Signal-Android/app/src/main/java/org/thoughtcrime/securesms/groups/GroupManager.java

291 lines
12 KiB
Java

package org.thoughtcrime.securesms.groups;
import android.content.Context;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.annotation.WorkerThread;
import org.signal.zkgroup.groups.GroupMasterKey;
import org.signal.zkgroup.groups.UuidCiphertext;
import org.thoughtcrime.securesms.database.DatabaseFactory;
import org.thoughtcrime.securesms.database.GroupDatabase;
import org.thoughtcrime.securesms.logging.Log;
import org.thoughtcrime.securesms.profiles.AvatarHelper;
import org.thoughtcrime.securesms.recipients.Recipient;
import org.thoughtcrime.securesms.recipients.RecipientId;
import org.thoughtcrime.securesms.util.FeatureFlags;
import org.thoughtcrime.securesms.util.Util;
import java.io.IOException;
import java.util.Collection;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
public final class GroupManager {
private static final String TAG = Log.tag(GroupManager.class);
@WorkerThread
public static @NonNull GroupActionResult createGroup(@NonNull Context context,
@NonNull Set<Recipient> members,
@Nullable byte[] avatar,
@Nullable String name,
boolean mms)
throws GroupChangeBusyException, GroupChangeFailedException, IOException
{
boolean shouldAttemptToCreateV2 = !mms && FeatureFlags.groupsV2create();
Set<RecipientId> memberIds = getMemberIds(members);
if (shouldAttemptToCreateV2) {
try {
try (GroupManagerV2.GroupCreator groupCreator = new GroupManagerV2(context).create()) {
return groupCreator.createGroup(memberIds, name, avatar);
}
} catch (MembershipNotSuitableForV2Exception e) {
Log.w(TAG, "Attempted to make a GV2, but membership was not suitable, falling back to GV1", e);
return GroupManagerV1.createGroup(context, memberIds, avatar, name, false);
}
} else {
return GroupManagerV1.createGroup(context, memberIds, avatar, name, mms);
}
}
@WorkerThread
public static GroupActionResult updateGroupDetails(@NonNull Context context,
@NonNull GroupId groupId,
@Nullable byte[] avatar,
boolean avatarChanged,
@NonNull String name,
boolean nameChanged)
throws GroupChangeFailedException, GroupInsufficientRightsException, IOException, GroupNotAMemberException, GroupChangeBusyException
{
if (groupId.isV2()) {
try (GroupManagerV2.GroupEditor edit = new GroupManagerV2(context).edit(groupId.requireV2())) {
return edit.updateGroupTitleAndAvatar(nameChanged ? name : null, avatar, avatarChanged);
}
} else {
List<Recipient> members = DatabaseFactory.getGroupDatabase(context)
.getGroupMembers(groupId, GroupDatabase.MemberSet.FULL_MEMBERS_EXCLUDING_SELF);
Set<RecipientId> recipientIds = getMemberIds(new HashSet<>(members));
return GroupManagerV1.updateGroup(context, groupId.requireV1(), recipientIds, avatar, name, 0);
}
}
private static Set<RecipientId> getMemberIds(Collection<Recipient> recipients) {
Set<RecipientId> results = new HashSet<>(recipients.size());
for (Recipient recipient : recipients) {
results.add(recipient.getId());
}
return results;
}
@WorkerThread
public static void leaveGroup(@NonNull Context context, @NonNull GroupId.Push groupId)
throws GroupChangeBusyException, GroupChangeFailedException, IOException
{
if (groupId.isV2()) {
try (GroupManagerV2.GroupEditor edit = new GroupManagerV2(context).edit(groupId.requireV2())) {
edit.leaveGroup();
Log.i(TAG, "Left group " + groupId);
} catch (GroupInsufficientRightsException e) {
Log.w(TAG, "Unexpected prevention from leaving " + groupId + " due to rights", e);
