Commit 8fc622f8 authored by Torsten Grote's avatar Torsten Grote

[bramble] Add support for contact aliases

Foundation for #41
parent 22eed910
......@@ -4,8 +4,12 @@ import org.briarproject.bramble.api.identity.Author;
import org.briarproject.bramble.api.identity.AuthorId;
import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
import javax.annotation.Nullable;
import javax.annotation.concurrent.Immutable;
import static org.briarproject.bramble.api.identity.AuthorConstants.MAX_AUTHOR_NAME_LENGTH;
import static org.briarproject.bramble.util.StringUtils.toUtf8;
@Immutable
@NotNullByDefault
public class Contact {
......@@ -13,13 +17,21 @@ public class Contact {
private final ContactId id;
private final Author author;
private final AuthorId localAuthorId;
@Nullable
private final String alias;
private final boolean verified, active;
public Contact(ContactId id, Author author, AuthorId localAuthorId,
boolean verified, boolean active) {
@Nullable String alias, boolean verified, boolean active) {
if (alias != null) {
int aliasLength = toUtf8(alias).length;
if (aliasLength == 0 || aliasLength > MAX_AUTHOR_NAME_LENGTH)
throw new IllegalArgumentException();
}
this.id = id;
this.author = author;
this.localAuthorId = localAuthorId;
this.alias = alias;
this.verified = verified;
this.active = active;
}
......@@ -36,6 +48,11 @@ public class Contact {
return localAuthorId;
}
@Nullable
public String getAlias() {
return alias;
}
public boolean isVerified() {
return verified;
}
......
......@@ -10,6 +10,8 @@ import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
import java.util.Collection;
import javax.annotation.Nullable;
@NotNullByDefault
public interface ContactManager {
......@@ -93,6 +95,12 @@ public interface ContactManager {
void setContactActive(Transaction txn, ContactId c, boolean active)
throws DbException;
/**
* Sets an alias name for the contact or unsets it if alias is null.
*/
void setContactAlias(ContactId c, @Nullable String alias)
throws DbException;
/**
* Return true if a contact with this name and public key already exists
*/
......
......@@ -515,6 +515,12 @@ public interface DatabaseComponent {
void setContactActive(Transaction txn, ContactId c, boolean active)
throws DbException;
/**
* Sets an alias name for the contact or unsets it if alias is null.
*/
void setContactAlias(Transaction txn, ContactId c, @Nullable String alias)
throws DbException;
/**
* Sets the given group's visibility to the given contact.
*/
......
......@@ -18,9 +18,13 @@ import java.util.Collection;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
import javax.annotation.Nullable;
import javax.annotation.concurrent.ThreadSafe;
import javax.inject.Inject;
import static org.briarproject.bramble.api.identity.AuthorConstants.MAX_AUTHOR_NAME_LENGTH;
import static org.briarproject.bramble.util.StringUtils.toUtf8;
@ThreadSafe
@NotNullByDefault
class ContactManagerImpl implements ContactManager {
......@@ -148,6 +152,17 @@ class ContactManagerImpl implements ContactManager {
db.setContactActive(txn, c, active);
}
@Override
public void setContactAlias(ContactId c, @Nullable String alias)
throws DbException {
if (alias != null) {
int aliasLength = toUtf8(alias).length;
if (aliasLength == 0 || aliasLength > MAX_AUTHOR_NAME_LENGTH)
throw new IllegalArgumentException();
}
db.transaction(false, txn -> db.setContactAlias(txn, c, alias));
}
@Override
public boolean contactExists(Transaction txn, AuthorId remoteAuthorId,
AuthorId localAuthorId) throws DbException {
......
......@@ -616,6 +616,12 @@ interface Database<T> {
void setContactActive(T txn, ContactId c, boolean active)
throws DbException;
/**
* Sets an alias name for a contact.
*/
void setContactAlias(T txn, ContactId c, @Nullable String alias)
throws DbException;
/**
* Sets the given group's visibility to the given contact to either
* {@link Visibility VISIBLE} or {@link Visibility SHARED}.
......
