317 lines
14 KiB
Java
317 lines
14 KiB
Java
package org.thoughtcrime.securesms.groups;
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import android.content.Context;
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import androidx.annotation.NonNull;
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import androidx.annotation.Nullable;
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import com.google.protobuf.ByteString;
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import org.thoughtcrime.securesms.ApplicationContext;
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import org.thoughtcrime.securesms.database.Address;
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import org.thoughtcrime.securesms.database.DatabaseFactory;
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import org.thoughtcrime.securesms.database.GroupDatabase;
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import org.thoughtcrime.securesms.database.MessagingDatabase.InsertResult;
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import org.thoughtcrime.securesms.database.MmsDatabase;
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import org.thoughtcrime.securesms.database.SmsDatabase;
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import org.thoughtcrime.securesms.jobs.AvatarDownloadJob;
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import org.thoughtcrime.securesms.jobs.PushGroupUpdateJob;
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import org.thoughtcrime.securesms.logging.Log;
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import org.thoughtcrime.securesms.loki.protocol.ClosedGroupsProtocol;
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import org.thoughtcrime.securesms.mms.MmsException;
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import org.thoughtcrime.securesms.mms.OutgoingGroupMediaMessage;
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import org.thoughtcrime.securesms.recipients.Recipient;
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import org.thoughtcrime.securesms.sms.IncomingGroupMessage;
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import org.thoughtcrime.securesms.sms.IncomingTextMessage;
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import org.thoughtcrime.securesms.util.Base64;
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import org.thoughtcrime.securesms.util.GroupUtil;
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import org.thoughtcrime.securesms.util.TextSecurePreferences;
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import org.session.libsignal.libsignal.util.guava.Optional;
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import org.session.libsignal.service.api.messages.SignalServiceAttachment;
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import org.session.libsignal.service.api.messages.SignalServiceContent;
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import org.session.libsignal.service.api.messages.SignalServiceDataMessage;
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import org.session.libsignal.service.api.messages.SignalServiceGroup;
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import org.session.libsignal.service.api.messages.SignalServiceGroup.Type;
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import org.session.libsignal.service.loki.protocol.shelved.multidevice.MultiDeviceProtocol;
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import java.util.Collections;
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import java.util.HashSet;
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import java.util.LinkedList;
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import java.util.List;
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import java.util.Set;
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import static org.thoughtcrime.securesms.database.GroupDatabase.GroupRecord;
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import static org.session.libsignal.service.internal.push.SignalServiceProtos.AttachmentPointer;
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import static org.session.libsignal.service.internal.push.SignalServiceProtos.GroupContext;
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public class GroupMessageProcessor {
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private static final String TAG = GroupMessageProcessor.class.getSimpleName();
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public static @Nullable Long process(@NonNull Context context,
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@NonNull SignalServiceContent content,
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@NonNull SignalServiceDataMessage message,
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boolean outgoing)
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{
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if (!message.getGroupInfo().isPresent() || message.getGroupInfo().get().getGroupId() == null) {
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Log.w(TAG, "Received group message with no id! Ignoring...");
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return null;
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}
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GroupDatabase database = DatabaseFactory.getGroupDatabase(context);
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SignalServiceGroup group = message.getGroupInfo().get();
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String id = GroupUtil.getEncodedId(group);
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Optional<GroupRecord> record = database.getGroup(id);
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if (record.isPresent() && group.getType() == Type.UPDATE) {
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return handleGroupUpdate(context, content, group, record.get(), outgoing);
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} else if (!record.isPresent() && group.getType() == Type.UPDATE) {
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return handleGroupCreate(context, content, group, outgoing);
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} else if (record.isPresent() && group.getType() == Type.QUIT) {
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return handleGroupLeave(context, content, group, record.get(), outgoing);
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} else if (record.isPresent() && group.getType() == Type.REQUEST_INFO) {
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return handleGroupInfoRequest(context, content, group, record.get());
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} else {
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Log.w(TAG, "Received unknown type, ignoring...");
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return null;
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}
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}
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private static @Nullable Long handleGroupCreate(@NonNull Context context,
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@NonNull SignalServiceContent content,
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@NonNull SignalServiceGroup group,