throw new GroupChangeFailedException(e);
} catch (GroupNotAMemberException e) {
Log.w(TAG, "Already left group " + groupId, e);
}
} else {
if (!GroupManagerV1.leaveGroup(context, groupId.requireV1())) {
Log.w(TAG, "GV1 group leave failed" + groupId);
throw new GroupChangeFailedException();
}
}
}
@WorkerThread
public static void leaveGroupFromBlockOrMessageRequest(@NonNull Context context, @NonNull GroupId.Push groupId)
throws IOException, GroupChangeBusyException, GroupChangeFailedException
{
if (groupId.isV2()) {
leaveGroup(context, groupId.requireV2());
} else {
if (!GroupManagerV1.silentLeaveGroup(context, groupId.requireV1())) {
throw new GroupChangeFailedException();
}
}
}
@WorkerThread
public static void addMemberAdminsAndLeaveGroup(@NonNull Context context, @NonNull GroupId.V2 groupId, @NonNull Collection<RecipientId> newAdmins)
throws GroupChangeBusyException, GroupChangeFailedException, IOException, GroupInsufficientRightsException, GroupNotAMemberException
{
try (GroupManagerV2.GroupEditor edit = new GroupManagerV2(context).edit(groupId.requireV2())) {
edit.addMemberAdminsAndLeaveGroup(newAdmins);
Log.i(TAG, "Left group " + groupId);
}
}
@WorkerThread
public static void ejectFromGroup(@NonNull Context context, @NonNull GroupId.V2 groupId, @NonNull Recipient recipient)
throws GroupChangeBusyException, GroupChangeFailedException, GroupInsufficientRightsException, GroupNotAMemberException, IOException
{
try (GroupManagerV2.GroupEditor edit = new GroupManagerV2(context).edit(groupId.requireV2())) {
edit.ejectMember(recipient.getId());
Log.i(TAG, "Member removed from group " + groupId);
}
}
@WorkerThread
public static void updateGroupFromServer(@NonNull Context context,
@NonNull GroupMasterKey groupMasterKey,
int revision,
long timestamp,
@Nullable byte[] signedGroupChange)
throws GroupChangeBusyException, IOException, GroupNotAMemberException
{
try (GroupManagerV2.GroupUpdater updater = new GroupManagerV2(context).updater(groupMasterKey)) {
updater.updateLocalToServerRevision(revision, timestamp, signedGroupChange);
}
}
@WorkerThread
public static void setMemberAdmin(@NonNull Context context,
@NonNull GroupId.V2 groupId,
@NonNull RecipientId recipientId,
boolean admin)
throws GroupChangeBusyException, GroupChangeFailedException, GroupInsufficientRightsException, GroupNotAMemberException, IOException
{
try (GroupManagerV2.GroupEditor editor = new GroupManagerV2(context).edit(groupId.requireV2())) {
editor.setMemberAdmin(recipientId, admin);
}
}
@WorkerThread
public static void updateSelfProfileKeyInGroup(@NonNull Context context, @NonNull GroupId.V2 groupId)
throws IOException, GroupChangeBusyException, GroupInsufficientRightsException, GroupNotAMemberException, GroupChangeFailedException
{
try (GroupManagerV2.GroupEditor editor = new GroupManagerV2(context).edit(groupId.requireV2())) {
editor.updateSelfProfileKeyInGroup();
}
}
@WorkerThread
public static void acceptInvite(@NonNull Context context, @NonNull GroupId.V2 groupId)
throws GroupChangeBusyException, GroupChangeFailedException, GroupNotAMemberException, GroupInsufficientRightsException, IOException
{
try (GroupManagerV2.GroupEditor editor = new GroupManagerV2(context).edit(groupId.requireV2())) {
editor.acceptInvite();
DatabaseFactory.getGroupDatabase(context)
.setActive(groupId, true);
}
}
@WorkerThread
public static void updateGroupTimer(@NonNull Context context, @NonNull GroupId.Push groupId, int expirationTime)