......@@ -859,6 +859,16 @@ class DatabaseComponentImpl<T> implements DatabaseComponent {
transaction.attach(new ContactStatusChangedEvent(c, active));
}
@Override
public void setContactAlias(Transaction transaction, ContactId c,
String alias) throws DbException {
if (transaction.isReadOnly()) throw new IllegalArgumentException();
T txn = unbox(transaction);
if (!db.containsContact(txn, c))
throw new NoSuchContactException();
db.setContactAlias(txn, c, alias);
}
@Override
public void setGroupVisibility(Transaction transaction, ContactId c,
GroupId g, Visibility v) throws DbException {
......
......@@ -56,6 +56,7 @@ import java.util.logging.Logger;
import javax.annotation.Nullable;
import static java.sql.Types.INTEGER;
import static java.sql.Types.VARCHAR;
import static java.util.logging.Level.INFO;
import static java.util.logging.Level.WARNING;
import static org.briarproject.bramble.api.db.Metadata.REMOVE;
......@@ -83,7 +84,7 @@ import static org.briarproject.bramble.util.LogUtils.now;
abstract class JdbcDatabase implements Database<Connection> {
// Package access for testing
static final int CODE_SCHEMA_VERSION = 40;
static final int CODE_SCHEMA_VERSION = 41;
// Rotation period offsets for incoming transport keys
private static final int OFFSET_PREV = -1;
......@@ -113,6 +114,7 @@ abstract class JdbcDatabase implements Database<Connection> {
+ " authorId _HASH NOT NULL,"
+ " formatVersion INT NOT NULL,"
+ " name _STRING NOT NULL,"
+ " alias _STRING," // Null if no alias exists
+ " publicKey _BINARY NOT NULL,"
+ " localAuthorId _HASH NOT NULL,"
+ " verified BOOLEAN NOT NULL,"
......@@ -427,7 +429,11 @@ abstract class JdbcDatabase implements Database<Connection> {
// Package access for testing
List<Migration<Connection>> getMigrations() {
return Arrays.asList(new Migration38_39(), new Migration39_40());
return Arrays.asList(
new Migration38_39(),
new Migration39_40(),
new Migration40_41()
);
}
private boolean isCompactionDue(Settings s) {
......@@ -1258,8 +1264,8 @@ abstract class JdbcDatabase implements Database<Connection> {
PreparedStatement ps = null;
ResultSet rs = null;
try {
String sql = "SELECT authorId, formatVersion, name, publicKey,"
+ " localAuthorId, verified, active"
String sql = "SELECT authorId, formatVersion, name, alias,"
+ " publicKey, localAuthorId, verified, active"
+ " FROM contacts"
+ " WHERE contactId = ?";
ps = txn.prepareStatement(sql);
......@@ -1269,15 +1275,17 @@ abstract class JdbcDatabase implements Database<Connection> {
AuthorId authorId = new AuthorId(rs.getBytes(1));
int formatVersion = rs.getInt(2);
String name = rs.getString(3);
byte[] publicKey = rs.getBytes(4);
AuthorId localAuthorId = new AuthorId(rs.getBytes(5));
boolean verified = rs.getBoolean(6);
boolean active = rs.getBoolean(7);
String alias = rs.getString(4);
byte[] publicKey = rs.getBytes(5);
AuthorId localAuthorId = new AuthorId(rs.getBytes(6));
boolean verified = rs.getBoolean(7);
boolean active = rs.getBoolean(8);
rs.close();
ps.close();
Author author =
new Author(authorId, formatVersion, name, publicKey);
return new Contact(c, author, localAuthorId, verified, active);
return new Contact(c, author, localAuthorId, alias, verified,
active);
} catch (SQLException e) {
tryToClose(rs);
tryToClose(ps);
......@@ -1292,7 +1300,7 @@ abstract class JdbcDatabase implements Database<Connection> {
ResultSet rs = null;
try {
String sql = "SELECT contactId, authorId, formatVersion, name,"
+ " publicKey, localAuthorId, verified, active"
+ " alias, publicKey, localAuthorId, verified, active"
+ " FROM contacts";
ps = txn.prepareStatement(sql);