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boolean outgoing)
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{
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GroupDatabase database = DatabaseFactory.getGroupDatabase(context);
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String id = GroupUtil.getEncodedId(group);
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GroupContext.Builder builder = createGroupContext(group);
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builder.setType(GroupContext.Type.UPDATE);
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SignalServiceAttachment avatar = group.getAvatar().orNull();
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List<Address> members = group.getMembers().isPresent() ? new LinkedList<>() : null;
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List<Address> admins = group.getAdmins().isPresent() ? new LinkedList<>() : null;
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if (group.getMembers().isPresent()) {
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for (String member : group.getMembers().get()) {
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members.add(Address.fromExternal(context, member));
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}
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}
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// Loki - Parse admins
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if (group.getAdmins().isPresent()) {
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for (String admin : group.getAdmins().get()) {
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admins.add(Address.fromExternal(context, admin));
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}
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}
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database.create(id, group.getName().orNull(), members,
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avatar != null && avatar.isPointer() ? avatar.asPointer() : null, null, admins);
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if (group.getMembers().isPresent()) {
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ClosedGroupsProtocol.establishSessionsWithMembersIfNeeded(context, group.getMembers().get());
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}
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return storeMessage(context, content, group, builder.build(), outgoing);
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}
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private static @Nullable Long handleGroupUpdate(@NonNull Context context,
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@NonNull SignalServiceContent content,
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@NonNull SignalServiceGroup group,
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@NonNull GroupRecord groupRecord,
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boolean outgoing)
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{
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GroupDatabase database = DatabaseFactory.getGroupDatabase(context);
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String id = GroupUtil.getEncodedId(group);
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String userMasterDevice = TextSecurePreferences.getMasterHexEncodedPublicKey(context);
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if (userMasterDevice == null) { userMasterDevice = TextSecurePreferences.getLocalNumber(context); }
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if (group.getGroupType() == SignalServiceGroup.GroupType.SIGNAL) {
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// Loki - Only update the group if the group admin sent the message
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String masterDevice = MultiDeviceProtocol.shared.getMasterDevice(content.getSender());
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if (masterDevice == null) { masterDevice = content.getSender(); }
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if (!groupRecord.getAdmins().contains(Address.fromSerialized(masterDevice))) {
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Log.d("Loki", "Received a group update message from a non-admin user for: " + id +"; ignoring.");
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return null;
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}
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// Loki - Only process update messages if we're part of the group
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Address userMasterDeviceAddress = Address.fromSerialized(userMasterDevice);
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if (!groupRecord.getMembers().contains(userMasterDeviceAddress) &&
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!group.getMembers().or(Collections.emptyList()).contains(userMasterDevice)) {
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Log.d("Loki", "Received a group update message from a group we're not a member of: " + id + "; ignoring.");
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database.setActive(id, false);
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return null;
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}
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}
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Set<Address> currentMembers = new HashSet<>(groupRecord.getMembers());
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Set<Address> newMembers = new HashSet<>();
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for (String messageMember : group.getMembers().get()) {
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newMembers.add(Address.fromExternal(context, messageMember));
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}
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// Added members are the members who are present in newMembers but not in currentMembers
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Set<Address> addedMembers = new HashSet<>(newMembers);
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addedMembers.removeAll(currentMembers);
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// Kicked members are members who are present in currentMembers but not in newMembers
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Set<Address> removedMembers = new HashSet<>(currentMembers);
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removedMembers.removeAll(newMembers);
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GroupContext.Builder builder = createGroupContext(group);
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builder.setType(GroupContext.Type.UPDATE);
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// Update our group members if they're different
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if (!currentMembers.equals(newMembers)) {
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database.updateMembers(id, new LinkedList<>(newMembers));
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}
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// Add any new or removed members to the group context.
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// This will allow us later to iterate over them to check if they left or were added for UI purposes.
