("rbactest.package#xxx00:OWNER")))
+                .andExpect(jsonPath("$.assumedRoles[1].roleName", is("rbactest.package#yyy00:OWNER")));
+    }
+
+    record RbacRoleDescriptor(String roleName, String tableName, String objectIdName, RbacRoleType roleType) {
+
+        private static RbacRoleDescriptor fromRoleName(final String roleName) {
+            final var tablePlus = roleName.split("#");
+            final var tableName = tablePlus[0];
+            final var objectId = tablePlus[1].split(":")[0];
+            final var roleType = RbacRoleType.valueOf(tablePlus[1].split(":")[1]);
+            return new RbacRoleDescriptor(roleName, tableName, objectId, roleType);
+        }
+    }
+}

src/test/java/net/hostsharing/hsadminng/rbac/grant/RbacGrantsDiagramServiceIntegrationTest.java

@@ -100,6 +100,6 @@ class RbacGrantsDiagramServiceIntegrationTest extends ContextBasedTestWithCleanu
         final var targetObject = (UUID) em.createNativeQuery("SELECT uuid FROM hs_office.coopassettx WHERE reference='ref 1000101-1'").getSingleResult();
         final var graph = grantsMermaidService.allGrantsFrom(targetObject, "view", EnumSet.of(Include.USERS));
 
-        RbacGrantsDiagramService.writeToFile(join(";", context.fetchAssumedRoles()), graph, "doc/all-grants.md");
+        RbacGrantsDiagramService.writeToFile(join(";", context.fetchAssumedRolesNames()), graph, "doc/all-grants.md");
     }
 }

src/test/java/net/hostsharing/hsadminng/rbac/role/RbacRoleRepositoryIntegrationTest.java

@@ -177,6 +177,31 @@ class RbacRoleRepositoryIntegrationTest {
         }
     }
 
+    @Nested
+    class FetchAssumedRoles {
+
+        @Test
+        void someSubject_withoutAssumedRole_fetchesNoAssumedRoles() {
+            context.define("customer-admin@xxx.example.com");
+
+            final var result = rbacRoleRepository.fetchAssumedRoles();
+
+            assertThat(result).isNotNull().hasSize(0);
+        }
+
+        @Test
+        void someSubject_withAssumedRoles_fetchesAssumedRoles() {
+            context.define("customer-admin@xxx.example.com",
+                    "rbactest.package#xxx00:OWNER;rbactest.package#xxx01:OWNER;rbactest.package#xxx02:OWNER");
+
+            final var result = rbacRoleRepository.fetchAssumedRoles();
+
+            assertThat(result).isNotNull().hasSize(3)
+                    .extracting(RbacRoleEntity::getRoleName)
+                    .contains("rbactest.package#xxx00:OWNER", "rbactest.package#xxx01:OWNER", "rbactest.package#xxx02:OWNER");
+        }
+    }
+
     void exactlyTheseRbacRolesAreReturned(final List<RbacRoleEntity> actualResult, final String... expectedRoleNames) {
         assertThat(actualResult)
                 .extracting(RbacRoleEntity::getRoleName)

src/test/java/net/hostsharing/hsadminng/rbac/test/ContextBasedTestWithCleanup.java

@@ -1,5 +1,6 @@
 package net.hostsharing.hsadminng.rbac.test;
 
+import net.hostsharing.hsadminng.persistence.ImmutableBaseEntity;
 import net.hostsharing.hsadminng.rbac.context.ContextBasedTest;
 import net.hostsharing.hsadminng.persistence.BaseEntity;
 import net.hostsharing.hsadminng.rbac.grant.RbacGrantEntity;
@@ -52,7 +53,7 @@ public abstract class ContextBasedTestWithCleanup extends ContextBasedTest {
     @Autowired
     JpaAttempt jpaAttempt;
 
-    private TreeMap<UUID, Class<? extends BaseEntity>> entitiesToCleanup = new TreeMap<>();
+    private TreeMap<UUID, Class<? extends ImmutableBaseEntity>> entitiesToCleanup = new TreeMap<>();
 
     private static Long latestIntialTestDataSerialId;
     private static boolean countersInitialized = false;
@@ -67,19 +68,19 @@ public abstract class ContextBasedTestWithCleanup extends ContextBasedTest {
 
     private TestInfo testInfo;
 
-    public <T extends BaseEntity> T refresh(final T entity) {
+    public <T extends ImmutableBaseEntity> T refresh(final T entity) {
         final var merged = em.merge(entity);
         em.refresh(merged);
         return merged;
     }
 
-    public UUID toCleanup(final Class<? extends BaseEntity> entityClass, final UUID uuidToCleanup) {
+    public UUID toCleanup(final Class<? extends ImmutableBaseEntity> entityClass, final UUID uuidToCleanup) {
         out.println("toCleanup(" + entityClass.getSimpleName() + ", " + uuidToCleanup + ")");
         entitiesToCleanup.put(uuidToCleanup, entityClass);
         return uuidToCleanup;
     }
 
-    public <E extends BaseEntity> E toCleanup(final E entity) {
+    public <E extends ImmutableBaseEntity> E toCleanup(final E entity) {
         out.println("toCleanup(" + entity.getClass() + ", " + entity.getUuid());
         if ( entity.getUuid() == null ) {
             throw new IllegalArgumentException("only persisted entities with valid uuid allowed");