rs = ps.executeQuery();
......@@ -1302,14 +1310,15 @@ abstract class JdbcDatabase implements Database<Connection> {
AuthorId authorId = new AuthorId(rs.getBytes(2));
int formatVersion = rs.getInt(3);
String name = rs.getString(4);
byte[] publicKey = rs.getBytes(5);
String alias = rs.getString(5);
byte[] publicKey = rs.getBytes(6);
Author author =
new Author(authorId, formatVersion, name, publicKey);
AuthorId localAuthorId = new AuthorId(rs.getBytes(6));
boolean verified = rs.getBoolean(7);
boolean active = rs.getBoolean(8);
AuthorId localAuthorId = new AuthorId(rs.getBytes(7));
boolean verified = rs.getBoolean(8);
boolean active = rs.getBoolean(9);
contacts.add(new Contact(contactId, author, localAuthorId,
verified, active));
alias, verified, active));
}
rs.close();
ps.close();
......@@ -1350,8 +1359,8 @@ abstract class JdbcDatabase implements Database<Connection> {
PreparedStatement ps = null;
ResultSet rs = null;
try {
String sql = "SELECT contactId, formatVersion, name, publicKey,"
+ " localAuthorId, verified, active"
String sql = "SELECT contactId, formatVersion, name, alias,"
+ " publicKey, localAuthorId, verified, active"
+ " FROM contacts"
+ " WHERE authorId = ?";
ps = txn.prepareStatement(sql);
......@@ -1362,14 +1371,15 @@ abstract class JdbcDatabase implements Database<Connection> {
ContactId c = new ContactId(rs.getInt(1));
int formatVersion = rs.getInt(2);
String name = rs.getString(3);
byte[] publicKey = rs.getBytes(4);
AuthorId localAuthorId = new AuthorId(rs.getBytes(5));
boolean verified = rs.getBoolean(6);
boolean active = rs.getBoolean(7);
String alias = rs.getString(4);
byte[] publicKey = rs.getBytes(5);
AuthorId localAuthorId = new AuthorId(rs.getBytes(6));
boolean verified = rs.getBoolean(7);
boolean active = rs.getBoolean(8);
Author author =
new Author(remote, formatVersion, name, publicKey);
contacts.add(new Contact(c, author, localAuthorId, verified,
active));
contacts.add(new Contact(c, author, localAuthorId, alias,
verified, active));
}
rs.close();
ps.close();
......@@ -2794,6 +2804,25 @@ abstract class JdbcDatabase implements Database<Connection> {
}
}
@Override
public void setContactAlias(Connection txn, ContactId c,
@Nullable String alias) throws DbException {
PreparedStatement ps = null;
try {
String sql = "UPDATE contacts SET alias = ? WHERE contactId = ?";
ps = txn.prepareStatement(sql);
if (alias == null) ps.setNull(1, VARCHAR);
else ps.setString(1, alias);
ps.setInt(2, c.getInt());
int affected = ps.executeUpdate();
if (affected < 0 || affected > 1) throw new DbStateException();
ps.close();
} catch (SQLException e) {
tryToClose(ps);
throw new DbException(e);
}
}
@Override
public void setGroupVisibility(Connection txn, ContactId c, GroupId g,
boolean shared) throws DbException {
......
package org.briarproject.bramble.db;
import org.briarproject.bramble.api.db.DbException;
import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.logging.Logger;
import javax.annotation.Nullable;
import static java.util.logging.Level.WARNING;
import static java.util.logging.Logger.getLogger;
import static org.briarproject.bramble.util.LogUtils.logException;
class Migration40_41 implements Migration<Connection> {
private static final Logger LOG = getLogger(Migration40_41.class.getName());
@Override
public int getStartVersion() {
return 40;
}
@Override
public int getEndVersion() {
return 41;
}
@Override
public void migrate(Connection txn) throws DbException {
Statement s = null;
try {
s = txn.createStatement();
s.execute("ALTER TABLE contacts"
// TODO how to insertTypeNames _STRING ?