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for (Address addedMember : addedMembers) {
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builder.addNewMembers(addedMember.serialize());
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}
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for (Address removedMember : removedMembers) {
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builder.addRemovedMembers(removedMember.serialize());
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}
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if (group.getName().isPresent() || group.getAvatar().isPresent()) {
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SignalServiceAttachment avatar = group.getAvatar().orNull();
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database.update(id, group.getName().orNull(), avatar != null ? avatar.asPointer() : null);
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}
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if (group.getName().isPresent() && group.getName().get().equals(groupRecord.getTitle())) {
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builder.clearName();
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}
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// If we were removed then we need to disable the chat
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if (removedMembers.contains(Address.fromSerialized(userMasterDevice))) {
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database.setActive(id, false);
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} else {
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if (!groupRecord.isActive()) database.setActive(id, true);
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if (group.getMembers().isPresent()) {
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ClosedGroupsProtocol.establishSessionsWithMembersIfNeeded(context, group.getMembers().get());
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}
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}
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return storeMessage(context, content, group, builder.build(), outgoing);
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}
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private static Long handleGroupInfoRequest(@NonNull Context context,
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@NonNull SignalServiceContent content,
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@NonNull SignalServiceGroup group,
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@NonNull GroupRecord record)
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{
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String masterDevice = MultiDeviceProtocol.shared.getMasterDevice(content.getSender());
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if (masterDevice == null) { masterDevice = content.getSender(); }
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if (record.getMembers().contains(Address.fromSerialized(masterDevice))) {
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ApplicationContext.getInstance(context)
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.getJobManager()
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.add(new PushGroupUpdateJob(content.getSender(), group.getGroupId()));
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}
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return null;
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}
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private static Long handleGroupLeave(@NonNull Context context,
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@NonNull SignalServiceContent content,
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@NonNull SignalServiceGroup group,
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@NonNull GroupRecord record,
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boolean outgoing)
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{
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GroupDatabase database = DatabaseFactory.getGroupDatabase(context);
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String id = GroupUtil.getEncodedId(group);
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List<Address> members = record.getMembers();
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GroupContext.Builder builder = createGroupContext(group);
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builder.setType(GroupContext.Type.QUIT);
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String masterDevice = MultiDeviceProtocol.shared.getMasterDevice(content.getSender());
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if (masterDevice == null) { masterDevice = content.getSender(); }
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if (members.contains(Address.fromExternal(context, masterDevice))) {
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database.removeMember(id, Address.fromExternal(context, masterDevice));
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if (outgoing) database.setActive(id, false);
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return storeMessage(context, content, group, builder.build(), outgoing);
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}
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return null;
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}
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private static @Nullable Long storeMessage(@NonNull Context context,
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@NonNull SignalServiceContent content,
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@NonNull SignalServiceGroup group,
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@NonNull GroupContext storage,
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boolean outgoing)
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{
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if (group.getAvatar().isPresent()) {
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ApplicationContext.getInstance(context).getJobManager()
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.add(new AvatarDownloadJob(GroupUtil.getEncodedId(group)));
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}
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try {
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if (outgoing) {
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MmsDatabase mmsDatabase = DatabaseFactory.getMmsDatabase(context);
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Address address = Address.fromExternal(context, GroupUtil.getEncodedId(group));
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Recipient recipient = Recipient.from(context, address, false);
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OutgoingGroupMediaMessage outgoingMessage = new OutgoingGroupMediaMessage(recipient, storage, null, content.getTimestamp(), 0, null, Collections.emptyList(), Collections.emptyList());
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long threadId = DatabaseFactory.getThreadDatabase(context).getOrCreateThreadIdFor(recipient);
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long messageId = mmsDatabase.insertMessageOutbox(outgoingMessage, threadId, false, null);
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mmsDatabase.markAsSent(messageId, true);
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return threadId;
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} else {
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SmsDatabase smsDatabase = DatabaseFactory.getSmsDatabase(context);
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String body = Base64.encodeBytes(storage.toByteArray());
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IncomingTextMessage incoming = new IncomingTextMessage(Address.fromExternal(context, content.getSender()), content.getSenderDevice(), content.getTimestamp(), body, Optional.of(group), 0, content.isNeedsReceipt());
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IncomingGroupMessage groupMessage = new IncomingGroupMessage(incoming, storage, body);
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Optional<InsertResult> insertResult = smsDatabase.insertMessageInbox(groupMessage);
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if (insertResult.isPresent()) {
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ApplicationContext.getInstance(context).messageNotifier.updateNotification(context, insertResult.get().getThreadId());
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return insertResult.get().getThreadId();
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} else {
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return null;
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}
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}
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} catch (MmsException e) {
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Log.w(TAG, e);
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}
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return null;
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}
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private static GroupContext.Builder createGroupContext(SignalServiceGroup group) {
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GroupContext.Builder builder = GroupContext.newBuilder();
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builder.setId(ByteString.copyFrom(group.getGroupId()));
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if (group.getAvatar().isPresent() && group.getAvatar().get().isPointer()) {
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builder.setAvatar(AttachmentPointer.newBuilder()
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.setId(group.getAvatar().get().asPointer().getId())
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.setKey(ByteString.copyFrom(group.getAvatar().get().asPointer().getKey()))
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.setContentType(group.getAvatar().get().getContentType()));
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}
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if (group.getName().isPresent()) {
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builder.setName(group.getName().get());
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}
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if (group.getMembers().isPresent()) {
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builder.addAllMembers(group.getMembers().get());
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}
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if (group.getAdmins().isPresent()) {
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builder.addAllAdmins(group.getAdmins().get());
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}
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return builder;
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}
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}
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