throws GroupChangeFailedException, GroupInsufficientRightsException, IOException, GroupNotAMemberException, GroupChangeBusyException
{
if (groupId.isV2()) {
try (GroupManagerV2.GroupEditor editor = new GroupManagerV2(context).edit(groupId.requireV2())) {
editor.updateGroupTimer(expirationTime);
}
} else {
GroupManagerV1.updateGroupTimer(context, groupId.requireV1(), expirationTime);
}
}
@WorkerThread
public static void revokeInvites(@NonNull Context context,
@NonNull GroupId.V2 groupId,
@NonNull Collection<UuidCiphertext> uuidCipherTexts)
throws GroupChangeFailedException, GroupInsufficientRightsException, IOException, GroupNotAMemberException, GroupChangeBusyException
{
try (GroupManagerV2.GroupEditor editor = new GroupManagerV2(context).edit(groupId.requireV2())) {
editor.revokeInvites(uuidCipherTexts);
}
}
@WorkerThread
public static void applyMembershipAdditionRightsChange(@NonNull Context context,
@NonNull GroupId.V2 groupId,
@NonNull GroupAccessControl newRights)
throws GroupChangeFailedException, GroupInsufficientRightsException, IOException, GroupNotAMemberException, GroupChangeBusyException
{
try (GroupManagerV2.GroupEditor editor = new GroupManagerV2(context).edit(groupId.requireV2())) {
editor.updateMembershipRights(newRights);
}
}
@WorkerThread
public static void applyAttributesRightsChange(@NonNull Context context,
@NonNull GroupId.V2 groupId,
@NonNull GroupAccessControl newRights)
throws GroupChangeFailedException, GroupInsufficientRightsException, IOException, GroupNotAMemberException, GroupChangeBusyException
{
try (GroupManagerV2.GroupEditor editor = new GroupManagerV2(context).edit(groupId.requireV2())) {
editor.updateAttributesRights(newRights);
}
}
@WorkerThread
public static @NonNull GroupActionResult addMembers(@NonNull Context context,
@NonNull GroupId.Push groupId,
@NonNull Collection<RecipientId> newMembers)
throws GroupChangeFailedException, GroupInsufficientRightsException, IOException, GroupNotAMemberException, GroupChangeBusyException, MembershipNotSuitableForV2Exception
{
if (groupId.isV2()) {
try (GroupManagerV2.GroupEditor editor = new GroupManagerV2(context).edit(groupId.requireV2())) {
return editor.addMembers(newMembers);
}
} else {
GroupDatabase.GroupRecord groupRecord = DatabaseFactory.getGroupDatabase(context).requireGroup(groupId);
List<RecipientId> members = groupRecord.getMembers();
byte[] avatar = groupRecord.hasAvatar() ? Util.readFully(AvatarHelper.getAvatar(context, groupRecord.getRecipientId())) : null;
Set<RecipientId> recipientIds = new HashSet<>(members);
int originalSize = recipientIds.size();
recipientIds.addAll(newMembers);
return GroupManagerV1.updateGroup(context, groupId, recipientIds, avatar, groupRecord.getTitle(), recipientIds.size() - originalSize);
}
}
public static class GroupActionResult {
private final Recipient groupRecipient;
private final long threadId;
private final int addedMemberCount;
private final List<RecipientId> invitedMembers;
public GroupActionResult(@NonNull Recipient groupRecipient,
long threadId,
int addedMemberCount,
@NonNull List<RecipientId> invitedMembers)
{
this.groupRecipient = groupRecipient;
this.threadId = threadId;
this.addedMemberCount = addedMemberCount;
this.invitedMembers = invitedMembers;
}
public @NonNull Recipient getGroupRecipient() {
return groupRecipient;
}
public long getThreadId() {
return threadId;
}
public int getAddedMemberCount() {
return addedMemberCount;
}
public @NonNull List<RecipientId> getInvitedMembers() {
return invitedMembers;
}
}
}