+ " ADD alias VARCHAR");
} catch (SQLException e) {
tryToClose(s);
throw new DbException(e);
}
}
private void tryToClose(@Nullable Statement s) {
try {
if (s != null) s.close();
} catch (SQLException e) {
logException(LOG, WARNING, e);
}
}
}
......@@ -11,6 +11,7 @@ import org.briarproject.bramble.api.identity.Author;
import org.briarproject.bramble.api.identity.AuthorId;
import org.briarproject.bramble.api.transport.KeyManager;
import org.briarproject.bramble.test.BrambleMockTestCase;
import org.briarproject.bramble.test.DbExpectations;
import org.jmock.Expectations;
import org.jmock.Mockery;
import org.junit.Test;
......@@ -20,9 +21,11 @@ import java.util.Collection;
import java.util.Collections;
import java.util.Random;
import static org.briarproject.bramble.api.identity.AuthorConstants.MAX_AUTHOR_NAME_LENGTH;
import static org.briarproject.bramble.test.TestUtils.getAuthor;
import static org.briarproject.bramble.test.TestUtils.getRandomId;
import static org.briarproject.bramble.test.TestUtils.getSecretKey;
import static org.briarproject.bramble.util.StringUtils.getRandomString;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
......@@ -35,9 +38,10 @@ public class ContactManagerImplTest extends BrambleMockTestCase {
private final ContactId contactId = new ContactId(42);
private final Author remote = getAuthor();
private final AuthorId local = new AuthorId(getRandomId());
private final String alias = getRandomString(MAX_AUTHOR_NAME_LENGTH);
private final boolean verified = false, active = true;
private final Contact contact =
new Contact(contactId, remote, local, verified, active);
new Contact(contactId, remote, local, alias, verified, active);
public ContactManagerImplTest() {
contactManager = new ContactManagerImpl(db, keyManager);
......@@ -131,7 +135,8 @@ public class ContactManagerImplTest extends BrambleMockTestCase {
public void testActiveContacts() throws Exception {
Collection<Contact> activeContacts = Collections.singletonList(contact);
Collection<Contact> contacts = new ArrayList<>(activeContacts);
contacts.add(new Contact(new ContactId(3), remote, local, true, false));
contacts.add(new Contact(new ContactId(3), remote, local, alias, true,
false));
Transaction txn = new Transaction(null, true);
context.checking(new Expectations() {{
oneOf(db).startTransaction(true);
......@@ -171,6 +176,23 @@ public class ContactManagerImplTest extends BrambleMockTestCase {
contactManager.setContactActive(txn, contactId, active);
}
@Test
public void testSetContactAlias() throws Exception {
Transaction txn = new Transaction(null, false);
context.checking(new DbExpectations() {{
oneOf(db).transaction(with(equal(false)), withDbRunnable(txn));
oneOf(db).setContactAlias(txn, contactId, alias);
}});
contactManager.setContactAlias(contactId, alias);
}
@Test(expected = IllegalArgumentException.class)
public void testSetContactAliasTooLong() throws Exception {
contactManager.setContactAlias(contactId,
getRandomString(MAX_AUTHOR_NAME_LENGTH + 1));
}
@Test
public void testContactExists() throws Exception {
Transaction txn = new Transaction(null, true);
......
......@@ -77,6 +77,7 @@ import static org.briarproject.bramble.test.TestUtils.getMessage;
import static org.briarproject.bramble.test.TestUtils.getRandomId;
import static org.briarproject.bramble.test.TestUtils.getSecretKey;
import static org.briarproject.bramble.test.TestUtils.getTransportId;
import static org.briarproject.bramble.util.StringUtils.getRandomString;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
......@@ -99,6 +100,7 @@ public class DatabaseComponentImplTest extends BrambleMockTestCase {
private final Group group;
private final Author author;
private final LocalAuthor localAuthor;
private final String alias;
private final Message message, message1;
private final MessageId messageId, messageId1;
private final Metadata metadata;
......@@ -115,6 +117,7 @@ public class DatabaseComponentImplTest extends BrambleMockTestCase {
groupId = group.getId();
author = getAuthor();
localAuthor = getLocalAuthor();
alias = getRandomString(5);
message = getMessage(groupId);
message1 = getMessage(groupId);
messageId = message.getId();
......@@ -124,7 +127,7 @@ public class DatabaseComponentImplTest extends BrambleMockTestCase {
transportId = getTransportId();
maxLatency = Integer.MAX_VALUE;
contactId = new ContactId(234);
contact = new Contact(contactId, author, localAuthor.getId(),
contact = new Contact(contactId, author, localAuthor.getId(), alias,
true, true);
keySetId = new KeySetId(345);
}
......@@ -288,11 +291,11 @@ public class DatabaseComponentImplTest extends BrambleMockTestCase {
throws Exception {
context.checking(new Expectations() {{
// Check whether the contact is in the DB (which it's not)
exactly(16).of(database).startTransaction();
exactly(17).of(database).startTransaction();
will(returnValue(txn));
exactly(16).of(database).containsContact(txn, contactId);
exactly(17).of(database).containsContact(txn, contactId);
will(returnValue(false));
exactly(16).of(database).abortTransaction(txn);
exactly(17).of(database).abortTransaction(txn);
}});
DatabaseComponent db = createDatabaseComponent(database, eventBus,
shutdown);
......@@ -450,6 +453,16 @@ public class DatabaseComponentImplTest extends BrambleMockTestCase {
db.endTransaction(transaction);
}
transaction = db.startTransaction(false);
try {
db.setContactAlias(transaction, contactId, alias);
fail();
} catch (NoSuchContactException expected) {
// Expected
} finally {
db.endTransaction(transaction);
}
transaction = db.startTransaction(false);
try {
db.setGroupVisibility(transaction, contactId, groupId, SHARED);
......
......@@ -53,6 +53,7 @@ import static java.util.Collections.singletonList;
import static java.util.Collections.singletonMap;
import static java.util.concurrent.TimeUnit.SECONDS;
import static org.briarproject.bramble.api.db.Metadata.REMOVE;
import static org.briarproject.bramble.api.identity.AuthorConstants.MAX_AUTHOR_NAME_LENGTH;
import static org.briarproject.bramble.api.sync.Group.Visibility.INVISIBLE;
import static org.briarproject.bramble.api.sync.Group.Visibility.SHARED;
import static org.briarproject.bramble.api.sync.Group.Visibility.VISIBLE;
......@@ -74,6 +75,7 @@ import static org.briarproject.bramble.test.TestUtils.getRandomId;
import static org.briarproject.bramble.test.TestUtils.getSecretKey;
import static org.briarproject.bramble.test.TestUtils.getTestDirectory;
import static org.briarproject.bramble.test.TestUtils.getTransportId;
import static org.briarproject.bramble.util.StringUtils.getRandomString;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
......@@ -1713,6 +1715,39 @@ public abstract class JdbcDatabaseTest extends BrambleTestCase {
db.close();
}
@Test
public void testSetContactAlias() throws Exception {
Database<Connection> db = open(false);
Connection txn = db.startTransaction();
// Add a contact
db.addLocalAuthor(txn, localAuthor);
assertEquals(contactId, db.addContact(txn, author, localAuthor.getId(),
true, true));
// The contact should have no alias
Contact contact = db.getContact(txn, contactId);
assertNull(contact.getAlias());
// Set a contact alias
String alias = getRandomString(MAX_AUTHOR_NAME_LENGTH);
db.setContactAlias(txn, contactId, alias);
// The contact should have an alias
contact = db.getContact(txn, contactId);
assertEquals(alias, contact.getAlias());
// Set the contact alias null
db.setContactAlias(txn, contactId, null);
// The contact should have no alias
contact = db.getContact(txn, contactId);
assertNull(contact.getAlias());
db.commitTransaction(txn);
db.close();
}
@Test
public void testSetMessageState() throws Exception {
Database<Connection> db = open(false);
......
......@@ -29,6 +29,7 @@ import static org.briarproject.bramble.api.identity.Author.Status.UNVERIFIED;
import static org.briarproject.bramble.api.identity.Author.Status.VERIFIED;
import static org.briarproject.bramble.test.TestUtils.getAuthor;
import static org.briarproject.bramble.test.TestUtils.getLocalAuthor;
import static org.briarproject.bramble.util.StringUtils.getRandomString;
import static org.junit.Assert.assertEquals;
public class IdentityManagerImplTest extends BrambleMockTestCase {
......@@ -126,7 +127,7 @@ public class IdentityManagerImplTest extends BrambleMockTestCase {
// add one unverified contact
Contact contact = new Contact(new ContactId(1), author,
localAuthor.getId(), false, true);
localAuthor.getId(), getRandomString(5), false, true);
contacts.add(contact);
checkAuthorStatusContext(authorId, contacts);
......@@ -134,7 +135,7 @@ public class IdentityManagerImplTest extends BrambleMockTestCase {
// add one verified contact
Contact contact2 = new Contact(new ContactId(1), author,
localAuthor.getId(), true, true);
localAuthor.getId(), getRandomString(5), true, true);
contacts.add(contact2);
checkAuthorStatusContext(authorId, contacts);
......
......@@ -39,6 +39,7 @@ import static org.briarproject.bramble.test.TestUtils.getGroup;
import static org.briarproject.bramble.test.TestUtils.getLocalAuthor;
import static org.briarproject.bramble.test.TestUtils.getMessage;
import static org.briarproject.bramble.test.TestUtils.getRandomId;
import static org.briarproject.bramble.util.StringUtils.getRandomString;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
......@@ -612,7 +613,7 @@ public class TransportPropertyManagerImplTest extends BrambleMockTestCase {
private Contact getContact(boolean active) {
ContactId c = new ContactId(nextContactId++);
return new Contact(c, getAuthor(), localAuthor.getId(),
true, active);
getRandomString(5), true, active);
}
private void expectGetLocalProperties(Transaction txn) throws Exception {
......
package org.briarproject.bramble.test;
import org.briarproject.bramble.api.db.DbRunnable;
import org.briarproject.bramble.api.db.Transaction;
import org.jmock.Expectations;
public class DbExpectations extends Expectations {
protected <E extends Exception> DbRunnable<E> withDbRunnable(
Transaction txn) {
addParameterMatcher(any(DbRunnable.class));
currentBuilder().setAction(new RunTransactionAction(txn));
return null;
}
}
package org.briarproject.bramble.test;
import org.briarproject.bramble.api.db.DbRunnable;
import org.briarproject.bramble.api.db.Transaction;
import org.hamcrest.Description;
import org.jmock.api.Action;
import org.jmock.api.Invocation;
public class RunTransactionAction implements Action {
private final Transaction txn;
@SuppressWarnings("WeakerAccess")
public RunTransactionAction(Transaction txn) {
this.txn = txn;
}
@Override
public Object invoke(Invocation invocation) throws Throwable {
DbRunnable task = (DbRunnable) invocation.getParameter(1);
task.run(txn);
return null;
}
@Override
public void describeTo(Description description) {
description.appendText("runs a task inside a database transaction");
}
}
......@@ -33,6 +33,7 @@ import static org.briarproject.bramble.test.TestUtils.getRandomBytes;
import static org.briarproject.bramble.test.TestUtils.getRandomId;
import static org.briarproject.bramble.test.TestUtils.getSecretKey;
import static org.briarproject.bramble.test.TestUtils.getTransportId;
import static org.briarproject.bramble.util.StringUtils.getRandomString;
import static org.junit.Assert.assertEquals;
public class KeyManagerImplTest extends BrambleMockTestCase {
......@@ -66,10 +67,10 @@ public class KeyManagerImplTest extends BrambleMockTestCase {
Author remoteAuthor = getAuthor();
AuthorId localAuthorId = new AuthorId(getRandomId());
Collection<Contact> contacts = new ArrayList<>();
contacts.add(new Contact(contactId, remoteAuthor, localAuthorId, true,
true));
contacts.add(new Contact(contactId, remoteAuthor, localAuthorId,
getRandomString(5), true, true));
contacts.add(new Contact(inactiveContactId, remoteAuthor, localAuthorId,
true, false));
getRandomString(5), true, false));
SimplexPluginFactory pluginFactory =
context.mock(SimplexPluginFactory.class);
Collection<SimplexPluginFactory> factories =
......
......@@ -38,6 +38,7 @@ import static org.briarproject.bramble.test.TestUtils.getGroup;
import static org.briarproject.bramble.test.TestUtils.getLocalAuthor;
import static org.briarproject.bramble.test.TestUtils.getMessage;
import static org.briarproject.bramble.test.TestUtils.getRandomId;
import static org.briarproject.bramble.util.StringUtils.getRandomString;
import static org.briarproject.bramble.versioning.ClientVersioningConstants.GROUP_KEY_CONTACT_ID;
import static org.briarproject.bramble.versioning.ClientVersioningConstants.MSG_KEY_LOCAL;
import static org.briarproject.